patch 'net/mlx5: fix shared Rx queue list management' has been queued to stable release 22.11.4

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 22.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 12/13/23. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://git.dpdk.org/dpdk-stable/log/?h=22.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=22.11-staging&id=c9e75ba878863c8535670b6137fd6d9380388444

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From c9e75ba878863c8535670b6137fd6d9380388444 Mon Sep 17 00:00:00 2001
From: Bing Zhao <bingz at nvidia.com>
Date: Mon, 13 Nov 2023 09:24:48 +0200
Subject: [PATCH] net/mlx5: fix shared Rx queue list management
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit bcc220cb57d7a2c45703c7215aad2320ac0a1e51 ]

In shared Rx queue case, the shared control structure could only be
released after the last port's dereference in the group.

There is another management list that holding all of the used Rx
queues' structures for a port. If the reference count of a control
structure is changed to zero during port close, it can be removed
from the list directly without freeing the resource.

Fixes: 09c2555303be ("net/mlx5: support shared Rx queue")

Signed-off-by: Bing Zhao <bingz at nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
---
 drivers/net/mlx5/mlx5_rxq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 6b2af87cd2..834707ea87 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -2277,6 +2277,7 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
 					RTE_ETH_QUEUE_STATE_STOPPED;
 		}
 	} else { /* Refcnt zero, closing device. */
+		LIST_REMOVE(rxq_ctrl, next);
 		LIST_REMOVE(rxq, owner_entry);
 		if (LIST_EMPTY(&rxq_ctrl->owners)) {
 			if (!rxq_ctrl->is_hairpin)
@@ -2284,7 +2285,6 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
 					(&rxq_ctrl->rxq.mr_ctrl.cache_bh);
 			if (rxq_ctrl->rxq.shared)
 				LIST_REMOVE(rxq_ctrl, share_entry);
-			LIST_REMOVE(rxq_ctrl, next);
 			mlx5_free(rxq_ctrl);
 		}
 		dev->data->rx_queues[idx] = NULL;
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2023-12-11 17:56:26.105760100 +0800
+++ 0093-net-mlx5-fix-shared-Rx-queue-list-management.patch	2023-12-11 17:56:23.197652300 +0800
@@ -1 +1 @@
-From bcc220cb57d7a2c45703c7215aad2320ac0a1e51 Mon Sep 17 00:00:00 2001
+From c9e75ba878863c8535670b6137fd6d9380388444 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit bcc220cb57d7a2c45703c7215aad2320ac0a1e51 ]
@@ -15 +17,0 @@
-Cc: stable at dpdk.org
@@ -24 +26 @@
-index 88b2dc54b3..2c51af11c7 100644
+index 6b2af87cd2..834707ea87 100644
@@ -27 +29 @@
-@@ -2280,6 +2280,7 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
+@@ -2277,6 +2277,7 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
@@ -35 +37 @@
-@@ -2287,7 +2288,6 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)
+@@ -2284,7 +2285,6 @@ mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx)