[RFC PATCH net-next] net: rename group sysfs entry to netdev_group

[Xiaotian feng <dfeng@redhat.com>]

From: Xiaotian Feng <dfeng@redhat.com>

commit a512b92 adds sysfs entry for net device group, but
before this commit, tun also uses group sysfs, so after this
commit checkin, kernel warns like this:
    sysfs: cannot create duplicate filename '/devices/virtual/net/vnet0/group'

Since tun has used this for years, rename sysfs under tun might
break existing userspace, so rename group sysfs entry for net device
group is a better choice.

Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Tom Herbert <therbert@google.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Vlad Dogaru <ddvlad@rosedu.org>
---
 net/core/net-sysfs.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 2e4a393..eb4b5e0 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -295,7 +295,7 @@ static ssize_t show_ifalias(struct device *dev,
 	return ret;
 }
 
-NETDEVICE_SHOW(group, fmt_dec);
+NETDEVICE_SHOW(netdev_group, fmt_dec);
 
 static int change_group(struct net_device *net, unsigned long new_group)
 {
@@ -330,7 +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),
+	__ATTR(netdev_group, S_IRUGO | S_IWUSR, show_group, store_group),
 	{}
 };
 
-- 
1.7.1