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