diff mbox

[dpdk-dev,v2,28/29] net/mlx4: disable UDP support in RSS flow rules

Message ID 36a1ee107ea18a513acd5822231724de6286f29a.1507809961.git.adrien.mazarguil@6wind.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Adrien Mazarguil Oct. 12, 2017, 12:19 p.m. UTC 
  When part of the RSS hash calculation, UDP packets are discarded (not
received on any queue) likely due to an issue with the kernel
implementation.

Temporarily disable UDP RSS support until this issue is resolved.

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
---
 drivers/net/mlx4/mlx4_flow.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/mlx4/mlx4_flow.c b/drivers/net/mlx4/mlx4_flow.c
index 2b60d76..4c498f0 100644
--- a/drivers/net/mlx4/mlx4_flow.c
+++ b/drivers/net/mlx4/mlx4_flow.c
@@ -133,9 +133,11 @@  mlx4_conv_rss_hf(uint64_t rss_hf)
 		[TCP] = (ETH_RSS_NONFRAG_IPV4_TCP |
 			 ETH_RSS_NONFRAG_IPV6_TCP |
 			 ETH_RSS_IPV6_TCP_EX),
-		[UDP] = (ETH_RSS_NONFRAG_IPV4_UDP |
-			 ETH_RSS_NONFRAG_IPV6_UDP |
-			 ETH_RSS_IPV6_UDP_EX),
+		/*
+		 * UDP support is temporarily disabled due to an
+		 * implementation issue in the kernel.
+		 */
+		[UDP] = 0,
 	};
 	const uint64_t out[RTE_DIM(in)] = {
 		[IPV4] = IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4,
@@ -753,10 +755,8 @@  mlx4_flow_prepare(struct priv *priv,
 					.rss_key = mlx4_rss_hash_key_default,
 					.rss_key_len = MLX4_RSS_HASH_KEY_SIZE,
 					.rss_hf = (ETH_RSS_IPV4 |
-						   ETH_RSS_NONFRAG_IPV4_UDP |
 						   ETH_RSS_NONFRAG_IPV4_TCP |
 						   ETH_RSS_IPV6 |
-						   ETH_RSS_NONFRAG_IPV6_UDP |
 						   ETH_RSS_NONFRAG_IPV6_TCP),
 				};
 			/* Sanity checks. */