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1/*
2 * drivers/net/bond/bond_options.c - bonding options
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
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#include <linux/errno.h>
13#include <linux/if.h>
14#include <linux/netdevice.h>
15#include <linux/spinlock.h>
16#include <linux/rcupdate.h>
17#include <linux/ctype.h>
18#include <linux/inet.h>
19#include <linux/sched/signal.h>
20
21#include <net/bonding.h>
22
23static int bond_option_active_slave_set(struct bonding *bond,
24 const struct bond_opt_value *newval);
25static int bond_option_miimon_set(struct bonding *bond,
26 const struct bond_opt_value *newval);
27static int bond_option_updelay_set(struct bonding *bond,
28 const struct bond_opt_value *newval);
29static int bond_option_downdelay_set(struct bonding *bond,
30 const struct bond_opt_value *newval);
31static int bond_option_use_carrier_set(struct bonding *bond,
32 const struct bond_opt_value *newval);
33static int bond_option_arp_interval_set(struct bonding *bond,
34 const struct bond_opt_value *newval);
35static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
36static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
37static int bond_option_arp_ip_targets_set(struct bonding *bond,
38 const struct bond_opt_value *newval);
39static int bond_option_arp_validate_set(struct bonding *bond,
40 const struct bond_opt_value *newval);
41static int bond_option_arp_all_targets_set(struct bonding *bond,
42 const struct bond_opt_value *newval);
43static int bond_option_primary_set(struct bonding *bond,
44 const struct bond_opt_value *newval);
45static int bond_option_primary_reselect_set(struct bonding *bond,
46 const struct bond_opt_value *newval);
47static int bond_option_fail_over_mac_set(struct bonding *bond,
48 const struct bond_opt_value *newval);
49static int bond_option_xmit_hash_policy_set(struct bonding *bond,
50 const struct bond_opt_value *newval);
51static int bond_option_resend_igmp_set(struct bonding *bond,
52 const struct bond_opt_value *newval);
53static int bond_option_num_peer_notif_set(struct bonding *bond,
54 const struct bond_opt_value *newval);
55static int bond_option_all_slaves_active_set(struct bonding *bond,
56 const struct bond_opt_value *newval);
57static int bond_option_min_links_set(struct bonding *bond,
58 const struct bond_opt_value *newval);
59static int bond_option_lp_interval_set(struct bonding *bond,
60 const struct bond_opt_value *newval);
61static int bond_option_pps_set(struct bonding *bond,
62 const struct bond_opt_value *newval);
63static int bond_option_lacp_rate_set(struct bonding *bond,
64 const struct bond_opt_value *newval);
65static int bond_option_ad_select_set(struct bonding *bond,
66 const struct bond_opt_value *newval);
67static int bond_option_queue_id_set(struct bonding *bond,
68 const struct bond_opt_value *newval);
69static int bond_option_mode_set(struct bonding *bond,
70 const struct bond_opt_value *newval);
71static int bond_option_slaves_set(struct bonding *bond,
72 const struct bond_opt_value *newval);
73static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
74 const struct bond_opt_value *newval);
75static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
76 const struct bond_opt_value *newval);
77static int bond_option_ad_actor_system_set(struct bonding *bond,
78 const struct bond_opt_value *newval);
79static int bond_option_ad_user_port_key_set(struct bonding *bond,
80 const struct bond_opt_value *newval);
81
82
83static const struct bond_opt_value bond_mode_tbl[] = {
84 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
85 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
86 { "balance-xor", BOND_MODE_XOR, 0},
87 { "broadcast", BOND_MODE_BROADCAST, 0},
88 { "802.3ad", BOND_MODE_8023AD, 0},
89 { "balance-tlb", BOND_MODE_TLB, 0},
90 { "balance-alb", BOND_MODE_ALB, 0},
91 { NULL, -1, 0},
92};
93
94static const struct bond_opt_value bond_pps_tbl[] = {
95 { "default", 1, BOND_VALFLAG_DEFAULT},
96 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
97 { NULL, -1, 0},
98};
99
100static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
101 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
102 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
103 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
104 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
105 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
106 { NULL, -1, 0},
107};
108
109static const struct bond_opt_value bond_arp_validate_tbl[] = {
110 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
111 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
112 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
113 { "all", BOND_ARP_VALIDATE_ALL, 0},
114 { "filter", BOND_ARP_FILTER, 0},
115 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
116 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
117 { NULL, -1, 0},
118};
119
120static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
121 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
122 { "all", BOND_ARP_TARGETS_ALL, 0},
123 { NULL, -1, 0},
124};
125
126static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
127 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
128 { "active", BOND_FOM_ACTIVE, 0},
129 { "follow", BOND_FOM_FOLLOW, 0},
130 { NULL, -1, 0},
131};
132
133static const struct bond_opt_value bond_intmax_tbl[] = {
134 { "off", 0, BOND_VALFLAG_DEFAULT},
135 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
136 { NULL, -1, 0}
137};
138
139static const struct bond_opt_value bond_lacp_rate_tbl[] = {
140 { "slow", AD_LACP_SLOW, 0},
141 { "fast", AD_LACP_FAST, 0},
142 { NULL, -1, 0},
143};
144
145static const struct bond_opt_value bond_ad_select_tbl[] = {
146 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
147 { "bandwidth", BOND_AD_BANDWIDTH, 0},
148 { "count", BOND_AD_COUNT, 0},
149 { NULL, -1, 0},
150};
151
152static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
153 { "off", 0, 0},
154 { "maxval", 255, BOND_VALFLAG_MAX},
155 { "default", 1, BOND_VALFLAG_DEFAULT},
156 { NULL, -1, 0}
157};
158
159static const struct bond_opt_value bond_primary_reselect_tbl[] = {
160 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
161 { "better", BOND_PRI_RESELECT_BETTER, 0},
162 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
163 { NULL, -1},
164};
165
166static const struct bond_opt_value bond_use_carrier_tbl[] = {
167 { "off", 0, 0},
168 { "on", 1, BOND_VALFLAG_DEFAULT},
169 { NULL, -1, 0}
170};
171
172static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
173 { "off", 0, BOND_VALFLAG_DEFAULT},
174 { "on", 1, 0},
175 { NULL, -1, 0}
176};
177
178static const struct bond_opt_value bond_resend_igmp_tbl[] = {
179 { "off", 0, 0},
180 { "maxval", 255, BOND_VALFLAG_MAX},
181 { "default", 1, BOND_VALFLAG_DEFAULT},
182 { NULL, -1, 0}
183};
184
185static const struct bond_opt_value bond_lp_interval_tbl[] = {
186 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
187 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
188 { NULL, -1, 0},
189};
190
191static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
192 { "off", 0, 0},
193 { "on", 1, BOND_VALFLAG_DEFAULT},
194 { NULL, -1, 0}
195};
196
197static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
198 { "minval", 1, BOND_VALFLAG_MIN},
199 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
200 { NULL, -1, 0},
201};
202
203static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
204 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
205 { "maxval", 1023, BOND_VALFLAG_MAX},
206 { NULL, -1, 0},
207};
208
209static const struct bond_option bond_opts[BOND_OPT_LAST] = {
210 [BOND_OPT_MODE] = {
211 .id = BOND_OPT_MODE,
212 .name = "mode",
213 .desc = "bond device mode",
214 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
215 .values = bond_mode_tbl,
216 .set = bond_option_mode_set
217 },
218 [BOND_OPT_PACKETS_PER_SLAVE] = {
219 .id = BOND_OPT_PACKETS_PER_SLAVE,
220 .name = "packets_per_slave",
221 .desc = "Packets to send per slave in RR mode",
222 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
223 .values = bond_pps_tbl,
224 .set = bond_option_pps_set
225 },
226 [BOND_OPT_XMIT_HASH] = {
227 .id = BOND_OPT_XMIT_HASH,
228 .name = "xmit_hash_policy",
229 .desc = "balance-xor, 802.3ad, and tlb hashing method",
230 .values = bond_xmit_hashtype_tbl,
231 .set = bond_option_xmit_hash_policy_set
232 },
233 [BOND_OPT_ARP_VALIDATE] = {
234 .id = BOND_OPT_ARP_VALIDATE,
235 .name = "arp_validate",
236 .desc = "validate src/dst of ARP probes",
237 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
238 BIT(BOND_MODE_ALB),
239 .values = bond_arp_validate_tbl,
240 .set = bond_option_arp_validate_set
241 },
242 [BOND_OPT_ARP_ALL_TARGETS] = {
243 .id = BOND_OPT_ARP_ALL_TARGETS,
244 .name = "arp_all_targets",
245 .desc = "fail on any/all arp targets timeout",
246 .values = bond_arp_all_targets_tbl,
247 .set = bond_option_arp_all_targets_set
248 },
249 [BOND_OPT_FAIL_OVER_MAC] = {
250 .id = BOND_OPT_FAIL_OVER_MAC,
251 .name = "fail_over_mac",
252 .desc = "For active-backup, do not set all slaves to the same MAC",
253 .flags = BOND_OPTFLAG_NOSLAVES,
254 .values = bond_fail_over_mac_tbl,
255 .set = bond_option_fail_over_mac_set
256 },
257 [BOND_OPT_ARP_INTERVAL] = {
258 .id = BOND_OPT_ARP_INTERVAL,
259 .name = "arp_interval",
260 .desc = "arp interval in milliseconds",
261 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
262 BIT(BOND_MODE_ALB),
263 .values = bond_intmax_tbl,
264 .set = bond_option_arp_interval_set
265 },
266 [BOND_OPT_ARP_TARGETS] = {
267 .id = BOND_OPT_ARP_TARGETS,
268 .name = "arp_ip_target",
269 .desc = "arp targets in n.n.n.n form",
270 .flags = BOND_OPTFLAG_RAWVAL,
271 .set = bond_option_arp_ip_targets_set
272 },
273 [BOND_OPT_DOWNDELAY] = {
274 .id = BOND_OPT_DOWNDELAY,
275 .name = "downdelay",
276 .desc = "Delay before considering link down, in milliseconds",
277 .values = bond_intmax_tbl,
278 .set = bond_option_downdelay_set
279 },
280 [BOND_OPT_UPDELAY] = {
281 .id = BOND_OPT_UPDELAY,
282 .name = "updelay",
283 .desc = "Delay before considering link up, in milliseconds",
284 .values = bond_intmax_tbl,
285 .set = bond_option_updelay_set
286 },
287 [BOND_OPT_LACP_RATE] = {
288 .id = BOND_OPT_LACP_RATE,
289 .name = "lacp_rate",
290 .desc = "LACPDU tx rate to request from 802.3ad partner",
291 .flags = BOND_OPTFLAG_IFDOWN,
292 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
293 .values = bond_lacp_rate_tbl,
294 .set = bond_option_lacp_rate_set
295 },
296 [BOND_OPT_MINLINKS] = {
297 .id = BOND_OPT_MINLINKS,
298 .name = "min_links",
299 .desc = "Minimum number of available links before turning on carrier",
300 .values = bond_intmax_tbl,
301 .set = bond_option_min_links_set
302 },
303 [BOND_OPT_AD_SELECT] = {
304 .id = BOND_OPT_AD_SELECT,
305 .name = "ad_select",
306 .desc = "803.ad aggregation selection logic",
307 .flags = BOND_OPTFLAG_IFDOWN,
308 .values = bond_ad_select_tbl,
309 .set = bond_option_ad_select_set
310 },
311 [BOND_OPT_NUM_PEER_NOTIF] = {
312 .id = BOND_OPT_NUM_PEER_NOTIF,
313 .name = "num_unsol_na",
314 .desc = "Number of peer notifications to send on failover event",
315 .values = bond_num_peer_notif_tbl,
316 .set = bond_option_num_peer_notif_set
317 },
318 [BOND_OPT_MIIMON] = {
319 .id = BOND_OPT_MIIMON,
320 .name = "miimon",
321 .desc = "Link check interval in milliseconds",
322 .values = bond_intmax_tbl,
323 .set = bond_option_miimon_set
324 },
325 [BOND_OPT_PRIMARY] = {
326 .id = BOND_OPT_PRIMARY,
327 .name = "primary",
328 .desc = "Primary network device to use",
329 .flags = BOND_OPTFLAG_RAWVAL,
330 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
331 BIT(BOND_MODE_TLB) |
332 BIT(BOND_MODE_ALB)),
333 .set = bond_option_primary_set
334 },
335 [BOND_OPT_PRIMARY_RESELECT] = {
336 .id = BOND_OPT_PRIMARY_RESELECT,
337 .name = "primary_reselect",
338 .desc = "Reselect primary slave once it comes up",
339 .values = bond_primary_reselect_tbl,
340 .set = bond_option_primary_reselect_set
341 },
342 [BOND_OPT_USE_CARRIER] = {
343 .id = BOND_OPT_USE_CARRIER,
344 .name = "use_carrier",
345 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
346 .values = bond_use_carrier_tbl,
347 .set = bond_option_use_carrier_set
348 },
349 [BOND_OPT_ACTIVE_SLAVE] = {
350 .id = BOND_OPT_ACTIVE_SLAVE,
351 .name = "active_slave",
352 .desc = "Currently active slave",
353 .flags = BOND_OPTFLAG_RAWVAL,
354 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
355 BIT(BOND_MODE_TLB) |
356 BIT(BOND_MODE_ALB)),
357 .set = bond_option_active_slave_set
358 },
359 [BOND_OPT_QUEUE_ID] = {
360 .id = BOND_OPT_QUEUE_ID,
361 .name = "queue_id",
362 .desc = "Set queue id of a slave",
363 .flags = BOND_OPTFLAG_RAWVAL,
364 .set = bond_option_queue_id_set
365 },
366 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
367 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
368 .name = "all_slaves_active",
369 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
370 .values = bond_all_slaves_active_tbl,
371 .set = bond_option_all_slaves_active_set
372 },
373 [BOND_OPT_RESEND_IGMP] = {
374 .id = BOND_OPT_RESEND_IGMP,
375 .name = "resend_igmp",
376 .desc = "Number of IGMP membership reports to send on link failure",
377 .values = bond_resend_igmp_tbl,
378 .set = bond_option_resend_igmp_set
379 },
380 [BOND_OPT_LP_INTERVAL] = {
381 .id = BOND_OPT_LP_INTERVAL,
382 .name = "lp_interval",
383 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
384 .values = bond_lp_interval_tbl,
385 .set = bond_option_lp_interval_set
386 },
387 [BOND_OPT_SLAVES] = {
388 .id = BOND_OPT_SLAVES,
389 .name = "slaves",
390 .desc = "Slave membership management",
391 .flags = BOND_OPTFLAG_RAWVAL,
392 .set = bond_option_slaves_set
393 },
394 [BOND_OPT_TLB_DYNAMIC_LB] = {
395 .id = BOND_OPT_TLB_DYNAMIC_LB,
396 .name = "tlb_dynamic_lb",
397 .desc = "Enable dynamic flow shuffling",
398 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB)),
399 .values = bond_tlb_dynamic_lb_tbl,
400 .flags = BOND_OPTFLAG_IFDOWN,
401 .set = bond_option_tlb_dynamic_lb_set,
402 },
403 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
404 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
405 .name = "ad_actor_sys_prio",
406 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
407 .values = bond_ad_actor_sys_prio_tbl,
408 .set = bond_option_ad_actor_sys_prio_set,
409 },
410 [BOND_OPT_AD_ACTOR_SYSTEM] = {
411 .id = BOND_OPT_AD_ACTOR_SYSTEM,
412 .name = "ad_actor_system",
413 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
414 .flags = BOND_OPTFLAG_RAWVAL,
415 .set = bond_option_ad_actor_system_set,
416 },
417 [BOND_OPT_AD_USER_PORT_KEY] = {
418 .id = BOND_OPT_AD_USER_PORT_KEY,
419 .name = "ad_user_port_key",
420 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
421 .flags = BOND_OPTFLAG_IFDOWN,
422 .values = bond_ad_user_port_key_tbl,
423 .set = bond_option_ad_user_port_key_set,
424 },
425 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
426 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
427 .name = "num_grat_arp",
428 .desc = "Number of peer notifications to send on failover event",
429 .values = bond_num_peer_notif_tbl,
430 .set = bond_option_num_peer_notif_set
431 }
432};
433
434/* Searches for an option by name */
435const struct bond_option *bond_opt_get_by_name(const char *name)
436{
437 const struct bond_option *opt;
438 int option;
439
440 for (option = 0; option < BOND_OPT_LAST; option++) {
441 opt = bond_opt_get(option);
442 if (opt && !strcmp(opt->name, name))
443 return opt;
444 }
445
446 return NULL;
447}
448
449/* Searches for a value in opt's values[] table */
450const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
451{
452 const struct bond_option *opt;
453 int i;
454
455 opt = bond_opt_get(option);
456 if (WARN_ON(!opt))
457 return NULL;
458 for (i = 0; opt->values && opt->values[i].string; i++)
459 if (opt->values[i].value == val)
460 return &opt->values[i];
461
462 return NULL;
463}
464
465/* Searches for a value in opt's values[] table which matches the flagmask */
466static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
467 u32 flagmask)
468{
469 int i;
470
471 for (i = 0; opt->values && opt->values[i].string; i++)
472 if (opt->values[i].flags & flagmask)
473 return &opt->values[i];
474
475 return NULL;
476}
477
478/* If maxval is missing then there's no range to check. In case minval is
479 * missing then it's considered to be 0.
480 */
481static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
482{
483 const struct bond_opt_value *minval, *maxval;
484
485 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
486 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
487 if (!maxval || (minval && val < minval->value) || val > maxval->value)
488 return false;
489
490 return true;
491}
492
493/**
494 * bond_opt_parse - parse option value
495 * @opt: the option to parse against
496 * @val: value to parse
497 *
498 * This function tries to extract the value from @val and check if it's
499 * a possible match for the option and returns NULL if a match isn't found,
500 * or the struct_opt_value that matched. It also strips the new line from
501 * @val->string if it's present.
502 */
503const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
504 struct bond_opt_value *val)
505{
506 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
507 const struct bond_opt_value *tbl;
508 const struct bond_opt_value *ret = NULL;
509 bool checkval;
510 int i, rv;
511
512 /* No parsing if the option wants a raw val */
513 if (opt->flags & BOND_OPTFLAG_RAWVAL)
514 return val;
515
516 tbl = opt->values;
517 if (!tbl)
518 goto out;
519
520 /* ULLONG_MAX is used to bypass string processing */
521 checkval = val->value != ULLONG_MAX;
522 if (!checkval) {
523 if (!val->string)
524 goto out;
525 p = strchr(val->string, '\n');
526 if (p)
527 *p = '\0';
528 for (p = val->string; *p; p++)
529 if (!(isdigit(*p) || isspace(*p)))
530 break;
531 /* The following code extracts the string to match or the value
532 * and sets checkval appropriately
533 */
534 if (*p) {
535 rv = sscanf(val->string, "%32s", valstr);
536 } else {
537 rv = sscanf(val->string, "%llu", &val->value);
538 checkval = true;
539 }
540 if (!rv)
541 goto out;
542 }
543
544 for (i = 0; tbl[i].string; i++) {
545 /* Check for exact match */
546 if (checkval) {
547 if (val->value == tbl[i].value)
548 ret = &tbl[i];
549 } else {
550 if (!strcmp(valstr, "default") &&
551 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
552 ret = &tbl[i];
553
554 if (!strcmp(valstr, tbl[i].string))
555 ret = &tbl[i];
556 }
557 /* Found an exact match */
558 if (ret)
559 goto out;
560 }
561 /* Possible range match */
562 if (checkval && bond_opt_check_range(opt, val->value))
563 ret = val;
564out:
565 return ret;
566}
567
568/* Check opt's dependencies against bond mode and currently set options */
569static int bond_opt_check_deps(struct bonding *bond,
570 const struct bond_option *opt)
571{
572 struct bond_params *params = &bond->params;
573
574 if (test_bit(params->mode, &opt->unsuppmodes))
575 return -EACCES;
576 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
577 return -ENOTEMPTY;
578 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
579 return -EBUSY;
580
581 return 0;
582}
583
584static void bond_opt_dep_print(struct bonding *bond,
585 const struct bond_option *opt)
586{
587 const struct bond_opt_value *modeval;
588 struct bond_params *params;
589
590 params = &bond->params;
591 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
592 if (test_bit(params->mode, &opt->unsuppmodes))
593 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
594 opt->name, modeval->string, modeval->value);
595}
596
597static void bond_opt_error_interpret(struct bonding *bond,
598 const struct bond_option *opt,
599 int error, const struct bond_opt_value *val)
600{
601 const struct bond_opt_value *minval, *maxval;
602 char *p;
603
604 switch (error) {
605 case -EINVAL:
606 if (val) {
607 if (val->string) {
608 /* sometimes RAWVAL opts may have new lines */
609 p = strchr(val->string, '\n');
610 if (p)
611 *p = '\0';
612 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
613 opt->name, val->string);
614 } else {
615 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
616 opt->name, val->value);
617 }
618 }
619 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
620 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
621 if (!maxval)
622 break;
623 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
624 opt->name, minval ? minval->value : 0, maxval->value);
625 break;
626 case -EACCES:
627 bond_opt_dep_print(bond, opt);
628 break;
629 case -ENOTEMPTY:
630 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
631 opt->name);
632 break;
633 case -EBUSY:
634 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
635 opt->name);
636 break;
637 default:
638 break;
639 }
640}
641
642/**
643 * __bond_opt_set - set a bonding option
644 * @bond: target bond device
645 * @option: option to set
646 * @val: value to set it to
647 *
648 * This function is used to change the bond's option value, it can be
649 * used for both enabling/changing an option and for disabling it. RTNL lock
650 * must be obtained before calling this function.
651 */
652int __bond_opt_set(struct bonding *bond,
653 unsigned int option, struct bond_opt_value *val)
654{
655 const struct bond_opt_value *retval = NULL;
656 const struct bond_option *opt;
657 int ret = -ENOENT;
658
659 ASSERT_RTNL();
660
661 opt = bond_opt_get(option);
662 if (WARN_ON(!val) || WARN_ON(!opt))
663 goto out;
664 ret = bond_opt_check_deps(bond, opt);
665 if (ret)
666 goto out;
667 retval = bond_opt_parse(opt, val);
668 if (!retval) {
669 ret = -EINVAL;
670 goto out;
671 }
672 ret = opt->set(bond, retval);
673out:
674 if (ret)
675 bond_opt_error_interpret(bond, opt, ret, val);
676
677 return ret;
678}
679/**
680 * __bond_opt_set_notify - set a bonding option
681 * @bond: target bond device
682 * @option: option to set
683 * @val: value to set it to
684 *
685 * This function is used to change the bond's option value and trigger
686 * a notification to user sapce. It can be used for both enabling/changing
687 * an option and for disabling it. RTNL lock must be obtained before calling
688 * this function.
689 */
690int __bond_opt_set_notify(struct bonding *bond,
691 unsigned int option, struct bond_opt_value *val)
692{
693 int ret = -ENOENT;
694
695 ASSERT_RTNL();
696
697 ret = __bond_opt_set(bond, option, val);
698
699 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
700 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
701
702 return ret;
703}
704
705/**
706 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
707 * @bond: target bond device
708 * @option: option to set
709 * @buf: value to set it to
710 *
711 * This function tries to acquire RTNL without blocking and if successful
712 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
713 */
714int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
715{
716 struct bond_opt_value optval;
717 int ret;
718
719 if (!rtnl_trylock())
720 return restart_syscall();
721 bond_opt_initstr(&optval, buf);
722 ret = __bond_opt_set_notify(bond, option, &optval);
723 rtnl_unlock();
724
725 return ret;
726}
727
728/**
729 * bond_opt_get - get a pointer to an option
730 * @option: option for which to return a pointer
731 *
732 * This function checks if option is valid and if so returns a pointer
733 * to its entry in the bond_opts[] option array.
734 */
735const struct bond_option *bond_opt_get(unsigned int option)
736{
737 if (!BOND_OPT_VALID(option))
738 return NULL;
739
740 return &bond_opts[option];
741}
742
743static int bond_option_mode_set(struct bonding *bond,
744 const struct bond_opt_value *newval)
745{
746 if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) {
747 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
748 newval->string);
749 /* disable arp monitoring */
750 bond->params.arp_interval = 0;
751 /* set miimon to default value */
752 bond->params.miimon = BOND_DEFAULT_MIIMON;
753 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n",
754 bond->params.miimon);
755 }
756
757 if (newval->value == BOND_MODE_ALB)
758 bond->params.tlb_dynamic_lb = 1;
759
760 /* don't cache arp_validate between modes */
761 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
762 bond->params.mode = newval->value;
763
764 return 0;
765}
766
767static int bond_option_active_slave_set(struct bonding *bond,
768 const struct bond_opt_value *newval)
769{
770 char ifname[IFNAMSIZ] = { 0, };
771 struct net_device *slave_dev;
772 int ret = 0;
773
774 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
775 if (!strlen(ifname) || newval->string[0] == '\n') {
776 slave_dev = NULL;
777 } else {
778 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
779 if (!slave_dev)
780 return -ENODEV;
781 }
782
783 if (slave_dev) {
784 if (!netif_is_bond_slave(slave_dev)) {
785 netdev_err(bond->dev, "Device %s is not bonding slave\n",
786 slave_dev->name);
787 return -EINVAL;
788 }
789
790 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
791 netdev_err(bond->dev, "Device %s is not our slave\n",
792 slave_dev->name);
793 return -EINVAL;
794 }
795 }
796
797 block_netpoll_tx();
798 /* check to see if we are clearing active */
799 if (!slave_dev) {
800 netdev_dbg(bond->dev, "Clearing current active slave\n");
801 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
802 bond_select_active_slave(bond);
803 } else {
804 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
805 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
806
807 BUG_ON(!new_active);
808
809 if (new_active == old_active) {
810 /* do nothing */
811 netdev_dbg(bond->dev, "%s is already the current active slave\n",
812 new_active->dev->name);
813 } else {
814 if (old_active && (new_active->link == BOND_LINK_UP) &&
815 bond_slave_is_up(new_active)) {
816 netdev_dbg(bond->dev, "Setting %s as active slave\n",
817 new_active->dev->name);
818 bond_change_active_slave(bond, new_active);
819 } else {
820 netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n",
821 new_active->dev->name,
822 new_active->dev->name);
823 ret = -EINVAL;
824 }
825 }
826 }
827 unblock_netpoll_tx();
828
829 return ret;
830}
831
832/* There are two tricky bits here. First, if MII monitoring is activated, then
833 * we must disable ARP monitoring. Second, if the timer isn't running, we must
834 * start it.
835 */
836static int bond_option_miimon_set(struct bonding *bond,
837 const struct bond_opt_value *newval)
838{
839 netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n",
840 newval->value);
841 bond->params.miimon = newval->value;
842 if (bond->params.updelay)
843 netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
844 bond->params.updelay * bond->params.miimon);
845 if (bond->params.downdelay)
846 netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
847 bond->params.downdelay * bond->params.miimon);
848 if (newval->value && bond->params.arp_interval) {
849 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
850 bond->params.arp_interval = 0;
851 if (bond->params.arp_validate)
852 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
853 }
854 if (bond->dev->flags & IFF_UP) {
855 /* If the interface is up, we may need to fire off
856 * the MII timer. If the interface is down, the
857 * timer will get fired off when the open function
858 * is called.
859 */
860 if (!newval->value) {
861 cancel_delayed_work_sync(&bond->mii_work);
862 } else {
863 cancel_delayed_work_sync(&bond->arp_work);
864 queue_delayed_work(bond->wq, &bond->mii_work, 0);
865 }
866 }
867
868 return 0;
869}
870
871/* Set up and down delays. These must be multiples of the
872 * MII monitoring value, and are stored internally as the multiplier.
873 * Thus, we must translate to MS for the real world.
874 */
875static int bond_option_updelay_set(struct bonding *bond,
876 const struct bond_opt_value *newval)
877{
878 int value = newval->value;
879
880 if (!bond->params.miimon) {
881 netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n");
882 return -EPERM;
883 }
884 if ((value % bond->params.miimon) != 0) {
885 netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
886 value, bond->params.miimon,
887 (value / bond->params.miimon) *
888 bond->params.miimon);
889 }
890 bond->params.updelay = value / bond->params.miimon;
891 netdev_dbg(bond->dev, "Setting up delay to %d\n",
892 bond->params.updelay * bond->params.miimon);
893
894 return 0;
895}
896
897static int bond_option_downdelay_set(struct bonding *bond,
898 const struct bond_opt_value *newval)
899{
900 int value = newval->value;
901
902 if (!bond->params.miimon) {
903 netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n");
904 return -EPERM;
905 }
906 if ((value % bond->params.miimon) != 0) {
907 netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
908 value, bond->params.miimon,
909 (value / bond->params.miimon) *
910 bond->params.miimon);
911 }
912 bond->params.downdelay = value / bond->params.miimon;
913 netdev_dbg(bond->dev, "Setting down delay to %d\n",
914 bond->params.downdelay * bond->params.miimon);
915
916 return 0;
917}
918
919static int bond_option_use_carrier_set(struct bonding *bond,
920 const struct bond_opt_value *newval)
921{
922 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n",
923 newval->value);
924 bond->params.use_carrier = newval->value;
925
926 return 0;
927}
928
929/* There are two tricky bits here. First, if ARP monitoring is activated, then
930 * we must disable MII monitoring. Second, if the ARP timer isn't running,
931 * we must start it.
932 */
933static int bond_option_arp_interval_set(struct bonding *bond,
934 const struct bond_opt_value *newval)
935{
936 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n",
937 newval->value);
938 bond->params.arp_interval = newval->value;
939 if (newval->value) {
940 if (bond->params.miimon) {
941 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
942 bond->params.miimon = 0;
943 }
944 if (!bond->params.arp_targets[0])
945 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
946 }
947 if (bond->dev->flags & IFF_UP) {
948 /* If the interface is up, we may need to fire off
949 * the ARP timer. If the interface is down, the
950 * timer will get fired off when the open function
951 * is called.
952 */
953 if (!newval->value) {
954 if (bond->params.arp_validate)
955 bond->recv_probe = NULL;
956 cancel_delayed_work_sync(&bond->arp_work);
957 } else {
958 /* arp_validate can be set only in active-backup mode */
959 bond->recv_probe = bond_arp_rcv;
960 cancel_delayed_work_sync(&bond->mii_work);
961 queue_delayed_work(bond->wq, &bond->arp_work, 0);
962 }
963 }
964
965 return 0;
966}
967
968static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
969 __be32 target,
970 unsigned long last_rx)
971{
972 __be32 *targets = bond->params.arp_targets;
973 struct list_head *iter;
974 struct slave *slave;
975
976 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
977 bond_for_each_slave(bond, slave, iter)
978 slave->target_last_arp_rx[slot] = last_rx;
979 targets[slot] = target;
980 }
981}
982
983static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
984{
985 __be32 *targets = bond->params.arp_targets;
986 int ind;
987
988 if (!bond_is_ip_target_ok(target)) {
989 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
990 &target);
991 return -EINVAL;
992 }
993
994 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
995 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
996 &target);
997 return -EINVAL;
998 }
999
1000 ind = bond_get_targets_ip(targets, 0); /* first free slot */
1001 if (ind == -1) {
1002 netdev_err(bond->dev, "ARP target table is full!\n");
1003 return -EINVAL;
1004 }
1005
1006 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
1007
1008 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
1009
1010 return 0;
1011}
1012
1013static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1014{
1015 return _bond_option_arp_ip_target_add(bond, target);
1016}
1017
1018static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
1019{
1020 __be32 *targets = bond->params.arp_targets;
1021 struct list_head *iter;
1022 struct slave *slave;
1023 unsigned long *targets_rx;
1024 int ind, i;
1025
1026 if (!bond_is_ip_target_ok(target)) {
1027 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1028 &target);
1029 return -EINVAL;
1030 }
1031
1032 ind = bond_get_targets_ip(targets, target);
1033 if (ind == -1) {
1034 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1035 &target);
1036 return -EINVAL;
1037 }
1038
1039 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1040 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1041
1042 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
1043
1044 bond_for_each_slave(bond, slave, iter) {
1045 targets_rx = slave->target_last_arp_rx;
1046 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1047 targets_rx[i] = targets_rx[i+1];
1048 targets_rx[i] = 0;
1049 }
1050 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1051 targets[i] = targets[i+1];
1052 targets[i] = 0;
1053
1054 return 0;
1055}
1056
1057void bond_option_arp_ip_targets_clear(struct bonding *bond)
1058{
1059 int i;
1060
1061 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1062 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1063}
1064
1065static int bond_option_arp_ip_targets_set(struct bonding *bond,
1066 const struct bond_opt_value *newval)
1067{
1068 int ret = -EPERM;
1069 __be32 target;
1070
1071 if (newval->string) {
1072 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
1073 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1074 &target);
1075 return ret;
1076 }
1077 if (newval->string[0] == '+')
1078 ret = bond_option_arp_ip_target_add(bond, target);
1079 else if (newval->string[0] == '-')
1080 ret = bond_option_arp_ip_target_rem(bond, target);
1081 else
1082 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1083 } else {
1084 target = newval->value;
1085 ret = bond_option_arp_ip_target_add(bond, target);
1086 }
1087
1088 return ret;
1089}
1090
1091static int bond_option_arp_validate_set(struct bonding *bond,
1092 const struct bond_opt_value *newval)
1093{
1094 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n",
1095 newval->string, newval->value);
1096
1097 if (bond->dev->flags & IFF_UP) {
1098 if (!newval->value)
1099 bond->recv_probe = NULL;
1100 else if (bond->params.arp_interval)
1101 bond->recv_probe = bond_arp_rcv;
1102 }
1103 bond->params.arp_validate = newval->value;
1104
1105 return 0;
1106}
1107
1108static int bond_option_arp_all_targets_set(struct bonding *bond,
1109 const struct bond_opt_value *newval)
1110{
1111 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1112 newval->string, newval->value);
1113 bond->params.arp_all_targets = newval->value;
1114
1115 return 0;
1116}
1117
1118static int bond_option_primary_set(struct bonding *bond,
1119 const struct bond_opt_value *newval)
1120{
1121 char *p, *primary = newval->string;
1122 struct list_head *iter;
1123 struct slave *slave;
1124
1125 block_netpoll_tx();
1126
1127 p = strchr(primary, '\n');
1128 if (p)
1129 *p = '\0';
1130 /* check to see if we are clearing primary */
1131 if (!strlen(primary)) {
1132 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1133 RCU_INIT_POINTER(bond->primary_slave, NULL);
1134 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1135 bond_select_active_slave(bond);
1136 goto out;
1137 }
1138
1139 bond_for_each_slave(bond, slave, iter) {
1140 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1141 netdev_dbg(bond->dev, "Setting %s as primary slave\n",
1142 slave->dev->name);
1143 rcu_assign_pointer(bond->primary_slave, slave);
1144 strcpy(bond->params.primary, slave->dev->name);
1145 bond_select_active_slave(bond);
1146 goto out;
1147 }
1148 }
1149
1150 if (rtnl_dereference(bond->primary_slave)) {
1151 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1152 RCU_INIT_POINTER(bond->primary_slave, NULL);
1153 bond_select_active_slave(bond);
1154 }
1155 strncpy(bond->params.primary, primary, IFNAMSIZ);
1156 bond->params.primary[IFNAMSIZ - 1] = 0;
1157
1158 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n",
1159 primary, bond->dev->name);
1160
1161out:
1162 unblock_netpoll_tx();
1163
1164 return 0;
1165}
1166
1167static int bond_option_primary_reselect_set(struct bonding *bond,
1168 const struct bond_opt_value *newval)
1169{
1170 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1171 newval->string, newval->value);
1172 bond->params.primary_reselect = newval->value;
1173
1174 block_netpoll_tx();
1175 bond_select_active_slave(bond);
1176 unblock_netpoll_tx();
1177
1178 return 0;
1179}
1180
1181static int bond_option_fail_over_mac_set(struct bonding *bond,
1182 const struct bond_opt_value *newval)
1183{
1184 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1185 newval->string, newval->value);
1186 bond->params.fail_over_mac = newval->value;
1187
1188 return 0;
1189}
1190
1191static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1192 const struct bond_opt_value *newval)
1193{
1194 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1195 newval->string, newval->value);
1196 bond->params.xmit_policy = newval->value;
1197
1198 return 0;
1199}
1200
1201static int bond_option_resend_igmp_set(struct bonding *bond,
1202 const struct bond_opt_value *newval)
1203{
1204 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n",
1205 newval->value);
1206 bond->params.resend_igmp = newval->value;
1207
1208 return 0;
1209}
1210
1211static int bond_option_num_peer_notif_set(struct bonding *bond,
1212 const struct bond_opt_value *newval)
1213{
1214 bond->params.num_peer_notif = newval->value;
1215
1216 return 0;
1217}
1218
1219static int bond_option_all_slaves_active_set(struct bonding *bond,
1220 const struct bond_opt_value *newval)
1221{
1222 struct list_head *iter;
1223 struct slave *slave;
1224
1225 if (newval->value == bond->params.all_slaves_active)
1226 return 0;
1227 bond->params.all_slaves_active = newval->value;
1228 bond_for_each_slave(bond, slave, iter) {
1229 if (!bond_is_active_slave(slave)) {
1230 if (newval->value)
1231 slave->inactive = 0;
1232 else
1233 slave->inactive = 1;
1234 }
1235 }
1236
1237 return 0;
1238}
1239
1240static int bond_option_min_links_set(struct bonding *bond,
1241 const struct bond_opt_value *newval)
1242{
1243 netdev_dbg(bond->dev, "Setting min links value to %llu\n",
1244 newval->value);
1245 bond->params.min_links = newval->value;
1246 bond_set_carrier(bond);
1247
1248 return 0;
1249}
1250
1251static int bond_option_lp_interval_set(struct bonding *bond,
1252 const struct bond_opt_value *newval)
1253{
1254 bond->params.lp_interval = newval->value;
1255
1256 return 0;
1257}
1258
1259static int bond_option_pps_set(struct bonding *bond,
1260 const struct bond_opt_value *newval)
1261{
1262 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n",
1263 newval->value);
1264 bond->params.packets_per_slave = newval->value;
1265 if (newval->value > 0) {
1266 bond->params.reciprocal_packets_per_slave =
1267 reciprocal_value(newval->value);
1268 } else {
1269 /* reciprocal_packets_per_slave is unused if
1270 * packets_per_slave is 0 or 1, just initialize it
1271 */
1272 bond->params.reciprocal_packets_per_slave =
1273 (struct reciprocal_value) { 0 };
1274 }
1275
1276 return 0;
1277}
1278
1279static int bond_option_lacp_rate_set(struct bonding *bond,
1280 const struct bond_opt_value *newval)
1281{
1282 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n",
1283 newval->string, newval->value);
1284 bond->params.lacp_fast = newval->value;
1285 bond_3ad_update_lacp_rate(bond);
1286
1287 return 0;
1288}
1289
1290static int bond_option_ad_select_set(struct bonding *bond,
1291 const struct bond_opt_value *newval)
1292{
1293 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n",
1294 newval->string, newval->value);
1295 bond->params.ad_select = newval->value;
1296
1297 return 0;
1298}
1299
1300static int bond_option_queue_id_set(struct bonding *bond,
1301 const struct bond_opt_value *newval)
1302{
1303 struct slave *slave, *update_slave;
1304 struct net_device *sdev;
1305 struct list_head *iter;
1306 char *delim;
1307 int ret = 0;
1308 u16 qid;
1309
1310 /* delim will point to queue id if successful */
1311 delim = strchr(newval->string, ':');
1312 if (!delim)
1313 goto err_no_cmd;
1314
1315 /* Terminate string that points to device name and bump it
1316 * up one, so we can read the queue id there.
1317 */
1318 *delim = '\0';
1319 if (sscanf(++delim, "%hd\n", &qid) != 1)
1320 goto err_no_cmd;
1321
1322 /* Check buffer length, valid ifname and queue id */
1323 if (!dev_valid_name(newval->string) ||
1324 qid > bond->dev->real_num_tx_queues)
1325 goto err_no_cmd;
1326
1327 /* Get the pointer to that interface if it exists */
1328 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1329 if (!sdev)
1330 goto err_no_cmd;
1331
1332 /* Search for thes slave and check for duplicate qids */
1333 update_slave = NULL;
1334 bond_for_each_slave(bond, slave, iter) {
1335 if (sdev == slave->dev)
1336 /* We don't need to check the matching
1337 * slave for dups, since we're overwriting it
1338 */
1339 update_slave = slave;
1340 else if (qid && qid == slave->queue_id) {
1341 goto err_no_cmd;
1342 }
1343 }
1344
1345 if (!update_slave)
1346 goto err_no_cmd;
1347
1348 /* Actually set the qids for the slave */
1349 update_slave->queue_id = qid;
1350
1351out:
1352 return ret;
1353
1354err_no_cmd:
1355 netdev_dbg(bond->dev, "invalid input for queue_id set\n");
1356 ret = -EPERM;
1357 goto out;
1358
1359}
1360
1361static int bond_option_slaves_set(struct bonding *bond,
1362 const struct bond_opt_value *newval)
1363{
1364 char command[IFNAMSIZ + 1] = { 0, };
1365 struct net_device *dev;
1366 char *ifname;
1367 int ret;
1368
1369 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1370 ifname = command + 1;
1371 if ((strlen(command) <= 1) ||
1372 !dev_valid_name(ifname))
1373 goto err_no_cmd;
1374
1375 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1376 if (!dev) {
1377 netdev_dbg(bond->dev, "interface %s does not exist!\n",
1378 ifname);
1379 ret = -ENODEV;
1380 goto out;
1381 }
1382
1383 switch (command[0]) {
1384 case '+':
1385 netdev_dbg(bond->dev, "Adding slave %s\n", dev->name);
1386 ret = bond_enslave(bond->dev, dev, NULL);
1387 break;
1388
1389 case '-':
1390 netdev_dbg(bond->dev, "Removing slave %s\n", dev->name);
1391 ret = bond_release(bond->dev, dev);
1392 break;
1393
1394 default:
1395 goto err_no_cmd;
1396 }
1397
1398out:
1399 return ret;
1400
1401err_no_cmd:
1402 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1403 ret = -EPERM;
1404 goto out;
1405}
1406
1407static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1408 const struct bond_opt_value *newval)
1409{
1410 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1411 newval->string, newval->value);
1412 bond->params.tlb_dynamic_lb = newval->value;
1413
1414 return 0;
1415}
1416
1417static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1418 const struct bond_opt_value *newval)
1419{
1420 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1421 newval->value);
1422
1423 bond->params.ad_actor_sys_prio = newval->value;
1424 bond_3ad_update_ad_actor_settings(bond);
1425
1426 return 0;
1427}
1428
1429static int bond_option_ad_actor_system_set(struct bonding *bond,
1430 const struct bond_opt_value *newval)
1431{
1432 u8 macaddr[ETH_ALEN];
1433 u8 *mac;
1434
1435 if (newval->string) {
1436 if (!mac_pton(newval->string, macaddr))
1437 goto err;
1438 mac = macaddr;
1439 } else {
1440 mac = (u8 *)&newval->value;
1441 }
1442
1443 if (!is_valid_ether_addr(mac))
1444 goto err;
1445
1446 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1447 ether_addr_copy(bond->params.ad_actor_system, mac);
1448 bond_3ad_update_ad_actor_settings(bond);
1449
1450 return 0;
1451
1452err:
1453 netdev_err(bond->dev, "Invalid MAC address.\n");
1454 return -EINVAL;
1455}
1456
1457static int bond_option_ad_user_port_key_set(struct bonding *bond,
1458 const struct bond_opt_value *newval)
1459{
1460 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n",
1461 newval->value);
1462
1463 bond->params.ad_user_port_key = newval->value;
1464 return 0;
1465}
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * drivers/net/bond/bond_options.c - bonding options
4 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
5 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
6 */
7
8#include <linux/errno.h>
9#include <linux/if.h>
10#include <linux/netdevice.h>
11#include <linux/spinlock.h>
12#include <linux/rcupdate.h>
13#include <linux/ctype.h>
14#include <linux/inet.h>
15#include <linux/sched/signal.h>
16
17#include <net/bonding.h>
18#include <net/ndisc.h>
19
20static int bond_option_active_slave_set(struct bonding *bond,
21 const struct bond_opt_value *newval);
22static int bond_option_miimon_set(struct bonding *bond,
23 const struct bond_opt_value *newval);
24static int bond_option_updelay_set(struct bonding *bond,
25 const struct bond_opt_value *newval);
26static int bond_option_downdelay_set(struct bonding *bond,
27 const struct bond_opt_value *newval);
28static int bond_option_peer_notif_delay_set(struct bonding *bond,
29 const struct bond_opt_value *newval);
30static int bond_option_use_carrier_set(struct bonding *bond,
31 const struct bond_opt_value *newval);
32static int bond_option_arp_interval_set(struct bonding *bond,
33 const struct bond_opt_value *newval);
34static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
35static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
36static int bond_option_arp_ip_targets_set(struct bonding *bond,
37 const struct bond_opt_value *newval);
38static int bond_option_ns_ip6_targets_set(struct bonding *bond,
39 const struct bond_opt_value *newval);
40static int bond_option_arp_validate_set(struct bonding *bond,
41 const struct bond_opt_value *newval);
42static int bond_option_arp_all_targets_set(struct bonding *bond,
43 const struct bond_opt_value *newval);
44static int bond_option_prio_set(struct bonding *bond,
45 const struct bond_opt_value *newval);
46static int bond_option_primary_set(struct bonding *bond,
47 const struct bond_opt_value *newval);
48static int bond_option_primary_reselect_set(struct bonding *bond,
49 const struct bond_opt_value *newval);
50static int bond_option_fail_over_mac_set(struct bonding *bond,
51 const struct bond_opt_value *newval);
52static int bond_option_xmit_hash_policy_set(struct bonding *bond,
53 const struct bond_opt_value *newval);
54static int bond_option_resend_igmp_set(struct bonding *bond,
55 const struct bond_opt_value *newval);
56static int bond_option_num_peer_notif_set(struct bonding *bond,
57 const struct bond_opt_value *newval);
58static int bond_option_all_slaves_active_set(struct bonding *bond,
59 const struct bond_opt_value *newval);
60static int bond_option_min_links_set(struct bonding *bond,
61 const struct bond_opt_value *newval);
62static int bond_option_lp_interval_set(struct bonding *bond,
63 const struct bond_opt_value *newval);
64static int bond_option_pps_set(struct bonding *bond,
65 const struct bond_opt_value *newval);
66static int bond_option_lacp_active_set(struct bonding *bond,
67 const struct bond_opt_value *newval);
68static int bond_option_lacp_rate_set(struct bonding *bond,
69 const struct bond_opt_value *newval);
70static int bond_option_ad_select_set(struct bonding *bond,
71 const struct bond_opt_value *newval);
72static int bond_option_queue_id_set(struct bonding *bond,
73 const struct bond_opt_value *newval);
74static int bond_option_mode_set(struct bonding *bond,
75 const struct bond_opt_value *newval);
76static int bond_option_slaves_set(struct bonding *bond,
77 const struct bond_opt_value *newval);
78static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
79 const struct bond_opt_value *newval);
80static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
81 const struct bond_opt_value *newval);
82static int bond_option_ad_actor_system_set(struct bonding *bond,
83 const struct bond_opt_value *newval);
84static int bond_option_ad_user_port_key_set(struct bonding *bond,
85 const struct bond_opt_value *newval);
86static int bond_option_missed_max_set(struct bonding *bond,
87 const struct bond_opt_value *newval);
88static int bond_option_coupled_control_set(struct bonding *bond,
89 const struct bond_opt_value *newval);
90
91static const struct bond_opt_value bond_mode_tbl[] = {
92 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
93 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
94 { "balance-xor", BOND_MODE_XOR, 0},
95 { "broadcast", BOND_MODE_BROADCAST, 0},
96 { "802.3ad", BOND_MODE_8023AD, 0},
97 { "balance-tlb", BOND_MODE_TLB, 0},
98 { "balance-alb", BOND_MODE_ALB, 0},
99 { NULL, -1, 0},
100};
101
102static const struct bond_opt_value bond_pps_tbl[] = {
103 { "default", 1, BOND_VALFLAG_DEFAULT},
104 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
105 { NULL, -1, 0},
106};
107
108static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
109 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
110 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
111 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
112 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
113 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
114 { "vlan+srcmac", BOND_XMIT_POLICY_VLAN_SRCMAC, 0},
115 { NULL, -1, 0},
116};
117
118static const struct bond_opt_value bond_arp_validate_tbl[] = {
119 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
120 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
121 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
122 { "all", BOND_ARP_VALIDATE_ALL, 0},
123 { "filter", BOND_ARP_FILTER, 0},
124 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
125 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
126 { NULL, -1, 0},
127};
128
129static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
130 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
131 { "all", BOND_ARP_TARGETS_ALL, 0},
132 { NULL, -1, 0},
133};
134
135static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
136 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
137 { "active", BOND_FOM_ACTIVE, 0},
138 { "follow", BOND_FOM_FOLLOW, 0},
139 { NULL, -1, 0},
140};
141
142static const struct bond_opt_value bond_intmax_tbl[] = {
143 { "off", 0, BOND_VALFLAG_DEFAULT},
144 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
145 { NULL, -1, 0}
146};
147
148static const struct bond_opt_value bond_lacp_active[] = {
149 { "off", 0, 0},
150 { "on", 1, BOND_VALFLAG_DEFAULT},
151 { NULL, -1, 0}
152};
153
154static const struct bond_opt_value bond_lacp_rate_tbl[] = {
155 { "slow", AD_LACP_SLOW, 0},
156 { "fast", AD_LACP_FAST, 0},
157 { NULL, -1, 0},
158};
159
160static const struct bond_opt_value bond_ad_select_tbl[] = {
161 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
162 { "bandwidth", BOND_AD_BANDWIDTH, 0},
163 { "count", BOND_AD_COUNT, 0},
164 { NULL, -1, 0},
165};
166
167static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
168 { "off", 0, 0},
169 { "maxval", 255, BOND_VALFLAG_MAX},
170 { "default", 1, BOND_VALFLAG_DEFAULT},
171 { NULL, -1, 0}
172};
173
174static const struct bond_opt_value bond_peer_notif_delay_tbl[] = {
175 { "off", 0, 0},
176 { "maxval", 300000, BOND_VALFLAG_MAX},
177 { NULL, -1, 0}
178};
179
180static const struct bond_opt_value bond_primary_reselect_tbl[] = {
181 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
182 { "better", BOND_PRI_RESELECT_BETTER, 0},
183 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
184 { NULL, -1},
185};
186
187static const struct bond_opt_value bond_use_carrier_tbl[] = {
188 { "off", 0, 0},
189 { "on", 1, BOND_VALFLAG_DEFAULT},
190 { NULL, -1, 0}
191};
192
193static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
194 { "off", 0, BOND_VALFLAG_DEFAULT},
195 { "on", 1, 0},
196 { NULL, -1, 0}
197};
198
199static const struct bond_opt_value bond_resend_igmp_tbl[] = {
200 { "off", 0, 0},
201 { "maxval", 255, BOND_VALFLAG_MAX},
202 { "default", 1, BOND_VALFLAG_DEFAULT},
203 { NULL, -1, 0}
204};
205
206static const struct bond_opt_value bond_lp_interval_tbl[] = {
207 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
208 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
209 { NULL, -1, 0},
210};
211
212static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
213 { "off", 0, 0},
214 { "on", 1, BOND_VALFLAG_DEFAULT},
215 { NULL, -1, 0}
216};
217
218static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
219 { "minval", 1, BOND_VALFLAG_MIN},
220 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
221 { NULL, -1, 0},
222};
223
224static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
225 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
226 { "maxval", 1023, BOND_VALFLAG_MAX},
227 { NULL, -1, 0},
228};
229
230static const struct bond_opt_value bond_missed_max_tbl[] = {
231 { "minval", 1, BOND_VALFLAG_MIN},
232 { "maxval", 255, BOND_VALFLAG_MAX},
233 { "default", 2, BOND_VALFLAG_DEFAULT},
234 { NULL, -1, 0},
235};
236
237static const struct bond_opt_value bond_coupled_control_tbl[] = {
238 { "on", 1, BOND_VALFLAG_DEFAULT},
239 { "off", 0, 0},
240 { NULL, -1, 0},
241};
242
243static const struct bond_option bond_opts[BOND_OPT_LAST] = {
244 [BOND_OPT_MODE] = {
245 .id = BOND_OPT_MODE,
246 .name = "mode",
247 .desc = "bond device mode",
248 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
249 .values = bond_mode_tbl,
250 .set = bond_option_mode_set
251 },
252 [BOND_OPT_PACKETS_PER_SLAVE] = {
253 .id = BOND_OPT_PACKETS_PER_SLAVE,
254 .name = "packets_per_slave",
255 .desc = "Packets to send per slave in RR mode",
256 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
257 .values = bond_pps_tbl,
258 .set = bond_option_pps_set
259 },
260 [BOND_OPT_XMIT_HASH] = {
261 .id = BOND_OPT_XMIT_HASH,
262 .name = "xmit_hash_policy",
263 .desc = "balance-xor, 802.3ad, and tlb hashing method",
264 .values = bond_xmit_hashtype_tbl,
265 .set = bond_option_xmit_hash_policy_set
266 },
267 [BOND_OPT_ARP_VALIDATE] = {
268 .id = BOND_OPT_ARP_VALIDATE,
269 .name = "arp_validate",
270 .desc = "validate src/dst of ARP probes",
271 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
272 BIT(BOND_MODE_ALB),
273 .values = bond_arp_validate_tbl,
274 .set = bond_option_arp_validate_set
275 },
276 [BOND_OPT_ARP_ALL_TARGETS] = {
277 .id = BOND_OPT_ARP_ALL_TARGETS,
278 .name = "arp_all_targets",
279 .desc = "fail on any/all arp targets timeout",
280 .values = bond_arp_all_targets_tbl,
281 .set = bond_option_arp_all_targets_set
282 },
283 [BOND_OPT_FAIL_OVER_MAC] = {
284 .id = BOND_OPT_FAIL_OVER_MAC,
285 .name = "fail_over_mac",
286 .desc = "For active-backup, do not set all slaves to the same MAC",
287 .flags = BOND_OPTFLAG_NOSLAVES,
288 .values = bond_fail_over_mac_tbl,
289 .set = bond_option_fail_over_mac_set
290 },
291 [BOND_OPT_ARP_INTERVAL] = {
292 .id = BOND_OPT_ARP_INTERVAL,
293 .name = "arp_interval",
294 .desc = "arp interval in milliseconds",
295 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
296 BIT(BOND_MODE_ALB),
297 .values = bond_intmax_tbl,
298 .set = bond_option_arp_interval_set
299 },
300 [BOND_OPT_MISSED_MAX] = {
301 .id = BOND_OPT_MISSED_MAX,
302 .name = "arp_missed_max",
303 .desc = "Maximum number of missed ARP interval",
304 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
305 BIT(BOND_MODE_ALB),
306 .values = bond_missed_max_tbl,
307 .set = bond_option_missed_max_set
308 },
309 [BOND_OPT_ARP_TARGETS] = {
310 .id = BOND_OPT_ARP_TARGETS,
311 .name = "arp_ip_target",
312 .desc = "arp targets in n.n.n.n form",
313 .flags = BOND_OPTFLAG_RAWVAL,
314 .set = bond_option_arp_ip_targets_set
315 },
316 [BOND_OPT_NS_TARGETS] = {
317 .id = BOND_OPT_NS_TARGETS,
318 .name = "ns_ip6_target",
319 .desc = "NS targets in ffff:ffff::ffff:ffff form",
320 .flags = BOND_OPTFLAG_RAWVAL,
321 .set = bond_option_ns_ip6_targets_set
322 },
323 [BOND_OPT_DOWNDELAY] = {
324 .id = BOND_OPT_DOWNDELAY,
325 .name = "downdelay",
326 .desc = "Delay before considering link down, in milliseconds",
327 .values = bond_intmax_tbl,
328 .set = bond_option_downdelay_set
329 },
330 [BOND_OPT_UPDELAY] = {
331 .id = BOND_OPT_UPDELAY,
332 .name = "updelay",
333 .desc = "Delay before considering link up, in milliseconds",
334 .values = bond_intmax_tbl,
335 .set = bond_option_updelay_set
336 },
337 [BOND_OPT_LACP_ACTIVE] = {
338 .id = BOND_OPT_LACP_ACTIVE,
339 .name = "lacp_active",
340 .desc = "Send LACPDU frames with configured lacp rate or acts as speak when spoken to",
341 .flags = BOND_OPTFLAG_IFDOWN,
342 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
343 .values = bond_lacp_active,
344 .set = bond_option_lacp_active_set
345 },
346 [BOND_OPT_LACP_RATE] = {
347 .id = BOND_OPT_LACP_RATE,
348 .name = "lacp_rate",
349 .desc = "LACPDU tx rate to request from 802.3ad partner",
350 .flags = BOND_OPTFLAG_IFDOWN,
351 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
352 .values = bond_lacp_rate_tbl,
353 .set = bond_option_lacp_rate_set
354 },
355 [BOND_OPT_MINLINKS] = {
356 .id = BOND_OPT_MINLINKS,
357 .name = "min_links",
358 .desc = "Minimum number of available links before turning on carrier",
359 .values = bond_intmax_tbl,
360 .set = bond_option_min_links_set
361 },
362 [BOND_OPT_AD_SELECT] = {
363 .id = BOND_OPT_AD_SELECT,
364 .name = "ad_select",
365 .desc = "803.ad aggregation selection logic",
366 .flags = BOND_OPTFLAG_IFDOWN,
367 .values = bond_ad_select_tbl,
368 .set = bond_option_ad_select_set
369 },
370 [BOND_OPT_NUM_PEER_NOTIF] = {
371 .id = BOND_OPT_NUM_PEER_NOTIF,
372 .name = "num_unsol_na",
373 .desc = "Number of peer notifications to send on failover event",
374 .values = bond_num_peer_notif_tbl,
375 .set = bond_option_num_peer_notif_set
376 },
377 [BOND_OPT_MIIMON] = {
378 .id = BOND_OPT_MIIMON,
379 .name = "miimon",
380 .desc = "Link check interval in milliseconds",
381 .values = bond_intmax_tbl,
382 .set = bond_option_miimon_set
383 },
384 [BOND_OPT_PRIO] = {
385 .id = BOND_OPT_PRIO,
386 .name = "prio",
387 .desc = "Link priority for failover re-selection",
388 .flags = BOND_OPTFLAG_RAWVAL,
389 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
390 BIT(BOND_MODE_TLB) |
391 BIT(BOND_MODE_ALB)),
392 .set = bond_option_prio_set
393 },
394 [BOND_OPT_PRIMARY] = {
395 .id = BOND_OPT_PRIMARY,
396 .name = "primary",
397 .desc = "Primary network device to use",
398 .flags = BOND_OPTFLAG_RAWVAL,
399 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
400 BIT(BOND_MODE_TLB) |
401 BIT(BOND_MODE_ALB)),
402 .set = bond_option_primary_set
403 },
404 [BOND_OPT_PRIMARY_RESELECT] = {
405 .id = BOND_OPT_PRIMARY_RESELECT,
406 .name = "primary_reselect",
407 .desc = "Reselect primary slave once it comes up",
408 .values = bond_primary_reselect_tbl,
409 .set = bond_option_primary_reselect_set
410 },
411 [BOND_OPT_USE_CARRIER] = {
412 .id = BOND_OPT_USE_CARRIER,
413 .name = "use_carrier",
414 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
415 .values = bond_use_carrier_tbl,
416 .set = bond_option_use_carrier_set
417 },
418 [BOND_OPT_ACTIVE_SLAVE] = {
419 .id = BOND_OPT_ACTIVE_SLAVE,
420 .name = "active_slave",
421 .desc = "Currently active slave",
422 .flags = BOND_OPTFLAG_RAWVAL,
423 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
424 BIT(BOND_MODE_TLB) |
425 BIT(BOND_MODE_ALB)),
426 .set = bond_option_active_slave_set
427 },
428 [BOND_OPT_QUEUE_ID] = {
429 .id = BOND_OPT_QUEUE_ID,
430 .name = "queue_id",
431 .desc = "Set queue id of a slave",
432 .flags = BOND_OPTFLAG_RAWVAL,
433 .set = bond_option_queue_id_set
434 },
435 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
436 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
437 .name = "all_slaves_active",
438 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
439 .values = bond_all_slaves_active_tbl,
440 .set = bond_option_all_slaves_active_set
441 },
442 [BOND_OPT_RESEND_IGMP] = {
443 .id = BOND_OPT_RESEND_IGMP,
444 .name = "resend_igmp",
445 .desc = "Number of IGMP membership reports to send on link failure",
446 .values = bond_resend_igmp_tbl,
447 .set = bond_option_resend_igmp_set
448 },
449 [BOND_OPT_LP_INTERVAL] = {
450 .id = BOND_OPT_LP_INTERVAL,
451 .name = "lp_interval",
452 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
453 .values = bond_lp_interval_tbl,
454 .set = bond_option_lp_interval_set
455 },
456 [BOND_OPT_SLAVES] = {
457 .id = BOND_OPT_SLAVES,
458 .name = "slaves",
459 .desc = "Slave membership management",
460 .flags = BOND_OPTFLAG_RAWVAL,
461 .set = bond_option_slaves_set
462 },
463 [BOND_OPT_TLB_DYNAMIC_LB] = {
464 .id = BOND_OPT_TLB_DYNAMIC_LB,
465 .name = "tlb_dynamic_lb",
466 .desc = "Enable dynamic flow shuffling",
467 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB) | BIT(BOND_MODE_ALB)),
468 .values = bond_tlb_dynamic_lb_tbl,
469 .flags = BOND_OPTFLAG_IFDOWN,
470 .set = bond_option_tlb_dynamic_lb_set,
471 },
472 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
473 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
474 .name = "ad_actor_sys_prio",
475 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
476 .values = bond_ad_actor_sys_prio_tbl,
477 .set = bond_option_ad_actor_sys_prio_set,
478 },
479 [BOND_OPT_AD_ACTOR_SYSTEM] = {
480 .id = BOND_OPT_AD_ACTOR_SYSTEM,
481 .name = "ad_actor_system",
482 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
483 .flags = BOND_OPTFLAG_RAWVAL,
484 .set = bond_option_ad_actor_system_set,
485 },
486 [BOND_OPT_AD_USER_PORT_KEY] = {
487 .id = BOND_OPT_AD_USER_PORT_KEY,
488 .name = "ad_user_port_key",
489 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
490 .flags = BOND_OPTFLAG_IFDOWN,
491 .values = bond_ad_user_port_key_tbl,
492 .set = bond_option_ad_user_port_key_set,
493 },
494 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
495 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
496 .name = "num_grat_arp",
497 .desc = "Number of peer notifications to send on failover event",
498 .values = bond_num_peer_notif_tbl,
499 .set = bond_option_num_peer_notif_set
500 },
501 [BOND_OPT_PEER_NOTIF_DELAY] = {
502 .id = BOND_OPT_PEER_NOTIF_DELAY,
503 .name = "peer_notif_delay",
504 .desc = "Delay between each peer notification on failover event, in milliseconds",
505 .values = bond_peer_notif_delay_tbl,
506 .set = bond_option_peer_notif_delay_set
507 },
508 [BOND_OPT_COUPLED_CONTROL] = {
509 .id = BOND_OPT_COUPLED_CONTROL,
510 .name = "coupled_control",
511 .desc = "Opt into using coupled control MUX for LACP states",
512 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
513 .flags = BOND_OPTFLAG_IFDOWN,
514 .values = bond_coupled_control_tbl,
515 .set = bond_option_coupled_control_set,
516 }
517};
518
519/* Searches for an option by name */
520const struct bond_option *bond_opt_get_by_name(const char *name)
521{
522 const struct bond_option *opt;
523 int option;
524
525 for (option = 0; option < BOND_OPT_LAST; option++) {
526 opt = bond_opt_get(option);
527 if (opt && !strcmp(opt->name, name))
528 return opt;
529 }
530
531 return NULL;
532}
533
534/* Searches for a value in opt's values[] table */
535const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
536{
537 const struct bond_option *opt;
538 int i;
539
540 opt = bond_opt_get(option);
541 if (WARN_ON(!opt))
542 return NULL;
543 for (i = 0; opt->values && opt->values[i].string; i++)
544 if (opt->values[i].value == val)
545 return &opt->values[i];
546
547 return NULL;
548}
549
550/* Searches for a value in opt's values[] table which matches the flagmask */
551static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
552 u32 flagmask)
553{
554 int i;
555
556 for (i = 0; opt->values && opt->values[i].string; i++)
557 if (opt->values[i].flags & flagmask)
558 return &opt->values[i];
559
560 return NULL;
561}
562
563/* If maxval is missing then there's no range to check. In case minval is
564 * missing then it's considered to be 0.
565 */
566static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
567{
568 const struct bond_opt_value *minval, *maxval;
569
570 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
571 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
572 if (!maxval || (minval && val < minval->value) || val > maxval->value)
573 return false;
574
575 return true;
576}
577
578/**
579 * bond_opt_parse - parse option value
580 * @opt: the option to parse against
581 * @val: value to parse
582 *
583 * This function tries to extract the value from @val and check if it's
584 * a possible match for the option and returns NULL if a match isn't found,
585 * or the struct_opt_value that matched. It also strips the new line from
586 * @val->string if it's present.
587 */
588const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
589 struct bond_opt_value *val)
590{
591 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
592 const struct bond_opt_value *tbl;
593 const struct bond_opt_value *ret = NULL;
594 bool checkval;
595 int i, rv;
596
597 /* No parsing if the option wants a raw val */
598 if (opt->flags & BOND_OPTFLAG_RAWVAL)
599 return val;
600
601 tbl = opt->values;
602 if (!tbl)
603 goto out;
604
605 /* ULLONG_MAX is used to bypass string processing */
606 checkval = val->value != ULLONG_MAX;
607 if (!checkval) {
608 if (!val->string)
609 goto out;
610 p = strchr(val->string, '\n');
611 if (p)
612 *p = '\0';
613 for (p = val->string; *p; p++)
614 if (!(isdigit(*p) || isspace(*p)))
615 break;
616 /* The following code extracts the string to match or the value
617 * and sets checkval appropriately
618 */
619 if (*p) {
620 rv = sscanf(val->string, "%32s", valstr);
621 } else {
622 rv = sscanf(val->string, "%llu", &val->value);
623 checkval = true;
624 }
625 if (!rv)
626 goto out;
627 }
628
629 for (i = 0; tbl[i].string; i++) {
630 /* Check for exact match */
631 if (checkval) {
632 if (val->value == tbl[i].value)
633 ret = &tbl[i];
634 } else {
635 if (!strcmp(valstr, "default") &&
636 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
637 ret = &tbl[i];
638
639 if (!strcmp(valstr, tbl[i].string))
640 ret = &tbl[i];
641 }
642 /* Found an exact match */
643 if (ret)
644 goto out;
645 }
646 /* Possible range match */
647 if (checkval && bond_opt_check_range(opt, val->value))
648 ret = val;
649out:
650 return ret;
651}
652
653/* Check opt's dependencies against bond mode and currently set options */
654static int bond_opt_check_deps(struct bonding *bond,
655 const struct bond_option *opt)
656{
657 struct bond_params *params = &bond->params;
658
659 if (test_bit(params->mode, &opt->unsuppmodes))
660 return -EACCES;
661 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
662 return -ENOTEMPTY;
663 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
664 return -EBUSY;
665
666 return 0;
667}
668
669static void bond_opt_dep_print(struct bonding *bond,
670 const struct bond_option *opt,
671 struct nlattr *bad_attr,
672 struct netlink_ext_ack *extack)
673{
674 const struct bond_opt_value *modeval;
675 struct bond_params *params;
676
677 params = &bond->params;
678 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
679 if (test_bit(params->mode, &opt->unsuppmodes)) {
680 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
681 opt->name, modeval->string, modeval->value);
682 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
683 "option not supported in mode");
684 }
685}
686
687static void bond_opt_error_interpret(struct bonding *bond,
688 const struct bond_option *opt,
689 int error, const struct bond_opt_value *val,
690 struct nlattr *bad_attr,
691 struct netlink_ext_ack *extack)
692{
693 const struct bond_opt_value *minval, *maxval;
694 char *p;
695
696 switch (error) {
697 case -EINVAL:
698 NL_SET_ERR_MSG_ATTR(extack, bad_attr, "invalid option value");
699 if (val) {
700 if (val->string) {
701 /* sometimes RAWVAL opts may have new lines */
702 p = strchr(val->string, '\n');
703 if (p)
704 *p = '\0';
705 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
706 opt->name, val->string);
707 } else {
708 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
709 opt->name, val->value);
710 }
711 }
712 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
713 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
714 if (!maxval)
715 break;
716 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
717 opt->name, minval ? minval->value : 0, maxval->value);
718 break;
719 case -EACCES:
720 bond_opt_dep_print(bond, opt, bad_attr, extack);
721 break;
722 case -ENOTEMPTY:
723 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
724 "unable to set option because the bond device has slaves");
725 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
726 opt->name);
727 break;
728 case -EBUSY:
729 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
730 "unable to set option because the bond is up");
731 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
732 opt->name);
733 break;
734 case -ENODEV:
735 if (val && val->string) {
736 p = strchr(val->string, '\n');
737 if (p)
738 *p = '\0';
739 netdev_err(bond->dev, "option %s: interface %s does not exist!\n",
740 opt->name, val->string);
741 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
742 "interface does not exist");
743 }
744 break;
745 default:
746 break;
747 }
748}
749
750/**
751 * __bond_opt_set - set a bonding option
752 * @bond: target bond device
753 * @option: option to set
754 * @val: value to set it to
755 * @bad_attr: netlink attribue that caused the error
756 * @extack: extended netlink error structure, used when an error message
757 * needs to be returned to the caller via netlink
758 *
759 * This function is used to change the bond's option value, it can be
760 * used for both enabling/changing an option and for disabling it. RTNL lock
761 * must be obtained before calling this function.
762 */
763int __bond_opt_set(struct bonding *bond,
764 unsigned int option, struct bond_opt_value *val,
765 struct nlattr *bad_attr, struct netlink_ext_ack *extack)
766{
767 const struct bond_opt_value *retval = NULL;
768 const struct bond_option *opt;
769 int ret = -ENOENT;
770
771 ASSERT_RTNL();
772
773 opt = bond_opt_get(option);
774 if (WARN_ON(!val) || WARN_ON(!opt))
775 goto out;
776 ret = bond_opt_check_deps(bond, opt);
777 if (ret)
778 goto out;
779 retval = bond_opt_parse(opt, val);
780 if (!retval) {
781 ret = -EINVAL;
782 goto out;
783 }
784 ret = opt->set(bond, retval);
785out:
786 if (ret)
787 bond_opt_error_interpret(bond, opt, ret, val, bad_attr, extack);
788
789 return ret;
790}
791/**
792 * __bond_opt_set_notify - set a bonding option
793 * @bond: target bond device
794 * @option: option to set
795 * @val: value to set it to
796 *
797 * This function is used to change the bond's option value and trigger
798 * a notification to user sapce. It can be used for both enabling/changing
799 * an option and for disabling it. RTNL lock must be obtained before calling
800 * this function.
801 */
802int __bond_opt_set_notify(struct bonding *bond,
803 unsigned int option, struct bond_opt_value *val)
804{
805 int ret;
806
807 ASSERT_RTNL();
808
809 ret = __bond_opt_set(bond, option, val, NULL, NULL);
810
811 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
812 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
813
814 return ret;
815}
816
817/**
818 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
819 * @bond: target bond device
820 * @option: option to set
821 * @buf: value to set it to
822 *
823 * This function tries to acquire RTNL without blocking and if successful
824 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
825 */
826int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
827{
828 struct bond_opt_value optval;
829 int ret;
830
831 if (!rtnl_trylock())
832 return restart_syscall();
833 bond_opt_initstr(&optval, buf);
834 ret = __bond_opt_set_notify(bond, option, &optval);
835 rtnl_unlock();
836
837 return ret;
838}
839
840/**
841 * bond_opt_get - get a pointer to an option
842 * @option: option for which to return a pointer
843 *
844 * This function checks if option is valid and if so returns a pointer
845 * to its entry in the bond_opts[] option array.
846 */
847const struct bond_option *bond_opt_get(unsigned int option)
848{
849 if (!BOND_OPT_VALID(option))
850 return NULL;
851
852 return &bond_opts[option];
853}
854
855static bool bond_set_xfrm_features(struct bonding *bond)
856{
857 if (!IS_ENABLED(CONFIG_XFRM_OFFLOAD))
858 return false;
859
860 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
861 bond->dev->wanted_features |= BOND_XFRM_FEATURES;
862 else
863 bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
864
865 return true;
866}
867
868static int bond_option_mode_set(struct bonding *bond,
869 const struct bond_opt_value *newval)
870{
871 if (!bond_mode_uses_arp(newval->value)) {
872 if (bond->params.arp_interval) {
873 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
874 newval->string);
875 /* disable arp monitoring */
876 bond->params.arp_interval = 0;
877 }
878
879 if (!bond->params.miimon) {
880 /* set miimon to default value */
881 bond->params.miimon = BOND_DEFAULT_MIIMON;
882 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n",
883 bond->params.miimon);
884 }
885 }
886
887 if (newval->value == BOND_MODE_ALB)
888 bond->params.tlb_dynamic_lb = 1;
889
890 /* don't cache arp_validate between modes */
891 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
892 bond->params.mode = newval->value;
893
894 if (bond->dev->reg_state == NETREG_REGISTERED) {
895 bool update = false;
896
897 update |= bond_set_xfrm_features(bond);
898
899 if (update)
900 netdev_update_features(bond->dev);
901 }
902
903 bond_xdp_set_features(bond->dev);
904
905 return 0;
906}
907
908static int bond_option_active_slave_set(struct bonding *bond,
909 const struct bond_opt_value *newval)
910{
911 char ifname[IFNAMSIZ] = { 0, };
912 struct net_device *slave_dev;
913 int ret = 0;
914
915 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
916 if (!strlen(ifname) || newval->string[0] == '\n') {
917 slave_dev = NULL;
918 } else {
919 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
920 if (!slave_dev)
921 return -ENODEV;
922 }
923
924 if (slave_dev) {
925 if (!netif_is_bond_slave(slave_dev)) {
926 slave_err(bond->dev, slave_dev, "Device is not bonding slave\n");
927 return -EINVAL;
928 }
929
930 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
931 slave_err(bond->dev, slave_dev, "Device is not our slave\n");
932 return -EINVAL;
933 }
934 }
935
936 block_netpoll_tx();
937 /* check to see if we are clearing active */
938 if (!slave_dev) {
939 netdev_dbg(bond->dev, "Clearing current active slave\n");
940 bond_change_active_slave(bond, NULL);
941 bond_select_active_slave(bond);
942 } else {
943 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
944 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
945
946 BUG_ON(!new_active);
947
948 if (new_active == old_active) {
949 /* do nothing */
950 slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n");
951 } else {
952 if (old_active && (new_active->link == BOND_LINK_UP) &&
953 bond_slave_is_up(new_active)) {
954 slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n");
955 bond_change_active_slave(bond, new_active);
956 } else {
957 slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n",
958 new_active->dev->name);
959 ret = -EINVAL;
960 }
961 }
962 }
963 unblock_netpoll_tx();
964
965 return ret;
966}
967
968/* There are two tricky bits here. First, if MII monitoring is activated, then
969 * we must disable ARP monitoring. Second, if the timer isn't running, we must
970 * start it.
971 */
972static int bond_option_miimon_set(struct bonding *bond,
973 const struct bond_opt_value *newval)
974{
975 netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n",
976 newval->value);
977 bond->params.miimon = newval->value;
978 if (bond->params.updelay)
979 netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
980 bond->params.updelay * bond->params.miimon);
981 if (bond->params.downdelay)
982 netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
983 bond->params.downdelay * bond->params.miimon);
984 if (bond->params.peer_notif_delay)
985 netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n",
986 bond->params.peer_notif_delay * bond->params.miimon);
987 if (newval->value && bond->params.arp_interval) {
988 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
989 bond->params.arp_interval = 0;
990 if (bond->params.arp_validate)
991 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
992 }
993 if (bond->dev->flags & IFF_UP) {
994 /* If the interface is up, we may need to fire off
995 * the MII timer. If the interface is down, the
996 * timer will get fired off when the open function
997 * is called.
998 */
999 if (!newval->value) {
1000 cancel_delayed_work_sync(&bond->mii_work);
1001 } else {
1002 cancel_delayed_work_sync(&bond->arp_work);
1003 queue_delayed_work(bond->wq, &bond->mii_work, 0);
1004 }
1005 }
1006
1007 return 0;
1008}
1009
1010/* Set up, down and peer notification delays. These must be multiples
1011 * of the MII monitoring value, and are stored internally as the
1012 * multiplier. Thus, we must translate to MS for the real world.
1013 */
1014static int _bond_option_delay_set(struct bonding *bond,
1015 const struct bond_opt_value *newval,
1016 const char *name,
1017 int *target)
1018{
1019 int value = newval->value;
1020
1021 if (!bond->params.miimon) {
1022 netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n",
1023 name);
1024 return -EPERM;
1025 }
1026 if ((value % bond->params.miimon) != 0) {
1027 netdev_warn(bond->dev,
1028 "%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n",
1029 name,
1030 value, bond->params.miimon,
1031 (value / bond->params.miimon) *
1032 bond->params.miimon);
1033 }
1034 *target = value / bond->params.miimon;
1035 netdev_dbg(bond->dev, "Setting %s to %d\n",
1036 name,
1037 *target * bond->params.miimon);
1038
1039 return 0;
1040}
1041
1042static int bond_option_updelay_set(struct bonding *bond,
1043 const struct bond_opt_value *newval)
1044{
1045 return _bond_option_delay_set(bond, newval, "up delay",
1046 &bond->params.updelay);
1047}
1048
1049static int bond_option_downdelay_set(struct bonding *bond,
1050 const struct bond_opt_value *newval)
1051{
1052 return _bond_option_delay_set(bond, newval, "down delay",
1053 &bond->params.downdelay);
1054}
1055
1056static int bond_option_peer_notif_delay_set(struct bonding *bond,
1057 const struct bond_opt_value *newval)
1058{
1059 int ret = _bond_option_delay_set(bond, newval,
1060 "peer notification delay",
1061 &bond->params.peer_notif_delay);
1062 return ret;
1063}
1064
1065static int bond_option_use_carrier_set(struct bonding *bond,
1066 const struct bond_opt_value *newval)
1067{
1068 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n",
1069 newval->value);
1070 bond->params.use_carrier = newval->value;
1071
1072 return 0;
1073}
1074
1075/* There are two tricky bits here. First, if ARP monitoring is activated, then
1076 * we must disable MII monitoring. Second, if the ARP timer isn't running,
1077 * we must start it.
1078 */
1079static int bond_option_arp_interval_set(struct bonding *bond,
1080 const struct bond_opt_value *newval)
1081{
1082 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n",
1083 newval->value);
1084 bond->params.arp_interval = newval->value;
1085 if (newval->value) {
1086 if (bond->params.miimon) {
1087 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
1088 bond->params.miimon = 0;
1089 }
1090 if (!bond->params.arp_targets[0])
1091 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
1092 }
1093 if (bond->dev->flags & IFF_UP) {
1094 /* If the interface is up, we may need to fire off
1095 * the ARP timer. If the interface is down, the
1096 * timer will get fired off when the open function
1097 * is called.
1098 */
1099 if (!newval->value) {
1100 if (bond->params.arp_validate)
1101 bond->recv_probe = NULL;
1102 cancel_delayed_work_sync(&bond->arp_work);
1103 } else {
1104 /* arp_validate can be set only in active-backup mode */
1105 bond->recv_probe = bond_rcv_validate;
1106 cancel_delayed_work_sync(&bond->mii_work);
1107 queue_delayed_work(bond->wq, &bond->arp_work, 0);
1108 }
1109 }
1110
1111 return 0;
1112}
1113
1114static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
1115 __be32 target,
1116 unsigned long last_rx)
1117{
1118 __be32 *targets = bond->params.arp_targets;
1119 struct list_head *iter;
1120 struct slave *slave;
1121
1122 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
1123 bond_for_each_slave(bond, slave, iter)
1124 slave->target_last_arp_rx[slot] = last_rx;
1125 targets[slot] = target;
1126 }
1127}
1128
1129static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1130{
1131 __be32 *targets = bond->params.arp_targets;
1132 int ind;
1133
1134 if (!bond_is_ip_target_ok(target)) {
1135 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
1136 &target);
1137 return -EINVAL;
1138 }
1139
1140 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
1141 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
1142 &target);
1143 return -EINVAL;
1144 }
1145
1146 ind = bond_get_targets_ip(targets, 0); /* first free slot */
1147 if (ind == -1) {
1148 netdev_err(bond->dev, "ARP target table is full!\n");
1149 return -EINVAL;
1150 }
1151
1152 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
1153
1154 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
1155
1156 return 0;
1157}
1158
1159static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1160{
1161 return _bond_option_arp_ip_target_add(bond, target);
1162}
1163
1164static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
1165{
1166 __be32 *targets = bond->params.arp_targets;
1167 struct list_head *iter;
1168 struct slave *slave;
1169 unsigned long *targets_rx;
1170 int ind, i;
1171
1172 if (!bond_is_ip_target_ok(target)) {
1173 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1174 &target);
1175 return -EINVAL;
1176 }
1177
1178 ind = bond_get_targets_ip(targets, target);
1179 if (ind == -1) {
1180 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1181 &target);
1182 return -EINVAL;
1183 }
1184
1185 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1186 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1187
1188 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
1189
1190 bond_for_each_slave(bond, slave, iter) {
1191 targets_rx = slave->target_last_arp_rx;
1192 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1193 targets_rx[i] = targets_rx[i+1];
1194 targets_rx[i] = 0;
1195 }
1196 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1197 targets[i] = targets[i+1];
1198 targets[i] = 0;
1199
1200 return 0;
1201}
1202
1203void bond_option_arp_ip_targets_clear(struct bonding *bond)
1204{
1205 int i;
1206
1207 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1208 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1209}
1210
1211static int bond_option_arp_ip_targets_set(struct bonding *bond,
1212 const struct bond_opt_value *newval)
1213{
1214 int ret = -EPERM;
1215 __be32 target;
1216
1217 if (newval->string) {
1218 if (strlen(newval->string) < 1 ||
1219 !in4_pton(newval->string + 1, -1, (u8 *)&target, -1, NULL)) {
1220 netdev_err(bond->dev, "invalid ARP target specified\n");
1221 return ret;
1222 }
1223 if (newval->string[0] == '+')
1224 ret = bond_option_arp_ip_target_add(bond, target);
1225 else if (newval->string[0] == '-')
1226 ret = bond_option_arp_ip_target_rem(bond, target);
1227 else
1228 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1229 } else {
1230 target = newval->value;
1231 ret = bond_option_arp_ip_target_add(bond, target);
1232 }
1233
1234 return ret;
1235}
1236
1237#if IS_ENABLED(CONFIG_IPV6)
1238static bool slave_can_set_ns_maddr(const struct bonding *bond, struct slave *slave)
1239{
1240 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
1241 !bond_is_active_slave(slave) &&
1242 slave->dev->flags & IFF_MULTICAST;
1243}
1244
1245static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add)
1246{
1247 struct in6_addr *targets = bond->params.ns_targets;
1248 char slot_maddr[MAX_ADDR_LEN];
1249 int i;
1250
1251 if (!slave_can_set_ns_maddr(bond, slave))
1252 return;
1253
1254 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) {
1255 if (ipv6_addr_any(&targets[i]))
1256 break;
1257
1258 if (!ndisc_mc_map(&targets[i], slot_maddr, slave->dev, 0)) {
1259 if (add)
1260 dev_mc_add(slave->dev, slot_maddr);
1261 else
1262 dev_mc_del(slave->dev, slot_maddr);
1263 }
1264 }
1265}
1266
1267void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave)
1268{
1269 if (!bond->params.arp_validate)
1270 return;
1271 slave_set_ns_maddrs(bond, slave, true);
1272}
1273
1274void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave)
1275{
1276 if (!bond->params.arp_validate)
1277 return;
1278 slave_set_ns_maddrs(bond, slave, false);
1279}
1280
1281static void slave_set_ns_maddr(struct bonding *bond, struct slave *slave,
1282 struct in6_addr *target, struct in6_addr *slot)
1283{
1284 char target_maddr[MAX_ADDR_LEN], slot_maddr[MAX_ADDR_LEN];
1285
1286 if (!bond->params.arp_validate || !slave_can_set_ns_maddr(bond, slave))
1287 return;
1288
1289 /* remove the previous maddr from slave */
1290 if (!ipv6_addr_any(slot) &&
1291 !ndisc_mc_map(slot, slot_maddr, slave->dev, 0))
1292 dev_mc_del(slave->dev, slot_maddr);
1293
1294 /* add new maddr on slave if target is set */
1295 if (!ipv6_addr_any(target) &&
1296 !ndisc_mc_map(target, target_maddr, slave->dev, 0))
1297 dev_mc_add(slave->dev, target_maddr);
1298}
1299
1300static void _bond_options_ns_ip6_target_set(struct bonding *bond, int slot,
1301 struct in6_addr *target,
1302 unsigned long last_rx)
1303{
1304 struct in6_addr *targets = bond->params.ns_targets;
1305 struct list_head *iter;
1306 struct slave *slave;
1307
1308 if (slot >= 0 && slot < BOND_MAX_NS_TARGETS) {
1309 bond_for_each_slave(bond, slave, iter) {
1310 slave->target_last_arp_rx[slot] = last_rx;
1311 slave_set_ns_maddr(bond, slave, target, &targets[slot]);
1312 }
1313 targets[slot] = *target;
1314 }
1315}
1316
1317void bond_option_ns_ip6_targets_clear(struct bonding *bond)
1318{
1319 struct in6_addr addr_any = in6addr_any;
1320 int i;
1321
1322 for (i = 0; i < BOND_MAX_NS_TARGETS; i++)
1323 _bond_options_ns_ip6_target_set(bond, i, &addr_any, 0);
1324}
1325
1326static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1327 const struct bond_opt_value *newval)
1328{
1329 struct in6_addr *target = (struct in6_addr *)newval->extra;
1330 struct in6_addr *targets = bond->params.ns_targets;
1331 struct in6_addr addr_any = in6addr_any;
1332 int index;
1333
1334 if (!bond_is_ip6_target_ok(target)) {
1335 netdev_err(bond->dev, "invalid NS target %pI6c specified for addition\n",
1336 target);
1337 return -EINVAL;
1338 }
1339
1340 if (bond_get_targets_ip6(targets, target) != -1) { /* dup */
1341 netdev_err(bond->dev, "NS target %pI6c is already present\n",
1342 target);
1343 return -EINVAL;
1344 }
1345
1346 index = bond_get_targets_ip6(targets, &addr_any); /* first free slot */
1347 if (index == -1) {
1348 netdev_err(bond->dev, "NS target table is full!\n");
1349 return -EINVAL;
1350 }
1351
1352 netdev_dbg(bond->dev, "Adding NS target %pI6c\n", target);
1353
1354 _bond_options_ns_ip6_target_set(bond, index, target, jiffies);
1355
1356 return 0;
1357}
1358#else
1359static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1360 const struct bond_opt_value *newval)
1361{
1362 return -EPERM;
1363}
1364
1365static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add) {}
1366
1367void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave) {}
1368
1369void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave) {}
1370#endif
1371
1372static int bond_option_arp_validate_set(struct bonding *bond,
1373 const struct bond_opt_value *newval)
1374{
1375 bool changed = !!bond->params.arp_validate != !!newval->value;
1376 struct list_head *iter;
1377 struct slave *slave;
1378
1379 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n",
1380 newval->string, newval->value);
1381 bond->params.arp_validate = newval->value;
1382
1383 if (changed) {
1384 bond_for_each_slave(bond, slave, iter)
1385 slave_set_ns_maddrs(bond, slave, !!bond->params.arp_validate);
1386 }
1387
1388 return 0;
1389}
1390
1391static int bond_option_arp_all_targets_set(struct bonding *bond,
1392 const struct bond_opt_value *newval)
1393{
1394 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1395 newval->string, newval->value);
1396 bond->params.arp_all_targets = newval->value;
1397
1398 return 0;
1399}
1400
1401static int bond_option_missed_max_set(struct bonding *bond,
1402 const struct bond_opt_value *newval)
1403{
1404 netdev_dbg(bond->dev, "Setting missed max to %s (%llu)\n",
1405 newval->string, newval->value);
1406 bond->params.missed_max = newval->value;
1407
1408 return 0;
1409}
1410
1411static int bond_option_prio_set(struct bonding *bond,
1412 const struct bond_opt_value *newval)
1413{
1414 struct slave *slave;
1415
1416 slave = bond_slave_get_rtnl(newval->slave_dev);
1417 if (!slave) {
1418 netdev_dbg(newval->slave_dev, "%s called on NULL slave\n", __func__);
1419 return -ENODEV;
1420 }
1421 slave->prio = newval->value;
1422
1423 if (rtnl_dereference(bond->primary_slave))
1424 slave_warn(bond->dev, slave->dev,
1425 "prio updated, but will not affect failover re-selection as primary slave have been set\n");
1426 else
1427 bond_select_active_slave(bond);
1428
1429 return 0;
1430}
1431
1432static int bond_option_primary_set(struct bonding *bond,
1433 const struct bond_opt_value *newval)
1434{
1435 char *p, *primary = newval->string;
1436 struct list_head *iter;
1437 struct slave *slave;
1438
1439 block_netpoll_tx();
1440
1441 p = strchr(primary, '\n');
1442 if (p)
1443 *p = '\0';
1444 /* check to see if we are clearing primary */
1445 if (!strlen(primary)) {
1446 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1447 RCU_INIT_POINTER(bond->primary_slave, NULL);
1448 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1449 bond_select_active_slave(bond);
1450 goto out;
1451 }
1452
1453 bond_for_each_slave(bond, slave, iter) {
1454 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1455 slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n");
1456 rcu_assign_pointer(bond->primary_slave, slave);
1457 strcpy(bond->params.primary, slave->dev->name);
1458 bond->force_primary = true;
1459 bond_select_active_slave(bond);
1460 goto out;
1461 }
1462 }
1463
1464 if (rtnl_dereference(bond->primary_slave)) {
1465 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1466 RCU_INIT_POINTER(bond->primary_slave, NULL);
1467 bond_select_active_slave(bond);
1468 }
1469 strscpy_pad(bond->params.primary, primary, IFNAMSIZ);
1470
1471 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n",
1472 primary);
1473
1474out:
1475 unblock_netpoll_tx();
1476
1477 return 0;
1478}
1479
1480static int bond_option_primary_reselect_set(struct bonding *bond,
1481 const struct bond_opt_value *newval)
1482{
1483 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1484 newval->string, newval->value);
1485 bond->params.primary_reselect = newval->value;
1486
1487 block_netpoll_tx();
1488 bond_select_active_slave(bond);
1489 unblock_netpoll_tx();
1490
1491 return 0;
1492}
1493
1494static int bond_option_fail_over_mac_set(struct bonding *bond,
1495 const struct bond_opt_value *newval)
1496{
1497 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1498 newval->string, newval->value);
1499 bond->params.fail_over_mac = newval->value;
1500
1501 return 0;
1502}
1503
1504static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1505 const struct bond_opt_value *newval)
1506{
1507 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1508 newval->string, newval->value);
1509 bond->params.xmit_policy = newval->value;
1510
1511 return 0;
1512}
1513
1514static int bond_option_resend_igmp_set(struct bonding *bond,
1515 const struct bond_opt_value *newval)
1516{
1517 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n",
1518 newval->value);
1519 bond->params.resend_igmp = newval->value;
1520
1521 return 0;
1522}
1523
1524static int bond_option_num_peer_notif_set(struct bonding *bond,
1525 const struct bond_opt_value *newval)
1526{
1527 bond->params.num_peer_notif = newval->value;
1528
1529 return 0;
1530}
1531
1532static int bond_option_all_slaves_active_set(struct bonding *bond,
1533 const struct bond_opt_value *newval)
1534{
1535 struct list_head *iter;
1536 struct slave *slave;
1537
1538 if (newval->value == bond->params.all_slaves_active)
1539 return 0;
1540 bond->params.all_slaves_active = newval->value;
1541 bond_for_each_slave(bond, slave, iter) {
1542 if (!bond_is_active_slave(slave)) {
1543 if (newval->value)
1544 slave->inactive = 0;
1545 else
1546 slave->inactive = 1;
1547 }
1548 }
1549
1550 return 0;
1551}
1552
1553static int bond_option_min_links_set(struct bonding *bond,
1554 const struct bond_opt_value *newval)
1555{
1556 netdev_dbg(bond->dev, "Setting min links value to %llu\n",
1557 newval->value);
1558 bond->params.min_links = newval->value;
1559 bond_set_carrier(bond);
1560
1561 return 0;
1562}
1563
1564static int bond_option_lp_interval_set(struct bonding *bond,
1565 const struct bond_opt_value *newval)
1566{
1567 bond->params.lp_interval = newval->value;
1568
1569 return 0;
1570}
1571
1572static int bond_option_pps_set(struct bonding *bond,
1573 const struct bond_opt_value *newval)
1574{
1575 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n",
1576 newval->value);
1577 bond->params.packets_per_slave = newval->value;
1578 if (newval->value > 0) {
1579 bond->params.reciprocal_packets_per_slave =
1580 reciprocal_value(newval->value);
1581 } else {
1582 /* reciprocal_packets_per_slave is unused if
1583 * packets_per_slave is 0 or 1, just initialize it
1584 */
1585 bond->params.reciprocal_packets_per_slave =
1586 (struct reciprocal_value) { 0 };
1587 }
1588
1589 return 0;
1590}
1591
1592static int bond_option_lacp_active_set(struct bonding *bond,
1593 const struct bond_opt_value *newval)
1594{
1595 netdev_dbg(bond->dev, "Setting LACP active to %s (%llu)\n",
1596 newval->string, newval->value);
1597 bond->params.lacp_active = newval->value;
1598
1599 return 0;
1600}
1601
1602static int bond_option_lacp_rate_set(struct bonding *bond,
1603 const struct bond_opt_value *newval)
1604{
1605 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n",
1606 newval->string, newval->value);
1607 bond->params.lacp_fast = newval->value;
1608 bond_3ad_update_lacp_rate(bond);
1609
1610 return 0;
1611}
1612
1613static int bond_option_ad_select_set(struct bonding *bond,
1614 const struct bond_opt_value *newval)
1615{
1616 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n",
1617 newval->string, newval->value);
1618 bond->params.ad_select = newval->value;
1619
1620 return 0;
1621}
1622
1623static int bond_option_queue_id_set(struct bonding *bond,
1624 const struct bond_opt_value *newval)
1625{
1626 struct slave *slave, *update_slave;
1627 struct net_device *sdev;
1628 struct list_head *iter;
1629 char *delim;
1630 int ret = 0;
1631 u16 qid;
1632
1633 /* delim will point to queue id if successful */
1634 delim = strchr(newval->string, ':');
1635 if (!delim)
1636 goto err_no_cmd;
1637
1638 /* Terminate string that points to device name and bump it
1639 * up one, so we can read the queue id there.
1640 */
1641 *delim = '\0';
1642 if (sscanf(++delim, "%hd\n", &qid) != 1)
1643 goto err_no_cmd;
1644
1645 /* Check buffer length, valid ifname and queue id */
1646 if (!dev_valid_name(newval->string) ||
1647 qid > bond->dev->real_num_tx_queues)
1648 goto err_no_cmd;
1649
1650 /* Get the pointer to that interface if it exists */
1651 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1652 if (!sdev)
1653 goto err_no_cmd;
1654
1655 /* Search for thes slave and check for duplicate qids */
1656 update_slave = NULL;
1657 bond_for_each_slave(bond, slave, iter) {
1658 if (sdev == slave->dev)
1659 /* We don't need to check the matching
1660 * slave for dups, since we're overwriting it
1661 */
1662 update_slave = slave;
1663 else if (qid && qid == slave->queue_id) {
1664 goto err_no_cmd;
1665 }
1666 }
1667
1668 if (!update_slave)
1669 goto err_no_cmd;
1670
1671 /* Actually set the qids for the slave */
1672 WRITE_ONCE(update_slave->queue_id, qid);
1673
1674out:
1675 return ret;
1676
1677err_no_cmd:
1678 netdev_dbg(bond->dev, "invalid input for queue_id set\n");
1679 ret = -EPERM;
1680 goto out;
1681
1682}
1683
1684static int bond_option_slaves_set(struct bonding *bond,
1685 const struct bond_opt_value *newval)
1686{
1687 char command[IFNAMSIZ + 1] = { 0, };
1688 struct net_device *dev;
1689 char *ifname;
1690 int ret;
1691
1692 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1693 ifname = command + 1;
1694 if ((strlen(command) <= 1) ||
1695 (command[0] != '+' && command[0] != '-') ||
1696 !dev_valid_name(ifname))
1697 goto err_no_cmd;
1698
1699 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1700 if (!dev) {
1701 netdev_dbg(bond->dev, "interface %s does not exist!\n",
1702 ifname);
1703 ret = -ENODEV;
1704 goto out;
1705 }
1706
1707 switch (command[0]) {
1708 case '+':
1709 slave_dbg(bond->dev, dev, "Enslaving interface\n");
1710 ret = bond_enslave(bond->dev, dev, NULL);
1711 break;
1712
1713 case '-':
1714 slave_dbg(bond->dev, dev, "Releasing interface\n");
1715 ret = bond_release(bond->dev, dev);
1716 break;
1717
1718 default:
1719 /* should not run here. */
1720 goto err_no_cmd;
1721 }
1722
1723out:
1724 return ret;
1725
1726err_no_cmd:
1727 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1728 ret = -EPERM;
1729 goto out;
1730}
1731
1732static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1733 const struct bond_opt_value *newval)
1734{
1735 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1736 newval->string, newval->value);
1737 bond->params.tlb_dynamic_lb = newval->value;
1738
1739 return 0;
1740}
1741
1742static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1743 const struct bond_opt_value *newval)
1744{
1745 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1746 newval->value);
1747
1748 bond->params.ad_actor_sys_prio = newval->value;
1749 bond_3ad_update_ad_actor_settings(bond);
1750
1751 return 0;
1752}
1753
1754static int bond_option_ad_actor_system_set(struct bonding *bond,
1755 const struct bond_opt_value *newval)
1756{
1757 u8 macaddr[ETH_ALEN];
1758 u8 *mac;
1759
1760 if (newval->string) {
1761 if (!mac_pton(newval->string, macaddr))
1762 goto err;
1763 mac = macaddr;
1764 } else {
1765 mac = (u8 *)&newval->value;
1766 }
1767
1768 if (is_multicast_ether_addr(mac))
1769 goto err;
1770
1771 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1772 ether_addr_copy(bond->params.ad_actor_system, mac);
1773 bond_3ad_update_ad_actor_settings(bond);
1774
1775 return 0;
1776
1777err:
1778 netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n");
1779 return -EINVAL;
1780}
1781
1782static int bond_option_ad_user_port_key_set(struct bonding *bond,
1783 const struct bond_opt_value *newval)
1784{
1785 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n",
1786 newval->value);
1787
1788 bond->params.ad_user_port_key = newval->value;
1789 return 0;
1790}
1791
1792static int bond_option_coupled_control_set(struct bonding *bond,
1793 const struct bond_opt_value *newval)
1794{
1795 netdev_info(bond->dev, "Setting coupled_control to %s (%llu)\n",
1796 newval->string, newval->value);
1797
1798 bond->params.coupled_control = newval->value;
1799 return 0;
1800}