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authorAlexander Duyck <alexander.h.duyck@intel.com>2012-12-07 14:14:15 +0000
committerDavid S. Miller <davem@davemloft.net>2012-12-09 00:20:28 -0500
commitfc70fb640b159f1d6bf5ad2321cd55e874c8d1b8 (patch)
tree5c3b02210c6fe0a6c290869ce35c73bc010d8cd7 /net/ipv4
parent6a674e9c75b17e7a88ff15b3c2e269eed54f7cfb (diff)
net: Handle encapsulated offloads before fragmentation or handing to lower dev
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>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/ip_output.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 6537a408a4fb..3e98ed2bff55 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -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 */