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