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From: Xueming Li <xuemingl@nvidia.com>
To: Chengwen Feng <fengchengwen@huawei.com>
CC: Luca Boccassi <bluca@debian.org>, Viacheslav Ovsiienko
<viacheslavo@nvidia.com>, dpdk stable <stable@dpdk.org>
Date: Sat, 12 Jun 2021 07:03:55 +0800
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Subject: [dpdk-stable] patch 'net/mlx4: fix secondary process initialization
ordering' has been queued to stable release 20.11.2
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Errors-To: stable-bounces@dpdk.org
Sender: "stable" <stable-bounces@dpdk.org>
Hi,
FYI, your patch has been queued to stable release 20.11.2
Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/14/21. 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/steevenlee/dpdk
This queued commit can be viewed at:
https://github.com/steevenlee/dpdk/commit/14b6df2399e05851c44075f457088ce63b6480d7
Thanks.
Xueming Li <xuemingl@nvidia.com>
---
>From 14b6df2399e05851c44075f457088ce63b6480d7 Mon Sep 17 00:00:00 2001
From: Chengwen Feng <fengchengwen@huawei.com>
Date: Mon, 10 May 2021 20:06:02 +0800
Subject: [PATCH] net/mlx4: fix secondary process initialization ordering
Cc: Luca Boccassi <bluca@debian.org>
[ upstream commit e5d94cf94e9d7c240e73b390c8c292fc9595f971 ]
The memory barrier is used to ensure that the response is returned
only after the Tx/Rx function is set, it should place after the Rx/Tx
function is set.
Fixes: 0203d33a1059 ("net/mlx4: support secondary process")
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
drivers/net/mlx4/mlx4_mp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/mlx4/mlx4_mp.c b/drivers/net/mlx4/mlx4_mp.c
index 3622d61075..dd72755252 100644
--- a/drivers/net/mlx4/mlx4_mp.c
+++ b/drivers/net/mlx4/mlx4_mp.c
@@ -126,7 +126,6 @@ mp_secondary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
switch (param->type) {
case MLX4_MP_REQ_START_RXTX:
INFO("port %u starting datapath", dev->data->port_id);
- rte_mb();
dev->tx_pkt_burst = mlx4_tx_burst;
dev->rx_pkt_burst = mlx4_rx_burst;
#ifdef HAVE_IBV_MLX4_UAR_MMAP_OFFSET
@@ -144,6 +143,7 @@ mp_secondary_handle(const struct rte_mp_msg *mp_msg, const void *peer)
}
}
#endif
+ rte_mb();
mp_init_msg(dev, &mp_res, param->type);
res->result = 0;
ret = rte_mp_reply(&mp_res, peer);
--
2.25.1
---
Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- - 2021-06-12 06:54:00.181281300 +0800
+++ 0141-net-mlx4-fix-secondary-process-initialization-orderi.patch 2021-06-12 06:53:56.590000000 +0800
@@ -1 +1 @@
-From e5d94cf94e9d7c240e73b390c8c292fc9595f971 Mon Sep 17 00:00:00 2001
+From 14b6df2399e05851c44075f457088ce63b6480d7 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Luca Boccassi <bluca@debian.org>
+
+[ upstream commit e5d94cf94e9d7c240e73b390c8c292fc9595f971 ]
@@ -11 +13,0 @@
-Cc: stable@dpdk.org
@@ -20 +22 @@
-index ddf7bdb9ef..8fcfb5490e 100644
+index 3622d61075..dd72755252 100644