From a2c7023f7075ca9b80f944d3f20f60e6574538e2 Mon Sep 17 00:00:00 2001 From: Xiaofei Shen Date: Fri, 29 Mar 2019 11:04:58 +0530 Subject: [PATCH] net: dsa: read mac address from DT for slave device Before creating a slave netdevice, get the mac address from DTS and apply in case it is valid. Signed-off-by: Xiaofei Shen Signed-off-by: Vinod Koul Signed-off-by: David S. Miller --- include/net/dsa.h | 1 + net/dsa/dsa2.c | 1 + net/dsa/slave.c | 5 ++++- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/include/net/dsa.h b/include/net/dsa.h index ae480bba11f58e..0cfc2f828b87d9 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -140,6 +140,7 @@ struct dsa_port { unsigned int index; const char *name; const struct dsa_port *cpu_dp; + const char *mac; struct device_node *dn; unsigned int ageing_time; u8 stp_state; diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index fe0a6197db9c5f..0e1cce460406ee 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -266,6 +266,7 @@ static int dsa_port_setup(struct dsa_port *dp) return 0; memset(&dp->devlink_port, 0, sizeof(dp->devlink_port)); + dp->mac = of_get_mac_address(dp->dn); switch (dp->type) { case DSA_PORT_TYPE_CPU: diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 80be8e86c82df5..f83525909c57a7 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -1393,7 +1393,10 @@ int dsa_slave_create(struct dsa_port *port) NETIF_F_HW_VLAN_CTAG_FILTER; slave_dev->hw_features |= NETIF_F_HW_TC; slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; - eth_hw_addr_inherit(slave_dev, master); + if (port->mac && is_valid_ether_addr(port->mac)) + ether_addr_copy(slave_dev->dev_addr, port->mac); + else + eth_hw_addr_inherit(slave_dev, master); slave_dev->priv_flags |= IFF_NO_QUEUE; slave_dev->netdev_ops = &dsa_slave_netdev_ops; slave_dev->min_mtu = 0;