diff options
| author | Pavel Emelyanov <[email protected]> | 2012-08-08 21:52:46 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2012-08-09 23:18:06 +0000 |
| commit | 9c7dafbfab1554705f85523fead578aa1a3d338c (patch) | |
| tree | 462dc2a2b854b3c7ad80a351a0ef780b790bc109 /net/core/rtnetlink.c | |
| parent | net: Dont use ifindices in hash fns (diff) | |
| download | kernel-9c7dafbfab1554705f85523fead578aa1a3d338c.tar.gz kernel-9c7dafbfab1554705f85523fead578aa1a3d338c.zip | |
net: Allow to create links with given ifindex
Currently the RTM_NEWLINK results in -EOPNOTSUPP if the ifinfomsg->ifi_index
is not zero. I propose to allow requesting ifindices on link creation. This
is required by the checkpoint-restore to correctly restore a net namespace
(i.e. -- a container).
Signed-off-by: Pavel Emelyanov <[email protected]>
Acked-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/core/rtnetlink.c')
| -rw-r--r-- | net/core/rtnetlink.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index db037c9a4c48..34d975b0f277 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1812,8 +1812,6 @@ replay: return -ENODEV; } - if (ifm->ifi_index) - return -EOPNOTSUPP; if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) return -EOPNOTSUPP; @@ -1839,10 +1837,14 @@ replay: return PTR_ERR(dest_net); dev = rtnl_create_link(net, dest_net, ifname, ops, tb); - - if (IS_ERR(dev)) + if (IS_ERR(dev)) { err = PTR_ERR(dev); - else if (ops->newlink) + goto out; + } + + dev->ifindex = ifm->ifi_index; + + if (ops->newlink) err = ops->newlink(net, dev, tb, data); else err = register_netdevice(dev); |