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authorpravin shelar <pshelar@ovn.org>2016-10-28 09:59:15 -0700
committerDavid S. Miller <davem@davemloft.net>2016-10-29 20:56:31 -0400
commitc6fcc4fc5f8b592600c7409e769ab68da0fb1eca (patch)
tree4fafb69c92e2169209dfb66452b7d92e8abfb11c /include/net
parent087892d29b75c025086d99b29d385a3dac0169fc (diff)
vxlan: avoid using stale vxlan socket.
When vxlan device is closed vxlan socket is freed. This operation can race with vxlan-xmit function which dereferences vxlan socket. Following patch uses RCU mechanism to avoid this situation. Signed-off-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/vxlan.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/net/vxlan.h b/include/net/vxlan.h
index 0255613a54a4..308adc4154f4 100644
--- a/include/net/vxlan.h
+++ b/include/net/vxlan.h
@@ -225,9 +225,9 @@ struct vxlan_config {
struct vxlan_dev {
struct hlist_node hlist; /* vni hash table */
struct list_head next; /* vxlan's per namespace list */
- struct vxlan_sock *vn4_sock; /* listening socket for IPv4 */
+ struct vxlan_sock __rcu *vn4_sock; /* listening socket for IPv4 */
#if IS_ENABLED(CONFIG_IPV6)
- struct vxlan_sock *vn6_sock; /* listening socket for IPv6 */
+ struct vxlan_sock __rcu *vn6_sock; /* listening socket for IPv6 */
#endif
struct net_device *dev;
struct net *net; /* netns for packet i/o */