batman-adv: Fix multicast packet loss with a single WANT_ALL_IPV4/6 flag

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As the kernel doc describes too the code is supposed to skip adding
multicast TT entries if both the WANT_ALL_IPV4 and WANT_ALL_IPV6 flags
are present.

Unfortunately, the current code even skips adding multicast TT entries
if only either the WANT_ALL_IPV4 or WANT_ALL_IPV6 is present.

This could lead to IPv6 multicast packet loss if only an IGMP but not an
MLD querier is present for instance or vice versa.

Fixes: 687937ab34 ("batman-adv: Add multicast optimization support for bridged setups")
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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Linus Lüssing 2018-03-04 13:08:17 +01:00 • committed by Simon Wunderlich

parent f22e08932c

commit 74c12c630f

1 changed files with 2 additions and 2 deletions

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net/batman-adv/multicast.c

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