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[VLAN]: Propagate selected feature bits to VLAN devices

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Propagate feature bits from the NETDEV_FEAT_CHANGE notifier. For now
only TSO is propagated for devices that announce their ability to
support TSO in combination with VLAN accel by setting the NETIF_F_VLAN_TSO
flag.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2008-05-20 14:54:50 -07:00
committed by David S. Miller
parent 7ff6e6f779
commit 5fb1357054
4 changed files with 41 additions and 2 deletions
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6
include/linux/netdevice.h
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@ -514,10 +514,12 @@ struct net_device
#define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
#define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
#define NETIF_F_LRO 32768 /* large receive offload */
#define NETIF_F_VLAN_TSO 65536 /* Supports TSO for VLANs */
#define NETIF_F_VLAN_CSUM 131072 /* Supports TX checksumming for VLANs */
/* Segmentation offload features */
#define NETIF_F_GSO_SHIFT 16
#define NETIF_F_GSO_MASK 0xffff0000
#define NETIF_F_GSO_SHIFT 20
#define NETIF_F_GSO_MASK 0xfff00000
#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)