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net: bridge: mcast: support for IGMPv3/MLDv2 ALLOW_NEW_SOURCES report

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This patch adds handling for the ALLOW_NEW_SOURCES IGMPv3/MLDv2 report
types and limits them only when multicast_igmp_version == 3 or
multicast_mld_version == 2 respectively. Now that IGMPv3/MLDv2 handling
functions will be managing timers we need to delay their activation, thus
a new argument is added which controls if the timer should be updated.
We also disable host IGMPv3/MLDv2 handling as it's not yet implemented and
could cause inconsistent group state, the host can only join a group as
EXCLUDE {} or leave it.

v4: rename update_timer to igmpv2_mldv1 and use the passed value from
    br_multicast_add_group's callers
v3: Add IPv6/MLDv2 support

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nikolay Aleksandrov
2020-09-07 12:56:14 +03:00
committed by Jakub Kicinski
parent d6c33d67a8
commit 0436862e41
2 changed files with 137 additions and 22 deletions
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7
net/bridge/br_private.h
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@@ -876,6 +876,13 @@ static inline unsigned long br_multicast_lmqt(const struct net_bridge *br)
return br->multicast_last_member_interval *
br->multicast_last_member_count;
}
static inline unsigned long br_multicast_gmi(const struct net_bridge *br)
{
/* use the RFC default of 2 for QRV */
return 2 * br->multicast_query_interval +
br->multicast_query_response_interval;
}
#else
static inline int br_multicast_rcv(struct net_bridge *br,
struct net_bridge_port *port,