netdev - [net-next PATCH 3/3] ixgbe: Add support for using FCoE DDP in 82599 as FCoE targets

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090904005630.14869.67340.stgit@localhost.localdomain>
Date:	Thu, 03 Sep 2009 17:56:31 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, gospo@...hat.com,
	Yi Zou <yi.zou@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next PATCH 3/3] ixgbe: Add support for using FCoE DDP in 82599
	as FCoE targets

From: Yi Zou <yi.zou@...el.com>

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 <yi.zou@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---

 drivers/net/ixgbe/ixgbe_fcoe.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c
index 0607cff..a3c9f99 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;
 

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html