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-rw-r--r--nest/config.Y29
-rw-r--r--nest/proto.c33
-rw-r--r--nest/protocol.h17
-rw-r--r--nest/route.h18
-rw-r--r--nest/rt-table.c110
5 files changed, 167 insertions, 40 deletions
diff --git a/nest/config.Y b/nest/config.Y
index c535e9e..667f435 100644
--- a/nest/config.Y
+++ b/nest/config.Y
@@ -17,16 +17,18 @@ void rt_dev_add_iface(char *);
CF_DECLS
CF_KEYWORDS(ROUTER, ID, PROTOCOL, PREFERENCE, DISABLED, DEBUG, ALL, OFF, DIRECT)
-CF_KEYWORDS(INTERFACE, IMPORT, EXPORT, FILTER, NONE)
+CF_KEYWORDS(INTERFACE, IMPORT, EXPORT, FILTER, NONE, TABLE)
%type <i> idval
%type <f> imexport
+%type <r> rtable
CF_GRAMMAR
/* Setting of router ID */
CF_ADDTO(conf, rtrid)
+
rtrid: ROUTER ID idval ';' {
new_config->router_id = $3;
}
@@ -37,6 +39,19 @@ idval:
| IPA { $$ = ipa_to_u32($1); }
;
+/* Creation of routing tables */
+
+CF_ADDTO(conf, newtab)
+
+newtab: TABLE SYM {
+ struct rtable_config *c = cfg_allocz(sizeof(struct rtable_config));
+ struct symbol *s = $2;
+ cf_define_symbol(s, SYM_TABLE, c);
+ c->name = s->name;
+ add_tail(&new_config->tables, &c->n);
+ }
+ ;
+
/* Definition of protocols */
CF_ADDTO(conf, proto)
@@ -51,9 +66,7 @@ proto_name:
this_proto->name = s->name;
}
| SYM {
- if ($1->class) cf_error("Symbol already defined");
- $1->class = SYM_PROTO;
- $1->def = this_proto;
+ cf_define_symbol($1, SYM_PROTO, this_proto);
this_proto->name = $1->name;
}
;
@@ -70,6 +83,7 @@ proto_item:
| DEBUG OFF { this_proto->debug = 0; }
| IMPORT imexport { this_proto->in_filter = $2; }
| EXPORT imexport { this_proto->out_filter = $2; }
+ | TABLE rtable { this_proto->table = $2; }
;
imexport:
@@ -78,6 +92,13 @@ imexport:
| NONE { $$ = FILTER_REJECT; }
;
+rtable:
+ SYM {
+ if ($1->class != SYM_TABLE) cf_error("Table name expected");
+ $$ = $1->def;
+ }
+ ;
+
/* Direct device route protocol */
CF_ADDTO(proto, dev_proto '}')
diff --git a/nest/proto.c b/nest/proto.c
index ad4aa11..3199fee 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -86,7 +86,7 @@ proto_new(struct proto_config *c, unsigned size)
p->preference = c->preference;
p->disabled = c->disabled;
p->proto = pr;
- p->table = &master_table;
+ p->table = (c->table ? : c->global->master_rtc)->table;
p->in_filter = c->in_filter;
p->out_filter = c->out_filter;
return p;
@@ -101,6 +101,33 @@ proto_init_instance(struct proto *p)
p->attn->data = p;
}
+struct announce_hook *
+proto_add_announce_hook(struct proto *p, struct rtable *t)
+{
+ struct announce_hook *h;
+
+ if (!p->rt_notify)
+ return NULL;
+ DBG("Connecting protocol %s to table %s\n", p->name, t->name);
+ h = mb_alloc(p->pool, sizeof(struct announce_hook));
+ h->table = t;
+ h->proto = p;
+ h->next = p->ahooks;
+ p->ahooks = h;
+ add_tail(&t->hooks, &h->n);
+ return h;
+}
+
+static void
+proto_flush_hooks(struct proto *p)
+{
+ struct announce_hook *h;
+
+ for(h=p->ahooks; h; h=h->next)
+ rem_node(&h->n);
+ p->ahooks = NULL;
+}
+
void *
proto_config_new(struct protocol *pr, unsigned size)
{
@@ -296,6 +323,7 @@ proto_feed(void *P)
struct proto *p = P;
DBG("Feeding protocol %s\n", p->name);
+ proto_add_announce_hook(p, p->table);
if_feed_baby(p);
rt_feed_baby(p);
p->core_state = FS_HAPPY;
@@ -365,11 +393,12 @@ proto_flush_all(void *unused)
{
struct proto *p;
- rt_prune(&master_table);
+ rt_prune_all();
neigh_prune();
while ((p = HEAD(flush_proto_list))->n.next)
{
DBG("Flushing protocol %s\n", p->name);
+ proto_flush_hooks(p);
rfree(p->pool);
p->pool = NULL;
p->core_state = FS_HUNGRY;
diff --git a/nest/protocol.h b/nest/protocol.h
index 5e1e2ce..3aed2f2 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -73,6 +73,7 @@ struct proto_config {
struct protocol *proto; /* Protocol */
char *name;
unsigned debug, preference, disabled; /* Generic parameters */
+ struct rtable_config *table; /* Table we're attached to */
struct filter *in_filter, *out_filter; /* Attached filters */
/* Protocol-specific data follow... */
@@ -128,9 +129,10 @@ struct proto {
void (*rte_insert)(struct network *, struct rte *);
void (*rte_remove)(struct network *, struct rte *);
- struct rtable *table; /* Routing table we're connected to */
+ struct rtable *table; /* Our primary routing table */
struct filter *in_filter; /* Input filter */
struct filter *out_filter; /* Output filter */
+ struct announce_hook *ahooks; /* Announcement hooks for this protocol */
/* Hic sunt protocol-specific data */
};
@@ -223,6 +225,19 @@ void proto_notify_state(struct proto *p, unsigned state);
extern struct proto_config *cf_dev_proto;
/*
+ * Route Announcement Hook
+ */
+
+struct announce_hook {
+ node n;
+ struct rtable *table;
+ struct proto *proto;
+ struct announce_hook *next; /* Next hook for the same protocol */
+};
+
+struct announce_hook *proto_add_announce_hook(struct proto *, struct rtable *);
+
+/*
* Callback to sysdep code when shutdown is finished
*/
diff --git a/nest/route.h b/nest/route.h
index 10628cd..5e6b873 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -9,6 +9,7 @@
#ifndef _BIRD_ROUTE_H_
#define _BIRD_ROUTE_H_
+#include "lib/lists.h"
#include "lib/resource.h"
#include "lib/timer.h"
@@ -104,9 +105,17 @@ void fit_put(struct fib_iterator *, struct fib_node *);
* It's guaranteed that there is at most one RTE for every (prefix,proto) pair.
*/
+struct rtable_config {
+ node n;
+ char *name;
+ struct rtable *table;
+};
+
typedef struct rtable {
+ node n; /* Node in list of all tables */
struct fib fib;
char *name; /* Name of this table */
+ list hooks; /* List of announcement hooks */
} rtable;
typedef struct network {
@@ -152,16 +161,18 @@ typedef struct rte {
#define REF_COW 1 /* Copy this rte on write */
-extern rtable master_table;
+struct config;
void rt_init(void);
+void rt_preconfig(struct config *);
+void rt_commit(struct config *);
void rt_setup(pool *, rtable *, char *);
static inline net *net_find(rtable *tab, ip_addr addr, unsigned len) { return (net *) fib_find(&tab->fib, &addr, len); }
static inline net *net_get(rtable *tab, ip_addr addr, unsigned len) { return (net *) fib_get(&tab->fib, &addr, len); }
rte *rte_find(net *net, struct proto *p);
rte *rte_get_temp(struct rta *);
-void rte_update(net *net, struct proto *p, rte *new);
-void rte_discard(rte *old);
+void rte_update(rtable *tab, net *net, struct proto *p, rte *new);
+void rte_discard(rtable *tab, rte *old);
void rte_dump(rte *);
void rte_free(rte *);
rte *rte_do_cow(rte *);
@@ -170,6 +181,7 @@ void rt_dump(rtable *);
void rt_dump_all(void);
void rt_feed_baby(struct proto *p);
void rt_prune(rtable *tab);
+void rt_prune_all(void);
/*
* Route Attributes
diff --git a/nest/rt-table.c b/nest/rt-table.c
index 2b60bb8..a603c7f 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -15,9 +15,9 @@
#include "nest/protocol.h"
#include "lib/resource.h"
#include "lib/event.h"
+#include "conf/conf.h"
#include "filter/filter.h"
-rtable master_table;
static slab *rte_slab;
static linpool *rte_update_pool;
@@ -25,6 +25,7 @@ static linpool *rte_update_pool;
#define RT_GC_MIN_COUNT 100
static pool *rt_table_pool;
+static list routing_tables;
static event *rt_gc_event;
static bird_clock_t rt_last_gc;
static int rt_gc_counter;
@@ -44,6 +45,7 @@ rt_setup(pool *p, rtable *t, char *name)
bzero(t, sizeof(*t));
fib_init(&t->fib, p, sizeof(rte), 0, rte_init);
t->name = name;
+ init_list(&t->hooks);
}
rte *
@@ -97,8 +99,9 @@ rte_better(rte *new, rte *old)
}
static inline void
-do_rte_announce(struct proto *p, net *net, rte *new, rte *old, ea_list *tmpa)
+do_rte_announce(struct announce_hook *a, net *net, rte *new, rte *old, ea_list *tmpa)
{
+ struct proto *p = a->proto;
rte *new0 = new;
rte *old0 = old;
if (new)
@@ -132,39 +135,42 @@ do_rte_announce(struct proto *p, net *net, rte *new, rte *old, ea_list *tmpa)
}
static void
-rte_announce(net *net, rte *new, rte *old, ea_list *tmpa)
+rte_announce(rtable *tab, net *net, rte *new, rte *old, ea_list *tmpa)
{
- struct proto *p;
+ struct announce_hook *a;
- WALK_LIST(p, proto_list)
+ WALK_LIST(a, tab->hooks)
{
- ASSERT(p->core_state == FS_HAPPY);
- if (p->rt_notify)
- do_rte_announce(p, net, new, old, tmpa);
+ ASSERT(a->proto->core_state == FS_HAPPY);
+ do_rte_announce(a, net, new, old, tmpa);
}
}
void
rt_feed_baby(struct proto *p)
{
- rtable *t = &master_table;
+ struct announce_hook *h;
- if (!p->rt_notify)
+ if (!p->ahooks)
return;
debug("Announcing routes to new protocol %s\n", p->name);
- FIB_WALK(&t->fib, fn)
+ for(h=p->ahooks; h; h=h->next)
{
- net *n = (net *) fn;
- rte *e;
- for(e=n->routes; e; e=e->next)
+ rtable *t = h->table;
+ FIB_WALK(&t->fib, fn)
{
- struct proto *q = e->attrs->proto;
- ea_list *tmpa = q->make_tmp_attrs ? q->make_tmp_attrs(e, rte_update_pool) : NULL;
- do_rte_announce(p, n, e, NULL, tmpa);
- lp_flush(rte_update_pool);
+ net *n = (net *) fn;
+ rte *e;
+ for(e=n->routes; e; e=e->next)
+ {
+ struct proto *q = e->attrs->proto;
+ ea_list *tmpa = q->make_tmp_attrs ? q->make_tmp_attrs(e, rte_update_pool) : NULL;
+ do_rte_announce(h, n, e, NULL, tmpa);
+ lp_flush(rte_update_pool);
+ }
}
+ FIB_WALK_END;
}
- FIB_WALK_END;
}
static inline int
@@ -215,7 +221,7 @@ rte_free_quick(rte *e)
}
static void
-rte_recalculate(net *net, struct proto *p, rte *new, ea_list *tmpa)
+rte_recalculate(rtable *table, net *net, struct proto *p, rte *new, ea_list *tmpa)
{
rte *old_best = net->routes;
rte *old = NULL;
@@ -234,7 +240,7 @@ rte_recalculate(net *net, struct proto *p, rte *new, ea_list *tmpa)
if (new && rte_better(new, old_best)) /* It's a new optimal route => announce and relink it */
{
- rte_announce(net, new, old_best, tmpa);
+ rte_announce(table, net, new, old_best, tmpa);
new->next = net->routes;
net->routes = new;
}
@@ -246,7 +252,7 @@ rte_recalculate(net *net, struct proto *p, rte *new, ea_list *tmpa)
for(s=net->routes; s; s=s->next)
if (rte_better(s, r))
r = s;
- rte_announce(net, r, old_best, tmpa);
+ rte_announce(table, net, r, old_best, tmpa);
if (r) /* Re-link the new optimal route */
{
k = &net->routes;
@@ -301,7 +307,7 @@ rte_update_unlock(void)
}
void
-rte_update(net *net, struct proto *p, rte *new)
+rte_update(rtable *table, net *net, struct proto *p, rte *new)
{
ea_list *tmpa = NULL;
@@ -324,7 +330,7 @@ rte_update(net *net, struct proto *p, rte *new)
new->attrs = rta_lookup(new->attrs);
new->flags |= REF_COW;
}
- rte_recalculate(net, p, new, tmpa);
+ rte_recalculate(table, net, p, new, tmpa);
rte_update_unlock();
return;
@@ -334,10 +340,10 @@ drop:
}
void
-rte_discard(rte *old) /* Non-filtered route deletion, used during garbage collection */
+rte_discard(rtable *t, rte *old) /* Non-filtered route deletion, used during garbage collection */
{
rte_update_lock();
- rte_recalculate(old->net, old->attrs->proto, NULL, NULL);
+ rte_recalculate(t, old->net, old->attrs->proto, NULL, NULL);
rte_update_unlock();
}
@@ -361,6 +367,7 @@ rt_dump(rtable *t)
{
rte *e;
net *n;
+ struct announce_hook *a;
debug("Dump of routing table <%s>\n", t->name);
#ifdef DEBUGGING
@@ -373,20 +380,27 @@ rt_dump(rtable *t)
rte_dump(e);
}
FIB_WALK_END;
+ WALK_LIST(a, t->hooks)
+ debug("\tAnnounces routes to protocol %s\n", a->proto->name);
debug("\n");
}
void
rt_dump_all(void)
{
- rt_dump(&master_table);
+ rtable *t;
+
+ WALK_LIST(t, routing_tables)
+ rt_dump(t);
}
static void
rt_gc(void *unused)
{
+ rtable *t;
+
DBG("Entered routing table garbage collector after %d seconds and %d deletes\n", (int)(now - rt_last_gc), rt_gc_counter);
- rt_prune(&master_table);
+ rt_prune_all();
rt_last_gc = now;
rt_gc_counter = 0;
}
@@ -397,11 +411,11 @@ rt_init(void)
rta_init();
rt_table_pool = rp_new(&root_pool, "Routing tables");
rte_update_pool = lp_new(rt_table_pool, 4080);
- rt_setup(rt_table_pool, &master_table, "master");
rte_slab = sl_new(rt_table_pool, sizeof(rte));
rt_last_gc = now;
rt_gc_event = ev_new(rt_table_pool);
rt_gc_event->hook = rt_gc;
+ init_list(&routing_tables);
}
void
@@ -422,7 +436,7 @@ again:
for (e=n->routes; e; e=e->next, rcnt++)
if (e->attrs->proto->core_state != FS_HAPPY)
{
- rte_discard(e);
+ rte_discard(tab, e);
rdel++;
goto rescan;
}
@@ -437,3 +451,39 @@ again:
FIB_ITERATE_END(f);
DBG("Pruned %d of %d routes and %d of %d networks\n", rcnt, rdel, ncnt, ndel);
}
+
+void
+rt_prune_all(void)
+{
+ rtable *t;
+
+ WALK_LIST(t, routing_tables)
+ rt_prune(t);
+}
+
+void
+rt_preconfig(struct config *c)
+{
+ struct symbol *s = cf_find_symbol("master");
+ struct rtable_config *r = cfg_allocz(sizeof(struct rtable_config));
+
+ cf_define_symbol(s, SYM_TABLE, r);
+ r->name = s->name;
+ init_list(&c->tables);
+ add_tail(&c->tables, &r->n);
+ c->master_rtc = r;
+}
+
+void
+rt_commit(struct config *c)
+{
+ struct rtable_config *r;
+
+ WALK_LIST(r, c->tables)
+ {
+ rtable *t = mb_alloc(rt_table_pool, sizeof(struct rtable));
+ rt_setup(rt_table_pool, t, r->name);
+ add_tail(&routing_tables, &t->n);
+ r->table = t;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 02:39:33 +0100