diff mbox series

[rdma-rc,2/2] RDMA/irdma: Do not hold qos mutex twice on QP resume

Message ID 20211019151654.1943-2-shiraz.saleem@intel.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series [rdma-rc,1/2] RDMA/irdma: Set VLAN in UD work completion correctly | expand

Commit Message

Saleem, Shiraz Oct. 19, 2021, 3:16 p.m. UTC 
From: Mustafa Ismail <mustafa.ismail@intel.com>

When irdma_ws_add fails, irdma_ws_remove is used to cleanup the leaf node.
This lead to holding the qos mutex twice in the QP resume path. Fix this
by avoiding the call to irdma_ws_remove and unwinding the error in
irdma_ws_add. This skips the call to irdma_tc_in_use function which is not
needed in the error unwind cases.

Fixes: 3ae331c75128 ("RDMA/irdma: Add QoS definitions")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
---
 drivers/infiniband/hw/irdma/ws.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/hw/irdma/ws.c b/drivers/infiniband/hw/irdma/ws.c
index b68c575..b0d6ee0 100644
--- a/drivers/infiniband/hw/irdma/ws.c
+++ b/drivers/infiniband/hw/irdma/ws.c
@@ -330,8 +330,10 @@  enum irdma_status_code irdma_ws_add(struct irdma_sc_vsi *vsi, u8 user_pri)
 
 		tc_node->enable = true;
 		ret = irdma_ws_cqp_cmd(vsi, tc_node, IRDMA_OP_WS_MODIFY_NODE);
-		if (ret)
+		if (ret) {
+			vsi->unregister_qset(vsi, tc_node);
 			goto reg_err;
+		}
 	}
 	ibdev_dbg(to_ibdev(vsi->dev),
 		  "WS: Using node %d which represents VSI %d TC %d\n",
@@ -350,6 +352,10 @@  enum irdma_status_code irdma_ws_add(struct irdma_sc_vsi *vsi, u8 user_pri)
 	}
 	goto exit;
 
+reg_err:
+	irdma_ws_cqp_cmd(vsi, tc_node, IRDMA_OP_WS_DELETE_NODE);
+	list_del(&tc_node->siblings);
+	irdma_free_node(vsi, tc_node);
 leaf_add_err:
 	if (list_empty(&vsi_node->child_list_head)) {
 		if (irdma_ws_cqp_cmd(vsi, vsi_node, IRDMA_OP_WS_DELETE_NODE))
@@ -369,11 +375,6 @@  enum irdma_status_code irdma_ws_add(struct irdma_sc_vsi *vsi, u8 user_pri)
 exit:
 	mutex_unlock(&vsi->dev->ws_mutex);
 	return ret;
-
-reg_err:
-	mutex_unlock(&vsi->dev->ws_mutex);
-	irdma_ws_remove(vsi, user_pri);
-	return ret;
 }
 
 /**