diff options
| author | Anuradha Karuppiah <anuradhak@cumulusnetworks.com> | 2020-03-28 09:35:08 -0700 |
|---|---|---|
| committer | Anuradha Karuppiah <anuradhak@cumulusnetworks.com> | 2020-08-05 06:46:12 -0700 |
| commit | 7904e9fdfa66363c516fd2af151a7af2b06805fd (patch) | |
| tree | 1775285cb6010ba943506439b36571de6db8ddf1 /bgpd/bgp_attr_evpn.c | |
| parent | d0f699b5057016144d702084ef182198872e13f5 (diff) | |
bgpd: extended-community and attrs for MAC-IP SYNC route handling
A new proxy flag has been added to the already existing NA extended
community to allow proxy advertisment of a local host by a VTEP that is
yet to indpendently establish local reachability.
Reference: draft-rbickhart-evpn-ip-mac-proxy-adv
The extendend mac-mobility sequence number needs to be synced across
the ES peers. However we cannot let a ES-peer path win over a local
path on the same ES. To accomplish that some parameters such as the
MM seq number are bubbled up from the non-best path to the local path.
This mechanism is explained further in the path-selection patch.
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Diffstat (limited to 'bgpd/bgp_attr_evpn.c')
| -rw-r--r-- | bgpd/bgp_attr_evpn.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/bgpd/bgp_attr_evpn.c b/bgpd/bgp_attr_evpn.c index e81ef79fbb..aa0c59f3a7 100644 --- a/bgpd/bgp_attr_evpn.c +++ b/bgpd/bgp_attr_evpn.c @@ -195,7 +195,8 @@ uint32_t bgp_attr_mac_mobility_seqnum(struct attr *attr, uint8_t *sticky) /* * return true if attr contains router flag extended community */ -void bgp_attr_evpn_na_flag(struct attr *attr, uint8_t *router_flag) +void bgp_attr_evpn_na_flag(struct attr *attr, + uint8_t *router_flag, bool *proxy) { struct ecommunity *ecom; int i; @@ -217,10 +218,14 @@ void bgp_attr_evpn_na_flag(struct attr *attr, uint8_t *router_flag) if (type == ECOMMUNITY_ENCODE_EVPN && sub_type == ECOMMUNITY_EVPN_SUBTYPE_ND) { val = *pnt++; - if (val & ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG) { + + if (val & ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG) *router_flag = 1; - break; - } + + if (val & ECOMMUNITY_EVPN_SUBTYPE_PROXY_FLAG) + *proxy = true; + + break; } } } |