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