net: Support RXFCS feature flag.

When set on hardware that supports the feature,
this causes the Ethernet FCS to be appended
to the end of the skb.

Useful for sniffing packets.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 77f5202977ce..d1331865f830 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -54,6 +54,7 @@ enum {
         NETIF_F_RXCSUM_BIT,             /* Receive checksumming offload */
         NETIF_F_NOCACHE_COPY_BIT,       /* Use no-cache copyfromuser */
         NETIF_F_LOOPBACK_BIT,           /* Enable loopback */
+        NETIF_F_RXFCS_BIT,              /* Append FCS to skb pkt data */
 
         /*
          * Add your fresh new feature above and remember to update
@@ -98,6 +99,7 @@ enum {
 #define NETIF_F_TSO             __NETIF_F(TSO)
 #define NETIF_F_UFO             __NETIF_F(UFO)
 #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED)
+#define NETIF_F_RXFCS           __NETIF_F(RXFCS)
 
 /* Features valid for ethtool to change */
 /* = all defined minus driver/device-class-related */