From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next PATCH 03/12] net: Add NETIF_F_FCOE_MTU to indicate support for a different MTU for FCoE Date: Fri, 14 Aug 2009 15:41:57 -0700 Message-ID: <20090814224156.1640.59034.stgit@localhost.localdomain> References: <20090814223857.1640.26881.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-scsi@vger.kernel.org, gospo@redhat.com, Yi Zou , Jeff Kirsher To: davem@davemloft.net Return-path: In-Reply-To: <20090814223857.1640.26881.stgit@localhost.localdomain> Sender: linux-scsi-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Yi Zou Add NETIF_F_FCOE_MTU to indicate that the NIC can support a secondary MTU for converged traffic of LAN and Fiber Channel over Ethernet (FCoE). The MTU for FCoE is 2158 = 14 (FCoE header) + 24 (FC header) + 2112 (FC max payload) + 4 (FC CRC) + 4 (FCoE trailer). Signed-off-by: Yi Zou Signed-off-by: Jeff Kirsher --- include/linux/netdevice.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 9f25ab2..9192cdf 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -701,6 +701,7 @@ struct net_device /* the GSO_MASK reserves bits 16 through 23 */ #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ +#define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ /* Segmentation offload features */ #define NETIF_F_GSO_SHIFT 16