From 486798001b92eacbf9f809787a6348750c174035 Mon Sep 17 00:00:00 2001 From: Sowmini Varadhan Date: Sun, 11 Oct 2015 16:46:03 -0400 Subject: [PATCH] RDS: Invoke ->laddr_check() in rds_bind() for explicitly bound transports. The IP address passed to rds_bind() should be vetted by the transport's ->laddr_check() for a previously bound transport. This needs to be done to avoid cases where, for example, the application has asked for an IB transport, but the IP address passed to bind is only usable on ethernet interfaces. Signed-off-by: Sowmini Varadhan Acked-by: Santosh Shilimkar Signed-off-by: David S. Miller --- net/rds/bind.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/net/rds/bind.c b/net/rds/bind.c index bc6b93e..6192566 100644 --- a/net/rds/bind.c +++ b/net/rds/bind.c @@ -196,7 +196,14 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) goto out; if (rs->rs_transport) { /* previously bound */ - ret = 0; + trans = rs->rs_transport; + if (trans->laddr_check(sock_net(sock->sk), + sin->sin_addr.s_addr) != 0) { + ret = -ENOPROTOOPT; + rds_remove_bound(rs); + } else { + ret = 0; + } goto out; } trans = rds_trans_get_preferred(sock_net(sock->sk), -- 2.7.4