[dpdk-stable] patch 'net/hns3: fix jumbo frame flag condition for MTU set' has been queued to stable release 20.11.1

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/07/21. 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/825fcdb26dd57849331d68fb3d88c57b0714e5d3

Thanks.

Luca Boccassi

---
>From 825fcdb26dd57849331d68fb3d88c57b0714e5d3 Mon Sep 17 00:00:00 2001
From: Steve Yang <stevex.yang at intel.com>
Date: Mon, 18 Jan 2021 07:04:12 +0000
Subject: [PATCH] net/hns3: fix jumbo frame flag condition for MTU set

[ upstream commit 3ec35c64be8f93619a04e725bf4af9ecb5329ef0 ]

The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition,
but the Ether overhead is larger than 18 when it supports dual VLAN tags.
That will cause the jumbo flag rx offload is wrong when MTU size is
'RTE_ETHER_MTU'.

This fix will change the boundary condition with 'HSN3_DEFAULT_FRAME_LEN',
that perhaps impacts the cases of the jumbo frame related.

Fixes: 1f5ca0b460cd ("net/hns3: support some device operations")
Fixes: a5475d61fa34 ("net/hns3: support VF")

Signed-off-by: Steve Yang <stevex.yang at intel.com>
Acked-by: Lijun Ou <oulijun at huawei.com>
---
 drivers/net/hns3/hns3_ethdev.c    | 2 +-
 drivers/net/hns3/hns3_ethdev_vf.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 3f6ba61a37..03d6df716d 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -2458,7 +2458,7 @@ hns3_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	}
 
 	rte_spinlock_lock(&hw->lock);
-	is_jumbo_frame = frame_size > RTE_ETHER_MAX_LEN ? true : false;
+	is_jumbo_frame = frame_size > HNS3_DEFAULT_FRAME_LEN ? true : false;
 	frame_size = RTE_MAX(frame_size, HNS3_DEFAULT_FRAME_LEN);
 
 	/*
diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 0366b9d4dc..d47af417bf 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -928,7 +928,7 @@ hns3vf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 		rte_spinlock_unlock(&hw->lock);
 		return ret;
 	}
-	if (frame_size > RTE_ETHER_MAX_LEN)
+	if (mtu > RTE_ETHER_MTU)
 		dev->data->dev_conf.rxmode.offloads |=
 						DEV_RX_OFFLOAD_JUMBO_FRAME;
 	else
-- 
2.29.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-02-05 11:18:35.933267946 +0000
+++ 0148-net-hns3-fix-jumbo-frame-flag-condition-for-MTU-set.patch	2021-02-05 11:18:29.058695910 +0000
@@ -1 +1 @@
-From 3ec35c64be8f93619a04e725bf4af9ecb5329ef0 Mon Sep 17 00:00:00 2001
+From 825fcdb26dd57849331d68fb3d88c57b0714e5d3 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 3ec35c64be8f93619a04e725bf4af9ecb5329ef0 ]
+
@@ -16 +17,0 @@
-Cc: stable at dpdk.org
@@ -26 +27 @@
-index 90544fe328..bf633a3d71 100644
+index 3f6ba61a37..03d6df716d 100644
@@ -29 +30 @@
-@@ -2467,7 +2467,7 @@ hns3_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
+@@ -2458,7 +2458,7 @@ hns3_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
@@ -39 +40 @@
-index f09cabcd82..ef03fb1c4e 100644
+index 0366b9d4dc..d47af417bf 100644