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| author | David S. Miller <davem@davemloft.net> | 2016-04-09 17:41:41 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-09 17:41:41 -0400 |
| commit | ae95d7126104591348d37aaf78c8325967e02386 (patch) | |
| tree | 3270712f030549d77d4c55246d056e02b9def29d /net/ipv4/gre_offload.c | |
| parent | 03c5b534185f9844c1b5fcfdbae2adc32821ec42 (diff) | |
| parent | 183c948a3cb3efbf45eabed41fa7ee04c19378fc (diff) | |
| download | linux-ae95d7126104591348d37aaf78c8325967e02386.tar.gz linux-ae95d7126104591348d37aaf78c8325967e02386.tar.bz2 linux-ae95d7126104591348d37aaf78c8325967e02386.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'net/ipv4/gre_offload.c')
| -rw-r--r-- | net/ipv4/gre_offload.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c index c47539d04b88..6a5bd4317866 100644 --- a/net/ipv4/gre_offload.c +++ b/net/ipv4/gre_offload.c @@ -150,6 +150,14 @@ static struct sk_buff **gre_gro_receive(struct sk_buff **head, if ((greh->flags & ~(GRE_KEY|GRE_CSUM)) != 0) goto out; + /* We can only support GRE_CSUM if we can track the location of + * the GRE header. In the case of FOU/GUE we cannot because the + * outer UDP header displaces the GRE header leaving us in a state + * of limbo. + */ + if ((greh->flags & GRE_CSUM) && NAPI_GRO_CB(skb)->is_fou) + goto out; + type = greh->protocol; rcu_read_lock(); |