diff options
| author |   Robert Shearman <rshearma@vyatta.att-mail.com> | 2018-10-01 09:40:23 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-02 22:28:17 -0700 |
| commit | 854da991733d1b4f60042423875e32be7f8f0421 (patch) | |
| tree | cb646dc4e274a9b6472f6b1d66f5d2e299a21574 /net/ipv4/datagram.c | |
| parent | bridge: mcast: Default back to multicast enabled state (diff) | |
| download | linux-dev-854da991733d1b4f60042423875e32be7f8f0421.tar.xz linux-dev-854da991733d1b4f60042423875e32be7f8f0421.zip | |
ipv4: Allow sending multicast packets on specific i/f using VRF socket
It is useful to be able to use the same socket for listening in a
specific VRF, as for sending multicast packets out of a specific
interface. However, the bound device on the socket currently takes
precedence and results in the packets not being sent.
Relax the condition on overriding the output interface to use for
sending packets out of UDP, raw and ping sockets to allow multicast
packets to be sent using the specified multicast interface.
Signed-off-by: Robert Shearman <rshearma@vyatta.att-mail.com>
Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/datagram.c')
| -rw-r--r-- | net/ipv4/datagram.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c index f915abff1350..300921417f89 100644 --- a/net/ipv4/datagram.c +++ b/net/ipv4/datagram.c @@ -42,7 +42,7 @@ int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len oif = sk->sk_bound_dev_if; saddr = inet->inet_saddr; if (ipv4_is_multicast(usin->sin_addr.s_addr)) { - if (!oif) + if (!oif || netif_index_is_l3_master(sock_net(sk), oif)) oif = inet->mc_index; if (!saddr) saddr = inet->mc_addr; |