diff options
| author |   Paolo Abeni <pabeni@redhat.com> | 2018-05-09 12:42:34 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-05-10 15:42:52 -0400 |
| commit | 69678bcd4d2dedbc3e8fcd6d7d99f283d83c531a (patch) | |
| tree | aab79290eb0dc7546f975ed765a84dee3c2bb3c9 | |
| parent | ipv4: reset fnhe_mtu_locked after cache route flushed (diff) | |
| download | linux-dev-69678bcd4d2dedbc3e8fcd6d7d99f283d83c531a.tar.xz linux-dev-69678bcd4d2dedbc3e8fcd6d7d99f283d83c531a.zip | |
udp: fix SO_BINDTODEVICE
Damir reported a breakage of SO_BINDTODEVICE for UDP sockets.
In absence of VRF devices, after commit fb74c27735f0 ("net:
ipv4: add second dif to udp socket lookups") the dif mismatch
isn't fatal anymore for UDP socket lookup with non null
sk_bound_dev_if, breaking SO_BINDTODEVICE semantics.
This changeset addresses the issue making the dif match mandatory
again in the above scenario.
Reported-by: Damir Mansurov <dnman@oktetlabs.ru>
Fixes: fb74c27735f0 ("net: ipv4: add second dif to udp socket lookups")
Fixes: 1801b570dd2a ("net: ipv6: add second dif to udp socket lookups")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/udp.c | 4 | ||||
| -rw-r--r-- | net/ipv6/udp.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 24b5c59b1c53..c2a292dfd137 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -401,9 +401,9 @@ static int compute_score(struct sock *sk, struct net *net, bool dev_match = (sk->sk_bound_dev_if == dif || sk->sk_bound_dev_if == sdif); - if (exact_dif && !dev_match) + if (!dev_match) return -1; - if (sk->sk_bound_dev_if && dev_match) + if (sk->sk_bound_dev_if) score += 4; } diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 4ec76a87aeb8..ea0730028e5d 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -148,9 +148,9 @@ static int compute_score(struct sock *sk, struct net *net, bool dev_match = (sk->sk_bound_dev_if == dif || sk->sk_bound_dev_if == sdif); - if (exact_dif && !dev_match) + if (!dev_match) return -1; - if (sk->sk_bound_dev_if && dev_match) + if (sk->sk_bound_dev_if) score++; } |