[dpdk-stable] patch 'net/ipn3ke: 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/1cad5abaa6b8a5f6391a8fc6e2c4bd21c676e940

Thanks.

Luca Boccassi

---
>From 1cad5abaa6b8a5f6391a8fc6e2c4bd21c676e940 Mon Sep 17 00:00:00 2001
From: Steve Yang <stevex.yang at intel.com>
Date: Mon, 18 Jan 2021 07:04:16 +0000
Subject: [PATCH] net/ipn3ke: fix jumbo frame flag condition for MTU set

[ upstream commit 6f4edbadeabb0a5204de972df99607046e79e77c ]

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 'RTE_ETHER_MTU' and
overhead, that perhaps impacts the cases of the jumbo frame related.

Fixes: 70d6b7f550f4 ("net/ipn3ke: add representor")

Signed-off-by: Steve Yang <stevex.yang at intel.com>
Reviewed-by: Rosen Xu <rosen.xu at intel.com>
---
 drivers/net/ipn3ke/ipn3ke_ethdev.h      | 1 +
 drivers/net/ipn3ke/ipn3ke_representor.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ipn3ke/ipn3ke_ethdev.h b/drivers/net/ipn3ke/ipn3ke_ethdev.h
index 9b0cf309c8..a6815a9cca 100644
--- a/drivers/net/ipn3ke/ipn3ke_ethdev.h
+++ b/drivers/net/ipn3ke/ipn3ke_ethdev.h
@@ -640,6 +640,7 @@ ipn3ke_tm_ops_get(struct rte_eth_dev *ethdev,
  */
 #define IPN3KE_ETH_OVERHEAD \
 	(RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + IPN3KE_VLAN_TAG_SIZE * 2)
+#define IPN3KE_ETH_MAX_LEN (RTE_ETHER_MTU + IPN3KE_ETH_OVERHEAD)
 
 #define IPN3KE_MAC_FRAME_SIZE_MAX    9728
 #define IPN3KE_MAC_RX_FRAME_MAXLENGTH    0x00AE
diff --git a/drivers/net/ipn3ke/ipn3ke_representor.c b/drivers/net/ipn3ke/ipn3ke_representor.c
index 8a53602576..9e15cce34f 100644
--- a/drivers/net/ipn3ke/ipn3ke_representor.c
+++ b/drivers/net/ipn3ke/ipn3ke_representor.c
@@ -2801,7 +2801,7 @@ ipn3ke_rpst_mtu_set(struct rte_eth_dev *ethdev, uint16_t mtu)
 		return -EBUSY;
 	}
 
-	if (frame_size > RTE_ETHER_MAX_LEN)
+	if (frame_size > IPN3KE_ETH_MAX_LEN)
 		dev_data->dev_conf.rxmode.offloads |=
 			(uint64_t)(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 11:18:36.130432469 +0000
+++ 0152-net-ipn3ke-fix-jumbo-frame-flag-condition-for-MTU-se.patch	2021-02-05 11:18:29.086696443 +0000
@@ -1 +1 @@
-From 6f4edbadeabb0a5204de972df99607046e79e77c Mon Sep 17 00:00:00 2001
+From 1cad5abaa6b8a5f6391a8fc6e2c4bd21c676e940 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 6f4edbadeabb0a5204de972df99607046e79e77c ]
+
@@ -15 +16,0 @@
-Cc: stable at dpdk.org