Lines Matching refs:br
46 if (br_opt_get(p->br, BROPT_MST_ENABLED)) {
49 br_warn(p->br, "error setting MST state on port %u(%s)\n",
54 br_warn(p->br, "error setting offload STP state on port %u(%s)\n",
57 br_info(p->br, "port %u(%s) entered %s state\n",
61 if (p->br->stp_enabled == BR_KERNEL_STP) {
88 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no)
92 list_for_each_entry_rcu(p, &br->port_list, list,
93 lockdep_is_held(&br->lock)) {
105 struct net_bridge *br;
109 br = p->br;
114 if (memcmp(&br->bridge_id, &p->designated_root, 8) <= 0)
120 rp = br_get_port(br, root_port);
152 static void br_root_port_block(const struct net_bridge *br,
156 br_notice(br, "port %u(%s) tried to become root port (blocked)",
162 if (br->forward_delay > 0)
163 mod_timer(&p->forward_delay_timer, jiffies + br->forward_delay);
167 static void br_root_selection(struct net_bridge *br)
172 list_for_each_entry(p, &br->port_list, list) {
177 br_root_port_block(br, p);
182 br->root_port = root_port;
185 br->designated_root = br->bridge_id;
186 br->root_path_cost = 0;
188 p = br_get_port(br, root_port);
189 br->designated_root = p->designated_root;
190 br->root_path_cost = p->designated_cost + p->path_cost;
195 void br_become_root_bridge(struct net_bridge *br)
197 br->max_age = br->bridge_max_age;
198 br->hello_time = br->bridge_hello_time;
199 br->forward_delay = br->bridge_forward_delay;
200 br_topology_change_detection(br);
201 del_timer(&br->tcn_timer);
203 if (br->dev->flags & IFF_UP) {
204 br_config_bpdu_generation(br);
205 mod_timer(&br->hello_timer, jiffies + br->hello_time);
213 struct net_bridge *br;
220 br = p->br;
222 bpdu.topology_change = br->topology_change;
224 bpdu.root = br->designated_root;
225 bpdu.root_path_cost = br->root_path_cost;
226 bpdu.bridge_id = br->bridge_id;
228 if (br_is_root_bridge(br))
232 = br_get_port(br, br->root_port);
236 bpdu.max_age = br->max_age;
237 bpdu.hello_time = br->hello_time;
238 bpdu.forward_delay = br->forward_delay;
240 if (bpdu.message_age < br->max_age) {
244 if (p->br->stp_enabled == BR_KERNEL_STP)
265 static void br_record_config_timeout_values(struct net_bridge *br,
268 br->max_age = bpdu->max_age;
269 br->hello_time = bpdu->hello_time;
270 br->forward_delay = bpdu->forward_delay;
271 __br_set_topology_change(br, bpdu->topology_change);
275 void br_transmit_tcn(struct net_bridge *br)
279 p = br_get_port(br, br->root_port);
283 br_notice(br, "root port %u not found for topology notice\n",
284 br->root_port);
290 struct net_bridge *br;
293 br = p->br;
297 if (memcmp(&p->designated_root, &br->designated_root, 8))
300 if (br->root_path_cost < p->designated_cost)
302 else if (br->root_path_cost > p->designated_cost)
305 t = memcmp(&br->bridge_id, &p->designated_bridge, 8);
318 static void br_designated_port_selection(struct net_bridge *br)
322 list_for_each_entry(p, &br->port_list, list) {
353 if (memcmp(&bpdu->bridge_id, &p->br->bridge_id, 8))
363 static void br_topology_change_acknowledged(struct net_bridge *br)
365 br->topology_change_detected = 0;
366 del_timer(&br->tcn_timer);
370 void br_topology_change_detection(struct net_bridge *br)
372 int isroot = br_is_root_bridge(br);
374 if (br->stp_enabled != BR_KERNEL_STP)
377 br_info(br, "topology change detected, %s\n",
381 __br_set_topology_change(br, 1);
382 mod_timer(&br->topology_change_timer, jiffies
383 + br->bridge_forward_delay + br->bridge_max_age);
384 } else if (!br->topology_change_detected) {
385 br_transmit_tcn(br);
386 mod_timer(&br->tcn_timer, jiffies + br->bridge_hello_time);
389 br->topology_change_detected = 1;
393 void br_config_bpdu_generation(struct net_bridge *br)
397 list_for_each_entry(p, &br->port_list, list) {
411 void br_configuration_update(struct net_bridge *br)
413 br_root_selection(br);
414 br_designated_port_selection(br);
420 struct net_bridge *br;
422 br = p->br;
423 p->designated_root = br->designated_root;
424 p->designated_cost = br->root_path_cost;
425 p->designated_bridge = br->bridge_id;
437 br_topology_change_detection(p->br);
449 struct net_bridge *br = p->br;
454 if (br->stp_enabled == BR_NO_STP || br->forward_delay == 0) {
456 br_topology_change_detection(br);
458 } else if (br->stp_enabled == BR_KERNEL_STP)
465 if (br->forward_delay != 0)
466 mod_timer(&p->forward_delay_timer, jiffies + br->forward_delay);
470 void br_port_state_selection(struct net_bridge *br)
475 list_for_each_entry(p, &br->port_list, list) {
480 if (br->stp_enabled != BR_USER_STP) {
481 if (p->port_no == br->root_port) {
506 netif_carrier_off(br->dev);
508 netif_carrier_on(br->dev);
522 struct net_bridge *br;
527 br = p->br;
528 was_root = br_is_root_bridge(br);
532 br_configuration_update(br);
533 br_port_state_selection(br);
535 if (!br_is_root_bridge(br) && was_root) {
536 del_timer(&br->hello_timer);
537 if (br->topology_change_detected) {
538 del_timer(&br->topology_change_timer);
539 br_transmit_tcn(br);
541 mod_timer(&br->tcn_timer,
542 jiffies + br->bridge_hello_time);
546 if (p->port_no == br->root_port) {
547 br_record_config_timeout_values(br, bpdu);
548 br_config_bpdu_generation(br);
550 br_topology_change_acknowledged(br);
563 br_info(p->br, "port %u(%s) received tcn bpdu\n",
566 br_topology_change_detection(p->br);
572 int br_set_hello_time(struct net_bridge *br, unsigned long val)
579 spin_lock_bh(&br->lock);
580 br->bridge_hello_time = t;
581 if (br_is_root_bridge(br))
582 br->hello_time = br->bridge_hello_time;
583 spin_unlock_bh(&br->lock);
587 int br_set_max_age(struct net_bridge *br, unsigned long val)
594 spin_lock_bh(&br->lock);
595 br->bridge_max_age = t;
596 if (br_is_root_bridge(br))
597 br->max_age = br->bridge_max_age;
598 spin_unlock_bh(&br->lock);
629 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time)
634 err = __set_ageing_time(br->dev, t);
638 spin_lock_bh(&br->lock);
639 br->bridge_ageing_time = t;
640 br->ageing_time = t;
641 spin_unlock_bh(&br->lock);
643 mod_delayed_work(system_long_wq, &br->gc_work, 0);
650 const struct net_bridge *br;
655 br = netdev_priv(br_dev);
657 return jiffies_to_clock_t(br->ageing_time);
662 void __br_set_topology_change(struct net_bridge *br, unsigned char val)
667 if (br->stp_enabled == BR_KERNEL_STP && br->topology_change != val) {
673 t = 2 * br->forward_delay;
674 br_debug(br, "decreasing ageing time to %lu\n", t);
676 t = br->bridge_ageing_time;
677 br_debug(br, "restoring ageing time to %lu\n", t);
680 err = __set_ageing_time(br->dev, t);
682 br_warn(br, "error offloading ageing time\n");
684 br->ageing_time = t;
687 br->topology_change = val;
690 void __br_set_forward_delay(struct net_bridge *br, unsigned long t)
692 br->bridge_forward_delay = t;
693 if (br_is_root_bridge(br))
694 br->forward_delay = br->bridge_forward_delay;
697 int br_set_forward_delay(struct net_bridge *br, unsigned long val)
702 spin_lock_bh(&br->lock);
703 if (br->stp_enabled != BR_NO_STP &&
707 __br_set_forward_delay(br, t);
711 spin_unlock_bh(&br->lock);