From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vlad Dogaru Subject: [PATCH] net: add sysfs entry for device group Date: Mon, 24 Jan 2011 15:37:29 +0200 Message-ID: <1295876249-15634-1-git-send-email-ddvlad@rosedu.org> Cc: Vlad Dogaru , Stephen Hemminger To: netdev@vger.kernel.org Return-path: Received: from [141.85.37.41] ([141.85.37.41]:50270 "EHLO swarm.cs.pub.ro" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752022Ab1AXNhl (ORCPT ); Mon, 24 Jan 2011 08:37:41 -0500 Sender: netdev-owner@vger.kernel.org List-ID: 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 --- 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 e23c01b..b726131 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), {} }; -- 1.7.1