[dpdk-stable] [PATCH v2] net/mlx5: fix VF MAC address set over Bluefield

[Raslan Darawsheh]

When trying to set MAC address of an ethethet device and if it was
a representor, PMD sets the MAC over the corresponding VF instead.

For the case of HPF (Host PF representor on BluueField), PMD shouldn't
attempt to set it, since it doesn't have any corresponding VF and fails.

This will fix the issue by setting the MAC on the dev directly.

Fixes: 0d1d73170820 ("net/mlx5: set VF MAC address from host")
Cc: stable at dpdk.org

Signed-off-by: Raslan Darawsheh <rasland at mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
---
v2: fix the use of representor bit to use the representor id instead
---
 drivers/net/mlx5/mlx5_mac.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_mac.c b/drivers/net/mlx5/mlx5_mac.c
index 2d808d629..88c52b29f 100644
--- a/drivers/net/mlx5/mlx5_mac.c
+++ b/drivers/net/mlx5/mlx5_mac.c
@@ -157,8 +157,11 @@ 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;
 
-	/* Configuring the VF instead of its representor. */
-	if (priv->representor) {
+	/*
+	 * Configuring the VF instead of its representor,
+	 * need to skip the special case of HPF on Bluefield.
+	 */
+	if (priv->representor && priv->representor_id >= 0) {
 		DRV_LOG(DEBUG, "VF represented by port %u setting primary MAC address",
 			dev->data->port_id);
 		RTE_ETH_FOREACH_DEV_SIBLING(port_id, dev->data->port_id) {
-- 
2.27.0