From: Igor Russkikh <irusskikh@marvell.com>
Date: Fri, 19 Mar 2021 09:46:56 +0000 (+0100)
Subject: net/qede: accept bigger RSS table
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6ceb7ab83f168fa6b8e90e4bd5a1392de1a48c70;p=dpdk.git

net/qede: accept bigger RSS table

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.

Cc: stable@dpdk.org

Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Acked-by: Rasesh Mody <rmody@marvell.com>
---

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;