After recieving MLD querys, we update idev->mc_maxdelay with max_delay from query header. This make the later unsolicited reports have the same interval with mc_maxdelay, which means we may send unsolicited reports with long interval time instead of default configured interval time.
Also as we will not call ipv6_mc_reset() after device up. This issue will be there even after leave the group and join other groups. Fixes: fc4eba58b4c14 ("ipv6: make unsolicited report intervals configurable for mld") Signed-off-by: Hangbin Liu <liuhang...@gmail.com> --- net/ipv6/mcast.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 975021d..c0c7408 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -2082,7 +2082,8 @@ void ipv6_mc_dad_complete(struct inet6_dev *idev) mld_send_initial_cr(idev); idev->mc_dad_count--; if (idev->mc_dad_count) - mld_dad_start_timer(idev, idev->mc_maxdelay); + mld_dad_start_timer(idev, + unsolicited_report_interval(idev)); } } @@ -2094,7 +2095,8 @@ static void mld_dad_timer_expire(struct timer_list *t) if (idev->mc_dad_count) { idev->mc_dad_count--; if (idev->mc_dad_count) - mld_dad_start_timer(idev, idev->mc_maxdelay); + mld_dad_start_timer(idev, + unsolicited_report_interval(idev)); } in6_dev_put(idev); } @@ -2452,7 +2454,8 @@ static void mld_ifc_timer_expire(struct timer_list *t) if (idev->mc_ifc_count) { idev->mc_ifc_count--; if (idev->mc_ifc_count) - mld_ifc_start_timer(idev, idev->mc_maxdelay); + mld_ifc_start_timer(idev, + unsolicited_report_interval(idev)); } in6_dev_put(idev); } -- 2.5.5