ip6mr: Convert ip6mr_net_exit_batch() to ->exit_rtnl().

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ip6mr_net_ops uses ->exit_batch() to acquire RTNL only once
for dying network namespaces.

ip6mr does not depend on the ordering of ->exit_rtnl() and
->exit_batch() of other pernet_operations (unlike fib_net_ops).

Once ip6mr_free_table() is called and all devices are
queued for destruction in ->exit_rtnl(), later during
NETDEV_UNREGISTER, ip6mr_device_event() will not see anything
in vif table and just do nothing.

Let's convert ip6mr_net_exit_batch() to ->exit_rtnl().

We will remove RTNL and unregister_netdevice_many() in
ip6mr_rules_init().

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260604224712.3209821-13-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Kuniyuki Iwashima 2026-06-04 22:46:30 +00:00 • committed by Jakub Kicinski

parent 33e6984fe5

commit 2a798e8c71

1 changed files with 15 additions and 18 deletions

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net/ipv6/ip6mr.c

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