diff options
| author | Donatas Abraitis <donatas@opensourcerouting.org> | 2023-04-05 15:51:45 +0300 |
|---|---|---|
| committer | Donatas Abraitis <donatas@opensourcerouting.org> | 2023-04-14 21:04:40 +0300 |
| commit | c9a256144479bb0836491b6bdad6a79df85e6960 (patch) | |
| tree | 85f637616dc8b1dbd11722acf44255847efbaa6c /bgpd/bgp_ecommunity.h | |
| parent | 068c4dfe0b8196e6f67d1211e492f5d265801c9e (diff) | |
bgpd: Implement Node Target Extended Communities
kttps://datatracker.ietf.org/doc/html/draft-ietf-idr-node-target-ext-comm
unet> sh r1 vtysh -c 'sh ip bgp nei 192.168.1.2 adver'
BGP table version is 1, local router ID is 192.168.1.1, vrf id 0
Default local pref 100, local AS 65001
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.10/32 0.0.0.0 0 32768 i
Total number of prefixes 1
unet> sh r1 vtysh -c 'sh ip bgp nei 192.168.1.3 adver'
BGP table version is 1, local router ID is 192.168.1.1, vrf id 0
Default local pref 100, local AS 65001
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.10/32 0.0.0.0 0 32768 i
Total number of prefixes 1
unet> sh r2 vtysh -c 'show ip bgp 10.10.10.10/32'
% Network not in table
unet> sh r3 vtysh -c 'show ip bgp 10.10.10.10/32'
BGP routing table entry for 10.10.10.10/32, version 1
Paths: (1 available, best #1, table default)
Advertised to non peer-group peers:
192.168.1.1
65001
192.168.1.1 from 192.168.1.1 (192.168.1.1)
Origin IGP, metric 0, valid, external, best (First path received)
Extended Community: NT:192.168.1.3 NT:192.168.1.4
Last update: Tue Apr 11 23:19:33 2023
unet>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Diffstat (limited to 'bgpd/bgp_ecommunity.h')
| -rw-r--r-- | bgpd/bgp_ecommunity.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/bgpd/bgp_ecommunity.h b/bgpd/bgp_ecommunity.h index 83a1584489..1efb0276d0 100644 --- a/bgpd/bgp_ecommunity.h +++ b/bgpd/bgp_ecommunity.h @@ -101,6 +101,10 @@ enum ecommunity_origin_validation_states { /* Extended Community readable string length */ #define ECOMMUNITY_STRLEN 64 +/* Node Target Extended Communities */ +#define ECOMMUNITY_NODE_TARGET 0x09 +#define ECOMMUNITY_NODE_TARGET_RESERVED 0 + /* Extended Communities attribute. */ struct ecommunity { /* Reference counter. */ @@ -257,6 +261,26 @@ static inline void encode_origin_validation_state(enum rpki_states state, eval->val[7] = ovs_state; } +static inline void encode_node_target(struct in_addr *node_id, + struct ecommunity_val *eval, bool trans) +{ + /* + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | 0x01 or 0x41 | Sub-Type(0x09) | Target BGP Identifier | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Target BGP Identifier (cont.) | Reserved | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + memset(eval, 0, sizeof(*eval)); + eval->val[0] = ECOMMUNITY_ENCODE_IP; + if (!trans) + eval->val[0] |= ECOMMUNITY_ENCODE_IP_NON_TRANS; + eval->val[1] = ECOMMUNITY_NODE_TARGET; + memcpy(&eval->val[2], node_id, sizeof(*node_id)); + eval->val[6] = ECOMMUNITY_NODE_TARGET_RESERVED; + eval->val[7] = ECOMMUNITY_NODE_TARGET_RESERVED; +} + extern void ecommunity_init(void); extern void ecommunity_finish(void); extern void ecommunity_free(struct ecommunity **); @@ -338,4 +362,9 @@ static inline void ecommunity_strip_rts(struct ecommunity *ecom) extern struct ecommunity * ecommunity_add_origin_validation_state(enum rpki_states rpki_state, struct ecommunity *ecom); +extern struct ecommunity *ecommunity_add_node_target(struct in_addr *node_id, + struct ecommunity *old, + bool non_trans); +extern bool ecommunity_node_target_match(struct ecommunity *ecomm, + struct in_addr *local_id); #endif /* _QUAGGA_BGP_ECOMMUNITY_H */ |