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authorDuncan Eastoe <deastoe@vyatta.att-mail.com>2018-11-07 15:36:06 +0000
committerDavid S. Miller <davem@davemloft.net>2018-11-07 16:12:39 -0800
commit7055420fb6a1cb754a64be99ddcabd45bd902d99 (patch)
tree469b838c4b00ccfc04f3583805eb5ebbf52ab14f /net/ipv6/raw.c
parentnet: provide a sysctl raw_l3mdev_accept for raw socket lookup with VRFs (diff)
downloadlinux-dev-7055420fb6a1cb754a64be99ddcabd45bd902d99.tar.xz
linux-dev-7055420fb6a1cb754a64be99ddcabd45bd902d99.zip
net: fix raw socket lookup device bind matching with VRFs
When there exist a pair of raw sockets one unbound and one bound to a VRF but equal in all other respects, when a packet is received in the VRF context, __raw_v4_lookup() matches on both sockets. This results in the packet being delivered over both sockets, instead of only the raw socket bound to the VRF. The bound device checks in __raw_v4_lookup() are replaced with a call to raw_sk_bound_dev_eq() which correctly handles whether the packet should be delivered over the unbound socket in such cases. In __raw_v6_lookup() the match on the device binding of the socket is similarly updated to use raw_sk_bound_dev_eq() which matches the handling in __raw_v4_lookup(). Importantly raw_sk_bound_dev_eq() takes the raw_l3mdev_accept sysctl into account. Signed-off-by: Duncan Eastoe <deastoe@vyatta.att-mail.com> Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com> Reviewed-by: David Ahern <dsahern@gmail.com> Tested-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/raw.c')
-rw-r--r--net/ipv6/raw.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 5e0efd3954e9..aed7eb5c2123 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -86,9 +86,8 @@ struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
!ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr))
continue;
- if (sk->sk_bound_dev_if &&
- sk->sk_bound_dev_if != dif &&
- sk->sk_bound_dev_if != sdif)
+ if (!raw_sk_bound_dev_eq(net, sk->sk_bound_dev_if,
+ dif, sdif))
continue;
if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {