projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
bonding: convert all_slaves_active to use the new option API
[deliverable/linux.git] / drivers / net / bonding / bond_options.c
CommitLineData
72be35fe
JP		 1/*
2 * drivers/net/bond/bond_options.c - bonding options
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
eecdaa6e 4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
72be35fe
JP		 5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14#include <linux/errno.h>
15#include <linux/if.h>
d9e32b21
JP		 16#include <linux/netdevice.h>
17#include <linux/rwlock.h>
18#include <linux/rcupdate.h>
09117362 19#include <linux/ctype.h>
4fb0ef58 20#include <linux/inet.h>
72be35fe
JP		 21#include "bonding.h"
22
2b3798d5
NA		 23static struct bond_opt_value bond_mode_tbl[] = {
24 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
25 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
26 { "balance-xor", BOND_MODE_XOR, 0},
27 { "broadcast", BOND_MODE_BROADCAST, 0},
28 { "802.3ad", BOND_MODE_8023AD, 0},
29 { "balance-tlb", BOND_MODE_TLB, 0},
30 { "balance-alb", BOND_MODE_ALB, 0},
31 { NULL, -1, 0},
32};
33
aa59d851
NA		 34static struct bond_opt_value bond_pps_tbl[] = {
35 { "default", 1, BOND_VALFLAG_DEFAULT},
36 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
37 { NULL, -1, 0},
38};
39
a4b32ce7
NA		 40static struct bond_opt_value bond_xmit_hashtype_tbl[] = {
41 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
42 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
43 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
44 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
45 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
46 { NULL, -1, 0},
47};
48
16228881
NA		 49static struct bond_opt_value bond_arp_validate_tbl[] = {
50 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
51 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
52 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
53 { "all", BOND_ARP_VALIDATE_ALL, 0},
54 { NULL, -1, 0},
55};
56
edf36b24
NA		 57static struct bond_opt_value bond_arp_all_targets_tbl[] = {
58 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
59 { "all", BOND_ARP_TARGETS_ALL, 0},
60 { NULL, -1, 0},
61};
62
1df6b6aa
NA		 63static struct bond_opt_value bond_fail_over_mac_tbl[] = {
64 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
65 { "active", BOND_FOM_ACTIVE, 0},
66 { "follow", BOND_FOM_FOLLOW, 0},
67 { NULL, -1, 0},
68};
69
7bdb04ed
NA		 70static struct bond_opt_value bond_intmax_tbl[] = {
71 { "off", 0, BOND_VALFLAG_DEFAULT},
72 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
73};
74
d3131de7
NA		 75static struct bond_opt_value bond_lacp_rate_tbl[] = {
76 { "slow", AD_LACP_SLOW, 0},
77 { "fast", AD_LACP_FAST, 0},
78 { NULL, -1, 0},
79};
80
9e5f5eeb
NA		 81static struct bond_opt_value bond_ad_select_tbl[] = {
82 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
83 { "bandwidth", BOND_AD_BANDWIDTH, 0},
84 { "count", BOND_AD_COUNT, 0},
85 { NULL, -1, 0},
86};
87
ef56becb
NA		 88static struct bond_opt_value bond_num_peer_notif_tbl[] = {
89 { "off", 0, 0},
90 { "maxval", 255, BOND_VALFLAG_MAX},
91 { "default", 1, BOND_VALFLAG_DEFAULT},
92 { NULL, -1, 0}
93};
94
388d3a6d
NA		 95static struct bond_opt_value bond_primary_reselect_tbl[] = {
96 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
97 { "better", BOND_PRI_RESELECT_BETTER, 0},
98 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
99 { NULL, -1},
100};
101
0fff0608
NA		 102static struct bond_opt_value bond_use_carrier_tbl[] = {
103 { "off", 0, 0},
104 { "on", 1, BOND_VALFLAG_DEFAULT},
105 { NULL, -1, 0}
106};
107
3df01162
NA		 108static struct bond_opt_value bond_all_slaves_active_tbl[] = {
109 { "off", 0, BOND_VALFLAG_DEFAULT},
110 { "on", 1, 0},
111 { NULL, -1, 0}
112};
113
09117362 114static struct bond_option bond_opts[] = {
2b3798d5
NA		 115 [BOND_OPT_MODE] = {
116 .id = BOND_OPT_MODE,
117 .name = "mode",
118 .desc = "bond device mode",
119 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
120 .values = bond_mode_tbl,
121 .set = bond_option_mode_set
122 },
aa59d851
NA		 123 [BOND_OPT_PACKETS_PER_SLAVE] = {
124 .id = BOND_OPT_PACKETS_PER_SLAVE,
125 .name = "packets_per_slave",
126 .desc = "Packets to send per slave in RR mode",
127 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
128 .values = bond_pps_tbl,
129 .set = bond_option_pps_set
130 },
a4b32ce7
NA		 131 [BOND_OPT_XMIT_HASH] = {
132 .id = BOND_OPT_XMIT_HASH,
133 .name = "xmit_hash_policy",
134 .desc = "balance-xor and 802.3ad hashing method",
135 .values = bond_xmit_hashtype_tbl,
136 .set = bond_option_xmit_hash_policy_set
137 },
16228881
NA		 138 [BOND_OPT_ARP_VALIDATE] = {
139 .id = BOND_OPT_ARP_VALIDATE,
140 .name = "arp_validate",
141 .desc = "validate src/dst of ARP probes",
142 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP)),
143 .values = bond_arp_validate_tbl,
144 .set = bond_option_arp_validate_set
145 },
edf36b24
NA		 146 [BOND_OPT_ARP_ALL_TARGETS] = {
147 .id = BOND_OPT_ARP_ALL_TARGETS,
148 .name = "arp_all_targets",
149 .desc = "fail on any/all arp targets timeout",
150 .values = bond_arp_all_targets_tbl,
151 .set = bond_option_arp_all_targets_set
152 },
1df6b6aa
NA		 153 [BOND_OPT_FAIL_OVER_MAC] = {
154 .id = BOND_OPT_FAIL_OVER_MAC,
155 .name = "fail_over_mac",
156 .desc = "For active-backup, do not set all slaves to the same MAC",
157 .flags = BOND_OPTFLAG_NOSLAVES,
158 .values = bond_fail_over_mac_tbl,
159 .set = bond_option_fail_over_mac_set
160 },
7bdb04ed
NA		 161 [BOND_OPT_ARP_INTERVAL] = {
162 .id = BOND_OPT_ARP_INTERVAL,
163 .name = "arp_interval",
164 .desc = "arp interval in milliseconds",
165 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
166 BIT(BOND_MODE_ALB),
167 .values = bond_intmax_tbl,
168 .set = bond_option_arp_interval_set
169 },
4fb0ef58
NA		 170 [BOND_OPT_ARP_TARGETS] = {
171 .id = BOND_OPT_ARP_TARGETS,
172 .name = "arp_ip_target",
173 .desc = "arp targets in n.n.n.n form",
174 .flags = BOND_OPTFLAG_RAWVAL,
175 .set = bond_option_arp_ip_targets_set
176 },
25a9b54a
NA		 177 [BOND_OPT_DOWNDELAY] = {
178 .id = BOND_OPT_DOWNDELAY,
179 .name = "downdelay",
180 .desc = "Delay before considering link down, in milliseconds",
181 .values = bond_intmax_tbl,
182 .set = bond_option_downdelay_set
183 },
e4994612
NA		 184 [BOND_OPT_UPDELAY] = {
185 .id = BOND_OPT_UPDELAY,
186 .name = "updelay",
187 .desc = "Delay before considering link up, in milliseconds",
188 .values = bond_intmax_tbl,
189 .set = bond_option_updelay_set
190 },
d3131de7
NA		 191 [BOND_OPT_LACP_RATE] = {
192 .id = BOND_OPT_LACP_RATE,
193 .name = "lacp_rate",
194 .desc = "LACPDU tx rate to request from 802.3ad partner",
195 .flags = BOND_OPTFLAG_IFDOWN,
196 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
197 .values = bond_lacp_rate_tbl,
198 .set = bond_option_lacp_rate_set
199 },
633ddc9e
NA		 200 [BOND_OPT_MINLINKS] = {
201 .id = BOND_OPT_MINLINKS,
202 .name = "min_links",
203 .desc = "Minimum number of available links before turning on carrier",
204 .values = bond_intmax_tbl,
205 .set = bond_option_min_links_set
206 },
9e5f5eeb
NA		 207 [BOND_OPT_AD_SELECT] = {
208 .id = BOND_OPT_AD_SELECT,
209 .name = "ad_select",
210 .desc = "803.ad aggregation selection logic",
211 .flags = BOND_OPTFLAG_IFDOWN,
212 .values = bond_ad_select_tbl,
213 .set = bond_option_ad_select_set
214 },
ef56becb
NA		 215 [BOND_OPT_NUM_PEER_NOTIF] = {
216 .id = BOND_OPT_NUM_PEER_NOTIF,
217 .name = "num_unsol_na",
218 .desc = "Number of peer notifications to send on failover event",
219 .values = bond_num_peer_notif_tbl,
220 .set = bond_option_num_peer_notif_set
221 },
b98d9c66
NA		 222 [BOND_OPT_MIIMON] = {
223 .id = BOND_OPT_MIIMON,
224 .name = "miimon",
225 .desc = "Link check interval in milliseconds",
226 .values = bond_intmax_tbl,
227 .set = bond_option_miimon_set
228 },
180222f0
NA		 229 [BOND_OPT_PRIMARY] = {
230 .id = BOND_OPT_PRIMARY,
231 .name = "primary",
232 .desc = "Primary network device to use",
233 .flags = BOND_OPTFLAG_RAWVAL,
234 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
235 BIT(BOND_MODE_TLB) |
236 BIT(BOND_MODE_ALB)),
237 .set = bond_option_primary_set
238 },
388d3a6d
NA		 239 [BOND_OPT_PRIMARY_RESELECT] = {
240 .id = BOND_OPT_PRIMARY_RESELECT,
241 .name = "primary_reselect",
242 .desc = "Reselect primary slave once it comes up",
243 .values = bond_primary_reselect_tbl,
244 .set = bond_option_primary_reselect_set
245 },
0fff0608
NA		 246 [BOND_OPT_USE_CARRIER] = {
247 .id = BOND_OPT_USE_CARRIER,
248 .name = "use_carrier",
249 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
250 .values = bond_use_carrier_tbl,
251 .set = bond_option_use_carrier_set
252 },
d1fbd3ed
NA		 253 [BOND_OPT_ACTIVE_SLAVE] = {
254 .id = BOND_OPT_ACTIVE_SLAVE,
255 .name = "active_slave",
256 .desc = "Currently active slave",
257 .flags = BOND_OPTFLAG_RAWVAL,
258 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
259 BIT(BOND_MODE_TLB) |
260 BIT(BOND_MODE_ALB)),
261 .set = bond_option_active_slave_set
262 },
24089ba1
NA		 263 [BOND_OPT_QUEUE_ID] = {
264 .id = BOND_OPT_QUEUE_ID,
265 .name = "queue_id",
266 .desc = "Set queue id of a slave",
267 .flags = BOND_OPTFLAG_RAWVAL,
268 .set = bond_option_queue_id_set
269 },
3df01162
NA		 270 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
271 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
272 .name = "all_slaves_active",
273 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
274 .values = bond_all_slaves_active_tbl,
275 .set = bond_option_all_slaves_active_set
276 },
09117362
NA		 277 { }
278};
279
280/* Searches for a value in opt's values[] table */
281struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
282{
283 struct bond_option *opt;
284 int i;
285
286 opt = bond_opt_get(option);
287 if (WARN_ON(!opt))
288 return NULL;
289 for (i = 0; opt->values && opt->values[i].string; i++)
290 if (opt->values[i].value == val)
291 return &opt->values[i];
292
293 return NULL;
294}
295
296/* Searches for a value in opt's values[] table which matches the flagmask */
297static struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
298 u32 flagmask)
299{
300 int i;
301
302 for (i = 0; opt->values && opt->values[i].string; i++)
303 if (opt->values[i].flags & flagmask)
304 return &opt->values[i];
305
306 return NULL;
307}
308
309/* If maxval is missing then there's no range to check. In case minval is
310 * missing then it's considered to be 0.
311 */
312static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
313{
314 struct bond_opt_value *minval, *maxval;
315
316 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
317 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
318 if (!maxval || (minval && val < minval->value) || val > maxval->value)
319 return false;
320
321 return true;
322}
323
324/**
325 * bond_opt_parse - parse option value
326 * @opt: the option to parse against
327 * @val: value to parse
328 *
329 * This function tries to extract the value from @val and check if it's
330 * a possible match for the option and returns NULL if a match isn't found,
331 * or the struct_opt_value that matched. It also strips the new line from
332 * @val->string if it's present.
333 */
334struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
335 struct bond_opt_value *val)
336{
337 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
338 struct bond_opt_value *tbl, *ret = NULL;
339 bool checkval;
340 int i, rv;
341
342 /* No parsing if the option wants a raw val */
343 if (opt->flags & BOND_OPTFLAG_RAWVAL)
344 return val;
345
346 tbl = opt->values;
347 if (!tbl)
348 goto out;
349
350 /* ULLONG_MAX is used to bypass string processing */
351 checkval = val->value != ULLONG_MAX;
352 if (!checkval) {
353 if (!val->string)
354 goto out;
355 p = strchr(val->string, '\n');
356 if (p)
357 *p = '\0';
358 for (p = val->string; *p; p++)
359 if (!(isdigit(*p) || isspace(*p)))
360 break;
361 /* The following code extracts the string to match or the value
362 * and sets checkval appropriately
363 */
364 if (*p) {
365 rv = sscanf(val->string, "%32s", valstr);
366 } else {
367 rv = sscanf(val->string, "%llu", &val->value);
368 checkval = true;
369 }
370 if (!rv)
371 goto out;
372 }
373
374 for (i = 0; tbl[i].string; i++) {
375 /* Check for exact match */
376 if (checkval) {
377 if (val->value == tbl[i].value)
378 ret = &tbl[i];
379 } else {
380 if (!strcmp(valstr, "default") &&
381 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
382 ret = &tbl[i];
383
384 if (!strcmp(valstr, tbl[i].string))
385 ret = &tbl[i];
386 }
387 /* Found an exact match */
388 if (ret)
389 goto out;
390 }
391 /* Possible range match */
392 if (checkval && bond_opt_check_range(opt, val->value))
393 ret = val;
394out:
395 return ret;
396}
397
398/* Check opt's dependencies against bond mode and currently set options */
399static int bond_opt_check_deps(struct bonding *bond,
400 const struct bond_option *opt)
401{
402 struct bond_params *params = &bond->params;
403
404 if (test_bit(params->mode, &opt->unsuppmodes))
405 return -EACCES;
406 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
407 return -ENOTEMPTY;
408 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
409 return -EBUSY;
410
411 return 0;
412}
413
414static void bond_opt_dep_print(struct bonding *bond,
415 const struct bond_option *opt)
416{
2b3798d5 417 struct bond_opt_value *modeval;
09117362
NA		 418 struct bond_params *params;
419
420 params = &bond->params;
2b3798d5 421 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
09117362 422 if (test_bit(params->mode, &opt->unsuppmodes))
2b3798d5
NA		 423 pr_err("%s: option %s: mode dependency failed, not supported in mode %s(%llu)\n",
424 bond->dev->name, opt->name,
425 modeval->string, modeval->value);
09117362
NA		 426}
427
428static void bond_opt_error_interpret(struct bonding *bond,
429 const struct bond_option *opt,
430 int error, struct bond_opt_value *val)
431{
432 struct bond_opt_value *minval, *maxval;
433 char *p;
434
435 switch (error) {
436 case -EINVAL:
437 if (val) {
438 if (val->string) {
439 /* sometimes RAWVAL opts may have new lines */
440 p = strchr(val->string, '\n');
441 if (p)
442 *p = '\0';
443 pr_err("%s: option %s: invalid value (%s).\n",
444 bond->dev->name, opt->name, val->string);
445 } else {
446 pr_err("%s: option %s: invalid value (%llu).\n",
447 bond->dev->name, opt->name, val->value);
448 }
449 }
450 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
451 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
452 if (!maxval)
453 break;
454 pr_err("%s: option %s: allowed values %llu - %llu.\n",
455 bond->dev->name, opt->name, minval ? minval->value : 0,
456 maxval->value);
457 break;
458 case -EACCES:
459 bond_opt_dep_print(bond, opt);
460 break;
461 case -ENOTEMPTY:
462 pr_err("%s: option %s: unable to set because the bond device has slaves.\n",
463 bond->dev->name, opt->name);
464 break;
465 case -EBUSY:
466 pr_err("%s: option %s: unable to set because the bond device is up.\n",
467 bond->dev->name, opt->name);
468 break;
469 default:
470 break;
471 }
472}
473
474/**
475 * __bond_opt_set - set a bonding option
476 * @bond: target bond device
477 * @option: option to set
478 * @val: value to set it to
479 *
480 * This function is used to change the bond's option value, it can be
481 * used for both enabling/changing an option and for disabling it. RTNL lock
482 * must be obtained before calling this function.
483 */
484int __bond_opt_set(struct bonding *bond,
485 unsigned int option, struct bond_opt_value *val)
486{
487 struct bond_opt_value *retval = NULL;
488 const struct bond_option *opt;
489 int ret = -ENOENT;
490
491 ASSERT_RTNL();
492
493 opt = bond_opt_get(option);
494 if (WARN_ON(!val) || WARN_ON(!opt))
495 goto out;
496 ret = bond_opt_check_deps(bond, opt);
497 if (ret)
498 goto out;
499 retval = bond_opt_parse(opt, val);
500 if (!retval) {
501 ret = -EINVAL;
502 goto out;
503 }
504 ret = opt->set(bond, retval);
505out:
506 if (ret)
507 bond_opt_error_interpret(bond, opt, ret, val);
508
509 return ret;
510}
511
512/**
513 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
514 * @bond: target bond device
515 * @option: option to set
516 * @buf: value to set it to
517 *
518 * This function tries to acquire RTNL without blocking and if successful
519 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
520 */
521int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
522{
523 struct bond_opt_value optval;
524 int ret;
525
526 if (!rtnl_trylock())
527 return restart_syscall();
528 bond_opt_initstr(&optval, buf);
529 ret = __bond_opt_set(bond, option, &optval);
530 rtnl_unlock();
531
532 return ret;
533}
534
535/**
536 * bond_opt_get - get a pointer to an option
537 * @option: option for which to return a pointer
538 *
539 * This function checks if option is valid and if so returns a pointer
540 * to its entry in the bond_opts[] option array.
541 */
542struct bond_option *bond_opt_get(unsigned int option)
543{
544 if (!BOND_OPT_VALID(option))
545 return NULL;
546
547 return &bond_opts[option];
548}
549
2b3798d5 550int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval)
72be35fe 551{
2b3798d5 552 if (BOND_NO_USES_ARP(newval->value) && bond->params.arp_interval) {
fe9d04af 553 pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n",
2b3798d5 554 bond->dev->name, newval->string);
fe9d04af 555 /* disable arp monitoring */
556 bond->params.arp_interval = 0;
557 /* set miimon to default value */
558 bond->params.miimon = BOND_DEFAULT_MIIMON;
559 pr_info("%s: Setting MII monitoring interval to %d.\n",
560 bond->dev->name, bond->params.miimon);
72be35fe
JP		 561 }
562
563 /* don't cache arp_validate between modes */
564 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
2b3798d5
NA		 565 bond->params.mode = newval->value;
566
72be35fe
JP		 567 return 0;
568}
d9e32b21 569
752d48b5
JP		 570static struct net_device *__bond_option_active_slave_get(struct bonding *bond,
571 struct slave *slave)
572{
573 return USES_PRIMARY(bond->params.mode) && slave ? slave->dev : NULL;
574}
575
576struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
577{
578 struct slave *slave = rcu_dereference(bond->curr_active_slave);
579
580 return __bond_option_active_slave_get(bond, slave);
581}
582
583struct net_device *bond_option_active_slave_get(struct bonding *bond)
584{
585 return __bond_option_active_slave_get(bond, bond->curr_active_slave);
586}
587
d9e32b21 588int bond_option_active_slave_set(struct bonding *bond,
d1fbd3ed 589 struct bond_opt_value *newval)
d9e32b21 590{
d1fbd3ed
NA		 591 char ifname[IFNAMSIZ] = { 0, };
592 struct net_device *slave_dev;
d9e32b21
JP		 593 int ret = 0;
594
d1fbd3ed
NA		 595 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
596 if (!strlen(ifname) || newval->string[0] == '\n') {
597 slave_dev = NULL;
598 } else {
599 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
600 if (!slave_dev)
601 return -ENODEV;
602 }
603
d9e32b21
JP		 604 if (slave_dev) {
605 if (!netif_is_bond_slave(slave_dev)) {
606 pr_err("Device %s is not bonding slave.\n",
607 slave_dev->name);
608 return -EINVAL;
609 }
610
611 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
612 pr_err("%s: Device %s is not our slave.\n",
613 bond->dev->name, slave_dev->name);
614 return -EINVAL;
615 }
616 }
617
d9e32b21 618 block_netpoll_tx();
d9e32b21
JP		 619 write_lock_bh(&bond->curr_slave_lock);
620
621 /* check to see if we are clearing active */
622 if (!slave_dev) {
623 pr_info("%s: Clearing current active slave.\n",
624 bond->dev->name);
625 rcu_assign_pointer(bond->curr_active_slave, NULL);
626 bond_select_active_slave(bond);
627 } else {
628 struct slave *old_active = bond->curr_active_slave;
629 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
630
631 BUG_ON(!new_active);
632
633 if (new_active == old_active) {
634 /* do nothing */
635 pr_info("%s: %s is already the current active slave.\n",
636 bond->dev->name, new_active->dev->name);
637 } else {
638 if (old_active && (new_active->link == BOND_LINK_UP) &&
639 IS_UP(new_active->dev)) {
640 pr_info("%s: Setting %s as active slave.\n",
641 bond->dev->name, new_active->dev->name);
642 bond_change_active_slave(bond, new_active);
643 } else {
644 pr_err("%s: Could not set %s as active slave; either %s is down or the link is down.\n",
645 bond->dev->name, new_active->dev->name,
646 new_active->dev->name);
647 ret = -EINVAL;
648 }
649 }
650 }
651
652 write_unlock_bh(&bond->curr_slave_lock);
d9e32b21 653 unblock_netpoll_tx();
d1fbd3ed 654
d9e32b21
JP		 655 return ret;
656}
eecdaa6e 657
b98d9c66 658int bond_option_miimon_set(struct bonding *bond, struct bond_opt_value *newval)
eecdaa6e 659{
b98d9c66
NA		 660 pr_info("%s: Setting MII monitoring interval to %llu.\n",
661 bond->dev->name, newval->value);
662 bond->params.miimon = newval->value;
eecdaa6e 663 if (bond->params.updelay)
664 pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value.\n",
665 bond->dev->name,
666 bond->params.updelay * bond->params.miimon);
667 if (bond->params.downdelay)
668 pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value.\n",
669 bond->dev->name,
670 bond->params.downdelay * bond->params.miimon);
b98d9c66 671 if (newval->value && bond->params.arp_interval) {
eecdaa6e 672 pr_info("%s: MII monitoring cannot be used with ARP monitoring. Disabling ARP monitoring...\n",
673 bond->dev->name);
674 bond->params.arp_interval = 0;
675 if (bond->params.arp_validate)
676 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
677 }
678 if (bond->dev->flags & IFF_UP) {
679 /* If the interface is up, we may need to fire off
680 * the MII timer. If the interface is down, the
681 * timer will get fired off when the open function
682 * is called.
683 */
b98d9c66 684 if (!newval->value) {
eecdaa6e 685 cancel_delayed_work_sync(&bond->mii_work);
686 } else {
687 cancel_delayed_work_sync(&bond->arp_work);
688 queue_delayed_work(bond->wq, &bond->mii_work, 0);
689 }
690 }
b98d9c66 691
eecdaa6e 692 return 0;
693}
25852e29 694
e4994612 695int bond_option_updelay_set(struct bonding *bond, struct bond_opt_value *newval)
25852e29 696{
e4994612 697 if (!bond->params.miimon) {
25852e29 698 pr_err("%s: Unable to set up delay as MII monitoring is disabled\n",
699 bond->dev->name);
700 return -EPERM;
701 }
e4994612
NA		 702 if ((newval->value % bond->params.miimon) != 0) {
703 pr_warn("%s: Warning: up delay (%llu) is not a multiple of miimon (%d), updelay rounded to %llu ms\n",
704 bond->dev->name, newval->value,
705 bond->params.miimon,
706 (newval->value / bond->params.miimon) *
707 bond->params.miimon);
25852e29 708 }
e4994612
NA		 709 bond->params.updelay = newval->value / bond->params.miimon;
710 pr_info("%s: Setting up delay to %d.\n",
711 bond->dev->name,
712 bond->params.updelay * bond->params.miimon);
25852e29 713
714 return 0;
715}
c7461f9b 716
25a9b54a
NA		 717int bond_option_downdelay_set(struct bonding *bond,
718 struct bond_opt_value *newval)
c7461f9b 719{
25a9b54a 720 if (!bond->params.miimon) {
c7461f9b 721 pr_err("%s: Unable to set down delay as MII monitoring is disabled\n",
722 bond->dev->name);
723 return -EPERM;
724 }
25a9b54a
NA		 725 if ((newval->value % bond->params.miimon) != 0) {
726 pr_warn("%s: Warning: down delay (%llu) is not a multiple of miimon (%d), delay rounded to %llu ms\n",
727 bond->dev->name, newval->value,
728 bond->params.miimon,
729 (newval->value / bond->params.miimon) *
730 bond->params.miimon);
c7461f9b 731 }
25a9b54a
NA		 732 bond->params.downdelay = newval->value / bond->params.miimon;
733 pr_info("%s: Setting down delay to %d.\n",
734 bond->dev->name,
735 bond->params.downdelay * bond->params.miimon);
c7461f9b 736
737 return 0;
738}
9f53e14e 739
0fff0608
NA		 740int bond_option_use_carrier_set(struct bonding *bond,
741 struct bond_opt_value *newval)
9f53e14e 742{
0fff0608
NA		 743 pr_info("%s: Setting use_carrier to %llu.\n",
744 bond->dev->name, newval->value);
745 bond->params.use_carrier = newval->value;
9f53e14e 746
747 return 0;
748}
06151dbc 749
7bdb04ed
NA		 750int bond_option_arp_interval_set(struct bonding *bond,
751 struct bond_opt_value *newval)
06151dbc 752{
7bdb04ed
NA		 753 pr_info("%s: Setting ARP monitoring interval to %llu.\n",
754 bond->dev->name, newval->value);
755 bond->params.arp_interval = newval->value;
756 if (newval->value) {
06151dbc 757 if (bond->params.miimon) {
758 pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring.\n",
759 bond->dev->name, bond->dev->name);
760 bond->params.miimon = 0;
761 }
762 if (!bond->params.arp_targets[0])
763 pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified.\n",
764 bond->dev->name);
765 }
766 if (bond->dev->flags & IFF_UP) {
767 /* If the interface is up, we may need to fire off
768 * the ARP timer. If the interface is down, the
769 * timer will get fired off when the open function
770 * is called.
771 */
7bdb04ed 772 if (!newval->value) {
06151dbc 773 if (bond->params.arp_validate)
774 bond->recv_probe = NULL;
775 cancel_delayed_work_sync(&bond->arp_work);
776 } else {
777 /* arp_validate can be set only in active-backup mode */
778 if (bond->params.arp_validate)
779 bond->recv_probe = bond_arp_rcv;
780 cancel_delayed_work_sync(&bond->mii_work);
781 queue_delayed_work(bond->wq, &bond->arp_work, 0);
782 }
783 }
784
785 return 0;
786}
7f28fa10 787
788static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
789 __be32 target,
790 unsigned long last_rx)
791{
792 __be32 *targets = bond->params.arp_targets;
793 struct list_head *iter;
794 struct slave *slave;
795
796 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
797 bond_for_each_slave(bond, slave, iter)
798 slave->target_last_arp_rx[slot] = last_rx;
799 targets[slot] = target;
800 }
801}
802
803static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
804{
805 __be32 *targets = bond->params.arp_targets;
806 int ind;
807
808 if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
809 pr_err("%s: invalid ARP target %pI4 specified for addition\n",
810 bond->dev->name, &target);
811 return -EINVAL;
812 }
813
814 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
815 pr_err("%s: ARP target %pI4 is already present\n",
816 bond->dev->name, &target);
817 return -EINVAL;
818 }
819
820 ind = bond_get_targets_ip(targets, 0); /* first free slot */
821 if (ind == -1) {
822 pr_err("%s: ARP target table is full!\n",
823 bond->dev->name);
824 return -EINVAL;
825 }
826
827 pr_info("%s: adding ARP target %pI4.\n", bond->dev->name, &target);
828
829 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
830
831 return 0;
832}
833
834int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
835{
836 int ret;
837
838 /* not to race with bond_arp_rcv */
839 write_lock_bh(&bond->lock);
840 ret = _bond_option_arp_ip_target_add(bond, target);
841 write_unlock_bh(&bond->lock);
842
843 return ret;
844}
845
846int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
847{
848 __be32 *targets = bond->params.arp_targets;
849 struct list_head *iter;
850 struct slave *slave;
851 unsigned long *targets_rx;
852 int ind, i;
853
854 if (IS_IP_TARGET_UNUSABLE_ADDRESS(target)) {
855 pr_err("%s: invalid ARP target %pI4 specified for removal\n",
856 bond->dev->name, &target);
857 return -EINVAL;
858 }
859
860 ind = bond_get_targets_ip(targets, target);
861 if (ind == -1) {
862 pr_err("%s: unable to remove nonexistent ARP target %pI4.\n",
863 bond->dev->name, &target);
864 return -EINVAL;
865 }
866
867 if (ind == 0 && !targets[1] && bond->params.arp_interval)
868 pr_warn("%s: removing last arp target with arp_interval on\n",
869 bond->dev->name);
870
871 pr_info("%s: removing ARP target %pI4.\n", bond->dev->name,
872 &target);
873
874 /* not to race with bond_arp_rcv */
875 write_lock_bh(&bond->lock);
876
877 bond_for_each_slave(bond, slave, iter) {
878 targets_rx = slave->target_last_arp_rx;
879 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
880 targets_rx[i] = targets_rx[i+1];
881 targets_rx[i] = 0;
882 }
883 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
884 targets[i] = targets[i+1];
885 targets[i] = 0;
886
887 write_unlock_bh(&bond->lock);
888
889 return 0;
890}
891
4fb0ef58 892void bond_option_arp_ip_targets_clear(struct bonding *bond)
7f28fa10 893{
4fb0ef58 894 int i;
7f28fa10 895
896 /* not to race with bond_arp_rcv */
897 write_lock_bh(&bond->lock);
7f28fa10 898 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
899 _bond_options_arp_ip_target_set(bond, i, 0, 0);
4fb0ef58
NA		 900 write_unlock_bh(&bond->lock);
901}
7f28fa10 902
4fb0ef58
NA		 903int bond_option_arp_ip_targets_set(struct bonding *bond,
904 struct bond_opt_value *newval)
905{
906 int ret = -EPERM;
907 __be32 target;
908
909 if (newval->string) {
910 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
911 pr_err("%s: invalid ARP target %pI4 specified\n",
912 bond->dev->name, &target);
913 return ret;
914 }
915 if (newval->string[0] == '+')
916 ret = bond_option_arp_ip_target_add(bond, target);
917 else if (newval->string[0] == '-')
918 ret = bond_option_arp_ip_target_rem(bond, target);
919 else
920 pr_err("no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n",
921 bond->dev->name);
922 } else {
923 target = newval->value;
924 ret = bond_option_arp_ip_target_add(bond, target);
7f28fa10 925 }
926
7f28fa10 927 return ret;
928}
29c49482 929
16228881
NA		 930int bond_option_arp_validate_set(struct bonding *bond,
931 struct bond_opt_value *newval)
29c49482 932{
16228881
NA		 933 pr_info("%s: setting arp_validate to %s (%llu).\n",
934 bond->dev->name, newval->string, newval->value);
29c49482 935
936 if (bond->dev->flags & IFF_UP) {
16228881 937 if (!newval->value)
29c49482 938 bond->recv_probe = NULL;
939 else if (bond->params.arp_interval)
940 bond->recv_probe = bond_arp_rcv;
941 }
16228881 942 bond->params.arp_validate = newval->value;
29c49482 943
944 return 0;
945}
d5c84254 946
edf36b24
NA		 947int bond_option_arp_all_targets_set(struct bonding *bond,
948 struct bond_opt_value *newval)
d5c84254 949{
edf36b24
NA		 950 pr_info("%s: setting arp_all_targets to %s (%llu).\n",
951 bond->dev->name, newval->string, newval->value);
952 bond->params.arp_all_targets = newval->value;
d5c84254 953
954 return 0;
955}
0a98a0d1 956
180222f0 957int bond_option_primary_set(struct bonding *bond, struct bond_opt_value *newval)
0a98a0d1 958{
180222f0 959 char *p, *primary = newval->string;
0a98a0d1 960 struct list_head *iter;
961 struct slave *slave;
0a98a0d1 962
963 block_netpoll_tx();
964 read_lock(&bond->lock);
965 write_lock_bh(&bond->curr_slave_lock);
966
180222f0
NA		 967 p = strchr(primary, '\n');
968 if (p)
969 *p = '\0';
0a98a0d1 970 /* check to see if we are clearing primary */
971 if (!strlen(primary)) {
972 pr_info("%s: Setting primary slave to None.\n",
973 bond->dev->name);
974 bond->primary_slave = NULL;
975 memset(bond->params.primary, 0, sizeof(bond->params.primary));
976 bond_select_active_slave(bond);
977 goto out;
978 }
979
980 bond_for_each_slave(bond, slave, iter) {
981 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
982 pr_info("%s: Setting %s as primary slave.\n",
983 bond->dev->name, slave->dev->name);
984 bond->primary_slave = slave;
985 strcpy(bond->params.primary, slave->dev->name);
986 bond_select_active_slave(bond);
987 goto out;
988 }
989 }
990
991 strncpy(bond->params.primary, primary, IFNAMSIZ);
992 bond->params.primary[IFNAMSIZ - 1] = 0;
993
994 pr_info("%s: Recording %s as primary, but it has not been enslaved to %s yet.\n",
995 bond->dev->name, primary, bond->dev->name);
996
997out:
998 write_unlock_bh(&bond->curr_slave_lock);
999 read_unlock(&bond->lock);
1000 unblock_netpoll_tx();
1001
180222f0 1002 return 0;
0a98a0d1 1003}
8a41ae44 1004
388d3a6d
NA		 1005int bond_option_primary_reselect_set(struct bonding *bond,
1006 struct bond_opt_value *newval)
8a41ae44 1007{
388d3a6d
NA		 1008 pr_info("%s: setting primary_reselect to %s (%llu).\n",
1009 bond->dev->name, newval->string, newval->value);
1010 bond->params.primary_reselect = newval->value;
8a41ae44 1011
1012 block_netpoll_tx();
1013 write_lock_bh(&bond->curr_slave_lock);
1014 bond_select_active_slave(bond);
1015 write_unlock_bh(&bond->curr_slave_lock);
1016 unblock_netpoll_tx();
1017
1018 return 0;
1019}
89901972 1020
1df6b6aa
NA		 1021int bond_option_fail_over_mac_set(struct bonding *bond,
1022 struct bond_opt_value *newval)
89901972 1023{
1df6b6aa
NA		 1024 pr_info("%s: Setting fail_over_mac to %s (%llu).\n",
1025 bond->dev->name, newval->string, newval->value);
1026 bond->params.fail_over_mac = newval->value;
89901972 1027
1028 return 0;
1029}
f70161c6 1030
a4b32ce7
NA		 1031int bond_option_xmit_hash_policy_set(struct bonding *bond,
1032 struct bond_opt_value *newval)
f70161c6 1033{
a4b32ce7
NA		 1034 pr_info("%s: setting xmit hash policy to %s (%llu).\n",
1035 bond->dev->name, newval->string, newval->value);
1036 bond->params.xmit_policy = newval->value;
f70161c6 1037
1038 return 0;
1039}
d8838de7 1040
1041int bond_option_resend_igmp_set(struct bonding *bond, int resend_igmp)
1042{
1043 if (resend_igmp < 0 || resend_igmp > 255) {
1044 pr_err("%s: Invalid resend_igmp value %d not in range 0-255; rejected.\n",
1045 bond->dev->name, resend_igmp);
1046 return -EINVAL;
1047 }
1048
1049 bond->params.resend_igmp = resend_igmp;
1050 pr_info("%s: Setting resend_igmp to %d.\n",
1051 bond->dev->name, resend_igmp);
1052
1053 return 0;
1054}
2c9839c1 1055
ef56becb
NA		 1056int bond_option_num_peer_notif_set(struct bonding *bond,
1057 struct bond_opt_value *newval)
2c9839c1 1058{
ef56becb
NA		 1059 bond->params.num_peer_notif = newval->value;
1060
2c9839c1 1061 return 0;
1062}
1cc0b1e3 1063
1064int bond_option_all_slaves_active_set(struct bonding *bond,
3df01162 1065 struct bond_opt_value *newval)
1cc0b1e3 1066{
1067 struct list_head *iter;
1068 struct slave *slave;
1069
3df01162 1070 if (newval->value == bond->params.all_slaves_active)
1cc0b1e3 1071 return 0;
3df01162 1072 bond->params.all_slaves_active = newval->value;
1cc0b1e3 1073 bond_for_each_slave(bond, slave, iter) {
1074 if (!bond_is_active_slave(slave)) {
3df01162 1075 if (newval->value)
1cc0b1e3 1076 slave->inactive = 0;
1077 else
1078 slave->inactive = 1;
1079 }
1080 }
1081
1082 return 0;
1083}
7d101008 1084
633ddc9e
NA		 1085int bond_option_min_links_set(struct bonding *bond,
1086 struct bond_opt_value *newval)
7d101008 1087{
633ddc9e
NA		 1088 pr_info("%s: Setting min links value to %llu\n",
1089 bond->dev->name, newval->value);
1090 bond->params.min_links = newval->value;
7d101008 1091
1092 return 0;
1093}
8d836d09 1094
1095int bond_option_lp_interval_set(struct bonding *bond, int lp_interval)
1096{
1097 if (lp_interval <= 0) {
1098 pr_err("%s: lp_interval must be between 1 and %d\n",
1099 bond->dev->name, INT_MAX);
1100 return -EINVAL;
1101 }
1102
1103 bond->params.lp_interval = lp_interval;
1104
1105 return 0;
1106}
c13ab3ff 1107
aa59d851 1108int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval)
c13ab3ff 1109{
aa59d851
NA		 1110 bond->params.packets_per_slave = newval->value;
1111 if (newval->value > 0) {
809fa972 1112 bond->params.reciprocal_packets_per_slave =
aa59d851 1113 reciprocal_value(newval->value);
809fa972
HFS		 1114 } else {
1115 /* reciprocal_packets_per_slave is unused if
1116 * packets_per_slave is 0 or 1, just initialize it
1117 */
1118 bond->params.reciprocal_packets_per_slave =
1119 (struct reciprocal_value) { 0 };
1120 }
c13ab3ff 1121
1122 return 0;
1123}
998e40bb 1124
d3131de7
NA		 1125int bond_option_lacp_rate_set(struct bonding *bond,
1126 struct bond_opt_value *newval)
998e40bb 1127{
d3131de7
NA		 1128 pr_info("%s: Setting LACP rate to %s (%llu).\n",
1129 bond->dev->name, newval->string, newval->value);
1130 bond->params.lacp_fast = newval->value;
3243c47b 1131 bond_3ad_update_lacp_rate(bond);
998e40bb 1132
1133 return 0;
1134}
ec029fac 1135
9e5f5eeb
NA		 1136int bond_option_ad_select_set(struct bonding *bond,
1137 struct bond_opt_value *newval)
ec029fac 1138{
9e5f5eeb
NA		 1139 pr_info("%s: Setting ad_select to %s (%llu).\n",
1140 bond->dev->name, newval->string, newval->value);
1141 bond->params.ad_select = newval->value;
ec029fac 1142
1143 return 0;
1144}
24089ba1
NA		 1145
1146int bond_option_queue_id_set(struct bonding *bond,
1147 struct bond_opt_value *newval)
1148{
1149 struct slave *slave, *update_slave;
1150 struct net_device *sdev;
1151 struct list_head *iter;
1152 char *delim;
1153 int ret = 0;
1154 u16 qid;
1155
1156 /* delim will point to queue id if successful */
1157 delim = strchr(newval->string, ':');
1158 if (!delim)
1159 goto err_no_cmd;
1160
1161 /* Terminate string that points to device name and bump it
1162 * up one, so we can read the queue id there.
1163 */
1164 *delim = '\0';
1165 if (sscanf(++delim, "%hd\n", &qid) != 1)
1166 goto err_no_cmd;
1167
1168 /* Check buffer length, valid ifname and queue id */
1169 if (strlen(newval->string) > IFNAMSIZ ||
1170 !dev_valid_name(newval->string) ||
1171 qid > bond->dev->real_num_tx_queues)
1172 goto err_no_cmd;
1173
1174 /* Get the pointer to that interface if it exists */
1175 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1176 if (!sdev)
1177 goto err_no_cmd;
1178
1179 /* Search for thes slave and check for duplicate qids */
1180 update_slave = NULL;
1181 bond_for_each_slave(bond, slave, iter) {
1182 if (sdev == slave->dev)
1183 /* We don't need to check the matching
1184 * slave for dups, since we're overwriting it
1185 */
1186 update_slave = slave;
1187 else if (qid && qid == slave->queue_id) {
1188 goto err_no_cmd;
1189 }
1190 }
1191
1192 if (!update_slave)
1193 goto err_no_cmd;
1194
1195 /* Actually set the qids for the slave */
1196 update_slave->queue_id = qid;
1197
1198out:
1199 return ret;
1200
1201err_no_cmd:
1202 pr_info("invalid input for queue_id set for %s.\n",
1203 bond->dev->name);
1204 ret = -EPERM;
1205 goto out;
1206
1207}
Linux kernel - Deliverables
This page took 0.192309 seconds and 5 git commands to generate.