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[3/8] net/mlx5: improve Verbs flow priority discover for scalable

Message ID 20210927083256.337450-4-xuemingl@nvidia.com (mailing list archive)
State Superseded, archived
Delegated to: Raslan Darawsheh
Headers show
Series net/mlx5: support more than 255 representors | expand


Context Check Description
ci/checkpatch success coding style OK

Commit Message

Xueming(Steven) Li Sept. 27, 2021, 8:32 a.m. UTC
To detect number flow Verbs flow priorities, PMD try to create Verbs
flows in different priority. While Verbs is not designed to support
ports larger than 255.

When DevX supported by kernel driver, 16 Verbs priorities must be
supported, no need to create Verbs flows.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
 drivers/net/mlx5/mlx5_flow_verbs.c | 8 ++++++++
 1 file changed, 8 insertions(+)
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diff --git a/drivers/net/mlx5/mlx5_flow_verbs.c b/drivers/net/mlx5/mlx5_flow_verbs.c
index b93fd4d2c96..93bffa4a0b9 100644
--- a/drivers/net/mlx5/mlx5_flow_verbs.c
+++ b/drivers/net/mlx5/mlx5_flow_verbs.c
@@ -83,6 +83,11 @@  mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 	int i;
 	int priority = 0;
+	/* If DevX supported, driver must support 16 verbs flow priorities. */
+	priority = RTE_DIM(priority_map_5);
+	goto out;
 	if (!drop->qp) {
 		rte_errno = ENOTSUP;
 		return -rte_errno;
@@ -109,6 +114,9 @@  mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 			dev->data->port_id, priority);
 		return -rte_errno;
 	DRV_LOG(INFO, "port %u supported flow priorities:"
 		" 0-%d for ingress or egress root table,"
 		" 0-%d for non-root table or transfer root table.",