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authorYi Zou <yi.zou@intel.com>2009-02-27 14:07:04 -0800
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-03-13 15:13:48 -0500
commitea1e9a9df5e1fde7ad8878c85b4a097cad0ddcea (patch)
tree5594c002619125f8976c7d3dacdd6791db497d2e /drivers/scsi
parent4d288d5767f853bfca25adc7b6030dc95518cb2e (diff)
[SCSI] fcoe, libfc: check offload features from LLD through netdev
This checks if net_devices supports FCoE offload ops in netdev_ops and it if it does, then sets up the corresponding flags in the associated fc_lport. For large send offload, the maximum length supported in one large send is now described by the added lso_max in fc_lport, which is setup initially from netdev->gso_max_size. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/fcoe/fcoe_sw.c29
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/scsi/fcoe/fcoe_sw.c b/drivers/scsi/fcoe/fcoe_sw.c
index da210eba194..d99217d0510 100644
--- a/drivers/scsi/fcoe/fcoe_sw.c
+++ b/drivers/scsi/fcoe/fcoe_sw.c
@@ -133,6 +133,13 @@ static int fcoe_sw_lport_config(struct fc_lport *lp)
/* lport fc_lport related configuration */
fc_lport_config(lp);
+ /* offload related configuration */
+ lp->crc_offload = 0;
+ lp->seq_offload = 0;
+ lp->lro_enabled = 0;
+ lp->lro_xid = 0;
+ lp->lso_max = 0;
+
return 0;
}
@@ -186,7 +193,27 @@ static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev)
if (fc->real_dev->features & NETIF_F_SG)
lp->sg_supp = 1;
-
+#ifdef NETIF_F_FCOE_CRC
+ if (netdev->features & NETIF_F_FCOE_CRC) {
+ lp->crc_offload = 1;
+ printk(KERN_DEBUG "fcoe:%s supports FCCRC offload\n",
+ netdev->name);
+ }
+#endif
+#ifdef NETIF_F_FSO
+ if (netdev->features & NETIF_F_FSO) {
+ lp->seq_offload = 1;
+ lp->lso_max = netdev->gso_max_size;
+ printk(KERN_DEBUG "fcoe:%s supports LSO for max len 0x%x\n",
+ netdev->name, lp->lso_max);
+ }
+#endif
+ if (netdev->fcoe_ddp_xid) {
+ lp->lro_enabled = 1;
+ lp->lro_xid = netdev->fcoe_ddp_xid;
+ printk(KERN_DEBUG "fcoe:%s supports LRO for max xid 0x%x\n",
+ netdev->name, lp->lro_xid);
+ }
skb_queue_head_init(&fc->fcoe_pending_queue);
fc->fcoe_pending_queue_active = 0;