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net_sched: htb: do not acquire qdisc lock in dump operations
[deliverable/linux.git] / drivers / net / bonding / bond_options.c
CommitLineData
72be35fe
JP		 1/*
2 * drivers/net/bond/bond_options.c - bonding options
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
eecdaa6e 4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
72be35fe
JP		 5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14#include <linux/errno.h>
15#include <linux/if.h>
d9e32b21 16#include <linux/netdevice.h>
eb2d4c64 17#include <linux/spinlock.h>
d9e32b21 18#include <linux/rcupdate.h>
09117362 19#include <linux/ctype.h>
4fb0ef58 20#include <linux/inet.h>
72be35fe
JP		 21#include "bonding.h"
22
f3253339 23static int bond_option_active_slave_set(struct bonding *bond,
24 struct bond_opt_value *newval);
25static int bond_option_miimon_set(struct bonding *bond,
26 struct bond_opt_value *newval);
27static int bond_option_updelay_set(struct bonding *bond,
28 struct bond_opt_value *newval);
29static int bond_option_downdelay_set(struct bonding *bond,
30 struct bond_opt_value *newval);
31static int bond_option_use_carrier_set(struct bonding *bond,
32 struct bond_opt_value *newval);
33static int bond_option_arp_interval_set(struct bonding *bond,
34 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 struct bond_opt_value *newval);
39static int bond_option_arp_validate_set(struct bonding *bond,
40 struct bond_opt_value *newval);
41static int bond_option_arp_all_targets_set(struct bonding *bond,
42 struct bond_opt_value *newval);
43static int bond_option_primary_set(struct bonding *bond,
44 struct bond_opt_value *newval);
45static int bond_option_primary_reselect_set(struct bonding *bond,
46 struct bond_opt_value *newval);
47static int bond_option_fail_over_mac_set(struct bonding *bond,
48 struct bond_opt_value *newval);
49static int bond_option_xmit_hash_policy_set(struct bonding *bond,
50 struct bond_opt_value *newval);
51static int bond_option_resend_igmp_set(struct bonding *bond,
52 struct bond_opt_value *newval);
53static int bond_option_num_peer_notif_set(struct bonding *bond,
54 struct bond_opt_value *newval);
55static int bond_option_all_slaves_active_set(struct bonding *bond,
56 struct bond_opt_value *newval);
57static int bond_option_min_links_set(struct bonding *bond,
58 struct bond_opt_value *newval);
59static int bond_option_lp_interval_set(struct bonding *bond,
60 struct bond_opt_value *newval);
61static int bond_option_pps_set(struct bonding *bond,
62 struct bond_opt_value *newval);
63static int bond_option_lacp_rate_set(struct bonding *bond,
64 struct bond_opt_value *newval);
65static int bond_option_ad_select_set(struct bonding *bond,
66 struct bond_opt_value *newval);
67static int bond_option_queue_id_set(struct bonding *bond,
68 struct bond_opt_value *newval);
69static int bond_option_mode_set(struct bonding *bond,
70 struct bond_opt_value *newval);
71static int bond_option_slaves_set(struct bonding *bond,
72 struct bond_opt_value *newval);
73
74
75static const struct bond_opt_value bond_mode_tbl[] = {
2b3798d5
NA		 76 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
77 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
78 { "balance-xor", BOND_MODE_XOR, 0},
79 { "broadcast", BOND_MODE_BROADCAST, 0},
80 { "802.3ad", BOND_MODE_8023AD, 0},
81 { "balance-tlb", BOND_MODE_TLB, 0},
82 { "balance-alb", BOND_MODE_ALB, 0},
83 { NULL, -1, 0},
84};
85
f3253339 86static const struct bond_opt_value bond_pps_tbl[] = {
aa59d851
NA		 87 { "default", 1, BOND_VALFLAG_DEFAULT},
88 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
89 { NULL, -1, 0},
90};
91
f3253339 92static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
a4b32ce7
NA		 93 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
94 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
95 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
96 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
97 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
98 { NULL, -1, 0},
99};
100
f3253339 101static const struct bond_opt_value bond_arp_validate_tbl[] = {
896149ff
VF		 102 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
103 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
104 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
105 { "all", BOND_ARP_VALIDATE_ALL, 0},
106 { "filter", BOND_ARP_FILTER, 0},
107 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
108 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
109 { NULL, -1, 0},
16228881
NA		 110};
111
f3253339 112static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
edf36b24
NA		 113 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
114 { "all", BOND_ARP_TARGETS_ALL, 0},
115 { NULL, -1, 0},
116};
117
f3253339 118static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
1df6b6aa
NA		 119 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
120 { "active", BOND_FOM_ACTIVE, 0},
121 { "follow", BOND_FOM_FOLLOW, 0},
122 { NULL, -1, 0},
123};
124
f3253339 125static const struct bond_opt_value bond_intmax_tbl[] = {
7bdb04ed
NA		 126 { "off", 0, BOND_VALFLAG_DEFAULT},
127 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
128};
129
f3253339 130static const struct bond_opt_value bond_lacp_rate_tbl[] = {
d3131de7
NA		 131 { "slow", AD_LACP_SLOW, 0},
132 { "fast", AD_LACP_FAST, 0},
133 { NULL, -1, 0},
134};
135
f3253339 136static const struct bond_opt_value bond_ad_select_tbl[] = {
9e5f5eeb
NA		 137 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
138 { "bandwidth", BOND_AD_BANDWIDTH, 0},
139 { "count", BOND_AD_COUNT, 0},
140 { NULL, -1, 0},
141};
142
f3253339 143static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
ef56becb
NA		 144 { "off", 0, 0},
145 { "maxval", 255, BOND_VALFLAG_MAX},
146 { "default", 1, BOND_VALFLAG_DEFAULT},
147 { NULL, -1, 0}
148};
149
f3253339 150static const struct bond_opt_value bond_primary_reselect_tbl[] = {
388d3a6d
NA		 151 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
152 { "better", BOND_PRI_RESELECT_BETTER, 0},
153 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
154 { NULL, -1},
155};
156
f3253339 157static const struct bond_opt_value bond_use_carrier_tbl[] = {
0fff0608
NA		 158 { "off", 0, 0},
159 { "on", 1, BOND_VALFLAG_DEFAULT},
160 { NULL, -1, 0}
161};
162
f3253339 163static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
3df01162
NA		 164 { "off", 0, BOND_VALFLAG_DEFAULT},
165 { "on", 1, 0},
166 { NULL, -1, 0}
167};
168
f3253339 169static const struct bond_opt_value bond_resend_igmp_tbl[] = {
105c8fb6
NA		 170 { "off", 0, 0},
171 { "maxval", 255, BOND_VALFLAG_MAX},
172 { "default", 1, BOND_VALFLAG_DEFAULT},
173 { NULL, -1, 0}
174};
175
f3253339 176static const struct bond_opt_value bond_lp_interval_tbl[] = {
4325b374
NA		 177 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
178 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
179};
180
f3253339 181static const struct bond_option bond_opts[] = {
2b3798d5
NA		 182 [BOND_OPT_MODE] = {
183 .id = BOND_OPT_MODE,
184 .name = "mode",
185 .desc = "bond device mode",
186 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
187 .values = bond_mode_tbl,
188 .set = bond_option_mode_set
189 },
aa59d851
NA		 190 [BOND_OPT_PACKETS_PER_SLAVE] = {
191 .id = BOND_OPT_PACKETS_PER_SLAVE,
192 .name = "packets_per_slave",
193 .desc = "Packets to send per slave in RR mode",
194 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
195 .values = bond_pps_tbl,
196 .set = bond_option_pps_set
197 },
a4b32ce7
NA		 198 [BOND_OPT_XMIT_HASH] = {
199 .id = BOND_OPT_XMIT_HASH,
200 .name = "xmit_hash_policy",
201 .desc = "balance-xor and 802.3ad hashing method",
202 .values = bond_xmit_hashtype_tbl,
203 .set = bond_option_xmit_hash_policy_set
204 },
16228881
NA		 205 [BOND_OPT_ARP_VALIDATE] = {
206 .id = BOND_OPT_ARP_VALIDATE,
207 .name = "arp_validate",
208 .desc = "validate src/dst of ARP probes",
13ac34a8
VF		 209 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
210 BIT(BOND_MODE_ALB),
16228881
NA		 211 .values = bond_arp_validate_tbl,
212 .set = bond_option_arp_validate_set
213 },
edf36b24
NA		 214 [BOND_OPT_ARP_ALL_TARGETS] = {
215 .id = BOND_OPT_ARP_ALL_TARGETS,
216 .name = "arp_all_targets",
217 .desc = "fail on any/all arp targets timeout",
218 .values = bond_arp_all_targets_tbl,
219 .set = bond_option_arp_all_targets_set
220 },
1df6b6aa
NA		 221 [BOND_OPT_FAIL_OVER_MAC] = {
222 .id = BOND_OPT_FAIL_OVER_MAC,
223 .name = "fail_over_mac",
224 .desc = "For active-backup, do not set all slaves to the same MAC",
225 .flags = BOND_OPTFLAG_NOSLAVES,
226 .values = bond_fail_over_mac_tbl,
227 .set = bond_option_fail_over_mac_set
228 },
7bdb04ed
NA		 229 [BOND_OPT_ARP_INTERVAL] = {
230 .id = BOND_OPT_ARP_INTERVAL,
231 .name = "arp_interval",
232 .desc = "arp interval in milliseconds",
233 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
234 BIT(BOND_MODE_ALB),
235 .values = bond_intmax_tbl,
236 .set = bond_option_arp_interval_set
237 },
4fb0ef58
NA		 238 [BOND_OPT_ARP_TARGETS] = {
239 .id = BOND_OPT_ARP_TARGETS,
240 .name = "arp_ip_target",
241 .desc = "arp targets in n.n.n.n form",
242 .flags = BOND_OPTFLAG_RAWVAL,
243 .set = bond_option_arp_ip_targets_set
244 },
25a9b54a
NA		 245 [BOND_OPT_DOWNDELAY] = {
246 .id = BOND_OPT_DOWNDELAY,
247 .name = "downdelay",
248 .desc = "Delay before considering link down, in milliseconds",
249 .values = bond_intmax_tbl,
250 .set = bond_option_downdelay_set
251 },
e4994612
NA		 252 [BOND_OPT_UPDELAY] = {
253 .id = BOND_OPT_UPDELAY,
254 .name = "updelay",
255 .desc = "Delay before considering link up, in milliseconds",
256 .values = bond_intmax_tbl,
257 .set = bond_option_updelay_set
258 },
d3131de7
NA		 259 [BOND_OPT_LACP_RATE] = {
260 .id = BOND_OPT_LACP_RATE,
261 .name = "lacp_rate",
262 .desc = "LACPDU tx rate to request from 802.3ad partner",
263 .flags = BOND_OPTFLAG_IFDOWN,
264 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
265 .values = bond_lacp_rate_tbl,
266 .set = bond_option_lacp_rate_set
267 },
633ddc9e
NA		 268 [BOND_OPT_MINLINKS] = {
269 .id = BOND_OPT_MINLINKS,
270 .name = "min_links",
271 .desc = "Minimum number of available links before turning on carrier",
272 .values = bond_intmax_tbl,
273 .set = bond_option_min_links_set
274 },
9e5f5eeb
NA		 275 [BOND_OPT_AD_SELECT] = {
276 .id = BOND_OPT_AD_SELECT,
277 .name = "ad_select",
278 .desc = "803.ad aggregation selection logic",
279 .flags = BOND_OPTFLAG_IFDOWN,
280 .values = bond_ad_select_tbl,
281 .set = bond_option_ad_select_set
282 },
ef56becb
NA		 283 [BOND_OPT_NUM_PEER_NOTIF] = {
284 .id = BOND_OPT_NUM_PEER_NOTIF,
285 .name = "num_unsol_na",
286 .desc = "Number of peer notifications to send on failover event",
287 .values = bond_num_peer_notif_tbl,
288 .set = bond_option_num_peer_notif_set
289 },
b98d9c66
NA		 290 [BOND_OPT_MIIMON] = {
291 .id = BOND_OPT_MIIMON,
292 .name = "miimon",
293 .desc = "Link check interval in milliseconds",
294 .values = bond_intmax_tbl,
295 .set = bond_option_miimon_set
296 },
180222f0
NA		 297 [BOND_OPT_PRIMARY] = {
298 .id = BOND_OPT_PRIMARY,
299 .name = "primary",
300 .desc = "Primary network device to use",
301 .flags = BOND_OPTFLAG_RAWVAL,
302 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
303 BIT(BOND_MODE_TLB) |
304 BIT(BOND_MODE_ALB)),
305 .set = bond_option_primary_set
306 },
388d3a6d
NA		 307 [BOND_OPT_PRIMARY_RESELECT] = {
308 .id = BOND_OPT_PRIMARY_RESELECT,
309 .name = "primary_reselect",
310 .desc = "Reselect primary slave once it comes up",
311 .values = bond_primary_reselect_tbl,
312 .set = bond_option_primary_reselect_set
313 },
0fff0608
NA		 314 [BOND_OPT_USE_CARRIER] = {
315 .id = BOND_OPT_USE_CARRIER,
316 .name = "use_carrier",
317 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
318 .values = bond_use_carrier_tbl,
319 .set = bond_option_use_carrier_set
320 },
d1fbd3ed
NA		 321 [BOND_OPT_ACTIVE_SLAVE] = {
322 .id = BOND_OPT_ACTIVE_SLAVE,
323 .name = "active_slave",
324 .desc = "Currently active slave",
325 .flags = BOND_OPTFLAG_RAWVAL,
326 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
327 BIT(BOND_MODE_TLB) |
328 BIT(BOND_MODE_ALB)),
329 .set = bond_option_active_slave_set
330 },
24089ba1
NA		 331 [BOND_OPT_QUEUE_ID] = {
332 .id = BOND_OPT_QUEUE_ID,
333 .name = "queue_id",
334 .desc = "Set queue id of a slave",
335 .flags = BOND_OPTFLAG_RAWVAL,
336 .set = bond_option_queue_id_set
337 },
3df01162
NA		 338 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
339 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
340 .name = "all_slaves_active",
341 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
342 .values = bond_all_slaves_active_tbl,
343 .set = bond_option_all_slaves_active_set
344 },
105c8fb6
NA		 345 [BOND_OPT_RESEND_IGMP] = {
346 .id = BOND_OPT_RESEND_IGMP,
347 .name = "resend_igmp",
348 .desc = "Number of IGMP membership reports to send on link failure",
349 .values = bond_resend_igmp_tbl,
350 .set = bond_option_resend_igmp_set
351 },
4325b374
NA		 352 [BOND_OPT_LP_INTERVAL] = {
353 .id = BOND_OPT_LP_INTERVAL,
354 .name = "lp_interval",
355 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
356 .values = bond_lp_interval_tbl,
357 .set = bond_option_lp_interval_set
358 },
0e2e5b66
NA		 359 [BOND_OPT_SLAVES] = {
360 .id = BOND_OPT_SLAVES,
361 .name = "slaves",
362 .desc = "Slave membership management",
363 .flags = BOND_OPTFLAG_RAWVAL,
364 .set = bond_option_slaves_set
365 },
09117362
NA		 366 { }
367};
368
369/* Searches for a value in opt's values[] table */
f3253339 370const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
09117362 371{
f3253339 372 const struct bond_option *opt;
09117362
NA		 373 int i;
374
375 opt = bond_opt_get(option);
376 if (WARN_ON(!opt))
377 return NULL;
378 for (i = 0; opt->values && opt->values[i].string; i++)
379 if (opt->values[i].value == val)
380 return &opt->values[i];
381
382 return NULL;
383}
384
385/* Searches for a value in opt's values[] table which matches the flagmask */
f3253339 386static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
09117362
NA		 387 u32 flagmask)
388{
389 int i;
390
391 for (i = 0; opt->values && opt->values[i].string; i++)
392 if (opt->values[i].flags & flagmask)
393 return &opt->values[i];
394
395 return NULL;
396}
397
398/* If maxval is missing then there's no range to check. In case minval is
399 * missing then it's considered to be 0.
400 */
401static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
402{
f3253339 403 const struct bond_opt_value *minval, *maxval;
09117362
NA		 404
405 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
406 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
407 if (!maxval || (minval && val < minval->value) || val > maxval->value)
408 return false;
409
410 return true;
411}
412
413/**
414 * bond_opt_parse - parse option value
415 * @opt: the option to parse against
416 * @val: value to parse
417 *
418 * This function tries to extract the value from @val and check if it's
419 * a possible match for the option and returns NULL if a match isn't found,
420 * or the struct_opt_value that matched. It also strips the new line from
421 * @val->string if it's present.
422 */
f3253339 423const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
424 struct bond_opt_value *val)
09117362
NA		 425{
426 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
f3253339 427 const struct bond_opt_value *tbl;
428 const struct bond_opt_value *ret = NULL;
09117362
NA		 429 bool checkval;
430 int i, rv;
431
432 /* No parsing if the option wants a raw val */
433 if (opt->flags & BOND_OPTFLAG_RAWVAL)
434 return val;
435
436 tbl = opt->values;
437 if (!tbl)
438 goto out;
439
440 /* ULLONG_MAX is used to bypass string processing */
441 checkval = val->value != ULLONG_MAX;
442 if (!checkval) {
443 if (!val->string)
444 goto out;
445 p = strchr(val->string, '\n');
446 if (p)
447 *p = '\0';
448 for (p = val->string; *p; p++)
449 if (!(isdigit(*p) || isspace(*p)))
450 break;
451 /* The following code extracts the string to match or the value
452 * and sets checkval appropriately
453 */
454 if (*p) {
455 rv = sscanf(val->string, "%32s", valstr);
456 } else {
457 rv = sscanf(val->string, "%llu", &val->value);
458 checkval = true;
459 }
460 if (!rv)
461 goto out;
462 }
463
464 for (i = 0; tbl[i].string; i++) {
465 /* Check for exact match */
466 if (checkval) {
467 if (val->value == tbl[i].value)
468 ret = &tbl[i];
469 } else {
470 if (!strcmp(valstr, "default") &&
471 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
472 ret = &tbl[i];
473
474 if (!strcmp(valstr, tbl[i].string))
475 ret = &tbl[i];
476 }
477 /* Found an exact match */
478 if (ret)
479 goto out;
480 }
481 /* Possible range match */
482 if (checkval && bond_opt_check_range(opt, val->value))
483 ret = val;
484out:
485 return ret;
486}
487
488/* Check opt's dependencies against bond mode and currently set options */
489static int bond_opt_check_deps(struct bonding *bond,
490 const struct bond_option *opt)
491{
492 struct bond_params *params = &bond->params;
493
494 if (test_bit(params->mode, &opt->unsuppmodes))
495 return -EACCES;
496 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
497 return -ENOTEMPTY;
498 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
499 return -EBUSY;
500
501 return 0;
502}
503
504static void bond_opt_dep_print(struct bonding *bond,
505 const struct bond_option *opt)
506{
2b3798d5 507 struct bond_opt_value *modeval;
09117362
NA		 508 struct bond_params *params;
509
510 params = &bond->params;
2b3798d5 511 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
09117362 512 if (test_bit(params->mode, &opt->unsuppmodes))
2b3798d5
NA		 513 pr_err("%s: option %s: mode dependency failed, not supported in mode %s(%llu)\n",
514 bond->dev->name, opt->name,
515 modeval->string, modeval->value);
09117362
NA		 516}
517
518static void bond_opt_error_interpret(struct bonding *bond,
519 const struct bond_option *opt,
520 int error, struct bond_opt_value *val)
521{
522 struct bond_opt_value *minval, *maxval;
523 char *p;
524
525 switch (error) {
526 case -EINVAL:
527 if (val) {
528 if (val->string) {
529 /* sometimes RAWVAL opts may have new lines */
530 p = strchr(val->string, '\n');
531 if (p)
532 *p = '\0';
90194264 533 pr_err("%s: option %s: invalid value (%s)\n",
09117362
NA		 534 bond->dev->name, opt->name, val->string);
535 } else {
90194264 536 pr_err("%s: option %s: invalid value (%llu)\n",
09117362
NA		 537 bond->dev->name, opt->name, val->value);
538 }
539 }
540 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
541 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
542 if (!maxval)
543 break;
90194264 544 pr_err("%s: option %s: allowed values %llu - %llu\n",
09117362
NA		 545 bond->dev->name, opt->name, minval ? minval->value : 0,
546 maxval->value);
547 break;
548 case -EACCES:
549 bond_opt_dep_print(bond, opt);
550 break;
551 case -ENOTEMPTY:
90194264 552 pr_err("%s: option %s: unable to set because the bond device has slaves\n",
09117362
NA		 553 bond->dev->name, opt->name);
554 break;
555 case -EBUSY:
90194264 556 pr_err("%s: option %s: unable to set because the bond device is up\n",
09117362
NA		 557 bond->dev->name, opt->name);
558 break;
559 default:
560 break;
561 }
562}
563
564/**
565 * __bond_opt_set - set a bonding option
566 * @bond: target bond device
567 * @option: option to set
568 * @val: value to set it to
569 *
570 * This function is used to change the bond's option value, it can be
571 * used for both enabling/changing an option and for disabling it. RTNL lock
572 * must be obtained before calling this function.
573 */
574int __bond_opt_set(struct bonding *bond,
575 unsigned int option, struct bond_opt_value *val)
576{
577 struct bond_opt_value *retval = NULL;
578 const struct bond_option *opt;
579 int ret = -ENOENT;
580
581 ASSERT_RTNL();
582
583 opt = bond_opt_get(option);
584 if (WARN_ON(!val) || WARN_ON(!opt))
585 goto out;
586 ret = bond_opt_check_deps(bond, opt);
587 if (ret)
588 goto out;
589 retval = bond_opt_parse(opt, val);
590 if (!retval) {
591 ret = -EINVAL;
592 goto out;
593 }
594 ret = opt->set(bond, retval);
595out:
596 if (ret)
597 bond_opt_error_interpret(bond, opt, ret, val);
598
599 return ret;
600}
601
602/**
603 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
604 * @bond: target bond device
605 * @option: option to set
606 * @buf: value to set it to
607 *
608 * This function tries to acquire RTNL without blocking and if successful
609 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
610 */
611int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
612{
613 struct bond_opt_value optval;
614 int ret;
615
616 if (!rtnl_trylock())
617 return restart_syscall();
618 bond_opt_initstr(&optval, buf);
619 ret = __bond_opt_set(bond, option, &optval);
620 rtnl_unlock();
621
622 return ret;
623}
624
625/**
626 * bond_opt_get - get a pointer to an option
627 * @option: option for which to return a pointer
628 *
629 * This function checks if option is valid and if so returns a pointer
630 * to its entry in the bond_opts[] option array.
631 */
f3253339 632const struct bond_option *bond_opt_get(unsigned int option)
09117362
NA		 633{
634 if (!BOND_OPT_VALID(option))
635 return NULL;
636
637 return &bond_opts[option];
638}
639
2b3798d5 640int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval)
72be35fe 641{
2b3798d5 642 if (BOND_NO_USES_ARP(newval->value) && bond->params.arp_interval) {
fe9d04af 643 pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n",
2b3798d5 644 bond->dev->name, newval->string);
fe9d04af 645 /* disable arp monitoring */
646 bond->params.arp_interval = 0;
647 /* set miimon to default value */
648 bond->params.miimon = BOND_DEFAULT_MIIMON;
90194264 649 pr_info("%s: Setting MII monitoring interval to %d\n",
fe9d04af 650 bond->dev->name, bond->params.miimon);
72be35fe
JP		 651 }
652
653 /* don't cache arp_validate between modes */
654 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
2b3798d5
NA		 655 bond->params.mode = newval->value;
656
72be35fe
JP		 657 return 0;
658}
d9e32b21 659
752d48b5
JP		 660static struct net_device *__bond_option_active_slave_get(struct bonding *bond,
661 struct slave *slave)
662{
663 return USES_PRIMARY(bond->params.mode) && slave ? slave->dev : NULL;
664}
665
666struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
667{
668 struct slave *slave = rcu_dereference(bond->curr_active_slave);
669
670 return __bond_option_active_slave_get(bond, slave);
671}
672
673struct net_device *bond_option_active_slave_get(struct bonding *bond)
674{
675 return __bond_option_active_slave_get(bond, bond->curr_active_slave);
676}
677
f3253339 678static int bond_option_active_slave_set(struct bonding *bond,
679 struct bond_opt_value *newval)
d9e32b21 680{
d1fbd3ed
NA		 681 char ifname[IFNAMSIZ] = { 0, };
682 struct net_device *slave_dev;
d9e32b21
JP		 683 int ret = 0;
684
d1fbd3ed
NA		 685 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
686 if (!strlen(ifname) || newval->string[0] == '\n') {
687 slave_dev = NULL;
688 } else {
689 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
690 if (!slave_dev)
691 return -ENODEV;
692 }
693
d9e32b21
JP		 694 if (slave_dev) {
695 if (!netif_is_bond_slave(slave_dev)) {
90194264 696 pr_err("Device %s is not bonding slave\n",
d9e32b21
JP		 697 slave_dev->name);
698 return -EINVAL;
699 }
700
701 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
90194264 702 pr_err("%s: Device %s is not our slave\n",
d9e32b21
JP		 703 bond->dev->name, slave_dev->name);
704 return -EINVAL;
705 }
706 }
707
d9e32b21 708 block_netpoll_tx();
d9e32b21
JP		 709 write_lock_bh(&bond->curr_slave_lock);
710
711 /* check to see if we are clearing active */
712 if (!slave_dev) {
90194264 713 pr_info("%s: Clearing current active slave\n", bond->dev->name);
d9e32b21
JP		 714 rcu_assign_pointer(bond->curr_active_slave, NULL);
715 bond_select_active_slave(bond);
716 } else {
717 struct slave *old_active = bond->curr_active_slave;
718 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
719
720 BUG_ON(!new_active);
721
722 if (new_active == old_active) {
723 /* do nothing */
90194264 724 pr_info("%s: %s is already the current active slave\n",
d9e32b21
JP		 725 bond->dev->name, new_active->dev->name);
726 } else {
727 if (old_active && (new_active->link == BOND_LINK_UP) &&
728 IS_UP(new_active->dev)) {
90194264 729 pr_info("%s: Setting %s as active slave\n",
d9e32b21
JP		 730 bond->dev->name, new_active->dev->name);
731 bond_change_active_slave(bond, new_active);
732 } else {
90194264 733 pr_err("%s: Could not set %s as active slave; either %s is down or the link is down\n",
d9e32b21
JP		 734 bond->dev->name, new_active->dev->name,
735 new_active->dev->name);
736 ret = -EINVAL;
737 }
738 }
739 }
740
741 write_unlock_bh(&bond->curr_slave_lock);
d9e32b21 742 unblock_netpoll_tx();
d1fbd3ed 743
d9e32b21
JP		 744 return ret;
745}
eecdaa6e 746
f3253339 747static int bond_option_miimon_set(struct bonding *bond,
748 struct bond_opt_value *newval)
eecdaa6e 749{
90194264 750 pr_info("%s: Setting MII monitoring interval to %llu\n",
b98d9c66
NA		 751 bond->dev->name, newval->value);
752 bond->params.miimon = newval->value;
eecdaa6e 753 if (bond->params.updelay)
90194264 754 pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
eecdaa6e 755 bond->dev->name,
756 bond->params.updelay * bond->params.miimon);
757 if (bond->params.downdelay)
90194264 758 pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
eecdaa6e 759 bond->dev->name,
760 bond->params.downdelay * bond->params.miimon);
b98d9c66 761 if (newval->value && bond->params.arp_interval) {
90194264 762 pr_info("%s: MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n",
eecdaa6e 763 bond->dev->name);
764 bond->params.arp_interval = 0;
765 if (bond->params.arp_validate)
766 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
767 }
768 if (bond->dev->flags & IFF_UP) {
769 /* If the interface is up, we may need to fire off
770 * the MII timer. If the interface is down, the
771 * timer will get fired off when the open function
772 * is called.
773 */
b98d9c66 774 if (!newval->value) {
eecdaa6e 775 cancel_delayed_work_sync(&bond->mii_work);
776 } else {
777 cancel_delayed_work_sync(&bond->arp_work);
778 queue_delayed_work(bond->wq, &bond->mii_work, 0);
779 }
780 }
b98d9c66 781
eecdaa6e 782 return 0;
783}
25852e29 784
f3253339 785static int bond_option_updelay_set(struct bonding *bond,
786 struct bond_opt_value *newval)
25852e29 787{
0681a282
NA		 788 int value = newval->value;
789
e4994612 790 if (!bond->params.miimon) {
25852e29 791 pr_err("%s: Unable to set up delay as MII monitoring is disabled\n",
792 bond->dev->name);
793 return -EPERM;
794 }
0681a282
NA		 795 if ((value % bond->params.miimon) != 0) {
796 pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
797 bond->dev->name, value,
e4994612 798 bond->params.miimon,
0681a282 799 (value / bond->params.miimon) *
e4994612 800 bond->params.miimon);
25852e29 801 }
0681a282 802 bond->params.updelay = value / bond->params.miimon;
90194264
JP		 803 pr_info("%s: Setting up delay to %d\n",
804 bond->dev->name, bond->params.updelay * bond->params.miimon);
25852e29 805
806 return 0;
807}
c7461f9b 808
f3253339 809static int bond_option_downdelay_set(struct bonding *bond,
810 struct bond_opt_value *newval)
c7461f9b 811{
0681a282
NA		 812 int value = newval->value;
813
25a9b54a 814 if (!bond->params.miimon) {
c7461f9b 815 pr_err("%s: Unable to set down delay as MII monitoring is disabled\n",
816 bond->dev->name);
817 return -EPERM;
818 }
0681a282
NA		 819 if ((value % bond->params.miimon) != 0) {
820 pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
821 bond->dev->name, value,
25a9b54a 822 bond->params.miimon,
0681a282 823 (value / bond->params.miimon) *
25a9b54a 824 bond->params.miimon);
c7461f9b 825 }
0681a282 826 bond->params.downdelay = value / bond->params.miimon;
90194264
JP		 827 pr_info("%s: Setting down delay to %d\n",
828 bond->dev->name, bond->params.downdelay * bond->params.miimon);
c7461f9b 829
830 return 0;
831}
9f53e14e 832
f3253339 833static int bond_option_use_carrier_set(struct bonding *bond,
834 struct bond_opt_value *newval)
9f53e14e 835{
90194264 836 pr_info("%s: Setting use_carrier to %llu\n",
0fff0608
NA		 837 bond->dev->name, newval->value);
838 bond->params.use_carrier = newval->value;
9f53e14e 839
840 return 0;
841}
06151dbc 842
f3253339 843static int bond_option_arp_interval_set(struct bonding *bond,
844 struct bond_opt_value *newval)
06151dbc 845{
90194264 846 pr_info("%s: Setting ARP monitoring interval to %llu\n",
7bdb04ed
NA		 847 bond->dev->name, newval->value);
848 bond->params.arp_interval = newval->value;
849 if (newval->value) {
06151dbc 850 if (bond->params.miimon) {
90194264 851 pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring\n",
06151dbc 852 bond->dev->name, bond->dev->name);
853 bond->params.miimon = 0;
854 }
855 if (!bond->params.arp_targets[0])
90194264 856 pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified\n",
06151dbc 857 bond->dev->name);
858 }
859 if (bond->dev->flags & IFF_UP) {
860 /* If the interface is up, we may need to fire off
861 * the ARP timer. If the interface is down, the
862 * timer will get fired off when the open function
863 * is called.
864 */
7bdb04ed 865 if (!newval->value) {
06151dbc 866 if (bond->params.arp_validate)
867 bond->recv_probe = NULL;
868 cancel_delayed_work_sync(&bond->arp_work);
869 } else {
870 /* arp_validate can be set only in active-backup mode */
3fe68df9 871 bond->recv_probe = bond_arp_rcv;
06151dbc 872 cancel_delayed_work_sync(&bond->mii_work);
873 queue_delayed_work(bond->wq, &bond->arp_work, 0);
874 }
875 }
876
877 return 0;
878}
7f28fa10 879
880static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
881 __be32 target,
882 unsigned long last_rx)
883{
884 __be32 *targets = bond->params.arp_targets;
885 struct list_head *iter;
886 struct slave *slave;
887
888 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
889 bond_for_each_slave(bond, slave, iter)
890 slave->target_last_arp_rx[slot] = last_rx;
891 targets[slot] = target;
892 }
893}
894
895static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
896{
897 __be32 *targets = bond->params.arp_targets;
898 int ind;
899
900 if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
901 pr_err("%s: invalid ARP target %pI4 specified for addition\n",
902 bond->dev->name, &target);
903 return -EINVAL;
904 }
905
906 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
907 pr_err("%s: ARP target %pI4 is already present\n",
908 bond->dev->name, &target);
909 return -EINVAL;
910 }
911
912 ind = bond_get_targets_ip(targets, 0); /* first free slot */
913 if (ind == -1) {
90194264 914 pr_err("%s: ARP target table is full!\n", bond->dev->name);
7f28fa10 915 return -EINVAL;
916 }
917
90194264 918 pr_info("%s: Adding ARP target %pI4\n", bond->dev->name, &target);
7f28fa10 919
920 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
921
922 return 0;
923}
924
f3253339 925static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
7f28fa10 926{
927 int ret;
928
929 /* not to race with bond_arp_rcv */
930 write_lock_bh(&bond->lock);
931 ret = _bond_option_arp_ip_target_add(bond, target);
932 write_unlock_bh(&bond->lock);
933
934 return ret;
935}
936
f3253339 937static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
7f28fa10 938{
939 __be32 *targets = bond->params.arp_targets;
940 struct list_head *iter;
941 struct slave *slave;
942 unsigned long *targets_rx;
943 int ind, i;
944
945 if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
946 pr_err("%s: invalid ARP target %pI4 specified for removal\n",
947 bond->dev->name, &target);
948 return -EINVAL;
949 }
950
951 ind = bond_get_targets_ip(targets, target);
952 if (ind == -1) {
90194264 953 pr_err("%s: unable to remove nonexistent ARP target %pI4\n",
7f28fa10 954 bond->dev->name, &target);
955 return -EINVAL;
956 }
957
958 if (ind == 0 && !targets[1] && bond->params.arp_interval)
90194264 959 pr_warn("%s: Removing last arp target with arp_interval on\n",
7f28fa10 960 bond->dev->name);
961
90194264 962 pr_info("%s: Removing ARP target %pI4\n", bond->dev->name, &target);
7f28fa10 963
964 /* not to race with bond_arp_rcv */
965 write_lock_bh(&bond->lock);
966
967 bond_for_each_slave(bond, slave, iter) {
968 targets_rx = slave->target_last_arp_rx;
969 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
970 targets_rx[i] = targets_rx[i+1];
971 targets_rx[i] = 0;
972 }
973 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
974 targets[i] = targets[i+1];
975 targets[i] = 0;
976
977 write_unlock_bh(&bond->lock);
978
979 return 0;
980}
981
4fb0ef58 982void bond_option_arp_ip_targets_clear(struct bonding *bond)
7f28fa10 983{
4fb0ef58 984 int i;
7f28fa10 985
986 /* not to race with bond_arp_rcv */
987 write_lock_bh(&bond->lock);
7f28fa10 988 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
989 _bond_options_arp_ip_target_set(bond, i, 0, 0);
4fb0ef58
NA		 990 write_unlock_bh(&bond->lock);
991}
7f28fa10 992
f3253339 993static int bond_option_arp_ip_targets_set(struct bonding *bond,
994 struct bond_opt_value *newval)
4fb0ef58
NA		 995{
996 int ret = -EPERM;
997 __be32 target;
998
999 if (newval->string) {
1000 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
1001 pr_err("%s: invalid ARP target %pI4 specified\n",
1002 bond->dev->name, &target);
1003 return ret;
1004 }
1005 if (newval->string[0] == '+')
1006 ret = bond_option_arp_ip_target_add(bond, target);
1007 else if (newval->string[0] == '-')
1008 ret = bond_option_arp_ip_target_rem(bond, target);
1009 else
90194264 1010 pr_err("no command found in arp_ip_targets file for bond %s - use +<addr> or -<addr>\n",
4fb0ef58
NA		 1011 bond->dev->name);
1012 } else {
1013 target = newval->value;
1014 ret = bond_option_arp_ip_target_add(bond, target);
7f28fa10 1015 }
1016
7f28fa10 1017 return ret;
1018}
29c49482 1019
f3253339 1020static int bond_option_arp_validate_set(struct bonding *bond,
1021 struct bond_opt_value *newval)
29c49482 1022{
90194264 1023 pr_info("%s: Setting arp_validate to %s (%llu)\n",
16228881 1024 bond->dev->name, newval->string, newval->value);
29c49482 1025
1026 if (bond->dev->flags & IFF_UP) {
16228881 1027 if (!newval->value)
29c49482 1028 bond->recv_probe = NULL;
1029 else if (bond->params.arp_interval)
1030 bond->recv_probe = bond_arp_rcv;
1031 }
16228881 1032 bond->params.arp_validate = newval->value;
29c49482 1033
1034 return 0;
1035}
d5c84254 1036
f3253339 1037static int bond_option_arp_all_targets_set(struct bonding *bond,
1038 struct bond_opt_value *newval)
d5c84254 1039{
90194264 1040 pr_info("%s: Setting arp_all_targets to %s (%llu)\n",
edf36b24
NA		 1041 bond->dev->name, newval->string, newval->value);
1042 bond->params.arp_all_targets = newval->value;
d5c84254 1043
1044 return 0;
1045}
0a98a0d1 1046
f3253339 1047static int bond_option_primary_set(struct bonding *bond,
1048 struct bond_opt_value *newval)
0a98a0d1 1049{
180222f0 1050 char *p, *primary = newval->string;
0a98a0d1 1051 struct list_head *iter;
1052 struct slave *slave;
0a98a0d1 1053
1054 block_netpoll_tx();
1055 read_lock(&bond->lock);
1056 write_lock_bh(&bond->curr_slave_lock);
1057
180222f0
NA		 1058 p = strchr(primary, '\n');
1059 if (p)
1060 *p = '\0';
0a98a0d1 1061 /* check to see if we are clearing primary */
1062 if (!strlen(primary)) {
90194264 1063 pr_info("%s: Setting primary slave to None\n", bond->dev->name);
0a98a0d1 1064 bond->primary_slave = NULL;
1065 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1066 bond_select_active_slave(bond);
1067 goto out;
1068 }
1069
1070 bond_for_each_slave(bond, slave, iter) {
1071 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
90194264 1072 pr_info("%s: Setting %s as primary slave\n",
0a98a0d1 1073 bond->dev->name, slave->dev->name);
1074 bond->primary_slave = slave;
1075 strcpy(bond->params.primary, slave->dev->name);
1076 bond_select_active_slave(bond);
1077 goto out;
1078 }
1079 }
1080
c59ab673 1081 if (bond->primary_slave) {
90194264 1082 pr_info("%s: Setting primary slave to None\n", bond->dev->name);
c59ab673 1083 bond->primary_slave = NULL;
1084 bond_select_active_slave(bond);
1085 }
0a98a0d1 1086 strncpy(bond->params.primary, primary, IFNAMSIZ);
1087 bond->params.primary[IFNAMSIZ - 1] = 0;
1088
90194264 1089 pr_info("%s: Recording %s as primary, but it has not been enslaved to %s yet\n",
0a98a0d1 1090 bond->dev->name, primary, bond->dev->name);
1091
1092out:
1093 write_unlock_bh(&bond->curr_slave_lock);
1094 read_unlock(&bond->lock);
1095 unblock_netpoll_tx();
1096
180222f0 1097 return 0;
0a98a0d1 1098}
8a41ae44 1099
f3253339 1100static int bond_option_primary_reselect_set(struct bonding *bond,
1101 struct bond_opt_value *newval)
8a41ae44 1102{
90194264 1103 pr_info("%s: Setting primary_reselect to %s (%llu)\n",
388d3a6d
NA		 1104 bond->dev->name, newval->string, newval->value);
1105 bond->params.primary_reselect = newval->value;
8a41ae44 1106
1107 block_netpoll_tx();
1108 write_lock_bh(&bond->curr_slave_lock);
1109 bond_select_active_slave(bond);
1110 write_unlock_bh(&bond->curr_slave_lock);
1111 unblock_netpoll_tx();
1112
1113 return 0;
1114}
89901972 1115
f3253339 1116static int bond_option_fail_over_mac_set(struct bonding *bond,
1117 struct bond_opt_value *newval)
89901972 1118{
90194264 1119 pr_info("%s: Setting fail_over_mac to %s (%llu)\n",
1df6b6aa
NA		 1120 bond->dev->name, newval->string, newval->value);
1121 bond->params.fail_over_mac = newval->value;
89901972 1122
1123 return 0;
1124}
f70161c6 1125
f3253339 1126static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1127 struct bond_opt_value *newval)
f70161c6 1128{
90194264 1129 pr_info("%s: Setting xmit hash policy to %s (%llu)\n",
a4b32ce7
NA		 1130 bond->dev->name, newval->string, newval->value);
1131 bond->params.xmit_policy = newval->value;
f70161c6 1132
1133 return 0;
1134}
d8838de7 1135
f3253339 1136static int bond_option_resend_igmp_set(struct bonding *bond,
1137 struct bond_opt_value *newval)
d8838de7 1138{
90194264 1139 pr_info("%s: Setting resend_igmp to %llu\n",
105c8fb6
NA		 1140 bond->dev->name, newval->value);
1141 bond->params.resend_igmp = newval->value;
d8838de7 1142
1143 return 0;
1144}
2c9839c1 1145
f3253339 1146static int bond_option_num_peer_notif_set(struct bonding *bond,
ef56becb 1147 struct bond_opt_value *newval)
2c9839c1 1148{
ef56becb
NA		 1149 bond->params.num_peer_notif = newval->value;
1150
2c9839c1 1151 return 0;
1152}
1cc0b1e3 1153
f3253339 1154static int bond_option_all_slaves_active_set(struct bonding *bond,
1155 struct bond_opt_value *newval)
1cc0b1e3 1156{
1157 struct list_head *iter;
1158 struct slave *slave;
1159
3df01162 1160 if (newval->value == bond->params.all_slaves_active)
1cc0b1e3 1161 return 0;
3df01162 1162 bond->params.all_slaves_active = newval->value;
1cc0b1e3 1163 bond_for_each_slave(bond, slave, iter) {
1164 if (!bond_is_active_slave(slave)) {
3df01162 1165 if (newval->value)
1cc0b1e3 1166 slave->inactive = 0;
1167 else
1168 slave->inactive = 1;
1169 }
1170 }
1171
1172 return 0;
1173}
7d101008 1174
f3253339 1175static int bond_option_min_links_set(struct bonding *bond,
1176 struct bond_opt_value *newval)
7d101008 1177{
633ddc9e
NA		 1178 pr_info("%s: Setting min links value to %llu\n",
1179 bond->dev->name, newval->value);
1180 bond->params.min_links = newval->value;
7d101008 1181
1182 return 0;
1183}
8d836d09 1184
f3253339 1185static int bond_option_lp_interval_set(struct bonding *bond,
1186 struct bond_opt_value *newval)
8d836d09 1187{
4325b374 1188 bond->params.lp_interval = newval->value;
8d836d09 1189
1190 return 0;
1191}
c13ab3ff 1192
f3253339 1193static int bond_option_pps_set(struct bonding *bond,
1194 struct bond_opt_value *newval)
c13ab3ff 1195{
aa59d851
NA		 1196 bond->params.packets_per_slave = newval->value;
1197 if (newval->value > 0) {
809fa972 1198 bond->params.reciprocal_packets_per_slave =
aa59d851 1199 reciprocal_value(newval->value);
809fa972
HFS		 1200 } else {
1201 /* reciprocal_packets_per_slave is unused if
1202 * packets_per_slave is 0 or 1, just initialize it
1203 */
1204 bond->params.reciprocal_packets_per_slave =
1205 (struct reciprocal_value) { 0 };
1206 }
c13ab3ff 1207
1208 return 0;
1209}
998e40bb 1210
f3253339 1211static int bond_option_lacp_rate_set(struct bonding *bond,
1212 struct bond_opt_value *newval)
998e40bb 1213{
90194264 1214 pr_info("%s: Setting LACP rate to %s (%llu)\n",
d3131de7
NA		 1215 bond->dev->name, newval->string, newval->value);
1216 bond->params.lacp_fast = newval->value;
3243c47b 1217 bond_3ad_update_lacp_rate(bond);
998e40bb 1218
1219 return 0;
1220}
ec029fac 1221
f3253339 1222static int bond_option_ad_select_set(struct bonding *bond,
1223 struct bond_opt_value *newval)
ec029fac 1224{
90194264 1225 pr_info("%s: Setting ad_select to %s (%llu)\n",
9e5f5eeb
NA		 1226 bond->dev->name, newval->string, newval->value);
1227 bond->params.ad_select = newval->value;
ec029fac 1228
1229 return 0;
1230}
24089ba1 1231
f3253339 1232static int bond_option_queue_id_set(struct bonding *bond,
1233 struct bond_opt_value *newval)
24089ba1
NA		 1234{
1235 struct slave *slave, *update_slave;
1236 struct net_device *sdev;
1237 struct list_head *iter;
1238 char *delim;
1239 int ret = 0;
1240 u16 qid;
1241
1242 /* delim will point to queue id if successful */
1243 delim = strchr(newval->string, ':');
1244 if (!delim)
1245 goto err_no_cmd;
1246
1247 /* Terminate string that points to device name and bump it
1248 * up one, so we can read the queue id there.
1249 */
1250 *delim = '\0';
1251 if (sscanf(++delim, "%hd\n", &qid) != 1)
1252 goto err_no_cmd;
1253
1254 /* Check buffer length, valid ifname and queue id */
c313c89e 1255 if (!dev_valid_name(newval->string) ||
24089ba1
NA		 1256 qid > bond->dev->real_num_tx_queues)
1257 goto err_no_cmd;
1258
1259 /* Get the pointer to that interface if it exists */
1260 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1261 if (!sdev)
1262 goto err_no_cmd;
1263
1264 /* Search for thes slave and check for duplicate qids */
1265 update_slave = NULL;
1266 bond_for_each_slave(bond, slave, iter) {
1267 if (sdev == slave->dev)
1268 /* We don't need to check the matching
1269 * slave for dups, since we're overwriting it
1270 */
1271 update_slave = slave;
1272 else if (qid && qid == slave->queue_id) {
1273 goto err_no_cmd;
1274 }
1275 }
1276
1277 if (!update_slave)
1278 goto err_no_cmd;
1279
1280 /* Actually set the qids for the slave */
1281 update_slave->queue_id = qid;
1282
1283out:
1284 return ret;
1285
1286err_no_cmd:
90194264 1287 pr_info("invalid input for queue_id set for %s\n", bond->dev->name);
24089ba1
NA		 1288 ret = -EPERM;
1289 goto out;
1290
1291}
0e2e5b66 1292
f3253339 1293static int bond_option_slaves_set(struct bonding *bond,
1294 struct bond_opt_value *newval)
0e2e5b66
NA		 1295{
1296 char command[IFNAMSIZ + 1] = { 0, };
1297 struct net_device *dev;
1298 char *ifname;
1299 int ret;
1300
1301 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1302 ifname = command + 1;
1303 if ((strlen(command) <= 1) ||
1304 !dev_valid_name(ifname))
1305 goto err_no_cmd;
1306
1307 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1308 if (!dev) {
90194264 1309 pr_info("%s: interface %s does not exist!\n",
0e2e5b66
NA		 1310 bond->dev->name, ifname);
1311 ret = -ENODEV;
1312 goto out;
1313 }
1314
1315 switch (command[0]) {
1316 case '+':
90194264 1317 pr_info("%s: Adding slave %s\n", bond->dev->name, dev->name);
0e2e5b66
NA		 1318 ret = bond_enslave(bond->dev, dev);
1319 break;
1320
1321 case '-':
90194264 1322 pr_info("%s: Removing slave %s\n", bond->dev->name, dev->name);
0e2e5b66
NA		 1323 ret = bond_release(bond->dev, dev);
1324 break;
1325
1326 default:
1327 goto err_no_cmd;
1328 }
1329
1330out:
1331 return ret;
1332
1333err_no_cmd:
90194264 1334 pr_err("no command found in slaves file for bond %s - use +ifname or -ifname\n",
0e2e5b66
NA		 1335 bond->dev->name);
1336 ret = -EPERM;
1337 goto out;
1338}
Linux kernel - Deliverables
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