hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[NET]: Avoid duplicate netlink notification when changing link state 

When changing the link state from userspace not affecting any other
flags. Two duplicate notification are being sent, once as action
in the NETDEV_UP/NETDEV_DOWN notification chain and a second time
when comparing old and new device flags after the change has been
completed. Although harmless, the duplicates should be avoided.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2007-06-05 16:03:03 -07:00 committed by David S. Miller
parent df2bc459a3
commit 7c355f532d
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
net/core/dev.c
View File

@ -2577,7 +2577,7 @@ unsigned dev_get_flags(const struct net_device *dev)
int dev_change_flags(struct net_device *dev, unsigned flags)
{
int ret;
int ret, changes;
int old_flags = dev->flags;
/*
@ -2632,8 +2632,10 @@ int dev_change_flags(struct net_device *dev, unsigned flags)
dev_set_allmulti(dev, inc);
}
if (old_flags ^ dev->flags)
rtmsg_ifinfo(RTM_NEWLINK, dev, old_flags ^ dev->flags);
/* Exclude state transition flags, already notified */
changes = (old_flags ^ dev->flags) & ~(IFF_UP | IFF_RUNNING);
if (changes)
rtmsg_ifinfo(RTM_NEWLINK, dev, changes);
return ret;
}