net/smc: no new connections on disappearing devices
Add a "going_away" indication to ISM devices and IB ports and
avoid creation of new connections on such disappearing devices.
And do not handle ISM events if ISM device is disappearing.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index bab2da8..6b7799b 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -781,6 +781,7 @@ static void smc_pnet_find_rdma_dev(struct net_device *netdev,
dev_put(ndev);
if (netdev == ndev &&
smc_ib_port_active(ibdev, i) &&
+ !test_bit(i - 1, ibdev->ports_going_away) &&
!smc_ib_determine_gid(ibdev, i, ini->vlan_id,
ini->ib_gid, NULL)) {
ini->ib_dev = ibdev;
@@ -820,6 +821,7 @@ static void smc_pnet_find_roce_by_pnetid(struct net_device *ndev,
continue;
if (smc_pnet_match(ibdev->pnetid[i - 1], ndev_pnetid) &&
smc_ib_port_active(ibdev, i) &&
+ !test_bit(i - 1, ibdev->ports_going_away) &&
!smc_ib_determine_gid(ibdev, i, ini->vlan_id,
ini->ib_gid, NULL)) {
ini->ib_dev = ibdev;
@@ -846,7 +848,8 @@ static void smc_pnet_find_ism_by_pnetid(struct net_device *ndev,
spin_lock(&smcd_dev_list.lock);
list_for_each_entry(ismdev, &smcd_dev_list.list, list) {
- if (smc_pnet_match(ismdev->pnetid, ndev_pnetid)) {
+ if (smc_pnet_match(ismdev->pnetid, ndev_pnetid) &&
+ !ismdev->going_away) {
ini->ism_dev = ismdev;
break;
}