aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wan/sdla_ppp.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wan/sdla_ppp.c')
-rw-r--r--drivers/net/wan/sdla_ppp.c3430
1 files changed, 0 insertions, 3430 deletions
diff --git a/drivers/net/wan/sdla_ppp.c b/drivers/net/wan/sdla_ppp.c
deleted file mode 100644
index a4b489c..0000000
--- a/drivers/net/wan/sdla_ppp.c
+++ /dev/null
@@ -1,3430 +0,0 @@
-/*****************************************************************************
-* sdla_ppp.c WANPIPE(tm) Multiprotocol WAN Link Driver. PPP module.
-*
-* Author: Nenad Corbic <ncorbic@sangoma.com>
-*
-* Copyright: (c) 1995-2001 Sangoma Technologies Inc.
-*
-* 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.
-* ============================================================================
-* Feb 28, 2001 Nenad Corbic o Updated if_tx_timeout() routine for
-* 2.4.X kernels.
-* Nov 29, 2000 Nenad Corbic o Added the 2.4.x kernel support:
-* get_ip_address() function has moved
-* into the ppp_poll() routine. It cannot
-* be called from an interrupt.
-* Nov 07, 2000 Nenad Corbic o Added security features for UDP debugging:
-* Deny all and specify allowed requests.
-* May 02, 2000 Nenad Corbic o Added the dynamic interface shutdown
-* option. When the link goes down, the
-* network interface IFF_UP flag is reset.
-* Mar 06, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery.
-* Feb 25, 2000 Nenad Corbic o Fixed the FT1 UDP debugger problem.
-* Feb 09, 2000 Nenad Coribc o Shutdown bug fix. update() was called
-* with NULL dev pointer: no check.
-* Jan 24, 2000 Nenad Corbic o Disabled use of CMD complete inter.
-* Dev 15, 1999 Nenad Corbic o Fixed up header files for 2.0.X kernels
-* Oct 25, 1999 Nenad Corbic o Support for 2.0.X kernels
-* Moved dynamic route processing into
-* a polling routine.
-* Oct 07, 1999 Nenad Corbic o Support for S514 PCI card.
-* Gideon Hack o UPD and Updates executed using timer interrupt
-* Sep 10, 1999 Nenad Corbic o Fixed up the /proc statistics
-* Jul 20, 1999 Nenad Corbic o Remove the polling routines and use
-* interrupts instead.
-* Sep 17, 1998 Jaspreet Singh o Updates for 2.2.X Kernels.
-* Aug 13, 1998 Jaspreet Singh o Improved Line Tracing.
-* Jun 22, 1998 David Fong o Added remote IP address assignment
-* Mar 15, 1998 Alan Cox o 2.1.8x basic port.
-* Apr 16, 1998 Jaspreet Singh o using htons() for the IPX protocol.
-* Dec 09, 1997 Jaspreet Singh o Added PAP and CHAP.
-* o Implemented new routines like
-* ppp_set_inbnd_auth(), ppp_set_outbnd_auth(),
-* tokenize() and strstrip().
-* Nov 27, 1997 Jaspreet Singh o Added protection against enabling of irqs
-* while they have been disabled.
-* Nov 24, 1997 Jaspreet Singh o Fixed another RACE condition caused by
-* disabling and enabling of irqs.
-* o Added new counters for stats on disable/enable
-* IRQs.
-* Nov 10, 1997 Jaspreet Singh o Initialized 'skb->mac.raw' to 'skb->data'
-* before every netif_rx().
-* o Free up the device structure in del_if().
-* Nov 07, 1997 Jaspreet Singh o Changed the delay to zero for Line tracing
-* command.
-* Oct 20, 1997 Jaspreet Singh o Added hooks in for Router UP time.
-* Oct 16, 1997 Jaspreet Singh o The critical flag is used to maintain flow
-* control by avoiding RACE conditions. The
-* cli() and restore_flags() are taken out.
-* A new structure, "ppp_private_area", is added
-* to provide Driver Statistics.
-* Jul 21, 1997 Jaspreet Singh o Protected calls to sdla_peek() by adding
-* save_flags(), cli() and restore_flags().
-* Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets
-* o Added ability to discard mulitcast and
-* broacast source addressed packets.
-* Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities
-* New case (0x25) statement in if_send routine.
-* Added a global variable rCount to keep track
-* of FT1 status enabled on the board.
-* May 22, 1997 Jaspreet Singh o Added change in the PPP_SET_CONFIG command for
-* 508 card to reflect changes in the new
-* ppp508.sfm for supporting:continous transmission
-* of Configure-Request packets without receiving a
-* reply
-* OR-ed 0x300 to conf_flags
-* o Changed connect_tmout from 900 to 0
-* May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple boards
-* Apr 25, 1997 Farhan Thawar o added UDP Management stuff
-* Mar 11, 1997 Farhan Thawar Version 3.1.1
-* o fixed (+1) bug in rx_intr()
-* o changed if_send() to return 0 if
-* wandev.critical() is true
-* o free socket buffer in if_send() if
-* returning 0
-* Jan 15, 1997 Gene Kozin Version 3.1.0
-* o implemented exec() entry point
-* Jan 06, 1997 Gene Kozin Initial version.
-*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/jiffies.h> /* time_after() macro */
-
-
-#include <asm/uaccess.h>
-#include <linux/inetdevice.h>
-#include <linux/netdevice.h>
-
-#include <linux/if.h>
-#include <linux/sdla_ppp.h> /* PPP firmware API definitions */
-#include <linux/sdlasfm.h> /* S514 Type Definition */
-/****** Defines & Macros ****************************************************/
-
-#define PPP_DFLT_MTU 1500 /* default MTU */
-#define PPP_MAX_MTU 4000 /* maximum MTU */
-#define PPP_HDR_LEN 1
-
-#define MAX_IP_ERRORS 100
-
-#define CONNECT_TIMEOUT (90*HZ) /* link connection timeout */
-#define HOLD_DOWN_TIME (5*HZ) /* link hold down time : Changed from 30 to 5 */
-
-/* For handle_IPXWAN() */
-#define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b)))
-
-/* Macro for enabling/disabling debugging comments */
-//#define NEX_DEBUG
-#ifdef NEX_DEBUG
-#define NEX_PRINTK(format, a...) printk(format, ## a)
-#else
-#define NEX_PRINTK(format, a...)
-#endif /* NEX_DEBUG */
-
-#define DCD(a) ( a & 0x08 ? "HIGH" : "LOW" )
-#define CTS(a) ( a & 0x20 ? "HIGH" : "LOW" )
-#define LCP(a) ( a == 0x09 ? "OPEN" : "CLOSED" )
-#define IP(a) ( a == 0x09 ? "ENABLED" : "DISABLED" )
-
-#define TMR_INT_ENABLED_UPDATE 0x01
-#define TMR_INT_ENABLED_PPP_EVENT 0x02
-#define TMR_INT_ENABLED_UDP 0x04
-#define TMR_INT_ENABLED_CONFIG 0x20
-
-/* Set Configuraton Command Definitions */
-#define PERCENT_TX_BUFF 60
-#define TIME_BETWEEN_CONF_REQ 30
-#define TIME_BETWEEN_PAP_CHAP_REQ 30
-#define WAIT_PAP_CHAP_WITHOUT_REPLY 300
-#define WAIT_AFTER_DCD_CTS_LOW 5
-#define TIME_DCD_CTS_LOW_AFTER_LNK_DOWN 10
-#define WAIT_DCD_HIGH_AFTER_ENABLE_COMM 900
-#define MAX_CONF_REQ_WITHOUT_REPLY 10
-#define MAX_TERM_REQ_WITHOUT_REPLY 2
-#define NUM_CONF_NAK_WITHOUT_REPLY 5
-#define NUM_AUTH_REQ_WITHOUT_REPLY 10
-
-#define END_OFFSET 0x1F0
-
-
-/******Data Structures*****************************************************/
-
-/* This structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following
- * structure will incorporate the card structure along with PPP specific data
- */
-
-typedef struct ppp_private_area
-{
- struct net_device *slave;
- sdla_t* card;
- unsigned long router_start_time; /*router start time in sec */
- unsigned long tick_counter; /*used for 5 second counter*/
- unsigned mc; /*multicast support on or off*/
- unsigned char enable_IPX;
- unsigned long network_number;
- unsigned char pap;
- unsigned char chap;
- unsigned char sysname[31]; /* system name for in-bnd auth*/
- unsigned char userid[511]; /* list of user ids */
- unsigned char passwd[511]; /* list of passwords */
- unsigned protocol; /* SKB Protocol */
- u32 ip_local; /* Local IP Address */
- u32 ip_remote; /* remote IP Address */
-
- u32 ip_local_tmp;
- u32 ip_remote_tmp;
-
- unsigned char timer_int_enabled; /* Who enabled the timer inter*/
- unsigned char update_comms_stats; /* Used by update function */
- unsigned long curr_trace_addr; /* Trace information */
- unsigned long start_trace_addr;
- unsigned long end_trace_addr;
-
- unsigned char interface_down; /* Brind down interface when channel
- goes down */
- unsigned long config_wait_timeout; /* After if_open() if in dynamic if mode,
- wait a few seconds before configuring */
-
- unsigned short udp_pkt_lgth;
- char udp_pkt_src;
- char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
-
- /* PPP specific statistics */
-
- if_send_stat_t if_send_stat;
- rx_intr_stat_t rx_intr_stat;
- pipe_mgmt_stat_t pipe_mgmt_stat;
-
- unsigned long router_up_time;
-
- /* Polling work queue entry. Each interface
- * has its own work queue entry, which is used
- * to defer events from the interrupt */
- struct work_struct poll_work;
- struct timer_list poll_delay_timer;
-
- u8 gateway;
- u8 config_ppp;
- u8 ip_error;
-
-}ppp_private_area_t;
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/****** Function Prototypes *************************************************/
-
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int update(struct wan_device *wandev);
-static int new_if(struct wan_device *wandev, struct net_device *dev,
- wanif_conf_t *conf);
-static int del_if(struct wan_device *wandev, struct net_device *dev);
-
-/* WANPIPE-specific entry points */
-static int wpp_exec (struct sdla *card, void *u_cmd, void *u_data);
-
-/* Network device interface */
-static int if_init(struct net_device *dev);
-static int if_open(struct net_device *dev);
-static int if_close(struct net_device *dev);
-static int if_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type,
- void *daddr, void *saddr, unsigned len);
-
-static void if_tx_timeout(struct net_device *dev);
-
-static int if_rebuild_hdr(struct sk_buff *skb);
-static struct net_device_stats *if_stats(struct net_device *dev);
-static int if_send(struct sk_buff *skb, struct net_device *dev);
-
-
-/* PPP firmware interface functions */
-static int ppp_read_version(sdla_t *card, char *str);
-static int ppp_set_outbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area);
-static int ppp_set_inbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area);
-static int ppp_configure(sdla_t *card, void *data);
-static int ppp_set_intr_mode(sdla_t *card, unsigned char mode);
-static int ppp_comm_enable(sdla_t *card);
-static int ppp_comm_disable(sdla_t *card);
-static int ppp_comm_disable_shutdown(sdla_t *card);
-static int ppp_get_err_stats(sdla_t *card);
-static int ppp_send(sdla_t *card, void *data, unsigned len, unsigned proto);
-static int ppp_error(sdla_t *card, int err, ppp_mbox_t *mb);
-
-static void wpp_isr(sdla_t *card);
-static void rx_intr(sdla_t *card);
-static void event_intr(sdla_t *card);
-static void timer_intr(sdla_t *card);
-
-/* Background polling routines */
-static void process_route(sdla_t *card);
-static void retrigger_comm(sdla_t *card);
-
-/* Miscellaneous functions */
-static int read_info( sdla_t *card );
-static int read_connection_info (sdla_t *card);
-static void remove_route( sdla_t *card );
-static int config508(struct net_device *dev, sdla_t *card);
-static void show_disc_cause(sdla_t * card, unsigned cause);
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev,
- ppp_private_area_t *ppp_priv_area);
-static void init_ppp_tx_rx_buff( sdla_t *card );
-static int intr_test( sdla_t *card );
-static int udp_pkt_type( struct sk_buff *skb , sdla_t *card);
-static void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area);
-static void init_global_statistics( sdla_t *card );
-static int tokenize(char *str, char **tokens);
-static char* strstrip(char *str, char *s);
-static int chk_bcast_mcast_addr(sdla_t* card, struct net_device* dev,
- struct sk_buff *skb);
-
-static int config_ppp (sdla_t *);
-static void ppp_poll(struct net_device *dev);
-static void trigger_ppp_poll(struct net_device *dev);
-static void ppp_poll_delay (unsigned long dev_ptr);
-
-
-static int Read_connection_info;
-static int Intr_test_counter;
-static unsigned short available_buffer_space;
-
-
-/* IPX functions */
-static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number,
- unsigned char incoming);
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_PX,
- unsigned long network_number, unsigned short proto);
-
-/* Lock Functions */
-static void s508_lock (sdla_t *card, unsigned long *smp_flags);
-static void s508_unlock (sdla_t *card, unsigned long *smp_flags);
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- ppp_private_area_t* ppp_priv_area );
-static unsigned short calc_checksum (char *data, int len);
-static void disable_comm (sdla_t *card);
-static int detect_and_fix_tx_bug (sdla_t *card);
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * PPP protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup. At this
- * point adapter is completely initialized and firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the adapter data space.
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-int wpp_init(sdla_t *card, wandev_conf_t *conf)
-{
- ppp_flags_t *flags;
- union
- {
- char str[80];
- } u;
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_PPP) {
-
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
-
- }
-
- /* Initialize miscellaneous pointers to structures on the adapter */
- switch (card->hw.type) {
-
- case SDLA_S508:
- card->mbox =(void*)(card->hw.dpmbase + PPP508_MB_OFFS);
- card->flags=(void*)(card->hw.dpmbase + PPP508_FLG_OFFS);
- break;
-
- case SDLA_S514:
- card->mbox =(void*)(card->hw.dpmbase + PPP514_MB_OFFS);
- card->flags=(void*)(card->hw.dpmbase + PPP514_FLG_OFFS);
- break;
-
- default:
- return -EINVAL;
-
- }
- flags = card->flags;
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
- if (ppp_read_version(card, NULL) || ppp_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: running PPP firmware v%s\n",card->devname, u.str);
- /* Adjust configuration and set defaults */
- card->wandev.mtu = (conf->mtu) ?
- min_t(unsigned int, conf->mtu, PPP_MAX_MTU) : PPP_DFLT_MTU;
-
- card->wandev.bps = conf->bps;
- card->wandev.interface = conf->interface;
- card->wandev.clocking = conf->clocking;
- card->wandev.station = conf->station;
- card->isr = &wpp_isr;
- card->poll = NULL;
- card->exec = &wpp_exec;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = &del_if;
- card->wandev.udp_port = conf->udp_port;
- card->wandev.ttl = conf->ttl;
- card->wandev.state = WAN_DISCONNECTED;
- card->disable_comm = &disable_comm;
- card->irq_dis_if_send_count = 0;
- card->irq_dis_poll_count = 0;
- card->u.p.authenticator = conf->u.ppp.authenticator;
- card->u.p.ip_mode = conf->u.ppp.ip_mode ?
- conf->u.ppp.ip_mode : WANOPT_PPP_STATIC;
- card->TracingEnabled = 0;
- Read_connection_info = 1;
-
- /* initialize global statistics */
- init_global_statistics( card );
-
-
-
- if (!card->configured){
- int err;
-
- Intr_test_counter = 0;
- err = intr_test(card);
-
- if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
- printk("%s: Interrupt Test Failed, Counter: %i\n",
- card->devname, Intr_test_counter);
- printk( "%s: Please choose another interrupt\n",card->devname);
- return -EIO;
- }
-
- printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n",
- card->devname, Intr_test_counter);
- card->configured = 1;
- }
-
- ppp_set_intr_mode(card, PPP_INTR_TIMER);
-
- /* Turn off the transmit and timer interrupt */
- flags->imask &= ~PPP_INTR_TIMER;
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics.
- */
-static int update(struct wan_device *wandev)
-{
- sdla_t* card = wandev->private;
- struct net_device* dev;
- volatile ppp_private_area_t *ppp_priv_area;
- ppp_flags_t *flags = card->flags;
- unsigned long timeout;
-
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if (wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- /* Shutdown bug fix. This function can be
- * called with NULL dev pointer during
- * shutdown
- */
- if ((dev=card->wandev.dev) == NULL){
- return -ENODEV;
- }
-
- if ((ppp_priv_area=dev->priv) == NULL){
- return -ENODEV;
- }
-
- ppp_priv_area->update_comms_stats = 2;
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UPDATE;
- flags->imask |= PPP_INTR_TIMER;
-
- /* wait a maximum of 1 second for the statistics to be updated */
- timeout = jiffies;
- for(;;) {
- if(ppp_priv_area->update_comms_stats == 0){
- break;
- }
- if (time_after(jiffies, timeout + 1 * HZ)){
- ppp_priv_area->update_comms_stats = 0;
- ppp_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- return -EAGAIN;
- }
- }
-
- return 0;
-}
-
-/*============================================================================
- * Create new logical channel.
- * This routine is called by the router when ROUTER_IFNEW IOCTL is being
- * handled.
- * o parse media- and hardware-specific configuration
- * o make sure that a new channel can be created
- * o allocate resources, if necessary
- * o prepare network device structure for registaration.
- *
- * Return: 0 o.k.
- * < 0 failure (channel will not be created)
- */
-static int new_if(struct wan_device *wandev, struct net_device *dev,
- wanif_conf_t *conf)
-{
- sdla_t *card = wandev->private;
- ppp_private_area_t *ppp_priv_area;
-
- if (wandev->ndev)
- return -EEXIST;
-
-
- printk(KERN_INFO "%s: Configuring Interface: %s\n",
- card->devname, conf->name);
-
- if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
-
- printk(KERN_INFO "%s: Invalid interface name!\n",
- card->devname);
- return -EINVAL;
-
- }
-
- /* allocate and initialize private data */
- ppp_priv_area = kmalloc(sizeof(ppp_private_area_t), GFP_KERNEL);
-
- if( ppp_priv_area == NULL )
- return -ENOMEM;
-
- memset(ppp_priv_area, 0, sizeof(ppp_private_area_t));
-
- ppp_priv_area->card = card;
-
- /* initialize data */
- strcpy(card->u.p.if_name, conf->name);
-
- /* initialize data in ppp_private_area structure */
-
- init_ppp_priv_struct( ppp_priv_area );
-
- ppp_priv_area->mc = conf->mc;
- ppp_priv_area->pap = conf->pap;
- ppp_priv_area->chap = conf->chap;
-
- /* Option to bring down the interface when
- * the link goes down */
- if (conf->if_down){
- set_bit(DYN_OPT_ON,&ppp_priv_area->interface_down);
- printk("%s: Dynamic interface configuration enabled\n",
- card->devname);
- }
-
- /* If no user ids are specified */
- if(!strlen(conf->userid) && (ppp_priv_area->pap||ppp_priv_area->chap)){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- /* If no passwords are specified */
- if(!strlen(conf->passwd) && (ppp_priv_area->pap||ppp_priv_area->chap)){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- if(strlen(conf->sysname) > 31){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- /* If no system name is specified */
- if(!strlen(conf->sysname) && (card->u.p.authenticator)){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- /* copy the data into the ppp private structure */
- memcpy(ppp_priv_area->userid, conf->userid, strlen(conf->userid));
- memcpy(ppp_priv_area->passwd, conf->passwd, strlen(conf->passwd));
- memcpy(ppp_priv_area->sysname, conf->sysname, strlen(conf->sysname));
-
-
- ppp_priv_area->enable_IPX = conf->enable_IPX;
- if (conf->network_number){
- ppp_priv_area->network_number = conf->network_number;
- }else{
- ppp_priv_area->network_number = 0xDEADBEEF;
- }
-
- /* Tells us that if this interface is a
- * gateway or not */
- if ((ppp_priv_area->gateway = conf->gateway) == WANOPT_YES){
- printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
- card->devname,card->u.p.if_name);
- }
-
- /* prepare network device data space for registration */
- strcpy(dev->name,card->u.p.if_name);
-
- dev->init = &if_init;
- dev->priv = ppp_priv_area;
- dev->mtu = min_t(unsigned int, dev->mtu, card->wandev.mtu);
-
- /* Initialize the polling work routine */
- INIT_WORK(&ppp_priv_area->poll_work, (void*)(void*)ppp_poll, dev);
-
- /* Initialize the polling delay timer */
- init_timer(&ppp_priv_area->poll_delay_timer);
- ppp_priv_area->poll_delay_timer.data = (unsigned long)dev;
- ppp_priv_area->poll_delay_timer.function = ppp_poll_delay;
-
-
- /* Since we start with dummy IP addresses we can say
- * that route exists */
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/*============================================================================
- * Delete logical channel.
- */
-static int del_if(struct wan_device *wandev, struct net_device *dev)
-{
- return 0;
-}
-
-static void disable_comm (sdla_t *card)
-{
- ppp_comm_disable_shutdown(card);
- return;
-}
-
-/****** WANPIPE-specific entry points ***************************************/
-
-/*============================================================================
- * Execute adapter interface command.
- */
-
-//FIXME: Why do we need this ????
-static int wpp_exec(struct sdla *card, void *u_cmd, void *u_data)
-{
- ppp_mbox_t *mbox = card->mbox;
- int len;
-
- if (copy_from_user((void*)&mbox->cmd, u_cmd, sizeof(ppp_cmd_t)))
- return -EFAULT;
-
- len = mbox->cmd.length;
-
- if (len) {
-
- if( copy_from_user((void*)&mbox->data, u_data, len))
- return -EFAULT;
-
- }
-
- /* execute command */
- if (!sdla_exec(mbox))
- return -EIO;
-
- /* return result */
- if( copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(ppp_cmd_t)))
- return -EFAULT;
- len = mbox->cmd.length;
-
- if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len))
- return -EFAULT;
-
- return 0;
-}
-
-/****** Network Device Interface ********************************************/
-
-/*============================================================================
- * Initialize Linux network interface.
- *
- * This routine is called only once for each interface, during Linux network
- * interface registration. Returning anything but zero will fail interface
- * registration.
- */
-static int if_init(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- struct wan_device *wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = &if_header;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- dev->tx_timeout = &if_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /* Initialize media-specific parameters */
- dev->type = ARPHRD_PPP; /* ARP h/w type */
- dev->flags |= IFF_POINTOPOINT;
- dev->flags |= IFF_NOARP;
-
- /* Enable Mulitcasting if specified by user*/
- if (ppp_priv_area->mc == WANOPT_YES){
- dev->flags |= IFF_MULTICAST;
- }
-
- dev->mtu = wandev->mtu;
- dev->hard_header_len = PPP_HDR_LEN; /* media header length */
-
- /* Initialize hardware parameters (just for reference) */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
-
- /* Set transmit buffer queue length */
- dev->tx_queue_len = 100;
- SET_MODULE_OWNER(dev);
-
- return 0;
-}
-
-/*============================================================================
- * Open network interface.
- * o enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-static int if_open(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- struct timeval tv;
- //unsigned long smp_flags;
-
- if (netif_running(dev))
- return -EBUSY;
-
- wanpipe_open(card);
-
- netif_start_queue(dev);
-
- do_gettimeofday( &tv );
- ppp_priv_area->router_start_time = tv.tv_sec;
-
- /* We cannot configure the card here because we don't
- * have access to the interface IP addresses.
- * Once the interface initilization is complete, we will be
- * able to access the IP addresses. Therefore,
- * configure the ppp link in the poll routine */
- set_bit(0,&ppp_priv_area->config_ppp);
- ppp_priv_area->config_wait_timeout=jiffies;
-
- /* Start the PPP configuration after 1sec delay.
- * This will give the interface initilization time
- * to finish its configuration */
- mod_timer(&ppp_priv_area->poll_delay_timer, jiffies + HZ);
- return 0;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last open, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
-
- netif_stop_queue(dev);
- wanpipe_close(card);
-
- del_timer (&ppp_priv_area->poll_delay_timer);
- return 0;
-}
-
-/*============================================================================
- * Build media header.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol' field of
- * the socket buffer, so that we don't forget it. If packet type is not
- * supported, set skb->protocol to 0 and discard packet later.
- *
- * Return: media header length.
- */
-static int if_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
-{
- switch (type)
- {
- case ETH_P_IP:
- case ETH_P_IPX:
- skb->protocol = htons(type);
- break;
-
- default:
- skb->protocol = 0;
- }
-
- return PPP_HDR_LEN;
-}
-
-/*============================================================================
- * Re-build media header.
- *
- * Return: 1 physical address resolved.
- * 0 physical address not resolved
- */
-static int if_rebuild_hdr (struct sk_buff *skb)
-{
- struct net_device *dev = skb->dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
-
- printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
- card->devname, dev->name);
- return 1;
-}
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- ppp_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- ++ chan->if_send_stat.if_send_tbusy;
- ++card->wandev.stats.collisions;
-
- printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
- ++chan->if_send_stat.if_send_tbusy_timeout;
- netif_wake_queue (dev);
-}
-
-
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- * transmit from overlapping.
- * o check link state. If link is not up, then drop the packet.
- * o execute adapter send command.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- * protocol stack and can be used for flow control with protocol layer.
- */
-static int if_send (struct sk_buff *skb, struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- unsigned char *sendpacket;
- unsigned long smp_flags;
- ppp_flags_t *flags = card->flags;
- int udp_type;
- int err=0;
-
- ++ppp_priv_area->if_send_stat.if_send_entry;
-
- netif_stop_queue(dev);
-
- if (skb == NULL) {
-
- /* If we get here, some higher layer thinks we've missed an
- * tx-done interrupt.
- */
- printk(KERN_INFO "%s: interface %s got kicked!\n",
- card->devname, dev->name);
-
- ++ppp_priv_area->if_send_stat.if_send_skb_null;
-
- netif_wake_queue(dev);
- return 0;
- }
-
- sendpacket = skb->data;
-
- udp_type = udp_pkt_type( skb, card );
-
-
- if (udp_type == UDP_PTPIPE_TYPE){
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
- ppp_priv_area)){
- flags->imask |= PPP_INTR_TIMER;
- }
- ++ppp_priv_area->if_send_stat.if_send_PIPE_request;
- netif_start_queue(dev);
- return 0;
- }
-
- /* Check for broadcast and multicast addresses
- * If found, drop (deallocate) a packet and return.
- */
- if(chk_bcast_mcast_addr(card, dev, skb)){
- ++card->wandev.stats.tx_dropped;
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
-
-
- if(card->hw.type != SDLA_S514){
- s508_lock(card,&smp_flags);
- }
-
- if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
-
- printk(KERN_INFO "%s: Critical in if_send: %lx\n",
- card->wandev.name,card->wandev.critical);
-
- ++card->wandev.stats.tx_dropped;
- ++ppp_priv_area->if_send_stat.if_send_critical_non_ISR;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
-
- if (card->wandev.state != WAN_CONNECTED) {
-
- ++ppp_priv_area->if_send_stat.if_send_wan_disconnected;
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
-
- } else if (!skb->protocol) {
- ++ppp_priv_area->if_send_stat.if_send_protocol_error;
- ++card->wandev.stats.tx_errors;
- netif_start_queue(dev);
-
- } else {
-
- /*If it's IPX change the network numbers to 0 if they're ours.*/
- if( skb->protocol == htons(ETH_P_IPX) ) {
- if(ppp_priv_area->enable_IPX) {
- switch_net_numbers( skb->data,
- ppp_priv_area->network_number, 0);
- } else {
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
- }
-
- if (ppp_send(card, skb->data, skb->len, skb->protocol)) {
- netif_stop_queue(dev);
- ++ppp_priv_area->if_send_stat.if_send_adptr_bfrs_full;
- ++ppp_priv_area->if_send_stat.if_send_tx_int_enabled;
- } else {
- ++ppp_priv_area->if_send_stat.if_send_bfr_passed_to_adptr;
- ++card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += skb->len;
- netif_start_queue(dev);
- dev->trans_start = jiffies;
- }
- }
-
-if_send_exit_crit:
-
- if (!(err=netif_queue_stopped(dev))){
- dev_kfree_skb_any(skb);
- }else{
- ppp_priv_area->tick_counter = jiffies;
- flags->imask |= PPP_INTR_TXRDY; /* unmask Tx interrupts */
- }
-
- clear_bit(SEND_CRIT,&card->wandev.critical);
- if(card->hw.type != SDLA_S514){
- s508_unlock(card,&smp_flags);
- }
-
- return err;
-}
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- ppp_private_area_t* ppp_priv_area )
-{
- int udp_pkt_stored = 0;
-
- if(!ppp_priv_area->udp_pkt_lgth && (skb->len<=MAX_LGTH_UDP_MGNT_PKT)){
- ppp_priv_area->udp_pkt_lgth = skb->len;
- ppp_priv_area->udp_pkt_src = udp_pkt_src;
- memcpy(ppp_priv_area->udp_pkt_data, skb->data, skb->len);
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UDP;
- ppp_priv_area->protocol = skb->protocol;
- udp_pkt_stored = 1;
- }else{
- if (skb->len > MAX_LGTH_UDP_MGNT_PKT){
- printk(KERN_INFO "%s: PIPEMON UDP request too long : %i\n",
- card->devname, skb->len);
- }else{
- printk(KERN_INFO "%s: PIPEMON UPD request already pending\n",
- card->devname);
- }
- ppp_priv_area->udp_pkt_lgth = 0;
- }
-
- if(udp_pkt_src == UDP_PKT_FRM_STACK){
- dev_kfree_skb_any(skb);
- }else{
- dev_kfree_skb_any(skb);
- }
-
- return(udp_pkt_stored);
-}
-
-
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return length of reply.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
- unsigned short len, udp_length, temp, ip_length;
- unsigned long ip_temp;
- int even_bound = 0;
- ppp_udp_pkt_t *p_udp_pkt = (ppp_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
- /* fill in UDP reply */
- p_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-
- /* fill in UDP length */
- udp_length = sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
-
- /* put it on an even boundary */
- if ( udp_length & 0x0001 ) {
- udp_length += 1;
- len += 1;
- even_bound=1;
- }
-
- temp = (udp_length<<8)|(udp_length>>8);
- p_udp_pkt->udp_pkt.udp_length = temp;
-
-
- /* swap UDP ports */
- temp = p_udp_pkt->udp_pkt.udp_src_port;
- p_udp_pkt->udp_pkt.udp_src_port =
- p_udp_pkt->udp_pkt.udp_dst_port;
- p_udp_pkt->udp_pkt.udp_dst_port = temp;
-
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
- /* calculate UDP checksum */
- p_udp_pkt->udp_pkt.udp_checksum = 0;
- p_udp_pkt->udp_pkt.udp_checksum =
- calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = udp_length + sizeof(ip_pkt_t);
- temp = (ip_length<<8)|(ip_length>>8);
- p_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = p_udp_pkt->ip_pkt.ip_src_address;
- p_udp_pkt->ip_pkt.ip_src_address = p_udp_pkt->ip_pkt.ip_dst_address;
- p_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
- /* fill in IP checksum */
- p_udp_pkt->ip_pkt.hdr_checksum = 0;
- p_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t));
-
- return len;
-
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
- unsigned short temp;
- unsigned long sum=0;
- int i;
-
- for( i = 0; i <len; i+=2 ) {
- memcpy(&temp,&data[i],2);
- sum += (unsigned long)temp;
- }
-
- while (sum >> 16 ) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
-
- temp = (unsigned short)sum;
- temp = ~temp;
-
- if( temp == 0 )
- temp = 0xffff;
-
- return temp;
-}
-
-/*
- If incoming is 0 (outgoing)- if the net numbers is ours make it 0
- if incoming is 1 - if the net number is 0 make it ours
-
-*/
-static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming)
-{
- unsigned long pnetwork_number;
-
- pnetwork_number = (unsigned long)((sendpacket[6] << 24) +
- (sendpacket[7] << 16) + (sendpacket[8] << 8) +
- sendpacket[9]);
-
- if (!incoming) {
- //If the destination network number is ours, make it 0
- if( pnetwork_number == network_number) {
- sendpacket[6] = sendpacket[7] = sendpacket[8] =
- sendpacket[9] = 0x00;
- }
- } else {
- //If the incoming network is 0, make it ours
- if( pnetwork_number == 0) {
- sendpacket[6] = (unsigned char)(network_number >> 24);
- sendpacket[7] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[8] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[9] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-
-
- pnetwork_number = (unsigned long)((sendpacket[18] << 24) +
- (sendpacket[19] << 16) + (sendpacket[20] << 8) +
- sendpacket[21]);
-
- if( !incoming ) {
- //If the source network is ours, make it 0
- if( pnetwork_number == network_number) {
- sendpacket[18] = sendpacket[19] = sendpacket[20] =
- sendpacket[21] = 0x00;
- }
- } else {
- //If the source network is 0, make it ours
- if( pnetwork_number == 0 ) {
- sendpacket[18] = (unsigned char)(network_number >> 24);
- sendpacket[19] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[20] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[21] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-} /* switch_net_numbers */
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct net_device_stats.
- */
-static struct net_device_stats *if_stats(struct net_device *dev)
-{
-
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t* card;
-
- if( ppp_priv_area == NULL )
- return NULL;
-
- card = ppp_priv_area->card;
- return &card->wandev.stats;
-}
-
-/****** PPP Firmware Interface Functions ************************************/
-
-/*============================================================================
- * Read firmware code version.
- * Put code version as ASCII string in str.
- */
-static int ppp_read_version(sdla_t *card, char *str)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_READ_CODE_VERSION;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
-
- ppp_error(card, err, mb);
-
- else if (str) {
-
- int len = mb->cmd.length;
-
- memcpy(str, mb->data, len);
- str[len] = '\0';
-
- }
-
- return err;
-}
-/*===========================================================================
- * Set Out-Bound Authentication.
-*/
-static int ppp_set_outbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- memset(&mb->data, 0, (strlen(ppp_priv_area->userid) +
- strlen(ppp_priv_area->passwd) + 2 ) );
- memcpy(mb->data, ppp_priv_area->userid, strlen(ppp_priv_area->userid));
- memcpy((mb->data + strlen(ppp_priv_area->userid) + 1),
- ppp_priv_area->passwd, strlen(ppp_priv_area->passwd));
-
- mb->cmd.length = strlen(ppp_priv_area->userid) +
- strlen(ppp_priv_area->passwd) + 2 ;
-
- mb->cmd.command = PPP_SET_OUTBOUND_AUTH;
-
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
- return err;
-}
-
-/*===========================================================================
- * Set In-Bound Authentication.
-*/
-static int ppp_set_inbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area)
-{
- ppp_mbox_t *mb = card->mbox;
- int err, i;
- char* user_tokens[32];
- char* pass_tokens[32];
- int userids, passwds;
- int add_ptr;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- memset(&mb->data, 0, 1008);
- memcpy(mb->data, ppp_priv_area->sysname,
- strlen(ppp_priv_area->sysname));
-
- /* Parse the userid string and the password string and build a string
- to copy it to the data area of the command structure. The string
- will look like "SYS_NAME<NULL>USER1<NULL>PASS1<NULL>USER2<NULL>PASS2
- ....<NULL> "
- */
- userids = tokenize( ppp_priv_area->userid, user_tokens);
- passwds = tokenize( ppp_priv_area->passwd, pass_tokens);
-
- if (userids != passwds){
- printk(KERN_INFO "%s: Number of passwords does not equal the number of user ids\n", card->devname);
- return 1;
- }
-
- add_ptr = strlen(ppp_priv_area->sysname) + 1;
- for (i=0; i<userids; i++){
- memcpy((mb->data + add_ptr), user_tokens[i],
- strlen(user_tokens[i]));
- memcpy((mb->data + add_ptr + strlen(user_tokens[i]) + 1),
- pass_tokens[i], strlen(pass_tokens[i]));
- add_ptr = add_ptr + strlen(user_tokens[i]) + 1 +
- strlen(pass_tokens[i]) + 1;
- }
-
- mb->cmd.length = add_ptr + 1;
- mb->cmd.command = PPP_SET_INBOUND_AUTH;
-
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
- return err;
-}
-
-
-/*============================================================================
- * Tokenize string.
- * Parse a string of the following syntax:
- * <arg1>,<arg2>,...
- * and fill array of tokens with pointers to string elements.
- *
- */
-static int tokenize (char *str, char **tokens)
-{
- int cnt = 0;
-
- tokens[0] = strsep(&str, "/");
- while (tokens[cnt] && (cnt < 32 - 1))
- {
- tokens[cnt] = strstrip(tokens[cnt], " \t");
- tokens[++cnt] = strsep(&str, "/");
- }
- return cnt;
-}
-
-/*============================================================================
- * Strip leading and trailing spaces off the string str.
- */
-static char* strstrip (char *str, char* s)
-{
- char *eos = str + strlen(str); /* -> end of string */
-
- while (*str && strchr(s, *str))
- ++str /* strip leading spaces */
- ;
- while ((eos > str) && strchr(s, *(eos - 1)))
- --eos /* strip trailing spaces */
- ;
- *eos = '\0';
- return str;
-}
-/*============================================================================
- * Configure PPP firmware.
- */
-static int ppp_configure(sdla_t *card, void *data)
-{
- ppp_mbox_t *mb = card->mbox;
- int data_len = sizeof(ppp508_conf_t);
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- memcpy(mb->data, data, data_len);
- mb->cmd.length = data_len;
- mb->cmd.command = PPP_SET_CONFIG;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
- return err;
-}
-
-/*============================================================================
- * Set interrupt mode.
- */
-static int ppp_set_intr_mode(sdla_t *card, unsigned char mode)
-{
- ppp_mbox_t *mb = card->mbox;
- ppp_intr_info_t *ppp_intr_data = (ppp_intr_info_t *) &mb->data[0];
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- ppp_intr_data->i_enable = mode;
-
- ppp_intr_data->irq = card->hw.irq;
- mb->cmd.length = 2;
-
- /* If timer has been enabled, set the timer delay to 1sec */
- if (mode & 0x80){
- ppp_intr_data->timer_len = 250; //5;//100; //250;
- mb->cmd.length = 4;
- }
-
- mb->cmd.command = PPP_SET_INTR_FLAGS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
-
- return err;
-}
-
-/*============================================================================
- * Enable communications.
- */
-static int ppp_comm_enable(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_ENABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- else
- card->u.p.comm_enabled = 1;
-
- return err;
-}
-
-/*============================================================================
- * Disable communications.
- */
-static int ppp_comm_disable(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_DISABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- else
- card->u.p.comm_enabled = 0;
-
- return err;
-}
-
-static int ppp_comm_disable_shutdown(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- ppp_intr_info_t *ppp_intr_data;
- int err;
-
- if (!mb){
- return 1;
- }
-
- ppp_intr_data = (ppp_intr_info_t *) &mb->data[0];
-
- /* Disable all interrupts */
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- ppp_intr_data->i_enable = 0;
-
- ppp_intr_data->irq = card->hw.irq;
- mb->cmd.length = 2;
-
- mb->cmd.command = PPP_SET_INTR_FLAGS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- /* Disable communicatinons */
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_DISABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- card->u.p.comm_enabled = 0;
-
- return 0;
-}
-
-
-
-/*============================================================================
- * Get communications error statistics.
- */
-static int ppp_get_err_stats(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_READ_ERROR_STATS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err == CMD_OK) {
-
- ppp_err_stats_t* stats = (void*)mb->data;
- card->wandev.stats.rx_over_errors = stats->rx_overrun;
- card->wandev.stats.rx_crc_errors = stats->rx_bad_crc;
- card->wandev.stats.rx_missed_errors = stats->rx_abort;
- card->wandev.stats.rx_length_errors = stats->rx_lost;
- card->wandev.stats.tx_aborted_errors = stats->tx_abort;
-
- } else
- ppp_error(card, err, mb);
-
- return err;
-}
-
-/*============================================================================
- * Send packet.
- * Return: 0 - o.k.
- * 1 - no transmit buffers available
- */
-static int ppp_send (sdla_t *card, void *data, unsigned len, unsigned proto)
-{
- ppp_buf_ctl_t *txbuf = card->u.p.txbuf;
-
- if (txbuf->flag)
- return 1;
-
- sdla_poke(&card->hw, txbuf->buf.ptr, data, len);
-
- txbuf->length = len; /* frame length */
-
- if (proto == htons(ETH_P_IPX))
- txbuf->proto = 0x01; /* protocol ID */
- else
- txbuf->proto = 0x00; /* protocol ID */
-
- txbuf->flag = 1; /* start transmission */
-
- /* Update transmit buffer control fields */
- card->u.p.txbuf = ++txbuf;
-
- if ((void*)txbuf > card->u.p.txbuf_last)
- card->u.p.txbuf = card->u.p.txbuf_base;
-
- return 0;
-}
-
-/****** Firmware Error Handler **********************************************/
-
-/*============================================================================
- * Firmware error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int ppp_error(sdla_t *card, int err, ppp_mbox_t *mb)
-{
- unsigned cmd = mb->cmd.command;
-
- switch (err) {
-
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, cmd);
- break;
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n"
- , card->devname, cmd, err);
- }
-
- return 0;
-}
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * PPP interrupt service routine.
- */
-static void wpp_isr (sdla_t *card)
-{
- ppp_flags_t *flags = card->flags;
- char *ptr = &flags->iflag;
- struct net_device *dev = card->wandev.dev;
- int i;
-
- card->in_isr = 1;
- ++card->statistics.isr_entry;
-
- if (!dev && flags->iflag != PPP_INTR_CMD){
- card->in_isr = 0;
- flags->iflag = 0;
- return;
- }
-
- if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
- card->in_isr = 0;
- flags->iflag = 0;
- return;
- }
-
-
- if(card->hw.type != SDLA_S514){
- if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
- ++card->statistics.isr_already_critical;
- printk (KERN_INFO "%s: Critical while in ISR!\n",
- card->devname);
- card->in_isr = 0;
- flags->iflag = 0;
- return;
- }
- }
-
- switch (flags->iflag) {
-
- case PPP_INTR_RXRDY: /* receive interrupt 0x01 (bit 0)*/
- ++card->statistics.isr_rx;
- rx_intr(card);
- break;
-
- case PPP_INTR_TXRDY: /* transmit interrupt 0x02 (bit 1)*/
- ++card->statistics.isr_tx;
- flags->imask &= ~PPP_INTR_TXRDY;
- netif_wake_queue(dev);
- break;
-
- case PPP_INTR_CMD: /* interface command completed */
- ++Intr_test_counter;
- ++card->statistics.isr_intr_test;
- break;
-
- case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/
- case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/
- case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/
- case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */
- event_intr(card);
- break;
-
- case PPP_INTR_TIMER:
- timer_intr(card);
- break;
-
- default: /* unexpected interrupt */
- ++card->statistics.isr_spurious;
- printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
- card->devname, flags->iflag);
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
- }
-
- card->in_isr = 0;
- flags->iflag = 0;
- return;
-}
-
-/*============================================================================
- * Receive interrupt handler.
- */
-static void rx_intr(sdla_t *card)
-{
- ppp_buf_ctl_t *rxbuf = card->rxmb;
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area;
- struct sk_buff *skb;
- unsigned len;
- void *buf;
- int i;
- ppp_flags_t *flags = card->flags;
- char *ptr = &flags->iflag;
- int udp_type;
-
-
- if (rxbuf->flag != 0x01) {
-
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned)rxbuf, rxbuf->flag);
-
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
-
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
-
- ++card->statistics.rx_intr_corrupt_rx_bfr;
-
-
- /* Bug Fix: Mar 6 2000
- * If we get a corrupted mailbox, it means that driver
- * is out of sync with the firmware. There is no recovery.
- * If we don't turn off all interrupts for this card
- * the machine will crash.
- */
- printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
- printk(KERN_INFO "Please contact Sangoma Technologies !\n");
- ppp_set_intr_mode(card,0);
- return;
- }
-
- if (dev && netif_running(dev) && dev->priv){
-
- len = rxbuf->length;
- ppp_priv_area = dev->priv;
-
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
-
- if (skb != NULL) {
-
- /* Copy data to the socket buffer */
- unsigned addr = rxbuf->buf.ptr;
-
- if ((addr + len) > card->u.p.rx_top + 1) {
-
- unsigned tmp = card->u.p.rx_top - addr + 1;
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, addr, buf, tmp);
- addr = card->u.p.rx_base;
- len -= tmp;
- }
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, addr, buf, len);
-
- /* Decapsulate packet */
- switch (rxbuf->proto) {
-
- case 0x00:
- skb->protocol = htons(ETH_P_IP);
- break;
-
- case 0x01:
- skb->protocol = htons(ETH_P_IPX);
- break;
- }
-
- udp_type = udp_pkt_type( skb, card );
-
- if (udp_type == UDP_PTPIPE_TYPE){
-
- /* Handle a UDP Request in Timer Interrupt */
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK, card, skb, dev,
- ppp_priv_area)){
- flags->imask |= PPP_INTR_TIMER;
- }
- ++ppp_priv_area->rx_intr_stat.rx_intr_PIPE_request;
-
-
- } else if (handle_IPXWAN(skb->data,card->devname,
- ppp_priv_area->enable_IPX,
- ppp_priv_area->network_number,
- skb->protocol)) {
-
- /* Handle an IPXWAN packet */
- if( ppp_priv_area->enable_IPX) {
-
- /* Make sure we are not already sending */
- if (!test_bit(SEND_CRIT, &card->wandev.critical)){
- ppp_send(card, skb->data, skb->len, htons(ETH_P_IPX));
- }
- dev_kfree_skb_any(skb);
-
- } else {
- ++card->wandev.stats.rx_dropped;
- }
- } else {
- /* Pass data up the protocol stack */
- skb->dev = dev;
- skb->mac.raw = skb->data;
-
- ++card->wandev.stats.rx_packets;
- card->wandev.stats.rx_bytes += skb->len;
- ++ppp_priv_area->rx_intr_stat.rx_intr_bfr_passed_to_stack;
- netif_rx(skb);
- dev->last_rx = jiffies;
- }
-
- } else {
-
- if (net_ratelimit()){
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- }
- ++card->wandev.stats.rx_dropped;
- ++ppp_priv_area->rx_intr_stat.rx_intr_no_socket;
- }
-
- } else {
- ++card->statistics.rx_intr_dev_not_started;
- }
-
- /* Release buffer element and calculate a pointer to the next one */
- rxbuf->flag = 0x00;
- card->rxmb = ++rxbuf;
- if ((void*)rxbuf > card->u.p.rxbuf_last)
- card->rxmb = card->u.p.rxbuf_base;
-}
-
-
-void event_intr (sdla_t *card)
-{
-
- struct net_device* dev = card->wandev.dev;
- ppp_private_area_t* ppp_priv_area = dev->priv;
- volatile ppp_flags_t *flags = card->flags;
-
- switch (flags->iflag){
-
- case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/
-
- if (net_ratelimit()){
- printk (KERN_INFO "%s: Modem status: DCD=%s CTS=%s\n",
- card->devname, DCD(flags->mstatus), CTS(flags->mstatus));
- }
- break;
-
- case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/
-
- NEX_PRINTK (KERN_INFO "Data link disconnected intr Cause %X\n",
- flags->disc_cause);
-
- if (flags->disc_cause &
- (PPP_LOCAL_TERMINATION | PPP_DCD_CTS_DROP |
- PPP_REMOTE_TERMINATION)) {
-
- if (card->u.p.ip_mode == WANOPT_PPP_PEER) {
- set_bit(0,&Read_connection_info);
- }
- wanpipe_set_state(card, WAN_DISCONNECTED);
-
- show_disc_cause(card, flags->disc_cause);
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
- trigger_ppp_poll(dev);
- }
- break;
-
- case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/
-
- NEX_PRINTK (KERN_INFO "%s: PPP Link Open, LCP=%s IP=%s\n",
- card->devname,LCP(flags->lcp_state),
- IP(flags->ip_state));
-
- if (flags->lcp_state == 0x09 &&
- (flags->ip_state == 0x09 || flags->ipx_state == 0x09)){
-
- /* Initialize the polling timer and set the state
- * to WAN_CONNNECTED */
-
-
- /* BUG FIX: When the protocol restarts, during heavy
- * traffic, board tx buffers and driver tx buffers
- * can go out of sync. This checks the condition
- * and if the tx buffers are out of sync, the
- * protocols are restarted.
- * I don't know why the board tx buffer is out
- * of sync. It could be that a packets is tx
- * while the link is down, but that is not
- * possible. The other possiblility is that the
- * firmware doesn't reinitialize properly.
- * FIXME: A better fix should be found.
- */
- if (detect_and_fix_tx_bug(card)){
-
- ppp_comm_disable(card);
-
- wanpipe_set_state(card, WAN_DISCONNECTED);
-
- ppp_priv_area->timer_int_enabled |=
- TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
- break;
- }
-
- card->state_tick = jiffies;
- wanpipe_set_state(card, WAN_CONNECTED);
-
- NEX_PRINTK(KERN_INFO "CON: L Tx: %lx B Tx: %lx || L Rx %lx B Rx %lx\n",
- (unsigned long)card->u.p.txbuf, *card->u.p.txbuf_next,
- (unsigned long)card->rxmb, *card->u.p.rxbuf_next);
-
- /* Tell timer interrupt that PPP event occurred */
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
-
- /* If we are in PEER mode, we must first obtain the
- * IP information and then go into the poll routine */
- if (card->u.p.ip_mode != WANOPT_PPP_PEER){
- trigger_ppp_poll(dev);
- }
- }
- break;
-
- case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */
-
- NEX_PRINTK(KERN_INFO "DTR Drop Timeout Interrrupt \n");
-
- if (card->u.p.ip_mode == WANOPT_PPP_PEER) {
- set_bit(0,&Read_connection_info);
- }
-
- wanpipe_set_state(card, WAN_DISCONNECTED);
-
- show_disc_cause(card, flags->disc_cause);
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
- trigger_ppp_poll(dev);
- break;
-
- default:
- printk(KERN_INFO "%s: Error, Invalid PPP Event\n",card->devname);
- }
-}
-
-
-
-/* TIMER INTERRUPT */
-
-void timer_intr (sdla_t *card)
-{
-
- struct net_device* dev = card->wandev.dev;
- ppp_private_area_t* ppp_priv_area = dev->priv;
- ppp_flags_t *flags = card->flags;
-
-
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG){
- if (!config_ppp(card)){
- ppp_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_CONFIG;
- }
- }
-
- /* Update statistics */
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE){
- ppp_get_err_stats(card);
- if(!(--ppp_priv_area->update_comms_stats)){
- ppp_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- }
- }
-
- /* PPIPEMON UDP request */
-
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP){
- process_udp_mgmt_pkt(card,dev, ppp_priv_area);
- ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
- }
-
- /* PPP Event */
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_PPP_EVENT){
-
- if (card->wandev.state == WAN_DISCONNECTED){
- retrigger_comm(card);
- }
-
- /* If the state is CONNECTING, it means that communicatins were
- * enabled. When the remote side enables its comminication we
- * should get an interrupt PPP_INTR_OPEN, thus turn off polling
- */
-
- else if (card->wandev.state == WAN_CONNECTING){
- /* Turn off the timer interrupt */
- ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT;
- }
-
- /* If state is connected and we are in PEER mode
- * poll for an IP address which will be provided by remote end.
- */
- else if ((card->wandev.state == WAN_CONNECTED &&
- card->u.p.ip_mode == WANOPT_PPP_PEER) &&
- test_bit(0,&Read_connection_info)){
-
- card->state_tick = jiffies;
- if (read_connection_info (card)){
- printk(KERN_INFO "%s: Failed to read PEER IP Addresses\n",
- card->devname);
- }else{
- clear_bit(0,&Read_connection_info);
- set_bit(1,&Read_connection_info);
- trigger_ppp_poll(dev);
- }
- }else{
- //FIXME Put the comment back int
- ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT;
- }
-
- }/* End of PPP_EVENT */
-
-
- /* Only disable the timer interrupt if there are no udp, statistic */
- /* updates or events pending */
- if(!ppp_priv_area->timer_int_enabled) {
- flags->imask &= ~PPP_INTR_TIMER;
- }
-}
-
-
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_IPX, unsigned long network_number, unsigned short proto)
-{
- int i;
-
- if( proto == htons(ETH_P_IPX) ) {
- //It's an IPX packet
- if(!enable_IPX) {
- //Return 1 so we don't pass it up the stack.
- return 1;
- }
- } else {
- //It's not IPX so pass it up the stack.
- return 0;
- }
-
- if( sendpacket[16] == 0x90 &&
- sendpacket[17] == 0x04)
- {
- //It's IPXWAN
-
- if( sendpacket[2] == 0x02 &&
- sendpacket[34] == 0x00)
- {
- //It's a timer request packet
- printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",devname);
-
- //Go through the routing options and answer no to every
- //option except Unnumbered RIP/SAP
- for(i = 41; sendpacket[i] == 0x00; i += 5)
- {
- //0x02 is the option for Unnumbered RIP/SAP
- if( sendpacket[i + 4] != 0x02)
- {
- sendpacket[i + 1] = 0;
- }
- }
-
- //Skip over the extended Node ID option
- if( sendpacket[i] == 0x04 )
- {
- i += 8;
- }
-
- //We also want to turn off all header compression opt.
- for(; sendpacket[i] == 0x80 ;)
- {
- sendpacket[i + 1] = 0;
- i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4;
- }
-
- //Set the packet type to timer response
- sendpacket[34] = 0x01;
-
- printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",devname);
- }
- else if( sendpacket[34] == 0x02 )
- {
- //This is an information request packet
- printk(KERN_INFO "%s: Received IPXWAN Information Request packet\n",devname);
-
- //Set the packet type to information response
- sendpacket[34] = 0x03;
-
- //Set the router name
- sendpacket[51] = 'P';
- sendpacket[52] = 'T';
- sendpacket[53] = 'P';
- sendpacket[54] = 'I';
- sendpacket[55] = 'P';
- sendpacket[56] = 'E';
- sendpacket[57] = '-';
- sendpacket[58] = CVHexToAscii(network_number >> 28);
- sendpacket[59] = CVHexToAscii((network_number & 0x0F000000)>> 24);
- sendpacket[60] = CVHexToAscii((network_number & 0x00F00000)>> 20);
- sendpacket[61] = CVHexToAscii((network_number & 0x000F0000)>> 16);
- sendpacket[62] = CVHexToAscii((network_number & 0x0000F000)>> 12);
- sendpacket[63] = CVHexToAscii((network_number & 0x00000F00)>> 8);
- sendpacket[64] = CVHexToAscii((network_number & 0x000000F0)>> 4);
- sendpacket[65] = CVHexToAscii(network_number & 0x0000000F);
- for(i = 66; i < 99; i+= 1)
- {
- sendpacket[i] = 0;
- }
-
- printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",devname);
- }
- else
- {
- printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname);
- return 0;
- }
-
- //Set the WNodeID to our network address
- sendpacket[35] = (unsigned char)(network_number >> 24);
- sendpacket[36] = (unsigned char)((network_number & 0x00FF0000) >> 16);
- sendpacket[37] = (unsigned char)((network_number & 0x0000FF00) >> 8);
- sendpacket[38] = (unsigned char)(network_number & 0x000000FF);
-
- return 1;
- } else {
- //If we get here it's an IPX-data packet, so it'll get passed up the stack.
-
- //switch the network numbers
- switch_net_numbers(sendpacket, network_number, 1);
- return 0;
- }
-}
-
-/****** Background Polling Routines ****************************************/
-
-/* All polling functions are invoked by the TIMER interrupt in the wpp_isr
- * routine.
- */
-
-/*============================================================================
- * Monitor active link phase.
- */
-static void process_route (sdla_t *card)
-{
- ppp_flags_t *flags = card->flags;
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
-
- if ((card->u.p.ip_mode == WANOPT_PPP_PEER) &&
- (flags->ip_state == 0x09)){
-
- /* We get ip_local from the firmware in PEER mode.
- * Therefore, if ip_local is 0, we failed to obtain
- * the remote IP address. */
- if (ppp_priv_area->ip_local == 0)
- return;
-
- printk(KERN_INFO "%s: IPCP State Opened.\n", card->devname);
- if (read_info( card )) {
- printk(KERN_INFO
- "%s: An error occurred in IP assignment.\n",
- card->devname);
- } else {
- struct in_device *in_dev = dev->ip_ptr;
- if (in_dev != NULL ) {
- struct in_ifaddr *ifa = in_dev->ifa_list;
-
- printk(KERN_INFO "%s: Assigned Lcl. Addr: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(ifa->ifa_local));
- printk(KERN_INFO "%s: Assigned Rmt. Addr: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(ifa->ifa_address));
- }else{
- printk(KERN_INFO
- "%s: Error: Failed to add a route for PPP interface %s\n",
- card->devname,dev->name);
- }
- }
- }
-}
-
-/*============================================================================
- * Monitor physical link disconnected phase.
- * o if interface is up and the hold-down timeout has expired, then retry
- * connection.
- */
-static void retrigger_comm(sdla_t *card)
-{
- struct net_device *dev = card->wandev.dev;
-
- if (dev && ((jiffies - card->state_tick) > HOLD_DOWN_TIME)) {
-
- wanpipe_set_state(card, WAN_CONNECTING);
-
- if(ppp_comm_enable(card) == CMD_OK){
- init_ppp_tx_rx_buff( card );
- }
- }
-}
-
-/****** Miscellaneous Functions *********************************************/
-
-/*============================================================================
- * Configure S508 adapter.
- */
-static int config508(struct net_device *dev, sdla_t *card)
-{
- ppp508_conf_t cfg;
- struct in_device *in_dev = dev->ip_ptr;
- ppp_private_area_t *ppp_priv_area = dev->priv;
-
- /* Prepare PPP configuration structure */
- memset(&cfg, 0, sizeof(ppp508_conf_t));
-
- if (card->wandev.clocking)
- cfg.line_speed = card->wandev.bps;
-
- if (card->wandev.interface == WANOPT_RS232)
- cfg.conf_flags |= INTERFACE_LEVEL_RS232;
-
-
- cfg.conf_flags |= DONT_TERMINATE_LNK_MAX_CONFIG; /*send Configure-Request packets forever*/
- cfg.txbuf_percent = PERCENT_TX_BUFF; /* % of Tx bufs */
- cfg.mtu_local = card->wandev.mtu;
- cfg.mtu_remote = card->wandev.mtu; /* Default */
- cfg.restart_tmr = TIME_BETWEEN_CONF_REQ; /* 30 = 3sec */
- cfg.auth_rsrt_tmr = TIME_BETWEEN_PAP_CHAP_REQ; /* 30 = 3sec */
- cfg.auth_wait_tmr = WAIT_PAP_CHAP_WITHOUT_REPLY; /* 300 = 30s */
- cfg.mdm_fail_tmr = WAIT_AFTER_DCD_CTS_LOW; /* 5 = 0.5s */
- cfg.dtr_drop_tmr = TIME_DCD_CTS_LOW_AFTER_LNK_DOWN; /* 10 = 1s */
- cfg.connect_tmout = WAIT_DCD_HIGH_AFTER_ENABLE_COMM; /* 900 = 90s */
- cfg.conf_retry = MAX_CONF_REQ_WITHOUT_REPLY; /* 10 = 1s */
- cfg.term_retry = MAX_TERM_REQ_WITHOUT_REPLY; /* 2 times */
- cfg.fail_retry = NUM_CONF_NAK_WITHOUT_REPLY; /* 5 times */
- cfg.auth_retry = NUM_AUTH_REQ_WITHOUT_REPLY; /* 10 times */
-
-
- if( !card->u.p.authenticator ) {
- printk(KERN_INFO "%s: Device is not configured as an authenticator\n",
- card->devname);
- cfg.auth_options = NO_AUTHENTICATION;
- }else{
- printk(KERN_INFO "%s: Device is configured as an authenticator\n",
- card->devname);
- cfg.auth_options = INBOUND_AUTH;
- }
-
- if( ppp_priv_area->pap == WANOPT_YES){
- cfg.auth_options |=PAP_AUTH;
- printk(KERN_INFO "%s: Pap enabled\n", card->devname);
- }
- if( ppp_priv_area->chap == WANOPT_YES){
- cfg.auth_options |= CHAP_AUTH;
- printk(KERN_INFO "%s: Chap enabled\n", card->devname);
- }
-
-
- if (ppp_priv_area->enable_IPX == WANOPT_YES){
- printk(KERN_INFO "%s: Enabling IPX Protocol\n",card->devname);
- cfg.ipx_options = ENABLE_IPX | ROUTING_PROT_DEFAULT;
- }else{
- cfg.ipx_options = DISABLE_IPX;
- }
-
- switch (card->u.p.ip_mode) {
-
- case WANOPT_PPP_STATIC:
-
- printk(KERN_INFO "%s: PPP IP Mode: STATIC\n",card->devname);
- cfg.ip_options = L_AND_R_IP_NO_ASSIG |
- ENABLE_IP;
- cfg.ip_local = in_dev->ifa_list->ifa_local;
- cfg.ip_remote = in_dev->ifa_list->ifa_address;
- /* Debugging code used to check that IP addresses
- * obtained from the kernel are correct */
-
- NEX_PRINTK(KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n",
- NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name);
- break;
-
- case WANOPT_PPP_HOST:
-
- printk(KERN_INFO "%s: PPP IP Mode: HOST\n",card->devname);
- cfg.ip_options = L_IP_LOCAL_ASSIG |
- R_IP_LOCAL_ASSIG |
- ENABLE_IP;
- cfg.ip_local = in_dev->ifa_list->ifa_local;
- cfg.ip_remote = in_dev->ifa_list->ifa_address;
- /* Debugging code used to check that IP addresses
- * obtained from the kernel are correct */
- NEX_PRINTK (KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n",
- NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name);
-
- break;
-
- case WANOPT_PPP_PEER:
-
- printk(KERN_INFO "%s: PPP IP Mode: PEER\n",card->devname);
- cfg.ip_options = L_IP_REMOTE_ASSIG |
- R_IP_REMOTE_ASSIG |
- ENABLE_IP;
- cfg.ip_local = 0x00;
- cfg.ip_remote = 0x00;
- break;
-
- default:
- printk(KERN_INFO "%s: ERROR: Unsupported PPP Mode Selected\n",
- card->devname);
- printk(KERN_INFO "%s: PPP IP Modes: STATIC, PEER or HOST\n",
- card->devname);
- return 1;
- }
-
- return ppp_configure(card, &cfg);
-}
-
-/*============================================================================
- * Show disconnection cause.
- */
-static void show_disc_cause(sdla_t *card, unsigned cause)
-{
- if (cause & 0x0802)
-
- printk(KERN_INFO "%s: link terminated by peer\n",
- card->devname);
-
- else if (cause & 0x0004)
-
- printk(KERN_INFO "%s: link terminated by user\n",
- card->devname);
-
- else if (cause & 0x0008)
-
- printk(KERN_INFO "%s: authentication failed\n", card->devname);
-
- else if (cause & 0x0010)
-
- printk(KERN_INFO
- "%s: authentication protocol negotiation failed\n",
- card->devname);
-
- else if (cause & 0x0020)
-
- printk(KERN_INFO
- "%s: peer's request for authentication rejected\n",
- card->devname);
-
- else if (cause & 0x0040)
-
- printk(KERN_INFO "%s: MRU option rejected by peer\n",
- card->devname);
-
- else if (cause & 0x0080)
-
- printk(KERN_INFO "%s: peer's MRU was too small\n",
- card->devname);
-
- else if (cause & 0x0100)
-
- printk(KERN_INFO "%s: failed to negotiate peer's LCP options\n",
- card->devname);
-
- else if (cause & 0x0200)
-
- printk(KERN_INFO "%s: failed to negotiate peer's IPCP options\n"
- , card->devname);
-
- else if (cause & 0x0400)
-
- printk(KERN_INFO
- "%s: failed to negotiate peer's IPXCP options\n",
- card->devname);
-}
-
-/*=============================================================================
- * Process UDP call of type PTPIPEAB.
- */
-static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev,
- ppp_private_area_t *ppp_priv_area )
-{
- unsigned char buf2[5];
- unsigned char *buf;
- unsigned int frames, len;
- struct sk_buff *new_skb;
- unsigned short data_length, buffer_length, real_len;
- unsigned long data_ptr;
- int udp_mgmt_req_valid = 1;
- ppp_mbox_t *mbox = card->mbox;
- struct timeval tv;
- int err;
- ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t*)&ppp_priv_area->udp_pkt_data;
-
- memcpy(&buf2, &card->wandev.udp_port, 2 );
-
-
- if(ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- switch(ppp_udp_pkt->cblock.command) {
-
- case PPIPE_GET_IBA_DATA:
- case PPP_READ_CONFIG:
- case PPP_GET_CONNECTION_INFO:
- case PPIPE_ROUTER_UP_TIME:
- case PPP_READ_STATISTICS:
- case PPP_READ_ERROR_STATS:
- case PPP_READ_PACKET_STATS:
- case PPP_READ_LCP_STATS:
- case PPP_READ_IPCP_STATS:
- case PPP_READ_IPXCP_STATS:
- case PPP_READ_PAP_STATS:
- case PPP_READ_CHAP_STATS:
- case PPP_READ_CODE_VERSION:
- udp_mgmt_req_valid = 1;
- break;
-
- default:
- udp_mgmt_req_valid = 0;
- break;
- }
- }
-
- if(!udp_mgmt_req_valid) {
-
- /* set length to 0 */
- ppp_udp_pkt->cblock.length = 0x00;
-
- /* set return code */
- ppp_udp_pkt->cblock.result = 0xCD;
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_direction_err;
-
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Warning, Illegal UDP command attempted from network: %x\n",
- card->devname,ppp_udp_pkt->cblock.command);
- }
- } else {
- /* Initialize the trace element */
- trace_element_t trace_element;
-
- switch (ppp_udp_pkt->cblock.command){
-
- /* PPIPE_ENABLE_TRACING */
- case PPIPE_ENABLE_TRACING:
- if (!card->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
- mbox->cmd.command = PPP_DATALINE_MONITOR;
- mbox->cmd.length = 0x01;
- mbox->data[0] = ppp_udp_pkt->data[0];
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK) {
-
- ppp_error(card, err, mbox);
- card->TracingEnabled = 0;
-
- /* set the return code */
-
- ppp_udp_pkt->cblock.result = mbox->cmd.result;
- mbox->cmd.length = 0;
- break;
- }
-
- sdla_peek(&card->hw, 0xC000, &buf2, 2);
-
- ppp_priv_area->curr_trace_addr = 0;
- memcpy(&ppp_priv_area->curr_trace_addr, &buf2, 2);
- ppp_priv_area->start_trace_addr =
- ppp_priv_area->curr_trace_addr;
- ppp_priv_area->end_trace_addr =
- ppp_priv_area->start_trace_addr + END_OFFSET;
-
- /* MAX_SEND_BUFFER_SIZE - 28 (IP header)
- - 32 (ppipemon CBLOCK) */
- available_buffer_space = MAX_LGTH_UDP_MGNT_PKT -
- sizeof(ip_pkt_t)-
- sizeof(udp_pkt_t)-
- sizeof(wp_mgmt_t)-
- sizeof(cblock_t);
- }
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 0;
- card->TracingEnabled = 1;
- break;
-
- /* PPIPE_DISABLE_TRACING */
- case PPIPE_DISABLE_TRACING:
-
- if(card->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
- mbox->cmd.command = 0x33;
- mbox->cmd.length = 1;
- mbox->data[0] = 0x00;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
-
- }
-
- /*set return code*/
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 0;
- card->TracingEnabled = 0;
- break;
-
- /* PPIPE_GET_TRACE_INFO */
- case PPIPE_GET_TRACE_INFO:
-
- if(!card->TracingEnabled) {
- /* set return code */
- ppp_udp_pkt->cblock.result = 1;
- mbox->cmd.length = 0;
- }
-
- buffer_length = 0;
-
- /* frames < 62, where 62 is the number of trace
- information elements. There is in total 496
- bytes of space and each trace information
- element is 8 bytes.
- */
- for ( frames=0; frames<62; frames++) {
-
- trace_pkt_t *trace_pkt = (trace_pkt_t *)
- &ppp_udp_pkt->data[buffer_length];
-
- /* Read the whole trace packet */
- sdla_peek(&card->hw, ppp_priv_area->curr_trace_addr,
- &trace_element, sizeof(trace_element_t));
-
- /* no data on board so exit */
- if( trace_element.opp_flag == 0x00 )
- break;
-
- data_ptr = trace_element.trace_data_ptr;
-
- /* See if there is actual data on the trace buffer */
- if (data_ptr){
- data_length = trace_element.trace_length;
- }else{
- data_length = 0;
- ppp_udp_pkt->data[0] |= 0x02;
- }
-
- //FIXME: Do we need this check
- if ((available_buffer_space - buffer_length)
- < (sizeof(trace_element_t)+1)){
-
- /*indicate we have more frames
- * on board and exit
- */
- ppp_udp_pkt->data[0] |= 0x02;
- break;
- }
-
- trace_pkt->status = trace_element.trace_type;
- trace_pkt->time_stamp = trace_element.trace_time_stamp;
- trace_pkt->real_length = trace_element.trace_length;
-
- real_len = trace_element.trace_length;
-
- if(data_ptr == 0){
- trace_pkt->data_avail = 0x00;
- }else{
- /* we can take it next time */
- if ((available_buffer_space - buffer_length)<
- (real_len + sizeof(trace_pkt_t))){
-
- ppp_udp_pkt->data[0] |= 0x02;
- break;
- }
- trace_pkt->data_avail = 0x01;
-
- /* get the data */
- sdla_peek(&card->hw, data_ptr,
- &trace_pkt->data,
- real_len);
- }
- /* zero the opp flag to
- show we got the frame */
- buf2[0] = 0x00;
- sdla_poke(&card->hw, ppp_priv_area->curr_trace_addr,
- &buf2, 1);
-
- /* now move onto the next
- frame */
- ppp_priv_area->curr_trace_addr += 8;
-
- /* check if we passed the last address */
- if ( ppp_priv_area->curr_trace_addr >=
- ppp_priv_area->end_trace_addr){
-
- ppp_priv_area->curr_trace_addr =
- ppp_priv_area->start_trace_addr;
- }
-
- /* update buffer length and make sure its even */
-
- if ( trace_pkt->data_avail == 0x01 ) {
- buffer_length += real_len - 1;
- }
-
- /* for the header */
- buffer_length += 8;
-
- if( buffer_length & 0x0001 )
- buffer_length += 1;
- }
-
- /* ok now set the total number of frames passed
- in the high 5 bits */
- ppp_udp_pkt->data[0] |= (frames << 2);
-
- /* set the data length */
- mbox->cmd.length = buffer_length;
- ppp_udp_pkt->cblock.length = buffer_length;
-
- /* set return code */
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- /* PPIPE_GET_IBA_DATA */
- case PPIPE_GET_IBA_DATA:
-
- mbox->cmd.length = 0x09;
-
- sdla_peek(&card->hw, 0xF003, &ppp_udp_pkt->data,
- mbox->cmd.length);
-
- /* set the length of the data */
- ppp_udp_pkt->cblock.length = 0x09;
-
- /* set return code */
- ppp_udp_pkt->cblock.result = 0x00;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- /* PPIPE_FT1_READ_STATUS */
- case PPIPE_FT1_READ_STATUS:
- sdla_peek(&card->hw, 0xF020, &ppp_udp_pkt->data[0], 2);
- ppp_udp_pkt->cblock.length = mbox->cmd.length = 2;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- case PPIPE_FLUSH_DRIVER_STATS:
- init_ppp_priv_struct( ppp_priv_area );
- init_global_statistics( card );
- mbox->cmd.length = 0;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
-
- case PPIPE_ROUTER_UP_TIME:
-
- do_gettimeofday( &tv );
- ppp_priv_area->router_up_time = tv.tv_sec -
- ppp_priv_area->router_start_time;
- *(unsigned long *)&ppp_udp_pkt->data = ppp_priv_area->router_up_time;
- mbox->cmd.length = 4;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- /* PPIPE_DRIVER_STATISTICS */
- case PPIPE_DRIVER_STAT_IFSEND:
- memcpy(&ppp_udp_pkt->data, &ppp_priv_area->if_send_stat,
- sizeof(if_send_stat_t));
-
-
- ppp_udp_pkt->cblock.result = 0;
- ppp_udp_pkt->cblock.length = sizeof(if_send_stat_t);
- mbox->cmd.length = sizeof(if_send_stat_t);
- break;
-
- case PPIPE_DRIVER_STAT_INTR:
- memcpy(&ppp_udp_pkt->data, &card->statistics,
- sizeof(global_stats_t));
-
- memcpy(&ppp_udp_pkt->data+sizeof(global_stats_t),
- &ppp_priv_area->rx_intr_stat,
- sizeof(rx_intr_stat_t));
-
- ppp_udp_pkt->cblock.result = 0;
- ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+
- sizeof(rx_intr_stat_t);
- mbox->cmd.length = ppp_udp_pkt->cblock.length;
- break;
-
- case PPIPE_DRIVER_STAT_GEN:
- memcpy( &ppp_udp_pkt->data,
- &ppp_priv_area->pipe_mgmt_stat,
- sizeof(pipe_mgmt_stat_t));
-
- memcpy(&ppp_udp_pkt->data+sizeof(pipe_mgmt_stat_t),
- &card->statistics, sizeof(global_stats_t));
-
- ppp_udp_pkt->cblock.result = 0;
- ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+
- sizeof(rx_intr_stat_t);
- mbox->cmd.length = ppp_udp_pkt->cblock.length;
- break;
-
-
- /* FT1 MONITOR STATUS */
- case FT1_MONITOR_STATUS_CTRL:
-
- /* Enable FT1 MONITOR STATUS */
- if( ppp_udp_pkt->data[0] == 1) {
-
- if( rCount++ != 0 ) {
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
-
- /* Disable FT1 MONITOR STATUS */
- if( ppp_udp_pkt->data[0] == 0) {
-
- if( --rCount != 0) {
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- goto udp_dflt_cmd;
-
- /* WARNING: FIXME: This should be fixed.
- * The FT1 Status Ctrl doesn't have a break
- * statment. Thus, no code must be inserted
- * HERE: between default and above case statement */
-
- default:
-udp_dflt_cmd:
-
- /* it's a board command */
- mbox->cmd.command = ppp_udp_pkt->cblock.command;
- mbox->cmd.length = ppp_udp_pkt->cblock.length;
-
- if(mbox->cmd.length) {
- memcpy(&mbox->data,(unsigned char *)ppp_udp_pkt->data,
- mbox->cmd.length);
- }
-
- /* run the command on the board */
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK) {
-
- ppp_error(card, err, mbox);
- ++ppp_priv_area->pipe_mgmt_stat.
- UDP_PIPE_mgmt_adptr_cmnd_timeout;
- break;
- }
-
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_cmnd_OK;
-
- /* copy the result back to our buffer */
- memcpy(&ppp_udp_pkt->cblock,mbox, sizeof(cblock_t));
-
- if(mbox->cmd.length) {
- memcpy(&ppp_udp_pkt->data,&mbox->data,mbox->cmd.length);
- }
-
- } /* end of switch */
- } /* end of else */
-
- /* Fill UDP TTL */
- ppp_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
- len = reply_udp(ppp_priv_area->udp_pkt_data, mbox->cmd.length);
-
- if (ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- /* Make sure we are not already sending */
- if (!test_bit(SEND_CRIT,&card->wandev.critical)){
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_adptr;
- ppp_send(card,ppp_priv_area->udp_pkt_data,len,ppp_priv_area->protocol);
- }
-
- } else {
-
- /* Pass it up the stack
- Allocate socket buffer */
- if ((new_skb = dev_alloc_skb(len)) != NULL) {
-
- /* copy data into new_skb */
-
- buf = skb_put(new_skb, len);
- memcpy(buf,ppp_priv_area->udp_pkt_data, len);
-
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_stack;
-
- /* Decapsulate packet and pass it up the protocol
- stack */
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
- netif_rx(new_skb);
- dev->last_rx = jiffies;
-
- } else {
-
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_no_socket;
- printk(KERN_INFO "no socket buffers available!\n");
- }
- }
-
- ppp_priv_area->udp_pkt_lgth = 0;
-
- return;
-}
-
-/*=============================================================================
- * Initial the ppp_private_area structure.
- */
-static void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area )
-{
-
- memset(&ppp_priv_area->if_send_stat, 0, sizeof(if_send_stat_t));
- memset(&ppp_priv_area->rx_intr_stat, 0, sizeof(rx_intr_stat_t));
- memset(&ppp_priv_area->pipe_mgmt_stat, 0, sizeof(pipe_mgmt_stat_t));
-}
-
-/*============================================================================
- * Initialize Global Statistics
- */
-static void init_global_statistics( sdla_t *card )
-{
- memset(&card->statistics, 0, sizeof(global_stats_t));
-}
-
-/*============================================================================
- * Initialize Receive and Transmit Buffers.
- */
-static void init_ppp_tx_rx_buff( sdla_t *card )
-{
- ppp508_buf_info_t* info;
-
- if (card->hw.type == SDLA_S514) {
-
- info = (void*)(card->hw.dpmbase + PPP514_BUF_OFFS);
-
- card->u.p.txbuf_base = (void*)(card->hw.dpmbase +
- info->txb_ptr);
-
- card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base +
- (info->txb_num - 1);
-
- card->u.p.rxbuf_base = (void*)(card->hw.dpmbase +
- info->rxb_ptr);
-
- card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base +
- (info->rxb_num - 1);
-
- } else {
-
- info = (void*)(card->hw.dpmbase + PPP508_BUF_OFFS);
-
- card->u.p.txbuf_base = (void*)(card->hw.dpmbase +
- (info->txb_ptr - PPP508_MB_VECT));
-
- card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base +
- (info->txb_num - 1);
-
- card->u.p.rxbuf_base = (void*)(card->hw.dpmbase +
- (info->rxb_ptr - PPP508_MB_VECT));
-
- card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base +
- (info->rxb_num - 1);
- }
-
- card->u.p.txbuf_next = (unsigned long*)&info->txb_nxt;
- card->u.p.rxbuf_next = (unsigned long*)&info->rxb1_ptr;
-
- card->u.p.rx_base = info->rxb_base;
- card->u.p.rx_top = info->rxb_end;
-
- card->u.p.txbuf = card->u.p.txbuf_base;
- card->rxmb = card->u.p.rxbuf_base;
-
-}
-
-/*=============================================================================
- * Read Connection Information (ie for Remote IP address assginment).
- * Called when ppp interface connected.
- */
-static int read_info( sdla_t *card )
-{
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
- int err;
-
- struct ifreq if_info;
- struct sockaddr_in *if_data1, *if_data2;
- mm_segment_t fs;
-
- /* Set Local and remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
-
- fs = get_fs();
- set_fs(get_ds()); /* get user space block */
-
- /* Change the local and remote ip address of the interface.
- * This will also add in the destination route.
- */
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = ppp_priv_area->ip_local;
- if_data1->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFADDR, &if_info );
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = ppp_priv_area->ip_remote;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
-
- set_fs(fs); /* restore old block */
-
- if (err) {
- printk (KERN_INFO "%s: Adding of route failed: %i\n",
- card->devname,err);
- printk (KERN_INFO "%s: Local : %u.%u.%u.%u\n",
- card->devname,NIPQUAD(ppp_priv_area->ip_local));
- printk (KERN_INFO "%s: Remote: %u.%u.%u.%u\n",
- card->devname,NIPQUAD(ppp_priv_area->ip_remote));
- }
- return err;
-}
-
-/*=============================================================================
- * Remove Dynamic Route.
- * Called when ppp interface disconnected.
- */
-
-static void remove_route( sdla_t *card )
-{
-
- struct net_device *dev = card->wandev.dev;
- long ip_addr;
- int err;
-
- mm_segment_t fs;
- struct ifreq if_info;
- struct sockaddr_in *if_data1;
- struct in_device *in_dev = dev->ip_ptr;
- struct in_ifaddr *ifa = in_dev->ifa_list;
-
- ip_addr = ifa->ifa_local;
-
- /* Set Local and remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- fs = get_fs();
- set_fs(get_ds()); /* get user space block */
-
- /* Change the local ip address of the interface to 0.
- * This will also delete the destination route.
- */
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = 0;
- if_data1->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFADDR, &if_info );
-
- set_fs(fs); /* restore old block */
-
-
- if (err) {
- printk (KERN_INFO "%s: Deleting dynamic route failed %d!\n",
- card->devname, err);
- return;
- }else{
- printk (KERN_INFO "%s: PPP Deleting dynamic route %u.%u.%u.%u successfuly\n",
- card->devname, NIPQUAD(ip_addr));
- }
- return;
-}
-
-/*=============================================================================
- * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR
- * _TEST_COUNTER times.
- */
-static int intr_test( sdla_t *card )
-{
- ppp_mbox_t *mb = card->mbox;
- int err,i;
-
- err = ppp_set_intr_mode( card, 0x08 );
-
- if (err == CMD_OK) {
-
- for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {
- /* Run command READ_CODE_VERSION */
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.length = 0;
- mb->cmd.command = PPP_READ_CODE_VERSION;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- }
- }
- else return err;
-
- err = ppp_set_intr_mode( card, 0 );
- if (err != CMD_OK)
- return err;
-
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. DRVSTATS or PTPIPEAB ?
- */
-static int udp_pkt_type( struct sk_buff *skb, sdla_t *card )
-{
- unsigned char *sendpacket;
- unsigned char buf2[5];
- ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t *)skb->data;
-
- sendpacket = skb->data;
- memcpy(&buf2, &card->wandev.udp_port, 2);
-
- if( ppp_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45 && /* IP packet */
- sendpacket[9] == 0x11 && /* UDP packet */
- sendpacket[22] == buf2[1] && /* UDP Port */
- sendpacket[23] == buf2[0] &&
- sendpacket[36] == 0x01 ) {
-
- if ( sendpacket[28] == 0x50 && /* PTPIPEAB: Signature */
- sendpacket[29] == 0x54 &&
- sendpacket[30] == 0x50 &&
- sendpacket[31] == 0x49 &&
- sendpacket[32] == 0x50 &&
- sendpacket[33] == 0x45 &&
- sendpacket[34] == 0x41 &&
- sendpacket[35] == 0x42 ){
-
- return UDP_PTPIPE_TYPE;
-
- } else if(sendpacket[28] == 0x44 && /* DRVSTATS: Signature */
- sendpacket[29] == 0x52 &&
- sendpacket[30] == 0x56 &&
- sendpacket[31] == 0x53 &&
- sendpacket[32] == 0x54 &&
- sendpacket[33] == 0x41 &&
- sendpacket[34] == 0x54 &&
- sendpacket[35] == 0x53 ){
-
- return UDP_DRVSTATS_TYPE;
-
- } else
- return UDP_INVALID_TYPE;
-
- } else
- return UDP_INVALID_TYPE;
-
-}
-
-/*============================================================================
- * Check to see if the packet to be transmitted contains a broadcast or
- * multicast source IP address.
- */
-
-static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
- struct sk_buff *skb)
-{
- u32 src_ip_addr;
- u32 broadcast_ip_addr = 0;
- struct in_device *in_dev;
-
- /* read the IP source address from the outgoing packet */
- src_ip_addr = *(u32 *)(skb->data + 12);
-
- /* read the IP broadcast address for the device */
- in_dev = dev->ip_ptr;
- if(in_dev != NULL) {
- struct in_ifaddr *ifa= in_dev->ifa_list;
- if(ifa != NULL)
- broadcast_ip_addr = ifa->ifa_broadcast;
- else
- return 0;
- }
-
- /* check if the IP Source Address is a Broadcast address */
- if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) {
- printk(KERN_INFO "%s: Broadcast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- /* check if the IP Source Address is a Multicast address */
- if((ntohl(src_ip_addr) >= 0xE0000001) &&
- (ntohl(src_ip_addr) <= 0xFFFFFFFE)) {
- printk(KERN_INFO "%s: Multicast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- return 0;
-}
-
-void s508_lock (sdla_t *card, unsigned long *smp_flags)
-{
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
-}
-
-void s508_unlock (sdla_t *card, unsigned long *smp_flags)
-{
- spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
-}
-
-static int read_connection_info (sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
- ppp508_connect_info_t *ppp508_connect_info;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.length = 0;
- mb->cmd.command = PPP_GET_CONNECTION_INFO;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK) {
- ppp_error(card, err, mb);
- ppp_priv_area->ip_remote = 0;
- ppp_priv_area->ip_local = 0;
- }
- else {
- ppp508_connect_info = (ppp508_connect_info_t *)mb->data;
- ppp_priv_area->ip_remote = ppp508_connect_info->ip_remote;
- ppp_priv_area->ip_local = ppp508_connect_info->ip_local;
-
- NEX_PRINTK(KERN_INFO "READ CONNECTION GOT IP ADDRESS %x, %x\n",
- ppp_priv_area->ip_remote,
- ppp_priv_area->ip_local);
- }
-
- return err;
-}
-
-/*===============================================================================
- * config_ppp
- *
- * Configure the ppp protocol and enable communications.
- *
- * The if_open function binds this function to the poll routine.
- * Therefore, this function will run every time the ppp interface
- * is brought up.
- *
- * If the communications are not enabled, proceed to configure
- * the card and enable communications.
- *
- * If the communications are enabled, it means that the interface
- * was shutdown by ether the user or driver. In this case, we
- * have to check that the IP addresses have not changed. If
- * the IP addresses changed, we have to reconfigure the firmware
- * and update the changed IP addresses. Otherwise, just exit.
- */
-static int config_ppp (sdla_t *card)
-{
-
- struct net_device *dev = card->wandev.dev;
- ppp_flags_t *flags = card->flags;
- ppp_private_area_t *ppp_priv_area = dev->priv;
-
- if (card->u.p.comm_enabled){
-
- if (ppp_priv_area->ip_local_tmp != ppp_priv_area->ip_local ||
- ppp_priv_area->ip_remote_tmp != ppp_priv_area->ip_remote){
-
- /* The IP addersses have changed, we must
- * stop the communications and reconfigure
- * the card. Reason: the firmware must know
- * the local and remote IP addresses. */
- disable_comm(card);
- wanpipe_set_state(card, WAN_DISCONNECTED);
- printk(KERN_INFO
- "%s: IP addresses changed!\n",
- card->devname);
- printk(KERN_INFO "%s: Restarting communications ...\n",
- card->devname);
- }else{
- /* IP addresses are the same and the link is up,
- * we don't have to do anything here. Therefore, exit */
- return 0;
- }
- }
-
- /* Record the new IP addreses */
- ppp_priv_area->ip_local = ppp_priv_area->ip_local_tmp;
- ppp_priv_area->ip_remote = ppp_priv_area->ip_remote_tmp;
-
- if (config508(dev, card)){
- printk(KERN_INFO "%s: Failed to configure PPP device\n",
- card->devname);
- return 0;
- }
-
- if (ppp_set_intr_mode(card, PPP_INTR_RXRDY|
- PPP_INTR_TXRDY|
- PPP_INTR_MODEM|
- PPP_INTR_DISC |
- PPP_INTR_OPEN |
- PPP_INTR_DROP_DTR |
- PPP_INTR_TIMER)) {
-
- printk(KERN_INFO "%s: Failed to configure board interrupts !\n",
- card->devname);
- return 0;
- }
-
- /* Turn off the transmit and timer interrupt */
- flags->imask &= ~(PPP_INTR_TXRDY | PPP_INTR_TIMER) ;
-
-
- /* If you are not the authenticator and any one of the protocol is
- * enabled then we call the set_out_bound_authentication.
- */
- if ( !card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)) {
- if ( ppp_set_outbnd_auth(card, ppp_priv_area) ){
- printk(KERN_INFO "%s: Outbound authentication failed !\n",
- card->devname);
- return 0;
- }
- }
-
- /* If you are the authenticator and any one of the protocol is enabled
- * then we call the set_in_bound_authentication.
- */
- if (card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)){
- if (ppp_set_inbnd_auth(card, ppp_priv_area)){
- printk(KERN_INFO "%s: Inbound authentication failed !\n",
- card->devname);
- return 0;
- }
- }
-
- /* If we fail to enable communications here it's OK,
- * since the DTR timer will cause a disconnected, which
- * will retrigger communication in timer_intr() */
- if (ppp_comm_enable(card) == CMD_OK) {
- wanpipe_set_state(card, WAN_CONNECTING);
- init_ppp_tx_rx_buff(card);
- }
-
- return 0;
-}
-
-/*============================================================
- * ppp_poll
- *
- * Rationale:
- * We cannot manipulate the routing tables, or
- * ip addresses withing the interrupt. Therefore
- * we must perform such actons outside an interrupt
- * at a later time.
- *
- * Description:
- * PPP polling routine, responsible for
- * shutting down interfaces upon disconnect
- * and adding/removing routes.
- *
- * Usage:
- * This function is executed for each ppp
- * interface through a tq_schedule bottom half.
- *
- * trigger_ppp_poll() function is used to kick
- * the ppp_poll routine.
- */
-static void ppp_poll(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area;
- sdla_t *card;
- u8 check_gateway=0;
- ppp_flags_t *flags;
-
- if (!dev || (ppp_priv_area = dev->priv) == NULL)
- return;
-
- card = ppp_priv_area->card;
- flags = card->flags;
-
- /* Shutdown is in progress, stop what you are
- * doing and get out */
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
- }
-
- /* if_open() function has triggered the polling routine
- * to determine the configured IP addresses. Once the
- * addresses are found, trigger the chdlc configuration */
- if (test_bit(0,&ppp_priv_area->config_ppp)){
-
- ppp_priv_area->ip_local_tmp = get_ip_address(dev,WAN_LOCAL_IP);
- ppp_priv_area->ip_remote_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
-
- if (ppp_priv_area->ip_local_tmp == ppp_priv_area->ip_remote_tmp &&
- card->u.p.ip_mode == WANOPT_PPP_HOST){
-
- if (++ppp_priv_area->ip_error > MAX_IP_ERRORS){
- printk(KERN_INFO "\n%s: --- WARNING ---\n",
- card->devname);
- printk(KERN_INFO "%s: The local IP address is the same as the\n",
- card->devname);
- printk(KERN_INFO "%s: Point-to-Point IP address.\n",
- card->devname);
- printk(KERN_INFO "%s: --- WARNING ---\n\n",
- card->devname);
- }else{
- clear_bit(POLL_CRIT,&card->wandev.critical);
- ppp_priv_area->poll_delay_timer.expires = jiffies+HZ;
- add_timer(&ppp_priv_area->poll_delay_timer);
- return;
- }
- }
-
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
- flags->imask |= PPP_INTR_TIMER;
- ppp_priv_area->ip_error=0;
-
- clear_bit(0,&ppp_priv_area->config_ppp);
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
- }
-
- /* Dynamic interface implementation, as well as dynamic
- * routing. */
-
- switch (card->wandev.state) {
-
- case WAN_DISCONNECTED:
-
- /* If the dynamic interface configuration is on, and interface
- * is up, then bring down the netowrk interface */
-
- if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) &&
- !test_bit(DEV_DOWN,&ppp_priv_area->interface_down) &&
- card->wandev.dev->flags & IFF_UP){
-
- printk(KERN_INFO "%s: Interface %s down.\n",
- card->devname,card->wandev.dev->name);
- change_dev_flags(card->wandev.dev,
- (card->wandev.dev->flags&~IFF_UP));
- set_bit(DEV_DOWN,&ppp_priv_area->interface_down);
- }else{
- /* We need to check if the local IP address is
- * zero. If it is, we shouldn't try to remove it.
- * For some reason the kernel crashes badly if
- * we try to remove the route twice */
-
- if (card->wandev.dev->flags & IFF_UP &&
- get_ip_address(card->wandev.dev,WAN_LOCAL_IP) &&
- card->u.p.ip_mode == WANOPT_PPP_PEER){
-
- remove_route(card);
- }
- }
- break;
-
- case WAN_CONNECTED:
-
- /* In SMP machine this code can execute before the interface
- * comes up. In this case, we must make sure that we do not
- * try to bring up the interface before dev_open() is finished */
-
-
- /* DEV_DOWN will be set only when we bring down the interface
- * for the very first time. This way we know that it was us
- * that brought the interface down */
-
- if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) &&
- test_bit(DEV_DOWN, &ppp_priv_area->interface_down) &&
- !(card->wandev.dev->flags & IFF_UP)){
-
- printk(KERN_INFO "%s: Interface %s up.\n",
- card->devname,card->wandev.dev->name);
-
- change_dev_flags(card->wandev.dev,(card->wandev.dev->flags|IFF_UP));
- clear_bit(DEV_DOWN,&ppp_priv_area->interface_down);
- check_gateway=1;
- }
-
- if ((card->u.p.ip_mode == WANOPT_PPP_PEER) &&
- test_bit(1,&Read_connection_info)) {
-
- process_route(card);
- clear_bit(1,&Read_connection_info);
- check_gateway=1;
- }
-
- if (ppp_priv_area->gateway && check_gateway)
- add_gateway(card,dev);
-
- break;
- }
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
-}
-
-/*============================================================
- * trigger_ppp_poll
- *
- * Description:
- * Add a ppp_poll() task into a tq_scheduler bh handler
- * for a specific interface. This will kick
- * the ppp_poll() routine at a later time.
- *
- * Usage:
- * Interrupts use this to defer a taks to
- * a polling routine.
- *
- */
-
-static void trigger_ppp_poll(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area;
- if ((ppp_priv_area=dev->priv) != NULL){
-
- sdla_t *card = ppp_priv_area->card;
-
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- return;
- }
-
- if (test_and_set_bit(POLL_CRIT,&card->wandev.critical)){
- return;
- }
-
- schedule_work(&ppp_priv_area->poll_work);
- }
- return;
-}
-
-static void ppp_poll_delay (unsigned long dev_ptr)
-{
- struct net_device *dev = (struct net_device *)dev_ptr;
- trigger_ppp_poll(dev);
-}
-
-/*============================================================
- * detect_and_fix_tx_bug
- *
- * Description:
- * On connect, if the board tx buffer ptr is not the same
- * as the driver tx buffer ptr, we found a firmware bug.
- * Report the bug to the above layer. To fix the
- * error restart communications again.
- *
- * Usage:
- *
- */
-
-static int detect_and_fix_tx_bug (sdla_t *card)
-{
- if (((unsigned long)card->u.p.txbuf_base&0xFFF) != ((*card->u.p.txbuf_next)&0xFFF)){
- NEX_PRINTK(KERN_INFO "Major Error, Fix the bug\n");
- return 1;
- }
- return 0;
-}
-
-MODULE_LICENSE("GPL");
-
-/****** End *****************************************************************/