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ipv4: Replace &arp_tbl with arp_table(net).

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We will allocate per-netns neigh_table in net->neigh_tables[].

Let's replace &arp_tbl with arp_table(net) and remove extern
definition for arp_tbl.

Three notes:

  1. mlx5e_rep_netevent_event() and nfp_tun_neigh_event_handler()
     have code assuming neigh_table other than &arp_tbl and
     &nb_tbl, and the part is removed as it will be false once
     per-netns table is allocated.

  2. prestera and rocker uses init_net because they set
     dev->netns_immutable to true.

  3. mlx5e_tc_update_neigh_used_value() dereferences nhe->neigh_dev
     in trace_mlx5e_tc_update_neigh_used_value().

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260902203722.926528-9-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Kuniyuki Iwashima 2026-09-02 20:36:49 +00:00 • committed by Jakub Kicinski
commit 2430df635a
20 changed files with 159 additions and 112 deletions
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