diff options
| -rw-r--r-- | net/core/rtnetlink.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 8c971a2efe2..1a6c5b9d41b 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -689,8 +689,15 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) } - if (ifm->ifi_flags) - dev_change_flags(dev, ifm->ifi_flags); + if (ifm->ifi_flags || ifm->ifi_change) { + unsigned int flags = ifm->ifi_flags; + + /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ + if (ifm->ifi_change) + flags = (flags & ifm->ifi_change) | + (dev->flags & ~ifm->ifi_change); + dev_change_flags(dev, flags); + } if (tb[IFLA_TXQLEN]) dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); |