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rtnl/do_setlink(): set modified when IFLA_LINKMODE is updated

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The only effect of this patch is to print a warning if IFLA_LINKMODE is updated
and a following change fails.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2014-09-01 16:07:27 +02:00 committed by David S. Miller
parent 5d1180fcac
commit 1889b0e7ef
1 changed files with 5 additions and 1 deletions
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6
net/core/rtnetlink.c
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@ -1624,8 +1624,12 @@ static int do_setlink(const struct sk_buff *skb,
set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
if (tb[IFLA_LINKMODE]) {
unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]);
write_lock_bh(&dev_base_lock);
dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
if (dev->link_mode ^ value)
modified = 1;
dev->link_mode = value;
write_unlock_bh(&dev_base_lock);
}