[dpdk-dev] [PATCH] net/mlx5: revert multicast rule Verbs flow type

[Shahaf Shuler]

This is to revert the following commits:
commit da646bd93888 ("net/mlx5: fix all multi verification code position")
commit 0a40a1363a4d ("net/mlx5: fix flow type for allmulti rules")

The last one introduced a bug in the following diff:
@ -1262,6 +1274,7 @@ struct ibv_spec_header {
                eth.val.ether_type &= eth.mask.ether_type;
        }
        mlx5_flow_create_copy(parser, &eth, eth_size);
+       parser->allmulti = eth.val.dst_mac[0] & 1;
        return 0;
 }

As broadcast rules will be considered of type allmulti as well.

The patch was originally intended to enable VF to receive all multicast
traffic by using the IBV_FLOW_ATTR_MC_DEFAULT flow type.
Since the support was removed from the kernel there is no point with
fixing this issue, hence the revert.

Cc: nelio.laranjeiro at 6wind.com
Cc: rasland at mellanox.com
Cc: stable at dpdk.org

Signed-off-by: Shahaf Shuler <shahafs at mellanox.com>
---
 drivers/net/mlx5/mlx5_flow.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index f88ece123..323dab723 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -391,7 +391,6 @@ static const struct mlx5_flow_items mlx5_flow_items[] = {
 /** Structure to pass to the conversion function. */
 struct mlx5_flow_parse {
 	uint32_t inner; /**< Set once VXLAN is encountered. */
-	uint32_t allmulti:1; /**< Set once allmulti dst MAC is encountered. */
 	uint32_t create:1;
 	/**< Whether resources should remain after a validate. */
 	uint32_t drop:1; /**< Target is a drop queue. */
@@ -1128,17 +1127,6 @@ priv_flow_convert(struct priv *priv,
 			attr->priority +
 			hash_rxq_init[parser->layer].flow_priority;
 	}
-	if (parser->allmulti &&
-	    parser->layer == HASH_RXQ_ETH) {
-		for (i = 0; i != hash_rxq_init_n; ++i) {
-			if (!parser->queue[i].ibv_attr)
-				continue;
-			if (parser->queue[i].ibv_attr->num_of_specs != 1)
-				break;
-			parser->queue[i].ibv_attr->type =
-						IBV_FLOW_ATTR_MC_DEFAULT;
-		}
-	}
 exit_free:
 	/* Only verification is expected, all resources should be released. */
 	if (!parser->create) {
@@ -1246,7 +1234,6 @@ mlx5_flow_create_eth(const struct rte_flow_item *item,
 		eth.val.ether_type &= eth.mask.ether_type;
 	}
 	mlx5_flow_create_copy(parser, &eth, eth_size);
-	parser->allmulti = eth.val.dst_mac[0] & 1;
 	return 0;
 }
 
-- 
2.12.0