[dpdk-stable] patch 'net/qede: accept bigger RSS table' has been queued to stable release 20.11.2

[Xueming Li]

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 05/12/21. 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/74fc31b48fc26dc40080d207fbf577bd53191028

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 74fc31b48fc26dc40080d207fbf577bd53191028 Mon Sep 17 00:00:00 2001
From: Igor Russkikh <irusskikh at marvell.com>
Date: Fri, 19 Mar 2021 10:46:56 +0100
Subject: [PATCH] net/qede: accept bigger RSS table
Cc: Luca Boccassi <bluca at debian.org>

[ upstream commit 6ceb7ab83f168fa6b8e90e4bd5a1392de1a48c70 ]

Some dpdk applications blindly pass fixed side RSS hash tables,
and do not check driver/device capabilities.

Moreover, many other drivers do not do such a strong check as well.

Fix it by making qede accept any size rss_key. For larger key
tables we just crop it with notice trace message.

Signed-off-by: Igor Russkikh <irusskikh at marvell.com>
Acked-by: Rasesh Mody <rmody at marvell.com>
---
 drivers/net/qede/qede_ethdev.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index ab5f5b1065..bfd38a9772 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -2139,8 +2139,10 @@ int qede_rss_hash_update(struct rte_eth_dev *eth_dev,
 		/* RSS hash key */
 		if (key) {
 			if (len > (ECORE_RSS_KEY_SIZE * sizeof(uint32_t))) {
-				DP_ERR(edev, "RSS key length exceeds limit\n");
-				return -EINVAL;
+				len = ECORE_RSS_KEY_SIZE * sizeof(uint32_t);
+				DP_NOTICE(edev, false,
+					  "RSS key length too big, trimmed to %d\n",
+					  len);
 			}
 			DP_INFO(edev, "Applying user supplied hash key\n");
 			rss_params.update_rss_key = 1;
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-05-10 23:59:29.154364800 +0800
+++ 0099-net-qede-accept-bigger-RSS-table.patch	2021-05-10 23:59:26.460000000 +0800
@@ -1 +1 @@
-From 6ceb7ab83f168fa6b8e90e4bd5a1392de1a48c70 Mon Sep 17 00:00:00 2001
+From 74fc31b48fc26dc40080d207fbf577bd53191028 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Luca Boccassi <bluca at debian.org>
+
+[ upstream commit 6ceb7ab83f168fa6b8e90e4bd5a1392de1a48c70 ]
@@ -13,2 +15,0 @@
-
-Cc: stable at dpdk.org