summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
authorHannes Frederic Sowa <hannes@stressinduktion.org>2016-05-19 15:58:33 +0200
committerDavid S. Miller <davem@davemloft.net>2016-05-20 19:56:02 -0400
commite5aed006be918af163eb397e45aa5ea6cefd5e01 (patch)
tree26eeaaa452ebb326fe6aefff37ec7aaefa8aae8f /net
parentcb543e80f43b2db9d3adcc80d522b27829e60d82 (diff)
downloadlinux-sh-e5aed006be918af163eb397e45aa5ea6cefd5e01.tar.gz
udp: prevent skbs lingering in tunnel socket queues
In case we find a socket with encapsulation enabled we should call the encap_recv function even if just a udp header without payload is available. The callbacks are responsible for correctly verifying and dropping the packets. Also, in case the header validation fails for geneve and vxlan we shouldn't put the skb back into the socket queue, no one will pick them up there. Instead we can simply discard them in the respective encap_recv functions. Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/udp.c2
-rw-r--r--net/ipv6/udp.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 2e3ebfe5549e..d56c0559b477 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1565,7 +1565,7 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
/* if we're overly short, let UDP handle it */
encap_rcv = ACCESS_ONCE(up->encap_rcv);
- if (skb->len > sizeof(struct udphdr) && encap_rcv) {
+ if (encap_rcv) {
int ret;
/* Verify checksum before giving to encap */
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 2ba6a77a8815..2da1896af934 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -617,7 +617,7 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
/* if we're overly short, let UDP handle it */
encap_rcv = ACCESS_ONCE(up->encap_rcv);
- if (skb->len > sizeof(struct udphdr) && encap_rcv) {
+ if (encap_rcv) {
int ret;
/* Verify checksum before giving to encap */