diff options
| author | WANG Cong <xiyou.wangcong@gmail.com> | 2015-03-24 11:53:31 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-24 15:00:01 -0400 |
| commit | 66400d543072d6ff6f8df036e3f12f5c154c19cc (patch) | |
| tree | 064dfdb1dcab5dc651bbaba6fc06978c86bc8c63 /net/core | |
| parent | 27ed44a5d6d88897002b75f53004d4c565a5aab6 (diff) | |
net: allow to delete a whole device group
With dev group, we can change a batch of net devices,
so we should allow to delete them together too.
Group 0 is not allowed to be deleted since it is
the default group.
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/rtnetlink.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index e7695104dbf0..b96ac2109c82 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1836,6 +1836,42 @@ errout: return err; } +static int rtnl_group_dellink(const struct net *net, int group) +{ + struct net_device *dev, *aux; + LIST_HEAD(list_kill); + bool found = false; + + if (!group) + return -EPERM; + + for_each_netdev(net, dev) { + if (dev->group == group) { + const struct rtnl_link_ops *ops; + + found = true; + ops = dev->rtnl_link_ops; + if (!ops || !ops->dellink) + return -EOPNOTSUPP; + } + } + + if (!found) + return -ENODEV; + + for_each_netdev_safe(net, dev, aux) { + if (dev->group == group) { + const struct rtnl_link_ops *ops; + + ops = dev->rtnl_link_ops; + ops->dellink(dev, &list_kill); + } + } + unregister_netdevice_many(&list_kill); + + return 0; +} + static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); @@ -1859,6 +1895,8 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) dev = __dev_get_by_index(net, ifm->ifi_index); else if (tb[IFLA_IFNAME]) dev = __dev_get_by_name(net, ifname); + else if (tb[IFLA_GROUP]) + return rtnl_group_dellink(net, nla_get_u32(tb[IFLA_GROUP])); else return -EINVAL; |