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* [dpdk-stable] [PATCH] net/mlx5: fix the RSS consistency check of meter policy
@ 2021-10-18 13:16 Bing Zhao
  2021-10-18 14:43 ` [dpdk-stable] [PATCH v2] " Bing Zhao
  2021-10-20 19:35 ` [dpdk-stable] [PATCH] " Raslan Darawsheh
  0 siblings, 2 replies; 6+ messages in thread
From: Bing Zhao @ 2021-10-18 13:16 UTC (permalink / raw)
  To: viacheslavo, matan; +Cc: dev, rasland, stable

After yellow color actions in the metering policy were supported,
the RSS could be used for both green and yellow colors and only the
queues attribute could be different.

When specifying the attributes of a RSS, some fields can be ignored
and some default values will be used in PMD. For example, there is a
default RSS key in the PMD and it will be used to create the TIR if
nothing is provided by the application.

The default value cases were missed in the current implementation
and it would cause some false positives or crashes.

The comparison function should be adjusted to take all cases into
consideration when RSS is used for both green and yellow colors.

Fixes: 4b7bf3ffb473 ("net/mlx5: support yellow in meter policy validation")
Cc: stable@dpdk.org

Signed-off-by: Bing Zhao <bingz@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 609ab43fb6..828f290308 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -17412,12 +17412,22 @@ static inline int
 flow_dv_mtr_policy_rss_compare(const struct rte_flow_action_rss *r1,
 			       const struct rte_flow_action_rss *r2)
 {
-	if (!r1 || !r2)
+	if (r1 == NULL || r2 == NULL)
 		return 0;
-	if (r1->func != r2->func || r1->level != r2->level ||
-	    r1->types != r2->types || r1->key_len != r2->key_len ||
-	    memcmp(r1->key, r2->key, r1->key_len))
+	if (!(r1->level <= 1 && r2->level <= 1) &&
+	    !(r1->level > 1 && r2->level > 1))
 		return 1;
+	if ((r1->types != r2->types) &&
+	    !((r1->types == 0 || r1->types == ETH_RSS_IP) &&
+	      (r2->types == 0 || r2->types == ETH_RSS_IP)))
+		return 1;
+	if (r1->key || r2->key) {
+		const void *key1 = r1->key ? r1->key : rss_hash_default_key;
+		const void *key2 = r2->key ? r2->key : rss_hash_default_key;
+
+		if (memcmp(key1, key2, MLX5_RSS_HASH_KEY_LEN))
+			return 1;
+	}
 	return 0;
 }
 
-- 
2.27.0


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-11-10 16:19 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-10-18 13:16 [dpdk-stable] [PATCH] net/mlx5: fix the RSS consistency check of meter policy Bing Zhao
2021-10-18 14:43 ` [dpdk-stable] [PATCH v2] " Bing Zhao
2021-11-04  8:56   ` Matan Azrad
2021-11-09  9:57   ` Raslan Darawsheh
2021-11-10 16:16   ` [dpdk-dev] " Ferruh Yigit
2021-10-20 19:35 ` [dpdk-stable] [PATCH] " Raslan Darawsheh

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