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| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2024-11-07 16:48:18 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-11-11 17:26:52 -0800 |
| commit | 28690e5361c05fd4ef0ca3a17d1c667cba790554 (patch) | |
| tree | 1d11d4f82e4d6cbd2e9e1e734fc4aaca55110fab /include/net | |
| parent | rtnetlink: Introduce struct rtnl_nets and helpers. (diff) | |
| download | linux-28690e5361c05fd4ef0ca3a17d1c667cba790554.tar.gz linux-28690e5361c05fd4ef0ca3a17d1c667cba790554.zip | |
rtnetlink: Add peer_type in struct rtnl_link_ops.
In ops->newlink(), veth, vxcan, and netkit call rtnl_link_get_net() with
a net pointer, which is the first argument of ->newlink().
rtnl_link_get_net() could return another netns based on IFLA_NET_NS_PID
and IFLA_NET_NS_FD in the peer device's attributes.
We want to get it and fill rtnl_nets->nets[] in advance in rtnl_newlink()
for per-netns RTNL.
All of the three get the peer netns in the same way:
1. Call rtnl_nla_parse_ifinfomsg()
2. Call ops->validate() (vxcan doesn't have)
3. Call rtnl_link_get_net_tb()
Let's add a new field peer_type to struct rtnl_link_ops and prefetch
netns in the peer ifla to add it to rtnl_nets in rtnl_newlink().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20241108004823.29419-6-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/rtnetlink.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h index ef7c11f0d74c..bef76abcff8d 100644 --- a/include/net/rtnetlink.h +++ b/include/net/rtnetlink.h @@ -75,6 +75,7 @@ static inline int rtnl_msg_family(const struct nlmsghdr *nlh) * @srcu: Used internally * @kind: Identifier * @netns_refund: Physical device, move to init_net on netns exit + * @peer_type: Peer device specific netlink attribute number (e.g. VETH_INFO_PEER) * @maxtype: Highest device specific netlink attribute number * @policy: Netlink policy for device specific attribute validation * @validate: Optional validation function for netlink/changelink parameters @@ -116,6 +117,7 @@ struct rtnl_link_ops { void (*setup)(struct net_device *dev); bool netns_refund; + const u16 peer_type; unsigned int maxtype; const struct nla_policy *policy; int (*validate)(struct nlattr *tb[], |