From: Parav Pandit Date: Mon, 16 Jul 2018 08:50:13 +0000 (+0300) Subject: RDMA/cma: Do not ignore net namespace for unbound cm_id X-Git-Tag: v4.9.128~6 X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=64b40135e41f677eeef1ad7de98cc1a02ea79ce3;p=linux RDMA/cma: Do not ignore net namespace for unbound cm_id [ Upstream commit 643d213a9a034fa04f5575a40dfc8548e33ce04f ] Currently if the cm_id is not bound to any netdevice, than for such cm_id, net namespace is ignored; which is incorrect. Regardless of cm_id bound to a netdevice or not, net namespace must match. When a cm_id is bound to a netdevice, in such case net namespace and netdevice both must match. Fixes: 4c21b5bcef73 ("IB/cma: Add net_dev and private data checks to RDMA CM") Signed-off-by: Parav Pandit Reviewed-by: Daniel Jurgens Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index cbe5324c4331..575afba1056a 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -1409,9 +1409,16 @@ static bool cma_match_net_dev(const struct rdma_cm_id *id, (addr->src_addr.ss_family == AF_IB || cma_protocol_roce_dev_port(id->device, port_num)); - return !addr->dev_addr.bound_dev_if || - (net_eq(dev_net(net_dev), addr->dev_addr.net) && - addr->dev_addr.bound_dev_if == net_dev->ifindex); + /* + * Net namespaces must match, and if the listner is listening + * on a specific netdevice than netdevice must match as well. + */ + if (net_eq(dev_net(net_dev), addr->dev_addr.net) && + (!!addr->dev_addr.bound_dev_if == + (addr->dev_addr.bound_dev_if == net_dev->ifindex))) + return true; + else + return false; } static struct rdma_id_private *cma_find_listener(