Messages in this thread | | | Date | Wed, 23 Jul 2014 15:13:39 -0700 (PDT) | Subject | Re: [PATCH v3] ipv4: Make IP_MULTICAST_ALL and IP_MSFILTER work on raw sockets | From | David Miller <> |
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From: Quentin Armitage <quentin@armitage.org.uk> Date: Wed, 23 Jul 2014 09:58:01 +0100
> Currently, although IP_MULTICAST_ALL and IP_MSFILTER ioctl calls succeed on > raw sockets, there is no code to implement the functionality on received > packets; it is only implemented for UDP sockets. The raw(7) man page states: > "In addition, all ip(7) IPPROTO_IP socket options valid for datagram sockets > are supported", which implies these ioctls should work on raw sockets. > > To fix this, add a call to ip_mc_sf_allow on raw sockets. > > This should not break any existing code, since the current position of > not calling ip_mc_sf_filter makes it behave as if neither the IP_MULTICAST_ALL > nor the IP_MSFILTER ioctl had been called. Adding the call to ip_mc_sf_allow > will therefore maintain the current behaviour so long as IP_MULTICAST_ALL and > IP_MSFILTER ioctls are not called. Any code that currently is calling > IP_MULTICAST_ALL or IP_MSFILTER ioctls on raw sockets presumably is wanting > the filter to be applied, although no filtering will currently be occurring. > > Signed-off-by: Quentin Armitage <quentin@armitage.org.uk>
Applied to net-next, thanks.
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