patch 'net/iavf: fix VLAN offload with AVX512' has been queued to stable release 22.11.3

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 22.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/11/23. 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=8a0712739d0709e037cd2d8e9c01c6c888f4c574

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 8a0712739d0709e037cd2d8e9c01c6c888f4c574 Mon Sep 17 00:00:00 2001
From: Michal Schmidt <mschmidt at redhat.com>
Date: Mon, 27 Mar 2023 12:07:50 +0200
Subject: [PATCH] net/iavf: fix VLAN offload with AVX512
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 32aa88de4dd03b24afeb83195ffe6141b253f7c4 ]

It has been observed that mbufs of some received VLAN packets had the
VLAN tag correctly set in vlan_tci, but ol_flags were missing the
VLAN-indicating flags.

_mm256_shuffle_epi8 operates as two independent 128-bit operations,
not as a single 256-bit operation. To have the RTE_MBUF_F_RX_VLAN* flags
reflected in the resulting vlan_flags for all 8 rx descriptors, the
input l2tag2_flags_shuf must contain the required pattern in both
128-bit halves.

This fix is for the AVX512 Rx path. The same bug in AVX2 was fixed
by commit eb24917428a1 ("net/iavf: fix VLAN offload with AVX2").

Fixes: 4b64ccb328c9 ("net/iavf: fix VLAN extraction in AVX512 path")

Signed-off-by: Michal Schmidt <mschmidt at redhat.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
---
 drivers/net/iavf/iavf_rxtx_vec_avx512.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/iavf/iavf_rxtx_vec_avx512.c b/drivers/net/iavf/iavf_rxtx_vec_avx512.c
index b416a716cf..b0546a14c6 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_avx512.c
+++ b/drivers/net/iavf/iavf_rxtx_vec_avx512.c
@@ -1338,7 +1338,10 @@ _iavf_recv_raw_pkts_vec_avx512_flex_rxd(struct iavf_rx_queue *rxq,
 							(0, 0, 0, 0,
 							 0, 0, 0, 0,
 							 0, 0, 0, 0,
-							 0, 0, 0, 0,
+							 0, 0,
+							 RTE_MBUF_F_RX_VLAN |
+							 RTE_MBUF_F_RX_VLAN_STRIPPED,
+							 0,
 							 /* end up 128-bits */
 							 0, 0, 0, 0,
 							 0, 0, 0, 0,
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2023-08-09 21:51:19.149212100 +0800
+++ 0035-net-iavf-fix-VLAN-offload-with-AVX512.patch	2023-08-09 21:51:18.164352000 +0800
@@ -1 +1 @@
-From 32aa88de4dd03b24afeb83195ffe6141b253f7c4 Mon Sep 17 00:00:00 2001
+From 8a0712739d0709e037cd2d8e9c01c6c888f4c574 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 32aa88de4dd03b24afeb83195ffe6141b253f7c4 ]
@@ -20 +22,0 @@
-Cc: stable at dpdk.org
@@ -29 +31 @@
-index 4fe9b97278..bd2788121b 100644
+index b416a716cf..b0546a14c6 100644
@@ -32 +34 @@
-@@ -1214,7 +1214,10 @@ _iavf_recv_raw_pkts_vec_avx512_flex_rxd(struct iavf_rx_queue *rxq,
+@@ -1338,7 +1338,10 @@ _iavf_recv_raw_pkts_vec_avx512_flex_rxd(struct iavf_rx_queue *rxq,