From: Hangbin Liu <liuhang...@gmail.com> Date: Fri, 20 Jul 2018 14:04:27 +0800
> There are two scenarios that we will restore deleted records. The first is > when device down and up(or unmap/remap). In this scenario the new filter > mode is same with previous one. Because we get it from in_dev->mc_list and > we do not touch it during device down and up. > > The other scenario is when a new socket join a group which was just delete > and not finish sending status reports. In this scenario, we should use the > current filter mode instead of restore old one. Here are 4 cases in total. > > old_socket new_socket before_fix after_fix > IN(A) IN(A) ALLOW(A) ALLOW(A) > IN(A) EX( ) TO_IN( ) TO_EX( ) > EX( ) IN(A) TO_EX( ) ALLOW(A) > EX( ) EX( ) TO_EX( ) TO_EX( ) > > Fixes: 24803f38a5c0b (igmp: do not remove igmp souce list info when set link > down) > Fixes: 1666d49e1d416 (mld: do not remove mld souce list info when set link > down) > Signed-off-by: Hangbin Liu <liuhang...@gmail.com> Applied and queued up for -stable, thank you.
