From d4ab88194e982a0d213000a75475d3e76b2626f0 Mon Sep 17 00:00:00 2001 From: Yi Zou Date: Thu, 3 Sep 2009 14:56:31 +0000 Subject: [PATCH] ixgbe: Add support for using FCoE DDP in 82599 as FCoE targets The FCoE DDP in 82599 can be used for both FCoE initiator as well as FCoE target, depending on the indication of the exchange being the responder or originator in the F_CTL (frame control) field in the encapsulated Fiber Channel frame header (T10 Spec., FC-FS). For the initiator, OX_ID is used for FCoE DDP, where for the target RX_ID is used for FCoE DDP. Signed-off-by: Yi Zou Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ixgbe/ixgbe_fcoe.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c index 0607cffbb213..a3c9f99515e2 100644 --- a/drivers/net/ixgbe/ixgbe_fcoe.c +++ b/drivers/net/ixgbe/ixgbe_fcoe.c @@ -292,6 +292,7 @@ int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter, struct sk_buff *skb) { u16 xid; + u32 fctl; u32 sterr, fceofe, fcerr, fcstat; int rc = -EINVAL; struct ixgbe_fcoe *fcoe; @@ -312,7 +313,12 @@ int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter, skb_set_transport_header(skb, skb_network_offset(skb) + sizeof(struct fcoe_hdr)); fh = (struct fc_frame_header *)skb_transport_header(skb); - xid = be16_to_cpu(fh->fh_ox_id); + fctl = ntoh24(fh->fh_f_ctl); + if (fctl & FC_FC_EX_CTX) + xid = be16_to_cpu(fh->fh_ox_id); + else + xid = be16_to_cpu(fh->fh_rx_id); + if (xid >= IXGBE_FCOE_DDP_MAX) goto ddp_out; -- 2.20.1