[dpdk-stable] patch 'net/mlx5: fix flow director drop rule deletion crash' has been queued to stable release 18.02.2

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 18.02.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/25/18. So please
shout if anyone has objections.

Thanks.

Luca Boccassi

---
>From 6d97987003e3934445bce722060502251415b0df Mon Sep 17 00:00:00 2001
From: Shahaf Shuler <shahafs at mellanox.com>
Date: Tue, 15 May 2018 09:26:35 +0300
Subject: [PATCH] net/mlx5: fix flow director drop rule deletion crash

[ upstream commit 8fe576ad17a6f091c100dc1c61c11c5fb857f864 ]

Drop flow rules are created on the ETH queue even though the parser layer
matches the flow rule layer (L3/L4)

Fixes: 6f2f4948b236 ("net/mlx5: fix flow director rule deletion crash")

Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
---
 drivers/net/mlx5/mlx5_flow.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index b40c3cac7..f48b68945 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -2854,13 +2854,13 @@ mlx5_fdir_filter_delete(struct rte_eth_dev *dev,
 	if (parser.drop) {
 		struct ibv_flow_spec_action_drop *drop;
 
-		drop = (void *)((uintptr_t)parser.queue[parser.layer].ibv_attr +
-				parser.queue[parser.layer].offset);
+		drop = (void *)((uintptr_t)parser.queue[HASH_RXQ_ETH].ibv_attr +
+				parser.queue[HASH_RXQ_ETH].offset);
 		*drop = (struct ibv_flow_spec_action_drop){
 			.type = IBV_FLOW_SPEC_ACTION_DROP,
 			.size = sizeof(struct ibv_flow_spec_action_drop),
 		};
-		parser.queue[parser.layer].ibv_attr->num_of_specs++;
+		parser.queue[HASH_RXQ_ETH].ibv_attr->num_of_specs++;
 	}
 	TAILQ_FOREACH(flow, &priv->flows, next) {
 		struct ibv_flow_attr *attr;
@@ -2870,11 +2870,14 @@ mlx5_fdir_filter_delete(struct rte_eth_dev *dev,
 		struct ibv_spec_header *flow_h;
 		void *flow_spec;
 		unsigned int specs_n;
+		unsigned int queue_id = parser.drop ? HASH_RXQ_ETH :
+						      parser.layer;
 
-		attr = parser.queue[parser.layer].ibv_attr;
-		flow_attr = flow->frxq[parser.layer].ibv_attr;
+		attr = parser.queue[queue_id].ibv_attr;
+		flow_attr = flow->frxq[queue_id].ibv_attr;
 		/* Compare first the attributes. */
-		if (memcmp(attr, flow_attr, sizeof(struct ibv_flow_attr)))
+		if (!flow_attr ||
+		    memcmp(attr, flow_attr, sizeof(struct ibv_flow_attr)))
 			continue;
 		if (attr->num_of_specs == 0)
 			continue;
-- 
2.14.2