1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * drivers/net/bond/bond_options.c - bonding options
4 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
5 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
8 #include <linux/errno.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>
17 #include <net/bonding.h>
19 static int bond_option_active_slave_set(struct bonding *bond,
20 const struct bond_opt_value *newval);
21 static int bond_option_miimon_set(struct bonding *bond,
22 const struct bond_opt_value *newval);
23 static int bond_option_updelay_set(struct bonding *bond,
24 const struct bond_opt_value *newval);
25 static int bond_option_downdelay_set(struct bonding *bond,
26 const struct bond_opt_value *newval);
27 static int bond_option_peer_notif_delay_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_ns_ip6_targets_set(struct bonding *bond,
38 const struct bond_opt_value *newval);
39 static int bond_option_arp_validate_set(struct bonding *bond,
40 const struct bond_opt_value *newval);
41 static int bond_option_arp_all_targets_set(struct bonding *bond,
42 const struct bond_opt_value *newval);
43 static int bond_option_prio_set(struct bonding *bond,
44 const struct bond_opt_value *newval);
45 static int bond_option_primary_set(struct bonding *bond,
46 const struct bond_opt_value *newval);
47 static int bond_option_primary_reselect_set(struct bonding *bond,
48 const struct bond_opt_value *newval);
49 static int bond_option_fail_over_mac_set(struct bonding *bond,
50 const struct bond_opt_value *newval);
51 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
52 const struct bond_opt_value *newval);
53 static int bond_option_resend_igmp_set(struct bonding *bond,
54 const struct bond_opt_value *newval);
55 static int bond_option_num_peer_notif_set(struct bonding *bond,
56 const struct bond_opt_value *newval);
57 static int bond_option_all_slaves_active_set(struct bonding *bond,
58 const struct bond_opt_value *newval);
59 static int bond_option_min_links_set(struct bonding *bond,
60 const struct bond_opt_value *newval);
61 static int bond_option_lp_interval_set(struct bonding *bond,
62 const struct bond_opt_value *newval);
63 static int bond_option_pps_set(struct bonding *bond,
64 const struct bond_opt_value *newval);
65 static int bond_option_lacp_active_set(struct bonding *bond,
66 const struct bond_opt_value *newval);
67 static int bond_option_lacp_rate_set(struct bonding *bond,
68 const struct bond_opt_value *newval);
69 static int bond_option_ad_select_set(struct bonding *bond,
70 const struct bond_opt_value *newval);
71 static int bond_option_queue_id_set(struct bonding *bond,
72 const struct bond_opt_value *newval);
73 static int bond_option_mode_set(struct bonding *bond,
74 const struct bond_opt_value *newval);
75 static int bond_option_slaves_set(struct bonding *bond,
76 const struct bond_opt_value *newval);
77 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
78 const struct bond_opt_value *newval);
79 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
80 const struct bond_opt_value *newval);
81 static int bond_option_ad_actor_system_set(struct bonding *bond,
82 const struct bond_opt_value *newval);
83 static int bond_option_ad_user_port_key_set(struct bonding *bond,
84 const struct bond_opt_value *newval);
85 static int bond_option_missed_max_set(struct bonding *bond,
86 const struct bond_opt_value *newval);
89 static const struct bond_opt_value bond_mode_tbl[] = {
90 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
91 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
92 { "balance-xor", BOND_MODE_XOR, 0},
93 { "broadcast", BOND_MODE_BROADCAST, 0},
94 { "802.3ad", BOND_MODE_8023AD, 0},
95 { "balance-tlb", BOND_MODE_TLB, 0},
96 { "balance-alb", BOND_MODE_ALB, 0},
100 static const struct bond_opt_value bond_pps_tbl[] = {
101 { "default", 1, BOND_VALFLAG_DEFAULT},
102 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
106 static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
107 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
108 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
109 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
110 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
111 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
112 { "vlan+srcmac", BOND_XMIT_POLICY_VLAN_SRCMAC, 0},
116 static const struct bond_opt_value bond_arp_validate_tbl[] = {
117 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
118 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
119 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
120 { "all", BOND_ARP_VALIDATE_ALL, 0},
121 { "filter", BOND_ARP_FILTER, 0},
122 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
123 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
127 static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
128 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
129 { "all", BOND_ARP_TARGETS_ALL, 0},
133 static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
134 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
135 { "active", BOND_FOM_ACTIVE, 0},
136 { "follow", BOND_FOM_FOLLOW, 0},
140 static const struct bond_opt_value bond_intmax_tbl[] = {
141 { "off", 0, BOND_VALFLAG_DEFAULT},
142 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
146 static const struct bond_opt_value bond_lacp_active[] = {
148 { "on", 1, BOND_VALFLAG_DEFAULT},
152 static const struct bond_opt_value bond_lacp_rate_tbl[] = {
153 { "slow", AD_LACP_SLOW, 0},
154 { "fast", AD_LACP_FAST, 0},
158 static const struct bond_opt_value bond_ad_select_tbl[] = {
159 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
160 { "bandwidth", BOND_AD_BANDWIDTH, 0},
161 { "count", BOND_AD_COUNT, 0},
165 static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
167 { "maxval", 255, BOND_VALFLAG_MAX},
168 { "default", 1, BOND_VALFLAG_DEFAULT},
172 static const struct bond_opt_value bond_primary_reselect_tbl[] = {
173 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
174 { "better", BOND_PRI_RESELECT_BETTER, 0},
175 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
179 static const struct bond_opt_value bond_use_carrier_tbl[] = {
181 { "on", 1, BOND_VALFLAG_DEFAULT},
185 static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
186 { "off", 0, BOND_VALFLAG_DEFAULT},
191 static const struct bond_opt_value bond_resend_igmp_tbl[] = {
193 { "maxval", 255, BOND_VALFLAG_MAX},
194 { "default", 1, BOND_VALFLAG_DEFAULT},
198 static const struct bond_opt_value bond_lp_interval_tbl[] = {
199 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
200 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
204 static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
206 { "on", 1, BOND_VALFLAG_DEFAULT},
210 static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
211 { "minval", 1, BOND_VALFLAG_MIN},
212 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
216 static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
217 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
218 { "maxval", 1023, BOND_VALFLAG_MAX},
222 static const struct bond_opt_value bond_missed_max_tbl[] = {
223 { "minval", 1, BOND_VALFLAG_MIN},
224 { "maxval", 255, BOND_VALFLAG_MAX},
225 { "default", 2, BOND_VALFLAG_DEFAULT},
229 static const struct bond_option bond_opts[BOND_OPT_LAST] = {
233 .desc = "bond device mode",
234 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
235 .values = bond_mode_tbl,
236 .set = bond_option_mode_set
238 [BOND_OPT_PACKETS_PER_SLAVE] = {
239 .id = BOND_OPT_PACKETS_PER_SLAVE,
240 .name = "packets_per_slave",
241 .desc = "Packets to send per slave in RR mode",
242 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
243 .values = bond_pps_tbl,
244 .set = bond_option_pps_set
246 [BOND_OPT_XMIT_HASH] = {
247 .id = BOND_OPT_XMIT_HASH,
248 .name = "xmit_hash_policy",
249 .desc = "balance-xor, 802.3ad, and tlb hashing method",
250 .values = bond_xmit_hashtype_tbl,
251 .set = bond_option_xmit_hash_policy_set
253 [BOND_OPT_ARP_VALIDATE] = {
254 .id = BOND_OPT_ARP_VALIDATE,
255 .name = "arp_validate",
256 .desc = "validate src/dst of ARP probes",
257 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
259 .values = bond_arp_validate_tbl,
260 .set = bond_option_arp_validate_set
262 [BOND_OPT_ARP_ALL_TARGETS] = {
263 .id = BOND_OPT_ARP_ALL_TARGETS,
264 .name = "arp_all_targets",
265 .desc = "fail on any/all arp targets timeout",
266 .values = bond_arp_all_targets_tbl,
267 .set = bond_option_arp_all_targets_set
269 [BOND_OPT_FAIL_OVER_MAC] = {
270 .id = BOND_OPT_FAIL_OVER_MAC,
271 .name = "fail_over_mac",
272 .desc = "For active-backup, do not set all slaves to the same MAC",
273 .flags = BOND_OPTFLAG_NOSLAVES,
274 .values = bond_fail_over_mac_tbl,
275 .set = bond_option_fail_over_mac_set
277 [BOND_OPT_ARP_INTERVAL] = {
278 .id = BOND_OPT_ARP_INTERVAL,
279 .name = "arp_interval",
280 .desc = "arp interval in milliseconds",
281 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
283 .values = bond_intmax_tbl,
284 .set = bond_option_arp_interval_set
286 [BOND_OPT_MISSED_MAX] = {
287 .id = BOND_OPT_MISSED_MAX,
288 .name = "arp_missed_max",
289 .desc = "Maximum number of missed ARP interval",
290 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
292 .values = bond_missed_max_tbl,
293 .set = bond_option_missed_max_set
295 [BOND_OPT_ARP_TARGETS] = {
296 .id = BOND_OPT_ARP_TARGETS,
297 .name = "arp_ip_target",
298 .desc = "arp targets in n.n.n.n form",
299 .flags = BOND_OPTFLAG_RAWVAL,
300 .set = bond_option_arp_ip_targets_set
302 [BOND_OPT_NS_TARGETS] = {
303 .id = BOND_OPT_NS_TARGETS,
304 .name = "ns_ip6_target",
305 .desc = "NS targets in ffff:ffff::ffff:ffff form",
306 .flags = BOND_OPTFLAG_RAWVAL,
307 .set = bond_option_ns_ip6_targets_set
309 [BOND_OPT_DOWNDELAY] = {
310 .id = BOND_OPT_DOWNDELAY,
312 .desc = "Delay before considering link down, in milliseconds",
313 .values = bond_intmax_tbl,
314 .set = bond_option_downdelay_set
316 [BOND_OPT_UPDELAY] = {
317 .id = BOND_OPT_UPDELAY,
319 .desc = "Delay before considering link up, in milliseconds",
320 .values = bond_intmax_tbl,
321 .set = bond_option_updelay_set
323 [BOND_OPT_LACP_ACTIVE] = {
324 .id = BOND_OPT_LACP_ACTIVE,
325 .name = "lacp_active",
326 .desc = "Send LACPDU frames with configured lacp rate or acts as speak when spoken to",
327 .flags = BOND_OPTFLAG_IFDOWN,
328 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
329 .values = bond_lacp_active,
330 .set = bond_option_lacp_active_set
332 [BOND_OPT_LACP_RATE] = {
333 .id = BOND_OPT_LACP_RATE,
335 .desc = "LACPDU tx rate to request from 802.3ad partner",
336 .flags = BOND_OPTFLAG_IFDOWN,
337 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
338 .values = bond_lacp_rate_tbl,
339 .set = bond_option_lacp_rate_set
341 [BOND_OPT_MINLINKS] = {
342 .id = BOND_OPT_MINLINKS,
344 .desc = "Minimum number of available links before turning on carrier",
345 .values = bond_intmax_tbl,
346 .set = bond_option_min_links_set
348 [BOND_OPT_AD_SELECT] = {
349 .id = BOND_OPT_AD_SELECT,
351 .desc = "803.ad aggregation selection logic",
352 .flags = BOND_OPTFLAG_IFDOWN,
353 .values = bond_ad_select_tbl,
354 .set = bond_option_ad_select_set
356 [BOND_OPT_NUM_PEER_NOTIF] = {
357 .id = BOND_OPT_NUM_PEER_NOTIF,
358 .name = "num_unsol_na",
359 .desc = "Number of peer notifications to send on failover event",
360 .values = bond_num_peer_notif_tbl,
361 .set = bond_option_num_peer_notif_set
363 [BOND_OPT_MIIMON] = {
364 .id = BOND_OPT_MIIMON,
366 .desc = "Link check interval in milliseconds",
367 .values = bond_intmax_tbl,
368 .set = bond_option_miimon_set
373 .desc = "Link priority for failover re-selection",
374 .flags = BOND_OPTFLAG_RAWVAL,
375 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
378 .set = bond_option_prio_set
380 [BOND_OPT_PRIMARY] = {
381 .id = BOND_OPT_PRIMARY,
383 .desc = "Primary network device to use",
384 .flags = BOND_OPTFLAG_RAWVAL,
385 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
388 .set = bond_option_primary_set
390 [BOND_OPT_PRIMARY_RESELECT] = {
391 .id = BOND_OPT_PRIMARY_RESELECT,
392 .name = "primary_reselect",
393 .desc = "Reselect primary slave once it comes up",
394 .values = bond_primary_reselect_tbl,
395 .set = bond_option_primary_reselect_set
397 [BOND_OPT_USE_CARRIER] = {
398 .id = BOND_OPT_USE_CARRIER,
399 .name = "use_carrier",
400 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
401 .values = bond_use_carrier_tbl,
402 .set = bond_option_use_carrier_set
404 [BOND_OPT_ACTIVE_SLAVE] = {
405 .id = BOND_OPT_ACTIVE_SLAVE,
406 .name = "active_slave",
407 .desc = "Currently active slave",
408 .flags = BOND_OPTFLAG_RAWVAL,
409 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
412 .set = bond_option_active_slave_set
414 [BOND_OPT_QUEUE_ID] = {
415 .id = BOND_OPT_QUEUE_ID,
417 .desc = "Set queue id of a slave",
418 .flags = BOND_OPTFLAG_RAWVAL,
419 .set = bond_option_queue_id_set
421 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
422 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
423 .name = "all_slaves_active",
424 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
425 .values = bond_all_slaves_active_tbl,
426 .set = bond_option_all_slaves_active_set
428 [BOND_OPT_RESEND_IGMP] = {
429 .id = BOND_OPT_RESEND_IGMP,
430 .name = "resend_igmp",
431 .desc = "Number of IGMP membership reports to send on link failure",
432 .values = bond_resend_igmp_tbl,
433 .set = bond_option_resend_igmp_set
435 [BOND_OPT_LP_INTERVAL] = {
436 .id = BOND_OPT_LP_INTERVAL,
437 .name = "lp_interval",
438 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
439 .values = bond_lp_interval_tbl,
440 .set = bond_option_lp_interval_set
442 [BOND_OPT_SLAVES] = {
443 .id = BOND_OPT_SLAVES,
445 .desc = "Slave membership management",
446 .flags = BOND_OPTFLAG_RAWVAL,
447 .set = bond_option_slaves_set
449 [BOND_OPT_TLB_DYNAMIC_LB] = {
450 .id = BOND_OPT_TLB_DYNAMIC_LB,
451 .name = "tlb_dynamic_lb",
452 .desc = "Enable dynamic flow shuffling",
453 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB) | BIT(BOND_MODE_ALB)),
454 .values = bond_tlb_dynamic_lb_tbl,
455 .flags = BOND_OPTFLAG_IFDOWN,
456 .set = bond_option_tlb_dynamic_lb_set,
458 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
459 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
460 .name = "ad_actor_sys_prio",
461 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
462 .values = bond_ad_actor_sys_prio_tbl,
463 .set = bond_option_ad_actor_sys_prio_set,
465 [BOND_OPT_AD_ACTOR_SYSTEM] = {
466 .id = BOND_OPT_AD_ACTOR_SYSTEM,
467 .name = "ad_actor_system",
468 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
469 .flags = BOND_OPTFLAG_RAWVAL,
470 .set = bond_option_ad_actor_system_set,
472 [BOND_OPT_AD_USER_PORT_KEY] = {
473 .id = BOND_OPT_AD_USER_PORT_KEY,
474 .name = "ad_user_port_key",
475 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
476 .flags = BOND_OPTFLAG_IFDOWN,
477 .values = bond_ad_user_port_key_tbl,
478 .set = bond_option_ad_user_port_key_set,
480 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
481 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
482 .name = "num_grat_arp",
483 .desc = "Number of peer notifications to send on failover event",
484 .values = bond_num_peer_notif_tbl,
485 .set = bond_option_num_peer_notif_set
487 [BOND_OPT_PEER_NOTIF_DELAY] = {
488 .id = BOND_OPT_PEER_NOTIF_DELAY,
489 .name = "peer_notif_delay",
490 .desc = "Delay between each peer notification on failover event, in milliseconds",
491 .values = bond_intmax_tbl,
492 .set = bond_option_peer_notif_delay_set
496 /* Searches for an option by name */
497 const struct bond_option *bond_opt_get_by_name(const char *name)
499 const struct bond_option *opt;
502 for (option = 0; option < BOND_OPT_LAST; option++) {
503 opt = bond_opt_get(option);
504 if (opt && !strcmp(opt->name, name))
511 /* Searches for a value in opt's values[] table */
512 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
514 const struct bond_option *opt;
517 opt = bond_opt_get(option);
520 for (i = 0; opt->values && opt->values[i].string; i++)
521 if (opt->values[i].value == val)
522 return &opt->values[i];
527 /* Searches for a value in opt's values[] table which matches the flagmask */
528 static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
533 for (i = 0; opt->values && opt->values[i].string; i++)
534 if (opt->values[i].flags & flagmask)
535 return &opt->values[i];
540 /* If maxval is missing then there's no range to check. In case minval is
541 * missing then it's considered to be 0.
543 static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
545 const struct bond_opt_value *minval, *maxval;
547 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
548 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
549 if (!maxval || (minval && val < minval->value) || val > maxval->value)
556 * bond_opt_parse - parse option value
557 * @opt: the option to parse against
558 * @val: value to parse
560 * This function tries to extract the value from @val and check if it's
561 * a possible match for the option and returns NULL if a match isn't found,
562 * or the struct_opt_value that matched. It also strips the new line from
563 * @val->string if it's present.
565 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
566 struct bond_opt_value *val)
568 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
569 const struct bond_opt_value *tbl;
570 const struct bond_opt_value *ret = NULL;
574 /* No parsing if the option wants a raw val */
575 if (opt->flags & BOND_OPTFLAG_RAWVAL)
582 /* ULLONG_MAX is used to bypass string processing */
583 checkval = val->value != ULLONG_MAX;
587 p = strchr(val->string, '\n');
590 for (p = val->string; *p; p++)
591 if (!(isdigit(*p) || isspace(*p)))
593 /* The following code extracts the string to match or the value
594 * and sets checkval appropriately
597 rv = sscanf(val->string, "%32s", valstr);
599 rv = sscanf(val->string, "%llu", &val->value);
606 for (i = 0; tbl[i].string; i++) {
607 /* Check for exact match */
609 if (val->value == tbl[i].value)
612 if (!strcmp(valstr, "default") &&
613 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
616 if (!strcmp(valstr, tbl[i].string))
619 /* Found an exact match */
623 /* Possible range match */
624 if (checkval && bond_opt_check_range(opt, val->value))
630 /* Check opt's dependencies against bond mode and currently set options */
631 static int bond_opt_check_deps(struct bonding *bond,
632 const struct bond_option *opt)
634 struct bond_params *params = &bond->params;
636 if (test_bit(params->mode, &opt->unsuppmodes))
638 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
640 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
646 static void bond_opt_dep_print(struct bonding *bond,
647 const struct bond_option *opt,
648 struct nlattr *bad_attr,
649 struct netlink_ext_ack *extack)
651 const struct bond_opt_value *modeval;
652 struct bond_params *params;
654 params = &bond->params;
655 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
656 if (test_bit(params->mode, &opt->unsuppmodes)) {
657 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
658 opt->name, modeval->string, modeval->value);
659 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
660 "option not supported in mode");
664 static void bond_opt_error_interpret(struct bonding *bond,
665 const struct bond_option *opt,
666 int error, const struct bond_opt_value *val,
667 struct nlattr *bad_attr,
668 struct netlink_ext_ack *extack)
670 const struct bond_opt_value *minval, *maxval;
675 NL_SET_ERR_MSG_ATTR(extack, bad_attr, "invalid option value");
678 /* sometimes RAWVAL opts may have new lines */
679 p = strchr(val->string, '\n');
682 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
683 opt->name, val->string);
685 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
686 opt->name, val->value);
689 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
690 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
693 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
694 opt->name, minval ? minval->value : 0, maxval->value);
697 bond_opt_dep_print(bond, opt, bad_attr, extack);
700 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
701 "unable to set option because the bond device has slaves");
702 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
706 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
707 "unable to set option because the bond is up");
708 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
712 if (val && val->string) {
713 p = strchr(val->string, '\n');
716 netdev_err(bond->dev, "option %s: interface %s does not exist!\n",
717 opt->name, val->string);
718 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
719 "interface does not exist");
728 * __bond_opt_set - set a bonding option
729 * @bond: target bond device
730 * @option: option to set
731 * @val: value to set it to
732 * @bad_attr: netlink attribue that caused the error
733 * @extack: extended netlink error structure, used when an error message
734 * needs to be returned to the caller via netlink
736 * This function is used to change the bond's option value, it can be
737 * used for both enabling/changing an option and for disabling it. RTNL lock
738 * must be obtained before calling this function.
740 int __bond_opt_set(struct bonding *bond,
741 unsigned int option, struct bond_opt_value *val,
742 struct nlattr *bad_attr, struct netlink_ext_ack *extack)
744 const struct bond_opt_value *retval = NULL;
745 const struct bond_option *opt;
750 opt = bond_opt_get(option);
751 if (WARN_ON(!val) || WARN_ON(!opt))
753 ret = bond_opt_check_deps(bond, opt);
756 retval = bond_opt_parse(opt, val);
761 ret = opt->set(bond, retval);
764 bond_opt_error_interpret(bond, opt, ret, val, bad_attr, extack);
769 * __bond_opt_set_notify - set a bonding option
770 * @bond: target bond device
771 * @option: option to set
772 * @val: value to set it to
774 * This function is used to change the bond's option value and trigger
775 * a notification to user sapce. It can be used for both enabling/changing
776 * an option and for disabling it. RTNL lock must be obtained before calling
779 int __bond_opt_set_notify(struct bonding *bond,
780 unsigned int option, struct bond_opt_value *val)
786 ret = __bond_opt_set(bond, option, val, NULL, NULL);
788 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
789 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
795 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
796 * @bond: target bond device
797 * @option: option to set
798 * @buf: value to set it to
800 * This function tries to acquire RTNL without blocking and if successful
801 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
803 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
805 struct bond_opt_value optval;
809 return restart_syscall();
810 bond_opt_initstr(&optval, buf);
811 ret = __bond_opt_set_notify(bond, option, &optval);
818 * bond_opt_get - get a pointer to an option
819 * @option: option for which to return a pointer
821 * This function checks if option is valid and if so returns a pointer
822 * to its entry in the bond_opts[] option array.
824 const struct bond_option *bond_opt_get(unsigned int option)
826 if (!BOND_OPT_VALID(option))
829 return &bond_opts[option];
832 static bool bond_set_xfrm_features(struct bonding *bond)
834 if (!IS_ENABLED(CONFIG_XFRM_OFFLOAD))
837 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
838 bond->dev->wanted_features |= BOND_XFRM_FEATURES;
840 bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
845 static int bond_option_mode_set(struct bonding *bond,
846 const struct bond_opt_value *newval)
848 if (!bond_mode_uses_arp(newval->value)) {
849 if (bond->params.arp_interval) {
850 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
852 /* disable arp monitoring */
853 bond->params.arp_interval = 0;
856 if (!bond->params.miimon) {
857 /* set miimon to default value */
858 bond->params.miimon = BOND_DEFAULT_MIIMON;
859 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n",
860 bond->params.miimon);
864 if (newval->value == BOND_MODE_ALB)
865 bond->params.tlb_dynamic_lb = 1;
867 /* don't cache arp_validate between modes */
868 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
869 bond->params.mode = newval->value;
871 if (bond->dev->reg_state == NETREG_REGISTERED) {
874 update |= bond_set_xfrm_features(bond);
877 netdev_update_features(bond->dev);
883 static int bond_option_active_slave_set(struct bonding *bond,
884 const struct bond_opt_value *newval)
886 char ifname[IFNAMSIZ] = { 0, };
887 struct net_device *slave_dev;
890 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
891 if (!strlen(ifname) || newval->string[0] == '\n') {
894 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
900 if (!netif_is_bond_slave(slave_dev)) {
901 slave_err(bond->dev, slave_dev, "Device is not bonding slave\n");
905 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
906 slave_err(bond->dev, slave_dev, "Device is not our slave\n");
912 /* check to see if we are clearing active */
914 netdev_dbg(bond->dev, "Clearing current active slave\n");
915 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
916 bond_select_active_slave(bond);
918 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
919 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
923 if (new_active == old_active) {
925 slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n");
927 if (old_active && (new_active->link == BOND_LINK_UP) &&
928 bond_slave_is_up(new_active)) {
929 slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n");
930 bond_change_active_slave(bond, new_active);
932 slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n",
933 new_active->dev->name);
938 unblock_netpoll_tx();
943 /* There are two tricky bits here. First, if MII monitoring is activated, then
944 * we must disable ARP monitoring. Second, if the timer isn't running, we must
947 static int bond_option_miimon_set(struct bonding *bond,
948 const struct bond_opt_value *newval)
950 netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n",
952 bond->params.miimon = newval->value;
953 if (bond->params.updelay)
954 netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
955 bond->params.updelay * bond->params.miimon);
956 if (bond->params.downdelay)
957 netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
958 bond->params.downdelay * bond->params.miimon);
959 if (bond->params.peer_notif_delay)
960 netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n",
961 bond->params.peer_notif_delay * bond->params.miimon);
962 if (newval->value && bond->params.arp_interval) {
963 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
964 bond->params.arp_interval = 0;
965 if (bond->params.arp_validate)
966 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
968 if (bond->dev->flags & IFF_UP) {
969 /* If the interface is up, we may need to fire off
970 * the MII timer. If the interface is down, the
971 * timer will get fired off when the open function
974 if (!newval->value) {
975 cancel_delayed_work_sync(&bond->mii_work);
977 cancel_delayed_work_sync(&bond->arp_work);
978 queue_delayed_work(bond->wq, &bond->mii_work, 0);
985 /* Set up, down and peer notification delays. These must be multiples
986 * of the MII monitoring value, and are stored internally as the
987 * multiplier. Thus, we must translate to MS for the real world.
989 static int _bond_option_delay_set(struct bonding *bond,
990 const struct bond_opt_value *newval,
994 int value = newval->value;
996 if (!bond->params.miimon) {
997 netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n",
1001 if ((value % bond->params.miimon) != 0) {
1002 netdev_warn(bond->dev,
1003 "%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n",
1005 value, bond->params.miimon,
1006 (value / bond->params.miimon) *
1007 bond->params.miimon);
1009 *target = value / bond->params.miimon;
1010 netdev_dbg(bond->dev, "Setting %s to %d\n",
1012 *target * bond->params.miimon);
1017 static int bond_option_updelay_set(struct bonding *bond,
1018 const struct bond_opt_value *newval)
1020 return _bond_option_delay_set(bond, newval, "up delay",
1021 &bond->params.updelay);
1024 static int bond_option_downdelay_set(struct bonding *bond,
1025 const struct bond_opt_value *newval)
1027 return _bond_option_delay_set(bond, newval, "down delay",
1028 &bond->params.downdelay);
1031 static int bond_option_peer_notif_delay_set(struct bonding *bond,
1032 const struct bond_opt_value *newval)
1034 int ret = _bond_option_delay_set(bond, newval,
1035 "peer notification delay",
1036 &bond->params.peer_notif_delay);
1040 static int bond_option_use_carrier_set(struct bonding *bond,
1041 const struct bond_opt_value *newval)
1043 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n",
1045 bond->params.use_carrier = newval->value;
1050 /* There are two tricky bits here. First, if ARP monitoring is activated, then
1051 * we must disable MII monitoring. Second, if the ARP timer isn't running,
1054 static int bond_option_arp_interval_set(struct bonding *bond,
1055 const struct bond_opt_value *newval)
1057 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n",
1059 bond->params.arp_interval = newval->value;
1060 if (newval->value) {
1061 if (bond->params.miimon) {
1062 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
1063 bond->params.miimon = 0;
1065 if (!bond->params.arp_targets[0])
1066 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
1068 if (bond->dev->flags & IFF_UP) {
1069 /* If the interface is up, we may need to fire off
1070 * the ARP timer. If the interface is down, the
1071 * timer will get fired off when the open function
1074 if (!newval->value) {
1075 if (bond->params.arp_validate)
1076 bond->recv_probe = NULL;
1077 cancel_delayed_work_sync(&bond->arp_work);
1079 /* arp_validate can be set only in active-backup mode */
1080 bond->recv_probe = bond_rcv_validate;
1081 cancel_delayed_work_sync(&bond->mii_work);
1082 queue_delayed_work(bond->wq, &bond->arp_work, 0);
1089 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
1091 unsigned long last_rx)
1093 __be32 *targets = bond->params.arp_targets;
1094 struct list_head *iter;
1095 struct slave *slave;
1097 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
1098 bond_for_each_slave(bond, slave, iter)
1099 slave->target_last_arp_rx[slot] = last_rx;
1100 targets[slot] = target;
1104 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1106 __be32 *targets = bond->params.arp_targets;
1109 if (!bond_is_ip_target_ok(target)) {
1110 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
1115 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
1116 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
1121 ind = bond_get_targets_ip(targets, 0); /* first free slot */
1123 netdev_err(bond->dev, "ARP target table is full!\n");
1127 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
1129 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
1134 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1136 return _bond_option_arp_ip_target_add(bond, target);
1139 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
1141 __be32 *targets = bond->params.arp_targets;
1142 struct list_head *iter;
1143 struct slave *slave;
1144 unsigned long *targets_rx;
1147 if (!bond_is_ip_target_ok(target)) {
1148 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1153 ind = bond_get_targets_ip(targets, target);
1155 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1160 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1161 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1163 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
1165 bond_for_each_slave(bond, slave, iter) {
1166 targets_rx = slave->target_last_arp_rx;
1167 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1168 targets_rx[i] = targets_rx[i+1];
1171 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1172 targets[i] = targets[i+1];
1178 void bond_option_arp_ip_targets_clear(struct bonding *bond)
1182 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1183 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1186 static int bond_option_arp_ip_targets_set(struct bonding *bond,
1187 const struct bond_opt_value *newval)
1192 if (newval->string) {
1193 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
1194 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1198 if (newval->string[0] == '+')
1199 ret = bond_option_arp_ip_target_add(bond, target);
1200 else if (newval->string[0] == '-')
1201 ret = bond_option_arp_ip_target_rem(bond, target);
1203 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1205 target = newval->value;
1206 ret = bond_option_arp_ip_target_add(bond, target);
1212 #if IS_ENABLED(CONFIG_IPV6)
1213 static void _bond_options_ns_ip6_target_set(struct bonding *bond, int slot,
1214 struct in6_addr *target,
1215 unsigned long last_rx)
1217 struct in6_addr *targets = bond->params.ns_targets;
1218 struct list_head *iter;
1219 struct slave *slave;
1221 if (slot >= 0 && slot < BOND_MAX_NS_TARGETS) {
1222 bond_for_each_slave(bond, slave, iter)
1223 slave->target_last_arp_rx[slot] = last_rx;
1224 targets[slot] = *target;
1228 void bond_option_ns_ip6_targets_clear(struct bonding *bond)
1230 struct in6_addr addr_any = in6addr_any;
1233 for (i = 0; i < BOND_MAX_NS_TARGETS; i++)
1234 _bond_options_ns_ip6_target_set(bond, i, &addr_any, 0);
1237 static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1238 const struct bond_opt_value *newval)
1240 struct in6_addr *target = (struct in6_addr *)newval->extra;
1241 struct in6_addr *targets = bond->params.ns_targets;
1242 struct in6_addr addr_any = in6addr_any;
1245 if (!bond_is_ip6_target_ok(target)) {
1246 netdev_err(bond->dev, "invalid NS target %pI6c specified for addition\n",
1251 if (bond_get_targets_ip6(targets, target) != -1) { /* dup */
1252 netdev_err(bond->dev, "NS target %pI6c is already present\n",
1257 index = bond_get_targets_ip6(targets, &addr_any); /* first free slot */
1259 netdev_err(bond->dev, "NS target table is full!\n");
1263 netdev_dbg(bond->dev, "Adding NS target %pI6c\n", target);
1265 _bond_options_ns_ip6_target_set(bond, index, target, jiffies);
1270 static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1271 const struct bond_opt_value *newval)
1277 static int bond_option_arp_validate_set(struct bonding *bond,
1278 const struct bond_opt_value *newval)
1280 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n",
1281 newval->string, newval->value);
1282 bond->params.arp_validate = newval->value;
1287 static int bond_option_arp_all_targets_set(struct bonding *bond,
1288 const struct bond_opt_value *newval)
1290 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1291 newval->string, newval->value);
1292 bond->params.arp_all_targets = newval->value;
1297 static int bond_option_missed_max_set(struct bonding *bond,
1298 const struct bond_opt_value *newval)
1300 netdev_dbg(bond->dev, "Setting missed max to %s (%llu)\n",
1301 newval->string, newval->value);
1302 bond->params.missed_max = newval->value;
1307 static int bond_option_prio_set(struct bonding *bond,
1308 const struct bond_opt_value *newval)
1310 struct slave *slave;
1312 slave = bond_slave_get_rtnl(newval->slave_dev);
1314 netdev_dbg(newval->slave_dev, "%s called on NULL slave\n", __func__);
1317 slave->prio = newval->value;
1319 if (rtnl_dereference(bond->primary_slave))
1320 slave_warn(bond->dev, slave->dev,
1321 "prio updated, but will not affect failover re-selection as primary slave have been set\n");
1323 bond_select_active_slave(bond);
1328 static int bond_option_primary_set(struct bonding *bond,
1329 const struct bond_opt_value *newval)
1331 char *p, *primary = newval->string;
1332 struct list_head *iter;
1333 struct slave *slave;
1337 p = strchr(primary, '\n');
1340 /* check to see if we are clearing primary */
1341 if (!strlen(primary)) {
1342 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1343 RCU_INIT_POINTER(bond->primary_slave, NULL);
1344 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1345 bond_select_active_slave(bond);
1349 bond_for_each_slave(bond, slave, iter) {
1350 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1351 slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n");
1352 rcu_assign_pointer(bond->primary_slave, slave);
1353 strcpy(bond->params.primary, slave->dev->name);
1354 bond->force_primary = true;
1355 bond_select_active_slave(bond);
1360 if (rtnl_dereference(bond->primary_slave)) {
1361 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1362 RCU_INIT_POINTER(bond->primary_slave, NULL);
1363 bond_select_active_slave(bond);
1365 strscpy_pad(bond->params.primary, primary, IFNAMSIZ);
1367 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n",
1371 unblock_netpoll_tx();
1376 static int bond_option_primary_reselect_set(struct bonding *bond,
1377 const struct bond_opt_value *newval)
1379 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1380 newval->string, newval->value);
1381 bond->params.primary_reselect = newval->value;
1384 bond_select_active_slave(bond);
1385 unblock_netpoll_tx();
1390 static int bond_option_fail_over_mac_set(struct bonding *bond,
1391 const struct bond_opt_value *newval)
1393 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1394 newval->string, newval->value);
1395 bond->params.fail_over_mac = newval->value;
1400 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1401 const struct bond_opt_value *newval)
1403 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1404 newval->string, newval->value);
1405 bond->params.xmit_policy = newval->value;
1410 static int bond_option_resend_igmp_set(struct bonding *bond,
1411 const struct bond_opt_value *newval)
1413 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n",
1415 bond->params.resend_igmp = newval->value;
1420 static int bond_option_num_peer_notif_set(struct bonding *bond,
1421 const struct bond_opt_value *newval)
1423 bond->params.num_peer_notif = newval->value;
1428 static int bond_option_all_slaves_active_set(struct bonding *bond,
1429 const struct bond_opt_value *newval)
1431 struct list_head *iter;
1432 struct slave *slave;
1434 if (newval->value == bond->params.all_slaves_active)
1436 bond->params.all_slaves_active = newval->value;
1437 bond_for_each_slave(bond, slave, iter) {
1438 if (!bond_is_active_slave(slave)) {
1440 slave->inactive = 0;
1442 slave->inactive = 1;
1449 static int bond_option_min_links_set(struct bonding *bond,
1450 const struct bond_opt_value *newval)
1452 netdev_dbg(bond->dev, "Setting min links value to %llu\n",
1454 bond->params.min_links = newval->value;
1455 bond_set_carrier(bond);
1460 static int bond_option_lp_interval_set(struct bonding *bond,
1461 const struct bond_opt_value *newval)
1463 bond->params.lp_interval = newval->value;
1468 static int bond_option_pps_set(struct bonding *bond,
1469 const struct bond_opt_value *newval)
1471 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n",
1473 bond->params.packets_per_slave = newval->value;
1474 if (newval->value > 0) {
1475 bond->params.reciprocal_packets_per_slave =
1476 reciprocal_value(newval->value);
1478 /* reciprocal_packets_per_slave is unused if
1479 * packets_per_slave is 0 or 1, just initialize it
1481 bond->params.reciprocal_packets_per_slave =
1482 (struct reciprocal_value) { 0 };
1488 static int bond_option_lacp_active_set(struct bonding *bond,
1489 const struct bond_opt_value *newval)
1491 netdev_dbg(bond->dev, "Setting LACP active to %s (%llu)\n",
1492 newval->string, newval->value);
1493 bond->params.lacp_active = newval->value;
1498 static int bond_option_lacp_rate_set(struct bonding *bond,
1499 const struct bond_opt_value *newval)
1501 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n",
1502 newval->string, newval->value);
1503 bond->params.lacp_fast = newval->value;
1504 bond_3ad_update_lacp_rate(bond);
1509 static int bond_option_ad_select_set(struct bonding *bond,
1510 const struct bond_opt_value *newval)
1512 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n",
1513 newval->string, newval->value);
1514 bond->params.ad_select = newval->value;
1519 static int bond_option_queue_id_set(struct bonding *bond,
1520 const struct bond_opt_value *newval)
1522 struct slave *slave, *update_slave;
1523 struct net_device *sdev;
1524 struct list_head *iter;
1529 /* delim will point to queue id if successful */
1530 delim = strchr(newval->string, ':');
1534 /* Terminate string that points to device name and bump it
1535 * up one, so we can read the queue id there.
1538 if (sscanf(++delim, "%hd\n", &qid) != 1)
1541 /* Check buffer length, valid ifname and queue id */
1542 if (!dev_valid_name(newval->string) ||
1543 qid > bond->dev->real_num_tx_queues)
1546 /* Get the pointer to that interface if it exists */
1547 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1551 /* Search for thes slave and check for duplicate qids */
1552 update_slave = NULL;
1553 bond_for_each_slave(bond, slave, iter) {
1554 if (sdev == slave->dev)
1555 /* We don't need to check the matching
1556 * slave for dups, since we're overwriting it
1558 update_slave = slave;
1559 else if (qid && qid == slave->queue_id) {
1567 /* Actually set the qids for the slave */
1568 update_slave->queue_id = qid;
1574 netdev_dbg(bond->dev, "invalid input for queue_id set\n");
1580 static int bond_option_slaves_set(struct bonding *bond,
1581 const struct bond_opt_value *newval)
1583 char command[IFNAMSIZ + 1] = { 0, };
1584 struct net_device *dev;
1588 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1589 ifname = command + 1;
1590 if ((strlen(command) <= 1) ||
1591 (command[0] != '+' && command[0] != '-') ||
1592 !dev_valid_name(ifname))
1595 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1597 netdev_dbg(bond->dev, "interface %s does not exist!\n",
1603 switch (command[0]) {
1605 slave_dbg(bond->dev, dev, "Enslaving interface\n");
1606 ret = bond_enslave(bond->dev, dev, NULL);
1610 slave_dbg(bond->dev, dev, "Releasing interface\n");
1611 ret = bond_release(bond->dev, dev);
1615 /* should not run here. */
1623 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1628 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1629 const struct bond_opt_value *newval)
1631 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1632 newval->string, newval->value);
1633 bond->params.tlb_dynamic_lb = newval->value;
1638 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1639 const struct bond_opt_value *newval)
1641 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1644 bond->params.ad_actor_sys_prio = newval->value;
1645 bond_3ad_update_ad_actor_settings(bond);
1650 static int bond_option_ad_actor_system_set(struct bonding *bond,
1651 const struct bond_opt_value *newval)
1653 u8 macaddr[ETH_ALEN];
1656 if (newval->string) {
1657 if (!mac_pton(newval->string, macaddr))
1661 mac = (u8 *)&newval->value;
1664 if (is_multicast_ether_addr(mac))
1667 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1668 ether_addr_copy(bond->params.ad_actor_system, mac);
1669 bond_3ad_update_ad_actor_settings(bond);
1674 netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n");
1678 static int bond_option_ad_user_port_key_set(struct bonding *bond,
1679 const struct bond_opt_value *newval)
1681 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n",
1684 bond->params.ad_user_port_key = newval->value;