mld: convert ip6_sf_list to RCU

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The ip6_sf_list has been protected by mca_lock(spin_lock) so that the
critical section is atomic context. In order to switch this context,
changing locking is needed. The ip6_sf_list actually already protected
by RTNL So if it's converted to use RCU, its control path context can
be switched to sleepable.
But It doesn't remove mca_lock yet because ifmcaddr6 isn't converted
to RCU yet. So, It's not fully converted to the sleepable context.

Suggested-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Taehee Yoo 2021-03-25 16:16:54 +00:00 • committed by David S. Miller

parent 882ba1f73c

commit 4b200e3989

2 changed files with 130 additions and 77 deletions

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7

include/net/if_inet6.h

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200

net/ipv6/mcast.c

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