netdev - [PATCHv7 4/5] Ifgroup read/write support in sysfs

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Message-Id: <11963527103391-git-send-email-panther@balabit.hu>
Date:	Thu, 29 Nov 2007 17:11:45 +0100
From:	Laszlo Attila Toth <panther@...abit.hu>
To:	David Miller <davem@...emloft.net>
Cc:	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org,
	Laszlo Attila Toth <panther@...abit.hu>
Subject: [PATCHv7 4/5] Ifgroup read/write support in sysfs

The ifgroup member of each net device can be read and changed in sysfs.

Author: Lutz Jaenicke <ljaenicke@...ominate.com>
---

 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 61ead1d..5bd6d35 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -219,6 +219,20 @@ static ssize_t store_tx_queue_len(struct device *dev,
 	return netdev_store(dev, attr, buf, len, change_tx_queue_len);
 }
 
+NETDEVICE_SHOW(ifgroup, fmt_hex);
+
+static int change_ifgroup(struct net_device *net, unsigned long new_ifgroup)
+{
+	net->ifgroup = new_ifgroup;
+	return 0;
+}
+
+static ssize_t store_ifgroup(struct device *dev, struct device_attribute *attr,
+			   const char *buf, size_t len)
+{
+	return netdev_store(dev, attr, buf, len, change_ifgroup);
+}
+
 static struct device_attribute net_class_attributes[] = {
 	__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
 	__ATTR(iflink, S_IRUGO, show_iflink, NULL),
@@ -235,6 +249,7 @@ 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(ifgroup, S_IRUGO | S_IWUSR, show_ifgroup, store_ifgroup),
 	{}
 };
 
-
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