1
2
3
4
5
6#include <linux/skbuff.h>
7#include <linux/if_ether.h>
8#include <linux/netdevice.h>
9#include <linux/spinlock.h>
10#include <linux/ethtool.h>
11#include <linux/etherdevice.h>
12#include <linux/if_bonding.h>
13#include <linux/pkt_sched.h>
14#include <net/net_namespace.h>
15#include <net/bonding.h>
16#include <net/bond_3ad.h>
17#include <net/netlink.h>
18
19
20#define AD_SHORT_TIMEOUT 1
21#define AD_LONG_TIMEOUT 0
22#define AD_STANDBY 0x2
23#define AD_MAX_TX_IN_SECOND 3
24#define AD_COLLECTOR_MAX_DELAY 0
25
26
27#define AD_FAST_PERIODIC_TIME 1
28#define AD_SLOW_PERIODIC_TIME 30
29#define AD_SHORT_TIMEOUT_TIME (3*AD_FAST_PERIODIC_TIME)
30#define AD_LONG_TIMEOUT_TIME (3*AD_SLOW_PERIODIC_TIME)
31#define AD_CHURN_DETECTION_TIME 60
32#define AD_AGGREGATE_WAIT_TIME 2
33
34
35
36
37#define AD_PORT_BEGIN 0x1
38#define AD_PORT_LACP_ENABLED 0x2
39#define AD_PORT_ACTOR_CHURN 0x4
40#define AD_PORT_PARTNER_CHURN 0x8
41#define AD_PORT_READY 0x10
42#define AD_PORT_READY_N 0x20
43#define AD_PORT_MATCHED 0x40
44#define AD_PORT_STANDBY 0x80
45#define AD_PORT_SELECTED 0x100
46#define AD_PORT_MOVED 0x200
47#define AD_PORT_CHURNED (AD_PORT_ACTOR_CHURN | AD_PORT_PARTNER_CHURN)
48
49
50
51
52
53
54
55
56
57#define AD_DUPLEX_KEY_MASKS 0x1
58#define AD_SPEED_KEY_MASKS 0x3E
59#define AD_USER_KEY_MASKS 0xFFC0
60
61enum ad_link_speed_type {
62 AD_LINK_SPEED_1MBPS = 1,
63 AD_LINK_SPEED_10MBPS,
64 AD_LINK_SPEED_100MBPS,
65 AD_LINK_SPEED_1000MBPS,
66 AD_LINK_SPEED_2500MBPS,
67 AD_LINK_SPEED_5000MBPS,
68 AD_LINK_SPEED_10000MBPS,
69 AD_LINK_SPEED_14000MBPS,
70 AD_LINK_SPEED_20000MBPS,
71 AD_LINK_SPEED_25000MBPS,
72 AD_LINK_SPEED_40000MBPS,
73 AD_LINK_SPEED_50000MBPS,
74 AD_LINK_SPEED_56000MBPS,
75 AD_LINK_SPEED_100000MBPS,
76 AD_LINK_SPEED_200000MBPS,
77 AD_LINK_SPEED_400000MBPS,
78};
79
80
81#define MAC_ADDRESS_EQUAL(A, B) \
82 ether_addr_equal_64bits((const u8 *)A, (const u8 *)B)
83
84static const u8 null_mac_addr[ETH_ALEN + 2] __long_aligned = {
85 0, 0, 0, 0, 0, 0
86};
87static u16 ad_ticks_per_sec;
88static const int ad_delta_in_ticks = (AD_TIMER_INTERVAL * HZ) / 1000;
89
90static const u8 lacpdu_mcast_addr[ETH_ALEN + 2] __long_aligned =
91 MULTICAST_LACPDU_ADDR;
92
93
94static int ad_lacpdu_send(struct port *port);
95static int ad_marker_send(struct port *port, struct bond_marker *marker);
96static void ad_mux_machine(struct port *port, bool *update_slave_arr);
97static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port);
98static void ad_tx_machine(struct port *port);
99static void ad_periodic_machine(struct port *port, struct bond_params *bond_params);
100static void ad_port_selection_logic(struct port *port, bool *update_slave_arr);
101static void ad_agg_selection_logic(struct aggregator *aggregator,
102 bool *update_slave_arr);
103static void ad_clear_agg(struct aggregator *aggregator);
104static void ad_initialize_agg(struct aggregator *aggregator);
105static void ad_initialize_port(struct port *port, int lacp_fast);
106static void ad_enable_collecting_distributing(struct port *port,
107 bool *update_slave_arr);
108static void ad_disable_collecting_distributing(struct port *port,
109 bool *update_slave_arr);
110static void ad_marker_info_received(struct bond_marker *marker_info,
111 struct port *port);
112static void ad_marker_response_received(struct bond_marker *marker,
113 struct port *port);
114static void ad_update_actor_keys(struct port *port, bool reset);
115
116
117
118
119
120
121
122
123
124
125static inline struct bonding *__get_bond_by_port(struct port *port)
126{
127 if (port->slave == NULL)
128 return NULL;
129
130 return bond_get_bond_by_slave(port->slave);
131}
132
133
134
135
136
137
138
139
140
141static inline struct aggregator *__get_first_agg(struct port *port)
142{
143 struct bonding *bond = __get_bond_by_port(port);
144 struct slave *first_slave;
145 struct aggregator *agg;
146
147
148 if (bond == NULL)
149 return NULL;
150
151 rcu_read_lock();
152 first_slave = bond_first_slave_rcu(bond);
153 agg = first_slave ? &(SLAVE_AD_INFO(first_slave)->aggregator) : NULL;
154 rcu_read_unlock();
155
156 return agg;
157}
158
159
160
161
162
163
164
165
166static inline int __agg_has_partner(struct aggregator *agg)
167{
168 return !is_zero_ether_addr(agg->partner_system.mac_addr_value);
169}
170
171
172
173
174
175static inline void __disable_port(struct port *port)
176{
177 bond_set_slave_inactive_flags(port->slave, BOND_SLAVE_NOTIFY_LATER);
178}
179
180
181
182
183
184static inline void __enable_port(struct port *port)
185{
186 struct slave *slave = port->slave;
187
188 if ((slave->link == BOND_LINK_UP) && bond_slave_is_up(slave))
189 bond_set_slave_active_flags(slave, BOND_SLAVE_NOTIFY_LATER);
190}
191
192
193
194
195
196static inline int __port_is_enabled(struct port *port)
197{
198 return bond_is_active_slave(port->slave);
199}
200
201
202
203
204
205
206
207static inline u32 __get_agg_selection_mode(struct port *port)
208{
209 struct bonding *bond = __get_bond_by_port(port);
210
211 if (bond == NULL)
212 return BOND_AD_STABLE;
213
214 return bond->params.ad_select;
215}
216
217
218
219
220
221static inline int __check_agg_selection_timer(struct port *port)
222{
223 struct bonding *bond = __get_bond_by_port(port);
224
225 if (bond == NULL)
226 return 0;
227
228 return BOND_AD_INFO(bond).agg_select_timer ? 1 : 0;
229}
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253static u16 __get_link_speed(struct port *port)
254{
255 struct slave *slave = port->slave;
256 u16 speed;
257
258
259
260
261
262
263 if (slave->link != BOND_LINK_UP)
264 speed = 0;
265 else {
266 switch (slave->speed) {
267 case SPEED_10:
268 speed = AD_LINK_SPEED_10MBPS;
269 break;
270
271 case SPEED_100:
272 speed = AD_LINK_SPEED_100MBPS;
273 break;
274
275 case SPEED_1000:
276 speed = AD_LINK_SPEED_1000MBPS;
277 break;
278
279 case SPEED_2500:
280 speed = AD_LINK_SPEED_2500MBPS;
281 break;
282
283 case SPEED_5000:
284 speed = AD_LINK_SPEED_5000MBPS;
285 break;
286
287 case SPEED_10000:
288 speed = AD_LINK_SPEED_10000MBPS;
289 break;
290
291 case SPEED_14000:
292 speed = AD_LINK_SPEED_14000MBPS;
293 break;
294
295 case SPEED_20000:
296 speed = AD_LINK_SPEED_20000MBPS;
297 break;
298
299 case SPEED_25000:
300 speed = AD_LINK_SPEED_25000MBPS;
301 break;
302
303 case SPEED_40000:
304 speed = AD_LINK_SPEED_40000MBPS;
305 break;
306
307 case SPEED_50000:
308 speed = AD_LINK_SPEED_50000MBPS;
309 break;
310
311 case SPEED_56000:
312 speed = AD_LINK_SPEED_56000MBPS;
313 break;
314
315 case SPEED_100000:
316 speed = AD_LINK_SPEED_100000MBPS;
317 break;
318
319 case SPEED_200000:
320 speed = AD_LINK_SPEED_200000MBPS;
321 break;
322
323 case SPEED_400000:
324 speed = AD_LINK_SPEED_400000MBPS;
325 break;
326
327 default:
328
329 if (slave->speed != SPEED_UNKNOWN)
330 pr_err_once("%s: (slave %s): unknown ethtool speed (%d) for port %d (set it to 0)\n",
331 slave->bond->dev->name,
332 slave->dev->name, slave->speed,
333 port->actor_port_number);
334 speed = 0;
335 break;
336 }
337 }
338
339 slave_dbg(slave->bond->dev, slave->dev, "Port %d Received link speed %d update from adapter\n",
340 port->actor_port_number, speed);
341 return speed;
342}
343
344
345
346
347
348
349
350
351
352static u8 __get_duplex(struct port *port)
353{
354 struct slave *slave = port->slave;
355 u8 retval = 0x0;
356
357
358
359
360 if (slave->link == BOND_LINK_UP) {
361 switch (slave->duplex) {
362 case DUPLEX_FULL:
363 retval = 0x1;
364 slave_dbg(slave->bond->dev, slave->dev, "Port %d Received status full duplex update from adapter\n",
365 port->actor_port_number);
366 break;
367 case DUPLEX_HALF:
368 default:
369 retval = 0x0;
370 slave_dbg(slave->bond->dev, slave->dev, "Port %d Received status NOT full duplex update from adapter\n",
371 port->actor_port_number);
372 break;
373 }
374 }
375 return retval;
376}
377
378static void __ad_actor_update_port(struct port *port)
379{
380 const struct bonding *bond = bond_get_bond_by_slave(port->slave);
381
382 port->actor_system = BOND_AD_INFO(bond).system.sys_mac_addr;
383 port->actor_system_priority = BOND_AD_INFO(bond).system.sys_priority;
384}
385
386
387
388
389
390
391
392
393
394
395
396
397static u16 __ad_timer_to_ticks(u16 timer_type, u16 par)
398{
399 u16 retval = 0;
400
401 switch (timer_type) {
402 case AD_CURRENT_WHILE_TIMER:
403 if (par)
404 retval = (AD_SHORT_TIMEOUT_TIME*ad_ticks_per_sec);
405 else
406 retval = (AD_LONG_TIMEOUT_TIME*ad_ticks_per_sec);
407 break;
408 case AD_ACTOR_CHURN_TIMER:
409 retval = (AD_CHURN_DETECTION_TIME*ad_ticks_per_sec);
410 break;
411 case AD_PERIODIC_TIMER:
412 retval = (par*ad_ticks_per_sec);
413 break;
414 case AD_PARTNER_CHURN_TIMER:
415 retval = (AD_CHURN_DETECTION_TIME*ad_ticks_per_sec);
416 break;
417 case AD_WAIT_WHILE_TIMER:
418 retval = (AD_AGGREGATE_WAIT_TIME*ad_ticks_per_sec);
419 break;
420 }
421
422 return retval;
423}
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451static void __choose_matched(struct lacpdu *lacpdu, struct port *port)
452{
453
454
455
456
457 if (((ntohs(lacpdu->partner_port) == port->actor_port_number) &&
458 (ntohs(lacpdu->partner_port_priority) == port->actor_port_priority) &&
459 MAC_ADDRESS_EQUAL(&(lacpdu->partner_system), &(port->actor_system)) &&
460 (ntohs(lacpdu->partner_system_priority) == port->actor_system_priority) &&
461 (ntohs(lacpdu->partner_key) == port->actor_oper_port_key) &&
462 ((lacpdu->partner_state & LACP_STATE_AGGREGATION) == (port->actor_oper_port_state & LACP_STATE_AGGREGATION))) ||
463 ((lacpdu->actor_state & LACP_STATE_AGGREGATION) == 0)
464 ) {
465 port->sm_vars |= AD_PORT_MATCHED;
466 } else {
467 port->sm_vars &= ~AD_PORT_MATCHED;
468 }
469}
470
471
472
473
474
475
476
477
478
479
480static void __record_pdu(struct lacpdu *lacpdu, struct port *port)
481{
482 if (lacpdu && port) {
483 struct port_params *partner = &port->partner_oper;
484
485 __choose_matched(lacpdu, port);
486
487
488
489 partner->port_number = ntohs(lacpdu->actor_port);
490 partner->port_priority = ntohs(lacpdu->actor_port_priority);
491 partner->system = lacpdu->actor_system;
492 partner->system_priority = ntohs(lacpdu->actor_system_priority);
493 partner->key = ntohs(lacpdu->actor_key);
494 partner->port_state = lacpdu->actor_state;
495
496
497 port->actor_oper_port_state &= ~LACP_STATE_DEFAULTED;
498
499
500
501
502 if ((port->sm_vars & AD_PORT_MATCHED) &&
503 (lacpdu->actor_state & LACP_STATE_SYNCHRONIZATION)) {
504 partner->port_state |= LACP_STATE_SYNCHRONIZATION;
505 slave_dbg(port->slave->bond->dev, port->slave->dev,
506 "partner sync=1\n");
507 } else {
508 partner->port_state &= ~LACP_STATE_SYNCHRONIZATION;
509 slave_dbg(port->slave->bond->dev, port->slave->dev,
510 "partner sync=0\n");
511 }
512 }
513}
514
515
516
517
518
519
520
521
522
523static void __record_default(struct port *port)
524{
525 if (port) {
526
527 memcpy(&port->partner_oper, &port->partner_admin,
528 sizeof(struct port_params));
529
530
531 port->actor_oper_port_state |= LACP_STATE_DEFAULTED;
532 }
533}
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548static void __update_selected(struct lacpdu *lacpdu, struct port *port)
549{
550 if (lacpdu && port) {
551 const struct port_params *partner = &port->partner_oper;
552
553
554
555
556 if (ntohs(lacpdu->actor_port) != partner->port_number ||
557 ntohs(lacpdu->actor_port_priority) != partner->port_priority ||
558 !MAC_ADDRESS_EQUAL(&lacpdu->actor_system, &partner->system) ||
559 ntohs(lacpdu->actor_system_priority) != partner->system_priority ||
560 ntohs(lacpdu->actor_key) != partner->key ||
561 (lacpdu->actor_state & LACP_STATE_AGGREGATION) != (partner->port_state & LACP_STATE_AGGREGATION)) {
562 port->sm_vars &= ~AD_PORT_SELECTED;
563 }
564 }
565}
566
567
568
569
570
571
572
573
574
575
576
577
578
579static void __update_default_selected(struct port *port)
580{
581 if (port) {
582 const struct port_params *admin = &port->partner_admin;
583 const struct port_params *oper = &port->partner_oper;
584
585
586
587
588 if (admin->port_number != oper->port_number ||
589 admin->port_priority != oper->port_priority ||
590 !MAC_ADDRESS_EQUAL(&admin->system, &oper->system) ||
591 admin->system_priority != oper->system_priority ||
592 admin->key != oper->key ||
593 (admin->port_state & LACP_STATE_AGGREGATION)
594 != (oper->port_state & LACP_STATE_AGGREGATION)) {
595 port->sm_vars &= ~AD_PORT_SELECTED;
596 }
597 }
598}
599
600
601
602
603
604
605
606
607
608
609
610
611
612static void __update_ntt(struct lacpdu *lacpdu, struct port *port)
613{
614
615 if (lacpdu && port) {
616
617
618
619 if ((ntohs(lacpdu->partner_port) != port->actor_port_number) ||
620 (ntohs(lacpdu->partner_port_priority) != port->actor_port_priority) ||
621 !MAC_ADDRESS_EQUAL(&(lacpdu->partner_system), &(port->actor_system)) ||
622 (ntohs(lacpdu->partner_system_priority) != port->actor_system_priority) ||
623 (ntohs(lacpdu->partner_key) != port->actor_oper_port_key) ||
624 ((lacpdu->partner_state & LACP_STATE_LACP_ACTIVITY) != (port->actor_oper_port_state & LACP_STATE_LACP_ACTIVITY)) ||
625 ((lacpdu->partner_state & LACP_STATE_LACP_TIMEOUT) != (port->actor_oper_port_state & LACP_STATE_LACP_TIMEOUT)) ||
626 ((lacpdu->partner_state & LACP_STATE_SYNCHRONIZATION) != (port->actor_oper_port_state & LACP_STATE_SYNCHRONIZATION)) ||
627 ((lacpdu->partner_state & LACP_STATE_AGGREGATION) != (port->actor_oper_port_state & LACP_STATE_AGGREGATION))
628 ) {
629 port->ntt = true;
630 }
631 }
632}
633
634
635
636
637
638
639static int __agg_ports_are_ready(struct aggregator *aggregator)
640{
641 struct port *port;
642 int retval = 1;
643
644 if (aggregator) {
645
646
647
648 for (port = aggregator->lag_ports;
649 port;
650 port = port->next_port_in_aggregator) {
651 if (!(port->sm_vars & AD_PORT_READY_N)) {
652 retval = 0;
653 break;
654 }
655 }
656 }
657
658 return retval;
659}
660
661
662
663
664
665
666
667static void __set_agg_ports_ready(struct aggregator *aggregator, int val)
668{
669 struct port *port;
670
671 for (port = aggregator->lag_ports; port;
672 port = port->next_port_in_aggregator) {
673 if (val)
674 port->sm_vars |= AD_PORT_READY;
675 else
676 port->sm_vars &= ~AD_PORT_READY;
677 }
678}
679
680static int __agg_active_ports(struct aggregator *agg)
681{
682 struct port *port;
683 int active = 0;
684
685 for (port = agg->lag_ports; port;
686 port = port->next_port_in_aggregator) {
687 if (port->is_enabled)
688 active++;
689 }
690
691 return active;
692}
693
694
695
696
697
698
699static u32 __get_agg_bandwidth(struct aggregator *aggregator)
700{
701 int nports = __agg_active_ports(aggregator);
702 u32 bandwidth = 0;
703
704 if (nports) {
705 switch (__get_link_speed(aggregator->lag_ports)) {
706 case AD_LINK_SPEED_1MBPS:
707 bandwidth = nports;
708 break;
709 case AD_LINK_SPEED_10MBPS:
710 bandwidth = nports * 10;
711 break;
712 case AD_LINK_SPEED_100MBPS:
713 bandwidth = nports * 100;
714 break;
715 case AD_LINK_SPEED_1000MBPS:
716 bandwidth = nports * 1000;
717 break;
718 case AD_LINK_SPEED_2500MBPS:
719 bandwidth = nports * 2500;
720 break;
721 case AD_LINK_SPEED_5000MBPS:
722 bandwidth = nports * 5000;
723 break;
724 case AD_LINK_SPEED_10000MBPS:
725 bandwidth = nports * 10000;
726 break;
727 case AD_LINK_SPEED_14000MBPS:
728 bandwidth = nports * 14000;
729 break;
730 case AD_LINK_SPEED_20000MBPS:
731 bandwidth = nports * 20000;
732 break;
733 case AD_LINK_SPEED_25000MBPS:
734 bandwidth = nports * 25000;
735 break;
736 case AD_LINK_SPEED_40000MBPS:
737 bandwidth = nports * 40000;
738 break;
739 case AD_LINK_SPEED_50000MBPS:
740 bandwidth = nports * 50000;
741 break;
742 case AD_LINK_SPEED_56000MBPS:
743 bandwidth = nports * 56000;
744 break;
745 case AD_LINK_SPEED_100000MBPS:
746 bandwidth = nports * 100000;
747 break;
748 case AD_LINK_SPEED_200000MBPS:
749 bandwidth = nports * 200000;
750 break;
751 case AD_LINK_SPEED_400000MBPS:
752 bandwidth = nports * 400000;
753 break;
754 default:
755 bandwidth = 0;
756 }
757 }
758 return bandwidth;
759}
760
761
762
763
764
765
766
767static struct aggregator *__get_active_agg(struct aggregator *aggregator)
768{
769 struct bonding *bond = aggregator->slave->bond;
770 struct list_head *iter;
771 struct slave *slave;
772
773 bond_for_each_slave_rcu(bond, slave, iter)
774 if (SLAVE_AD_INFO(slave)->aggregator.is_active)
775 return &(SLAVE_AD_INFO(slave)->aggregator);
776
777 return NULL;
778}
779
780
781
782
783
784static inline void __update_lacpdu_from_port(struct port *port)
785{
786 struct lacpdu *lacpdu = &port->lacpdu;
787 const struct port_params *partner = &port->partner_oper;
788
789
790
791
792
793
794
795
796 lacpdu->actor_system_priority = htons(port->actor_system_priority);
797 lacpdu->actor_system = port->actor_system;
798 lacpdu->actor_key = htons(port->actor_oper_port_key);
799 lacpdu->actor_port_priority = htons(port->actor_port_priority);
800 lacpdu->actor_port = htons(port->actor_port_number);
801 lacpdu->actor_state = port->actor_oper_port_state;
802 slave_dbg(port->slave->bond->dev, port->slave->dev,
803 "update lacpdu: actor port state %x\n",
804 port->actor_oper_port_state);
805
806
807
808
809
810
811 lacpdu->partner_system_priority = htons(partner->system_priority);
812 lacpdu->partner_system = partner->system;
813 lacpdu->partner_key = htons(partner->key);
814 lacpdu->partner_port_priority = htons(partner->port_priority);
815 lacpdu->partner_port = htons(partner->port_number);
816 lacpdu->partner_state = partner->port_state;
817
818
819
820
821
822
823
824
825
826
827}
828
829
830
831
832
833
834
835
836
837
838static int ad_lacpdu_send(struct port *port)
839{
840 struct slave *slave = port->slave;
841 struct sk_buff *skb;
842 struct lacpdu_header *lacpdu_header;
843 int length = sizeof(struct lacpdu_header);
844
845 skb = dev_alloc_skb(length);
846 if (!skb)
847 return -ENOMEM;
848
849 atomic64_inc(&SLAVE_AD_INFO(slave)->stats.lacpdu_tx);
850 atomic64_inc(&BOND_AD_INFO(slave->bond).stats.lacpdu_tx);
851
852 skb->dev = slave->dev;
853 skb_reset_mac_header(skb);
854 skb->network_header = skb->mac_header + ETH_HLEN;
855 skb->protocol = PKT_TYPE_LACPDU;
856 skb->priority = TC_PRIO_CONTROL;
857
858 lacpdu_header = skb_put(skb, length);
859
860 ether_addr_copy(lacpdu_header->hdr.h_dest, lacpdu_mcast_addr);
861
862
863
864 ether_addr_copy(lacpdu_header->hdr.h_source, slave->perm_hwaddr);
865 lacpdu_header->hdr.h_proto = PKT_TYPE_LACPDU;
866
867 lacpdu_header->lacpdu = port->lacpdu;
868
869 dev_queue_xmit(skb);
870
871 return 0;
872}
873
874
875
876
877
878
879
880
881
882static int ad_marker_send(struct port *port, struct bond_marker *marker)
883{
884 struct slave *slave = port->slave;
885 struct sk_buff *skb;
886 struct bond_marker_header *marker_header;
887 int length = sizeof(struct bond_marker_header);
888
889 skb = dev_alloc_skb(length + 16);
890 if (!skb)
891 return -ENOMEM;
892
893 switch (marker->tlv_type) {
894 case AD_MARKER_INFORMATION_SUBTYPE:
895 atomic64_inc(&SLAVE_AD_INFO(slave)->stats.marker_tx);
896 atomic64_inc(&BOND_AD_INFO(slave->bond).stats.marker_tx);
897 break;
898 case AD_MARKER_RESPONSE_SUBTYPE:
899 atomic64_inc(&SLAVE_AD_INFO(slave)->stats.marker_resp_tx);
900 atomic64_inc(&BOND_AD_INFO(slave->bond).stats.marker_resp_tx);
901 break;
902 }
903
904 skb_reserve(skb, 16);
905
906 skb->dev = slave->dev;
907 skb_reset_mac_header(skb);
908 skb->network_header = skb->mac_header + ETH_HLEN;
909 skb->protocol = PKT_TYPE_LACPDU;
910
911 marker_header = skb_put(skb, length);
912
913 ether_addr_copy(marker_header->hdr.h_dest, lacpdu_mcast_addr);
914
915
916
917 ether_addr_copy(marker_header->hdr.h_source, slave->perm_hwaddr);
918 marker_header->hdr.h_proto = PKT_TYPE_LACPDU;
919
920 marker_header->marker = *marker;
921
922 dev_queue_xmit(skb);
923
924 return 0;
925}
926
927
928
929
930
931
932static void ad_mux_machine(struct port *port, bool *update_slave_arr)
933{
934 mux_states_t last_state;
935
936
937
938
939 last_state = port->sm_mux_state;
940
941 if (port->sm_vars & AD_PORT_BEGIN) {
942 port->sm_mux_state = AD_MUX_DETACHED;
943 } else {
944 switch (port->sm_mux_state) {
945 case AD_MUX_DETACHED:
946 if ((port->sm_vars & AD_PORT_SELECTED)
947 || (port->sm_vars & AD_PORT_STANDBY))
948
949 port->sm_mux_state = AD_MUX_WAITING;
950 break;
951 case AD_MUX_WAITING:
952
953 if (!(port->sm_vars & AD_PORT_SELECTED)) {
954 port->sm_vars &= ~AD_PORT_READY_N;
955
956
957
958
959
960 __set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
961 port->sm_mux_state = AD_MUX_DETACHED;
962 break;
963 }
964
965
966 if (port->sm_mux_timer_counter
967 && !(--port->sm_mux_timer_counter))
968 port->sm_vars |= AD_PORT_READY_N;
969
970
971
972
973
974
975 __set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
976
977
978
979
980 if ((port->sm_vars & AD_PORT_READY)
981 && !port->sm_mux_timer_counter)
982 port->sm_mux_state = AD_MUX_ATTACHED;
983 break;
984 case AD_MUX_ATTACHED:
985
986
987
988 if ((port->sm_vars & AD_PORT_SELECTED) &&
989 (port->partner_oper.port_state & LACP_STATE_SYNCHRONIZATION) &&
990 !__check_agg_selection_timer(port)) {
991 if (port->aggregator->is_active)
992 port->sm_mux_state =
993 AD_MUX_COLLECTING_DISTRIBUTING;
994 } else if (!(port->sm_vars & AD_PORT_SELECTED) ||
995 (port->sm_vars & AD_PORT_STANDBY)) {
996
997 port->sm_vars &= ~AD_PORT_READY_N;
998
999
1000
1001
1002
1003 __set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
1004 port->sm_mux_state = AD_MUX_DETACHED;
1005 } else if (port->aggregator->is_active) {
1006 port->actor_oper_port_state |=
1007 LACP_STATE_SYNCHRONIZATION;
1008 }
1009 break;
1010 case AD_MUX_COLLECTING_DISTRIBUTING:
1011 if (!(port->sm_vars & AD_PORT_SELECTED) ||
1012 (port->sm_vars & AD_PORT_STANDBY) ||
1013 !(port->partner_oper.port_state & LACP_STATE_SYNCHRONIZATION) ||
1014 !(port->actor_oper_port_state & LACP_STATE_SYNCHRONIZATION)) {
1015 port->sm_mux_state = AD_MUX_ATTACHED;
1016 } else {
1017
1018
1019
1020
1021 if (port->aggregator &&
1022 port->aggregator->is_active &&
1023 !__port_is_enabled(port)) {
1024
1025 __enable_port(port);
1026 }
1027 }
1028 break;
1029 default:
1030 break;
1031 }
1032 }
1033
1034
1035 if (port->sm_mux_state != last_state) {
1036 slave_dbg(port->slave->bond->dev, port->slave->dev,
1037 "Mux Machine: Port=%d, Last State=%d, Curr State=%d\n",
1038 port->actor_port_number,
1039 last_state,
1040 port->sm_mux_state);
1041 switch (port->sm_mux_state) {
1042 case AD_MUX_DETACHED:
1043 port->actor_oper_port_state &= ~LACP_STATE_SYNCHRONIZATION;
1044 ad_disable_collecting_distributing(port,
1045 update_slave_arr);
1046 port->actor_oper_port_state &= ~LACP_STATE_COLLECTING;
1047 port->actor_oper_port_state &= ~LACP_STATE_DISTRIBUTING;
1048 port->ntt = true;
1049 break;
1050 case AD_MUX_WAITING:
1051 port->sm_mux_timer_counter = __ad_timer_to_ticks(AD_WAIT_WHILE_TIMER, 0);
1052 break;
1053 case AD_MUX_ATTACHED:
1054 if (port->aggregator->is_active)
1055 port->actor_oper_port_state |=
1056 LACP_STATE_SYNCHRONIZATION;
1057 else
1058 port->actor_oper_port_state &=
1059 ~LACP_STATE_SYNCHRONIZATION;
1060 port->actor_oper_port_state &= ~LACP_STATE_COLLECTING;
1061 port->actor_oper_port_state &= ~LACP_STATE_DISTRIBUTING;
1062 ad_disable_collecting_distributing(port,
1063 update_slave_arr);
1064 port->ntt = true;
1065 break;
1066 case AD_MUX_COLLECTING_DISTRIBUTING:
1067 port->actor_oper_port_state |= LACP_STATE_COLLECTING;
1068 port->actor_oper_port_state |= LACP_STATE_DISTRIBUTING;
1069 port->actor_oper_port_state |= LACP_STATE_SYNCHRONIZATION;
1070 ad_enable_collecting_distributing(port,
1071 update_slave_arr);
1072 port->ntt = true;
1073 break;
1074 default:
1075 break;
1076 }
1077 }
1078}
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
1090{
1091 rx_states_t last_state;
1092
1093
1094
1095
1096 last_state = port->sm_rx_state;
1097
1098 if (lacpdu) {
1099 atomic64_inc(&SLAVE_AD_INFO(port->slave)->stats.lacpdu_rx);
1100 atomic64_inc(&BOND_AD_INFO(port->slave->bond).stats.lacpdu_rx);
1101 }
1102
1103
1104
1105 if (port->sm_vars & AD_PORT_BEGIN) {
1106 port->sm_rx_state = AD_RX_INITIALIZE;
1107 port->sm_vars |= AD_PORT_CHURNED;
1108
1109 } else if (!(port->sm_vars & AD_PORT_BEGIN) && !port->is_enabled)
1110 port->sm_rx_state = AD_RX_PORT_DISABLED;
1111
1112 else if (lacpdu && ((port->sm_rx_state == AD_RX_EXPIRED) ||
1113 (port->sm_rx_state == AD_RX_DEFAULTED) ||
1114 (port->sm_rx_state == AD_RX_CURRENT))) {
1115 if (port->sm_rx_state != AD_RX_CURRENT)
1116 port->sm_vars |= AD_PORT_CHURNED;
1117 port->sm_rx_timer_counter = 0;
1118 port->sm_rx_state = AD_RX_CURRENT;
1119 } else {
1120
1121 if (port->sm_rx_timer_counter &&
1122 !(--port->sm_rx_timer_counter)) {
1123 switch (port->sm_rx_state) {
1124 case AD_RX_EXPIRED:
1125 port->sm_rx_state = AD_RX_DEFAULTED;
1126 break;
1127 case AD_RX_CURRENT:
1128 port->sm_rx_state = AD_RX_EXPIRED;
1129 break;
1130 default:
1131 break;
1132 }
1133 } else {
1134
1135 switch (port->sm_rx_state) {
1136 case AD_RX_PORT_DISABLED:
1137 if (port->is_enabled &&
1138 (port->sm_vars & AD_PORT_LACP_ENABLED))
1139 port->sm_rx_state = AD_RX_EXPIRED;
1140 else if (port->is_enabled
1141 && ((port->sm_vars
1142 & AD_PORT_LACP_ENABLED) == 0))
1143 port->sm_rx_state = AD_RX_LACP_DISABLED;
1144 break;
1145 default:
1146 break;
1147
1148 }
1149 }
1150 }
1151
1152
1153 if ((port->sm_rx_state != last_state) || (lacpdu)) {
1154 slave_dbg(port->slave->bond->dev, port->slave->dev,
1155 "Rx Machine: Port=%d, Last State=%d, Curr State=%d\n",
1156 port->actor_port_number,
1157 last_state,
1158 port->sm_rx_state);
1159 switch (port->sm_rx_state) {
1160 case AD_RX_INITIALIZE:
1161 if (!(port->actor_oper_port_key & AD_DUPLEX_KEY_MASKS))
1162 port->sm_vars &= ~AD_PORT_LACP_ENABLED;
1163 else
1164 port->sm_vars |= AD_PORT_LACP_ENABLED;
1165 port->sm_vars &= ~AD_PORT_SELECTED;
1166 __record_default(port);
1167 port->actor_oper_port_state &= ~LACP_STATE_EXPIRED;
1168 port->sm_rx_state = AD_RX_PORT_DISABLED;
1169
1170 fallthrough;
1171 case AD_RX_PORT_DISABLED:
1172 port->sm_vars &= ~AD_PORT_MATCHED;
1173 break;
1174 case AD_RX_LACP_DISABLED:
1175 port->sm_vars &= ~AD_PORT_SELECTED;
1176 __record_default(port);
1177 port->partner_oper.port_state &= ~LACP_STATE_AGGREGATION;
1178 port->sm_vars |= AD_PORT_MATCHED;
1179 port->actor_oper_port_state &= ~LACP_STATE_EXPIRED;
1180 break;
1181 case AD_RX_EXPIRED:
1182
1183
1184
1185
1186
1187
1188 port->partner_oper.port_state &= ~LACP_STATE_SYNCHRONIZATION;
1189 port->sm_vars &= ~AD_PORT_MATCHED;
1190 port->partner_oper.port_state |= LACP_STATE_LACP_TIMEOUT;
1191 port->partner_oper.port_state |= LACP_STATE_LACP_ACTIVITY;
1192 port->sm_rx_timer_counter = __ad_timer_to_ticks(AD_CURRENT_WHILE_TIMER, (u16)(AD_SHORT_TIMEOUT));
1193 port->actor_oper_port_state |= LACP_STATE_EXPIRED;
1194 port->sm_vars |= AD_PORT_CHURNED;
1195 break;
1196 case AD_RX_DEFAULTED:
1197 __update_default_selected(port);
1198 __record_default(port);
1199 port->sm_vars |= AD_PORT_MATCHED;
1200 port->actor_oper_port_state &= ~LACP_STATE_EXPIRED;
1201 break;
1202 case AD_RX_CURRENT:
1203
1204 if (MAC_ADDRESS_EQUAL(&(lacpdu->actor_system),
1205 &(port->actor_system))) {
1206 slave_err(port->slave->bond->dev, port->slave->dev, "An illegal loopback occurred on slave\n"
1207 "Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports\n");
1208 return;
1209 }
1210 __update_selected(lacpdu, port);
1211 __update_ntt(lacpdu, port);
1212 __record_pdu(lacpdu, port);
1213 port->sm_rx_timer_counter = __ad_timer_to_ticks(AD_CURRENT_WHILE_TIMER, (u16)(port->actor_oper_port_state & LACP_STATE_LACP_TIMEOUT));
1214 port->actor_oper_port_state &= ~LACP_STATE_EXPIRED;
1215 break;
1216 default:
1217 break;
1218 }
1219 }
1220}
1221
1222
1223
1224
1225
1226
1227static void ad_churn_machine(struct port *port)
1228{
1229 if (port->sm_vars & AD_PORT_CHURNED) {
1230 port->sm_vars &= ~AD_PORT_CHURNED;
1231 port->sm_churn_actor_state = AD_CHURN_MONITOR;
1232 port->sm_churn_partner_state = AD_CHURN_MONITOR;
1233 port->sm_churn_actor_timer_counter =
1234 __ad_timer_to_ticks(AD_ACTOR_CHURN_TIMER, 0);
1235 port->sm_churn_partner_timer_counter =
1236 __ad_timer_to_ticks(AD_PARTNER_CHURN_TIMER, 0);
1237 return;
1238 }
1239 if (port->sm_churn_actor_timer_counter &&
1240 !(--port->sm_churn_actor_timer_counter) &&
1241 port->sm_churn_actor_state == AD_CHURN_MONITOR) {
1242 if (port->actor_oper_port_state & LACP_STATE_SYNCHRONIZATION) {
1243 port->sm_churn_actor_state = AD_NO_CHURN;
1244 } else {
1245 port->churn_actor_count++;
1246 port->sm_churn_actor_state = AD_CHURN;
1247 }
1248 }
1249 if (port->sm_churn_partner_timer_counter &&
1250 !(--port->sm_churn_partner_timer_counter) &&
1251 port->sm_churn_partner_state == AD_CHURN_MONITOR) {
1252 if (port->partner_oper.port_state & LACP_STATE_SYNCHRONIZATION) {
1253 port->sm_churn_partner_state = AD_NO_CHURN;
1254 } else {
1255 port->churn_partner_count++;
1256 port->sm_churn_partner_state = AD_CHURN;
1257 }
1258 }
1259}
1260
1261
1262
1263
1264
1265static void ad_tx_machine(struct port *port)
1266{
1267
1268
1269
1270 if (port->sm_tx_timer_counter && !(--port->sm_tx_timer_counter)) {
1271
1272 if (port->ntt && (port->sm_vars & AD_PORT_LACP_ENABLED)) {
1273 __update_lacpdu_from_port(port);
1274
1275 if (ad_lacpdu_send(port) >= 0) {
1276 slave_dbg(port->slave->bond->dev,
1277 port->slave->dev,
1278 "Sent LACPDU on port %d\n",
1279 port->actor_port_number);
1280
1281
1282
1283
1284 port->ntt = false;
1285 }
1286 }
1287
1288
1289
1290 port->sm_tx_timer_counter = ad_ticks_per_sec/AD_MAX_TX_IN_SECOND;
1291 }
1292}
1293
1294
1295
1296
1297
1298
1299
1300
1301static void ad_periodic_machine(struct port *port, struct bond_params *bond_params)
1302{
1303 periodic_states_t last_state;
1304
1305
1306 last_state = port->sm_periodic_state;
1307
1308
1309 if (((port->sm_vars & AD_PORT_BEGIN) || !(port->sm_vars & AD_PORT_LACP_ENABLED) || !port->is_enabled) ||
1310 (!(port->actor_oper_port_state & LACP_STATE_LACP_ACTIVITY) && !(port->partner_oper.port_state & LACP_STATE_LACP_ACTIVITY)) ||
1311 !bond_params->lacp_active) {
1312 port->sm_periodic_state = AD_NO_PERIODIC;
1313 }
1314
1315 else if (port->sm_periodic_timer_counter) {
1316
1317 if (!(--port->sm_periodic_timer_counter)) {
1318
1319 port->sm_periodic_state = AD_PERIODIC_TX;
1320 } else {
1321
1322
1323
1324 switch (port->sm_periodic_state) {
1325 case AD_FAST_PERIODIC:
1326 if (!(port->partner_oper.port_state
1327 & LACP_STATE_LACP_TIMEOUT))
1328 port->sm_periodic_state = AD_SLOW_PERIODIC;
1329 break;
1330 case AD_SLOW_PERIODIC:
1331 if ((port->partner_oper.port_state & LACP_STATE_LACP_TIMEOUT)) {
1332 port->sm_periodic_timer_counter = 0;
1333 port->sm_periodic_state = AD_PERIODIC_TX;
1334 }
1335 break;
1336 default:
1337 break;
1338 }
1339 }
1340 } else {
1341 switch (port->sm_periodic_state) {
1342 case AD_NO_PERIODIC:
1343 port->sm_periodic_state = AD_FAST_PERIODIC;
1344 break;
1345 case AD_PERIODIC_TX:
1346 if (!(port->partner_oper.port_state &
1347 LACP_STATE_LACP_TIMEOUT))
1348 port->sm_periodic_state = AD_SLOW_PERIODIC;
1349 else
1350 port->sm_periodic_state = AD_FAST_PERIODIC;
1351 break;
1352 default:
1353 break;
1354 }
1355 }
1356
1357
1358 if (port->sm_periodic_state != last_state) {
1359 slave_dbg(port->slave->bond->dev, port->slave->dev,
1360 "Periodic Machine: Port=%d, Last State=%d, Curr State=%d\n",
1361 port->actor_port_number, last_state,
1362 port->sm_periodic_state);
1363 switch (port->sm_periodic_state) {
1364 case AD_NO_PERIODIC:
1365 port->sm_periodic_timer_counter = 0;
1366 break;
1367 case AD_FAST_PERIODIC:
1368
1369 port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_FAST_PERIODIC_TIME))-1;
1370 break;
1371 case AD_SLOW_PERIODIC:
1372
1373 port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_SLOW_PERIODIC_TIME))-1;
1374 break;
1375 case AD_PERIODIC_TX:
1376 port->ntt = true;
1377 break;
1378 default:
1379 break;
1380 }
1381 }
1382}
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393static void ad_port_selection_logic(struct port *port, bool *update_slave_arr)
1394{
1395 struct aggregator *aggregator, *free_aggregator = NULL, *temp_aggregator;
1396 struct port *last_port = NULL, *curr_port;
1397 struct list_head *iter;
1398 struct bonding *bond;
1399 struct slave *slave;
1400 int found = 0;
1401
1402
1403 if (port->sm_vars & AD_PORT_SELECTED)
1404 return;
1405
1406 bond = __get_bond_by_port(port);
1407
1408
1409 if (port->aggregator) {
1410
1411 temp_aggregator = port->aggregator;
1412 for (curr_port = temp_aggregator->lag_ports; curr_port;
1413 last_port = curr_port,
1414 curr_port = curr_port->next_port_in_aggregator) {
1415 if (curr_port == port) {
1416 temp_aggregator->num_of_ports--;
1417
1418
1419
1420 if (!last_port) {
1421 temp_aggregator->lag_ports =
1422 port->next_port_in_aggregator;
1423 } else {
1424
1425
1426
1427 last_port->next_port_in_aggregator =
1428 port->next_port_in_aggregator;
1429 }
1430
1431
1432
1433
1434 port->aggregator = NULL;
1435 port->next_port_in_aggregator = NULL;
1436 port->actor_port_aggregator_identifier = 0;
1437
1438 slave_dbg(bond->dev, port->slave->dev, "Port %d left LAG %d\n",
1439 port->actor_port_number,
1440 temp_aggregator->aggregator_identifier);
1441
1442
1443
1444 if (!temp_aggregator->lag_ports)
1445 ad_clear_agg(temp_aggregator);
1446 break;
1447 }
1448 }
1449 if (!curr_port) {
1450
1451
1452
1453 net_warn_ratelimited("%s: (slave %s): Warning: Port %d was related to aggregator %d but was not on its port list\n",
1454 port->slave->bond->dev->name,
1455 port->slave->dev->name,
1456 port->actor_port_number,
1457 port->aggregator->aggregator_identifier);
1458 }
1459 }
1460
1461 bond_for_each_slave(bond, slave, iter) {
1462 aggregator = &(SLAVE_AD_INFO(slave)->aggregator);
1463
1464
1465 if (!aggregator->lag_ports) {
1466 if (!free_aggregator)
1467 free_aggregator = aggregator;
1468 continue;
1469 }
1470
1471 if (((aggregator->actor_oper_aggregator_key == port->actor_oper_port_key) &&
1472 MAC_ADDRESS_EQUAL(&(aggregator->partner_system), &(port->partner_oper.system)) &&
1473 (aggregator->partner_system_priority == port->partner_oper.system_priority) &&
1474 (aggregator->partner_oper_aggregator_key == port->partner_oper.key)
1475 ) &&
1476 ((!MAC_ADDRESS_EQUAL(&(port->partner_oper.system), &(null_mac_addr)) &&
1477 !aggregator->is_individual)
1478 )
1479 ) {
1480
1481 port->aggregator = aggregator;
1482 port->actor_port_aggregator_identifier =
1483 port->aggregator->aggregator_identifier;
1484 port->next_port_in_aggregator = aggregator->lag_ports;
1485 port->aggregator->num_of_ports++;
1486 aggregator->lag_ports = port;
1487 slave_dbg(bond->dev, slave->dev, "Port %d joined LAG %d (existing LAG)\n",
1488 port->actor_port_number,
1489 port->aggregator->aggregator_identifier);
1490
1491
1492 port->sm_vars |= AD_PORT_SELECTED;
1493 found = 1;
1494 break;
1495 }
1496 }
1497
1498
1499
1500
1501 if (!found) {
1502 if (free_aggregator) {
1503
1504 port->aggregator = free_aggregator;
1505 port->actor_port_aggregator_identifier =
1506 port->aggregator->aggregator_identifier;
1507
1508
1509
1510
1511 if (port->actor_oper_port_key & AD_DUPLEX_KEY_MASKS)
1512
1513 port->aggregator->is_individual = false;
1514 else
1515 port->aggregator->is_individual = true;
1516
1517 port->aggregator->actor_admin_aggregator_key =
1518 port->actor_admin_port_key;
1519 port->aggregator->actor_oper_aggregator_key =
1520 port->actor_oper_port_key;
1521 port->aggregator->partner_system =
1522 port->partner_oper.system;
1523 port->aggregator->partner_system_priority =
1524 port->partner_oper.system_priority;
1525 port->aggregator->partner_oper_aggregator_key = port->partner_oper.key;
1526 port->aggregator->receive_state = 1;
1527 port->aggregator->transmit_state = 1;
1528 port->aggregator->lag_ports = port;
1529 port->aggregator->num_of_ports++;
1530
1531
1532 port->sm_vars |= AD_PORT_SELECTED;
1533
1534 slave_dbg(bond->dev, port->slave->dev, "Port %d joined LAG %d (new LAG)\n",
1535 port->actor_port_number,
1536 port->aggregator->aggregator_identifier);
1537 } else {
1538 slave_err(bond->dev, port->slave->dev,
1539 "Port %d did not find a suitable aggregator\n",
1540 port->actor_port_number);
1541 }
1542 }
1543
1544
1545
1546
1547 __set_agg_ports_ready(port->aggregator,
1548 __agg_ports_are_ready(port->aggregator));
1549
1550 aggregator = __get_first_agg(port);
1551 ad_agg_selection_logic(aggregator, update_slave_arr);
1552
1553 if (!port->aggregator->is_active)
1554 port->actor_oper_port_state &= ~LACP_STATE_SYNCHRONIZATION;
1555}
1556
1557
1558
1559
1560static struct aggregator *ad_agg_selection_test(struct aggregator *best,
1561 struct aggregator *curr)
1562{
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587 if (!best)
1588 return curr;
1589
1590 if (!curr->is_individual && best->is_individual)
1591 return curr;
1592
1593 if (curr->is_individual && !best->is_individual)
1594 return best;
1595
1596 if (__agg_has_partner(curr) && !__agg_has_partner(best))
1597 return curr;
1598
1599 if (!__agg_has_partner(curr) && __agg_has_partner(best))
1600 return best;
1601
1602 switch (__get_agg_selection_mode(curr->lag_ports)) {
1603 case BOND_AD_COUNT:
1604 if (__agg_active_ports(curr) > __agg_active_ports(best))
1605 return curr;
1606
1607 if (__agg_active_ports(curr) < __agg_active_ports(best))
1608 return best;
1609
1610 fallthrough;
1611 case BOND_AD_STABLE:
1612 case BOND_AD_BANDWIDTH:
1613 if (__get_agg_bandwidth(curr) > __get_agg_bandwidth(best))
1614 return curr;
1615
1616 break;
1617
1618 default:
1619 net_warn_ratelimited("%s: (slave %s): Impossible agg select mode %d\n",
1620 curr->slave->bond->dev->name,
1621 curr->slave->dev->name,
1622 __get_agg_selection_mode(curr->lag_ports));
1623 break;
1624 }
1625
1626 return best;
1627}
1628
1629static int agg_device_up(const struct aggregator *agg)
1630{
1631 struct port *port = agg->lag_ports;
1632
1633 if (!port)
1634 return 0;
1635
1636 for (port = agg->lag_ports; port;
1637 port = port->next_port_in_aggregator) {
1638 if (netif_running(port->slave->dev) &&
1639 netif_carrier_ok(port->slave->dev))
1640 return 1;
1641 }
1642
1643 return 0;
1644}
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672static void ad_agg_selection_logic(struct aggregator *agg,
1673 bool *update_slave_arr)
1674{
1675 struct aggregator *best, *active, *origin;
1676 struct bonding *bond = agg->slave->bond;
1677 struct list_head *iter;
1678 struct slave *slave;
1679 struct port *port;
1680
1681 rcu_read_lock();
1682 origin = agg;
1683 active = __get_active_agg(agg);
1684 best = (active && agg_device_up(active)) ? active : NULL;
1685
1686 bond_for_each_slave_rcu(bond, slave, iter) {
1687 agg = &(SLAVE_AD_INFO(slave)->aggregator);
1688
1689 agg->is_active = 0;
1690
1691 if (__agg_active_ports(agg) && agg_device_up(agg))
1692 best = ad_agg_selection_test(best, agg);
1693 }
1694
1695 if (best &&
1696 __get_agg_selection_mode(best->lag_ports) == BOND_AD_STABLE) {
1697
1698
1699
1700
1701
1702 if (active && active->lag_ports &&
1703 __agg_active_ports(active) &&
1704 (__agg_has_partner(active) ||
1705 (!__agg_has_partner(active) &&
1706 !__agg_has_partner(best)))) {
1707 if (!(!active->actor_oper_aggregator_key &&
1708 best->actor_oper_aggregator_key)) {
1709 best = NULL;
1710 active->is_active = 1;
1711 }
1712 }
1713 }
1714
1715 if (best && (best == active)) {
1716 best = NULL;
1717 active->is_active = 1;
1718 }
1719
1720
1721 if (best) {
1722 netdev_dbg(bond->dev, "(slave %s): best Agg=%d; P=%d; a k=%d; p k=%d; Ind=%d; Act=%d\n",
1723 best->slave ? best->slave->dev->name : "NULL",
1724 best->aggregator_identifier, best->num_of_ports,
1725 best->actor_oper_aggregator_key,
1726 best->partner_oper_aggregator_key,
1727 best->is_individual, best->is_active);
1728 netdev_dbg(bond->dev, "(slave %s): best ports %p slave %p\n",
1729 best->slave ? best->slave->dev->name : "NULL",
1730 best->lag_ports, best->slave);
1731
1732 bond_for_each_slave_rcu(bond, slave, iter) {
1733 agg = &(SLAVE_AD_INFO(slave)->aggregator);
1734
1735 slave_dbg(bond->dev, slave->dev, "Agg=%d; P=%d; a k=%d; p k=%d; Ind=%d; Act=%d\n",
1736 agg->aggregator_identifier, agg->num_of_ports,
1737 agg->actor_oper_aggregator_key,
1738 agg->partner_oper_aggregator_key,
1739 agg->is_individual, agg->is_active);
1740 }
1741
1742
1743 if (best->is_individual)
1744 net_warn_ratelimited("%s: Warning: No 802.3ad response from the link partner for any adapters in the bond\n",
1745 bond->dev->name);
1746
1747 best->is_active = 1;
1748 netdev_dbg(bond->dev, "(slave %s): LAG %d chosen as the active LAG\n",
1749 best->slave ? best->slave->dev->name : "NULL",
1750 best->aggregator_identifier);
1751 netdev_dbg(bond->dev, "(slave %s): Agg=%d; P=%d; a k=%d; p k=%d; Ind=%d; Act=%d\n",
1752 best->slave ? best->slave->dev->name : "NULL",
1753 best->aggregator_identifier, best->num_of_ports,
1754 best->actor_oper_aggregator_key,
1755 best->partner_oper_aggregator_key,
1756 best->is_individual, best->is_active);
1757
1758
1759
1760
1761 if (active) {
1762 for (port = active->lag_ports; port;
1763 port = port->next_port_in_aggregator) {
1764 __disable_port(port);
1765 }
1766 }
1767
1768 *update_slave_arr = true;
1769 }
1770
1771
1772
1773
1774 active = __get_active_agg(origin);
1775
1776 if (active) {
1777 if (!__agg_has_partner(active)) {
1778 for (port = active->lag_ports; port;
1779 port = port->next_port_in_aggregator) {
1780 __enable_port(port);
1781 }
1782 }
1783 }
1784
1785 rcu_read_unlock();
1786
1787 bond_3ad_set_carrier(bond);
1788}
1789
1790
1791
1792
1793
1794static void ad_clear_agg(struct aggregator *aggregator)
1795{
1796 if (aggregator) {
1797 aggregator->is_individual = false;
1798 aggregator->actor_admin_aggregator_key = 0;
1799 aggregator->actor_oper_aggregator_key = 0;
1800 eth_zero_addr(aggregator->partner_system.mac_addr_value);
1801 aggregator->partner_system_priority = 0;
1802 aggregator->partner_oper_aggregator_key = 0;
1803 aggregator->receive_state = 0;
1804 aggregator->transmit_state = 0;
1805 aggregator->lag_ports = NULL;
1806 aggregator->is_active = 0;
1807 aggregator->num_of_ports = 0;
1808 pr_debug("%s: LAG %d was cleared\n",
1809 aggregator->slave ?
1810 aggregator->slave->dev->name : "NULL",
1811 aggregator->aggregator_identifier);
1812 }
1813}
1814
1815
1816
1817
1818
1819static void ad_initialize_agg(struct aggregator *aggregator)
1820{
1821 if (aggregator) {
1822 ad_clear_agg(aggregator);
1823
1824 eth_zero_addr(aggregator->aggregator_mac_address.mac_addr_value);
1825 aggregator->aggregator_identifier = 0;
1826 aggregator->slave = NULL;
1827 }
1828}
1829
1830
1831
1832
1833
1834
1835static void ad_initialize_port(struct port *port, int lacp_fast)
1836{
1837 static const struct port_params tmpl = {
1838 .system_priority = 0xffff,
1839 .key = 1,
1840 .port_number = 1,
1841 .port_priority = 0xff,
1842 .port_state = 1,
1843 };
1844 static const struct lacpdu lacpdu = {
1845 .subtype = 0x01,
1846 .version_number = 0x01,
1847 .tlv_type_actor_info = 0x01,
1848 .actor_information_length = 0x14,
1849 .tlv_type_partner_info = 0x02,
1850 .partner_information_length = 0x14,
1851 .tlv_type_collector_info = 0x03,
1852 .collector_information_length = 0x10,
1853 .collector_max_delay = htons(AD_COLLECTOR_MAX_DELAY),
1854 };
1855
1856 if (port) {
1857 port->actor_port_priority = 0xff;
1858 port->actor_port_aggregator_identifier = 0;
1859 port->ntt = false;
1860 port->actor_admin_port_state = LACP_STATE_AGGREGATION |
1861 LACP_STATE_LACP_ACTIVITY;
1862 port->actor_oper_port_state = LACP_STATE_AGGREGATION |
1863 LACP_STATE_LACP_ACTIVITY;
1864
1865 if (lacp_fast)
1866 port->actor_oper_port_state |= LACP_STATE_LACP_TIMEOUT;
1867
1868 memcpy(&port->partner_admin, &tmpl, sizeof(tmpl));
1869 memcpy(&port->partner_oper, &tmpl, sizeof(tmpl));
1870
1871 port->is_enabled = true;
1872
1873 port->sm_vars = AD_PORT_BEGIN | AD_PORT_LACP_ENABLED;
1874 port->sm_rx_state = 0;
1875 port->sm_rx_timer_counter = 0;
1876 port->sm_periodic_state = 0;
1877 port->sm_periodic_timer_counter = 0;
1878 port->sm_mux_state = 0;
1879 port->sm_mux_timer_counter = 0;
1880 port->sm_tx_state = 0;
1881 port->aggregator = NULL;
1882 port->next_port_in_aggregator = NULL;
1883 port->transaction_id = 0;
1884
1885 port->sm_churn_actor_timer_counter = 0;
1886 port->sm_churn_actor_state = 0;
1887 port->churn_actor_count = 0;
1888 port->sm_churn_partner_timer_counter = 0;
1889 port->sm_churn_partner_state = 0;
1890 port->churn_partner_count = 0;
1891
1892 memcpy(&port->lacpdu, &lacpdu, sizeof(lacpdu));
1893 }
1894}
1895
1896
1897
1898
1899
1900
1901
1902
1903static void ad_enable_collecting_distributing(struct port *port,
1904 bool *update_slave_arr)
1905{
1906 if (port->aggregator->is_active) {
1907 slave_dbg(port->slave->bond->dev, port->slave->dev,
1908 "Enabling port %d (LAG %d)\n",
1909 port->actor_port_number,
1910 port->aggregator->aggregator_identifier);
1911 __enable_port(port);
1912
1913 *update_slave_arr = true;
1914 }
1915}
1916
1917
1918
1919
1920
1921
1922static void ad_disable_collecting_distributing(struct port *port,
1923 bool *update_slave_arr)
1924{
1925 if (port->aggregator &&
1926 !MAC_ADDRESS_EQUAL(&(port->aggregator->partner_system),
1927 &(null_mac_addr))) {
1928 slave_dbg(port->slave->bond->dev, port->slave->dev,
1929 "Disabling port %d (LAG %d)\n",
1930 port->actor_port_number,
1931 port->aggregator->aggregator_identifier);
1932 __disable_port(port);
1933
1934 *update_slave_arr = true;
1935 }
1936}
1937
1938
1939
1940
1941
1942
1943static void ad_marker_info_received(struct bond_marker *marker_info,
1944 struct port *port)
1945{
1946 struct bond_marker marker;
1947
1948 atomic64_inc(&SLAVE_AD_INFO(port->slave)->stats.marker_rx);
1949 atomic64_inc(&BOND_AD_INFO(port->slave->bond).stats.marker_rx);
1950
1951
1952 memcpy(&marker, marker_info, sizeof(struct bond_marker));
1953
1954 marker.tlv_type = AD_MARKER_RESPONSE_SUBTYPE;
1955
1956
1957 if (ad_marker_send(port, &marker) >= 0)
1958 slave_dbg(port->slave->bond->dev, port->slave->dev,
1959 "Sent Marker Response on port %d\n",
1960 port->actor_port_number);
1961}
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972static void ad_marker_response_received(struct bond_marker *marker,
1973 struct port *port)
1974{
1975 atomic64_inc(&SLAVE_AD_INFO(port->slave)->stats.marker_resp_rx);
1976 atomic64_inc(&BOND_AD_INFO(port->slave->bond).stats.marker_resp_rx);
1977
1978
1979}
1980
1981
1982
1983
1984#define AD_AGGREGATOR_SELECTION_TIMER 8
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout)
1996{
1997 BOND_AD_INFO(bond).agg_select_timer = timeout;
1998}
1999
2000
2001
2002
2003
2004
2005
2006
2007void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution)
2008{
2009
2010 if (!MAC_ADDRESS_EQUAL(&(BOND_AD_INFO(bond).system.sys_mac_addr),
2011 bond->dev->dev_addr)) {
2012
2013 BOND_AD_INFO(bond).aggregator_identifier = 0;
2014
2015 BOND_AD_INFO(bond).system.sys_priority =
2016 bond->params.ad_actor_sys_prio;
2017 if (is_zero_ether_addr(bond->params.ad_actor_system))
2018 BOND_AD_INFO(bond).system.sys_mac_addr =
2019 *((struct mac_addr *)bond->dev->dev_addr);
2020 else
2021 BOND_AD_INFO(bond).system.sys_mac_addr =
2022 *((struct mac_addr *)bond->params.ad_actor_system);
2023
2024
2025
2026
2027 ad_ticks_per_sec = tick_resolution;
2028
2029 bond_3ad_initiate_agg_selection(bond,
2030 AD_AGGREGATOR_SELECTION_TIMER *
2031 ad_ticks_per_sec);
2032 }
2033}
2034
2035
2036
2037
2038
2039
2040
2041
2042void bond_3ad_bind_slave(struct slave *slave)
2043{
2044 struct bonding *bond = bond_get_bond_by_slave(slave);
2045 struct port *port;
2046 struct aggregator *aggregator;
2047
2048
2049 if (SLAVE_AD_INFO(slave)->port.slave != slave) {
2050
2051
2052 port = &(SLAVE_AD_INFO(slave)->port);
2053
2054 ad_initialize_port(port, bond->params.lacp_fast);
2055
2056 port->slave = slave;
2057 port->actor_port_number = SLAVE_AD_INFO(slave)->id;
2058
2059
2060
2061 port->actor_admin_port_key = bond->params.ad_user_port_key << 6;
2062 ad_update_actor_keys(port, false);
2063
2064 __ad_actor_update_port(port);
2065
2066
2067
2068 port->sm_tx_timer_counter = ad_ticks_per_sec/AD_MAX_TX_IN_SECOND;
2069
2070 __disable_port(port);
2071
2072
2073 aggregator = &(SLAVE_AD_INFO(slave)->aggregator);
2074
2075 ad_initialize_agg(aggregator);
2076
2077 aggregator->aggregator_mac_address = *((struct mac_addr *)bond->dev->dev_addr);
2078 aggregator->aggregator_identifier = ++BOND_AD_INFO(bond).aggregator_identifier;
2079 aggregator->slave = slave;
2080 aggregator->is_active = 0;
2081 aggregator->num_of_ports = 0;
2082 }
2083}
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093void bond_3ad_unbind_slave(struct slave *slave)
2094{
2095 struct port *port, *prev_port, *temp_port;
2096 struct aggregator *aggregator, *new_aggregator, *temp_aggregator;
2097 int select_new_active_agg = 0;
2098 struct bonding *bond = slave->bond;
2099 struct slave *slave_iter;
2100 struct list_head *iter;
2101 bool dummy_slave_update;
2102
2103
2104 spin_lock_bh(&bond->mode_lock);
2105 aggregator = &(SLAVE_AD_INFO(slave)->aggregator);
2106 port = &(SLAVE_AD_INFO(slave)->port);
2107
2108
2109 if (!port->slave) {
2110 slave_warn(bond->dev, slave->dev, "Trying to unbind an uninitialized port\n");
2111 goto out;
2112 }
2113
2114 slave_dbg(bond->dev, slave->dev, "Unbinding Link Aggregation Group %d\n",
2115 aggregator->aggregator_identifier);
2116
2117
2118 port->actor_oper_port_state &= ~LACP_STATE_SYNCHRONIZATION;
2119 port->actor_oper_port_state &= ~LACP_STATE_COLLECTING;
2120 port->actor_oper_port_state &= ~LACP_STATE_DISTRIBUTING;
2121 port->actor_oper_port_state &= ~LACP_STATE_AGGREGATION;
2122 __update_lacpdu_from_port(port);
2123 ad_lacpdu_send(port);
2124
2125
2126 if (aggregator->lag_ports) {
2127
2128
2129
2130
2131
2132 if ((aggregator->lag_ports != port) ||
2133 (aggregator->lag_ports->next_port_in_aggregator)) {
2134
2135 bond_for_each_slave(bond, slave_iter, iter) {
2136 new_aggregator = &(SLAVE_AD_INFO(slave_iter)->aggregator);
2137
2138
2139
2140 if (!new_aggregator->lag_ports ||
2141 ((new_aggregator->lag_ports == port) &&
2142 !new_aggregator->lag_ports->next_port_in_aggregator))
2143 break;
2144 }
2145 if (!slave_iter)
2146 new_aggregator = NULL;
2147
2148
2149
2150
2151
2152 if ((new_aggregator) && ((!new_aggregator->lag_ports) || ((new_aggregator->lag_ports == port) && !new_aggregator->lag_ports->next_port_in_aggregator))) {
2153 slave_dbg(bond->dev, slave->dev, "Some port(s) related to LAG %d - replacing with LAG %d\n",
2154 aggregator->aggregator_identifier,
2155 new_aggregator->aggregator_identifier);
2156
2157 if ((new_aggregator->lag_ports == port) &&
2158 new_aggregator->is_active) {
2159 slave_info(bond->dev, slave->dev, "Removing an active aggregator\n");
2160 select_new_active_agg = 1;
2161 }
2162
2163 new_aggregator->is_individual = aggregator->is_individual;
2164 new_aggregator->actor_admin_aggregator_key = aggregator->actor_admin_aggregator_key;
2165 new_aggregator->actor_oper_aggregator_key = aggregator->actor_oper_aggregator_key;
2166 new_aggregator->partner_system = aggregator->partner_system;
2167 new_aggregator->partner_system_priority = aggregator->partner_system_priority;
2168 new_aggregator->partner_oper_aggregator_key = aggregator->partner_oper_aggregator_key;
2169 new_aggregator->receive_state = aggregator->receive_state;
2170 new_aggregator->transmit_state = aggregator->transmit_state;
2171 new_aggregator->lag_ports = aggregator->lag_ports;
2172 new_aggregator->is_active = aggregator->is_active;
2173 new_aggregator->num_of_ports = aggregator->num_of_ports;
2174
2175
2176
2177
2178 for (temp_port = aggregator->lag_ports; temp_port;
2179 temp_port = temp_port->next_port_in_aggregator) {
2180 temp_port->aggregator = new_aggregator;
2181 temp_port->actor_port_aggregator_identifier = new_aggregator->aggregator_identifier;
2182 }
2183
2184 ad_clear_agg(aggregator);
2185
2186 if (select_new_active_agg)
2187 ad_agg_selection_logic(__get_first_agg(port),
2188 &dummy_slave_update);
2189 } else {
2190 slave_warn(bond->dev, slave->dev, "unbinding aggregator, and could not find a new aggregator for its ports\n");
2191 }
2192 } else {
2193
2194
2195
2196 select_new_active_agg = aggregator->is_active;
2197 ad_clear_agg(aggregator);
2198 if (select_new_active_agg) {
2199 slave_info(bond->dev, slave->dev, "Removing an active aggregator\n");
2200
2201 temp_aggregator = __get_first_agg(port);
2202 if (temp_aggregator)
2203 ad_agg_selection_logic(temp_aggregator,
2204 &dummy_slave_update);
2205 }
2206 }
2207 }
2208
2209 slave_dbg(bond->dev, slave->dev, "Unbinding port %d\n", port->actor_port_number);
2210
2211
2212 bond_for_each_slave(bond, slave_iter, iter) {
2213 temp_aggregator = &(SLAVE_AD_INFO(slave_iter)->aggregator);
2214 prev_port = NULL;
2215
2216 for (temp_port = temp_aggregator->lag_ports; temp_port;
2217 prev_port = temp_port,
2218 temp_port = temp_port->next_port_in_aggregator) {
2219 if (temp_port == port) {
2220
2221
2222
2223 if (prev_port)
2224 prev_port->next_port_in_aggregator = temp_port->next_port_in_aggregator;
2225 else
2226 temp_aggregator->lag_ports = temp_port->next_port_in_aggregator;
2227 temp_aggregator->num_of_ports--;
2228 if (__agg_active_ports(temp_aggregator) == 0) {
2229 select_new_active_agg = temp_aggregator->is_active;
2230 ad_clear_agg(temp_aggregator);
2231 if (select_new_active_agg) {
2232 slave_info(bond->dev, slave->dev, "Removing an active aggregator\n");
2233
2234 ad_agg_selection_logic(__get_first_agg(port),
2235 &dummy_slave_update);
2236 }
2237 }
2238 break;
2239 }
2240 }
2241 }
2242 port->slave = NULL;
2243
2244out:
2245 spin_unlock_bh(&bond->mode_lock);
2246}
2247
2248
2249
2250
2251
2252
2253
2254
2255void bond_3ad_update_ad_actor_settings(struct bonding *bond)
2256{
2257 struct list_head *iter;
2258 struct slave *slave;
2259
2260 ASSERT_RTNL();
2261
2262 BOND_AD_INFO(bond).system.sys_priority = bond->params.ad_actor_sys_prio;
2263 if (is_zero_ether_addr(bond->params.ad_actor_system))
2264 BOND_AD_INFO(bond).system.sys_mac_addr =
2265 *((struct mac_addr *)bond->dev->dev_addr);
2266 else
2267 BOND_AD_INFO(bond).system.sys_mac_addr =
2268 *((struct mac_addr *)bond->params.ad_actor_system);
2269
2270 spin_lock_bh(&bond->mode_lock);
2271 bond_for_each_slave(bond, slave, iter) {
2272 struct port *port = &(SLAVE_AD_INFO(slave))->port;
2273
2274 __ad_actor_update_port(port);
2275 port->ntt = true;
2276 }
2277 spin_unlock_bh(&bond->mode_lock);
2278}
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293void bond_3ad_state_machine_handler(struct work_struct *work)
2294{
2295 struct bonding *bond = container_of(work, struct bonding,
2296 ad_work.work);
2297 struct aggregator *aggregator;
2298 struct list_head *iter;
2299 struct slave *slave;
2300 struct port *port;
2301 bool should_notify_rtnl = BOND_SLAVE_NOTIFY_LATER;
2302 bool update_slave_arr = false;
2303
2304
2305
2306
2307
2308 spin_lock_bh(&bond->mode_lock);
2309 rcu_read_lock();
2310
2311
2312 if (!bond_has_slaves(bond))
2313 goto re_arm;
2314
2315
2316 if (BOND_AD_INFO(bond).agg_select_timer &&
2317 !(--BOND_AD_INFO(bond).agg_select_timer)) {
2318 slave = bond_first_slave_rcu(bond);
2319 port = slave ? &(SLAVE_AD_INFO(slave)->port) : NULL;
2320
2321
2322 if (port) {
2323 if (!port->slave) {
2324 net_warn_ratelimited("%s: Warning: bond's first port is uninitialized\n",
2325 bond->dev->name);
2326 goto re_arm;
2327 }
2328
2329 aggregator = __get_first_agg(port);
2330 ad_agg_selection_logic(aggregator, &update_slave_arr);
2331 }
2332 bond_3ad_set_carrier(bond);
2333 }
2334
2335
2336 bond_for_each_slave_rcu(bond, slave, iter) {
2337 port = &(SLAVE_AD_INFO(slave)->port);
2338 if (!port->slave) {
2339 net_warn_ratelimited("%s: Warning: Found an uninitialized port\n",
2340 bond->dev->name);
2341 goto re_arm;
2342 }
2343
2344 ad_rx_machine(NULL, port);
2345 ad_periodic_machine(port, &bond->params);
2346 ad_port_selection_logic(port, &update_slave_arr);
2347 ad_mux_machine(port, &update_slave_arr);
2348 ad_tx_machine(port);
2349 ad_churn_machine(port);
2350
2351
2352 if (port->sm_vars & AD_PORT_BEGIN)
2353 port->sm_vars &= ~AD_PORT_BEGIN;
2354 }
2355
2356re_arm:
2357 bond_for_each_slave_rcu(bond, slave, iter) {
2358 if (slave->should_notify) {
2359 should_notify_rtnl = BOND_SLAVE_NOTIFY_NOW;
2360 break;
2361 }
2362 }
2363 rcu_read_unlock();
2364 spin_unlock_bh(&bond->mode_lock);
2365
2366 if (update_slave_arr)
2367 bond_slave_arr_work_rearm(bond, 0);
2368
2369 if (should_notify_rtnl && rtnl_trylock()) {
2370 bond_slave_state_notify(bond);
2371 rtnl_unlock();
2372 }
2373 queue_delayed_work(bond->wq, &bond->ad_work, ad_delta_in_ticks);
2374}
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385static int bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave)
2386{
2387 struct bonding *bond = slave->bond;
2388 int ret = RX_HANDLER_ANOTHER;
2389 struct bond_marker *marker;
2390 struct port *port;
2391 atomic64_t *stat;
2392
2393 port = &(SLAVE_AD_INFO(slave)->port);
2394 if (!port->slave) {
2395 net_warn_ratelimited("%s: Warning: port of slave %s is uninitialized\n",
2396 slave->dev->name, slave->bond->dev->name);
2397 return ret;
2398 }
2399
2400 switch (lacpdu->subtype) {
2401 case AD_TYPE_LACPDU:
2402 ret = RX_HANDLER_CONSUMED;
2403 slave_dbg(slave->bond->dev, slave->dev,
2404 "Received LACPDU on port %d\n",
2405 port->actor_port_number);
2406
2407 spin_lock(&slave->bond->mode_lock);
2408 ad_rx_machine(lacpdu, port);
2409 spin_unlock(&slave->bond->mode_lock);
2410 break;
2411 case AD_TYPE_MARKER:
2412 ret = RX_HANDLER_CONSUMED;
2413
2414
2415
2416 marker = (struct bond_marker *)lacpdu;
2417 switch (marker->tlv_type) {
2418 case AD_MARKER_INFORMATION_SUBTYPE:
2419 slave_dbg(slave->bond->dev, slave->dev, "Received Marker Information on port %d\n",
2420 port->actor_port_number);
2421 ad_marker_info_received(marker, port);
2422 break;
2423 case AD_MARKER_RESPONSE_SUBTYPE:
2424 slave_dbg(slave->bond->dev, slave->dev, "Received Marker Response on port %d\n",
2425 port->actor_port_number);
2426 ad_marker_response_received(marker, port);
2427 break;
2428 default:
2429 slave_dbg(slave->bond->dev, slave->dev, "Received an unknown Marker subtype on port %d\n",
2430 port->actor_port_number);
2431 stat = &SLAVE_AD_INFO(slave)->stats.marker_unknown_rx;
2432 atomic64_inc(stat);
2433 stat = &BOND_AD_INFO(bond).stats.marker_unknown_rx;
2434 atomic64_inc(stat);
2435 }
2436 break;
2437 default:
2438 atomic64_inc(&SLAVE_AD_INFO(slave)->stats.lacpdu_unknown_rx);
2439 atomic64_inc(&BOND_AD_INFO(bond).stats.lacpdu_unknown_rx);
2440 }
2441
2442 return ret;
2443}
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456static void ad_update_actor_keys(struct port *port, bool reset)
2457{
2458 u8 duplex = 0;
2459 u16 ospeed = 0, speed = 0;
2460 u16 old_oper_key = port->actor_oper_port_key;
2461
2462 port->actor_admin_port_key &= ~(AD_SPEED_KEY_MASKS|AD_DUPLEX_KEY_MASKS);
2463 if (!reset) {
2464 speed = __get_link_speed(port);
2465 ospeed = (old_oper_key & AD_SPEED_KEY_MASKS) >> 1;
2466 duplex = __get_duplex(port);
2467 port->actor_admin_port_key |= (speed << 1) | duplex;
2468 }
2469 port->actor_oper_port_key = port->actor_admin_port_key;
2470
2471 if (old_oper_key != port->actor_oper_port_key) {
2472
2473 if (duplex)
2474 port->sm_vars |= AD_PORT_LACP_ENABLED;
2475 else
2476 port->sm_vars &= ~AD_PORT_LACP_ENABLED;
2477
2478 if (!reset) {
2479 if (!speed) {
2480 slave_err(port->slave->bond->dev,
2481 port->slave->dev,
2482 "speed changed to 0 on port %d\n",
2483 port->actor_port_number);
2484 } else if (duplex && ospeed != speed) {
2485
2486 port->sm_vars |= AD_PORT_BEGIN;
2487 }
2488 }
2489 }
2490}
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500void bond_3ad_adapter_speed_duplex_changed(struct slave *slave)
2501{
2502 struct port *port;
2503
2504 port = &(SLAVE_AD_INFO(slave)->port);
2505
2506
2507 if (!port->slave) {
2508 slave_warn(slave->bond->dev, slave->dev,
2509 "speed/duplex changed for uninitialized port\n");
2510 return;
2511 }
2512
2513 spin_lock_bh(&slave->bond->mode_lock);
2514 ad_update_actor_keys(port, false);
2515 spin_unlock_bh(&slave->bond->mode_lock);
2516 slave_dbg(slave->bond->dev, slave->dev, "Port %d changed speed/duplex\n",
2517 port->actor_port_number);
2518}
2519
2520
2521
2522
2523
2524
2525
2526
2527void bond_3ad_handle_link_change(struct slave *slave, char link)
2528{
2529 struct aggregator *agg;
2530 struct port *port;
2531 bool dummy;
2532
2533 port = &(SLAVE_AD_INFO(slave)->port);
2534
2535
2536 if (!port->slave) {
2537 slave_warn(slave->bond->dev, slave->dev, "link status changed for uninitialized port\n");
2538 return;
2539 }
2540
2541 spin_lock_bh(&slave->bond->mode_lock);
2542
2543
2544
2545
2546
2547
2548
2549 if (link == BOND_LINK_UP) {
2550 port->is_enabled = true;
2551 ad_update_actor_keys(port, false);
2552 } else {
2553
2554 port->is_enabled = false;
2555 ad_update_actor_keys(port, true);
2556 }
2557 agg = __get_first_agg(port);
2558 ad_agg_selection_logic(agg, &dummy);
2559
2560 spin_unlock_bh(&slave->bond->mode_lock);
2561
2562 slave_dbg(slave->bond->dev, slave->dev, "Port %d changed link status to %s\n",
2563 port->actor_port_number,
2564 link == BOND_LINK_UP ? "UP" : "DOWN");
2565
2566
2567
2568
2569 bond_update_slave_arr(slave->bond, NULL);
2570}
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585int bond_3ad_set_carrier(struct bonding *bond)
2586{
2587 struct aggregator *active;
2588 struct slave *first_slave;
2589 int ret = 1;
2590
2591 rcu_read_lock();
2592 first_slave = bond_first_slave_rcu(bond);
2593 if (!first_slave) {
2594 ret = 0;
2595 goto out;
2596 }
2597 active = __get_active_agg(&(SLAVE_AD_INFO(first_slave)->aggregator));
2598 if (active) {
2599
2600 if (__agg_active_ports(active) < bond->params.min_links) {
2601 if (netif_carrier_ok(bond->dev)) {
2602 netif_carrier_off(bond->dev);
2603 goto out;
2604 }
2605 } else if (!netif_carrier_ok(bond->dev)) {
2606 netif_carrier_on(bond->dev);
2607 goto out;
2608 }
2609 } else if (netif_carrier_ok(bond->dev)) {
2610 netif_carrier_off(bond->dev);
2611 }
2612out:
2613 rcu_read_unlock();
2614 return ret;
2615}
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625int __bond_3ad_get_active_agg_info(struct bonding *bond,
2626 struct ad_info *ad_info)
2627{
2628 struct aggregator *aggregator = NULL;
2629 struct list_head *iter;
2630 struct slave *slave;
2631 struct port *port;
2632
2633 bond_for_each_slave_rcu(bond, slave, iter) {
2634 port = &(SLAVE_AD_INFO(slave)->port);
2635 if (port->aggregator && port->aggregator->is_active) {
2636 aggregator = port->aggregator;
2637 break;
2638 }
2639 }
2640
2641 if (!aggregator)
2642 return -1;
2643
2644 ad_info->aggregator_id = aggregator->aggregator_identifier;
2645 ad_info->ports = __agg_active_ports(aggregator);
2646 ad_info->actor_key = aggregator->actor_oper_aggregator_key;
2647 ad_info->partner_key = aggregator->partner_oper_aggregator_key;
2648 ether_addr_copy(ad_info->partner_system,
2649 aggregator->partner_system.mac_addr_value);
2650 return 0;
2651}
2652
2653int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info)
2654{
2655 int ret;
2656
2657 rcu_read_lock();
2658 ret = __bond_3ad_get_active_agg_info(bond, ad_info);
2659 rcu_read_unlock();
2660
2661 return ret;
2662}
2663
2664int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
2665 struct slave *slave)
2666{
2667 struct lacpdu *lacpdu, _lacpdu;
2668
2669 if (skb->protocol != PKT_TYPE_LACPDU)
2670 return RX_HANDLER_ANOTHER;
2671
2672 if (!MAC_ADDRESS_EQUAL(eth_hdr(skb)->h_dest, lacpdu_mcast_addr))
2673 return RX_HANDLER_ANOTHER;
2674
2675 lacpdu = skb_header_pointer(skb, 0, sizeof(_lacpdu), &_lacpdu);
2676 if (!lacpdu) {
2677 atomic64_inc(&SLAVE_AD_INFO(slave)->stats.lacpdu_illegal_rx);
2678 atomic64_inc(&BOND_AD_INFO(bond).stats.lacpdu_illegal_rx);
2679 return RX_HANDLER_ANOTHER;
2680 }
2681
2682 return bond_3ad_rx_indication(lacpdu, slave);
2683}
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696void bond_3ad_update_lacp_rate(struct bonding *bond)
2697{
2698 struct port *port = NULL;
2699 struct list_head *iter;
2700 struct slave *slave;
2701 int lacp_fast;
2702
2703 lacp_fast = bond->params.lacp_fast;
2704 spin_lock_bh(&bond->mode_lock);
2705 bond_for_each_slave(bond, slave, iter) {
2706 port = &(SLAVE_AD_INFO(slave)->port);
2707 if (lacp_fast)
2708 port->actor_oper_port_state |= LACP_STATE_LACP_TIMEOUT;
2709 else
2710 port->actor_oper_port_state &= ~LACP_STATE_LACP_TIMEOUT;
2711 }
2712 spin_unlock_bh(&bond->mode_lock);
2713}
2714
2715size_t bond_3ad_stats_size(void)
2716{
2717 return nla_total_size_64bit(sizeof(u64)) +
2718 nla_total_size_64bit(sizeof(u64)) +
2719 nla_total_size_64bit(sizeof(u64)) +
2720 nla_total_size_64bit(sizeof(u64)) +
2721 nla_total_size_64bit(sizeof(u64)) +
2722 nla_total_size_64bit(sizeof(u64)) +
2723 nla_total_size_64bit(sizeof(u64)) +
2724 nla_total_size_64bit(sizeof(u64)) +
2725 nla_total_size_64bit(sizeof(u64));
2726}
2727
2728int bond_3ad_stats_fill(struct sk_buff *skb, struct bond_3ad_stats *stats)
2729{
2730 u64 val;
2731
2732 val = atomic64_read(&stats->lacpdu_rx);
2733 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_LACPDU_RX, val,
2734 BOND_3AD_STAT_PAD))
2735 return -EMSGSIZE;
2736 val = atomic64_read(&stats->lacpdu_tx);
2737 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_LACPDU_TX, val,
2738 BOND_3AD_STAT_PAD))
2739 return -EMSGSIZE;
2740 val = atomic64_read(&stats->lacpdu_unknown_rx);
2741 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_LACPDU_UNKNOWN_RX, val,
2742 BOND_3AD_STAT_PAD))
2743 return -EMSGSIZE;
2744 val = atomic64_read(&stats->lacpdu_illegal_rx);
2745 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_LACPDU_ILLEGAL_RX, val,
2746 BOND_3AD_STAT_PAD))
2747 return -EMSGSIZE;
2748
2749 val = atomic64_read(&stats->marker_rx);
2750 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_MARKER_RX, val,
2751 BOND_3AD_STAT_PAD))
2752 return -EMSGSIZE;
2753 val = atomic64_read(&stats->marker_tx);
2754 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_MARKER_TX, val,
2755 BOND_3AD_STAT_PAD))
2756 return -EMSGSIZE;
2757 val = atomic64_read(&stats->marker_resp_rx);
2758 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_MARKER_RESP_RX, val,
2759 BOND_3AD_STAT_PAD))
2760 return -EMSGSIZE;
2761 val = atomic64_read(&stats->marker_resp_tx);
2762 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_MARKER_RESP_TX, val,
2763 BOND_3AD_STAT_PAD))
2764 return -EMSGSIZE;
2765 val = atomic64_read(&stats->marker_unknown_rx);
2766 if (nla_put_u64_64bit(skb, BOND_3AD_STAT_MARKER_UNKNOWN_RX, val,
2767 BOND_3AD_STAT_PAD))
2768 return -EMSGSIZE;
2769
2770 return 0;
2771}
2772