diff options
| author | Vlad Dogaru <ddvlad@rosedu.org> | 2011-01-13 23:38:31 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-19 23:31:10 -0800 |
| commit | e7ed828f10bd89a28f821ae7f20e691704d61923 (patch) | |
| tree | e1e19b5e6d7c2f5291a7ea6a09ff34cf631a3c67 /net/core/rtnetlink.c | |
| parent | cbda10fa97d72c7a1923be4426171aa90e8c6dab (diff) | |
netlink: support setting devgroup parameters
If a rtnetlink request specifies a negative or zero ifindex and has no
interface name attribute, but has a group attribute, then the chenges
are made to all the interfaces belonging to the specified group.
Signed-off-by: Vlad Dogaru <ddvlad@rosedu.org>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/rtnetlink.c')
| -rw-r--r-- | net/core/rtnetlink.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 09062b07bf7..a0b2eeb3b61 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1558,6 +1558,24 @@ err: } EXPORT_SYMBOL(rtnl_create_link); +static int rtnl_group_changelink(struct net *net, int group, + struct ifinfomsg *ifm, + struct nlattr **tb) +{ + struct net_device *dev; + int err; + + for_each_netdev(net, dev) { + if (dev->group == group) { + err = do_setlink(dev, ifm, tb, NULL, 0); + if (err < 0) + return err; + } + } + + return 0; +} + static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { struct net *net = sock_net(skb->sk); @@ -1585,10 +1603,16 @@ replay: ifm = nlmsg_data(nlh); if (ifm->ifi_index > 0) dev = __dev_get_by_index(net, ifm->ifi_index); - else if (ifname[0]) - dev = __dev_get_by_name(net, ifname); - else - dev = NULL; + else { + if (ifname[0]) + dev = __dev_get_by_name(net, ifname); + else if (tb[IFLA_GROUP]) + return rtnl_group_changelink(net, + nla_get_u32(tb[IFLA_GROUP]), + ifm, tb); + else + dev = NULL; + } err = validate_linkmsg(dev, tb); if (err < 0) |