diff options
| author | Eugene Bogomazov <eb@qrator.net> | 2022-07-11 17:19:34 +0200 |
|---|---|---|
| committer | Ondrej Zajicek <santiago@crfreenet.org> | 2022-07-11 17:25:54 +0200 |
| commit | c73b5d2d3d94204d2a81d93efd02c4c115859353 (patch) | |
| tree | bf1e351517975543730967b68df0c2d34e70578e /proto/bgp/bgp.h | |
| parent | cb339a30677901f2c248de08ff535cf0a9efab3d (diff) | |
BGP: Implement BGP roles
Implement BGP roles as described in RFC 9234. It is a mechanism for
route leak prevention and automatic route filtering based on common BGP
topology relationships. It defines role capability (controlled by 'local
role' option) and OTC route attribute, which is used for automatic route
filtering and leak detection.
Minor changes done by commiter.
Diffstat (limited to 'proto/bgp/bgp.h')
| -rw-r--r-- | proto/bgp/bgp.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h index 7cd1c27d..fea87304 100644 --- a/proto/bgp/bgp.h +++ b/proto/bgp/bgp.h @@ -114,6 +114,8 @@ struct bgp_config { int gr_mode; /* Graceful restart mode (BGP_GR_*) */ int llgr_mode; /* Long-lived graceful restart mode (BGP_LLGR_*) */ int setkey; /* Set MD5 password to system SA/SP database */ + u8 local_role; /* Set peering role with neighbor [RFC 9234] */ + int require_roles; /* Require configured roles on both sides */ /* Times below are in seconds */ unsigned gr_time; /* Graceful restart timeout */ unsigned llgr_time; /* Long-lived graceful restart stale time */ @@ -167,6 +169,13 @@ struct bgp_channel_config { #define BGP_PT_INTERNAL 1 #define BGP_PT_EXTERNAL 2 +#define BGP_ROLE_UNDEFINED 255 +#define BGP_ROLE_PROVIDER 0 +#define BGP_ROLE_RS_SERVER 1 +#define BGP_ROLE_RS_CLIENT 2 +#define BGP_ROLE_CUSTOMER 3 +#define BGP_ROLE_PEER 4 + #define NH_NO 0 #define NH_ALL 1 #define NH_IBGP 2 @@ -223,6 +232,7 @@ struct bgp_caps { u8 ext_messages; /* Extended message length, RFC draft */ u8 route_refresh; /* Route refresh capability, RFC 2918 */ u8 enhanced_refresh; /* Enhanced route refresh, RFC 7313 */ + u8 role; /* BGP role capability, RFC 9234 */ u8 gr_aware; /* Graceful restart capability, RFC 4724 */ u8 gr_flags; /* Graceful restart flags */ @@ -485,6 +495,12 @@ static inline int bgp_cc_is_ipv4(struct bgp_channel_config *c) static inline int bgp_cc_is_ipv6(struct bgp_channel_config *c) { return BGP_AFI(c->afi) == BGP_AFI_IPV6; } +static inline int bgp_channel_is_role_applicable(struct bgp_channel *c) +{ return (c->afi == BGP_AF_IPV4 || c->afi == BGP_AF_IPV6); } + +static inline int bgp_cc_is_role_applicable(struct bgp_channel_config *c) +{ return (c->afi == BGP_AF_IPV4 || c->afi == BGP_AF_IPV6); } + static inline uint bgp_max_packet_length(struct bgp_conn *conn) { return conn->ext_messages ? BGP_MAX_EXT_MSG_LENGTH : BGP_MAX_MESSAGE_LENGTH; } @@ -660,6 +676,7 @@ void bgp_update_next_hop(struct bgp_export_state *s, eattr *a, ea_list **to); #define BA_AS4_AGGREGATOR 0x12 /* RFC 6793 */ #define BA_AIGP 0x1a /* RFC 7311 */ #define BA_LARGE_COMMUNITY 0x20 /* RFC 8092 */ +#define BA_ONLY_TO_CUSTOMER 0x23 /* RFC 9234 */ /* Bird's private internal BGP attributes */ #define BA_MPLS_LABEL_STACK 0xfe /* MPLS label stack transfer attribute */ |