Commit bb2af4f5 authored Aug 14, 2009 by Yi Zou Committed by David S. Miller Aug 14, 2009

net: Add NETIF_F_FCOE_MTU to indicate support for a different MTU for FCoE



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 <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 36a82236

include/linux/netdevice.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -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