From ea1e9a9df5e1fde7ad8878c85b4a097cad0ddcea Mon Sep 17 00:00:00 2001 From: Yi Zou Date: Fri, 27 Feb 2009 14:07:04 -0800 Subject: [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 Signed-off-by: James Bottomley --- drivers/scsi/fcoe/fcoe_sw.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/fcoe') 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; -- cgit v1.2.3-18-g5258