ip6mr_rtm_dumproute() calls mr_table_dump() or mr_rtm_dumproute(),
and mr_rtm_dumproute() finally calls mr_table_dump().
mr_table_dump() calls the passed function, _ip6mr_fill_mroute().
_ip6mr_fill_mroute() is a wrapper for ip6mr_fill_mroute() to cast
struct mr_mfc * to struct mfc6_cache *.
ip6mr_fill_mroute() can already be called safely under RCU.
Let's convert ip6mr_rtm_dumproute() to RCU.
Now there is no user of the rtnl_held field in struct
fib_dump_filter, and the next patch will remove it.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260604224712.3209821-7-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3bcf206012