RDMA/i40iw: Fix incorrect iterator type

[ Upstream commit 802fa45cd320de319e86c93bca72abec028ba059 ]

Commit f27b4746f378 ("i40iw: add connection management code") uses an
incorrect rcu iterator, whilst holding the rtnl_lock. Since the
critical region invokes i40iw_manage_qhash(), which is a sleeping
function, the rcu locking and traversal cannot be used.

Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index b7f1ce5333cb828d2da4ce4fa2732587d3133a8c..880c63579ba88cb51135ab64a023ad7d3cb8c01e 100644 (file)
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -1667,7 +1667,7 @@ static enum i40iw_status_code i40iw_add_mqh_6(struct i40iw_device *iwdev,
        unsigned long flags;
 
        rtnl_lock();
-       for_each_netdev_rcu(&init_net, ip_dev) {
+       for_each_netdev(&init_net, ip_dev) {
                if ((((rdma_vlan_dev_vlan_id(ip_dev) < I40IW_NO_VLAN) &&
                      (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
                     (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {