diff options
Diffstat (limited to 'nest/route.h')
| -rw-r--r-- | nest/route.h | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/nest/route.h b/nest/route.h index f5fc9e31..7930058a 100644 --- a/nest/route.h +++ b/nest/route.h @@ -20,7 +20,10 @@ struct proto; struct rte_src; struct symbol; struct timer; +struct fib; struct filter; +struct f_trie; +struct f_trie_walk_state; struct cli; /* @@ -49,7 +52,7 @@ struct fib_iterator { /* See lib/slists.h for an explanation */ uint hash; }; -typedef void (*fib_init_fn)(void *); +typedef void (*fib_init_fn)(struct fib *, void *); struct fib { pool *fib_pool; /* Pool holding all our data */ @@ -149,6 +152,7 @@ struct rtable_config { int gc_min_time; /* Minimum time between two consecutive GC runs */ byte sorted; /* Routes of network are sorted according to rte_better() */ byte internal; /* Internal table of a protocol */ + byte trie_used; /* Rtable has attached trie */ btime min_settle_time; /* Minimum settle time for notifications */ btime max_settle_time; /* Maximum settle time for notifications */ }; @@ -158,6 +162,7 @@ typedef struct rtable { node n; /* Node in list of all tables */ pool *rp; /* Resource pool to allocate everything from, including itself */ struct fib fib; + struct f_trie *trie; /* Trie of prefixes defined in fib */ char *name; /* Name of this table */ list channels; /* List of attached channels (struct channel) */ uint addr_type; /* Type of address data stored in table (NET_*) */ @@ -180,13 +185,20 @@ typedef struct rtable { btime gc_time; /* Time of last GC */ int gc_counter; /* Number of operations since last GC */ byte prune_state; /* Table prune state, 1 -> scheduled, 2-> running */ + byte prune_trie; /* Prune prefix trie during next table prune */ byte hcu_scheduled; /* Hostcache update is scheduled */ byte nhu_state; /* Next Hop Update state */ struct fib_iterator prune_fit; /* Rtable prune FIB iterator */ struct fib_iterator nhu_fit; /* Next Hop Update FIB iterator */ + struct f_trie *trie_new; /* New prefix trie defined during pruning */ + struct f_trie *trie_old; /* Old prefix trie waiting to be freed */ + u32 trie_lock_count; /* Prefix trie locked by walks */ + u32 trie_old_lock_count; /* Old prefix trie locked by walks */ list subscribers; /* Subscribers for notifications */ struct timer *settle_timer; /* Settle time for notifications */ + list flowspec_links; /* List of flowspec links, src for NET_IPx and dst for NET_FLOWx */ + struct f_trie *flowspec_trie; /* Trie for evaluation of flowspec notifications */ } rtable; struct rt_subscription { @@ -196,6 +208,13 @@ struct rt_subscription { void *data; }; +struct rt_flowspec_link { + node n; + rtable *src; + rtable *dst; + u32 uc; +}; + #define NHU_CLEAN 0 #define NHU_SCHEDULED 1 #define NHU_RUNNING 2 @@ -262,6 +281,7 @@ typedef struct rte { struct { u8 suppressed; /* Used for deterministic MED comparison */ s8 stale; /* Route is LLGR_STALE, -1 if unknown */ + struct rtable *base_table; /* Base table for Flowspec validation */ } bgp; #endif #ifdef CONFIG_BABEL @@ -315,8 +335,12 @@ void rt_preconfig(struct config *); void rt_commit(struct config *new, struct config *old); void rt_lock_table(rtable *); void rt_unlock_table(rtable *); +struct f_trie * rt_lock_trie(rtable *tab); +void rt_unlock_trie(rtable *tab, struct f_trie *trie); void rt_subscribe(rtable *tab, struct rt_subscription *s); void rt_unsubscribe(struct rt_subscription *s); +void rt_flowspec_link(rtable *src, rtable *dst); +void rt_flowspec_unlink(rtable *src, rtable *dst); rtable *rt_setup(pool *, struct rtable_config *); static inline void rt_shutdown(rtable *r) { rfree(r->rp); } @@ -324,7 +348,8 @@ static inline net *net_find(rtable *tab, const net_addr *addr) { return (net *) static inline net *net_find_valid(rtable *tab, const net_addr *addr) { net *n = net_find(tab, addr); return (n && rte_is_valid(n->routes)) ? n : NULL; } static inline net *net_get(rtable *tab, const net_addr *addr) { return (net *) fib_get(&tab->fib, addr); } -void *net_route(rtable *tab, const net_addr *n); +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 *); @@ -356,6 +381,18 @@ void rt_prune_sync(rtable *t, int all); int rte_update_out(struct channel *c, const net_addr *n, rte *new, rte *old0, int refeed); struct rtable_config *rt_new_table(struct symbol *s, uint addr_type); +static inline int rt_is_ip(rtable *tab) +{ return (tab->addr_type == NET_IP4) || (tab->addr_type == NET_IP6); } + +static inline int rt_is_vpn(rtable *tab) +{ return (tab->addr_type == NET_VPN4) || (tab->addr_type == NET_VPN6); } + +static inline int rt_is_roa(rtable *tab) +{ return (tab->addr_type == NET_ROA4) || (tab->addr_type == NET_ROA6); } + +static inline int rt_is_flow(rtable *tab) +{ return (tab->addr_type == NET_FLOW4) || (tab->addr_type == NET_FLOW6); } + /* Default limit for ECMP next hops, defined in sysdep code */ extern const int rt_default_ecmp; @@ -372,6 +409,8 @@ struct rt_show_data { struct rt_show_data_rtable *tab; /* Iterator over table list */ struct rt_show_data_rtable *last_table; /* Last table in output */ struct fib_iterator fit; /* Iterator over networks in table */ + struct f_trie_walk_state *walk_state; /* Iterator over networks in trie */ + struct f_trie *walk_lock; /* Locked trie for walking */ int verbose, tables_defined_by; const struct filter *filter; struct proto *show_protocol; @@ -379,9 +418,10 @@ struct rt_show_data { struct channel *export_channel; struct config *running_on_config; struct krt_proto *kernel; - int export_mode, primary_only, filtered, stats, show_for; + int export_mode, addr_mode, primary_only, filtered, stats; int table_open; /* Iteration (fit) is open */ + int trie_walk; /* Current table is iterated using trie */ int net_counter, rt_counter, show_counter, table_counter; int net_counter_last, rt_counter_last, show_counter_last; }; @@ -398,6 +438,11 @@ struct rt_show_data_rtable * rt_show_add_table(struct rt_show_data *d, rtable *t #define RSD_TDB_SET 0x1 /* internal: show empty tables */ #define RSD_TDB_NMN 0x2 /* internal: need matching net */ +/* Value of addr_mode */ +#define RSD_ADDR_EQUAL 1 /* Exact query - show route <addr> */ +#define RSD_ADDR_FOR 2 /* Longest prefix match - show route for <addr> */ +#define RSD_ADDR_IN 3 /* Interval query - show route in <addr> */ + /* Value of export_mode in struct rt_show_data */ #define RSEM_NONE 0 /* Export mode not used */ #define RSEM_PREEXPORT 1 /* Routes ready for export, before filtering */ @@ -718,6 +763,9 @@ rta_set_recursive_next_hop(rtable *dep, rta *a, rtable *tab, ip_addr gw, ip_addr static inline void rt_lock_hostentry(struct hostentry *he) { if (he) he->uc++; } static inline void rt_unlock_hostentry(struct hostentry *he) { if (he) he->uc--; } +int rt_flowspec_check(rtable *tab_ip, rtable *tab_flow, const net_addr *n, rta *a, int interior); + + /* * Default protocol preferences */ |