protos_preconfig(c);
rt_preconfig(c);
cf_parse();
- protos_postconfig(c);
+
if (EMPTY_LIST(c->protos))
cf_error("No protocol is specified in the config file");
- /* XXXX */
+
+ /*
if (!c->router_id)
cf_error("Router ID must be configured manually");
+ */
done = 1;
int mrtdump_file; /* Configured MRTDump file (sysdep, fd in unix) */
char *syslog_name; /* Name used for syslog (NULL -> no syslog) */
- struct rtable_config *master_rtc; /* Configuration of master routing table */
+ struct rtable_config *def_tables[NET_MAX]; /* Default routing tables for each network */
struct iface_patt *router_id_from; /* Configured list of router ID iface patterns */
u32 router_id; /* Our Router ID */
struct symbol *s;
char *t;
struct rtable_config *r;
+ struct channel_config *cc;
struct f_inst *x;
struct filter *f;
struct f_tree *e;
bird_clock_t time;
struct f_prefix px;
struct proto_spec ps;
+ struct channel_limit cl;
struct timeformat *tf;
}
#define ABS(a) ((a)>=0 ? (a) : -(a))
#define DELTA(a,b) (((a)>=(b))?(a)-(b):(b)-(a))
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(*(a)))
+#define CALL(fn, args...) ({ if (fn) fn(args); })
static inline int uint_cmp(uint i1, uint i2)
{ return (int)(i1 > i2) - (int)(i1 < i2); }
#define WALK_LIST2(n,nn,list,pos) \
for(nn=(list).head; NODE_VALID(nn) && (n=SKIP_BACK(typeof(*n),pos,nn)); nn=nn->next)
#define WALK_LIST_DELSAFE(n,nxt,list) \
- for(n=HEAD(list); nxt=NODE_NEXT(n); n=(void *) nxt)
+ for(n=HEAD(list); nxt=NODE_NEXT(n); n=(void *) nxt)
+#define WALK_LIST2_DELSAFE(n,nn,nxt,list,pos) \
+ for(nn=HEAD(list); (nxt=nn->next) && (n=SKIP_BACK(typeof(*n),pos,nn)); nn=nxt)
+
/* WALK_LIST_FIRST supposes that called code removes each processed node */
#define WALK_LIST_FIRST(n,list) \
while(n=HEAD(list), (NODE (n))->next)
#include "lib/net.h"
+const char * const net_label[] = {
+ [NET_IP4] = "ipv4",
+ [NET_IP6] = "ipv6",
+ [NET_VPN4] = "vpn4",
+ [NET_VPN6] = "vpn6"
+};
+
const u16 net_addr_length[] = {
[NET_IP4] = sizeof(net_addr_ip4),
[NET_IP6] = sizeof(net_addr_ip6),
#define NET_ROA6 6
#define NET_MAX 7
+#define NB_IP4 (1 << NET_IP4)
+#define NB_IP6 (1 << NET_IP6)
+#define NB_VPN4 (1 << NET_VPN4)
+#define NB_VPN6 (1 << NET_VPN6)
+
+#define NB_IP (NB_IP4 | NB_IP6)
+#define NB_ANY 0xffffffff
+
+
typedef struct net_addr {
u8 type;
u8 pxlen;
} net_addr_union;
+extern const char * const net_label[];
extern const u16 net_addr_length[];
extern const u8 net_max_prefix_length[];
extern const u16 net_max_text_length[];
net_fill_ip6(a, ipa_to_ip6(prefix), IP6_MAX_PREFIX_LENGTH);
}
+
+static inline int net_val_match(u8 type, u32 mask)
+{ return !!((1 << type) & mask); }
+
+static inline int net_type_match(const net_addr *a, u32 mask)
+{ return net_val_match(a->type, mask); }
+
static inline int net_is_ip(const net_addr *a)
{ return (a->type == NET_IP4) || (a->type == NET_IP6); }
CF_DEFINES
static struct proto_config *this_proto;
+static struct channel_config *this_channel;
static struct iface_patt *this_ipatt;
static struct iface_patt_node *this_ipn;
/* static struct roa_table_config *this_roa_table; */
return rv;
}
+static void
+proto_postconfig(void)
+{
+ CALL(this_proto->protocol->postconfig, this_proto);
+ this_channel = NULL;
+ this_proto = NULL;
+}
+
+
#define DIRECT_CFG ((struct rt_dev_config *) this_proto)
CF_DECLS
%type <s> optsym
%type <ra> r_args
%type <sd> sym_args
-%type <i> proto_start echo_mask echo_size debug_mask debug_list debug_flag mrtdump_mask mrtdump_list mrtdump_flag export_mode limit_action table_type table_sorted tos
+%type <i> proto_start echo_mask echo_size debug_mask debug_list debug_flag mrtdump_mask mrtdump_list mrtdump_flag export_mode limit_action net_type table_sorted tos
%type <ps> proto_patt proto_patt2
-%type <g> limit_spec
+%type <cc> channel_start proto_channel
+%type <cl> limit_spec
CF_GRAMMAR
| listen_opts listen_opt
;
-listen_opt:
+listen_opt:
ADDRESS ipa { new_config->listen_bgp_addr = $2; }
| PORT expr { new_config->listen_bgp_port = $2; }
| V6ONLY { new_config->listen_bgp_flags = 0; }
gr_opts: GRACEFUL RESTART WAIT expr ';' { new_config->gr_wait = $4; } ;
-/* Creation of routing tables */
+/* Network types (for tables, channels) */
-CF_ADDTO(conf, table)
-
-table_type:
- /* empty */ { $$ = NET_IP4; }
- | IPV4 { $$ = NET_IP4; }
+net_type:
+ IPV4 { $$ = NET_IP4; }
| IPV6 { $$ = NET_IP6; }
| VPN4 { $$ = NET_VPN4; }
| VPN6 { $$ = NET_VPN6; }
| ROA6 { $$ = NET_ROA6; }
;
+
+/* Creation of routing tables */
+
+CF_ADDTO(conf, table)
+
table_sorted:
{ $$ = 0; }
| SORTED { $$ = 1; }
;
-table: table_type TABLE SYM table_sorted {
+table: net_type TABLE SYM table_sorted {
struct rtable_config *cf;
cf = rt_new_table($3, $1);
cf->sorted = $4;
}
;
+
/* Definition of protocols */
-CF_ADDTO(conf, proto)
+CF_ADDTO(conf, proto { proto_postconfig(); })
proto_start:
PROTOCOL { $$ = SYM_PROTO; }
proto_item:
/* EMPTY */
- | PREFERENCE expr {
- if ($2 < 0 || $2 > 0xFFFF) cf_error("Invalid preference");
- this_proto->preference = $2;
- }
| DISABLED bool { this_proto->disabled = $2; }
| DEBUG debug_mask { this_proto->debug = $2; }
| MRTDUMP mrtdump_mask { this_proto->mrtdump = $2; }
- | IMPORT imexport { this_proto->in_filter = $2; }
- | EXPORT imexport { this_proto->out_filter = $2; }
- | RECEIVE LIMIT limit_spec { this_proto->rx_limit = $3; }
- | IMPORT LIMIT limit_spec { this_proto->in_limit = $3; }
- | EXPORT LIMIT limit_spec { this_proto->out_limit = $3; }
- | IMPORT KEEP FILTERED bool { this_proto->in_keep_filtered = $4; }
- | TABLE rtable { this_proto->table = $2; }
| ROUTER ID idval { this_proto->router_id = $3; }
| DESCRIPTION text { this_proto->dsc = $2; }
;
+
+channel_start: net_type
+{
+ $$ = this_channel = channel_config_new(NULL, $1, this_proto);
+};
+
+channel_item:
+ TABLE rtable {
+ if (this_channel->net_type && ($2->addr_type != this_channel->net_type))
+ cf_error("Incompatible table type");
+ this_channel->table = $2;
+ }
+ | IMPORT imexport { this_channel->in_filter = $2; }
+ | EXPORT imexport { this_channel->out_filter = $2; }
+ | RECEIVE LIMIT limit_spec { this_channel->rx_limit = $3; }
+ | IMPORT LIMIT limit_spec { this_channel->in_limit = $3; }
+ | EXPORT LIMIT limit_spec { this_channel->out_limit = $3; }
+ | PREFERENCE expr { this_channel->preference = $2; check_u16($2); }
+ | IMPORT KEEP FILTERED bool { this_channel->in_keep_filtered = $4; }
+ ;
+
+channel_opts:
+ /* empty */
+ | channel_opts channel_item ';'
+ ;
+
+channel_opt_list:
+ /* empty */
+ | '{' channel_opts '}'
+ ;
+
+channel_end:
+{
+ if (!this_channel->table)
+ cf_error("Routing table not specified");
+
+ this_channel = NULL;
+};
+
+proto_channel: channel_start channel_opt_list channel_end;
+
+
+rtable:
+ SYM {
+ if ($1->class != SYM_TABLE) cf_error("Table expected");
+ $$ = $1->def;
+ }
+ ;
+
imexport:
FILTER filter { $$ = $2; }
| where_filter
;
limit_spec:
- expr limit_action {
- struct proto_limit *l = cfg_allocz(sizeof(struct proto_limit));
- l->limit = $1;
- l->action = $2;
- $$ = l;
- }
- | OFF { $$ = NULL; }
- ;
-
-rtable:
- SYM {
- if ($1->class != SYM_TABLE) cf_error("Table name expected");
- $$ = $1->def;
- }
+ expr limit_action { $$ = (struct channel_limit){ .limit = $1, $$.action = $2 }; }
+ | OFF { $$ = (struct channel_limit){}; }
;
CF_ADDTO(conf, debug_default)
dev_proto:
dev_proto_start proto_name '{'
| dev_proto proto_item ';'
+ | dev_proto proto_channel ';'
| dev_proto dev_iface_patt ';'
;
static inline void
ifa_send_notify(struct proto *p, unsigned c, struct ifa *a)
{
- if (p->ifa_notify)
+ if (p->ifa_notify && (p->proto_state != PS_DOWN))
{
if (p->debug & D_IFACES)
log(L_TRACE "%s < %s address %N on interface %s %s",
DBG("IFA change notification (%x) for %s:%I\n", c, a->iface->name, a->ip);
- WALK_LIST(p, active_proto_list)
+ WALK_LIST(p, proto_list)
ifa_send_notify(p, c, a);
}
static inline void
if_send_notify(struct proto *p, unsigned c, struct iface *i)
{
- if (p->if_notify)
+ if (p->if_notify && (p->proto_state != PS_DOWN))
{
if (p->debug & D_IFACES)
log(L_TRACE "%s < interface %s %s", p->name, i->name,
ifa_notify_change_(IF_CHANGE_DOWN, a);
}
- WALK_LIST(p, active_proto_list)
+ WALK_LIST(p, proto_list)
if_send_notify(p, c, i);
if (c & IF_CHANGE_UP)
rem_node(&n->n);
add_tail(&neigh_hash_table[neigh_hash(n->proto, &n->addr)], &n->n);
DBG("Waking up sticky neighbor %I\n", n->addr);
- if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING)
+ if (n->proto->neigh_notify && (n->proto->proto_state != PS_STOP))
n->proto->neigh_notify(n);
}
n->iface = NULL;
n->ifa = NULL;
n->scope = -1;
- if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING)
+ if (n->proto->neigh_notify && (n->proto->proto_state != PS_STOP))
n->proto->neigh_notify(n);
rem_node(&n->n);
if (n->flags & NEF_STICKY)
WALK_LIST_DELSAFE(x, y, i->neighbors)
{
neighbor *n = SKIP_BACK(neighbor, if_n, x);
- if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING)
+ if (n->proto->neigh_notify && (n->proto->proto_state != PS_STOP))
n->proto->neigh_notify(n);
}
}
#include "filter/filter.h"
pool *proto_pool;
+list proto_list;
static list protocol_list;
-static list proto_list;
#define PD(pr, msg, args...) do { if (pr->debug & D_STATES) { log(L_TRACE "%s: " msg, pr->name , ## args); } } while(0)
-list active_proto_list;
-static list inactive_proto_list;
-static list initial_proto_list;
-static list flush_proto_list;
-static struct proto *initial_device_proto;
-
-static event *proto_flush_event;
static timer *proto_shutdown_timer;
static timer *gr_wait_timer;
static u32 graceful_restart_locks;
static char *p_states[] = { "DOWN", "START", "UP", "STOP" };
-static char *c_states[] = { "HUNGRY", "???", "HAPPY", "FLUSHING" };
-static void proto_flush_loop(void *);
+extern struct protocol proto_unix_iface;
+
static void proto_shutdown_loop(struct timer *);
static void proto_rethink_goal(struct proto *p);
-static void proto_want_export_up(struct proto *p);
-static void proto_fell_down(struct proto *p);
static char *proto_state_name(struct proto *p);
+static void channel_verify_limits(struct channel *c);
+static void channel_reset_limit(struct channel_limit *l);
-static void
-proto_relink(struct proto *p)
-{
- list *l = NULL;
- switch (p->core_state)
- {
- case FS_HUNGRY:
- l = &inactive_proto_list;
- break;
- case FS_HAPPY:
- l = &active_proto_list;
- break;
- case FS_FLUSHING:
- l = &flush_proto_list;
- break;
- default:
- ASSERT(0);
- }
+static inline int proto_is_done(struct proto *p)
+{ return (p->proto_state == PS_DOWN) && (p->active_channels == 0); }
- rem_node(&p->n);
- add_tail(l, &p->n);
-}
+static inline int channel_is_active(struct channel *c)
+{ return (c->channel_state == CS_START) || (c->channel_state == CS_UP); }
static void
proto_log_state_change(struct proto *p)
{
if (p->debug & D_STATES)
+ {
+ char *name = proto_state_name(p);
+ if (name != p->last_state_name_announced)
{
- char *name = proto_state_name(p);
- if (name != p->last_state_name_announced)
- {
- p->last_state_name_announced = name;
- PD(p, "State changed to %s", proto_state_name(p));
- }
+ p->last_state_name_announced = name;
+ PD(p, "State changed to %s", proto_state_name(p));
}
+ }
else
p->last_state_name_announced = NULL;
}
-/**
- * proto_new - create a new protocol instance
- * @c: protocol configuration
- * @size: size of protocol data structure (each protocol instance is represented by
- * a structure starting with generic part [struct &proto] and continued
- * with data specific to the protocol)
- *
- * When a new configuration has been read in, the core code starts
- * initializing all the protocol instances configured by calling their
- * init() hooks with the corresponding instance configuration. The initialization
- * code of the protocol is expected to create a new instance according to the
- * configuration by calling this function and then modifying the default settings
- * to values wanted by the protocol.
- */
-void *
-proto_new(struct proto_config *c, unsigned size)
+struct channel_config *
+proto_cf_find_channel(struct proto_config *pc, uint net_type)
{
- struct protocol *pr = c->protocol;
- struct proto *p = mb_allocz(proto_pool, size);
-
- p->cf = c;
- p->debug = c->debug;
- p->mrtdump = c->mrtdump;
- p->name = c->name;
- p->preference = c->preference;
- p->disabled = c->disabled;
- p->proto = pr;
- p->table = c->table->table;
- p->hash_key = random_u32();
- c->proto = p;
- return p;
+ struct channel_config *cc;
+
+ WALK_LIST(cc, pc->channels)
+ if (cc->net_type == net_type)
+ return cc;
+
+ return NULL;
}
-static void
-proto_init_instance(struct proto *p)
+/**
+ * proto_find_channel_by_table - find channel connected to a routing table
+ * @p: protocol instance
+ * @t: routing table
+ *
+ * Returns pointer to channel or NULL
+ */
+struct channel *
+proto_find_channel_by_table(struct proto *p, struct rtable *t)
{
- /* Here we cannot use p->cf->name since it won't survive reconfiguration */
- p->pool = rp_new(proto_pool, p->proto->name);
- p->attn = ev_new(p->pool);
- p->attn->data = p;
+ struct channel *c;
- if (graceful_restart_state == GRS_INIT)
- p->gr_recovery = 1;
+ WALK_LIST(c, p->channels)
+ if (c->table == t)
+ return c;
- if (! p->proto->multitable)
- rt_lock_table(p->table);
+ return NULL;
}
-extern pool *rt_table_pool;
/**
- * proto_add_announce_hook - connect protocol to a routing table
+ * proto_add_channel - connect protocol to a routing table
* @p: protocol instance
- * @t: routing table to connect to
- * @stats: per-table protocol statistics
- *
- * This function creates a connection between the protocol instance @p and the
- * routing table @t, making the protocol hear all changes in the table.
+ * @cf: channel configuration
*
- * The announce hook is linked in the protocol ahook list. Announce hooks are
- * allocated from the routing table resource pool and when protocol accepts
- * routes also in the table ahook list. The are linked to the table ahook list
- * and unlinked from it depending on export_state (in proto_want_export_up() and
- * proto_want_export_down()) and they are automatically freed after the protocol
- * is flushed (in proto_fell_down()).
+ * This function creates a channel between the protocol instance @p and the
+ * routing table specified in the configuration @cf, making the protocol hear
+ * all changes in the table and allowing the protocol to update routes in the
+ * table.
*
- * Unless you want to listen to multiple routing tables (as the Pipe protocol
- * does), you needn't to worry about this function since the connection to the
- * protocol's primary routing table is initialized automatically by the core
- * code.
+ * The channel is linked in the protocol channel list and when active also in
+ * the table channel list. Channels are allocated from the global resource pool
+ * (@proto_pool) and they are automatically freed when the protocol is removed.
*/
-struct announce_hook *
-proto_add_announce_hook(struct proto *p, struct rtable *t, struct proto_stats *stats)
+
+struct channel *
+proto_add_channel(struct proto *p, struct channel_config *cf)
+{
+ struct channel *c = mb_allocz(proto_pool, cf->channel->channel_size);
+
+ c->name = cf->name;
+ c->channel = cf->channel;
+ c->proto = p;
+ c->table = cf->table->table;
+
+ c->in_filter = cf->in_filter;
+ c->out_filter = cf->out_filter;
+ c->rx_limit = cf->rx_limit;
+ c->in_limit = cf->in_limit;
+ c->out_limit = cf->out_limit;
+
+ c->net_type = cf->net_type;
+ c->ra_mode = cf->ra_mode;
+ c->preference = cf->preference;
+ c->merge_limit = cf->merge_limit;
+ c->in_keep_filtered = cf->in_keep_filtered;
+
+ c->channel_state = CS_DOWN;
+ c->export_state = ES_DOWN;
+ c->last_state_change = now;
+ c->reloadable = 1;
+
+ CALL(c->channel->init, c, cf);
+
+ add_tail(&p->channels, &c->n);
+
+ PD(p, "Channel %s connected to table %s", c->name, c->table->name);
+
+ return c;
+}
+
+void
+proto_remove_channel(struct proto *p, struct channel *c)
+{
+ ASSERT(c->channel_state == CS_DOWN);
+
+ PD(p, "Channel %s removed", c->name);
+
+ rem_node(&c->n);
+ mb_free(c);
+}
+
+
+static void
+proto_start_channels(struct proto *p)
+{
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ if (!c->disabled)
+ channel_set_state(c, CS_UP);
+}
+
+static void
+proto_pause_channels(struct proto *p)
{
- struct announce_hook *h;
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ if (!c->disabled && channel_is_active(c))
+ channel_set_state(c, CS_START);
+}
- DBG("Connecting protocol %s to table %s\n", p->name, t->name);
- PD(p, "Connected to table %s", t->name);
+static void
+proto_stop_channels(struct proto *p)
+{
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ if (!c->disabled && channel_is_active(c))
+ channel_set_state(c, CS_FLUSHING);
+}
- h = mb_allocz(rt_table_pool, sizeof(struct announce_hook));
- h->table = t;
- h->proto = p;
- h->stats = stats;
+static void
+proto_remove_channels(struct proto *p)
+{
+ struct channel *c;
+ WALK_LIST_FIRST(c, p->channels)
+ proto_remove_channel(p, c);
+}
+
+static void
+channel_schedule_feed(struct channel *c, int initial)
+{
+ // DBG("%s: Scheduling meal\n", p->name);
+ ASSERT(c->channel_state == CS_UP);
- h->next = p->ahooks;
- p->ahooks = h;
+ c->export_state = ES_FEEDING;
+ c->refeeding = !initial;
- if (p->rt_notify && (p->export_state != ES_DOWN))
- add_tail(&t->hooks, &h->n);
- return h;
+ ev_schedule(c->feed_event);
+}
+
+static void
+channel_feed_loop(void *ptr)
+{
+ struct channel *c = ptr;
+
+ if (c->export_state != ES_FEEDING)
+ return;
+
+ if (!c->feed_active)
+ if (c->proto->feed_begin)
+ c->proto->feed_begin(c, !c->refeeding);
+
+ // DBG("Feeding protocol %s continued\n", p->name);
+ if (!rt_feed_channel(c))
+ {
+ ev_schedule(c->feed_event);
+ return;
+ }
+
+ // DBG("Feeding protocol %s finished\n", p->name);
+ c->export_state = ES_READY;
+ // proto_log_state_change(p);
+
+ if (c->proto->feed_end)
+ c->proto->feed_end(c);
+}
+
+
+static void
+channel_start_export(struct channel *c)
+{
+ ASSERT(c->channel_state == CS_UP);
+ ASSERT(c->export_state == ES_DOWN);
+
+ channel_schedule_feed(c, 1); /* Sets ES_FEEDING */
+}
+
+static void
+channel_stop_export(struct channel *c)
+{
+ /* Need to abort feeding */
+ if (c->export_state == ES_FEEDING)
+ rt_feed_channel_abort(c);
+
+ c->export_state = ES_DOWN;
+}
+
+static void
+channel_do_start(struct channel *c)
+{
+ rt_lock_table(c->table);
+ add_tail(&c->table->channels, &c->table_node);
+ c->proto->active_channels++;
+
+ c->feed_event = ev_new(c->proto->pool);
+ c->feed_event->data = c;
+ c->feed_event->hook = channel_feed_loop;
+
+ channel_reset_limit(&c->rx_limit);
+ channel_reset_limit(&c->in_limit);
+ channel_reset_limit(&c->out_limit);
+
+ CALL(c->channel->start, c);
+}
+
+static void
+channel_do_flush(struct channel *c)
+{
+ rt_schedule_prune(c->table);
+
+ c->gr_wait = 0;
+ if (c->gr_lock)
+ channel_graceful_restart_unlock(c);
+
+ CALL(c->channel->shutdown, c);
+}
+
+static void
+channel_do_down(struct channel *c)
+{
+ rem2_node(&c->table_node);
+ rt_unlock_table(c->table);
+ c->proto->active_channels--;
+
+ if ((c->stats.imp_routes + c->stats.filt_routes) != 0)
+ log(L_ERR "%s: Channel %s is down but still has some routes", c->proto->name, c->name);
+
+ memset(&c->stats, 0, sizeof(struct proto_stats));
+
+ /* Schedule protocol shutddown */
+ if (proto_is_done(c->proto))
+ ev_schedule(c->proto->event);
+}
+
+void
+channel_set_state(struct channel *c, uint state)
+{
+ uint cs = c->channel_state;
+ uint es = c->export_state;
+
+ DBG("%s reporting state transition %s/%s -> */%s\n", p->name, c_states[cs], p_states[ops], p_states[ps]);
+ if (state == cs)
+ return;
+
+ c->channel_state = state;
+ c->last_state_change = now;
+
+ switch (state)
+ {
+ case CS_START:
+ ASSERT(cs == CS_DOWN || cs == CS_UP);
+
+ if (cs == CS_DOWN)
+ channel_do_start(c);
+
+ if (es != ES_DOWN)
+ channel_stop_export(c);
+
+ break;
+
+ case CS_UP:
+ ASSERT(cs == CS_DOWN || cs == CS_START);
+
+ if (cs == CS_DOWN)
+ channel_do_start(c);
+
+ if (!c->gr_wait)
+ channel_start_export(c);
+
+ break;
+
+ case CS_FLUSHING:
+ ASSERT(cs == CS_START || cs == CS_UP);
+
+ if (es != ES_DOWN)
+ channel_stop_export(c);
+
+ channel_do_flush(c);
+ break;
+
+ case CS_DOWN:
+ ASSERT(cs == CS_FLUSHING);
+
+ channel_do_down(c);
+ break;
+
+ default:
+ ASSERT(0);
+ }
+ // XXXX proto_log_state_change(c);
}
/**
- * proto_find_announce_hook - find announce hooks
- * @p: protocol instance
- * @t: routing table
+ * channel_request_feeding - request feeding routes to the channel
+ * @c: given channel
*
- * Returns pointer to announce hook or NULL
+ * Sometimes it is needed to send again all routes to the channel. This is
+ * called feeding and can be requested by this function. This would cause
+ * channel export state transition to ES_FEEDING (during feeding) and when
+ * completed, it will switch back to ES_READY. This function can be called
+ * even when feeding is already running, in that case it is restarted.
*/
-struct announce_hook *
-proto_find_announce_hook(struct proto *p, struct rtable *t)
+void
+channel_request_feeding(struct channel *c)
{
- struct announce_hook *a;
+ ASSERT(c->channel_state == CS_UP);
- for (a = p->ahooks; a; a = a->next)
- if (a->table == t)
- return a;
+ /* Do nothing if we are still waiting for feeding */
+ if (c->export_state == ES_DOWN)
+ return;
- return NULL;
+ /* If we are already feeding, we want to restart it */
+ if (c->export_state == ES_FEEDING)
+ {
+ /* Unless feeding is in initial state */
+ if (!c->feed_active)
+ return;
+
+ rt_feed_channel_abort(c);
+ }
+
+ channel_reset_limit(&c->out_limit);
+
+ /* Hack: reset exp_routes during refeed, and do not decrease it later */
+ c->stats.exp_routes = 0;
+
+ channel_schedule_feed(c, 0); /* Sets ES_FEEDING */
+ // proto_log_state_change(c);
+}
+
+static inline int
+channel_reloadable(struct channel *c)
+{
+ return c->proto->reload_routes && c->reloadable;
}
static void
-proto_link_ahooks(struct proto *p)
+channel_request_reload(struct channel *c)
{
- struct announce_hook *h;
+ ASSERT(c->channel_state == CS_UP);
+ // ASSERT(channel_reloadable(c));
+
+ c->proto->reload_routes(c);
- if (p->rt_notify)
- for(h=p->ahooks; h; h=h->next)
- add_tail(&h->table->hooks, &h->n);
+ /*
+ * Should this be done before reload_routes() hook?
+ * Perhaps, but routes are updated asynchronously.
+ */
+ channel_reset_limit(&c->rx_limit);
+ channel_reset_limit(&c->in_limit);
}
-static void
-proto_unlink_ahooks(struct proto *p)
+const struct channel_class channel_basic = {
+ .channel_size = sizeof(struct channel),
+ .config_size = sizeof(struct channel_config)
+};
+
+void *
+channel_config_new(const struct channel_class *cc, uint net_type, struct proto_config *proto)
+{
+ struct channel_config *cf = NULL;
+ struct rtable_config *tab = NULL;
+ const char *name = NULL;
+
+ if (net_type)
+ {
+ if (!net_val_match(net_type, proto->protocol->channel_mask))
+ cf_error("Unsupported channel type");
+
+ if (proto->net_type && (net_type != proto->net_type))
+ cf_error("Different channel type");
+
+ tab = new_config->def_tables[net_type];
+ name = net_label[net_type];
+ }
+
+ if (!cc)
+ cc = &channel_basic;
+
+ cf = cfg_allocz(cc->config_size);
+ cf->name = name;
+ cf->channel = cc;
+ cf->table = tab;
+ cf->out_filter = FILTER_REJECT;
+
+ cf->net_type = net_type;
+ cf->ra_mode = RA_OPTIMAL;
+ cf->preference = proto->protocol->preference;
+
+ add_tail(&proto->channels, &cf->n);
+
+ return cf;
+}
+
+struct channel_config *
+channel_copy_config(struct channel_config *src, struct proto_config *proto)
+{
+ struct channel_config *dst = cfg_alloc(src->channel->config_size);
+
+ memcpy(dst, src, src->channel->config_size);
+ add_tail(&proto->channels, &dst->n);
+ CALL(src->channel->copy_config, dst, src);
+
+ return dst;
+}
+
+
+static int reconfigure_type; /* Hack to propagate type info to channel_reconfigure() */
+
+int
+channel_reconfigure(struct channel *c, struct channel_config *cf)
+{
+ /* FIXME: better handle these changes, also handle in_keep_filtered */
+ if ((c->table != cf->table->table) || (c->ra_mode != cf->ra_mode))
+ return 0;
+
+ int import_changed = !filter_same(c->in_filter, cf->in_filter);
+ int export_changed = !filter_same(c->out_filter, cf->out_filter);
+
+ if (c->preference != cf->preference)
+ import_changed = 1;
+
+ if (c->merge_limit != cf->merge_limit)
+ export_changed = 1;
+
+ /* Reconfigure channel fields */
+ c->in_filter = cf->in_filter;
+ c->out_filter = cf->out_filter;
+ c->rx_limit = cf->rx_limit;
+ c->in_limit = cf->in_limit;
+ c->out_limit = cf->out_limit;
+
+ // c->ra_mode = cf->ra_mode;
+ c->merge_limit = cf->merge_limit;
+ c->preference = cf->preference;
+ c->in_keep_filtered = cf->in_keep_filtered;
+
+ channel_verify_limits(c);
+
+ CALL(c->channel->reconfigure, c, cf);
+
+ /* If the channel is not open, it has no routes and we cannot reload it anyways */
+ if (c->channel_state != CS_UP)
+ return 1;
+
+ if (reconfigure_type == RECONFIG_SOFT)
+ {
+ if (import_changed)
+ log(L_INFO "Channel %s.%s changed import", c->proto->name, c->name);
+
+ if (export_changed)
+ log(L_INFO "Channel %s.%s changed export", c->proto->name, c->name);
+
+ return 1;
+ }
+
+ /* Route reload may be not supported */
+ if (import_changed && !channel_reloadable(c))
+ return 0;
+
+ if (import_changed || export_changed)
+ log(L_INFO "Reloading channel %s.%s", c->proto->name, c->name);
+
+ if (import_changed)
+ channel_request_reload(c);
+
+ if (export_changed)
+ channel_request_feeding(c);
+
+ return 1;
+}
+
+
+int
+proto_configure_channel(struct proto *p, struct channel **pc, struct channel_config *cf)
{
- struct announce_hook *h;
+ struct channel *c = *pc;
- if (p->rt_notify)
- for(h=p->ahooks; h; h=h->next)
- rem_node(&h->n);
+ if (!c && cf)
+ {
+ *pc = proto_add_channel(p, cf);
+ }
+ else if (c && !cf)
+ {
+ if (c->channel_state != CS_DOWN)
+ {
+ log(L_INFO "Cannot remove channel %s.%s", c->proto->name, c->name);
+ return 0;
+ }
+
+ proto_remove_channel(p, c);
+ *pc = NULL;
+ }
+ else if (c && cf)
+ {
+ if (!channel_reconfigure(c, cf))
+ {
+ log(L_INFO "Cannot reconfigure channel %s.%s", c->proto->name, c->name);
+ return 0;
+ }
+ }
+
+ return 1;
}
+
static void
-proto_free_ahooks(struct proto *p)
+proto_event(void *ptr)
{
- struct announce_hook *h, *hn;
+ struct proto *p = ptr;
+
+ if (p->do_start)
+ {
+ if_feed_baby(p);
+ p->do_start = 0;
+ }
- for(h = p->ahooks; h; h = hn)
+ if (p->do_stop)
{
- hn = h->next;
- mb_free(h);
+ if (p->proto == &proto_unix_iface)
+ if_flush_ifaces(p);
+ p->do_stop = 0;
}
- p->ahooks = NULL;
- p->main_ahook = NULL;
+ if (proto_is_done(p))
+ {
+ if (p->proto->cleanup)
+ p->proto->cleanup(p);
+
+ p->active = 0;
+ proto_log_state_change(p);
+ proto_rethink_goal(p);
+ }
+}
+
+
+/**
+ * proto_new - create a new protocol instance
+ * @c: protocol configuration
+ *
+ * When a new configuration has been read in, the core code starts
+ * initializing all the protocol instances configured by calling their
+ * init() hooks with the corresponding instance configuration. The initialization
+ * code of the protocol is expected to create a new instance according to the
+ * configuration by calling this function and then modifying the default settings
+ * to values wanted by the protocol.
+ */
+void *
+proto_new(struct proto_config *cf)
+{
+ struct proto *p = mb_allocz(proto_pool, cf->protocol->proto_size);
+
+ p->cf = cf;
+ p->debug = cf->debug;
+ p->mrtdump = cf->mrtdump;
+ p->name = cf->name;
+ p->proto = cf->protocol;
+ p->net_type = cf->net_type;
+ p->disabled = cf->disabled;
+ p->hash_key = random_u32();
+ cf->proto = p;
+
+ init_list(&p->channels);
+
+ return p;
+}
+
+static struct proto *
+proto_init(struct proto_config *c, node *n)
+{
+ struct protocol *pr = c->protocol;
+ struct proto *p = pr->init(c);
+
+ p->proto_state = PS_DOWN;
+ p->last_state_change = now;
+ insert_node(&p->n, n);
+
+ p->event = ev_new(proto_pool);
+ p->event->hook = proto_event;
+ p->event->data = p;
+
+ PD(p, "Initializing%s", p->disabled ? " [disabled]" : "");
+
+ return p;
+}
+
+static void
+proto_start(struct proto *p)
+{
+ /* Here we cannot use p->cf->name since it won't survive reconfiguration */
+ p->pool = rp_new(proto_pool, p->proto->name);
+
+ if (graceful_restart_state == GRS_INIT)
+ p->gr_recovery = 1;
}
void *
proto_config_new(struct protocol *pr, int class)
{
- struct proto_config *c = cfg_allocz(pr->config_size);
+ struct proto_config *cf = cfg_allocz(pr->config_size);
if (class == SYM_PROTO)
- add_tail(&new_config->protos, &c->n);
- c->global = new_config;
- c->protocol = pr;
- c->name = pr->name;
- c->preference = pr->preference;
- c->class = class;
- c->out_filter = FILTER_REJECT;
- c->table = c->global->master_rtc;
- c->debug = new_config->proto_default_debug;
- c->mrtdump = new_config->proto_default_mrtdump;
- return c;
+ add_tail(&new_config->protos, &cf->n);
+
+ cf->global = new_config;
+ cf->protocol = pr;
+ cf->name = pr->name;
+ cf->class = class;
+ cf->debug = new_config->proto_default_debug;
+ cf->mrtdump = new_config->proto_default_mrtdump;
+
+ init_list(&cf->channels);
+
+ return cf;
}
+
/**
* proto_copy_config - copy a protocol configuration
* @dest: destination protocol configuration
void
proto_copy_config(struct proto_config *dest, struct proto_config *src)
{
+ struct channel_config *cc;
node old_node;
int old_class;
char *old_name;
DBG("Copying configuration from %s to %s\n", src->name, dest->name);
- /*
+ /*
* Copy struct proto_config here. Keep original node, class and name.
* protocol-specific config copy is handled by protocol copy_config() hook
*/
old_class = dest->class;
old_name = dest->name;
- memcpy(dest, src, sizeof(struct proto_config));
+ memcpy(dest, src, src->protocol->config_size);
dest->n = old_node;
dest->class = old_class;
dest->name = old_name;
+ init_list(&dest->channels);
+ WALK_LIST(cc, src->channels)
+ channel_copy_config(cc, dest);
+
+ /* FIXME: allow for undefined copy_config */
dest->protocol->copy_config(dest, src);
}
init_list(&c->protos);
DBG("Protocol preconfig:");
WALK_LIST(p, protocol_list)
- {
- DBG(" %s", p->name);
- p->name_counter = 0;
- if (p->preconfig)
- p->preconfig(p, c);
- }
- DBG("\n");
-}
-
-/**
- * protos_postconfig - post-configuration processing
- * @c: new configuration
- *
- * This function calls the postconfig() hooks of all protocol
- * instances specified in configuration @c. The hooks are not
- * called for protocol templates.
- */
-void
-protos_postconfig(struct config *c)
-{
- struct proto_config *x;
- struct protocol *p;
-
- DBG("Protocol postconfig:");
- WALK_LIST(x, c->protos)
- {
- DBG(" %s", x->name);
-
- p = x->protocol;
- if (p->postconfig)
- p->postconfig(x);
- }
+ {
+ DBG(" %s", p->name);
+ p->name_counter = 0;
+ if (p->preconfig)
+ p->preconfig(p, c);
+ }
DBG("\n");
}
-extern struct protocol proto_unix_iface;
-
-static struct proto *
-proto_init(struct proto_config *c)
-{
- struct protocol *p = c->protocol;
- struct proto *q = p->init(c);
-
- q->proto_state = PS_DOWN;
- q->core_state = FS_HUNGRY;
- q->export_state = ES_DOWN;
- q->last_state_change = now;
-
- add_tail(&initial_proto_list, &q->n);
-
- if (p == &proto_unix_iface)
- initial_device_proto = q;
-
- add_tail(&proto_list, &q->glob_node);
- PD(q, "Initializing%s", q->disabled ? " [disabled]" : "");
- return q;
-}
-
-int proto_reconfig_type; /* Hack to propagate type info to pipe reconfigure hook */
-
static int
proto_reconfigure(struct proto *p, struct proto_config *oc, struct proto_config *nc, int type)
{
/* If there is a too big change in core attributes, ... */
if ((nc->protocol != oc->protocol) ||
- (nc->disabled != p->disabled) ||
- (nc->table->table != oc->table->table))
+ (nc->net_type != oc->net_type) ||
+ (nc->disabled != p->disabled))
+
return 0;
+ p->name = nc->name;
p->debug = nc->debug;
p->mrtdump = nc->mrtdump;
- proto_reconfig_type = type;
+ reconfigure_type = type;
/* Execute protocol specific reconfigure hook */
- if (! (p->proto->reconfigure && p->proto->reconfigure(p, nc)))
+ if (!p->proto->reconfigure || !p->proto->reconfigure(p, nc))
return 0;
DBG("\t%s: same\n", oc->name);
PD(p, "Reconfigured");
p->cf = nc;
- p->name = nc->name;
- p->preference = nc->preference;
-
-
- /* Multitable protocols handle rest in their reconfigure hooks */
- if (p->proto->multitable)
- return 1;
-
- /* Update filters and limits in the main announce hook
- Note that this also resets limit state */
- if (p->main_ahook)
- {
- struct announce_hook *ah = p->main_ahook;
- ah->in_filter = nc->in_filter;
- ah->out_filter = nc->out_filter;
- ah->rx_limit = nc->rx_limit;
- ah->in_limit = nc->in_limit;
- ah->out_limit = nc->out_limit;
- ah->in_keep_filtered = nc->in_keep_filtered;
- proto_verify_limits(ah);
- }
-
- /* Update routes when filters changed. If the protocol in not UP,
- it has no routes and we can ignore such changes */
- if ((p->proto_state != PS_UP) || (type == RECONFIG_SOFT))
- return 1;
-
- int import_changed = ! filter_same(nc->in_filter, oc->in_filter);
- int export_changed = ! filter_same(nc->out_filter, oc->out_filter);
-
- /* We treat a change in preferences by reimporting routes */
- if (nc->preference != oc->preference)
- import_changed = 1;
-
- if (import_changed || export_changed)
- log(L_INFO "Reloading protocol %s", p->name);
-
- /* If import filter changed, call reload hook */
- if (import_changed && ! (p->reload_routes && p->reload_routes(p)))
- {
- /* Now, the protocol is reconfigured. But route reload failed
- and we have to do regular protocol restart. */
- log(L_INFO "Restarting protocol %s", p->name);
- p->disabled = 1;
- p->down_code = PDC_CF_RESTART;
- proto_rethink_goal(p);
- p->disabled = 0;
- proto_rethink_goal(p);
- return 1;
- }
-
- if (export_changed)
- proto_request_feeding(p);
return 1;
}
protos_commit(struct config *new, struct config *old, int force_reconfig, int type)
{
struct proto_config *oc, *nc;
- struct proto *p, *n;
struct symbol *sym;
+ struct proto *p;
+ node *n;
+
DBG("protos_commit:\n");
if (old)
+ {
+ WALK_LIST(oc, old->protos)
{
- WALK_LIST(oc, old->protos)
- {
- p = oc->proto;
- sym = cf_find_symbol(new, oc->name);
- if (sym && sym->class == SYM_PROTO && !new->shutdown)
- {
- /* Found match, let's check if we can smoothly switch to new configuration */
- /* No need to check description */
- nc = sym->def;
- nc->proto = p;
-
- /* We will try to reconfigure protocol p */
- if (! force_reconfig && proto_reconfigure(p, oc, nc, type))
- continue;
-
- /* Unsuccessful, we will restart it */
- if (!p->disabled && !nc->disabled)
- log(L_INFO "Restarting protocol %s", p->name);
- else if (p->disabled && !nc->disabled)
- log(L_INFO "Enabling protocol %s", p->name);
- else if (!p->disabled && nc->disabled)
- log(L_INFO "Disabling protocol %s", p->name);
-
- p->down_code = nc->disabled ? PDC_CF_DISABLE : PDC_CF_RESTART;
- p->cf_new = nc;
- }
- else if (!new->shutdown)
- {
- log(L_INFO "Removing protocol %s", p->name);
- p->down_code = PDC_CF_REMOVE;
- p->cf_new = NULL;
- }
- else /* global shutdown */
- {
- p->down_code = PDC_CMD_SHUTDOWN;
- p->cf_new = NULL;
- }
-
- p->reconfiguring = 1;
- config_add_obstacle(old);
- proto_rethink_goal(p);
- }
+ p = oc->proto;
+ sym = cf_find_symbol(new, oc->name);
+ if (sym && sym->class == SYM_PROTO && !new->shutdown)
+ {
+ /* Found match, let's check if we can smoothly switch to new configuration */
+ /* No need to check description */
+ nc = sym->def;
+ nc->proto = p;
+
+ /* We will try to reconfigure protocol p */
+ if (! force_reconfig && proto_reconfigure(p, oc, nc, type))
+ continue;
+
+ /* Unsuccessful, we will restart it */
+ if (!p->disabled && !nc->disabled)
+ log(L_INFO "Restarting protocol %s", p->name);
+ else if (p->disabled && !nc->disabled)
+ log(L_INFO "Enabling protocol %s", p->name);
+ else if (!p->disabled && nc->disabled)
+ log(L_INFO "Disabling protocol %s", p->name);
+
+ p->down_code = nc->disabled ? PDC_CF_DISABLE : PDC_CF_RESTART;
+ p->cf_new = nc;
+ }
+ else if (!new->shutdown)
+ {
+ log(L_INFO "Removing protocol %s", p->name);
+ p->down_code = PDC_CF_REMOVE;
+ p->cf_new = NULL;
+ }
+ else /* global shutdown */
+ {
+ p->down_code = PDC_CMD_SHUTDOWN;
+ p->cf_new = NULL;
+ }
+
+ p->reconfiguring = 1;
+ config_add_obstacle(old);
+ proto_rethink_goal(p);
}
+ }
+
+ struct proto *first_dev_proto = NULL;
+ n = NODE &(proto_list.head);
WALK_LIST(nc, new->protos)
if (!nc->proto)
- {
- if (old) /* Not a first-time configuration */
- log(L_INFO "Adding protocol %s", nc->name);
- proto_init(nc);
- }
- DBG("\tdone\n");
+ {
+ /* Not a first-time configuration */
+ if (old)
+ log(L_INFO "Adding protocol %s", nc->name);
+
+ p = proto_init(nc, n);
+ n = NODE p;
+
+ if (p->proto == &proto_unix_iface)
+ first_dev_proto = p;
+ }
+ else
+ n = NODE nc->proto;
DBG("Protocol start\n");
/* Start device protocol first */
- if (initial_device_proto)
- {
- proto_rethink_goal(initial_device_proto);
- initial_device_proto = NULL;
- }
+ if (first_dev_proto)
+ proto_rethink_goal(first_dev_proto);
/* Determine router ID for the first time - it has to be here and not in
global_commit() because it is postponed after start of device protocol */
if (!config->router_id)
- {
- config->router_id = if_choose_router_id(config->router_id_from, 0);
- if (!config->router_id)
- die("Cannot determine router ID, please configure it manually");
- }
+ {
+ config->router_id = if_choose_router_id(config->router_id_from, 0);
+ if (!config->router_id)
+ die("Cannot determine router ID, please configure it manually");
+ }
- /* Start all other protocols */
- WALK_LIST_DELSAFE(p, n, initial_proto_list)
+ /* Start all new protocols */
+ WALK_LIST_DELSAFE(p, n, proto_list)
proto_rethink_goal(p);
}
struct protocol *q;
byte goal;
- if (p->reconfiguring && p->core_state == FS_HUNGRY && p->proto_state == PS_DOWN)
- {
- struct proto_config *nc = p->cf_new;
- DBG("%s has shut down for reconfiguration\n", p->name);
- p->cf->proto = NULL;
- config_del_obstacle(p->cf->global);
- rem_node(&p->n);
- rem_node(&p->glob_node);
- mb_free(p);
- if (!nc)
- return;
- p = proto_init(nc);
- }
+ if (p->reconfiguring && !p->active)
+ {
+ struct proto_config *nc = p->cf_new;
+ node *n = p->n.prev;
+ DBG("%s has shut down for reconfiguration\n", p->name);
+ p->cf->proto = NULL;
+ config_del_obstacle(p->cf->global);
+ proto_remove_channels(p);
+ rem_node(&p->n);
+ rfree(p->event);
+ mb_free(p);
+ if (!nc)
+ return;
+ p = proto_init(nc, n);
+ }
/* Determine what state we want to reach */
if (p->disabled || p->reconfiguring)
goal = PS_UP;
q = p->proto;
- if (goal == PS_UP) /* Going up */
+ if (goal == PS_UP)
+ {
+ if (!p->active)
{
- if (p->proto_state == PS_DOWN && p->core_state == FS_HUNGRY)
- {
- DBG("Kicking %s up\n", p->name);
- PD(p, "Starting");
- proto_init_instance(p);
- proto_notify_state(p, (q->start ? q->start(p) : PS_UP));
- }
+ /* Going up */
+ DBG("Kicking %s up\n", p->name);
+ PD(p, "Starting");
+ proto_start(p);
+ proto_notify_state(p, (q->start ? q->start(p) : PS_UP));
}
- else /* Going down */
+ }
+ else
+ {
+ if (p->proto_state == PS_START || p->proto_state == PS_UP)
{
- if (p->proto_state == PS_START || p->proto_state == PS_UP)
- {
- DBG("Kicking %s down\n", p->name);
- PD(p, "Shutting down");
- proto_notify_state(p, (q->shutdown ? q->shutdown(p) : PS_DOWN));
- }
+ /* Going down */
+ DBG("Kicking %s down\n", p->name);
+ PD(p, "Shutting down");
+ proto_notify_state(p, (q->shutdown ? q->shutdown(p) : PS_DOWN));
}
+ }
}
* When graceful restart recovery need is detected during initialization, then
* enabled protocols are marked with @gr_recovery flag before start. Such
* protocols then decide how to proceed with graceful restart, participation is
- * voluntary. Protocols could lock the recovery by proto_graceful_restart_lock()
- * (stored in @gr_lock flag), which means that they want to postpone the end of
- * the recovery until they converge and then unlock it. They also could set
- * @gr_wait before advancing to %PS_UP, which means that the core should defer
- * route export to that protocol until the end of the recovery. This should be
- * done by protocols that expect their neigbors to keep the proper routes
- * (kernel table, BGP sessions with BGP graceful restart capability).
+ * voluntary. Protocols could lock the recovery for each channel by function
+ * channel_graceful_restart_lock() (starte stored in @gr_lock flag), which means
+ * that they want to postpone the end of the recovery until they converge and
+ * then unlock it. They also could set @gr_wait before advancing to %PS_UP,
+ * which means that the core should defer route export to that channel until
+ * the end of the recovery. This should be done by protocols that expect their
+ * neigbors to keep the proper routes (kernel table, BGP sessions with BGP
+ * graceful restart capability).
*
* The graceful restart recovery is finished when either all graceful restart
* locks are unlocked or when graceful restart wait timer fires.
log(L_INFO "Graceful restart started");
if (!graceful_restart_locks)
- {
- graceful_restart_done(NULL);
- return;
- }
+ {
+ graceful_restart_done(NULL);
+ return;
+ }
graceful_restart_state = GRS_ACTIVE;
gr_wait_timer = tm_new(proto_pool);
static void
graceful_restart_done(struct timer *t UNUSED)
{
- struct proto *p;
- node *n;
-
log(L_INFO "Graceful restart done");
graceful_restart_state = GRS_DONE;
- WALK_LIST2(p, n, proto_list, glob_node)
- {
- if (!p->gr_recovery)
- continue;
+ struct proto *p;
+ WALK_LIST(p, proto_list)
+ {
+ if (!p->gr_recovery)
+ continue;
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ {
/* Resume postponed export of routes */
- if ((p->proto_state == PS_UP) && p->gr_wait)
- {
- proto_want_export_up(p);
- proto_log_state_change(p);
- }
+ if ((c->channel_state == CS_UP) && c->gr_wait)
+ channel_start_export(c);
/* Cleanup */
- p->gr_recovery = 0;
- p->gr_wait = 0;
- p->gr_lock = 0;
+ c->gr_wait = 0;
+ c->gr_lock = 0;
}
+ p->gr_recovery = 0;
+ }
+
graceful_restart_locks = 0;
}
return;
cli_msg(-24, "Graceful restart recovery in progress");
- cli_msg(-24, " Waiting for %d protocols to recover", graceful_restart_locks);
+ cli_msg(-24, " Waiting for %d channels to recover", graceful_restart_locks);
cli_msg(-24, " Wait timer is %d/%d", tm_remains(gr_wait_timer), config->gr_wait);
}
/**
- * proto_graceful_restart_lock - lock graceful restart by protocol
- * @p: protocol instance
+ * channel_graceful_restart_lock - lock graceful restart by channel
+ * @p: channel instance
*
* This function allows a protocol to postpone the end of graceful restart
* recovery until it converges. The lock is removed when the protocol calls
- * proto_graceful_restart_unlock() or when the protocol is stopped.
+ * channel_graceful_restart_unlock() or when the channel is closed.
*
* The function have to be called during the initial phase of graceful restart
* recovery and only for protocols that are part of graceful restart (i.e. their
* hooks.
*/
void
-proto_graceful_restart_lock(struct proto *p)
+channel_graceful_restart_lock(struct channel *c)
{
ASSERT(graceful_restart_state == GRS_INIT);
- ASSERT(p->gr_recovery);
+ ASSERT(c->proto->gr_recovery);
- if (p->gr_lock)
+ if (c->gr_lock)
return;
- p->gr_lock = 1;
+ c->gr_lock = 1;
graceful_restart_locks++;
}
/**
- * proto_graceful_restart_unlock - unlock graceful restart by protocol
- * @p: protocol instance
+ * channel_graceful_restart_unlock - unlock graceful restart by channel
+ * @p: channel instance
*
- * This function unlocks a lock from proto_graceful_restart_lock(). It is also
+ * This function unlocks a lock from channel_graceful_restart_lock(). It is also
* automatically called when the lock holding protocol went down.
*/
void
-proto_graceful_restart_unlock(struct proto *p)
+channel_graceful_restart_unlock(struct channel *c)
{
- if (!p->gr_lock)
+ if (!c->gr_lock)
return;
- p->gr_lock = 0;
+ c->gr_lock = 0;
graceful_restart_locks--;
if ((graceful_restart_state == GRS_ACTIVE) && !graceful_restart_locks)
void
protos_dump_all(void)
{
- struct proto *p;
- struct announce_hook *a;
-
debug("Protocols:\n");
- WALK_LIST(p, active_proto_list)
+ struct proto *p;
+ WALK_LIST(p, proto_list)
+ {
+ debug(" protocol %s state %s\n", p->name, p_states[p->proto_state]);
+
+ struct channel *c;
+ WALK_LIST(c, p->channels)
{
- debug(" protocol %s state %s/%s\n", p->name,
- p_states[p->proto_state], c_states[p->core_state]);
- for (a = p->ahooks; a; a = a->next)
- {
- debug("\tTABLE %s\n", a->table->name);
- if (a->in_filter)
- debug("\tInput filter: %s\n", filter_name(a->in_filter));
- if (a->out_filter != FILTER_REJECT)
- debug("\tOutput filter: %s\n", filter_name(a->out_filter));
- }
- if (p->disabled)
- debug("\tDISABLED\n");
- else if (p->proto->dump)
- p->proto->dump(p);
+ debug("\tTABLE %s\n", c->table->name);
+ if (c->in_filter)
+ debug("\tInput filter: %s\n", filter_name(c->in_filter));
+ if (c->out_filter)
+ debug("\tOutput filter: %s\n", filter_name(c->out_filter));
}
- WALK_LIST(p, inactive_proto_list)
- debug(" inactive %s: state %s/%s\n", p->name, p_states[p->proto_state], c_states[p->core_state]);
- WALK_LIST(p, initial_proto_list)
- debug(" initial %s\n", p->name);
- WALK_LIST(p, flush_proto_list)
- debug(" flushing %s\n", p->name);
+
+ if (p->proto->dump && (p->proto_state != PS_DOWN))
+ p->proto->dump(p);
+ }
}
/**
void
protos_build(void)
{
- init_list(&protocol_list);
init_list(&proto_list);
- init_list(&active_proto_list);
- init_list(&inactive_proto_list);
- init_list(&initial_proto_list);
- init_list(&flush_proto_list);
+ init_list(&protocol_list);
+
proto_build(&proto_device);
#ifdef CONFIG_RADV
proto_build(&proto_radv);
#endif
proto_pool = rp_new(&root_pool, "Protocols");
- proto_flush_event = ev_new(proto_pool);
- proto_flush_event->hook = proto_flush_loop;
proto_shutdown_timer = tm_new(proto_pool);
proto_shutdown_timer->hook = proto_shutdown_loop;
}
-static void
-proto_feed_more(void *P)
-{
- struct proto *p = P;
-
- if (p->export_state != ES_FEEDING)
- return;
-
- DBG("Feeding protocol %s continued\n", p->name);
- if (rt_feed_baby(p))
- {
- DBG("Feeding protocol %s finished\n", p->name);
- p->export_state = ES_READY;
- proto_log_state_change(p);
-
- if (p->feed_end)
- p->feed_end(p);
- }
- else
- {
- p->attn->hook = proto_feed_more;
- ev_schedule(p->attn); /* Will continue later... */
- }
-}
-
-static void
-proto_feed_initial(void *P)
-{
- struct proto *p = P;
-
- if (p->export_state != ES_FEEDING)
- return;
-
- DBG("Feeding protocol %s\n", p->name);
-
- if_feed_baby(p);
- proto_feed_more(P);
-}
-
-static void
-proto_schedule_feed(struct proto *p, int initial)
-{
- DBG("%s: Scheduling meal\n", p->name);
-
- p->export_state = ES_FEEDING;
- p->refeeding = !initial;
-
- p->attn->hook = initial ? proto_feed_initial : proto_feed_more;
- ev_schedule(p->attn);
-
- if (p->feed_begin)
- p->feed_begin(p, initial);
-}
-
-/*
- * Flushing loop is responsible for flushing routes and protocols
- * after they went down. It runs in proto_flush_event. At the start of
- * one round, protocols waiting to flush are marked in
- * proto_schedule_flush_loop(). At the end of the round (when routing
- * table flush is complete), marked protocols are flushed and a next
- * round may start.
- */
-
-static int flush_loop_state; /* 1 -> running */
-
-static void
-proto_schedule_flush_loop(void)
-{
- struct proto *p;
- struct announce_hook *h;
-
- if (flush_loop_state)
- return;
- flush_loop_state = 1;
-
- WALK_LIST(p, flush_proto_list)
- {
- p->flushing = 1;
- for (h=p->ahooks; h; h=h->next)
- rt_mark_for_prune(h->table);
- }
-
- ev_schedule(proto_flush_event);
-}
-
-static void
-proto_flush_loop(void *unused UNUSED)
-{
- struct proto *p;
-
- if (! rt_prune_loop())
- {
- /* Rtable pruning is not finished */
- ev_schedule(proto_flush_event);
- return;
- }
-
- rt_prune_sources();
-
- again:
- WALK_LIST(p, flush_proto_list)
- if (p->flushing)
- {
- /* This will flush interfaces in the same manner
- like rt_prune_all() flushes routes */
- if (p->proto == &proto_unix_iface)
- if_flush_ifaces(p);
-
- DBG("Flushing protocol %s\n", p->name);
- p->flushing = 0;
- p->core_state = FS_HUNGRY;
- proto_relink(p);
- proto_log_state_change(p);
- if (p->proto_state == PS_DOWN)
- proto_fell_down(p);
- goto again;
- }
-
- /* This round finished, perhaps there will be another one */
- flush_loop_state = 0;
- if (!EMPTY_LIST(flush_proto_list))
- proto_schedule_flush_loop();
-}
-
/* Temporary hack to propagate restart to BGP */
int proto_restart;
{
struct proto *p, *p_next;
- WALK_LIST_DELSAFE(p, p_next, active_proto_list)
+ WALK_LIST_DELSAFE(p, p_next, proto_list)
if (p->down_sched)
- {
- proto_restart = (p->down_sched == PDS_RESTART);
+ {
+ proto_restart = (p->down_sched == PDS_RESTART);
- p->disabled = 1;
+ p->disabled = 1;
+ proto_rethink_goal(p);
+ if (proto_restart)
+ {
+ p->disabled = 0;
proto_rethink_goal(p);
- if (proto_restart)
- {
- p->disabled = 0;
- proto_rethink_goal(p);
- }
}
+ }
}
static inline void
}
-/**
- * proto_request_feeding - request feeding routes to the protocol
- * @p: given protocol
- *
- * Sometimes it is needed to send again all routes to the
- * protocol. This is called feeding and can be requested by this
- * function. This would cause protocol export state transition
- * to ES_FEEDING (during feeding) and when completed, it will
- * switch back to ES_READY. This function can be called even
- * when feeding is already running, in that case it is restarted.
- */
-void
-proto_request_feeding(struct proto *p)
-{
- ASSERT(p->proto_state == PS_UP);
-
- /* Do nothing if we are still waiting for feeding */
- if (p->export_state == ES_DOWN)
- return;
-
- /* If we are already feeding, we want to restart it */
- if (p->export_state == ES_FEEDING)
- {
- /* Unless feeding is in initial state */
- if (p->attn->hook == proto_feed_initial)
- return;
-
- rt_feed_baby_abort(p);
- }
-
- /* FIXME: This should be changed for better support of multitable protos */
- struct announce_hook *ah;
- for (ah = p->ahooks; ah; ah = ah->next)
- proto_reset_limit(ah->out_limit);
-
- /* Hack: reset exp_routes during refeed, and do not decrease it later */
- p->stats.exp_routes = 0;
-
- proto_schedule_feed(p, 0);
- proto_log_state_change(p);
-}
-
static const char *
-proto_limit_name(struct proto_limit *l)
+channel_limit_name(struct channel_limit *l)
{
const char *actions[] = {
[PLA_WARN] = "warn",
}
/**
- * proto_notify_limit: notify about limit hit and take appropriate action
- * @ah: announce hook
+ * channel_notify_limit: notify about limit hit and take appropriate action
+ * @c: channel
* @l: limit being hit
* @dir: limit direction (PLD_*)
- * @rt_count: the number of routes
+ * @rt_count: the number of routes
*
* The function is called by the route processing core when limit @l
* is breached. It activates the limit and tooks appropriate action
* according to @l->action.
*/
void
-proto_notify_limit(struct announce_hook *ah, struct proto_limit *l, int dir, u32 rt_count)
+channel_notify_limit(struct channel *c, struct channel_limit *l, int dir, u32 rt_count)
{
const char *dir_name[PLD_MAX] = { "receive", "import" , "export" };
const byte dir_down[PLD_MAX] = { PDC_RX_LIMIT_HIT, PDC_IN_LIMIT_HIT, PDC_OUT_LIMIT_HIT };
- struct proto *p = ah->proto;
+ struct proto *p = c->proto;
if (l->state == PLS_BLOCKED)
return;
/* For warning action, we want the log message every time we hit the limit */
if (!l->state || ((l->action == PLA_WARN) && (rt_count == l->limit)))
log(L_WARN "Protocol %s hits route %s limit (%d), action: %s",
- p->name, dir_name[dir], l->limit, proto_limit_name(l));
+ p->name, dir_name[dir], l->limit, channel_limit_name(l));
switch (l->action)
- {
- case PLA_WARN:
- l->state = PLS_ACTIVE;
- break;
-
- case PLA_BLOCK:
- l->state = PLS_BLOCKED;
- break;
-
- case PLA_RESTART:
- case PLA_DISABLE:
- l->state = PLS_BLOCKED;
- if (p->proto_state == PS_UP)
- proto_schedule_down(p, l->action == PLA_RESTART, dir_down[dir]);
- break;
- }
+ {
+ case PLA_WARN:
+ l->state = PLS_ACTIVE;
+ break;
+
+ case PLA_BLOCK:
+ l->state = PLS_BLOCKED;
+ break;
+
+ case PLA_RESTART:
+ case PLA_DISABLE:
+ l->state = PLS_BLOCKED;
+ if (p->proto_state == PS_UP)
+ proto_schedule_down(p, l->action == PLA_RESTART, dir_down[dir]);
+ break;
+ }
}
-void
-proto_verify_limits(struct announce_hook *ah)
+static void
+channel_verify_limits(struct channel *c)
{
- struct proto_limit *l;
- struct proto_stats *stats = ah->stats;
- u32 all_routes = stats->imp_routes + stats->filt_routes;
+ struct channel_limit *l;
+ u32 all_routes = c->stats.imp_routes + c->stats.filt_routes;
- l = ah->rx_limit;
- if (l && (all_routes > l->limit))
- proto_notify_limit(ah, l, PLD_RX, all_routes);
+ l = &c->rx_limit;
+ if (l->action && (all_routes > l->limit))
+ channel_notify_limit(c, l, PLD_RX, all_routes);
- l = ah->in_limit;
- if (l && (stats->imp_routes > l->limit))
- proto_notify_limit(ah, l, PLD_IN, stats->imp_routes);
+ l = &c->in_limit;
+ if (l->action && (c->stats.imp_routes > l->limit))
+ channel_notify_limit(c, l, PLD_IN, c->stats.imp_routes);
- l = ah->out_limit;
- if (l && (stats->exp_routes > l->limit))
- proto_notify_limit(ah, l, PLD_OUT, stats->exp_routes);
+ l = &c->out_limit;
+ if (l->action && (c->stats.exp_routes > l->limit))
+ channel_notify_limit(c, l, PLD_OUT, c->stats.exp_routes);
}
-
-static void
-proto_want_core_up(struct proto *p)
+static inline void
+channel_reset_limit(struct channel_limit *l)
{
- ASSERT(p->core_state == FS_HUNGRY);
-
- if (!p->proto->multitable)
- {
- p->main_source = rt_get_source(p, 0);
- rt_lock_source(p->main_source);
-
- /* Connect protocol to routing table */
- p->main_ahook = proto_add_announce_hook(p, p->table, &p->stats);
- p->main_ahook->in_filter = p->cf->in_filter;
- p->main_ahook->out_filter = p->cf->out_filter;
- p->main_ahook->rx_limit = p->cf->rx_limit;
- p->main_ahook->in_limit = p->cf->in_limit;
- p->main_ahook->out_limit = p->cf->out_limit;
- p->main_ahook->in_keep_filtered = p->cf->in_keep_filtered;
-
- proto_reset_limit(p->main_ahook->rx_limit);
- proto_reset_limit(p->main_ahook->in_limit);
- proto_reset_limit(p->main_ahook->out_limit);
- }
-
- p->core_state = FS_HAPPY;
- proto_relink(p);
+ if (l->action)
+ l->state = PLS_INITIAL;
}
-static void
-proto_want_export_up(struct proto *p)
+static inline void
+proto_do_start(struct proto *p)
{
- ASSERT(p->core_state == FS_HAPPY);
- ASSERT(p->export_state == ES_DOWN);
-
- proto_link_ahooks(p);
- proto_schedule_feed(p, 1); /* Sets ES_FEEDING */
+ p->active = 1;
+ p->do_start = 1;
+ ev_schedule(p->event);
}
static void
-proto_want_export_down(struct proto *p)
+proto_do_up(struct proto *p)
{
- ASSERT(p->export_state != ES_DOWN);
-
- /* Need to abort feeding */
- if (p->export_state == ES_FEEDING)
- rt_feed_baby_abort(p);
+ if (!p->main_source)
+ {
+ p->main_source = rt_get_source(p, 0);
+ rt_lock_source(p->main_source);
+ }
- p->export_state = ES_DOWN;
- proto_unlink_ahooks(p);
+ proto_start_channels(p);
}
-static void
-proto_want_core_down(struct proto *p)
+static inline void
+proto_do_pause(struct proto *p)
{
- ASSERT(p->core_state == FS_HAPPY);
- ASSERT(p->export_state == ES_DOWN);
-
- p->core_state = FS_FLUSHING;
- proto_relink(p);
- proto_schedule_flush_loop();
-
- if (!p->proto->multitable)
- {
- rt_unlock_source(p->main_source);
- p->main_source = NULL;
- }
+ proto_pause_channels(p);
}
static void
-proto_falling_down(struct proto *p)
+proto_do_stop(struct proto *p)
{
+ p->down_sched = 0;
p->gr_recovery = 0;
- p->gr_wait = 0;
- if (p->gr_lock)
- proto_graceful_restart_unlock(p);
-}
-
-static void
-proto_fell_down(struct proto *p)
-{
- DBG("Protocol %s down\n", p->name);
-
- u32 all_routes = p->stats.imp_routes + p->stats.filt_routes;
- if (all_routes != 0)
- log(L_ERR "Protocol %s is down but still has %d routes", p->name, all_routes);
- bzero(&p->stats, sizeof(struct proto_stats));
- proto_free_ahooks(p);
+ p->do_stop = 1;
+ ev_schedule(p->event);
- if (! p->proto->multitable)
- rt_unlock_table(p->table);
+ if (p->main_source)
+ {
+ rt_unlock_source(p->main_source);
+ p->main_source = NULL;
+ }
- if (p->proto->cleanup)
- p->proto->cleanup(p);
+ proto_stop_channels(p);
+}
- proto_rethink_goal(p);
+static void
+proto_do_down(struct proto *p)
+{
+ p->down_code = 0;
+ neigh_prune();
+ rfree(p->pool);
+ p->pool = NULL;
+
+ /* Shutdown is finished in the protocol event */
+ if (proto_is_done(p))
+ ev_schedule(p->event);
}
+
/**
* proto_notify_state - notify core about protocol state change
* @p: protocol the state of which has changed
* it should be used at tail positions of protocol callbacks.
*/
void
-proto_notify_state(struct proto *p, unsigned ps)
+proto_notify_state(struct proto *p, uint state)
{
- unsigned ops = p->proto_state;
- unsigned cs = p->core_state;
- unsigned es = p->export_state;
+ uint ps = p->proto_state;
- DBG("%s reporting state transition %s/%s -> */%s\n", p->name, c_states[cs], p_states[ops], p_states[ps]);
- if (ops == ps)
+ DBG("%s reporting state transition %s -> %s\n", p->name, p_states[ps], p_states[state]);
+ if (state == ps)
return;
- p->proto_state = ps;
+ p->proto_state = state;
p->last_state_change = now;
- switch (ps)
- {
- case PS_START:
- ASSERT(ops == PS_DOWN || ops == PS_UP);
- ASSERT(cs == FS_HUNGRY || cs == FS_HAPPY);
-
- if (es != ES_DOWN)
- proto_want_export_down(p);
- break;
-
- case PS_UP:
- ASSERT(ops == PS_DOWN || ops == PS_START);
- ASSERT(cs == FS_HUNGRY || cs == FS_HAPPY);
- ASSERT(es == ES_DOWN);
-
- if (cs == FS_HUNGRY)
- proto_want_core_up(p);
- if (!p->gr_wait)
- proto_want_export_up(p);
- break;
-
- case PS_STOP:
- ASSERT(ops == PS_START || ops == PS_UP);
-
- p->down_sched = 0;
-
- if (es != ES_DOWN)
- proto_want_export_down(p);
- if (cs == FS_HAPPY)
- proto_want_core_down(p);
- proto_falling_down(p);
- break;
-
- case PS_DOWN:
- p->down_code = 0;
- p->down_sched = 0;
-
- if (es != ES_DOWN)
- proto_want_export_down(p);
- if (cs == FS_HAPPY)
- proto_want_core_down(p);
- if (ops != PS_STOP)
- proto_falling_down(p);
-
- neigh_prune(); // FIXME convert neighbors to resource?
- rfree(p->pool);
- p->pool = NULL;
-
- if (cs == FS_HUNGRY) /* Shutdown finished */
- {
- proto_log_state_change(p);
- proto_fell_down(p);
- return; /* The protocol might have ceased to exist */
- }
- break;
-
- default:
- bug("%s: Invalid state %d", p->name, ps);
- }
+ switch (state)
+ {
+ case PS_START:
+ ASSERT(ps == PS_DOWN || ps == PS_UP);
+
+ if (ps == PS_DOWN)
+ proto_do_start(p);
+ else
+ proto_do_pause(p);
+ break;
+
+ case PS_UP:
+ ASSERT(ps == PS_DOWN || ps == PS_START);
+
+ if (ps == PS_DOWN)
+ proto_do_start(p);
+
+ proto_do_up(p);
+ break;
+
+ case PS_STOP:
+ ASSERT(ps == PS_START || ps == PS_UP);
+
+ proto_do_stop(p);
+ break;
+
+ case PS_DOWN:
+ if (ps != PS_STOP)
+ proto_do_stop(p);
+
+ proto_do_down(p);
+ break;
+
+ default:
+ bug("%s: Invalid state %d", p->name, ps);
+ }
proto_log_state_change(p);
}
static char *
proto_state_name(struct proto *p)
{
-#define P(x,y) ((x << 4) | y)
- switch (P(p->proto_state, p->core_state))
- {
- case P(PS_DOWN, FS_HUNGRY): return "down";
- case P(PS_START, FS_HUNGRY):
- case P(PS_START, FS_HAPPY): return "start";
- case P(PS_UP, FS_HAPPY):
- switch (p->export_state)
- {
- case ES_DOWN: return "wait";
- case ES_FEEDING: return "feed";
- case ES_READY: return "up";
- default: return "???";
- }
- case P(PS_STOP, FS_HUNGRY):
- case P(PS_STOP, FS_FLUSHING): return "stop";
- case P(PS_DOWN, FS_FLUSHING): return "flush";
- default: return "???";
- }
-#undef P
+ switch (p->proto_state)
+ {
+ case PS_DOWN: return p->active ? "flush" : "down";
+ case PS_START: return "start";
+ case PS_UP: return "up";
+ case PS_STOP: return "stop";
+ default: return "???";
+ }
}
static void
-proto_show_stats(struct proto_stats *s, int in_keep_filtered)
+channel_show_stats(struct channel *c)
{
- if (in_keep_filtered)
- cli_msg(-1006, " Routes: %u imported, %u filtered, %u exported, %u preferred",
- s->imp_routes, s->filt_routes, s->exp_routes, s->pref_routes);
+ struct proto_stats *s = &c->stats;
+
+ if (c->in_keep_filtered)
+ cli_msg(-1006, " Routes: %u imported, %u filtered, %u exported",
+ s->imp_routes, s->filt_routes, s->exp_routes);
else
- cli_msg(-1006, " Routes: %u imported, %u exported, %u preferred",
- s->imp_routes, s->exp_routes, s->pref_routes);
+ cli_msg(-1006, " Routes: %u imported, %u exported",
+ s->imp_routes, s->exp_routes);
- cli_msg(-1006, " Route change stats: received rejected filtered ignored accepted");
- cli_msg(-1006, " Import updates: %10u %10u %10u %10u %10u",
+ cli_msg(-1006, " Route change stats: received rejected filtered ignored accepted");
+ cli_msg(-1006, " Import updates: %10u %10u %10u %10u %10u",
s->imp_updates_received, s->imp_updates_invalid,
s->imp_updates_filtered, s->imp_updates_ignored,
s->imp_updates_accepted);
- cli_msg(-1006, " Import withdraws: %10u %10u --- %10u %10u",
+ cli_msg(-1006, " Import withdraws: %10u %10u --- %10u %10u",
s->imp_withdraws_received, s->imp_withdraws_invalid,
s->imp_withdraws_ignored, s->imp_withdraws_accepted);
- cli_msg(-1006, " Export updates: %10u %10u %10u --- %10u",
+ cli_msg(-1006, " Export updates: %10u %10u %10u --- %10u",
s->exp_updates_received, s->exp_updates_rejected,
s->exp_updates_filtered, s->exp_updates_accepted);
- cli_msg(-1006, " Export withdraws: %10u --- --- --- %10u",
+ cli_msg(-1006, " Export withdraws: %10u --- --- --- %10u",
s->exp_withdraws_received, s->exp_withdraws_accepted);
}
void
-proto_show_limit(struct proto_limit *l, const char *dsc)
+channel_show_limit(struct channel_limit *l, const char *dsc)
{
- if (!l)
+ if (!l->action)
return;
- cli_msg(-1006, " %-16s%d%s", dsc, l->limit, l->state ? " [HIT]" : "");
- cli_msg(-1006, " Action: %s", proto_limit_name(l));
+ cli_msg(-1006, " %-16s%d%s", dsc, l->limit, l->state ? " [HIT]" : "");
+ cli_msg(-1006, " Action: %s", channel_limit_name(l));
}
void
-proto_show_basic_info(struct proto *p)
+channel_show_info(struct channel *c)
{
- // cli_msg(-1006, " Table: %s", p->table->name);
- cli_msg(-1006, " Preference: %d", p->preference);
- cli_msg(-1006, " Input filter: %s", filter_name(p->cf->in_filter));
- cli_msg(-1006, " Output filter: %s", filter_name(p->cf->out_filter));
+ cli_msg(-1006, " Channel %s", c->name);
+ cli_msg(-1006, " Table: %s", c->table->name);
+ cli_msg(-1006, " Preference: %d", c->preference);
+ cli_msg(-1006, " Input filter: %s", filter_name(c->in_filter));
+ cli_msg(-1006, " Output filter: %s", filter_name(c->out_filter));
if (graceful_restart_state == GRS_ACTIVE)
- cli_msg(-1006, " GR recovery: %s%s",
- p->gr_lock ? " pending" : "",
- p->gr_wait ? " waiting" : "");
+ cli_msg(-1006, " GR recovery: %s%s",
+ c->gr_lock ? " pending" : "",
+ c->gr_wait ? " waiting" : "");
- proto_show_limit(p->cf->rx_limit, "Receive limit:");
- proto_show_limit(p->cf->in_limit, "Import limit:");
- proto_show_limit(p->cf->out_limit, "Export limit:");
+ channel_show_limit(&c->rx_limit, "Receive limit:");
+ channel_show_limit(&c->in_limit, "Import limit:");
+ channel_show_limit(&c->out_limit, "Export limit:");
- if (p->proto_state != PS_DOWN)
- proto_show_stats(&p->stats, p->cf->in_keep_filtered);
+ if (c->channel_state != CS_DOWN)
+ channel_show_stats(c);
}
void
cli_msg(-1002, "%-8s %-8s %-8s %-5s %-10s %s",
p->name,
p->proto->name,
- p->table->name,
+ p->main_channel ? p->main_channel->table->name : "---",
proto_state_name(p),
tbuf,
buf);
+
if (verbose)
+ {
+ if (p->cf->dsc)
+ cli_msg(-1006, " Description: %s", p->cf->dsc);
+ if (p->cf->router_id)
+ cli_msg(-1006, " Router ID: %R", p->cf->router_id);
+
+ if (p->proto->show_proto_info)
+ p->proto->show_proto_info(p);
+ else
{
- if (p->cf->dsc)
- cli_msg(-1006, " Description: %s", p->cf->dsc);
- if (p->cf->router_id)
- cli_msg(-1006, " Router ID: %R", p->cf->router_id);
-
- if (p->proto->show_proto_info)
- p->proto->show_proto_info(p);
- else
- proto_show_basic_info(p);
-
- cli_msg(-1006, "");
+ struct channel *c;
+ WALK_LIST(c, p->channels)
+ channel_show_info(c);
}
+
+ cli_msg(-1006, "");
+ }
}
void
proto_cmd_disable(struct proto *p, uint arg UNUSED, int cnt UNUSED)
{
if (p->disabled)
- {
- cli_msg(-8, "%s: already disabled", p->name);
- return;
- }
+ {
+ cli_msg(-8, "%s: already disabled", p->name);
+ return;
+ }
log(L_INFO "Disabling protocol %s", p->name);
p->disabled = 1;
proto_cmd_enable(struct proto *p, uint arg UNUSED, int cnt UNUSED)
{
if (!p->disabled)
- {
- cli_msg(-10, "%s: already enabled", p->name);
- return;
- }
+ {
+ cli_msg(-10, "%s: already enabled", p->name);
+ return;
+ }
log(L_INFO "Enabling protocol %s", p->name);
p->disabled = 0;
proto_cmd_restart(struct proto *p, uint arg UNUSED, int cnt UNUSED)
{
if (p->disabled)
- {
- cli_msg(-8, "%s: already disabled", p->name);
- return;
- }
+ {
+ cli_msg(-8, "%s: already disabled", p->name);
+ return;
+ }
log(L_INFO "Restarting protocol %s", p->name);
p->disabled = 1;
void
proto_cmd_reload(struct proto *p, uint dir, int cnt UNUSED)
{
+ struct channel *c;
+
if (p->disabled)
- {
- cli_msg(-8, "%s: already disabled", p->name);
- return;
- }
+ {
+ cli_msg(-8, "%s: already disabled", p->name);
+ return;
+ }
/* If the protocol in not UP, it has no routes */
if (p->proto_state != PS_UP)
return;
+ /* All channels must support reload */
+ if (dir != CMD_RELOAD_OUT)
+ WALK_LIST(c, p->channels)
+ if (!channel_reloadable(c))
+ {
+ cli_msg(-8006, "%s: reload failed", p->name);
+ return;
+ }
+
log(L_INFO "Reloading protocol %s", p->name);
/* re-importing routes */
if (dir != CMD_RELOAD_OUT)
- {
- if (! (p->reload_routes && p->reload_routes(p)))
- {
- cli_msg(-8006, "%s: reload failed", p->name);
- return;
- }
-
- /*
- * Should be done before reload_routes() hook?
- * Perhaps, but these hooks work asynchronously.
- */
- if (!p->proto->multitable)
- {
- proto_reset_limit(p->main_ahook->rx_limit);
- proto_reset_limit(p->main_ahook->in_limit);
- }
- }
+ WALK_LIST(c, p->channels)
+ channel_request_reload(c);
/* re-exporting routes */
if (dir != CMD_RELOAD_IN)
- proto_request_feeding(p);
+ WALK_LIST(c, p->channels)
+ channel_request_feeding(c);
cli_msg(-15, "%s: reloading", p->name);
}
proto_apply_cmd_symbol(struct symbol *s, void (* cmd)(struct proto *, uint, int), uint arg)
{
if (s->class != SYM_PROTO)
- {
- cli_msg(9002, "%s is not a protocol", s->name);
- return;
- }
+ {
+ cli_msg(9002, "%s is not a protocol", s->name);
+ return;
+ }
cmd(((struct proto_config *)s->def)->proto, arg, 0);
cli_msg(0, "");
static void
proto_apply_cmd_patt(char *patt, void (* cmd)(struct proto *, uint, int), uint arg)
{
+ struct proto *p;
int cnt = 0;
- node *nn;
- WALK_LIST(nn, proto_list)
- {
- struct proto *p = SKIP_BACK(struct proto, glob_node, nn);
-
- if (!patt || patmatch(patt, p->name))
- cmd(p, arg, cnt++);
- }
+ WALK_LIST(p, proto_list)
+ if (!patt || patmatch(patt, p->name))
+ cmd(p, arg, cnt++);
if (!cnt)
cli_msg(8003, "No protocols match");
struct proto *p, *q;
if (sym)
- {
- if (sym->class != SYM_PROTO)
- cf_error("%s: Not a protocol", sym->name);
- p = ((struct proto_config *)sym->def)->proto;
- if (!p || p->proto != pr)
- cf_error("%s: Not a %s protocol", sym->name, pr->name);
- }
+ {
+ if (sym->class != SYM_PROTO)
+ cf_error("%s: Not a protocol", sym->name);
+
+ p = ((struct proto_config *) sym->def)->proto;
+ if (!p || p->proto != pr)
+ cf_error("%s: Not a %s protocol", sym->name, pr->name);
+ }
else
- {
- p = NULL;
- WALK_LIST(q, active_proto_list)
- if (q->proto == pr)
- {
- if (p)
- cf_error("There are multiple %s protocols running", pr->name);
- p = q;
- }
- if (!p)
- cf_error("There is no %s protocol running", pr->name);
- }
+ {
+ p = NULL;
+ WALK_LIST(q, proto_list)
+ if ((q->proto == pr) && (q->proto_state != PS_DOWN))
+ {
+ if (p)
+ cf_error("There are multiple %s protocols running", pr->name);
+ p = q;
+ }
+ if (!p)
+ cf_error("There is no %s protocol running", pr->name);
+ }
+
return p;
}
<p>At any time, the core code can ask the protocol to shut itself down by calling its stop() hook.
-<p>The <em/core state machine/ takes care of the core view of protocol state.
-The states are traversed according to changes of the protocol state machine, but
-sometimes the transitions are delayed if the core needs to finish some actions
-(for example sending of new routes to the protocol) before proceeding to the
-new state. There are the following core states:
-
-<descrip>
- <tag/FS_HUNGRY/ The protocol is down, it doesn't have any routes and
- doesn't want them.
- <tag/FS_FEEDING/ The protocol has reached the <tt/PS_UP/ state, but
- we are still busy sending the initial set of routes to it.
- <tag/FS_HAPPY/ The protocol is up and has complete routing information.
- <tag/FS_FLUSHING/ The protocol is shutting down (it's in either <tt/PS_STOP/
- or <tt/PS_DOWN/ state) and we're flushing all of its routes from the
- routing tables.
-</descrip>
-
<sect1>Functions of the protocol module
<p>The protocol module provides the following functions:
#include "lib/lists.h"
#include "lib/resource.h"
+#include "lib/event.h"
#include "lib/timer.h"
+#include "nest/route.h"
#include "conf/conf.h"
struct iface;
struct rta;
struct network;
struct proto_config;
+struct channel_limit;
+struct channel_config;
struct config;
struct proto;
-struct event;
+struct channel;
struct ea_list;
struct eattr;
struct symbol;
+
/*
* Routing Protocol
*/
char *template; /* Template for automatic generation of names */
int name_counter; /* Counter for automatic name generation */
int attr_class; /* Attribute class known to this protocol */
- int multitable; /* Protocol handles all announce hooks itself */
uint preference; /* Default protocol preference */
- uint config_size; /* Size of protocol config */
+ uint channel_mask; /* Mask of accepted channel types (NB_*) */
+ uint proto_size; /* Size of protocol data structure */
+ uint config_size; /* Size of protocol config data structure */
void (*preconfig)(struct protocol *, struct config *); /* Just before configuring */
void (*postconfig)(struct proto_config *); /* After configuring each instance */
void protos_build(void);
void proto_build(struct protocol *);
void protos_preconfig(struct config *);
-void protos_postconfig(struct config *);
void protos_commit(struct config *new, struct config *old, int force_restart, int type);
void protos_dump_all(void);
char *name;
char *dsc;
int class; /* SYM_PROTO or SYM_TEMPLATE */
+ u8 net_type; /* Protocol network type (NET_*), 0 for undefined */
+ u8 disabled; /* Protocol enabled/disabled by default */
u32 debug, mrtdump; /* Debugging bitfields, both use D_* constants */
- unsigned preference, disabled; /* Generic parameters */
- int in_keep_filtered; /* Routes rejected in import filter are kept */
u32 router_id; /* Protocol specific router ID */
- struct rtable_config *table; /* Table we're attached to */
- struct filter *in_filter, *out_filter; /* Attached filters */
- struct proto_limit *rx_limit; /* Limit for receiving routes from protocol
- (relevant when in_keep_filtered is active) */
- struct proto_limit *in_limit; /* Limit for importing routes from protocol */
- struct proto_limit *out_limit; /* Limit for exporting routes to protocol */
+
+ list channels; /* List of channel configs (struct channel_config) */
/* Check proto_reconfigure() and proto_copy_config() after changing struct proto_config */
/* Import - from protocol to core */
u32 imp_routes; /* Number of routes successfully imported to the (adjacent) routing table */
u32 filt_routes; /* Number of routes rejected in import filter but kept in the routing table */
- u32 pref_routes; /* Number of routes that are preferred, sum over all routing tables */
u32 imp_updates_received; /* Number of route updates received */
u32 imp_updates_invalid; /* Number of route updates rejected as invalid */
u32 imp_updates_filtered; /* Number of route updates rejected by filters */
};
struct proto {
- node n; /* Node in *_proto_list */
- node glob_node; /* Node in global proto_list */
+ node n; /* Node in global proto_list */
struct protocol *proto; /* Protocol */
struct proto_config *cf; /* Configuration data */
struct proto_config *cf_new; /* Configuration we want to switch to after shutdown (NULL=delete) */
pool *pool; /* Pool containing local objects */
- struct event *attn; /* "Pay attention" event */
+ event *event; /* Protocol event */
+
+ list channels; /* List of channels to rtables (struct channel) */
+ struct channel *main_channel; /* Primary channel */
+ struct rte_src *main_source; /* Primary route source */
char *name; /* Name of this instance (== cf->name) */
u32 debug; /* Debugging flags */
u32 mrtdump; /* MRTDump flags */
- unsigned preference; /* Default route preference */
- byte accept_ra_types; /* Which types of route announcements are accepted (RA_OPTIMAL or RA_ANY) */
+ uint active_channels; /* Number of active channels */
+ byte net_type; /* Protocol network type (NET_*), 0 for undefined */
byte disabled; /* Manually disabled */
byte proto_state; /* Protocol state machine (PS_*, see below) */
- byte core_state; /* Core state machine (FS_*, see below) */
- byte export_state; /* Route export state (ES_*, see below) */
+ byte active; /* From PS_START to cleanup after PS_STOP */
+ byte do_start; /* Start actions are scheduled */
+ byte do_stop; /* Stop actions are scheduled */
byte reconfiguring; /* We're shutting down due to reconfiguration */
- byte refeeding; /* We are refeeding (valid only if export_state == ES_FEEDING) */
- byte flushing; /* Protocol is flushed in current flush loop round */
byte gr_recovery; /* Protocol should participate in graceful restart recovery */
- byte gr_lock; /* Graceful restart mechanism should wait for this proto */
- byte gr_wait; /* Route export to protocol is postponed until graceful restart */
byte down_sched; /* Shutdown is scheduled for later (PDS_*) */
byte down_code; /* Reason for shutdown (PDC_* codes) */
- byte merge_limit; /* Maximal number of nexthops for RA_MERGED */
u32 hash_key; /* Random key used for hashing of neighbors */
bird_clock_t last_state_change; /* Time of last state transition */
char *last_state_name_announced; /* Last state name we've announced to the user */
- struct proto_stats stats; /* Current protocol statistics */
/*
* General protocol hooks:
* It can construct a new rte, add private attributes and
* decide whether the route shall be imported: 1=yes, -1=no,
* 0=process it through the import filter set by the user.
- * reload_routes Request protocol to reload all its routes to the core
+ * reload_routes Request channel to reload all its routes to the core
* (using rte_update()). Returns: 0=reload cannot be done,
* 1= reload is scheduled and will happen (asynchronously).
- * feed_begin Notify protocol about beginning of route feeding.
- * feed_end Notify protocol about finish of route feeding.
+ * feed_begin Notify channel about beginning of route feeding.
+ * feed_end Notify channel about finish of route feeding.
*/
void (*if_notify)(struct proto *, unsigned flags, struct iface *i);
struct ea_list *(*make_tmp_attrs)(struct rte *rt, struct linpool *pool);
void (*store_tmp_attrs)(struct rte *rt, struct ea_list *attrs);
int (*import_control)(struct proto *, struct rte **rt, struct ea_list **attrs, struct linpool *pool);
- int (*reload_routes)(struct proto *);
- void (*feed_begin)(struct proto *, int initial);
- void (*feed_end)(struct proto *);
+ void (*reload_routes)(struct channel *);
+ void (*feed_begin)(struct channel *, int initial);
+ void (*feed_end)(struct channel *);
/*
* Routing entry hooks (called only for routes belonging to this protocol):
void (*rte_insert)(struct network *, struct rte *);
void (*rte_remove)(struct network *, struct rte *);
- struct rtable *table; /* Our primary routing table */
- struct rte_src *main_source; /* Primary route source */
- struct announce_hook *main_ahook; /* Primary announcement hook */
- struct announce_hook *ahooks; /* Announcement hooks for this protocol */
-
- struct fib_iterator *feed_iterator; /* Routing table iterator used during protocol feeding */
- struct announce_hook *feed_ahook; /* Announce hook we currently feed */
-
/* Hic sunt protocol-specific data */
};
#define PDC_OUT_LIMIT_HIT 0x23 /* Route export limit reached */
-void *proto_new(struct proto_config *, unsigned size);
+void *proto_new(struct proto_config *);
void *proto_config_new(struct protocol *, int class);
void proto_copy_config(struct proto_config *dest, struct proto_config *src);
-void proto_request_feeding(struct proto *p);
-
-static inline void
-proto_copy_rest(struct proto_config *dest, struct proto_config *src, unsigned size)
-{ memcpy(dest + 1, src + 1, size - sizeof(struct proto_config)); }
void graceful_restart_recovery(void);
void graceful_restart_init(void);
void graceful_restart_show_status(void);
-void proto_graceful_restart_lock(struct proto *p);
-void proto_graceful_restart_unlock(struct proto *p);
+void channel_graceful_restart_lock(struct channel *c);
+void channel_graceful_restart_unlock(struct channel *c);
#define DEFAULT_GR_WAIT 240
-void proto_show_limit(struct proto_limit *l, const char *dsc);
-void proto_show_basic_info(struct proto *p);
+void channel_show_limit(struct channel_limit *l, const char *dsc);
+void channel_show_info(struct channel *c);
void proto_cmd_show(struct proto *, uint, int);
void proto_cmd_disable(struct proto *, uint, int);
return pc->router_id ? pc->router_id : pc->global->router_id;
}
-extern list active_proto_list;
+/* Moved from route.h to avoid dependency conflicts */
+static inline void rte_update(struct proto *p, net *net, rte *new) { rte_update2(p->main_channel, net, new, p->main_source); }
+
+extern list proto_list;
/*
* Each protocol instance runs two different state machines:
* as a result of received ROUTE-REFRESH request).
*/
-#define FS_HUNGRY 0
-#define FS_FEEDING 1 /* obsolete */
-#define FS_HAPPY 2
-#define FS_FLUSHING 3
-
-
-#define ES_DOWN 0
-#define ES_FEEDING 1
-#define ES_READY 2
-
/*
#define PLD_OUT 2 /* Export limit */
#define PLD_MAX 3
+#define PLA_NONE 0 /* No limit */
#define PLA_WARN 1 /* Issue log warning */
#define PLA_BLOCK 2 /* Block new routes */
#define PLA_RESTART 4 /* Force protocol restart */
#define PLS_ACTIVE 1 /* Limit was hit */
#define PLS_BLOCKED 2 /* Limit is active and blocking new routes */
-struct proto_limit {
+struct channel_limit {
u32 limit; /* Maximum number of prefixes */
- byte action; /* Action to take (PLA_*) */
- byte state; /* State of limit (PLS_*) */
+ u8 action; /* Action to take (PLA_*) */
+ u8 state; /* State of limit (PLS_*) */
};
-void proto_notify_limit(struct announce_hook *ah, struct proto_limit *l, int dir, u32 rt_count);
-void proto_verify_limits(struct announce_hook *ah);
-
-static inline void
-proto_reset_limit(struct proto_limit *l)
-{
- if (l)
- l->state = PLS_INITIAL;
-}
+void channel_notify_limit(struct channel *c, struct channel_limit *l, int dir, u32 rt_count);
/*
- * Route Announcement Hook
+ * Channels
*/
-struct announce_hook {
+struct channel_class {
+ uint channel_size; /* Size of channel data structure */
+ uint config_size; /* Size of channel config data structure */
+
+ struct channel * (*init)(struct channel *, struct channel_config *); /* Create new instance */
+ int (*reconfigure)(struct channel *, struct channel_config *); /* Try to reconfigure instance, returns success */
+ int (*start)(struct channel *); /* Start the instance */
+ int (*shutdown)(struct channel *); /* Stop the instance */
+
+ void (*copy_config)(struct channel_config *, struct channel_config *); /* Copy config from given channel instance */
+#if 0
+ void (*preconfig)(struct protocol *, struct config *); /* Just before configuring */
+ void (*postconfig)(struct proto_config *); /* After configuring each instance */
+
+
+ void (*dump)(struct proto *); /* Debugging dump */
+ void (*dump_attrs)(struct rte *); /* Dump protocol-dependent attributes */
+ void (*cleanup)(struct proto *); /* Called after shutdown when protocol became hungry/down */
+ void (*get_status)(struct proto *, byte *buf); /* Get instance status (for `show protocols' command) */
+ void (*get_route_info)(struct rte *, byte *buf, struct ea_list *attrs); /* Get route information (for `show route' command) */
+ int (*get_attr)(struct eattr *, byte *buf, int buflen); /* ASCIIfy dynamic attribute (returns GA_*) */
+ void (*show_proto_info)(struct proto *); /* Show protocol info (for `show protocols all' command) */
+
+#endif
+};
+
+struct channel_config {
node n;
- struct rtable *table;
+ const char *name;
+ const struct channel_class *channel;
+
+ struct rtable_config *table; /* Table we're attached to */
+ struct filter *in_filter, *out_filter; /* Attached filters */
+ struct channel_limit rx_limit; /* Limit for receiving routes from protocol
+ (relevant when in_keep_filtered is active) */
+ struct channel_limit in_limit; /* Limit for importing routes from protocol */
+ struct channel_limit out_limit; /* Limit for exporting routes to protocol */
+
+ u8 net_type; /* Routing table network type (NET_*), 0 for undefined */
+ u8 ra_mode; /* Mode of received route advertisements (RA_*) */
+ u16 preference; /* Default route preference */
+ u8 merge_limit; /* Maximal number of nexthops for RA_MERGED */
+ u8 in_keep_filtered; /* Routes rejected in import filter are kept */
+};
+
+struct channel {
+ node n; /* Node in proto->channels */
+ node table_node; /* Node in table->channels */
+
+ const char *name; /* Channel name (may be NULL) */
+ const struct channel_class *channel;
struct proto *proto;
+
+ struct rtable *table;
struct filter *in_filter; /* Input filter */
struct filter *out_filter; /* Output filter */
- struct proto_limit *rx_limit; /* Receive limit (for in_keep_filtered) */
- struct proto_limit *in_limit; /* Input limit */
- struct proto_limit *out_limit; /* Output limit */
- struct proto_stats *stats; /* Per-table protocol statistics */
- struct announce_hook *next; /* Next hook for the same protocol */
- int in_keep_filtered; /* Routes rejected in import filter are kept */
+ struct channel_limit rx_limit; /* Receive limit (for in_keep_filtered) */
+ struct channel_limit in_limit; /* Input limit */
+ struct channel_limit out_limit; /* Output limit */
+
+ struct event *feed_event; /* Event responsible for feeding */
+ struct fib_iterator feed_fit; /* Routing table iterator used during feeding */
+ struct proto_stats stats; /* Per-channel protocol statistics */
+
+ u8 net_type; /* Routing table network type (NET_*), 0 for undefined */
+ u8 ra_mode; /* Mode of received route advertisements (RA_*) */
+ u16 preference; /* Default route preference */
+ u8 merge_limit; /* Maximal number of nexthops for RA_MERGED */
+ u8 in_keep_filtered; /* Routes rejected in import filter are kept */
+ u8 disabled;
+
+ u8 channel_state;
+ u8 export_state; /* Route export state (ES_*, see below) */
+ u8 feed_active;
+ u8 flush_active;
+ u8 refeeding; /* We are refeeding (valid only if export_state == ES_FEEDING) */
+ u8 reloadable; /* Hook reload_routes() is allowed on the channel */
+ u8 gr_lock; /* Graceful restart mechanism should wait for this channel */
+ u8 gr_wait; /* Route export to channel is postponed until graceful restart */
+
+ bird_clock_t last_state_change; /* Time of last state transition */
};
-struct announce_hook *proto_add_announce_hook(struct proto *p, struct rtable *t, struct proto_stats *stats);
-struct announce_hook *proto_find_announce_hook(struct proto *p, struct rtable *t);
+
+/*
+ * Channel states
+ *
+ * CS_DOWN - The initial and the final state of a channel. There is no route
+ * exchange between the protocol and the table. Channel is not counted as
+ * active. Channel keeps a ptr to the table, but do not lock the table and is
+ * not linked in the table. Generally, new closed channels are created in
+ * protocols' init() hooks. The protocol is expected to explicitly activate its
+ * channels (by calling channel_init() or channel_open()).
+ *
+ * CS_START - The channel as a connection between the protocol and the table is
+ * initialized (counted as active by the protocol, linked in the table and keeps
+ * the table locked), but there is no current route exchange. There still may be
+ * routes associated with the channel in the routing table if the channel falls
+ * to CS_START from CS_UP. Generally, channels are initialized in protocols'
+ * start() hooks when going to PS_START.
+ *
+ * CS_UP - The channel is initialized and the route exchange is allowed. Note
+ * that even in CS_UP state, route export may still be down (ES_DOWN) by the
+ * core decision (e.g. waiting for table convergence after graceful restart).
+ * I.e., the protocol decides to open the channel but the core decides to start
+ * route export. Route import (caused by rte_update() from the protocol) is not
+ * restricted by that and is on volition of the protocol. Generally, channels
+ * are opened in protocols' start() hooks when going to PS_UP.
+ *
+ * CS_FLUSHING - The transitional state between initialized channel and closed
+ * channel. The channel is still initialized, but no route exchange is allowed.
+ * Instead, the associated table is running flush loop to remove routes imported
+ * through the channel. After that, the channel changes state to CS_DOWN and
+ * is detached from the table (the table is unlocked and the channel is unlinked
+ * from it). Unlike other states, the CS_FLUSHING state is not explicitly
+ * entered or left by the protocol. A protocol may request to close a channel
+ * (by calling channel_close()), which causes the channel to change state to
+ * CS_FLUSHING and later to CS_DOWN. Also note that channels are closed
+ * automatically by the core when the protocol is going down.
+ *
+ * Allowed transitions:
+ *
+ * CS_DOWN -> CS_START / CS_UP
+ * CS_START -> CS_UP / CS_FLUSHING
+ * CS_UP -> CS_START / CS_FLUSHING
+ * CS_FLUSHING -> CS_DOWN (automatic)
+ */
+
+#define CS_DOWN 0
+#define CS_START 1
+#define CS_UP 2
+#define CS_FLUSHING 3
+
+#define ES_DOWN 0
+#define ES_FEEDING 1
+#define ES_READY 2
+
+
+struct channel_config *proto_cf_find_channel(struct proto_config *p, uint net_type);
+static inline struct channel_config *proto_cf_main_channel(struct proto_config *pc)
+{ struct channel_config *cc = HEAD(pc->channels); return NODE_VALID(cc) ? cc : NULL; }
+
+struct channel *proto_find_channel_by_table(struct proto *p, struct rtable *t);
+struct channel *proto_add_channel(struct proto *p, struct channel_config *cf);
+int proto_configure_channel(struct proto *p, struct channel **c, struct channel_config *cf);
+
+void channel_set_state(struct channel *c, uint state);
+
+/*
+static inline void channel_init(struct channel *c) { channel_set_state(c, CS_START); }
+static inline void channel_open(struct channel *c) { channel_set_state(c, CS_UP); }
+static inline void channel_close(struct channel *c) { channel_set_state(c, CS_FLUSHING); }
+*/
+
+void channel_request_feeding(struct channel *c);
+void *channel_config_new(const struct channel_class *cc, uint net_type, struct proto_config *proto);
+int channel_reconfigure(struct channel *c, struct channel_config *cf);
+
#endif
#include "lib/lists.h"
#include "lib/resource.h"
#include "lib/timer.h"
-#include "nest/protocol.h"
+//#include "nest/protocol.h"
+struct ea_list;
struct protocol;
struct proto;
+struct rte_src;
struct symbol;
struct filter;
struct cli;
uint hash_order; /* Binary logarithm of hash_size */
uint hash_shift; /* 32 - hash_order */
uint addr_type; /* Type of address data stored in fib (NET_*) */
- uint node_size; /* XXXX */
- uint node_offset; /* XXXX */
+ uint node_size; /* FIB node size, 0 for nonuniform */
+ uint node_offset; /* Offset of fib_node struct inside of user data */
uint entries; /* Number of entries */
uint entries_min, entries_max; /* Entry count limits (else start rehashing) */
fib_init_fn init; /* Constructor */
node n; /* Node in list of all tables */
struct fib fib;
char *name; /* Name of this table */
- list hooks; /* List of announcement hooks */
+ list channels; /* List of attached channels (struct channel) */
uint addr_type; /* Type of address data stored in table (NET_*) */
int pipe_busy; /* Pipe loop detection */
int use_count; /* Number of protocols using this table */
struct event *rt_event; /* Routing table event */
int gc_counter; /* Number of operations since last GC */
bird_clock_t gc_time; /* Time of last GC */
- byte gc_scheduled; /* GC is scheduled */
byte prune_state; /* Table prune state, 1 -> scheduled, 2-> running */
byte hcu_scheduled; /* Hostcache update is scheduled */
byte nhu_state; /* Next Hop Update state */
struct fib_iterator nhu_fit; /* Next Hop Update FIB iterator */
} rtable;
-#define RPS_NONE 0
-#define RPS_SCHEDULED 1
-#define RPS_RUNNING 2
-
typedef struct network {
struct rte *routes; /* Available routes for this network */
struct fib_node n; /* FIB flags reserved for kernel syncer */
typedef struct rte {
struct rte *next;
net *net; /* Network this RTE belongs to */
- struct announce_hook *sender; /* Announce hook used to send the route to the routing table */
+ struct channel *sender; /* Channel used to send the route to the routing table */
struct rta *attrs; /* Attributes of this route */
byte flags; /* Flags (REF_...) */
byte pflags; /* Protocol-specific flags */
rte *rte_find(net *net, struct rte_src *src);
rte *rte_get_temp(struct rta *);
-void rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src);
-static inline void rte_update(struct proto *p, net *net, rte *new) { rte_update2(p->main_ahook, net, new, p->main_source); }
+void rte_update2(struct channel *c, net *net, rte *new, struct rte_src *src);
+/* rte_update() moved to protocol.h to avoid dependency conflicts */
void rte_discard(rtable *tab, rte *old);
int rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter *filter);
-rte *rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, struct ea_list **tmpa, int silent);
-void rt_refresh_begin(rtable *t, struct announce_hook *ah);
-void rt_refresh_end(rtable *t, struct announce_hook *ah);
+rte *rt_export_merged(struct channel *c, net *net, rte **rt_free, struct ea_list **tmpa, int silent);
+void rt_refresh_begin(rtable *t, struct channel *c);
+void rt_refresh_end(rtable *t, struct channel *c);
+void rt_schedule_prune(rtable *t);
void rte_dump(rte *);
void rte_free(rte *);
rte *rte_do_cow(rte *);
rte *rte_cow_rta(rte *r, linpool *lp);
void rt_dump(rtable *);
void rt_dump_all(void);
-int rt_feed_baby(struct proto *p);
-void rt_feed_baby_abort(struct proto *p);
-int rt_prune_loop(void);
+int rt_feed_channel(struct channel *c);
+void rt_feed_channel_abort(struct channel *c);
struct rtable_config *rt_new_table(struct symbol *s, uint addr_type);
-static inline void
-rt_mark_for_prune(rtable *tab)
-{
- if (tab->prune_state == RPS_RUNNING)
- fit_get(&tab->fib, &tab->prune_fit);
-
- tab->prune_state = RPS_SCHEDULED;
-}
struct rt_show_data {
net_addr *addr;
struct fib_iterator fit;
struct proto *show_protocol;
struct proto *export_protocol;
+ struct channel *export_channel;
int export_mode, primary_only, filtered;
struct config *running_on_config;
int net_counter, rt_counter, show_counter;
#define DEF_PREF_OSPF 150 /* OSPF intra-area, inter-area and type 1 external routes */
#define DEF_PREF_RIP 120 /* RIP */
#define DEF_PREF_BGP 100 /* BGP */
-#define DEF_PREF_PIPE 70 /* Routes piped from other tables */
#define DEF_PREF_INHERITED 10 /* Routes inherited from other routing daemons */
/*
#include "lib/resource.h"
#include "lib/string.h"
+
static void
-dev_ifa_notify(struct proto *p, unsigned c, struct ifa *ad)
+dev_ifa_notify(struct proto *P, uint flags, struct ifa *ad)
{
- struct rt_dev_config *P = (void *) p->cf;
+ struct rt_dev_proto *p = (void *) P;
+ struct rt_dev_config *cf = (void *) P->cf;
+ struct channel *c;
- if (!EMPTY_LIST(P->iface_list) &&
- !iface_patt_find(&P->iface_list, ad->iface, ad->iface->addr))
+ if (!EMPTY_LIST(cf->iface_list) &&
+ !iface_patt_find(&cf->iface_list, ad->iface, ad->iface->addr))
/* Empty list is automagically treated as "*" */
return;
if (ad->scope <= SCOPE_LINK)
return;
- if (c & IF_CHANGE_DOWN)
+ if (ad->prefix.type == NET_IP4)
+ c = p->ip4_channel;
+ else if (ad->prefix.type == NET_IP6)
+ c = p->ip6_channel;
+ else
+ return;
+
+ if (!c)
+ return;
+
+ if (flags & IF_CHANGE_DOWN)
{
net *n;
DBG("dev_if_notify: %s:%I going down\n", ad->iface->name, ad->ip);
- n = net_find(p->table, &ad->prefix);
+ n = net_find(c->table, &ad->prefix);
if (!n)
{
DBG("dev_if_notify: device shutdown: prefix not found\n");
}
/* Use iface ID as local source ID */
- struct rte_src *src = rt_get_source(p, ad->iface->index);
- rte_update2(p->main_ahook, n, NULL, src);
+ struct rte_src *src = rt_get_source(P, ad->iface->index);
+ rte_update2(c, n, NULL, src);
}
- else if (c & IF_CHANGE_UP)
+ else if (flags & IF_CHANGE_UP)
{
rta *a;
net *n;
DBG("dev_if_notify: %s:%I going up\n", ad->iface->name, ad->ip);
/* Use iface ID as local source ID */
- struct rte_src *src = rt_get_source(p, ad->iface->index);
+ struct rte_src *src = rt_get_source(P, ad->iface->index);
rta a0 = {
.src = src,
};
a = rta_lookup(&a0);
- n = net_get(p->table, &ad->prefix);
+ n = net_get(c->table, &ad->prefix);
e = rte_get_temp(a);
e->net = n;
e->pflags = 0;
- rte_update2(p->main_ahook, n, e, src);
+ rte_update2(c, n, e, src);
}
}
static struct proto *
-dev_init(struct proto_config *c)
+dev_init(struct proto_config *CF)
{
- struct proto *p = proto_new(c, sizeof(struct proto));
+ struct proto *P = proto_new(CF);
+ struct rt_dev_proto *p = (void *) P;
+ // struct rt_dev_config *cf = (void *) CF;
- p->ifa_notify = dev_ifa_notify;
- return p;
+ proto_configure_channel(P, &p->ip4_channel, proto_cf_find_channel(CF, NET_IP4));
+ proto_configure_channel(P, &p->ip6_channel, proto_cf_find_channel(CF, NET_IP6));
+
+ P->ifa_notify = dev_ifa_notify;
+
+ return P;
}
static int
-dev_reconfigure(struct proto *p, struct proto_config *new)
+dev_reconfigure(struct proto *P, struct proto_config *CF)
{
- struct rt_dev_config *o = (struct rt_dev_config *) p->cf;
- struct rt_dev_config *n = (struct rt_dev_config *) new;
+ struct rt_dev_proto *p = (void *) P;
+ struct rt_dev_config *o = (void *) P->cf;
+ struct rt_dev_config *n = (void *) CF;
+
+ if (!iface_patts_equal(&o->iface_list, &n->iface_list, NULL))
+ return 0;
+
+ return
+ proto_configure_channel(P, &p->ip4_channel, proto_cf_find_channel(CF, NET_IP4)) &&
+ proto_configure_channel(P, &p->ip6_channel, proto_cf_find_channel(CF, NET_IP6));
- return iface_patts_equal(&o->iface_list, &n->iface_list, NULL);
+ return 1;
}
static void
dev_copy_config(struct proto_config *dest, struct proto_config *src)
{
- struct rt_dev_config *d = (struct rt_dev_config *) dest;
- struct rt_dev_config *s = (struct rt_dev_config *) src;
+ struct rt_dev_config *d = (void *) dest;
+ struct rt_dev_config *s = (void *) src;
/*
* We copy iface_list as ifaces can be shared by more direct protocols.
struct protocol proto_device = {
.name = "Direct",
.template = "direct%d",
- .preference = DEF_PREF_DIRECT,
+ .preference = DEF_PREF_DIRECT,
+ .channel_mask = NB_IP,
+ .proto_size = sizeof(struct rt_dev_proto),
.config_size = sizeof(struct rt_dev_config),
.init = dev_init,
.reconfigure = dev_reconfigure,
list iface_list; /* list of struct iface_patt */
};
+struct rt_dev_proto {
+ struct proto p;
+ struct channel *ip4_channel;
+ struct channel *ip6_channel;
+};
+
#endif
static void rt_notify_hostcache(rtable *tab, net *net);
static void rt_update_hostcache(rtable *tab);
static void rt_next_hop_update(rtable *tab);
-static inline int rt_prune_table(rtable *tab);
-static inline void rt_schedule_gc(rtable *tab);
-static inline void rt_schedule_prune(rtable *tab);
+static inline void rt_prune_table(rtable *tab);
static inline struct ea_list *
e->attrs = a;
e->flags = 0;
- e->pref = a->src->proto->preference;
+ e->pref = 0;
return e;
}
}
static rte *
-export_filter(struct announce_hook *ah, rte *rt0, rte **rt_free, ea_list **tmpa, int silent)
+export_filter(struct channel *c, rte *rt0, rte **rt_free, ea_list **tmpa, int silent)
{
- struct proto *p = ah->proto;
- struct filter *filter = ah->out_filter;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
+ struct filter *filter = c->out_filter;
+ struct proto_stats *stats = &c->stats;
ea_list *tmpb = NULL;
rte *rt;
int v;
}
static void
-do_rt_notify(struct announce_hook *ah, net *net, rte *new, rte *old, ea_list *tmpa, int refeed)
+do_rt_notify(struct channel *c, net *net, rte *new, rte *old, ea_list *tmpa, int refeed)
{
- struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
+ struct proto_stats *stats = &c->stats;
/*
* also non-new updates (contrary to import blocking).
*/
- struct proto_limit *l = ah->out_limit;
- if (l && new)
+ struct channel_limit *l = &c->out_limit;
+ if (l->action && new)
{
if ((!old || refeed) && (stats->exp_routes >= l->limit))
- proto_notify_limit(ah, l, PLD_OUT, stats->exp_routes);
+ channel_notify_limit(c, l, PLD_OUT, stats->exp_routes);
if (l->state == PLS_BLOCKED)
{
rte_trace_out(D_ROUTES, p, old, "removed");
}
if (!new)
- p->rt_notify(p, ah->table, net, NULL, old, NULL);
+ p->rt_notify(p, c->table, net, NULL, old, NULL);
else if (tmpa)
{
ea_list *t = tmpa;
while (t->next)
t = t->next;
t->next = new->attrs->eattrs;
- p->rt_notify(p, ah->table, net, new, old, tmpa);
+ p->rt_notify(p, c->table, net, new, old, tmpa);
t->next = NULL;
}
else
- p->rt_notify(p, ah->table, net, new, old, new->attrs->eattrs);
+ p->rt_notify(p, c->table, net, new, old, new->attrs->eattrs);
}
static void
-rt_notify_basic(struct announce_hook *ah, net *net, rte *new0, rte *old0, int refeed)
+rt_notify_basic(struct channel *c, net *net, rte *new0, rte *old0, int refeed)
{
- struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
rte *new = new0;
rte *old = old0;
ea_list *tmpa = NULL;
if (new)
- stats->exp_updates_received++;
+ c->stats.exp_updates_received++;
else
- stats->exp_withdraws_received++;
+ c->stats.exp_withdraws_received++;
/*
* This is a tricky part - we don't know whether route 'old' was
*/
if (new)
- new = export_filter(ah, new, &new_free, &tmpa, 0);
+ new = export_filter(c, new, &new_free, &tmpa, 0);
if (old && !refeed)
- old = export_filter(ah, old, &old_free, NULL, 1);
+ old = export_filter(c, old, &old_free, NULL, 1);
if (!new && !old)
{
#ifdef CONFIG_PIPE
if ((p->proto == &proto_pipe) && !new0 && (p != old0->sender->proto))
- p->rt_notify(p, ah->table, net, NULL, old0, NULL);
+ p->rt_notify(p, c->table, net, NULL, old0, NULL);
#endif
return;
}
- do_rt_notify(ah, net, new, old, tmpa, refeed);
+ do_rt_notify(c, net, new, old, tmpa, refeed);
/* Discard temporary rte's */
if (new_free)
}
static void
-rt_notify_accepted(struct announce_hook *ah, net *net, rte *new_changed, rte *old_changed, rte *before_old, int feed)
+rt_notify_accepted(struct channel *c, net *net, rte *new_changed, rte *old_changed, rte *before_old, int feed)
{
- // struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
+ // struct proto *p = c->proto;
rte *r;
rte *new_best = NULL;
was not valid, caller must use NULL for both old_changed and before_old. */
if (new_changed)
- stats->exp_updates_received++;
+ c->stats.exp_updates_received++;
else
- stats->exp_withdraws_received++;
+ c->stats.exp_withdraws_received++;
/* First, find the new_best route - first accepted by filters */
for (r=net->routes; rte_is_valid(r); r=r->next)
{
- if (new_best = export_filter(ah, r, &new_free, &tmpa, 0))
+ if (new_best = export_filter(c, r, &new_free, &tmpa, 0))
break;
/* Note if we walked around the position of old_changed route */
/* First case */
if (old_meet)
- if (old_best = export_filter(ah, old_changed, &old_free, NULL, 1))
+ if (old_best = export_filter(c, old_changed, &old_free, NULL, 1))
goto found;
/* Second case */
/* Fourth case */
for (r=r->next; rte_is_valid(r); r=r->next)
{
- if (old_best = export_filter(ah, r, &old_free, NULL, 1))
+ if (old_best = export_filter(c, r, &old_free, NULL, 1))
goto found;
if (r == before_old)
- if (old_best = export_filter(ah, old_changed, &old_free, NULL, 1))
+ if (old_best = export_filter(c, old_changed, &old_free, NULL, 1))
goto found;
}
/* Implicitly, old_best is NULL and new_best is non-NULL */
found:
- do_rt_notify(ah, net, new_best, old_best, tmpa, (feed == 2));
+ do_rt_notify(c, net, new_best, old_best, tmpa, (feed == 2));
/* Discard temporary rte's */
if (new_free)
}
rte *
-rt_export_merged(struct announce_hook *ah, net *net, rte **rt_free, ea_list **tmpa, int silent)
+rt_export_merged(struct channel *c, net *net, rte **rt_free, ea_list **tmpa, int silent)
{
- // struct proto *p = ah->proto;
+ // struct proto *p = c->proto;
struct mpnh *nhs = NULL;
rte *best0, *best, *rt0, *rt, *tmp;
if (!rte_is_valid(best0))
return NULL;
- best = export_filter(ah, best0, rt_free, tmpa, silent);
+ best = export_filter(c, best0, rt_free, tmpa, silent);
if (!best || !rte_is_reachable(best))
return best;
if (!rte_mergable(best0, rt0))
continue;
- rt = export_filter(ah, rt0, &tmp, NULL, 1);
+ rt = export_filter(c, rt0, &tmp, NULL, 1);
if (!rt)
continue;
if (rte_is_reachable(rt))
- nhs = mpnh_merge_rta(nhs, rt->attrs, ah->proto->merge_limit);
+ nhs = mpnh_merge_rta(nhs, rt->attrs, c->merge_limit);
if (tmp)
rte_free(tmp);
if (nhs)
{
- nhs = mpnh_merge_rta(nhs, best->attrs, ah->proto->merge_limit);
+ nhs = mpnh_merge_rta(nhs, best->attrs, c->merge_limit);
if (nhs->next)
{
static void
-rt_notify_merged(struct announce_hook *ah, net *net, rte *new_changed, rte *old_changed,
+rt_notify_merged(struct channel *c, net *net, rte *new_changed, rte *old_changed,
rte *new_best, rte*old_best, int refeed)
{
- // struct proto *p = ah->proto;
+ // struct proto *p = c->proto;
rte *new_best_free = NULL;
rte *old_best_free = NULL;
if ((new_best == old_best) && !refeed)
{
new_changed = rte_mergable(new_best, new_changed) ?
- export_filter(ah, new_changed, &new_changed_free, NULL, 1) : NULL;
+ export_filter(c, new_changed, &new_changed_free, NULL, 1) : NULL;
old_changed = rte_mergable(old_best, old_changed) ?
- export_filter(ah, old_changed, &old_changed_free, NULL, 1) : NULL;
+ export_filter(c, old_changed, &old_changed_free, NULL, 1) : NULL;
if (!new_changed && !old_changed)
return;
}
if (new_best)
- ah->stats->exp_updates_received++;
+ c->stats.exp_updates_received++;
else
- ah->stats->exp_withdraws_received++;
+ c->stats.exp_withdraws_received++;
/* Prepare new merged route */
if (new_best)
- new_best = rt_export_merged(ah, net, &new_best_free, &tmpa, 0);
+ new_best = rt_export_merged(c, net, &new_best_free, &tmpa, 0);
/* Prepare old merged route (without proper merged next hops) */
/* There are some issues with running filter on old route - see rt_notify_basic() */
if (old_best && !refeed)
- old_best = export_filter(ah, old_best, &old_best_free, NULL, 1);
+ old_best = export_filter(c, old_best, &old_best_free, NULL, 1);
if (new_best || old_best)
- do_rt_notify(ah, net, new_best, old_best, tmpa, refeed);
+ do_rt_notify(c, net, new_best, old_best, tmpa, refeed);
/* Discard temporary rte's */
if (new_best_free)
if (!old && !new)
return;
- if (type == RA_OPTIMAL)
- {
- if (new)
- new->attrs->src->proto->stats.pref_routes++;
- if (old)
- old->attrs->src->proto->stats.pref_routes--;
+ if ((type == RA_OPTIMAL) && tab->hostcache)
+ rt_notify_hostcache(tab, net);
- if (tab->hostcache)
- rt_notify_hostcache(tab, net);
- }
-
- struct announce_hook *a;
- WALK_LIST(a, tab->hooks)
+ struct channel *c; node *n;
+ WALK_LIST2(c, n, tab->channels, table_node)
{
- ASSERT(a->proto->export_state != ES_DOWN);
- if (a->proto->accept_ra_types == type)
+ if (c->export_state == ES_DOWN)
+ continue;
+
+ if (c->ra_mode == type)
if (type == RA_ACCEPTED)
- rt_notify_accepted(a, net, new, old, before_old, 0);
+ rt_notify_accepted(c, net, new, old, before_old, 0);
else if (type == RA_MERGED)
- rt_notify_merged(a, net, new, old, new_best, old_best, 0);
+ rt_notify_merged(c, net, new, old, new_best, old_best, 0);
else
- rt_notify_basic(a, net, new, old, 0);
+ rt_notify_basic(c, net, new, old, 0);
}
}
static inline int rte_is_ok(rte *e) { return e && !rte_is_filtered(e); }
static void
-rte_recalculate(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
+rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src)
{
- struct proto *p = ah->proto;
- struct rtable *table = ah->table;
- struct proto_stats *stats = ah->stats;
+ struct proto *p = c->proto;
+ struct rtable *table = c->table;
+ struct proto_stats *stats = &c->stats;
static struct tbf rl_pipe = TBF_DEFAULT_LOG_LIMITS;
rte *before_old = NULL;
rte *old_best = net->routes;
int new_ok = rte_is_ok(new);
int old_ok = rte_is_ok(old);
- struct proto_limit *l = ah->rx_limit;
- if (l && !old && new)
+ struct channel_limit *l = &c->rx_limit;
+ if (l->action && !old && new)
{
u32 all_routes = stats->imp_routes + stats->filt_routes;
if (all_routes >= l->limit)
- proto_notify_limit(ah, l, PLD_RX, all_routes);
+ channel_notify_limit(c, l, PLD_RX, all_routes);
if (l->state == PLS_BLOCKED)
{
}
}
- l = ah->in_limit;
- if (l && !old_ok && new_ok)
+ l = &c->in_limit;
+ if (l->action && !old_ok && new_ok)
{
if (stats->imp_routes >= l->limit)
- proto_notify_limit(ah, l, PLD_IN, stats->imp_routes);
+ channel_notify_limit(c, l, PLD_IN, stats->imp_routes);
if (l->state == PLS_BLOCKED)
{
stats->imp_updates_ignored++;
rte_trace_in(D_FILTERS, p, new, "ignored [limit]");
- if (ah->in_keep_filtered)
+ if (c->in_keep_filtered)
new->flags |= REF_FILTERED;
else
{ rte_free_quick(new); new = NULL; }
/* Note that old && !new could be possible when
- ah->in_keep_filtered changed in the recent past. */
+ c->in_keep_filtered changed in the recent past. */
if (!old && !new)
return;
if (!net->routes &&
(table->gc_counter++ >= table->config->gc_max_ops) &&
(table->gc_time + table->config->gc_min_time <= now))
- rt_schedule_gc(table);
+ rt_schedule_prune(table);
if (old_ok && p->rte_remove)
p->rte_remove(net, old);
/**
* rte_update - enter a new update to a routing table
* @table: table to be updated
- * @ah: pointer to table announce hook
+ * @c: channel doing the update
* @net: network node
* @p: protocol submitting the update
* @src: protocol originating the update
*/
void
-rte_update2(struct announce_hook *ah, net *net, rte *new, struct rte_src *src)
+rte_update2(struct channel *c, net *net, rte *new, struct rte_src *src)
{
- struct proto *p = ah->proto;
- struct proto_stats *stats = ah->stats;
- struct filter *filter = ah->in_filter;
+ struct proto *p = c->proto;
+ struct proto_stats *stats = &c->stats;
+ struct filter *filter = c->in_filter;
ea_list *tmpa = NULL;
rte *dummy = NULL;
+ ASSERT(c->channel_state == CS_UP);
+
rte_update_lock();
if (new)
{
- new->sender = ah;
+ new->sender = c;
+
+ if (!new->pref)
+ new->pref = c->preference;
stats->imp_updates_received++;
if (!rte_validate(new))
stats->imp_updates_filtered++;
rte_trace_in(D_FILTERS, p, new, "filtered out");
- if (! ah->in_keep_filtered)
+ if (! c->in_keep_filtered)
goto drop;
/* new is a private copy, i could modify it */
stats->imp_updates_filtered++;
rte_trace_in(D_FILTERS, p, new, "filtered out");
- if (! ah->in_keep_filtered)
+ if (! c->in_keep_filtered)
goto drop;
new->flags |= REF_FILTERED;
recalc:
rte_hide_dummy_routes(net, &dummy);
- rte_recalculate(ah, net, new, src);
+ rte_recalculate(c, net, new, src);
rte_unhide_dummy_routes(net, &dummy);
rte_update_unlock();
return;
/**
* rt_refresh_begin - start a refresh cycle
* @t: related routing table
- * @ah: related announce hook
+ * @c related channel
*
* This function starts a refresh cycle for given routing table and announce
* hook. The refresh cycle is a sequence where the protocol sends all its valid
* routes to the routing table (by rte_update()). After that, all protocol
- * routes (more precisely routes with @ah as @sender) not sent during the
+ * routes (more precisely routes with @c as @sender) not sent during the
* refresh cycle but still in the table from the past are pruned. This is
* implemented by marking all related routes as stale by REF_STALE flag in
* rt_refresh_begin(), then marking all related stale routes with REF_DISCARD
* flag in rt_refresh_end() and then removing such routes in the prune loop.
*/
void
-rt_refresh_begin(rtable *t, struct announce_hook *ah)
+rt_refresh_begin(rtable *t, struct channel *c)
{
FIB_WALK(&t->fib, net, n)
{
rte *e;
for (e = n->routes; e; e = e->next)
- if (e->sender == ah)
+ if (e->sender == c)
e->flags |= REF_STALE;
}
FIB_WALK_END;
/**
* rt_refresh_end - end a refresh cycle
* @t: related routing table
- * @ah: related announce hook
+ * @c: related channel
*
- * This function starts a refresh cycle for given routing table and announce
+ * This function ends a refresh cycle for given routing table and announce
* hook. See rt_refresh_begin() for description of refresh cycles.
*/
void
-rt_refresh_end(rtable *t, struct announce_hook *ah)
+rt_refresh_end(rtable *t, struct channel *c)
{
int prune = 0;
{
rte *e;
for (e = n->routes; e; e = e->next)
- if ((e->sender == ah) && (e->flags & REF_STALE))
+ if ((e->sender == c) && (e->flags & REF_STALE))
{
e->flags |= REF_DISCARD;
prune = 1;
rte_dump(e);
}
FIB_WALK_END;
-
- struct announce_hook *a;
- WALK_LIST(a, t->hooks)
- debug("\tAnnounces routes to protocol %s\n", a->proto->name);
debug("\n");
}
rt_dump(t);
}
-static inline void
-rt_schedule_prune(rtable *tab)
-{
- rt_mark_for_prune(tab);
- ev_schedule(tab->rt_event);
-}
-
-static inline void
-rt_schedule_gc(rtable *tab)
-{
- if (tab->gc_scheduled)
- return;
-
- tab->gc_scheduled = 1;
- ev_schedule(tab->rt_event);
-}
-
static inline void
rt_schedule_hcu(rtable *tab)
{
tab->nhu_state |= 1;
}
-
-static void
-rt_prune_nets(rtable *tab)
+void
+rt_schedule_prune(rtable *tab)
{
- struct fib_iterator fit;
- int ncnt = 0, ndel = 0;
-
-#ifdef DEBUGGING
- fib_check(&tab->fib);
-#endif
-
- FIB_ITERATE_INIT(&fit, &tab->fib);
-again:
- FIB_ITERATE_START(&tab->fib, &fit, net, n)
- {
- ncnt++;
- if (!n->routes) /* Orphaned FIB entry */
- {
- FIB_ITERATE_PUT(&fit);
- fib_delete(&tab->fib, n);
- ndel++;
- goto again;
- }
- }
- FIB_ITERATE_END;
- DBG("Pruned %d of %d networks\n", ndel, ncnt);
+ if (tab->prune_state == 0)
+ ev_schedule(tab->rt_event);
- tab->gc_counter = 0;
- tab->gc_time = now;
- tab->gc_scheduled = 0;
+ /* state change 0->1, 2->3 */
+ tab->prune_state |= 1;
}
+
static void
rt_event(void *ptr)
{
rt_next_hop_update(tab);
if (tab->prune_state)
- if (!rt_prune_table(tab))
- {
- /* Table prune unfinished */
- ev_schedule(tab->rt_event);
- return;
- }
-
- if (tab->gc_scheduled)
- {
- rt_prune_nets(tab);
- rt_prune_sources(); // FIXME this should be moved to independent event
- }
+ rt_prune_table(tab);
}
void
t->config = cf;
t->addr_type = cf ? cf->addr_type : NET_IP4;
fib_init(&t->fib, p, t->addr_type, sizeof(net), OFFSETOF(net, n), 0, NULL);
- init_list(&t->hooks);
+ init_list(&t->channels);
+
if (cf)
{
t->rt_event = ev_new(p);
}
-static int
-rt_prune_step(rtable *tab, int *limit)
+/**
+ * rt_prune_table - prune a routing table
+ *
+ * The prune loop scans routing tables and removes routes belonging to flushing
+ * protocols, discarded routes and also stale network entries. It is called from
+ * rt_event(). The event is rescheduled if the current iteration do not finish
+ * the table. The pruning is directed by the prune state (@prune_state),
+ * specifying whether the prune cycle is scheduled or running, and there
+ * is also a persistent pruning iterator (@prune_fit).
+ *
+ * The prune loop is used also for channel flushing. For this purpose, the
+ * channels to flush are marked before the iteration and notified after the
+ * iteration.
+ */
+static void
+rt_prune_table(rtable *tab)
{
struct fib_iterator *fit = &tab->prune_fit;
+ int limit = 512;
+
+ struct channel *c;
+ node *n, *x;
DBG("Pruning route table %s\n", tab->name);
#ifdef DEBUGGING
fib_check(&tab->fib);
#endif
- if (tab->prune_state == RPS_NONE)
- return 1;
+ if (tab->prune_state == 0)
+ return;
- if (tab->prune_state == RPS_SCHEDULED)
- {
- FIB_ITERATE_INIT(fit, &tab->fib);
- tab->prune_state = RPS_RUNNING;
- }
+ if (tab->prune_state == 1)
+ {
+ /* Mark channels to flush */
+ WALK_LIST2(c, n, tab->channels, table_node)
+ if (c->channel_state == CS_FLUSHING)
+ c->flush_active = 1;
+
+ FIB_ITERATE_INIT(fit, &tab->fib);
+ tab->prune_state = 2;
+ }
again:
FIB_ITERATE_START(&tab->fib, fit, net, n)
rescan:
for (e=n->routes; e; e=e->next)
- if (e->sender->proto->flushing || (e->flags & REF_DISCARD))
+ if (e->sender->flush_active || (e->flags & REF_DISCARD))
{
- if (*limit <= 0)
+ if (limit <= 0)
{
FIB_ITERATE_PUT(fit);
- return 0;
+ ev_schedule(tab->rt_event);
+ return;
}
rte_discard(tab, e);
- (*limit)--;
+ limit--;
goto rescan;
}
+
if (!n->routes) /* Orphaned FIB entry */
{
FIB_ITERATE_PUT(fit);
fib_check(&tab->fib);
#endif
- tab->prune_state = RPS_NONE;
- return 1;
-}
+ tab->gc_counter = 0;
+ tab->gc_time = now;
-/**
- * rt_prune_table - prune a routing table
- *
- * This function scans the routing table @tab and removes routes belonging to
- * flushing protocols, discarded routes and also stale network entries, in a
- * similar fashion like rt_prune_loop(). Returns 1 when all such routes are
- * pruned. Contrary to rt_prune_loop(), this function is not a part of the
- * protocol flushing loop, but it is called from rt_event() for just one routing
- * table.
- *
- * Note that rt_prune_table() and rt_prune_loop() share (for each table) the
- * prune state (@prune_state) and also the pruning iterator (@prune_fit).
- */
-static inline int
-rt_prune_table(rtable *tab)
-{
- int limit = 512;
- return rt_prune_step(tab, &limit);
-}
+ /* state change 2->0, 3->1 */
+ tab->prune_state &= 1;
-/**
- * rt_prune_loop - prune routing tables
- *
- * The prune loop scans routing tables and removes routes belonging to flushing
- * protocols, discarded routes and also stale network entries. Returns 1 when
- * all such routes are pruned. It is a part of the protocol flushing loop.
- */
-int
-rt_prune_loop(void)
-{
- int limit = 512;
- rtable *t;
+ if (tab->prune_state > 0)
+ ev_schedule(tab->rt_event);
- WALK_LIST(t, routing_tables)
- if (! rt_prune_step(t, &limit))
- return 0;
+ /* FIXME: This should be handled in a better way */
+ rt_prune_sources();
- return 1;
+ /* Close flushed channels */
+ WALK_LIST2_DELSAFE(c, n, x, tab->channels, table_node)
+ if (c->flush_active)
+ {
+ c->flush_active = 0;
+ channel_set_state(c, CS_DOWN);
+ }
+
+ return;
}
void
rt_preconfig(struct config *c)
{
- struct symbol *s = cf_get_symbol("master");
-
init_list(&c->tables);
- c->master_rtc = rt_new_table(s, NET_IP4);
+
+ rt_new_table(cf_get_symbol("master4"), NET_IP4);
+ rt_new_table(cf_get_symbol("master6"), NET_IP6);
}
-/*
+/*
* Some functions for handing internal next hop updates
* triggered by rt_schedule_nhu().
*/
rt_new_table(struct symbol *s, uint addr_type)
{
/* Hack that allows to 'redefine' the master table */
- if ((s->class == SYM_TABLE) && (s->def == new_config->master_rtc))
+ if ((s->class == SYM_TABLE) &&
+ (s->def == new_config->def_tables[addr_type]) &&
+ ((addr_type == NET_IP4) || (addr_type == NET_IP6)))
return s->def;
struct rtable_config *c = cfg_allocz(sizeof(struct rtable_config));
cf_define_symbol(s, SYM_TABLE, c);
c->name = s->name;
c->addr_type = addr_type;
- add_tail(&new_config->tables, &c->n);
c->gc_max_ops = 1000;
c->gc_min_time = 5;
+
+ add_tail(&new_config->tables, &c->n);
+
+ /* First table of each type is kept as default */
+ if (! new_config->def_tables[addr_type])
+ new_config->def_tables[addr_type] = c;
+
return c;
}
}
static inline void
-do_feed_baby(struct proto *p, int type, struct announce_hook *h, net *n, rte *e)
+do_feed_channel(struct channel *c, net *n, rte *e)
{
rte_update_lock();
- if (type == RA_ACCEPTED)
- rt_notify_accepted(h, n, e, NULL, NULL, p->refeeding ? 2 : 1);
- else if (type == RA_MERGED)
- rt_notify_merged(h, n, NULL, NULL, e, p->refeeding ? e : NULL, p->refeeding);
- else
- rt_notify_basic(h, n, e, p->refeeding ? e : NULL, p->refeeding);
+ if (c->ra_mode == RA_ACCEPTED)
+ rt_notify_accepted(c, n, e, NULL, NULL, c->refeeding ? 2 : 1);
+ else if (c->ra_mode == RA_MERGED)
+ rt_notify_merged(c, n, NULL, NULL, e, c->refeeding ? e : NULL, c->refeeding);
+ else /* RA_BASIC */
+ rt_notify_basic(c, n, e, c->refeeding ? e : NULL, c->refeeding);
rte_update_unlock();
}
/**
- * rt_feed_baby - advertise routes to a new protocol
- * @p: protocol to be fed
+ * rt_feed_channel - advertise all routes to a channel
+ * @c: channel to be fed
*
- * This function performs one pass of advertisement of routes to a newly
- * initialized protocol. It's called by the protocol code as long as it
- * has something to do. (We avoid transferring all the routes in single
- * pass in order not to monopolize CPU time.)
+ * This function performs one pass of advertisement of routes to a channel that
+ * is in the ES_FEEDING state. It is called by the protocol code as long as it
+ * has something to do. (We avoid transferring all the routes in single pass in
+ * order not to monopolize CPU time.)
*/
int
-rt_feed_baby(struct proto *p)
+rt_feed_channel(struct channel *c)
{
- struct announce_hook *h;
- struct fib_iterator *fit;
+ struct fib_iterator *fit = &c->feed_fit;
int max_feed = 256;
- if (!p->feed_ahook) /* Need to initialize first */
+ ASSERT(c->export_state == ES_FEEDING);
+
+ if (!c->feed_active)
{
- if (!p->ahooks)
- return 1;
- DBG("Announcing routes to new protocol %s\n", p->name);
- p->feed_ahook = p->ahooks;
- fit = p->feed_iterator = mb_alloc(p->pool, sizeof(struct fib_iterator));
- goto next_hook;
+ FIB_ITERATE_INIT(fit, &c->table->fib);
+ c->feed_active = 1;
}
- fit = p->feed_iterator;
-again:
- h = p->feed_ahook;
- FIB_ITERATE_START(&h->table->fib, fit, net, n)
+ FIB_ITERATE_START(&c->table->fib, fit, net, n)
{
rte *e = n->routes;
if (max_feed <= 0)
return 0;
}
- /* XXXX perhaps we should change feed for RA_ACCEPTED to not use 'new' */
+ /* FIXME: perhaps we should change feed for RA_ACCEPTED to not use 'new' */
- if ((p->accept_ra_types == RA_OPTIMAL) ||
- (p->accept_ra_types == RA_ACCEPTED) ||
- (p->accept_ra_types == RA_MERGED))
+ if ((c->ra_mode == RA_OPTIMAL) ||
+ (c->ra_mode == RA_ACCEPTED) ||
+ (c->ra_mode == RA_MERGED))
if (rte_is_valid(e))
{
- if (p->export_state != ES_FEEDING)
- return 1; /* In the meantime, the protocol fell down. */
+ /* In the meantime, the protocol may fell down */
+ if (c->export_state != ES_FEEDING)
+ goto done;
- do_feed_baby(p, p->accept_ra_types, h, n, e);
+ do_feed_channel(c, n, e);
max_feed--;
}
- if (p->accept_ra_types == RA_ANY)
+ if (c->ra_mode == RA_ANY)
for(e = n->routes; e; e = e->next)
{
- if (p->export_state != ES_FEEDING)
- return 1; /* In the meantime, the protocol fell down. */
+ /* In the meantime, the protocol may fell down */
+ if (c->export_state != ES_FEEDING)
+ goto done;
if (!rte_is_valid(e))
continue;
- do_feed_baby(p, RA_ANY, h, n, e);
+ do_feed_channel(c, n, e);
max_feed--;
}
}
FIB_ITERATE_END;
- p->feed_ahook = h->next;
- if (!p->feed_ahook)
- {
- mb_free(p->feed_iterator);
- p->feed_iterator = NULL;
- return 1;
- }
-next_hook:
- h = p->feed_ahook;
- FIB_ITERATE_INIT(fit, &h->table->fib);
- goto again;
+done:
+ c->feed_active = 0;
+ return 1;
}
/**
* rt_feed_baby_abort - abort protocol feeding
- * @p: protocol
+ * @c: channel
*
- * This function is called by the protocol code when the protocol
- * stops or ceases to exist before the last iteration of rt_feed_baby()
- * has finished.
+ * This function is called by the protocol code when the protocol stops or
+ * ceases to exist during the feeding.
*/
void
-rt_feed_baby_abort(struct proto *p)
+rt_feed_channel_abort(struct channel *c)
{
- if (p->feed_ahook)
+ if (c->feed_active)
{
- /* Unlink the iterator and exit */
- fit_get(&p->feed_ahook->table->fib, p->feed_iterator);
- p->feed_ahook = NULL;
+ /* Unlink the iterator */
+ fit_get(&c->table->fib, &c->feed_fit);
+ c->feed_active = 0;
}
}
-
static inline unsigned
ptr_hash(void *ptr)
{
rte *e, *ee;
byte ia[NET_MAX_TEXT_LENGTH+1];
struct ea_list *tmpa;
- struct announce_hook *a = NULL;
+ struct channel *ec = d->export_channel;
int first = 1;
int pass = 0;
bsprintf(ia, "%N", n->n.addr);
- if (d->export_mode)
- {
- if (! d->export_protocol->rt_notify)
- return;
-
- a = proto_find_announce_hook(d->export_protocol, d->table);
- if (!a)
- return;
- }
for (e = n->routes; e; e = e->next)
{
tmpa = make_tmp_attrs(e, rte_update_pool);
/* Special case for merged export */
- if ((d->export_mode == RSEM_EXPORT) && (d->export_protocol->accept_ra_types == RA_MERGED))
+ if ((d->export_mode == RSEM_EXPORT) && (ec->ra_mode == RA_MERGED))
{
rte *rt_free;
- e = rt_export_merged(a, n, &rt_free, &tmpa, 1);
+ e = rt_export_merged(ec, n, &rt_free, &tmpa, 1);
pass = 1;
if (!e)
struct proto *ep = d->export_protocol;
int ic = ep->import_control ? ep->import_control(ep, &e, &tmpa, rte_update_pool) : 0;
- if (ep->accept_ra_types == RA_OPTIMAL || ep->accept_ra_types == RA_MERGED)
+ if (ec->ra_mode == RA_OPTIMAL || ec->ra_mode == RA_MERGED)
pass = 1;
if (ic < 0)
* command may change the export filter and do not update routes.
*/
int do_export = (ic > 0) ||
- (f_run(a->out_filter, &e, &tmpa, rte_update_pool, FF_FORCE_TMPATTR) <= F_ACCEPT);
+ (f_run(ec->out_filter, &e, &tmpa, rte_update_pool, FF_FORCE_TMPATTR) <= F_ACCEPT);
if (do_export != (d->export_mode == RSEM_EXPORT))
goto skip;
- if ((d->export_mode == RSEM_EXPORT) && (ep->accept_ra_types == RA_ACCEPTED))
+ if ((d->export_mode == RSEM_EXPORT) && (ec->ra_mode == RA_ACCEPTED))
pass = 1;
}
}
}
}
+static struct channel *
+rt_show_export_channel(struct rt_show_data *d)
+{
+ if (! d->export_protocol->rt_notify)
+ return NULL;
+
+ return proto_find_channel_by_table(d->export_protocol, d->table);
+}
+
static void
rt_show_cont(struct cli *c)
{
struct fib *fib = &d->table->fib;
struct fib_iterator *it = &d->fit;
- FIB_ITERATE_START(fib, it, net, n)
+ if (d->export_mode)
{
- if (d->running_on_config && d->running_on_config != config)
- {
- cli_printf(c, 8004, "Stopped due to reconfiguration");
- goto done;
- }
- if (d->export_protocol && (d->export_protocol->export_state == ES_DOWN))
- {
- cli_printf(c, 8005, "Protocol is down");
+ /* Ensure we have current export channel */
+ d->export_channel = rt_show_export_channel(d);
+ if (!d->export_channel || (d->export_channel->export_state == ES_DOWN))
+ {
+ cli_printf(c, 8005, "Channel is down");
goto done;
}
+ }
+
+ FIB_ITERATE_START(fib, it, net, n)
+ {
if (!max--)
{
FIB_ITERATE_PUT(it);
fit_get(&d->table->fib, &d->fit);
}
+static inline rtable *
+rt_show_get_table(struct proto *p)
+{
+ /* FIXME: Use a better way to handle multi-channel protocols */
+
+ if (p->main_channel)
+ return p->main_channel->table;
+
+ if (!EMPTY_LIST(p->channels))
+ return ((struct channel *) HEAD(p->channels))->table;
+
+ return NULL;
+}
+
void
rt_show(struct rt_show_data *d)
{
net *n;
/* Default is either a master table or a table related to a respective protocol */
- if (!d->table && d->export_protocol) d->table = d->export_protocol->table;
- if (!d->table && d->show_protocol) d->table = d->show_protocol->table;
- if (!d->table) d->table = config->master_rtc->table;
+ if (!d->table && d->export_protocol) d->table = rt_show_get_table(d->export_protocol);
+ if (!d->table && d->show_protocol) d->table = rt_show_get_table(d->show_protocol);
+ if (!d->table) d->table = config->def_tables[NET_IP4]->table; /* FIXME: iterate through all tables ? */
/* Filtered routes are neither exported nor have sensible ordering */
if (d->filtered && (d->export_mode || d->primary_only))
}
else
{
+ if (d->export_mode)
+ {
+ /* Find channel associated with the export protocol */
+ d->export_channel = rt_show_export_channel(d);
+ if (!d->export_channel || (d->export_channel->export_state == ES_DOWN))
+ {
+ cli_msg(8005, "Channel is down");
+ return;
+ }
+ }
+
if (d->show_for)
n = net_route(d->table, d->addr);
else
static struct proto *
bfd_init(struct proto_config *c)
{
- struct proto *p = proto_new(c, sizeof(struct bfd_proto));
+ struct proto *p = proto_new(c);
p->neigh_notify = bfd_neigh_notify;
struct protocol proto_bfd = {
.name = "BFD",
.template = "bfd%d",
+ .proto_size = sizeof(struct bfd_proto),
.config_size = sizeof(struct bfd_config),
.init = bfd_init,
.start = bfd_start,
bgp_copy_config(struct proto_config *dest, struct proto_config *src)
{
/* Just a shallow copy */
- proto_copy_rest(dest, src, sizeof(struct bgp_config));
}
| bgp_proto CAPABILITIES bool ';' { BGP_CFG->capabilities = $3; }
| bgp_proto ADVERTISE IPV4 bool ';' { BGP_CFG->advertise_ipv4 = $4; }
| bgp_proto PASSWORD text ';' { BGP_CFG->password = $3; }
- | bgp_proto ROUTE LIMIT expr ';' {
- this_proto->in_limit = cfg_allocz(sizeof(struct proto_limit));
- this_proto->in_limit->limit = $4;
- this_proto->in_limit->action = PLA_RESTART;
- log(L_WARN "%s: Route limit option is deprecated, use import limit", this_proto->name);
- }
| bgp_proto PASSIVE bool ';' { BGP_CFG->passive = $3; }
| bgp_proto INTERPRET COMMUNITIES bool ';' { BGP_CFG->interpret_communities = $4; }
| bgp_proto SECONDARY bool ';' { BGP_CFG->secondary = $3; }
if (EMPTY_LIST(cf->area_list))
cf_error( "No configured areas in OSPF");
+ /* Define default channel */
+ if (EMPTY_LIST(this_proto->channels))
+ channel_config_new(NULL, this_proto->net_type, this_proto);
+
int areano = 0;
int backbone = 0;
int nssa = 0;
cf->abr = areano > 1;
/* Route export or NSSA translation (RFC 3101 3.1) */
- cf->asbr = (this_proto->out_filter != FILTER_REJECT) || (nssa && cf->abr);
+ cf->asbr = (proto_cf_main_channel(this_proto)->out_filter != FILTER_REJECT) || (nssa && cf->abr);
if (cf->abr && !backbone)
{
| OSPF3 { $$ = 0; }
;
-ospf_proto_start: proto_start ospf_variant {
- this_proto = proto_config_new(&proto_ospf, $1);
- init_list(&OSPF_CFG->area_list);
- init_list(&OSPF_CFG->vlink_list);
- OSPF_CFG->tick = OSPF_DEFAULT_TICK;
- OSPF_CFG->ospf2 = $2;
- }
- ;
+ospf_proto_start: proto_start ospf_variant
+{
+ this_proto = proto_config_new(&proto_ospf, $1);
+ this_proto->net_type = $2 ? NET_IP4 : NET_IP6;
+
+ init_list(&OSPF_CFG->area_list);
+ init_list(&OSPF_CFG->vlink_list);
+ OSPF_CFG->tick = OSPF_DEFAULT_TICK;
+ OSPF_CFG->ospf2 = $2;
+};
ospf_proto:
ospf_proto_start proto_name '{'
ospf_proto_item:
proto_item
+ | proto_channel
| RFC1583COMPAT bool { OSPF_CFG->rfc1583 = $2; }
| STUB ROUTER bool { OSPF_CFG->stub_router = $3; }
| ECMP bool { OSPF_CFG->ecmp = $2 ? OSPF_DEFAULT_ECMP_LIMIT : 0; }
static int ospf_import_control(struct proto *P, rte **new, ea_list **attrs, struct linpool *pool);
static struct ea_list *ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool);
static void ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs);
-static int ospf_reload_routes(struct proto *P);
+static void ospf_reload_routes(struct channel *C);
static int ospf_rte_better(struct rte *new, struct rte *old);
static int ospf_rte_same(struct rte *new, struct rte *old);
static void ospf_disp(timer *timer);
}
static struct proto *
-ospf_init(struct proto_config *c)
+ospf_init(struct proto_config *CF)
{
- struct ospf_config *oc = (struct ospf_config *) c;
- struct proto *P = proto_new(c, sizeof(struct ospf_proto));
+ struct ospf_config *cf = (struct ospf_config *) CF;
+ struct proto *P = proto_new(CF);
+
+ P->main_channel = proto_add_channel(P, proto_cf_main_channel(CF));
- P->accept_ra_types = RA_OPTIMAL;
P->rt_notify = ospf_rt_notify;
P->if_notify = ospf_if_notify;
- P->ifa_notify = oc->ospf2 ? ospf_ifa_notify2 : ospf_ifa_notify3;
+ P->ifa_notify = cf->ospf2 ? ospf_ifa_notify2 : ospf_ifa_notify3;
P->import_control = ospf_import_control;
P->reload_routes = ospf_reload_routes;
P->make_tmp_attrs = ospf_make_tmp_attrs;
p->calcrt = 1;
}
-static int
-ospf_reload_routes(struct proto *P)
+static void
+ospf_reload_routes(struct channel *C)
{
- struct ospf_proto *p = (struct ospf_proto *) P;
+ struct ospf_proto *p = (struct ospf_proto *) C->proto;
- if (p->calcrt != 2)
- OSPF_TRACE(D_EVENTS, "Scheduling routing table calculation with route reload");
+ if (p->calcrt == 2)
+ return;
+ OSPF_TRACE(D_EVENTS, "Scheduling routing table calculation with route reload");
p->calcrt = 2;
-
- return 1;
}
* nonbroadcast network, cost of interface, etc.
*/
static int
-ospf_reconfigure(struct proto *P, struct proto_config *c)
+ospf_reconfigure(struct proto *P, struct proto_config *CF)
{
struct ospf_proto *p = (struct ospf_proto *) P;
struct ospf_config *old = (struct ospf_config *) (P->cf);
- struct ospf_config *new = (struct ospf_config *) c;
+ struct ospf_config *new = (struct ospf_config *) CF;
struct ospf_area_config *nac;
struct ospf_area *oa, *oax;
struct ospf_iface *ifa, *ifx;
struct ospf_iface_patt *ip;
- if (proto_get_router_id(c) != p->router_id)
+ if (proto_get_router_id(CF) != p->router_id)
return 0;
if (p->ospf2 != new->ospf2)
if (old->abr != new->abr)
return 0;
+ if (!proto_configure_channel(P, &P->main_channel, proto_cf_main_channel(CF)))
+ return 0;
+
p->stub_router = new->stub_router;
p->merge_external = new->merge_external;
p->asbr = new->asbr;
.template = "ospf%d",
.attr_class = EAP_OSPF,
.preference = DEF_PREF_OSPF,
+ .channel_mask = NB_IP,
+ .proto_size = sizeof(struct ospf_proto),
.config_size = sizeof(struct ospf_config),
.init = ospf_init,
.dump = ospf_dump,
if (reload || ort_changed(nf, &a0))
{
- net *ne = net_get(p->p.table, nf->fn.addr);
+ net *ne = net_get(p->p.main_channel->table, nf->fn.addr);
rta *a = rta_lookup(&a0);
rte *e = rte_get_temp(a);
e->u.ospf.router_id = nf->old_rid = nf->n.rid;
e->pflags = 0;
e->net = ne;
- e->pref = p->p.preference;
DBG("Mod rte type %d - %N via %I on iface %s, met %d\n",
a0.source, nf->fn.addr, a0.gw, a0.iface ? a0.iface->name : "(none)", nf->n.metric1);
rta_free(nf->old_rta);
nf->old_rta = NULL;
- net *ne = net_get(p->p.table, nf->fn.addr);
+ net *ne = net_get(p->p.main_channel->table, nf->fn.addr);
rte_update(&p->p, ne, NULL);
}
CF_DECLS
-CF_KEYWORDS(PIPE, PEER, TABLE, MODE, OPAQUE, TRANSPARENT)
+CF_KEYWORDS(PIPE, PEER, TABLE)
CF_GRAMMAR
-CF_ADDTO(proto, pipe_proto '}')
+CF_ADDTO(proto, pipe_proto '}' { this_channel = NULL; } )
-pipe_proto_start: proto_start PIPE {
- this_proto = proto_config_new(&proto_pipe, $1);
- PIPE_CFG->mode = PIPE_TRANSPARENT;
- }
- ;
+pipe_proto_start: proto_start PIPE
+{
+ this_proto = proto_config_new(&proto_pipe, $1);
+ this_channel = channel_config_new(NULL, 0, this_proto);
+ this_channel->in_filter = FILTER_ACCEPT;
+ this_channel->out_filter = FILTER_ACCEPT;
+};
pipe_proto:
pipe_proto_start proto_name '{'
| pipe_proto proto_item ';'
- | pipe_proto PEER TABLE SYM ';' {
- if ($4->class != SYM_TABLE)
- cf_error("Routing table name expected");
- PIPE_CFG->peer = $4->def;
- }
- | pipe_proto MODE OPAQUE ';' { PIPE_CFG->mode = PIPE_OPAQUE; }
- | pipe_proto MODE TRANSPARENT ';' { PIPE_CFG->mode = PIPE_TRANSPARENT; }
+ | pipe_proto channel_item ';'
+ | pipe_proto PEER TABLE rtable ';' { PIPE_CFG->peer = $4; }
;
CF_CODE
static void
pipe_rt_notify(struct proto *P, rtable *src_table, net *n, rte *new, rte *old, ea_list *attrs)
{
- struct pipe_proto *p = (struct pipe_proto *) P;
- struct announce_hook *ah = (src_table == P->table) ? p->peer_ahook : P->main_ahook;
- rtable *dst_table = ah->table;
+ struct pipe_proto *p = (void *) P;
+ struct channel *dst = (src_table == p->pri->table) ? p->sec : p->pri;
struct rte_src *src;
net *nn;
if (!new && !old)
return;
- if (dst_table->pipe_busy)
+ if (dst->table->pipe_busy)
{
log(L_ERR "Pipe loop detected when sending %N to table %s",
- n->n.addr, dst_table->name);
+ n->n.addr, dst->table->name);
return;
}
- nn = net_get(dst_table, n->n.addr);
+ nn = net_get(dst->table, n->n.addr);
if (new)
{
memcpy(&a, new->attrs, sizeof(rta));
- if (p->mode == PIPE_OPAQUE)
- {
- a.src = P->main_source;
- a.source = RTS_PIPE;
- }
-
a.aflags = 0;
a.eattrs = attrs;
a.hostentry = NULL;
e->net = nn;
e->pflags = 0;
- if (p->mode == PIPE_TRANSPARENT)
- {
- /* Copy protocol specific embedded attributes. */
- memcpy(&(e->u), &(new->u), sizeof(e->u));
- e->pref = new->pref;
- e->pflags = new->pflags;
- }
+ /* Copy protocol specific embedded attributes. */
+ memcpy(&(e->u), &(new->u), sizeof(e->u));
+ e->pref = new->pref;
+ e->pflags = new->pflags;
src = a.src;
}
}
src_table->pipe_busy = 1;
- rte_update2(ah, nn, e, src);
+ rte_update2(dst, nn, e, src);
src_table->pipe_busy = 0;
}
if (pp == P)
return -1; /* Avoid local loops automatically */
+
return 0;
}
-static int
-pipe_reload_routes(struct proto *P)
+static void
+pipe_reload_routes(struct channel *C)
{
- struct pipe_proto *p = (struct pipe_proto *) P;
-
- /*
- * Because the pipe protocol feeds routes from both routing tables
- * together, both directions are reloaded during refeed and 'reload
- * out' command works like 'reload' command. For symmetry, we also
- * request refeed when 'reload in' command is used.
- */
- proto_request_feeding(P);
+ struct pipe_proto *p = (void *) C->proto;
- proto_reset_limit(P->main_ahook->in_limit);
- proto_reset_limit(p->peer_ahook->in_limit);
-
- return 1;
+ /* Route reload on one channel is just refeed on the other */
+ channel_request_feeding((C == p->pri) ? p->sec : p->pri);
}
-static struct proto *
-pipe_init(struct proto_config *C)
-{
- struct pipe_config *c = (struct pipe_config *) C;
- struct proto *P = proto_new(C, sizeof(struct pipe_proto));
- struct pipe_proto *p = (struct pipe_proto *) P;
- p->mode = c->mode;
- p->peer_table = c->peer->table;
- P->accept_ra_types = (p->mode == PIPE_OPAQUE) ? RA_OPTIMAL : RA_ANY;
- P->rt_notify = pipe_rt_notify;
- P->import_control = pipe_import_control;
- P->reload_routes = pipe_reload_routes;
-
- return P;
-}
-
-static int
-pipe_start(struct proto *P)
+static void
+pipe_postconfig(struct proto_config *CF)
{
- struct pipe_config *cf = (struct pipe_config *) P->cf;
- struct pipe_proto *p = (struct pipe_proto *) P;
+ struct pipe_config *cf = (void *) CF;
+ struct channel_config *cc = proto_cf_main_channel(CF);
- /* Lock both tables, unlock is handled in pipe_cleanup() */
- rt_lock_table(P->table);
- rt_lock_table(p->peer_table);
+ if (!cc->table)
+ cf_error("Primary routing table not specified");
- /* Going directly to PS_UP - prepare for feeding,
- connect the protocol to both routing tables */
+ if (!cf->peer)
+ cf_error("Secondary routing table not specified");
- P->main_ahook = proto_add_announce_hook(P, P->table, &P->stats);
- P->main_ahook->out_filter = cf->c.out_filter;
- P->main_ahook->in_limit = cf->c.in_limit;
- proto_reset_limit(P->main_ahook->in_limit);
+ if (cc->table == cf->peer)
+ cf_error("Primary table and peer table must be different");
- p->peer_ahook = proto_add_announce_hook(P, p->peer_table, &p->peer_stats);
- p->peer_ahook->out_filter = cf->c.in_filter;
- p->peer_ahook->in_limit = cf->c.out_limit;
- proto_reset_limit(p->peer_ahook->in_limit);
+ if (cc->table->addr_type != cf->peer->addr_type)
+ cf_error("Primary table and peer table must have the same type");
- if (p->mode == PIPE_OPAQUE)
- {
- P->main_source = rt_get_source(P, 0);
- rt_lock_source(P->main_source);
- }
+ if (cc->rx_limit.action)
+ cf_error("Pipe protocol does not support receive limits");
- return PS_UP;
+ if (cc->in_keep_filtered)
+ cf_error("Pipe protocol prohibits keeping filtered routes");
}
-static void
-pipe_cleanup(struct proto *P)
+static int
+pipe_configure_channels(struct pipe_proto *p, struct pipe_config *cf)
{
- struct pipe_proto *p = (struct pipe_proto *) P;
-
- bzero(&P->stats, sizeof(struct proto_stats));
- bzero(&p->peer_stats, sizeof(struct proto_stats));
-
- P->main_ahook = NULL;
- p->peer_ahook = NULL;
-
- if (p->mode == PIPE_OPAQUE)
- rt_unlock_source(P->main_source);
- P->main_source = NULL;
-
- rt_unlock_table(P->table);
- rt_unlock_table(p->peer_table);
+ struct channel_config *cc = proto_cf_main_channel(&cf->c);
+
+ struct channel_config pri_cf = {
+ .name = "pri",
+ .channel = cc->channel,
+ .table = cc->table,
+ .out_filter = cc->out_filter,
+ .in_limit = cc->in_limit,
+ .ra_mode = RA_ANY
+ };
+
+ struct channel_config sec_cf = {
+ .name = "sec",
+ .channel = cc->channel,
+ .table = cf->peer,
+ .out_filter = cc->in_filter,
+ .in_limit = cc->out_limit,
+ .ra_mode = RA_ANY
+ };
+
+ return
+ proto_configure_channel(&p->p, &p->pri, &pri_cf) &&
+ proto_configure_channel(&p->p, &p->sec, &sec_cf);
}
-static void
-pipe_postconfig(struct proto_config *C)
+static struct proto *
+pipe_init(struct proto_config *CF)
{
- struct pipe_config *c = (struct pipe_config *) C;
+ struct proto *P = proto_new(CF);
+ struct pipe_proto *p = (void *) P;
+ struct pipe_config *cf = (void *) CF;
- if (!c->peer)
- cf_error("Name of peer routing table not specified");
- if (c->peer == C->table)
- cf_error("Primary table and peer table must be different");
+ P->rt_notify = pipe_rt_notify;
+ P->import_control = pipe_import_control;
+ P->reload_routes = pipe_reload_routes;
- if (C->in_keep_filtered)
- cf_error("Pipe protocol prohibits keeping filtered routes");
- if (C->rx_limit)
- cf_error("Pipe protocol does not support receive limits");
-}
+ pipe_configure_channels(p, cf);
-extern int proto_reconfig_type;
+ return P;
+}
static int
-pipe_reconfigure(struct proto *P, struct proto_config *new)
+pipe_reconfigure(struct proto *P, struct proto_config *CF)
{
- struct pipe_proto *p = (struct pipe_proto *)P;
- struct proto_config *old = P->cf;
- struct pipe_config *oc = (struct pipe_config *) old;
- struct pipe_config *nc = (struct pipe_config *) new;
-
- if ((oc->peer->table != nc->peer->table) || (oc->mode != nc->mode))
- return 0;
-
- /* Update output filters in ahooks */
- if (P->main_ahook)
- {
- P->main_ahook->out_filter = new->out_filter;
- P->main_ahook->in_limit = new->in_limit;
- proto_verify_limits(P->main_ahook);
- }
-
- if (p->peer_ahook)
- {
- p->peer_ahook->out_filter = new->in_filter;
- p->peer_ahook->in_limit = new->out_limit;
- proto_verify_limits(p->peer_ahook);
- }
-
- if ((P->proto_state != PS_UP) || (proto_reconfig_type == RECONFIG_SOFT))
- return 1;
-
- if ((new->preference != old->preference)
- || ! filter_same(new->in_filter, old->in_filter)
- || ! filter_same(new->out_filter, old->out_filter))
- proto_request_feeding(P);
+ struct pipe_proto *p = (void *) P;
+ struct pipe_config *cf = (void *) CF;
- return 1;
+ return pipe_configure_channels(p, cf);
}
static void
pipe_copy_config(struct proto_config *dest, struct proto_config *src)
{
/* Just a shallow copy, not many items here */
- proto_copy_rest(dest, src, sizeof(struct pipe_config));
}
static void
pipe_get_status(struct proto *P, byte *buf)
{
- struct pipe_proto *p = (struct pipe_proto *) P;
+ struct pipe_proto *p = (void *) P;
- bsprintf(buf, "%c> %s", (p->mode == PIPE_OPAQUE) ? '-' : '=', p->peer_table->name);
+ bsprintf(buf, "%s <=> %s", p->pri->table->name, p->sec->table->name);
}
static void
pipe_show_stats(struct pipe_proto *p)
{
- struct proto_stats *s1 = &p->p.stats;
- struct proto_stats *s2 = &p->peer_stats;
+ struct proto_stats *s1 = &p->pri->stats;
+ struct proto_stats *s2 = &p->sec->stats;
/*
* Pipe stats (as anything related to pipes) are a bit tricky. There
static void
pipe_show_proto_info(struct proto *P)
{
- struct pipe_proto *p = (struct pipe_proto *) P;
- struct pipe_config *cf = (struct pipe_config *) P->cf;
+ struct pipe_proto *p = (void *) P;
- // cli_msg(-1006, " Table: %s", P->table->name);
- // cli_msg(-1006, " Peer table: %s", p->peer_table->name);
- cli_msg(-1006, " Preference: %d", P->preference);
- cli_msg(-1006, " Input filter: %s", filter_name(cf->c.in_filter));
- cli_msg(-1006, " Output filter: %s", filter_name(cf->c.out_filter));
+ cli_msg(-1006, " Channel %s", "main");
+ cli_msg(-1006, " Table: %s", p->pri->table->name);
+ cli_msg(-1006, " Peer table: %s", p->sec->table->name);
+ cli_msg(-1006, " Import filter: %s", filter_name(p->sec->out_filter));
+ cli_msg(-1006, " Export filter: %s", filter_name(p->pri->out_filter));
- proto_show_limit(cf->c.in_limit, "Import limit:");
- proto_show_limit(cf->c.out_limit, "Export limit:");
+ channel_show_limit(&p->pri->in_limit, "Import limit:");
+ channel_show_limit(&p->sec->in_limit, "Export limit:");
if (P->proto_state != PS_DOWN)
pipe_show_stats(p);
struct protocol proto_pipe = {
.name = "Pipe",
.template = "pipe%d",
- .multitable = 1,
- .preference = DEF_PREF_PIPE,
+ .proto_size = sizeof(struct pipe_proto),
.config_size = sizeof(struct pipe_config),
.postconfig = pipe_postconfig,
.init = pipe_init,
- .start = pipe_start,
- .cleanup = pipe_cleanup,
.reconfigure = pipe_reconfigure,
.copy_config = pipe_copy_config,
.get_status = pipe_get_status,
#ifndef _BIRD_PIPE_H_
#define _BIRD_PIPE_H_
-#define PIPE_OPAQUE 0
-#define PIPE_TRANSPARENT 1
-
struct pipe_config {
struct proto_config c;
struct rtable_config *peer; /* Table we're connected to */
- int mode; /* PIPE_OPAQUE or PIPE_TRANSPARENT */
};
struct pipe_proto {
struct proto p;
- struct rtable *peer_table;
- struct announce_hook *peer_ahook; /* Announce hook for direction peer->primary */
- struct proto_stats peer_stats; /* Statistics for the direction peer->primary */
- int mode; /* PIPE_OPAQUE or PIPE_TRANSPARENT */
+ struct channel *pri;
+ struct channel *sec;
};
-
-extern struct protocol proto_pipe;
-
-static inline int proto_is_pipe(struct proto *p)
-{ return p->proto == &proto_pipe; }
-
#endif
radv_proto_start: proto_start RADV
{
this_proto = proto_config_new(&proto_radv, $1);
+
init_list(&RADV_CFG->patt_list);
init_list(&RADV_CFG->pref_list);
init_list(&RADV_CFG->rdnss_list);
radv_proto_item:
proto_item
+ | proto_channel
| INTERFACE radv_iface
| PREFIX radv_prefix { add_tail(&RADV_CFG->pref_list, NODE this_radv_prefix); }
| RDNSS { init_list(&radv_dns_list); } radv_rdnss { add_tail_list(&RADV_CFG->rdnss_list, &radv_dns_list); }
| DNSSL { init_list(&radv_dns_list); } radv_dnssl { add_tail_list(&RADV_CFG->dnssl_list, &radv_dns_list); }
- | TRIGGER net_any {
- RADV_CFG->trigger = $2;
- RADV_CFG->trigger_valid = 1;
- }
+ | TRIGGER net_ip6 { RADV_CFG->trigger = $2; }
;
radv_proto_opts:
radv_iface_notify(ifa, RA_EV_CHANGE);
}
-static inline int radv_net_match_trigger(struct radv_config *cf, net *n)
+static inline int
+radv_trigger_valid(struct radv_config *cf)
{
- return cf->trigger_valid && net_equal(n->n.addr, cf->trigger);
+ return cf->trigger.type != 0;
+}
+
+static inline int
+radv_net_match_trigger(struct radv_config *cf, net *n)
+{
+ return radv_trigger_valid(cf) && net_equal(n->n.addr, &cf->trigger);
}
int
{
struct radv_config *cf = (struct radv_config *) (ra->p.cf);
- if (! cf->trigger_valid)
+ if (!radv_trigger_valid(cf))
return 1;
- return rt_examine(ra->p.table, cf->trigger, &ra->p, ra->p.cf->out_filter);
+ struct channel *c =ra->p.main_channel;
+ return rt_examine(c->table, &cf->trigger, &ra->p, c->out_filter);
+}
+
+static void
+radv_postconfig(struct proto_config *CF)
+{
+ // struct radv_config *cf = (void *) CF;
+
+ /* Define default channel */
+ if (EMPTY_LIST(CF->channels))
+ channel_config_new(NULL, NET_IP6, CF);
}
static struct proto *
-radv_init(struct proto_config *c)
+radv_init(struct proto_config *CF)
{
- struct proto *p = proto_new(c, sizeof(struct proto_radv));
+ struct proto *p = proto_new(CF);
+
+ p->main_channel = proto_add_channel(p, proto_cf_main_channel(CF));
- p->accept_ra_types = RA_OPTIMAL;
p->import_control = radv_import_control;
p->rt_notify = radv_rt_notify;
p->if_notify = radv_if_notify;
p->ifa_notify = radv_ifa_notify;
+
return p;
}
struct radv_config *cf = (struct radv_config *) (p->cf);
init_list(&(ra->iface_list));
- ra->active = !cf->trigger_valid;
+ ra->active = !radv_trigger_valid(cf);
return PS_UP;
}
}
static int
-radv_reconfigure(struct proto *p, struct proto_config *c)
+radv_reconfigure(struct proto *p, struct proto_config *CF)
{
struct proto_radv *ra = (struct proto_radv *) p;
// struct radv_config *old = (struct radv_config *) (p->cf);
- struct radv_config *new = (struct radv_config *) c;
+ struct radv_config *new = (struct radv_config *) CF;
/*
* The question is why there is a reconfigure function for RAdv if
* causing nodes to temporary remove their default routes.
*/
- p->cf = c; /* radv_check_active() requires proper p->cf */
+ if (!proto_configure_channel(p, &p->main_channel, proto_cf_main_channel(CF)))
+ return 0;
+
+ p->cf = CF; /* radv_check_active() requires proper p->cf */
ra->active = radv_check_active(ra);
struct iface *iface;
struct protocol proto_radv = {
.name = "RAdv",
.template = "radv%d",
+ .channel_mask = NB_IP6,
+ .proto_size = sizeof(struct proto_radv),
.config_size = sizeof(struct radv_config),
+ .postconfig = radv_postconfig,
.init = radv_init,
.start = radv_start,
.shutdown = radv_shutdown,
list rdnss_list; /* Global list of RDNSS configs (struct radv_rdnss_config) */
list dnssl_list; /* Global list of DNSSL configs (struct radv_dnssl_config) */
- net_addr *trigger; /* Prefix of a trigger route, if defined */
- u8 trigger_valid; /* Whether a trigger route is defined */
+ net_addr trigger; /* Prefix of a trigger route, if defined */
};
struct radv_iface_config
rip_proto_start: proto_start rip_variant
{
this_proto = proto_config_new(&proto_rip, $1);
- init_list(&RIP_CFG->patt_list);
+ this_proto->net_type = $2 ? NET_IP4 : NET_IP6;
+ init_list(&RIP_CFG->patt_list);
RIP_CFG->rip2 = $2;
RIP_CFG->infinity = RIP_DEFAULT_INFINITY;
-
RIP_CFG->min_timeout_time = 60;
RIP_CFG->max_garbage_time = 60;
};
rip_proto_item:
proto_item
+ | proto_channel
| ECMP bool { RIP_CFG->ecmp = $2 ? RIP_DEFAULT_ECMP_LIMIT : 0; }
| ECMP bool LIMIT expr { RIP_CFG->ecmp = $2 ? $4 : 0; if ($4 < 0) cf_error("ECMP limit cannot be negative"); }
| INFINITY expr { RIP_CFG->infinity = $2; }
if (rt)
{
/* Update */
- net *n = net_get(p->p.table, en->n.addr);
+ net *n = net_get(p->p.main_channel->table, en->n.addr);
rta a0 = {
.src = p->p.main_source,
else
{
/* Withdraw */
- net *n = net_find(p->p.table, en->n.addr);
+ net *n = net_find(p->p.main_channel->table, en->n.addr);
rte_update(&p->p, n, NULL);
}
}
return 0;
}
-static int
-rip_reload_routes(struct proto *P)
+static void
+rip_reload_routes(struct channel *C)
{
- struct rip_proto *p = (struct rip_proto *) P;
+ struct rip_proto *p = (struct rip_proto *) C->proto;
if (p->rt_reload)
- return 1;
+ return;
TRACE(D_EVENTS, "Scheduling route reload");
p->rt_reload = 1;
rip_kick_timer(p);
-
- return 1;
}
static struct ea_list *
}
+static void
+rip_postconfig(struct proto_config *CF)
+{
+ // struct rip_config *cf = (void *) CF;
+
+ /* Define default channel */
+ if (EMPTY_LIST(CF->channels))
+ channel_config_new(NULL, CF->net_type, CF);
+}
+
static struct proto *
-rip_init(struct proto_config *cfg)
+rip_init(struct proto_config *CF)
{
- struct proto *P = proto_new(cfg, sizeof(struct rip_proto));
+ struct proto *P = proto_new(CF);
+
+ P->main_channel = proto_add_channel(P, proto_cf_main_channel(CF));
- P->accept_ra_types = RA_OPTIMAL;
P->if_notify = rip_if_notify;
P->rt_notify = rip_rt_notify;
P->neigh_notify = rip_neigh_notify;
}
static int
-rip_reconfigure(struct proto *P, struct proto_config *c)
+rip_reconfigure(struct proto *P, struct proto_config *CF)
{
struct rip_proto *p = (void *) P;
- struct rip_config *new = (void *) c;
+ struct rip_config *new = (void *) CF;
// struct rip_config *old = (void *) (P->cf);
if (new->rip2 != p->rip2)
if (new->infinity != p->infinity)
return 0;
+ if (!proto_configure_channel(P, &P->main_channel, proto_cf_main_channel(CF)))
+ return 0;
+
TRACE(D_EVENTS, "Reconfiguring");
- p->p.cf = c;
+ p->p.cf = CF;
p->ecmp = new->ecmp;
rip_reconfigure_ifaces(p, new);
.template = "rip%d",
.attr_class = EAP_RIP,
.preference = DEF_PREF_RIP,
+ .channel_mask = NB_IP,
+ .proto_size = sizeof(struct rip_proto),
.config_size = sizeof(struct rip_config),
+ .postconfig = rip_postconfig,
.init = rip_init,
.dump = rip_dump,
.start = rip_start,
CF_ADDTO(proto, static_proto '}')
-static_proto_start: proto_start STATIC {
- this_proto = proto_config_new(&proto_static, $1);
- static_init_config((struct static_config *) this_proto);
- }
- ;
+static_proto_start: proto_start STATIC
+{
+ this_proto = proto_config_new(&proto_static, $1);
+ static_init_config(STATIC_CFG);
+};
static_proto:
static_proto_start proto_name '{'
| static_proto proto_item ';'
+ | static_proto proto_channel ';' { this_proto->net_type = $2->net_type; }
| static_proto CHECK LINK bool ';' { STATIC_CFG->check_link = $4; }
| static_proto IGP TABLE rtable ';' { STATIC_CFG->igp_table = $4; }
| static_proto stat_route stat_route_opt_list ';' { static_route_finish(); }
p_igp_table(struct proto *p)
{
struct static_config *cf = (void *) p->cf;
- return cf->igp_table ? cf->igp_table->table : p->table;
+ return cf->igp_table ? cf->igp_table->table : p->main_channel->table;
}
static void
}
if (r->dest == RTDX_RECURSIVE)
- rta_set_recursive_next_hop(p->table, &a, p_igp_table(p), &r->via, &r->via);
+ rta_set_recursive_next_hop(p->main_channel->table, &a, p_igp_table(p), &r->via, &r->via);
/* We skip rta_lookup() here */
- n = net_get(p->table, r->net);
+ n = net_get(p->main_channel->table, r->net);
e = rte_get_temp(&a);
e->net = n;
e->pflags = 0;
return;
DBG("Removing static route %N via %I\n", r->net, r->via);
- n = net_find(p->table, r->net);
+ n = net_find(p->main_channel->table, r->net);
rte_update(p, n, NULL);
r->installed = 0;
}
r->installed = 0;
}
+ /* Handle failure during channel reconfigure */
+ /* FIXME: This should be handled in a better way */
+ cf = (void *) p->cf_new;
+ if (cf)
+ {
+ WALK_LIST(r, cf->iface_routes)
+ r->installed = 0;
+ WALK_LIST(r, cf->other_routes)
+ r->installed = 0;
+ }
+
return PS_DOWN;
}
init_list(&c->other_routes);
}
+static void
+static_postconfig(struct proto_config *CF)
+{
+ struct static_config *cf = (void *) CF;
+ struct static_route *r;
+
+ if (EMPTY_LIST(CF->channels))
+ cf_error("Channel not specified");
+
+
+ WALK_LIST(r, cf->iface_routes)
+ if (r->net->type != CF->net_type)
+ cf_error("Route %N incompatible with channel type", r->net);
+
+ WALK_LIST(r, cf->other_routes)
+ if (r->net->type != CF->net_type)
+ cf_error("Route %N incompatible with channel type", r->net);
+}
+
+
static struct proto *
-static_init(struct proto_config *c)
+static_init(struct proto_config *CF)
{
- struct proto *p = proto_new(c, sizeof(struct proto));
+ struct proto *P = proto_new(CF);
+ // struct static_proto *p = (void *) P;
+ // struct static_config *cf = (void *) CF;
- p->neigh_notify = static_neigh_notify;
- p->if_notify = static_if_notify;
- p->rte_mergable = static_rte_mergable;
+ P->main_channel = proto_add_channel(P, proto_cf_main_channel(CF));
- return p;
+ P->neigh_notify = static_neigh_notify;
+ P->if_notify = static_if_notify;
+ P->rte_mergable = static_rte_mergable;
+
+ return P;
}
static inline int
}
static int
-static_reconfigure(struct proto *p, struct proto_config *new)
+static_reconfigure(struct proto *p, struct proto_config *CF)
{
struct static_config *o = (void *) p->cf;
- struct static_config *n = (void *) new;
+ struct static_config *n = (void *) CF;
struct static_route *r;
if (cf_igp_table(o) != cf_igp_table(n))
return 0;
+ if (!proto_configure_channel(p, &p->main_channel, proto_cf_main_channel(CF)))
+ return 0;
+
/* Delete all obsolete routes and reset neighbor entries */
WALK_LIST(r, o->iface_routes)
static_match(p, r, n);
struct static_config *d = (struct static_config *) dest;
struct static_config *s = (struct static_config *) src;
- /* Shallow copy of everything */
- proto_copy_rest(dest, src, sizeof(struct static_config));
-
/* Copy route lists */
static_copy_routes(&d->iface_routes, &s->iface_routes);
static_copy_routes(&d->other_routes, &s->other_routes);
}
-
struct protocol proto_static = {
.name = "Static",
.template = "static%d",
.preference = DEF_PREF_STATIC,
+ .channel_mask = NB_ANY,
+ .proto_size = sizeof(struct proto),
.config_size = sizeof(struct static_config),
+ .postconfig = static_postconfig,
.init = static_init,
.dump = static_dump,
.start = static_start,
src = KRT_SRC_ALIEN;
}
- net *net = net_get(p->p.table, &dst);
+ net *net = net_get(p->p.main_channel->table, &dst);
rta ra = {
.src= p->p.main_source,
#define THIS_KRT ((struct krt_config *) this_proto)
#define THIS_KIF ((struct kif_config *) this_proto)
+static void
+krt_set_merge_paths(struct channel_config *cc, uint merge, uint limit)
+{
+ if ((limit <= 0) || (limit > 255))
+ cf_error("Merge paths limit must be in range 1-255");
+
+ cc->ra_mode = merge ? RA_MERGED : RA_OPTIMAL;
+ cc->merge_limit = limit;
+}
+
CF_DECLS
CF_KEYWORDS(KERNEL, PERSIST, SCAN, TIME, LEARN, DEVICE, ROUTES, GRACEFUL, RESTART, KRT_SOURCE, KRT_METRIC, MERGE, PATHS)
CF_ADDTO(proto, kern_proto '}')
-kern_proto_start: proto_start KERNEL { this_proto = krt_init_config($1); }
+kern_proto_start: proto_start KERNEL {
+ this_proto = krt_init_config($1);
+}
;
CF_ADDTO(kern_proto, kern_proto_start proto_name '{')
-CF_ADDTO(kern_proto, kern_proto proto_item ';')
CF_ADDTO(kern_proto, kern_proto kern_item ';')
kern_item:
- PERSIST bool { THIS_KRT->persist = $2; }
+ proto_item
+ | proto_channel { this_proto->net_type = $1->net_type; }
+ | PERSIST bool { THIS_KRT->persist = $2; }
| SCAN TIME expr {
/* Scan time of 0 means scan on startup only */
THIS_KRT->scan_time = $3;
}
| DEVICE ROUTES bool { THIS_KRT->devroutes = $3; }
| GRACEFUL RESTART bool { THIS_KRT->graceful_restart = $3; }
- | MERGE PATHS bool { THIS_KRT->merge_paths = $3 ? KRT_DEFAULT_ECMP_LIMIT : 0; }
- | MERGE PATHS bool LIMIT expr { THIS_KRT->merge_paths = $3 ? $5 : 0; if (($5 <= 0) || ($5 > 255)) cf_error("Merge paths limit must be in range 1-255"); }
+ | MERGE PATHS bool { krt_set_merge_paths(this_channel, $3, KRT_DEFAULT_ECMP_LIMIT); }
+ | MERGE PATHS bool LIMIT expr { krt_set_merge_paths(this_channel, $3, $5); }
;
/* Kernel interface protocol */
;
CF_ADDTO(kif_proto, kif_proto_start proto_name '{')
-CF_ADDTO(kif_proto, kif_proto proto_item ';')
CF_ADDTO(kif_proto, kif_proto kif_item ';')
kif_item:
- SCAN TIME expr {
+ proto_item
+ | SCAN TIME expr {
/* Scan time of 0 means scan on startup only */
THIS_KIF->scan_time = $3;
}
static struct proto *
kif_init(struct proto_config *c)
{
- struct kif_proto *p = proto_new(c, sizeof(struct kif_proto));
+ struct kif_proto *p = proto_new(c);
kif_sys_init(p);
return &p->p;
struct kif_config *d = (struct kif_config *) dest;
struct kif_config *s = (struct kif_config *) src;
- /* Shallow copy of everything (just scan_time currently) */
- proto_copy_rest(dest, src, sizeof(struct kif_config));
-
/* Copy primary addr list */
cfg_copy_list(&d->primary, &s->primary, sizeof(struct kif_primary_item));
struct protocol proto_unix_iface = {
.name = "Device",
.template = "device%d",
- .preference = DEF_PREF_DIRECT,
+ .proto_size = sizeof(struct kif_proto),
.config_size = sizeof(struct kif_config),
.preconfig = kif_preconfig,
.init = kif_init,
net *n = e->net;
rta *aa = rta_clone(e->attrs);
rte *ee = rte_get_temp(aa);
- net *nn = net_get(p->p.table, n->n.addr);
+ net *nn = net_get(p->p.main_channel->table, n->n.addr);
ee->net = nn;
ee->pflags = 0;
- ee->pref = p->p.preference;
ee->u.krt = e->u.krt;
rte_update(&p->p, nn, ee);
}
static void
krt_learn_announce_delete(struct krt_proto *p, net *n)
{
- n = net_find(p->p.table, n->n.addr);
+ n = net_find(p->p.main_channel->table, n->n.addr);
rte_update(&p->p, n, NULL);
}
static void
krt_flush_routes(struct krt_proto *p)
{
- struct rtable *t = p->p.table;
+ struct rtable *t = p->p.main_channel->table;
KRT_TRACE(p, D_EVENTS, "Flushing kernel routes");
FIB_WALK(&t->fib, net, n)
static struct rte *
krt_export_net(struct krt_proto *p, net *net, rte **rt_free, ea_list **tmpa)
{
- struct announce_hook *ah = p->p.main_ahook;
- struct filter *filter = ah->out_filter;
+ struct channel *c = p->p.main_channel;
+ struct filter *filter = c->out_filter;
rte *rt;
- if (p->p.accept_ra_types == RA_MERGED)
- return rt_export_merged(ah, net, rt_free, tmpa, 1);
+ if (c->ra_mode == RA_MERGED)
+ return rt_export_merged(c, net, rt_free, tmpa, 1);
rt = net->routes;
*rt_free = NULL;
static void
krt_prune(struct krt_proto *p)
{
- struct rtable *t = p->p.table;
+ struct rtable *t = p->p.main_channel->table;
KRT_TRACE(p, D_EVENTS, "Pruning table %s", t->name);
FIB_WALK(&t->fib, net, n)
krt_scan_timer_kick(p);
}
-static int
-krt_reload_routes(struct proto *P)
+static void
+krt_reload_routes(struct channel *C)
{
- struct krt_proto *p = (struct krt_proto *) P;
+ struct krt_proto *p = (void *) C->proto;
/* Although we keep learned routes in krt_table, we rather schedule a scan */
p->reload = 1;
krt_scan_timer_kick(p);
}
-
- return 1;
}
static void
-krt_feed_end(struct proto *P)
+krt_feed_end(struct channel *C)
{
- struct krt_proto *p = (struct krt_proto *) P;
+ struct krt_proto *p = (void *) C->proto;
p->ready = 1;
krt_scan_timer_kick(p);
struct krt_config *krt_cf;
+static void
+krt_preconfig(struct protocol *P UNUSED, struct config *c)
+{
+ krt_cf = NULL;
+ krt_sys_preconfig(c);
+}
+
+static void
+krt_postconfig(struct proto_config *CF)
+{
+ struct krt_config *cf = (void *) CF;
+
+ if (EMPTY_LIST(CF->channels))
+ cf_error("Channel not specified");
+
+#ifdef CONFIG_ALL_TABLES_AT_ONCE
+ if (krt_cf->scan_time != cf->scan_time)
+ cf_error("All kernel syncers must use the same table scan interval");
+#endif
+
+ struct rtable_config *tab = proto_cf_main_channel(CF)->table;
+ if (tab->krt_attached)
+ cf_error("Kernel syncer (%s) already attached to table %s", tab->krt_attached->name, tab->name);
+ tab->krt_attached = CF;
+
+ krt_sys_postconfig(cf);
+}
+
static struct proto *
-krt_init(struct proto_config *C)
+krt_init(struct proto_config *CF)
{
- struct krt_proto *p = proto_new(C, sizeof(struct krt_proto));
- struct krt_config *c = (struct krt_config *) C;
+ struct krt_proto *p = proto_new(CF);
+ // struct krt_config *cf = (void *) CF;
+
+ p->p.main_channel = proto_add_channel(&p->p, proto_cf_main_channel(CF));
- p->p.accept_ra_types = c->merge_paths ? RA_MERGED : RA_OPTIMAL;
- p->p.merge_limit = c->merge_paths;
p->p.import_control = krt_import_control;
p->p.rt_notify = krt_rt_notify;
p->p.if_notify = krt_if_notify;
{
struct krt_proto *p = (struct krt_proto *) P;
- switch (p->p.table->addr_type)
+ switch (p->p.net_type)
{
case NET_IP4: p->af = AF_INET; break;
case NET_IP6: p->af = AF_INET6; break;
krt_scan_timer_start(p);
- if (P->gr_recovery && KRT_CF->graceful_restart)
- P->gr_wait = 1;
+ if (p->p.gr_recovery && KRT_CF->graceful_restart)
+ p->p.main_channel->gr_wait = 1;
return PS_UP;
}
}
static int
-krt_reconfigure(struct proto *p, struct proto_config *new)
+krt_reconfigure(struct proto *p, struct proto_config *CF)
{
- struct krt_config *o = (struct krt_config *) p->cf;
- struct krt_config *n = (struct krt_config *) new;
+ struct krt_config *o = (void *) p->cf;
+ struct krt_config *n = (void *) CF;
+
+ if (!proto_configure_channel(p, &p->main_channel, proto_cf_main_channel(CF)))
+ return 0;
if (!krt_sys_reconfigure((struct krt_proto *) p, n, o))
return 0;
/* persist, graceful restart need not be the same */
- return o->scan_time == n->scan_time && o->learn == n->learn &&
- o->devroutes == n->devroutes && o->merge_paths == n->merge_paths;
-}
-
-static void
-krt_preconfig(struct protocol *P UNUSED, struct config *c)
-{
- krt_cf = NULL;
- krt_sys_preconfig(c);
-}
-
-static void
-krt_postconfig(struct proto_config *C)
-{
- struct krt_config *c = (struct krt_config *) C;
-
-#ifdef CONFIG_ALL_TABLES_AT_ONCE
- if (krt_cf->scan_time != c->scan_time)
- cf_error("All kernel syncers must use the same table scan interval");
-#endif
-
- if (C->table->krt_attached)
- cf_error("Kernel syncer (%s) already attached to table %s", C->table->krt_attached->name, C->table->name);
- C->table->krt_attached = C;
- krt_sys_postconfig(c);
+ return o->scan_time == n->scan_time && o->learn == n->learn && o->devroutes == n->devroutes;
}
struct proto_config *
struct krt_config *d = (struct krt_config *) dest;
struct krt_config *s = (struct krt_config *) src;
- /* Shallow copy of everything */
- proto_copy_rest(dest, src, sizeof(struct krt_config));
-
/* Fix sysdep parts */
krt_sys_copy_config(d, s);
}
.template = "kernel%d",
.attr_class = EAP_KRT,
.preference = DEF_PREF_INHERITED,
+ .channel_mask = NB_IP,
+ .proto_size = sizeof(struct krt_proto),
.config_size = sizeof(struct krt_config),
.preconfig = krt_preconfig,
.postconfig = krt_postconfig,
int learn; /* Learn routes from other sources */
int devroutes; /* Allow export of device routes */
int graceful_restart; /* Regard graceful restart recovery */
- int merge_paths; /* Exported routes are merged for ECMP */
};
struct krt_proto {
projects / thirdparty / bird.git / commitdiff
