[dpdk-dev] [PATCH] net/mlx5: fix port domain_id initialization

[dpdk-dev] [PATCH] net/mlx5: fix port domain_id initialization

[Gregory Etelson]

All active ports that belong to the same E-switch share domain_id
value.
Port initialization procedure searches through a database for existing
port with matching properties. New domain_id allocated if match was
not located. Otherwise, new port inherits existing domain_id.

Port initialization did not pass enough info to search procedure to
find existing matches. Therefore, each port was created with a private
domain_id value. As the result, port_id flow action failed because it
could not match ports in a rule to E-switch.

The patch adds dpdk_dev with port properties to device search.

Fixes: 56bb3c84e982 ("net/mlx5: reduce PCI dependency")

Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_os.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 8f98cf1716..c15a44de86 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -1181,6 +1181,13 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 	priv->vport_meta_tag = 0;
 	priv->vport_meta_mask = 0;
 	priv->pf_bond = spawn->pf_bond;
+
+	DRV_LOG(DEBUG,
+		"dev_port=%u bus=%s pci=%s master=%d representor=%d pf_bond=%d\n",
+		priv->dev_port, dpdk_dev->bus->name,
+		priv->pci_dev ? priv->pci_dev->name : "NONE",
+		priv->master, priv->representor, priv->pf_bond);
+
 	/*
 	 * If we have E-Switch we should determine the vport attributes.
 	 * E-Switch may use either source vport field or reg_c[0] metadata
@@ -1253,7 +1260,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 	 * Look for sibling devices in order to reuse their switch domain
 	 * if any, otherwise allocate one.
 	 */
-	MLX5_ETH_FOREACH_DEV(port_id, NULL) {
+	MLX5_ETH_FOREACH_DEV(port_id, dpdk_dev) {
 		const struct mlx5_priv *opriv =
 			rte_eth_devices[port_id].data->dev_private;
 
@@ -1263,6 +1270,8 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 			RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
 			continue;
 		priv->domain_id = opriv->domain_id;
+		DRV_LOG(DEBUG, "dev_port-%u inherit domain_id=%u\n",
+			priv->dev_port, priv->domain_id);
 		break;
 	}
 	if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
@@ -1274,6 +1283,8 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 			goto error;
 		}
 		own_domain_id = 1;
+		DRV_LOG(DEBUG, "dev_port-%u new domain_id=%u\n",
+			priv->dev_port, priv->domain_id);
 	}
 	/* Override some values set by hardware configuration. */
 	mlx5_args(config, dpdk_dev->devargs);
-- 
2.32.0

Re: [dpdk-dev] [PATCH] net/mlx5: fix port domain_id initialization

[Thomas Monjalon]

Title proposal:
net/mlx5: fix port initialization of switch domain

02/08/2021 16:55, Gregory Etelson:
> All active ports that belong to the same E-switch share domain_id
> value.
> Port initialization procedure searches through a database for existing
> port with matching properties. New domain_id allocated if match was
> not located. Otherwise, new port inherits existing domain_id.
> 
> Port initialization did not pass enough info to search procedure to
> find existing matches. Therefore, each port was created with a private
> domain_id value. As the result, port_id flow action failed because it
> could not match ports in a rule to E-switch.
> 
> The patch adds dpdk_dev with port properties to device search.
> 
> Fixes: 56bb3c84e982 ("net/mlx5: reduce PCI dependency")
> 
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

Applied, thanks.