diff options
| author | Xiao Liang <shaw.leon@gmail.com> | 2025-02-19 15:50:29 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-02-22 02:28:02 +0300 |
| commit | cf517ac16ad96f3953d65ea198c0b310a1ffa14f (patch) | |
| tree | d8243f30ed1f38dda34dae12a11885eeff4c3de5 /include | |
| parent | 69c7be1b903fca2835e80ec506bd1d75ce84fb4d (diff) | |
| download | linux-cf517ac16ad96f3953d65ea198c0b310a1ffa14f.tar.xz | |
net: Use link/peer netns in newlink() of rtnl_link_ops
Add two helper functions - rtnl_newlink_link_net() and
rtnl_newlink_peer_net() for netns fallback logic. Peer netns falls back
to link netns, and link netns falls back to source netns.
Convert the use of params->net in netdevice drivers to one of the helper
functions for clarity.
Signed-off-by: Xiao Liang <shaw.leon@gmail.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250219125039.18024-4-shaw.leon@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/rtnetlink.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h index 563a6a27436c..b22a106621fb 100644 --- a/include/net/rtnetlink.h +++ b/include/net/rtnetlink.h @@ -88,6 +88,23 @@ struct rtnl_newlink_params { struct nlattr **data; }; +/* Get effective link netns from newlink params. Generally, this is link_net + * and falls back to src_net. But for compatibility, a driver may * choose to + * use dev_net(dev) instead. + */ +static inline struct net *rtnl_newlink_link_net(struct rtnl_newlink_params *p) +{ + return p->link_net ? : p->src_net; +} + +/* Get peer netns from newlink params. Fallback to link netns if peer netns is + * not specified explicitly. + */ +static inline struct net *rtnl_newlink_peer_net(struct rtnl_newlink_params *p) +{ + return p->peer_net ? : rtnl_newlink_link_net(p); +} + /** * struct rtnl_link_ops - rtnetlink link operations * |