nvme-fc: fail new connections to a deleted host or remote port

The lldd may have made calls to delete a remote port or local port and
the delete is in progress when the cli then attempts to create a new
controller. Currently, this proceeds without error although it can't be
very successful.

Fix this by validating that both the host port and remote port are
present when a new controller is to be created.

Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index e8ef42b..e2e09e2 100644 (file)
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -3671,12 +3671,14 @@ nvme_fc_create_ctrl(struct device *dev, struct nvmf_ctrl_options *opts)
        spin_lock_irqsave(&nvme_fc_lock, flags);
        list_for_each_entry(lport, &nvme_fc_lport_list, port_list) {
                if (lport->localport.node_name != laddr.nn ||
-                   lport->localport.port_name != laddr.pn)
+                   lport->localport.port_name != laddr.pn ||
+                   lport->localport.port_state != FC_OBJSTATE_ONLINE)
                        continue;
 
                list_for_each_entry(rport, &lport->endp_list, endp_list) {
                        if (rport->remoteport.node_name != raddr.nn ||
-                           rport->remoteport.port_name != raddr.pn)
+                           rport->remoteport.port_name != raddr.pn ||
+                           rport->remoteport.port_state != FC_OBJSTATE_ONLINE)
                                continue;
 
                        /* if fail to get reference fall through. Will error */