Messages in this thread Patch in this message | | | From | David Decotigny <> | Subject | [PATCH v1] net-sysfs: expose permanent hardware address in sysfs | Date | Mon, 5 May 2014 20:34:00 -0700 |
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Tested: grep . /sys/class/net/*/*addr*
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, -- 1.9.1.423.g4596e3a
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