diff options
Diffstat (limited to 'bgpd/bgp_attr_evpn.c')
| -rw-r--r-- | bgpd/bgp_attr_evpn.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/bgpd/bgp_attr_evpn.c b/bgpd/bgp_attr_evpn.c index 14ff01ada5..88e520fdc5 100644 --- a/bgpd/bgp_attr_evpn.c +++ b/bgpd/bgp_attr_evpn.c @@ -210,6 +210,39 @@ uint32_t bgp_attr_mac_mobility_seqnum(struct attr *attr, uint8_t *sticky) return 0; } +/* + * return true if attr contains router flag extended community + */ +void bgp_attr_evpn_na_flag(struct attr *attr, uint8_t *router_flag) +{ + struct ecommunity *ecom; + int i; + uint8_t val; + + ecom = attr->ecommunity; + if (!ecom || !ecom->size) + return; + + /* If there is a evpn na extendd community set router_flag */ + for (i = 0; i < ecom->size; i++) { + uint8_t *pnt; + uint8_t type, sub_type; + + pnt = (ecom->val + (i * ECOMMUNITY_SIZE)); + type = *pnt++; + sub_type = *pnt++; + + if (type == ECOMMUNITY_ENCODE_EVPN && + sub_type == ECOMMUNITY_EVPN_SUBTYPE_ND) { + val = *pnt++; + if (val & ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG) { + *router_flag = 1; + break; + } + } + } +} + /* dst prefix must be AF_INET or AF_INET6 prefix, to forge EVPN prefix */ extern int bgp_build_evpn_prefix(int evpn_type, uint32_t eth_tag, struct prefix *dst) |