[dpdk-dev] [PATCH 11/12] net/mlx5: update switch port ID in bonding configuration

[Viacheslav Ovsiienko <viacheslavo@mellanox.com>]

With bonding configuration multiple PFs may represent the
single switching device with multiple ports as representors.
To distinguish representors belonging to different PFs we
should generated unique port ID. It is proposed to use
the PF index in bonding configuration to generate this
unique port IDs.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
 drivers/net/mlx5/mlx5.c        |  1 +
 drivers/net/mlx5/mlx5.h        |  1 +
 drivers/net/mlx5/mlx5_defs.h   |  4 ++++
 drivers/net/mlx5/mlx5_ethdev.c | 19 +++++++++++++++++++
 4 files changed, 25 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index e93f069..71b30d9 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -1789,6 +1789,7 @@ struct mlx5_dev_spawn_data {
 	priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
 	priv->vport_meta_tag = 0;
 	priv->vport_meta_mask = 0;
+	priv->pf_bond = spawn->pf_bond;
 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
 	/*
 	 * The DevX port query API is implemented. E-Switch may use
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 60bd204..d4d2ca8 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -623,6 +623,7 @@ struct mlx5_priv {
 	uint32_t vport_meta_tag; /* Used for vport index match ove VF LAG. */
 	uint32_t vport_meta_mask; /* Used for vport index field match mask. */
 	int32_t representor_id; /* Port representor identifier. */
+	int32_t pf_bond; /* >=0 means PF index in bonding configuration. */
 	unsigned int if_index; /* Associated kernel network device index. */
 	/* RX/TX queues. */
 	unsigned int rxqs_n; /* RX queues array size. */
diff --git a/drivers/net/mlx5/mlx5_defs.h b/drivers/net/mlx5/mlx5_defs.h
index d7440fd..180122d 100644
--- a/drivers/net/mlx5/mlx5_defs.h
+++ b/drivers/net/mlx5/mlx5_defs.h
@@ -58,6 +58,10 @@
 #define MLX5_PMD_SOFT_COUNTERS 1
 #endif
 
+/* Switch port ID parameters for bonding configurations. */
+#define MLX5_PORT_ID_BONDING_PF_MASK 0xf
+#define MLX5_PORT_ID_BONDING_PF_SHIFT 0xf
+
 /* Alarm timeout. */
 #define MLX5_ALARM_TIMEOUT_US 100000
 
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 751247d..aa645d0 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -582,6 +582,25 @@ struct ethtool_link_settings {
 	if (priv->representor) {
 		uint16_t port_id;
 
+		if (priv->pf_bond >= 0) {
+			/*
+			 * Switch port ID is opaque value with driver defined
+			 * format. Push the PF index in bonding configurations
+			 * in upper four bits of port ID. If we get too many
+			 * representors (more than 4K) or PFs (more than 15)
+			 * this approach must be reconsidered.
+			 */
+			if ((info->switch_info.port_id >>
+				MLX5_PORT_ID_BONDING_PF_SHIFT) ||
+			    priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) {
+				DRV_LOG(ERR, "can't update switch port ID"
+					     " for bonding device");
+				assert(false);
+				return -ENODEV;
+			}
+			info->switch_info.port_id |=
+				priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT;
+		}
 		MLX5_ETH_FOREACH_DEV(port_id) {
 			struct mlx5_priv *opriv =
 				rte_eth_devices[port_id].data->dev_private;
-- 
1.8.3.1