ipv6: mcast: fix unsolicited report interval after receiving querys

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 <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 975021df7c1cf2eae6897e3dd57ea20998f4ea90..c0c74088f2afa841de20ed3382f7c6c6087691c3 100644 (file)
--- 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);
 }