From 06d1c450f355efa63dfe0cbe835db6d58ebb2672 Mon Sep 17 00:00:00 2001 From: Donald Sharp Date: Fri, 2 Dec 2016 12:48:06 -0500 Subject: pimd: With igmpv2 turned on don't accept 224.0.0.0/24 groups When a group is in the 224.0.0.0/24 range and we have igmp v2 turned on do not allow it to be considered for inclusion as a mroute. Ticket: CM-13855 Signed-off-by: Donald Sharp Reviewed-by: --- pimd/pim_util.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'pimd/pim_util.c') diff --git a/pimd/pim_util.c b/pimd/pim_util.c index 087101e1a..1b1b5ef8f 100644 --- a/pimd/pim_util.c +++ b/pimd/pim_util.c @@ -106,6 +106,26 @@ void pim_pkt_dump(const char *label, const uint8_t *buf, int size) zlog_hexdump(buf, size); } +int +pim_is_group_224_0_0_0_24 (struct in_addr group_addr) +{ + static int first = 1; + static struct prefix group_224; + struct prefix group; + + if (first) + { + str2prefix ("224.0.0.0/24", &group_224); + first = 0; + } + + group.family = AF_INET; + group.u.prefix4 = group_addr; + group.prefixlen = 32; + + return prefix_match (&group_224, &group); +} + int pim_is_group_224_4 (struct in_addr group_addr) { -- cgit v1.2.3