[PATCH v3 net-next 0/7] ip_tunnel: Support per-netns device unregistration.

Patch 1 - 3 are prep patches to unlink ip_tunnel device from
the hash table in ip_tunnel_dellink() only.

Patch 4 removes ip_tunnel_del() from ip_tunnel_uninit() to
ip_tunnel_dellink().

Patch 5 & 6 adds mutex to protect the per-netns hash table.

Patch 7 uses unregister_netdevice_queue_net() to support
cross-netns device unregistration.


Changes:
  v3:
    * Patch 7
      * Check check_net(t->net) in ip_tunnel_ctl().

  v2: https://lore.kernel.org/netdev/20260909234422.2416506-1-kuniyu@google.com/ (local)
    * Patch 1
      * Correct commit message; ip_tunnel_uninit() unlinks
        DVMRP device, instead of ->dellink()
    * Patch 7
      * Check if (!itn->fb_tunnel_dev) in ip_tunnel_ctl().

  v1: https://lore.kernel.org/netdev/20260907225846.3787676-1-kuniyu@google.com/ (local)


Kuniyuki Iwashima (7):
  ipmr: Call ->dellink() to remove DVMRP tunnel device.
  ip_tunnel: Set itn->fb_tunnel_dev to NULL in ip_tunnel_delete_net().
  ip_tunnel: Don't pass rtnl_link_ops to ip_tunnel_delete_net().
  ip_tunnel: Centralise ip_tunnel_del() to ip_tunnel_dellink().
  ip_tunnel: Unify error paths in ip_tunnel_newlink() and
    ip_tunnel_changelink().
  ip_tunnel: Protect ip_tunnel_net.tunnels[] with mutex.
  ip_tunnel: Support per-netns device unregistration.

 include/net/ip_tunnels.h |   2 +-
 net/ipv4/ip_gre.c        |   6 +-
 net/ipv4/ip_tunnel.c     | 132 +++++++++++++++++++++++++++------------
 net/ipv4/ip_vti.c        |   2 +-
 net/ipv4/ipip.c          |   2 +-
 net/ipv4/ipmr.c          |  12 +++-
 6 files changed, 108 insertions(+), 48 deletions(-)

-- 
2.55.0.1007.g17ff1f9808-goog