[dpdk-stable] patch 'net/nfp: 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/102de11806c224ac90f65892d6f93cb3e551105a

Thanks.

Luca Boccassi

---
>From 102de11806c224ac90f65892d6f93cb3e551105a Mon Sep 17 00:00:00 2001
From: Steve Yang <stevex.yang at intel.com>
Date: Mon, 18 Jan 2021 07:04:27 +0000
Subject: [PATCH] net/nfp: fix jumbo frame flag condition for MTU set

[ upstream commit a36974f43c69f7a714ffec237461854ae924ce29 ]

The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition.
If the Ether overhead is larger than 18 when it supports VLAN tag,
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 'RTE_ETHER_MTU',
that perhaps impacts the cases of the jumbo frame related.

Fixes: d4a27a3b092a ("nfp: add basic features")

Signed-off-by: Steve Yang <stevex.yang at intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit at intel.com>
---
 drivers/net/nfp/nfp_net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 1608bf5ea1..9ea24e5bda 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -1508,7 +1508,7 @@ nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	}
 
 	/* switch to jumbo mode if needed */
-	if ((uint32_t)mtu > RTE_ETHER_MAX_LEN)
+	if ((uint32_t)mtu > RTE_ETHER_MTU)
 		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
 	else
 		dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
-- 
2.29.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-02-05 11:18:36.584899541 +0000
+++ 0163-net-nfp-fix-jumbo-frame-flag-condition-for-MTU-set.patch	2021-02-05 11:18:29.114696976 +0000
@@ -1 +1 @@
-From a36974f43c69f7a714ffec237461854ae924ce29 Mon Sep 17 00:00:00 2001
+From 102de11806c224ac90f65892d6f93cb3e551105a Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit a36974f43c69f7a714ffec237461854ae924ce29 ]
+
@@ -15 +16,0 @@
-Cc: stable at dpdk.org