aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/fcoe/fcoe.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 15:15:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 15:15:15 -0700
commit03da30986793385af57eeca3296253c887b742e6 (patch)
tree9c46dbe51c9d0856990649dd917ab45474b7be87 /drivers/scsi/fcoe/fcoe.c
parent6ba74014c1ab0e37af7de6f64b4eccbbae3cb9e7 (diff)
parent339f4f4eab80caa6cf0d39fb057ad6ddb84ba91e (diff)
downloadkernel_samsung_tuna-03da30986793385af57eeca3296253c887b742e6.zip
kernel_samsung_tuna-03da30986793385af57eeca3296253c887b742e6.tar.gz
kernel_samsung_tuna-03da30986793385af57eeca3296253c887b742e6.tar.bz2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (276 commits) [SCSI] zfcp: Trigger logging in the FCP channel on qdio error conditions [SCSI] zfcp: Introduce experimental support for DIF/DIX [SCSI] zfcp: Enable data division support for FCP devices [SCSI] zfcp: Prevent access on uninitialized memory. [SCSI] zfcp: Post events through FC transport class [SCSI] zfcp: Cleanup QDIO attachment and improve processing. [SCSI] zfcp: Cleanup function parameters for sbal value. [SCSI] zfcp: Use correct width for timer_interval field [SCSI] zfcp: Remove SCSI device when removing unit [SCSI] zfcp: Use memdup_user and kstrdup [SCSI] zfcp: Fix retry after failed "open port" erp action [SCSI] zfcp: Fail erp after timeout [SCSI] zfcp: Use forced_reopen in terminate_rport_io callback [SCSI] zfcp: Register SCSI devices after successful fc_remote_port_add [SCSI] zfcp: Do not try "forced close" when port is already closed [SCSI] zfcp: Do not unblock rport from REOPEN_PORT_FORCED [SCSI] sd: add support for runtime PM [SCSI] implement runtime Power Management [SCSI] convert to the new PM framework [SCSI] Unify SAM_ and SAM_STAT_ macros ...
Diffstat (limited to 'drivers/scsi/fcoe/fcoe.c')
-rw-r--r--drivers/scsi/fcoe/fcoe.c147
1 files changed, 98 insertions, 49 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 1a429ed..e79605a 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -117,9 +117,14 @@ static void fcoe_recv_frame(struct sk_buff *skb);
static void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *);
-module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR);
+module_param_call(create, fcoe_create, NULL, (void *)FIP_MODE_AUTO, S_IWUSR);
__MODULE_PARM_TYPE(create, "string");
MODULE_PARM_DESC(create, " Creates fcoe instance on a ethernet interface");
+module_param_call(create_vn2vn, fcoe_create, NULL,
+ (void *)FIP_MODE_VN2VN, S_IWUSR);
+__MODULE_PARM_TYPE(create_vn2vn, "string");
+MODULE_PARM_DESC(create_vn2vn, " Creates a VN_node to VN_node FCoE instance "
+ "on an Ethernet interface");
module_param_call(destroy, fcoe_destroy, NULL, NULL, S_IWUSR);
__MODULE_PARM_TYPE(destroy, "string");
MODULE_PARM_DESC(destroy, " Destroys fcoe instance on a ethernet interface");
@@ -315,7 +320,11 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
dev_uc_add(netdev, flogi_maddr);
if (fip->spma)
dev_uc_add(netdev, fip->ctl_src_addr);
- dev_mc_add(netdev, FIP_ALL_ENODE_MACS);
+ if (fip->mode == FIP_MODE_VN2VN) {
+ dev_mc_add(netdev, FIP_ALL_VN2VN_MACS);
+ dev_mc_add(netdev, FIP_ALL_P2P_MACS);
+ } else
+ dev_mc_add(netdev, FIP_ALL_ENODE_MACS);
/*
* setup the receive function from ethernet driver
@@ -337,10 +346,12 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
/**
* fcoe_interface_create() - Create a FCoE interface on a net device
* @netdev: The net device to create the FCoE interface on
+ * @fip_mode: The mode to use for FIP
*
* Returns: pointer to a struct fcoe_interface or NULL on error
*/
-static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev)
+static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev,
+ enum fip_state fip_mode)
{
struct fcoe_interface *fcoe;
int err;
@@ -357,7 +368,7 @@ static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev)
/*
* Initialize FIP.
*/
- fcoe_ctlr_init(&fcoe->ctlr);
+ fcoe_ctlr_init(&fcoe->ctlr, fip_mode);
fcoe->ctlr.send = fcoe_fip_send;
fcoe->ctlr.update_mac = fcoe_update_src_mac;
fcoe->ctlr.get_src_addr = fcoe_get_src_mac;
@@ -401,7 +412,11 @@ void fcoe_interface_cleanup(struct fcoe_interface *fcoe)
dev_uc_del(netdev, flogi_maddr);
if (fip->spma)
dev_uc_del(netdev, fip->ctl_src_addr);
- dev_mc_del(netdev, FIP_ALL_ENODE_MACS);
+ if (fip->mode == FIP_MODE_VN2VN) {
+ dev_mc_del(netdev, FIP_ALL_VN2VN_MACS);
+ dev_mc_del(netdev, FIP_ALL_P2P_MACS);
+ } else
+ dev_mc_del(netdev, FIP_ALL_ENODE_MACS);
/* Tell the LLD we are done w/ FCoE */
ops = netdev->netdev_ops;
@@ -574,6 +589,50 @@ static int fcoe_get_wwn(struct net_device *netdev, u64 *wwn, int type)
}
/**
+ * fcoe_netdev_features_change - Updates the lport's offload flags based
+ * on the LLD netdev's FCoE feature flags
+ */
+static void fcoe_netdev_features_change(struct fc_lport *lport,
+ struct net_device *netdev)
+{
+ mutex_lock(&lport->lp_mutex);
+
+ if (netdev->features & NETIF_F_SG)
+ lport->sg_supp = 1;
+ else
+ lport->sg_supp = 0;
+
+ if (netdev->features & NETIF_F_FCOE_CRC) {
+ lport->crc_offload = 1;
+ FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n");
+ } else {
+ lport->crc_offload = 0;
+ }
+
+ if (netdev->features & NETIF_F_FSO) {
+ lport->seq_offload = 1;
+ lport->lso_max = netdev->gso_max_size;
+ FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n",
+ lport->lso_max);
+ } else {
+ lport->seq_offload = 0;
+ lport->lso_max = 0;
+ }
+
+ if (netdev->fcoe_ddp_xid) {
+ lport->lro_enabled = 1;
+ lport->lro_xid = netdev->fcoe_ddp_xid;
+ FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n",
+ lport->lro_xid);
+ } else {
+ lport->lro_enabled = 0;
+ lport->lro_xid = 0;
+ }
+
+ mutex_unlock(&lport->lp_mutex);
+}
+
+/**
* fcoe_netdev_config() - Set up net devive for SW FCoE
* @lport: The local port that is associated with the net device
* @netdev: The associated net device
@@ -588,7 +647,6 @@ static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev)
u64 wwnn, wwpn;
struct fcoe_interface *fcoe;
struct fcoe_port *port;
- int vid = 0;
/* Setup lport private data to point to fcoe softc */
port = lport_priv(lport);
@@ -609,25 +667,8 @@ static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev)
return -EINVAL;
/* offload features support */
- if (netdev->features & NETIF_F_SG)
- lport->sg_supp = 1;
+ fcoe_netdev_features_change(lport, netdev);
- if (netdev->features & NETIF_F_FCOE_CRC) {
- lport->crc_offload = 1;
- FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n");
- }
- if (netdev->features & NETIF_F_FSO) {
- lport->seq_offload = 1;
- lport->lso_max = netdev->gso_max_size;
- FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n",
- lport->lso_max);
- }
- if (netdev->fcoe_ddp_xid) {
- lport->lro_enabled = 1;
- lport->lro_xid = netdev->fcoe_ddp_xid;
- FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n",
- lport->lro_xid);
- }
skb_queue_head_init(&port->fcoe_pending_queue);
port->fcoe_pending_queue_active = 0;
setup_timer(&port->timer, fcoe_queue_timer, (unsigned long)lport);
@@ -635,20 +676,12 @@ static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev)
fcoe_link_speed_update(lport);
if (!lport->vport) {
- /*
- * Use NAA 1&2 (FC-FS Rev. 2.0, Sec. 15) to generate WWNN/WWPN:
- * For WWNN, we use NAA 1 w/ bit 27-16 of word 0 as 0.
- * For WWPN, we use NAA 2 w/ bit 27-16 of word 0 from VLAN ID
- */
- if (netdev->priv_flags & IFF_802_1Q_VLAN)
- vid = vlan_dev_vlan_id(netdev);
-
if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN))
wwnn = fcoe_wwn_from_mac(fcoe->ctlr.ctl_src_addr, 1, 0);
fc_set_wwnn(lport, wwnn);
if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN))
wwpn = fcoe_wwn_from_mac(fcoe->ctlr.ctl_src_addr,
- 2, vid);
+ 2, 0);
fc_set_wwpn(lport, wwpn);
}
@@ -967,7 +1000,7 @@ static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe,
}
/* Initialize the library */
- rc = fcoe_libfc_config(lport, &fcoe_libfc_fcn_templ);
+ rc = fcoe_libfc_config(lport, &fcoe->ctlr, &fcoe_libfc_fcn_templ, 1);
if (rc) {
FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the "
"interface\n");
@@ -1210,6 +1243,8 @@ int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
struct fcoe_interface *fcoe;
struct fc_frame_header *fh;
struct fcoe_percpu_s *fps;
+ struct fcoe_port *port;
+ struct ethhdr *eh;
unsigned int cpu;
fcoe = container_of(ptype, struct fcoe_interface, fcoe_packet_type);
@@ -1227,9 +1262,21 @@ int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev,
skb_tail_pointer(skb), skb_end_pointer(skb),
skb->csum, skb->dev ? skb->dev->name : "<NULL>");
- /* check for FCOE packet type */
- if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
- FCOE_NETDEV_DBG(netdev, "Wrong FC type frame");
+ /* check for mac addresses */
+ eh = eth_hdr(skb);
+ port = lport_priv(lport);
+ if (compare_ether_addr(eh->h_dest, port->data_src_addr) &&
+ compare_ether_addr(eh->h_dest, fcoe->ctlr.ctl_src_addr) &&
+ compare_ether_addr(eh->h_dest, (u8[6])FC_FCOE_FLOGI_MAC)) {
+ FCOE_NETDEV_DBG(netdev, "wrong destination mac address:%pM\n",
+ eh->h_dest);
+ goto err;
+ }
+
+ if (is_fip_mode(&fcoe->ctlr) &&
+ compare_ether_addr(eh->h_source, fcoe->ctlr.dest_addr)) {
+ FCOE_NETDEV_DBG(netdev, "wrong source mac address:%pM\n",
+ eh->h_source);
goto err;
}
@@ -1512,11 +1559,9 @@ int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp)
/* fill up mac and fcoe headers */
eh = eth_hdr(skb);
eh->h_proto = htons(ETH_P_FCOE);
+ memcpy(eh->h_dest, fcoe->ctlr.dest_addr, ETH_ALEN);
if (fcoe->ctlr.map_dest)
- fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
- else
- /* insert GW address */
- memcpy(eh->h_dest, fcoe->ctlr.dest_addr, ETH_ALEN);
+ memcpy(eh->h_dest + 3, fh->fh_d_id, 3);
if (unlikely(fcoe->ctlr.flogi_oxid != FC_XID_UNKNOWN))
memcpy(eh->h_source, fcoe->ctlr.ctl_src_addr, ETH_ALEN);
@@ -1834,6 +1879,9 @@ static int fcoe_device_notification(struct notifier_block *notifier,
schedule_work(&port->destroy_work);
goto out;
break;
+ case NETDEV_FEAT_CHANGE:
+ fcoe_netdev_features_change(lport, netdev);
+ break;
default:
FCOE_NETDEV_DBG(netdev, "Unknown event %ld "
"from netdev netlink\n", event);
@@ -1918,8 +1966,8 @@ static int fcoe_disable(const char *buffer, struct kernel_param *kp)
rtnl_unlock();
if (fcoe) {
- fc_fabric_logoff(fcoe->ctlr.lp);
fcoe_ctlr_link_down(&fcoe->ctlr);
+ fcoe_clean_pending_queue(fcoe->ctlr.lp);
} else
rc = -ENODEV;
@@ -1972,12 +2020,10 @@ static int fcoe_enable(const char *buffer, struct kernel_param *kp)
fcoe = fcoe_hostlist_lookup_port(netdev);
rtnl_unlock();
- if (fcoe) {
- if (!fcoe_link_ok(fcoe->ctlr.lp))
- fcoe_ctlr_link_up(&fcoe->ctlr);
- rc = fc_fabric_login(fcoe->ctlr.lp);
- } else
+ if (!fcoe)
rc = -ENODEV;
+ else if (!fcoe_link_ok(fcoe->ctlr.lp))
+ fcoe_ctlr_link_up(&fcoe->ctlr);
dev_put(netdev);
out_nodev:
@@ -2031,8 +2077,8 @@ static int fcoe_destroy(const char *buffer, struct kernel_param *kp)
rc = -ENODEV;
goto out_putdev;
}
- list_del(&fcoe->list);
fcoe_interface_cleanup(fcoe);
+ list_del(&fcoe->list);
/* RTNL mutex is dropped by fcoe_if_destroy */
fcoe_if_destroy(fcoe->ctlr.lp);
@@ -2070,6 +2116,7 @@ static void fcoe_destroy_work(struct work_struct *work)
*/
static int fcoe_create(const char *buffer, struct kernel_param *kp)
{
+ enum fip_state fip_mode = (enum fip_state)(long)kp->arg;
int rc;
struct fcoe_interface *fcoe;
struct fc_lport *lport;
@@ -2111,7 +2158,7 @@ static int fcoe_create(const char *buffer, struct kernel_param *kp)
goto out_putdev;
}
- fcoe = fcoe_interface_create(netdev);
+ fcoe = fcoe_interface_create(netdev, fip_mode);
if (!fcoe) {
rc = -ENOMEM;
goto out_putdev;
@@ -2521,6 +2568,8 @@ static struct fc_seq *fcoe_elsct_send(struct fc_lport *lport, u32 did,
switch (op) {
case ELS_FLOGI:
case ELS_FDISC:
+ if (lport->point_to_multipoint)
+ break;
return fc_elsct_send(lport, did, fp, op, fcoe_flogi_resp,
fip, timeout);
case ELS_LOGO: