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authorTom Herbert <therbert@google.com>2014-05-07 16:52:39 -0700
committerDavid S. Miller <davem@davemloft.net>2014-05-08 23:47:50 -0400
commit0a80966b1043c3e2dc684140f155a3fded308660 (patch)
tree9f8742c79ed1c3bf8f79eee1c46ea4c073fc80a5 /net/ipv4
parent39471ac8dde690bf944248e06bec32a4568cdd45 (diff)
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net: Verify UDP checksum before handoff to encap
Moving validation of UDP checksum to be done in UDP not encap layer. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/udp.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index f2d05d7be743..54ea0a3a48f1 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1495,6 +1495,10 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
if (skb->len > sizeof(struct udphdr) && encap_rcv != NULL) {
int ret;
+ /* Verify checksum before giving to encap */
+ if (udp_lib_checksum_complete(skb))
+ goto csum_error;
+
ret = encap_rcv(sk, skb);
if (ret <= 0) {
UDP_INC_STATS_BH(sock_net(sk),