[PATCH] lro: IP fragment checking

[Jan-Bernd Themann <ossthema@de.ibm.com>]

This patch prevents that ip fragmented TCP packets are considered vaild
for aggregation

Regards,

Jan-Bernd

---



 net/ipv4/inet_lro.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/net/ipv4/inet_lro.c b/net/ipv4/inet_lro.c
index cfd034a..1f9159d 100644
--- a/net/ipv4/inet_lro.c
+++ b/net/ipv4/inet_lro.c
@@ -64,6 +64,9 @@ static int lro_tcp_ip_check(struct iphdr *iph, struct tcphdr *tcph,
 	if (iph->ihl != IPH_LEN_WO_OPTIONS)
 		return -1;
 
+	if (iph->frag_off & IP_MF)
+		return -1;
+
 	if (tcph->cwr || tcph->ece || tcph->urg || !tcph->ack
 	    || tcph->rst || tcph->syn || tcph->fin)
 		return -1;
-- 
1.5.5