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authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2018-07-13 12:16:43 +0300
committerDavid S. Miller <davem@davemloft.net>2018-07-13 14:21:16 -0700
commitc921c2077b32081617789a645120148bc8b60c98 (patch)
tree532124740dbc9fba27b1d55bae50d34205cc115f /drivers/of
parent430ac34de9693bfe4bea0bab830e0ca0be9ef4b9 (diff)
downloadlinux-c921c2077b32081617789a645120148bc8b60c98.tar.bz2
net: ipmr: add support for passing full packet on wrong vif
This patch adds support for IGMPMSG_WRVIFWHOLE which is used to pass full packet and real vif id when the incoming interface is wrong. While the RP and FHR are setting up state we need to be sending the registers encapsulated with all the data inside otherwise we lose it. The RP then decapsulates it and forwards it to the interested parties. Currently with WRONGVIF we can only be sending empty register packets and will lose that data. This behaviour can be enabled by using MRT_PIM with val == IGMPMSG_WRVIFWHOLE. This doesn't prevent IGMPMSG_WRONGVIF from happening, it happens in addition to it, also it is controlled by the same throttling parameters as WRONGVIF (i.e. 1 packet per 3 seconds currently). Both messages are generated to keep backwards compatibily and avoid breaking someone who was enabling MRT_PIM with val == 4, since any positive val is accepted and treated the same. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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