IB/cma: Destination and source addr families must match

The destination address in a listening rdma_id does not have an address
family. Since address family in both sides of a connection must be the
same in rdma_bind_addr() we set the address family of the destination to
the address family of the source.

This patch serves the logic in cma_port_is_unique() which requires to
know if destination address that is associated with a rdma_id is any address
(cma_zero_addr() and cma_loopback_addr()).

This can happen when port reuse is checked for a port number
that is being listened to.

Fixes: 19b752a19dce ("IB/cma: Allow port reuse for rdma_id")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index f98ec19a851a8e3c90b068acd236ace6e9265c84..ba60e4b5114cdc01989983369ae29ddfb6328fde 100644 (file)
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -3297,6 +3297,7 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
 {
        struct rdma_id_private *id_priv;
        int ret;
+       struct sockaddr  *daddr;
 
        if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 &&
            addr->sa_family != AF_IB)
@@ -3336,6 +3337,9 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
        if (ret)
                goto err2;
 
+       daddr = cma_dst_addr(id_priv);
+       daddr->sa_family = addr->sa_family;
+
        return 0;
 err2:
        if (id_priv->cma_dev)