Merge branch 'bnx2x-next'
[linux-block.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
72be35fe
JP
12#include <linux/errno.h>
13#include <linux/if.h>
d9e32b21 14#include <linux/netdevice.h>
eb2d4c64 15#include <linux/spinlock.h>
d9e32b21 16#include <linux/rcupdate.h>
09117362 17#include <linux/ctype.h>
4fb0ef58 18#include <linux/inet.h>
72be35fe
JP
19#include "bonding.h"
20
f3253339 21static int bond_option_active_slave_set(struct bonding *bond,
28f084cc 22 const struct bond_opt_value *newval);
f3253339 23static int bond_option_miimon_set(struct bonding *bond,
28f084cc 24 const struct bond_opt_value *newval);
f3253339 25static int bond_option_updelay_set(struct bonding *bond,
28f084cc 26 const struct bond_opt_value *newval);
f3253339 27static int bond_option_downdelay_set(struct bonding *bond,
28f084cc 28 const struct bond_opt_value *newval);
f3253339 29static int bond_option_use_carrier_set(struct bonding *bond,
28f084cc 30 const struct bond_opt_value *newval);
f3253339 31static int bond_option_arp_interval_set(struct bonding *bond,
28f084cc 32 const struct bond_opt_value *newval);
f3253339 33static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
34static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
35static int bond_option_arp_ip_targets_set(struct bonding *bond,
28f084cc 36 const struct bond_opt_value *newval);
f3253339 37static int bond_option_arp_validate_set(struct bonding *bond,
28f084cc 38 const struct bond_opt_value *newval);
f3253339 39static int bond_option_arp_all_targets_set(struct bonding *bond,
28f084cc 40 const struct bond_opt_value *newval);
f3253339 41static int bond_option_primary_set(struct bonding *bond,
28f084cc 42 const struct bond_opt_value *newval);
f3253339 43static int bond_option_primary_reselect_set(struct bonding *bond,
28f084cc 44 const struct bond_opt_value *newval);
f3253339 45static int bond_option_fail_over_mac_set(struct bonding *bond,
28f084cc 46 const struct bond_opt_value *newval);
f3253339 47static int bond_option_xmit_hash_policy_set(struct bonding *bond,
28f084cc 48 const struct bond_opt_value *newval);
f3253339 49static int bond_option_resend_igmp_set(struct bonding *bond,
28f084cc 50 const struct bond_opt_value *newval);
f3253339 51static int bond_option_num_peer_notif_set(struct bonding *bond,
28f084cc 52 const struct bond_opt_value *newval);
f3253339 53static int bond_option_all_slaves_active_set(struct bonding *bond,
28f084cc 54 const struct bond_opt_value *newval);
f3253339 55static int bond_option_min_links_set(struct bonding *bond,
28f084cc 56 const struct bond_opt_value *newval);
f3253339 57static int bond_option_lp_interval_set(struct bonding *bond,
28f084cc 58 const struct bond_opt_value *newval);
f3253339 59static int bond_option_pps_set(struct bonding *bond,
28f084cc 60 const struct bond_opt_value *newval);
f3253339 61static int bond_option_lacp_rate_set(struct bonding *bond,
28f084cc 62 const struct bond_opt_value *newval);
f3253339 63static int bond_option_ad_select_set(struct bonding *bond,
28f084cc 64 const struct bond_opt_value *newval);
f3253339 65static int bond_option_queue_id_set(struct bonding *bond,
28f084cc 66 const struct bond_opt_value *newval);
f3253339 67static int bond_option_mode_set(struct bonding *bond,
28f084cc 68 const struct bond_opt_value *newval);
f3253339 69static int bond_option_slaves_set(struct bonding *bond,
28f084cc 70 const struct bond_opt_value *newval);
e9f0fb88
MB
71static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
72 const struct bond_opt_value *newval);
f3253339 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},
81c70806 128 { NULL, -1, 0}
7bdb04ed
NA
129};
130
f3253339 131static const struct bond_opt_value bond_lacp_rate_tbl[] = {
d3131de7
NA
132 { "slow", AD_LACP_SLOW, 0},
133 { "fast", AD_LACP_FAST, 0},
134 { NULL, -1, 0},
135};
136
f3253339 137static const struct bond_opt_value bond_ad_select_tbl[] = {
9e5f5eeb
NA
138 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
139 { "bandwidth", BOND_AD_BANDWIDTH, 0},
140 { "count", BOND_AD_COUNT, 0},
141 { NULL, -1, 0},
142};
143
f3253339 144static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
ef56becb
NA
145 { "off", 0, 0},
146 { "maxval", 255, BOND_VALFLAG_MAX},
147 { "default", 1, BOND_VALFLAG_DEFAULT},
148 { NULL, -1, 0}
149};
150
f3253339 151static const struct bond_opt_value bond_primary_reselect_tbl[] = {
388d3a6d
NA
152 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
153 { "better", BOND_PRI_RESELECT_BETTER, 0},
154 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
155 { NULL, -1},
156};
157
f3253339 158static const struct bond_opt_value bond_use_carrier_tbl[] = {
0fff0608
NA
159 { "off", 0, 0},
160 { "on", 1, BOND_VALFLAG_DEFAULT},
161 { NULL, -1, 0}
162};
163
f3253339 164static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
3df01162
NA
165 { "off", 0, BOND_VALFLAG_DEFAULT},
166 { "on", 1, 0},
167 { NULL, -1, 0}
168};
169
f3253339 170static const struct bond_opt_value bond_resend_igmp_tbl[] = {
105c8fb6
NA
171 { "off", 0, 0},
172 { "maxval", 255, BOND_VALFLAG_MAX},
173 { "default", 1, BOND_VALFLAG_DEFAULT},
174 { NULL, -1, 0}
175};
176
f3253339 177static const struct bond_opt_value bond_lp_interval_tbl[] = {
4325b374
NA
178 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
179 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
5bd4e4c1 180 { NULL, -1, 0},
4325b374
NA
181};
182
e9f0fb88
MB
183static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
184 { "off", 0, 0},
185 { "on", 1, BOND_VALFLAG_DEFAULT},
186 { NULL, -1, 0}
187};
188
f3253339 189static const struct bond_option bond_opts[] = {
2b3798d5
NA
190 [BOND_OPT_MODE] = {
191 .id = BOND_OPT_MODE,
192 .name = "mode",
193 .desc = "bond device mode",
194 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
195 .values = bond_mode_tbl,
196 .set = bond_option_mode_set
197 },
aa59d851
NA
198 [BOND_OPT_PACKETS_PER_SLAVE] = {
199 .id = BOND_OPT_PACKETS_PER_SLAVE,
200 .name = "packets_per_slave",
201 .desc = "Packets to send per slave in RR mode",
202 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
203 .values = bond_pps_tbl,
204 .set = bond_option_pps_set
205 },
a4b32ce7
NA
206 [BOND_OPT_XMIT_HASH] = {
207 .id = BOND_OPT_XMIT_HASH,
208 .name = "xmit_hash_policy",
f05b42ea 209 .desc = "balance-xor, 802.3ad, and tlb hashing method",
a4b32ce7
NA
210 .values = bond_xmit_hashtype_tbl,
211 .set = bond_option_xmit_hash_policy_set
212 },
16228881
NA
213 [BOND_OPT_ARP_VALIDATE] = {
214 .id = BOND_OPT_ARP_VALIDATE,
215 .name = "arp_validate",
216 .desc = "validate src/dst of ARP probes",
13ac34a8
VF
217 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
218 BIT(BOND_MODE_ALB),
16228881
NA
219 .values = bond_arp_validate_tbl,
220 .set = bond_option_arp_validate_set
221 },
edf36b24
NA
222 [BOND_OPT_ARP_ALL_TARGETS] = {
223 .id = BOND_OPT_ARP_ALL_TARGETS,
224 .name = "arp_all_targets",
225 .desc = "fail on any/all arp targets timeout",
226 .values = bond_arp_all_targets_tbl,
227 .set = bond_option_arp_all_targets_set
228 },
1df6b6aa
NA
229 [BOND_OPT_FAIL_OVER_MAC] = {
230 .id = BOND_OPT_FAIL_OVER_MAC,
231 .name = "fail_over_mac",
232 .desc = "For active-backup, do not set all slaves to the same MAC",
233 .flags = BOND_OPTFLAG_NOSLAVES,
234 .values = bond_fail_over_mac_tbl,
235 .set = bond_option_fail_over_mac_set
236 },
7bdb04ed
NA
237 [BOND_OPT_ARP_INTERVAL] = {
238 .id = BOND_OPT_ARP_INTERVAL,
239 .name = "arp_interval",
240 .desc = "arp interval in milliseconds",
241 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
242 BIT(BOND_MODE_ALB),
243 .values = bond_intmax_tbl,
244 .set = bond_option_arp_interval_set
245 },
4fb0ef58
NA
246 [BOND_OPT_ARP_TARGETS] = {
247 .id = BOND_OPT_ARP_TARGETS,
248 .name = "arp_ip_target",
249 .desc = "arp targets in n.n.n.n form",
250 .flags = BOND_OPTFLAG_RAWVAL,
251 .set = bond_option_arp_ip_targets_set
252 },
25a9b54a
NA
253 [BOND_OPT_DOWNDELAY] = {
254 .id = BOND_OPT_DOWNDELAY,
255 .name = "downdelay",
256 .desc = "Delay before considering link down, in milliseconds",
257 .values = bond_intmax_tbl,
258 .set = bond_option_downdelay_set
259 },
e4994612
NA
260 [BOND_OPT_UPDELAY] = {
261 .id = BOND_OPT_UPDELAY,
262 .name = "updelay",
263 .desc = "Delay before considering link up, in milliseconds",
264 .values = bond_intmax_tbl,
265 .set = bond_option_updelay_set
266 },
d3131de7
NA
267 [BOND_OPT_LACP_RATE] = {
268 .id = BOND_OPT_LACP_RATE,
269 .name = "lacp_rate",
270 .desc = "LACPDU tx rate to request from 802.3ad partner",
271 .flags = BOND_OPTFLAG_IFDOWN,
272 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
273 .values = bond_lacp_rate_tbl,
274 .set = bond_option_lacp_rate_set
275 },
633ddc9e
NA
276 [BOND_OPT_MINLINKS] = {
277 .id = BOND_OPT_MINLINKS,
278 .name = "min_links",
279 .desc = "Minimum number of available links before turning on carrier",
280 .values = bond_intmax_tbl,
281 .set = bond_option_min_links_set
282 },
9e5f5eeb
NA
283 [BOND_OPT_AD_SELECT] = {
284 .id = BOND_OPT_AD_SELECT,
285 .name = "ad_select",
286 .desc = "803.ad aggregation selection logic",
287 .flags = BOND_OPTFLAG_IFDOWN,
288 .values = bond_ad_select_tbl,
289 .set = bond_option_ad_select_set
290 },
ef56becb
NA
291 [BOND_OPT_NUM_PEER_NOTIF] = {
292 .id = BOND_OPT_NUM_PEER_NOTIF,
293 .name = "num_unsol_na",
294 .desc = "Number of peer notifications to send on failover event",
295 .values = bond_num_peer_notif_tbl,
296 .set = bond_option_num_peer_notif_set
297 },
b98d9c66
NA
298 [BOND_OPT_MIIMON] = {
299 .id = BOND_OPT_MIIMON,
300 .name = "miimon",
301 .desc = "Link check interval in milliseconds",
302 .values = bond_intmax_tbl,
303 .set = bond_option_miimon_set
304 },
180222f0
NA
305 [BOND_OPT_PRIMARY] = {
306 .id = BOND_OPT_PRIMARY,
307 .name = "primary",
308 .desc = "Primary network device to use",
309 .flags = BOND_OPTFLAG_RAWVAL,
310 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
311 BIT(BOND_MODE_TLB) |
312 BIT(BOND_MODE_ALB)),
313 .set = bond_option_primary_set
314 },
388d3a6d
NA
315 [BOND_OPT_PRIMARY_RESELECT] = {
316 .id = BOND_OPT_PRIMARY_RESELECT,
317 .name = "primary_reselect",
318 .desc = "Reselect primary slave once it comes up",
319 .values = bond_primary_reselect_tbl,
320 .set = bond_option_primary_reselect_set
321 },
0fff0608
NA
322 [BOND_OPT_USE_CARRIER] = {
323 .id = BOND_OPT_USE_CARRIER,
324 .name = "use_carrier",
325 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
326 .values = bond_use_carrier_tbl,
327 .set = bond_option_use_carrier_set
328 },
d1fbd3ed
NA
329 [BOND_OPT_ACTIVE_SLAVE] = {
330 .id = BOND_OPT_ACTIVE_SLAVE,
331 .name = "active_slave",
332 .desc = "Currently active slave",
333 .flags = BOND_OPTFLAG_RAWVAL,
334 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
335 BIT(BOND_MODE_TLB) |
336 BIT(BOND_MODE_ALB)),
337 .set = bond_option_active_slave_set
338 },
24089ba1
NA
339 [BOND_OPT_QUEUE_ID] = {
340 .id = BOND_OPT_QUEUE_ID,
341 .name = "queue_id",
342 .desc = "Set queue id of a slave",
343 .flags = BOND_OPTFLAG_RAWVAL,
344 .set = bond_option_queue_id_set
345 },
3df01162
NA
346 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
347 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
348 .name = "all_slaves_active",
349 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
350 .values = bond_all_slaves_active_tbl,
351 .set = bond_option_all_slaves_active_set
352 },
105c8fb6
NA
353 [BOND_OPT_RESEND_IGMP] = {
354 .id = BOND_OPT_RESEND_IGMP,
355 .name = "resend_igmp",
356 .desc = "Number of IGMP membership reports to send on link failure",
357 .values = bond_resend_igmp_tbl,
358 .set = bond_option_resend_igmp_set
359 },
4325b374
NA
360 [BOND_OPT_LP_INTERVAL] = {
361 .id = BOND_OPT_LP_INTERVAL,
362 .name = "lp_interval",
363 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
364 .values = bond_lp_interval_tbl,
365 .set = bond_option_lp_interval_set
366 },
0e2e5b66
NA
367 [BOND_OPT_SLAVES] = {
368 .id = BOND_OPT_SLAVES,
369 .name = "slaves",
370 .desc = "Slave membership management",
371 .flags = BOND_OPTFLAG_RAWVAL,
372 .set = bond_option_slaves_set
373 },
e9f0fb88
MB
374 [BOND_OPT_TLB_DYNAMIC_LB] = {
375 .id = BOND_OPT_TLB_DYNAMIC_LB,
dc3e5d18 376 .name = "tlb_dynamic_lb",
e9f0fb88
MB
377 .desc = "Enable dynamic flow shuffling",
378 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB)),
379 .values = bond_tlb_dynamic_lb_tbl,
380 .flags = BOND_OPTFLAG_IFDOWN,
381 .set = bond_option_tlb_dynamic_lb_set,
382 },
09117362
NA
383 { }
384};
385
dc3e5d18
NA
386/* Searches for an option by name */
387const struct bond_option *bond_opt_get_by_name(const char *name)
388{
389 const struct bond_option *opt;
390 int option;
391
392 for (option = 0; option < BOND_OPT_LAST; option++) {
393 opt = bond_opt_get(option);
394 if (opt && !strcmp(opt->name, name))
395 return opt;
396 }
397
398 return NULL;
399}
400
09117362 401/* Searches for a value in opt's values[] table */
f3253339 402const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
09117362 403{
f3253339 404 const struct bond_option *opt;
09117362
NA
405 int i;
406
407 opt = bond_opt_get(option);
408 if (WARN_ON(!opt))
409 return NULL;
410 for (i = 0; opt->values && opt->values[i].string; i++)
411 if (opt->values[i].value == val)
412 return &opt->values[i];
413
414 return NULL;
415}
416
417/* Searches for a value in opt's values[] table which matches the flagmask */
f3253339 418static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
09117362
NA
419 u32 flagmask)
420{
421 int i;
422
423 for (i = 0; opt->values && opt->values[i].string; i++)
424 if (opt->values[i].flags & flagmask)
425 return &opt->values[i];
426
427 return NULL;
428}
429
430/* If maxval is missing then there's no range to check. In case minval is
431 * missing then it's considered to be 0.
432 */
433static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
434{
f3253339 435 const struct bond_opt_value *minval, *maxval;
09117362
NA
436
437 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
438 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
439 if (!maxval || (minval && val < minval->value) || val > maxval->value)
440 return false;
441
442 return true;
443}
444
445/**
446 * bond_opt_parse - parse option value
447 * @opt: the option to parse against
448 * @val: value to parse
449 *
450 * This function tries to extract the value from @val and check if it's
451 * a possible match for the option and returns NULL if a match isn't found,
452 * or the struct_opt_value that matched. It also strips the new line from
453 * @val->string if it's present.
454 */
f3253339 455const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
456 struct bond_opt_value *val)
09117362
NA
457{
458 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
f3253339 459 const struct bond_opt_value *tbl;
460 const struct bond_opt_value *ret = NULL;
09117362
NA
461 bool checkval;
462 int i, rv;
463
464 /* No parsing if the option wants a raw val */
465 if (opt->flags & BOND_OPTFLAG_RAWVAL)
466 return val;
467
468 tbl = opt->values;
469 if (!tbl)
470 goto out;
471
472 /* ULLONG_MAX is used to bypass string processing */
473 checkval = val->value != ULLONG_MAX;
474 if (!checkval) {
475 if (!val->string)
476 goto out;
477 p = strchr(val->string, '\n');
478 if (p)
479 *p = '\0';
480 for (p = val->string; *p; p++)
481 if (!(isdigit(*p) || isspace(*p)))
482 break;
483 /* The following code extracts the string to match or the value
484 * and sets checkval appropriately
485 */
486 if (*p) {
487 rv = sscanf(val->string, "%32s", valstr);
488 } else {
489 rv = sscanf(val->string, "%llu", &val->value);
490 checkval = true;
491 }
492 if (!rv)
493 goto out;
494 }
495
496 for (i = 0; tbl[i].string; i++) {
497 /* Check for exact match */
498 if (checkval) {
499 if (val->value == tbl[i].value)
500 ret = &tbl[i];
501 } else {
502 if (!strcmp(valstr, "default") &&
503 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
504 ret = &tbl[i];
505
506 if (!strcmp(valstr, tbl[i].string))
507 ret = &tbl[i];
508 }
509 /* Found an exact match */
510 if (ret)
511 goto out;
512 }
513 /* Possible range match */
514 if (checkval && bond_opt_check_range(opt, val->value))
515 ret = val;
516out:
517 return ret;
518}
519
520/* Check opt's dependencies against bond mode and currently set options */
521static int bond_opt_check_deps(struct bonding *bond,
522 const struct bond_option *opt)
523{
524 struct bond_params *params = &bond->params;
525
526 if (test_bit(params->mode, &opt->unsuppmodes))
527 return -EACCES;
528 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
529 return -ENOTEMPTY;
530 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
531 return -EBUSY;
532
533 return 0;
534}
535
536static void bond_opt_dep_print(struct bonding *bond,
537 const struct bond_option *opt)
538{
28f084cc 539 const struct bond_opt_value *modeval;
09117362
NA
540 struct bond_params *params;
541
542 params = &bond->params;
2b3798d5 543 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
09117362 544 if (test_bit(params->mode, &opt->unsuppmodes))
2de390ba
VF
545 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
546 opt->name, modeval->string, modeval->value);
09117362
NA
547}
548
549static void bond_opt_error_interpret(struct bonding *bond,
550 const struct bond_option *opt,
28f084cc 551 int error, const struct bond_opt_value *val)
09117362 552{
28f084cc 553 const struct bond_opt_value *minval, *maxval;
09117362
NA
554 char *p;
555
556 switch (error) {
557 case -EINVAL:
558 if (val) {
559 if (val->string) {
560 /* sometimes RAWVAL opts may have new lines */
561 p = strchr(val->string, '\n');
562 if (p)
563 *p = '\0';
2de390ba
VF
564 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
565 opt->name, val->string);
09117362 566 } else {
2de390ba
VF
567 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
568 opt->name, val->value);
09117362
NA
569 }
570 }
571 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
572 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
573 if (!maxval)
574 break;
2de390ba
VF
575 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
576 opt->name, minval ? minval->value : 0, maxval->value);
09117362
NA
577 break;
578 case -EACCES:
579 bond_opt_dep_print(bond, opt);
580 break;
581 case -ENOTEMPTY:
2de390ba
VF
582 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
583 opt->name);
09117362
NA
584 break;
585 case -EBUSY:
2de390ba
VF
586 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
587 opt->name);
09117362
NA
588 break;
589 default:
590 break;
591 }
592}
593
594/**
595 * __bond_opt_set - set a bonding option
596 * @bond: target bond device
597 * @option: option to set
598 * @val: value to set it to
599 *
600 * This function is used to change the bond's option value, it can be
601 * used for both enabling/changing an option and for disabling it. RTNL lock
602 * must be obtained before calling this function.
603 */
604int __bond_opt_set(struct bonding *bond,
605 unsigned int option, struct bond_opt_value *val)
606{
28f084cc 607 const struct bond_opt_value *retval = NULL;
09117362
NA
608 const struct bond_option *opt;
609 int ret = -ENOENT;
610
611 ASSERT_RTNL();
612
613 opt = bond_opt_get(option);
614 if (WARN_ON(!val) || WARN_ON(!opt))
615 goto out;
616 ret = bond_opt_check_deps(bond, opt);
617 if (ret)
618 goto out;
619 retval = bond_opt_parse(opt, val);
620 if (!retval) {
621 ret = -EINVAL;
622 goto out;
623 }
624 ret = opt->set(bond, retval);
625out:
626 if (ret)
627 bond_opt_error_interpret(bond, opt, ret, val);
628
629 return ret;
630}
631
632/**
633 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
634 * @bond: target bond device
635 * @option: option to set
636 * @buf: value to set it to
637 *
638 * This function tries to acquire RTNL without blocking and if successful
639 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
640 */
641int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
642{
643 struct bond_opt_value optval;
644 int ret;
645
646 if (!rtnl_trylock())
647 return restart_syscall();
648 bond_opt_initstr(&optval, buf);
649 ret = __bond_opt_set(bond, option, &optval);
650 rtnl_unlock();
651
652 return ret;
653}
654
655/**
656 * bond_opt_get - get a pointer to an option
657 * @option: option for which to return a pointer
658 *
659 * This function checks if option is valid and if so returns a pointer
660 * to its entry in the bond_opts[] option array.
661 */
f3253339 662const struct bond_option *bond_opt_get(unsigned int option)
09117362
NA
663{
664 if (!BOND_OPT_VALID(option))
665 return NULL;
666
667 return &bond_opts[option];
668}
669
ff11d8b2
NA
670static int bond_option_mode_set(struct bonding *bond,
671 const struct bond_opt_value *newval)
72be35fe 672{
267bed77 673 if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) {
2de390ba
VF
674 netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
675 newval->string);
fe9d04af 676 /* disable arp monitoring */
677 bond->params.arp_interval = 0;
678 /* set miimon to default value */
679 bond->params.miimon = BOND_DEFAULT_MIIMON;
2de390ba
VF
680 netdev_info(bond->dev, "Setting MII monitoring interval to %d\n",
681 bond->params.miimon);
72be35fe
JP
682 }
683
684 /* don't cache arp_validate between modes */
685 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
2b3798d5
NA
686 bond->params.mode = newval->value;
687
72be35fe
JP
688 return 0;
689}
d9e32b21 690
752d48b5
JP
691static struct net_device *__bond_option_active_slave_get(struct bonding *bond,
692 struct slave *slave)
693{
ec0865a9 694 return bond_uses_primary(bond) && slave ? slave->dev : NULL;
752d48b5
JP
695}
696
697struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
698{
699 struct slave *slave = rcu_dereference(bond->curr_active_slave);
700
701 return __bond_option_active_slave_get(bond, slave);
702}
703
f3253339 704static int bond_option_active_slave_set(struct bonding *bond,
28f084cc 705 const struct bond_opt_value *newval)
d9e32b21 706{
d1fbd3ed
NA
707 char ifname[IFNAMSIZ] = { 0, };
708 struct net_device *slave_dev;
d9e32b21
JP
709 int ret = 0;
710
d1fbd3ed
NA
711 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
712 if (!strlen(ifname) || newval->string[0] == '\n') {
713 slave_dev = NULL;
714 } else {
715 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
716 if (!slave_dev)
717 return -ENODEV;
718 }
719
d9e32b21
JP
720 if (slave_dev) {
721 if (!netif_is_bond_slave(slave_dev)) {
2de390ba
VF
722 netdev_err(bond->dev, "Device %s is not bonding slave\n",
723 slave_dev->name);
d9e32b21
JP
724 return -EINVAL;
725 }
726
727 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
2de390ba
VF
728 netdev_err(bond->dev, "Device %s is not our slave\n",
729 slave_dev->name);
d9e32b21
JP
730 return -EINVAL;
731 }
732 }
733
d9e32b21 734 block_netpoll_tx();
d9e32b21
JP
735 write_lock_bh(&bond->curr_slave_lock);
736
737 /* check to see if we are clearing active */
738 if (!slave_dev) {
2de390ba 739 netdev_info(bond->dev, "Clearing current active slave\n");
8800a244 740 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
d9e32b21
JP
741 bond_select_active_slave(bond);
742 } else {
4740d638 743 struct slave *old_active = bond_deref_active_protected(bond);
d9e32b21
JP
744 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
745
746 BUG_ON(!new_active);
747
748 if (new_active == old_active) {
749 /* do nothing */
2de390ba
VF
750 netdev_info(bond->dev, "%s is already the current active slave\n",
751 new_active->dev->name);
d9e32b21
JP
752 } else {
753 if (old_active && (new_active->link == BOND_LINK_UP) &&
b6adc610 754 bond_slave_is_up(new_active)) {
2de390ba
VF
755 netdev_info(bond->dev, "Setting %s as active slave\n",
756 new_active->dev->name);
d9e32b21
JP
757 bond_change_active_slave(bond, new_active);
758 } else {
2de390ba
VF
759 netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n",
760 new_active->dev->name,
761 new_active->dev->name);
d9e32b21
JP
762 ret = -EINVAL;
763 }
764 }
765 }
766
767 write_unlock_bh(&bond->curr_slave_lock);
d9e32b21 768 unblock_netpoll_tx();
d1fbd3ed 769
d9e32b21
JP
770 return ret;
771}
eecdaa6e 772
dc3e5d18
NA
773/* There are two tricky bits here. First, if MII monitoring is activated, then
774 * we must disable ARP monitoring. Second, if the timer isn't running, we must
775 * start it.
776 */
f3253339 777static int bond_option_miimon_set(struct bonding *bond,
28f084cc 778 const struct bond_opt_value *newval)
eecdaa6e 779{
2de390ba
VF
780 netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n",
781 newval->value);
b98d9c66 782 bond->params.miimon = newval->value;
eecdaa6e 783 if (bond->params.updelay)
2de390ba 784 netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
eecdaa6e 785 bond->params.updelay * bond->params.miimon);
786 if (bond->params.downdelay)
2de390ba
VF
787 netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
788 bond->params.downdelay * bond->params.miimon);
b98d9c66 789 if (newval->value && bond->params.arp_interval) {
2de390ba 790 netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
eecdaa6e 791 bond->params.arp_interval = 0;
792 if (bond->params.arp_validate)
793 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
794 }
795 if (bond->dev->flags & IFF_UP) {
796 /* If the interface is up, we may need to fire off
797 * the MII timer. If the interface is down, the
798 * timer will get fired off when the open function
799 * is called.
800 */
b98d9c66 801 if (!newval->value) {
eecdaa6e 802 cancel_delayed_work_sync(&bond->mii_work);
803 } else {
804 cancel_delayed_work_sync(&bond->arp_work);
805 queue_delayed_work(bond->wq, &bond->mii_work, 0);
806 }
807 }
b98d9c66 808
eecdaa6e 809 return 0;
810}
25852e29 811
dc3e5d18
NA
812/* Set up and down delays. These must be multiples of the
813 * MII monitoring value, and are stored internally as the multiplier.
814 * Thus, we must translate to MS for the real world.
815 */
f3253339 816static int bond_option_updelay_set(struct bonding *bond,
28f084cc 817 const struct bond_opt_value *newval)
25852e29 818{
0681a282
NA
819 int value = newval->value;
820
e4994612 821 if (!bond->params.miimon) {
2de390ba 822 netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n");
25852e29 823 return -EPERM;
824 }
0681a282 825 if ((value % bond->params.miimon) != 0) {
2de390ba
VF
826 netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
827 value, bond->params.miimon,
828 (value / bond->params.miimon) *
829 bond->params.miimon);
25852e29 830 }
0681a282 831 bond->params.updelay = value / bond->params.miimon;
2de390ba
VF
832 netdev_info(bond->dev, "Setting up delay to %d\n",
833 bond->params.updelay * bond->params.miimon);
25852e29 834
835 return 0;
836}
c7461f9b 837
f3253339 838static int bond_option_downdelay_set(struct bonding *bond,
28f084cc 839 const struct bond_opt_value *newval)
c7461f9b 840{
0681a282
NA
841 int value = newval->value;
842
25a9b54a 843 if (!bond->params.miimon) {
2de390ba 844 netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n");
c7461f9b 845 return -EPERM;
846 }
0681a282 847 if ((value % bond->params.miimon) != 0) {
2de390ba
VF
848 netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
849 value, bond->params.miimon,
850 (value / bond->params.miimon) *
851 bond->params.miimon);
c7461f9b 852 }
0681a282 853 bond->params.downdelay = value / bond->params.miimon;
2de390ba
VF
854 netdev_info(bond->dev, "Setting down delay to %d\n",
855 bond->params.downdelay * bond->params.miimon);
c7461f9b 856
857 return 0;
858}
9f53e14e 859
f3253339 860static int bond_option_use_carrier_set(struct bonding *bond,
28f084cc 861 const struct bond_opt_value *newval)
9f53e14e 862{
2de390ba
VF
863 netdev_info(bond->dev, "Setting use_carrier to %llu\n",
864 newval->value);
0fff0608 865 bond->params.use_carrier = newval->value;
9f53e14e 866
867 return 0;
868}
06151dbc 869
dc3e5d18
NA
870/* There are two tricky bits here. First, if ARP monitoring is activated, then
871 * we must disable MII monitoring. Second, if the ARP timer isn't running,
872 * we must start it.
873 */
f3253339 874static int bond_option_arp_interval_set(struct bonding *bond,
28f084cc 875 const struct bond_opt_value *newval)
06151dbc 876{
2de390ba
VF
877 netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n",
878 newval->value);
7bdb04ed
NA
879 bond->params.arp_interval = newval->value;
880 if (newval->value) {
06151dbc 881 if (bond->params.miimon) {
2de390ba 882 netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
06151dbc 883 bond->params.miimon = 0;
884 }
885 if (!bond->params.arp_targets[0])
2de390ba 886 netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
06151dbc 887 }
888 if (bond->dev->flags & IFF_UP) {
889 /* If the interface is up, we may need to fire off
890 * the ARP timer. If the interface is down, the
891 * timer will get fired off when the open function
892 * is called.
893 */
7bdb04ed 894 if (!newval->value) {
06151dbc 895 if (bond->params.arp_validate)
896 bond->recv_probe = NULL;
897 cancel_delayed_work_sync(&bond->arp_work);
898 } else {
899 /* arp_validate can be set only in active-backup mode */
3fe68df9 900 bond->recv_probe = bond_arp_rcv;
06151dbc 901 cancel_delayed_work_sync(&bond->mii_work);
902 queue_delayed_work(bond->wq, &bond->arp_work, 0);
903 }
904 }
905
906 return 0;
907}
7f28fa10 908
909static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
910 __be32 target,
911 unsigned long last_rx)
912{
913 __be32 *targets = bond->params.arp_targets;
914 struct list_head *iter;
915 struct slave *slave;
916
917 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
918 bond_for_each_slave(bond, slave, iter)
919 slave->target_last_arp_rx[slot] = last_rx;
920 targets[slot] = target;
921 }
922}
923
924static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
925{
926 __be32 *targets = bond->params.arp_targets;
927 int ind;
928
2807a9fe 929 if (!bond_is_ip_target_ok(target)) {
2de390ba
VF
930 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
931 &target);
7f28fa10 932 return -EINVAL;
933 }
934
935 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
2de390ba
VF
936 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
937 &target);
7f28fa10 938 return -EINVAL;
939 }
940
941 ind = bond_get_targets_ip(targets, 0); /* first free slot */
942 if (ind == -1) {
2de390ba 943 netdev_err(bond->dev, "ARP target table is full!\n");
7f28fa10 944 return -EINVAL;
945 }
946
2de390ba 947 netdev_info(bond->dev, "Adding ARP target %pI4\n", &target);
7f28fa10 948
949 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
950
951 return 0;
952}
953
f3253339 954static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
7f28fa10 955{
956 int ret;
957
958 /* not to race with bond_arp_rcv */
959 write_lock_bh(&bond->lock);
960 ret = _bond_option_arp_ip_target_add(bond, target);
961 write_unlock_bh(&bond->lock);
962
963 return ret;
964}
965
f3253339 966static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
7f28fa10 967{
968 __be32 *targets = bond->params.arp_targets;
969 struct list_head *iter;
970 struct slave *slave;
971 unsigned long *targets_rx;
972 int ind, i;
973
2807a9fe 974 if (!bond_is_ip_target_ok(target)) {
2de390ba
VF
975 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
976 &target);
7f28fa10 977 return -EINVAL;
978 }
979
980 ind = bond_get_targets_ip(targets, target);
981 if (ind == -1) {
2de390ba
VF
982 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
983 &target);
7f28fa10 984 return -EINVAL;
985 }
986
987 if (ind == 0 && !targets[1] && bond->params.arp_interval)
2de390ba 988 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
7f28fa10 989
2de390ba 990 netdev_info(bond->dev, "Removing ARP target %pI4\n", &target);
7f28fa10 991
992 /* not to race with bond_arp_rcv */
993 write_lock_bh(&bond->lock);
994
995 bond_for_each_slave(bond, slave, iter) {
996 targets_rx = slave->target_last_arp_rx;
997 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
998 targets_rx[i] = targets_rx[i+1];
999 targets_rx[i] = 0;
1000 }
1001 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1002 targets[i] = targets[i+1];
1003 targets[i] = 0;
1004
1005 write_unlock_bh(&bond->lock);
1006
1007 return 0;
1008}
1009
4fb0ef58 1010void bond_option_arp_ip_targets_clear(struct bonding *bond)
7f28fa10 1011{
4fb0ef58 1012 int i;
7f28fa10 1013
1014 /* not to race with bond_arp_rcv */
1015 write_lock_bh(&bond->lock);
7f28fa10 1016 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1017 _bond_options_arp_ip_target_set(bond, i, 0, 0);
4fb0ef58
NA
1018 write_unlock_bh(&bond->lock);
1019}
7f28fa10 1020
f3253339 1021static int bond_option_arp_ip_targets_set(struct bonding *bond,
28f084cc 1022 const struct bond_opt_value *newval)
4fb0ef58
NA
1023{
1024 int ret = -EPERM;
1025 __be32 target;
1026
1027 if (newval->string) {
1028 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
2de390ba
VF
1029 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1030 &target);
4fb0ef58
NA
1031 return ret;
1032 }
1033 if (newval->string[0] == '+')
1034 ret = bond_option_arp_ip_target_add(bond, target);
1035 else if (newval->string[0] == '-')
1036 ret = bond_option_arp_ip_target_rem(bond, target);
1037 else
2de390ba 1038 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
4fb0ef58
NA
1039 } else {
1040 target = newval->value;
1041 ret = bond_option_arp_ip_target_add(bond, target);
7f28fa10 1042 }
1043
7f28fa10 1044 return ret;
1045}
29c49482 1046
f3253339 1047static int bond_option_arp_validate_set(struct bonding *bond,
28f084cc 1048 const struct bond_opt_value *newval)
29c49482 1049{
2de390ba
VF
1050 netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n",
1051 newval->string, newval->value);
29c49482 1052
1053 if (bond->dev->flags & IFF_UP) {
16228881 1054 if (!newval->value)
29c49482 1055 bond->recv_probe = NULL;
1056 else if (bond->params.arp_interval)
1057 bond->recv_probe = bond_arp_rcv;
1058 }
16228881 1059 bond->params.arp_validate = newval->value;
29c49482 1060
1061 return 0;
1062}
d5c84254 1063
f3253339 1064static int bond_option_arp_all_targets_set(struct bonding *bond,
28f084cc 1065 const struct bond_opt_value *newval)
d5c84254 1066{
2de390ba
VF
1067 netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1068 newval->string, newval->value);
edf36b24 1069 bond->params.arp_all_targets = newval->value;
d5c84254 1070
1071 return 0;
1072}
0a98a0d1 1073
f3253339 1074static int bond_option_primary_set(struct bonding *bond,
28f084cc 1075 const struct bond_opt_value *newval)
0a98a0d1 1076{
180222f0 1077 char *p, *primary = newval->string;
0a98a0d1 1078 struct list_head *iter;
1079 struct slave *slave;
0a98a0d1 1080
1081 block_netpoll_tx();
1082 read_lock(&bond->lock);
1083 write_lock_bh(&bond->curr_slave_lock);
1084
180222f0
NA
1085 p = strchr(primary, '\n');
1086 if (p)
1087 *p = '\0';
0a98a0d1 1088 /* check to see if we are clearing primary */
1089 if (!strlen(primary)) {
2de390ba 1090 netdev_info(bond->dev, "Setting primary slave to None\n");
0a98a0d1 1091 bond->primary_slave = NULL;
1092 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1093 bond_select_active_slave(bond);
1094 goto out;
1095 }
1096
1097 bond_for_each_slave(bond, slave, iter) {
1098 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
2de390ba
VF
1099 netdev_info(bond->dev, "Setting %s as primary slave\n",
1100 slave->dev->name);
0a98a0d1 1101 bond->primary_slave = slave;
1102 strcpy(bond->params.primary, slave->dev->name);
1103 bond_select_active_slave(bond);
1104 goto out;
1105 }
1106 }
1107
c59ab673 1108 if (bond->primary_slave) {
2de390ba 1109 netdev_info(bond->dev, "Setting primary slave to None\n");
c59ab673 1110 bond->primary_slave = NULL;
1111 bond_select_active_slave(bond);
1112 }
0a98a0d1 1113 strncpy(bond->params.primary, primary, IFNAMSIZ);
1114 bond->params.primary[IFNAMSIZ - 1] = 0;
1115
2de390ba
VF
1116 netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n",
1117 primary, bond->dev->name);
0a98a0d1 1118
1119out:
1120 write_unlock_bh(&bond->curr_slave_lock);
1121 read_unlock(&bond->lock);
1122 unblock_netpoll_tx();
1123
180222f0 1124 return 0;
0a98a0d1 1125}
8a41ae44 1126
f3253339 1127static int bond_option_primary_reselect_set(struct bonding *bond,
28f084cc 1128 const struct bond_opt_value *newval)
8a41ae44 1129{
2de390ba
VF
1130 netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1131 newval->string, newval->value);
388d3a6d 1132 bond->params.primary_reselect = newval->value;
8a41ae44 1133
1134 block_netpoll_tx();
1135 write_lock_bh(&bond->curr_slave_lock);
1136 bond_select_active_slave(bond);
1137 write_unlock_bh(&bond->curr_slave_lock);
1138 unblock_netpoll_tx();
1139
1140 return 0;
1141}
89901972 1142
f3253339 1143static int bond_option_fail_over_mac_set(struct bonding *bond,
28f084cc 1144 const struct bond_opt_value *newval)
89901972 1145{
2de390ba
VF
1146 netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1147 newval->string, newval->value);
1df6b6aa 1148 bond->params.fail_over_mac = newval->value;
89901972 1149
1150 return 0;
1151}
f70161c6 1152
f3253339 1153static int bond_option_xmit_hash_policy_set(struct bonding *bond,
28f084cc 1154 const struct bond_opt_value *newval)
f70161c6 1155{
2de390ba
VF
1156 netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1157 newval->string, newval->value);
a4b32ce7 1158 bond->params.xmit_policy = newval->value;
f70161c6 1159
1160 return 0;
1161}
d8838de7 1162
f3253339 1163static int bond_option_resend_igmp_set(struct bonding *bond,
28f084cc 1164 const struct bond_opt_value *newval)
d8838de7 1165{
2de390ba
VF
1166 netdev_info(bond->dev, "Setting resend_igmp to %llu\n",
1167 newval->value);
105c8fb6 1168 bond->params.resend_igmp = newval->value;
d8838de7 1169
1170 return 0;
1171}
2c9839c1 1172
f3253339 1173static int bond_option_num_peer_notif_set(struct bonding *bond,
28f084cc 1174 const struct bond_opt_value *newval)
2c9839c1 1175{
ef56becb
NA
1176 bond->params.num_peer_notif = newval->value;
1177
2c9839c1 1178 return 0;
1179}
1cc0b1e3 1180
f3253339 1181static int bond_option_all_slaves_active_set(struct bonding *bond,
28f084cc 1182 const struct bond_opt_value *newval)
1cc0b1e3 1183{
1184 struct list_head *iter;
1185 struct slave *slave;
1186
3df01162 1187 if (newval->value == bond->params.all_slaves_active)
1cc0b1e3 1188 return 0;
3df01162 1189 bond->params.all_slaves_active = newval->value;
1cc0b1e3 1190 bond_for_each_slave(bond, slave, iter) {
1191 if (!bond_is_active_slave(slave)) {
3df01162 1192 if (newval->value)
1cc0b1e3 1193 slave->inactive = 0;
1194 else
1195 slave->inactive = 1;
1196 }
1197 }
1198
1199 return 0;
1200}
7d101008 1201
f3253339 1202static int bond_option_min_links_set(struct bonding *bond,
28f084cc 1203 const struct bond_opt_value *newval)
7d101008 1204{
2de390ba
VF
1205 netdev_info(bond->dev, "Setting min links value to %llu\n",
1206 newval->value);
633ddc9e 1207 bond->params.min_links = newval->value;
7d101008 1208
1209 return 0;
1210}
8d836d09 1211
f3253339 1212static int bond_option_lp_interval_set(struct bonding *bond,
28f084cc 1213 const struct bond_opt_value *newval)
8d836d09 1214{
4325b374 1215 bond->params.lp_interval = newval->value;
8d836d09 1216
1217 return 0;
1218}
c13ab3ff 1219
f3253339 1220static int bond_option_pps_set(struct bonding *bond,
28f084cc 1221 const struct bond_opt_value *newval)
c13ab3ff 1222{
aa59d851
NA
1223 bond->params.packets_per_slave = newval->value;
1224 if (newval->value > 0) {
809fa972 1225 bond->params.reciprocal_packets_per_slave =
aa59d851 1226 reciprocal_value(newval->value);
809fa972
HFS
1227 } else {
1228 /* reciprocal_packets_per_slave is unused if
1229 * packets_per_slave is 0 or 1, just initialize it
1230 */
1231 bond->params.reciprocal_packets_per_slave =
1232 (struct reciprocal_value) { 0 };
1233 }
c13ab3ff 1234
1235 return 0;
1236}
998e40bb 1237
f3253339 1238static int bond_option_lacp_rate_set(struct bonding *bond,
28f084cc 1239 const struct bond_opt_value *newval)
998e40bb 1240{
2de390ba
VF
1241 netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n",
1242 newval->string, newval->value);
d3131de7 1243 bond->params.lacp_fast = newval->value;
3243c47b 1244 bond_3ad_update_lacp_rate(bond);
998e40bb 1245
1246 return 0;
1247}
ec029fac 1248
f3253339 1249static int bond_option_ad_select_set(struct bonding *bond,
28f084cc 1250 const struct bond_opt_value *newval)
ec029fac 1251{
2de390ba
VF
1252 netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n",
1253 newval->string, newval->value);
9e5f5eeb 1254 bond->params.ad_select = newval->value;
ec029fac 1255
1256 return 0;
1257}
24089ba1 1258
f3253339 1259static int bond_option_queue_id_set(struct bonding *bond,
28f084cc 1260 const struct bond_opt_value *newval)
24089ba1
NA
1261{
1262 struct slave *slave, *update_slave;
1263 struct net_device *sdev;
1264 struct list_head *iter;
1265 char *delim;
1266 int ret = 0;
1267 u16 qid;
1268
1269 /* delim will point to queue id if successful */
1270 delim = strchr(newval->string, ':');
1271 if (!delim)
1272 goto err_no_cmd;
1273
1274 /* Terminate string that points to device name and bump it
1275 * up one, so we can read the queue id there.
1276 */
1277 *delim = '\0';
1278 if (sscanf(++delim, "%hd\n", &qid) != 1)
1279 goto err_no_cmd;
1280
1281 /* Check buffer length, valid ifname and queue id */
c313c89e 1282 if (!dev_valid_name(newval->string) ||
24089ba1
NA
1283 qid > bond->dev->real_num_tx_queues)
1284 goto err_no_cmd;
1285
1286 /* Get the pointer to that interface if it exists */
1287 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1288 if (!sdev)
1289 goto err_no_cmd;
1290
1291 /* Search for thes slave and check for duplicate qids */
1292 update_slave = NULL;
1293 bond_for_each_slave(bond, slave, iter) {
1294 if (sdev == slave->dev)
1295 /* We don't need to check the matching
1296 * slave for dups, since we're overwriting it
1297 */
1298 update_slave = slave;
1299 else if (qid && qid == slave->queue_id) {
1300 goto err_no_cmd;
1301 }
1302 }
1303
1304 if (!update_slave)
1305 goto err_no_cmd;
1306
1307 /* Actually set the qids for the slave */
1308 update_slave->queue_id = qid;
1309
1310out:
1311 return ret;
1312
1313err_no_cmd:
2de390ba 1314 netdev_info(bond->dev, "invalid input for queue_id set\n");
24089ba1
NA
1315 ret = -EPERM;
1316 goto out;
1317
1318}
0e2e5b66 1319
f3253339 1320static int bond_option_slaves_set(struct bonding *bond,
28f084cc 1321 const struct bond_opt_value *newval)
0e2e5b66
NA
1322{
1323 char command[IFNAMSIZ + 1] = { 0, };
1324 struct net_device *dev;
1325 char *ifname;
1326 int ret;
1327
1328 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1329 ifname = command + 1;
1330 if ((strlen(command) <= 1) ||
1331 !dev_valid_name(ifname))
1332 goto err_no_cmd;
1333
1334 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1335 if (!dev) {
2de390ba
VF
1336 netdev_info(bond->dev, "interface %s does not exist!\n",
1337 ifname);
0e2e5b66
NA
1338 ret = -ENODEV;
1339 goto out;
1340 }
1341
1342 switch (command[0]) {
1343 case '+':
2de390ba 1344 netdev_info(bond->dev, "Adding slave %s\n", dev->name);
0e2e5b66
NA
1345 ret = bond_enslave(bond->dev, dev);
1346 break;
1347
1348 case '-':
2de390ba 1349 netdev_info(bond->dev, "Removing slave %s\n", dev->name);
0e2e5b66
NA
1350 ret = bond_release(bond->dev, dev);
1351 break;
1352
1353 default:
1354 goto err_no_cmd;
1355 }
1356
1357out:
1358 return ret;
1359
1360err_no_cmd:
2de390ba 1361 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
0e2e5b66
NA
1362 ret = -EPERM;
1363 goto out;
1364}
e9f0fb88
MB
1365
1366static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1367 const struct bond_opt_value *newval)
1368{
2de390ba
VF
1369 netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1370 newval->string, newval->value);
e9f0fb88
MB
1371 bond->params.tlb_dynamic_lb = newval->value;
1372
1373 return 0;
1374}