[v1,net-next,00/13] rtnetlink: Refactor rtnl_{new,del,set}link() for per-netns RTNL.

Message

Kuniyuki Iwashima Oct. 9, 2024, 11:16 p.m. UTC

This is a prep for the next series where we will push RTNL down to
rtnl_{new,del,set}link().

That means, for example, __rtnl_newlink() is always under RTNL, but
rtnl_newlink() has a non-RTNL section.

As a prerequisite for per-netns RTNL, we will move netns validation
(and RTNL-independent validations if possible) to that section.

rtnl_link_ops and rtnl_af_ops will be protected with SRCU not to
depend on RTNL.


Kuniyuki Iwashima (13):
  rtnetlink: Allocate linkinfo[] as struct rtnl_newlink_tbs.
  rtnetlink: Call validate_linkmsg() in do_setlink().
  rtnetlink: Factorise do_setlink() path from __rtnl_newlink().
  rtnetlink: Move simple validation from __rtnl_newlink() to
    rtnl_newlink().
  rtnetlink: Move rtnl_link_ops_get() and retry to rtnl_newlink().
  rtnetlink: Move ops->validate to rtnl_newlink().
  rtnetlink: Protect struct rtnl_link_ops with SRCU.
  rtnetlink: Call rtnl_link_get_net_capable() in rtnl_newlink().
  rtnetlink: Fetch IFLA_LINK_NETNSID in rtnl_newlink().
  rtnetlink: Clean up rtnl_dellink().
  rtnetlink: Clean up rtnl_setlink().
  rtnetlink: Call rtnl_link_get_net_capable() in do_setlink().
  rtnetlink: Protect struct rtnl_af_ops with SRCU.

 include/net/rtnetlink.h |  10 +-
 net/core/rtnetlink.c    | 552 ++++++++++++++++++++++------------------
 2 files changed, 310 insertions(+), 252 deletions(-)