net/sfc: avoid unnecessary actions on dummy default MAC set

Just an optimization to avoid extra reconfiguration when it
is not actually required.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 6b3c49a..acee3e4 100644 (file)
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1030,6 +1030,9 @@ sfc_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
 
        sfc_adapter_lock(sa);
 
+       if (rte_is_same_ether_addr(mac_addr, &port->default_mac_addr))
+               goto unlock;
+
        /*
         * Copy the address to the device private data so that
         * it could be recalled in the case of adapter restart.