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