Patchwork [net-next,03/12] net: Add NETIF_F_FCOE_MTU to indicate support for a different MTU for FCoE

login
register
mail settings
Submitter Jeff Kirsher
Date Aug. 14, 2009, 10:41 p.m.
Message ID <20090814224156.1640.59034.stgit@localhost.localdomain>
Download mbox | patch
Permalink /patch/31450/
State Accepted
Delegated to: David Miller
Headers show

Comments

Jeff Kirsher - Aug. 14, 2009, 10:41 p.m.
From: Yi Zou <yi.zou@intel.com>

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>
---

 include/linux/netdevice.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
David Miller - Aug. 14, 2009, 11:12 p.m.
From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Fri, 14 Aug 2009 15:41:57 -0700

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

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

Patch

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