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authorJiri Benc <jbenc@redhat.com>2015-09-17 16:11:11 +0200
committerDavid S. Miller <davem@davemloft.net>2015-09-17 22:32:15 -0700
commit057ba29bbe85e9587635e3128b26fa30fe849af9 (patch)
tree685d07701d836d2f1122e06c000668b833136b4c /drivers
parent9dc2ad1008c9f91f55ec6c89ec0f8639dfc91596 (diff)
vxlan: reject IPv6 addresses if IPv6 is not configured
When IPv6 address is set without IPv6 configured, the vxlan socket is mostly treated as an IPv4 one but various lookus in fdb etc. still take the AF_INET6 into account. This creates incosistencies with weird consequences. Just reject IPv6 addresses in such case. Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/vxlan.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 6ebe562af04e..bbac1d35ed4e 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2636,8 +2636,11 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
dst->remote_ip.sa.sa_family = AF_INET;
if (dst->remote_ip.sa.sa_family == AF_INET6 ||
- vxlan->cfg.saddr.sa.sa_family == AF_INET6)
+ vxlan->cfg.saddr.sa.sa_family == AF_INET6) {
+ if (!IS_ENABLED(CONFIG_IPV6))
+ return -EPFNOSUPPORT;
use_ipv6 = true;
+ }
if (conf->remote_ifindex) {
struct net_device *lowerdev