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net: dsa: read mac address from DT for slave device

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commit a2c7023f7075ca9b80f944d3f20f60e6574538e2 upstream.

Before creating a slave netdevice, get the mac address from DTS and
apply in case it is valid.

Signed-off-by: Xiaofei Shen <xiaofeis@codeaurora.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Pali Rohár <pali@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xiaofei Shen 2019-03-29 11:04:58 +05:30 committed by Greg Kroah-Hartman
parent 3ab5872df9
commit 8069a08d35
3 changed files with 6 additions and 1 deletions
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1
include/net/dsa.h
View File

@ -196,6 +196,7 @@ 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;

1
net/dsa/dsa2.c
View File

@ -261,6 +261,7 @@ static int dsa_port_setup(struct dsa_port *dp)
int err = 0;
memset(&dp->devlink_port, 0, sizeof(dp->devlink_port));
dp->mac = of_get_mac_address(dp->dn);
if (dp->type != DSA_PORT_TYPE_UNUSED)
err = devlink_port_register(ds->devlink, &dp->devlink_port,

5
net/dsa/slave.c
View File

@ -1313,7 +1313,10 @@ int dsa_slave_create(struct dsa_port *port)
slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
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->switchdev_ops = &dsa_slave_switchdev_ops;