[dpdk-stable] patch 'net/hns3: fix Tx prepare after stop' has been queued to stable release 20.11.3

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/28/21. 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://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/4e210bb1419f3dd6d88037a50f48f0c8515e8492

Thanks.

Luca Boccassi

---
>From 4e210bb1419f3dd6d88037a50f48f0c8515e8492 Mon Sep 17 00:00:00 2001
From: Huisong Li <lihuisong at huawei.com>
Date: Sat, 17 Jul 2021 10:02:56 +0800
Subject: [PATCH] net/hns3: fix Tx prepare after stop

[ upstream commit 1cc574c41a8e4a901b822aad9c85a07e98a7b661 ]

In some special scenarios, such as TSO scenarios, the user layer may need
to call the tx_pkt_prepare(), and then call tx_pkt_burst() to send packets.
If the return value of tx_pkt_parepare() isn't equal to the numbers of
packets requested to send, warning message may be printed at the user
layer. Currently, tx_pkt_prepare() is assigned to dummy function when
dev_stop() is called in hns3 PMD. At this moment, if user layer continues
to send packets, the warning message will always be printed. So this patch
modifies the address to NULL.

Fixes: 2790c6464725 ("net/hns3: support device reset")

Signed-off-by: Huisong Li <lihuisong at huawei.com>
Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
---
 drivers/net/hns3/hns3_rxtx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 2a92b1cf49..ad9ead47cc 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -3918,7 +3918,7 @@ void hns3_set_rxtx_function(struct rte_eth_dev *eth_dev)
 	} else {
 		eth_dev->rx_pkt_burst = hns3_dummy_rxtx_burst;
 		eth_dev->tx_pkt_burst = hns3_dummy_rxtx_burst;
-		eth_dev->tx_pkt_prepare = hns3_dummy_rxtx_burst;
+		eth_dev->tx_pkt_prepare = NULL;
 	}
 }
 
-- 
2.30.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-07-26 13:53:18.294919232 +0100
+++ 0044-net-hns3-fix-Tx-prepare-after-stop.patch	2021-07-26 13:53:15.933294388 +0100
@@ -1 +1 @@
-From 1cc574c41a8e4a901b822aad9c85a07e98a7b661 Mon Sep 17 00:00:00 2001
+From 4e210bb1419f3dd6d88037a50f48f0c8515e8492 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 1cc574c41a8e4a901b822aad9c85a07e98a7b661 ]
+
@@ -16 +17,0 @@
-Cc: stable at dpdk.org
@@ -25 +26 @@
-index a86e105fbc..d3fbe082e6 100644
+index 2a92b1cf49..ad9ead47cc 100644
@@ -28 +29 @@
-@@ -4386,7 +4386,7 @@ void hns3_set_rxtx_function(struct rte_eth_dev *eth_dev)
+@@ -3918,7 +3918,7 @@ void hns3_set_rxtx_function(struct rte_eth_dev *eth_dev)