diff options
Diffstat (limited to 'net/dsa/master.c')
| -rw-r--r-- | net/dsa/master.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/net/dsa/master.c b/net/dsa/master.c index d7d5145aa235..71bb15f491c8 100644 --- a/net/dsa/master.c +++ b/net/dsa/master.c @@ -158,6 +158,27 @@ static void dsa_master_ethtool_teardown(struct net_device *dev) cpu_dp->orig_ethtool_ops = NULL; } +static ssize_t tagging_show(struct device *d, struct device_attribute *attr, + char *buf) +{ + struct net_device *dev = to_net_dev(d); + struct dsa_port *cpu_dp = dev->dsa_ptr; + + return sprintf(buf, "%s\n", + dsa_tag_protocol_to_str(cpu_dp->tag_ops)); +} +static DEVICE_ATTR_RO(tagging); + +static struct attribute *dsa_slave_attrs[] = { + &dev_attr_tagging.attr, + NULL +}; + +static const struct attribute_group dsa_group = { + .name = "dsa", + .attrs = dsa_slave_attrs, +}; + static void dsa_master_set_mtu(struct net_device *dev, struct dsa_port *cpu_dp) { unsigned int mtu = ETH_DATA_LEN + cpu_dp->tag_ops->overhead; @@ -186,6 +207,8 @@ static void dsa_master_reset_mtu(struct net_device *dev) int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp) { + int ret; + dsa_master_set_mtu(dev, cpu_dp); /* If we use a tagging format that doesn't have an ethertype @@ -196,11 +219,20 @@ int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp) dev->dsa_ptr = cpu_dp; - return dsa_master_ethtool_setup(dev); + ret = dsa_master_ethtool_setup(dev); + if (ret) + return ret; + + ret = sysfs_create_group(&dev->dev.kobj, &dsa_group); + if (ret) + dsa_master_ethtool_teardown(dev); + + return ret; } void dsa_master_teardown(struct net_device *dev) { + sysfs_remove_group(&dev->dev.kobj, &dsa_group); dsa_master_ethtool_teardown(dev); dsa_master_reset_mtu(dev); |