[PATCH 4.19 179/361] IB/mlx5: Allow transition of DCI QP to reset

From: Greg Kroah-Hartman
Date: Sun Nov 11 2018 - 19:00:25 EST


4.19-stable review patch. If anyone has any objections, please let me know.

------------------

From: Moni Shoua <monis@xxxxxxxxxxxx>

[ Upstream commit 99ed748e878a99c6c7b87bbec063eefd9e47cb42 ]

The transition is allowed from any state and the atrribute mask must be
IB_QP_STATE.

Fixes: c32a4f296e1d ("IB/mlx5: Add support for DC Initiator QP")
Signed-off-by: Moni Shoua <monis@xxxxxxxxxxxx>
Reviewed-by: Artemy Kovalyov <artemyko@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/qp.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -3243,7 +3243,9 @@ static bool modify_dci_qp_is_ok(enum ib_
int req = IB_QP_STATE;
int opt = 0;

- if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
+ if (new_state == IB_QPS_RESET) {
+ return is_valid_mask(attr_mask, req, opt);
+ } else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
return is_valid_mask(attr_mask, req, opt);
} else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {