PS: If you like the new compat solution better, then please let me know what copyright header you'd like to have added.
Currently only compat-sources/net/ipv6/mcast_snoop.c has a header, identical to the one in the upstream kernel. For the other files I'm a little unsure about what to add. For instance compat-sources/net/ipv4/igmp.c is a lot based on Herbert Xu's work (similar to how mcast_snoop.c is based on Yoshifuji's work). On Wed, May 06, 2015 at 09:29:19PM +0200, Linus Lüssing wrote: > The last round of multicast patches send to the batman-adv mailinglist > to add support for the multicast optimizations in bridged scenarios, too, > unfortunately had one major conceptual flaw: It could lead to packet loss. > It's not sufficient to have the unicasting of reports implemented on > bridge-nodes only. Nodes without bridges need to treat reports the same > way. > > The issue is described in detail here: > > https://www.open-mesh.org/projects/batman-adv/wiki/Multicast-optimizations-listener-reports > > > Cheers, Linus > > ----- > > Changelog: > v5: > * Removed RFC tag: Needed exports got merged to net-next and are going to > be available with Linux 4.2 > * Redid compat solution - now fully backwards compatible down to 2.6.33 > v4: > * excluded bridge part from this patchset, they should > hopefully be added to net-next soon > * Added a compat solution (PATCH 3/3) > * Removed Kconfig-depends as by David's suggestion the needed parsing > functions for MLD are going to be forced built-ins even if IPv6 is > going to be built as a module > * Removed unused variable 'int ret' in batadv_mcast_is_report_ipv6() > * Adjusted to new folder structure > v3: > * Adding Kconfig-depends and #if's > (so basically adding similar dependancy constraints as the bridge code > has, except that there are no depends if batman-adv gets compiled without > multicast optimizations) > -> the case of IPv6=M and batman-adv=y is still impossible if multicast > optimizations are enabled; but I don't see the practical demand for that > either - people who use IPv6 as a module will probably also want to > use batman-adv as a module > v2: > * various bugfixes (now runtime tested, too - should(tm) work) > * added netdev+bridge mailinglists
