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SubjectRe: [PATCH v1] net-sysfs: expose permanent hardware address in sysfs
Le 05/05/2014 20:34, David Decotigny a écrit :
> Tested:
> grep . /sys/class/net/*/*addr*

Please also include the relevant sysfs documentation changes in
Documentation/ABI/testing/sysfs-class-net.

Thanks!

>
> Signed-off-by: David Decotigny <decot@googlers.com>
> ---
> net/core/net-sysfs.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
> index 1cac29e..bf57024 100644
> --- a/net/core/net-sysfs.c
> +++ b/net/core/net-sysfs.c
> @@ -127,6 +127,20 @@ static ssize_t address_show(struct device *dev, struct device_attribute *attr,
> }
> static DEVICE_ATTR_RO(address);
>
> +static ssize_t perm_addr_show(struct device *dev, struct device_attribute *attr,
> + char *buf)
> +{
> + struct net_device *net = to_net_dev(dev);
> + ssize_t ret = -EINVAL;
> +
> + read_lock(&dev_base_lock);
> + if (dev_isalive(net))
> + ret = sysfs_format_mac(buf, net->perm_addr, net->addr_len);
> + read_unlock(&dev_base_lock);
> + return ret;
> +}
> +static DEVICE_ATTR_RO(perm_addr);
> +
> static ssize_t broadcast_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> @@ -391,6 +405,7 @@ static struct attribute *net_class_attrs[] = {
> &dev_attr_addr_len.attr,
> &dev_attr_link_mode.attr,
> &dev_attr_address.attr,
> + &dev_attr_perm_addr.attr,
> &dev_attr_broadcast.attr,
> &dev_attr_speed.attr,
> &dev_attr_duplex.attr,
>
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