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bd2a979e53
With this patch IGMP or MLD reports are always flooded. This is necessary for the upcoming bridge integration to function without multicast packet loss. With the report handling so far bridges might miss interested multicast listeners, leading to wrongly excluding ports from multicast packet forwarding. Currently we are treating IGMP/MLD reports, the messages bridges use to learn about interested multicast listeners, just as any other multicast packet: We try to send them to nodes matching its multicast destination. Unfortunately, the destination address of reports of the older IGMPv2/MLDv1 protocol families do not strictly adhere to their own protocol: More precisely, the interested receiver, an IGMPv2 or MLDv1 querier, itself usually does not listen to the multicast destination address of any reports. Therefore with this patch we are simply excluding IGMP/MLD reports from the multicast forwarding code path and keep flooding them. By that any bridge receives them and can properly learn about listeners. To avoid compatibility issues with older nodes not yet implementing this report handling, we need to force them to flood reports: We do this by bumping the multicast TVLV version to 2, effectively disabling their multicast optimization. Tested-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> |
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| .. | ||
| bat_algo.h | ||
| bat_iv_ogm.c | ||
| bat_v.c | ||
| bat_v_elp.c | ||
| bat_v_elp.h | ||
| bat_v_ogm.c | ||
| bat_v_ogm.h | ||
| bitarray.c | ||
| bitarray.h | ||
| bridge_loop_avoidance.c | ||
| bridge_loop_avoidance.h | ||
| debugfs.c | ||
| debugfs.h | ||
| distributed-arp-table.c | ||
| distributed-arp-table.h | ||
| fragmentation.c | ||
| fragmentation.h | ||
| gateway_client.c | ||
| gateway_client.h | ||
| gateway_common.c | ||
| gateway_common.h | ||
| hard-interface.c | ||
| hard-interface.h | ||
| hash.c | ||
| hash.h | ||
| icmp_socket.c | ||
| icmp_socket.h | ||
| Kconfig | ||
| main.c | ||
| main.h | ||
| Makefile | ||
| multicast.c | ||
| multicast.h | ||
| network-coding.c | ||
| network-coding.h | ||
| originator.c | ||
| originator.h | ||
| packet.h | ||
| routing.c | ||
| routing.h | ||
| send.c | ||
| send.h | ||
| soft-interface.c | ||
| soft-interface.h | ||
| sysfs.c | ||
| sysfs.h | ||
| translation-table.c | ||
| translation-table.h | ||
| types.h | ||