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[deliverable/linux.git] / drivers / net / bonding / bond_options.c
1 /*
2 * drivers/net/bond/bond_options.c - bonding options
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
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 #include <linux/errno.h>
13 #include <linux/if.h>
14 #include <linux/netdevice.h>
15 #include <linux/spinlock.h>
16 #include <linux/rcupdate.h>
17 #include <linux/ctype.h>
18 #include <linux/inet.h>
19 #include <net/bonding.h>
20
21 static int bond_option_active_slave_set(struct bonding *bond,
22 const struct bond_opt_value *newval);
23 static int bond_option_miimon_set(struct bonding *bond,
24 const struct bond_opt_value *newval);
25 static int bond_option_updelay_set(struct bonding *bond,
26 const struct bond_opt_value *newval);
27 static int bond_option_downdelay_set(struct bonding *bond,
28 const struct bond_opt_value *newval);
29 static int bond_option_use_carrier_set(struct bonding *bond,
30 const struct bond_opt_value *newval);
31 static int bond_option_arp_interval_set(struct bonding *bond,
32 const struct bond_opt_value *newval);
33 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
34 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
35 static int bond_option_arp_ip_targets_set(struct bonding *bond,
36 const struct bond_opt_value *newval);
37 static int bond_option_arp_validate_set(struct bonding *bond,
38 const struct bond_opt_value *newval);
39 static int bond_option_arp_all_targets_set(struct bonding *bond,
40 const struct bond_opt_value *newval);
41 static int bond_option_primary_set(struct bonding *bond,
42 const struct bond_opt_value *newval);
43 static int bond_option_primary_reselect_set(struct bonding *bond,
44 const struct bond_opt_value *newval);
45 static int bond_option_fail_over_mac_set(struct bonding *bond,
46 const struct bond_opt_value *newval);
47 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
48 const struct bond_opt_value *newval);
49 static int bond_option_resend_igmp_set(struct bonding *bond,
50 const struct bond_opt_value *newval);
51 static int bond_option_num_peer_notif_set(struct bonding *bond,
52 const struct bond_opt_value *newval);
53 static int bond_option_all_slaves_active_set(struct bonding *bond,
54 const struct bond_opt_value *newval);
55 static int bond_option_min_links_set(struct bonding *bond,
56 const struct bond_opt_value *newval);
57 static int bond_option_lp_interval_set(struct bonding *bond,
58 const struct bond_opt_value *newval);
59 static int bond_option_pps_set(struct bonding *bond,
60 const struct bond_opt_value *newval);
61 static int bond_option_lacp_rate_set(struct bonding *bond,
62 const struct bond_opt_value *newval);
63 static int bond_option_ad_select_set(struct bonding *bond,
64 const struct bond_opt_value *newval);
65 static int bond_option_queue_id_set(struct bonding *bond,
66 const struct bond_opt_value *newval);
67 static int bond_option_mode_set(struct bonding *bond,
68 const struct bond_opt_value *newval);
69 static int bond_option_slaves_set(struct bonding *bond,
70 const struct bond_opt_value *newval);
71 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
72 const struct bond_opt_value *newval);
73 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
74 const struct bond_opt_value *newval);
75 static int bond_option_ad_actor_system_set(struct bonding *bond,
76 const struct bond_opt_value *newval);
77 static int bond_option_ad_user_port_key_set(struct bonding *bond,
78 const struct bond_opt_value *newval);
79
80
81 static const struct bond_opt_value bond_mode_tbl[] = {
82 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
83 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
84 { "balance-xor", BOND_MODE_XOR, 0},
85 { "broadcast", BOND_MODE_BROADCAST, 0},
86 { "802.3ad", BOND_MODE_8023AD, 0},
87 { "balance-tlb", BOND_MODE_TLB, 0},
88 { "balance-alb", BOND_MODE_ALB, 0},
89 { NULL, -1, 0},
90 };
91
92 static const struct bond_opt_value bond_pps_tbl[] = {
93 { "default", 1, BOND_VALFLAG_DEFAULT},
94 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
95 { NULL, -1, 0},
96 };
97
98 static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
99 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
100 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
101 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
102 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
103 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
104 { NULL, -1, 0},
105 };
106
107 static const struct bond_opt_value bond_arp_validate_tbl[] = {
108 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
109 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
110 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
111 { "all", BOND_ARP_VALIDATE_ALL, 0},
112 { "filter", BOND_ARP_FILTER, 0},
113 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
114 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
115 { NULL, -1, 0},
116 };
117
118 static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
119 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
120 { "all", BOND_ARP_TARGETS_ALL, 0},
121 { NULL, -1, 0},
122 };
123
124 static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
125 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
126 { "active", BOND_FOM_ACTIVE, 0},
127 { "follow", BOND_FOM_FOLLOW, 0},
128 { NULL, -1, 0},
129 };
130
131 static const struct bond_opt_value bond_intmax_tbl[] = {
132 { "off", 0, BOND_VALFLAG_DEFAULT},
133 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
134 { NULL, -1, 0}
135 };
136
137 static const struct bond_opt_value bond_lacp_rate_tbl[] = {
138 { "slow", AD_LACP_SLOW, 0},
139 { "fast", AD_LACP_FAST, 0},
140 { NULL, -1, 0},
141 };
142
143 static const struct bond_opt_value bond_ad_select_tbl[] = {
144 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
145 { "bandwidth", BOND_AD_BANDWIDTH, 0},
146 { "count", BOND_AD_COUNT, 0},
147 { NULL, -1, 0},
148 };
149
150 static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
151 { "off", 0, 0},
152 { "maxval", 255, BOND_VALFLAG_MAX},
153 { "default", 1, BOND_VALFLAG_DEFAULT},
154 { NULL, -1, 0}
155 };
156
157 static const struct bond_opt_value bond_primary_reselect_tbl[] = {
158 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
159 { "better", BOND_PRI_RESELECT_BETTER, 0},
160 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
161 { NULL, -1},
162 };
163
164 static const struct bond_opt_value bond_use_carrier_tbl[] = {
165 { "off", 0, 0},
166 { "on", 1, BOND_VALFLAG_DEFAULT},
167 { NULL, -1, 0}
168 };
169
170 static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
171 { "off", 0, BOND_VALFLAG_DEFAULT},
172 { "on", 1, 0},
173 { NULL, -1, 0}
174 };
175
176 static const struct bond_opt_value bond_resend_igmp_tbl[] = {
177 { "off", 0, 0},
178 { "maxval", 255, BOND_VALFLAG_MAX},
179 { "default", 1, BOND_VALFLAG_DEFAULT},
180 { NULL, -1, 0}
181 };
182
183 static const struct bond_opt_value bond_lp_interval_tbl[] = {
184 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
185 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
186 { NULL, -1, 0},
187 };
188
189 static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
190 { "off", 0, 0},
191 { "on", 1, BOND_VALFLAG_DEFAULT},
192 { NULL, -1, 0}
193 };
194
195 static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
196 { "minval", 1, BOND_VALFLAG_MIN},
197 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
198 { NULL, -1, 0},
199 };
200
201 static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
202 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
203 { "maxval", 1023, BOND_VALFLAG_MAX},
204 { NULL, -1, 0},
205 };
206
207 static const struct bond_option bond_opts[BOND_OPT_LAST] = {
208 [BOND_OPT_MODE] = {
209 .id = BOND_OPT_MODE,
210 .name = "mode",
211 .desc = "bond device mode",
212 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
213 .values = bond_mode_tbl,
214 .set = bond_option_mode_set
215 },
216 [BOND_OPT_PACKETS_PER_SLAVE] = {
217 .id = BOND_OPT_PACKETS_PER_SLAVE,
218 .name = "packets_per_slave",
219 .desc = "Packets to send per slave in RR mode",
220 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
221 .values = bond_pps_tbl,
222 .set = bond_option_pps_set
223 },
224 [BOND_OPT_XMIT_HASH] = {
225 .id = BOND_OPT_XMIT_HASH,
226 .name = "xmit_hash_policy",
227 .desc = "balance-xor, 802.3ad, and tlb hashing method",
228 .values = bond_xmit_hashtype_tbl,
229 .set = bond_option_xmit_hash_policy_set
230 },
231 [BOND_OPT_ARP_VALIDATE] = {
232 .id = BOND_OPT_ARP_VALIDATE,
233 .name = "arp_validate",
234 .desc = "validate src/dst of ARP probes",
235 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
236 BIT(BOND_MODE_ALB),
237 .values = bond_arp_validate_tbl,
238 .set = bond_option_arp_validate_set
239 },
240 [BOND_OPT_ARP_ALL_TARGETS] = {
241 .id = BOND_OPT_ARP_ALL_TARGETS,
242 .name = "arp_all_targets",
243 .desc = "fail on any/all arp targets timeout",
244 .values = bond_arp_all_targets_tbl,
245 .set = bond_option_arp_all_targets_set
246 },
247 [BOND_OPT_FAIL_OVER_MAC] = {
248 .id = BOND_OPT_FAIL_OVER_MAC,
249 .name = "fail_over_mac",
250 .desc = "For active-backup, do not set all slaves to the same MAC",
251 .flags = BOND_OPTFLAG_NOSLAVES,
252 .values = bond_fail_over_mac_tbl,
253 .set = bond_option_fail_over_mac_set
254 },
255 [BOND_OPT_ARP_INTERVAL] = {
256 .id = BOND_OPT_ARP_INTERVAL,
257 .name = "arp_interval",
258 .desc = "arp interval in milliseconds",
259 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
260 BIT(BOND_MODE_ALB),
261 .values = bond_intmax_tbl,
262 .set = bond_option_arp_interval_set
263 },
264 [BOND_OPT_ARP_TARGETS] = {
265 .id = BOND_OPT_ARP_TARGETS,
266 .name = "arp_ip_target",
267 .desc = "arp targets in n.n.n.n form",
268 .flags = BOND_OPTFLAG_RAWVAL,
269 .set = bond_option_arp_ip_targets_set
270 },
271 [BOND_OPT_DOWNDELAY] = {
272 .id = BOND_OPT_DOWNDELAY,
273 .name = "downdelay",
274 .desc = "Delay before considering link down, in milliseconds",
275 .values = bond_intmax_tbl,
276 .set = bond_option_downdelay_set
277 },
278 [BOND_OPT_UPDELAY] = {
279 .id = BOND_OPT_UPDELAY,
280 .name = "updelay",
281 .desc = "Delay before considering link up, in milliseconds",
282 .values = bond_intmax_tbl,
283 .set = bond_option_updelay_set
284 },
285 [BOND_OPT_LACP_RATE] = {
286 .id = BOND_OPT_LACP_RATE,
287 .name = "lacp_rate",
288 .desc = "LACPDU tx rate to request from 802.3ad partner",
289 .flags = BOND_OPTFLAG_IFDOWN,
290 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
291 .values = bond_lacp_rate_tbl,
292 .set = bond_option_lacp_rate_set
293 },
294 [BOND_OPT_MINLINKS] = {
295 .id = BOND_OPT_MINLINKS,
296 .name = "min_links",
297 .desc = "Minimum number of available links before turning on carrier",
298 .values = bond_intmax_tbl,
299 .set = bond_option_min_links_set
300 },
301 [BOND_OPT_AD_SELECT] = {
302 .id = BOND_OPT_AD_SELECT,
303 .name = "ad_select",
304 .desc = "803.ad aggregation selection logic",
305 .flags = BOND_OPTFLAG_IFDOWN,
306 .values = bond_ad_select_tbl,
307 .set = bond_option_ad_select_set
308 },
309 [BOND_OPT_NUM_PEER_NOTIF] = {
310 .id = BOND_OPT_NUM_PEER_NOTIF,
311 .name = "num_unsol_na",
312 .desc = "Number of peer notifications to send on failover event",
313 .values = bond_num_peer_notif_tbl,
314 .set = bond_option_num_peer_notif_set
315 },
316 [BOND_OPT_MIIMON] = {
317 .id = BOND_OPT_MIIMON,
318 .name = "miimon",
319 .desc = "Link check interval in milliseconds",
320 .values = bond_intmax_tbl,
321 .set = bond_option_miimon_set
322 },
323 [BOND_OPT_PRIMARY] = {
324 .id = BOND_OPT_PRIMARY,
325 .name = "primary",
326 .desc = "Primary network device to use",
327 .flags = BOND_OPTFLAG_RAWVAL,
328 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
329 BIT(BOND_MODE_TLB) |
330 BIT(BOND_MODE_ALB)),
331 .set = bond_option_primary_set
332 },
333 [BOND_OPT_PRIMARY_RESELECT] = {
334 .id = BOND_OPT_PRIMARY_RESELECT,
335 .name = "primary_reselect",
336 .desc = "Reselect primary slave once it comes up",
337 .values = bond_primary_reselect_tbl,
338 .set = bond_option_primary_reselect_set
339 },
340 [BOND_OPT_USE_CARRIER] = {
341 .id = BOND_OPT_USE_CARRIER,
342 .name = "use_carrier",
343 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
344 .values = bond_use_carrier_tbl,
345 .set = bond_option_use_carrier_set
346 },
347 [BOND_OPT_ACTIVE_SLAVE] = {
348 .id = BOND_OPT_ACTIVE_SLAVE,
349 .name = "active_slave",
350 .desc = "Currently active slave",
351 .flags = BOND_OPTFLAG_RAWVAL,
352 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
353 BIT(BOND_MODE_TLB) |
354 BIT(BOND_MODE_ALB)),
355 .set = bond_option_active_slave_set
356 },
357 [BOND_OPT_QUEUE_ID] = {
358 .id = BOND_OPT_QUEUE_ID,
359 .name = "queue_id",
360 .desc = "Set queue id of a slave",
361 .flags = BOND_OPTFLAG_RAWVAL,
362 .set = bond_option_queue_id_set
363 },
364 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
365 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
366 .name = "all_slaves_active",
367 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
368 .values = bond_all_slaves_active_tbl,
369 .set = bond_option_all_slaves_active_set
370 },
371 [BOND_OPT_RESEND_IGMP] = {
372 .id = BOND_OPT_RESEND_IGMP,
373 .name = "resend_igmp",
374 .desc = "Number of IGMP membership reports to send on link failure",
375 .values = bond_resend_igmp_tbl,
376 .set = bond_option_resend_igmp_set
377 },
378 [BOND_OPT_LP_INTERVAL] = {
379 .id = BOND_OPT_LP_INTERVAL,
380 .name = "lp_interval",
381 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
382 .values = bond_lp_interval_tbl,
383 .set = bond_option_lp_interval_set
384 },
385 [BOND_OPT_SLAVES] = {
386 .id = BOND_OPT_SLAVES,
387 .name = "slaves",
388 .desc = "Slave membership management",
389 .flags = BOND_OPTFLAG_RAWVAL,
390 .set = bond_option_slaves_set
391 },
392 [BOND_OPT_TLB_DYNAMIC_LB] = {
393 .id = BOND_OPT_TLB_DYNAMIC_LB,
394 .name = "tlb_dynamic_lb",
395 .desc = "Enable dynamic flow shuffling",
396 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB)),
397 .values = bond_tlb_dynamic_lb_tbl,
398 .flags = BOND_OPTFLAG_IFDOWN,
399 .set = bond_option_tlb_dynamic_lb_set,
400 },
401 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
402 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
403 .name = "ad_actor_sys_prio",
404 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
405 .flags = BOND_OPTFLAG_IFDOWN,
406 .values = bond_ad_actor_sys_prio_tbl,
407 .set = bond_option_ad_actor_sys_prio_set,
408 },
409 [BOND_OPT_AD_ACTOR_SYSTEM] = {
410 .id = BOND_OPT_AD_ACTOR_SYSTEM,
411 .name = "ad_actor_system",
412 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
413 .flags = BOND_OPTFLAG_RAWVAL | BOND_OPTFLAG_IFDOWN,
414 .set = bond_option_ad_actor_system_set,
415 },
416 [BOND_OPT_AD_USER_PORT_KEY] = {
417 .id = BOND_OPT_AD_USER_PORT_KEY,
418 .name = "ad_user_port_key",
419 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
420 .flags = BOND_OPTFLAG_IFDOWN,
421 .values = bond_ad_user_port_key_tbl,
422 .set = bond_option_ad_user_port_key_set,
423 },
424 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
425 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
426 .name = "num_grat_arp",
427 .desc = "Number of peer notifications to send on failover event",
428 .values = bond_num_peer_notif_tbl,
429 .set = bond_option_num_peer_notif_set
430 }
431 };
432
433 /* Searches for an option by name */
434 const struct bond_option *bond_opt_get_by_name(const char *name)
435 {
436 const struct bond_option *opt;
437 int option;
438
439 for (option = 0; option < BOND_OPT_LAST; option++) {
440 opt = bond_opt_get(option);
441 if (opt && !strcmp(opt->name, name))
442 return opt;
443 }
444
445 return NULL;
446 }
447
448 /* Searches for a value in opt's values[] table */
449 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
450 {
451 const struct bond_option *opt;
452 int i;
453
454 opt = bond_opt_get(option);
455 if (WARN_ON(!opt))
456 return NULL;
457 for (i = 0; opt->values && opt->values[i].string; i++)
458 if (opt->values[i].value == val)
459 return &opt->values[i];
460
461 return NULL;
462 }
463
464 /* Searches for a value in opt's values[] table which matches the flagmask */
465 static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
466 u32 flagmask)
467 {
468 int i;
469
470 for (i = 0; opt->values && opt->values[i].string; i++)
471 if (opt->values[i].flags & flagmask)
472 return &opt->values[i];
473
474 return NULL;
475 }
476
477 /* If maxval is missing then there's no range to check. In case minval is
478 * missing then it's considered to be 0.
479 */
480 static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
481 {
482 const struct bond_opt_value *minval, *maxval;
483
484 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
485 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
486 if (!maxval || (minval && val < minval->value) || val > maxval->value)
487 return false;
488
489 return true;
490 }
491
492 /**
493 * bond_opt_parse - parse option value
494 * @opt: the option to parse against
495 * @val: value to parse
496 *
497 * This function tries to extract the value from @val and check if it's
498 * a possible match for the option and returns NULL if a match isn't found,
499 * or the struct_opt_value that matched. It also strips the new line from
500 * @val->string if it's present.
501 */
502 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
503 struct bond_opt_value *val)
504 {
505 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
506 const struct bond_opt_value *tbl;
507 const struct bond_opt_value *ret = NULL;
508 bool checkval;
509 int i, rv;
510
511 /* No parsing if the option wants a raw val */
512 if (opt->flags & BOND_OPTFLAG_RAWVAL)
513 return val;
514
515 tbl = opt->values;
516 if (!tbl)
517 goto out;
518
519 /* ULLONG_MAX is used to bypass string processing */
520 checkval = val->value != ULLONG_MAX;
521 if (!checkval) {
522 if (!val->string)
523 goto out;
524 p = strchr(val->string, '\n');
525 if (p)
526 *p = '\0';
527 for (p = val->string; *p; p++)
528 if (!(isdigit(*p) || isspace(*p)))
529 break;
530 /* The following code extracts the string to match or the value
531 * and sets checkval appropriately
532 */
533 if (*p) {
534 rv = sscanf(val->string, "%32s", valstr);
535 } else {
536 rv = sscanf(val->string, "%llu", &val->value);
537 checkval = true;
538 }
539 if (!rv)
540 goto out;
541 }
542
543 for (i = 0; tbl[i].string; i++) {
544 /* Check for exact match */
545 if (checkval) {
546 if (val->value == tbl[i].value)
547 ret = &tbl[i];
548 } else {
549 if (!strcmp(valstr, "default") &&
550 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
551 ret = &tbl[i];
552
553 if (!strcmp(valstr, tbl[i].string))
554 ret = &tbl[i];
555 }
556 /* Found an exact match */
557 if (ret)
558 goto out;
559 }
560 /* Possible range match */
561 if (checkval && bond_opt_check_range(opt, val->value))
562 ret = val;
563 out:
564 return ret;
565 }
566
567 /* Check opt's dependencies against bond mode and currently set options */
568 static int bond_opt_check_deps(struct bonding *bond,
569 const struct bond_option *opt)
570 {
571 struct bond_params *params = &bond->params;
572
573 if (test_bit(params->mode, &opt->unsuppmodes))
574 return -EACCES;
575 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
576 return -ENOTEMPTY;
577 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
578 return -EBUSY;
579
580 return 0;
581 }
582
583 static void bond_opt_dep_print(struct bonding *bond,
584 const struct bond_option *opt)
585 {
586 const struct bond_opt_value *modeval;
587 struct bond_params *params;
588
589 params = &bond->params;
590 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
591 if (test_bit(params->mode, &opt->unsuppmodes))
592 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
593 opt->name, modeval->string, modeval->value);
594 }
595
596 static void bond_opt_error_interpret(struct bonding *bond,
597 const struct bond_option *opt,
598 int error, const struct bond_opt_value *val)
599 {
600 const struct bond_opt_value *minval, *maxval;
601 char *p;
602
603 switch (error) {
604 case -EINVAL:
605 if (val) {
606 if (val->string) {
607 /* sometimes RAWVAL opts may have new lines */
608 p = strchr(val->string, '\n');
609 if (p)
610 *p = '\0';
611 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
612 opt->name, val->string);
613 } else {
614 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
615 opt->name, val->value);
616 }
617 }
618 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
619 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
620 if (!maxval)
621 break;
622 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
623 opt->name, minval ? minval->value : 0, maxval->value);
624 break;
625 case -EACCES:
626 bond_opt_dep_print(bond, opt);
627 break;
628 case -ENOTEMPTY:
629 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
630 opt->name);
631 break;
632 case -EBUSY:
633 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
634 opt->name);
635 break;
636 default:
637 break;
638 }
639 }
640
641 /**
642 * __bond_opt_set - set a bonding option
643 * @bond: target bond device
644 * @option: option to set
645 * @val: value to set it to
646 *
647 * This function is used to change the bond's option value, it can be
648 * used for both enabling/changing an option and for disabling it. RTNL lock
649 * must be obtained before calling this function.
650 */
651 int __bond_opt_set(struct bonding *bond,
652 unsigned int option, struct bond_opt_value *val)
653 {
654 const struct bond_opt_value *retval = NULL;
655 const struct bond_option *opt;
656 int ret = -ENOENT;
657
658 ASSERT_RTNL();
659
660 opt = bond_opt_get(option);
661 if (WARN_ON(!val) || WARN_ON(!opt))
662 goto out;
663 ret = bond_opt_check_deps(bond, opt);
664 if (ret)
665 goto out;
666 retval = bond_opt_parse(opt, val);
667 if (!retval) {
668 ret = -EINVAL;
669 goto out;
670 }
671 ret = opt->set(bond, retval);
672 out:
673 if (ret)
674 bond_opt_error_interpret(bond, opt, ret, val);
675 else if (bond->dev->reg_state == NETREG_REGISTERED)
676 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
677
678 return ret;
679 }
680
681 /**
682 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
683 * @bond: target bond device
684 * @option: option to set
685 * @buf: value to set it to
686 *
687 * This function tries to acquire RTNL without blocking and if successful
688 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
689 */
690 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
691 {
692 struct bond_opt_value optval;
693 int ret;
694
695 if (!rtnl_trylock())
696 return restart_syscall();
697 bond_opt_initstr(&optval, buf);
698 ret = __bond_opt_set(bond, option, &optval);
699 rtnl_unlock();
700
701 return ret;
702 }
703
704 /**
705 * bond_opt_get - get a pointer to an option
706 * @option: option for which to return a pointer
707 *
708 * This function checks if option is valid and if so returns a pointer
709 * to its entry in the bond_opts[] option array.
710 */
711 const struct bond_option *bond_opt_get(unsigned int option)
712 {
713 if (!BOND_OPT_VALID(option))
714 return NULL;
715
716 return &bond_opts[option];
717 }
718
719 static int bond_option_mode_set(struct bonding *bond,
720 const struct bond_opt_value *newval)
721 {
722 if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) {
723 netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
724 newval->string);
725 /* disable arp monitoring */
726 bond->params.arp_interval = 0;
727 /* set miimon to default value */
728 bond->params.miimon = BOND_DEFAULT_MIIMON;
729 netdev_info(bond->dev, "Setting MII monitoring interval to %d\n",
730 bond->params.miimon);
731 }
732
733 /* don't cache arp_validate between modes */
734 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
735 bond->params.mode = newval->value;
736
737 return 0;
738 }
739
740 static int bond_option_active_slave_set(struct bonding *bond,
741 const struct bond_opt_value *newval)
742 {
743 char ifname[IFNAMSIZ] = { 0, };
744 struct net_device *slave_dev;
745 int ret = 0;
746
747 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
748 if (!strlen(ifname) || newval->string[0] == '\n') {
749 slave_dev = NULL;
750 } else {
751 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
752 if (!slave_dev)
753 return -ENODEV;
754 }
755
756 if (slave_dev) {
757 if (!netif_is_bond_slave(slave_dev)) {
758 netdev_err(bond->dev, "Device %s is not bonding slave\n",
759 slave_dev->name);
760 return -EINVAL;
761 }
762
763 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
764 netdev_err(bond->dev, "Device %s is not our slave\n",
765 slave_dev->name);
766 return -EINVAL;
767 }
768 }
769
770 block_netpoll_tx();
771 /* check to see if we are clearing active */
772 if (!slave_dev) {
773 netdev_info(bond->dev, "Clearing current active slave\n");
774 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
775 bond_select_active_slave(bond);
776 } else {
777 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
778 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
779
780 BUG_ON(!new_active);
781
782 if (new_active == old_active) {
783 /* do nothing */
784 netdev_info(bond->dev, "%s is already the current active slave\n",
785 new_active->dev->name);
786 } else {
787 if (old_active && (new_active->link == BOND_LINK_UP) &&
788 bond_slave_is_up(new_active)) {
789 netdev_info(bond->dev, "Setting %s as active slave\n",
790 new_active->dev->name);
791 bond_change_active_slave(bond, new_active);
792 } else {
793 netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n",
794 new_active->dev->name,
795 new_active->dev->name);
796 ret = -EINVAL;
797 }
798 }
799 }
800 unblock_netpoll_tx();
801
802 return ret;
803 }
804
805 /* There are two tricky bits here. First, if MII monitoring is activated, then
806 * we must disable ARP monitoring. Second, if the timer isn't running, we must
807 * start it.
808 */
809 static int bond_option_miimon_set(struct bonding *bond,
810 const struct bond_opt_value *newval)
811 {
812 netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n",
813 newval->value);
814 bond->params.miimon = newval->value;
815 if (bond->params.updelay)
816 netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
817 bond->params.updelay * bond->params.miimon);
818 if (bond->params.downdelay)
819 netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
820 bond->params.downdelay * bond->params.miimon);
821 if (newval->value && bond->params.arp_interval) {
822 netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
823 bond->params.arp_interval = 0;
824 if (bond->params.arp_validate)
825 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
826 }
827 if (bond->dev->flags & IFF_UP) {
828 /* If the interface is up, we may need to fire off
829 * the MII timer. If the interface is down, the
830 * timer will get fired off when the open function
831 * is called.
832 */
833 if (!newval->value) {
834 cancel_delayed_work_sync(&bond->mii_work);
835 } else {
836 cancel_delayed_work_sync(&bond->arp_work);
837 queue_delayed_work(bond->wq, &bond->mii_work, 0);
838 }
839 }
840
841 return 0;
842 }
843
844 /* Set up and down delays. These must be multiples of the
845 * MII monitoring value, and are stored internally as the multiplier.
846 * Thus, we must translate to MS for the real world.
847 */
848 static int bond_option_updelay_set(struct bonding *bond,
849 const struct bond_opt_value *newval)
850 {
851 int value = newval->value;
852
853 if (!bond->params.miimon) {
854 netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n");
855 return -EPERM;
856 }
857 if ((value % bond->params.miimon) != 0) {
858 netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
859 value, bond->params.miimon,
860 (value / bond->params.miimon) *
861 bond->params.miimon);
862 }
863 bond->params.updelay = value / bond->params.miimon;
864 netdev_info(bond->dev, "Setting up delay to %d\n",
865 bond->params.updelay * bond->params.miimon);
866
867 return 0;
868 }
869
870 static int bond_option_downdelay_set(struct bonding *bond,
871 const struct bond_opt_value *newval)
872 {
873 int value = newval->value;
874
875 if (!bond->params.miimon) {
876 netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n");
877 return -EPERM;
878 }
879 if ((value % bond->params.miimon) != 0) {
880 netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
881 value, bond->params.miimon,
882 (value / bond->params.miimon) *
883 bond->params.miimon);
884 }
885 bond->params.downdelay = value / bond->params.miimon;
886 netdev_info(bond->dev, "Setting down delay to %d\n",
887 bond->params.downdelay * bond->params.miimon);
888
889 return 0;
890 }
891
892 static int bond_option_use_carrier_set(struct bonding *bond,
893 const struct bond_opt_value *newval)
894 {
895 netdev_info(bond->dev, "Setting use_carrier to %llu\n",
896 newval->value);
897 bond->params.use_carrier = newval->value;
898
899 return 0;
900 }
901
902 /* There are two tricky bits here. First, if ARP monitoring is activated, then
903 * we must disable MII monitoring. Second, if the ARP timer isn't running,
904 * we must start it.
905 */
906 static int bond_option_arp_interval_set(struct bonding *bond,
907 const struct bond_opt_value *newval)
908 {
909 netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n",
910 newval->value);
911 bond->params.arp_interval = newval->value;
912 if (newval->value) {
913 if (bond->params.miimon) {
914 netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
915 bond->params.miimon = 0;
916 }
917 if (!bond->params.arp_targets[0])
918 netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
919 }
920 if (bond->dev->flags & IFF_UP) {
921 /* If the interface is up, we may need to fire off
922 * the ARP timer. If the interface is down, the
923 * timer will get fired off when the open function
924 * is called.
925 */
926 if (!newval->value) {
927 if (bond->params.arp_validate)
928 bond->recv_probe = NULL;
929 cancel_delayed_work_sync(&bond->arp_work);
930 } else {
931 /* arp_validate can be set only in active-backup mode */
932 bond->recv_probe = bond_arp_rcv;
933 cancel_delayed_work_sync(&bond->mii_work);
934 queue_delayed_work(bond->wq, &bond->arp_work, 0);
935 }
936 }
937
938 return 0;
939 }
940
941 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
942 __be32 target,
943 unsigned long last_rx)
944 {
945 __be32 *targets = bond->params.arp_targets;
946 struct list_head *iter;
947 struct slave *slave;
948
949 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
950 bond_for_each_slave(bond, slave, iter)
951 slave->target_last_arp_rx[slot] = last_rx;
952 targets[slot] = target;
953 }
954 }
955
956 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
957 {
958 __be32 *targets = bond->params.arp_targets;
959 int ind;
960
961 if (!bond_is_ip_target_ok(target)) {
962 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
963 &target);
964 return -EINVAL;
965 }
966
967 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
968 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
969 &target);
970 return -EINVAL;
971 }
972
973 ind = bond_get_targets_ip(targets, 0); /* first free slot */
974 if (ind == -1) {
975 netdev_err(bond->dev, "ARP target table is full!\n");
976 return -EINVAL;
977 }
978
979 netdev_info(bond->dev, "Adding ARP target %pI4\n", &target);
980
981 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
982
983 return 0;
984 }
985
986 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
987 {
988 return _bond_option_arp_ip_target_add(bond, target);
989 }
990
991 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
992 {
993 __be32 *targets = bond->params.arp_targets;
994 struct list_head *iter;
995 struct slave *slave;
996 unsigned long *targets_rx;
997 int ind, i;
998
999 if (!bond_is_ip_target_ok(target)) {
1000 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1001 &target);
1002 return -EINVAL;
1003 }
1004
1005 ind = bond_get_targets_ip(targets, target);
1006 if (ind == -1) {
1007 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1008 &target);
1009 return -EINVAL;
1010 }
1011
1012 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1013 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1014
1015 netdev_info(bond->dev, "Removing ARP target %pI4\n", &target);
1016
1017 bond_for_each_slave(bond, slave, iter) {
1018 targets_rx = slave->target_last_arp_rx;
1019 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1020 targets_rx[i] = targets_rx[i+1];
1021 targets_rx[i] = 0;
1022 }
1023 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1024 targets[i] = targets[i+1];
1025 targets[i] = 0;
1026
1027 return 0;
1028 }
1029
1030 void bond_option_arp_ip_targets_clear(struct bonding *bond)
1031 {
1032 int i;
1033
1034 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1035 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1036 }
1037
1038 static int bond_option_arp_ip_targets_set(struct bonding *bond,
1039 const struct bond_opt_value *newval)
1040 {
1041 int ret = -EPERM;
1042 __be32 target;
1043
1044 if (newval->string) {
1045 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
1046 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1047 &target);
1048 return ret;
1049 }
1050 if (newval->string[0] == '+')
1051 ret = bond_option_arp_ip_target_add(bond, target);
1052 else if (newval->string[0] == '-')
1053 ret = bond_option_arp_ip_target_rem(bond, target);
1054 else
1055 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1056 } else {
1057 target = newval->value;
1058 ret = bond_option_arp_ip_target_add(bond, target);
1059 }
1060
1061 return ret;
1062 }
1063
1064 static int bond_option_arp_validate_set(struct bonding *bond,
1065 const struct bond_opt_value *newval)
1066 {
1067 netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n",
1068 newval->string, newval->value);
1069
1070 if (bond->dev->flags & IFF_UP) {
1071 if (!newval->value)
1072 bond->recv_probe = NULL;
1073 else if (bond->params.arp_interval)
1074 bond->recv_probe = bond_arp_rcv;
1075 }
1076 bond->params.arp_validate = newval->value;
1077
1078 return 0;
1079 }
1080
1081 static int bond_option_arp_all_targets_set(struct bonding *bond,
1082 const struct bond_opt_value *newval)
1083 {
1084 netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1085 newval->string, newval->value);
1086 bond->params.arp_all_targets = newval->value;
1087
1088 return 0;
1089 }
1090
1091 static int bond_option_primary_set(struct bonding *bond,
1092 const struct bond_opt_value *newval)
1093 {
1094 char *p, *primary = newval->string;
1095 struct list_head *iter;
1096 struct slave *slave;
1097
1098 block_netpoll_tx();
1099
1100 p = strchr(primary, '\n');
1101 if (p)
1102 *p = '\0';
1103 /* check to see if we are clearing primary */
1104 if (!strlen(primary)) {
1105 netdev_info(bond->dev, "Setting primary slave to None\n");
1106 RCU_INIT_POINTER(bond->primary_slave, NULL);
1107 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1108 bond_select_active_slave(bond);
1109 goto out;
1110 }
1111
1112 bond_for_each_slave(bond, slave, iter) {
1113 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1114 netdev_info(bond->dev, "Setting %s as primary slave\n",
1115 slave->dev->name);
1116 rcu_assign_pointer(bond->primary_slave, slave);
1117 strcpy(bond->params.primary, slave->dev->name);
1118 bond_select_active_slave(bond);
1119 goto out;
1120 }
1121 }
1122
1123 if (rtnl_dereference(bond->primary_slave)) {
1124 netdev_info(bond->dev, "Setting primary slave to None\n");
1125 RCU_INIT_POINTER(bond->primary_slave, NULL);
1126 bond_select_active_slave(bond);
1127 }
1128 strncpy(bond->params.primary, primary, IFNAMSIZ);
1129 bond->params.primary[IFNAMSIZ - 1] = 0;
1130
1131 netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n",
1132 primary, bond->dev->name);
1133
1134 out:
1135 unblock_netpoll_tx();
1136
1137 return 0;
1138 }
1139
1140 static int bond_option_primary_reselect_set(struct bonding *bond,
1141 const struct bond_opt_value *newval)
1142 {
1143 netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1144 newval->string, newval->value);
1145 bond->params.primary_reselect = newval->value;
1146
1147 block_netpoll_tx();
1148 bond_select_active_slave(bond);
1149 unblock_netpoll_tx();
1150
1151 return 0;
1152 }
1153
1154 static int bond_option_fail_over_mac_set(struct bonding *bond,
1155 const struct bond_opt_value *newval)
1156 {
1157 netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1158 newval->string, newval->value);
1159 bond->params.fail_over_mac = newval->value;
1160
1161 return 0;
1162 }
1163
1164 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1165 const struct bond_opt_value *newval)
1166 {
1167 netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1168 newval->string, newval->value);
1169 bond->params.xmit_policy = newval->value;
1170
1171 return 0;
1172 }
1173
1174 static int bond_option_resend_igmp_set(struct bonding *bond,
1175 const struct bond_opt_value *newval)
1176 {
1177 netdev_info(bond->dev, "Setting resend_igmp to %llu\n",
1178 newval->value);
1179 bond->params.resend_igmp = newval->value;
1180
1181 return 0;
1182 }
1183
1184 static int bond_option_num_peer_notif_set(struct bonding *bond,
1185 const struct bond_opt_value *newval)
1186 {
1187 bond->params.num_peer_notif = newval->value;
1188
1189 return 0;
1190 }
1191
1192 static int bond_option_all_slaves_active_set(struct bonding *bond,
1193 const struct bond_opt_value *newval)
1194 {
1195 struct list_head *iter;
1196 struct slave *slave;
1197
1198 if (newval->value == bond->params.all_slaves_active)
1199 return 0;
1200 bond->params.all_slaves_active = newval->value;
1201 bond_for_each_slave(bond, slave, iter) {
1202 if (!bond_is_active_slave(slave)) {
1203 if (newval->value)
1204 slave->inactive = 0;
1205 else
1206 slave->inactive = 1;
1207 }
1208 }
1209
1210 return 0;
1211 }
1212
1213 static int bond_option_min_links_set(struct bonding *bond,
1214 const struct bond_opt_value *newval)
1215 {
1216 netdev_info(bond->dev, "Setting min links value to %llu\n",
1217 newval->value);
1218 bond->params.min_links = newval->value;
1219 bond_set_carrier(bond);
1220
1221 return 0;
1222 }
1223
1224 static int bond_option_lp_interval_set(struct bonding *bond,
1225 const struct bond_opt_value *newval)
1226 {
1227 bond->params.lp_interval = newval->value;
1228
1229 return 0;
1230 }
1231
1232 static int bond_option_pps_set(struct bonding *bond,
1233 const struct bond_opt_value *newval)
1234 {
1235 bond->params.packets_per_slave = newval->value;
1236 if (newval->value > 0) {
1237 bond->params.reciprocal_packets_per_slave =
1238 reciprocal_value(newval->value);
1239 } else {
1240 /* reciprocal_packets_per_slave is unused if
1241 * packets_per_slave is 0 or 1, just initialize it
1242 */
1243 bond->params.reciprocal_packets_per_slave =
1244 (struct reciprocal_value) { 0 };
1245 }
1246
1247 return 0;
1248 }
1249
1250 static int bond_option_lacp_rate_set(struct bonding *bond,
1251 const struct bond_opt_value *newval)
1252 {
1253 netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n",
1254 newval->string, newval->value);
1255 bond->params.lacp_fast = newval->value;
1256 bond_3ad_update_lacp_rate(bond);
1257
1258 return 0;
1259 }
1260
1261 static int bond_option_ad_select_set(struct bonding *bond,
1262 const struct bond_opt_value *newval)
1263 {
1264 netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n",
1265 newval->string, newval->value);
1266 bond->params.ad_select = newval->value;
1267
1268 return 0;
1269 }
1270
1271 static int bond_option_queue_id_set(struct bonding *bond,
1272 const struct bond_opt_value *newval)
1273 {
1274 struct slave *slave, *update_slave;
1275 struct net_device *sdev;
1276 struct list_head *iter;
1277 char *delim;
1278 int ret = 0;
1279 u16 qid;
1280
1281 /* delim will point to queue id if successful */
1282 delim = strchr(newval->string, ':');
1283 if (!delim)
1284 goto err_no_cmd;
1285
1286 /* Terminate string that points to device name and bump it
1287 * up one, so we can read the queue id there.
1288 */
1289 *delim = '\0';
1290 if (sscanf(++delim, "%hd\n", &qid) != 1)
1291 goto err_no_cmd;
1292
1293 /* Check buffer length, valid ifname and queue id */
1294 if (!dev_valid_name(newval->string) ||
1295 qid > bond->dev->real_num_tx_queues)
1296 goto err_no_cmd;
1297
1298 /* Get the pointer to that interface if it exists */
1299 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1300 if (!sdev)
1301 goto err_no_cmd;
1302
1303 /* Search for thes slave and check for duplicate qids */
1304 update_slave = NULL;
1305 bond_for_each_slave(bond, slave, iter) {
1306 if (sdev == slave->dev)
1307 /* We don't need to check the matching
1308 * slave for dups, since we're overwriting it
1309 */
1310 update_slave = slave;
1311 else if (qid && qid == slave->queue_id) {
1312 goto err_no_cmd;
1313 }
1314 }
1315
1316 if (!update_slave)
1317 goto err_no_cmd;
1318
1319 /* Actually set the qids for the slave */
1320 update_slave->queue_id = qid;
1321
1322 out:
1323 return ret;
1324
1325 err_no_cmd:
1326 netdev_info(bond->dev, "invalid input for queue_id set\n");
1327 ret = -EPERM;
1328 goto out;
1329
1330 }
1331
1332 static int bond_option_slaves_set(struct bonding *bond,
1333 const struct bond_opt_value *newval)
1334 {
1335 char command[IFNAMSIZ + 1] = { 0, };
1336 struct net_device *dev;
1337 char *ifname;
1338 int ret;
1339
1340 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1341 ifname = command + 1;
1342 if ((strlen(command) <= 1) ||
1343 !dev_valid_name(ifname))
1344 goto err_no_cmd;
1345
1346 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1347 if (!dev) {
1348 netdev_info(bond->dev, "interface %s does not exist!\n",
1349 ifname);
1350 ret = -ENODEV;
1351 goto out;
1352 }
1353
1354 switch (command[0]) {
1355 case '+':
1356 netdev_info(bond->dev, "Adding slave %s\n", dev->name);
1357 ret = bond_enslave(bond->dev, dev);
1358 break;
1359
1360 case '-':
1361 netdev_info(bond->dev, "Removing slave %s\n", dev->name);
1362 ret = bond_release(bond->dev, dev);
1363 break;
1364
1365 default:
1366 goto err_no_cmd;
1367 }
1368
1369 out:
1370 return ret;
1371
1372 err_no_cmd:
1373 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1374 ret = -EPERM;
1375 goto out;
1376 }
1377
1378 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1379 const struct bond_opt_value *newval)
1380 {
1381 netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1382 newval->string, newval->value);
1383 bond->params.tlb_dynamic_lb = newval->value;
1384
1385 return 0;
1386 }
1387
1388 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1389 const struct bond_opt_value *newval)
1390 {
1391 netdev_info(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1392 newval->value);
1393
1394 bond->params.ad_actor_sys_prio = newval->value;
1395 return 0;
1396 }
1397
1398 static int bond_option_ad_actor_system_set(struct bonding *bond,
1399 const struct bond_opt_value *newval)
1400 {
1401 u8 macaddr[ETH_ALEN];
1402 u8 *mac;
1403 int i;
1404
1405 if (newval->string) {
1406 i = sscanf(newval->string, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
1407 &macaddr[0], &macaddr[1], &macaddr[2],
1408 &macaddr[3], &macaddr[4], &macaddr[5]);
1409 if (i != ETH_ALEN)
1410 goto err;
1411 mac = macaddr;
1412 } else {
1413 mac = (u8 *)&newval->value;
1414 }
1415
1416 if (!is_valid_ether_addr(mac))
1417 goto err;
1418
1419 netdev_info(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1420 ether_addr_copy(bond->params.ad_actor_system, mac);
1421 return 0;
1422
1423 err:
1424 netdev_err(bond->dev, "Invalid MAC address.\n");
1425 return -EINVAL;
1426 }
1427
1428 static int bond_option_ad_user_port_key_set(struct bonding *bond,
1429 const struct bond_opt_value *newval)
1430 {
1431 netdev_info(bond->dev, "Setting ad_user_port_key to %llu\n",
1432 newval->value);
1433
1434 bond->params.ad_user_port_key = newval->value;
1435 return 0;
1436 }
Linux kernel - Deliverables
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