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| author | Vlad Dogaru <ddvlad@rosedu.org> | 2011-01-24 04:37:29 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-25 08:23:28 +0100 |
| commit | a512b92b3af4b03fc6834617a042dc85fbd4e34e (patch) | |
| tree | 54bdb2b03bca25b5aa35ead52c5122707f0b9727 /net/core | |
| parent | veth: remove unneeded ifname code from veth_newlink() (diff) | |
| download | linux-a512b92b3af4b03fc6834617a042dc85fbd4e34e.tar.xz linux-a512b92b3af4b03fc6834617a042dc85fbd4e34e.zip | |
net: add sysfs entry for device group
The group of a network device can be queried or changed from userspace
using sysfs.
For example, considering sysfs mounted in /sys, one can change the group
that interface lo belongs to:
echo 1 > /sys/class/net/lo/group
Signed-off-by: Vlad Dogaru <ddvlad@rosedu.org>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/net-sysfs.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 81367ccf3306..2e4a393dfc3b 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -295,6 +295,20 @@ static ssize_t show_ifalias(struct device *dev, return ret; } +NETDEVICE_SHOW(group, fmt_dec); + +static int change_group(struct net_device *net, unsigned long new_group) +{ + dev_set_group(net, (int) new_group); + return 0; +} + +static ssize_t store_group(struct device *dev, struct device_attribute *attr, + const char *buf, size_t len) +{ + return netdev_store(dev, attr, buf, len, change_group); +} + static struct device_attribute net_class_attributes[] = { __ATTR(addr_assign_type, S_IRUGO, show_addr_assign_type, NULL), __ATTR(addr_len, S_IRUGO, show_addr_len, NULL), @@ -316,6 +330,7 @@ static struct device_attribute net_class_attributes[] = { __ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags), __ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len, store_tx_queue_len), + __ATTR(group, S_IRUGO | S_IWUSR, show_group, store_group), {} }; |