[PATCH v1] net/mlx5: fix quit assert when no meter green action

[PATCH v1] net/mlx5: fix quit assert when no meter green action

[Shun Hao]

When a meter with RSS action being used, there might be several
sub-flows using different sub-policies in the flow splitting stage.
If there's no green action, there's an error that will always use the
same sub-policy for all sub-flows, some resources will be
overwritten and cannot be released, leading assert during port close.

This patch fixes this issue by checking both green and yellow queue
index during getting a blank sub-policy, to avoid the incorrect
resource overwrite.

Fixes: b38a12272b3a ("net/mlx5: split meter color policy handling")
Cc: stable@dpdk.org

Signed-off-by: Shun Hao <shunh@nvidia.com>
Acked-by: Matan Azard <matan@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 1e9bd63635..14f85efc90 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -17051,7 +17051,8 @@ __flow_dv_meter_get_rss_sub_policy(struct rte_eth_dev *dev,
 		}
 	}
 	/* Create sub policy. */
-	if (!mtr_policy->sub_policys[domain][0]->rix_hrxq[0]) {
+	if (!mtr_policy->sub_policys[domain][0]->rix_hrxq[RTE_COLOR_GREEN] &&
+	    !mtr_policy->sub_policys[domain][0]->rix_hrxq[RTE_COLOR_YELLOW]) {
 		/* Reuse the first pre-allocated sub_policy. */
 		sub_policy = mtr_policy->sub_policys[domain][0];
 		sub_policy_idx = sub_policy->idx;
-- 
2.20.0

RE: [PATCH v1] net/mlx5: fix quit assert when no meter green action

[Raslan Darawsheh]

Hi,

> -----Original Message-----
> From: Shun Hao <shunh@nvidia.com>
> Sent: Thursday, April 14, 2022 10:55 AM
> To: Slava Ovsiienko <viacheslavo@nvidia.com>; Matan Azrad
> <matan@nvidia.com>; Ori Kam <orika@nvidia.com>; Bing Zhao
> <bingz@nvidia.com>
> Cc: dev@dpdk.org; Raslan Darawsheh <rasland@nvidia.com>;
> stable@dpdk.org
> Subject: [PATCH v1] net/mlx5: fix quit assert when no meter green action
> 
> When a meter with RSS action being used, there might be several
> sub-flows using different sub-policies in the flow splitting stage.
> If there's no green action, there's an error that will always use the
> same sub-policy for all sub-flows, some resources will be
> overwritten and cannot be released, leading assert during port close.
> 
> This patch fixes this issue by checking both green and yellow queue
> index during getting a blank sub-policy, to avoid the incorrect
> resource overwrite.
> 
> Fixes: b38a12272b3a ("net/mlx5: split meter color policy handling")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Shun Hao <shunh@nvidia.com>
> Acked-by: Matan Azard <matan@nvidia.com>

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh