diff mbox series

net/mlx5: fix the port match in sample flow

Message ID 20220307021042.4088-1-jiaweiw@nvidia.com (mailing list archive)
State Accepted, archived
Delegated to: Raslan Darawsheh
Headers
Series net/mlx5: fix the port match in sample flow |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK
ci/intel-Testing success Testing PASS
ci/github-robot: build success github build: passed
ci/iol-broadcom-Functional fail Functional Testing issues
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-aarch64-unit-testing success Testing PASS
ci/iol-x86_64-compile-testing success Testing PASS
ci/iol-aarch64-compile-testing success Testing PASS
ci/iol-x86_64-unit-testing success Testing PASS
ci/iol-abi-testing success Testing PASS

Commit Message

Jiawei Wang March 7, 2022, 2:10 a.m. UTC 
  If there are an explicit port match and sample action in the same flow,
mlx5 PMD pushes the explicit port match in the prefix subflow, and
uses the tag item match in the suffix subflow.

The explicit port match was translated into source vport match so
the sample suffix subflow lost this match after flow split.

This patch copies the explicit port match to the sample suffix subflow,
and the latter gets the correct source vport value in the flow matcher.

Fixes: b4c0ddbfcc58 ("net/mlx5: split sample flow into two sub-flows")
Cc: stable@dpdk.org

Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

Comments

Slava Ovsiienko March 9, 2022, 7:43 p.m. UTC | #1 
> -----Original Message-----
> From: Jiawei(Jonny) Wang <jiaweiw@nvidia.com>
> Sent: Monday, March 7, 2022 4:11
> To: Slava Ovsiienko <viacheslavo@nvidia.com>; Matan Azrad
> <matan@nvidia.com>; Ori Kam <orika@nvidia.com>
> Cc: dev@dpdk.org; Raslan Darawsheh <rasland@nvidia.com>;
> stable@dpdk.org
> Subject: [PATCH] net/mlx5: fix the port match in sample flow
> 
> If there are an explicit port match and sample action in the same flow,
> mlx5 PMD pushes the explicit port match in the prefix subflow, and uses the
> tag item match in the suffix subflow.
> 
> The explicit port match was translated into source vport match so the sample
> suffix subflow lost this match after flow split.
> 
> This patch copies the explicit port match to the sample suffix subflow, and
> the latter gets the correct source vport value in the flow matcher.
> 
> Fixes: b4c0ddbfcc58 ("net/mlx5: split sample flow into two sub-flows")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Raslan Darawsheh March 10, 2022, 3:37 p.m. UTC | #2 
Hi,

> -----Original Message-----
> From: Jiawei(Jonny) Wang <jiaweiw@nvidia.com>
> Sent: Monday, March 7, 2022 4:11 AM
> To: Slava Ovsiienko <viacheslavo@nvidia.com>; Matan Azrad
> <matan@nvidia.com>; Ori Kam <orika@nvidia.com>
> Cc: dev@dpdk.org; Raslan Darawsheh <rasland@nvidia.com>;
> stable@dpdk.org
> Subject: [PATCH] net/mlx5: fix the port match in sample flow
> 
> If there are an explicit port match and sample action in the same flow,
> mlx5 PMD pushes the explicit port match in the prefix subflow, and uses the
> tag item match in the suffix subflow.
> 
> The explicit port match was translated into source vport match so the sample
> suffix subflow lost this match after flow split.
> 
> This patch copies the explicit port match to the sample suffix subflow, and
> the latter gets the correct source vport value in the flow matcher.
> 
> Fixes: b4c0ddbfcc58 ("net/mlx5: split sample flow into two sub-flows")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh
diff mbox series

Patch

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 179cc3b303..34b8f97a14 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -5543,7 +5543,7 @@  flow_check_match_action(const struct rte_flow_action actions[],
 	return flag ? actions_n + 1 : 0;
 }
 
-#define SAMPLE_SUFFIX_ITEM 2
+#define SAMPLE_SUFFIX_ITEM 3
 
 /**
  * Split the sample flow.
@@ -5584,6 +5584,7 @@  flow_check_match_action(const struct rte_flow_action actions[],
 static int
 flow_sample_split_prep(struct rte_eth_dev *dev,
 		       int add_tag,
+		       const struct rte_flow_item items[],
 		       struct rte_flow_item sfx_items[],
 		       const struct rte_flow_action actions[],
 		       struct rte_flow_action actions_sfx[],
@@ -5650,6 +5651,12 @@  flow_sample_split_prep(struct rte_eth_dev *dev,
 			.data = tag_id,
 		};
 		/* Prepare the suffix subflow items. */
+		for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
+			if (items->type == RTE_FLOW_ITEM_TYPE_PORT_ID) {
+				memcpy(sfx_items, items, sizeof(*sfx_items));
+				sfx_items++;
+			}
+		}
 		tag_spec = (void *)(sfx_items + SAMPLE_SUFFIX_ITEM);
 		tag_spec->data = tag_id;
 		tag_spec->id = set_tag->id;
@@ -6257,7 +6264,7 @@  flow_create_split_sample(struct rte_eth_dev *dev,
 			jump_table = attr->group * MLX5_FLOW_TABLE_FACTOR +
 				     next_ft_step;
 		pre_actions = sfx_actions + actions_n;
-		tag_id = flow_sample_split_prep(dev, add_tag, sfx_items,
+		tag_id = flow_sample_split_prep(dev, add_tag, items, sfx_items,
 						actions, sfx_actions,
 						pre_actions, actions_n,
 						sample_action_pos,