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net: Handle encapsulated offloads before fragmentation or handing to lower dev

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This change allows the VXLAN to enable Tx checksum offloading even on
devices that do not support encapsulated checksum offloads. The
advantage to this is that it allows for the lower device to change due
to routing table changes without impacting features on the VXLAN itself.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck
2012-12-07 14:14:15 +00:00
committed by David S. Miller
parent 6a674e9c75
commit fc70fb640b
2 changed files with 17 additions and 2 deletions
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4
net/ipv4/ip_output.c
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@@ -595,6 +595,10 @@ slow_path_clean:
}
slow_path:
/* for offloaded checksums cleanup checksum before fragmentation */
if ((skb->ip_summed == CHECKSUM_PARTIAL) && skb_checksum_help(skb))
goto fail;
left = skb->len - hlen; /* Space per frame */
ptr = hlen; /* Where to start from */