[PATCH 3/7] fcoe: check offload features from LLD through netdev
DORMANTno replies
From: Yi Zou <hidden>
Date: 2009-02-19 19:49:57
Also in:
linux-scsi
Subsystem:
fcoe subsystem (libfc, libfcoe, fcoe), scsi subsystem, the rest · Maintainers:
Hannes Reinecke, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
This checkes if net_devices supports net_fcoe_ops, if it does, then sets up the corresponding flags in the associated fc_lport. Note that large sequence offload is already supported in the current libfc/fcoe, only thing needed is to tell the corresponding fc_lport that LLD is capabale of doing so by using fcoe_ops->features. Signed-off-by: Yi Zou <redacted> --- drivers/scsi/fcoe/fcoe_sw.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/fcoe/fcoe_sw.c b/drivers/scsi/fcoe/fcoe_sw.c
index fe1bcaa..7632d7e 100644
--- a/drivers/scsi/fcoe/fcoe_sw.c
+++ b/drivers/scsi/fcoe/fcoe_sw.c@@ -188,6 +188,33 @@ 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; + lp->crc_offload = 0; + lp->seq_offload = 0; + lp->lro_enabled = 0; + if (netdev->fcoe_ops) { + struct net_fcoe_ops *fops = netdev->fcoe_ops; + + if (fops->features & NET_FCOE_CRC) { + lp->crc_offload = 1; + FCOE_DBG("%s supports FCoE FCCRC offload\n", + netdev->name); + } + + if (fops->features & NET_FCOE_LSO) { + lp->seq_offload = 1; + FCOE_DBG("%s supports FCoE large send offload\n", + netdev->name); + } + + if ((fops->features & NET_FCOE_LRO) && + (fops->lro_xid)) { + lp->lro_enabled = 1; + lp->lro_xid = fops->lro_xid; + FCOE_DBG("%s supports FCoE large receive offload " + "with max read exchange id for ddp %d\n", + netdev->name, lp->lro_xid); + } + } skb_queue_head_init(&fc->fcoe_pending_queue);