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IGMP: Improved handling of (*,G) join and leave

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Change-Id: I48a92035b58d83420eb3eed3f05a75ba283543c2
Signed-off-by: Neale Ranns <nranns@cisco.com>
This commit is contained in:
Neale Ranns
2018-11-06 05:51:58 -08:00
committed by Damjan Marion
parent 3206bb15aa
commit 0f7af53e73
2 changed files with 142 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
src/plugins/igmp/igmp_report.c
View File

@ -53,29 +53,35 @@ igmp_group_mk_source_list (const igmp_membership_group_v3_t * r)
}
static void
igmp_handle_group_update (igmp_config_t * config,
igmp_handle_group_exclude (igmp_config_t * config,
const igmp_membership_group_v3_t * igmp_group)
{
ip46_address_t *src, *srcs;
igmp_group_t *group;
ip46_address_t key = {
.ip4 = igmp_group->group_address,
};
u16 n;
/*
* treat an exclude all sources as a *,G join
*/
n = clib_net_to_host_u16 (igmp_group->n_src_addresses);
if (0 == n)
{
ip46_address_t *src, *srcs;
igmp_group_t *group;
srcs = igmp_group_mk_source_list (igmp_group);
group = igmp_group_lookup (config, &key);
srcs = igmp_group_mk_source_list (igmp_group);
IGMP_DBG (" ..group-update: %U (%U, %U)",
IGMP_DBG (" ..group-update: %U (*, %U)",
format_vnet_sw_if_index_name,
vnet_get_main (), config->sw_if_index,
format_igmp_key, &key, format_igmp_src_addr_list, srcs);
vnet_get_main (), config->sw_if_index, format_igmp_key, &key);
if (NULL == group)
{
group = igmp_group_alloc (config, &key, IGMP_FILTER_MODE_INCLUDE);
}
/* create or update all sources */
vec_foreach (src, srcs)
{
igmp_group_src_update (group, src, IGMP_MODE_ROUTER);
@ -83,6 +89,13 @@ igmp_handle_group_update (igmp_config_t * config,
vec_free (srcs);
}
else
{
IGMP_DBG (" ..group-update: %U (*, %U) source exclude ignored",
format_vnet_sw_if_index_name,
vnet_get_main (), config->sw_if_index, format_igmp_key, &key);
}
}
static void
igmp_handle_group_block (igmp_config_t * config,
@ -131,6 +144,46 @@ igmp_handle_group_block (igmp_config_t * config,
vec_free (srcs);
}
static void
igmp_handle_group_update (igmp_config_t * config,
const igmp_membership_group_v3_t * igmp_group)
{
ip46_address_t *src, *srcs;
igmp_group_t *group;
ip46_address_t key = {
.ip4 = igmp_group->group_address,
};
/*
* treat a TO_INC({}) as a (*,G) leave
*/
if (0 == clib_net_to_host_u16 (igmp_group->n_src_addresses))
{
return (igmp_handle_group_block (config, igmp_group));
}
srcs = igmp_group_mk_source_list (igmp_group);
group = igmp_group_lookup (config, &key);
IGMP_DBG (" ..group-update: %U (%U, %U)",
format_vnet_sw_if_index_name,
vnet_get_main (), config->sw_if_index,
format_igmp_key, &key, format_igmp_src_addr_list, srcs);
if (NULL == group)
{
group = igmp_group_alloc (config, &key, IGMP_FILTER_MODE_INCLUDE);
}
/* create or update all sources */
vec_foreach (src, srcs)
{
igmp_group_src_update (group, src, IGMP_MODE_ROUTER);
}
vec_free (srcs);
}
static void
igmp_handle_group (igmp_config_t * config,
const igmp_membership_group_v3_t * igmp_group)
@ -151,6 +204,7 @@ igmp_handle_group (igmp_config_t * config,
break;
case IGMP_MEMBERSHIP_GROUP_mode_is_exclude:
case IGMP_MEMBERSHIP_GROUP_change_to_exclude:
igmp_handle_group_exclude (config, igmp_group);
break;
/*
* all other types ignored

69
test/test_igmp.py
View File

@ -629,7 +629,7 @@ class TestIgmp(VppTestCase):
self.assertFalse(self.vapi.igmp_dump())
#
# A (*,G) host report
# a TO_EX({}) / IN_EX({}) is treated like a (*,G) join
#
p_j = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
@ -637,13 +637,78 @@ class TestIgmp(VppTestCase):
option="router_alert")]) /
IGMPv3(type="Version 3 Membership Report") /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype="Allow New Sources", maddr="239.1.1.2"))
IGMPv3gr(rtype="Change To Exclude Mode", maddr="239.1.1.2"))
self.send(self.pg0, p_j)
self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
"239.1.1.2", "0.0.0.0", 1))
p_j = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
options=[IPOption(copy_flag=1, optclass="control",
option="router_alert")]) /
IGMPv3(type="Version 3 Membership Report") /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype="Mode Is Exclude", maddr="239.1.1.3"))
self.send(self.pg0, p_j)
self.assertTrue(wait_for_igmp_event(self, 1, self.pg0,
"239.1.1.3", "0.0.0.0", 1))
#
# A 'allow sourcees' for {} should be ignored as it should
# never be sent.
#
p_j = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
options=[IPOption(copy_flag=1, optclass="control",
option="router_alert")]) /
IGMPv3(type="Version 3 Membership Report") /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype="Allow New Sources", maddr="239.1.1.4"))
self.send(self.pg0, p_j)
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertTrue(find_igmp_state(dump, self.pg0,
"239.1.1.2", "0.0.0.0"))
self.assertTrue(find_igmp_state(dump, self.pg0,
"239.1.1.3", "0.0.0.0"))
self.assertFalse(find_igmp_state(dump, self.pg0,
"239.1.1.4", "0.0.0.0"))
#
# a TO_IN({}) and IS_IN({}) are treated like a (*,G) leave
#
self.vapi.cli("set logging class igmp level debug")
p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
options=[IPOption(copy_flag=1, optclass="control",
option="router_alert")]) /
IGMPv3(type="Version 3 Membership Report") /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype="Change To Include Mode", maddr="239.1.1.2"))
self.send(self.pg0, p_l)
self.assertTrue(wait_for_igmp_event(self, 2, self.pg0,
"239.1.1.2", "0.0.0.0", 0))
p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst="224.0.0.22", tos=0xc0, ttl=1,
options=[IPOption(copy_flag=1, optclass="control",
option="router_alert")]) /
IGMPv3(type="Version 3 Membership Report") /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype="Mode Is Include", maddr="239.1.1.3"))
self.send(self.pg0, p_l)
self.assertTrue(wait_for_igmp_event(self, 2, self.pg0,
"239.1.1.3", "0.0.0.0", 0))
self.assertFalse(self.vapi.igmp_dump(self.pg0.sw_if_index))
#
# disable router config
#