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8#include <linux/errno.h>
9#include <linux/if.h>
10#include <linux/netdevice.h>
11#include <linux/spinlock.h>
12#include <linux/rcupdate.h>
13#include <linux/ctype.h>
14#include <linux/inet.h>
15#include <linux/sched/signal.h>
16
17#include <net/bonding.h>
18
19static int bond_option_active_slave_set(struct bonding *bond,
20 const struct bond_opt_value *newval);
21static int bond_option_miimon_set(struct bonding *bond,
22 const struct bond_opt_value *newval);
23static int bond_option_updelay_set(struct bonding *bond,
24 const struct bond_opt_value *newval);
25static int bond_option_downdelay_set(struct bonding *bond,
26 const struct bond_opt_value *newval);
27static int bond_option_peer_notif_delay_set(struct bonding *bond,
28 const struct bond_opt_value *newval);
29static int bond_option_use_carrier_set(struct bonding *bond,
30 const struct bond_opt_value *newval);
31static int bond_option_arp_interval_set(struct bonding *bond,
32 const struct bond_opt_value *newval);
33static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
34static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
35static int bond_option_arp_ip_targets_set(struct bonding *bond,
36 const struct bond_opt_value *newval);
37static int bond_option_arp_validate_set(struct bonding *bond,
38 const struct bond_opt_value *newval);
39static int bond_option_arp_all_targets_set(struct bonding *bond,
40 const struct bond_opt_value *newval);
41static int bond_option_primary_set(struct bonding *bond,
42 const struct bond_opt_value *newval);
43static int bond_option_primary_reselect_set(struct bonding *bond,
44 const struct bond_opt_value *newval);
45static int bond_option_fail_over_mac_set(struct bonding *bond,
46 const struct bond_opt_value *newval);
47static int bond_option_xmit_hash_policy_set(struct bonding *bond,
48 const struct bond_opt_value *newval);
49static int bond_option_resend_igmp_set(struct bonding *bond,
50 const struct bond_opt_value *newval);
51static int bond_option_num_peer_notif_set(struct bonding *bond,
52 const struct bond_opt_value *newval);
53static int bond_option_all_slaves_active_set(struct bonding *bond,
54 const struct bond_opt_value *newval);
55static int bond_option_min_links_set(struct bonding *bond,
56 const struct bond_opt_value *newval);
57static int bond_option_lp_interval_set(struct bonding *bond,
58 const struct bond_opt_value *newval);
59static int bond_option_pps_set(struct bonding *bond,
60 const struct bond_opt_value *newval);
61static int bond_option_lacp_rate_set(struct bonding *bond,
62 const struct bond_opt_value *newval);
63static int bond_option_ad_select_set(struct bonding *bond,
64 const struct bond_opt_value *newval);
65static int bond_option_queue_id_set(struct bonding *bond,
66 const struct bond_opt_value *newval);
67static int bond_option_mode_set(struct bonding *bond,
68 const struct bond_opt_value *newval);
69static int bond_option_slaves_set(struct bonding *bond,
70 const struct bond_opt_value *newval);
71static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
72 const struct bond_opt_value *newval);
73static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
74 const struct bond_opt_value *newval);
75static int bond_option_ad_actor_system_set(struct bonding *bond,
76 const struct bond_opt_value *newval);
77static int bond_option_ad_user_port_key_set(struct bonding *bond,
78 const struct bond_opt_value *newval);
79
80
81static 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
92static 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
98static 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 { "vlan+srcmac", BOND_XMIT_POLICY_VLAN_SRCMAC, 0},
105 { NULL, -1, 0},
106};
107
108static const struct bond_opt_value bond_arp_validate_tbl[] = {
109 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
110 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
111 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
112 { "all", BOND_ARP_VALIDATE_ALL, 0},
113 { "filter", BOND_ARP_FILTER, 0},
114 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
115 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
116 { NULL, -1, 0},
117};
118
119static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
120 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
121 { "all", BOND_ARP_TARGETS_ALL, 0},
122 { NULL, -1, 0},
123};
124
125static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
126 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
127 { "active", BOND_FOM_ACTIVE, 0},
128 { "follow", BOND_FOM_FOLLOW, 0},
129 { NULL, -1, 0},
130};
131
132static const struct bond_opt_value bond_intmax_tbl[] = {
133 { "off", 0, BOND_VALFLAG_DEFAULT},
134 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
135 { NULL, -1, 0}
136};
137
138static const struct bond_opt_value bond_lacp_rate_tbl[] = {
139 { "slow", AD_LACP_SLOW, 0},
140 { "fast", AD_LACP_FAST, 0},
141 { NULL, -1, 0},
142};
143
144static const struct bond_opt_value bond_ad_select_tbl[] = {
145 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
146 { "bandwidth", BOND_AD_BANDWIDTH, 0},
147 { "count", BOND_AD_COUNT, 0},
148 { NULL, -1, 0},
149};
150
151static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
152 { "off", 0, 0},
153 { "maxval", 255, BOND_VALFLAG_MAX},
154 { "default", 1, BOND_VALFLAG_DEFAULT},
155 { NULL, -1, 0}
156};
157
158static const struct bond_opt_value bond_primary_reselect_tbl[] = {
159 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
160 { "better", BOND_PRI_RESELECT_BETTER, 0},
161 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
162 { NULL, -1},
163};
164
165static const struct bond_opt_value bond_use_carrier_tbl[] = {
166 { "off", 0, 0},
167 { "on", 1, BOND_VALFLAG_DEFAULT},
168 { NULL, -1, 0}
169};
170
171static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
172 { "off", 0, BOND_VALFLAG_DEFAULT},
173 { "on", 1, 0},
174 { NULL, -1, 0}
175};
176
177static const struct bond_opt_value bond_resend_igmp_tbl[] = {
178 { "off", 0, 0},
179 { "maxval", 255, BOND_VALFLAG_MAX},
180 { "default", 1, BOND_VALFLAG_DEFAULT},
181 { NULL, -1, 0}
182};
183
184static const struct bond_opt_value bond_lp_interval_tbl[] = {
185 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
186 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
187 { NULL, -1, 0},
188};
189
190static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
191 { "off", 0, 0},
192 { "on", 1, BOND_VALFLAG_DEFAULT},
193 { NULL, -1, 0}
194};
195
196static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
197 { "minval", 1, BOND_VALFLAG_MIN},
198 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
199 { NULL, -1, 0},
200};
201
202static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
203 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
204 { "maxval", 1023, BOND_VALFLAG_MAX},
205 { NULL, -1, 0},
206};
207
208static const struct bond_option bond_opts[BOND_OPT_LAST] = {
209 [BOND_OPT_MODE] = {
210 .id = BOND_OPT_MODE,
211 .name = "mode",
212 .desc = "bond device mode",
213 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
214 .values = bond_mode_tbl,
215 .set = bond_option_mode_set
216 },
217 [BOND_OPT_PACKETS_PER_SLAVE] = {
218 .id = BOND_OPT_PACKETS_PER_SLAVE,
219 .name = "packets_per_slave",
220 .desc = "Packets to send per slave in RR mode",
221 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
222 .values = bond_pps_tbl,
223 .set = bond_option_pps_set
224 },
225 [BOND_OPT_XMIT_HASH] = {
226 .id = BOND_OPT_XMIT_HASH,
227 .name = "xmit_hash_policy",
228 .desc = "balance-xor, 802.3ad, and tlb hashing method",
229 .values = bond_xmit_hashtype_tbl,
230 .set = bond_option_xmit_hash_policy_set
231 },
232 [BOND_OPT_ARP_VALIDATE] = {
233 .id = BOND_OPT_ARP_VALIDATE,
234 .name = "arp_validate",
235 .desc = "validate src/dst of ARP probes",
236 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
237 BIT(BOND_MODE_ALB),
238 .values = bond_arp_validate_tbl,
239 .set = bond_option_arp_validate_set
240 },
241 [BOND_OPT_ARP_ALL_TARGETS] = {
242 .id = BOND_OPT_ARP_ALL_TARGETS,
243 .name = "arp_all_targets",
244 .desc = "fail on any/all arp targets timeout",
245 .values = bond_arp_all_targets_tbl,
246 .set = bond_option_arp_all_targets_set
247 },
248 [BOND_OPT_FAIL_OVER_MAC] = {
249 .id = BOND_OPT_FAIL_OVER_MAC,
250 .name = "fail_over_mac",
251 .desc = "For active-backup, do not set all slaves to the same MAC",
252 .flags = BOND_OPTFLAG_NOSLAVES,
253 .values = bond_fail_over_mac_tbl,
254 .set = bond_option_fail_over_mac_set
255 },
256 [BOND_OPT_ARP_INTERVAL] = {
257 .id = BOND_OPT_ARP_INTERVAL,
258 .name = "arp_interval",
259 .desc = "arp interval in milliseconds",
260 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
261 BIT(BOND_MODE_ALB),
262 .values = bond_intmax_tbl,
263 .set = bond_option_arp_interval_set
264 },
265 [BOND_OPT_ARP_TARGETS] = {
266 .id = BOND_OPT_ARP_TARGETS,
267 .name = "arp_ip_target",
268 .desc = "arp targets in n.n.n.n form",
269 .flags = BOND_OPTFLAG_RAWVAL,
270 .set = bond_option_arp_ip_targets_set
271 },
272 [BOND_OPT_DOWNDELAY] = {
273 .id = BOND_OPT_DOWNDELAY,
274 .name = "downdelay",
275 .desc = "Delay before considering link down, in milliseconds",
276 .values = bond_intmax_tbl,
277 .set = bond_option_downdelay_set
278 },
279 [BOND_OPT_UPDELAY] = {
280 .id = BOND_OPT_UPDELAY,
281 .name = "updelay",
282 .desc = "Delay before considering link up, in milliseconds",
283 .values = bond_intmax_tbl,
284 .set = bond_option_updelay_set
285 },
286 [BOND_OPT_LACP_RATE] = {
287 .id = BOND_OPT_LACP_RATE,
288 .name = "lacp_rate",
289 .desc = "LACPDU tx rate to request from 802.3ad partner",
290 .flags = BOND_OPTFLAG_IFDOWN,
291 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
292 .values = bond_lacp_rate_tbl,
293 .set = bond_option_lacp_rate_set
294 },
295 [BOND_OPT_MINLINKS] = {
296 .id = BOND_OPT_MINLINKS,
297 .name = "min_links",
298 .desc = "Minimum number of available links before turning on carrier",
299 .values = bond_intmax_tbl,
300 .set = bond_option_min_links_set
301 },
302 [BOND_OPT_AD_SELECT] = {
303 .id = BOND_OPT_AD_SELECT,
304 .name = "ad_select",
305 .desc = "803.ad aggregation selection logic",
306 .flags = BOND_OPTFLAG_IFDOWN,
307 .values = bond_ad_select_tbl,
308 .set = bond_option_ad_select_set
309 },
310 [BOND_OPT_NUM_PEER_NOTIF] = {
311 .id = BOND_OPT_NUM_PEER_NOTIF,
312 .name = "num_unsol_na",
313 .desc = "Number of peer notifications to send on failover event",
314 .values = bond_num_peer_notif_tbl,
315 .set = bond_option_num_peer_notif_set
316 },
317 [BOND_OPT_MIIMON] = {
318 .id = BOND_OPT_MIIMON,
319 .name = "miimon",
320 .desc = "Link check interval in milliseconds",
321 .values = bond_intmax_tbl,
322 .set = bond_option_miimon_set
323 },
324 [BOND_OPT_PRIMARY] = {
325 .id = BOND_OPT_PRIMARY,
326 .name = "primary",
327 .desc = "Primary network device to use",
328 .flags = BOND_OPTFLAG_RAWVAL,
329 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
330 BIT(BOND_MODE_TLB) |
331 BIT(BOND_MODE_ALB)),
332 .set = bond_option_primary_set
333 },
334 [BOND_OPT_PRIMARY_RESELECT] = {
335 .id = BOND_OPT_PRIMARY_RESELECT,
336 .name = "primary_reselect",
337 .desc = "Reselect primary slave once it comes up",
338 .values = bond_primary_reselect_tbl,
339 .set = bond_option_primary_reselect_set
340 },
341 [BOND_OPT_USE_CARRIER] = {
342 .id = BOND_OPT_USE_CARRIER,
343 .name = "use_carrier",
344 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
345 .values = bond_use_carrier_tbl,
346 .set = bond_option_use_carrier_set
347 },
348 [BOND_OPT_ACTIVE_SLAVE] = {
349 .id = BOND_OPT_ACTIVE_SLAVE,
350 .name = "active_slave",
351 .desc = "Currently active slave",
352 .flags = BOND_OPTFLAG_RAWVAL,
353 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
354 BIT(BOND_MODE_TLB) |
355 BIT(BOND_MODE_ALB)),
356 .set = bond_option_active_slave_set
357 },
358 [BOND_OPT_QUEUE_ID] = {
359 .id = BOND_OPT_QUEUE_ID,
360 .name = "queue_id",
361 .desc = "Set queue id of a slave",
362 .flags = BOND_OPTFLAG_RAWVAL,
363 .set = bond_option_queue_id_set
364 },
365 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
366 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
367 .name = "all_slaves_active",
368 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
369 .values = bond_all_slaves_active_tbl,
370 .set = bond_option_all_slaves_active_set
371 },
372 [BOND_OPT_RESEND_IGMP] = {
373 .id = BOND_OPT_RESEND_IGMP,
374 .name = "resend_igmp",
375 .desc = "Number of IGMP membership reports to send on link failure",
376 .values = bond_resend_igmp_tbl,
377 .set = bond_option_resend_igmp_set
378 },
379 [BOND_OPT_LP_INTERVAL] = {
380 .id = BOND_OPT_LP_INTERVAL,
381 .name = "lp_interval",
382 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
383 .values = bond_lp_interval_tbl,
384 .set = bond_option_lp_interval_set
385 },
386 [BOND_OPT_SLAVES] = {
387 .id = BOND_OPT_SLAVES,
388 .name = "slaves",
389 .desc = "Slave membership management",
390 .flags = BOND_OPTFLAG_RAWVAL,
391 .set = bond_option_slaves_set
392 },
393 [BOND_OPT_TLB_DYNAMIC_LB] = {
394 .id = BOND_OPT_TLB_DYNAMIC_LB,
395 .name = "tlb_dynamic_lb",
396 .desc = "Enable dynamic flow shuffling",
397 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB) | BIT(BOND_MODE_ALB)),
398 .values = bond_tlb_dynamic_lb_tbl,
399 .flags = BOND_OPTFLAG_IFDOWN,
400 .set = bond_option_tlb_dynamic_lb_set,
401 },
402 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
403 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
404 .name = "ad_actor_sys_prio",
405 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
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,
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 [BOND_OPT_PEER_NOTIF_DELAY] = {
432 .id = BOND_OPT_PEER_NOTIF_DELAY,
433 .name = "peer_notif_delay",
434 .desc = "Delay between each peer notification on failover event, in milliseconds",
435 .values = bond_intmax_tbl,
436 .set = bond_option_peer_notif_delay_set
437 }
438};
439
440
441const struct bond_option *bond_opt_get_by_name(const char *name)
442{
443 const struct bond_option *opt;
444 int option;
445
446 for (option = 0; option < BOND_OPT_LAST; option++) {
447 opt = bond_opt_get(option);
448 if (opt && !strcmp(opt->name, name))
449 return opt;
450 }
451
452 return NULL;
453}
454
455
456const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
457{
458 const struct bond_option *opt;
459 int i;
460
461 opt = bond_opt_get(option);
462 if (WARN_ON(!opt))
463 return NULL;
464 for (i = 0; opt->values && opt->values[i].string; i++)
465 if (opt->values[i].value == val)
466 return &opt->values[i];
467
468 return NULL;
469}
470
471
472static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
473 u32 flagmask)
474{
475 int i;
476
477 for (i = 0; opt->values && opt->values[i].string; i++)
478 if (opt->values[i].flags & flagmask)
479 return &opt->values[i];
480
481 return NULL;
482}
483
484
485
486
487static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
488{
489 const struct bond_opt_value *minval, *maxval;
490
491 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
492 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
493 if (!maxval || (minval && val < minval->value) || val > maxval->value)
494 return false;
495
496 return true;
497}
498
499
500
501
502
503
504
505
506
507
508
509const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
510 struct bond_opt_value *val)
511{
512 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
513 const struct bond_opt_value *tbl;
514 const struct bond_opt_value *ret = NULL;
515 bool checkval;
516 int i, rv;
517
518
519 if (opt->flags & BOND_OPTFLAG_RAWVAL)
520 return val;
521
522 tbl = opt->values;
523 if (!tbl)
524 goto out;
525
526
527 checkval = val->value != ULLONG_MAX;
528 if (!checkval) {
529 if (!val->string)
530 goto out;
531 p = strchr(val->string, '\n');
532 if (p)
533 *p = '\0';
534 for (p = val->string; *p; p++)
535 if (!(isdigit(*p) || isspace(*p)))
536 break;
537
538
539
540 if (*p) {
541 rv = sscanf(val->string, "%32s", valstr);
542 } else {
543 rv = sscanf(val->string, "%llu", &val->value);
544 checkval = true;
545 }
546 if (!rv)
547 goto out;
548 }
549
550 for (i = 0; tbl[i].string; i++) {
551
552 if (checkval) {
553 if (val->value == tbl[i].value)
554 ret = &tbl[i];
555 } else {
556 if (!strcmp(valstr, "default") &&
557 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
558 ret = &tbl[i];
559
560 if (!strcmp(valstr, tbl[i].string))
561 ret = &tbl[i];
562 }
563
564 if (ret)
565 goto out;
566 }
567
568 if (checkval && bond_opt_check_range(opt, val->value))
569 ret = val;
570out:
571 return ret;
572}
573
574
575static int bond_opt_check_deps(struct bonding *bond,
576 const struct bond_option *opt)
577{
578 struct bond_params *params = &bond->params;
579
580 if (test_bit(params->mode, &opt->unsuppmodes))
581 return -EACCES;
582 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
583 return -ENOTEMPTY;
584 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
585 return -EBUSY;
586
587 return 0;
588}
589
590static void bond_opt_dep_print(struct bonding *bond,
591 const struct bond_option *opt)
592{
593 const struct bond_opt_value *modeval;
594 struct bond_params *params;
595
596 params = &bond->params;
597 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
598 if (test_bit(params->mode, &opt->unsuppmodes))
599 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
600 opt->name, modeval->string, modeval->value);
601}
602
603static void bond_opt_error_interpret(struct bonding *bond,
604 const struct bond_option *opt,
605 int error, const struct bond_opt_value *val)
606{
607 const struct bond_opt_value *minval, *maxval;
608 char *p;
609
610 switch (error) {
611 case -EINVAL:
612 if (val) {
613 if (val->string) {
614
615 p = strchr(val->string, '\n');
616 if (p)
617 *p = '\0';
618 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
619 opt->name, val->string);
620 } else {
621 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
622 opt->name, val->value);
623 }
624 }
625 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
626 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
627 if (!maxval)
628 break;
629 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
630 opt->name, minval ? minval->value : 0, maxval->value);
631 break;
632 case -EACCES:
633 bond_opt_dep_print(bond, opt);
634 break;
635 case -ENOTEMPTY:
636 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
637 opt->name);
638 break;
639 case -EBUSY:
640 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
641 opt->name);
642 break;
643 case -ENODEV:
644 if (val && val->string) {
645 p = strchr(val->string, '\n');
646 if (p)
647 *p = '\0';
648 netdev_err(bond->dev, "option %s: interface %s does not exist!\n",
649 opt->name, val->string);
650 }
651 break;
652 default:
653 break;
654 }
655}
656
657
658
659
660
661
662
663
664
665
666
667int __bond_opt_set(struct bonding *bond,
668 unsigned int option, struct bond_opt_value *val)
669{
670 const struct bond_opt_value *retval = NULL;
671 const struct bond_option *opt;
672 int ret = -ENOENT;
673
674 ASSERT_RTNL();
675
676 opt = bond_opt_get(option);
677 if (WARN_ON(!val) || WARN_ON(!opt))
678 goto out;
679 ret = bond_opt_check_deps(bond, opt);
680 if (ret)
681 goto out;
682 retval = bond_opt_parse(opt, val);
683 if (!retval) {
684 ret = -EINVAL;
685 goto out;
686 }
687 ret = opt->set(bond, retval);
688out:
689 if (ret)
690 bond_opt_error_interpret(bond, opt, ret, val);
691
692 return ret;
693}
694
695
696
697
698
699
700
701
702
703
704
705int __bond_opt_set_notify(struct bonding *bond,
706 unsigned int option, struct bond_opt_value *val)
707{
708 int ret = -ENOENT;
709
710 ASSERT_RTNL();
711
712 ret = __bond_opt_set(bond, option, val);
713
714 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
715 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
716
717 return ret;
718}
719
720
721
722
723
724
725
726
727
728
729int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
730{
731 struct bond_opt_value optval;
732 int ret;
733
734 if (!rtnl_trylock())
735 return restart_syscall();
736 bond_opt_initstr(&optval, buf);
737 ret = __bond_opt_set_notify(bond, option, &optval);
738 rtnl_unlock();
739
740 return ret;
741}
742
743
744
745
746
747
748
749
750const struct bond_option *bond_opt_get(unsigned int option)
751{
752 if (!BOND_OPT_VALID(option))
753 return NULL;
754
755 return &bond_opts[option];
756}
757
758static bool bond_set_xfrm_features(struct bonding *bond)
759{
760 if (!IS_ENABLED(CONFIG_XFRM_OFFLOAD))
761 return false;
762
763 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
764 bond->dev->wanted_features |= BOND_XFRM_FEATURES;
765 else
766 bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
767
768 return true;
769}
770
771static bool bond_set_tls_features(struct bonding *bond)
772{
773 if (!IS_ENABLED(CONFIG_TLS_DEVICE))
774 return false;
775
776 if (bond_sk_check(bond))
777 bond->dev->wanted_features |= BOND_TLS_FEATURES;
778 else
779 bond->dev->wanted_features &= ~BOND_TLS_FEATURES;
780
781 return true;
782}
783
784static int bond_option_mode_set(struct bonding *bond,
785 const struct bond_opt_value *newval)
786{
787 if (!bond_mode_uses_arp(newval->value)) {
788 if (bond->params.arp_interval) {
789 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
790 newval->string);
791
792 bond->params.arp_interval = 0;
793 }
794
795 if (!bond->params.miimon) {
796
797 bond->params.miimon = BOND_DEFAULT_MIIMON;
798 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n",
799 bond->params.miimon);
800 }
801 }
802
803 if (newval->value == BOND_MODE_ALB)
804 bond->params.tlb_dynamic_lb = 1;
805
806
807 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
808 bond->params.mode = newval->value;
809
810 if (bond->dev->reg_state == NETREG_REGISTERED) {
811 bool update = false;
812
813 update |= bond_set_xfrm_features(bond);
814 update |= bond_set_tls_features(bond);
815
816 if (update)
817 netdev_update_features(bond->dev);
818 }
819
820 return 0;
821}
822
823static int bond_option_active_slave_set(struct bonding *bond,
824 const struct bond_opt_value *newval)
825{
826 char ifname[IFNAMSIZ] = { 0, };
827 struct net_device *slave_dev;
828 int ret = 0;
829
830 sscanf(newval->string, "%15s", ifname);
831 if (!strlen(ifname) || newval->string[0] == '\n') {
832 slave_dev = NULL;
833 } else {
834 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
835 if (!slave_dev)
836 return -ENODEV;
837 }
838
839 if (slave_dev) {
840 if (!netif_is_bond_slave(slave_dev)) {
841 slave_err(bond->dev, slave_dev, "Device is not bonding slave\n");
842 return -EINVAL;
843 }
844
845 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
846 slave_err(bond->dev, slave_dev, "Device is not our slave\n");
847 return -EINVAL;
848 }
849 }
850
851 block_netpoll_tx();
852
853 if (!slave_dev) {
854 netdev_dbg(bond->dev, "Clearing current active slave\n");
855 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
856 bond_select_active_slave(bond);
857 } else {
858 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
859 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
860
861 BUG_ON(!new_active);
862
863 if (new_active == old_active) {
864
865 slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n");
866 } else {
867 if (old_active && (new_active->link == BOND_LINK_UP) &&
868 bond_slave_is_up(new_active)) {
869 slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n");
870 bond_change_active_slave(bond, new_active);
871 } else {
872 slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n",
873 new_active->dev->name);
874 ret = -EINVAL;
875 }
876 }
877 }
878 unblock_netpoll_tx();
879
880 return ret;
881}
882
883
884
885
886
887static int bond_option_miimon_set(struct bonding *bond,
888 const struct bond_opt_value *newval)
889{
890 netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n",
891 newval->value);
892 bond->params.miimon = newval->value;
893 if (bond->params.updelay)
894 netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
895 bond->params.updelay * bond->params.miimon);
896 if (bond->params.downdelay)
897 netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
898 bond->params.downdelay * bond->params.miimon);
899 if (bond->params.peer_notif_delay)
900 netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n",
901 bond->params.peer_notif_delay * bond->params.miimon);
902 if (newval->value && bond->params.arp_interval) {
903 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
904 bond->params.arp_interval = 0;
905 if (bond->params.arp_validate)
906 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
907 }
908 if (bond->dev->flags & IFF_UP) {
909
910
911
912
913
914 if (!newval->value) {
915 cancel_delayed_work_sync(&bond->mii_work);
916 } else {
917 cancel_delayed_work_sync(&bond->arp_work);
918 queue_delayed_work(bond->wq, &bond->mii_work, 0);
919 }
920 }
921
922 return 0;
923}
924
925
926
927
928
929static int _bond_option_delay_set(struct bonding *bond,
930 const struct bond_opt_value *newval,
931 const char *name,
932 int *target)
933{
934 int value = newval->value;
935
936 if (!bond->params.miimon) {
937 netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n",
938 name);
939 return -EPERM;
940 }
941 if ((value % bond->params.miimon) != 0) {
942 netdev_warn(bond->dev,
943 "%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n",
944 name,
945 value, bond->params.miimon,
946 (value / bond->params.miimon) *
947 bond->params.miimon);
948 }
949 *target = value / bond->params.miimon;
950 netdev_dbg(bond->dev, "Setting %s to %d\n",
951 name,
952 *target * bond->params.miimon);
953
954 return 0;
955}
956
957static int bond_option_updelay_set(struct bonding *bond,
958 const struct bond_opt_value *newval)
959{
960 return _bond_option_delay_set(bond, newval, "up delay",
961 &bond->params.updelay);
962}
963
964static int bond_option_downdelay_set(struct bonding *bond,
965 const struct bond_opt_value *newval)
966{
967 return _bond_option_delay_set(bond, newval, "down delay",
968 &bond->params.downdelay);
969}
970
971static int bond_option_peer_notif_delay_set(struct bonding *bond,
972 const struct bond_opt_value *newval)
973{
974 int ret = _bond_option_delay_set(bond, newval,
975 "peer notification delay",
976 &bond->params.peer_notif_delay);
977 return ret;
978}
979
980static int bond_option_use_carrier_set(struct bonding *bond,
981 const struct bond_opt_value *newval)
982{
983 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n",
984 newval->value);
985 bond->params.use_carrier = newval->value;
986
987 return 0;
988}
989
990
991
992
993
994static int bond_option_arp_interval_set(struct bonding *bond,
995 const struct bond_opt_value *newval)
996{
997 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n",
998 newval->value);
999 bond->params.arp_interval = newval->value;
1000 if (newval->value) {
1001 if (bond->params.miimon) {
1002 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
1003 bond->params.miimon = 0;
1004 }
1005 if (!bond->params.arp_targets[0])
1006 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
1007 }
1008 if (bond->dev->flags & IFF_UP) {
1009
1010
1011
1012
1013
1014 if (!newval->value) {
1015 if (bond->params.arp_validate)
1016 bond->recv_probe = NULL;
1017 cancel_delayed_work_sync(&bond->arp_work);
1018 } else {
1019
1020 bond->recv_probe = bond_arp_rcv;
1021 cancel_delayed_work_sync(&bond->mii_work);
1022 queue_delayed_work(bond->wq, &bond->arp_work, 0);
1023 }
1024 }
1025
1026 return 0;
1027}
1028
1029static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
1030 __be32 target,
1031 unsigned long last_rx)
1032{
1033 __be32 *targets = bond->params.arp_targets;
1034 struct list_head *iter;
1035 struct slave *slave;
1036
1037 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
1038 bond_for_each_slave(bond, slave, iter)
1039 slave->target_last_arp_rx[slot] = last_rx;
1040 targets[slot] = target;
1041 }
1042}
1043
1044static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1045{
1046 __be32 *targets = bond->params.arp_targets;
1047 int ind;
1048
1049 if (!bond_is_ip_target_ok(target)) {
1050 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
1051 &target);
1052 return -EINVAL;
1053 }
1054
1055 if (bond_get_targets_ip(targets, target) != -1) {
1056 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
1057 &target);
1058 return -EINVAL;
1059 }
1060
1061 ind = bond_get_targets_ip(targets, 0);
1062 if (ind == -1) {
1063 netdev_err(bond->dev, "ARP target table is full!\n");
1064 return -EINVAL;
1065 }
1066
1067 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
1068
1069 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
1070
1071 return 0;
1072}
1073
1074static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1075{
1076 return _bond_option_arp_ip_target_add(bond, target);
1077}
1078
1079static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
1080{
1081 __be32 *targets = bond->params.arp_targets;
1082 struct list_head *iter;
1083 struct slave *slave;
1084 unsigned long *targets_rx;
1085 int ind, i;
1086
1087 if (!bond_is_ip_target_ok(target)) {
1088 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1089 &target);
1090 return -EINVAL;
1091 }
1092
1093 ind = bond_get_targets_ip(targets, target);
1094 if (ind == -1) {
1095 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1096 &target);
1097 return -EINVAL;
1098 }
1099
1100 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1101 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1102
1103 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
1104
1105 bond_for_each_slave(bond, slave, iter) {
1106 targets_rx = slave->target_last_arp_rx;
1107 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1108 targets_rx[i] = targets_rx[i+1];
1109 targets_rx[i] = 0;
1110 }
1111 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1112 targets[i] = targets[i+1];
1113 targets[i] = 0;
1114
1115 return 0;
1116}
1117
1118void bond_option_arp_ip_targets_clear(struct bonding *bond)
1119{
1120 int i;
1121
1122 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1123 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1124}
1125
1126static int bond_option_arp_ip_targets_set(struct bonding *bond,
1127 const struct bond_opt_value *newval)
1128{
1129 int ret = -EPERM;
1130 __be32 target;
1131
1132 if (newval->string) {
1133 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
1134 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1135 &target);
1136 return ret;
1137 }
1138 if (newval->string[0] == '+')
1139 ret = bond_option_arp_ip_target_add(bond, target);
1140 else if (newval->string[0] == '-')
1141 ret = bond_option_arp_ip_target_rem(bond, target);
1142 else
1143 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1144 } else {
1145 target = newval->value;
1146 ret = bond_option_arp_ip_target_add(bond, target);
1147 }
1148
1149 return ret;
1150}
1151
1152static int bond_option_arp_validate_set(struct bonding *bond,
1153 const struct bond_opt_value *newval)
1154{
1155 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n",
1156 newval->string, newval->value);
1157 bond->params.arp_validate = newval->value;
1158
1159 return 0;
1160}
1161
1162static int bond_option_arp_all_targets_set(struct bonding *bond,
1163 const struct bond_opt_value *newval)
1164{
1165 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1166 newval->string, newval->value);
1167 bond->params.arp_all_targets = newval->value;
1168
1169 return 0;
1170}
1171
1172static int bond_option_primary_set(struct bonding *bond,
1173 const struct bond_opt_value *newval)
1174{
1175 char *p, *primary = newval->string;
1176 struct list_head *iter;
1177 struct slave *slave;
1178
1179 block_netpoll_tx();
1180
1181 p = strchr(primary, '\n');
1182 if (p)
1183 *p = '\0';
1184
1185 if (!strlen(primary)) {
1186 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1187 RCU_INIT_POINTER(bond->primary_slave, NULL);
1188 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1189 bond_select_active_slave(bond);
1190 goto out;
1191 }
1192
1193 bond_for_each_slave(bond, slave, iter) {
1194 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1195 slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n");
1196 rcu_assign_pointer(bond->primary_slave, slave);
1197 strcpy(bond->params.primary, slave->dev->name);
1198 bond->force_primary = true;
1199 bond_select_active_slave(bond);
1200 goto out;
1201 }
1202 }
1203
1204 if (rtnl_dereference(bond->primary_slave)) {
1205 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1206 RCU_INIT_POINTER(bond->primary_slave, NULL);
1207 bond_select_active_slave(bond);
1208 }
1209 strncpy(bond->params.primary, primary, IFNAMSIZ);
1210 bond->params.primary[IFNAMSIZ - 1] = 0;
1211
1212 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n",
1213 primary);
1214
1215out:
1216 unblock_netpoll_tx();
1217
1218 return 0;
1219}
1220
1221static int bond_option_primary_reselect_set(struct bonding *bond,
1222 const struct bond_opt_value *newval)
1223{
1224 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1225 newval->string, newval->value);
1226 bond->params.primary_reselect = newval->value;
1227
1228 block_netpoll_tx();
1229 bond_select_active_slave(bond);
1230 unblock_netpoll_tx();
1231
1232 return 0;
1233}
1234
1235static int bond_option_fail_over_mac_set(struct bonding *bond,
1236 const struct bond_opt_value *newval)
1237{
1238 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1239 newval->string, newval->value);
1240 bond->params.fail_over_mac = newval->value;
1241
1242 return 0;
1243}
1244
1245static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1246 const struct bond_opt_value *newval)
1247{
1248 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1249 newval->string, newval->value);
1250 bond->params.xmit_policy = newval->value;
1251
1252 if (bond->dev->reg_state == NETREG_REGISTERED)
1253 if (bond_set_tls_features(bond))
1254 netdev_update_features(bond->dev);
1255
1256 return 0;
1257}
1258
1259static int bond_option_resend_igmp_set(struct bonding *bond,
1260 const struct bond_opt_value *newval)
1261{
1262 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n",
1263 newval->value);
1264 bond->params.resend_igmp = newval->value;
1265
1266 return 0;
1267}
1268
1269static int bond_option_num_peer_notif_set(struct bonding *bond,
1270 const struct bond_opt_value *newval)
1271{
1272 bond->params.num_peer_notif = newval->value;
1273
1274 return 0;
1275}
1276
1277static int bond_option_all_slaves_active_set(struct bonding *bond,
1278 const struct bond_opt_value *newval)
1279{
1280 struct list_head *iter;
1281 struct slave *slave;
1282
1283 if (newval->value == bond->params.all_slaves_active)
1284 return 0;
1285 bond->params.all_slaves_active = newval->value;
1286 bond_for_each_slave(bond, slave, iter) {
1287 if (!bond_is_active_slave(slave)) {
1288 if (newval->value)
1289 slave->inactive = 0;
1290 else
1291 slave->inactive = 1;
1292 }
1293 }
1294
1295 return 0;
1296}
1297
1298static int bond_option_min_links_set(struct bonding *bond,
1299 const struct bond_opt_value *newval)
1300{
1301 netdev_dbg(bond->dev, "Setting min links value to %llu\n",
1302 newval->value);
1303 bond->params.min_links = newval->value;
1304 bond_set_carrier(bond);
1305
1306 return 0;
1307}
1308
1309static int bond_option_lp_interval_set(struct bonding *bond,
1310 const struct bond_opt_value *newval)
1311{
1312 bond->params.lp_interval = newval->value;
1313
1314 return 0;
1315}
1316
1317static int bond_option_pps_set(struct bonding *bond,
1318 const struct bond_opt_value *newval)
1319{
1320 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n",
1321 newval->value);
1322 bond->params.packets_per_slave = newval->value;
1323 if (newval->value > 0) {
1324 bond->params.reciprocal_packets_per_slave =
1325 reciprocal_value(newval->value);
1326 } else {
1327
1328
1329
1330 bond->params.reciprocal_packets_per_slave =
1331 (struct reciprocal_value) { 0 };
1332 }
1333
1334 return 0;
1335}
1336
1337static int bond_option_lacp_rate_set(struct bonding *bond,
1338 const struct bond_opt_value *newval)
1339{
1340 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n",
1341 newval->string, newval->value);
1342 bond->params.lacp_fast = newval->value;
1343 bond_3ad_update_lacp_rate(bond);
1344
1345 return 0;
1346}
1347
1348static int bond_option_ad_select_set(struct bonding *bond,
1349 const struct bond_opt_value *newval)
1350{
1351 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n",
1352 newval->string, newval->value);
1353 bond->params.ad_select = newval->value;
1354
1355 return 0;
1356}
1357
1358static int bond_option_queue_id_set(struct bonding *bond,
1359 const struct bond_opt_value *newval)
1360{
1361 struct slave *slave, *update_slave;
1362 struct net_device *sdev;
1363 struct list_head *iter;
1364 char *delim;
1365 int ret = 0;
1366 u16 qid;
1367
1368
1369 delim = strchr(newval->string, ':');
1370 if (!delim)
1371 goto err_no_cmd;
1372
1373
1374
1375
1376 *delim = '\0';
1377 if (sscanf(++delim, "%hd\n", &qid) != 1)
1378 goto err_no_cmd;
1379
1380
1381 if (!dev_valid_name(newval->string) ||
1382 qid > bond->dev->real_num_tx_queues)
1383 goto err_no_cmd;
1384
1385
1386 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1387 if (!sdev)
1388 goto err_no_cmd;
1389
1390
1391 update_slave = NULL;
1392 bond_for_each_slave(bond, slave, iter) {
1393 if (sdev == slave->dev)
1394
1395
1396
1397 update_slave = slave;
1398 else if (qid && qid == slave->queue_id) {
1399 goto err_no_cmd;
1400 }
1401 }
1402
1403 if (!update_slave)
1404 goto err_no_cmd;
1405
1406
1407 update_slave->queue_id = qid;
1408
1409out:
1410 return ret;
1411
1412err_no_cmd:
1413 netdev_dbg(bond->dev, "invalid input for queue_id set\n");
1414 ret = -EPERM;
1415 goto out;
1416
1417}
1418
1419static int bond_option_slaves_set(struct bonding *bond,
1420 const struct bond_opt_value *newval)
1421{
1422 char command[IFNAMSIZ + 1] = { 0, };
1423 struct net_device *dev;
1424 char *ifname;
1425 int ret;
1426
1427 sscanf(newval->string, "%16s", command);
1428 ifname = command + 1;
1429 if ((strlen(command) <= 1) ||
1430 (command[0] != '+' && command[0] != '-') ||
1431 !dev_valid_name(ifname))
1432 goto err_no_cmd;
1433
1434 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1435 if (!dev) {
1436 netdev_dbg(bond->dev, "interface %s does not exist!\n",
1437 ifname);
1438 ret = -ENODEV;
1439 goto out;
1440 }
1441
1442 switch (command[0]) {
1443 case '+':
1444 slave_dbg(bond->dev, dev, "Enslaving interface\n");
1445 ret = bond_enslave(bond->dev, dev, NULL);
1446 break;
1447
1448 case '-':
1449 slave_dbg(bond->dev, dev, "Releasing interface\n");
1450 ret = bond_release(bond->dev, dev);
1451 break;
1452
1453 default:
1454
1455 goto err_no_cmd;
1456 }
1457
1458out:
1459 return ret;
1460
1461err_no_cmd:
1462 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1463 ret = -EPERM;
1464 goto out;
1465}
1466
1467static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1468 const struct bond_opt_value *newval)
1469{
1470 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1471 newval->string, newval->value);
1472 bond->params.tlb_dynamic_lb = newval->value;
1473
1474 return 0;
1475}
1476
1477static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1478 const struct bond_opt_value *newval)
1479{
1480 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1481 newval->value);
1482
1483 bond->params.ad_actor_sys_prio = newval->value;
1484 bond_3ad_update_ad_actor_settings(bond);
1485
1486 return 0;
1487}
1488
1489static int bond_option_ad_actor_system_set(struct bonding *bond,
1490 const struct bond_opt_value *newval)
1491{
1492 u8 macaddr[ETH_ALEN];
1493 u8 *mac;
1494
1495 if (newval->string) {
1496 if (!mac_pton(newval->string, macaddr))
1497 goto err;
1498 mac = macaddr;
1499 } else {
1500 mac = (u8 *)&newval->value;
1501 }
1502
1503 if (!is_valid_ether_addr(mac))
1504 goto err;
1505
1506 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1507 ether_addr_copy(bond->params.ad_actor_system, mac);
1508 bond_3ad_update_ad_actor_settings(bond);
1509
1510 return 0;
1511
1512err:
1513 netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n");
1514 return -EINVAL;
1515}
1516
1517static int bond_option_ad_user_port_key_set(struct bonding *bond,
1518 const struct bond_opt_value *newval)
1519{
1520 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n",
1521 newval->value);
1522
1523 bond->params.ad_user_port_key = newval->value;
1524 return 0;
1525}
1526