diff options
| -rw-r--r-- | proto/bgp/attrs.c | 58 | ||||
| -rw-r--r-- | proto/bgp/bgp.h | 1 | ||||
| -rw-r--r-- | proto/bgp/config.Y | 4 |
3 files changed, 62 insertions, 1 deletions
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c index 4710bfba..dec58cbd 100644 --- a/proto/bgp/attrs.c +++ b/proto/bgp/attrs.c @@ -863,6 +863,54 @@ bgp_decode_large_community(struct bgp_parse_state *s, uint code UNUSED, uint fla } static void +bgp_export_tunnel_encap(struct bgp_export_state *s, eattr *a) +{ + REPORT("bgp_export_tunnel_encap"); + if (a->u.ptr->length == 0) + UNSET(a); + + // a->u.ptr = lc_set_sort(s->pool, a->u.ptr); +} + +static void +bgp_decode_tunnel_encap(struct bgp_parse_state *s, uint code UNUSED, uint flags, byte *data, uint len, ea_list **to) +{ + REPORT("bgp_decode_tunnel_encap %d", len); + bgp_set_attr_data(to, s->pool, BA_TUNNEL_ENCAP, flags, data, len); +} + +static int +bgp_encode_tunnel_encap(struct bgp_write_state *s UNUSED, eattr *a, byte *buf, uint size) +{ + REPORT("bgp_encode_tunnel_encap %d", size); + return bgp_put_attr(buf, size, EA_ID(a->id), a->flags, a->u.ptr->data, a->u.ptr->length); +} + +static void +bgp_format_tunnel_encap(eattr *a, byte *buf, uint size) +{ + char *pos = buf; + + if (a->u.ptr->length == 0) + { + bsprintf(pos, ""); + return; + } + + for (uint i = 0; i < a->u.ptr->length; i++) + { + if (size < 4) + { + bsprintf(pos, "..."); + return; + } + + uint l = bsprintf(pos, "%02x ", a->u.ptr->data[i]); + ADVANCE(pos, size, l); + } +} + +static void bgp_export_mpls_label_stack(struct bgp_export_state *s, eattr *a) { net_addr *n = s->route->net->n.addr; @@ -934,6 +982,7 @@ bgp_format_mpls_label_stack(const eattr *a, byte *buf, uint size) static inline void bgp_decode_unknown(struct bgp_parse_state *s, uint code, uint flags, byte *data, uint len, ea_list **to) { + REPORT("unknown %x %x", code, flags); /* Cannot use bgp_set_attr_data() as it works on known attributes only */ ea_set_attr_data(to, s->pool, EA_CODE(PROTOCOL_BGP, code), flags, EAF_TYPE_OPAQUE, data, len); } @@ -1075,6 +1124,15 @@ static const struct bgp_attr_desc bgp_attr_table[] = { .encode = bgp_encode_u32s, .decode = bgp_decode_large_community, }, + [BA_TUNNEL_ENCAP] = { + .name = "tunnel_encap", + .type = EAF_TYPE_TUNNEL_ENCAP, + .flags = BAF_OPTIONAL | BAF_TRANSITIVE, + .export = bgp_export_tunnel_encap, + .encode = bgp_encode_tunnel_encap, + .decode = bgp_decode_tunnel_encap, + .format = bgp_format_tunnel_encap, + }, [BA_MPLS_LABEL_STACK] = { .name = "mpls_label_stack", .type = EAF_TYPE_INT_SET, diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h index 455f04f9..8b4401f4 100644 --- a/proto/bgp/bgp.h +++ b/proto/bgp/bgp.h @@ -649,6 +649,7 @@ void bgp_update_next_hop(struct bgp_export_state *s, eattr *a, ea_list **to); #define BA_EXT_COMMUNITY 0x10 /* RFC 4360 */ #define BA_AS4_PATH 0x11 /* RFC 6793 */ #define BA_AS4_AGGREGATOR 0x12 /* RFC 6793 */ +#define BA_TUNNEL_ENCAP 0x17 /* draft-ietf-idr-tunnel-encaps */ #define BA_AIGP 0x1a /* RFC 7311 */ #define BA_LARGE_COMMUNITY 0x20 /* RFC 8092 */ diff --git a/proto/bgp/config.Y b/proto/bgp/config.Y index 7279560b..8f1e06a0 100644 --- a/proto/bgp/config.Y +++ b/proto/bgp/config.Y @@ -31,7 +31,7 @@ CF_KEYWORDS(BGP, LOCAL, NEIGHBOR, AS, HOLD, TIME, CONNECT, RETRY, KEEPALIVE, STRICT, BIND, CONFEDERATION, MEMBER, MULTICAST, FLOW4, FLOW6, LONG, LIVED, STALE, IMPORT, IBGP, EBGP, MANDATORY, INTERNAL, EXTERNAL, SETS, DYNAMIC, RANGE, NAME, DIGITS, BGP_AIGP, AIGP, ORIGINATE, COST, ENFORCE, - FIRST) + FIRST, BGP_TUNNEL_ENCAP) %type <i> bgp_nh %type <i32> bgp_afi @@ -324,6 +324,8 @@ dynamic_attr: BGP_AIGP { $$ = f_new_dynamic_attr(EAF_TYPE_OPAQUE, T_ENUM_EMPTY, EA_CODE(PROTOCOL_BGP, BA_AIGP)); } ; dynamic_attr: BGP_LARGE_COMMUNITY { $$ = f_new_dynamic_attr(EAF_TYPE_LC_SET, T_LCLIST, EA_CODE(PROTOCOL_BGP, BA_LARGE_COMMUNITY)); } ; +dynamic_attr: BGP_TUNNEL_ENCAP + { $$ = f_new_dynamic_attr(EAF_TYPE_TUNNEL_ENCAP, T_TLV, EA_CODE(PROTOCOL_BGP, BA_TUNNEL_ENCAP)); } ; |