Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

7 files changed, 9556 insertions, 0 deletions

diff --git a/drivers/net/bonding/Makefile b/drivers/net/bonding/Makefile
new file mode 100644
index 0000000..cf50384
--- /dev/null
+++ b/drivers/net/bonding/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for the Ethernet Bonding driver
+#
+
+obj-$(CONFIG_BONDING) += bonding.o
+
+bonding-objs := bond_main.o bond_3ad.o bond_alb.o
+
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
new file mode 100644
index 0000000..6233c4f
--- /dev/null
+++ b/drivers/net/bonding/bond_3ad.c
@@ -0,0 +1,2451 @@
+/*
+ * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ *
+ * Changes:
+ *
+ * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Amir Noam <amir.noam at intel dot com>
+ *	- Added support for lacp_rate module param.
+ *
+ * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Based on discussion on mailing list, changed locking scheme
+ *	  to use lock/unlock or lock_bh/unlock_bh appropriately instead
+ *	  of lock_irqsave/unlock_irqrestore. The new scheme helps exposing
+ *	  hidden bugs and solves system hangs that occurred due to the fact
+ *	  that holding lock_irqsave doesn't prevent softirqs from running.
+ *	  This also increases total throughput since interrupts are not
+ *	  blocked on each transmitted packets or monitor timeout.
+ *
+ * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Renamed bond_3ad_link_status_changed() to
+ *	  bond_3ad_handle_link_change() for compatibility with TLB.
+ *
+ * 2003/05/20 - Amir Noam <amir.noam at intel dot com>
+ *	- Fix long fail over time when releasing last slave of an active
+ *	  aggregator - send LACPDU on unbind of slave to tell partner this
+ *	  port is no longer aggregatable.
+ *
+ * 2003/06/25 - Tsippy Mendelson <tsippy.mendelson at intel dot com>
+ *	- Send LACPDU as highest priority packet to further fix the above
+ *	  problem on very high Tx traffic load where packets may get dropped
+ *	  by the slave.
+ *
+ * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Code cleanup and style changes
+ */
+
+//#define BONDING_DEBUG 1
+
+#include <linux/skbuff.h>
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/if_bonding.h>
+#include <linux/pkt_sched.h>
+#include "bonding.h"
+#include "bond_3ad.h"
+
+// General definitions
+#define AD_SHORT_TIMEOUT           1
+#define AD_LONG_TIMEOUT            0
+#define AD_STANDBY                 0x2
+#define AD_MAX_TX_IN_SECOND        3
+#define AD_COLLECTOR_MAX_DELAY     0
+
+// Timer definitions(43.4.4 in the 802.3ad standard)
+#define AD_FAST_PERIODIC_TIME      1
+#define AD_SLOW_PERIODIC_TIME      30
+#define AD_SHORT_TIMEOUT_TIME      (3*AD_FAST_PERIODIC_TIME)
+#define AD_LONG_TIMEOUT_TIME       (3*AD_SLOW_PERIODIC_TIME)
+#define AD_CHURN_DETECTION_TIME    60
+#define AD_AGGREGATE_WAIT_TIME     2
+
+// Port state definitions(43.4.2.2 in the 802.3ad standard)
+#define AD_STATE_LACP_ACTIVITY   0x1
+#define AD_STATE_LACP_TIMEOUT    0x2
+#define AD_STATE_AGGREGATION     0x4
+#define AD_STATE_SYNCHRONIZATION 0x8
+#define AD_STATE_COLLECTING      0x10
+#define AD_STATE_DISTRIBUTING    0x20
+#define AD_STATE_DEFAULTED       0x40
+#define AD_STATE_EXPIRED         0x80
+
+// Port Variables definitions used by the State Machines(43.4.7 in the 802.3ad standard)
+#define AD_PORT_BEGIN           0x1
+#define AD_PORT_LACP_ENABLED    0x2
+#define AD_PORT_ACTOR_CHURN     0x4
+#define AD_PORT_PARTNER_CHURN   0x8
+#define AD_PORT_READY           0x10
+#define AD_PORT_READY_N         0x20
+#define AD_PORT_MATCHED         0x40
+#define AD_PORT_STANDBY         0x80
+#define AD_PORT_SELECTED        0x100
+#define AD_PORT_MOVED           0x200
+
+// Port Key definitions
+// key is determined according to the link speed, duplex and
+// user key(which is yet not supported)
+//              ------------------------------------------------------------
+// Port key :   | User key                       |      Speed       |Duplex|
+//              ------------------------------------------------------------
+//              16                               6               1 0
+#define  AD_DUPLEX_KEY_BITS    0x1
+#define  AD_SPEED_KEY_BITS     0x3E
+#define  AD_USER_KEY_BITS      0xFFC0
+
+//dalloun
+#define     AD_LINK_SPEED_BITMASK_1MBPS       0x1
+#define     AD_LINK_SPEED_BITMASK_10MBPS      0x2
+#define     AD_LINK_SPEED_BITMASK_100MBPS     0x4
+#define     AD_LINK_SPEED_BITMASK_1000MBPS    0x8
+//endalloun
+
+// compare MAC addresses
+#define MAC_ADDRESS_COMPARE(A, B) memcmp(A, B, ETH_ALEN)
+
+static struct mac_addr null_mac_addr = {{0, 0, 0, 0, 0, 0}};
+static u16 ad_ticks_per_sec;
+static const int ad_delta_in_ticks = (AD_TIMER_INTERVAL * HZ) / 1000;
+
+// ================= 3AD api to bonding and kernel code ==================
+static u16 __get_link_speed(struct port *port);
+static u8 __get_duplex(struct port *port);
+static inline void __initialize_port_locks(struct port *port);
+//conversions
+static void __ntohs_lacpdu(struct lacpdu *lacpdu);
+static u16 __ad_timer_to_ticks(u16 timer_type, u16 Par);
+
+
+// ================= ad code helper functions ==================
+//needed by ad_rx_machine(...)
+static void __record_pdu(struct lacpdu *lacpdu, struct port *port);
+static void __record_default(struct port *port);
+static void __update_selected(struct lacpdu *lacpdu, struct port *port);
+static void __update_default_selected(struct port *port);
+static void __choose_matched(struct lacpdu *lacpdu, struct port *port);
+static void __update_ntt(struct lacpdu *lacpdu, struct port *port);
+
+//needed for ad_mux_machine(..)
+static void __attach_bond_to_agg(struct port *port);
+static void __detach_bond_from_agg(struct port *port);
+static int __agg_ports_are_ready(struct aggregator *aggregator);
+static void __set_agg_ports_ready(struct aggregator *aggregator, int val);
+
+//needed for ad_agg_selection_logic(...)
+static u32 __get_agg_bandwidth(struct aggregator *aggregator);
+static struct aggregator *__get_active_agg(struct aggregator *aggregator);
+
+
+// ================= main 802.3ad protocol functions ==================
+static int ad_lacpdu_send(struct port *port);
+static int ad_marker_send(struct port *port, struct marker *marker);
+static void ad_mux_machine(struct port *port);
+static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port);
+static void ad_tx_machine(struct port *port);
+static void ad_periodic_machine(struct port *port);
+static void ad_port_selection_logic(struct port *port);
+static void ad_agg_selection_logic(struct aggregator *aggregator);
+static void ad_clear_agg(struct aggregator *aggregator);
+static void ad_initialize_agg(struct aggregator *aggregator);
+static void ad_initialize_port(struct port *port, int lacp_fast);
+static void ad_initialize_lacpdu(struct lacpdu *Lacpdu);
+static void ad_enable_collecting_distributing(struct port *port);
+static void ad_disable_collecting_distributing(struct port *port);
+static void ad_marker_info_received(struct marker *marker_info, struct port *port);
+static void ad_marker_response_received(struct marker *marker, struct port *port);
+
+
+/////////////////////////////////////////////////////////////////////////////////
+// ================= api to bonding and kernel code ==================
+/////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * __get_bond_by_port - get the port's bonding struct
+ * @port: the port we're looking at
+ *
+ * Return @port's bonding struct, or %NULL if it can't be found.
+ */
+static inline struct bonding *__get_bond_by_port(struct port *port)
+{
+	if (port->slave == NULL) {
+		return NULL;
+	}
+
+	return bond_get_bond_by_slave(port->slave);
+}
+
+/**
+ * __get_first_port - get the first port in the bond
+ * @bond: the bond we're looking at
+ *
+ * Return the port of the first slave in @bond, or %NULL if it can't be found.
+ */
+static inline struct port *__get_first_port(struct bonding *bond)
+{
+	if (bond->slave_cnt == 0) {
+		return NULL;
+	}
+
+	return &(SLAVE_AD_INFO(bond->first_slave).port);
+}
+
+/**
+ * __get_next_port - get the next port in the bond
+ * @port: the port we're looking at
+ *
+ * Return the port of the slave that is next in line of @port's slave in the
+ * bond, or %NULL if it can't be found.
+ */
+static inline struct port *__get_next_port(struct port *port)
+{
+	struct bonding *bond = __get_bond_by_port(port);
+	struct slave *slave = port->slave;
+
+	// If there's no bond for this port, or this is the last slave
+	if ((bond == NULL) || (slave->next == bond->first_slave)) {
+		return NULL;
+	}
+
+	return &(SLAVE_AD_INFO(slave->next).port);
+}
+
+/**
+ * __get_first_agg - get the first aggregator in the bond
+ * @bond: the bond we're looking at
+ *
+ * Return the aggregator of the first slave in @bond, or %NULL if it can't be
+ * found.
+ */
+static inline struct aggregator *__get_first_agg(struct port *port)
+{
+	struct bonding *bond = __get_bond_by_port(port);
+
+	// If there's no bond for this port, or bond has no slaves
+	if ((bond == NULL) || (bond->slave_cnt == 0)) {
+		return NULL;
+	}
+
+	return &(SLAVE_AD_INFO(bond->first_slave).aggregator);
+}
+
+/**
+ * __get_next_agg - get the next aggregator in the bond
+ * @aggregator: the aggregator we're looking at
+ *
+ * Return the aggregator of the slave that is next in line of @aggregator's
+ * slave in the bond, or %NULL if it can't be found.
+ */
+static inline struct aggregator *__get_next_agg(struct aggregator *aggregator)
+{
+	struct slave *slave = aggregator->slave;
+	struct bonding *bond = bond_get_bond_by_slave(slave);
+
+	// If there's no bond for this aggregator, or this is the last slave
+	if ((bond == NULL) || (slave->next == bond->first_slave)) {
+		return NULL;
+	}
+
+	return &(SLAVE_AD_INFO(slave->next).aggregator);
+}
+
+/**
+ * __disable_port - disable the port's slave
+ * @port: the port we're looking at
+ *
+ */
+static inline void __disable_port(struct port *port)
+{
+	bond_set_slave_inactive_flags(port->slave);
+}
+
+/**
+ * __enable_port - enable the port's slave, if it's up
+ * @port: the port we're looking at
+ *
+ */
+static inline void __enable_port(struct port *port)
+{
+	struct slave *slave = port->slave;
+
+	if ((slave->link == BOND_LINK_UP) && IS_UP(slave->dev)) {
+		bond_set_slave_active_flags(slave);
+	}
+}
+
+/**
+ * __port_is_enabled - check if the port's slave is in active state
+ * @port: the port we're looking at
+ *
+ */
+static inline int __port_is_enabled(struct port *port)
+{
+	return(port->slave->state == BOND_STATE_ACTIVE);
+}
+
+/**
+ * __get_agg_selection_mode - get the aggregator selection mode
+ * @port: the port we're looking at
+ *
+ * Get the aggregator selection mode. Can be %BANDWIDTH or %COUNT.
+ */
+static inline u32 __get_agg_selection_mode(struct port *port)
+{
+	struct bonding *bond = __get_bond_by_port(port);
+
+	if (bond == NULL) {
+		return AD_BANDWIDTH;
+	}
+
+	return BOND_AD_INFO(bond).agg_select_mode;
+}
+
+/**
+ * __check_agg_selection_timer - check if the selection timer has expired
+ * @port: the port we're looking at
+ *
+ */
+static inline int __check_agg_selection_timer(struct port *port)
+{
+	struct bonding *bond = __get_bond_by_port(port);
+
+	if (bond == NULL) {
+		return 0;
+	}
+
+	return BOND_AD_INFO(bond).agg_select_timer ? 1 : 0;
+}
+
+/**
+ * __get_rx_machine_lock - lock the port's RX machine
+ * @port: the port we're looking at
+ *
+ */
+static inline void __get_rx_machine_lock(struct port *port)
+{
+	spin_lock(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+}
+
+/**
+ * __release_rx_machine_lock - unlock the port's RX machine
+ * @port: the port we're looking at
+ *
+ */
+static inline void __release_rx_machine_lock(struct port *port)
+{
+	spin_unlock(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+}
+
+/**
+ * __get_link_speed - get a port's speed
+ * @port: the port we're looking at
+ *
+ * Return @port's speed in 802.3ad bitmask format. i.e. one of:
+ *     0,
+ *     %AD_LINK_SPEED_BITMASK_10MBPS,
+ *     %AD_LINK_SPEED_BITMASK_100MBPS,
+ *     %AD_LINK_SPEED_BITMASK_1000MBPS
+ */
+static u16 __get_link_speed(struct port *port)
+{
+	struct slave *slave = port->slave;
+	u16 speed;
+
+	/* this if covers only a special case: when the configuration starts with
+	 * link down, it sets the speed to 0.
+	 * This is done in spite of the fact that the e100 driver reports 0 to be
+	 * compatible with MVT in the future.*/
+	if (slave->link != BOND_LINK_UP) {
+		speed=0;
+	} else {
+		switch (slave->speed) {
+		case SPEED_10:
+			speed = AD_LINK_SPEED_BITMASK_10MBPS;
+			break;
+
+		case SPEED_100:
+			speed = AD_LINK_SPEED_BITMASK_100MBPS;
+			break;
+
+		case SPEED_1000:
+			speed = AD_LINK_SPEED_BITMASK_1000MBPS;
+			break;
+
+		default:
+			speed = 0; // unknown speed value from ethtool. shouldn't happen
+			break;
+		}
+	}
+
+	dprintk("Port %d Received link speed %d update from adapter\n", port->actor_port_number, speed);
+	return speed;
+}
+
+/**
+ * __get_duplex - get a port's duplex
+ * @port: the port we're looking at
+ *
+ * Return @port's duplex in 802.3ad bitmask format. i.e.:
+ *     0x01 if in full duplex
+ *     0x00 otherwise
+ */
+static u8 __get_duplex(struct port *port)
+{
+	struct slave *slave = port->slave;
+
+	u8 retval;
+
+	//  handling a special case: when the configuration starts with
+	// link down, it sets the duplex to 0.
+	if (slave->link != BOND_LINK_UP) {
+		retval=0x0;
+	} else {
+		switch (slave->duplex) {
+		case DUPLEX_FULL:
+			retval=0x1;
+			dprintk("Port %d Received status full duplex update from adapter\n", port->actor_port_number);
+			break;
+		case DUPLEX_HALF:
+		default:
+			retval=0x0;
+			dprintk("Port %d Received status NOT full duplex update from adapter\n", port->actor_port_number);
+			break;
+		}
+	}
+	return retval;
+}
+
+/**
+ * __initialize_port_locks - initialize a port's RX machine spinlock
+ * @port: the port we're looking at
+ *
+ */
+static inline void __initialize_port_locks(struct port *port)
+{
+	// make sure it isn't called twice
+	spin_lock_init(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+}
+
+//conversions
+/**
+ * __ntohs_lacpdu - convert the contents of a LACPDU to host byte order
+ * @lacpdu: the speicifed lacpdu
+ *
+ * For each multi-byte field in the lacpdu, convert its content
+ */
+static void __ntohs_lacpdu(struct lacpdu *lacpdu)
+{
+	if (lacpdu) {
+		lacpdu->actor_system_priority =   ntohs(lacpdu->actor_system_priority);
+		lacpdu->actor_key =               ntohs(lacpdu->actor_key);
+		lacpdu->actor_port_priority =     ntohs(lacpdu->actor_port_priority);
+		lacpdu->actor_port =              ntohs(lacpdu->actor_port);
+		lacpdu->partner_system_priority = ntohs(lacpdu->partner_system_priority);
+		lacpdu->partner_key =             ntohs(lacpdu->partner_key);
+		lacpdu->partner_port_priority =   ntohs(lacpdu->partner_port_priority);
+		lacpdu->partner_port =            ntohs(lacpdu->partner_port);
+		lacpdu->collector_max_delay =     ntohs(lacpdu->collector_max_delay);
+	}
+}
+
+/**
+ * __ad_timer_to_ticks - convert a given timer type to AD module ticks
+ * @timer_type:	which timer to operate
+ * @par: timer parameter. see below
+ *
+ * If @timer_type is %current_while_timer, @par indicates long/short timer.
+ * If @timer_type is %periodic_timer, @par is one of %FAST_PERIODIC_TIME,
+ *						    %SLOW_PERIODIC_TIME.
+ */
+static u16 __ad_timer_to_ticks(u16 timer_type, u16 par)
+{
+	u16 retval=0;	 //to silence the compiler
+
+	switch (timer_type) {
+	case AD_CURRENT_WHILE_TIMER:   // for rx machine usage
+		if (par) {	      // for short or long timeout
+			retval = (AD_SHORT_TIMEOUT_TIME*ad_ticks_per_sec); // short timeout
+		} else {
+			retval = (AD_LONG_TIMEOUT_TIME*ad_ticks_per_sec); // long timeout
+		}
+		break;
+	case AD_ACTOR_CHURN_TIMER:	    // for local churn machine
+		retval = (AD_CHURN_DETECTION_TIME*ad_ticks_per_sec);
+		break;
+	case AD_PERIODIC_TIMER:	    // for periodic machine
+		retval = (par*ad_ticks_per_sec); // long timeout
+		break;
+	case AD_PARTNER_CHURN_TIMER:   // for remote churn machine
+		retval = (AD_CHURN_DETECTION_TIME*ad_ticks_per_sec);
+		break;
+	case AD_WAIT_WHILE_TIMER:	    // for selection machine
+		retval = (AD_AGGREGATE_WAIT_TIME*ad_ticks_per_sec);
+		break;
+	}
+	return retval;
+}
+
+
+/////////////////////////////////////////////////////////////////////////////////
+// ================= ad_rx_machine helper functions ==================
+/////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * __record_pdu - record parameters from a received lacpdu
+ * @lacpdu: the lacpdu we've received
+ * @port: the port we're looking at
+ *
+ * Record the parameter values for the Actor carried in a received lacpdu as
+ * the current partner operational parameter values and sets
+ * actor_oper_port_state.defaulted to FALSE.
+ */
+static void __record_pdu(struct lacpdu *lacpdu, struct port *port)
+{
+	// validate lacpdu and port
+	if (lacpdu && port) {
+		// record the new parameter values for the partner operational
+		port->partner_oper_port_number = lacpdu->actor_port;
+		port->partner_oper_port_priority = lacpdu->actor_port_priority;
+		port->partner_oper_system = lacpdu->actor_system;
+		port->partner_oper_system_priority = lacpdu->actor_system_priority;
+		port->partner_oper_key = lacpdu->actor_key;
+		// zero partener's lase states
+		port->partner_oper_port_state = 0;
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_LACP_ACTIVITY);
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_LACP_TIMEOUT);
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_AGGREGATION);
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_SYNCHRONIZATION);
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_COLLECTING);
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_DISTRIBUTING);
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_DEFAULTED);
+		port->partner_oper_port_state |= (lacpdu->actor_state & AD_STATE_EXPIRED);
+
+		// set actor_oper_port_state.defaulted to FALSE
+		port->actor_oper_port_state &= ~AD_STATE_DEFAULTED;
+
+		// set the partner sync. to on if the partner is sync. and the port is matched
+		if ((port->sm_vars & AD_PORT_MATCHED) && (lacpdu->actor_state & AD_STATE_SYNCHRONIZATION)) {
+			port->partner_oper_port_state |= AD_STATE_SYNCHRONIZATION;
+		} else {
+			port->partner_oper_port_state &= ~AD_STATE_SYNCHRONIZATION;
+		}
+	}
+}
+
+/**
+ * __record_default - record default parameters
+ * @port: the port we're looking at
+ *
+ * This function records the default parameter values for the partner carried
+ * in the Partner Admin parameters as the current partner operational parameter
+ * values and sets actor_oper_port_state.defaulted to TRUE.
+ */
+static void __record_default(struct port *port)
+{
+	// validate the port
+	if (port) {
+		// record the partner admin parameters
+		port->partner_oper_port_number = port->partner_admin_port_number;
+		port->partner_oper_port_priority = port->partner_admin_port_priority;
+		port->partner_oper_system = port->partner_admin_system;
+		port->partner_oper_system_priority = port->partner_admin_system_priority;
+		port->partner_oper_key = port->partner_admin_key;
+		port->partner_oper_port_state = port->partner_admin_port_state;
+
+		// set actor_oper_port_state.defaulted to true
+		port->actor_oper_port_state |= AD_STATE_DEFAULTED;
+	}
+}
+
+/**
+ * __update_selected - update a port's Selected variable from a received lacpdu
+ * @lacpdu: the lacpdu we've received
+ * @port: the port we're looking at
+ *
+ * Update the value of the selected variable, using parameter values from a
+ * newly received lacpdu. The parameter values for the Actor carried in the
+ * received PDU are compared with the corresponding operational parameter
+ * values for the ports partner. If one or more of the comparisons shows that
+ * the value(s) received in the PDU differ from the current operational values,
+ * then selected is set to FALSE and actor_oper_port_state.synchronization is
+ * set to out_of_sync. Otherwise, selected remains unchanged.
+ */
+static void __update_selected(struct lacpdu *lacpdu, struct port *port)
+{
+	// validate lacpdu and port
+	if (lacpdu && port) {
+		// check if any parameter is different
+		if ((lacpdu->actor_port != port->partner_oper_port_number) ||
+		    (lacpdu->actor_port_priority != port->partner_oper_port_priority) ||
+		    MAC_ADDRESS_COMPARE(&(lacpdu->actor_system), &(port->partner_oper_system)) ||
+		    (lacpdu->actor_system_priority != port->partner_oper_system_priority) ||
+		    (lacpdu->actor_key != port->partner_oper_key) ||
+		    ((lacpdu->actor_state & AD_STATE_AGGREGATION) != (port->partner_oper_port_state & AD_STATE_AGGREGATION))
+		   ) {
+			// update the state machine Selected variable
+			port->sm_vars &= ~AD_PORT_SELECTED;
+		}
+	}
+}
+
+/**
+ * __update_default_selected - update a port's Selected variable from Partner
+ * @port: the port we're looking at
+ *
+ * This function updates the value of the selected variable, using the partner
+ * administrative parameter values. The administrative values are compared with
+ * the corresponding operational parameter values for the partner. If one or
+ * more of the comparisons shows that the administrative value(s) differ from
+ * the current operational values, then Selected is set to FALSE and
+ * actor_oper_port_state.synchronization is set to OUT_OF_SYNC. Otherwise,
+ * Selected remains unchanged.
+ */
+static void __update_default_selected(struct port *port)
+{
+	// validate the port
+	if (port) {
+		// check if any parameter is different
+		if ((port->partner_admin_port_number != port->partner_oper_port_number) ||
+		    (port->partner_admin_port_priority != port->partner_oper_port_priority) ||
+		    MAC_ADDRESS_COMPARE(&(port->partner_admin_system), &(port->partner_oper_system)) ||
+		    (port->partner_admin_system_priority != port->partner_oper_system_priority) ||
+		    (port->partner_admin_key != port->partner_oper_key) ||
+		    ((port->partner_admin_port_state & AD_STATE_AGGREGATION) != (port->partner_oper_port_state & AD_STATE_AGGREGATION))
+		   ) {
+			// update the state machine Selected variable
+			port->sm_vars &= ~AD_PORT_SELECTED;
+		}
+	}
+}
+
+/**
+ * __choose_matched - update a port's matched variable from a received lacpdu
+ * @lacpdu: the lacpdu we've received
+ * @port: the port we're looking at
+ *
+ * Update the value of the matched variable, using parameter values from a
+ * newly received lacpdu. Parameter values for the partner carried in the
+ * received PDU are compared with the corresponding operational parameter
+ * values for the actor. Matched is set to TRUE if all of these parameters
+ * match and the PDU parameter partner_state.aggregation has the same value as
+ * actor_oper_port_state.aggregation and lacp will actively maintain the link
+ * in the aggregation. Matched is also set to TRUE if the value of
+ * actor_state.aggregation in the received PDU is set to FALSE, i.e., indicates
+ * an individual link and lacp will actively maintain the link. Otherwise,
+ * matched is set to FALSE. LACP is considered to be actively maintaining the
+ * link if either the PDU's actor_state.lacp_activity variable is TRUE or both
+ * the actor's actor_oper_port_state.lacp_activity and the PDU's
+ * partner_state.lacp_activity variables are TRUE.
+ */
+static void __choose_matched(struct lacpdu *lacpdu, struct port *port)
+{
+	// validate lacpdu and port
+	if (lacpdu && port) {
+		// check if all parameters are alike
+		if (((lacpdu->partner_port == port->actor_port_number) &&
+		     (lacpdu->partner_port_priority == port->actor_port_priority) &&
+		     !MAC_ADDRESS_COMPARE(&(lacpdu->partner_system), &(port->actor_system)) &&
+		     (lacpdu->partner_system_priority == port->actor_system_priority) &&
+		     (lacpdu->partner_key == port->actor_oper_port_key) &&
+		     ((lacpdu->partner_state & AD_STATE_AGGREGATION) == (port->actor_oper_port_state & AD_STATE_AGGREGATION))) ||
+		    // or this is individual link(aggregation == FALSE)
+		    ((lacpdu->actor_state & AD_STATE_AGGREGATION) == 0)
+		   ) {
+			// update the state machine Matched variable
+			port->sm_vars |= AD_PORT_MATCHED;
+		} else {
+			port->sm_vars &= ~AD_PORT_MATCHED;
+		}
+	}
+}
+
+/**
+ * __update_ntt - update a port's ntt variable from a received lacpdu
+ * @lacpdu: the lacpdu we've received
+ * @port: the port we're looking at
+ *
+ * Updates the value of the ntt variable, using parameter values from a newly
+ * received lacpdu. The parameter values for the partner carried in the
+ * received PDU are compared with the corresponding operational parameter
+ * values for the Actor. If one or more of the comparisons shows that the
+ * value(s) received in the PDU differ from the current operational values,
+ * then ntt is set to TRUE. Otherwise, ntt remains unchanged.
+ */
+static void __update_ntt(struct lacpdu *lacpdu, struct port *port)
+{
+	// validate lacpdu and port
+	if (lacpdu && port) {
+		// check if any parameter is different
+		if ((lacpdu->partner_port != port->actor_port_number) ||
+		    (lacpdu->partner_port_priority != port->actor_port_priority) ||
+		    MAC_ADDRESS_COMPARE(&(lacpdu->partner_system), &(port->actor_system)) ||
+		    (lacpdu->partner_system_priority != port->actor_system_priority) ||
+		    (lacpdu->partner_key != port->actor_oper_port_key) ||
+		    ((lacpdu->partner_state & AD_STATE_LACP_ACTIVITY) != (port->actor_oper_port_state & AD_STATE_LACP_ACTIVITY)) ||
+		    ((lacpdu->partner_state & AD_STATE_LACP_TIMEOUT) != (port->actor_oper_port_state & AD_STATE_LACP_TIMEOUT)) ||
+		    ((lacpdu->partner_state & AD_STATE_SYNCHRONIZATION) != (port->actor_oper_port_state & AD_STATE_SYNCHRONIZATION)) ||
+		    ((lacpdu->partner_state & AD_STATE_AGGREGATION) != (port->actor_oper_port_state & AD_STATE_AGGREGATION))
+		   ) {
+			// set ntt to be TRUE
+			port->ntt = 1;
+		}
+	}
+}
+
+/**
+ * __attach_bond_to_agg
+ * @port: the port we're looking at
+ *
+ * Handle the attaching of the port's control parser/multiplexer and the
+ * aggregator. This function does nothing since the parser/multiplexer of the
+ * receive and the parser/multiplexer of the aggregator are already combined.
+ */
+static void __attach_bond_to_agg(struct port *port)
+{
+	port=NULL; // just to satisfy the compiler
+	// This function does nothing since the parser/multiplexer of the receive
+	// and the parser/multiplexer of the aggregator are already combined
+}
+
+/**
+ * __detach_bond_from_agg
+ * @port: the port we're looking at
+ *
+ * Handle the detaching of the port's control parser/multiplexer from the
+ * aggregator. This function does nothing since the parser/multiplexer of the
+ * receive and the parser/multiplexer of the aggregator are already combined.
+ */
+static void __detach_bond_from_agg(struct port *port)
+{
+	port=NULL; // just to satisfy the compiler
+	// This function does nothing sience the parser/multiplexer of the receive
+	// and the parser/multiplexer of the aggregator are already combined
+}
+
+/**
+ * __agg_ports_are_ready - check if all ports in an aggregator are ready
+ * @aggregator: the aggregator we're looking at
+ *
+ */
+static int __agg_ports_are_ready(struct aggregator *aggregator)
+{
+	struct port *port;
+	int retval = 1;
+
+	if (aggregator) {
+		// scan all ports in this aggregator to verfy if they are all ready
+		for (port=aggregator->lag_ports; port; port=port->next_port_in_aggregator) {
+			if (!(port->sm_vars & AD_PORT_READY_N)) {
+				retval = 0;
+				break;
+			}
+		}
+	}
+
+	return retval;
+}
+
+/**
+ * __set_agg_ports_ready - set value of Ready bit in all ports of an aggregator
+ * @aggregator: the aggregator we're looking at
+ * @val: Should the ports' ready bit be set on or off
+ *
+ */
+static void __set_agg_ports_ready(struct aggregator *aggregator, int val)
+{
+	struct port *port;
+
+	for (port=aggregator->lag_ports; port; port=port->next_port_in_aggregator) {
+		if (val) {
+			port->sm_vars |= AD_PORT_READY;
+		} else {
+			port->sm_vars &= ~AD_PORT_READY;
+		}
+	}
+}
+
+/**
+ * __get_agg_bandwidth - get the total bandwidth of an aggregator
+ * @aggregator: the aggregator we're looking at
+ *
+ */
+static u32 __get_agg_bandwidth(struct aggregator *aggregator)
+{
+	u32 bandwidth=0;
+	u32 basic_speed;
+
+	if (aggregator->num_of_ports) {
+		basic_speed = __get_link_speed(aggregator->lag_ports);
+		switch (basic_speed) {
+		case AD_LINK_SPEED_BITMASK_1MBPS:
+			bandwidth = aggregator->num_of_ports;
+			break;
+		case AD_LINK_SPEED_BITMASK_10MBPS:
+			bandwidth = aggregator->num_of_ports * 10;
+			break;
+		case AD_LINK_SPEED_BITMASK_100MBPS:
+			bandwidth = aggregator->num_of_ports * 100;
+			break;
+		case AD_LINK_SPEED_BITMASK_1000MBPS:
+			bandwidth = aggregator->num_of_ports * 1000;
+			break;
+		default:
+			bandwidth=0; // to silent the compilor ....
+		}
+	}
+	return bandwidth;
+}
+
+/**
+ * __get_active_agg - get the current active aggregator
+ * @aggregator: the aggregator we're looking at
+ *
+ */
+static struct aggregator *__get_active_agg(struct aggregator *aggregator)
+{
+	struct aggregator *retval = NULL;
+
+	for (; aggregator; aggregator = __get_next_agg(aggregator)) {
+		if (aggregator->is_active) {
+			retval = aggregator;
+			break;
+		}
+	}
+
+	return retval;
+}
+
+/**
+ * __update_lacpdu_from_port - update a port's lacpdu fields
+ * @port: the port we're looking at
+ *
+ */
+static inline void __update_lacpdu_from_port(struct port *port)
+{
+	struct lacpdu *lacpdu = &port->lacpdu;
+
+	/* update current actual Actor parameters */
+	/* lacpdu->subtype                   initialized
+	 * lacpdu->version_number            initialized
+	 * lacpdu->tlv_type_actor_info       initialized
+	 * lacpdu->actor_information_length  initialized
+	 */
+
+	lacpdu->actor_system_priority = port->actor_system_priority;
+	lacpdu->actor_system = port->actor_system;
+	lacpdu->actor_key = port->actor_oper_port_key;
+	lacpdu->actor_port_priority = port->actor_port_priority;
+	lacpdu->actor_port = port->actor_port_number;
+	lacpdu->actor_state = port->actor_oper_port_state;
+
+	/* lacpdu->reserved_3_1              initialized
+	 * lacpdu->tlv_type_partner_info     initialized
+	 * lacpdu->partner_information_length initialized
+	 */
+
+	lacpdu->partner_system_priority = port->partner_oper_system_priority;
+	lacpdu->partner_system = port->partner_oper_system;
+	lacpdu->partner_key = port->partner_oper_key;
+	lacpdu->partner_port_priority = port->partner_oper_port_priority;
+	lacpdu->partner_port = port->partner_oper_port_number;
+	lacpdu->partner_state = port->partner_oper_port_state;
+
+	/* lacpdu->reserved_3_2              initialized
+	 * lacpdu->tlv_type_collector_info   initialized
+	 * lacpdu->collector_information_length initialized
+	 * collector_max_delay                initialized
+	 * reserved_12[12]                   initialized
+	 * tlv_type_terminator               initialized
+	 * terminator_length                 initialized
+	 * reserved_50[50]                   initialized
+	 */
+
+	/* Convert all non u8 parameters to Big Endian for transmit */
+	__ntohs_lacpdu(lacpdu);
+}
+
+//////////////////////////////////////////////////////////////////////////////////////
+// ================= main 802.3ad protocol code ======================================
+//////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * ad_lacpdu_send - send out a lacpdu packet on a given port
+ * @port: the port we're looking at
+ *
+ * Returns:   0 on success
+ *          < 0 on error
+ */
+static int ad_lacpdu_send(struct port *port)
+{
+	struct slave *slave = port->slave;
+	struct sk_buff *skb;
+	struct lacpdu_header *lacpdu_header;
+	int length = sizeof(struct lacpdu_header);
+	struct mac_addr lacpdu_multicast_address = AD_MULTICAST_LACPDU_ADDR;
+
+	skb = dev_alloc_skb(length);
+	if (!skb) {
+		return -ENOMEM;
+	}
+
+	skb->dev = slave->dev;
+	skb->mac.raw = skb->data;
+	skb->nh.raw = skb->data + ETH_HLEN;
+	skb->protocol = PKT_TYPE_LACPDU;
+	skb->priority = TC_PRIO_CONTROL;
+
+	lacpdu_header = (struct lacpdu_header *)skb_put(skb, length);
+
+	lacpdu_header->ad_header.destination_address = lacpdu_multicast_address;
+	/* Note: source addres is set to be the member's PERMANENT address, because we use it
+	   to identify loopback lacpdus in receive. */
+	lacpdu_header->ad_header.source_address = *((struct mac_addr *)(slave->perm_hwaddr));
+	lacpdu_header->ad_header.length_type = PKT_TYPE_LACPDU;
+
+	lacpdu_header->lacpdu = port->lacpdu; // struct copy
+
+	dev_queue_xmit(skb);
+
+	return 0;
+}
+
+/**
+ * ad_marker_send - send marker information/response on a given port
+ * @port: the port we're looking at
+ * @marker: marker data to send
+ *
+ * Returns:   0 on success
+ *          < 0 on error
+ */
+static int ad_marker_send(struct port *port, struct marker *marker)
+{
+	struct slave *slave = port->slave;
+	struct sk_buff *skb;
+	struct marker_header *marker_header;
+	int length = sizeof(struct marker_header);
+	struct mac_addr lacpdu_multicast_address = AD_MULTICAST_LACPDU_ADDR;
+
+	skb = dev_alloc_skb(length + 16);
+	if (!skb) {
+		return -ENOMEM;
+	}
+
+	skb_reserve(skb, 16);
+
+	skb->dev = slave->dev;
+	skb->mac.raw = skb->data;
+	skb->nh.raw = skb->data + ETH_HLEN;
+	skb->protocol = PKT_TYPE_LACPDU;
+
+	marker_header = (struct marker_header *)skb_put(skb, length);
+
+	marker_header->ad_header.destination_address = lacpdu_multicast_address;
+	/* Note: source addres is set to be the member's PERMANENT address, because we use it
+	   to identify loopback MARKERs in receive. */
+	marker_header->ad_header.source_address = *((struct mac_addr *)(slave->perm_hwaddr));
+	marker_header->ad_header.length_type = PKT_TYPE_LACPDU;
+
+	marker_header->marker = *marker; // struct copy
+
+	dev_queue_xmit(skb);
+
+	return 0;
+}
+
+/**
+ * ad_mux_machine - handle a port's mux state machine
+ * @port: the port we're looking at
+ *
+ */
+static void ad_mux_machine(struct port *port)
+{
+	mux_states_t last_state;
+
+	// keep current State Machine state to compare later if it was changed
+	last_state = port->sm_mux_state;
+
+	if (port->sm_vars & AD_PORT_BEGIN) {
+		port->sm_mux_state = AD_MUX_DETACHED;		 // next state
+	} else {
+		switch (port->sm_mux_state) {
+		case AD_MUX_DETACHED:
+			if ((port->sm_vars & AD_PORT_SELECTED) || (port->sm_vars & AD_PORT_STANDBY)) { // if SELECTED or STANDBY
+				port->sm_mux_state = AD_MUX_WAITING; // next state
+			}
+			break;
+		case AD_MUX_WAITING:
+			// if SELECTED == FALSE return to DETACH state
+			if (!(port->sm_vars & AD_PORT_SELECTED)) { // if UNSELECTED
+				port->sm_vars &= ~AD_PORT_READY_N;
+				// in order to withhold the Selection Logic to check all ports READY_N value
+				// every callback cycle to update ready variable, we check READY_N and update READY here
+				__set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
+				port->sm_mux_state = AD_MUX_DETACHED;	 // next state
+				break;
+			}
+
+			// check if the wait_while_timer expired
+			if (port->sm_mux_timer_counter && !(--port->sm_mux_timer_counter)) {
+				port->sm_vars |= AD_PORT_READY_N;
+			}
+
+			// in order to withhold the selection logic to check all ports READY_N value
+			// every callback cycle to update ready variable, we check READY_N and update READY here
+			__set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
+
+			// if the wait_while_timer expired, and the port is in READY state, move to ATTACHED state
+			if ((port->sm_vars & AD_PORT_READY) && !port->sm_mux_timer_counter) {
+				port->sm_mux_state = AD_MUX_ATTACHED;	 // next state
+			}
+			break;
+		case AD_MUX_ATTACHED:
+			// check also if agg_select_timer expired(so the edable port will take place only after this timer)
+			if ((port->sm_vars & AD_PORT_SELECTED) && (port->partner_oper_port_state & AD_STATE_SYNCHRONIZATION) && !__check_agg_selection_timer(port)) {
+				port->sm_mux_state = AD_MUX_COLLECTING_DISTRIBUTING;// next state
+			} else if (!(port->sm_vars & AD_PORT_SELECTED) || (port->sm_vars & AD_PORT_STANDBY)) {	  // if UNSELECTED or STANDBY
+				port->sm_vars &= ~AD_PORT_READY_N;
+				// in order to withhold the selection logic to check all ports READY_N value
+				// every callback cycle to update ready variable, we check READY_N and update READY here
+				__set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
+				port->sm_mux_state = AD_MUX_DETACHED;// next state
+			}
+			break;
+		case AD_MUX_COLLECTING_DISTRIBUTING:
+			if (!(port->sm_vars & AD_PORT_SELECTED) || (port->sm_vars & AD_PORT_STANDBY) ||
+			    !(port->partner_oper_port_state & AD_STATE_SYNCHRONIZATION)
+			   ) {
+				port->sm_mux_state = AD_MUX_ATTACHED;// next state
+
+			} else {
+				// if port state hasn't changed make
+				// sure that a collecting distributing
+				// port in an active aggregator is enabled
+				if (port->aggregator &&
+				    port->aggregator->is_active &&
+				    !__port_is_enabled(port)) {
+
+					__enable_port(port);
+				}
+			}
+			break;
+		default:    //to silence the compiler
+			break;
+		}
+	}
+
+	// check if the state machine was changed
+	if (port->sm_mux_state != last_state) {
+		dprintk("Mux Machine: Port=%d, Last State=%d, Curr State=%d\n", port->actor_port_number, last_state, port->sm_mux_state);
+		switch (port->sm_mux_state) {
+		case AD_MUX_DETACHED:
+			__detach_bond_from_agg(port);
+			port->actor_oper_port_state &= ~AD_STATE_SYNCHRONIZATION;
+			ad_disable_collecting_distributing(port);
+			port->actor_oper_port_state &= ~AD_STATE_COLLECTING;
+			port->actor_oper_port_state &= ~AD_STATE_DISTRIBUTING;
+			port->ntt = 1;
+			break;
+		case AD_MUX_WAITING:
+			port->sm_mux_timer_counter = __ad_timer_to_ticks(AD_WAIT_WHILE_TIMER, 0);
+			break;
+		case AD_MUX_ATTACHED:
+			__attach_bond_to_agg(port);
+			port->actor_oper_port_state |= AD_STATE_SYNCHRONIZATION;
+			port->actor_oper_port_state &= ~AD_STATE_COLLECTING;
+			port->actor_oper_port_state &= ~AD_STATE_DISTRIBUTING;
+			ad_disable_collecting_distributing(port);
+			port->ntt = 1;
+			break;
+		case AD_MUX_COLLECTING_DISTRIBUTING:
+			port->actor_oper_port_state |= AD_STATE_COLLECTING;
+			port->actor_oper_port_state |= AD_STATE_DISTRIBUTING;
+			ad_enable_collecting_distributing(port);
+			port->ntt = 1;
+			break;
+		default:    //to silence the compiler
+			break;
+		}
+	}
+}
+
+/**
+ * ad_rx_machine - handle a port's rx State Machine
+ * @lacpdu: the lacpdu we've received
+ * @port: the port we're looking at
+ *
+ * If lacpdu arrived, stop previous timer (if exists) and set the next state as
+ * CURRENT. If timer expired set the state machine in the proper state.
+ * In other cases, this function checks if we need to switch to other state.
+ */
+static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
+{
+	rx_states_t last_state;
+
+	// Lock to prevent 2 instances of this function to run simultaneously(rx interrupt and periodic machine callback)
+	__get_rx_machine_lock(port);
+
+	// keep current State Machine state to compare later if it was changed
+	last_state = port->sm_rx_state;
+
+	// check if state machine should change state
+	// first, check if port was reinitialized
+	if (port->sm_vars & AD_PORT_BEGIN) {
+		port->sm_rx_state = AD_RX_INITIALIZE;		    // next state
+	}
+	// check if port is not enabled
+	else if (!(port->sm_vars & AD_PORT_BEGIN) && !port->is_enabled && !(port->sm_vars & AD_PORT_MOVED)) {
+		port->sm_rx_state = AD_RX_PORT_DISABLED;	    // next state
+	}
+	// check if new lacpdu arrived
+	else if (lacpdu && ((port->sm_rx_state == AD_RX_EXPIRED) || (port->sm_rx_state == AD_RX_DEFAULTED) || (port->sm_rx_state == AD_RX_CURRENT))) {
+		port->sm_rx_timer_counter = 0; // zero timer
+		port->sm_rx_state = AD_RX_CURRENT;
+	} else {
+		// if timer is on, and if it is expired
+		if (port->sm_rx_timer_counter && !(--port->sm_rx_timer_counter)) {
+			switch (port->sm_rx_state) {
+			case AD_RX_EXPIRED:
+				port->sm_rx_state = AD_RX_DEFAULTED;		// next state
+				break;
+			case AD_RX_CURRENT:
+				port->sm_rx_state = AD_RX_EXPIRED;	    // next state
+				break;
+			default:    //to silence the compiler
+				break;
+			}
+		} else {
+			// if no lacpdu arrived and no timer is on
+			switch (port->sm_rx_state) {
+			case AD_RX_PORT_DISABLED:
+				if (port->sm_vars & AD_PORT_MOVED) {
+					port->sm_rx_state = AD_RX_INITIALIZE;	    // next state
+				} else if (port->is_enabled && (port->sm_vars & AD_PORT_LACP_ENABLED)) {
+					port->sm_rx_state = AD_RX_EXPIRED;	// next state
+				} else if (port->is_enabled && ((port->sm_vars & AD_PORT_LACP_ENABLED) == 0)) {
+					port->sm_rx_state = AD_RX_LACP_DISABLED;    // next state
+				}
+				break;
+			default:    //to silence the compiler
+				break;
+
+			}
+		}
+	}
+
+	// check if the State machine was changed or new lacpdu arrived
+	if ((port->sm_rx_state != last_state) || (lacpdu)) {
+		dprintk("Rx Machine: Port=%d, Last State=%d, Curr State=%d\n", port->actor_port_number, last_state, port->sm_rx_state);
+		switch (port->sm_rx_state) {
+		case AD_RX_INITIALIZE:
+			if (!(port->actor_oper_port_key & AD_DUPLEX_KEY_BITS)) {
+				port->sm_vars &= ~AD_PORT_LACP_ENABLED;
+			} else {
+				port->sm_vars |= AD_PORT_LACP_ENABLED;
+			}
+			port->sm_vars &= ~AD_PORT_SELECTED;
+			__record_default(port);
+			port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
+			port->sm_vars &= ~AD_PORT_MOVED;
+			port->sm_rx_state = AD_RX_PORT_DISABLED;	// next state
+
+			/*- Fall Through -*/
+
+		case AD_RX_PORT_DISABLED:
+			port->sm_vars &= ~AD_PORT_MATCHED;
+			break;
+		case AD_RX_LACP_DISABLED:
+			port->sm_vars &= ~AD_PORT_SELECTED;
+			__record_default(port);
+			port->partner_oper_port_state &= ~AD_STATE_AGGREGATION;
+			port->sm_vars |= AD_PORT_MATCHED;
+			port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
+			break;
+		case AD_RX_EXPIRED:
+			//Reset of the Synchronization flag. (Standard 43.4.12)
+			//This reset cause to disable this port in the COLLECTING_DISTRIBUTING state of the
+			//mux machine in case of EXPIRED even if LINK_DOWN didn't arrive for the port.
+			port->partner_oper_port_state &= ~AD_STATE_SYNCHRONIZATION;
+			port->sm_vars &= ~AD_PORT_MATCHED;
+			port->partner_oper_port_state |= AD_SHORT_TIMEOUT;
+			port->sm_rx_timer_counter = __ad_timer_to_ticks(AD_CURRENT_WHILE_TIMER, (u16)(AD_SHORT_TIMEOUT));
+			port->actor_oper_port_state |= AD_STATE_EXPIRED;
+			break;
+		case AD_RX_DEFAULTED:
+			__update_default_selected(port);
+			__record_default(port);
+			port->sm_vars |= AD_PORT_MATCHED;
+			port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
+			break;
+		case AD_RX_CURRENT:
+			// detect loopback situation
+			if (!MAC_ADDRESS_COMPARE(&(lacpdu->actor_system), &(port->actor_system))) {
+				// INFO_RECEIVED_LOOPBACK_FRAMES
+				printk(KERN_ERR DRV_NAME ": An illegal loopback occurred on adapter (%s)\n",
+						port->slave->dev->name);
+				printk(KERN_ERR "Check the configuration to verify that all Adapters "
+						"are connected to 802.3ad compliant switch ports\n");
+				__release_rx_machine_lock(port);
+				return;
+			}
+			__update_selected(lacpdu, port);
+			__update_ntt(lacpdu, port);
+			__record_pdu(lacpdu, port);
+			__choose_matched(lacpdu, port);
+			port->sm_rx_timer_counter = __ad_timer_to_ticks(AD_CURRENT_WHILE_TIMER, (u16)(port->actor_oper_port_state & AD_STATE_LACP_TIMEOUT));
+			port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
+			// verify that if the aggregator is enabled, the port is enabled too.
+			//(because if the link goes down for a short time, the 802.3ad will not
+			// catch it, and the port will continue to be disabled)
+			if (port->aggregator && port->aggregator->is_active && !__port_is_enabled(port)) {
+				__enable_port(port);
+			}
+			break;
+		default:    //to silence the compiler
+			break;
+		}
+	}
+	__release_rx_machine_lock(port);
+}
+
+/**
+ * ad_tx_machine - handle a port's tx state machine
+ * @port: the port we're looking at
+ *
+ */
+static void ad_tx_machine(struct port *port)
+{
+	// check if tx timer expired, to verify that we do not send more than 3 packets per second
+	if (port->sm_tx_timer_counter && !(--port->sm_tx_timer_counter)) {
+		// check if there is something to send
+		if (port->ntt && (port->sm_vars & AD_PORT_LACP_ENABLED)) {
+			__update_lacpdu_from_port(port);
+			// send the lacpdu
+			if (ad_lacpdu_send(port) >= 0) {
+				dprintk("Sent LACPDU on port %d\n", port->actor_port_number);
+				// mark ntt as false, so it will not be sent again until demanded
+				port->ntt = 0;
+			}
+		}
+		// restart tx timer(to verify that we will not exceed AD_MAX_TX_IN_SECOND
+		port->sm_tx_timer_counter=ad_ticks_per_sec/AD_MAX_TX_IN_SECOND;
+	}
+}
+
+/**
+ * ad_periodic_machine - handle a port's periodic state machine
+ * @port: the port we're looking at
+ *
+ * Turn ntt flag on priodically to perform periodic transmission of lacpdu's.
+ */
+static void ad_periodic_machine(struct port *port)
+{
+	periodic_states_t last_state;
+
+	// keep current state machine state to compare later if it was changed
+	last_state = port->sm_periodic_state;
+
+	// check if port was reinitialized
+	if (((port->sm_vars & AD_PORT_BEGIN) || !(port->sm_vars & AD_PORT_LACP_ENABLED) || !port->is_enabled) ||
+	    (!(port->actor_oper_port_state & AD_STATE_LACP_ACTIVITY) && !(port->partner_oper_port_state & AD_STATE_LACP_ACTIVITY))
+	   ) {
+		port->sm_periodic_state = AD_NO_PERIODIC;	     // next state
+	}
+	// check if state machine should change state
+	else if (port->sm_periodic_timer_counter) {
+		// check if periodic state machine expired
+		if (!(--port->sm_periodic_timer_counter)) {
+			// if expired then do tx
+			port->sm_periodic_state = AD_PERIODIC_TX;    // next state
+		} else {
+			// If not expired, check if there is some new timeout parameter from the partner state
+			switch (port->sm_periodic_state) {
+			case AD_FAST_PERIODIC:
+				if (!(port->partner_oper_port_state & AD_STATE_LACP_TIMEOUT)) {
+					port->sm_periodic_state = AD_SLOW_PERIODIC;  // next state
+				}
+				break;
+			case AD_SLOW_PERIODIC:
+				if ((port->partner_oper_port_state & AD_STATE_LACP_TIMEOUT)) {
+					// stop current timer
+					port->sm_periodic_timer_counter = 0;
+					port->sm_periodic_state = AD_PERIODIC_TX;	 // next state
+				}
+				break;
+			default:    //to silence the compiler
+				break;
+			}
+		}
+	} else {
+		switch (port->sm_periodic_state) {
+		case AD_NO_PERIODIC:
+			port->sm_periodic_state = AD_FAST_PERIODIC;	 // next state
+			break;
+		case AD_PERIODIC_TX:
+			if (!(port->partner_oper_port_state & AD_STATE_LACP_TIMEOUT)) {
+				port->sm_periodic_state = AD_SLOW_PERIODIC;  // next state
+			} else {
+				port->sm_periodic_state = AD_FAST_PERIODIC;  // next state
+			}
+			break;
+		default:    //to silence the compiler
+			break;
+		}
+	}
+
+	// check if the state machine was changed
+	if (port->sm_periodic_state != last_state) {
+		dprintk("Periodic Machine: Port=%d, Last State=%d, Curr State=%d\n", port->actor_port_number, last_state, port->sm_periodic_state);
+		switch (port->sm_periodic_state) {
+		case AD_NO_PERIODIC:
+			port->sm_periodic_timer_counter = 0;	   // zero timer
+			break;
+		case AD_FAST_PERIODIC:
+			port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_FAST_PERIODIC_TIME))-1; // decrement 1 tick we lost in the PERIODIC_TX cycle
+			break;
+		case AD_SLOW_PERIODIC:
+			port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_SLOW_PERIODIC_TIME))-1; // decrement 1 tick we lost in the PERIODIC_TX cycle
+			break;
+		case AD_PERIODIC_TX:
+			port->ntt = 1;
+			break;
+		default:    //to silence the compiler
+			break;
+		}
+	}
+}
+
+/**
+ * ad_port_selection_logic - select aggregation groups
+ * @port: the port we're looking at
+ *
+ * Select aggregation groups, and assign each port for it's aggregetor. The
+ * selection logic is called in the inititalization (after all the handshkes),
+ * and after every lacpdu receive (if selected is off).
+ */
+static void ad_port_selection_logic(struct port *port)
+{
+	struct aggregator *aggregator, *free_aggregator = NULL, *temp_aggregator;
+	struct port *last_port = NULL, *curr_port;
+	int found = 0;
+
+	// if the port is already Selected, do nothing
+	if (port->sm_vars & AD_PORT_SELECTED) {
+		return;
+	}
+
+	// if the port is connected to other aggregator, detach it
+	if (port->aggregator) {
+		// detach the port from its former aggregator
+		temp_aggregator=port->aggregator;
+		for (curr_port=temp_aggregator->lag_ports; curr_port; last_port=curr_port, curr_port=curr_port->next_port_in_aggregator) {
+			if (curr_port == port) {
+				temp_aggregator->num_of_ports--;
+				if (!last_port) {// if it is the first port attached to the aggregator
+					temp_aggregator->lag_ports=port->next_port_in_aggregator;
+				} else {// not the first port attached to the aggregator
+					last_port->next_port_in_aggregator=port->next_port_in_aggregator;
+				}
+
+				// clear the port's relations to this aggregator
+				port->aggregator = NULL;
+				port->next_port_in_aggregator=NULL;
+				port->actor_port_aggregator_identifier=0;
+
+				dprintk("Port %d left LAG %d\n", port->actor_port_number, temp_aggregator->aggregator_identifier);
+				// if the aggregator is empty, clear its parameters, and set it ready to be attached
+				if (!temp_aggregator->lag_ports) {
+					ad_clear_agg(temp_aggregator);
+				}
+				break;
+			}
+		}
+		if (!curr_port) { // meaning: the port was related to an aggregator but was not on the aggregator port list
+			printk(KERN_WARNING DRV_NAME ": Warning: Port %d (on %s) was "
+			       "related to aggregator %d but was not on its port list\n",
+			       port->actor_port_number, port->slave->dev->name,
+			       port->aggregator->aggregator_identifier);
+		}
+	}
+	// search on all aggregators for a suitable aggregator for this port
+	for (aggregator = __get_first_agg(port); aggregator;
+	     aggregator = __get_next_agg(aggregator)) {
+
+		// keep a free aggregator for later use(if needed)
+		if (!aggregator->lag_ports) {
+			if (!free_aggregator) {
+				free_aggregator=aggregator;
+			}
+			continue;
+		}
+		// check if current aggregator suits us
+		if (((aggregator->actor_oper_aggregator_key == port->actor_oper_port_key) && // if all parameters match AND
+		     !MAC_ADDRESS_COMPARE(&(aggregator->partner_system), &(port->partner_oper_system)) &&
+		     (aggregator->partner_system_priority == port->partner_oper_system_priority) &&
+		     (aggregator->partner_oper_aggregator_key == port->partner_oper_key)
+		    ) &&
+		    ((MAC_ADDRESS_COMPARE(&(port->partner_oper_system), &(null_mac_addr)) && // partner answers
+		      !aggregator->is_individual)  // but is not individual OR
+		    )
+		   ) {
+			// attach to the founded aggregator
+			port->aggregator = aggregator;
+			port->actor_port_aggregator_identifier=port->aggregator->aggregator_identifier;
+			port->next_port_in_aggregator=aggregator->lag_ports;
+			port->aggregator->num_of_ports++;
+			aggregator->lag_ports=port;
+			dprintk("Port %d joined LAG %d(existing LAG)\n", port->actor_port_number, port->aggregator->aggregator_identifier);
+
+			// mark this port as selected
+			port->sm_vars |= AD_PORT_SELECTED;
+			found = 1;
+			break;
+		}
+	}
+
+	// the port couldn't find an aggregator - attach it to a new aggregator
+	if (!found) {
+		if (free_aggregator) {
+			// assign port a new aggregator
+			port->aggregator = free_aggregator;
+			port->actor_port_aggregator_identifier=port->aggregator->aggregator_identifier;
+
+			// update the new aggregator's parameters
+			// if port was responsed from the end-user
+			if (port->actor_oper_port_key & AD_DUPLEX_KEY_BITS) {// if port is full duplex
+				port->aggregator->is_individual = 0;
+			} else {
+				port->aggregator->is_individual = 1;
+			}
+
+			port->aggregator->actor_admin_aggregator_key = port->actor_admin_port_key;
+			port->aggregator->actor_oper_aggregator_key = port->actor_oper_port_key;
+			port->aggregator->partner_system=port->partner_oper_system;
+			port->aggregator->partner_system_priority = port->partner_oper_system_priority;
+			port->aggregator->partner_oper_aggregator_key = port->partner_oper_key;
+			port->aggregator->receive_state = 1;
+			port->aggregator->transmit_state = 1;
+			port->aggregator->lag_ports = port;
+			port->aggregator->num_of_ports++;
+
+			// mark this port as selected
+			port->sm_vars |= AD_PORT_SELECTED;
+
+			dprintk("Port %d joined LAG %d(new LAG)\n", port->actor_port_number, port->aggregator->aggregator_identifier);
+		} else {
+			printk(KERN_ERR DRV_NAME ": Port %d (on %s) did not find a suitable aggregator\n",
+			       port->actor_port_number, port->slave->dev->name);
+		}
+	}
+	// if all aggregator's ports are READY_N == TRUE, set ready=TRUE in all aggregator's ports
+	// else set ready=FALSE in all aggregator's ports
+	__set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
+
+	if (!__check_agg_selection_timer(port) && (aggregator = __get_first_agg(port))) {
+		ad_agg_selection_logic(aggregator);
+	}
+}
+
+/**
+ * ad_agg_selection_logic - select an aggregation group for a team
+ * @aggregator: the aggregator we're looking at
+ *
+ * It is assumed that only one aggregator may be selected for a team.
+ * The logic of this function is to select (at first time) the aggregator with
+ * the most ports attached to it, and to reselect the active aggregator only if
+ * the previous aggregator has no more ports related to it.
+ *
+ * FIXME: this function MUST be called with the first agg in the bond, or
+ * __get_active_agg() won't work correctly. This function should be better
+ * called with the bond itself, and retrieve the first agg from it.
+ */
+static void ad_agg_selection_logic(struct aggregator *aggregator)
+{
+	struct aggregator *best_aggregator = NULL, *active_aggregator = NULL;
+	struct aggregator *last_active_aggregator = NULL, *origin_aggregator;
+	struct port *port;
+	u16 num_of_aggs=0;
+
+	origin_aggregator = aggregator;
+
+	//get current active aggregator
+	last_active_aggregator = __get_active_agg(aggregator);
+
+	// search for the aggregator with the most ports attached to it.
+	do {
+		// count how many candidate lag's we have
+		if (aggregator->lag_ports) {
+			num_of_aggs++;
+		}
+		if (aggregator->is_active && !aggregator->is_individual &&   // if current aggregator is the active aggregator
+		    MAC_ADDRESS_COMPARE(&(aggregator->partner_system), &(null_mac_addr))) {   // and partner answers to 802.3ad PDUs
+			if (aggregator->num_of_ports) {	// if any ports attached to the current aggregator
+				best_aggregator=NULL;	 // disregard the best aggregator that was chosen by now
+				break;		 // stop the selection of other aggregator if there are any ports attached to this active aggregator
+			} else { // no ports attached to this active aggregator
+				aggregator->is_active = 0; // mark this aggregator as not active anymore
+			}
+		}
+		if (aggregator->num_of_ports) {	// if any ports attached
+			if (best_aggregator) {	// if there is a candidte aggregator
+				//The reasons for choosing new best aggregator:
+				// 1. if current agg is NOT individual and the best agg chosen so far is individual OR
+				// current and best aggs are both individual or both not individual, AND
+				// 2a.  current agg partner reply but best agg partner do not reply OR
+				// 2b.  current agg partner reply OR current agg partner do not reply AND best agg partner also do not reply AND
+				//      current has more ports/bandwidth, or same amount of ports but current has faster ports, THEN
+				//      current agg become best agg so far
+
+				//if current agg is NOT individual and the best agg chosen so far is individual change best_aggregator
+				if (!aggregator->is_individual && best_aggregator->is_individual) {
+					best_aggregator=aggregator;
+				}
+				// current and best aggs are both individual or both not individual
+				else if ((aggregator->is_individual && best_aggregator->is_individual) ||
+					 (!aggregator->is_individual && !best_aggregator->is_individual)) {
+					//  current and best aggs are both individual or both not individual AND
+					//  current agg partner reply but best agg partner do not reply
+					if ((MAC_ADDRESS_COMPARE(&(aggregator->partner_system), &(null_mac_addr)) &&
+					     !MAC_ADDRESS_COMPARE(&(best_aggregator->partner_system), &(null_mac_addr)))) {
+						best_aggregator=aggregator;
+					}
+					//  current agg partner reply OR current agg partner do not reply AND best agg partner also do not reply
+					else if (! (!MAC_ADDRESS_COMPARE(&(aggregator->partner_system), &(null_mac_addr)) &&
+						    MAC_ADDRESS_COMPARE(&(best_aggregator->partner_system), &(null_mac_addr)))) {
+						if ((__get_agg_selection_mode(aggregator->lag_ports) == AD_BANDWIDTH)&&
+						    (__get_agg_bandwidth(aggregator) > __get_agg_bandwidth(best_aggregator))) {
+							best_aggregator=aggregator;
+						} else if (__get_agg_selection_mode(aggregator->lag_ports) == AD_COUNT) {
+							if (((aggregator->num_of_ports > best_aggregator->num_of_ports) &&
+							     (aggregator->actor_oper_aggregator_key & AD_SPEED_KEY_BITS))||
+							    ((aggregator->num_of_ports == best_aggregator->num_of_ports) &&
+							     ((u16)(aggregator->actor_oper_aggregator_key & AD_SPEED_KEY_BITS) >
+							      (u16)(best_aggregator->actor_oper_aggregator_key & AD_SPEED_KEY_BITS)))) {
+								best_aggregator=aggregator;
+							}
+						}
+					}
+				}
+			} else {
+				best_aggregator=aggregator;
+			}
+		}
+		aggregator->is_active = 0; // mark all aggregators as not active anymore
+	} while ((aggregator = __get_next_agg(aggregator)));
+
+	// if we have new aggregator selected, don't replace the old aggregator if it has an answering partner,
+	// or if both old aggregator and new aggregator don't have answering partner
+	if (best_aggregator) {
+		if (last_active_aggregator && last_active_aggregator->lag_ports && last_active_aggregator->lag_ports->is_enabled &&
+		    (MAC_ADDRESS_COMPARE(&(last_active_aggregator->partner_system), &(null_mac_addr)) ||   // partner answers OR
+		     (!MAC_ADDRESS_COMPARE(&(last_active_aggregator->partner_system), &(null_mac_addr)) &&	// both old and new
+		      !MAC_ADDRESS_COMPARE(&(best_aggregator->partner_system), &(null_mac_addr))))     // partner do not answer
+		   ) {
+			// if new aggregator has link, and old aggregator does not, replace old aggregator.(do nothing)
+			// -> don't replace otherwise.
+			if (!(!last_active_aggregator->actor_oper_aggregator_key && best_aggregator->actor_oper_aggregator_key)) {
+				best_aggregator=NULL;
+				last_active_aggregator->is_active = 1; // don't replace good old aggregator
+
+			}
+		}
+	}
+
+	// if there is new best aggregator, activate it
+	if (best_aggregator) {
+		for (aggregator = __get_first_agg(best_aggregator->lag_ports);
+		    aggregator;
+		    aggregator = __get_next_agg(aggregator)) {
+
+			dprintk("Agg=%d; Ports=%d; a key=%d; p key=%d; Indiv=%d; Active=%d\n",
+					aggregator->aggregator_identifier, aggregator->num_of_ports,
+					aggregator->actor_oper_aggregator_key, aggregator->partner_oper_aggregator_key,
+					aggregator->is_individual, aggregator->is_active);
+		}
+
+		// check if any partner replys
+		if (best_aggregator->is_individual) {
+			printk(KERN_WARNING DRV_NAME ": Warning: No 802.3ad response from the link partner "
+					"for any adapters in the bond\n");
+		}
+
+		// check if there are more than one aggregator
+		if (num_of_aggs > 1) {
+			dprintk("Warning: More than one Link Aggregation Group was "
+				"found in the bond. Only one group will function in the bond\n");
+		}
+
+		best_aggregator->is_active = 1;
+		dprintk("LAG %d choosed as the active LAG\n", best_aggregator->aggregator_identifier);
+		dprintk("Agg=%d; Ports=%d; a key=%d; p key=%d; Indiv=%d; Active=%d\n",
+				best_aggregator->aggregator_identifier, best_aggregator->num_of_ports,
+				best_aggregator->actor_oper_aggregator_key, best_aggregator->partner_oper_aggregator_key,
+				best_aggregator->is_individual, best_aggregator->is_active);
+
+		// disable the ports that were related to the former active_aggregator
+		if (last_active_aggregator) {
+			for (port=last_active_aggregator->lag_ports; port; port=port->next_port_in_aggregator) {
+				__disable_port(port);
+			}
+		}
+	}
+
+	// if the selected aggregator is of join individuals(partner_system is NULL), enable their ports
+	active_aggregator = __get_active_agg(origin_aggregator);
+
+	if (active_aggregator) {
+		if (!MAC_ADDRESS_COMPARE(&(active_aggregator->partner_system), &(null_mac_addr))) {
+			for (port=active_aggregator->lag_ports; port; port=port->next_port_in_aggregator) {
+				__enable_port(port);
+			}
+		}
+	}
+}
+
+/**
+ * ad_clear_agg - clear a given aggregator's parameters
+ * @aggregator: the aggregator we're looking at
+ *
+ */
+static void ad_clear_agg(struct aggregator *aggregator)
+{
+	if (aggregator) {
+		aggregator->is_individual = 0;
+		aggregator->actor_admin_aggregator_key = 0;
+		aggregator->actor_oper_aggregator_key = 0;
+		aggregator->partner_system = null_mac_addr;
+		aggregator->partner_system_priority = 0;
+		aggregator->partner_oper_aggregator_key = 0;
+		aggregator->receive_state = 0;
+		aggregator->transmit_state = 0;
+		aggregator->lag_ports = NULL;
+		aggregator->is_active = 0;
+		aggregator->num_of_ports = 0;
+		dprintk("LAG %d was cleared\n", aggregator->aggregator_identifier);
+	}
+}
+
+/**
+ * ad_initialize_agg - initialize a given aggregator's parameters
+ * @aggregator: the aggregator we're looking at
+ *
+ */
+static void ad_initialize_agg(struct aggregator *aggregator)
+{
+	if (aggregator) {
+		ad_clear_agg(aggregator);
+
+		aggregator->aggregator_mac_address = null_mac_addr;
+		aggregator->aggregator_identifier = 0;
+		aggregator->slave = NULL;
+	}
+}
+
+/**
+ * ad_initialize_port - initialize a given port's parameters
+ * @aggregator: the aggregator we're looking at
+ * @lacp_fast: boolean. whether fast periodic should be used
+ *
+ */
+static void ad_initialize_port(struct port *port, int lacp_fast)
+{
+	if (port) {
+		port->actor_port_number = 1;
+		port->actor_port_priority = 0xff;
+		port->actor_system = null_mac_addr;
+		port->actor_system_priority = 0xffff;
+		port->actor_port_aggregator_identifier = 0;
+		port->ntt = 0;
+		port->actor_admin_port_key = 1;
+		port->actor_oper_port_key  = 1;
+		port->actor_admin_port_state = AD_STATE_AGGREGATION | AD_STATE_LACP_ACTIVITY;
+		port->actor_oper_port_state  = AD_STATE_AGGREGATION | AD_STATE_LACP_ACTIVITY;
+
+		if (lacp_fast) {
+			port->actor_oper_port_state |= AD_STATE_LACP_TIMEOUT;
+		}
+
+		port->partner_admin_system = null_mac_addr;
+		port->partner_oper_system  = null_mac_addr;
+		port->partner_admin_system_priority = 0xffff;
+		port->partner_oper_system_priority  = 0xffff;
+		port->partner_admin_key = 1;
+		port->partner_oper_key  = 1;
+		port->partner_admin_port_number = 1;
+		port->partner_oper_port_number  = 1;
+		port->partner_admin_port_priority = 0xff;
+		port->partner_oper_port_priority  = 0xff;
+		port->partner_admin_port_state = 1;
+		port->partner_oper_port_state  = 1;
+		port->is_enabled = 1;
+		// ****** private parameters ******
+		port->sm_vars = 0x3;
+		port->sm_rx_state = 0;
+		port->sm_rx_timer_counter = 0;
+		port->sm_periodic_state = 0;
+		port->sm_periodic_timer_counter = 0;
+		port->sm_mux_state = 0;
+		port->sm_mux_timer_counter = 0;
+		port->sm_tx_state = 0;
+		port->sm_tx_timer_counter = 0;
+		port->slave = NULL;
+		port->aggregator = NULL;
+		port->next_port_in_aggregator = NULL;
+		port->transaction_id = 0;
+
+		ad_initialize_lacpdu(&(port->lacpdu));
+	}
+}
+
+/**
+ * ad_enable_collecting_distributing - enable a port's transmit/receive
+ * @port: the port we're looking at
+ *
+ * Enable @port if it's in an active aggregator
+ */
+static void ad_enable_collecting_distributing(struct port *port)
+{
+	if (port->aggregator->is_active) {
+		dprintk("Enabling port %d(LAG %d)\n", port->actor_port_number, port->aggregator->aggregator_identifier);
+		__enable_port(port);
+	}
+}
+
+/**
+ * ad_disable_collecting_distributing - disable a port's transmit/receive
+ * @port: the port we're looking at
+ *
+ */
+static void ad_disable_collecting_distributing(struct port *port)
+{
+	if (port->aggregator && MAC_ADDRESS_COMPARE(&(port->aggregator->partner_system), &(null_mac_addr))) {
+		dprintk("Disabling port %d(LAG %d)\n", port->actor_port_number, port->aggregator->aggregator_identifier);
+		__disable_port(port);
+	}
+}
+
+#if 0
+/**
+ * ad_marker_info_send - send a marker information frame
+ * @port: the port we're looking at
+ *
+ * This function does nothing since we decided not to implement send and handle
+ * response for marker PDU's, in this stage, but only to respond to marker
+ * information.
+ */
+static void ad_marker_info_send(struct port *port)
+{
+	struct marker marker;
+	u16 index;
+
+	// fill the marker PDU with the appropriate values
+	marker.subtype = 0x02;
+	marker.version_number = 0x01;
+	marker.tlv_type = AD_MARKER_INFORMATION_SUBTYPE;
+	marker.marker_length = 0x16;
+	// convert requester_port to Big Endian
+	marker.requester_port = (((port->actor_port_number & 0xFF) << 8) |((u16)(port->actor_port_number & 0xFF00) >> 8));
+	marker.requester_system = port->actor_system;
+	// convert requester_port(u32) to Big Endian
+	marker.requester_transaction_id = (((++port->transaction_id & 0xFF) << 24) |((port->transaction_id & 0xFF00) << 8) |((port->transaction_id & 0xFF0000) >> 8) |((port->transaction_id & 0xFF000000) >> 24));
+	marker.pad = 0;
+	marker.tlv_type_terminator = 0x00;
+	marker.terminator_length = 0x00;
+	for (index=0; index<90; index++) {
+		marker.reserved_90[index]=0;
+	}
+
+	// send the marker information
+	if (ad_marker_send(port, &marker) >= 0) {
+		dprintk("Sent Marker Information on port %d\n", port->actor_port_number);
+	}
+}
+#endif
+
+/**
+ * ad_marker_info_received - handle receive of a Marker information frame
+ * @marker_info: Marker info received
+ * @port: the port we're looking at
+ *
+ */
+static void ad_marker_info_received(struct marker *marker_info,struct port *port)
+{
+	struct marker marker;
+
+	// copy the received marker data to the response marker
+	//marker = *marker_info;
+	memcpy(&marker, marker_info, sizeof(struct marker));
+	// change the marker subtype to marker response
+	marker.tlv_type=AD_MARKER_RESPONSE_SUBTYPE;
+	// send the marker response
+
+	if (ad_marker_send(port, &marker) >= 0) {
+		dprintk("Sent Marker Response on port %d\n", port->actor_port_number);
+	}
+}
+
+/**
+ * ad_marker_response_received - handle receive of a marker response frame
+ * @marker: marker PDU received
+ * @port: the port we're looking at
+ *
+ * This function does nothing since we decided not to implement send and handle
+ * response for marker PDU's, in this stage, but only to respond to marker
+ * information.
+ */
+static void ad_marker_response_received(struct marker *marker, struct port *port)
+{
+	marker=NULL; // just to satisfy the compiler
+	port=NULL;  // just to satisfy the compiler
+	// DO NOTHING, SINCE WE DECIDED NOT TO IMPLEMENT THIS FEATURE FOR NOW
+}
+
+/**
+ * ad_initialize_lacpdu - initialize a given lacpdu structure
+ * @lacpdu: lacpdu structure to initialize
+ *
+ */
+static void ad_initialize_lacpdu(struct lacpdu *lacpdu)
+{
+	u16 index;
+
+	// initialize lacpdu data
+	lacpdu->subtype = 0x01;
+	lacpdu->version_number = 0x01;
+	lacpdu->tlv_type_actor_info = 0x01;
+	lacpdu->actor_information_length = 0x14;
+	// lacpdu->actor_system_priority    updated on send
+	// lacpdu->actor_system             updated on send
+	// lacpdu->actor_key                updated on send
+	// lacpdu->actor_port_priority      updated on send
+	// lacpdu->actor_port               updated on send
+	// lacpdu->actor_state              updated on send
+	lacpdu->tlv_type_partner_info = 0x02;
+	lacpdu->partner_information_length = 0x14;
+	for (index=0; index<=2; index++) {
+		lacpdu->reserved_3_1[index]=0;
+	}
+	// lacpdu->partner_system_priority  updated on send
+	// lacpdu->partner_system           updated on send
+	// lacpdu->partner_key              updated on send
+	// lacpdu->partner_port_priority    updated on send
+	// lacpdu->partner_port             updated on send
+	// lacpdu->partner_state            updated on send
+	for (index=0; index<=2; index++) {
+		lacpdu->reserved_3_2[index]=0;
+	}
+	lacpdu->tlv_type_collector_info = 0x03;
+	lacpdu->collector_information_length= 0x10;
+	lacpdu->collector_max_delay = AD_COLLECTOR_MAX_DELAY;
+	for (index=0; index<=11; index++) {
+		lacpdu->reserved_12[index]=0;
+	}
+	lacpdu->tlv_type_terminator = 0x00;
+	lacpdu->terminator_length = 0;
+	for (index=0; index<=49; index++) {
+		lacpdu->reserved_50[index]=0;
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////////////////
+// ================= AD exported functions to the main bonding code ==================
+//////////////////////////////////////////////////////////////////////////////////////
+
+// Check aggregators status in team every T seconds
+#define AD_AGGREGATOR_SELECTION_TIMER  8
+
+static u16 aggregator_identifier;
+
+/**
+ * bond_3ad_initialize - initialize a bond's 802.3ad parameters and structures
+ * @bond: bonding struct to work on
+ * @tick_resolution: tick duration (millisecond resolution)
+ * @lacp_fast: boolean. whether fast periodic should be used
+ *
+ * Can be called only after the mac address of the bond is set.
+ */
+void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution, int lacp_fast)
+{                         
+	// check that the bond is not initialized yet
+	if (MAC_ADDRESS_COMPARE(&(BOND_AD_INFO(bond).system.sys_mac_addr), &(bond->dev->dev_addr))) {
+
+		aggregator_identifier = 0;
+
+		BOND_AD_INFO(bond).lacp_fast = lacp_fast;
+		BOND_AD_INFO(bond).system.sys_priority = 0xFFFF;
+		BOND_AD_INFO(bond).system.sys_mac_addr = *((struct mac_addr *)bond->dev->dev_addr);
+
+		// initialize how many times this module is called in one second(should be about every 100ms)
+		ad_ticks_per_sec = tick_resolution;
+
+		// initialize the aggregator selection timer(to activate an aggregation selection after initialize)
+		BOND_AD_INFO(bond).agg_select_timer = (AD_AGGREGATOR_SELECTION_TIMER * ad_ticks_per_sec);
+		BOND_AD_INFO(bond).agg_select_mode = AD_BANDWIDTH;
+	}
+}
+
+/**
+ * bond_3ad_bind_slave - initialize a slave's port
+ * @slave: slave struct to work on
+ *
+ * Returns:   0 on success
+ *          < 0 on error
+ */
+int bond_3ad_bind_slave(struct slave *slave)
+{
+	struct bonding *bond = bond_get_bond_by_slave(slave);
+	struct port *port;
+	struct aggregator *aggregator;
+
+	if (bond == NULL) {
+		printk(KERN_ERR "The slave %s is not attached to its bond\n", slave->dev->name);
+		return -1;
+	}
+
+	//check that the slave has not been intialized yet.
+	if (SLAVE_AD_INFO(slave).port.slave != slave) {
+
+		// port initialization
+		port = &(SLAVE_AD_INFO(slave).port);
+
+		ad_initialize_port(port, BOND_AD_INFO(bond).lacp_fast);
+
+		port->slave = slave;
+		port->actor_port_number = SLAVE_AD_INFO(slave).id;
+		// key is determined according to the link speed, duplex and user key(which is yet not supported)
+		//              ------------------------------------------------------------
+		// Port key :   | User key                       |      Speed       |Duplex|
+		//              ------------------------------------------------------------
+		//              16                               6               1 0
+		port->actor_admin_port_key = 0;	// initialize this parameter
+		port->actor_admin_port_key |= __get_duplex(port);
+		port->actor_admin_port_key |= (__get_link_speed(port) << 1);
+		port->actor_oper_port_key = port->actor_admin_port_key;
+		// if the port is not full duplex, then the port should be not lacp Enabled
+		if (!(port->actor_oper_port_key & AD_DUPLEX_KEY_BITS)) {
+			port->sm_vars &= ~AD_PORT_LACP_ENABLED;
+		}
+		// actor system is the bond's system
+		port->actor_system = BOND_AD_INFO(bond).system.sys_mac_addr;
+		// tx timer(to verify that no more than MAX_TX_IN_SECOND lacpdu's are sent in one second)
+		port->sm_tx_timer_counter = ad_ticks_per_sec/AD_MAX_TX_IN_SECOND;
+		port->aggregator = NULL;
+		port->next_port_in_aggregator = NULL;
+
+		__disable_port(port);
+		__initialize_port_locks(port);
+
+
+		// aggregator initialization
+		aggregator = &(SLAVE_AD_INFO(slave).aggregator);
+
+		ad_initialize_agg(aggregator);
+
+		aggregator->aggregator_mac_address = *((struct mac_addr *)bond->dev->dev_addr);
+		aggregator->aggregator_identifier = (++aggregator_identifier);
+		aggregator->slave = slave;
+		aggregator->is_active = 0;
+		aggregator->num_of_ports = 0;
+	}
+
+	return 0;
+}
+
+/**
+ * bond_3ad_unbind_slave - deinitialize a slave's port
+ * @slave: slave struct to work on
+ *
+ * Search for the aggregator that is related to this port, remove the
+ * aggregator and assign another aggregator for other port related to it
+ * (if any), and remove the port.
+ */
+void bond_3ad_unbind_slave(struct slave *slave)
+{
+	struct port *port, *prev_port, *temp_port;
+	struct aggregator *aggregator, *new_aggregator, *temp_aggregator;
+	int select_new_active_agg = 0;
+	
+	// find the aggregator related to this slave
+	aggregator = &(SLAVE_AD_INFO(slave).aggregator);
+
+	// find the port related to this slave
+	port = &(SLAVE_AD_INFO(slave).port);
+
+	// if slave is null, the whole port is not initialized
+	if (!port->slave) {
+		printk(KERN_WARNING DRV_NAME ": Trying to unbind an uninitialized port on %s\n", slave->dev->name);
+		return;
+	}
+
+	dprintk("Unbinding Link Aggregation Group %d\n", aggregator->aggregator_identifier);
+
+	/* Tell the partner that this port is not suitable for aggregation */
+	port->actor_oper_port_state &= ~AD_STATE_AGGREGATION;
+	__update_lacpdu_from_port(port);
+	ad_lacpdu_send(port);
+
+	// check if this aggregator is occupied
+	if (aggregator->lag_ports) {
+		// check if there are other ports related to this aggregator except
+		// the port related to this slave(thats ensure us that there is a
+		// reason to search for new aggregator, and that we will find one
+		if ((aggregator->lag_ports != port) || (aggregator->lag_ports->next_port_in_aggregator)) {
+			// find new aggregator for the related port(s)
+			new_aggregator = __get_first_agg(port);
+			for (; new_aggregator; new_aggregator = __get_next_agg(new_aggregator)) {
+				// if the new aggregator is empty, or it connected to to our port only
+				if (!new_aggregator->lag_ports || ((new_aggregator->lag_ports == port) && !new_aggregator->lag_ports->next_port_in_aggregator)) {
+					break;
+				}
+			}
+			// if new aggregator found, copy the aggregator's parameters
+			// and connect the related lag_ports to the new aggregator
+			if ((new_aggregator) && ((!new_aggregator->lag_ports) || ((new_aggregator->lag_ports == port) && !new_aggregator->lag_ports->next_port_in_aggregator))) {
+				dprintk("Some port(s) related to LAG %d - replaceing with LAG %d\n", aggregator->aggregator_identifier, new_aggregator->aggregator_identifier);
+
+				if ((new_aggregator->lag_ports == port) && new_aggregator->is_active) {
+					printk(KERN_INFO DRV_NAME ": Removing an active aggregator\n");
+					// select new active aggregator
+					 select_new_active_agg = 1;
+				}
+
+				new_aggregator->is_individual = aggregator->is_individual;
+				new_aggregator->actor_admin_aggregator_key = aggregator->actor_admin_aggregator_key;
+				new_aggregator->actor_oper_aggregator_key = aggregator->actor_oper_aggregator_key;
+				new_aggregator->partner_system = aggregator->partner_system;
+				new_aggregator->partner_system_priority = aggregator->partner_system_priority;
+				new_aggregator->partner_oper_aggregator_key = aggregator->partner_oper_aggregator_key;
+				new_aggregator->receive_state = aggregator->receive_state;
+				new_aggregator->transmit_state = aggregator->transmit_state;
+				new_aggregator->lag_ports = aggregator->lag_ports;
+				new_aggregator->is_active = aggregator->is_active;
+				new_aggregator->num_of_ports = aggregator->num_of_ports;
+
+				// update the information that is written on the ports about the aggregator
+				for (temp_port=aggregator->lag_ports; temp_port; temp_port=temp_port->next_port_in_aggregator) {
+					temp_port->aggregator=new_aggregator;
+					temp_port->actor_port_aggregator_identifier = new_aggregator->aggregator_identifier;
+				}
+
+				// clear the aggregator
+				ad_clear_agg(aggregator);
+				
+				if (select_new_active_agg) {
+					ad_agg_selection_logic(__get_first_agg(port));
+				}
+			} else {
+				printk(KERN_WARNING DRV_NAME ": Warning: unbinding aggregator, "
+				       "and could not find a new aggregator for its ports\n");
+			}
+		} else { // in case that the only port related to this aggregator is the one we want to remove
+			select_new_active_agg = aggregator->is_active;
+			// clear the aggregator
+			ad_clear_agg(aggregator);
+			if (select_new_active_agg) {
+				printk(KERN_INFO "Removing an active aggregator\n");
+				// select new active aggregator
+				ad_agg_selection_logic(__get_first_agg(port));
+			}
+		}
+	}
+
+	dprintk("Unbinding port %d\n", port->actor_port_number);
+	// find the aggregator that this port is connected to
+	temp_aggregator = __get_first_agg(port);
+	for (; temp_aggregator; temp_aggregator = __get_next_agg(temp_aggregator)) {
+		prev_port = NULL;
+		// search the port in the aggregator's related ports
+		for (temp_port=temp_aggregator->lag_ports; temp_port; prev_port=temp_port, temp_port=temp_port->next_port_in_aggregator) {
+			if (temp_port == port) { // the aggregator found - detach the port from this aggregator
+				if (prev_port) {
+					prev_port->next_port_in_aggregator = temp_port->next_port_in_aggregator;
+				} else {
+					temp_aggregator->lag_ports = temp_port->next_port_in_aggregator;
+				}
+				temp_aggregator->num_of_ports--;
+				if (temp_aggregator->num_of_ports==0) {
+					select_new_active_agg = temp_aggregator->is_active;
+					// clear the aggregator
+					ad_clear_agg(temp_aggregator);
+					if (select_new_active_agg) {
+						printk(KERN_INFO "Removing an active aggregator\n");
+						// select new active aggregator
+						ad_agg_selection_logic(__get_first_agg(port));
+					}
+				}
+				break;
+			}
+		}
+	}
+	port->slave=NULL;	
+}
+
+/**
+ * bond_3ad_state_machine_handler - handle state machines timeout
+ * @bond: bonding struct to work on
+ *
+ * The state machine handling concept in this module is to check every tick
+ * which state machine should operate any function. The execution order is
+ * round robin, so when we have an interaction between state machines, the
+ * reply of one to each other might be delayed until next tick.
+ *
+ * This function also complete the initialization when the agg_select_timer
+ * times out, and it selects an aggregator for the ports that are yet not
+ * related to any aggregator, and selects the active aggregator for a bond.
+ */
+void bond_3ad_state_machine_handler(struct bonding *bond)
+{
+	struct port *port;
+	struct aggregator *aggregator;
+
+	read_lock(&bond->lock);
+
+	if (bond->kill_timers) {
+		goto out;
+	}
+
+	//check if there are any slaves
+	if (bond->slave_cnt == 0) {
+		goto re_arm;
+	}
+
+	// check if agg_select_timer timer after initialize is timed out
+	if (BOND_AD_INFO(bond).agg_select_timer && !(--BOND_AD_INFO(bond).agg_select_timer)) {
+		// select the active aggregator for the bond
+		if ((port = __get_first_port(bond))) {
+			if (!port->slave) {
+				printk(KERN_WARNING DRV_NAME ": Warning: bond's first port is uninitialized\n");
+				goto re_arm;
+			}
+
+			aggregator = __get_first_agg(port);
+			ad_agg_selection_logic(aggregator);
+		}
+	}
+
+	// for each port run the state machines
+	for (port = __get_first_port(bond); port; port = __get_next_port(port)) {
+		if (!port->slave) {
+			printk(KERN_WARNING DRV_NAME ": Warning: Found an uninitialized port\n");
+			goto re_arm;
+		}
+
+		ad_rx_machine(NULL, port);
+		ad_periodic_machine(port);
+		ad_port_selection_logic(port);
+		ad_mux_machine(port);
+		ad_tx_machine(port);
+
+		// turn off the BEGIN bit, since we already handled it
+		if (port->sm_vars & AD_PORT_BEGIN) {
+			port->sm_vars &= ~AD_PORT_BEGIN;
+		}
+	}
+
+re_arm:
+	mod_timer(&(BOND_AD_INFO(bond).ad_timer), jiffies + ad_delta_in_ticks);
+out:
+	read_unlock(&bond->lock);
+}
+
+/**
+ * bond_3ad_rx_indication - handle a received frame
+ * @lacpdu: received lacpdu
+ * @slave: slave struct to work on
+ * @length: length of the data received
+ *
+ * It is assumed that frames that were sent on this NIC don't returned as new
+ * received frames (loopback). Since only the payload is given to this
+ * function, it check for loopback.
+ */
+static void bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u16 length)
+{
+	struct port *port;
+
+	if (length >= sizeof(struct lacpdu)) {
+
+		port = &(SLAVE_AD_INFO(slave).port);
+
+		if (!port->slave) {
+			printk(KERN_WARNING DRV_NAME ": Warning: port of slave %s is uninitialized\n", slave->dev->name);
+			return;
+		}
+
+		switch (lacpdu->subtype) {
+		case AD_TYPE_LACPDU:
+			__ntohs_lacpdu(lacpdu);
+			dprintk("Received LACPDU on port %d\n", port->actor_port_number);
+			ad_rx_machine(lacpdu, port);
+			break;
+
+		case AD_TYPE_MARKER:
+			// No need to convert fields to Little Endian since we don't use the marker's fields.
+
+			switch (((struct marker *)lacpdu)->tlv_type) {
+			case AD_MARKER_INFORMATION_SUBTYPE:
+				dprintk("Received Marker Information on port %d\n", port->actor_port_number);
+				ad_marker_info_received((struct marker *)lacpdu, port);
+				break;
+
+			case AD_MARKER_RESPONSE_SUBTYPE:
+				dprintk("Received Marker Response on port %d\n", port->actor_port_number);
+				ad_marker_response_received((struct marker *)lacpdu, port);
+				break;
+
+			default:
+				dprintk("Received an unknown Marker subtype on slot %d\n", port->actor_port_number);
+			}
+		}
+	}
+}
+
+/**
+ * bond_3ad_adapter_speed_changed - handle a slave's speed change indication
+ * @slave: slave struct to work on
+ *
+ * Handle reselection of aggregator (if needed) for this port.
+ */
+void bond_3ad_adapter_speed_changed(struct slave *slave)
+{
+	struct port *port;
+
+	port = &(SLAVE_AD_INFO(slave).port);
+
+	// if slave is null, the whole port is not initialized
+	if (!port->slave) {
+		printk(KERN_WARNING DRV_NAME ": Warning: speed changed for uninitialized port on %s\n",
+		       slave->dev->name);
+		return;
+	}
+
+	port->actor_admin_port_key &= ~AD_SPEED_KEY_BITS;
+	port->actor_oper_port_key=port->actor_admin_port_key |= (__get_link_speed(port) << 1);
+	dprintk("Port %d changed speed\n", port->actor_port_number);
+	// there is no need to reselect a new aggregator, just signal the
+	// state machines to reinitialize
+	port->sm_vars |= AD_PORT_BEGIN;
+}
+
+/**
+ * bond_3ad_adapter_duplex_changed - handle a slave's duplex change indication
+ * @slave: slave struct to work on
+ *
+ * Handle reselection of aggregator (if needed) for this port.
+ */
+void bond_3ad_adapter_duplex_changed(struct slave *slave)
+{
+	struct port *port;
+
+	port=&(SLAVE_AD_INFO(slave).port);
+
+	// if slave is null, the whole port is not initialized
+	if (!port->slave) {
+		printk(KERN_WARNING DRV_NAME ": Warning: duplex changed for uninitialized port on %s\n",
+		       slave->dev->name);
+		return;
+	}
+
+	port->actor_admin_port_key &= ~AD_DUPLEX_KEY_BITS;
+	port->actor_oper_port_key=port->actor_admin_port_key |= __get_duplex(port);
+	dprintk("Port %d changed duplex\n", port->actor_port_number);
+	// there is no need to reselect a new aggregator, just signal the
+	// state machines to reinitialize
+	port->sm_vars |= AD_PORT_BEGIN;
+}
+
+/**
+ * bond_3ad_handle_link_change - handle a slave's link status change indication
+ * @slave: slave struct to work on
+ * @status: whether the link is now up or down
+ *
+ * Handle reselection of aggregator (if needed) for this port.
+ */
+void bond_3ad_handle_link_change(struct slave *slave, char link)
+{
+	struct port *port;
+
+	port = &(SLAVE_AD_INFO(slave).port);
+
+	// if slave is null, the whole port is not initialized
+	if (!port->slave) {
+		printk(KERN_WARNING DRV_NAME ": Warning: link status changed for uninitialized port on %s\n",
+			slave->dev->name);
+		return;
+	}
+
+	// on link down we are zeroing duplex and speed since some of the adaptors(ce1000.lan) report full duplex/speed instead of N/A(duplex) / 0(speed)
+	// on link up we are forcing recheck on the duplex and speed since some of he adaptors(ce1000.lan) report
+	if (link == BOND_LINK_UP) {
+		port->is_enabled = 1;
+		port->actor_admin_port_key &= ~AD_DUPLEX_KEY_BITS;
+		port->actor_oper_port_key=port->actor_admin_port_key |= __get_duplex(port);
+		port->actor_admin_port_key &= ~AD_SPEED_KEY_BITS;
+		port->actor_oper_port_key=port->actor_admin_port_key |= (__get_link_speed(port) << 1);
+	} else {
+		/* link has failed */
+		port->is_enabled = 0;
+		port->actor_admin_port_key &= ~AD_DUPLEX_KEY_BITS;
+		port->actor_oper_port_key= (port->actor_admin_port_key &= ~AD_SPEED_KEY_BITS);
+	}
+	//BOND_PRINT_DBG(("Port %d changed link status to %s", port->actor_port_number, ((link == BOND_LINK_UP)?"UP":"DOWN")));
+	// there is no need to reselect a new aggregator, just signal the
+	// state machines to reinitialize
+	port->sm_vars |= AD_PORT_BEGIN;
+}
+
+/**
+ * bond_3ad_get_active_agg_info - get information of the active aggregator
+ * @bond: bonding struct to work on
+ * @ad_info: ad_info struct to fill with the bond's info
+ *
+ * Returns:   0 on success
+ *          < 0 on error
+ */
+int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info)
+{
+	struct aggregator *aggregator = NULL;
+	struct port *port;
+
+	for (port = __get_first_port(bond); port; port = __get_next_port(port)) {
+		if (port->aggregator && port->aggregator->is_active) {
+			aggregator = port->aggregator;
+			break;
+		}
+	}
+
+	if (aggregator) {
+		ad_info->aggregator_id = aggregator->aggregator_identifier;
+		ad_info->ports = aggregator->num_of_ports;
+		ad_info->actor_key = aggregator->actor_oper_aggregator_key;
+		ad_info->partner_key = aggregator->partner_oper_aggregator_key;
+		memcpy(ad_info->partner_system, aggregator->partner_system.mac_addr_value, ETH_ALEN);
+		return 0;
+	}
+
+	return -1;
+}
+
+int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev)
+{
+	struct slave *slave, *start_at;
+	struct bonding *bond = dev->priv;
+	struct ethhdr *data = (struct ethhdr *)skb->data;
+	int slave_agg_no;
+	int slaves_in_agg;
+	int agg_id;
+	int i;
+	struct ad_info ad_info;
+	int res = 1;
+
+	/* make sure that the slaves list will
+	 * not change during tx
+	 */
+	read_lock(&bond->lock);
+
+	if (!BOND_IS_OK(bond)) {
+		goto out;
+	}
+
+	if (bond_3ad_get_active_agg_info(bond, &ad_info)) {
+		printk(KERN_DEBUG "ERROR: bond_3ad_get_active_agg_info failed\n");
+		goto out;
+	}
+
+	slaves_in_agg = ad_info.ports;
+	agg_id = ad_info.aggregator_id;
+
+	if (slaves_in_agg == 0) {
+		/*the aggregator is empty*/
+		printk(KERN_DEBUG "ERROR: active aggregator is empty\n");
+		goto out;
+	}
+
+	slave_agg_no = (data->h_dest[5]^bond->dev->dev_addr[5]) % slaves_in_agg;
+
+	bond_for_each_slave(bond, slave, i) {
+		struct aggregator *agg = SLAVE_AD_INFO(slave).port.aggregator;
+
+		if (agg && (agg->aggregator_identifier == agg_id)) {
+			slave_agg_no--;
+			if (slave_agg_no < 0) {
+				break;
+			}
+		}
+	}
+
+	if (slave_agg_no >= 0) {
+		printk(KERN_ERR DRV_NAME ": Error: Couldn't find a slave to tx on for aggregator ID %d\n", agg_id);
+		goto out;
+	}
+
+	start_at = slave;
+
+	bond_for_each_slave_from(bond, slave, i, start_at) {
+		int slave_agg_id = 0;
+		struct aggregator *agg = SLAVE_AD_INFO(slave).port.aggregator;
+
+		if (agg) {
+			slave_agg_id = agg->aggregator_identifier;
+		}
+
+		if (SLAVE_IS_OK(slave) && agg && (slave_agg_id == agg_id)) {
+			res = bond_dev_queue_xmit(bond, skb, slave->dev);
+			break;
+		}
+	}
+
+out:
+	if (res) {
+		/* no suitable interface, frame not sent */
+		dev_kfree_skb(skb);
+	}
+	read_unlock(&bond->lock);
+	return 0;
+}
+
+int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type* ptype)
+{
+	struct bonding *bond = dev->priv;
+	struct slave *slave = NULL;
+	int ret = NET_RX_DROP;
+
+	if (!(dev->flags & IFF_MASTER)) {
+		goto out;
+	}
+
+	read_lock(&bond->lock);
+	slave = bond_get_slave_by_dev((struct bonding *)dev->priv,
+				      skb->real_dev);
+	if (slave == NULL) {
+		goto out_unlock;
+	}
+
+	bond_3ad_rx_indication((struct lacpdu *) skb->data, slave, skb->len);
+
+	ret = NET_RX_SUCCESS;
+
+out_unlock:
+	read_unlock(&bond->lock);
+out:
+	dev_kfree_skb(skb);
+
+	return ret;
+}
+
diff --git a/drivers/net/bonding/bond_3ad.h b/drivers/net/bonding/bond_3ad.h
new file mode 100644
index 0000000..f468238
--- /dev/null
+++ b/drivers/net/bonding/bond_3ad.h
@@ -0,0 +1,300 @@
+/*
+ * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ *
+ * Changes:
+ *
+ * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Amir Noam <amir.noam at intel dot com>
+ *	- Added support for lacp_rate module param.
+ *
+ * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Renamed bond_3ad_link_status_changed() to
+ *	  bond_3ad_handle_link_change() for compatibility with TLB.
+ *
+ * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Code cleanup and style changes
+ */
+
+#ifndef __BOND_3AD_H__
+#define __BOND_3AD_H__
+
+#include <asm/byteorder.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+
+// General definitions
+#define BOND_ETH_P_LACPDU       0x8809
+#define PKT_TYPE_LACPDU         __constant_htons(BOND_ETH_P_LACPDU)
+#define AD_TIMER_INTERVAL       100 /*msec*/
+
+#define MULTICAST_LACPDU_ADDR    {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
+#define AD_MULTICAST_LACPDU_ADDR    {MULTICAST_LACPDU_ADDR}
+
+#define AD_LACP_SLOW 0
+#define AD_LACP_FAST 1
+
+typedef struct mac_addr {
+	u8 mac_addr_value[ETH_ALEN];
+} mac_addr_t;
+
+typedef enum {
+	AD_BANDWIDTH = 0,
+	AD_COUNT
+} agg_selection_t;
+
+// rx machine states(43.4.11 in the 802.3ad standard)
+typedef enum {
+	AD_RX_DUMMY,
+	AD_RX_INITIALIZE,     // rx Machine
+	AD_RX_PORT_DISABLED,  // rx Machine
+	AD_RX_LACP_DISABLED,  // rx Machine
+	AD_RX_EXPIRED,	      // rx Machine
+	AD_RX_DEFAULTED,      // rx Machine
+	AD_RX_CURRENT	      // rx Machine
+} rx_states_t;
+
+// periodic machine states(43.4.12 in the 802.3ad standard)
+typedef enum {
+	AD_PERIODIC_DUMMY,
+	AD_NO_PERIODIC,	       // periodic machine
+	AD_FAST_PERIODIC,      // periodic machine
+	AD_SLOW_PERIODIC,      // periodic machine
+	AD_PERIODIC_TX	   // periodic machine
+} periodic_states_t;
+
+// mux machine states(43.4.13 in the 802.3ad standard)
+typedef enum {
+	AD_MUX_DUMMY,
+	AD_MUX_DETACHED,       // mux machine
+	AD_MUX_WAITING,	       // mux machine
+	AD_MUX_ATTACHED,       // mux machine
+	AD_MUX_COLLECTING_DISTRIBUTING // mux machine
+} mux_states_t;
+
+// tx machine states(43.4.15 in the 802.3ad standard)
+typedef enum {
+	AD_TX_DUMMY,
+	AD_TRANSMIT	   // tx Machine
+} tx_states_t;
+
+// rx indication types
+typedef enum {
+	AD_TYPE_LACPDU = 1,    // type lacpdu
+	AD_TYPE_MARKER	   // type marker
+} pdu_type_t;
+
+// rx marker indication types
+typedef enum {
+	AD_MARKER_INFORMATION_SUBTYPE = 1, // marker imformation subtype
+	AD_MARKER_RESPONSE_SUBTYPE     // marker response subtype
+} marker_subtype_t;
+
+// timers types(43.4.9 in the 802.3ad standard)
+typedef enum {
+	AD_CURRENT_WHILE_TIMER,
+	AD_ACTOR_CHURN_TIMER,
+	AD_PERIODIC_TIMER,
+	AD_PARTNER_CHURN_TIMER,
+	AD_WAIT_WHILE_TIMER
+} ad_timers_t;
+
+#pragma pack(1)
+
+typedef struct ad_header {
+	struct mac_addr destination_address;
+	struct mac_addr source_address;
+	u16 length_type;
+} ad_header_t;
+
+// Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard)
+typedef struct lacpdu {
+	u8 subtype;		     // = LACP(= 0x01)
+	u8 version_number;
+	u8 tlv_type_actor_info;	      // = actor information(type/length/value)
+	u8 actor_information_length; // = 20
+	u16 actor_system_priority;
+	struct mac_addr actor_system;
+	u16 actor_key;
+	u16 actor_port_priority;
+	u16 actor_port;
+	u8 actor_state;
+	u8 reserved_3_1[3];	     // = 0
+	u8 tlv_type_partner_info;     // = partner information
+	u8 partner_information_length;	 // = 20
+	u16 partner_system_priority;
+	struct mac_addr partner_system;
+	u16 partner_key;
+	u16 partner_port_priority;
+	u16 partner_port;
+	u8 partner_state;
+	u8 reserved_3_2[3];	     // = 0
+	u8 tlv_type_collector_info;	  // = collector information
+	u8 collector_information_length; // = 16
+	u16 collector_max_delay;
+	u8 reserved_12[12];
+	u8 tlv_type_terminator;	     // = terminator
+	u8 terminator_length;	     // = 0
+	u8 reserved_50[50];	     // = 0
+} lacpdu_t;
+
+typedef struct lacpdu_header {
+	struct ad_header ad_header;
+	struct lacpdu lacpdu;
+} lacpdu_header_t;
+
+// Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard)
+typedef struct marker {
+	u8 subtype;		 //  = 0x02  (marker PDU)
+	u8 version_number;	 //  = 0x01
+	u8 tlv_type;		 //  = 0x01  (marker information)
+	//  = 0x02  (marker response information)
+	u8 marker_length;	 //  = 0x16
+	u16 requester_port;	 //   The number assigned to the port by the requester
+	struct mac_addr requester_system;      //   The requester's system id
+	u32 requester_transaction_id;	//   The transaction id allocated by the requester,
+	u16 pad;		 //  = 0
+	u8 tlv_type_terminator;	     //  = 0x00
+	u8 terminator_length;	     //  = 0x00
+	u8 reserved_90[90];	     //  = 0
+} marker_t;
+
+typedef struct marker_header {
+	struct ad_header ad_header;
+	struct marker marker;
+} marker_header_t;
+
+#pragma pack()
+
+struct slave;
+struct bonding;
+struct ad_info;
+struct port;
+
+#ifdef __ia64__
+#pragma pack(8)
+#endif
+
+// aggregator structure(43.4.5 in the 802.3ad standard)
+typedef struct aggregator {
+	struct mac_addr aggregator_mac_address;
+	u16 aggregator_identifier;
+	u16 is_individual;		 // BOOLEAN
+	u16 actor_admin_aggregator_key;
+	u16 actor_oper_aggregator_key;
+	struct mac_addr partner_system;
+	u16 partner_system_priority;
+	u16 partner_oper_aggregator_key;
+	u16 receive_state;		// BOOLEAN
+	u16 transmit_state;		// BOOLEAN
+	struct port *lag_ports;
+	// ****** PRIVATE PARAMETERS ******
+	struct slave *slave;	    // pointer to the bond slave that this aggregator belongs to
+	u16 is_active;	    // BOOLEAN. Indicates if this aggregator is active
+	u16 num_of_ports;
+} aggregator_t;
+
+// port structure(43.4.6 in the 802.3ad standard)
+typedef struct port {
+	u16 actor_port_number;
+	u16 actor_port_priority;
+	struct mac_addr actor_system;	       // This parameter is added here although it is not specified in the standard, just for simplification
+	u16 actor_system_priority;	 // This parameter is added here although it is not specified in the standard, just for simplification
+	u16 actor_port_aggregator_identifier;
+	u16 ntt;			 // BOOLEAN
+	u16 actor_admin_port_key;
+	u16 actor_oper_port_key;
+	u8 actor_admin_port_state;
+	u8 actor_oper_port_state;
+	struct mac_addr partner_admin_system;
+	struct mac_addr partner_oper_system;
+	u16 partner_admin_system_priority;
+	u16 partner_oper_system_priority;
+	u16 partner_admin_key;
+	u16 partner_oper_key;
+	u16 partner_admin_port_number;
+	u16 partner_oper_port_number;
+	u16 partner_admin_port_priority;
+	u16 partner_oper_port_priority;
+	u8 partner_admin_port_state;
+	u8 partner_oper_port_state;
+	u16 is_enabled;	      // BOOLEAN
+	// ****** PRIVATE PARAMETERS ******
+	u16 sm_vars;	      // all state machines variables for this port
+	rx_states_t sm_rx_state;	// state machine rx state
+	u16 sm_rx_timer_counter;    // state machine rx timer counter
+	periodic_states_t sm_periodic_state;// state machine periodic state
+	u16 sm_periodic_timer_counter;	// state machine periodic timer counter
+	mux_states_t sm_mux_state;	// state machine mux state
+	u16 sm_mux_timer_counter;   // state machine mux timer counter
+	tx_states_t sm_tx_state;	// state machine tx state
+	u16 sm_tx_timer_counter;    // state machine tx timer counter(allways on - enter to transmit state 3 time per second)
+	struct slave *slave;	    // pointer to the bond slave that this port belongs to
+	struct aggregator *aggregator;	   // pointer to an aggregator that this port related to
+	struct port *next_port_in_aggregator; // Next port on the linked list of the parent aggregator
+	u32 transaction_id;	    // continuous number for identification of Marker PDU's;
+	struct lacpdu lacpdu;	       // the lacpdu that will be sent for this port
+} port_t;
+
+// system structure
+typedef struct ad_system {
+	u16 sys_priority;
+	struct mac_addr sys_mac_addr;
+} ad_system_t;
+
+#ifdef __ia64__
+#pragma pack()
+#endif
+
+// ================= AD Exported structures to the main bonding code ==================
+#define BOND_AD_INFO(bond)   ((bond)->ad_info)
+#define SLAVE_AD_INFO(slave) ((slave)->ad_info)
+
+struct ad_bond_info {
+	ad_system_t system;	    // 802.3ad system structure
+	u32 agg_select_timer;	    // Timer to select aggregator after all adapter's hand shakes
+	u32 agg_select_mode;	    // Mode of selection of active aggregator(bandwidth/count)
+	int lacp_fast;		/* whether fast periodic tx should be
+				 * requested
+				 */
+	struct timer_list ad_timer;
+	struct packet_type ad_pkt_type;
+};
+
+struct ad_slave_info {
+	struct aggregator aggregator;	    // 802.3ad aggregator structure
+	struct port port;		    // 802.3ad port structure
+	spinlock_t rx_machine_lock; // To avoid race condition between callback and receive interrupt
+	u16 id;
+};
+
+// ================= AD Exported functions to the main bonding code ==================
+void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution, int lacp_fast);
+int  bond_3ad_bind_slave(struct slave *slave);
+void bond_3ad_unbind_slave(struct slave *slave);
+void bond_3ad_state_machine_handler(struct bonding *bond);
+void bond_3ad_adapter_speed_changed(struct slave *slave);
+void bond_3ad_adapter_duplex_changed(struct slave *slave);
+void bond_3ad_handle_link_change(struct slave *slave, char link);
+int  bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
+int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev);
+int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type* ptype);
+#endif //__BOND_3AD_H__
+
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
new file mode 100644
index 0000000..5ce606d
--- /dev/null
+++ b/drivers/net/bonding/bond_alb.c
@@ -0,0 +1,1696 @@
+/*
+ * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ *
+ * Changes:
+ *
+ * 2003/06/25 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Fixed signed/unsigned calculation errors that caused load sharing
+ *	  to collapse to one slave under very heavy UDP Tx stress.
+ *
+ * 2003/08/06 - Amir Noam <amir.noam at intel dot com>
+ *	- Add support for setting bond's MAC address with special
+ *	  handling required for ALB/TLB.
+ *
+ * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Code cleanup and style changes
+ *
+ * 2003/12/30 - Amir Noam <amir.noam at intel dot com>
+ *	- Fixed: Cannot remove and re-enslave the original active slave.
+ *
+ * 2004/01/14 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Add capability to tag self generated packets in ALB/TLB modes.
+ */
+
+//#define BONDING_DEBUG 1
+
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/pkt_sched.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/if_bonding.h>
+#include <linux/if_vlan.h>
+#include <linux/in.h>
+#include <net/ipx.h>
+#include <net/arp.h>
+#include <asm/byteorder.h>
+#include "bonding.h"
+#include "bond_alb.h"
+
+
+#define ALB_TIMER_TICKS_PER_SEC	    10	/* should be a divisor of HZ */
+#define BOND_TLB_REBALANCE_INTERVAL 10	/* In seconds, periodic re-balancing.
+					 * Used for division - never set
+					 * to zero !!!
+					 */
+#define BOND_ALB_LP_INTERVAL	    1	/* In seconds, periodic send of
+					 * learning packets to the switch
+					 */
+
+#define BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \
+				  * ALB_TIMER_TICKS_PER_SEC)
+
+#define BOND_ALB_LP_TICKS (BOND_ALB_LP_INTERVAL \
+			   * ALB_TIMER_TICKS_PER_SEC)
+
+#define TLB_HASH_TABLE_SIZE 256	/* The size of the clients hash table.
+				 * Note that this value MUST NOT be smaller
+				 * because the key hash table is BYTE wide !
+				 */
+
+
+#define TLB_NULL_INDEX		0xffffffff
+#define MAX_LP_BURST		3
+
+/* rlb defs */
+#define RLB_HASH_TABLE_SIZE	256
+#define RLB_NULL_INDEX		0xffffffff
+#define RLB_UPDATE_DELAY	2*ALB_TIMER_TICKS_PER_SEC /* 2 seconds */
+#define RLB_ARP_BURST_SIZE	2
+#define RLB_UPDATE_RETRY	3	/* 3-ticks - must be smaller than the rlb
+					 * rebalance interval (5 min).
+					 */
+/* RLB_PROMISC_TIMEOUT = 10 sec equals the time that the current slave is
+ * promiscuous after failover
+ */
+#define RLB_PROMISC_TIMEOUT	10*ALB_TIMER_TICKS_PER_SEC
+
+static const u8 mac_bcast[ETH_ALEN] = {0xff,0xff,0xff,0xff,0xff,0xff};
+static const int alb_delta_in_ticks = HZ / ALB_TIMER_TICKS_PER_SEC;
+
+#pragma pack(1)
+struct learning_pkt {
+	u8 mac_dst[ETH_ALEN];
+	u8 mac_src[ETH_ALEN];
+	u16 type;
+	u8 padding[ETH_ZLEN - ETH_HLEN];
+};
+
+struct arp_pkt {
+	u16     hw_addr_space;
+	u16     prot_addr_space;
+	u8      hw_addr_len;
+	u8      prot_addr_len;
+	u16     op_code;
+	u8      mac_src[ETH_ALEN];	/* sender hardware address */
+	u32     ip_src;			/* sender IP address */
+	u8      mac_dst[ETH_ALEN];	/* target hardware address */
+	u32     ip_dst;			/* target IP address */
+};
+#pragma pack()
+
+/* Forward declaration */
+static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]);
+
+static inline u8 _simple_hash(u8 *hash_start, int hash_size)
+{
+	int i;
+	u8 hash = 0;
+
+	for (i = 0; i < hash_size; i++) {
+		hash ^= hash_start[i];
+	}
+
+	return hash;
+}
+
+/*********************** tlb specific functions ***************************/
+
+static inline void _lock_tx_hashtbl(struct bonding *bond)
+{
+	spin_lock(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
+}
+
+static inline void _unlock_tx_hashtbl(struct bonding *bond)
+{
+	spin_unlock(&(BOND_ALB_INFO(bond).tx_hashtbl_lock));
+}
+
+/* Caller must hold tx_hashtbl lock */
+static inline void tlb_init_table_entry(struct tlb_client_info *entry, int save_load)
+{
+	if (save_load) {
+		entry->load_history = 1 + entry->tx_bytes /
+				      BOND_TLB_REBALANCE_INTERVAL;
+		entry->tx_bytes = 0;
+	}
+
+	entry->tx_slave = NULL;
+	entry->next = TLB_NULL_INDEX;
+	entry->prev = TLB_NULL_INDEX;
+}
+
+static inline void tlb_init_slave(struct slave *slave)
+{
+	SLAVE_TLB_INFO(slave).load = 0;
+	SLAVE_TLB_INFO(slave).head = TLB_NULL_INDEX;
+}
+
+/* Caller must hold bond lock for read */
+static void tlb_clear_slave(struct bonding *bond, struct slave *slave, int save_load)
+{
+	struct tlb_client_info *tx_hash_table;
+	u32 index;
+
+	_lock_tx_hashtbl(bond);
+
+	/* clear slave from tx_hashtbl */
+	tx_hash_table = BOND_ALB_INFO(bond).tx_hashtbl;
+
+	index = SLAVE_TLB_INFO(slave).head;
+	while (index != TLB_NULL_INDEX) {
+		u32 next_index = tx_hash_table[index].next;
+		tlb_init_table_entry(&tx_hash_table[index], save_load);
+		index = next_index;
+	}
+
+	_unlock_tx_hashtbl(bond);
+
+	tlb_init_slave(slave);
+}
+
+/* Must be called before starting the monitor timer */
+static int tlb_initialize(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	int size = TLB_HASH_TABLE_SIZE * sizeof(struct tlb_client_info);
+	int i;
+
+	spin_lock_init(&(bond_info->tx_hashtbl_lock));
+
+	_lock_tx_hashtbl(bond);
+
+	bond_info->tx_hashtbl = kmalloc(size, GFP_KERNEL);
+	if (!bond_info->tx_hashtbl) {
+		printk(KERN_ERR DRV_NAME
+		       ": Error: %s: Failed to allocate TLB hash table\n",
+		       bond->dev->name);
+		_unlock_tx_hashtbl(bond);
+		return -1;
+	}
+
+	memset(bond_info->tx_hashtbl, 0, size);
+
+	for (i = 0; i < TLB_HASH_TABLE_SIZE; i++) {
+		tlb_init_table_entry(&bond_info->tx_hashtbl[i], 1);
+	}
+
+	_unlock_tx_hashtbl(bond);
+
+	return 0;
+}
+
+/* Must be called only after all slaves have been released */
+static void tlb_deinitialize(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+
+	_lock_tx_hashtbl(bond);
+
+	kfree(bond_info->tx_hashtbl);
+	bond_info->tx_hashtbl = NULL;
+
+	_unlock_tx_hashtbl(bond);
+}
+
+/* Caller must hold bond lock for read */
+static struct slave *tlb_get_least_loaded_slave(struct bonding *bond)
+{
+	struct slave *slave, *least_loaded;
+	s64 max_gap;
+	int i, found = 0;
+
+	/* Find the first enabled slave */
+	bond_for_each_slave(bond, slave, i) {
+		if (SLAVE_IS_OK(slave)) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found) {
+		return NULL;
+	}
+
+	least_loaded = slave;
+	max_gap = (s64)(slave->speed << 20) - /* Convert to Megabit per sec */
+			(s64)(SLAVE_TLB_INFO(slave).load << 3); /* Bytes to bits */
+
+	/* Find the slave with the largest gap */
+	bond_for_each_slave_from(bond, slave, i, least_loaded) {
+		if (SLAVE_IS_OK(slave)) {
+			s64 gap = (s64)(slave->speed << 20) -
+					(s64)(SLAVE_TLB_INFO(slave).load << 3);
+			if (max_gap < gap) {
+				least_loaded = slave;
+				max_gap = gap;
+			}
+		}
+	}
+
+	return least_loaded;
+}
+
+/* Caller must hold bond lock for read */
+static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index, u32 skb_len)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct tlb_client_info *hash_table;
+	struct slave *assigned_slave;
+
+	_lock_tx_hashtbl(bond);
+
+	hash_table = bond_info->tx_hashtbl;
+	assigned_slave = hash_table[hash_index].tx_slave;
+	if (!assigned_slave) {
+		assigned_slave = tlb_get_least_loaded_slave(bond);
+
+		if (assigned_slave) {
+			struct tlb_slave_info *slave_info =
+				&(SLAVE_TLB_INFO(assigned_slave));
+			u32 next_index = slave_info->head;
+
+			hash_table[hash_index].tx_slave = assigned_slave;
+			hash_table[hash_index].next = next_index;
+			hash_table[hash_index].prev = TLB_NULL_INDEX;
+
+			if (next_index != TLB_NULL_INDEX) {
+				hash_table[next_index].prev = hash_index;
+			}
+
+			slave_info->head = hash_index;
+			slave_info->load +=
+				hash_table[hash_index].load_history;
+		}
+	}
+
+	if (assigned_slave) {
+		hash_table[hash_index].tx_bytes += skb_len;
+	}
+
+	_unlock_tx_hashtbl(bond);
+
+	return assigned_slave;
+}
+
+/*********************** rlb specific functions ***************************/
+static inline void _lock_rx_hashtbl(struct bonding *bond)
+{
+	spin_lock(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
+}
+
+static inline void _unlock_rx_hashtbl(struct bonding *bond)
+{
+	spin_unlock(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
+}
+
+/* when an ARP REPLY is received from a client update its info
+ * in the rx_hashtbl
+ */
+static void rlb_update_entry_from_arp(struct bonding *bond, struct arp_pkt *arp)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct rlb_client_info *client_info;
+	u32 hash_index;
+
+	_lock_rx_hashtbl(bond);
+
+	hash_index = _simple_hash((u8*)&(arp->ip_src), sizeof(arp->ip_src));
+	client_info = &(bond_info->rx_hashtbl[hash_index]);
+
+	if ((client_info->assigned) &&
+	    (client_info->ip_src == arp->ip_dst) &&
+	    (client_info->ip_dst == arp->ip_src)) {
+		/* update the clients MAC address */
+		memcpy(client_info->mac_dst, arp->mac_src, ETH_ALEN);
+		client_info->ntt = 1;
+		bond_info->rx_ntt = 1;
+	}
+
+	_unlock_rx_hashtbl(bond);
+}
+
+static int rlb_arp_recv(struct sk_buff *skb, struct net_device *bond_dev, struct packet_type *ptype)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct arp_pkt *arp = (struct arp_pkt *)skb->data;
+	int res = NET_RX_DROP;
+
+	if (!(bond_dev->flags & IFF_MASTER)) {
+		goto out;
+	}
+
+	if (!arp) {
+		dprintk("Packet has no ARP data\n");
+		goto out;
+	}
+
+	if (skb->len < sizeof(struct arp_pkt)) {
+		dprintk("Packet is too small to be an ARP\n");
+		goto out;
+	}
+
+	if (arp->op_code == htons(ARPOP_REPLY)) {
+		/* update rx hash table for this ARP */
+		rlb_update_entry_from_arp(bond, arp);
+		dprintk("Server received an ARP Reply from client\n");
+	}
+
+	res = NET_RX_SUCCESS;
+
+out:
+	dev_kfree_skb(skb);
+
+	return res;
+}
+
+/* Caller must hold bond lock for read */
+static struct slave *rlb_next_rx_slave(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct slave *rx_slave, *slave, *start_at;
+	int i = 0;
+
+	if (bond_info->next_rx_slave) {
+		start_at = bond_info->next_rx_slave;
+	} else {
+		start_at = bond->first_slave;
+	}
+
+	rx_slave = NULL;
+
+	bond_for_each_slave_from(bond, slave, i, start_at) {
+		if (SLAVE_IS_OK(slave)) {
+			if (!rx_slave) {
+				rx_slave = slave;
+			} else if (slave->speed > rx_slave->speed) {
+				rx_slave = slave;
+			}
+		}
+	}
+
+	if (rx_slave) {
+		bond_info->next_rx_slave = rx_slave->next;
+	}
+
+	return rx_slave;
+}
+
+/* teach the switch the mac of a disabled slave
+ * on the primary for fault tolerance
+ *
+ * Caller must hold bond->curr_slave_lock for write or bond lock for write
+ */
+static void rlb_teach_disabled_mac_on_primary(struct bonding *bond, u8 addr[])
+{
+	if (!bond->curr_active_slave) {
+		return;
+	}
+
+	if (!bond->alb_info.primary_is_promisc) {
+		bond->alb_info.primary_is_promisc = 1;
+		dev_set_promiscuity(bond->curr_active_slave->dev, 1);
+	}
+
+	bond->alb_info.rlb_promisc_timeout_counter = 0;
+
+	alb_send_learning_packets(bond->curr_active_slave, addr);
+}
+
+/* slave being removed should not be active at this point
+ *
+ * Caller must hold bond lock for read
+ */
+static void rlb_clear_slave(struct bonding *bond, struct slave *slave)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct rlb_client_info *rx_hash_table;
+	u32 index, next_index;
+
+	/* clear slave from rx_hashtbl */
+	_lock_rx_hashtbl(bond);
+
+	rx_hash_table = bond_info->rx_hashtbl;
+	index = bond_info->rx_hashtbl_head;
+	for (; index != RLB_NULL_INDEX; index = next_index) {
+		next_index = rx_hash_table[index].next;
+		if (rx_hash_table[index].slave == slave) {
+			struct slave *assigned_slave = rlb_next_rx_slave(bond);
+
+			if (assigned_slave) {
+				rx_hash_table[index].slave = assigned_slave;
+				if (memcmp(rx_hash_table[index].mac_dst,
+					   mac_bcast, ETH_ALEN)) {
+					bond_info->rx_hashtbl[index].ntt = 1;
+					bond_info->rx_ntt = 1;
+					/* A slave has been removed from the
+					 * table because it is either disabled
+					 * or being released. We must retry the
+					 * update to avoid clients from not
+					 * being updated & disconnecting when
+					 * there is stress
+					 */
+					bond_info->rlb_update_retry_counter =
+						RLB_UPDATE_RETRY;
+				}
+			} else {  /* there is no active slave */
+				rx_hash_table[index].slave = NULL;
+			}
+		}
+	}
+
+	_unlock_rx_hashtbl(bond);
+
+	write_lock(&bond->curr_slave_lock);
+
+	if (slave != bond->curr_active_slave) {
+		rlb_teach_disabled_mac_on_primary(bond, slave->dev->dev_addr);
+	}
+
+	write_unlock(&bond->curr_slave_lock);
+}
+
+static void rlb_update_client(struct rlb_client_info *client_info)
+{
+	int i;
+
+	if (!client_info->slave) {
+		return;
+	}
+
+	for (i = 0; i < RLB_ARP_BURST_SIZE; i++) {
+		struct sk_buff *skb;
+
+		skb = arp_create(ARPOP_REPLY, ETH_P_ARP,
+				 client_info->ip_dst,
+				 client_info->slave->dev,
+				 client_info->ip_src,
+				 client_info->mac_dst,
+				 client_info->slave->dev->dev_addr,
+				 client_info->mac_dst);
+		if (!skb) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: failed to create an ARP packet\n");
+			continue;
+		}
+
+		skb->dev = client_info->slave->dev;
+
+		if (client_info->tag) {
+			skb = vlan_put_tag(skb, client_info->vlan_id);
+			if (!skb) {
+				printk(KERN_ERR DRV_NAME
+				       ": Error: failed to insert VLAN tag\n");
+				continue;
+			}
+		}
+
+		arp_xmit(skb);
+	}
+}
+
+/* sends ARP REPLIES that update the clients that need updating */
+static void rlb_update_rx_clients(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct rlb_client_info *client_info;
+	u32 hash_index;
+
+	_lock_rx_hashtbl(bond);
+
+	hash_index = bond_info->rx_hashtbl_head;
+	for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
+		client_info = &(bond_info->rx_hashtbl[hash_index]);
+		if (client_info->ntt) {
+			rlb_update_client(client_info);
+			if (bond_info->rlb_update_retry_counter == 0) {
+				client_info->ntt = 0;
+			}
+		}
+	}
+
+	/* do not update the entries again untill this counter is zero so that
+	 * not to confuse the clients.
+	 */
+	bond_info->rlb_update_delay_counter = RLB_UPDATE_DELAY;
+
+	_unlock_rx_hashtbl(bond);
+}
+
+/* The slave was assigned a new mac address - update the clients */
+static void rlb_req_update_slave_clients(struct bonding *bond, struct slave *slave)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct rlb_client_info *client_info;
+	int ntt = 0;
+	u32 hash_index;
+
+	_lock_rx_hashtbl(bond);
+
+	hash_index = bond_info->rx_hashtbl_head;
+	for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
+		client_info = &(bond_info->rx_hashtbl[hash_index]);
+
+		if ((client_info->slave == slave) &&
+		    memcmp(client_info->mac_dst, mac_bcast, ETH_ALEN)) {
+			client_info->ntt = 1;
+			ntt = 1;
+		}
+	}
+
+	// update the team's flag only after the whole iteration
+	if (ntt) {
+		bond_info->rx_ntt = 1;
+		//fasten the change
+		bond_info->rlb_update_retry_counter = RLB_UPDATE_RETRY;
+	}
+
+	_unlock_rx_hashtbl(bond);
+}
+
+/* mark all clients using src_ip to be updated */
+static void rlb_req_update_subnet_clients(struct bonding *bond, u32 src_ip)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct rlb_client_info *client_info;
+	u32 hash_index;
+
+	_lock_rx_hashtbl(bond);
+
+	hash_index = bond_info->rx_hashtbl_head;
+	for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
+		client_info = &(bond_info->rx_hashtbl[hash_index]);
+
+		if (!client_info->slave) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: found a client with no channel in "
+			       "the client's hash table\n");
+			continue;
+		}
+		/*update all clients using this src_ip, that are not assigned
+		 * to the team's address (curr_active_slave) and have a known
+		 * unicast mac address.
+		 */
+		if ((client_info->ip_src == src_ip) &&
+		    memcmp(client_info->slave->dev->dev_addr,
+			   bond->dev->dev_addr, ETH_ALEN) &&
+		    memcmp(client_info->mac_dst, mac_bcast, ETH_ALEN)) {
+			client_info->ntt = 1;
+			bond_info->rx_ntt = 1;
+		}
+	}
+
+	_unlock_rx_hashtbl(bond);
+}
+
+/* Caller must hold both bond and ptr locks for read */
+static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct arp_pkt *arp = (struct arp_pkt *)skb->nh.raw;
+	struct slave *assigned_slave;
+	struct rlb_client_info *client_info;
+	u32 hash_index = 0;
+
+	_lock_rx_hashtbl(bond);
+
+	hash_index = _simple_hash((u8 *)&arp->ip_dst, sizeof(arp->ip_src));
+	client_info = &(bond_info->rx_hashtbl[hash_index]);
+
+	if (client_info->assigned) {
+		if ((client_info->ip_src == arp->ip_src) &&
+		    (client_info->ip_dst == arp->ip_dst)) {
+			/* the entry is already assigned to this client */
+			if (memcmp(arp->mac_dst, mac_bcast, ETH_ALEN)) {
+				/* update mac address from arp */
+				memcpy(client_info->mac_dst, arp->mac_dst, ETH_ALEN);
+			}
+
+			assigned_slave = client_info->slave;
+			if (assigned_slave) {
+				_unlock_rx_hashtbl(bond);
+				return assigned_slave;
+			}
+		} else {
+			/* the entry is already assigned to some other client,
+			 * move the old client to primary (curr_active_slave) so
+			 * that the new client can be assigned to this entry.
+			 */
+			if (bond->curr_active_slave &&
+			    client_info->slave != bond->curr_active_slave) {
+				client_info->slave = bond->curr_active_slave;
+				rlb_update_client(client_info);
+			}
+		}
+	}
+	/* assign a new slave */
+	assigned_slave = rlb_next_rx_slave(bond);
+
+	if (assigned_slave) {
+		client_info->ip_src = arp->ip_src;
+		client_info->ip_dst = arp->ip_dst;
+		/* arp->mac_dst is broadcast for arp reqeusts.
+		 * will be updated with clients actual unicast mac address
+		 * upon receiving an arp reply.
+		 */
+		memcpy(client_info->mac_dst, arp->mac_dst, ETH_ALEN);
+		client_info->slave = assigned_slave;
+
+		if (memcmp(client_info->mac_dst, mac_bcast, ETH_ALEN)) {
+			client_info->ntt = 1;
+			bond->alb_info.rx_ntt = 1;
+		} else {
+			client_info->ntt = 0;
+		}
+
+		if (!list_empty(&bond->vlan_list)) {
+			unsigned short vlan_id;
+			int res = vlan_get_tag(skb, &vlan_id);
+			if (!res) {
+				client_info->tag = 1;
+				client_info->vlan_id = vlan_id;
+			}
+		}
+
+		if (!client_info->assigned) {
+			u32 prev_tbl_head = bond_info->rx_hashtbl_head;
+			bond_info->rx_hashtbl_head = hash_index;
+			client_info->next = prev_tbl_head;
+			if (prev_tbl_head != RLB_NULL_INDEX) {
+				bond_info->rx_hashtbl[prev_tbl_head].prev =
+					hash_index;
+			}
+			client_info->assigned = 1;
+		}
+	}
+
+	_unlock_rx_hashtbl(bond);
+
+	return assigned_slave;
+}
+
+/* chooses (and returns) transmit channel for arp reply
+ * does not choose channel for other arp types since they are
+ * sent on the curr_active_slave
+ */
+static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
+{
+	struct arp_pkt *arp = (struct arp_pkt *)skb->nh.raw;
+	struct slave *tx_slave = NULL;
+
+	if (arp->op_code == __constant_htons(ARPOP_REPLY)) {
+		/* the arp must be sent on the selected
+		* rx channel
+		*/
+		tx_slave = rlb_choose_channel(skb, bond);
+		if (tx_slave) {
+			memcpy(arp->mac_src,tx_slave->dev->dev_addr, ETH_ALEN);
+		}
+		dprintk("Server sent ARP Reply packet\n");
+	} else if (arp->op_code == __constant_htons(ARPOP_REQUEST)) {
+		/* Create an entry in the rx_hashtbl for this client as a
+		 * place holder.
+		 * When the arp reply is received the entry will be updated
+		 * with the correct unicast address of the client.
+		 */
+		rlb_choose_channel(skb, bond);
+
+		/* The ARP relpy packets must be delayed so that
+		 * they can cancel out the influence of the ARP request.
+		 */
+		bond->alb_info.rlb_update_delay_counter = RLB_UPDATE_DELAY;
+
+		/* arp requests are broadcast and are sent on the primary
+		 * the arp request will collapse all clients on the subnet to
+		 * the primary slave. We must register these clients to be
+		 * updated with their assigned mac.
+		 */
+		rlb_req_update_subnet_clients(bond, arp->ip_src);
+		dprintk("Server sent ARP Request packet\n");
+	}
+
+	return tx_slave;
+}
+
+/* Caller must hold bond lock for read */
+static void rlb_rebalance(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct slave *assigned_slave;
+	struct rlb_client_info *client_info;
+	int ntt;
+	u32 hash_index;
+
+	_lock_rx_hashtbl(bond);
+
+	ntt = 0;
+	hash_index = bond_info->rx_hashtbl_head;
+	for (; hash_index != RLB_NULL_INDEX; hash_index = client_info->next) {
+		client_info = &(bond_info->rx_hashtbl[hash_index]);
+		assigned_slave = rlb_next_rx_slave(bond);
+		if (assigned_slave && (client_info->slave != assigned_slave)) {
+			client_info->slave = assigned_slave;
+			client_info->ntt = 1;
+			ntt = 1;
+		}
+	}
+
+	/* update the team's flag only after the whole iteration */
+	if (ntt) {
+		bond_info->rx_ntt = 1;
+	}
+	_unlock_rx_hashtbl(bond);
+}
+
+/* Caller must hold rx_hashtbl lock */
+static void rlb_init_table_entry(struct rlb_client_info *entry)
+{
+	memset(entry, 0, sizeof(struct rlb_client_info));
+	entry->next = RLB_NULL_INDEX;
+	entry->prev = RLB_NULL_INDEX;
+}
+
+static int rlb_initialize(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct packet_type *pk_type = &(BOND_ALB_INFO(bond).rlb_pkt_type);
+	int size = RLB_HASH_TABLE_SIZE * sizeof(struct rlb_client_info);
+	int i;
+
+	spin_lock_init(&(bond_info->rx_hashtbl_lock));
+
+	_lock_rx_hashtbl(bond);
+
+	bond_info->rx_hashtbl = kmalloc(size, GFP_KERNEL);
+	if (!bond_info->rx_hashtbl) {
+		printk(KERN_ERR DRV_NAME
+		       ": Error: %s: Failed to allocate RLB hash table\n",
+		       bond->dev->name);
+		_unlock_rx_hashtbl(bond);
+		return -1;
+	}
+
+	bond_info->rx_hashtbl_head = RLB_NULL_INDEX;
+
+	for (i = 0; i < RLB_HASH_TABLE_SIZE; i++) {
+		rlb_init_table_entry(bond_info->rx_hashtbl + i);
+	}
+
+	_unlock_rx_hashtbl(bond);
+
+	/*initialize packet type*/
+	pk_type->type = __constant_htons(ETH_P_ARP);
+	pk_type->dev = bond->dev;
+	pk_type->func = rlb_arp_recv;
+
+	/* register to receive ARPs */
+	dev_add_pack(pk_type);
+
+	return 0;
+}
+
+static void rlb_deinitialize(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+
+	dev_remove_pack(&(bond_info->rlb_pkt_type));
+
+	_lock_rx_hashtbl(bond);
+
+	kfree(bond_info->rx_hashtbl);
+	bond_info->rx_hashtbl = NULL;
+	bond_info->rx_hashtbl_head = RLB_NULL_INDEX;
+
+	_unlock_rx_hashtbl(bond);
+}
+
+static void rlb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	u32 curr_index;
+
+	_lock_rx_hashtbl(bond);
+
+	curr_index = bond_info->rx_hashtbl_head;
+	while (curr_index != RLB_NULL_INDEX) {
+		struct rlb_client_info *curr = &(bond_info->rx_hashtbl[curr_index]);
+		u32 next_index = bond_info->rx_hashtbl[curr_index].next;
+		u32 prev_index = bond_info->rx_hashtbl[curr_index].prev;
+
+		if (curr->tag && (curr->vlan_id == vlan_id)) {
+			if (curr_index == bond_info->rx_hashtbl_head) {
+				bond_info->rx_hashtbl_head = next_index;
+			}
+			if (prev_index != RLB_NULL_INDEX) {
+				bond_info->rx_hashtbl[prev_index].next = next_index;
+			}
+			if (next_index != RLB_NULL_INDEX) {
+				bond_info->rx_hashtbl[next_index].prev = prev_index;
+			}
+
+			rlb_init_table_entry(curr);
+		}
+
+		curr_index = next_index;
+	}
+
+	_unlock_rx_hashtbl(bond);
+}
+
+/*********************** tlb/rlb shared functions *********************/
+
+static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[])
+{
+	struct bonding *bond = bond_get_bond_by_slave(slave);
+	struct learning_pkt pkt;
+	int size = sizeof(struct learning_pkt);
+	int i;
+
+	memset(&pkt, 0, size);
+	memcpy(pkt.mac_dst, mac_addr, ETH_ALEN);
+	memcpy(pkt.mac_src, mac_addr, ETH_ALEN);
+	pkt.type = __constant_htons(ETH_P_LOOP);
+
+	for (i = 0; i < MAX_LP_BURST; i++) {
+		struct sk_buff *skb;
+		char *data;
+
+		skb = dev_alloc_skb(size);
+		if (!skb) {
+			return;
+		}
+
+		data = skb_put(skb, size);
+		memcpy(data, &pkt, size);
+
+		skb->mac.raw = data;
+		skb->nh.raw = data + ETH_HLEN;
+		skb->protocol = pkt.type;
+		skb->priority = TC_PRIO_CONTROL;
+		skb->dev = slave->dev;
+
+		if (!list_empty(&bond->vlan_list)) {
+			struct vlan_entry *vlan;
+
+			vlan = bond_next_vlan(bond,
+					      bond->alb_info.current_alb_vlan);
+
+			bond->alb_info.current_alb_vlan = vlan;
+			if (!vlan) {
+				kfree_skb(skb);
+				continue;
+			}
+
+			skb = vlan_put_tag(skb, vlan->vlan_id);
+			if (!skb) {
+				printk(KERN_ERR DRV_NAME
+				       ": Error: failed to insert VLAN tag\n");
+				continue;
+			}
+		}
+
+		dev_queue_xmit(skb);
+	}
+}
+
+/* hw is a boolean parameter that determines whether we should try and
+ * set the hw address of the device as well as the hw address of the
+ * net_device
+ */
+static int alb_set_slave_mac_addr(struct slave *slave, u8 addr[], int hw)
+{
+	struct net_device *dev = slave->dev;
+	struct sockaddr s_addr;
+
+	if (!hw) {
+		memcpy(dev->dev_addr, addr, dev->addr_len);
+		return 0;
+	}
+
+	/* for rlb each slave must have a unique hw mac addresses so that */
+	/* each slave will receive packets destined to a different mac */
+	memcpy(s_addr.sa_data, addr, dev->addr_len);
+	s_addr.sa_family = dev->type;
+	if (dev_set_mac_address(dev, &s_addr)) {
+		printk(KERN_ERR DRV_NAME
+		       ": Error: dev_set_mac_address of dev %s failed! ALB "
+		       "mode requires that the base driver support setting "
+		       "the hw address also when the network device's "
+		       "interface is open\n",
+		       dev->name);
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+/* Caller must hold bond lock for write or curr_slave_lock for write*/
+static void alb_swap_mac_addr(struct bonding *bond, struct slave *slave1, struct slave *slave2)
+{
+	struct slave *disabled_slave = NULL;
+	u8 tmp_mac_addr[ETH_ALEN];
+	int slaves_state_differ;
+
+	slaves_state_differ = (SLAVE_IS_OK(slave1) != SLAVE_IS_OK(slave2));
+
+	memcpy(tmp_mac_addr, slave1->dev->dev_addr, ETH_ALEN);
+	alb_set_slave_mac_addr(slave1, slave2->dev->dev_addr, bond->alb_info.rlb_enabled);
+	alb_set_slave_mac_addr(slave2, tmp_mac_addr, bond->alb_info.rlb_enabled);
+
+	/* fasten the change in the switch */
+	if (SLAVE_IS_OK(slave1)) {
+		alb_send_learning_packets(slave1, slave1->dev->dev_addr);
+		if (bond->alb_info.rlb_enabled) {
+			/* inform the clients that the mac address
+			 * has changed
+			 */
+			rlb_req_update_slave_clients(bond, slave1);
+		}
+	} else {
+		disabled_slave = slave1;
+	}
+
+	if (SLAVE_IS_OK(slave2)) {
+		alb_send_learning_packets(slave2, slave2->dev->dev_addr);
+		if (bond->alb_info.rlb_enabled) {
+			/* inform the clients that the mac address
+			 * has changed
+			 */
+			rlb_req_update_slave_clients(bond, slave2);
+		}
+	} else {
+		disabled_slave = slave2;
+	}
+
+	if (bond->alb_info.rlb_enabled && slaves_state_differ) {
+		/* A disabled slave was assigned an active mac addr */
+		rlb_teach_disabled_mac_on_primary(bond,
+						  disabled_slave->dev->dev_addr);
+	}
+}
+
+/**
+ * alb_change_hw_addr_on_detach
+ * @bond: bonding we're working on
+ * @slave: the slave that was just detached
+ *
+ * We assume that @slave was already detached from the slave list.
+ *
+ * If @slave's permanent hw address is different both from its current
+ * address and from @bond's address, then somewhere in the bond there's
+ * a slave that has @slave's permanet address as its current address.
+ * We'll make sure that that slave no longer uses @slave's permanent address.
+ *
+ * Caller must hold bond lock
+ */
+static void alb_change_hw_addr_on_detach(struct bonding *bond, struct slave *slave)
+{
+	int perm_curr_diff;
+	int perm_bond_diff;
+
+	perm_curr_diff = memcmp(slave->perm_hwaddr,
+				slave->dev->dev_addr,
+				ETH_ALEN);
+	perm_bond_diff = memcmp(slave->perm_hwaddr,
+				bond->dev->dev_addr,
+				ETH_ALEN);
+
+	if (perm_curr_diff && perm_bond_diff) {
+		struct slave *tmp_slave;
+		int i, found = 0;
+
+		bond_for_each_slave(bond, tmp_slave, i) {
+			if (!memcmp(slave->perm_hwaddr,
+				    tmp_slave->dev->dev_addr,
+				    ETH_ALEN)) {
+				found = 1;
+				break;
+			}
+		}
+
+		if (found) {
+			alb_swap_mac_addr(bond, slave, tmp_slave);
+		}
+	}
+}
+
+/**
+ * alb_handle_addr_collision_on_attach
+ * @bond: bonding we're working on
+ * @slave: the slave that was just attached
+ *
+ * checks uniqueness of slave's mac address and handles the case the
+ * new slave uses the bonds mac address.
+ *
+ * If the permanent hw address of @slave is @bond's hw address, we need to
+ * find a different hw address to give @slave, that isn't in use by any other
+ * slave in the bond. This address must be, of course, one of the premanent
+ * addresses of the other slaves.
+ *
+ * We go over the slave list, and for each slave there we compare its
+ * permanent hw address with the current address of all the other slaves.
+ * If no match was found, then we've found a slave with a permanent address
+ * that isn't used by any other slave in the bond, so we can assign it to
+ * @slave.
+ *
+ * assumption: this function is called before @slave is attached to the
+ * 	       bond slave list.
+ *
+ * caller must hold the bond lock for write since the mac addresses are compared
+ * and may be swapped.
+ */
+static int alb_handle_addr_collision_on_attach(struct bonding *bond, struct slave *slave)
+{
+	struct slave *tmp_slave1, *tmp_slave2, *free_mac_slave;
+	struct slave *has_bond_addr = bond->curr_active_slave;
+	int i, j, found = 0;
+
+	if (bond->slave_cnt == 0) {
+		/* this is the first slave */
+		return 0;
+	}
+
+	/* if slave's mac address differs from bond's mac address
+	 * check uniqueness of slave's mac address against the other
+	 * slaves in the bond.
+	 */
+	if (memcmp(slave->perm_hwaddr, bond->dev->dev_addr, ETH_ALEN)) {
+		bond_for_each_slave(bond, tmp_slave1, i) {
+			if (!memcmp(tmp_slave1->dev->dev_addr, slave->dev->dev_addr,
+				    ETH_ALEN)) {
+				found = 1;
+				break;
+			}
+		}
+
+		if (found) {
+			/* a slave was found that is using the mac address
+			 * of the new slave
+			 */
+			printk(KERN_ERR DRV_NAME
+			       ": Error: the hw address of slave %s is not "
+			       "unique - cannot enslave it!",
+			       slave->dev->name);
+			return -EINVAL;
+		}
+
+		return 0;
+	}
+
+	/* The slave's address is equal to the address of the bond.
+	 * Search for a spare address in the bond for this slave.
+	 */
+	free_mac_slave = NULL;
+
+	bond_for_each_slave(bond, tmp_slave1, i) {
+		found = 0;
+		bond_for_each_slave(bond, tmp_slave2, j) {
+			if (!memcmp(tmp_slave1->perm_hwaddr,
+				    tmp_slave2->dev->dev_addr,
+				    ETH_ALEN)) {
+				found = 1;
+				break;
+			}
+		}
+
+		if (!found) {
+			/* no slave has tmp_slave1's perm addr
+			 * as its curr addr
+			 */
+			free_mac_slave = tmp_slave1;
+			break;
+		}
+
+		if (!has_bond_addr) {
+			if (!memcmp(tmp_slave1->dev->dev_addr,
+				    bond->dev->dev_addr,
+				    ETH_ALEN)) {
+
+				has_bond_addr = tmp_slave1;
+			}
+		}
+	}
+
+	if (free_mac_slave) {
+		alb_set_slave_mac_addr(slave, free_mac_slave->perm_hwaddr,
+				       bond->alb_info.rlb_enabled);
+
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: the hw address of slave %s is in use by "
+		       "the bond; giving it the hw address of %s\n",
+		       slave->dev->name, free_mac_slave->dev->name);
+
+	} else if (has_bond_addr) {
+		printk(KERN_ERR DRV_NAME
+		       ": Error: the hw address of slave %s is in use by the "
+		       "bond; couldn't find a slave with a free hw address to "
+		       "give it (this should not have happened)\n",
+		       slave->dev->name);
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+/**
+ * alb_set_mac_address
+ * @bond:
+ * @addr:
+ *
+ * In TLB mode all slaves are configured to the bond's hw address, but set
+ * their dev_addr field to different addresses (based on their permanent hw
+ * addresses).
+ *
+ * For each slave, this function sets the interface to the new address and then
+ * changes its dev_addr field to its previous value.
+ *
+ * Unwinding assumes bond's mac address has not yet changed.
+ */
+static int alb_set_mac_address(struct bonding *bond, void *addr)
+{
+	struct sockaddr sa;
+	struct slave *slave, *stop_at;
+	char tmp_addr[ETH_ALEN];
+	int res;
+	int i;
+
+	if (bond->alb_info.rlb_enabled) {
+		return 0;
+	}
+
+	bond_for_each_slave(bond, slave, i) {
+		if (slave->dev->set_mac_address == NULL) {
+			res = -EOPNOTSUPP;
+			goto unwind;
+		}
+
+		/* save net_device's current hw address */
+		memcpy(tmp_addr, slave->dev->dev_addr, ETH_ALEN);
+
+		res = dev_set_mac_address(slave->dev, addr);
+
+		/* restore net_device's hw address */
+		memcpy(slave->dev->dev_addr, tmp_addr, ETH_ALEN);
+
+		if (res) {
+			goto unwind;
+		}
+	}
+
+	return 0;
+
+unwind:
+	memcpy(sa.sa_data, bond->dev->dev_addr, bond->dev->addr_len);
+	sa.sa_family = bond->dev->type;
+
+	/* unwind from head to the slave that failed */
+	stop_at = slave;
+	bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) {
+		memcpy(tmp_addr, slave->dev->dev_addr, ETH_ALEN);
+		dev_set_mac_address(slave->dev, &sa);
+		memcpy(slave->dev->dev_addr, tmp_addr, ETH_ALEN);
+	}
+
+	return res;
+}
+
+/************************ exported alb funcions ************************/
+
+int bond_alb_initialize(struct bonding *bond, int rlb_enabled)
+{
+	int res;
+
+	res = tlb_initialize(bond);
+	if (res) {
+		return res;
+	}
+
+	if (rlb_enabled) {
+		bond->alb_info.rlb_enabled = 1;
+		/* initialize rlb */
+		res = rlb_initialize(bond);
+		if (res) {
+			tlb_deinitialize(bond);
+			return res;
+		}
+	}
+
+	return 0;
+}
+
+void bond_alb_deinitialize(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+
+	tlb_deinitialize(bond);
+
+	if (bond_info->rlb_enabled) {
+		rlb_deinitialize(bond);
+	}
+}
+
+int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct ethhdr *eth_data;
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct slave *tx_slave = NULL;
+	static u32 ip_bcast = 0xffffffff;
+	int hash_size = 0;
+	int do_tx_balance = 1;
+	u32 hash_index = 0;
+	u8 *hash_start = NULL;
+	int res = 1;
+
+	skb->mac.raw = (unsigned char *)skb->data;
+	eth_data = eth_hdr(skb);
+
+	/* make sure that the curr_active_slave and the slaves list do
+	 * not change during tx
+	 */
+	read_lock(&bond->lock);
+	read_lock(&bond->curr_slave_lock);
+
+	if (!BOND_IS_OK(bond)) {
+		goto out;
+	}
+
+	switch (ntohs(skb->protocol)) {
+	case ETH_P_IP:
+		if ((memcmp(eth_data->h_dest, mac_bcast, ETH_ALEN) == 0) ||
+		    (skb->nh.iph->daddr == ip_bcast) ||
+		    (skb->nh.iph->protocol == IPPROTO_IGMP)) {
+			do_tx_balance = 0;
+			break;
+		}
+		hash_start = (char*)&(skb->nh.iph->daddr);
+		hash_size = sizeof(skb->nh.iph->daddr);
+		break;
+	case ETH_P_IPV6:
+		if (memcmp(eth_data->h_dest, mac_bcast, ETH_ALEN) == 0) {
+			do_tx_balance = 0;
+			break;
+		}
+
+		hash_start = (char*)&(skb->nh.ipv6h->daddr);
+		hash_size = sizeof(skb->nh.ipv6h->daddr);
+		break;
+	case ETH_P_IPX:
+		if (ipx_hdr(skb)->ipx_checksum !=
+		    __constant_htons(IPX_NO_CHECKSUM)) {
+			/* something is wrong with this packet */
+			do_tx_balance = 0;
+			break;
+		}
+
+		if (ipx_hdr(skb)->ipx_type != IPX_TYPE_NCP) {
+			/* The only protocol worth balancing in
+			 * this family since it has an "ARP" like
+			 * mechanism
+			 */
+			do_tx_balance = 0;
+			break;
+		}
+
+		hash_start = (char*)eth_data->h_dest;
+		hash_size = ETH_ALEN;
+		break;
+	case ETH_P_ARP:
+		do_tx_balance = 0;
+		if (bond_info->rlb_enabled) {
+			tx_slave = rlb_arp_xmit(skb, bond);
+		}
+		break;
+	default:
+		do_tx_balance = 0;
+		break;
+	}
+
+	if (do_tx_balance) {
+		hash_index = _simple_hash(hash_start, hash_size);
+		tx_slave = tlb_choose_channel(bond, hash_index, skb->len);
+	}
+
+	if (!tx_slave) {
+		/* unbalanced or unassigned, send through primary */
+		tx_slave = bond->curr_active_slave;
+		bond_info->unbalanced_load += skb->len;
+	}
+
+	if (tx_slave && SLAVE_IS_OK(tx_slave)) {
+		if (tx_slave != bond->curr_active_slave) {
+			memcpy(eth_data->h_source,
+			       tx_slave->dev->dev_addr,
+			       ETH_ALEN);
+		}
+
+		res = bond_dev_queue_xmit(bond, skb, tx_slave->dev);
+	} else {
+		if (tx_slave) {
+			tlb_clear_slave(bond, tx_slave, 0);
+		}
+	}
+
+out:
+	if (res) {
+		/* no suitable interface, frame not sent */
+		dev_kfree_skb(skb);
+	}
+	read_unlock(&bond->curr_slave_lock);
+	read_unlock(&bond->lock);
+	return 0;
+}
+
+void bond_alb_monitor(struct bonding *bond)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+	struct slave *slave;
+	int i;
+
+	read_lock(&bond->lock);
+
+	if (bond->kill_timers) {
+		goto out;
+	}
+
+	if (bond->slave_cnt == 0) {
+		bond_info->tx_rebalance_counter = 0;
+		bond_info->lp_counter = 0;
+		goto re_arm;
+	}
+
+	bond_info->tx_rebalance_counter++;
+	bond_info->lp_counter++;
+
+	/* send learning packets */
+	if (bond_info->lp_counter >= BOND_ALB_LP_TICKS) {
+		/* change of curr_active_slave involves swapping of mac addresses.
+		 * in order to avoid this swapping from happening while
+		 * sending the learning packets, the curr_slave_lock must be held for
+		 * read.
+		 */
+		read_lock(&bond->curr_slave_lock);
+
+		bond_for_each_slave(bond, slave, i) {
+			alb_send_learning_packets(slave,slave->dev->dev_addr);
+		}
+
+		read_unlock(&bond->curr_slave_lock);
+
+		bond_info->lp_counter = 0;
+	}
+
+	/* rebalance tx traffic */
+	if (bond_info->tx_rebalance_counter >= BOND_TLB_REBALANCE_TICKS) {
+
+		read_lock(&bond->curr_slave_lock);
+
+		bond_for_each_slave(bond, slave, i) {
+			tlb_clear_slave(bond, slave, 1);
+			if (slave == bond->curr_active_slave) {
+				SLAVE_TLB_INFO(slave).load =
+					bond_info->unbalanced_load /
+						BOND_TLB_REBALANCE_INTERVAL;
+				bond_info->unbalanced_load = 0;
+			}
+		}
+
+		read_unlock(&bond->curr_slave_lock);
+
+		bond_info->tx_rebalance_counter = 0;
+	}
+
+	/* handle rlb stuff */
+	if (bond_info->rlb_enabled) {
+		/* the following code changes the promiscuity of the
+		 * the curr_active_slave. It needs to be locked with a
+		 * write lock to protect from other code that also
+		 * sets the promiscuity.
+		 */
+		write_lock(&bond->curr_slave_lock);
+
+		if (bond_info->primary_is_promisc &&
+		    (++bond_info->rlb_promisc_timeout_counter >= RLB_PROMISC_TIMEOUT)) {
+
+			bond_info->rlb_promisc_timeout_counter = 0;
+
+			/* If the primary was set to promiscuous mode
+			 * because a slave was disabled then
+			 * it can now leave promiscuous mode.
+			 */
+			dev_set_promiscuity(bond->curr_active_slave->dev, -1);
+			bond_info->primary_is_promisc = 0;
+		}
+
+		write_unlock(&bond->curr_slave_lock);
+
+		if (bond_info->rlb_rebalance) {
+			bond_info->rlb_rebalance = 0;
+			rlb_rebalance(bond);
+		}
+
+		/* check if clients need updating */
+		if (bond_info->rx_ntt) {
+			if (bond_info->rlb_update_delay_counter) {
+				--bond_info->rlb_update_delay_counter;
+			} else {
+				rlb_update_rx_clients(bond);
+				if (bond_info->rlb_update_retry_counter) {
+					--bond_info->rlb_update_retry_counter;
+				} else {
+					bond_info->rx_ntt = 0;
+				}
+			}
+		}
+	}
+
+re_arm:
+	mod_timer(&(bond_info->alb_timer), jiffies + alb_delta_in_ticks);
+out:
+	read_unlock(&bond->lock);
+}
+
+/* assumption: called before the slave is attached to the bond
+ * and not locked by the bond lock
+ */
+int bond_alb_init_slave(struct bonding *bond, struct slave *slave)
+{
+	int res;
+
+	res = alb_set_slave_mac_addr(slave, slave->perm_hwaddr,
+				     bond->alb_info.rlb_enabled);
+	if (res) {
+		return res;
+	}
+
+	/* caller must hold the bond lock for write since the mac addresses
+	 * are compared and may be swapped.
+	 */
+	write_lock_bh(&bond->lock);
+
+	res = alb_handle_addr_collision_on_attach(bond, slave);
+
+	write_unlock_bh(&bond->lock);
+
+	if (res) {
+		return res;
+	}
+
+	tlb_init_slave(slave);
+
+	/* order a rebalance ASAP */
+	bond->alb_info.tx_rebalance_counter = BOND_TLB_REBALANCE_TICKS;
+
+	if (bond->alb_info.rlb_enabled) {
+		bond->alb_info.rlb_rebalance = 1;
+	}
+
+	return 0;
+}
+
+/* Caller must hold bond lock for write */
+void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave)
+{
+	if (bond->slave_cnt > 1) {
+		alb_change_hw_addr_on_detach(bond, slave);
+	}
+
+	tlb_clear_slave(bond, slave, 0);
+
+	if (bond->alb_info.rlb_enabled) {
+		bond->alb_info.next_rx_slave = NULL;
+		rlb_clear_slave(bond, slave);
+	}
+}
+
+/* Caller must hold bond lock for read */
+void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link)
+{
+	struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
+
+	if (link == BOND_LINK_DOWN) {
+		tlb_clear_slave(bond, slave, 0);
+		if (bond->alb_info.rlb_enabled) {
+			rlb_clear_slave(bond, slave);
+		}
+	} else if (link == BOND_LINK_UP) {
+		/* order a rebalance ASAP */
+		bond_info->tx_rebalance_counter = BOND_TLB_REBALANCE_TICKS;
+		if (bond->alb_info.rlb_enabled) {
+			bond->alb_info.rlb_rebalance = 1;
+			/* If the updelay module parameter is smaller than the
+			 * forwarding delay of the switch the rebalance will
+			 * not work because the rebalance arp replies will
+			 * not be forwarded to the clients..
+			 */
+		}
+	}
+}
+
+/**
+ * bond_alb_handle_active_change - assign new curr_active_slave
+ * @bond: our bonding struct
+ * @new_slave: new slave to assign
+ *
+ * Set the bond->curr_active_slave to @new_slave and handle
+ * mac address swapping and promiscuity changes as needed.
+ *
+ * Caller must hold bond curr_slave_lock for write (or bond lock for write)
+ */
+void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave)
+{
+	struct slave *swap_slave;
+	int i;
+
+	if (bond->curr_active_slave == new_slave) {
+		return;
+	}
+
+	if (bond->curr_active_slave && bond->alb_info.primary_is_promisc) {
+		dev_set_promiscuity(bond->curr_active_slave->dev, -1);
+		bond->alb_info.primary_is_promisc = 0;
+		bond->alb_info.rlb_promisc_timeout_counter = 0;
+	}
+
+	swap_slave = bond->curr_active_slave;
+	bond->curr_active_slave = new_slave;
+
+	if (!new_slave || (bond->slave_cnt == 0)) {
+		return;
+	}
+
+	/* set the new curr_active_slave to the bonds mac address
+	 * i.e. swap mac addresses of old curr_active_slave and new curr_active_slave
+	 */
+	if (!swap_slave) {
+		struct slave *tmp_slave;
+		/* find slave that is holding the bond's mac address */
+		bond_for_each_slave(bond, tmp_slave, i) {
+			if (!memcmp(tmp_slave->dev->dev_addr,
+				    bond->dev->dev_addr, ETH_ALEN)) {
+				swap_slave = tmp_slave;
+				break;
+			}
+		}
+	}
+
+	/* curr_active_slave must be set before calling alb_swap_mac_addr */
+	if (swap_slave) {
+		/* swap mac address */
+		alb_swap_mac_addr(bond, swap_slave, new_slave);
+	} else {
+		/* set the new_slave to the bond mac address */
+		alb_set_slave_mac_addr(new_slave, bond->dev->dev_addr,
+				       bond->alb_info.rlb_enabled);
+		/* fasten bond mac on new current slave */
+		alb_send_learning_packets(new_slave, bond->dev->dev_addr);
+	}
+}
+
+int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct sockaddr *sa = addr;
+	struct slave *slave, *swap_slave;
+	int res;
+	int i;
+
+	if (!is_valid_ether_addr(sa->sa_data)) {
+		return -EADDRNOTAVAIL;
+	}
+
+	res = alb_set_mac_address(bond, addr);
+	if (res) {
+		return res;
+	}
+
+	memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len);
+
+	/* If there is no curr_active_slave there is nothing else to do.
+	 * Otherwise we'll need to pass the new address to it and handle
+	 * duplications.
+	 */
+	if (!bond->curr_active_slave) {
+		return 0;
+	}
+
+	swap_slave = NULL;
+
+	bond_for_each_slave(bond, slave, i) {
+		if (!memcmp(slave->dev->dev_addr, bond_dev->dev_addr, ETH_ALEN)) {
+			swap_slave = slave;
+			break;
+		}
+	}
+
+	if (swap_slave) {
+		alb_swap_mac_addr(bond, swap_slave, bond->curr_active_slave);
+	} else {
+		alb_set_slave_mac_addr(bond->curr_active_slave, bond_dev->dev_addr,
+				       bond->alb_info.rlb_enabled);
+
+		alb_send_learning_packets(bond->curr_active_slave, bond_dev->dev_addr);
+		if (bond->alb_info.rlb_enabled) {
+			/* inform clients mac address has changed */
+			rlb_req_update_slave_clients(bond, bond->curr_active_slave);
+		}
+	}
+
+	return 0;
+}
+
+void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id)
+{
+	if (bond->alb_info.current_alb_vlan &&
+	    (bond->alb_info.current_alb_vlan->vlan_id == vlan_id)) {
+		bond->alb_info.current_alb_vlan = NULL;
+	}
+
+	if (bond->alb_info.rlb_enabled) {
+		rlb_clear_vlan(bond, vlan_id);
+	}
+}
+
diff --git a/drivers/net/bonding/bond_alb.h b/drivers/net/bonding/bond_alb.h
new file mode 100644
index 0000000..e4091cd
--- /dev/null
+++ b/drivers/net/bonding/bond_alb.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ *
+ * Changes:
+ *
+ * 2003/08/06 - Amir Noam <amir.noam at intel dot com>
+ *	- Add support for setting bond's MAC address with special
+ *	  handling required for ALB/TLB.
+ *
+ * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Code cleanup and style changes
+ */
+
+#ifndef __BOND_ALB_H__
+#define __BOND_ALB_H__
+
+#include <linux/if_ether.h>
+
+struct bonding;
+struct slave;
+
+#define BOND_ALB_INFO(bond)   ((bond)->alb_info)
+#define SLAVE_TLB_INFO(slave) ((slave)->tlb_info)
+
+struct tlb_client_info {
+	struct slave *tx_slave;	/* A pointer to slave used for transmiting
+				 * packets to a Client that the Hash function
+				 * gave this entry index.
+				 */
+	u32 tx_bytes;		/* Each Client acumulates the BytesTx that
+				 * were tranmitted to it, and after each
+				 * CallBack the LoadHistory is devided
+				 * by the balance interval
+				 */
+	u32 load_history;	/* This field contains the amount of Bytes
+				 * that were transmitted to this client by
+				 * the server on the previous balance
+				 * interval in Bps.
+				 */
+	u32 next;		/* The next Hash table entry index, assigned
+				 * to use the same adapter for transmit.
+				 */
+	u32 prev;		/* The previous Hash table entry index,
+				 * assigned to use the same
+				 */
+};
+
+/* -------------------------------------------------------------------------
+ * struct rlb_client_info contains all info related to a specific rx client
+ * connection. This is the Clients Hash Table entry struct
+ * -------------------------------------------------------------------------
+ */
+struct rlb_client_info {
+	u32 ip_src;		/* the server IP address */
+	u32 ip_dst;		/* the client IP address */
+	u8  mac_dst[ETH_ALEN];	/* the client MAC address */
+	u32 next;		/* The next Hash table entry index */
+	u32 prev;		/* The previous Hash table entry index */
+	u8  assigned;		/* checking whether this entry is assigned */
+	u8  ntt;		/* flag - need to transmit client info */
+	struct slave *slave;	/* the slave assigned to this client */
+	u8 tag;			/* flag - need to tag skb */
+	unsigned short vlan_id;	/* VLAN tag associated with IP address */
+};
+
+struct tlb_slave_info {
+	u32 head;	/* Index to the head of the bi-directional clients
+			 * hash table entries list. The entries in the list
+			 * are the entries that were assigned to use this
+			 * slave for transmit.
+			 */
+	u32 load;	/* Each slave sums the loadHistory of all clients
+			 * assigned to it
+			 */
+};
+
+struct alb_bond_info {
+	struct timer_list	alb_timer;
+	struct tlb_client_info	*tx_hashtbl; /* Dynamically allocated */
+	spinlock_t		tx_hashtbl_lock;
+	u32			unbalanced_load;
+	int			tx_rebalance_counter;
+	int			lp_counter;
+	/* -------- rlb parameters -------- */
+	int rlb_enabled;
+	struct packet_type	rlb_pkt_type;
+	struct rlb_client_info	*rx_hashtbl;	/* Receive hash table */
+	spinlock_t		rx_hashtbl_lock;
+	u32			rx_hashtbl_head;
+	u8			rx_ntt;	/* flag - need to transmit
+					 * to all rx clients
+					 */
+	struct slave		*next_rx_slave;/* next slave to be assigned
+						* to a new rx client for
+						*/
+	u32			rlb_interval_counter;
+	u8			primary_is_promisc;	   /* boolean */
+	u32			rlb_promisc_timeout_counter;/* counts primary
+							     * promiscuity time
+							     */
+	u32			rlb_update_delay_counter;
+	u32			rlb_update_retry_counter;/* counter of retries
+							  * of client update
+							  */
+	u8			rlb_rebalance;	/* flag - indicates that the
+						 * rx traffic should be
+						 * rebalanced
+						 */
+	struct vlan_entry	*current_alb_vlan;
+};
+
+int bond_alb_initialize(struct bonding *bond, int rlb_enabled);
+void bond_alb_deinitialize(struct bonding *bond);
+int bond_alb_init_slave(struct bonding *bond, struct slave *slave);
+void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave);
+void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link);
+void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave);
+int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev);
+void bond_alb_monitor(struct bonding *bond);
+int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr);
+void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id);
+#endif /* __BOND_ALB_H__ */
+
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
new file mode 100644
index 0000000..770e28f
--- /dev/null
+++ b/drivers/net/bonding/bond_main.c
@@ -0,0 +1,4708 @@
+/*
+ * originally based on the dummy device.
+ *
+ * Copyright 1999, Thomas Davis, tadavis@lbl.gov.
+ * Licensed under the GPL. Based on dummy.c, and eql.c devices.
+ *
+ * bonding.c: an Ethernet Bonding driver
+ *
+ * This is useful to talk to a Cisco EtherChannel compatible equipment:
+ *	Cisco 5500
+ *	Sun Trunking (Solaris)
+ *	Alteon AceDirector Trunks
+ *	Linux Bonding
+ *	and probably many L2 switches ...
+ *
+ * How it works:
+ *    ifconfig bond0 ipaddress netmask up
+ *      will setup a network device, with an ip address.  No mac address
+ *	will be assigned at this time.  The hw mac address will come from
+ *	the first slave bonded to the channel.  All slaves will then use
+ *	this hw mac address.
+ *
+ *    ifconfig bond0 down
+ *         will release all slaves, marking them as down.
+ *
+ *    ifenslave bond0 eth0
+ *	will attach eth0 to bond0 as a slave.  eth0 hw mac address will either
+ *	a: be used as initial mac address
+ *	b: if a hw mac address already is there, eth0's hw mac address
+ *	   will then be set from bond0.
+ *
+ * v0.1 - first working version.
+ * v0.2 - changed stats to be calculated by summing slaves stats.
+ *
+ * Changes:
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ * - fix leaks on failure at bond_init
+ *
+ * 2000/09/30 - Willy Tarreau <willy at meta-x.org>
+ *     - added trivial code to release a slave device.
+ *     - fixed security bug (CAP_NET_ADMIN not checked)
+ *     - implemented MII link monitoring to disable dead links :
+ *       All MII capable slaves are checked every <miimon> milliseconds
+ *       (100 ms seems good). This value can be changed by passing it to
+ *       insmod. A value of zero disables the monitoring (default).
+ *     - fixed an infinite loop in bond_xmit_roundrobin() when there's no
+ *       good slave.
+ *     - made the code hopefully SMP safe
+ *
+ * 2000/10/03 - Willy Tarreau <willy at meta-x.org>
+ *     - optimized slave lists based on relevant suggestions from Thomas Davis
+ *     - implemented active-backup method to obtain HA with two switches:
+ *       stay as long as possible on the same active interface, while we
+ *       also monitor the backup one (MII link status) because we want to know
+ *       if we are able to switch at any time. ( pass "mode=1" to insmod )
+ *     - lots of stress testings because we need it to be more robust than the
+ *       wires ! :->
+ *
+ * 2000/10/09 - Willy Tarreau <willy at meta-x.org>
+ *     - added up and down delays after link state change.
+ *     - optimized the slaves chaining so that when we run forward, we never
+ *       repass through the bond itself, but we can find it by searching
+ *       backwards. Renders the deletion more difficult, but accelerates the
+ *       scan.
+ *     - smarter enslaving and releasing.
+ *     - finer and more robust SMP locking
+ *
+ * 2000/10/17 - Willy Tarreau <willy at meta-x.org>
+ *     - fixed two potential SMP race conditions
+ *
+ * 2000/10/18 - Willy Tarreau <willy at meta-x.org>
+ *     - small fixes to the monitoring FSM in case of zero delays
+ * 2000/11/01 - Willy Tarreau <willy at meta-x.org>
+ *     - fixed first slave not automatically used in trunk mode.
+ * 2000/11/10 : spelling of "EtherChannel" corrected.
+ * 2000/11/13 : fixed a race condition in case of concurrent accesses to ioctl().
+ * 2000/12/16 : fixed improper usage of rtnl_exlock_nowait().
+ *
+ * 2001/1/3 - Chad N. Tindel <ctindel at ieee dot org>
+ *     - The bonding driver now simulates MII status monitoring, just like
+ *       a normal network device.  It will show that the link is down iff
+ *       every slave in the bond shows that their links are down.  If at least
+ *       one slave is up, the bond's MII status will appear as up.
+ *
+ * 2001/2/7 - Chad N. Tindel <ctindel at ieee dot org>
+ *     - Applications can now query the bond from user space to get
+ *       information which may be useful.  They do this by calling
+ *       the BOND_INFO_QUERY ioctl.  Once the app knows how many slaves
+ *       are in the bond, it can call the BOND_SLAVE_INFO_QUERY ioctl to
+ *       get slave specific information (# link failures, etc).  See
+ *       <linux/if_bonding.h> for more details.  The structs of interest
+ *       are ifbond and ifslave.
+ *
+ * 2001/4/5 - Chad N. Tindel <ctindel at ieee dot org>
+ *     - Ported to 2.4 Kernel
+ *
+ * 2001/5/2 - Jeffrey E. Mast <jeff at mastfamily dot com>
+ *     - When a device is detached from a bond, the slave device is no longer
+ *       left thinking that is has a master.
+ *
+ * 2001/5/16 - Jeffrey E. Mast <jeff at mastfamily dot com>
+ *     - memset did not appropriately initialized the bond rw_locks. Used
+ *       rwlock_init to initialize to unlocked state to prevent deadlock when
+ *       first attempting a lock
+ *     - Called SET_MODULE_OWNER for bond device
+ *
+ * 2001/5/17 - Tim Anderson <tsa at mvista.com>
+ *     - 2 paths for releasing for slave release; 1 through ioctl
+ *       and 2) through close. Both paths need to release the same way.
+ *     - the free slave in bond release is changing slave status before
+ *       the free. The netdev_set_master() is intended to change slave state
+ *       so it should not be done as part of the release process.
+ *     - Simple rule for slave state at release: only the active in A/B and
+ *       only one in the trunked case.
+ *
+ * 2001/6/01 - Tim Anderson <tsa at mvista.com>
+ *     - Now call dev_close when releasing a slave so it doesn't screw up
+ *       out routing table.
+ *
+ * 2001/6/01 - Chad N. Tindel <ctindel at ieee dot org>
+ *     - Added /proc support for getting bond and slave information.
+ *       Information is in /proc/net/<bond device>/info.
+ *     - Changed the locking when calling bond_close to prevent deadlock.
+ *
+ * 2001/8/05 - Janice Girouard <girouard at us.ibm.com>
+ *     - correct problem where refcnt of slave is not incremented in bond_ioctl
+ *       so the system hangs when halting.
+ *     - correct locking problem when unable to malloc in bond_enslave.
+ *     - adding bond_xmit_xor logic.
+ *     - adding multiple bond device support.
+ *
+ * 2001/8/13 - Erik Habbinga <erik_habbinga at hp dot com>
+ *     - correct locking problem with rtnl_exlock_nowait
+ *
+ * 2001/8/23 - Janice Girouard <girouard at us.ibm.com>
+ *     - bzero initial dev_bonds, to correct oops
+ *     - convert SIOCDEVPRIVATE to new MII ioctl calls
+ *
+ * 2001/9/13 - Takao Indoh <indou dot takao at jp dot fujitsu dot com>
+ *     - Add the BOND_CHANGE_ACTIVE ioctl implementation
+ *
+ * 2001/9/14 - Mark Huth <mhuth at mvista dot com>
+ *     - Change MII_LINK_READY to not check for end of auto-negotiation,
+ *       but only for an up link.
+ *
+ * 2001/9/20 - Chad N. Tindel <ctindel at ieee dot org>
+ *     - Add the device field to bonding_t.  Previously the net_device
+ *       corresponding to a bond wasn't available from the bonding_t
+ *       structure.
+ *
+ * 2001/9/25 - Janice Girouard <girouard at us.ibm.com>
+ *     - add arp_monitor for active backup mode
+ *
+ * 2001/10/23 - Takao Indoh <indou dot takao at jp dot fujitsu dot com>
+ *     - Various memory leak fixes
+ *
+ * 2001/11/5 - Mark Huth <mark dot huth at mvista dot com>
+ *     - Don't take rtnl lock in bond_mii_monitor as it deadlocks under
+ *       certain hotswap conditions.
+ *       Note:  this same change may be required in bond_arp_monitor ???
+ *     - Remove possibility of calling bond_sethwaddr with NULL slave_dev ptr
+ *     - Handle hot swap ethernet interface deregistration events to remove
+ *       kernel oops following hot swap of enslaved interface
+ *
+ * 2002/1/2 - Chad N. Tindel <ctindel at ieee dot org>
+ *     - Restore original slave flags at release time.
+ *
+ * 2002/02/18 - Erik Habbinga <erik_habbinga at hp dot com>
+ *     - bond_release(): calling kfree on our_slave after call to
+ *       bond_restore_slave_flags, not before
+ *     - bond_enslave(): saving slave flags into original_flags before
+ *       call to netdev_set_master, so the IFF_SLAVE flag doesn't end
+ *       up in original_flags
+ *
+ * 2002/04/05 - Mark Smith <mark.smith at comdev dot cc> and
+ *              Steve Mead <steve.mead at comdev dot cc>
+ *     - Port Gleb Natapov's multicast support patchs from 2.4.12
+ *       to 2.4.18 adding support for multicast.
+ *
+ * 2002/06/10 - Tony Cureington <tony.cureington * hp_com>
+ *     - corrected uninitialized pointer (ifr.ifr_data) in bond_check_dev_link;
+ *       actually changed function to use MIIPHY, then MIIREG, and finally
+ *       ETHTOOL to determine the link status
+ *     - fixed bad ifr_data pointer assignments in bond_ioctl
+ *     - corrected mode 1 being reported as active-backup in bond_get_info;
+ *       also added text to distinguish type of load balancing (rr or xor)
+ *     - change arp_ip_target module param from "1-12s" (array of 12 ptrs)
+ *       to "s" (a single ptr)
+ *
+ * 2002/08/30 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *     - Removed acquisition of xmit_lock in set_multicast_list; caused
+ *       deadlock on SMP (lock is held by caller).
+ *     - Revamped SIOCGMIIPHY, SIOCGMIIREG portion of bond_check_dev_link().
+ *
+ * 2002/09/18 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *     - Fixed up bond_check_dev_link() (and callers): removed some magic
+ *	 numbers, banished local MII_ defines, wrapped ioctl calls to
+ *	 prevent EFAULT errors
+ *
+ * 2002/9/30 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *     - make sure the ip target matches the arp_target before saving the
+ *	 hw address.
+ *
+ * 2002/9/30 - Dan Eisner <eisner at 2robots dot com>
+ *     - make sure my_ip is set before taking down the link, since
+ *	 not all switches respond if the source ip is not set.
+ *
+ * 2002/10/8 - Janice Girouard <girouard at us dot ibm dot com>
+ *     - read in the local ip address when enslaving a device
+ *     - add primary support
+ *     - make sure 2*arp_interval has passed when a new device
+ *       is brought on-line before taking it down.
+ *
+ * 2002/09/11 - Philippe De Muyter <phdm at macqel dot be>
+ *     - Added bond_xmit_broadcast logic.
+ *     - Added bond_mode() support function.
+ *
+ * 2002/10/26 - Laurent Deniel <laurent.deniel at free.fr>
+ *     - allow to register multicast addresses only on active slave
+ *       (useful in active-backup mode)
+ *     - add multicast module parameter
+ *     - fix deletion of multicast groups after unloading module
+ *
+ * 2002/11/06 - Kameshwara Rayaprolu <kameshwara.rao * wipro_com>
+ *     - Changes to prevent panic from closing the device twice; if we close
+ *       the device in bond_release, we must set the original_flags to down
+ *       so it won't be closed again by the network layer.
+ *
+ * 2002/11/07 - Tony Cureington <tony.cureington * hp_com>
+ *     - Fix arp_target_hw_addr memory leak
+ *     - Created activebackup_arp_monitor function to handle arp monitoring
+ *       in active backup mode - the bond_arp_monitor had several problems...
+ *       such as allowing slaves to tx arps sequentially without any delay
+ *       for a response
+ *     - Renamed bond_arp_monitor to loadbalance_arp_monitor and re-wrote
+ *       this function to just handle arp monitoring in load-balancing mode;
+ *       it is a lot more compact now
+ *     - Changes to ensure one and only one slave transmits in active-backup
+ *       mode
+ *     - Robustesize parameters; warn users about bad combinations of
+ *       parameters; also if miimon is specified and a network driver does
+ *       not support MII or ETHTOOL, inform the user of this
+ *     - Changes to support link_failure_count when in arp monitoring mode
+ *     - Fix up/down delay reported in /proc
+ *     - Added version; log version; make version available from "modinfo -d"
+ *     - Fixed problem in bond_check_dev_link - if the first IOCTL (SIOCGMIIPH)
+ *	 failed, the ETHTOOL ioctl never got a chance
+ *
+ * 2002/11/16 - Laurent Deniel <laurent.deniel at free.fr>
+ *     - fix multicast handling in activebackup_arp_monitor
+ *     - remove one unnecessary and confusing curr_active_slave == slave test
+ *	 in activebackup_arp_monitor
+ *
+ *  2002/11/17 - Laurent Deniel <laurent.deniel at free.fr>
+ *     - fix bond_slave_info_query when slave_id = num_slaves
+ *
+ *  2002/11/19 - Janice Girouard <girouard at us dot ibm dot com>
+ *     - correct ifr_data reference.  Update ifr_data reference
+ *       to mii_ioctl_data struct values to avoid confusion.
+ *
+ *  2002/11/22 - Bert Barbe <bert.barbe at oracle dot com>
+ *      - Add support for multiple arp_ip_target
+ *
+ *  2002/12/13 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *	- Changed to allow text strings for mode and multicast, e.g.,
+ *	  insmod bonding mode=active-backup.  The numbers still work.
+ *	  One change: an invalid choice will cause module load failure,
+ *	  rather than the previous behavior of just picking one.
+ *	- Minor cleanups; got rid of dup ctype stuff, atoi function
+ *
+ * 2003/02/07 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *	- Added use_carrier module parameter that causes miimon to
+ *	  use netif_carrier_ok() test instead of MII/ETHTOOL ioctls.
+ *	- Minor cleanups; consolidated ioctl calls to one function.
+ *
+ * 2003/02/07 - Tony Cureington <tony.cureington * hp_com>
+ *	- Fix bond_mii_monitor() logic error that could result in
+ *	  bonding round-robin mode ignoring links after failover/recovery
+ *
+ * 2003/03/17 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *	- kmalloc fix (GFP_KERNEL to GFP_ATOMIC) reported by
+ *	  Shmulik dot Hen at intel.com.
+ *	- Based on discussion on mailing list, changed use of
+ *	  update_slave_cnt(), created wrapper functions for adding/removing
+ *	  slaves, changed bond_xmit_xor() to check slave_cnt instead of
+ *	  checking slave and slave->dev (which only worked by accident).
+ *	- Misc code cleanup: get arp_send() prototype from header file,
+ *	  add max_bonds to bonding.txt.
+ *
+ * 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Make sure only bond_attach_slave() and bond_detach_slave() can
+ *	  manipulate the slave list, including slave_cnt, even when in
+ *	  bond_release_all().
+ *	- Fixed hang in bond_release() with traffic running:
+ *	  netdev_set_master() must not be called from within the bond lock.
+ *
+ * 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Fixed hang in bond_enslave() with traffic running:
+ *	  netdev_set_master() must not be called from within the bond lock.
+ *
+ * 2003/03/18 - Amir Noam <amir.noam at intel dot com>
+ *	- Added support for getting slave's speed and duplex via ethtool.
+ *	  Needed for 802.3ad and other future modes.
+ *
+ * 2003/03/18 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Enable support of modes that need to use the unique mac address of
+ *	  each slave.
+ *	  * bond_enslave(): Moved setting the slave's mac address, and
+ *	    openning it, from the application to the driver. This breaks
+ *	    backward comaptibility with old versions of ifenslave that open
+ *	     the slave before enalsving it !!!.
+ *	  * bond_release(): The driver also takes care of closing the slave
+ *	    and restoring its original mac address.
+ *	- Removed the code that restores all base driver's flags.
+ *	  Flags are automatically restored once all undo stages are done
+ *	  properly.
+ *	- Block possibility of enslaving before the master is up. This
+ *	  prevents putting the system in an unstable state.
+ *
+ * 2003/03/18 - Amir Noam <amir.noam at intel dot com>,
+ *		Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Added support for IEEE 802.3ad Dynamic link aggregation mode.
+ *
+ * 2003/05/01 - Amir Noam <amir.noam at intel dot com>
+ *	- Added ABI version control to restore compatibility between
+ *	  new/old ifenslave and new/old bonding.
+ *
+ * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Fixed bug in bond_release_all(): save old value of curr_active_slave
+ *	  before setting it to NULL.
+ *	- Changed driver versioning scheme to include version number instead
+ *	  of release date (that is already in another field). There are 3
+ *	  fields X.Y.Z where:
+ *		X - Major version - big behavior changes
+ *		Y - Minor version - addition of features
+ *		Z - Extra version - minor changes and bug fixes
+ *	  The current version is 1.0.0 as a base line.
+ *
+ * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Amir Noam <amir.noam at intel dot com>
+ *	- Added support for lacp_rate module param.
+ *	- Code beautification and style changes (mainly in comments).
+ *	  new version - 1.0.1
+ *
+ * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Based on discussion on mailing list, changed locking scheme
+ *	  to use lock/unlock or lock_bh/unlock_bh appropriately instead
+ *	  of lock_irqsave/unlock_irqrestore. The new scheme helps exposing
+ *	  hidden bugs and solves system hangs that occurred due to the fact
+ *	  that holding lock_irqsave doesn't prevent softirqs from running.
+ *	  This also increases total throughput since interrupts are not
+ *	  blocked on each transmitted packets or monitor timeout.
+ *	  new version - 2.0.0
+ *
+ * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Added support for Transmit load balancing mode.
+ *	- Concentrate all assignments of curr_active_slave to a single point
+ *	  so specific modes can take actions when the primary adapter is
+ *	  changed.
+ *	- Take the updelay parameter into consideration during bond_enslave
+ *	  since some adapters loose their link during setting the device.
+ *	- Renamed bond_3ad_link_status_changed() to
+ *	  bond_3ad_handle_link_change() for compatibility with TLB.
+ *	  new version - 2.1.0
+ *
+ * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com>
+ *	- Added support for Adaptive load balancing mode which is
+ *	  equivalent to Transmit load balancing + Receive load balancing.
+ *	  new version - 2.2.0
+ *
+ * 2003/05/15 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *	- Applied fix to activebackup_arp_monitor posted to bonding-devel
+ *	  by Tony Cureington <tony.cureington * hp_com>.  Fixes ARP
+ *	  monitor endless failover bug.  Version to 2.2.10
+ *
+ * 2003/05/20 - Amir Noam <amir.noam at intel dot com>
+ *	- Fixed bug in ABI version control - Don't commit to a specific
+ *	  ABI version if receiving unsupported ioctl commands.
+ *
+ * 2003/05/22 - Jay Vosburgh <fubar at us dot ibm dot com>
+ *	- Fix ifenslave -c causing bond to loose existing routes;
+ *	  added bond_set_mac_address() that doesn't require the
+ *	  bond to be down.
+ *	- In conjunction with fix for ifenslave -c, in
+ *	  bond_change_active(), changing to the already active slave
+ *	  is no longer an error (it successfully does nothing).
+ *
+ * 2003/06/30 - Amir Noam <amir.noam at intel dot com>
+ * 	- Fixed bond_change_active() for ALB/TLB modes.
+ *	  Version to 2.2.14.
+ *
+ * 2003/07/29 - Amir Noam <amir.noam at intel dot com>
+ * 	- Fixed ARP monitoring bug.
+ *	  Version to 2.2.15.
+ *
+ * 2003/07/31 - Willy Tarreau <willy at ods dot org>
+ * 	- Fixed kernel panic when using ARP monitoring without
+ *	  setting bond's IP address.
+ *	  Version to 2.2.16.
+ *
+ * 2003/08/06 - Amir Noam <amir.noam at intel dot com>
+ * 	- Back port from 2.6: use alloc_netdev(); fix /proc handling;
+ *	  made stats a part of bond struct so no need to allocate
+ *	  and free it separately; use standard list operations instead
+ *	  of pre-allocated array of bonds.
+ *	  Version to 2.3.0.
+ *
+ * 2003/08/07 - Jay Vosburgh <fubar at us dot ibm dot com>,
+ *	       Amir Noam <amir.noam at intel dot com> and
+ *	       Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Propagating master's settings: Distinguish between modes that
+ *	  use a primary slave from those that don't, and propagate settings
+ *	  accordingly; Consolidate change_active opeartions and add
+ *	  reselect_active and find_best opeartions; Decouple promiscuous
+ *	  handling from the multicast mode setting; Add support for changing
+ *	  HW address and MTU with proper unwind; Consolidate procfs code,
+ *	  add CHANGENAME handler; Enhance netdev notification handling.
+ *	  Version to 2.4.0.
+ *
+ * 2003/09/15 - Stephen Hemminger <shemminger at osdl dot org>,
+ *	       Amir Noam <amir.noam at intel dot com>
+ *	- Convert /proc to seq_file interface.
+ *	  Change /proc/net/bondX/info to /proc/net/bonding/bondX.
+ *	  Set version to 2.4.1.
+ *
+ * 2003/11/20 - Amir Noam <amir.noam at intel dot com>
+ *	- Fix /proc creation/destruction.
+ *
+ * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Massive cleanup - Set version to 2.5.0
+ *	  Code changes:
+ *	  o Consolidate format of prints and debug prints.
+ *	  o Remove bonding_t/slave_t typedefs and consolidate all casts.
+ *	  o Remove dead code and unnecessary checks.
+ *	  o Consolidate starting/stopping timers.
+ *	  o Consolidate handling of primary module param throughout the code.
+ *	  o Removed multicast module param support - all settings are done
+ *	    according to mode.
+ *	  o Slave list iteration - bond is no longer part of the list,
+ *	    added cyclic list iteration macros.
+ *	  o Consolidate error handling in all xmit functions.
+ *	  Style changes:
+ *	  o Consolidate function naming and declarations.
+ *	  o Consolidate function params and local variables names.
+ *	  o Consolidate return values.
+ *	  o Consolidate curly braces.
+ *	  o Consolidate conditionals format.
+ *	  o Change struct member names and types.
+ *	  o Chomp trailing spaces, remove empty lines, fix indentations.
+ *	  o Re-organize code according to context.
+ *
+ * 2003/12/30 - Amir Noam <amir.noam at intel dot com>
+ *	- Fixed: Cannot remove and re-enslave the original active slave.
+ *	- Fixed: Releasing the original active slave causes mac address
+ *		 duplication.
+ *	- Add support for slaves that use ethtool_ops.
+ *	  Set version to 2.5.3.
+ *
+ * 2004/01/05 - Amir Noam <amir.noam at intel dot com>
+ *	- Save bonding parameters per bond instead of using the global values.
+ *	  Set version to 2.5.4.
+ *
+ * 2004/01/14 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Enhance VLAN support:
+ *	  * Add support for VLAN hardware acceleration capable slaves.
+ *	  * Add capability to tag self generated packets in ALB/TLB modes.
+ *	  Set version to 2.6.0.
+ * 2004/10/29 - Mitch Williams <mitch.a.williams at intel dot com>
+ *      - Fixed bug when unloading module while using 802.3ad.  If
+ *        spinlock debugging is turned on, this causes a stack dump.
+ *        Solution is to move call to dev_remove_pack outside of the
+ *        spinlock.
+ *        Set version to 2.6.1.
+ *
+ */
+
+//#define BONDING_DEBUG 1
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/socket.h>
+#include <linux/ctype.h>
+#include <linux/inet.h>
+#include <linux/bitops.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/uaccess.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <linux/rtnetlink.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/smp.h>
+#include <linux/if_ether.h>
+#include <net/arp.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/if_bonding.h>
+#include "bonding.h"
+#include "bond_3ad.h"
+#include "bond_alb.h"
+
+/*---------------------------- Module parameters ----------------------------*/
+
+/* monitor all links that often (in milliseconds). <=0 disables monitoring */
+#define BOND_LINK_MON_INTERV	0
+#define BOND_LINK_ARP_INTERV	0
+
+static int max_bonds	= BOND_DEFAULT_MAX_BONDS;
+static int miimon	= BOND_LINK_MON_INTERV;
+static int updelay	= 0;
+static int downdelay	= 0;
+static int use_carrier	= 1;
+static char *mode	= NULL;
+static char *primary	= NULL;
+static char *lacp_rate	= NULL;
+static int arp_interval = BOND_LINK_ARP_INTERV;
+static char *arp_ip_target[BOND_MAX_ARP_TARGETS] = { NULL, };
+
+module_param(max_bonds, int, 0);
+MODULE_PARM_DESC(max_bonds, "Max number of bonded devices");
+module_param(miimon, int, 0);
+MODULE_PARM_DESC(miimon, "Link check interval in milliseconds");
+module_param(updelay, int, 0);
+MODULE_PARM_DESC(updelay, "Delay before considering link up, in milliseconds");
+module_param(downdelay, int, 0);
+MODULE_PARM_DESC(downdelay, "Delay before considering link down, in milliseconds");
+module_param(use_carrier, int, 0);
+MODULE_PARM_DESC(use_carrier, "Use netif_carrier_ok (vs MII ioctls) in miimon; 0 for off, 1 for on (default)");
+module_param(mode, charp, 0);
+MODULE_PARM_DESC(mode, "Mode of operation : 0 for round robin, 1 for active-backup, 2 for xor");
+module_param(primary, charp, 0);
+MODULE_PARM_DESC(primary, "Primary network device to use");
+module_param(lacp_rate, charp, 0);
+MODULE_PARM_DESC(lacp_rate, "LACPDU tx rate to request from 802.3ad partner (slow/fast)");
+module_param(arp_interval, int, 0);
+MODULE_PARM_DESC(arp_interval, "arp interval in milliseconds");
+module_param_array(arp_ip_target, charp, NULL, 0);
+MODULE_PARM_DESC(arp_ip_target, "arp targets in n.n.n.n form");
+
+/*----------------------------- Global variables ----------------------------*/
+
+static const char *version =
+	DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n";
+
+static LIST_HEAD(bond_dev_list);
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *bond_proc_dir = NULL;
+#endif
+
+static u32 arp_target[BOND_MAX_ARP_TARGETS] = { 0, } ;
+static int arp_ip_count	= 0;
+static u32 my_ip	= 0;
+static int bond_mode	= BOND_MODE_ROUNDROBIN;
+static int lacp_fast	= 0;
+static int app_abi_ver	= 0;
+static int orig_app_abi_ver = -1; /* This is used to save the first ABI version
+				   * we receive from the application. Once set,
+				   * it won't be changed, and the module will
+				   * refuse to enslave/release interfaces if the
+				   * command comes from an application using
+				   * another ABI version.
+				   */
+
+struct bond_parm_tbl {
+	char *modename;
+	int mode;
+};
+
+static struct bond_parm_tbl bond_lacp_tbl[] = {
+{	"slow",		AD_LACP_SLOW},
+{	"fast",		AD_LACP_FAST},
+{	NULL,		-1},
+};
+
+static struct bond_parm_tbl bond_mode_tbl[] = {
+{	"balance-rr",		BOND_MODE_ROUNDROBIN},
+{	"active-backup",	BOND_MODE_ACTIVEBACKUP},
+{	"balance-xor",		BOND_MODE_XOR},
+{	"broadcast",		BOND_MODE_BROADCAST},
+{	"802.3ad",		BOND_MODE_8023AD},
+{	"balance-tlb",		BOND_MODE_TLB},
+{	"balance-alb",		BOND_MODE_ALB},
+{	NULL,			-1},
+};
+
+/*-------------------------- Forward declarations ---------------------------*/
+
+static inline void bond_set_mode_ops(struct net_device *bond_dev, int mode);
+
+/*---------------------------- General routines -----------------------------*/
+
+static const char *bond_mode_name(int mode)
+{
+	switch (mode) {
+	case BOND_MODE_ROUNDROBIN :
+		return "load balancing (round-robin)";
+	case BOND_MODE_ACTIVEBACKUP :
+		return "fault-tolerance (active-backup)";
+	case BOND_MODE_XOR :
+		return "load balancing (xor)";
+	case BOND_MODE_BROADCAST :
+		return "fault-tolerance (broadcast)";
+	case BOND_MODE_8023AD:
+		return "IEEE 802.3ad Dynamic link aggregation";
+	case BOND_MODE_TLB:
+		return "transmit load balancing";
+	case BOND_MODE_ALB:
+		return "adaptive load balancing";
+	default:
+		return "unknown";
+	}
+}
+
+/*---------------------------------- VLAN -----------------------------------*/
+
+/**
+ * bond_add_vlan - add a new vlan id on bond
+ * @bond: bond that got the notification
+ * @vlan_id: the vlan id to add
+ *
+ * Returns -ENOMEM if allocation failed.
+ */
+static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id)
+{
+	struct vlan_entry *vlan;
+
+	dprintk("bond: %s, vlan id %d\n",
+		(bond ? bond->dev->name: "None"), vlan_id);
+
+	vlan = kmalloc(sizeof(struct vlan_entry), GFP_KERNEL);
+	if (!vlan) {
+		return -ENOMEM;
+	}
+
+	INIT_LIST_HEAD(&vlan->vlan_list);
+	vlan->vlan_id = vlan_id;
+
+	write_lock_bh(&bond->lock);
+
+	list_add_tail(&vlan->vlan_list, &bond->vlan_list);
+
+	write_unlock_bh(&bond->lock);
+
+	dprintk("added VLAN ID %d on bond %s\n", vlan_id, bond->dev->name);
+
+	return 0;
+}
+
+/**
+ * bond_del_vlan - delete a vlan id from bond
+ * @bond: bond that got the notification
+ * @vlan_id: the vlan id to delete
+ *
+ * returns -ENODEV if @vlan_id was not found in @bond.
+ */
+static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id)
+{
+	struct vlan_entry *vlan, *next;
+	int res = -ENODEV;
+
+	dprintk("bond: %s, vlan id %d\n", bond->dev->name, vlan_id);
+
+	write_lock_bh(&bond->lock);
+
+	list_for_each_entry_safe(vlan, next, &bond->vlan_list, vlan_list) {
+		if (vlan->vlan_id == vlan_id) {
+			list_del(&vlan->vlan_list);
+
+			if ((bond->params.mode == BOND_MODE_TLB) ||
+			    (bond->params.mode == BOND_MODE_ALB)) {
+				bond_alb_clear_vlan(bond, vlan_id);
+			}
+
+			dprintk("removed VLAN ID %d from bond %s\n", vlan_id,
+				bond->dev->name);
+
+			kfree(vlan);
+
+			if (list_empty(&bond->vlan_list) &&
+			    (bond->slave_cnt == 0)) {
+				/* Last VLAN removed and no slaves, so
+				 * restore block on adding VLANs. This will
+				 * be removed once new slaves that are not
+				 * VLAN challenged will be added.
+				 */
+				bond->dev->features |= NETIF_F_VLAN_CHALLENGED;
+			}
+
+			res = 0;
+			goto out;
+		}
+	}
+
+	dprintk("couldn't find VLAN ID %d in bond %s\n", vlan_id,
+		bond->dev->name);
+
+out:
+	write_unlock_bh(&bond->lock);
+	return res;
+}
+
+/**
+ * bond_has_challenged_slaves
+ * @bond: the bond we're working on
+ *
+ * Searches the slave list. Returns 1 if a vlan challenged slave
+ * was found, 0 otherwise.
+ *
+ * Assumes bond->lock is held.
+ */
+static int bond_has_challenged_slaves(struct bonding *bond)
+{
+	struct slave *slave;
+	int i;
+
+	bond_for_each_slave(bond, slave, i) {
+		if (slave->dev->features & NETIF_F_VLAN_CHALLENGED) {
+			dprintk("found VLAN challenged slave - %s\n",
+				slave->dev->name);
+			return 1;
+		}
+	}
+
+	dprintk("no VLAN challenged slaves found\n");
+	return 0;
+}
+
+/**
+ * bond_next_vlan - safely skip to the next item in the vlans list.
+ * @bond: the bond we're working on
+ * @curr: item we're advancing from
+ *
+ * Returns %NULL if list is empty, bond->next_vlan if @curr is %NULL,
+ * or @curr->next otherwise (even if it is @curr itself again).
+ * 
+ * Caller must hold bond->lock
+ */
+struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr)
+{
+	struct vlan_entry *next, *last;
+
+	if (list_empty(&bond->vlan_list)) {
+		return NULL;
+	}
+
+	if (!curr) {
+		next = list_entry(bond->vlan_list.next,
+				  struct vlan_entry, vlan_list);
+	} else {
+		last = list_entry(bond->vlan_list.prev,
+				  struct vlan_entry, vlan_list);
+		if (last == curr) {
+			next = list_entry(bond->vlan_list.next,
+					  struct vlan_entry, vlan_list);
+		} else {
+			next = list_entry(curr->vlan_list.next,
+					  struct vlan_entry, vlan_list);
+		}
+	}
+
+	return next;
+}
+
+/**
+ * bond_dev_queue_xmit - Prepare skb for xmit.
+ * 
+ * @bond: bond device that got this skb for tx.
+ * @skb: hw accel VLAN tagged skb to transmit
+ * @slave_dev: slave that is supposed to xmit this skbuff
+ * 
+ * When the bond gets an skb to transmit that is
+ * already hardware accelerated VLAN tagged, and it
+ * needs to relay this skb to a slave that is not
+ * hw accel capable, the skb needs to be "unaccelerated",
+ * i.e. strip the hwaccel tag and re-insert it as part
+ * of the payload.
+ */
+int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev)
+{
+	unsigned short vlan_id;
+
+	if (!list_empty(&bond->vlan_list) &&
+	    !(slave_dev->features & NETIF_F_HW_VLAN_TX) &&
+	    vlan_get_tag(skb, &vlan_id) == 0) {
+		skb->dev = slave_dev;
+		skb = vlan_put_tag(skb, vlan_id);
+		if (!skb) {
+			/* vlan_put_tag() frees the skb in case of error,
+			 * so return success here so the calling functions
+			 * won't attempt to free is again.
+			 */
+			return 0;
+		}
+	} else {
+		skb->dev = slave_dev;
+	}
+
+	skb->priority = 1;
+	dev_queue_xmit(skb);
+
+	return 0;
+}
+
+/*
+ * In the following 3 functions, bond_vlan_rx_register(), bond_vlan_rx_add_vid
+ * and bond_vlan_rx_kill_vid, We don't protect the slave list iteration with a
+ * lock because:
+ * a. This operation is performed in IOCTL context,
+ * b. The operation is protected by the RTNL semaphore in the 8021q code,
+ * c. Holding a lock with BH disabled while directly calling a base driver
+ *    entry point is generally a BAD idea.
+ * 
+ * The design of synchronization/protection for this operation in the 8021q
+ * module is good for one or more VLAN devices over a single physical device
+ * and cannot be extended for a teaming solution like bonding, so there is a
+ * potential race condition here where a net device from the vlan group might
+ * be referenced (either by a base driver or the 8021q code) while it is being
+ * removed from the system. However, it turns out we're not making matters
+ * worse, and if it works for regular VLAN usage it will work here too.
+*/
+
+/**
+ * bond_vlan_rx_register - Propagates registration to slaves
+ * @bond_dev: bonding net device that got called
+ * @grp: vlan group being registered
+ */
+static void bond_vlan_rx_register(struct net_device *bond_dev, struct vlan_group *grp)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave;
+	int i;
+
+	bond->vlgrp = grp;
+
+	bond_for_each_slave(bond, slave, i) {
+		struct net_device *slave_dev = slave->dev;
+
+		if ((slave_dev->features & NETIF_F_HW_VLAN_RX) &&
+		    slave_dev->vlan_rx_register) {
+			slave_dev->vlan_rx_register(slave_dev, grp);
+		}
+	}
+}
+
+/**
+ * bond_vlan_rx_add_vid - Propagates adding an id to slaves
+ * @bond_dev: bonding net device that got called
+ * @vid: vlan id being added
+ */
+static void bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave;
+	int i, res;
+
+	bond_for_each_slave(bond, slave, i) {
+		struct net_device *slave_dev = slave->dev;
+
+		if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) &&
+		    slave_dev->vlan_rx_add_vid) {
+			slave_dev->vlan_rx_add_vid(slave_dev, vid);
+		}
+	}
+
+	res = bond_add_vlan(bond, vid);
+	if (res) {
+		printk(KERN_ERR DRV_NAME
+		       ": %s: Failed to add vlan id %d\n",
+		       bond_dev->name, vid);
+	}
+}
+
+/**
+ * bond_vlan_rx_kill_vid - Propagates deleting an id to slaves
+ * @bond_dev: bonding net device that got called
+ * @vid: vlan id being removed
+ */
+static void bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave;
+	struct net_device *vlan_dev;
+	int i, res;
+
+	bond_for_each_slave(bond, slave, i) {
+		struct net_device *slave_dev = slave->dev;
+
+		if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) &&
+		    slave_dev->vlan_rx_kill_vid) {
+			/* Save and then restore vlan_dev in the grp array,
+			 * since the slave's driver might clear it.
+			 */
+			vlan_dev = bond->vlgrp->vlan_devices[vid];
+			slave_dev->vlan_rx_kill_vid(slave_dev, vid);
+			bond->vlgrp->vlan_devices[vid] = vlan_dev;
+		}
+	}
+
+	res = bond_del_vlan(bond, vid);
+	if (res) {
+		printk(KERN_ERR DRV_NAME
+		       ": %s: Failed to remove vlan id %d\n",
+		       bond_dev->name, vid);
+	}
+}
+
+static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev)
+{
+	struct vlan_entry *vlan;
+
+	write_lock_bh(&bond->lock);
+
+	if (list_empty(&bond->vlan_list)) {
+		goto out;
+	}
+
+	if ((slave_dev->features & NETIF_F_HW_VLAN_RX) &&
+	    slave_dev->vlan_rx_register) {
+		slave_dev->vlan_rx_register(slave_dev, bond->vlgrp);
+	}
+
+	if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) ||
+	    !(slave_dev->vlan_rx_add_vid)) {
+		goto out;
+	}
+
+	list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
+		slave_dev->vlan_rx_add_vid(slave_dev, vlan->vlan_id);
+	}
+
+out:
+	write_unlock_bh(&bond->lock);
+}
+
+static void bond_del_vlans_from_slave(struct bonding *bond, struct net_device *slave_dev)
+{
+	struct vlan_entry *vlan;
+	struct net_device *vlan_dev;
+
+	write_lock_bh(&bond->lock);
+
+	if (list_empty(&bond->vlan_list)) {
+		goto out;
+	}
+
+	if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) ||
+	    !(slave_dev->vlan_rx_kill_vid)) {
+		goto unreg;
+	}
+
+	list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
+		/* Save and then restore vlan_dev in the grp array,
+		 * since the slave's driver might clear it.
+		 */
+		vlan_dev = bond->vlgrp->vlan_devices[vlan->vlan_id];
+		slave_dev->vlan_rx_kill_vid(slave_dev, vlan->vlan_id);
+		bond->vlgrp->vlan_devices[vlan->vlan_id] = vlan_dev;
+	}
+
+unreg:
+	if ((slave_dev->features & NETIF_F_HW_VLAN_RX) &&
+	    slave_dev->vlan_rx_register) {
+		slave_dev->vlan_rx_register(slave_dev, NULL);
+	}
+
+out:
+	write_unlock_bh(&bond->lock);
+}
+
+/*------------------------------- Link status -------------------------------*/
+
+/*
+ * Get link speed and duplex from the slave's base driver
+ * using ethtool. If for some reason the call fails or the
+ * values are invalid, fake speed and duplex to 100/Full
+ * and return error.
+ */
+static int bond_update_speed_duplex(struct slave *slave)
+{
+	struct net_device *slave_dev = slave->dev;
+	static int (* ioctl)(struct net_device *, struct ifreq *, int);
+	struct ifreq ifr;
+	struct ethtool_cmd etool;
+
+	/* Fake speed and duplex */
+	slave->speed = SPEED_100;
+	slave->duplex = DUPLEX_FULL;
+
+	if (slave_dev->ethtool_ops) {
+		u32 res;
+
+		if (!slave_dev->ethtool_ops->get_settings) {
+			return -1;
+		}
+
+		res = slave_dev->ethtool_ops->get_settings(slave_dev, &etool);
+		if (res < 0) {
+			return -1;
+		}
+
+		goto verify;
+	}
+
+	ioctl = slave_dev->do_ioctl;
+	strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ);
+	etool.cmd = ETHTOOL_GSET;
+	ifr.ifr_data = (char*)&etool;
+	if (!ioctl || (IOCTL(slave_dev, &ifr, SIOCETHTOOL) < 0)) {
+		return -1;
+	}
+
+verify:
+	switch (etool.speed) {
+	case SPEED_10:
+	case SPEED_100:
+	case SPEED_1000:
+		break;
+	default:
+		return -1;
+	}
+
+	switch (etool.duplex) {
+	case DUPLEX_FULL:
+	case DUPLEX_HALF:
+		break;
+	default:
+		return -1;
+	}
+
+	slave->speed = etool.speed;
+	slave->duplex = etool.duplex;
+
+	return 0;
+}
+
+/*
+ * if <dev> supports MII link status reporting, check its link status.
+ *
+ * We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(),
+ * depening upon the setting of the use_carrier parameter.
+ *
+ * Return either BMSR_LSTATUS, meaning that the link is up (or we
+ * can't tell and just pretend it is), or 0, meaning that the link is
+ * down.
+ *
+ * If reporting is non-zero, instead of faking link up, return -1 if
+ * both ETHTOOL and MII ioctls fail (meaning the device does not
+ * support them).  If use_carrier is set, return whatever it says.
+ * It'd be nice if there was a good way to tell if a driver supports
+ * netif_carrier, but there really isn't.
+ */
+static int bond_check_dev_link(struct bonding *bond, struct net_device *slave_dev, int reporting)
+{
+	static int (* ioctl)(struct net_device *, struct ifreq *, int);
+	struct ifreq ifr;
+	struct mii_ioctl_data *mii;
+	struct ethtool_value etool;
+
+	if (bond->params.use_carrier) {
+		return netif_carrier_ok(slave_dev) ? BMSR_LSTATUS : 0;
+	}
+
+	ioctl = slave_dev->do_ioctl;
+	if (ioctl) {
+		/* TODO: set pointer to correct ioctl on a per team member */
+		/*       bases to make this more efficient. that is, once  */
+		/*       we determine the correct ioctl, we will always    */
+		/*       call it and not the others for that team          */
+		/*       member.                                           */
+
+		/*
+		 * We cannot assume that SIOCGMIIPHY will also read a
+		 * register; not all network drivers (e.g., e100)
+		 * support that.
+		 */
+
+		/* Yes, the mii is overlaid on the ifreq.ifr_ifru */
+		strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ);
+		mii = if_mii(&ifr);
+		if (IOCTL(slave_dev, &ifr, SIOCGMIIPHY) == 0) {
+			mii->reg_num = MII_BMSR;
+			if (IOCTL(slave_dev, &ifr, SIOCGMIIREG) == 0) {
+				return (mii->val_out & BMSR_LSTATUS);
+			}
+		}
+	}
+
+	/* try SIOCETHTOOL ioctl, some drivers cache ETHTOOL_GLINK */
+	/* for a period of time so we attempt to get link status   */
+	/* from it last if the above MII ioctls fail...            */
+	if (slave_dev->ethtool_ops) {
+		if (slave_dev->ethtool_ops->get_link) {
+			u32 link;
+
+			link = slave_dev->ethtool_ops->get_link(slave_dev);
+
+			return link ? BMSR_LSTATUS : 0;
+		}
+	}
+
+	if (ioctl) {
+		strncpy(ifr.ifr_name, slave_dev->name, IFNAMSIZ);
+		etool.cmd = ETHTOOL_GLINK;
+		ifr.ifr_data = (char*)&etool;
+		if (IOCTL(slave_dev, &ifr, SIOCETHTOOL) == 0) {
+			if (etool.data == 1) {
+				return BMSR_LSTATUS;
+			} else {
+				dprintk("SIOCETHTOOL shows link down\n");
+				return 0;
+			}
+		}
+	}
+
+	/*
+	 * If reporting, report that either there's no dev->do_ioctl,
+	 * or both SIOCGMIIREG and SIOCETHTOOL failed (meaning that we
+	 * cannot report link status).  If not reporting, pretend
+	 * we're ok.
+	 */
+	return (reporting ? -1 : BMSR_LSTATUS);
+}
+
+/*----------------------------- Multicast list ------------------------------*/
+
+/*
+ * Returns 0 if dmi1 and dmi2 are the same, non-0 otherwise
+ */
+static inline int bond_is_dmi_same(struct dev_mc_list *dmi1, struct dev_mc_list *dmi2)
+{
+	return memcmp(dmi1->dmi_addr, dmi2->dmi_addr, dmi1->dmi_addrlen) == 0 &&
+			dmi1->dmi_addrlen == dmi2->dmi_addrlen;
+}
+
+/*
+ * returns dmi entry if found, NULL otherwise
+ */
+static struct dev_mc_list *bond_mc_list_find_dmi(struct dev_mc_list *dmi, struct dev_mc_list *mc_list)
+{
+	struct dev_mc_list *idmi;
+
+	for (idmi = mc_list; idmi; idmi = idmi->next) {
+		if (bond_is_dmi_same(dmi, idmi)) {
+			return idmi;
+		}
+	}
+
+	return NULL;
+}
+
+/*
+ * Push the promiscuity flag down to appropriate slaves
+ */
+static void bond_set_promiscuity(struct bonding *bond, int inc)
+{
+	if (USES_PRIMARY(bond->params.mode)) {
+		/* write lock already acquired */
+		if (bond->curr_active_slave) {
+			dev_set_promiscuity(bond->curr_active_slave->dev, inc);
+		}
+	} else {
+		struct slave *slave;
+		int i;
+		bond_for_each_slave(bond, slave, i) {
+			dev_set_promiscuity(slave->dev, inc);
+		}
+	}
+}
+
+/*
+ * Push the allmulti flag down to all slaves
+ */
+static void bond_set_allmulti(struct bonding *bond, int inc)
+{
+	if (USES_PRIMARY(bond->params.mode)) {
+		/* write lock already acquired */
+		if (bond->curr_active_slave) {
+			dev_set_allmulti(bond->curr_active_slave->dev, inc);
+		}
+	} else {
+		struct slave *slave;
+		int i;
+		bond_for_each_slave(bond, slave, i) {
+			dev_set_allmulti(slave->dev, inc);
+		}
+	}
+}
+
+/*
+ * Add a Multicast address to slaves
+ * according to mode
+ */
+static void bond_mc_add(struct bonding *bond, void *addr, int alen)
+{
+	if (USES_PRIMARY(bond->params.mode)) {
+		/* write lock already acquired */
+		if (bond->curr_active_slave) {
+			dev_mc_add(bond->curr_active_slave->dev, addr, alen, 0);
+		}
+	} else {
+		struct slave *slave;
+		int i;
+		bond_for_each_slave(bond, slave, i) {
+			dev_mc_add(slave->dev, addr, alen, 0);
+		}
+	}
+}
+
+/*
+ * Remove a multicast address from slave
+ * according to mode
+ */
+static void bond_mc_delete(struct bonding *bond, void *addr, int alen)
+{
+	if (USES_PRIMARY(bond->params.mode)) {
+		/* write lock already acquired */
+		if (bond->curr_active_slave) {
+			dev_mc_delete(bond->curr_active_slave->dev, addr, alen, 0);
+		}
+	} else {
+		struct slave *slave;
+		int i;
+		bond_for_each_slave(bond, slave, i) {
+			dev_mc_delete(slave->dev, addr, alen, 0);
+		}
+	}
+}
+
+/*
+ * Totally destroys the mc_list in bond
+ */
+static void bond_mc_list_destroy(struct bonding *bond)
+{
+	struct dev_mc_list *dmi;
+
+	dmi = bond->mc_list;
+	while (dmi) {
+		bond->mc_list = dmi->next;
+		kfree(dmi);
+		dmi = bond->mc_list;
+	}
+}
+
+/*
+ * Copy all the Multicast addresses from src to the bonding device dst
+ */
+static int bond_mc_list_copy(struct dev_mc_list *mc_list, struct bonding *bond, int gpf_flag)
+{
+	struct dev_mc_list *dmi, *new_dmi;
+
+	for (dmi = mc_list; dmi; dmi = dmi->next) {
+		new_dmi = kmalloc(sizeof(struct dev_mc_list), gpf_flag);
+
+		if (!new_dmi) {
+			/* FIXME: Potential memory leak !!! */
+			return -ENOMEM;
+		}
+
+		new_dmi->next = bond->mc_list;
+		bond->mc_list = new_dmi;
+		new_dmi->dmi_addrlen = dmi->dmi_addrlen;
+		memcpy(new_dmi->dmi_addr, dmi->dmi_addr, dmi->dmi_addrlen);
+		new_dmi->dmi_users = dmi->dmi_users;
+		new_dmi->dmi_gusers = dmi->dmi_gusers;
+	}
+
+	return 0;
+}
+
+/*
+ * flush all members of flush->mc_list from device dev->mc_list
+ */
+static void bond_mc_list_flush(struct net_device *bond_dev, struct net_device *slave_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct dev_mc_list *dmi;
+
+	for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) {
+		dev_mc_delete(slave_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
+	}
+
+	if (bond->params.mode == BOND_MODE_8023AD) {
+		/* del lacpdu mc addr from mc list */
+		u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR;
+
+		dev_mc_delete(slave_dev, lacpdu_multicast, ETH_ALEN, 0);
+	}
+}
+
+/*--------------------------- Active slave change ---------------------------*/
+
+/*
+ * Update the mc list and multicast-related flags for the new and
+ * old active slaves (if any) according to the multicast mode, and
+ * promiscuous flags unconditionally.
+ */
+static void bond_mc_swap(struct bonding *bond, struct slave *new_active, struct slave *old_active)
+{
+	struct dev_mc_list *dmi;
+
+	if (!USES_PRIMARY(bond->params.mode)) {
+		/* nothing to do -  mc list is already up-to-date on
+		 * all slaves
+		 */
+		return;
+	}
+
+	if (old_active) {
+		if (bond->dev->flags & IFF_PROMISC) {
+			dev_set_promiscuity(old_active->dev, -1);
+		}
+
+		if (bond->dev->flags & IFF_ALLMULTI) {
+			dev_set_allmulti(old_active->dev, -1);
+		}
+
+		for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) {
+			dev_mc_delete(old_active->dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
+		}
+	}
+
+	if (new_active) {
+		if (bond->dev->flags & IFF_PROMISC) {
+			dev_set_promiscuity(new_active->dev, 1);
+		}
+
+		if (bond->dev->flags & IFF_ALLMULTI) {
+			dev_set_allmulti(new_active->dev, 1);
+		}
+
+		for (dmi = bond->dev->mc_list; dmi; dmi = dmi->next) {
+			dev_mc_add(new_active->dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
+		}
+	}
+}
+
+/**
+ * find_best_interface - select the best available slave to be the active one
+ * @bond: our bonding struct
+ *
+ * Warning: Caller must hold curr_slave_lock for writing.
+ */
+static struct slave *bond_find_best_slave(struct bonding *bond)
+{
+	struct slave *new_active, *old_active;
+	struct slave *bestslave = NULL;
+	int mintime = bond->params.updelay;
+	int i;
+
+	new_active = old_active = bond->curr_active_slave;
+
+	if (!new_active) { /* there were no active slaves left */
+		if (bond->slave_cnt > 0) {  /* found one slave */
+			new_active = bond->first_slave;
+		} else {
+			return NULL; /* still no slave, return NULL */
+		}
+	}
+
+	/* first try the primary link; if arping, a link must tx/rx traffic
+	 * before it can be considered the curr_active_slave - also, we would skip
+	 * slaves between the curr_active_slave and primary_slave that may be up
+	 * and able to arp
+	 */
+	if ((bond->primary_slave) &&
+	    (!bond->params.arp_interval) &&
+	    (IS_UP(bond->primary_slave->dev))) {
+		new_active = bond->primary_slave;
+	}
+
+	/* remember where to stop iterating over the slaves */
+	old_active = new_active;
+
+	bond_for_each_slave_from(bond, new_active, i, old_active) {
+		if (IS_UP(new_active->dev)) {
+			if (new_active->link == BOND_LINK_UP) {
+				return new_active;
+			} else if (new_active->link == BOND_LINK_BACK) {
+				/* link up, but waiting for stabilization */
+				if (new_active->delay < mintime) {
+					mintime = new_active->delay;
+					bestslave = new_active;
+				}
+			}
+		}
+	}
+
+	return bestslave;
+}
+
+/**
+ * change_active_interface - change the active slave into the specified one
+ * @bond: our bonding struct
+ * @new: the new slave to make the active one
+ *
+ * Set the new slave to the bond's settings and unset them on the old
+ * curr_active_slave.
+ * Setting include flags, mc-list, promiscuity, allmulti, etc.
+ *
+ * If @new's link state is %BOND_LINK_BACK we'll set it to %BOND_LINK_UP,
+ * because it is apparently the best available slave we have, even though its
+ * updelay hasn't timed out yet.
+ *
+ * Warning: Caller must hold curr_slave_lock for writing.
+ */
+static void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
+{
+	struct slave *old_active = bond->curr_active_slave;
+
+	if (old_active == new_active) {
+		return;
+	}
+
+	if (new_active) {
+		if (new_active->link == BOND_LINK_BACK) {
+			if (USES_PRIMARY(bond->params.mode)) {
+				printk(KERN_INFO DRV_NAME
+				       ": %s: making interface %s the new "
+				       "active one %d ms earlier.\n",
+				       bond->dev->name, new_active->dev->name,
+				       (bond->params.updelay - new_active->delay) * bond->params.miimon);
+			}
+
+			new_active->delay = 0;
+			new_active->link = BOND_LINK_UP;
+			new_active->jiffies = jiffies;
+
+			if (bond->params.mode == BOND_MODE_8023AD) {
+				bond_3ad_handle_link_change(new_active, BOND_LINK_UP);
+			}
+
+			if ((bond->params.mode == BOND_MODE_TLB) ||
+			    (bond->params.mode == BOND_MODE_ALB)) {
+				bond_alb_handle_link_change(bond, new_active, BOND_LINK_UP);
+			}
+		} else {
+			if (USES_PRIMARY(bond->params.mode)) {
+				printk(KERN_INFO DRV_NAME
+				       ": %s: making interface %s the new "
+				       "active one.\n",
+				       bond->dev->name, new_active->dev->name);
+			}
+		}
+	}
+
+	if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) {
+		if (old_active) {
+			bond_set_slave_inactive_flags(old_active);
+		}
+
+		if (new_active) {
+			bond_set_slave_active_flags(new_active);
+		}
+	}
+
+	if (USES_PRIMARY(bond->params.mode)) {
+		bond_mc_swap(bond, new_active, old_active);
+	}
+
+	if ((bond->params.mode == BOND_MODE_TLB) ||
+	    (bond->params.mode == BOND_MODE_ALB)) {
+		bond_alb_handle_active_change(bond, new_active);
+	} else {
+		bond->curr_active_slave = new_active;
+	}
+}
+
+/**
+ * bond_select_active_slave - select a new active slave, if needed
+ * @bond: our bonding struct
+ *
+ * This functions shoud be called when one of the following occurs:
+ * - The old curr_active_slave has been released or lost its link.
+ * - The primary_slave has got its link back.
+ * - A slave has got its link back and there's no old curr_active_slave.
+ *
+ * Warning: Caller must hold curr_slave_lock for writing.
+ */
+static void bond_select_active_slave(struct bonding *bond)
+{
+	struct slave *best_slave;
+
+	best_slave = bond_find_best_slave(bond);
+	if (best_slave != bond->curr_active_slave) {
+		bond_change_active_slave(bond, best_slave);
+	}
+}
+
+/*--------------------------- slave list handling ---------------------------*/
+
+/*
+ * This function attaches the slave to the end of list.
+ *
+ * bond->lock held for writing by caller.
+ */
+static void bond_attach_slave(struct bonding *bond, struct slave *new_slave)
+{
+	if (bond->first_slave == NULL) { /* attaching the first slave */
+		new_slave->next = new_slave;
+		new_slave->prev = new_slave;
+		bond->first_slave = new_slave;
+	} else {
+		new_slave->next = bond->first_slave;
+		new_slave->prev = bond->first_slave->prev;
+		new_slave->next->prev = new_slave;
+		new_slave->prev->next = new_slave;
+	}
+
+	bond->slave_cnt++;
+}
+
+/*
+ * This function detaches the slave from the list.
+ * WARNING: no check is made to verify if the slave effectively
+ * belongs to <bond>.
+ * Nothing is freed on return, structures are just unchained.
+ * If any slave pointer in bond was pointing to <slave>,
+ * it should be changed by the calling function.
+ *
+ * bond->lock held for writing by caller.
+ */
+static void bond_detach_slave(struct bonding *bond, struct slave *slave)
+{
+	if (slave->next) {
+		slave->next->prev = slave->prev;
+	}
+
+	if (slave->prev) {
+		slave->prev->next = slave->next;
+	}
+
+	if (bond->first_slave == slave) { /* slave is the first slave */
+		if (bond->slave_cnt > 1) { /* there are more slave */
+			bond->first_slave = slave->next;
+		} else {
+			bond->first_slave = NULL; /* slave was the last one */
+		}
+	}
+
+	slave->next = NULL;
+	slave->prev = NULL;
+	bond->slave_cnt--;
+}
+
+/*---------------------------------- IOCTL ----------------------------------*/
+
+static int bond_sethwaddr(struct net_device *bond_dev, struct net_device *slave_dev)
+{
+	dprintk("bond_dev=%p\n", bond_dev);
+	dprintk("slave_dev=%p\n", slave_dev);
+	dprintk("slave_dev->addr_len=%d\n", slave_dev->addr_len);
+	memcpy(bond_dev->dev_addr, slave_dev->dev_addr, slave_dev->addr_len);
+	return 0;
+}
+
+/* enslave device <slave> to bond device <master> */
+static int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *new_slave = NULL;
+	struct dev_mc_list *dmi;
+	struct sockaddr addr;
+	int link_reporting;
+	int old_features = bond_dev->features;
+	int res = 0;
+
+	if (slave_dev->do_ioctl == NULL) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning : no link monitoring support for %s\n",
+		       slave_dev->name);
+	}
+
+	/* bond must be initialized by bond_open() before enslaving */
+	if (!(bond_dev->flags & IFF_UP)) {
+		dprintk("Error, master_dev is not up\n");
+		return -EPERM;
+	}
+
+	/* already enslaved */
+	if (slave_dev->flags & IFF_SLAVE) {
+		dprintk("Error, Device was already enslaved\n");
+		return -EBUSY;
+	}
+
+	/* vlan challenged mutual exclusion */
+	/* no need to lock since we're protected by rtnl_lock */
+	if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) {
+		dprintk("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name);
+		if (!list_empty(&bond->vlan_list)) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: cannot enslave VLAN "
+			       "challenged slave %s on VLAN enabled "
+			       "bond %s\n", slave_dev->name,
+			       bond_dev->name);
+			return -EPERM;
+		} else {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: enslaved VLAN challenged "
+			       "slave %s. Adding VLANs will be blocked as "
+			       "long as %s is part of bond %s\n",
+			       slave_dev->name, slave_dev->name,
+			       bond_dev->name);
+			bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
+		}
+	} else {
+		dprintk("%s: ! NETIF_F_VLAN_CHALLENGED\n", slave_dev->name);
+		if (bond->slave_cnt == 0) {
+			/* First slave, and it is not VLAN challenged,
+			 * so remove the block of adding VLANs over the bond.
+			 */
+			bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED;
+		}
+	}
+
+	if (app_abi_ver >= 1) {
+		/* The application is using an ABI, which requires the
+		 * slave interface to be closed.
+		 */
+		if ((slave_dev->flags & IFF_UP)) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: %s is up\n",
+			       slave_dev->name);
+			res = -EPERM;
+			goto err_undo_flags;
+		}
+
+		if (slave_dev->set_mac_address == NULL) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: The slave device you specified does "
+			       "not support setting the MAC address.\n");
+			printk(KERN_ERR
+			       "Your kernel likely does not support slave "
+			       "devices.\n");
+
+			res = -EOPNOTSUPP;
+			goto err_undo_flags;
+		}
+	} else {
+		/* The application is not using an ABI, which requires the
+		 * slave interface to be open.
+		 */
+		if (!(slave_dev->flags & IFF_UP)) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: %s is not running\n",
+			       slave_dev->name);
+			res = -EINVAL;
+			goto err_undo_flags;
+		}
+
+		if ((bond->params.mode == BOND_MODE_8023AD) ||
+		    (bond->params.mode == BOND_MODE_TLB)    ||
+		    (bond->params.mode == BOND_MODE_ALB)) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: to use %s mode, you must upgrade "
+			       "ifenslave.\n",
+			       bond_mode_name(bond->params.mode));
+			res = -EOPNOTSUPP;
+			goto err_undo_flags;
+		}
+	}
+
+	new_slave = kmalloc(sizeof(struct slave), GFP_KERNEL);
+	if (!new_slave) {
+		res = -ENOMEM;
+		goto err_undo_flags;
+	}
+
+	memset(new_slave, 0, sizeof(struct slave));
+
+	/* save slave's original flags before calling
+	 * netdev_set_master and dev_open
+	 */
+	new_slave->original_flags = slave_dev->flags;
+
+	if (app_abi_ver >= 1) {
+		/* save slave's original ("permanent") mac address for
+		 * modes that needs it, and for restoring it upon release,
+		 * and then set it to the master's address
+		 */
+		memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN);
+
+		/* set slave to master's mac address
+		 * The application already set the master's
+		 * mac address to that of the first slave
+		 */
+		memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len);
+		addr.sa_family = slave_dev->type;
+		res = dev_set_mac_address(slave_dev, &addr);
+		if (res) {
+			dprintk("Error %d calling set_mac_address\n", res);
+			goto err_free;
+		}
+
+		/* open the slave since the application closed it */
+		res = dev_open(slave_dev);
+		if (res) {
+			dprintk("Openning slave %s failed\n", slave_dev->name);
+			goto err_restore_mac;
+		}
+	}
+
+	res = netdev_set_master(slave_dev, bond_dev);
+	if (res) {
+		dprintk("Error %d calling netdev_set_master\n", res);
+		if (app_abi_ver < 1) {
+			goto err_free;
+		} else {
+			goto err_close;
+		}
+	}
+
+	new_slave->dev = slave_dev;
+
+	if ((bond->params.mode == BOND_MODE_TLB) ||
+	    (bond->params.mode == BOND_MODE_ALB)) {
+		/* bond_alb_init_slave() must be called before all other stages since
+		 * it might fail and we do not want to have to undo everything
+		 */
+		res = bond_alb_init_slave(bond, new_slave);
+		if (res) {
+			goto err_unset_master;
+		}
+	}
+
+	/* If the mode USES_PRIMARY, then the new slave gets the
+	 * master's promisc (and mc) settings only if it becomes the
+	 * curr_active_slave, and that is taken care of later when calling
+	 * bond_change_active()
+	 */
+	if (!USES_PRIMARY(bond->params.mode)) {
+		/* set promiscuity level to new slave */
+		if (bond_dev->flags & IFF_PROMISC) {
+			dev_set_promiscuity(slave_dev, 1);
+		}
+
+		/* set allmulti level to new slave */
+		if (bond_dev->flags & IFF_ALLMULTI) {
+			dev_set_allmulti(slave_dev, 1);
+		}
+
+		/* upload master's mc_list to new slave */
+		for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) {
+			dev_mc_add (slave_dev, dmi->dmi_addr, dmi->dmi_addrlen, 0);
+		}
+	}
+
+	if (bond->params.mode == BOND_MODE_8023AD) {
+		/* add lacpdu mc addr to mc list */
+		u8 lacpdu_multicast[ETH_ALEN] = MULTICAST_LACPDU_ADDR;
+
+		dev_mc_add(slave_dev, lacpdu_multicast, ETH_ALEN, 0);
+	}
+
+	bond_add_vlans_on_slave(bond, slave_dev);
+
+	write_lock_bh(&bond->lock);
+
+	bond_attach_slave(bond, new_slave);
+
+	new_slave->delay = 0;
+	new_slave->link_failure_count = 0;
+
+	if (bond->params.miimon && !bond->params.use_carrier) {
+		link_reporting = bond_check_dev_link(bond, slave_dev, 1);
+
+		if ((link_reporting == -1) && !bond->params.arp_interval) {
+			/*
+			 * miimon is set but a bonded network driver
+			 * does not support ETHTOOL/MII and
+			 * arp_interval is not set.  Note: if
+			 * use_carrier is enabled, we will never go
+			 * here (because netif_carrier is always
+			 * supported); thus, we don't need to change
+			 * the messages for netif_carrier.
+			 */
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: MII and ETHTOOL support not "
+			       "available for interface %s, and "
+			       "arp_interval/arp_ip_target module parameters "
+			       "not specified, thus bonding will not detect "
+			       "link failures! see bonding.txt for details.\n",
+			       slave_dev->name);
+		} else if (link_reporting == -1) {
+			/* unable get link status using mii/ethtool */
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: can't get link status from "
+			       "interface %s; the network driver associated "
+			       "with this interface does not support MII or "
+			       "ETHTOOL link status reporting, thus miimon "
+			       "has no effect on this interface.\n",
+			       slave_dev->name);
+		}
+	}
+
+	/* check for initial state */
+	if (!bond->params.miimon ||
+	    (bond_check_dev_link(bond, slave_dev, 0) == BMSR_LSTATUS)) {
+		if (bond->params.updelay) {
+			dprintk("Initial state of slave_dev is "
+				"BOND_LINK_BACK\n");
+			new_slave->link  = BOND_LINK_BACK;
+			new_slave->delay = bond->params.updelay;
+		} else {
+			dprintk("Initial state of slave_dev is "
+				"BOND_LINK_UP\n");
+			new_slave->link  = BOND_LINK_UP;
+		}
+		new_slave->jiffies = jiffies;
+	} else {
+		dprintk("Initial state of slave_dev is "
+			"BOND_LINK_DOWN\n");
+		new_slave->link  = BOND_LINK_DOWN;
+	}
+
+	if (bond_update_speed_duplex(new_slave) &&
+	    (new_slave->link != BOND_LINK_DOWN)) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: failed to get speed and duplex from %s, "
+		       "assumed to be 100Mb/sec and Full.\n",
+		       new_slave->dev->name);
+
+		if (bond->params.mode == BOND_MODE_8023AD) {
+			printk(KERN_WARNING
+			       "Operation of 802.3ad mode requires ETHTOOL "
+			       "support in base driver for proper aggregator "
+			       "selection.\n");
+		}
+	}
+
+	if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) {
+		/* if there is a primary slave, remember it */
+		if (strcmp(bond->params.primary, new_slave->dev->name) == 0) {
+			bond->primary_slave = new_slave;
+		}
+	}
+
+	switch (bond->params.mode) {
+	case BOND_MODE_ACTIVEBACKUP:
+		/* if we're in active-backup mode, we need one and only one active
+		 * interface. The backup interfaces will have their NOARP flag set
+		 * because we need them to be completely deaf and not to respond to
+		 * any ARP request on the network to avoid fooling a switch. Thus,
+		 * since we guarantee that curr_active_slave always point to the last
+		 * usable interface, we just have to verify this interface's flag.
+		 */
+		if (((!bond->curr_active_slave) ||
+		     (bond->curr_active_slave->dev->flags & IFF_NOARP)) &&
+		    (new_slave->link != BOND_LINK_DOWN)) {
+			dprintk("This is the first active slave\n");
+			/* first slave or no active slave yet, and this link
+			   is OK, so make this interface the active one */
+			bond_change_active_slave(bond, new_slave);
+		} else {
+			dprintk("This is just a backup slave\n");
+			bond_set_slave_inactive_flags(new_slave);
+		}
+		break;
+	case BOND_MODE_8023AD:
+		/* in 802.3ad mode, the internal mechanism
+		 * will activate the slaves in the selected
+		 * aggregator
+		 */
+		bond_set_slave_inactive_flags(new_slave);
+		/* if this is the first slave */
+		if (bond->slave_cnt == 1) {
+			SLAVE_AD_INFO(new_slave).id = 1;
+			/* Initialize AD with the number of times that the AD timer is called in 1 second
+			 * can be called only after the mac address of the bond is set
+			 */
+			bond_3ad_initialize(bond, 1000/AD_TIMER_INTERVAL,
+					    bond->params.lacp_fast);
+		} else {
+			SLAVE_AD_INFO(new_slave).id =
+				SLAVE_AD_INFO(new_slave->prev).id + 1;
+		}
+
+		bond_3ad_bind_slave(new_slave);
+		break;
+	case BOND_MODE_TLB:
+	case BOND_MODE_ALB:
+		new_slave->state = BOND_STATE_ACTIVE;
+		if ((!bond->curr_active_slave) &&
+		    (new_slave->link != BOND_LINK_DOWN)) {
+			/* first slave or no active slave yet, and this link
+			 * is OK, so make this interface the active one
+			 */
+			bond_change_active_slave(bond, new_slave);
+		}
+		break;
+	default:
+		dprintk("This slave is always active in trunk mode\n");
+
+		/* always active in trunk mode */
+		new_slave->state = BOND_STATE_ACTIVE;
+
+		/* In trunking mode there is little meaning to curr_active_slave
+		 * anyway (it holds no special properties of the bond device),
+		 * so we can change it without calling change_active_interface()
+		 */
+		if (!bond->curr_active_slave) {
+			bond->curr_active_slave = new_slave;
+		}
+		break;
+	} /* switch(bond_mode) */
+
+	write_unlock_bh(&bond->lock);
+
+	if (app_abi_ver < 1) {
+		/*
+		 * !!! This is to support old versions of ifenslave.
+		 * We can remove this in 2.5 because our ifenslave takes
+		 * care of this for us.
+		 * We check to see if the master has a mac address yet.
+		 * If not, we'll give it the mac address of our slave device.
+		 */
+		int ndx = 0;
+
+		for (ndx = 0; ndx < bond_dev->addr_len; ndx++) {
+			dprintk("Checking ndx=%d of bond_dev->dev_addr\n",
+				ndx);
+			if (bond_dev->dev_addr[ndx] != 0) {
+				dprintk("Found non-zero byte at ndx=%d\n",
+					ndx);
+				break;
+			}
+		}
+
+		if (ndx == bond_dev->addr_len) {
+			/*
+			 * We got all the way through the address and it was
+			 * all 0's.
+			 */
+			dprintk("%s doesn't have a MAC address yet.  \n",
+				bond_dev->name);
+			dprintk("Going to give assign it from %s.\n",
+				slave_dev->name);
+			bond_sethwaddr(bond_dev, slave_dev);
+		}
+	}
+
+	printk(KERN_INFO DRV_NAME
+	       ": %s: enslaving %s as a%s interface with a%s link.\n",
+	       bond_dev->name, slave_dev->name,
+	       new_slave->state == BOND_STATE_ACTIVE ? "n active" : " backup",
+	       new_slave->link != BOND_LINK_DOWN ? "n up" : " down");
+
+	/* enslave is successful */
+	return 0;
+
+/* Undo stages on error */
+err_unset_master:
+	netdev_set_master(slave_dev, NULL);
+
+err_close:
+	dev_close(slave_dev);
+
+err_restore_mac:
+	memcpy(addr.sa_data, new_slave->perm_hwaddr, ETH_ALEN);
+	addr.sa_family = slave_dev->type;
+	dev_set_mac_address(slave_dev, &addr);
+
+err_free:
+	kfree(new_slave);
+
+err_undo_flags:
+	bond_dev->features = old_features;
+
+	return res;
+}
+
+/*
+ * Try to release the slave device <slave> from the bond device <master>
+ * It is legal to access curr_active_slave without a lock because all the function
+ * is write-locked.
+ *
+ * The rules for slave state should be:
+ *   for Active/Backup:
+ *     Active stays on all backups go down
+ *   for Bonded connections:
+ *     The first up interface should be left on and all others downed.
+ */
+static int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave, *oldcurrent;
+	struct sockaddr addr;
+	int mac_addr_differ;
+
+	/* slave is not a slave or master is not master of this slave */
+	if (!(slave_dev->flags & IFF_SLAVE) ||
+	    (slave_dev->master != bond_dev)) {
+		printk(KERN_ERR DRV_NAME
+		       ": Error: %s: cannot release %s.\n",
+		       bond_dev->name, slave_dev->name);
+		return -EINVAL;
+	}
+
+	write_lock_bh(&bond->lock);
+
+	slave = bond_get_slave_by_dev(bond, slave_dev);
+	if (!slave) {
+		/* not a slave of this bond */
+		printk(KERN_INFO DRV_NAME
+		       ": %s: %s not enslaved\n",
+		       bond_dev->name, slave_dev->name);
+		return -EINVAL;
+	}
+
+	mac_addr_differ = memcmp(bond_dev->dev_addr,
+				 slave->perm_hwaddr,
+				 ETH_ALEN);
+	if (!mac_addr_differ && (bond->slave_cnt > 1)) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: the permanent HWaddr of %s "
+		       "- %02X:%02X:%02X:%02X:%02X:%02X - is "
+		       "still in use by %s. Set the HWaddr of "
+		       "%s to a different address to avoid "
+		       "conflicts.\n",
+		       slave_dev->name,
+		       slave->perm_hwaddr[0],
+		       slave->perm_hwaddr[1],
+		       slave->perm_hwaddr[2],
+		       slave->perm_hwaddr[3],
+		       slave->perm_hwaddr[4],
+		       slave->perm_hwaddr[5],
+		       bond_dev->name,
+		       slave_dev->name);
+	}
+
+	/* Inform AD package of unbinding of slave. */
+	if (bond->params.mode == BOND_MODE_8023AD) {
+		/* must be called before the slave is
+		 * detached from the list
+		 */
+		bond_3ad_unbind_slave(slave);
+	}
+
+	printk(KERN_INFO DRV_NAME
+	       ": %s: releasing %s interface %s\n",
+	       bond_dev->name,
+	       (slave->state == BOND_STATE_ACTIVE)
+	       ? "active" : "backup",
+	       slave_dev->name);
+
+	oldcurrent = bond->curr_active_slave;
+
+	bond->current_arp_slave = NULL;
+
+	/* release the slave from its bond */
+	bond_detach_slave(bond, slave);
+
+	if (bond->primary_slave == slave) {
+		bond->primary_slave = NULL;
+	}
+
+	if (oldcurrent == slave) {
+		bond_change_active_slave(bond, NULL);
+	}
+
+	if ((bond->params.mode == BOND_MODE_TLB) ||
+	    (bond->params.mode == BOND_MODE_ALB)) {
+		/* Must be called only after the slave has been
+		 * detached from the list and the curr_active_slave
+		 * has been cleared (if our_slave == old_current),
+		 * but before a new active slave is selected.
+		 */
+		bond_alb_deinit_slave(bond, slave);
+	}
+
+	if (oldcurrent == slave) {
+		bond_select_active_slave(bond);
+
+		if (!bond->curr_active_slave) {
+			printk(KERN_INFO DRV_NAME
+			       ": %s: now running without any active "
+			       "interface !\n",
+			       bond_dev->name);
+		}
+	}
+
+	if (bond->slave_cnt == 0) {
+		/* if the last slave was removed, zero the mac address
+		 * of the master so it will be set by the application
+		 * to the mac address of the first slave
+		 */
+		memset(bond_dev->dev_addr, 0, bond_dev->addr_len);
+
+		if (list_empty(&bond->vlan_list)) {
+			bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
+		} else {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: clearing HW address of %s while it "
+			       "still has VLANs.\n",
+			       bond_dev->name);
+			printk(KERN_WARNING DRV_NAME
+			       ": When re-adding slaves, make sure the bond's "
+			       "HW address matches its VLANs'.\n");
+		}
+	} else if ((bond_dev->features & NETIF_F_VLAN_CHALLENGED) &&
+		   !bond_has_challenged_slaves(bond)) {
+		printk(KERN_INFO DRV_NAME
+		       ": last VLAN challenged slave %s "
+		       "left bond %s. VLAN blocking is removed\n",
+		       slave_dev->name, bond_dev->name);
+		bond_dev->features &= ~NETIF_F_VLAN_CHALLENGED;
+	}
+
+	write_unlock_bh(&bond->lock);
+
+	bond_del_vlans_from_slave(bond, slave_dev);
+
+	/* If the mode USES_PRIMARY, then we should only remove its
+	 * promisc and mc settings if it was the curr_active_slave, but that was
+	 * already taken care of above when we detached the slave
+	 */
+	if (!USES_PRIMARY(bond->params.mode)) {
+		/* unset promiscuity level from slave */
+		if (bond_dev->flags & IFF_PROMISC) {
+			dev_set_promiscuity(slave_dev, -1);
+		}
+
+		/* unset allmulti level from slave */
+		if (bond_dev->flags & IFF_ALLMULTI) {
+			dev_set_allmulti(slave_dev, -1);
+		}
+
+		/* flush master's mc_list from slave */
+		bond_mc_list_flush(bond_dev, slave_dev);
+	}
+
+	netdev_set_master(slave_dev, NULL);
+
+	/* close slave before restoring its mac address */
+	dev_close(slave_dev);
+
+	if (app_abi_ver >= 1) {
+		/* restore original ("permanent") mac address */
+		memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN);
+		addr.sa_family = slave_dev->type;
+		dev_set_mac_address(slave_dev, &addr);
+	}
+
+	/* restore the original state of the
+	 * IFF_NOARP flag that might have been
+	 * set by bond_set_slave_inactive_flags()
+	 */
+	if ((slave->original_flags & IFF_NOARP) == 0) {
+		slave_dev->flags &= ~IFF_NOARP;
+	}
+
+	kfree(slave);
+
+	return 0;  /* deletion OK */
+}
+
+/*
+ * This function releases all slaves.
+ */
+static int bond_release_all(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave;
+	struct net_device *slave_dev;
+	struct sockaddr addr;
+
+	write_lock_bh(&bond->lock);
+
+	if (bond->slave_cnt == 0) {
+		goto out;
+	}
+
+	bond->current_arp_slave = NULL;
+	bond->primary_slave = NULL;
+	bond_change_active_slave(bond, NULL);
+
+	while ((slave = bond->first_slave) != NULL) {
+		/* Inform AD package of unbinding of slave
+		 * before slave is detached from the list.
+		 */
+		if (bond->params.mode == BOND_MODE_8023AD) {
+			bond_3ad_unbind_slave(slave);
+		}
+
+		slave_dev = slave->dev;
+		bond_detach_slave(bond, slave);
+
+		if ((bond->params.mode == BOND_MODE_TLB) ||
+		    (bond->params.mode == BOND_MODE_ALB)) {
+			/* must be called only after the slave
+			 * has been detached from the list
+			 */
+			bond_alb_deinit_slave(bond, slave);
+		}
+
+		/* now that the slave is detached, unlock and perform
+		 * all the undo steps that should not be called from
+		 * within a lock.
+		 */
+		write_unlock_bh(&bond->lock);
+
+		bond_del_vlans_from_slave(bond, slave_dev);
+
+		/* If the mode USES_PRIMARY, then we should only remove its
+		 * promisc and mc settings if it was the curr_active_slave, but that was
+		 * already taken care of above when we detached the slave
+		 */
+		if (!USES_PRIMARY(bond->params.mode)) {
+			/* unset promiscuity level from slave */
+			if (bond_dev->flags & IFF_PROMISC) {
+				dev_set_promiscuity(slave_dev, -1);
+			}
+
+			/* unset allmulti level from slave */
+			if (bond_dev->flags & IFF_ALLMULTI) {
+				dev_set_allmulti(slave_dev, -1);
+			}
+
+			/* flush master's mc_list from slave */
+			bond_mc_list_flush(bond_dev, slave_dev);
+		}
+
+		netdev_set_master(slave_dev, NULL);
+
+		/* close slave before restoring its mac address */
+		dev_close(slave_dev);
+
+		if (app_abi_ver >= 1) {
+			/* restore original ("permanent") mac address*/
+			memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN);
+			addr.sa_family = slave_dev->type;
+			dev_set_mac_address(slave_dev, &addr);
+		}
+
+		/* restore the original state of the IFF_NOARP flag that might have
+		 * been set by bond_set_slave_inactive_flags()
+		 */
+		if ((slave->original_flags & IFF_NOARP) == 0) {
+			slave_dev->flags &= ~IFF_NOARP;
+		}
+
+		kfree(slave);
+
+		/* re-acquire the lock before getting the next slave */
+		write_lock_bh(&bond->lock);
+	}
+
+	/* zero the mac address of the master so it will be
+	 * set by the application to the mac address of the
+	 * first slave
+	 */
+	memset(bond_dev->dev_addr, 0, bond_dev->addr_len);
+
+	if (list_empty(&bond->vlan_list)) {
+		bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
+	} else {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: clearing HW address of %s while it "
+		       "still has VLANs.\n",
+		       bond_dev->name);
+		printk(KERN_WARNING DRV_NAME
+		       ": When re-adding slaves, make sure the bond's "
+		       "HW address matches its VLANs'.\n");
+	}
+
+	printk(KERN_INFO DRV_NAME
+	       ": %s: released all slaves\n",
+	       bond_dev->name);
+
+out:
+	write_unlock_bh(&bond->lock);
+
+	return 0;
+}
+
+/*
+ * This function changes the active slave to slave <slave_dev>.
+ * It returns -EINVAL in the following cases.
+ *  - <slave_dev> is not found in the list.
+ *  - There is not active slave now.
+ *  - <slave_dev> is already active.
+ *  - The link state of <slave_dev> is not BOND_LINK_UP.
+ *  - <slave_dev> is not running.
+ * In these cases, this fuction does nothing.
+ * In the other cases, currnt_slave pointer is changed and 0 is returned.
+ */
+static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_device *slave_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *old_active = NULL;
+	struct slave *new_active = NULL;
+	int res = 0;
+
+	if (!USES_PRIMARY(bond->params.mode)) {
+		return -EINVAL;
+	}
+
+	/* Verify that master_dev is indeed the master of slave_dev */
+	if (!(slave_dev->flags & IFF_SLAVE) ||
+	    (slave_dev->master != bond_dev)) {
+		return -EINVAL;
+	}
+
+	write_lock_bh(&bond->lock);
+
+	old_active = bond->curr_active_slave;
+	new_active = bond_get_slave_by_dev(bond, slave_dev);
+
+	/*
+	 * Changing to the current active: do nothing; return success.
+	 */
+	if (new_active && (new_active == old_active)) {
+		write_unlock_bh(&bond->lock);
+		return 0;
+	}
+
+	if ((new_active) &&
+	    (old_active) &&
+	    (new_active->link == BOND_LINK_UP) &&
+	    IS_UP(new_active->dev)) {
+		bond_change_active_slave(bond, new_active);
+	} else {
+		res = -EINVAL;
+	}
+
+	write_unlock_bh(&bond->lock);
+
+	return res;
+}
+
+static int bond_ethtool_ioctl(struct net_device *bond_dev, struct ifreq *ifr)
+{
+	struct ethtool_drvinfo info;
+	void __user *addr = ifr->ifr_data;
+	uint32_t cmd;
+
+	if (get_user(cmd, (uint32_t __user *)addr)) {
+		return -EFAULT;
+	}
+
+	switch (cmd) {
+	case ETHTOOL_GDRVINFO:
+		if (copy_from_user(&info, addr, sizeof(info))) {
+			return -EFAULT;
+		}
+
+		if (strcmp(info.driver, "ifenslave") == 0) {
+			int new_abi_ver;
+			char *endptr;
+
+			new_abi_ver = simple_strtoul(info.fw_version,
+						     &endptr, 0);
+			if (*endptr) {
+				printk(KERN_ERR DRV_NAME
+				       ": Error: got invalid ABI "
+				       "version from application\n");
+
+				return -EINVAL;
+			}
+
+			if (orig_app_abi_ver == -1) {
+				orig_app_abi_ver  = new_abi_ver;
+			}
+
+			app_abi_ver = new_abi_ver;
+		}
+
+		strncpy(info.driver,  DRV_NAME, 32);
+		strncpy(info.version, DRV_VERSION, 32);
+		snprintf(info.fw_version, 32, "%d", BOND_ABI_VERSION);
+
+		if (copy_to_user(addr, &info, sizeof(info))) {
+			return -EFAULT;
+		}
+
+		return 0;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int bond_info_query(struct net_device *bond_dev, struct ifbond *info)
+{
+	struct bonding *bond = bond_dev->priv;
+
+	info->bond_mode = bond->params.mode;
+	info->miimon = bond->params.miimon;
+
+	read_lock_bh(&bond->lock);
+	info->num_slaves = bond->slave_cnt;
+	read_unlock_bh(&bond->lock);
+
+	return 0;
+}
+
+static int bond_slave_info_query(struct net_device *bond_dev, struct ifslave *info)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave;
+	int i, found = 0;
+
+	if (info->slave_id < 0) {
+		return -ENODEV;
+	}
+
+	read_lock_bh(&bond->lock);
+
+	bond_for_each_slave(bond, slave, i) {
+		if (i == (int)info->slave_id) {
+			found = 1;
+			break;
+		}
+	}
+
+	read_unlock_bh(&bond->lock);
+
+	if (found) {
+		strcpy(info->slave_name, slave->dev->name);
+		info->link = slave->link;
+		info->state = slave->state;
+		info->link_failure_count = slave->link_failure_count;
+	} else {
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+/*-------------------------------- Monitoring -------------------------------*/
+
+/* this function is called regularly to monitor each slave's link. */
+static void bond_mii_monitor(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave, *oldcurrent;
+	int do_failover = 0;
+	int delta_in_ticks;
+	int i;
+
+	read_lock(&bond->lock);
+
+	delta_in_ticks = (bond->params.miimon * HZ) / 1000;
+
+	if (bond->kill_timers) {
+		goto out;
+	}
+
+	if (bond->slave_cnt == 0) {
+		goto re_arm;
+	}
+
+	/* we will try to read the link status of each of our slaves, and
+	 * set their IFF_RUNNING flag appropriately. For each slave not
+	 * supporting MII status, we won't do anything so that a user-space
+	 * program could monitor the link itself if needed.
+	 */
+
+	read_lock(&bond->curr_slave_lock);
+	oldcurrent = bond->curr_active_slave;
+	read_unlock(&bond->curr_slave_lock);
+
+	bond_for_each_slave(bond, slave, i) {
+		struct net_device *slave_dev = slave->dev;
+		int link_state;
+		u16 old_speed = slave->speed;
+		u8 old_duplex = slave->duplex;
+
+		link_state = bond_check_dev_link(bond, slave_dev, 0);
+
+		switch (slave->link) {
+		case BOND_LINK_UP:	/* the link was up */
+			if (link_state == BMSR_LSTATUS) {
+				/* link stays up, nothing more to do */
+				break;
+			} else { /* link going down */
+				slave->link  = BOND_LINK_FAIL;
+				slave->delay = bond->params.downdelay;
+
+				if (slave->link_failure_count < UINT_MAX) {
+					slave->link_failure_count++;
+				}
+
+				if (bond->params.downdelay) {
+					printk(KERN_INFO DRV_NAME
+					       ": %s: link status down for %s "
+					       "interface %s, disabling it in "
+					       "%d ms.\n",
+					       bond_dev->name,
+					       IS_UP(slave_dev)
+					       ? ((bond->params.mode == BOND_MODE_ACTIVEBACKUP)
+						  ? ((slave == oldcurrent)
+						     ? "active " : "backup ")
+						  : "")
+					       : "idle ",
+					       slave_dev->name,
+					       bond->params.downdelay * bond->params.miimon);
+				}
+			}
+			/* no break ! fall through the BOND_LINK_FAIL test to
+			   ensure proper action to be taken
+			*/
+		case BOND_LINK_FAIL:	/* the link has just gone down */
+			if (link_state != BMSR_LSTATUS) {
+				/* link stays down */
+				if (slave->delay <= 0) {
+					/* link down for too long time */
+					slave->link = BOND_LINK_DOWN;
+
+					/* in active/backup mode, we must
+					 * completely disable this interface
+					 */
+					if ((bond->params.mode == BOND_MODE_ACTIVEBACKUP) ||
+					    (bond->params.mode == BOND_MODE_8023AD)) {
+						bond_set_slave_inactive_flags(slave);
+					}
+
+					printk(KERN_INFO DRV_NAME
+					       ": %s: link status definitely "
+					       "down for interface %s, "
+					       "disabling it\n",
+					       bond_dev->name,
+					       slave_dev->name);
+
+					/* notify ad that the link status has changed */
+					if (bond->params.mode == BOND_MODE_8023AD) {
+						bond_3ad_handle_link_change(slave, BOND_LINK_DOWN);
+					}
+
+					if ((bond->params.mode == BOND_MODE_TLB) ||
+					    (bond->params.mode == BOND_MODE_ALB)) {
+						bond_alb_handle_link_change(bond, slave, BOND_LINK_DOWN);
+					}
+
+					if (slave == oldcurrent) {
+						do_failover = 1;
+					}
+				} else {
+					slave->delay--;
+				}
+			} else {
+				/* link up again */
+				slave->link  = BOND_LINK_UP;
+				slave->jiffies = jiffies;
+				printk(KERN_INFO DRV_NAME
+				       ": %s: link status up again after %d "
+				       "ms for interface %s.\n",
+				       bond_dev->name,
+				       (bond->params.downdelay - slave->delay) * bond->params.miimon,
+				       slave_dev->name);
+			}
+			break;
+		case BOND_LINK_DOWN:	/* the link was down */
+			if (link_state != BMSR_LSTATUS) {
+				/* the link stays down, nothing more to do */
+				break;
+			} else {	/* link going up */
+				slave->link  = BOND_LINK_BACK;
+				slave->delay = bond->params.updelay;
+
+				if (bond->params.updelay) {
+					/* if updelay == 0, no need to
+					   advertise about a 0 ms delay */
+					printk(KERN_INFO DRV_NAME
+					       ": %s: link status up for "
+					       "interface %s, enabling it "
+					       "in %d ms.\n",
+					       bond_dev->name,
+					       slave_dev->name,
+					       bond->params.updelay * bond->params.miimon);
+				}
+			}
+			/* no break ! fall through the BOND_LINK_BACK state in
+			   case there's something to do.
+			*/
+		case BOND_LINK_BACK:	/* the link has just come back */
+			if (link_state != BMSR_LSTATUS) {
+				/* link down again */
+				slave->link  = BOND_LINK_DOWN;
+
+				printk(KERN_INFO DRV_NAME
+				       ": %s: link status down again after %d "
+				       "ms for interface %s.\n",
+				       bond_dev->name,
+				       (bond->params.updelay - slave->delay) * bond->params.miimon,
+				       slave_dev->name);
+			} else {
+				/* link stays up */
+				if (slave->delay == 0) {
+					/* now the link has been up for long time enough */
+					slave->link = BOND_LINK_UP;
+					slave->jiffies = jiffies;
+
+					if (bond->params.mode == BOND_MODE_8023AD) {
+						/* prevent it from being the active one */
+						slave->state = BOND_STATE_BACKUP;
+					} else if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) {
+						/* make it immediately active */
+						slave->state = BOND_STATE_ACTIVE;
+					} else if (slave != bond->primary_slave) {
+						/* prevent it from being the active one */
+						slave->state = BOND_STATE_BACKUP;
+					}
+
+					printk(KERN_INFO DRV_NAME
+					       ": %s: link status definitely "
+					       "up for interface %s.\n",
+					       bond_dev->name,
+					       slave_dev->name);
+
+					/* notify ad that the link status has changed */
+					if (bond->params.mode == BOND_MODE_8023AD) {
+						bond_3ad_handle_link_change(slave, BOND_LINK_UP);
+					}
+
+					if ((bond->params.mode == BOND_MODE_TLB) ||
+					    (bond->params.mode == BOND_MODE_ALB)) {
+						bond_alb_handle_link_change(bond, slave, BOND_LINK_UP);
+					}
+
+					if ((!oldcurrent) ||
+					    (slave == bond->primary_slave)) {
+						do_failover = 1;
+					}
+				} else {
+					slave->delay--;
+				}
+			}
+			break;
+		default:
+			/* Should not happen */
+			printk(KERN_ERR "bonding: Error: %s  Illegal value (link=%d)\n",
+			       slave->dev->name, slave->link);
+			goto out;
+		} /* end of switch (slave->link) */
+
+		bond_update_speed_duplex(slave);
+
+		if (bond->params.mode == BOND_MODE_8023AD) {
+			if (old_speed != slave->speed) {
+				bond_3ad_adapter_speed_changed(slave);
+			}
+
+			if (old_duplex != slave->duplex) {
+				bond_3ad_adapter_duplex_changed(slave);
+			}
+		}
+
+	} /* end of for */
+
+	if (do_failover) {
+		write_lock(&bond->curr_slave_lock);
+
+		bond_select_active_slave(bond);
+
+		if (oldcurrent && !bond->curr_active_slave) {
+			printk(KERN_INFO DRV_NAME
+			       ": %s: now running without any active "
+			       "interface !\n",
+			       bond_dev->name);
+		}
+
+		write_unlock(&bond->curr_slave_lock);
+	}
+
+re_arm:
+	if (bond->params.miimon) {
+		mod_timer(&bond->mii_timer, jiffies + delta_in_ticks);
+	}
+out:
+	read_unlock(&bond->lock);
+}
+
+static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
+{
+	int i;
+	u32 *targets = bond->params.arp_targets;
+
+	for (i = 0; (i < BOND_MAX_ARP_TARGETS) && targets[i]; i++) {
+		arp_send(ARPOP_REQUEST, ETH_P_ARP, targets[i], slave->dev,
+			 my_ip, NULL, slave->dev->dev_addr,
+			 NULL);
+	}
+}
+
+/*
+ * this function is called regularly to monitor each slave's link
+ * ensuring that traffic is being sent and received when arp monitoring
+ * is used in load-balancing mode. if the adapter has been dormant, then an
+ * arp is transmitted to generate traffic. see activebackup_arp_monitor for
+ * arp monitoring in active backup mode.
+ */
+static void bond_loadbalance_arp_mon(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave, *oldcurrent;
+	int do_failover = 0;
+	int delta_in_ticks;
+	int i;
+
+	read_lock(&bond->lock);
+
+	delta_in_ticks = (bond->params.arp_interval * HZ) / 1000;
+
+	if (bond->kill_timers) {
+		goto out;
+	}
+
+	if (bond->slave_cnt == 0) {
+		goto re_arm;
+	}
+
+	read_lock(&bond->curr_slave_lock);
+	oldcurrent = bond->curr_active_slave;
+	read_unlock(&bond->curr_slave_lock);
+
+	/* see if any of the previous devices are up now (i.e. they have
+	 * xmt and rcv traffic). the curr_active_slave does not come into
+	 * the picture unless it is null. also, slave->jiffies is not needed
+	 * here because we send an arp on each slave and give a slave as
+	 * long as it needs to get the tx/rx within the delta.
+	 * TODO: what about up/down delay in arp mode? it wasn't here before
+	 *       so it can wait
+	 */
+	bond_for_each_slave(bond, slave, i) {
+		if (slave->link != BOND_LINK_UP) {
+			if (((jiffies - slave->dev->trans_start) <= delta_in_ticks) &&
+			    ((jiffies - slave->dev->last_rx) <= delta_in_ticks)) {
+
+				slave->link  = BOND_LINK_UP;
+				slave->state = BOND_STATE_ACTIVE;
+
+				/* primary_slave has no meaning in round-robin
+				 * mode. the window of a slave being up and
+				 * curr_active_slave being null after enslaving
+				 * is closed.
+				 */
+				if (!oldcurrent) {
+					printk(KERN_INFO DRV_NAME
+					       ": %s: link status definitely "
+					       "up for interface %s, ",
+					       bond_dev->name,
+					       slave->dev->name);
+					do_failover = 1;
+				} else {
+					printk(KERN_INFO DRV_NAME
+					       ": %s: interface %s is now up\n",
+					       bond_dev->name,
+					       slave->dev->name);
+				}
+			}
+		} else {
+			/* slave->link == BOND_LINK_UP */
+
+			/* not all switches will respond to an arp request
+			 * when the source ip is 0, so don't take the link down
+			 * if we don't know our ip yet
+			 */
+			if (((jiffies - slave->dev->trans_start) >= (2*delta_in_ticks)) ||
+			    (((jiffies - slave->dev->last_rx) >= (2*delta_in_ticks)) &&
+			     my_ip)) {
+
+				slave->link  = BOND_LINK_DOWN;
+				slave->state = BOND_STATE_BACKUP;
+
+				if (slave->link_failure_count < UINT_MAX) {
+					slave->link_failure_count++;
+				}
+
+				printk(KERN_INFO DRV_NAME
+				       ": %s: interface %s is now down.\n",
+				       bond_dev->name,
+				       slave->dev->name);
+
+				if (slave == oldcurrent) {
+					do_failover = 1;
+				}
+			}
+		}
+
+		/* note: if switch is in round-robin mode, all links
+		 * must tx arp to ensure all links rx an arp - otherwise
+		 * links may oscillate or not come up at all; if switch is
+		 * in something like xor mode, there is nothing we can
+		 * do - all replies will be rx'ed on same link causing slaves
+		 * to be unstable during low/no traffic periods
+		 */
+		if (IS_UP(slave->dev)) {
+			bond_arp_send_all(bond, slave);
+		}
+	}
+
+	if (do_failover) {
+		write_lock(&bond->curr_slave_lock);
+
+		bond_select_active_slave(bond);
+
+		if (oldcurrent && !bond->curr_active_slave) {
+			printk(KERN_INFO DRV_NAME
+			       ": %s: now running without any active "
+			       "interface !\n",
+			       bond_dev->name);
+		}
+
+		write_unlock(&bond->curr_slave_lock);
+	}
+
+re_arm:
+	if (bond->params.arp_interval) {
+		mod_timer(&bond->arp_timer, jiffies + delta_in_ticks);
+	}
+out:
+	read_unlock(&bond->lock);
+}
+
+/*
+ * When using arp monitoring in active-backup mode, this function is
+ * called to determine if any backup slaves have went down or a new
+ * current slave needs to be found.
+ * The backup slaves never generate traffic, they are considered up by merely
+ * receiving traffic. If the current slave goes down, each backup slave will
+ * be given the opportunity to tx/rx an arp before being taken down - this
+ * prevents all slaves from being taken down due to the current slave not
+ * sending any traffic for the backups to receive. The arps are not necessarily
+ * necessary, any tx and rx traffic will keep the current slave up. While any
+ * rx traffic will keep the backup slaves up, the current slave is responsible
+ * for generating traffic to keep them up regardless of any other traffic they
+ * may have received.
+ * see loadbalance_arp_monitor for arp monitoring in load balancing mode
+ */
+static void bond_activebackup_arp_mon(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave;
+	int delta_in_ticks;
+	int i;
+
+	read_lock(&bond->lock);
+
+	delta_in_ticks = (bond->params.arp_interval * HZ) / 1000;
+
+	if (bond->kill_timers) {
+		goto out;
+	}
+
+	if (bond->slave_cnt == 0) {
+		goto re_arm;
+	}
+
+	/* determine if any slave has come up or any backup slave has
+	 * gone down
+	 * TODO: what about up/down delay in arp mode? it wasn't here before
+	 *       so it can wait
+	 */
+	bond_for_each_slave(bond, slave, i) {
+		if (slave->link != BOND_LINK_UP) {
+			if ((jiffies - slave->dev->last_rx) <= delta_in_ticks) {
+
+				slave->link = BOND_LINK_UP;
+
+				write_lock(&bond->curr_slave_lock);
+
+				if ((!bond->curr_active_slave) &&
+				    ((jiffies - slave->dev->trans_start) <= delta_in_ticks)) {
+					bond_change_active_slave(bond, slave);
+					bond->current_arp_slave = NULL;
+				} else if (bond->curr_active_slave != slave) {
+					/* this slave has just come up but we
+					 * already have a current slave; this
+					 * can also happen if bond_enslave adds
+					 * a new slave that is up while we are
+					 * searching for a new slave
+					 */
+					bond_set_slave_inactive_flags(slave);
+					bond->current_arp_slave = NULL;
+				}
+
+				if (slave == bond->curr_active_slave) {
+					printk(KERN_INFO DRV_NAME
+					       ": %s: %s is up and now the "
+					       "active interface\n",
+					       bond_dev->name,
+					       slave->dev->name);
+				} else {
+					printk(KERN_INFO DRV_NAME
+					       ": %s: backup interface %s is "
+					       "now up\n",
+					       bond_dev->name,
+					       slave->dev->name);
+				}
+
+				write_unlock(&bond->curr_slave_lock);
+			}
+		} else {
+			read_lock(&bond->curr_slave_lock);
+
+			if ((slave != bond->curr_active_slave) &&
+			    (!bond->current_arp_slave) &&
+			    (((jiffies - slave->dev->last_rx) >= 3*delta_in_ticks) &&
+			     my_ip)) {
+				/* a backup slave has gone down; three times
+				 * the delta allows the current slave to be
+				 * taken out before the backup slave.
+				 * note: a non-null current_arp_slave indicates
+				 * the curr_active_slave went down and we are
+				 * searching for a new one; under this
+				 * condition we only take the curr_active_slave
+				 * down - this gives each slave a chance to
+				 * tx/rx traffic before being taken out
+				 */
+
+				read_unlock(&bond->curr_slave_lock);
+
+				slave->link  = BOND_LINK_DOWN;
+
+				if (slave->link_failure_count < UINT_MAX) {
+					slave->link_failure_count++;
+				}
+
+				bond_set_slave_inactive_flags(slave);
+
+				printk(KERN_INFO DRV_NAME
+				       ": %s: backup interface %s is now down\n",
+				       bond_dev->name,
+				       slave->dev->name);
+			} else {
+				read_unlock(&bond->curr_slave_lock);
+			}
+		}
+	}
+
+	read_lock(&bond->curr_slave_lock);
+	slave = bond->curr_active_slave;
+	read_unlock(&bond->curr_slave_lock);
+
+	if (slave) {
+		/* if we have sent traffic in the past 2*arp_intervals but
+		 * haven't xmit and rx traffic in that time interval, select
+		 * a different slave. slave->jiffies is only updated when
+		 * a slave first becomes the curr_active_slave - not necessarily
+		 * after every arp; this ensures the slave has a full 2*delta
+		 * before being taken out. if a primary is being used, check
+		 * if it is up and needs to take over as the curr_active_slave
+		 */
+		if ((((jiffies - slave->dev->trans_start) >= (2*delta_in_ticks)) ||
+		     (((jiffies - slave->dev->last_rx) >= (2*delta_in_ticks)) &&
+		      my_ip)) &&
+		    ((jiffies - slave->jiffies) >= 2*delta_in_ticks)) {
+
+			slave->link  = BOND_LINK_DOWN;
+
+			if (slave->link_failure_count < UINT_MAX) {
+				slave->link_failure_count++;
+			}
+
+			printk(KERN_INFO DRV_NAME
+			       ": %s: link status down for active interface "
+			       "%s, disabling it\n",
+			       bond_dev->name,
+			       slave->dev->name);
+
+			write_lock(&bond->curr_slave_lock);
+
+			bond_select_active_slave(bond);
+			slave = bond->curr_active_slave;
+
+			write_unlock(&bond->curr_slave_lock);
+
+			bond->current_arp_slave = slave;
+
+			if (slave) {
+				slave->jiffies = jiffies;
+			}
+		} else if ((bond->primary_slave) &&
+			   (bond->primary_slave != slave) &&
+			   (bond->primary_slave->link == BOND_LINK_UP)) {
+			/* at this point, slave is the curr_active_slave */
+			printk(KERN_INFO DRV_NAME
+			       ": %s: changing from interface %s to primary "
+			       "interface %s\n",
+			       bond_dev->name,
+			       slave->dev->name,
+			       bond->primary_slave->dev->name);
+
+			/* primary is up so switch to it */
+			write_lock(&bond->curr_slave_lock);
+			bond_change_active_slave(bond, bond->primary_slave);
+			write_unlock(&bond->curr_slave_lock);
+
+			slave = bond->primary_slave;
+			slave->jiffies = jiffies;
+		} else {
+			bond->current_arp_slave = NULL;
+		}
+
+		/* the current slave must tx an arp to ensure backup slaves
+		 * rx traffic
+		 */
+		if (slave && my_ip) {
+			bond_arp_send_all(bond, slave);
+		}
+	}
+
+	/* if we don't have a curr_active_slave, search for the next available
+	 * backup slave from the current_arp_slave and make it the candidate
+	 * for becoming the curr_active_slave
+	 */
+	if (!slave) {
+		if (!bond->current_arp_slave) {
+			bond->current_arp_slave = bond->first_slave;
+		}
+
+		if (bond->current_arp_slave) {
+			bond_set_slave_inactive_flags(bond->current_arp_slave);
+
+			/* search for next candidate */
+			bond_for_each_slave_from(bond, slave, i, bond->current_arp_slave) {
+				if (IS_UP(slave->dev)) {
+					slave->link = BOND_LINK_BACK;
+					bond_set_slave_active_flags(slave);
+					bond_arp_send_all(bond, slave);
+					slave->jiffies = jiffies;
+					bond->current_arp_slave = slave;
+					break;
+				}
+
+				/* if the link state is up at this point, we
+				 * mark it down - this can happen if we have
+				 * simultaneous link failures and
+				 * reselect_active_interface doesn't make this
+				 * one the current slave so it is still marked
+				 * up when it is actually down
+				 */
+				if (slave->link == BOND_LINK_UP) {
+					slave->link  = BOND_LINK_DOWN;
+					if (slave->link_failure_count < UINT_MAX) {
+						slave->link_failure_count++;
+					}
+
+					bond_set_slave_inactive_flags(slave);
+
+					printk(KERN_INFO DRV_NAME
+					       ": %s: backup interface %s is "
+					       "now down.\n",
+					       bond_dev->name,
+					       slave->dev->name);
+				}
+			}
+		}
+	}
+
+re_arm:
+	if (bond->params.arp_interval) {
+		mod_timer(&bond->arp_timer, jiffies + delta_in_ticks);
+	}
+out:
+	read_unlock(&bond->lock);
+}
+
+/*------------------------------ proc/seq_file-------------------------------*/
+
+#ifdef CONFIG_PROC_FS
+
+#define SEQ_START_TOKEN ((void *)1)
+
+static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	struct bonding *bond = seq->private;
+	loff_t off = 0;
+	struct slave *slave;
+	int i;
+
+	/* make sure the bond won't be taken away */
+	read_lock(&dev_base_lock);
+	read_lock_bh(&bond->lock);
+
+	if (*pos == 0) {
+		return SEQ_START_TOKEN;
+	}
+
+	bond_for_each_slave(bond, slave, i) {
+		if (++off == *pos) {
+			return slave;
+		}
+	}
+
+	return NULL;
+}
+
+static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct bonding *bond = seq->private;
+	struct slave *slave = v;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN) {
+		return bond->first_slave;
+	}
+
+	slave = slave->next;
+
+	return (slave == bond->first_slave) ? NULL : slave;
+}
+
+static void bond_info_seq_stop(struct seq_file *seq, void *v)
+{
+	struct bonding *bond = seq->private;
+
+	read_unlock_bh(&bond->lock);
+	read_unlock(&dev_base_lock);
+}
+
+static void bond_info_show_master(struct seq_file *seq)
+{
+	struct bonding *bond = seq->private;
+	struct slave *curr;
+
+	read_lock(&bond->curr_slave_lock);
+	curr = bond->curr_active_slave;
+	read_unlock(&bond->curr_slave_lock);
+
+	seq_printf(seq, "Bonding Mode: %s\n",
+		   bond_mode_name(bond->params.mode));
+
+	if (USES_PRIMARY(bond->params.mode)) {
+		seq_printf(seq, "Primary Slave: %s\n",
+			   (bond->params.primary[0]) ?
+			   	bond->params.primary : "None");
+
+		seq_printf(seq, "Currently Active Slave: %s\n",
+			   (curr) ? curr->dev->name : "None");
+	}
+
+	seq_printf(seq, "MII Status: %s\n", (curr) ? "up" : "down");
+	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
+	seq_printf(seq, "Up Delay (ms): %d\n",
+		   bond->params.updelay * bond->params.miimon);
+	seq_printf(seq, "Down Delay (ms): %d\n",
+		   bond->params.downdelay * bond->params.miimon);
+
+	if (bond->params.mode == BOND_MODE_8023AD) {
+		struct ad_info ad_info;
+
+		seq_puts(seq, "\n802.3ad info\n");
+		seq_printf(seq, "LACP rate: %s\n",
+			   (bond->params.lacp_fast) ? "fast" : "slow");
+
+		if (bond_3ad_get_active_agg_info(bond, &ad_info)) {
+			seq_printf(seq, "bond %s has no active aggregator\n",
+				   bond->dev->name);
+		} else {
+			seq_printf(seq, "Active Aggregator Info:\n");
+
+			seq_printf(seq, "\tAggregator ID: %d\n",
+				   ad_info.aggregator_id);
+			seq_printf(seq, "\tNumber of ports: %d\n",
+				   ad_info.ports);
+			seq_printf(seq, "\tActor Key: %d\n",
+				   ad_info.actor_key);
+			seq_printf(seq, "\tPartner Key: %d\n",
+				   ad_info.partner_key);
+			seq_printf(seq, "\tPartner Mac Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+				   ad_info.partner_system[0],
+				   ad_info.partner_system[1],
+				   ad_info.partner_system[2],
+				   ad_info.partner_system[3],
+				   ad_info.partner_system[4],
+				   ad_info.partner_system[5]);
+		}
+	}
+}
+
+static void bond_info_show_slave(struct seq_file *seq, const struct slave *slave)
+{
+	struct bonding *bond = seq->private;
+
+	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
+	seq_printf(seq, "MII Status: %s\n",
+		   (slave->link == BOND_LINK_UP) ?  "up" : "down");
+	seq_printf(seq, "Link Failure Count: %d\n",
+		   slave->link_failure_count);
+
+	if (app_abi_ver >= 1) {
+		seq_printf(seq,
+			   "Permanent HW addr: %02x:%02x:%02x:%02x:%02x:%02x\n",
+			   slave->perm_hwaddr[0],
+			   slave->perm_hwaddr[1],
+			   slave->perm_hwaddr[2],
+			   slave->perm_hwaddr[3],
+			   slave->perm_hwaddr[4],
+			   slave->perm_hwaddr[5]);
+	}
+
+	if (bond->params.mode == BOND_MODE_8023AD) {
+		const struct aggregator *agg
+			= SLAVE_AD_INFO(slave).port.aggregator;
+
+		if (agg) {
+			seq_printf(seq, "Aggregator ID: %d\n",
+				   agg->aggregator_identifier);
+		} else {
+			seq_puts(seq, "Aggregator ID: N/A\n");
+		}
+	}
+}
+
+static int bond_info_seq_show(struct seq_file *seq, void *v)
+{
+	if (v == SEQ_START_TOKEN) {
+		seq_printf(seq, "%s\n", version);
+		bond_info_show_master(seq);
+	} else {
+		bond_info_show_slave(seq, v);
+	}
+
+	return 0;
+}
+
+static struct seq_operations bond_info_seq_ops = {
+	.start = bond_info_seq_start,
+	.next  = bond_info_seq_next,
+	.stop  = bond_info_seq_stop,
+	.show  = bond_info_seq_show,
+};
+
+static int bond_info_open(struct inode *inode, struct file *file)
+{
+	struct seq_file *seq;
+	struct proc_dir_entry *proc;
+	int res;
+
+	res = seq_open(file, &bond_info_seq_ops);
+	if (!res) {
+		/* recover the pointer buried in proc_dir_entry data */
+		seq = file->private_data;
+		proc = PDE(inode);
+		seq->private = proc->data;
+	}
+
+	return res;
+}
+
+static struct file_operations bond_info_fops = {
+	.owner   = THIS_MODULE,
+	.open    = bond_info_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release,
+};
+
+static int bond_create_proc_entry(struct bonding *bond)
+{
+	struct net_device *bond_dev = bond->dev;
+
+	if (bond_proc_dir) {
+		bond->proc_entry = create_proc_entry(bond_dev->name,
+						     S_IRUGO,
+						     bond_proc_dir);
+		if (bond->proc_entry == NULL) {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: Cannot create /proc/net/%s/%s\n",
+			       DRV_NAME, bond_dev->name);
+		} else {
+			bond->proc_entry->data = bond;
+			bond->proc_entry->proc_fops = &bond_info_fops;
+			bond->proc_entry->owner = THIS_MODULE;
+			memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
+		}
+	}
+
+	return 0;
+}
+
+static void bond_remove_proc_entry(struct bonding *bond)
+{
+	if (bond_proc_dir && bond->proc_entry) {
+		remove_proc_entry(bond->proc_file_name, bond_proc_dir);
+		memset(bond->proc_file_name, 0, IFNAMSIZ);
+		bond->proc_entry = NULL;
+	}
+}
+
+/* Create the bonding directory under /proc/net, if doesn't exist yet.
+ * Caller must hold rtnl_lock.
+ */
+static void bond_create_proc_dir(void)
+{
+	int len = strlen(DRV_NAME);
+
+	for (bond_proc_dir = proc_net->subdir; bond_proc_dir;
+	     bond_proc_dir = bond_proc_dir->next) {
+		if ((bond_proc_dir->namelen == len) &&
+		    !memcmp(bond_proc_dir->name, DRV_NAME, len)) {
+			break;
+		}
+	}
+
+	if (!bond_proc_dir) {
+		bond_proc_dir = proc_mkdir(DRV_NAME, proc_net);
+		if (bond_proc_dir) {
+			bond_proc_dir->owner = THIS_MODULE;
+		} else {
+			printk(KERN_WARNING DRV_NAME
+				": Warning: cannot create /proc/net/%s\n",
+				DRV_NAME);
+		}
+	}
+}
+
+/* Destroy the bonding directory under /proc/net, if empty.
+ * Caller must hold rtnl_lock.
+ */
+static void bond_destroy_proc_dir(void)
+{
+	struct proc_dir_entry *de;
+
+	if (!bond_proc_dir) {
+		return;
+	}
+
+	/* verify that the /proc dir is empty */
+	for (de = bond_proc_dir->subdir; de; de = de->next) {
+		/* ignore . and .. */
+		if (*(de->name) != '.') {
+			break;
+		}
+	}
+
+	if (de) {
+		if (bond_proc_dir->owner == THIS_MODULE) {
+			bond_proc_dir->owner = NULL;
+		}
+	} else {
+		remove_proc_entry(DRV_NAME, proc_net);
+		bond_proc_dir = NULL;
+	}
+}
+#endif /* CONFIG_PROC_FS */
+
+/*-------------------------- netdev event handling --------------------------*/
+
+/*
+ * Change device name
+ */
+static int bond_event_changename(struct bonding *bond)
+{
+#ifdef CONFIG_PROC_FS
+	bond_remove_proc_entry(bond);
+	bond_create_proc_entry(bond);
+#endif
+
+	return NOTIFY_DONE;
+}
+
+static int bond_master_netdev_event(unsigned long event, struct net_device *bond_dev)
+{
+	struct bonding *event_bond = bond_dev->priv;
+
+	switch (event) {
+	case NETDEV_CHANGENAME:
+		return bond_event_changename(event_bond);
+	case NETDEV_UNREGISTER:
+		/*
+		 * TODO: remove a bond from the list?
+		 */
+		break;
+	default:
+		break;
+	}
+
+	return NOTIFY_DONE;
+}
+
+static int bond_slave_netdev_event(unsigned long event, struct net_device *slave_dev)
+{
+	struct net_device *bond_dev = slave_dev->master;
+
+	switch (event) {
+	case NETDEV_UNREGISTER:
+		if (bond_dev) {
+			bond_release(bond_dev, slave_dev);
+		}
+		break;
+	case NETDEV_CHANGE:
+		/*
+		 * TODO: is this what we get if somebody
+		 * sets up a hierarchical bond, then rmmod's
+		 * one of the slave bonding devices?
+		 */
+		break;
+	case NETDEV_DOWN:
+		/*
+		 * ... Or is it this?
+		 */
+		break;
+	case NETDEV_CHANGEMTU:
+		/*
+		 * TODO: Should slaves be allowed to
+		 * independently alter their MTU?  For
+		 * an active-backup bond, slaves need
+		 * not be the same type of device, so
+		 * MTUs may vary.  For other modes,
+		 * slaves arguably should have the
+		 * same MTUs. To do this, we'd need to
+		 * take over the slave's change_mtu
+		 * function for the duration of their
+		 * servitude.
+		 */
+		break;
+	case NETDEV_CHANGENAME:
+		/*
+		 * TODO: handle changing the primary's name
+		 */
+		break;
+	default:
+		break;
+	}
+
+	return NOTIFY_DONE;
+}
+
+/*
+ * bond_netdev_event: handle netdev notifier chain events.
+ *
+ * This function receives events for the netdev chain.  The caller (an
+ * ioctl handler calling notifier_call_chain) holds the necessary
+ * locks for us to safely manipulate the slave devices (RTNL lock,
+ * dev_probe_lock).
+ */
+static int bond_netdev_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+	struct net_device *event_dev = (struct net_device *)ptr;
+
+	dprintk("event_dev: %s, event: %lx\n",
+		(event_dev ? event_dev->name : "None"),
+		event);
+
+	if (event_dev->flags & IFF_MASTER) {
+		dprintk("IFF_MASTER\n");
+		return bond_master_netdev_event(event, event_dev);
+	}
+
+	if (event_dev->flags & IFF_SLAVE) {
+		dprintk("IFF_SLAVE\n");
+		return bond_slave_netdev_event(event, event_dev);
+	}
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block bond_netdev_notifier = {
+	.notifier_call = bond_netdev_event,
+};
+
+/*-------------------------- Packet type handling ---------------------------*/
+
+/* register to receive lacpdus on a bond */
+static void bond_register_lacpdu(struct bonding *bond)
+{
+	struct packet_type *pk_type = &(BOND_AD_INFO(bond).ad_pkt_type);
+
+	/* initialize packet type */
+	pk_type->type = PKT_TYPE_LACPDU;
+	pk_type->dev = bond->dev;
+	pk_type->func = bond_3ad_lacpdu_recv;
+
+	dev_add_pack(pk_type);
+}
+
+/* unregister to receive lacpdus on a bond */
+static void bond_unregister_lacpdu(struct bonding *bond)
+{
+	dev_remove_pack(&(BOND_AD_INFO(bond).ad_pkt_type));
+}
+
+/*-------------------------- Device entry points ----------------------------*/
+
+static int bond_open(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct timer_list *mii_timer = &bond->mii_timer;
+	struct timer_list *arp_timer = &bond->arp_timer;
+
+	bond->kill_timers = 0;
+
+	if ((bond->params.mode == BOND_MODE_TLB) ||
+	    (bond->params.mode == BOND_MODE_ALB)) {
+		struct timer_list *alb_timer = &(BOND_ALB_INFO(bond).alb_timer);
+
+		/* bond_alb_initialize must be called before the timer
+		 * is started.
+		 */
+		if (bond_alb_initialize(bond, (bond->params.mode == BOND_MODE_ALB))) {
+			/* something went wrong - fail the open operation */
+			return -1;
+		}
+
+		init_timer(alb_timer);
+		alb_timer->expires  = jiffies + 1;
+		alb_timer->data     = (unsigned long)bond;
+		alb_timer->function = (void *)&bond_alb_monitor;
+		add_timer(alb_timer);
+	}
+
+	if (bond->params.miimon) {  /* link check interval, in milliseconds. */
+		init_timer(mii_timer);
+		mii_timer->expires  = jiffies + 1;
+		mii_timer->data     = (unsigned long)bond_dev;
+		mii_timer->function = (void *)&bond_mii_monitor;
+		add_timer(mii_timer);
+	}
+
+	if (bond->params.arp_interval) {  /* arp interval, in milliseconds. */
+		init_timer(arp_timer);
+		arp_timer->expires  = jiffies + 1;
+		arp_timer->data     = (unsigned long)bond_dev;
+		if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) {
+			arp_timer->function = (void *)&bond_activebackup_arp_mon;
+		} else {
+			arp_timer->function = (void *)&bond_loadbalance_arp_mon;
+		}
+		add_timer(arp_timer);
+	}
+
+	if (bond->params.mode == BOND_MODE_8023AD) {
+		struct timer_list *ad_timer = &(BOND_AD_INFO(bond).ad_timer);
+		init_timer(ad_timer);
+		ad_timer->expires  = jiffies + 1;
+		ad_timer->data     = (unsigned long)bond;
+		ad_timer->function = (void *)&bond_3ad_state_machine_handler;
+		add_timer(ad_timer);
+
+		/* register to receive LACPDUs */
+		bond_register_lacpdu(bond);
+	}
+
+	return 0;
+}
+
+static int bond_close(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+
+	if (bond->params.mode == BOND_MODE_8023AD) {
+		/* Unregister the receive of LACPDUs */
+		bond_unregister_lacpdu(bond);
+	}
+
+	write_lock_bh(&bond->lock);
+
+	bond_mc_list_destroy(bond);
+
+	/* signal timers not to re-arm */
+	bond->kill_timers = 1;
+
+	write_unlock_bh(&bond->lock);
+
+	/* del_timer_sync must run without holding the bond->lock
+	 * because a running timer might be trying to hold it too
+	 */
+
+	if (bond->params.miimon) {  /* link check interval, in milliseconds. */
+		del_timer_sync(&bond->mii_timer);
+	}
+
+	if (bond->params.arp_interval) {  /* arp interval, in milliseconds. */
+		del_timer_sync(&bond->arp_timer);
+	}
+
+	switch (bond->params.mode) {
+	case BOND_MODE_8023AD:
+		del_timer_sync(&(BOND_AD_INFO(bond).ad_timer));
+		break;
+	case BOND_MODE_TLB:
+	case BOND_MODE_ALB:
+		del_timer_sync(&(BOND_ALB_INFO(bond).alb_timer));
+		break;
+	default:
+		break;
+	}
+
+	/* Release the bonded slaves */
+	bond_release_all(bond_dev);
+
+	if ((bond->params.mode == BOND_MODE_TLB) ||
+	    (bond->params.mode == BOND_MODE_ALB)) {
+		/* Must be called only after all
+		 * slaves have been released
+		 */
+		bond_alb_deinitialize(bond);
+	}
+
+	return 0;
+}
+
+static struct net_device_stats *bond_get_stats(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct net_device_stats *stats = &(bond->stats), *sstats;
+	struct slave *slave;
+	int i;
+
+	memset(stats, 0, sizeof(struct net_device_stats));
+
+	read_lock_bh(&bond->lock);
+
+	bond_for_each_slave(bond, slave, i) {
+		sstats = slave->dev->get_stats(slave->dev);
+
+		stats->rx_packets += sstats->rx_packets;
+		stats->rx_bytes += sstats->rx_bytes;
+		stats->rx_errors += sstats->rx_errors;
+		stats->rx_dropped += sstats->rx_dropped;
+
+		stats->tx_packets += sstats->tx_packets;
+		stats->tx_bytes += sstats->tx_bytes;
+		stats->tx_errors += sstats->tx_errors;
+		stats->tx_dropped += sstats->tx_dropped;
+
+		stats->multicast += sstats->multicast;
+		stats->collisions += sstats->collisions;
+
+		stats->rx_length_errors += sstats->rx_length_errors;
+		stats->rx_over_errors += sstats->rx_over_errors;
+		stats->rx_crc_errors += sstats->rx_crc_errors;
+		stats->rx_frame_errors += sstats->rx_frame_errors;
+		stats->rx_fifo_errors += sstats->rx_fifo_errors;
+		stats->rx_missed_errors += sstats->rx_missed_errors;
+
+		stats->tx_aborted_errors += sstats->tx_aborted_errors;
+		stats->tx_carrier_errors += sstats->tx_carrier_errors;
+		stats->tx_fifo_errors += sstats->tx_fifo_errors;
+		stats->tx_heartbeat_errors += sstats->tx_heartbeat_errors;
+		stats->tx_window_errors += sstats->tx_window_errors;
+	}
+
+	read_unlock_bh(&bond->lock);
+
+	return stats;
+}
+
+static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd)
+{
+	struct net_device *slave_dev = NULL;
+	struct ifbond k_binfo;
+	struct ifbond __user *u_binfo = NULL;
+	struct ifslave k_sinfo;
+	struct ifslave __user *u_sinfo = NULL;
+	struct mii_ioctl_data *mii = NULL;
+	int prev_abi_ver = orig_app_abi_ver;
+	int res = 0;
+
+	dprintk("bond_ioctl: master=%s, cmd=%d\n",
+		bond_dev->name, cmd);
+
+	switch (cmd) {
+	case SIOCETHTOOL:
+		return bond_ethtool_ioctl(bond_dev, ifr);
+	case SIOCGMIIPHY:
+		mii = if_mii(ifr);
+		if (!mii) {
+			return -EINVAL;
+		}
+		mii->phy_id = 0;
+		/* Fall Through */
+	case SIOCGMIIREG:
+		/*
+		 * We do this again just in case we were called by SIOCGMIIREG
+		 * instead of SIOCGMIIPHY.
+		 */
+		mii = if_mii(ifr);
+		if (!mii) {
+			return -EINVAL;
+		}
+
+		if (mii->reg_num == 1) {
+			struct bonding *bond = bond_dev->priv;
+			mii->val_out = 0;
+			read_lock_bh(&bond->lock);
+			read_lock(&bond->curr_slave_lock);
+			if (bond->curr_active_slave) {
+				mii->val_out = BMSR_LSTATUS;
+			}
+			read_unlock(&bond->curr_slave_lock);
+			read_unlock_bh(&bond->lock);
+		}
+
+		return 0;
+	case BOND_INFO_QUERY_OLD:
+	case SIOCBONDINFOQUERY:
+		u_binfo = (struct ifbond __user *)ifr->ifr_data;
+
+		if (copy_from_user(&k_binfo, u_binfo, sizeof(ifbond))) {
+			return -EFAULT;
+		}
+
+		res = bond_info_query(bond_dev, &k_binfo);
+		if (res == 0) {
+			if (copy_to_user(u_binfo, &k_binfo, sizeof(ifbond))) {
+				return -EFAULT;
+			}
+		}
+
+		return res;
+	case BOND_SLAVE_INFO_QUERY_OLD:
+	case SIOCBONDSLAVEINFOQUERY:
+		u_sinfo = (struct ifslave __user *)ifr->ifr_data;
+
+		if (copy_from_user(&k_sinfo, u_sinfo, sizeof(ifslave))) {
+			return -EFAULT;
+		}
+
+		res = bond_slave_info_query(bond_dev, &k_sinfo);
+		if (res == 0) {
+			if (copy_to_user(u_sinfo, &k_sinfo, sizeof(ifslave))) {
+				return -EFAULT;
+			}
+		}
+
+		return res;
+	default:
+		/* Go on */
+		break;
+	}
+
+	if (!capable(CAP_NET_ADMIN)) {
+		return -EPERM;
+	}
+
+	if (orig_app_abi_ver == -1) {
+		/* no orig_app_abi_ver was provided yet, so we'll use the
+		 * current one from now on, even if it's 0
+		 */
+		orig_app_abi_ver = app_abi_ver;
+
+	} else if (orig_app_abi_ver != app_abi_ver) {
+		printk(KERN_ERR DRV_NAME
+		       ": Error: already using ifenslave ABI version %d; to "
+		       "upgrade ifenslave to version %d, you must first "
+		       "reload bonding.\n",
+		       orig_app_abi_ver, app_abi_ver);
+		return -EINVAL;
+	}
+
+	slave_dev = dev_get_by_name(ifr->ifr_slave);
+
+	dprintk("slave_dev=%p: \n", slave_dev);
+
+	if (!slave_dev) {
+		res = -ENODEV;
+	} else {
+		dprintk("slave_dev->name=%s: \n", slave_dev->name);
+		switch (cmd) {
+		case BOND_ENSLAVE_OLD:
+		case SIOCBONDENSLAVE:
+			res = bond_enslave(bond_dev, slave_dev);
+			break;
+		case BOND_RELEASE_OLD:
+		case SIOCBONDRELEASE:
+			res = bond_release(bond_dev, slave_dev);
+			break;
+		case BOND_SETHWADDR_OLD:
+		case SIOCBONDSETHWADDR:
+			res = bond_sethwaddr(bond_dev, slave_dev);
+			break;
+		case BOND_CHANGE_ACTIVE_OLD:
+		case SIOCBONDCHANGEACTIVE:
+			res = bond_ioctl_change_active(bond_dev, slave_dev);
+			break;
+		default:
+			res = -EOPNOTSUPP;
+		}
+
+		dev_put(slave_dev);
+	}
+
+	if (res < 0) {
+		/* The ioctl failed, so there's no point in changing the
+		 * orig_app_abi_ver. We'll restore it's value just in case
+		 * we've changed it earlier in this function.
+		 */
+		orig_app_abi_ver = prev_abi_ver;
+	}
+
+	return res;
+}
+
+static void bond_set_multicast_list(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct dev_mc_list *dmi;
+
+	write_lock_bh(&bond->lock);
+
+	/*
+	 * Do promisc before checking multicast_mode
+	 */
+	if ((bond_dev->flags & IFF_PROMISC) && !(bond->flags & IFF_PROMISC)) {
+		bond_set_promiscuity(bond, 1);
+	}
+
+	if (!(bond_dev->flags & IFF_PROMISC) && (bond->flags & IFF_PROMISC)) {
+		bond_set_promiscuity(bond, -1);
+	}
+
+	/* set allmulti flag to slaves */
+	if ((bond_dev->flags & IFF_ALLMULTI) && !(bond->flags & IFF_ALLMULTI)) {
+		bond_set_allmulti(bond, 1);
+	}
+
+	if (!(bond_dev->flags & IFF_ALLMULTI) && (bond->flags & IFF_ALLMULTI)) {
+		bond_set_allmulti(bond, -1);
+	}
+
+	bond->flags = bond_dev->flags;
+
+	/* looking for addresses to add to slaves' mc list */
+	for (dmi = bond_dev->mc_list; dmi; dmi = dmi->next) {
+		if (!bond_mc_list_find_dmi(dmi, bond->mc_list)) {
+			bond_mc_add(bond, dmi->dmi_addr, dmi->dmi_addrlen);
+		}
+	}
+
+	/* looking for addresses to delete from slaves' list */
+	for (dmi = bond->mc_list; dmi; dmi = dmi->next) {
+		if (!bond_mc_list_find_dmi(dmi, bond_dev->mc_list)) {
+			bond_mc_delete(bond, dmi->dmi_addr, dmi->dmi_addrlen);
+		}
+	}
+
+	/* save master's multicast list */
+	bond_mc_list_destroy(bond);
+	bond_mc_list_copy(bond_dev->mc_list, bond, GFP_ATOMIC);
+
+	write_unlock_bh(&bond->lock);
+}
+
+/*
+ * Change the MTU of all of a master's slaves to match the master
+ */
+static int bond_change_mtu(struct net_device *bond_dev, int new_mtu)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave, *stop_at;
+	int res = 0;
+	int i;
+
+	dprintk("bond=%p, name=%s, new_mtu=%d\n", bond,
+		(bond_dev ? bond_dev->name : "None"), new_mtu);
+
+	/* Can't hold bond->lock with bh disabled here since
+	 * some base drivers panic. On the other hand we can't
+	 * hold bond->lock without bh disabled because we'll
+	 * deadlock. The only solution is to rely on the fact
+	 * that we're under rtnl_lock here, and the slaves
+	 * list won't change. This doesn't solve the problem
+	 * of setting the slave's MTU while it is
+	 * transmitting, but the assumption is that the base
+	 * driver can handle that.
+	 *
+	 * TODO: figure out a way to safely iterate the slaves
+	 * list, but without holding a lock around the actual
+	 * call to the base driver.
+	 */
+
+	bond_for_each_slave(bond, slave, i) {
+		dprintk("s %p s->p %p c_m %p\n", slave,
+			slave->prev, slave->dev->change_mtu);
+		res = dev_set_mtu(slave->dev, new_mtu);
+
+		if (res) {
+			/* If we failed to set the slave's mtu to the new value
+			 * we must abort the operation even in ACTIVE_BACKUP
+			 * mode, because if we allow the backup slaves to have
+			 * different mtu values than the active slave we'll
+			 * need to change their mtu when doing a failover. That
+			 * means changing their mtu from timer context, which
+			 * is probably not a good idea.
+			 */
+			dprintk("err %d %s\n", res, slave->dev->name);
+			goto unwind;
+		}
+	}
+
+	bond_dev->mtu = new_mtu;
+
+	return 0;
+
+unwind:
+	/* unwind from head to the slave that failed */
+	stop_at = slave;
+	bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) {
+		int tmp_res;
+
+		tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu);
+		if (tmp_res) {
+			dprintk("unwind err %d dev %s\n", tmp_res,
+				slave->dev->name);
+		}
+	}
+
+	return res;
+}
+
+/*
+ * Change HW address
+ *
+ * Note that many devices must be down to change the HW address, and
+ * downing the master releases all slaves.  We can make bonds full of
+ * bonding devices to test this, however.
+ */
+static int bond_set_mac_address(struct net_device *bond_dev, void *addr)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct sockaddr *sa = addr, tmp_sa;
+	struct slave *slave, *stop_at;
+	int res = 0;
+	int i;
+
+	dprintk("bond=%p, name=%s\n", bond, (bond_dev ? bond_dev->name : "None"));
+
+	if (!is_valid_ether_addr(sa->sa_data)) {
+		return -EADDRNOTAVAIL;
+	}
+
+	/* Can't hold bond->lock with bh disabled here since
+	 * some base drivers panic. On the other hand we can't
+	 * hold bond->lock without bh disabled because we'll
+	 * deadlock. The only solution is to rely on the fact
+	 * that we're under rtnl_lock here, and the slaves
+	 * list won't change. This doesn't solve the problem
+	 * of setting the slave's hw address while it is
+	 * transmitting, but the assumption is that the base
+	 * driver can handle that.
+	 *
+	 * TODO: figure out a way to safely iterate the slaves
+	 * list, but without holding a lock around the actual
+	 * call to the base driver.
+	 */
+
+	bond_for_each_slave(bond, slave, i) {
+		dprintk("slave %p %s\n", slave, slave->dev->name);
+
+		if (slave->dev->set_mac_address == NULL) {
+			res = -EOPNOTSUPP;
+			dprintk("EOPNOTSUPP %s\n", slave->dev->name);
+			goto unwind;
+		}
+
+		res = dev_set_mac_address(slave->dev, addr);
+		if (res) {
+			/* TODO: consider downing the slave
+			 * and retry ?
+			 * User should expect communications
+			 * breakage anyway until ARP finish
+			 * updating, so...
+			 */
+			dprintk("err %d %s\n", res, slave->dev->name);
+			goto unwind;
+		}
+	}
+
+	/* success */
+	memcpy(bond_dev->dev_addr, sa->sa_data, bond_dev->addr_len);
+	return 0;
+
+unwind:
+	memcpy(tmp_sa.sa_data, bond_dev->dev_addr, bond_dev->addr_len);
+	tmp_sa.sa_family = bond_dev->type;
+
+	/* unwind from head to the slave that failed */
+	stop_at = slave;
+	bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) {
+		int tmp_res;
+
+		tmp_res = dev_set_mac_address(slave->dev, &tmp_sa);
+		if (tmp_res) {
+			dprintk("unwind err %d dev %s\n", tmp_res,
+				slave->dev->name);
+		}
+	}
+
+	return res;
+}
+
+static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave, *start_at;
+	int i;
+	int res = 1;
+
+	read_lock(&bond->lock);
+
+	if (!BOND_IS_OK(bond)) {
+		goto out;
+	}
+
+	read_lock(&bond->curr_slave_lock);
+	slave = start_at = bond->curr_active_slave;
+	read_unlock(&bond->curr_slave_lock);
+
+	if (!slave) {
+		goto out;
+	}
+
+	bond_for_each_slave_from(bond, slave, i, start_at) {
+		if (IS_UP(slave->dev) &&
+		    (slave->link == BOND_LINK_UP) &&
+		    (slave->state == BOND_STATE_ACTIVE)) {
+			res = bond_dev_queue_xmit(bond, skb, slave->dev);
+
+			write_lock(&bond->curr_slave_lock);
+			bond->curr_active_slave = slave->next;
+			write_unlock(&bond->curr_slave_lock);
+
+			break;
+		}
+	}
+
+
+out:
+	if (res) {
+		/* no suitable interface, frame not sent */
+		dev_kfree_skb(skb);
+	}
+	read_unlock(&bond->lock);
+	return 0;
+}
+
+/*
+ * in active-backup mode, we know that bond->curr_active_slave is always valid if
+ * the bond has a usable interface.
+ */
+static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	int res = 1;
+
+	/* if we are sending arp packets, try to at least
+	   identify our own ip address */
+	if (bond->params.arp_interval && !my_ip &&
+		(skb->protocol == __constant_htons(ETH_P_ARP))) {
+		char *the_ip = (char *)skb->data +
+				sizeof(struct ethhdr) +
+				sizeof(struct arphdr) +
+				ETH_ALEN;
+		memcpy(&my_ip, the_ip, 4);
+	}
+
+	read_lock(&bond->lock);
+	read_lock(&bond->curr_slave_lock);
+
+	if (!BOND_IS_OK(bond)) {
+		goto out;
+	}
+
+	if (bond->curr_active_slave) { /* one usable interface */
+		res = bond_dev_queue_xmit(bond, skb, bond->curr_active_slave->dev);
+	}
+
+out:
+	if (res) {
+		/* no suitable interface, frame not sent */
+		dev_kfree_skb(skb);
+	}
+	read_unlock(&bond->curr_slave_lock);
+	read_unlock(&bond->lock);
+	return 0;
+}
+
+/*
+ * in XOR mode, we determine the output device by performing xor on
+ * the source and destination hw adresses.  If this device is not
+ * enabled, find the next slave following this xor slave.
+ */
+static int bond_xmit_xor(struct sk_buff *skb, struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct ethhdr *data = (struct ethhdr *)skb->data;
+	struct slave *slave, *start_at;
+	int slave_no;
+	int i;
+	int res = 1;
+
+	read_lock(&bond->lock);
+
+	if (!BOND_IS_OK(bond)) {
+		goto out;
+	}
+
+	slave_no = (data->h_dest[5]^bond_dev->dev_addr[5]) % bond->slave_cnt;
+
+	bond_for_each_slave(bond, slave, i) {
+		slave_no--;
+		if (slave_no < 0) {
+			break;
+		}
+	}
+
+	start_at = slave;
+
+	bond_for_each_slave_from(bond, slave, i, start_at) {
+		if (IS_UP(slave->dev) &&
+		    (slave->link == BOND_LINK_UP) &&
+		    (slave->state == BOND_STATE_ACTIVE)) {
+			res = bond_dev_queue_xmit(bond, skb, slave->dev);
+			break;
+		}
+	}
+
+out:
+	if (res) {
+		/* no suitable interface, frame not sent */
+		dev_kfree_skb(skb);
+	}
+	read_unlock(&bond->lock);
+	return 0;
+}
+
+/*
+ * in broadcast mode, we send everything to all usable interfaces.
+ */
+static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+	struct slave *slave, *start_at;
+	struct net_device *tx_dev = NULL;
+	int i;
+	int res = 1;
+
+	read_lock(&bond->lock);
+
+	if (!BOND_IS_OK(bond)) {
+		goto out;
+	}
+
+	read_lock(&bond->curr_slave_lock);
+	start_at = bond->curr_active_slave;
+	read_unlock(&bond->curr_slave_lock);
+
+	if (!start_at) {
+		goto out;
+	}
+
+	bond_for_each_slave_from(bond, slave, i, start_at) {
+		if (IS_UP(slave->dev) &&
+		    (slave->link == BOND_LINK_UP) &&
+		    (slave->state == BOND_STATE_ACTIVE)) {
+			if (tx_dev) {
+				struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
+				if (!skb2) {
+					printk(KERN_ERR DRV_NAME
+					       ": Error: bond_xmit_broadcast(): "
+					       "skb_clone() failed\n");
+					continue;
+				}
+
+				res = bond_dev_queue_xmit(bond, skb2, tx_dev);
+				if (res) {
+					dev_kfree_skb(skb2);
+					continue;
+				}
+			}
+			tx_dev = slave->dev;
+		}
+	}
+
+	if (tx_dev) {
+		res = bond_dev_queue_xmit(bond, skb, tx_dev);
+	}
+
+out:
+	if (res) {
+		/* no suitable interface, frame not sent */
+		dev_kfree_skb(skb);
+	}
+	/* frame sent to all suitable interfaces */
+	read_unlock(&bond->lock);
+	return 0;
+}
+
+/*------------------------- Device initialization ---------------------------*/
+
+/*
+ * set bond mode specific net device operations
+ */
+static inline void bond_set_mode_ops(struct net_device *bond_dev, int mode)
+{
+	switch (mode) {
+	case BOND_MODE_ROUNDROBIN:
+		bond_dev->hard_start_xmit = bond_xmit_roundrobin;
+		break;
+	case BOND_MODE_ACTIVEBACKUP:
+		bond_dev->hard_start_xmit = bond_xmit_activebackup;
+		break;
+	case BOND_MODE_XOR:
+		bond_dev->hard_start_xmit = bond_xmit_xor;
+		break;
+	case BOND_MODE_BROADCAST:
+		bond_dev->hard_start_xmit = bond_xmit_broadcast;
+		break;
+	case BOND_MODE_8023AD:
+		bond_dev->hard_start_xmit = bond_3ad_xmit_xor;
+		break;
+	case BOND_MODE_TLB:
+	case BOND_MODE_ALB:
+		bond_dev->hard_start_xmit = bond_alb_xmit;
+		bond_dev->set_mac_address = bond_alb_set_mac_address;
+		break;
+	default:
+		/* Should never happen, mode already checked */
+		printk(KERN_ERR DRV_NAME
+		       ": Error: Unknown bonding mode %d\n",
+		       mode);
+		break;
+	}
+}
+
+/*
+ * Does not allocate but creates a /proc entry.
+ * Allowed to fail.
+ */
+static int __init bond_init(struct net_device *bond_dev, struct bond_params *params)
+{
+	struct bonding *bond = bond_dev->priv;
+
+	dprintk("Begin bond_init for %s\n", bond_dev->name);
+
+	/* initialize rwlocks */
+	rwlock_init(&bond->lock);
+	rwlock_init(&bond->curr_slave_lock);
+
+	bond->params = *params; /* copy params struct */
+
+	/* Initialize pointers */
+	bond->first_slave = NULL;
+	bond->curr_active_slave = NULL;
+	bond->current_arp_slave = NULL;
+	bond->primary_slave = NULL;
+	bond->dev = bond_dev;
+	INIT_LIST_HEAD(&bond->vlan_list);
+
+	/* Initialize the device entry points */
+	bond_dev->open = bond_open;
+	bond_dev->stop = bond_close;
+	bond_dev->get_stats = bond_get_stats;
+	bond_dev->do_ioctl = bond_do_ioctl;
+	bond_dev->set_multicast_list = bond_set_multicast_list;
+	bond_dev->change_mtu = bond_change_mtu;
+	bond_dev->set_mac_address = bond_set_mac_address;
+
+	bond_set_mode_ops(bond_dev, bond->params.mode);
+
+	bond_dev->destructor = free_netdev;
+
+	/* Initialize the device options */
+	bond_dev->tx_queue_len = 0;
+	bond_dev->flags |= IFF_MASTER|IFF_MULTICAST;
+
+	/* At first, we block adding VLANs. That's the only way to
+	 * prevent problems that occur when adding VLANs over an
+	 * empty bond. The block will be removed once non-challenged
+	 * slaves are enslaved.
+	 */
+	bond_dev->features |= NETIF_F_VLAN_CHALLENGED;
+
+	/* don't acquire bond device's xmit_lock when 
+	 * transmitting */
+	bond_dev->features |= NETIF_F_LLTX;
+
+	/* By default, we declare the bond to be fully
+	 * VLAN hardware accelerated capable. Special
+	 * care is taken in the various xmit functions
+	 * when there are slaves that are not hw accel
+	 * capable
+	 */
+	bond_dev->vlan_rx_register = bond_vlan_rx_register;
+	bond_dev->vlan_rx_add_vid  = bond_vlan_rx_add_vid;
+	bond_dev->vlan_rx_kill_vid = bond_vlan_rx_kill_vid;
+	bond_dev->features |= (NETIF_F_HW_VLAN_TX |
+			       NETIF_F_HW_VLAN_RX |
+			       NETIF_F_HW_VLAN_FILTER);
+
+#ifdef CONFIG_PROC_FS
+	bond_create_proc_entry(bond);
+#endif
+
+	list_add_tail(&bond->bond_list, &bond_dev_list);
+
+	return 0;
+}
+
+/* De-initialize device specific data.
+ * Caller must hold rtnl_lock.
+ */
+static inline void bond_deinit(struct net_device *bond_dev)
+{
+	struct bonding *bond = bond_dev->priv;
+
+	list_del(&bond->bond_list);
+
+#ifdef CONFIG_PROC_FS
+	bond_remove_proc_entry(bond);
+#endif
+}
+
+/* Unregister and free all bond devices.
+ * Caller must hold rtnl_lock.
+ */
+static void bond_free_all(void)
+{
+	struct bonding *bond, *nxt;
+
+	list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) {
+		struct net_device *bond_dev = bond->dev;
+
+		unregister_netdevice(bond_dev);
+		bond_deinit(bond_dev);
+	}
+
+#ifdef CONFIG_PROC_FS
+	bond_destroy_proc_dir();
+#endif
+}
+
+/*------------------------- Module initialization ---------------------------*/
+
+/*
+ * Convert string input module parms.  Accept either the
+ * number of the mode or its string name.
+ */
+static inline int bond_parse_parm(char *mode_arg, struct bond_parm_tbl *tbl)
+{
+	int i;
+
+	for (i = 0; tbl[i].modename; i++) {
+		if ((isdigit(*mode_arg) &&
+		     tbl[i].mode == simple_strtol(mode_arg, NULL, 0)) ||
+		    (strncmp(mode_arg, tbl[i].modename,
+			     strlen(tbl[i].modename)) == 0)) {
+			return tbl[i].mode;
+		}
+	}
+
+	return -1;
+}
+
+static int bond_check_params(struct bond_params *params)
+{
+	/*
+	 * Convert string parameters.
+	 */
+	if (mode) {
+		bond_mode = bond_parse_parm(mode, bond_mode_tbl);
+		if (bond_mode == -1) {
+			printk(KERN_ERR DRV_NAME
+			       ": Error: Invalid bonding mode \"%s\"\n",
+			       mode == NULL ? "NULL" : mode);
+			return -EINVAL;
+		}
+	}
+
+	if (lacp_rate) {
+		if (bond_mode != BOND_MODE_8023AD) {
+			printk(KERN_INFO DRV_NAME
+			       ": lacp_rate param is irrelevant in mode %s\n",
+			       bond_mode_name(bond_mode));
+		} else {
+			lacp_fast = bond_parse_parm(lacp_rate, bond_lacp_tbl);
+			if (lacp_fast == -1) {
+				printk(KERN_ERR DRV_NAME
+				       ": Error: Invalid lacp rate \"%s\"\n",
+				       lacp_rate == NULL ? "NULL" : lacp_rate);
+				return -EINVAL;
+			}
+		}
+	}
+
+	if (max_bonds < 1 || max_bonds > INT_MAX) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: max_bonds (%d) not in range %d-%d, so it "
+		       "was reset to BOND_DEFAULT_MAX_BONDS (%d)",
+		       max_bonds, 1, INT_MAX, BOND_DEFAULT_MAX_BONDS);
+		max_bonds = BOND_DEFAULT_MAX_BONDS;
+	}
+
+	if (miimon < 0) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: miimon module parameter (%d), "
+		       "not in range 0-%d, so it was reset to %d\n",
+		       miimon, INT_MAX, BOND_LINK_MON_INTERV);
+		miimon = BOND_LINK_MON_INTERV;
+	}
+
+	if (updelay < 0) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: updelay module parameter (%d), "
+		       "not in range 0-%d, so it was reset to 0\n",
+		       updelay, INT_MAX);
+		updelay = 0;
+	}
+
+	if (downdelay < 0) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: downdelay module parameter (%d), "
+		       "not in range 0-%d, so it was reset to 0\n",
+		       downdelay, INT_MAX);
+		downdelay = 0;
+	}
+
+	if ((use_carrier != 0) && (use_carrier != 1)) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: use_carrier module parameter (%d), "
+		       "not of valid value (0/1), so it was set to 1\n",
+		       use_carrier);
+		use_carrier = 1;
+	}
+
+	/* reset values for 802.3ad */
+	if (bond_mode == BOND_MODE_8023AD) {
+		if (!miimon) {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: miimon must be specified, "
+			       "otherwise bonding will not detect link "
+			       "failure, speed and duplex which are "
+			       "essential for 802.3ad operation\n");
+			printk(KERN_WARNING "Forcing miimon to 100msec\n");
+			miimon = 100;
+		}
+	}
+
+	/* reset values for TLB/ALB */
+	if ((bond_mode == BOND_MODE_TLB) ||
+	    (bond_mode == BOND_MODE_ALB)) {
+		if (!miimon) {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: miimon must be specified, "
+			       "otherwise bonding will not detect link "
+			       "failure and link speed which are essential "
+			       "for TLB/ALB load balancing\n");
+			printk(KERN_WARNING "Forcing miimon to 100msec\n");
+			miimon = 100;
+		}
+	}
+
+	if (bond_mode == BOND_MODE_ALB) {
+		printk(KERN_NOTICE DRV_NAME
+		       ": In ALB mode you might experience client "
+		       "disconnections upon reconnection of a link if the "
+		       "bonding module updelay parameter (%d msec) is "
+		       "incompatible with the forwarding delay time of the "
+		       "switch\n",
+		       updelay);
+	}
+
+	if (!miimon) {
+		if (updelay || downdelay) {
+			/* just warn the user the up/down delay will have
+			 * no effect since miimon is zero...
+			 */
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: miimon module parameter not set "
+			       "and updelay (%d) or downdelay (%d) module "
+			       "parameter is set; updelay and downdelay have "
+			       "no effect unless miimon is set\n",
+			       updelay, downdelay);
+		}
+	} else {
+		/* don't allow arp monitoring */
+		if (arp_interval) {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: miimon (%d) and arp_interval (%d) "
+			       "can't be used simultaneously, disabling ARP "
+			       "monitoring\n",
+			       miimon, arp_interval);
+			arp_interval = 0;
+		}
+
+		if ((updelay % miimon) != 0) {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: updelay (%d) is not a multiple "
+			       "of miimon (%d), updelay rounded to %d ms\n",
+			       updelay, miimon, (updelay / miimon) * miimon);
+		}
+
+		updelay /= miimon;
+
+		if ((downdelay % miimon) != 0) {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: downdelay (%d) is not a multiple "
+			       "of miimon (%d), downdelay rounded to %d ms\n",
+			       downdelay, miimon,
+			       (downdelay / miimon) * miimon);
+		}
+
+		downdelay /= miimon;
+	}
+
+	if (arp_interval < 0) {
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: arp_interval module parameter (%d) "
+		       ", not in range 0-%d, so it was reset to %d\n",
+		       arp_interval, INT_MAX, BOND_LINK_ARP_INTERV);
+		arp_interval = BOND_LINK_ARP_INTERV;
+	}
+
+	for (arp_ip_count = 0;
+	     (arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[arp_ip_count];
+	     arp_ip_count++) {
+		/* not complete check, but should be good enough to
+		   catch mistakes */
+		if (!isdigit(arp_ip_target[arp_ip_count][0])) {
+			printk(KERN_WARNING DRV_NAME
+			       ": Warning: bad arp_ip_target module parameter "
+			       "(%s), ARP monitoring will not be performed\n",
+			       arp_ip_target[arp_ip_count]);
+			arp_interval = 0;
+		} else {
+			u32 ip = in_aton(arp_ip_target[arp_ip_count]);
+			arp_target[arp_ip_count] = ip;
+		}
+	}
+
+	if (arp_interval && !arp_ip_count) {
+		/* don't allow arping if no arp_ip_target given... */
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: arp_interval module parameter (%d) "
+		       "specified without providing an arp_ip_target "
+		       "parameter, arp_interval was reset to 0\n",
+		       arp_interval);
+		arp_interval = 0;
+	}
+
+	if (miimon) {
+		printk(KERN_INFO DRV_NAME
+		       ": MII link monitoring set to %d ms\n",
+		       miimon);
+	} else if (arp_interval) {
+		int i;
+
+		printk(KERN_INFO DRV_NAME
+		       ": ARP monitoring set to %d ms with %d target(s):",
+		       arp_interval, arp_ip_count);
+
+		for (i = 0; i < arp_ip_count; i++)
+			printk (" %s", arp_ip_target[i]);
+
+		printk("\n");
+
+	} else {
+		/* miimon and arp_interval not set, we need one so things
+		 * work as expected, see bonding.txt for details
+		 */
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: either miimon or arp_interval and "
+		       "arp_ip_target module parameters must be specified, "
+		       "otherwise bonding will not detect link failures! see "
+		       "bonding.txt for details.\n");
+	}
+
+	if (primary && !USES_PRIMARY(bond_mode)) {
+		/* currently, using a primary only makes sense
+		 * in active backup, TLB or ALB modes
+		 */
+		printk(KERN_WARNING DRV_NAME
+		       ": Warning: %s primary device specified but has no "
+		       "effect in %s mode\n",
+		       primary, bond_mode_name(bond_mode));
+		primary = NULL;
+	}
+
+	/* fill params struct with the proper values */
+	params->mode = bond_mode;
+	params->miimon = miimon;
+	params->arp_interval = arp_interval;
+	params->updelay = updelay;
+	params->downdelay = downdelay;
+	params->use_carrier = use_carrier;
+	params->lacp_fast = lacp_fast;
+	params->primary[0] = 0;
+
+	if (primary) {
+		strncpy(params->primary, primary, IFNAMSIZ);
+		params->primary[IFNAMSIZ - 1] = 0;
+	}
+
+	memcpy(params->arp_targets, arp_target, sizeof(arp_target));
+
+	return 0;
+}
+
+static int __init bonding_init(void)
+{
+	struct bond_params params;
+	int i;
+	int res;
+
+	printk(KERN_INFO "%s", version);
+
+	res = bond_check_params(&params);
+	if (res) {
+		return res;
+	}
+
+	rtnl_lock();
+
+#ifdef CONFIG_PROC_FS
+	bond_create_proc_dir();
+#endif
+
+	for (i = 0; i < max_bonds; i++) {
+		struct net_device *bond_dev;
+
+		bond_dev = alloc_netdev(sizeof(struct bonding), "", ether_setup);
+		if (!bond_dev) {
+			res = -ENOMEM;
+			goto out_err;
+		}
+
+		res = dev_alloc_name(bond_dev, "bond%d");
+		if (res < 0) {
+			free_netdev(bond_dev);
+			goto out_err;
+		}
+
+		/* bond_init() must be called after dev_alloc_name() (for the
+		 * /proc files), but before register_netdevice(), because we
+		 * need to set function pointers.
+		 */
+		res = bond_init(bond_dev, &params);
+		if (res < 0) {
+			free_netdev(bond_dev);
+			goto out_err;
+		}
+
+		SET_MODULE_OWNER(bond_dev);
+
+		res = register_netdevice(bond_dev);
+		if (res < 0) {
+			bond_deinit(bond_dev);
+			free_netdev(bond_dev);
+			goto out_err;
+		}
+	}
+
+	rtnl_unlock();
+	register_netdevice_notifier(&bond_netdev_notifier);
+
+	return 0;
+
+out_err:
+	/* free and unregister all bonds that were successfully added */
+	bond_free_all();
+
+	rtnl_unlock();
+
+	return res;
+}
+
+static void __exit bonding_exit(void)
+{
+	unregister_netdevice_notifier(&bond_netdev_notifier);
+
+	rtnl_lock();
+	bond_free_all();
+	rtnl_unlock();
+}
+
+module_init(bonding_init);
+module_exit(bonding_exit);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION);
+MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others");
+MODULE_SUPPORTED_DEVICE("most ethernet devices");
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */
+
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
new file mode 100644
index 0000000..8c32530
--- /dev/null
+++ b/drivers/net/bonding/bonding.h
@@ -0,0 +1,252 @@
+/*
+ * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
+ *
+ * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
+ * NCM: Network and Communications Management, Inc.
+ *
+ * BUT, I'm the one who modified it for ethernet, so:
+ * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
+ *
+ *	This software may be used and distributed according to the terms
+ *	of the GNU Public License, incorporated herein by reference.
+ *
+ *
+ * 2003/03/18 - Amir Noam <amir.noam at intel dot com>,
+ *		Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Added support for IEEE 802.3ad Dynamic link aggregation mode.
+ *
+ * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and
+ *		Amir Noam <amir.noam at intel dot com>
+ *	- Code beautification and style changes (mainly in comments).
+ *
+ * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Added support for Transmit load balancing mode.
+ *
+ * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Code cleanup and style changes
+ */
+
+#ifndef _LINUX_BONDING_H
+#define _LINUX_BONDING_H
+
+#include <linux/timer.h>
+#include <linux/proc_fs.h>
+#include <linux/if_bonding.h>
+#include "bond_3ad.h"
+#include "bond_alb.h"
+
+#define DRV_VERSION	"2.6.1"
+#define DRV_RELDATE	"October 29, 2004"
+#define DRV_NAME	"bonding"
+#define DRV_DESCRIPTION	"Ethernet Channel Bonding Driver"
+
+#define BOND_MAX_ARP_TARGETS	16
+
+#ifdef BONDING_DEBUG
+#define dprintk(fmt, args...) \
+	printk(KERN_DEBUG     \
+	       DRV_NAME ": %s() %d: " fmt, __FUNCTION__, __LINE__ , ## args )
+#else
+#define dprintk(fmt, args...)
+#endif /* BONDING_DEBUG */
+
+#define IS_UP(dev)					   \
+	      ((((dev)->flags & IFF_UP) == IFF_UP)	&& \
+	       netif_running(dev)			&& \
+	       netif_carrier_ok(dev))
+
+/*
+ * Checks whether bond is ready for transmit.
+ *
+ * Caller must hold bond->lock
+ */
+#define BOND_IS_OK(bond)			     \
+		   (((bond)->dev->flags & IFF_UP) && \
+		    netif_running((bond)->dev)	  && \
+		    ((bond)->slave_cnt > 0))
+
+/*
+ * Checks whether slave is ready for transmit.
+ */
+#define SLAVE_IS_OK(slave)			        \
+		    (((slave)->dev->flags & IFF_UP)  && \
+		     netif_running((slave)->dev)     && \
+		     ((slave)->link == BOND_LINK_UP) && \
+		     ((slave)->state == BOND_STATE_ACTIVE))
+
+
+#define USES_PRIMARY(mode)				\
+		(((mode) == BOND_MODE_ACTIVEBACKUP) ||	\
+		 ((mode) == BOND_MODE_TLB)          ||	\
+		 ((mode) == BOND_MODE_ALB))
+
+/*
+ * Less bad way to call ioctl from within the kernel; this needs to be
+ * done some other way to get the call out of interrupt context.
+ * Needs "ioctl" variable to be supplied by calling context.
+ */
+#define IOCTL(dev, arg, cmd) ({		\
+	int res = 0;			\
+	mm_segment_t fs = get_fs();	\
+	set_fs(get_ds());		\
+	res = ioctl(dev, arg, cmd);	\
+	set_fs(fs);			\
+	res; })
+
+/**
+ * bond_for_each_slave_from - iterate the slaves list from a starting point
+ * @bond:	the bond holding this list.
+ * @pos:	current slave.
+ * @cnt:	counter for max number of moves
+ * @start:	starting point.
+ *
+ * Caller must hold bond->lock
+ */
+#define bond_for_each_slave_from(bond, pos, cnt, start)	\
+	for (cnt = 0, pos = start;				\
+	     cnt < (bond)->slave_cnt;				\
+             cnt++, pos = (pos)->next)
+
+/**
+ * bond_for_each_slave_from_to - iterate the slaves list from start point to stop point
+ * @bond:	the bond holding this list.
+ * @pos:	current slave.
+ * @cnt:	counter for number max of moves
+ * @start:	start point.
+ * @stop:	stop point.
+ *
+ * Caller must hold bond->lock
+ */
+#define bond_for_each_slave_from_to(bond, pos, cnt, start, stop)	\
+	for (cnt = 0, pos = start;					\
+	     ((cnt < (bond)->slave_cnt) && (pos != (stop)->next));	\
+             cnt++, pos = (pos)->next)
+
+/**
+ * bond_for_each_slave - iterate the slaves list from head
+ * @bond:	the bond holding this list.
+ * @pos:	current slave.
+ * @cnt:	counter for max number of moves
+ *
+ * Caller must hold bond->lock
+ */
+#define bond_for_each_slave(bond, pos, cnt)	\
+		bond_for_each_slave_from(bond, pos, cnt, (bond)->first_slave)
+
+
+struct bond_params {
+	int mode;
+	int miimon;
+	int arp_interval;
+	int use_carrier;
+	int updelay;
+	int downdelay;
+	int lacp_fast;
+	char primary[IFNAMSIZ];
+	u32 arp_targets[BOND_MAX_ARP_TARGETS];
+};
+
+struct vlan_entry {
+	struct list_head vlan_list;
+	unsigned short vlan_id;
+};
+
+struct slave {
+	struct net_device *dev; /* first - usefull for panic debug */
+	struct slave *next;
+	struct slave *prev;
+	s16    delay;
+	u32    jiffies;
+	s8     link;    /* one of BOND_LINK_XXXX */
+	s8     state;   /* one of BOND_STATE_XXXX */
+	u32    original_flags;
+	u32    link_failure_count;
+	u16    speed;
+	u8     duplex;
+	u8     perm_hwaddr[ETH_ALEN];
+	struct ad_slave_info ad_info; /* HUGE - better to dynamically alloc */
+	struct tlb_slave_info tlb_info;
+};
+
+/*
+ * Here are the locking policies for the two bonding locks:
+ *
+ * 1) Get bond->lock when reading/writing slave list.
+ * 2) Get bond->curr_slave_lock when reading/writing bond->curr_active_slave.
+ *    (It is unnecessary when the write-lock is put with bond->lock.)
+ * 3) When we lock with bond->curr_slave_lock, we must lock with bond->lock
+ *    beforehand.
+ */
+struct bonding {
+	struct   net_device *dev; /* first - usefull for panic debug */
+	struct   slave *first_slave;
+	struct   slave *curr_active_slave;
+	struct   slave *current_arp_slave;
+	struct   slave *primary_slave;
+	s32      slave_cnt; /* never change this value outside the attach/detach wrappers */
+	rwlock_t lock;
+	rwlock_t curr_slave_lock;
+	struct   timer_list mii_timer;
+	struct   timer_list arp_timer;
+	s8       kill_timers;
+	struct   net_device_stats stats;
+#ifdef CONFIG_PROC_FS
+	struct   proc_dir_entry *proc_entry;
+	char     proc_file_name[IFNAMSIZ];
+#endif /* CONFIG_PROC_FS */
+	struct   list_head bond_list;
+	struct   dev_mc_list *mc_list;
+	u16      flags;
+	struct   ad_bond_info ad_info;
+	struct   alb_bond_info alb_info;
+	struct   bond_params params;
+	struct   list_head vlan_list;
+	struct   vlan_group *vlgrp;
+};
+
+/**
+ * Returns NULL if the net_device does not belong to any of the bond's slaves
+ *
+ * Caller must hold bond lock for read
+ */
+extern inline struct slave *bond_get_slave_by_dev(struct bonding *bond, struct net_device *slave_dev)
+{
+	struct slave *slave = NULL;
+	int i;
+
+	bond_for_each_slave(bond, slave, i) {
+		if (slave->dev == slave_dev) {
+			break;
+		}
+	}
+
+	return slave;
+}
+
+extern inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
+{
+	if (!slave || !slave->dev->master) {
+		return NULL;
+	}
+
+	return (struct bonding *)slave->dev->master->priv;
+}
+
+extern inline void bond_set_slave_inactive_flags(struct slave *slave)
+{
+	slave->state = BOND_STATE_BACKUP;
+	slave->dev->flags |= IFF_NOARP;
+}
+
+extern inline void bond_set_slave_active_flags(struct slave *slave)
+{
+	slave->state = BOND_STATE_ACTIVE;
+	slave->dev->flags &= ~IFF_NOARP;
+}
+
+struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr);
+int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
+
+#endif /* _LINUX_BONDING_H */
+