net: export physical port id via sysfs
Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Narendra K <narendra_k@dell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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66cae9ed6b
Коммит
ff80e519ab
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@ -334,6 +334,27 @@ static ssize_t store_group(struct device *dev, struct device_attribute *attr,
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return netdev_store(dev, attr, buf, len, change_group);
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}
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static ssize_t show_phys_port_id(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct net_device *netdev = to_net_dev(dev);
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ssize_t ret = -EINVAL;
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if (!rtnl_trylock())
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return restart_syscall();
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if (dev_isalive(netdev)) {
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struct netdev_phys_port_id ppid;
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ret = dev_get_phys_port_id(netdev, &ppid);
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if (!ret)
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ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id);
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}
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rtnl_unlock();
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return ret;
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}
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static struct device_attribute net_class_attributes[] = {
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__ATTR(addr_assign_type, S_IRUGO, show_addr_assign_type, NULL),
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__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
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@ -355,6 +376,7 @@ static struct device_attribute net_class_attributes[] = {
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__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,
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store_tx_queue_len),
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__ATTR(netdev_group, S_IRUGO | S_IWUSR, show_group, store_group),
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__ATTR(phys_port_id, S_IRUGO, show_phys_port_id, NULL),
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{}
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};
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