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-rw-r--r--proto/bgp/bgp.h101
1 files changed, 44 insertions, 57 deletions
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index c79dd1b2..662d9d48 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -14,13 +14,12 @@
#include <stdint.h>
#include <setjmp.h>
#include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
#include "nest/bfd.h"
//#include "lib/lists.h"
#include "lib/hash.h"
#include "lib/socket.h"
-struct linpool;
struct eattr;
@@ -86,6 +85,7 @@ struct bgp_config {
int peer_type; /* Internal or external BGP (BGP_PT_*, optional) */
int multihop; /* Number of hops if multihop */
int strict_bind; /* Bind listening socket to local address */
+ int free_bind; /* Bind listening socket with SKF_FREEBIND */
int ttl_security; /* Enable TTL security [RFC 5082] */
int compare_path_lengths; /* Use path lengths when selecting best route */
int med_metric; /* Compare MULTI_EXIT_DISC even between routes from differen ASes */
@@ -146,6 +146,7 @@ struct bgp_channel_config {
u8 mandatory; /* Channel is mandatory in capability negotiation */
u8 gw_mode; /* How we compute route gateway from next_hop attr, see GW_* */
u8 secondary; /* Accept also non-best routes (i.e. RA_ACCEPTED) */
+ u8 validate; /* Validate Flowspec per RFC 8955 (6) */
u8 gr_able; /* Allow full graceful restart for the channel */
u8 llgr_able; /* Allow full long-lived GR for the channel */
uint llgr_time; /* Long-lived graceful restart stale time */
@@ -159,6 +160,7 @@ struct bgp_channel_config {
struct rtable_config *igp_table_ip4; /* Table for recursive IPv4 next hop lookups */
struct rtable_config *igp_table_ip6; /* Table for recursive IPv6 next hop lookups */
+ struct rtable_config *base_table; /* Base table for Flowspec validation */
};
#define BGP_PT_INTERNAL 1
@@ -344,6 +346,7 @@ struct bgp_channel {
rtable *igp_table_ip4; /* Table for recursive IPv4 next hop lookups */
rtable *igp_table_ip6; /* Table for recursive IPv6 next hop lookups */
+ rtable *base_table; /* Base table for Flowspec validation */
/* Rest are zeroed when down */
pool *pool;
@@ -400,7 +403,7 @@ struct bgp_export_state {
int mpls;
u32 attrs_seen[1];
- uint err_withdraw;
+ uint err_reject;
uint local_next_hop;
};
@@ -426,6 +429,7 @@ struct bgp_parse_state {
int as4_session;
int add_path;
int mpls;
+ int reach_nlri_step;
u32 attrs_seen[256/32];
@@ -452,7 +456,6 @@ struct bgp_parse_state {
uint err_subcode;
jmp_buf err_jmpbuf;
- struct hostentry *hostentry;
adata *mpls_labels;
/* Cached state for bgp_rte_update() */
@@ -493,9 +496,6 @@ bgp_parse_error(struct bgp_parse_state *s, uint subcode)
longjmp(s->err_jmpbuf, 1);
}
-extern struct linpool *bgp_linpool;
-extern struct linpool *bgp_linpool2;
-
void bgp_start_timer(timer *t, uint value);
void bgp_check_config(struct bgp_config *c);
@@ -519,7 +519,9 @@ struct rte_source *bgp_get_source(struct bgp_proto *p, u32 path_id);
static inline int
rta_resolvable(rta *a)
{
- return a->dest == RTD_UNICAST;
+ eattr *nhea = ea_find(a->eattrs, &ea_gen_nexthop);
+ struct nexthop_adata *nhad = (void *) nhea->u.ptr;
+ return NEXTHOP_IS_REACHABLE(nhad) || (nhad->dest != RTD_UNREACHABLE);
}
@@ -537,34 +539,13 @@ rta_resolvable(rta *a)
/* attrs.c */
-static inline eattr *
-bgp_find_attr(ea_list *attrs, uint code)
-{
- return ea_find(attrs, EA_CODE(PROTOCOL_BGP, code));
-}
-
eattr *
-bgp_set_attr(ea_list **attrs, struct linpool *pool, uint code, uint flags, uintptr_t val);
+bgp_find_attr(ea_list *attrs, uint code);
-static inline void
-bgp_set_attr_u32(ea_list **to, struct linpool *pool, uint code, uint flags, u32 val)
-{ bgp_set_attr(to, pool, code, flags, (uintptr_t) val); }
-
-static inline void
-bgp_set_attr_ptr(ea_list **to, struct linpool *pool, uint code, uint flags, const struct adata *val)
-{ bgp_set_attr(to, pool, code, flags, (uintptr_t) val); }
-
-static inline void
-bgp_set_attr_data(ea_list **to, struct linpool *pool, uint code, uint flags, void *data, uint len)
-{
- struct adata *a = lp_alloc_adata(pool, len);
- bmemcpy(a->data, data, len);
- bgp_set_attr(to, pool, code, flags, (uintptr_t) a);
-}
-
-static inline void
-bgp_unset_attr(ea_list **to, struct linpool *pool, uint code)
-{ eattr *e = bgp_set_attr(to, pool, code, 0, 0); e->type = EAF_TYPE_UNDEF; }
+void bgp_set_attr_u32(ea_list **to, uint code, uint flags, u32 val);
+void bgp_set_attr_ptr(ea_list **to, uint code, uint flags, const struct adata *ad);
+void bgp_set_attr_data(ea_list **to, uint code, uint flags, void *data, uint len);
+void bgp_unset_attr(ea_list **to, uint code);
int bgp_encode_mp_reach_mrt(struct bgp_write_state *s, eattr *a, byte *buf, uint size);
@@ -586,26 +567,27 @@ int bgp_rte_better(struct rte *, struct rte *);
int bgp_rte_mergable(rte *pri, rte *sec);
int bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best);
struct rte *bgp_rte_modify_stale(struct rte *r, struct linpool *pool);
-u32 bgp_rte_igp_metric(struct rte *);
+u32 bgp_rte_igp_metric(const rte *);
void bgp_rt_notify(struct proto *P, struct channel *C, const net_addr *n, rte *new, const rte *old);
int bgp_preexport(struct channel *, struct rte *);
-int bgp_get_attr(const struct eattr *e, byte *buf, int buflen);
void bgp_get_route_info(struct rte *, byte *);
-int bgp_total_aigp_metric_(rta *a, u64 *metric, const struct adata **ad);
+int bgp_total_aigp_metric_(const rte *e, u64 *metric, const struct adata **ad);
#define BGP_AIGP_METRIC 1
#define BGP_AIGP_MAX U64(0xffffffffffffffff)
static inline u64
-bgp_total_aigp_metric(rta *a)
+bgp_total_aigp_metric(const rte *e)
{
u64 metric = BGP_AIGP_MAX;
const struct adata *ad;
- bgp_total_aigp_metric_(a, &metric, &ad);
+ bgp_total_aigp_metric_(e, &metric, &ad);
return metric;
}
+void bgp_register_attrs(void);
+
/* packets.c */
@@ -642,26 +624,31 @@ void bgp_update_next_hop(struct bgp_export_state *s, eattr *a, ea_list **to);
#define BAF_DECODE_FLAGS 0x0100 /* Private flag - attribute flags are handled by the decode hook */
-#define BA_ORIGIN 0x01 /* RFC 4271 */ /* WM */
-#define BA_AS_PATH 0x02 /* WM */
-#define BA_NEXT_HOP 0x03 /* WM */
-#define BA_MULTI_EXIT_DISC 0x04 /* ON */
-#define BA_LOCAL_PREF 0x05 /* WD */
-#define BA_ATOMIC_AGGR 0x06 /* WD */
-#define BA_AGGREGATOR 0x07 /* OT */
-#define BA_COMMUNITY 0x08 /* RFC 1997 */ /* OT */
-#define BA_ORIGINATOR_ID 0x09 /* RFC 4456 */ /* ON */
-#define BA_CLUSTER_LIST 0x0a /* RFC 4456 */ /* ON */
-#define BA_MP_REACH_NLRI 0x0e /* RFC 4760 */
-#define BA_MP_UNREACH_NLRI 0x0f /* RFC 4760 */
-#define BA_EXT_COMMUNITY 0x10 /* RFC 4360 */
-#define BA_AS4_PATH 0x11 /* RFC 6793 */
-#define BA_AS4_AGGREGATOR 0x12 /* RFC 6793 */
-#define BA_AIGP 0x1a /* RFC 7311 */
-#define BA_LARGE_COMMUNITY 0x20 /* RFC 8092 */
+enum bgp_attr_id {
+ BA_ORIGIN = 0x01, /* RFC 4271 */ /* WM */
+ BA_AS_PATH = 0x02, /* WM */
+ BA_NEXT_HOP = 0x03, /* WM */
+ BA_MULTI_EXIT_DISC = 0x04, /* ON */
+ BA_LOCAL_PREF = 0x05, /* WD */
+ BA_ATOMIC_AGGR = 0x06, /* WD */
+ BA_AGGREGATOR = 0x07, /* OT */
+ BA_COMMUNITY = 0x08, /* RFC 1997 */ /* OT */
+ BA_ORIGINATOR_ID = 0x09, /* RFC 4456 */ /* ON */
+ BA_CLUSTER_LIST = 0x0a, /* RFC 4456 */ /* ON */
+ BA_MP_REACH_NLRI = 0x0e, /* RFC 4760 */
+ BA_MP_UNREACH_NLRI = 0x0f, /* RFC 4760 */
+ BA_EXT_COMMUNITY = 0x10, /* RFC 4360 */
+ BA_AS4_PATH = 0x11, /* RFC 6793 */
+ BA_AS4_AGGREGATOR = 0x12, /* RFC 6793 */
+ BA_AIGP = 0x1a, /* RFC 7311 */
+ BA_LARGE_COMMUNITY = 0x20, /* RFC 8092 */
/* Bird's private internal BGP attributes */
-#define BA_MPLS_LABEL_STACK 0xfe /* MPLS label stack transfer attribute */
+ BA_MPLS_LABEL_STACK = 0x100, /* MPLS label stack transfer attribute */
+
+/* Maximum */
+ BGP_ATTR_MAX,
+};
/* BGP connection states */
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-08 18:45:58 +0000