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gre: Fix GREv4 TCPv6 segmentation.

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For ipv6 traffic, GRE can generate packet with strange GSO
bits, e.g. ipv4 packet with SKB_GSO_TCPV6 flag set.  Therefore
following patch relaxes check in inet gso handler to allow
such packet for segmentation.
This patch also fixes wrong skb->protocol set that was done in
gre_gso_segment() handler.

Reported-by: Steinar H. Gunderson <sesse@google.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar 2013-05-02 16:14:19 +00:00 • committed by David S. Miller
parent 83401eb499
commit 9b3eb5edf3
2 changed files with 4 additions and 1 deletions
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1
net/ipv4/af_inet.c
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@ -1293,6 +1293,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
SKB_GSO_DODGY |
SKB_GSO_TCP_ECN |
SKB_GSO_GRE |
SKB_GSO_TCPV6 |
SKB_GSO_UDP_TUNNEL |
0)))
goto out;