diff mbox

[dpdk-dev,v1,28/29] net/mlx4: disable UDP support in RSS flow rules

Message ID 446ad7c02d24ecaa27244e3b658d0cbd19b5e975.1507730496.git.adrien.mazarguil@6wind.com (mailing list archive)
State Superseded, archived
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation fail apply patch file failure

Commit Message

Adrien Mazarguil Oct. 11, 2017, 2:35 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 101f245..41b7a4c 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. */