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authorDavid Woodhouse <dwmw2@infradead.org>2008-04-20 16:07:43 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-20 16:07:43 -0700
commit9d29672c64505f2d7f707701b829715705308a69 (patch)
tree8a62c799b03820930b756c0d867b480386cb2d2f
parentf7d0e5a506396419eb731b6c6cd97ed23c9245c7 (diff)
[NET]: Expose netdevice dev_id through sysfs
Expose dev_id to userspace, because it helps to disambiguate between interfaces where the MAC address is unique. This should allow us to simplify the handling of persistent naming for S390 network devices in udev -- because it can depend on a simple attribute of the device like the other match criteria, rather than having a special case for SUBSYSTEMS=="ccwgroup". Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/net-sysfs.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 7635d3f7272..4e7b847347f 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -87,6 +87,7 @@ static ssize_t netdev_store(struct device *dev, struct device_attribute *attr,
return ret;
}
+NETDEVICE_SHOW(dev_id, fmt_hex);
NETDEVICE_SHOW(addr_len, fmt_dec);
NETDEVICE_SHOW(iflink, fmt_dec);
NETDEVICE_SHOW(ifindex, fmt_dec);
@@ -210,6 +211,7 @@ static ssize_t store_tx_queue_len(struct device *dev,
static struct device_attribute net_class_attributes[] = {
__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
+ __ATTR(dev_id, S_IRUGO, show_dev_id, NULL),
__ATTR(iflink, S_IRUGO, show_iflink, NULL),
__ATTR(ifindex, S_IRUGO, show_ifindex, NULL),
__ATTR(features, S_IRUGO, show_features, NULL),