4.9-stable review patch. If anyone has any objections, please let me know.
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From: Hangbin Liu liuhangbin@gmail.com
[ Upstream commit 6c6da92808442908287fae8ebb0ca041a52469f4 ]
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 Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv6/mcast.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
--- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -2084,7 +2084,8 @@ void ipv6_mc_dad_complete(struct inet6_d 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)); } }
@@ -2096,7 +2097,8 @@ static void mld_dad_timer_expire(unsigne 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); } @@ -2454,7 +2456,8 @@ static void mld_ifc_timer_expire(unsigne 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); }