diff options
| author | David Lamparter <equinox@opensourcerouting.org> | 2021-08-24 18:21:59 +0200 |
|---|---|---|
| committer | Rafael Zalamena <rzalamena@opensourcerouting.org> | 2025-02-10 15:40:07 -0300 |
| commit | f07d379b74e06f0602f3779e78038dc708aa7345 (patch) | |
| tree | 80b01573958993e1bda24b32184a3dcb085f303d /pimd/pim_igmpv3.c | |
| parent | baf4c1a78fe4cafdbb2cdbed030a31ea04a18c4a (diff) | |
pimd: implement IGMP group/source count limit
For groups we can just look at the length of the list, for sources we
need to count them on a per-interface level.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Diffstat (limited to 'pimd/pim_igmpv3.c')
| -rw-r--r-- | pimd/pim_igmpv3.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pimd/pim_igmpv3.c b/pimd/pim_igmpv3.c index 7348d8130f..7cb168dc5d 100644 --- a/pimd/pim_igmpv3.c +++ b/pimd/pim_igmpv3.c @@ -423,6 +423,7 @@ struct gm_source *igmp_find_source_by_addr(struct gm_group *group, struct gm_source *igmp_get_source_by_addr(struct gm_group *group, struct in_addr src_addr, bool *new) { + const struct pim_interface *pim_interface = group->interface->info; struct gm_source *src; if (new) @@ -432,6 +433,14 @@ struct gm_source *igmp_get_source_by_addr(struct gm_group *group, if (src) return src; + if (listcount(group->group_source_list) >= pim_interface->gm_source_limit) { + if (PIM_DEBUG_GM_TRACE) + zlog_debug("interface %s has reached source limit (%u), refusing to add source %pI4 (group %pI4)", + group->interface->name, pim_interface->gm_source_limit, + &src_addr, &group->group_addr); + return NULL; + } + if (PIM_DEBUG_GM_TRACE) { char group_str[INET_ADDRSTRLEN]; char source_str[INET_ADDRSTRLEN]; |