diff options
43 files changed, 378 insertions, 361 deletions
diff --git a/conf/cf-lex.l b/conf/cf-lex.l index b9457a83..75e1ceeb 100644 --- a/conf/cf-lex.l +++ b/conf/cf-lex.l @@ -42,7 +42,7 @@ #define PARSER 1 #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "filter/filter.h" #include "filter/f-inst.h" diff --git a/conf/conf.c b/conf/conf.c index a2b01667..0230053b 100644 --- a/conf/conf.c +++ b/conf/conf.c @@ -46,7 +46,7 @@ #undef LOCAL_DEBUG #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "lib/resource.h" diff --git a/conf/confbase.Y b/conf/confbase.Y index 753df325..3fdacb12 100644 --- a/conf/confbase.Y +++ b/conf/confbase.Y @@ -18,7 +18,7 @@ CF_HDR #include "lib/string.h" #include "nest/protocol.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/bfd.h" #include "nest/cli.h" #include "filter/filter.h" diff --git a/filter/data.c b/filter/data.c index feb8c8bb..87ef4ff1 100644 --- a/filter/data.c +++ b/filter/data.c @@ -16,7 +16,7 @@ #include "lib/unaligned.h" #include "lib/net.h" #include "lib/ip.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "nest/attrs.h" diff --git a/filter/f-util.c b/filter/f-util.c index 79cf3452..83ae01f6 100644 --- a/filter/f-util.c +++ b/filter/f-util.c @@ -13,7 +13,7 @@ #include "filter/f-inst.h" #include "lib/idm.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #define P(a,b) ((a<<8) | b) diff --git a/filter/filter.c b/filter/filter.c index 7004b96d..31ae79fe 100644 --- a/filter/filter.c +++ b/filter/filter.c @@ -35,7 +35,7 @@ #include "lib/ip.h" #include "lib/net.h" #include "lib/flowspec.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "nest/attrs.h" diff --git a/filter/filter.h b/filter/filter.h index e9c9d917..8ce6c1e0 100644 --- a/filter/filter.h +++ b/filter/filter.h @@ -13,7 +13,7 @@ #include "lib/resource.h" #include "lib/ip.h" #include "lib/macro.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/attrs.h" /* Possible return values of filter execution */ diff --git a/lib/event_test.c b/lib/event_test.c index e1fbea8f..e14d0b95 100644 --- a/lib/event_test.c +++ b/lib/event_test.c @@ -15,7 +15,7 @@ #include "nest/locks.h" #include "sysdep/unix/unix.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #define MAX_NUM 4 diff --git a/lib/route.h b/lib/route.h new file mode 100644 index 00000000..47355abc --- /dev/null +++ b/lib/route.h @@ -0,0 +1,332 @@ +/* + * BIRD Internet Routing Daemon -- Routing data structures + * + * (c) 1998--2000 Martin Mares <mj@ucw.cz> + * (c) 2022 Maria Matejka <mq@jmq.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_LIB_ROUTE_H_ +#define _BIRD_LIB_ROUTE_H_ + +struct network; +struct proto; +struct cli; + +typedef struct rte { + struct rte *next; + struct network *net; /* Network this RTE belongs to */ + struct rte_src *src; /* Route source that created the route */ + struct channel *sender; /* Channel used to send the route to the routing table */ + struct rta *attrs; /* Attributes of this route */ + u32 id; /* Table specific route id */ + byte flags; /* Flags (REF_...) */ + byte pflags; /* Protocol-specific flags */ + btime lastmod; /* Last modified */ +} rte; + +#define REF_COW 1 /* Copy this rte on write */ +#define REF_FILTERED 2 /* Route is rejected by import filter */ +#define REF_STALE 4 /* Route is stale in a refresh cycle */ +#define REF_DISCARD 8 /* Route is scheduled for discard */ +#define REF_MODIFY 16 /* Route is scheduled for modify */ + +/* Route is valid for propagation (may depend on other flags in the future), accepts NULL */ +static inline int rte_is_valid(rte *r) { return r && !(r->flags & REF_FILTERED); } + +/* Route just has REF_FILTERED flag */ +static inline int rte_is_filtered(rte *r) { return !!(r->flags & REF_FILTERED); } + +struct rte_src { + struct rte_src *next; /* Hash chain */ + struct proto *proto; /* Protocol the source is based on */ + u32 private_id; /* Private ID, assigned by the protocol */ + u32 global_id; /* Globally unique ID of the source */ + unsigned uc; /* Use count */ +}; + + +struct rte_src *rt_find_source(struct proto *p, u32 id); +struct rte_src *rt_get_source(struct proto *p, u32 id); +static inline void rt_lock_source(struct rte_src *src) { src->uc++; } +static inline void rt_unlock_source(struct rte_src *src) { src->uc--; } +void rt_prune_sources(void); + +/* + * Route Attributes + * + * Beware: All standard BGP attributes must be represented here instead + * of making them local to the route. This is needed to ensure proper + * construction of BGP route attribute lists. + */ + +/* Nexthop structure */ +struct nexthop { + ip_addr gw; /* Next hop */ + struct iface *iface; /* Outgoing interface */ + struct nexthop *next; + byte flags; + byte weight; + byte labels_orig; /* Number of labels before hostentry was applied */ + byte labels; /* Number of all labels */ + u32 label[0]; +}; + +#define RNF_ONLINK 0x1 /* Gateway is onlink regardless of IP ranges */ + + +typedef struct rta { + struct rta *next, **pprev; /* Hash chain */ + u32 uc; /* Use count */ + u32 hash_key; /* Hash over important fields */ + struct ea_list *eattrs; /* Extended Attribute chain */ + struct hostentry *hostentry; /* Hostentry for recursive next-hops */ + ip_addr from; /* Advertising router */ + u32 igp_metric; /* IGP metric to next hop (for iBGP routes) */ + u16 cached:1; /* Are attributes cached? */ + u16 source:7; /* Route source (RTS_...) */ + u16 scope:4; /* Route scope (SCOPE_... -- see ip.h) */ + u16 dest:4; /* Route destination type (RTD_...) */ + word pref; + struct nexthop nh; /* Next hop */ +} rta; + +#define RTS_STATIC 1 /* Normal static route */ +#define RTS_INHERIT 2 /* Route inherited from kernel */ +#define RTS_DEVICE 3 /* Device route */ +#define RTS_STATIC_DEVICE 4 /* Static device route */ +#define RTS_REDIRECT 5 /* Learned via redirect */ +#define RTS_RIP 6 /* RIP route */ +#define RTS_OSPF 7 /* OSPF route */ +#define RTS_OSPF_IA 8 /* OSPF inter-area route */ +#define RTS_OSPF_EXT1 9 /* OSPF external route type 1 */ +#define RTS_OSPF_EXT2 10 /* OSPF external route type 2 */ +#define RTS_BGP 11 /* BGP route */ +#define RTS_PIPE 12 /* Inter-table wormhole */ +#define RTS_BABEL 13 /* Babel route */ +#define RTS_RPKI 14 /* Route Origin Authorization */ +#define RTS_PERF 15 /* Perf checker */ +#define RTS_MAX 16 + +#define RTD_NONE 0 /* Undefined next hop */ +#define RTD_UNICAST 1 /* Next hop is neighbor router */ +#define RTD_BLACKHOLE 2 /* Silently drop packets */ +#define RTD_UNREACHABLE 3 /* Reject as unreachable */ +#define RTD_PROHIBIT 4 /* Administratively prohibited */ +#define RTD_MAX 5 + +#define IGP_METRIC_UNKNOWN 0x80000000 /* Default igp_metric used when no other + protocol-specific metric is availabe */ + + +extern const char * rta_dest_names[RTD_MAX]; + +static inline const char *rta_dest_name(uint n) +{ return (n < RTD_MAX) ? rta_dest_names[n] : "???"; } + +/* Route has regular, reachable nexthop (i.e. not RTD_UNREACHABLE and like) */ +static inline int rte_is_reachable(rte *r) +{ return r->attrs->dest == RTD_UNICAST; } + + +/* + * Extended Route Attributes + */ + +typedef struct eattr { + word id; /* EA_CODE(PROTOCOL_..., protocol-dependent ID) */ + byte flags; /* Protocol-dependent flags */ + byte type:5; /* Attribute type */ + byte originated:1; /* The attribute has originated locally */ + byte fresh:1; /* An uncached attribute (e.g. modified in export filter) */ + byte undef:1; /* Explicitly undefined */ + + union bval u; +} eattr; + + +#define EA_CODE(proto,id) (((proto) << 8) | (id)) +#define EA_ID(ea) ((ea) & 0xff) +#define EA_PROTO(ea) ((ea) >> 8) +#define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT) +#define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT) +#define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT) + +const char *ea_custom_name(uint ea); + +#define EA_GEN_IGP_METRIC EA_CODE(PROTOCOL_NONE, 0) + +#define EA_CODE_MASK 0xffff +#define EA_CUSTOM_BIT 0x8000 +#define EA_ALLOW_UNDEF 0x10000 /* ea_find: allow EAF_TYPE_UNDEF */ +#define EA_BIT(n) ((n) << 24) /* Used in bitfield accessors */ +#define EA_BIT_GET(ea) ((ea) >> 24) + +typedef struct adata { + uint length; /* Length of data */ + byte data[0]; +} adata; + +extern const adata null_adata; /* adata of length 0 */ + +static inline struct adata * +lp_alloc_adata(struct linpool *pool, uint len) +{ + struct adata *ad = lp_alloc(pool, sizeof(struct adata) + len); + ad->length = len; + return ad; +} + +static inline int adata_same(const struct adata *a, const struct adata *b) +{ return (a->length == b->length && !memcmp(a->data, b->data, a->length)); } + + +typedef struct ea_list { + struct ea_list *next; /* In case we have an override list */ + byte flags; /* Flags: EALF_... */ + byte rfu; + word count; /* Number of attributes */ + eattr attrs[0]; /* Attribute definitions themselves */ +} ea_list; + +#define EALF_SORTED 1 /* Attributes are sorted by code */ +#define EALF_BISECT 2 /* Use interval bisection for searching */ +#define EALF_CACHED 4 /* Attributes belonging to cached rta */ + +struct ea_walk_state { + ea_list *eattrs; /* Ccurrent ea_list, initially set by caller */ + eattr *ea; /* Current eattr, initially NULL */ + u32 visited[4]; /* Bitfield, limiting max to 128 */ +}; + +eattr *ea_find(ea_list *, unsigned ea); +eattr *ea_walk(struct ea_walk_state *s, uint id, uint max); + +/** + * ea_get_int - fetch an integer attribute + * @e: attribute list + * @id: attribute ID + * @def: default value + * + * This function is a shortcut for retrieving a value of an integer attribute + * by calling ea_find() to find the attribute, extracting its value or returning + * a provided default if no such attribute is present. + */ +static inline u32 +ea_get_int(ea_list *e, unsigned id, u32 def) +{ + eattr *a = ea_find(e, id); + return a ? a->u.data : def; +} + +void ea_dump(ea_list *); +void ea_sort(ea_list *); /* Sort entries in all sub-lists */ +unsigned ea_scan(ea_list *); /* How many bytes do we need for merged ea_list */ +void ea_merge(ea_list *from, ea_list *to); /* Merge sub-lists to allocated buffer */ +int ea_same(ea_list *x, ea_list *y); /* Test whether two ea_lists are identical */ +uint ea_hash(ea_list *e); /* Calculate 16-bit hash value */ +ea_list *ea_append(ea_list *to, ea_list *what); +void ea_format_bitfield(const struct eattr *a, byte *buf, int bufsize, const char **names, int min, int max); + +#define ea_normalize(ea) do { \ + if (ea->next) { \ + ea_list *t = alloca(ea_scan(ea)); \ + ea_merge(ea, t); \ + ea = t; \ + } \ + ea_sort(ea); \ + if (ea->count == 0) \ + ea = NULL; \ +} while(0) \ + +struct ea_one_attr_list { + ea_list l; + eattr a; +}; + +static inline eattr * +ea_set_attr(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, union bval val) +{ + struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea)); + *ea = (struct ea_one_attr_list) { + .l.flags = EALF_SORTED, + .l.count = 1, + .l.next = *to, + + .a.id = id, + .a.type = type, + .a.flags = flags, + }; + + ea->a.u = val; + *to = &ea->l; + + return &ea->a; +} + +static inline void +ea_unset_attr(ea_list **to, struct linpool *pool, _Bool local, uint code) +{ + struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea)); + *ea = (struct ea_one_attr_list) { + .l.flags = EALF_SORTED, + .l.count = 1, + .l.next = *to, + .a.id = code, + .a.fresh = local, + .a.originated = local, + .a.undef = 1, + }; + + *to = &ea->l; +} + +static inline void +ea_set_attr_u32(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, u32 data) +{ + union bval bv = { .data = data }; + ea_set_attr(to, pool, id, flags, type, bv); +} + +static inline void +ea_set_attr_data(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, void *data, uint len) +{ + struct adata *a = lp_alloc_adata(pool, len); + memcpy(a->data, data, len); + union bval bv = { .ptr = a, }; + ea_set_attr(to, pool, id, flags, type, bv); +} + + +#define NEXTHOP_MAX_SIZE (sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK) + +static inline size_t nexthop_size(const struct nexthop *nh) +{ return sizeof(struct nexthop) + sizeof(u32)*nh->labels; } +int nexthop__same(struct nexthop *x, struct nexthop *y); /* Compare multipath nexthops */ +static inline int nexthop_same(struct nexthop *x, struct nexthop *y) +{ return (x == y) || nexthop__same(x, y); } +struct nexthop *nexthop_merge(struct nexthop *x, struct nexthop *y, int rx, int ry, int max, linpool *lp); +struct nexthop *nexthop_sort(struct nexthop *x); +static inline void nexthop_link(struct rta *a, struct nexthop *from) +{ memcpy(&a->nh, from, nexthop_size(from)); } +void nexthop_insert(struct nexthop **n, struct nexthop *y); +int nexthop_is_sorted(struct nexthop *x); + +void rta_init(void); +static inline size_t rta_size(const rta *a) { return sizeof(rta) + sizeof(u32)*a->nh.labels; } +#define RTA_MAX_SIZE (sizeof(rta) + sizeof(u32)*MPLS_MAX_LABEL_STACK) +rta *rta_lookup(rta *); /* Get rta equivalent to this one, uc++ */ +static inline int rta_is_cached(rta *r) { return r->cached; } +static inline rta *rta_clone(rta *r) { r->uc++; return r; } +void rta__free(rta *r); +static inline void rta_free(rta *r) { if (r && !--r->uc) rta__free(r); } +rta *rta_do_cow(rta *o, linpool *lp); +static inline rta * rta_cow(rta *r, linpool *lp) { return rta_is_cached(r) ? rta_do_cow(r, lp) : r; } +void rta_dump(rta *); +void rta_dump_all(void); +void rta_show(struct cli *, rta *); + +u32 rt_get_igp_metric(rte *rt); + +#endif diff --git a/nest/a-path.c b/nest/a-path.c index badbc911..64504c93 100644 --- a/nest/a-path.c +++ b/nest/a-path.c @@ -8,7 +8,7 @@ */ #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/attrs.h" #include "lib/resource.h" #include "lib/unaligned.h" diff --git a/nest/a-path_test.c b/nest/a-path_test.c index e007a450..a6b4d3d8 100644 --- a/nest/a-path_test.c +++ b/nest/a-path_test.c @@ -9,7 +9,7 @@ #include "test/birdtest.h" #include "test/bt-utils.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/attrs.h" #include "lib/resource.h" diff --git a/nest/a-set.c b/nest/a-set.c index 71fbac94..93f6431e 100644 --- a/nest/a-set.c +++ b/nest/a-set.c @@ -10,7 +10,7 @@ #include <stdlib.h> #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/attrs.h" #include "lib/resource.h" #include "lib/string.h" diff --git a/nest/a-set_test.c b/nest/a-set_test.c index 904e6764..daa6ab74 100644 --- a/nest/a-set_test.c +++ b/nest/a-set_test.c @@ -10,7 +10,7 @@ #include "test/bt-utils.h" #include "lib/net.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/attrs.h" #include "lib/resource.h" diff --git a/nest/attrs.h b/nest/attrs.h index ef2b95e6..e0595846 100644 --- a/nest/attrs.h +++ b/nest/attrs.h @@ -11,7 +11,7 @@ #include <stdint.h> #include "lib/unaligned.h" -#include "nest/route.h" +#include "lib/route.h" /* a-path.c */ diff --git a/nest/cmds.c b/nest/cmds.c index 8481bf96..3e59cb6f 100644 --- a/nest/cmds.c +++ b/nest/cmds.c @@ -8,7 +8,7 @@ #include "nest/bird.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/cli.h" #include "conf/conf.h" #include "nest/cmds.h" diff --git a/nest/proto.c b/nest/proto.c index c6bda73b..95c319db 100644 --- a/nest/proto.c +++ b/nest/proto.c @@ -16,7 +16,7 @@ #include "lib/timer.h" #include "lib/string.h" #include "conf/conf.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/iface.h" #include "nest/cli.h" #include "filter/filter.h" diff --git a/nest/protocol.h b/nest/protocol.h index d0810a8f..7fb08992 100644 --- a/nest/protocol.h +++ b/nest/protocol.h @@ -12,7 +12,7 @@ #include "lib/lists.h" #include "lib/resource.h" #include "lib/event.h" -#include "nest/route.h" +#include "nest/rt.h" #include "conf/conf.h" struct iface; diff --git a/nest/rt-attr.c b/nest/rt-attr.c index de45dfa1..8f4319c5 100644 --- a/nest/rt-attr.c +++ b/nest/rt-attr.c @@ -45,7 +45,7 @@ */ #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "nest/cli.h" @@ -529,25 +529,6 @@ ea_walk(struct ea_walk_state *s, uint id, uint max) return NULL; } -/** - * ea_get_int - fetch an integer attribute - * @e: attribute list - * @id: attribute ID - * @def: default value - * - * This function is a shortcut for retrieving a value of an integer attribute - * by calling ea_find() to find the attribute, extracting its value or returning - * a provided default if no such attribute is present. - */ -u32 -ea_get_int(ea_list *e, unsigned id, u32 def) -{ - eattr *a = ea_find(e, id); - if (!a) - return def; - return a->u.data; -} - static inline void ea_do_sort(ea_list *e) { diff --git a/nest/rt-dev.c b/nest/rt-dev.c index 05e64fc3..82533321 100644 --- a/nest/rt-dev.c +++ b/nest/rt-dev.c @@ -18,7 +18,7 @@ #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/rt-dev.h" #include "conf/conf.h" #include "lib/resource.h" diff --git a/nest/rt-fib.c b/nest/rt-fib.c index 43e3039d..801561da 100644 --- a/nest/rt-fib.c +++ b/nest/rt-fib.c @@ -55,7 +55,7 @@ #undef LOCAL_DEBUG #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "lib/string.h" /* diff --git a/nest/rt-show.c b/nest/rt-show.c index 19877966..464e5f1b 100644 --- a/nest/rt-show.c +++ b/nest/rt-show.c @@ -10,7 +10,7 @@ #undef LOCAL_DEBUG #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/cli.h" #include "nest/iface.h" diff --git a/nest/rt-table.c b/nest/rt-table.c index fbfdb1e6..031e462b 100644 --- a/nest/rt-table.c +++ b/nest/rt-table.c @@ -91,7 +91,7 @@ #undef LOCAL_DEBUG #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "lib/resource.h" diff --git a/nest/route.h b/nest/rt.h index c6d30148..7451a261 100644 --- a/nest/route.h +++ b/nest/rt.h @@ -6,8 +6,8 @@ * Can be freely distributed and used under the terms of the GNU GPL. */ -#ifndef _BIRD_ROUTE_H_ -#define _BIRD_ROUTE_H_ +#ifndef _BIRD_NEST_RT_H_ +#define _BIRD_NEST_RT_H_ #include "lib/lists.h" #include "lib/bitmap.h" @@ -15,6 +15,7 @@ #include "lib/net.h" #include "lib/type.h" #include "lib/fib.h" +#include "lib/route.h" struct ea_list; struct protocol; @@ -148,31 +149,6 @@ struct hostentry { u32 igp_metric; /* Chosen route IGP metric */ }; -typedef struct rte { - struct rte *next; - net *net; /* Network this RTE belongs to */ - struct rte_src *src; /* Route source that created the route */ - struct channel *sender; /* Channel used to send the route to the routing table */ - struct rta *attrs; /* Attributes of this route */ - u32 id; /* Table specific route id */ - byte flags; /* Flags (REF_...) */ - byte pflags; /* Protocol-specific flags */ - btime lastmod; /* Last modified */ -} rte; - -#define REF_COW 1 /* Copy this rte on write */ -#define REF_FILTERED 2 /* Route is rejected by import filter */ -#define REF_STALE 4 /* Route is stale in a refresh cycle */ -#define REF_DISCARD 8 /* Route is scheduled for discard */ -#define REF_MODIFY 16 /* Route is scheduled for modify */ - -/* Route is valid for propagation (may depend on other flags in the future), accepts NULL */ -static inline int rte_is_valid(rte *r) { return r && !(r->flags & REF_FILTERED); } - -/* Route just has REF_FILTERED flag */ -static inline int rte_is_filtered(rte *r) { return !!(r->flags & REF_FILTERED); } - - /* Types of route announcement, also used as flags */ #define RA_UNDEF 0 /* Undefined RA type */ #define RA_OPTIMAL 1 /* Announcement of optimal route change */ @@ -209,7 +185,6 @@ static inline net *net_find_valid(rtable *tab, const net_addr *addr) static inline net *net_get(rtable *tab, const net_addr *addr) { return (net *) fib_get(&tab->fib, addr); } net *net_get(rtable *tab, const net_addr *addr); net *net_route(rtable *tab, const net_addr *n); -int net_roa_check(rtable *tab, const net_addr *n, u32 asn); rte *rte_find(net *net, struct rte_src *src); rte *rte_get_temp(struct rta *, struct rte_src *src); void rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src); @@ -305,279 +280,6 @@ struct rt_show_data_rtable * rt_show_add_table(struct rt_show_data *d, rtable *t #define RSEM_NOEXPORT 3 /* Routes rejected by export filter */ #define RSEM_EXPORTED 4 /* Routes marked in export map */ -/* - * Route Attributes - * - * Beware: All standard BGP attributes must be represented here instead - * of making them local to the route. This is needed to ensure proper - * construction of BGP route attribute lists. - */ - -/* Nexthop structure */ -struct nexthop { - ip_addr gw; /* Next hop */ - struct iface *iface; /* Outgoing interface */ - struct nexthop *next; - byte flags; - byte weight; - byte labels_orig; /* Number of labels before hostentry was applied */ - byte labels; /* Number of all labels */ - u32 label[0]; -}; - -#define RNF_ONLINK 0x1 /* Gateway is onlink regardless of IP ranges */ - - -struct rte_src { - struct rte_src *next; /* Hash chain */ - struct proto *proto; /* Protocol the source is based on */ - u32 private_id; /* Private ID, assigned by the protocol */ - u32 global_id; /* Globally unique ID of the source */ - unsigned uc; /* Use count */ -}; - - -typedef struct rta { - struct rta *next, **pprev; /* Hash chain */ - u32 uc; /* Use count */ - u32 hash_key; /* Hash over important fields */ - struct ea_list *eattrs; /* Extended Attribute chain */ - struct hostentry *hostentry; /* Hostentry for recursive next-hops */ - ip_addr from; /* Advertising router */ - u32 igp_metric; /* IGP metric to next hop (for iBGP routes) */ - u16 cached:1; /* Are attributes cached? */ - u16 source:7; /* Route source (RTS_...) */ - u16 scope:4; /* Route scope (SCOPE_... -- see ip.h) */ - u16 dest:4; /* Route destination type (RTD_...) */ - word pref; - struct nexthop nh; /* Next hop */ -} rta; - -#define RTS_STATIC 1 /* Normal static route */ -#define RTS_INHERIT 2 /* Route inherited from kernel */ -#define RTS_DEVICE 3 /* Device route */ -#define RTS_STATIC_DEVICE 4 /* Static device route */ -#define RTS_REDIRECT 5 /* Learned via redirect */ -#define RTS_RIP 6 /* RIP route */ -#define RTS_OSPF 7 /* OSPF route */ -#define RTS_OSPF_IA 8 /* OSPF inter-area route */ -#define RTS_OSPF_EXT1 9 /* OSPF external route type 1 */ -#define RTS_OSPF_EXT2 10 /* OSPF external route type 2 */ -#define RTS_BGP 11 /* BGP route */ -#define RTS_PIPE 12 /* Inter-table wormhole */ -#define RTS_BABEL 13 /* Babel route */ -#define RTS_RPKI 14 /* Route Origin Authorization */ -#define RTS_PERF 15 /* Perf checker */ -#define RTS_MAX 16 - -#define RTD_NONE 0 /* Undefined next hop */ -#define RTD_UNICAST 1 /* Next hop is neighbor router */ -#define RTD_BLACKHOLE 2 /* Silently drop packets */ -#define RTD_UNREACHABLE 3 /* Reject as unreachable */ -#define RTD_PROHIBIT 4 /* Administratively prohibited */ -#define RTD_MAX 5 - -#define IGP_METRIC_UNKNOWN 0x80000000 /* Default igp_metric used when no other - protocol-specific metric is availabe */ - - -extern const char * rta_dest_names[RTD_MAX]; - -static inline const char *rta_dest_name(uint n) -{ return (n < RTD_MAX) ? rta_dest_names[n] : "???"; } - -/* Route has regular, reachable nexthop (i.e. not RTD_UNREACHABLE and like) */ -static inline int rte_is_reachable(rte *r) -{ return r->attrs->dest == RTD_UNICAST; } - - -/* - * Extended Route Attributes - */ - -typedef struct eattr { - word id; /* EA_CODE(PROTOCOL_..., protocol-dependent ID) */ - byte flags; /* Protocol-dependent flags */ - byte type:5; /* Attribute type */ - byte originated:1; /* The attribute has originated locally */ - byte fresh:1; /* An uncached attribute (e.g. modified in export filter) */ - byte undef:1; /* Explicitly undefined */ - - union bval u; -} eattr; - - -#define EA_CODE(proto,id) (((proto) << 8) | (id)) -#define EA_ID(ea) ((ea) & 0xff) -#define EA_PROTO(ea) ((ea) >> 8) -#define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT) -#define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT) -#define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT) - -const char *ea_custom_name(uint ea); - -#define EA_GEN_IGP_METRIC EA_CODE(PROTOCOL_NONE, 0) - -#define EA_CODE_MASK 0xffff -#define EA_CUSTOM_BIT 0x8000 -#define EA_ALLOW_UNDEF 0x10000 /* ea_find: allow EAF_TYPE_UNDEF */ -#define EA_BIT(n) ((n) << 24) /* Used in bitfield accessors */ -#define EA_BIT_GET(ea) ((ea) >> 24) - -typedef struct adata { - uint length; /* Length of data */ - byte data[0]; -} adata; - -extern const adata null_adata; /* adata of length 0 */ - -static inline struct adata * -lp_alloc_adata(struct linpool *pool, uint len) -{ - struct adata *ad = lp_alloc(pool, sizeof(struct adata) + len); - ad->length = len; - return ad; -} - -static inline int adata_same(const struct adata *a, const struct adata *b) -{ return (a->length == b->length && !memcmp(a->data, b->data, a->length)); } - - -typedef struct ea_list { - struct ea_list *next; /* In case we have an override list */ - byte flags; /* Flags: EALF_... */ - byte rfu; - word count; /* Number of attributes */ - eattr attrs[0]; /* Attribute definitions themselves */ -} ea_list; - -#define EALF_SORTED 1 /* Attributes are sorted by code */ -#define EALF_BISECT 2 /* Use interval bisection for searching */ -#define EALF_CACHED 4 /* Attributes belonging to cached rta */ - -struct rte_src *rt_find_source(struct proto *p, u32 id); -struct rte_src *rt_get_source(struct proto *p, u32 id); -static inline void rt_lock_source(struct rte_src *src) { src->uc++; } -static inline void rt_unlock_source(struct rte_src *src) { src->uc--; } -void rt_prune_sources(void); - -struct ea_walk_state { - ea_list *eattrs; /* Ccurrent ea_list, initially set by caller */ - eattr *ea; /* Current eattr, initially NULL */ - u32 visited[4]; /* Bitfield, limiting max to 128 */ -}; - -eattr *ea_find(ea_list *, unsigned ea); -eattr *ea_walk(struct ea_walk_state *s, uint id, uint max); -u32 ea_get_int(ea_list *, unsigned ea, u32 def); -void ea_dump(ea_list *); -void ea_sort(ea_list *); /* Sort entries in all sub-lists */ -unsigned ea_scan(ea_list *); /* How many bytes do we need for merged ea_list */ -void ea_merge(ea_list *from, ea_list *to); /* Merge sub-lists to allocated buffer */ -int ea_same(ea_list *x, ea_list *y); /* Test whether two ea_lists are identical */ -uint ea_hash(ea_list *e); /* Calculate 16-bit hash value */ -ea_list *ea_append(ea_list *to, ea_list *what); -void ea_format_bitfield(const struct eattr *a, byte *buf, int bufsize, const char **names, int min, int max); - -#define ea_normalize(ea) do { \ - if (ea->next) { \ - ea_list *t = alloca(ea_scan(ea)); \ - ea_merge(ea, t); \ - ea = t; \ - } \ - ea_sort(ea); \ - if (ea->count == 0) \ - ea = NULL; \ -} while(0) \ - -struct ea_one_attr_list { - ea_list l; - eattr a; -}; - -static inline eattr * -ea_set_attr(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, union bval val) -{ - struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea)); - *ea = (struct ea_one_attr_list) { - .l.flags = EALF_SORTED, - .l.count = 1, - .l.next = *to, - - .a.id = id, - .a.type = type, - .a.flags = flags, - }; - - ea->a.u = val; - *to = &ea->l; - - return &ea->a; -} - -static inline void -ea_unset_attr(ea_list **to, struct linpool *pool, _Bool local, uint code) -{ - struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea)); - *ea = (struct ea_one_attr_list) { - .l.flags = EALF_SORTED, - .l.count = 1, - .l.next = *to, - .a.id = code, - .a.fresh = local, - .a.originated = local, - .a.undef = 1, - }; - - *to = &ea->l; -} - -static inline void -ea_set_attr_u32(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, u32 data) -{ - union bval bv = { .data = data }; - ea_set_attr(to, pool, id, flags, type, bv); -} - -static inline void -ea_set_attr_data(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, void *data, uint len) -{ - struct adata *a = lp_alloc_adata(pool, len); - memcpy(a->data, data, len); - union bval bv = { .ptr = a, }; - ea_set_attr(to, pool, id, flags, type, bv); -} - - -#define NEXTHOP_MAX_SIZE (sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK) - -static inline size_t nexthop_size(const struct nexthop *nh) -{ return sizeof(struct nexthop) + sizeof(u32)*nh->labels; } -int nexthop__same(struct nexthop *x, struct nexthop *y); /* Compare multipath nexthops */ -static inline int nexthop_same(struct nexthop *x, struct nexthop *y) -{ return (x == y) || nexthop__same(x, y); } -struct nexthop *nexthop_merge(struct nexthop *x, struct nexthop *y, int rx, int ry, int max, linpool *lp); -struct nexthop *nexthop_sort(struct nexthop *x); -static inline void nexthop_link(struct rta *a, struct nexthop *from) -{ memcpy(&a->nh, from, nexthop_size(from)); } -void nexthop_insert(struct nexthop **n, struct nexthop *y); -int nexthop_is_sorted(struct nexthop *x); - -void rta_init(void); -static inline size_t rta_size(const rta *a) { return sizeof(rta) + sizeof(u32)*a->nh.labels; } -#define RTA_MAX_SIZE (sizeof(rta) + sizeof(u32)*MPLS_MAX_LABEL_STACK) -rta *rta_lookup(rta *); /* Get rta equivalent to this one, uc++ */ -static inline int rta_is_cached(rta *r) { return r->cached; } -static inline rta *rta_clone(rta *r) { r->uc++; return r; } -void rta__free(rta *r); -static inline void rta_free(rta *r) { if (r && !--r->uc) rta__free(r); } -rta *rta_do_cow(rta *o, linpool *lp); -static inline rta * rta_cow(rta *r, linpool *lp) { return rta_is_cached(r) ? rta_do_cow(r, lp) : r; } -void rta_dump(rta *); -void rta_dump_all(void); -void rta_show(struct cli *, rta *); - -u32 rt_get_igp_metric(rte *rt); struct hostentry * rt_get_hostentry(rtable *tab, ip_addr a, ip_addr ll, rtable *dep); void rta_apply_hostentry(rta *a, struct hostentry *he, mpls_label_stack *mls); @@ -636,4 +338,6 @@ int rt_flowspec_check(rtable *tab_ip, rtable *tab_flow, const net_addr *n, rta * #define ROA_VALID 1 #define ROA_INVALID 2 +int net_roa_check(rtable *tab, const net_addr *n, u32 asn); + #endif diff --git a/proto/babel/babel.h b/proto/babel/babel.h index 8b6da3c8..00814641 100644 --- a/proto/babel/babel.h +++ b/proto/babel/babel.h @@ -16,7 +16,7 @@ #include "nest/bird.h" #include "nest/cli.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/locks.h" #include "nest/password.h" diff --git a/proto/bfd/bfd.h b/proto/bfd/bfd.h index 91fdaa60..bbccd0b8 100644 --- a/proto/bfd/bfd.h +++ b/proto/bfd/bfd.h @@ -13,7 +13,7 @@ #include "nest/cli.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/password.h" #include "conf/conf.h" #include "lib/hash.h" diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c index 1bae942d..3265cb5e 100644 --- a/proto/bgp/attrs.c +++ b/proto/bgp/attrs.c @@ -15,7 +15,7 @@ #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/attrs.h" #include "conf/conf.h" #include "lib/resource.h" diff --git a/proto/bgp/bgp.c b/proto/bgp/bgp.c index 8c97f7b3..aec78a45 100644 --- a/proto/bgp/bgp.c +++ b/proto/bgp/bgp.c @@ -114,7 +114,7 @@ #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/cli.h" #include "nest/locks.h" #include "conf/conf.h" diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h index 6f209595..d09a5c8f 100644 --- a/proto/bgp/bgp.h +++ b/proto/bgp/bgp.h @@ -14,7 +14,7 @@ #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" diff --git a/proto/bgp/packets.c b/proto/bgp/packets.c index a805cdf0..5def0f27 100644 --- a/proto/bgp/packets.c +++ b/proto/bgp/packets.c @@ -15,7 +15,7 @@ #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/attrs.h" #include "proto/mrt/mrt.h" #include "conf/conf.h" diff --git a/proto/mrt/mrt.h b/proto/mrt/mrt.h index 4ff94c12..3b83aa39 100644 --- a/proto/mrt/mrt.h +++ b/proto/mrt/mrt.h @@ -13,7 +13,7 @@ #include "nest/bird.h" #include "nest/protocol.h" #include "lib/lists.h" -#include "nest/route.h" +#include "nest/rt.h" #include "lib/event.h" #include "lib/hash.h" diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h index 3e704ae8..3d0d57d9 100644 --- a/proto/ospf/ospf.h +++ b/proto/ospf/ospf.h @@ -22,7 +22,7 @@ #include "lib/resource.h" #include "nest/protocol.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/cli.h" #include "nest/locks.h" #include "nest/bfd.h" diff --git a/proto/perf/perf.c b/proto/perf/perf.c index 5d228045..dde7e473 100644 --- a/proto/perf/perf.c +++ b/proto/perf/perf.c @@ -18,7 +18,7 @@ #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/cli.h" #include "conf/conf.h" #include "filter/filter.h" diff --git a/proto/pipe/pipe.c b/proto/pipe/pipe.c index c3457135..483ece67 100644 --- a/proto/pipe/pipe.c +++ b/proto/pipe/pipe.c @@ -35,7 +35,7 @@ #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/cli.h" #include "conf/conf.h" #include "filter/filter.h" diff --git a/proto/radv/radv.h b/proto/radv/radv.h index 14d40f8a..5cca3aca 100644 --- a/proto/radv/radv.h +++ b/proto/radv/radv.h @@ -19,7 +19,7 @@ #include "lib/resource.h" #include "nest/protocol.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/cli.h" #include "nest/locks.h" #include "conf/conf.h" diff --git a/proto/rip/rip.h b/proto/rip/rip.h index f8713c4a..a6fa3326 100644 --- a/proto/rip/rip.h +++ b/proto/rip/rip.h @@ -16,7 +16,7 @@ #include "nest/cli.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/password.h" #include "nest/locks.h" #include "nest/bfd.h" diff --git a/proto/rpki/rpki.h b/proto/rpki/rpki.h index 8a5c38fd..26fbb46e 100644 --- a/proto/rpki/rpki.h +++ b/proto/rpki/rpki.h @@ -13,7 +13,7 @@ #define _BIRD_RPKI_H_ #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "lib/socket.h" #include "lib/ip.h" diff --git a/proto/static/static.c b/proto/static/static.c index cd31afd3..3a0d9257 100644 --- a/proto/static/static.c +++ b/proto/static/static.c @@ -38,7 +38,7 @@ #include "nest/bird.h" #include "nest/iface.h" #include "nest/protocol.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/cli.h" #include "conf/conf.h" #include "filter/filter.h" diff --git a/proto/static/static.h b/proto/static/static.h index fc91f71c..d99f7ebd 100644 --- a/proto/static/static.h +++ b/proto/static/static.h @@ -9,7 +9,7 @@ #ifndef _BIRD_STATIC_H_ #define _BIRD_STATIC_H_ -#include "nest/route.h" +#include "nest/rt.h" #include "nest/bfd.h" #include "lib/buffer.h" diff --git a/sysdep/bsd/krt-sock.c b/sysdep/bsd/krt-sock.c index 3b1d2299..cd449d11 100644 --- a/sysdep/bsd/krt-sock.c +++ b/sysdep/bsd/krt-sock.c @@ -25,7 +25,7 @@ #include "nest/bird.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "sysdep/unix/unix.h" diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c index eb4be711..a37692d6 100644 --- a/sysdep/linux/netlink.c +++ b/sysdep/linux/netlink.c @@ -17,7 +17,7 @@ #undef LOCAL_DEBUG #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "lib/alloca.h" diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c index bfd69b73..671e91fe 100644 --- a/sysdep/unix/krt.c +++ b/sysdep/unix/krt.c @@ -53,7 +53,7 @@ #include "nest/bird.h" #include "nest/iface.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "filter/filter.h" #include "conf/conf.h" diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c index 71749324..9bb37e5d 100644 --- a/sysdep/unix/main.c +++ b/sysdep/unix/main.c @@ -30,7 +30,7 @@ #include "lib/event.h" #include "lib/timer.h" #include "lib/string.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "nest/iface.h" #include "nest/cli.h" diff --git a/test/bt-utils.c b/test/bt-utils.c index 8496e185..ce9a49d7 100644 --- a/test/bt-utils.c +++ b/test/bt-utils.c @@ -14,7 +14,7 @@ #include "test/bt-utils.h" #include "nest/bird.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/protocol.h" #include "sysdep/unix/unix.h" |