diff options
Diffstat (limited to 'nest/proto.c')
| -rw-r--r-- | nest/proto.c | 773 |
1 files changed, 447 insertions, 326 deletions
diff --git a/nest/proto.c b/nest/proto.c index 7074f73a..72e479d7 100644 --- a/nest/proto.c +++ b/nest/proto.c @@ -16,7 +16,7 @@ #include "lib/timer.h" #include "lib/string.h" #include "conf/conf.h" -#include "nest/route.h" +#include "nest/rt.h" #include "nest/iface.h" #include "nest/cli.h" #include "filter/filter.h" @@ -26,7 +26,6 @@ pool *proto_pool; list STATIC_LIST_INIT(proto_list); static list STATIC_LIST_INIT(protocol_list); -struct protocol *class_to_protocol[PROTOCOL__MAX]; #define CD(c, msg, args...) ({ if (c->debug & D_STATES) log(L_TRACE "%s.%s: " msg, c->proto->name, c->name ?: "?", ## args); }) #define PD(p, msg, args...) ({ if (p->debug & D_STATES) log(L_TRACE "%s: " msg, p->name, ## args); }) @@ -43,8 +42,7 @@ static int graceful_restart_state; static u32 graceful_restart_locks; static char *p_states[] = { "DOWN", "START", "UP", "STOP" }; -static char *c_states[] = { "DOWN", "START", "UP", "FLUSHING" }; -static char *e_states[] = { "DOWN", "FEEDING", "READY" }; +static char *c_states[] = { "DOWN", "START", "UP", "STOP", "RESTART" }; extern struct protocol proto_unix_iface; @@ -52,15 +50,17 @@ static void channel_request_reload(struct channel *c); static void proto_shutdown_loop(timer *); static void proto_rethink_goal(struct proto *p); static char *proto_state_name(struct proto *p); -static void channel_verify_limits(struct channel *c); -static inline void channel_reset_limit(struct channel_limit *l); - +static void channel_init_limit(struct channel *c, struct limit *l, int dir, struct channel_limit *cf); +static void channel_update_limit(struct channel *c, struct limit *l, int dir, struct channel_limit *cf); +static void channel_reset_limit(struct channel *c, struct limit *l, int dir); +static void channel_feed_end(struct channel *c); +static void channel_export_stopped(struct rt_export_request *req); static inline int proto_is_done(struct proto *p) { return (p->proto_state == PS_DOWN) && (p->active_channels == 0); } static inline int channel_is_active(struct channel *c) -{ return (c->channel_state == CS_START) || (c->channel_state == CS_UP); } +{ return (c->channel_state != CS_DOWN); } static inline int channel_reloadable(struct channel *c) { return c->proto->reload_routes && c->reloadable; } @@ -68,10 +68,46 @@ static inline int channel_reloadable(struct channel *c) static inline void channel_log_state_change(struct channel *c) { - if (c->export_state) - CD(c, "State changed to %s/%s", c_states[c->channel_state], e_states[c->export_state]); - else - CD(c, "State changed to %s", c_states[c->channel_state]); + CD(c, "State changed to %s", c_states[c->channel_state]); +} + +void +channel_import_log_state_change(struct rt_import_request *req, u8 state) +{ + struct channel *c = SKIP_BACK(struct channel, in_req, req); + CD(c, "Channel import state changed to %s", rt_import_state_name(state)); +} + +void +channel_export_log_state_change(struct rt_export_request *req, u8 state) +{ + struct channel *c = SKIP_BACK(struct channel, out_req, req); + CD(c, "Channel export state changed to %s", rt_export_state_name(state)); + + switch (state) + { + case TES_FEEDING: + if (c->proto->feed_begin) + c->proto->feed_begin(c, !c->refeeding); + break; + case TES_READY: + channel_feed_end(c); + break; + } +} + +static void +channel_dump_import_req(struct rt_import_request *req) +{ + struct channel *c = SKIP_BACK(struct channel, in_req, req); + debug(" Channel %s.%s import request %p\n", c->proto->name, c->name, req); +} + +static void +channel_dump_export_req(struct rt_export_request *req) +{ + struct channel *c = SKIP_BACK(struct channel, out_req, req); + debug(" Channel %s.%s export request %p\n", c->proto->name, c->name, req); } static void @@ -141,6 +177,15 @@ proto_find_channel_by_name(struct proto *p, const char *n) return NULL; } +int channel_preimport(struct rt_import_request *req, rte *new, rte *old); + +void rt_notify_optimal(struct rt_export_request *req, const net_addr *net, struct rt_pending_export *rpe); +void rt_notify_any(struct rt_export_request *req, const net_addr *net, struct rt_pending_export *rpe); +void rt_feed_any(struct rt_export_request *req, const net_addr *net, struct rt_pending_export *rpe, rte **feed, uint count); +void rt_notify_accepted(struct rt_export_request *req, const net_addr *net, struct rt_pending_export *rpe, rte **feed, uint count); +void rt_notify_merged(struct rt_export_request *req, const net_addr *net, struct rt_pending_export *rpe, rte **feed, uint count); + + /** * proto_add_channel - connect protocol to a routing table * @p: protocol instance @@ -165,23 +210,25 @@ proto_add_channel(struct proto *p, struct channel_config *cf) c->channel = cf->channel; c->proto = p; c->table = cf->table->table; + rt_lock_table(c->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->out_subprefix = cf->out_subprefix; + + channel_init_limit(c, &c->rx_limit, PLD_RX, &cf->rx_limit); + channel_init_limit(c, &c->in_limit, PLD_IN, &cf->in_limit); + channel_init_limit(c, &c->out_limit, PLD_OUT, &cf->out_limit); c->net_type = cf->net_type; c->ra_mode = cf->ra_mode; c->preference = cf->preference; c->debug = cf->debug; c->merge_limit = cf->merge_limit; - c->in_keep_filtered = cf->in_keep_filtered; + c->in_keep = cf->in_keep; c->rpki_reload = cf->rpki_reload; c->channel_state = CS_DOWN; - c->export_state = ES_DOWN; c->last_state_change = current_time(); c->reloadable = 1; @@ -203,6 +250,7 @@ proto_remove_channel(struct proto *p UNUSED, struct channel *c) CD(c, "Removed", c->name); + rt_unlock_table(c->table); rem_node(&c->n); mb_free(c); } @@ -223,7 +271,7 @@ proto_pause_channels(struct proto *p) struct channel *c; WALK_LIST(c, p->channels) if (!c->disabled && channel_is_active(c)) - channel_set_state(c, CS_START); + channel_set_state(c, CS_PAUSE); } static void @@ -232,7 +280,7 @@ 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); + channel_set_state(c, CS_STOP); } static void @@ -244,75 +292,10 @@ proto_remove_channels(struct proto *p) } static void -channel_schedule_feed(struct channel *c, int initial) -{ - // DBG("%s: Scheduling meal\n", p->name); - ASSERT(c->channel_state == CS_UP); - - c->export_state = ES_FEEDING; - c->refeeding = !initial; - - ev_schedule_work(c->feed_event); -} - -static void -channel_feed_loop(void *ptr) -{ - struct channel *c = ptr; - - if (c->export_state != ES_FEEDING) - return; - - /* Start feeding */ - if (!c->feed_active) - { - if (c->proto->feed_begin) - c->proto->feed_begin(c, !c->refeeding); - - c->refeed_pending = 0; - } - - // DBG("Feeding protocol %s continued\n", p->name); - if (!rt_feed_channel(c)) - { - ev_schedule_work(c->feed_event); - return; - } - - /* Reset export limit if the feed ended with acceptable number of exported routes */ - struct channel_limit *l = &c->out_limit; - if (c->refeeding && - (l->state == PLS_BLOCKED) && - (c->refeed_count <= l->limit) && - (c->stats.exp_routes <= l->limit)) - { - log(L_INFO "Protocol %s resets route export limit (%u)", c->proto->name, l->limit); - channel_reset_limit(&c->out_limit); - - /* Continue in feed - it will process routing table again from beginning */ - c->refeed_count = 0; - ev_schedule_work(c->feed_event); - return; - } - - // DBG("Feeding protocol %s finished\n", p->name); - c->export_state = ES_READY; - channel_log_state_change(c); - - if (c->proto->feed_end) - c->proto->feed_end(c); - - /* Restart feeding */ - if (c->refeed_pending) - channel_request_feeding(c); -} - - -static void channel_roa_in_changed(struct rt_subscription *s) { struct channel *c = s->data; - int active = c->reload_event && ev_active(c->reload_event); + int active = !!c->reload_req.hook; CD(c, "Reload triggered by RPKI change%s", active ? " - already active" : ""); @@ -326,14 +309,12 @@ static void channel_roa_out_changed(struct rt_subscription *s) { struct channel *c = s->data; - int active = (c->export_state == ES_FEEDING); + CD(c, "Feeding triggered by RPKI change"); - CD(c, "Feeding triggered by RPKI change%s", active ? " - already active" : ""); + c->refeed_pending = 1; - if (!active) - channel_request_feeding(c); - else - c->refeed_pending = 1; + if (c->out_req.hook) + rt_stop_export(&c->out_req, channel_export_stopped); } /* Temporary code, subscriptions should be changed to resources */ @@ -399,7 +380,7 @@ channel_roa_subscribe_filter(struct channel *c, int dir) #ifdef CONFIG_BGP /* No automatic reload for BGP channels without in_table / out_table */ if (c->channel == &channel_bgp) - valid = dir ? !!c->in_table : !!c->out_table; + valid = dir ? ((c->in_keep & RIK_PREFILTER) == RIK_PREFILTER) : !!c->out_table; #endif struct filter_iterator fit; @@ -409,14 +390,8 @@ channel_roa_subscribe_filter(struct channel *c, int dir) { switch (fi->fi_code) { - case FI_ROA_CHECK_IMPLICIT: - tab = fi->i_FI_ROA_CHECK_IMPLICIT.rtc->table; - if (valid) channel_roa_subscribe(c, tab, dir); - found = 1; - break; - - case FI_ROA_CHECK_EXPLICIT: - tab = fi->i_FI_ROA_CHECK_EXPLICIT.rtc->table; + case FI_ROA_CHECK: + tab = fi->i_FI_ROA_CHECK.rtc->table; if (valid) channel_roa_subscribe(c, tab, dir); found = 1; break; @@ -445,119 +420,237 @@ channel_roa_unsubscribe_all(struct channel *c) } static void -channel_start_export(struct channel *c) +channel_start_import(struct channel *c) { + if (c->in_req.hook) + { + log(L_WARN "%s.%s: Attempted to start channel's already started import", c->proto->name, c->name); + return; + } + + int nlen = strlen(c->name) + strlen(c->proto->name) + 2; + char *rn = mb_allocz(c->proto->pool, nlen); + bsprintf(rn, "%s.%s", c->proto->name, c->name); + + c->in_req = (struct rt_import_request) { + .name = rn, + .trace_routes = c->debug | c->proto->debug, + .dump_req = channel_dump_import_req, + .log_state_change = channel_import_log_state_change, + .preimport = channel_preimport, + }; + ASSERT(c->channel_state == CS_UP); - ASSERT(c->export_state == ES_DOWN); - channel_schedule_feed(c, 1); /* Sets ES_FEEDING */ + channel_reset_limit(c, &c->rx_limit, PLD_RX); + channel_reset_limit(c, &c->in_limit, PLD_IN); + + memset(&c->import_stats, 0, sizeof(struct channel_import_stats)); + + DBG("%s.%s: Channel start import req=%p\n", c->proto->name, c->name, &c->in_req); + rt_request_import(c->table, &c->in_req); } static void -channel_stop_export(struct channel *c) +channel_start_export(struct channel *c) { - /* Need to abort feeding */ - if (c->export_state == ES_FEEDING) - rt_feed_channel_abort(c); + if (c->out_req.hook) + { + log(L_WARN "%s.%s: Attempted to start channel's already started export", c->proto->name, c->name); + return; + } + + ASSERT(c->channel_state == CS_UP); + int nlen = strlen(c->name) + strlen(c->proto->name) + 2; + char *rn = mb_allocz(c->proto->pool, nlen); + bsprintf(rn, "%s.%s", c->proto->name, c->name); + + c->out_req = (struct rt_export_request) { + .name = rn, + .addr = c->out_subprefix, + .addr_mode = c->out_subprefix ? TE_ADDR_IN : TE_ADDR_NONE, + .trace_routes = c->debug | c->proto->debug, + .dump_req = channel_dump_export_req, + .log_state_change = channel_export_log_state_change, + }; + + bmap_init(&c->export_map, c->proto->pool, 1024); + bmap_init(&c->export_reject_map, c->proto->pool, 1024); + + channel_reset_limit(c, &c->out_limit, PLD_OUT); - c->export_state = ES_DOWN; - c->stats.exp_routes = 0; - bmap_reset(&c->export_map, 1024); + memset(&c->export_stats, 0, sizeof(struct channel_export_stats)); + + switch (c->ra_mode) { + case RA_OPTIMAL: + c->out_req.export_one = rt_notify_optimal; + break; + case RA_ANY: + c->out_req.export_one = rt_notify_any; + c->out_req.export_bulk = rt_feed_any; + break; + case RA_ACCEPTED: + c->out_req.export_bulk = rt_notify_accepted; + break; + case RA_MERGED: + c->out_req.export_bulk = rt_notify_merged; + break; + default: + bug("Unknown route announcement mode"); + } + + DBG("%s.%s: Channel start export req=%p\n", c->proto->name, c->name, &c->out_req); + rt_request_export(&c->table->exporter, &c->out_req); } +static void +channel_check_stopped(struct channel *c) +{ + switch (c->channel_state) + { + case CS_STOP: + if (c->out_req.hook || c->in_req.hook) + return; + + channel_set_state(c, CS_DOWN); + ev_schedule(c->proto->event); + + break; + case CS_PAUSE: + if (c->out_req.hook) + return; + + channel_set_state(c, CS_START); + break; + default: + bug("Stopped channel in a bad state: %d", c->channel_state); + } + + DBG("%s.%s: Channel requests/hooks stopped (in state %s)\n", c->proto->name, c->name, c_states[c->channel_state]); +} -/* Called by protocol for reload from in_table */ void -channel_schedule_reload(struct channel *c) +channel_import_stopped(struct rt_import_request *req) { - ASSERT(c->channel_state == CS_UP); + struct channel *c = SKIP_BACK(struct channel, in_req, req); + + req->hook = NULL; + + mb_free(c->in_req.name); + c->in_req.name = NULL; - rt_reload_channel_abort(c); - ev_schedule_work(c->reload_event); + channel_check_stopped(c); } static void -channel_reload_loop(void *ptr) +channel_export_stopped(struct rt_export_request *req) { - struct channel *c = ptr; + struct channel *c = SKIP_BACK(struct channel, out_req, req); - /* Start reload */ - if (!c->reload_active) - c->reload_pending = 0; + /* The hook has already stopped */ + req->hook = NULL; - if (!rt_reload_channel(c)) + if (c->refeed_pending) { - ev_schedule_work(c->reload_event); + c->refeeding = 1; + c->refeed_pending = 0; + rt_request_export(&c->table->exporter, req); return; } - /* Restart reload */ - if (c->reload_pending) - channel_request_reload(c); + mb_free(c->out_req.name); + c->out_req.name = NULL; + + channel_check_stopped(c); } static void -channel_reset_import(struct channel *c) +channel_feed_end(struct channel *c) { - /* Need to abort feeding */ - ev_postpone(c->reload_event); - rt_reload_channel_abort(c); + struct rt_export_request *req = &c->out_req; - rt_prune_sync(c->in_table, 1); + /* Reset export limit if the feed ended with acceptable number of exported routes */ + struct limit *l = &c->out_limit; + if (c->refeeding && + (c->limit_active & (1 << PLD_OUT)) && + (c->refeed_count <= l->max) && + (l->count <= l->max)) + { + log(L_INFO "Protocol %s resets route export limit (%u)", c->proto->name, l->max); + + c->refeed_pending = 1; + rt_stop_export(req, channel_export_stopped); + return; + } + + if (c->proto->feed_end) + c->proto->feed_end(c); + + if (c->refeed_pending) + rt_stop_export(req, channel_export_stopped); + else + c->refeeding = 0; } -static void -channel_reset_export(struct channel *c) +/* Called by protocol for reload from in_table */ +void +channel_schedule_reload(struct channel *c) { - /* Just free the routes */ - rt_prune_sync(c->out_table, 1); + ASSERT(c->in_req.hook); + + rt_request_export(&c->table->exporter, &c->reload_req); } -/* Called by protocol to activate in_table */ -void -channel_setup_in_table(struct channel *c) +static void +channel_reload_stopped(struct rt_export_request *req) { - struct rtable_config *cf = mb_allocz(c->proto->pool, sizeof(struct rtable_config)); + struct channel *c = SKIP_BACK(struct channel, reload_req, req); - cf->name = "import"; - cf->addr_type = c->net_type; - cf->internal = 1; + /* Restart reload */ + if (c->reload_pending) + channel_request_reload(c); +} - c->in_table = rt_setup(c->proto->pool, cf); +static void +channel_reload_log_state_change(struct rt_export_request *req, u8 state) +{ + if (state == TES_READY) + rt_stop_export(req, channel_reload_stopped); +} - c->reload_event = ev_new_init(c->proto->pool, channel_reload_loop, c); +static void +channel_reload_dump_req(struct rt_export_request *req) +{ + struct channel *c = SKIP_BACK(struct channel, reload_req, req); + debug(" Channel %s.%s import reload request %p\n", c->proto->name, c->name, req); } -/* Called by protocol to activate out_table */ +void channel_reload_export_bulk(struct rt_export_request *req, const net_addr *net, struct rt_pending_export *rpe, rte **feed, uint count); + +/* Called by protocol to activate in_table */ void -channel_setup_out_table(struct channel *c) +channel_setup_in_table(struct channel *c) { - struct rtable_config *cf = mb_allocz(c->proto->pool, sizeof(struct rtable_config)); - cf->name = "export"; - cf->addr_type = c->net_type; - cf->internal = 1; + c->reload_req = (struct rt_export_request) { + .name = mb_sprintf(c->proto->pool, "%s.%s.import", c->proto->name, c->name), + .trace_routes = c->debug | c->proto->debug, + .export_bulk = channel_reload_export_bulk, + .dump_req = channel_reload_dump_req, + .log_state_change = channel_reload_log_state_change, + }; - c->out_table = rt_setup(c->proto->pool, cf); + c->in_keep |= RIK_PREFILTER; } 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_init(c->proto->pool, channel_feed_loop, c); - - bmap_init(&c->export_map, c->proto->pool, 1024); - memset(&c->stats, 0, sizeof(struct proto_stats)); - - channel_reset_limit(&c->rx_limit); - channel_reset_limit(&c->in_limit); - channel_reset_limit(&c->out_limit); - CALL(c->channel->start, c); + + channel_start_import(c); } static void @@ -572,9 +665,31 @@ channel_do_up(struct channel *c) } static void -channel_do_flush(struct channel *c) +channel_do_pause(struct channel *c) +{ + /* Need to abort feeding */ + if (c->reload_req.hook) + { + c->reload_pending = 0; + rt_stop_export(&c->reload_req, channel_reload_stopped); + } + + /* Stop export */ + if (c->out_req.hook) + rt_stop_export(&c->out_req, channel_export_stopped); + + channel_roa_unsubscribe_all(c); + + bmap_free(&c->export_map); + bmap_free(&c->export_reject_map); +} + +static void +channel_do_stop(struct channel *c) { - rt_schedule_prune(c->table); + /* Stop import */ + if (c->in_req.hook) + rt_stop_import(&c->in_req, channel_import_stopped); c->gr_wait = 0; if (c->gr_lock) @@ -583,31 +698,20 @@ channel_do_flush(struct channel *c) CALL(c->channel->shutdown, c); /* This have to be done in here, as channel pool is freed before channel_do_down() */ - bmap_free(&c->export_map); - c->in_table = NULL; - c->reload_event = NULL; c->out_table = NULL; - - channel_roa_unsubscribe_all(c); } static void channel_do_down(struct channel *c) { - ASSERT(!c->feed_active && !c->reload_active); + ASSERT(!c->reload_req.hook); - rem_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); - // bmap_free(&c->export_map); - memset(&c->stats, 0, sizeof(struct proto_stats)); + memset(&c->import_stats, 0, sizeof(struct channel_import_stats)); + memset(&c->export_stats, 0, sizeof(struct channel_export_stats)); - c->in_table = NULL; - c->reload_event = NULL; c->out_table = NULL; /* The in_table and out_table are going to be freed by freeing their resource pools. */ @@ -623,7 +727,6 @@ void channel_set_state(struct channel *c, uint state) { uint cs = c->channel_state; - uint es = c->export_state; DBG("%s reporting channel %s state transition %s -> %s\n", c->proto->name, c->name, c_states[cs], c_states[state]); if (state == cs) @@ -635,20 +738,11 @@ channel_set_state(struct channel *c, uint state) switch (state) { case CS_START: - ASSERT(cs == CS_DOWN || cs == CS_UP); + ASSERT(cs == CS_DOWN || cs == CS_PAUSE); if (cs == CS_DOWN) channel_do_start(c); - if (es != ES_DOWN) - channel_stop_export(c); - - if (c->in_table && (cs == CS_UP)) - channel_reset_import(c); - - if (c->out_table && (cs == CS_UP)) - channel_reset_export(c); - break; case CS_UP: @@ -663,23 +757,24 @@ channel_set_state(struct channel *c, uint state) channel_do_up(c); break; - case CS_FLUSHING: - ASSERT(cs == CS_START || cs == CS_UP); + case CS_PAUSE: + ASSERT(cs == CS_UP); - if (es != ES_DOWN) - channel_stop_export(c); + if (cs == CS_UP) + channel_do_pause(c); + break; - if (c->in_table && (cs == CS_UP)) - channel_reset_import(c); + case CS_STOP: + ASSERT(cs == CS_UP || cs == CS_START || cs == CS_PAUSE); - if (c->out_table && (cs == CS_UP)) - channel_reset_export(c); + if (cs == CS_UP) + channel_do_pause(c); - channel_do_flush(c); + channel_do_stop(c); break; case CS_DOWN: - ASSERT(cs == CS_FLUSHING); + ASSERT(cs == CS_STOP); channel_do_down(c); break; @@ -704,35 +799,16 @@ channel_set_state(struct channel *c, uint state) void channel_request_feeding(struct channel *c) { - ASSERT(c->channel_state == CS_UP); - - CD(c, "Feeding requested"); - - /* Do nothing if we are still waiting for feeding */ - if (c->export_state == ES_DOWN) - return; - - /* 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; + ASSERT(c->out_req.hook); - rt_feed_channel_abort(c); - } - - /* Track number of exported routes during refeed */ - c->refeed_count = 0; - - channel_schedule_feed(c, 0); /* Sets ES_FEEDING */ - channel_log_state_change(c); + c->refeed_pending = 1; + rt_stop_export(&c->out_req, channel_export_stopped); } static void channel_request_reload(struct channel *c) { - ASSERT(c->channel_state == CS_UP); + ASSERT(c->in_req.hook); ASSERT(channel_reloadable(c)); CD(c, "Reload requested"); @@ -743,8 +819,8 @@ channel_request_reload(struct channel *c) * 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); + channel_reset_limit(c, &c->rx_limit, PLD_RX); + channel_reset_limit(c, &c->in_limit, PLD_IN); } const struct channel_class channel_basic = { @@ -830,7 +906,12 @@ 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) || (cf->ra_mode && (c->ra_mode != cf->ra_mode))) + if ((c->table != cf->table->table) || + (cf->ra_mode && (c->ra_mode != cf->ra_mode)) || + (cf->in_keep != c->in_keep) || + cf->out_subprefix && c->out_subprefix && + !net_equal(cf->out_subprefix, c->out_subprefix) || + (!cf->out_subprefix != !c->out_subprefix)) return 0; /* Note that filter_same() requires arguments in (new, old) order */ @@ -847,19 +928,19 @@ channel_reconfigure(struct channel *c, struct channel_config *cf) /* 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; + + channel_update_limit(c, &c->rx_limit, PLD_RX, &cf->rx_limit); + channel_update_limit(c, &c->in_limit, PLD_IN, &cf->in_limit); + channel_update_limit(c, &c->out_limit, PLD_OUT, &cf->out_limit); // c->ra_mode = cf->ra_mode; c->merge_limit = cf->merge_limit; c->preference = cf->preference; + c->out_req.addr = c->out_subprefix = cf->out_subprefix; c->debug = cf->debug; - c->in_keep_filtered = cf->in_keep_filtered; + c->in_req.trace_routes = c->out_req.trace_routes = c->debug | c->proto->debug; c->rpki_reload = cf->rpki_reload; - channel_verify_limits(c); - /* Execute channel-specific reconfigure hook */ if (c->channel->reconfigure && !c->channel->reconfigure(c, cf, &import_changed, &export_changed)) return 0; @@ -971,8 +1052,8 @@ proto_event(void *ptr) if (proto_is_done(p)) { - if (p->proto->cleanup) - p->proto->cleanup(p); + rfree(p->pool); + p->pool = NULL; p->active = 0; proto_log_state_change(p); @@ -1524,7 +1605,7 @@ graceful_restart_done(timer *t UNUSED) WALK_LIST(c, p->channels) { /* Resume postponed export of routes */ - if ((c->channel_state == CS_UP) && c->gr_wait && c->proto->rt_notify) + if ((c->channel_state == CS_UP) && c->gr_wait && p->rt_notify) channel_start_export(c); /* Cleanup */ @@ -1614,7 +1695,11 @@ protos_dump_all(void) struct proto *p; WALK_LIST(p, proto_list) { - debug(" protocol %s state %s\n", p->name, p_states[p->proto_state]); +#define DPF(x) (p->x ? " " #x : "") + debug(" protocol %s (%p) state %s with %d active channels flags: %s%s%s%s%s\n", + p->name, p, p_states[p->proto_state], p->active_channels, + DPF(disabled), DPF(active), DPF(do_start), DPF(do_stop), DPF(reconfiguring)); +#undef DPF struct channel *c; WALK_LIST(c, p->channels) @@ -1624,6 +1709,9 @@ protos_dump_all(void) debug("\tInput filter: %s\n", filter_name(c->in_filter)); if (c->out_filter) debug("\tOutput filter: %s\n", filter_name(c->out_filter)); + debug("\tChannel state: %s/%s/%s\n", c_states[c->channel_state], + c->in_req.hook ? rt_import_state_name(rt_import_get_state(c->in_req.hook)) : "-", + c->out_req.hook ? rt_export_state_name(rt_export_get_state(c->out_req.hook)) : "-"); } if (p->proto->dump && (p->proto_state != PS_DOWN)) @@ -1643,9 +1731,6 @@ void proto_build(struct protocol *p) { add_tail(&protocol_list, &p->n); - ASSERT(p->class); - ASSERT(!class_to_protocol[p->class]); - class_to_protocol[p->class] = p; } /* FIXME: convert this call to some protocol hook */ @@ -1745,88 +1830,104 @@ proto_set_message(struct proto *p, char *msg, int len) } -static const char * -channel_limit_name(struct channel_limit *l) -{ - const char *actions[] = { - [PLA_WARN] = "warn", - [PLA_BLOCK] = "block", - [PLA_RESTART] = "restart", - [PLA_DISABLE] = "disable", - }; +static const char * channel_limit_name[] = { + [PLA_WARN] = "warn", + [PLA_BLOCK] = "block", + [PLA_RESTART] = "restart", + [PLA_DISABLE] = "disable", +}; - return actions[l->action]; -} -/** - * 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 - * - * 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 -channel_notify_limit(struct channel *c, struct channel_limit *l, int dir, u32 rt_count) +static void +channel_log_limit(struct channel *c, struct limit *l, int dir) { 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 = c->proto; + log(L_WARN "Channel %s.%s hits route %s limit (%d), action: %s", + c->proto->name, c->name, dir_name[dir], l->max, channel_limit_name[c->limit_actions[dir]]); +} - if (l->state == PLS_BLOCKED) +static void +channel_activate_limit(struct channel *c, struct limit *l, int dir) +{ + if (c->limit_active & (1 << dir)) 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, channel_limit_name(l)); + c->limit_active |= (1 << dir); + channel_log_limit(c, l, dir); +} - switch (l->action) - { - case PLA_WARN: - l->state = PLS_ACTIVE; - break; +static int +channel_limit_warn(struct limit *l, void *data) +{ + struct channel_limit_data *cld = data; + struct channel *c = cld->c; + int dir = cld->dir; - case PLA_BLOCK: - l->state = PLS_BLOCKED; - break; + channel_log_limit(c, l, dir); - 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; - } + return 0; } -static void -channel_verify_limits(struct channel *c) +static int +channel_limit_block(struct limit *l, void *data) +{ + struct channel_limit_data *cld = data; + struct channel *c = cld->c; + int dir = cld->dir; + + channel_activate_limit(c, l, dir); + + return 1; +} + +static const byte chl_dir_down[PLD_MAX] = { PDC_RX_LIMIT_HIT, PDC_IN_LIMIT_HIT, PDC_OUT_LIMIT_HIT }; + +static int +channel_limit_down(struct limit *l, void *data) { - struct channel_limit *l; - u32 all_routes = c->stats.imp_routes + c->stats.filt_routes; + struct channel_limit_data *cld = data; + struct channel *c = cld->c; + struct proto *p = c->proto; + int dir = cld->dir; - l = &c->rx_limit; - if (l->action && (all_routes > l->limit)) - channel_notify_limit(c, l, PLD_RX, all_routes); + channel_activate_limit(c, l, dir); - l = &c->in_limit; - if (l->action && (c->stats.imp_routes > l->limit)) - channel_notify_limit(c, l, PLD_IN, c->stats.imp_routes); + if (p->proto_state == PS_UP) + proto_schedule_down(p, c->limit_actions[dir] == PLA_RESTART, chl_dir_down[dir]); - l = &c->out_limit; - if (l->action && (c->stats.exp_routes > l->limit)) - channel_notify_limit(c, l, PLD_OUT, c->stats.exp_routes); + return 1; } -static inline void -channel_reset_limit(struct channel_limit *l) +static int (*channel_limit_action[])(struct limit *, void *) = { + [PLA_NONE] = NULL, + [PLA_WARN] = channel_limit_warn, + [PLA_BLOCK] = channel_limit_block, + [PLA_RESTART] = channel_limit_down, + [PLA_DISABLE] = channel_limit_down, +}; + +static void +channel_update_limit(struct channel *c, struct limit *l, int dir, struct channel_limit *cf) +{ + l->action = channel_limit_action[cf->action]; + c->limit_actions[dir] = cf->action; + + struct channel_limit_data cld = { .c = c, .dir = dir }; + limit_update(l, &cld, cf->action ? cf->limit : ~((u32) 0)); +} + +static void +channel_init_limit(struct channel *c, struct limit *l, int dir, struct channel_limit *cf) +{ + channel_reset_limit(c, l, dir); + channel_update_limit(c, l, dir, cf); +} + +static void +channel_reset_limit(struct channel *c, struct limit *l, int dir) { - if (l->action) - l->state = PLS_INITIAL; + limit_reset(l); + c->limit_active &= ~(1 << dir); } static inline void @@ -1878,8 +1979,6 @@ 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)) @@ -1974,38 +2073,58 @@ proto_state_name(struct proto *p) static void channel_show_stats(struct channel *c) { - struct proto_stats *s = &c->stats; + struct channel_import_stats *ch_is = &c->import_stats; + struct channel_export_stats *ch_es = &c->export_stats; + struct rt_import_stats *rt_is = c->in_req.hook ? &c->in_req.hook->stats : NULL; + struct rt_export_stats *rt_es = c->out_req.hook ? &c->out_req.hook->stats : NULL; + +#define SON(ie, item) ((ie) ? (ie)->item : 0) +#define SCI(item) SON(ch_is, item) +#define SCE(item) SON(ch_es, item) +#define SRI(item) SON(rt_is, item) +#define SRE(item) SON(rt_es, item) + + u32 rx_routes = c->rx_limit.count; + u32 in_routes = c->in_limit.count; + u32 out_routes = c->out_limit.count; - if (c->in_keep_filtered) + if (c->in_keep) cli_msg(-1006, " Routes: %u imported, %u filtered, %u exported, %u preferred", - s->imp_routes, s->filt_routes, s->exp_routes, s->pref_routes); + in_routes, (rx_routes - in_routes), out_routes, SRI(pref)); else cli_msg(-1006, " Routes: %u imported, %u exported, %u preferred", - s->imp_routes, s->exp_routes, s->pref_routes); - - 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", - 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", - s->exp_updates_received, s->exp_updates_rejected, - s->exp_updates_filtered, s->exp_updates_accepted); - cli_msg(-1006, " Export withdraws: %10u --- --- --- %10u", - s->exp_withdraws_received, s->exp_withdraws_accepted); + in_routes, out_routes, SRI(pref)); + + cli_msg(-1006, " Route change stats: received rejected filtered ignored RX limit IN limit accepted"); + cli_msg(-1006, " Import updates: %10u %10u %10u %10u %10u %10u %10u", + SCI(updates_received), SCI(updates_invalid), + SCI(updates_filtered), SRI(updates_ignored), + SCI(updates_limited_rx), SCI(updates_limited_in), + SRI(updates_accepted)); + cli_msg(-1006, " Import withdraws: %10u %10u --- %10u --- %10u", + SCI(withdraws_received), SCI(withdraws_invalid), + SRI(withdraws_ignored), SRI(withdraws_accepted)); + cli_msg(-1006, " Export updates: %10u %10u %10u --- %10u %10u", + SRE(updates_received), SCE(updates_rejected), + SCE(updates_filtered), SCE(updates_limited), SCE(updates_accepted)); + cli_msg(-1006, " Export withdraws: %10u --- --- --- ---%10u", + SRE(withdraws_received), SCE(withdraws_accepted)); + +#undef SRI +#undef SRE +#undef SCI +#undef SCE +#undef SON } void -channel_show_limit(struct channel_limit *l, const char *dsc) +channel_show_limit(struct limit *l, const char *dsc, int active, int action) { if (!l->action) return; - cli_msg(-1006, " %-16s%d%s", dsc, l->limit, l->state ? " [HIT]" : ""); - cli_msg(-1006, " Action: %s", channel_limit_name(l)); + cli_msg(-1006, " %-16s%d%s", dsc, l->max, active ? " [HIT]" : ""); + cli_msg(-1006, " Action: %s", channel_limit_name[action]); } void @@ -2013,6 +2132,8 @@ channel_show_info(struct channel *c) { cli_msg(-1006, " Channel %s", c->name); cli_msg(-1006, " State: %s", c_states[c->channel_state]); + cli_msg(-1006, " Import state: %s", rt_import_state_name(rt_import_get_state(c->in_req.hook))); + cli_msg(-1006, " Export state: %s", rt_export_state_name(rt_export_get_state(c->out_req.hook))); 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)); @@ -2023,9 +2144,9 @@ channel_show_info(struct channel *c) c->gr_lock ? " pending" : "", c->gr_wait ? " waiting" : ""); - channel_show_limit(&c->rx_limit, "Receive limit:"); - channel_show_limit(&c->in_limit, "Import limit:"); - channel_show_limit(&c->out_limit, "Export limit:"); + channel_show_limit(&c->rx_limit, "Receive limit:", c->limit_active & (1 << PLD_RX), c->limit_actions[PLD_RX]); + channel_show_limit(&c->in_limit, "Import limit:", c->limit_active & (1 << PLD_IN), c->limit_actions[PLD_IN]); + channel_show_limit(&c->out_limit, "Export limit:", c->limit_active & (1 << PLD_OUT), c->limit_actions[PLD_OUT]); if (c->channel_state != CS_DOWN) channel_show_stats(c); |