[dpdk-dev] [PATCH v5 7/9] net/mlx5: fix setting VF default MAC through representor

[Xueming Li]

With kernel bonding, there was an error when setting VF MAC address
through representor. The Netlink api requires ifindex of owner PF, not
bonding device ifindex.

Uses owner PF ifindex to modify VF default MAC in case of bonding
device.

Fixes: c21e5facf7d2 ("net/mlx5: use bond index for netdev operations")

Signed-off-by: Xueming Li <xuemingl at nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
---
 drivers/net/mlx5/mlx5_mac.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_mac.c b/drivers/net/mlx5/mlx5_mac.c
index 7b2be04889..a7946f7756 100644
--- a/drivers/net/mlx5/mlx5_mac.c
+++ b/drivers/net/mlx5/mlx5_mac.c
@@ -154,6 +154,7 @@ mlx5_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
 {
 	uint16_t port_id;
 	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_priv *pf_priv;
 
 	/*
 	 * Configuring the VF instead of its representor,
@@ -162,17 +163,21 @@ mlx5_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
 	if (priv->representor && !mlx5_is_hpf(dev)) {
 		DRV_LOG(DEBUG, "VF represented by port %u setting primary MAC address",
 			dev->data->port_id);
+		if (priv->pf_bond >= 0) {
+			/* Bonding, get owner PF ifindex from shared data. */
+			return mlx5_os_vf_mac_addr_modify
+			       (priv,
+				priv->sh->bond.ports[priv->pf_bond].ifindex,
+				mac_addr,
+				MLX5_REPRESENTOR_REPR(priv->representor_id));
+		}
 		RTE_ETH_FOREACH_DEV_SIBLING(port_id, dev->data->port_id) {
-			priv = rte_eth_devices[port_id].data->dev_private;
-			if (priv->master == 1) {
-				priv = dev->data->dev_private;
+			pf_priv = rte_eth_devices[port_id].data->dev_private;
+			if (pf_priv->master == 1)
 				return mlx5_os_vf_mac_addr_modify
-				       (priv,
-					mlx5_ifindex(&rte_eth_devices[port_id]),
-					mac_addr,
+				       (priv, pf_priv->if_index, mac_addr,
 					MLX5_REPRESENTOR_REPR
 						(priv->representor_id));
-			}
 		}
 		rte_errno = -ENOTSUP;
 		return rte_errno;
-- 
2.25.1