From: Quentin Armitage Date: Wed, 23 Jul 2014 08:58:01 +0000 (+0100) Subject: ipv4: Make IP_MULTICAST_ALL and IP_MSFILTER work on raw sockets X-Git-Tag: omap-for-v3.17/fixes-against-rc2~149^2~95 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f5220d63991f3fcb3d19efe8af0c8f75dcf0309b;p=pandora-kernel.git ipv4: Make IP_MULTICAST_ALL and IP_MSFILTER work on raw sockets 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 Signed-off-by: David S. Miller --- Reading git-diff-tree failed