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tunneling: Add generic Tunnel segmentation.

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Adds generic tunneling offloading support for IPv4-UDP based
tunnels.
GSO type is added to request this offload for a skb.
netdev feature NETIF_F_UDP_TUNNEL is added for hardware offloaded
udp-tunnel support. Currently no device supports this feature,
software offload is used.

This can be used by tunneling protocols like VXLAN.

CC: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar
2013-03-07 13:21:51 +00:00
committed by David S. Miller
parent aefbd2b3c2
commit 7313626745
8 changed files with 111 additions and 30 deletions
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2
include/linux/skbuff.h
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@@ -316,6 +316,8 @@ enum {
SKB_GSO_FCOE = 1 << 5,
SKB_GSO_GRE = 1 << 6,
SKB_GSO_UDP_TUNNEL = 1 << 7,
};
#if BITS_PER_LONG > 32