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With this patch multicast packets with a limited number of destinations (current default: 16) will be split and transmitted by the originator as individual unicast transmissions. Wifi broadcasts with their low bitrate are still a costly undertaking. In a mesh network this cost multiplies with the overall size of the mesh network. Therefore using multiple unicast transmissions instead of broadcast flooding is almost always less burdensome for the mesh network. The maximum amount of unicast packets can be configured via the newly introduced multicast_fanout parameter. If this limit is exceeded distribution will fall back to classic broadcast flooding. The multicast-to-unicast conversion is performed on the initial multicast sender node and counts on a final destination node, mesh-wide basis (and not next hop, neighbor node basis). Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> |
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