projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into...
[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 };
425
426 /* Searches for an option by name */
427 const struct bond_option *bond_opt_get_by_name(const char *name)
428 {
429 const struct bond_option *opt;
430 int option;
431
432 for (option = 0; option < BOND_OPT_LAST; option++) {
433 opt = bond_opt_get(option);
434 if (opt && !strcmp(opt->name, name))
435 return opt;
436 }
437
438 return NULL;
439 }
440
441 /* Searches for a value in opt's values[] table */
442 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
443 {
444 const struct bond_option *opt;
445 int i;
446
447 opt = bond_opt_get(option);
448 if (WARN_ON(!opt))
449 return NULL;
450 for (i = 0; opt->values && opt->values[i].string; i++)
451 if (opt->values[i].value == val)
452 return &opt->values[i];
453
454 return NULL;
455 }
456
457 /* Searches for a value in opt's values[] table which matches the flagmask */
458 static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
459 u32 flagmask)
460 {
461 int i;
462
463 for (i = 0; opt->values && opt->values[i].string; i++)
464 if (opt->values[i].flags & flagmask)
465 return &opt->values[i];
466
467 return NULL;
468 }
469
470 /* If maxval is missing then there's no range to check. In case minval is
471 * missing then it's considered to be 0.
472 */
473 static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
474 {
475 const struct bond_opt_value *minval, *maxval;
476
477 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
478 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
479 if (!maxval || (minval && val < minval->value) || val > maxval->value)
480 return false;
481
482 return true;
483 }
484
485 /**
486 * bond_opt_parse - parse option value
487 * @opt: the option to parse against
488 * @val: value to parse
489 *
490 * This function tries to extract the value from @val and check if it's
491 * a possible match for the option and returns NULL if a match isn't found,
492 * or the struct_opt_value that matched. It also strips the new line from
493 * @val->string if it's present.
494 */
495 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
496 struct bond_opt_value *val)
497 {
498 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
499 const struct bond_opt_value *tbl;
500 const struct bond_opt_value *ret = NULL;
501 bool checkval;
502 int i, rv;
503
504 /* No parsing if the option wants a raw val */
505 if (opt->flags & BOND_OPTFLAG_RAWVAL)
506 return val;
507
508 tbl = opt->values;
509 if (!tbl)
510 goto out;
511
512 /* ULLONG_MAX is used to bypass string processing */
513 checkval = val->value != ULLONG_MAX;
514 if (!checkval) {
515 if (!val->string)
516 goto out;
517 p = strchr(val->string, '\n');
518 if (p)
519 *p = '\0';
520 for (p = val->string; *p; p++)
521 if (!(isdigit(*p) || isspace(*p)))
522 break;
523 /* The following code extracts the string to match or the value
524 * and sets checkval appropriately
525 */
526 if (*p) {
527 rv = sscanf(val->string, "%32s", valstr);
528 } else {
529 rv = sscanf(val->string, "%llu", &val->value);
530 checkval = true;
531 }
532 if (!rv)
533 goto out;
534 }
535
536 for (i = 0; tbl[i].string; i++) {
537 /* Check for exact match */
538 if (checkval) {
539 if (val->value == tbl[i].value)
540 ret = &tbl[i];
541 } else {
542 if (!strcmp(valstr, "default") &&
543 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
544 ret = &tbl[i];
545
546 if (!strcmp(valstr, tbl[i].string))
547 ret = &tbl[i];
548 }
549 /* Found an exact match */
550 if (ret)
551 goto out;
552 }
553 /* Possible range match */
554 if (checkval && bond_opt_check_range(opt, val->value))
555 ret = val;
556 out:
557 return ret;
558 }
559
560 /* Check opt's dependencies against bond mode and currently set options */
561 static int bond_opt_check_deps(struct bonding *bond,
562 const struct bond_option *opt)
563 {
564 struct bond_params *params = &bond->params;
565
566 if (test_bit(params->mode, &opt->unsuppmodes))
567 return -EACCES;
568 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
569 return -ENOTEMPTY;
570 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
571 return -EBUSY;
572
573 return 0;
574 }
575
576 static void bond_opt_dep_print(struct bonding *bond,
577 const struct bond_option *opt)
578 {
579 const struct bond_opt_value *modeval;
580 struct bond_params *params;
581
582 params = &bond->params;
583 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
584 if (test_bit(params->mode, &opt->unsuppmodes))
585 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
586 opt->name, modeval->string, modeval->value);
587 }
588
589 static void bond_opt_error_interpret(struct bonding *bond,
590 const struct bond_option *opt,
591 int error, const struct bond_opt_value *val)
592 {
593 const struct bond_opt_value *minval, *maxval;
594 char *p;
595
596 switch (error) {
597 case -EINVAL:
598 if (val) {
599 if (val->string) {
600 /* sometimes RAWVAL opts may have new lines */
601 p = strchr(val->string, '\n');
602 if (p)
603 *p = '\0';
604 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
605 opt->name, val->string);
606 } else {
607 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
608 opt->name, val->value);
609 }
610 }
611 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
612 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
613 if (!maxval)
614 break;
615 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
616 opt->name, minval ? minval->value : 0, maxval->value);
617 break;
618 case -EACCES:
619 bond_opt_dep_print(bond, opt);
620 break;
621 case -ENOTEMPTY:
622 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
623 opt->name);
624 break;
625 case -EBUSY:
626 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
627 opt->name);
628 break;
629 default:
630 break;
631 }
632 }
633
634 /**
635 * __bond_opt_set - set a bonding option
636 * @bond: target bond device
637 * @option: option to set
638 * @val: value to set it to
639 *
640 * This function is used to change the bond's option value, it can be
641 * used for both enabling/changing an option and for disabling it. RTNL lock
642 * must be obtained before calling this function.
643 */
644 int __bond_opt_set(struct bonding *bond,
645 unsigned int option, struct bond_opt_value *val)
646 {
647 const struct bond_opt_value *retval = NULL;
648 const struct bond_option *opt;
649 int ret = -ENOENT;
650
651 ASSERT_RTNL();
652
653 opt = bond_opt_get(option);
654 if (WARN_ON(!val) || WARN_ON(!opt))
655 goto out;
656 ret = bond_opt_check_deps(bond, opt);
657 if (ret)
658 goto out;
659 retval = bond_opt_parse(opt, val);
660 if (!retval) {
661 ret = -EINVAL;
662 goto out;
663 }
664 ret = opt->set(bond, retval);
665 out:
666 if (ret)
667 bond_opt_error_interpret(bond, opt, ret, val);
668 else if (bond->dev->reg_state == NETREG_REGISTERED)
669 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
670
671 return ret;
672 }
673
674 /**
675 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
676 * @bond: target bond device
677 * @option: option to set
678 * @buf: value to set it to
679 *
680 * This function tries to acquire RTNL without blocking and if successful
681 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
682 */
683 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
684 {
685 struct bond_opt_value optval;
686 int ret;
687
688 if (!rtnl_trylock())
689 return restart_syscall();
690 bond_opt_initstr(&optval, buf);
691 ret = __bond_opt_set(bond, option, &optval);
692 rtnl_unlock();
693
694 return ret;
695 }
696
697 /**
698 * bond_opt_get - get a pointer to an option
699 * @option: option for which to return a pointer
700 *
701 * This function checks if option is valid and if so returns a pointer
702 * to its entry in the bond_opts[] option array.
703 */
704 const struct bond_option *bond_opt_get(unsigned int option)
705 {
706 if (!BOND_OPT_VALID(option))
707 return NULL;
708
709 return &bond_opts[option];
710 }
711
712 static int bond_option_mode_set(struct bonding *bond,
713 const struct bond_opt_value *newval)
714 {
715 if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) {
716 netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
717 newval->string);
718 /* disable arp monitoring */
719 bond->params.arp_interval = 0;
720 /* set miimon to default value */
721 bond->params.miimon = BOND_DEFAULT_MIIMON;
722 netdev_info(bond->dev, "Setting MII monitoring interval to %d\n",
723 bond->params.miimon);
724 }
725
726 /* don't cache arp_validate between modes */
727 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
728 bond->params.mode = newval->value;
729
730 return 0;
731 }
732
733 static struct net_device *__bond_option_active_slave_get(struct bonding *bond,
734 struct slave *slave)
735 {
736 return bond_uses_primary(bond) && slave ? slave->dev : NULL;
737 }
738
739 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
740 {
741 struct slave *slave = rcu_dereference(bond->curr_active_slave);
742
743 return __bond_option_active_slave_get(bond, slave);
744 }
745
746 static int bond_option_active_slave_set(struct bonding *bond,
747 const struct bond_opt_value *newval)
748 {
749 char ifname[IFNAMSIZ] = { 0, };
750 struct net_device *slave_dev;
751 int ret = 0;
752
753 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
754 if (!strlen(ifname) || newval->string[0] == '\n') {
755 slave_dev = NULL;
756 } else {
757 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
758 if (!slave_dev)
759 return -ENODEV;
760 }
761
762 if (slave_dev) {
763 if (!netif_is_bond_slave(slave_dev)) {
764 netdev_err(bond->dev, "Device %s is not bonding slave\n",
765 slave_dev->name);
766 return -EINVAL;
767 }
768
769 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
770 netdev_err(bond->dev, "Device %s is not our slave\n",
771 slave_dev->name);
772 return -EINVAL;
773 }
774 }
775
776 block_netpoll_tx();
777 /* check to see if we are clearing active */
778 if (!slave_dev) {
779 netdev_info(bond->dev, "Clearing current active slave\n");
780 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
781 bond_select_active_slave(bond);
782 } else {
783 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
784 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
785
786 BUG_ON(!new_active);
787
788 if (new_active == old_active) {
789 /* do nothing */
790 netdev_info(bond->dev, "%s is already the current active slave\n",
791 new_active->dev->name);
792 } else {
793 if (old_active && (new_active->link == BOND_LINK_UP) &&
794 bond_slave_is_up(new_active)) {
795 netdev_info(bond->dev, "Setting %s as active slave\n",
796 new_active->dev->name);
797 bond_change_active_slave(bond, new_active);
798 } else {
799 netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n",
800 new_active->dev->name,
801 new_active->dev->name);
802 ret = -EINVAL;
803 }
804 }
805 }
806 unblock_netpoll_tx();
807
808 return ret;
809 }
810
811 /* There are two tricky bits here. First, if MII monitoring is activated, then
812 * we must disable ARP monitoring. Second, if the timer isn't running, we must
813 * start it.
814 */
815 static int bond_option_miimon_set(struct bonding *bond,
816 const struct bond_opt_value *newval)
817 {
818 netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n",
819 newval->value);
820 bond->params.miimon = newval->value;
821 if (bond->params.updelay)
822 netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
823 bond->params.updelay * bond->params.miimon);
824 if (bond->params.downdelay)
825 netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
826 bond->params.downdelay * bond->params.miimon);
827 if (newval->value && bond->params.arp_interval) {
828 netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
829 bond->params.arp_interval = 0;
830 if (bond->params.arp_validate)
831 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
832 }
833 if (bond->dev->flags & IFF_UP) {
834 /* If the interface is up, we may need to fire off
835 * the MII timer. If the interface is down, the
836 * timer will get fired off when the open function
837 * is called.
838 */
839 if (!newval->value) {
840 cancel_delayed_work_sync(&bond->mii_work);
841 } else {
842 cancel_delayed_work_sync(&bond->arp_work);
843 queue_delayed_work(bond->wq, &bond->mii_work, 0);
844 }
845 }
846
847 return 0;
848 }
849
850 /* Set up and down delays. These must be multiples of the
851 * MII monitoring value, and are stored internally as the multiplier.
852 * Thus, we must translate to MS for the real world.
853 */
854 static int bond_option_updelay_set(struct bonding *bond,
855 const struct bond_opt_value *newval)
856 {
857 int value = newval->value;
858
859 if (!bond->params.miimon) {
860 netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n");
861 return -EPERM;
862 }
863 if ((value % bond->params.miimon) != 0) {
864 netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
865 value, bond->params.miimon,
866 (value / bond->params.miimon) *
867 bond->params.miimon);
868 }
869 bond->params.updelay = value / bond->params.miimon;
870 netdev_info(bond->dev, "Setting up delay to %d\n",
871 bond->params.updelay * bond->params.miimon);
872
873 return 0;
874 }
875
876 static int bond_option_downdelay_set(struct bonding *bond,
877 const struct bond_opt_value *newval)
878 {
879 int value = newval->value;
880
881 if (!bond->params.miimon) {
882 netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n");
883 return -EPERM;
884 }
885 if ((value % bond->params.miimon) != 0) {
886 netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
887 value, bond->params.miimon,
888 (value / bond->params.miimon) *
889 bond->params.miimon);
890 }
891 bond->params.downdelay = value / bond->params.miimon;
892 netdev_info(bond->dev, "Setting down delay to %d\n",
893 bond->params.downdelay * bond->params.miimon);
894
895 return 0;
896 }
897
898 static int bond_option_use_carrier_set(struct bonding *bond,
899 const struct bond_opt_value *newval)
900 {
901 netdev_info(bond->dev, "Setting use_carrier to %llu\n",
902 newval->value);
903 bond->params.use_carrier = newval->value;
904
905 return 0;
906 }
907
908 /* There are two tricky bits here. First, if ARP monitoring is activated, then
909 * we must disable MII monitoring. Second, if the ARP timer isn't running,
910 * we must start it.
911 */
912 static int bond_option_arp_interval_set(struct bonding *bond,
913 const struct bond_opt_value *newval)
914 {
915 netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n",
916 newval->value);
917 bond->params.arp_interval = newval->value;
918 if (newval->value) {
919 if (bond->params.miimon) {
920 netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
921 bond->params.miimon = 0;
922 }
923 if (!bond->params.arp_targets[0])
924 netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
925 }
926 if (bond->dev->flags & IFF_UP) {
927 /* If the interface is up, we may need to fire off
928 * the ARP timer. If the interface is down, the
929 * timer will get fired off when the open function
930 * is called.
931 */
932 if (!newval->value) {
933 if (bond->params.arp_validate)
934 bond->recv_probe = NULL;
935 cancel_delayed_work_sync(&bond->arp_work);
936 } else {
937 /* arp_validate can be set only in active-backup mode */
938 bond->recv_probe = bond_arp_rcv;
939 cancel_delayed_work_sync(&bond->mii_work);
940 queue_delayed_work(bond->wq, &bond->arp_work, 0);
941 }
942 }
943
944 return 0;
945 }
946
947 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
948 __be32 target,
949 unsigned long last_rx)
950 {
951 __be32 *targets = bond->params.arp_targets;
952 struct list_head *iter;
953 struct slave *slave;
954
955 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
956 bond_for_each_slave(bond, slave, iter)
957 slave->target_last_arp_rx[slot] = last_rx;
958 targets[slot] = target;
959 }
960 }
961
962 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
963 {
964 __be32 *targets = bond->params.arp_targets;
965 int ind;
966
967 if (!bond_is_ip_target_ok(target)) {
968 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
969 &target);
970 return -EINVAL;
971 }
972
973 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
974 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
975 &target);
976 return -EINVAL;
977 }
978
979 ind = bond_get_targets_ip(targets, 0); /* first free slot */
980 if (ind == -1) {
981 netdev_err(bond->dev, "ARP target table is full!\n");
982 return -EINVAL;
983 }
984
985 netdev_info(bond->dev, "Adding ARP target %pI4\n", &target);
986
987 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
988
989 return 0;
990 }
991
992 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
993 {
994 return _bond_option_arp_ip_target_add(bond, target);
995 }
996
997 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
998 {
999 __be32 *targets = bond->params.arp_targets;
1000 struct list_head *iter;
1001 struct slave *slave;
1002 unsigned long *targets_rx;
1003 int ind, i;
1004
1005 if (!bond_is_ip_target_ok(target)) {
1006 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1007 &target);
1008 return -EINVAL;
1009 }
1010
1011 ind = bond_get_targets_ip(targets, target);
1012 if (ind == -1) {
1013 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1014 &target);
1015 return -EINVAL;
1016 }
1017
1018 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1019 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1020
1021 netdev_info(bond->dev, "Removing ARP target %pI4\n", &target);
1022
1023 bond_for_each_slave(bond, slave, iter) {
1024 targets_rx = slave->target_last_arp_rx;
1025 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1026 targets_rx[i] = targets_rx[i+1];
1027 targets_rx[i] = 0;
1028 }
1029 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1030 targets[i] = targets[i+1];
1031 targets[i] = 0;
1032
1033 return 0;
1034 }
1035
1036 void bond_option_arp_ip_targets_clear(struct bonding *bond)
1037 {
1038 int i;
1039
1040 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1041 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1042 }
1043
1044 static int bond_option_arp_ip_targets_set(struct bonding *bond,
1045 const struct bond_opt_value *newval)
1046 {
1047 int ret = -EPERM;
1048 __be32 target;
1049
1050 if (newval->string) {
1051 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
1052 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1053 &target);
1054 return ret;
1055 }
1056 if (newval->string[0] == '+')
1057 ret = bond_option_arp_ip_target_add(bond, target);
1058 else if (newval->string[0] == '-')
1059 ret = bond_option_arp_ip_target_rem(bond, target);
1060 else
1061 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1062 } else {
1063 target = newval->value;
1064 ret = bond_option_arp_ip_target_add(bond, target);
1065 }
1066
1067 return ret;
1068 }
1069
1070 static int bond_option_arp_validate_set(struct bonding *bond,
1071 const struct bond_opt_value *newval)
1072 {
1073 netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n",
1074 newval->string, newval->value);
1075
1076 if (bond->dev->flags & IFF_UP) {
1077 if (!newval->value)
1078 bond->recv_probe = NULL;
1079 else if (bond->params.arp_interval)
1080 bond->recv_probe = bond_arp_rcv;
1081 }
1082 bond->params.arp_validate = newval->value;
1083
1084 return 0;
1085 }
1086
1087 static int bond_option_arp_all_targets_set(struct bonding *bond,
1088 const struct bond_opt_value *newval)
1089 {
1090 netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1091 newval->string, newval->value);
1092 bond->params.arp_all_targets = newval->value;
1093
1094 return 0;
1095 }
1096
1097 static int bond_option_primary_set(struct bonding *bond,
1098 const struct bond_opt_value *newval)
1099 {
1100 char *p, *primary = newval->string;
1101 struct list_head *iter;
1102 struct slave *slave;
1103
1104 block_netpoll_tx();
1105
1106 p = strchr(primary, '\n');
1107 if (p)
1108 *p = '\0';
1109 /* check to see if we are clearing primary */
1110 if (!strlen(primary)) {
1111 netdev_info(bond->dev, "Setting primary slave to None\n");
1112 RCU_INIT_POINTER(bond->primary_slave, NULL);
1113 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1114 bond_select_active_slave(bond);
1115 goto out;
1116 }
1117
1118 bond_for_each_slave(bond, slave, iter) {
1119 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1120 netdev_info(bond->dev, "Setting %s as primary slave\n",
1121 slave->dev->name);
1122 rcu_assign_pointer(bond->primary_slave, slave);
1123 strcpy(bond->params.primary, slave->dev->name);
1124 bond_select_active_slave(bond);
1125 goto out;
1126 }
1127 }
1128
1129 if (rtnl_dereference(bond->primary_slave)) {
1130 netdev_info(bond->dev, "Setting primary slave to None\n");
1131 RCU_INIT_POINTER(bond->primary_slave, NULL);
1132 bond_select_active_slave(bond);
1133 }
1134 strncpy(bond->params.primary, primary, IFNAMSIZ);
1135 bond->params.primary[IFNAMSIZ - 1] = 0;
1136
1137 netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n",
1138 primary, bond->dev->name);
1139
1140 out:
1141 unblock_netpoll_tx();
1142
1143 return 0;
1144 }
1145
1146 static int bond_option_primary_reselect_set(struct bonding *bond,
1147 const struct bond_opt_value *newval)
1148 {
1149 netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1150 newval->string, newval->value);
1151 bond->params.primary_reselect = newval->value;
1152
1153 block_netpoll_tx();
1154 bond_select_active_slave(bond);
1155 unblock_netpoll_tx();
1156
1157 return 0;
1158 }
1159
1160 static int bond_option_fail_over_mac_set(struct bonding *bond,
1161 const struct bond_opt_value *newval)
1162 {
1163 netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1164 newval->string, newval->value);
1165 bond->params.fail_over_mac = newval->value;
1166
1167 return 0;
1168 }
1169
1170 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1171 const struct bond_opt_value *newval)
1172 {
1173 netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1174 newval->string, newval->value);
1175 bond->params.xmit_policy = newval->value;
1176
1177 return 0;
1178 }
1179
1180 static int bond_option_resend_igmp_set(struct bonding *bond,
1181 const struct bond_opt_value *newval)
1182 {
1183 netdev_info(bond->dev, "Setting resend_igmp to %llu\n",
1184 newval->value);
1185 bond->params.resend_igmp = newval->value;
1186
1187 return 0;
1188 }
1189
1190 static int bond_option_num_peer_notif_set(struct bonding *bond,
1191 const struct bond_opt_value *newval)
1192 {
1193 bond->params.num_peer_notif = newval->value;
1194
1195 return 0;
1196 }
1197
1198 static int bond_option_all_slaves_active_set(struct bonding *bond,
1199 const struct bond_opt_value *newval)
1200 {
1201 struct list_head *iter;
1202 struct slave *slave;
1203
1204 if (newval->value == bond->params.all_slaves_active)
1205 return 0;
1206 bond->params.all_slaves_active = newval->value;
1207 bond_for_each_slave(bond, slave, iter) {
1208 if (!bond_is_active_slave(slave)) {
1209 if (newval->value)
1210 slave->inactive = 0;
1211 else
1212 slave->inactive = 1;
1213 }
1214 }
1215
1216 return 0;
1217 }
1218
1219 static int bond_option_min_links_set(struct bonding *bond,
1220 const struct bond_opt_value *newval)
1221 {
1222 netdev_info(bond->dev, "Setting min links value to %llu\n",
1223 newval->value);
1224 bond->params.min_links = newval->value;
1225 bond_set_carrier(bond);
1226
1227 return 0;
1228 }
1229
1230 static int bond_option_lp_interval_set(struct bonding *bond,
1231 const struct bond_opt_value *newval)
1232 {
1233 bond->params.lp_interval = newval->value;
1234
1235 return 0;
1236 }
1237
1238 static int bond_option_pps_set(struct bonding *bond,
1239 const struct bond_opt_value *newval)
1240 {
1241 bond->params.packets_per_slave = newval->value;
1242 if (newval->value > 0) {
1243 bond->params.reciprocal_packets_per_slave =
1244 reciprocal_value(newval->value);
1245 } else {
1246 /* reciprocal_packets_per_slave is unused if
1247 * packets_per_slave is 0 or 1, just initialize it
1248 */
1249 bond->params.reciprocal_packets_per_slave =
1250 (struct reciprocal_value) { 0 };
1251 }
1252
1253 return 0;
1254 }
1255
1256 static int bond_option_lacp_rate_set(struct bonding *bond,
1257 const struct bond_opt_value *newval)
1258 {
1259 netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n",
1260 newval->string, newval->value);
1261 bond->params.lacp_fast = newval->value;
1262 bond_3ad_update_lacp_rate(bond);
1263
1264 return 0;
1265 }
1266
1267 static int bond_option_ad_select_set(struct bonding *bond,
1268 const struct bond_opt_value *newval)
1269 {
1270 netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n",
1271 newval->string, newval->value);
1272 bond->params.ad_select = newval->value;
1273
1274 return 0;
1275 }
1276
1277 static int bond_option_queue_id_set(struct bonding *bond,
1278 const struct bond_opt_value *newval)
1279 {
1280 struct slave *slave, *update_slave;
1281 struct net_device *sdev;
1282 struct list_head *iter;
1283 char *delim;
1284 int ret = 0;
1285 u16 qid;
1286
1287 /* delim will point to queue id if successful */
1288 delim = strchr(newval->string, ':');
1289 if (!delim)
1290 goto err_no_cmd;
1291
1292 /* Terminate string that points to device name and bump it
1293 * up one, so we can read the queue id there.
1294 */
1295 *delim = '\0';
1296 if (sscanf(++delim, "%hd\n", &qid) != 1)
1297 goto err_no_cmd;
1298
1299 /* Check buffer length, valid ifname and queue id */
1300 if (!dev_valid_name(newval->string) ||
1301 qid > bond->dev->real_num_tx_queues)
1302 goto err_no_cmd;
1303
1304 /* Get the pointer to that interface if it exists */
1305 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1306 if (!sdev)
1307 goto err_no_cmd;
1308
1309 /* Search for thes slave and check for duplicate qids */
1310 update_slave = NULL;
1311 bond_for_each_slave(bond, slave, iter) {
1312 if (sdev == slave->dev)
1313 /* We don't need to check the matching
1314 * slave for dups, since we're overwriting it
1315 */
1316 update_slave = slave;
1317 else if (qid && qid == slave->queue_id) {
1318 goto err_no_cmd;
1319 }
1320 }
1321
1322 if (!update_slave)
1323 goto err_no_cmd;
1324
1325 /* Actually set the qids for the slave */
1326 update_slave->queue_id = qid;
1327
1328 out:
1329 return ret;
1330
1331 err_no_cmd:
1332 netdev_info(bond->dev, "invalid input for queue_id set\n");
1333 ret = -EPERM;
1334 goto out;
1335
1336 }
1337
1338 static int bond_option_slaves_set(struct bonding *bond,
1339 const struct bond_opt_value *newval)
1340 {
1341 char command[IFNAMSIZ + 1] = { 0, };
1342 struct net_device *dev;
1343 char *ifname;
1344 int ret;
1345
1346 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1347 ifname = command + 1;
1348 if ((strlen(command) <= 1) ||
1349 !dev_valid_name(ifname))
1350 goto err_no_cmd;
1351
1352 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1353 if (!dev) {
1354 netdev_info(bond->dev, "interface %s does not exist!\n",
1355 ifname);
1356 ret = -ENODEV;
1357 goto out;
1358 }
1359
1360 switch (command[0]) {
1361 case '+':
1362 netdev_info(bond->dev, "Adding slave %s\n", dev->name);
1363 ret = bond_enslave(bond->dev, dev);
1364 break;
1365
1366 case '-':
1367 netdev_info(bond->dev, "Removing slave %s\n", dev->name);
1368 ret = bond_release(bond->dev, dev);
1369 break;
1370
1371 default:
1372 goto err_no_cmd;
1373 }
1374
1375 out:
1376 return ret;
1377
1378 err_no_cmd:
1379 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1380 ret = -EPERM;
1381 goto out;
1382 }
1383
1384 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1385 const struct bond_opt_value *newval)
1386 {
1387 netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1388 newval->string, newval->value);
1389 bond->params.tlb_dynamic_lb = newval->value;
1390
1391 return 0;
1392 }
1393
1394 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1395 const struct bond_opt_value *newval)
1396 {
1397 netdev_info(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1398 newval->value);
1399
1400 bond->params.ad_actor_sys_prio = newval->value;
1401 return 0;
1402 }
1403
1404 static int bond_option_ad_actor_system_set(struct bonding *bond,
1405 const struct bond_opt_value *newval)
1406 {
1407 u8 macaddr[ETH_ALEN];
1408 u8 *mac;
1409 int i;
1410
1411 if (newval->string) {
1412 i = sscanf(newval->string, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
1413 &macaddr[0], &macaddr[1], &macaddr[2],
1414 &macaddr[3], &macaddr[4], &macaddr[5]);
1415 if (i != ETH_ALEN)
1416 goto err;
1417 mac = macaddr;
1418 } else {
1419 mac = (u8 *)&newval->value;
1420 }
1421
1422 if (!is_valid_ether_addr(mac))
1423 goto err;
1424
1425 netdev_info(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1426 ether_addr_copy(bond->params.ad_actor_system, mac);
1427 return 0;
1428
1429 err:
1430 netdev_err(bond->dev, "Invalid MAC address.\n");
1431 return -EINVAL;
1432 }
1433
1434 static int bond_option_ad_user_port_key_set(struct bonding *bond,
1435 const struct bond_opt_value *newval)
1436 {
1437 netdev_info(bond->dev, "Setting ad_user_port_key to %llu\n",
1438 newval->value);
1439
1440 bond->params.ad_user_port_key = newval->value;
1441 return 0;
1442 }
Linux kernel - Deliverables
This page took 0.059486 seconds and 6 git commands to generate.