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bonding: convert packets_per_slave to use the new option API
[deliverable/linux.git] / drivers / net / bonding / bond_options.c
CommitLineData
72be35fe
JP		 1/*
2 * drivers/net/bond/bond_options.c - bonding options
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
eecdaa6e 4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
72be35fe
JP		 5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14#include <linux/errno.h>
15#include <linux/if.h>
d9e32b21
JP		 16#include <linux/netdevice.h>
17#include <linux/rwlock.h>
18#include <linux/rcupdate.h>
09117362 19#include <linux/ctype.h>
72be35fe
JP		 20#include "bonding.h"
21
2b3798d5
NA		 22static struct bond_opt_value bond_mode_tbl[] = {
23 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
24 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
25 { "balance-xor", BOND_MODE_XOR, 0},
26 { "broadcast", BOND_MODE_BROADCAST, 0},
27 { "802.3ad", BOND_MODE_8023AD, 0},
28 { "balance-tlb", BOND_MODE_TLB, 0},
29 { "balance-alb", BOND_MODE_ALB, 0},
30 { NULL, -1, 0},
31};
32
aa59d851
NA		 33static struct bond_opt_value bond_pps_tbl[] = {
34 { "default", 1, BOND_VALFLAG_DEFAULT},
35 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
36 { NULL, -1, 0},
37};
38
09117362 39static struct bond_option bond_opts[] = {
2b3798d5
NA		 40 [BOND_OPT_MODE] = {
41 .id = BOND_OPT_MODE,
42 .name = "mode",
43 .desc = "bond device mode",
44 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
45 .values = bond_mode_tbl,
46 .set = bond_option_mode_set
47 },
aa59d851
NA		 48 [BOND_OPT_PACKETS_PER_SLAVE] = {
49 .id = BOND_OPT_PACKETS_PER_SLAVE,
50 .name = "packets_per_slave",
51 .desc = "Packets to send per slave in RR mode",
52 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
53 .values = bond_pps_tbl,
54 .set = bond_option_pps_set
55 },
09117362
NA		 56 { }
57};
58
59/* Searches for a value in opt's values[] table */
60struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
61{
62 struct bond_option *opt;
63 int i;
64
65 opt = bond_opt_get(option);
66 if (WARN_ON(!opt))
67 return NULL;
68 for (i = 0; opt->values && opt->values[i].string; i++)
69 if (opt->values[i].value == val)
70 return &opt->values[i];
71
72 return NULL;
73}
74
75/* Searches for a value in opt's values[] table which matches the flagmask */
76static struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
77 u32 flagmask)
78{
79 int i;
80
81 for (i = 0; opt->values && opt->values[i].string; i++)
82 if (opt->values[i].flags & flagmask)
83 return &opt->values[i];
84
85 return NULL;
86}
87
88/* If maxval is missing then there's no range to check. In case minval is
89 * missing then it's considered to be 0.
90 */
91static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
92{
93 struct bond_opt_value *minval, *maxval;
94
95 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
96 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
97 if (!maxval || (minval && val < minval->value) || val > maxval->value)
98 return false;
99
100 return true;
101}
102
103/**
104 * bond_opt_parse - parse option value
105 * @opt: the option to parse against
106 * @val: value to parse
107 *
108 * This function tries to extract the value from @val and check if it's
109 * a possible match for the option and returns NULL if a match isn't found,
110 * or the struct_opt_value that matched. It also strips the new line from
111 * @val->string if it's present.
112 */
113struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
114 struct bond_opt_value *val)
115{
116 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
117 struct bond_opt_value *tbl, *ret = NULL;
118 bool checkval;
119 int i, rv;
120
121 /* No parsing if the option wants a raw val */
122 if (opt->flags & BOND_OPTFLAG_RAWVAL)
123 return val;
124
125 tbl = opt->values;
126 if (!tbl)
127 goto out;
128
129 /* ULLONG_MAX is used to bypass string processing */
130 checkval = val->value != ULLONG_MAX;
131 if (!checkval) {
132 if (!val->string)
133 goto out;
134 p = strchr(val->string, '\n');
135 if (p)
136 *p = '\0';
137 for (p = val->string; *p; p++)
138 if (!(isdigit(*p) || isspace(*p)))
139 break;
140 /* The following code extracts the string to match or the value
141 * and sets checkval appropriately
142 */
143 if (*p) {
144 rv = sscanf(val->string, "%32s", valstr);
145 } else {
146 rv = sscanf(val->string, "%llu", &val->value);
147 checkval = true;
148 }
149 if (!rv)
150 goto out;
151 }
152
153 for (i = 0; tbl[i].string; i++) {
154 /* Check for exact match */
155 if (checkval) {
156 if (val->value == tbl[i].value)
157 ret = &tbl[i];
158 } else {
159 if (!strcmp(valstr, "default") &&
160 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
161 ret = &tbl[i];
162
163 if (!strcmp(valstr, tbl[i].string))
164 ret = &tbl[i];
165 }
166 /* Found an exact match */
167 if (ret)
168 goto out;
169 }
170 /* Possible range match */
171 if (checkval && bond_opt_check_range(opt, val->value))
172 ret = val;
173out:
174 return ret;
175}
176
177/* Check opt's dependencies against bond mode and currently set options */
178static int bond_opt_check_deps(struct bonding *bond,
179 const struct bond_option *opt)
180{
181 struct bond_params *params = &bond->params;
182
183 if (test_bit(params->mode, &opt->unsuppmodes))
184 return -EACCES;
185 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
186 return -ENOTEMPTY;
187 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
188 return -EBUSY;
189
190 return 0;
191}
192
193static void bond_opt_dep_print(struct bonding *bond,
194 const struct bond_option *opt)
195{
2b3798d5 196 struct bond_opt_value *modeval;
09117362
NA		 197 struct bond_params *params;
198
199 params = &bond->params;
2b3798d5 200 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
09117362 201 if (test_bit(params->mode, &opt->unsuppmodes))
2b3798d5
NA		 202 pr_err("%s: option %s: mode dependency failed, not supported in mode %s(%llu)\n",
203 bond->dev->name, opt->name,
204 modeval->string, modeval->value);
09117362
NA		 205}
206
207static void bond_opt_error_interpret(struct bonding *bond,
208 const struct bond_option *opt,
209 int error, struct bond_opt_value *val)
210{
211 struct bond_opt_value *minval, *maxval;
212 char *p;
213
214 switch (error) {
215 case -EINVAL:
216 if (val) {
217 if (val->string) {
218 /* sometimes RAWVAL opts may have new lines */
219 p = strchr(val->string, '\n');
220 if (p)
221 *p = '\0';
222 pr_err("%s: option %s: invalid value (%s).\n",
223 bond->dev->name, opt->name, val->string);
224 } else {
225 pr_err("%s: option %s: invalid value (%llu).\n",
226 bond->dev->name, opt->name, val->value);
227 }
228 }
229 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
230 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
231 if (!maxval)
232 break;
233 pr_err("%s: option %s: allowed values %llu - %llu.\n",
234 bond->dev->name, opt->name, minval ? minval->value : 0,
235 maxval->value);
236 break;
237 case -EACCES:
238 bond_opt_dep_print(bond, opt);
239 break;
240 case -ENOTEMPTY:
241 pr_err("%s: option %s: unable to set because the bond device has slaves.\n",
242 bond->dev->name, opt->name);
243 break;
244 case -EBUSY:
245 pr_err("%s: option %s: unable to set because the bond device is up.\n",
246 bond->dev->name, opt->name);
247 break;
248 default:
249 break;
250 }
251}
252
253/**
254 * __bond_opt_set - set a bonding option
255 * @bond: target bond device
256 * @option: option to set
257 * @val: value to set it to
258 *
259 * This function is used to change the bond's option value, it can be
260 * used for both enabling/changing an option and for disabling it. RTNL lock
261 * must be obtained before calling this function.
262 */
263int __bond_opt_set(struct bonding *bond,
264 unsigned int option, struct bond_opt_value *val)
265{
266 struct bond_opt_value *retval = NULL;
267 const struct bond_option *opt;
268 int ret = -ENOENT;
269
270 ASSERT_RTNL();
271
272 opt = bond_opt_get(option);
273 if (WARN_ON(!val) || WARN_ON(!opt))
274 goto out;
275 ret = bond_opt_check_deps(bond, opt);
276 if (ret)
277 goto out;
278 retval = bond_opt_parse(opt, val);
279 if (!retval) {
280 ret = -EINVAL;
281 goto out;
282 }
283 ret = opt->set(bond, retval);
284out:
285 if (ret)
286 bond_opt_error_interpret(bond, opt, ret, val);
287
288 return ret;
289}
290
291/**
292 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
293 * @bond: target bond device
294 * @option: option to set
295 * @buf: value to set it to
296 *
297 * This function tries to acquire RTNL without blocking and if successful
298 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
299 */
300int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
301{
302 struct bond_opt_value optval;
303 int ret;
304
305 if (!rtnl_trylock())
306 return restart_syscall();
307 bond_opt_initstr(&optval, buf);
308 ret = __bond_opt_set(bond, option, &optval);
309 rtnl_unlock();
310
311 return ret;
312}
313
314/**
315 * bond_opt_get - get a pointer to an option
316 * @option: option for which to return a pointer
317 *
318 * This function checks if option is valid and if so returns a pointer
319 * to its entry in the bond_opts[] option array.
320 */
321struct bond_option *bond_opt_get(unsigned int option)
322{
323 if (!BOND_OPT_VALID(option))
324 return NULL;
325
326 return &bond_opts[option];
327}
328
2b3798d5 329int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval)
72be35fe 330{
2b3798d5 331 if (BOND_NO_USES_ARP(newval->value) && bond->params.arp_interval) {
fe9d04af 332 pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n",
2b3798d5 333 bond->dev->name, newval->string);
fe9d04af 334 /* disable arp monitoring */
335 bond->params.arp_interval = 0;
336 /* set miimon to default value */
337 bond->params.miimon = BOND_DEFAULT_MIIMON;
338 pr_info("%s: Setting MII monitoring interval to %d.\n",
339 bond->dev->name, bond->params.miimon);
72be35fe
JP		 340 }
341
342 /* don't cache arp_validate between modes */
343 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
2b3798d5
NA		 344 bond->params.mode = newval->value;
345
72be35fe
JP		 346 return 0;
347}
d9e32b21 348
752d48b5
JP		 349static struct net_device *__bond_option_active_slave_get(struct bonding *bond,
350 struct slave *slave)
351{
352 return USES_PRIMARY(bond->params.mode) && slave ? slave->dev : NULL;
353}
354
355struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
356{
357 struct slave *slave = rcu_dereference(bond->curr_active_slave);
358
359 return __bond_option_active_slave_get(bond, slave);
360}
361
362struct net_device *bond_option_active_slave_get(struct bonding *bond)
363{
364 return __bond_option_active_slave_get(bond, bond->curr_active_slave);
365}
366
d9e32b21
JP		 367int bond_option_active_slave_set(struct bonding *bond,
368 struct net_device *slave_dev)
369{
370 int ret = 0;
371
372 if (slave_dev) {
373 if (!netif_is_bond_slave(slave_dev)) {
374 pr_err("Device %s is not bonding slave.\n",
375 slave_dev->name);
376 return -EINVAL;
377 }
378
379 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
380 pr_err("%s: Device %s is not our slave.\n",
381 bond->dev->name, slave_dev->name);
382 return -EINVAL;
383 }
384 }
385
386 if (!USES_PRIMARY(bond->params.mode)) {
387 pr_err("%s: Unable to change active slave; %s is in mode %d\n",
388 bond->dev->name, bond->dev->name, bond->params.mode);
389 return -EINVAL;
390 }
391
392 block_netpoll_tx();
d9e32b21
JP		 393 write_lock_bh(&bond->curr_slave_lock);
394
395 /* check to see if we are clearing active */
396 if (!slave_dev) {
397 pr_info("%s: Clearing current active slave.\n",
398 bond->dev->name);
399 rcu_assign_pointer(bond->curr_active_slave, NULL);
400 bond_select_active_slave(bond);
401 } else {
402 struct slave *old_active = bond->curr_active_slave;
403 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
404
405 BUG_ON(!new_active);
406
407 if (new_active == old_active) {
408 /* do nothing */
409 pr_info("%s: %s is already the current active slave.\n",
410 bond->dev->name, new_active->dev->name);
411 } else {
412 if (old_active && (new_active->link == BOND_LINK_UP) &&
413 IS_UP(new_active->dev)) {
414 pr_info("%s: Setting %s as active slave.\n",
415 bond->dev->name, new_active->dev->name);
416 bond_change_active_slave(bond, new_active);
417 } else {
418 pr_err("%s: Could not set %s as active slave; either %s is down or the link is down.\n",
419 bond->dev->name, new_active->dev->name,
420 new_active->dev->name);
421 ret = -EINVAL;
422 }
423 }
424 }
425
426 write_unlock_bh(&bond->curr_slave_lock);
d9e32b21
JP		 427 unblock_netpoll_tx();
428 return ret;
429}
eecdaa6e 430
431int bond_option_miimon_set(struct bonding *bond, int miimon)
432{
433 if (miimon < 0) {
434 pr_err("%s: Invalid miimon value %d not in range %d-%d; rejected.\n",
435 bond->dev->name, miimon, 0, INT_MAX);
436 return -EINVAL;
437 }
438 pr_info("%s: Setting MII monitoring interval to %d.\n",
439 bond->dev->name, miimon);
440 bond->params.miimon = miimon;
441 if (bond->params.updelay)
442 pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value.\n",
443 bond->dev->name,
444 bond->params.updelay * bond->params.miimon);
445 if (bond->params.downdelay)
446 pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value.\n",
447 bond->dev->name,
448 bond->params.downdelay * bond->params.miimon);
449 if (miimon && bond->params.arp_interval) {
450 pr_info("%s: MII monitoring cannot be used with ARP monitoring. Disabling ARP monitoring...\n",
451 bond->dev->name);
452 bond->params.arp_interval = 0;
453 if (bond->params.arp_validate)
454 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
455 }
456 if (bond->dev->flags & IFF_UP) {
457 /* If the interface is up, we may need to fire off
458 * the MII timer. If the interface is down, the
459 * timer will get fired off when the open function
460 * is called.
461 */
462 if (!miimon) {
463 cancel_delayed_work_sync(&bond->mii_work);
464 } else {
465 cancel_delayed_work_sync(&bond->arp_work);
466 queue_delayed_work(bond->wq, &bond->mii_work, 0);
467 }
468 }
469 return 0;
470}
25852e29 471
472int bond_option_updelay_set(struct bonding *bond, int updelay)
473{
474 if (!(bond->params.miimon)) {
475 pr_err("%s: Unable to set up delay as MII monitoring is disabled\n",
476 bond->dev->name);
477 return -EPERM;
478 }
479
480 if (updelay < 0) {
481 pr_err("%s: Invalid up delay value %d not in range %d-%d; rejected.\n",
482 bond->dev->name, updelay, 0, INT_MAX);
483 return -EINVAL;
484 } else {
485 if ((updelay % bond->params.miimon) != 0) {
486 pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
487 bond->dev->name, updelay,
488 bond->params.miimon,
489 (updelay / bond->params.miimon) *
490 bond->params.miimon);
491 }
492 bond->params.updelay = updelay / bond->params.miimon;
493 pr_info("%s: Setting up delay to %d.\n",
494 bond->dev->name,
495 bond->params.updelay * bond->params.miimon);
496 }
497
498 return 0;
499}
c7461f9b 500
501int bond_option_downdelay_set(struct bonding *bond, int downdelay)
502{
503 if (!(bond->params.miimon)) {
504 pr_err("%s: Unable to set down delay as MII monitoring is disabled\n",
505 bond->dev->name);
506 return -EPERM;
507 }
508
509 if (downdelay < 0) {
510 pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n",
511 bond->dev->name, downdelay, 0, INT_MAX);
512 return -EINVAL;
513 } else {
514 if ((downdelay % bond->params.miimon) != 0) {
515 pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
516 bond->dev->name, downdelay,
517 bond->params.miimon,
518 (downdelay / bond->params.miimon) *
519 bond->params.miimon);
520 }
521 bond->params.downdelay = downdelay / bond->params.miimon;
522 pr_info("%s: Setting down delay to %d.\n",
523 bond->dev->name,
524 bond->params.downdelay * bond->params.miimon);
525 }
526
527 return 0;
528}
9f53e14e 529
530int bond_option_use_carrier_set(struct bonding *bond, int use_carrier)
531{
532 if ((use_carrier == 0) || (use_carrier == 1)) {
533 bond->params.use_carrier = use_carrier;
534 pr_info("%s: Setting use_carrier to %d.\n",
535 bond->dev->name, use_carrier);
536 } else {
537 pr_info("%s: Ignoring invalid use_carrier value %d.\n",
538 bond->dev->name, use_carrier);
539 }
540
541 return 0;
542}
06151dbc 543
544int bond_option_arp_interval_set(struct bonding *bond, int arp_interval)
545{
546 if (arp_interval < 0) {
547 pr_err("%s: Invalid arp_interval value %d not in range 0-%d; rejected.\n",
548 bond->dev->name, arp_interval, INT_MAX);
549 return -EINVAL;
550 }
551 if (BOND_NO_USES_ARP(bond->params.mode)) {
552 pr_info("%s: ARP monitoring cannot be used with ALB/TLB/802.3ad. Only MII monitoring is supported on %s.\n",
553 bond->dev->name, bond->dev->name);
554 return -EINVAL;
555 }
556 pr_info("%s: Setting ARP monitoring interval to %d.\n",
557 bond->dev->name, arp_interval);
558 bond->params.arp_interval = arp_interval;
559 if (arp_interval) {
560 if (bond->params.miimon) {
561 pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring.\n",
562 bond->dev->name, bond->dev->name);
563 bond->params.miimon = 0;
564 }
565 if (!bond->params.arp_targets[0])
566 pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified.\n",
567 bond->dev->name);
568 }
569 if (bond->dev->flags & IFF_UP) {
570 /* If the interface is up, we may need to fire off
571 * the ARP timer. If the interface is down, the
572 * timer will get fired off when the open function
573 * is called.
574 */
575 if (!arp_interval) {
576 if (bond->params.arp_validate)
577 bond->recv_probe = NULL;
578 cancel_delayed_work_sync(&bond->arp_work);
579 } else {
580 /* arp_validate can be set only in active-backup mode */
581 if (bond->params.arp_validate)
582 bond->recv_probe = bond_arp_rcv;
583 cancel_delayed_work_sync(&bond->mii_work);
584 queue_delayed_work(bond->wq, &bond->arp_work, 0);
585 }
586 }
587
588 return 0;
589}
7f28fa10 590
591static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
592 __be32 target,
593 unsigned long last_rx)
594{
595 __be32 *targets = bond->params.arp_targets;
596 struct list_head *iter;
597 struct slave *slave;
598
599 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
600 bond_for_each_slave(bond, slave, iter)
601 slave->target_last_arp_rx[slot] = last_rx;
602 targets[slot] = target;
603 }
604}
605
606static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
607{
608 __be32 *targets = bond->params.arp_targets;
609 int ind;
610
611 if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
612 pr_err("%s: invalid ARP target %pI4 specified for addition\n",
613 bond->dev->name, &target);
614 return -EINVAL;
615 }
616
617 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
618 pr_err("%s: ARP target %pI4 is already present\n",
619 bond->dev->name, &target);
620 return -EINVAL;
621 }
622
623 ind = bond_get_targets_ip(targets, 0); /* first free slot */
624 if (ind == -1) {
625 pr_err("%s: ARP target table is full!\n",
626 bond->dev->name);
627 return -EINVAL;
628 }
629
630 pr_info("%s: adding ARP target %pI4.\n", bond->dev->name, &target);
631
632 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
633
634 return 0;
635}
636
637int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
638{
639 int ret;
640
641 /* not to race with bond_arp_rcv */
642 write_lock_bh(&bond->lock);
643 ret = _bond_option_arp_ip_target_add(bond, target);
644 write_unlock_bh(&bond->lock);
645
646 return ret;
647}
648
649int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
650{
651 __be32 *targets = bond->params.arp_targets;
652 struct list_head *iter;
653 struct slave *slave;
654 unsigned long *targets_rx;
655 int ind, i;
656
657 if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
658 pr_err("%s: invalid ARP target %pI4 specified for removal\n",
659 bond->dev->name, &target);
660 return -EINVAL;
661 }
662
663 ind = bond_get_targets_ip(targets, target);
664 if (ind == -1) {
665 pr_err("%s: unable to remove nonexistent ARP target %pI4.\n",
666 bond->dev->name, &target);
667 return -EINVAL;
668 }
669
670 if (ind == 0 && !targets[1] && bond->params.arp_interval)
671 pr_warn("%s: removing last arp target with arp_interval on\n",
672 bond->dev->name);
673
674 pr_info("%s: removing ARP target %pI4.\n", bond->dev->name,
675 &target);
676
677 /* not to race with bond_arp_rcv */
678 write_lock_bh(&bond->lock);
679
680 bond_for_each_slave(bond, slave, iter) {
681 targets_rx = slave->target_last_arp_rx;
682 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
683 targets_rx[i] = targets_rx[i+1];
684 targets_rx[i] = 0;
685 }
686 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
687 targets[i] = targets[i+1];
688 targets[i] = 0;
689
690 write_unlock_bh(&bond->lock);
691
692 return 0;
693}
694
695int bond_option_arp_ip_targets_set(struct bonding *bond, __be32 *targets,
696 int count)
697{
698 int i, ret = 0;
699
700 /* not to race with bond_arp_rcv */
701 write_lock_bh(&bond->lock);
702
703 /* clear table */
704 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
705 _bond_options_arp_ip_target_set(bond, i, 0, 0);
706
707 if (count == 0 && bond->params.arp_interval)
708 pr_warn("%s: removing last arp target with arp_interval on\n",
709 bond->dev->name);
710
711 for (i = 0; i < count; i++) {
712 ret = _bond_option_arp_ip_target_add(bond, targets[i]);
713 if (ret)
714 break;
715 }
716
717 write_unlock_bh(&bond->lock);
718 return ret;
719}
29c49482 720
721int bond_option_arp_validate_set(struct bonding *bond, int arp_validate)
722{
3243c47b 723 if (bond_parm_tbl_lookup(arp_validate, arp_validate_tbl) < 0) {
724 pr_err("%s: Ignoring invalid arp_validate value %d.\n",
725 bond->dev->name, arp_validate);
726 return -EINVAL;
727 }
728
29c49482 729 if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) {
730 pr_err("%s: arp_validate only supported in active-backup mode.\n",
731 bond->dev->name);
732 return -EINVAL;
733 }
3243c47b 734
29c49482 735 pr_info("%s: setting arp_validate to %s (%d).\n",
736 bond->dev->name, arp_validate_tbl[arp_validate].modename,
737 arp_validate);
738
739 if (bond->dev->flags & IFF_UP) {
740 if (!arp_validate)
741 bond->recv_probe = NULL;
742 else if (bond->params.arp_interval)
743 bond->recv_probe = bond_arp_rcv;
744 }
745 bond->params.arp_validate = arp_validate;
746
747 return 0;
748}
d5c84254 749
750int bond_option_arp_all_targets_set(struct bonding *bond, int arp_all_targets)
751{
3243c47b 752 if (bond_parm_tbl_lookup(arp_all_targets, arp_all_targets_tbl) < 0) {
753 pr_err("%s: Ignoring invalid arp_all_targets value %d.\n",
754 bond->dev->name, arp_all_targets);
755 return -EINVAL;
756 }
757
d5c84254 758 pr_info("%s: setting arp_all_targets to %s (%d).\n",
759 bond->dev->name, arp_all_targets_tbl[arp_all_targets].modename,
760 arp_all_targets);
761
762 bond->params.arp_all_targets = arp_all_targets;
763
764 return 0;
765}
0a98a0d1 766
767int bond_option_primary_set(struct bonding *bond, const char *primary)
768{
769 struct list_head *iter;
770 struct slave *slave;
771 int err = 0;
772
773 block_netpoll_tx();
774 read_lock(&bond->lock);
775 write_lock_bh(&bond->curr_slave_lock);
776
777 if (!USES_PRIMARY(bond->params.mode)) {
778 pr_err("%s: Unable to set primary slave; %s is in mode %d\n",
779 bond->dev->name, bond->dev->name, bond->params.mode);
780 err = -EINVAL;
781 goto out;
782 }
783
784 /* check to see if we are clearing primary */
785 if (!strlen(primary)) {
786 pr_info("%s: Setting primary slave to None.\n",
787 bond->dev->name);
788 bond->primary_slave = NULL;
789 memset(bond->params.primary, 0, sizeof(bond->params.primary));
790 bond_select_active_slave(bond);
791 goto out;
792 }
793
794 bond_for_each_slave(bond, slave, iter) {
795 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
796 pr_info("%s: Setting %s as primary slave.\n",
797 bond->dev->name, slave->dev->name);
798 bond->primary_slave = slave;
799 strcpy(bond->params.primary, slave->dev->name);
800 bond_select_active_slave(bond);
801 goto out;
802 }
803 }
804
805 strncpy(bond->params.primary, primary, IFNAMSIZ);
806 bond->params.primary[IFNAMSIZ - 1] = 0;
807
808 pr_info("%s: Recording %s as primary, but it has not been enslaved to %s yet.\n",
809 bond->dev->name, primary, bond->dev->name);
810
811out:
812 write_unlock_bh(&bond->curr_slave_lock);
813 read_unlock(&bond->lock);
814 unblock_netpoll_tx();
815
816 return err;
817}
8a41ae44 818
819int bond_option_primary_reselect_set(struct bonding *bond, int primary_reselect)
820{
3243c47b 821 if (bond_parm_tbl_lookup(primary_reselect, pri_reselect_tbl) < 0) {
822 pr_err("%s: Ignoring invalid primary_reselect value %d.\n",
823 bond->dev->name, primary_reselect);
824 return -EINVAL;
825 }
826
8a41ae44 827 bond->params.primary_reselect = primary_reselect;
828 pr_info("%s: setting primary_reselect to %s (%d).\n",
829 bond->dev->name, pri_reselect_tbl[primary_reselect].modename,
830 primary_reselect);
831
832 block_netpoll_tx();
833 write_lock_bh(&bond->curr_slave_lock);
834 bond_select_active_slave(bond);
835 write_unlock_bh(&bond->curr_slave_lock);
836 unblock_netpoll_tx();
837
838 return 0;
839}
89901972 840
841int bond_option_fail_over_mac_set(struct bonding *bond, int fail_over_mac)
842{
3243c47b 843 if (bond_parm_tbl_lookup(fail_over_mac, fail_over_mac_tbl) < 0) {
844 pr_err("%s: Ignoring invalid fail_over_mac value %d.\n",
845 bond->dev->name, fail_over_mac);
846 return -EINVAL;
847 }
848
89901972 849 if (bond_has_slaves(bond)) {
850 pr_err("%s: Can't alter fail_over_mac with slaves in bond.\n",
851 bond->dev->name);
852 return -EPERM;
853 }
854
855 bond->params.fail_over_mac = fail_over_mac;
856 pr_info("%s: Setting fail_over_mac to %s (%d).\n",
857 bond->dev->name, fail_over_mac_tbl[fail_over_mac].modename,
858 fail_over_mac);
859
860 return 0;
861}
f70161c6 862
863int bond_option_xmit_hash_policy_set(struct bonding *bond, int xmit_hash_policy)
864{
3243c47b 865 if (bond_parm_tbl_lookup(xmit_hash_policy, xmit_hashtype_tbl) < 0) {
866 pr_err("%s: Ignoring invalid xmit_hash_policy value %d.\n",
867 bond->dev->name, xmit_hash_policy);
868 return -EINVAL;
869 }
870
f70161c6 871 bond->params.xmit_policy = xmit_hash_policy;
872 pr_info("%s: setting xmit hash policy to %s (%d).\n",
873 bond->dev->name,
874 xmit_hashtype_tbl[xmit_hash_policy].modename, xmit_hash_policy);
875
876 return 0;
877}
d8838de7 878
879int bond_option_resend_igmp_set(struct bonding *bond, int resend_igmp)
880{
881 if (resend_igmp < 0 || resend_igmp > 255) {
882 pr_err("%s: Invalid resend_igmp value %d not in range 0-255; rejected.\n",
883 bond->dev->name, resend_igmp);
884 return -EINVAL;
885 }
886
887 bond->params.resend_igmp = resend_igmp;
888 pr_info("%s: Setting resend_igmp to %d.\n",
889 bond->dev->name, resend_igmp);
890
891 return 0;
892}
2c9839c1 893
894int bond_option_num_peer_notif_set(struct bonding *bond, int num_peer_notif)
895{
896 bond->params.num_peer_notif = num_peer_notif;
897 return 0;
898}
1cc0b1e3 899
900int bond_option_all_slaves_active_set(struct bonding *bond,
901 int all_slaves_active)
902{
903 struct list_head *iter;
904 struct slave *slave;
905
906 if (all_slaves_active == bond->params.all_slaves_active)
907 return 0;
908
909 if ((all_slaves_active == 0) || (all_slaves_active == 1)) {
910 bond->params.all_slaves_active = all_slaves_active;
911 } else {
912 pr_info("%s: Ignoring invalid all_slaves_active value %d.\n",
913 bond->dev->name, all_slaves_active);
914 return -EINVAL;
915 }
916
917 bond_for_each_slave(bond, slave, iter) {
918 if (!bond_is_active_slave(slave)) {
919 if (all_slaves_active)
920 slave->inactive = 0;
921 else
922 slave->inactive = 1;
923 }
924 }
925
926 return 0;
927}
7d101008 928
929int bond_option_min_links_set(struct bonding *bond, int min_links)
930{
931 pr_info("%s: Setting min links value to %u\n",
932 bond->dev->name, min_links);
933 bond->params.min_links = min_links;
934
935 return 0;
936}
8d836d09 937
938int bond_option_lp_interval_set(struct bonding *bond, int lp_interval)
939{
940 if (lp_interval <= 0) {
941 pr_err("%s: lp_interval must be between 1 and %d\n",
942 bond->dev->name, INT_MAX);
943 return -EINVAL;
944 }
945
946 bond->params.lp_interval = lp_interval;
947
948 return 0;
949}
c13ab3ff 950
aa59d851 951int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval)
c13ab3ff 952{
aa59d851
NA		 953 bond->params.packets_per_slave = newval->value;
954 if (newval->value > 0) {
809fa972 955 bond->params.reciprocal_packets_per_slave =
aa59d851 956 reciprocal_value(newval->value);
809fa972
HFS		 957 } else {
958 /* reciprocal_packets_per_slave is unused if
959 * packets_per_slave is 0 or 1, just initialize it
960 */
961 bond->params.reciprocal_packets_per_slave =
962 (struct reciprocal_value) { 0 };
963 }
c13ab3ff 964
965 return 0;
966}
998e40bb 967
968int bond_option_lacp_rate_set(struct bonding *bond, int lacp_rate)
969{
3243c47b 970 if (bond_parm_tbl_lookup(lacp_rate, bond_lacp_tbl) < 0) {
971 pr_err("%s: Ignoring invalid LACP rate value %d.\n",
972 bond->dev->name, lacp_rate);
973 return -EINVAL;
974 }
975
998e40bb 976 if (bond->dev->flags & IFF_UP) {
977 pr_err("%s: Unable to update LACP rate because interface is up.\n",
978 bond->dev->name);
979 return -EPERM;
980 }
981
982 if (bond->params.mode != BOND_MODE_8023AD) {
983 pr_err("%s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",
984 bond->dev->name);
985 return -EPERM;
986 }
987
3243c47b 988 bond->params.lacp_fast = lacp_rate;
989 bond_3ad_update_lacp_rate(bond);
990 pr_info("%s: Setting LACP rate to %s (%d).\n",
991 bond->dev->name, bond_lacp_tbl[lacp_rate].modename,
992 lacp_rate);
998e40bb 993
994 return 0;
995}
ec029fac 996
997int bond_option_ad_select_set(struct bonding *bond, int ad_select)
998{
ec029fac 999 if (bond_parm_tbl_lookup(ad_select, ad_select_tbl) < 0) {
1000 pr_err("%s: Ignoring invalid ad_select value %d.\n",
1001 bond->dev->name, ad_select);
1002 return -EINVAL;
1003 }
1004
3243c47b 1005 if (bond->dev->flags & IFF_UP) {
1006 pr_err("%s: Unable to update ad_select because interface is up.\n",
1007 bond->dev->name);
1008 return -EPERM;
1009 }
1010
ec029fac 1011 bond->params.ad_select = ad_select;
1012 pr_info("%s: Setting ad_select to %s (%d).\n",
1013 bond->dev->name, ad_select_tbl[ad_select].modename,
1014 ad_select);
1015
1016 return 0;
1017}
Linux kernel - Deliverables
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