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authorPravin B Shelar <pshelar@nicira.com>2013-02-14 14:02:41 +0000
committerDavid S. Miller <davem@davemloft.net>2013-02-15 15:17:11 -0500
commit68c331631143f5f039baac99a650e0b9e1ea02b6 (patch)
treec69d73c5599aab5e92a8c99bc5343c9fc9ffbbd8 /net/ipv4/udp.c
parent05e8ef4ab2d8087d360e814d14da20b9f7fb2283 (diff)
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v4 GRE: Add TCP segmentation offload for GRE
Following patch adds GRE protocol offload handler so that skb_gso_segment() can segment GRE packets. SKB GSO CB is added to keep track of total header length so that skb_segment can push entire header. e.g. in case of GRE, skb_segment need to push inner and outer headers to every segment. New NETIF_F_GRE_GSO feature is added for devices which support HW GRE TSO offload. Currently none of devices support it therefore GRE GSO always fall backs to software GSO. [ Compute pkt_len before ip_local_out() invocation. -DaveM ] Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
-rw-r--r--net/ipv4/udp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 6791aac06ea9..39a5e7a9a77f 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2305,7 +2305,8 @@ struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
/* Packet is from an untrusted source, reset gso_segs. */
int type = skb_shinfo(skb)->gso_type;
- if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY) ||
+ if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
+ SKB_GSO_GRE) ||
!(type & (SKB_GSO_UDP))))
goto out;