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bgpd: Added support for vni filtering

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1. provision to add match clause with a vni under route-map

Ticket: CM-16349
Review: CCR-6190
Unit-test: Manual (logs attached to ticket)

Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>
This commit is contained in:
Mitesh Kanjariya 2017-06-21 02:00:24 -07:00 committed by Donald Sharp
parent d37ba5499e
commit 16f7ce2b1e
2 changed files with 81 additions and 0 deletions
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7
bgpd/bgp_route.c
View File

@ -1580,11 +1580,18 @@ int subgroup_announce_check(struct bgp_node *rn, struct bgp_info *ri,
/* Route map & unsuppress-map apply. */
if (ROUTE_MAP_OUT_NAME(filter) || (ri->extra && ri->extra->suppress)) {
struct bgp_info info;
struct bgp_info_extra dummy_info_extra;
struct attr dummy_attr;
info.peer = peer;
info.attr = attr;
if (ri->extra) {
memcpy(&dummy_info_extra, ri->extra,
sizeof(struct bgp_info_extra));
info.extra = &dummy_info_extra;
}
/* don't confuse inbound and outbound setting */
RESET_FLAG(attr->rmap_change_flags);

74
bgpd/bgp_routemap.c
View File

@ -620,6 +620,54 @@ struct route_map_rule_cmd route_match_mac_address_cmd = {
"mac address", route_match_mac_address, route_match_mac_address_compile,
route_match_mac_address_free};
/* `match vni' */
/* Match function should return 1 if match is success else return
zero. */
static route_map_result_t route_match_vni(void *rule, struct prefix *prefix,
route_map_object_t type, void *object)
{
vni_t vni = 0;
struct bgp_info *bgp_info = NULL;
if (type == RMAP_BGP) {
vni = *((vni_t *)rule);
bgp_info = (struct bgp_info *)object;
if (vni == label2vni(&bgp_info->extra->label))
return RMAP_MATCH;
}
return RMAP_NOMATCH;
}
/* Route map `vni' match statement. */
static void *route_match_vni_compile(const char *arg)
{
vni_t *vni = NULL;
char *end = NULL;
vni = XMALLOC(MTYPE_ROUTE_MAP_COMPILED, sizeof(vni_t));
if (!vni)
return NULL;
*vni = strtoul(arg, &end, 10);
if (*end != '\0')
return NULL;
return vni;
}
/* Free route map's compiled `vni' value. */
static void route_match_vni_free(void *rule)
{
XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}
/* Route map commands for vni matching. */
struct route_map_rule_cmd route_match_evpn_vni_cmd = {
"vni", route_match_vni, route_match_vni_compile, route_match_vni_free};
/* `match local-preference LOCAL-PREF' */
/* Match function return 1 if match is success else return zero. */
@ -3070,6 +3118,29 @@ DEFUN (no_match_mac_address,
RMAP_EVENT_FILTER_DELETED);
}
DEFUN (match_evpn_vni,
match_evpn_vni_cmd,
"match evpn vni (1-16777215)",
MATCH_STR
"Match VNI\n"
"VNI ID\n")
{
return bgp_route_match_add(vty, "evpn vni", argv[2]->arg,
RMAP_EVENT_MATCH_ADDED);
}
DEFUN (no_match_evpn_vni,
no_match_evpn_vni_cmd,
"no match evpn vni (1-16777215)",
NO_STR
MATCH_STR
"Match VNI\n"
"VNI ID\n")
{
return bgp_route_match_delete(vty, "evpn vni", argv[3]->arg,
RMAP_EVENT_MATCH_DELETED);
}
DEFUN (match_peer,
match_peer_cmd,
"match peer <A.B.C.D|X:X::X:X>",
@ -4427,6 +4498,7 @@ void bgp_route_map_init(void)
route_map_install_match(&route_match_interface_cmd);
route_map_install_match(&route_match_tag_cmd);
route_map_install_match(&route_match_mac_address_cmd);
route_map_install_match(&route_match_evpn_vni_cmd);
route_map_install_set(&route_set_ip_nexthop_cmd);
route_map_install_set(&route_set_local_pref_cmd);
@ -4459,6 +4531,8 @@ void bgp_route_map_init(void)
install_element(RMAP_NODE, &no_match_ip_route_source_prefix_list_cmd);
install_element(RMAP_NODE, &match_mac_address_cmd);
install_element(RMAP_NODE, &no_match_mac_address_cmd);
install_element(RMAP_NODE, &match_evpn_vni_cmd);
install_element(RMAP_NODE, &no_match_evpn_vni_cmd);
install_element(RMAP_NODE, &match_aspath_cmd);
install_element(RMAP_NODE, &no_match_aspath_cmd);