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_primary_set(struct bonding *bond,
44 const struct bond_opt_value *newval);
45 static int bond_option_primary_reselect_set(struct bonding *bond,
46 const struct bond_opt_value *newval);
47 static int bond_option_fail_over_mac_set(struct bonding *bond,
48 const struct bond_opt_value *newval);
49 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
50 const struct bond_opt_value *newval);
51 static int bond_option_resend_igmp_set(struct bonding *bond,
52 const struct bond_opt_value *newval);
53 static int bond_option_num_peer_notif_set(struct bonding *bond,
54 const struct bond_opt_value *newval);
55 static int bond_option_all_slaves_active_set(struct bonding *bond,
56 const struct bond_opt_value *newval);
57 static int bond_option_min_links_set(struct bonding *bond,
58 const struct bond_opt_value *newval);
59 static int bond_option_lp_interval_set(struct bonding *bond,
60 const struct bond_opt_value *newval);
61 static int bond_option_pps_set(struct bonding *bond,
62 const struct bond_opt_value *newval);
63 static int bond_option_lacp_active_set(struct bonding *bond,
64 const struct bond_opt_value *newval);
65 static int bond_option_lacp_rate_set(struct bonding *bond,
66 const struct bond_opt_value *newval);
67 static int bond_option_ad_select_set(struct bonding *bond,
68 const struct bond_opt_value *newval);
69 static int bond_option_queue_id_set(struct bonding *bond,
70 const struct bond_opt_value *newval);
71 static int bond_option_mode_set(struct bonding *bond,
72 const struct bond_opt_value *newval);
73 static int bond_option_slaves_set(struct bonding *bond,
74 const struct bond_opt_value *newval);
75 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
76 const struct bond_opt_value *newval);
77 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
78 const struct bond_opt_value *newval);
79 static int bond_option_ad_actor_system_set(struct bonding *bond,
80 const struct bond_opt_value *newval);
81 static int bond_option_ad_user_port_key_set(struct bonding *bond,
82 const struct bond_opt_value *newval);
83 static int bond_option_missed_max_set(struct bonding *bond,
84 const struct bond_opt_value *newval);
87 static const struct bond_opt_value bond_mode_tbl[] = {
88 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
89 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
90 { "balance-xor", BOND_MODE_XOR, 0},
91 { "broadcast", BOND_MODE_BROADCAST, 0},
92 { "802.3ad", BOND_MODE_8023AD, 0},
93 { "balance-tlb", BOND_MODE_TLB, 0},
94 { "balance-alb", BOND_MODE_ALB, 0},
98 static const struct bond_opt_value bond_pps_tbl[] = {
99 { "default", 1, BOND_VALFLAG_DEFAULT},
100 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
104 static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
105 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
106 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
107 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
108 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
109 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
110 { "vlan+srcmac", BOND_XMIT_POLICY_VLAN_SRCMAC, 0},
114 static const struct bond_opt_value bond_arp_validate_tbl[] = {
115 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
116 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
117 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
118 { "all", BOND_ARP_VALIDATE_ALL, 0},
119 { "filter", BOND_ARP_FILTER, 0},
120 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
121 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
125 static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
126 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
127 { "all", BOND_ARP_TARGETS_ALL, 0},
131 static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
132 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
133 { "active", BOND_FOM_ACTIVE, 0},
134 { "follow", BOND_FOM_FOLLOW, 0},
138 static const struct bond_opt_value bond_intmax_tbl[] = {
139 { "off", 0, BOND_VALFLAG_DEFAULT},
140 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
144 static const struct bond_opt_value bond_lacp_active[] = {
146 { "on", 1, BOND_VALFLAG_DEFAULT},
150 static const struct bond_opt_value bond_lacp_rate_tbl[] = {
151 { "slow", AD_LACP_SLOW, 0},
152 { "fast", AD_LACP_FAST, 0},
156 static const struct bond_opt_value bond_ad_select_tbl[] = {
157 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
158 { "bandwidth", BOND_AD_BANDWIDTH, 0},
159 { "count", BOND_AD_COUNT, 0},
163 static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
165 { "maxval", 255, BOND_VALFLAG_MAX},
166 { "default", 1, BOND_VALFLAG_DEFAULT},
170 static const struct bond_opt_value bond_primary_reselect_tbl[] = {
171 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
172 { "better", BOND_PRI_RESELECT_BETTER, 0},
173 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
177 static const struct bond_opt_value bond_use_carrier_tbl[] = {
179 { "on", 1, BOND_VALFLAG_DEFAULT},
183 static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
184 { "off", 0, BOND_VALFLAG_DEFAULT},
189 static const struct bond_opt_value bond_resend_igmp_tbl[] = {
191 { "maxval", 255, BOND_VALFLAG_MAX},
192 { "default", 1, BOND_VALFLAG_DEFAULT},
196 static const struct bond_opt_value bond_lp_interval_tbl[] = {
197 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
198 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
202 static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
204 { "on", 1, BOND_VALFLAG_DEFAULT},
208 static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
209 { "minval", 1, BOND_VALFLAG_MIN},
210 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
214 static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
215 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
216 { "maxval", 1023, BOND_VALFLAG_MAX},
220 static const struct bond_opt_value bond_missed_max_tbl[] = {
221 { "minval", 1, BOND_VALFLAG_MIN},
222 { "maxval", 255, BOND_VALFLAG_MAX},
223 { "default", 2, BOND_VALFLAG_DEFAULT},
227 static const struct bond_option bond_opts[BOND_OPT_LAST] = {
231 .desc = "bond device mode",
232 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
233 .values = bond_mode_tbl,
234 .set = bond_option_mode_set
236 [BOND_OPT_PACKETS_PER_SLAVE] = {
237 .id = BOND_OPT_PACKETS_PER_SLAVE,
238 .name = "packets_per_slave",
239 .desc = "Packets to send per slave in RR mode",
240 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
241 .values = bond_pps_tbl,
242 .set = bond_option_pps_set
244 [BOND_OPT_XMIT_HASH] = {
245 .id = BOND_OPT_XMIT_HASH,
246 .name = "xmit_hash_policy",
247 .desc = "balance-xor, 802.3ad, and tlb hashing method",
248 .values = bond_xmit_hashtype_tbl,
249 .set = bond_option_xmit_hash_policy_set
251 [BOND_OPT_ARP_VALIDATE] = {
252 .id = BOND_OPT_ARP_VALIDATE,
253 .name = "arp_validate",
254 .desc = "validate src/dst of ARP probes",
255 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
257 .values = bond_arp_validate_tbl,
258 .set = bond_option_arp_validate_set
260 [BOND_OPT_ARP_ALL_TARGETS] = {
261 .id = BOND_OPT_ARP_ALL_TARGETS,
262 .name = "arp_all_targets",
263 .desc = "fail on any/all arp targets timeout",
264 .values = bond_arp_all_targets_tbl,
265 .set = bond_option_arp_all_targets_set
267 [BOND_OPT_FAIL_OVER_MAC] = {
268 .id = BOND_OPT_FAIL_OVER_MAC,
269 .name = "fail_over_mac",
270 .desc = "For active-backup, do not set all slaves to the same MAC",
271 .flags = BOND_OPTFLAG_NOSLAVES,
272 .values = bond_fail_over_mac_tbl,
273 .set = bond_option_fail_over_mac_set
275 [BOND_OPT_ARP_INTERVAL] = {
276 .id = BOND_OPT_ARP_INTERVAL,
277 .name = "arp_interval",
278 .desc = "arp interval in milliseconds",
279 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
281 .values = bond_intmax_tbl,
282 .set = bond_option_arp_interval_set
284 [BOND_OPT_MISSED_MAX] = {
285 .id = BOND_OPT_MISSED_MAX,
286 .name = "arp_missed_max",
287 .desc = "Maximum number of missed ARP interval",
288 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
290 .values = bond_missed_max_tbl,
291 .set = bond_option_missed_max_set
293 [BOND_OPT_ARP_TARGETS] = {
294 .id = BOND_OPT_ARP_TARGETS,
295 .name = "arp_ip_target",
296 .desc = "arp targets in n.n.n.n form",
297 .flags = BOND_OPTFLAG_RAWVAL,
298 .set = bond_option_arp_ip_targets_set
300 [BOND_OPT_NS_TARGETS] = {
301 .id = BOND_OPT_NS_TARGETS,
302 .name = "ns_ip6_target",
303 .desc = "NS targets in ffff:ffff::ffff:ffff form",
304 .flags = BOND_OPTFLAG_RAWVAL,
305 .set = bond_option_ns_ip6_targets_set
307 [BOND_OPT_DOWNDELAY] = {
308 .id = BOND_OPT_DOWNDELAY,
310 .desc = "Delay before considering link down, in milliseconds",
311 .values = bond_intmax_tbl,
312 .set = bond_option_downdelay_set
314 [BOND_OPT_UPDELAY] = {
315 .id = BOND_OPT_UPDELAY,
317 .desc = "Delay before considering link up, in milliseconds",
318 .values = bond_intmax_tbl,
319 .set = bond_option_updelay_set
321 [BOND_OPT_LACP_ACTIVE] = {
322 .id = BOND_OPT_LACP_ACTIVE,
323 .name = "lacp_active",
324 .desc = "Send LACPDU frames with configured lacp rate or acts as speak when spoken to",
325 .flags = BOND_OPTFLAG_IFDOWN,
326 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
327 .values = bond_lacp_active,
328 .set = bond_option_lacp_active_set
330 [BOND_OPT_LACP_RATE] = {
331 .id = BOND_OPT_LACP_RATE,
333 .desc = "LACPDU tx rate to request from 802.3ad partner",
334 .flags = BOND_OPTFLAG_IFDOWN,
335 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
336 .values = bond_lacp_rate_tbl,
337 .set = bond_option_lacp_rate_set
339 [BOND_OPT_MINLINKS] = {
340 .id = BOND_OPT_MINLINKS,
342 .desc = "Minimum number of available links before turning on carrier",
343 .values = bond_intmax_tbl,
344 .set = bond_option_min_links_set
346 [BOND_OPT_AD_SELECT] = {
347 .id = BOND_OPT_AD_SELECT,
349 .desc = "803.ad aggregation selection logic",
350 .flags = BOND_OPTFLAG_IFDOWN,
351 .values = bond_ad_select_tbl,
352 .set = bond_option_ad_select_set
354 [BOND_OPT_NUM_PEER_NOTIF] = {
355 .id = BOND_OPT_NUM_PEER_NOTIF,
356 .name = "num_unsol_na",
357 .desc = "Number of peer notifications to send on failover event",
358 .values = bond_num_peer_notif_tbl,
359 .set = bond_option_num_peer_notif_set
361 [BOND_OPT_MIIMON] = {
362 .id = BOND_OPT_MIIMON,
364 .desc = "Link check interval in milliseconds",
365 .values = bond_intmax_tbl,
366 .set = bond_option_miimon_set
368 [BOND_OPT_PRIMARY] = {
369 .id = BOND_OPT_PRIMARY,
371 .desc = "Primary network device to use",
372 .flags = BOND_OPTFLAG_RAWVAL,
373 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
376 .set = bond_option_primary_set
378 [BOND_OPT_PRIMARY_RESELECT] = {
379 .id = BOND_OPT_PRIMARY_RESELECT,
380 .name = "primary_reselect",
381 .desc = "Reselect primary slave once it comes up",
382 .values = bond_primary_reselect_tbl,
383 .set = bond_option_primary_reselect_set
385 [BOND_OPT_USE_CARRIER] = {
386 .id = BOND_OPT_USE_CARRIER,
387 .name = "use_carrier",
388 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
389 .values = bond_use_carrier_tbl,
390 .set = bond_option_use_carrier_set
392 [BOND_OPT_ACTIVE_SLAVE] = {
393 .id = BOND_OPT_ACTIVE_SLAVE,
394 .name = "active_slave",
395 .desc = "Currently active slave",
396 .flags = BOND_OPTFLAG_RAWVAL,
397 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
400 .set = bond_option_active_slave_set
402 [BOND_OPT_QUEUE_ID] = {
403 .id = BOND_OPT_QUEUE_ID,
405 .desc = "Set queue id of a slave",
406 .flags = BOND_OPTFLAG_RAWVAL,
407 .set = bond_option_queue_id_set
409 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
410 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
411 .name = "all_slaves_active",
412 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
413 .values = bond_all_slaves_active_tbl,
414 .set = bond_option_all_slaves_active_set
416 [BOND_OPT_RESEND_IGMP] = {
417 .id = BOND_OPT_RESEND_IGMP,
418 .name = "resend_igmp",
419 .desc = "Number of IGMP membership reports to send on link failure",
420 .values = bond_resend_igmp_tbl,
421 .set = bond_option_resend_igmp_set
423 [BOND_OPT_LP_INTERVAL] = {
424 .id = BOND_OPT_LP_INTERVAL,
425 .name = "lp_interval",
426 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
427 .values = bond_lp_interval_tbl,
428 .set = bond_option_lp_interval_set
430 [BOND_OPT_SLAVES] = {
431 .id = BOND_OPT_SLAVES,
433 .desc = "Slave membership management",
434 .flags = BOND_OPTFLAG_RAWVAL,
435 .set = bond_option_slaves_set
437 [BOND_OPT_TLB_DYNAMIC_LB] = {
438 .id = BOND_OPT_TLB_DYNAMIC_LB,
439 .name = "tlb_dynamic_lb",
440 .desc = "Enable dynamic flow shuffling",
441 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB) | BIT(BOND_MODE_ALB)),
442 .values = bond_tlb_dynamic_lb_tbl,
443 .flags = BOND_OPTFLAG_IFDOWN,
444 .set = bond_option_tlb_dynamic_lb_set,
446 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
447 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
448 .name = "ad_actor_sys_prio",
449 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
450 .values = bond_ad_actor_sys_prio_tbl,
451 .set = bond_option_ad_actor_sys_prio_set,
453 [BOND_OPT_AD_ACTOR_SYSTEM] = {
454 .id = BOND_OPT_AD_ACTOR_SYSTEM,
455 .name = "ad_actor_system",
456 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
457 .flags = BOND_OPTFLAG_RAWVAL,
458 .set = bond_option_ad_actor_system_set,
460 [BOND_OPT_AD_USER_PORT_KEY] = {
461 .id = BOND_OPT_AD_USER_PORT_KEY,
462 .name = "ad_user_port_key",
463 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
464 .flags = BOND_OPTFLAG_IFDOWN,
465 .values = bond_ad_user_port_key_tbl,
466 .set = bond_option_ad_user_port_key_set,
468 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
469 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
470 .name = "num_grat_arp",
471 .desc = "Number of peer notifications to send on failover event",
472 .values = bond_num_peer_notif_tbl,
473 .set = bond_option_num_peer_notif_set
475 [BOND_OPT_PEER_NOTIF_DELAY] = {
476 .id = BOND_OPT_PEER_NOTIF_DELAY,
477 .name = "peer_notif_delay",
478 .desc = "Delay between each peer notification on failover event, in milliseconds",
479 .values = bond_intmax_tbl,
480 .set = bond_option_peer_notif_delay_set
484 /* Searches for an option by name */
485 const struct bond_option *bond_opt_get_by_name(const char *name)
487 const struct bond_option *opt;
490 for (option = 0; option < BOND_OPT_LAST; option++) {
491 opt = bond_opt_get(option);
492 if (opt && !strcmp(opt->name, name))
499 /* Searches for a value in opt's values[] table */
500 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
502 const struct bond_option *opt;
505 opt = bond_opt_get(option);
508 for (i = 0; opt->values && opt->values[i].string; i++)
509 if (opt->values[i].value == val)
510 return &opt->values[i];
515 /* Searches for a value in opt's values[] table which matches the flagmask */
516 static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
521 for (i = 0; opt->values && opt->values[i].string; i++)
522 if (opt->values[i].flags & flagmask)
523 return &opt->values[i];
528 /* If maxval is missing then there's no range to check. In case minval is
529 * missing then it's considered to be 0.
531 static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
533 const struct bond_opt_value *minval, *maxval;
535 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
536 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
537 if (!maxval || (minval && val < minval->value) || val > maxval->value)
544 * bond_opt_parse - parse option value
545 * @opt: the option to parse against
546 * @val: value to parse
548 * This function tries to extract the value from @val and check if it's
549 * a possible match for the option and returns NULL if a match isn't found,
550 * or the struct_opt_value that matched. It also strips the new line from
551 * @val->string if it's present.
553 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
554 struct bond_opt_value *val)
556 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
557 const struct bond_opt_value *tbl;
558 const struct bond_opt_value *ret = NULL;
562 /* No parsing if the option wants a raw val */
563 if (opt->flags & BOND_OPTFLAG_RAWVAL)
570 /* ULLONG_MAX is used to bypass string processing */
571 checkval = val->value != ULLONG_MAX;
575 p = strchr(val->string, '\n');
578 for (p = val->string; *p; p++)
579 if (!(isdigit(*p) || isspace(*p)))
581 /* The following code extracts the string to match or the value
582 * and sets checkval appropriately
585 rv = sscanf(val->string, "%32s", valstr);
587 rv = sscanf(val->string, "%llu", &val->value);
594 for (i = 0; tbl[i].string; i++) {
595 /* Check for exact match */
597 if (val->value == tbl[i].value)
600 if (!strcmp(valstr, "default") &&
601 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
604 if (!strcmp(valstr, tbl[i].string))
607 /* Found an exact match */
611 /* Possible range match */
612 if (checkval && bond_opt_check_range(opt, val->value))
618 /* Check opt's dependencies against bond mode and currently set options */
619 static int bond_opt_check_deps(struct bonding *bond,
620 const struct bond_option *opt)
622 struct bond_params *params = &bond->params;
624 if (test_bit(params->mode, &opt->unsuppmodes))
626 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
628 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
634 static void bond_opt_dep_print(struct bonding *bond,
635 const struct bond_option *opt)
637 const struct bond_opt_value *modeval;
638 struct bond_params *params;
640 params = &bond->params;
641 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
642 if (test_bit(params->mode, &opt->unsuppmodes))
643 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
644 opt->name, modeval->string, modeval->value);
647 static void bond_opt_error_interpret(struct bonding *bond,
648 const struct bond_option *opt,
649 int error, const struct bond_opt_value *val)
651 const struct bond_opt_value *minval, *maxval;
658 /* sometimes RAWVAL opts may have new lines */
659 p = strchr(val->string, '\n');
662 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
663 opt->name, val->string);
665 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
666 opt->name, val->value);
669 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
670 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
673 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
674 opt->name, minval ? minval->value : 0, maxval->value);
677 bond_opt_dep_print(bond, opt);
680 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
684 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
688 if (val && val->string) {
689 p = strchr(val->string, '\n');
692 netdev_err(bond->dev, "option %s: interface %s does not exist!\n",
693 opt->name, val->string);
702 * __bond_opt_set - set a bonding option
703 * @bond: target bond device
704 * @option: option to set
705 * @val: value to set it to
707 * This function is used to change the bond's option value, it can be
708 * used for both enabling/changing an option and for disabling it. RTNL lock
709 * must be obtained before calling this function.
711 int __bond_opt_set(struct bonding *bond,
712 unsigned int option, struct bond_opt_value *val)
714 const struct bond_opt_value *retval = NULL;
715 const struct bond_option *opt;
720 opt = bond_opt_get(option);
721 if (WARN_ON(!val) || WARN_ON(!opt))
723 ret = bond_opt_check_deps(bond, opt);
726 retval = bond_opt_parse(opt, val);
731 ret = opt->set(bond, retval);
734 bond_opt_error_interpret(bond, opt, ret, val);
739 * __bond_opt_set_notify - set a bonding option
740 * @bond: target bond device
741 * @option: option to set
742 * @val: value to set it to
744 * This function is used to change the bond's option value and trigger
745 * a notification to user sapce. It can be used for both enabling/changing
746 * an option and for disabling it. RTNL lock must be obtained before calling
749 int __bond_opt_set_notify(struct bonding *bond,
750 unsigned int option, struct bond_opt_value *val)
756 ret = __bond_opt_set(bond, option, val);
758 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
759 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
765 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
766 * @bond: target bond device
767 * @option: option to set
768 * @buf: value to set it to
770 * This function tries to acquire RTNL without blocking and if successful
771 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
773 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
775 struct bond_opt_value optval;
779 return restart_syscall();
780 bond_opt_initstr(&optval, buf);
781 ret = __bond_opt_set_notify(bond, option, &optval);
788 * bond_opt_get - get a pointer to an option
789 * @option: option for which to return a pointer
791 * This function checks if option is valid and if so returns a pointer
792 * to its entry in the bond_opts[] option array.
794 const struct bond_option *bond_opt_get(unsigned int option)
796 if (!BOND_OPT_VALID(option))
799 return &bond_opts[option];
802 static bool bond_set_xfrm_features(struct bonding *bond)
804 if (!IS_ENABLED(CONFIG_XFRM_OFFLOAD))
807 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
808 bond->dev->wanted_features |= BOND_XFRM_FEATURES;
810 bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
815 static bool bond_set_tls_features(struct bonding *bond)
817 if (!IS_ENABLED(CONFIG_TLS_DEVICE))
820 if (bond_sk_check(bond))
821 bond->dev->wanted_features |= BOND_TLS_FEATURES;
823 bond->dev->wanted_features &= ~BOND_TLS_FEATURES;
828 static int bond_option_mode_set(struct bonding *bond,
829 const struct bond_opt_value *newval)
831 if (!bond_mode_uses_arp(newval->value)) {
832 if (bond->params.arp_interval) {
833 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
835 /* disable arp monitoring */
836 bond->params.arp_interval = 0;
839 if (!bond->params.miimon) {
840 /* set miimon to default value */
841 bond->params.miimon = BOND_DEFAULT_MIIMON;
842 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n",
843 bond->params.miimon);
847 if (newval->value == BOND_MODE_ALB)
848 bond->params.tlb_dynamic_lb = 1;
850 /* don't cache arp_validate between modes */
851 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
852 bond->params.mode = newval->value;
854 if (bond->dev->reg_state == NETREG_REGISTERED) {
857 update |= bond_set_xfrm_features(bond);
858 update |= bond_set_tls_features(bond);
861 netdev_update_features(bond->dev);
867 static int bond_option_active_slave_set(struct bonding *bond,
868 const struct bond_opt_value *newval)
870 char ifname[IFNAMSIZ] = { 0, };
871 struct net_device *slave_dev;
874 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
875 if (!strlen(ifname) || newval->string[0] == '\n') {
878 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
884 if (!netif_is_bond_slave(slave_dev)) {
885 slave_err(bond->dev, slave_dev, "Device is not bonding slave\n");
889 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
890 slave_err(bond->dev, slave_dev, "Device is not our slave\n");
896 /* check to see if we are clearing active */
898 netdev_dbg(bond->dev, "Clearing current active slave\n");
899 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
900 bond_select_active_slave(bond);
902 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
903 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
907 if (new_active == old_active) {
909 slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n");
911 if (old_active && (new_active->link == BOND_LINK_UP) &&
912 bond_slave_is_up(new_active)) {
913 slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n");
914 bond_change_active_slave(bond, new_active);
916 slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n",
917 new_active->dev->name);
922 unblock_netpoll_tx();
927 /* There are two tricky bits here. First, if MII monitoring is activated, then
928 * we must disable ARP monitoring. Second, if the timer isn't running, we must
931 static int bond_option_miimon_set(struct bonding *bond,
932 const struct bond_opt_value *newval)
934 netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n",
936 bond->params.miimon = newval->value;
937 if (bond->params.updelay)
938 netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
939 bond->params.updelay * bond->params.miimon);
940 if (bond->params.downdelay)
941 netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
942 bond->params.downdelay * bond->params.miimon);
943 if (bond->params.peer_notif_delay)
944 netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n",
945 bond->params.peer_notif_delay * bond->params.miimon);
946 if (newval->value && bond->params.arp_interval) {
947 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
948 bond->params.arp_interval = 0;
949 if (bond->params.arp_validate)
950 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
952 if (bond->dev->flags & IFF_UP) {
953 /* If the interface is up, we may need to fire off
954 * the MII timer. If the interface is down, the
955 * timer will get fired off when the open function
958 if (!newval->value) {
959 cancel_delayed_work_sync(&bond->mii_work);
961 cancel_delayed_work_sync(&bond->arp_work);
962 queue_delayed_work(bond->wq, &bond->mii_work, 0);
969 /* Set up, down and peer notification delays. These must be multiples
970 * of the MII monitoring value, and are stored internally as the
971 * multiplier. Thus, we must translate to MS for the real world.
973 static int _bond_option_delay_set(struct bonding *bond,
974 const struct bond_opt_value *newval,
978 int value = newval->value;
980 if (!bond->params.miimon) {
981 netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n",
985 if ((value % bond->params.miimon) != 0) {
986 netdev_warn(bond->dev,
987 "%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n",
989 value, bond->params.miimon,
990 (value / bond->params.miimon) *
991 bond->params.miimon);
993 *target = value / bond->params.miimon;
994 netdev_dbg(bond->dev, "Setting %s to %d\n",
996 *target * bond->params.miimon);
1001 static int bond_option_updelay_set(struct bonding *bond,
1002 const struct bond_opt_value *newval)
1004 return _bond_option_delay_set(bond, newval, "up delay",
1005 &bond->params.updelay);
1008 static int bond_option_downdelay_set(struct bonding *bond,
1009 const struct bond_opt_value *newval)
1011 return _bond_option_delay_set(bond, newval, "down delay",
1012 &bond->params.downdelay);
1015 static int bond_option_peer_notif_delay_set(struct bonding *bond,
1016 const struct bond_opt_value *newval)
1018 int ret = _bond_option_delay_set(bond, newval,
1019 "peer notification delay",
1020 &bond->params.peer_notif_delay);
1024 static int bond_option_use_carrier_set(struct bonding *bond,
1025 const struct bond_opt_value *newval)
1027 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n",
1029 bond->params.use_carrier = newval->value;
1034 /* There are two tricky bits here. First, if ARP monitoring is activated, then
1035 * we must disable MII monitoring. Second, if the ARP timer isn't running,
1038 static int bond_option_arp_interval_set(struct bonding *bond,
1039 const struct bond_opt_value *newval)
1041 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n",
1043 bond->params.arp_interval = newval->value;
1044 if (newval->value) {
1045 if (bond->params.miimon) {
1046 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
1047 bond->params.miimon = 0;
1049 if (!bond->params.arp_targets[0])
1050 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
1052 if (bond->dev->flags & IFF_UP) {
1053 /* If the interface is up, we may need to fire off
1054 * the ARP timer. If the interface is down, the
1055 * timer will get fired off when the open function
1058 if (!newval->value) {
1059 if (bond->params.arp_validate)
1060 bond->recv_probe = NULL;
1061 cancel_delayed_work_sync(&bond->arp_work);
1063 /* arp_validate can be set only in active-backup mode */
1064 bond->recv_probe = bond_rcv_validate;
1065 cancel_delayed_work_sync(&bond->mii_work);
1066 queue_delayed_work(bond->wq, &bond->arp_work, 0);
1073 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
1075 unsigned long last_rx)
1077 __be32 *targets = bond->params.arp_targets;
1078 struct list_head *iter;
1079 struct slave *slave;
1081 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
1082 bond_for_each_slave(bond, slave, iter)
1083 slave->target_last_arp_rx[slot] = last_rx;
1084 targets[slot] = target;
1088 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1090 __be32 *targets = bond->params.arp_targets;
1093 if (!bond_is_ip_target_ok(target)) {
1094 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
1099 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
1100 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
1105 ind = bond_get_targets_ip(targets, 0); /* first free slot */
1107 netdev_err(bond->dev, "ARP target table is full!\n");
1111 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
1113 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
1118 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1120 return _bond_option_arp_ip_target_add(bond, target);
1123 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
1125 __be32 *targets = bond->params.arp_targets;
1126 struct list_head *iter;
1127 struct slave *slave;
1128 unsigned long *targets_rx;
1131 if (!bond_is_ip_target_ok(target)) {
1132 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1137 ind = bond_get_targets_ip(targets, target);
1139 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1144 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1145 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1147 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
1149 bond_for_each_slave(bond, slave, iter) {
1150 targets_rx = slave->target_last_arp_rx;
1151 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1152 targets_rx[i] = targets_rx[i+1];
1155 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1156 targets[i] = targets[i+1];
1162 void bond_option_arp_ip_targets_clear(struct bonding *bond)
1166 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1167 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1170 static int bond_option_arp_ip_targets_set(struct bonding *bond,
1171 const struct bond_opt_value *newval)
1176 if (newval->string) {
1177 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
1178 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1182 if (newval->string[0] == '+')
1183 ret = bond_option_arp_ip_target_add(bond, target);
1184 else if (newval->string[0] == '-')
1185 ret = bond_option_arp_ip_target_rem(bond, target);
1187 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1189 target = newval->value;
1190 ret = bond_option_arp_ip_target_add(bond, target);
1196 #if IS_ENABLED(CONFIG_IPV6)
1197 static void _bond_options_ns_ip6_target_set(struct bonding *bond, int slot,
1198 struct in6_addr *target,
1199 unsigned long last_rx)
1201 struct in6_addr *targets = bond->params.ns_targets;
1202 struct list_head *iter;
1203 struct slave *slave;
1205 if (slot >= 0 && slot < BOND_MAX_NS_TARGETS) {
1206 bond_for_each_slave(bond, slave, iter)
1207 slave->target_last_arp_rx[slot] = last_rx;
1208 targets[slot] = *target;
1212 void bond_option_ns_ip6_targets_clear(struct bonding *bond)
1214 struct in6_addr addr_any = in6addr_any;
1217 for (i = 0; i < BOND_MAX_NS_TARGETS; i++)
1218 _bond_options_ns_ip6_target_set(bond, i, &addr_any, 0);
1221 static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1222 const struct bond_opt_value *newval)
1224 struct in6_addr *target = (struct in6_addr *)newval->extra;
1225 struct in6_addr *targets = bond->params.ns_targets;
1226 struct in6_addr addr_any = in6addr_any;
1229 if (!bond_is_ip6_target_ok(target)) {
1230 netdev_err(bond->dev, "invalid NS target %pI6c specified for addition\n",
1235 if (bond_get_targets_ip6(targets, target) != -1) { /* dup */
1236 netdev_err(bond->dev, "NS target %pI6c is already present\n",
1241 index = bond_get_targets_ip6(targets, &addr_any); /* first free slot */
1243 netdev_err(bond->dev, "NS target table is full!\n");
1247 netdev_dbg(bond->dev, "Adding NS target %pI6c\n", target);
1249 _bond_options_ns_ip6_target_set(bond, index, target, jiffies);
1254 static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1255 const struct bond_opt_value *newval)
1261 static int bond_option_arp_validate_set(struct bonding *bond,
1262 const struct bond_opt_value *newval)
1264 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n",
1265 newval->string, newval->value);
1266 bond->params.arp_validate = newval->value;
1271 static int bond_option_arp_all_targets_set(struct bonding *bond,
1272 const struct bond_opt_value *newval)
1274 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1275 newval->string, newval->value);
1276 bond->params.arp_all_targets = newval->value;
1281 static int bond_option_missed_max_set(struct bonding *bond,
1282 const struct bond_opt_value *newval)
1284 netdev_dbg(bond->dev, "Setting missed max to %s (%llu)\n",
1285 newval->string, newval->value);
1286 bond->params.missed_max = newval->value;
1291 static int bond_option_primary_set(struct bonding *bond,
1292 const struct bond_opt_value *newval)
1294 char *p, *primary = newval->string;
1295 struct list_head *iter;
1296 struct slave *slave;
1300 p = strchr(primary, '\n');
1303 /* check to see if we are clearing primary */
1304 if (!strlen(primary)) {
1305 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1306 RCU_INIT_POINTER(bond->primary_slave, NULL);
1307 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1308 bond_select_active_slave(bond);
1312 bond_for_each_slave(bond, slave, iter) {
1313 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1314 slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n");
1315 rcu_assign_pointer(bond->primary_slave, slave);
1316 strcpy(bond->params.primary, slave->dev->name);
1317 bond->force_primary = true;
1318 bond_select_active_slave(bond);
1323 if (rtnl_dereference(bond->primary_slave)) {
1324 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1325 RCU_INIT_POINTER(bond->primary_slave, NULL);
1326 bond_select_active_slave(bond);
1328 strscpy_pad(bond->params.primary, primary, IFNAMSIZ);
1330 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n",
1334 unblock_netpoll_tx();
1339 static int bond_option_primary_reselect_set(struct bonding *bond,
1340 const struct bond_opt_value *newval)
1342 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1343 newval->string, newval->value);
1344 bond->params.primary_reselect = newval->value;
1347 bond_select_active_slave(bond);
1348 unblock_netpoll_tx();
1353 static int bond_option_fail_over_mac_set(struct bonding *bond,
1354 const struct bond_opt_value *newval)
1356 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1357 newval->string, newval->value);
1358 bond->params.fail_over_mac = newval->value;
1363 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1364 const struct bond_opt_value *newval)
1366 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1367 newval->string, newval->value);
1368 bond->params.xmit_policy = newval->value;
1370 if (bond->dev->reg_state == NETREG_REGISTERED)
1371 if (bond_set_tls_features(bond))
1372 netdev_update_features(bond->dev);
1377 static int bond_option_resend_igmp_set(struct bonding *bond,
1378 const struct bond_opt_value *newval)
1380 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n",
1382 bond->params.resend_igmp = newval->value;
1387 static int bond_option_num_peer_notif_set(struct bonding *bond,
1388 const struct bond_opt_value *newval)
1390 bond->params.num_peer_notif = newval->value;
1395 static int bond_option_all_slaves_active_set(struct bonding *bond,
1396 const struct bond_opt_value *newval)
1398 struct list_head *iter;
1399 struct slave *slave;
1401 if (newval->value == bond->params.all_slaves_active)
1403 bond->params.all_slaves_active = newval->value;
1404 bond_for_each_slave(bond, slave, iter) {
1405 if (!bond_is_active_slave(slave)) {
1407 slave->inactive = 0;
1409 slave->inactive = 1;
1416 static int bond_option_min_links_set(struct bonding *bond,
1417 const struct bond_opt_value *newval)
1419 netdev_dbg(bond->dev, "Setting min links value to %llu\n",
1421 bond->params.min_links = newval->value;
1422 bond_set_carrier(bond);
1427 static int bond_option_lp_interval_set(struct bonding *bond,
1428 const struct bond_opt_value *newval)
1430 bond->params.lp_interval = newval->value;
1435 static int bond_option_pps_set(struct bonding *bond,
1436 const struct bond_opt_value *newval)
1438 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n",
1440 bond->params.packets_per_slave = newval->value;
1441 if (newval->value > 0) {
1442 bond->params.reciprocal_packets_per_slave =
1443 reciprocal_value(newval->value);
1445 /* reciprocal_packets_per_slave is unused if
1446 * packets_per_slave is 0 or 1, just initialize it
1448 bond->params.reciprocal_packets_per_slave =
1449 (struct reciprocal_value) { 0 };
1455 static int bond_option_lacp_active_set(struct bonding *bond,
1456 const struct bond_opt_value *newval)
1458 netdev_dbg(bond->dev, "Setting LACP active to %s (%llu)\n",
1459 newval->string, newval->value);
1460 bond->params.lacp_active = newval->value;
1465 static int bond_option_lacp_rate_set(struct bonding *bond,
1466 const struct bond_opt_value *newval)
1468 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n",
1469 newval->string, newval->value);
1470 bond->params.lacp_fast = newval->value;
1471 bond_3ad_update_lacp_rate(bond);
1476 static int bond_option_ad_select_set(struct bonding *bond,
1477 const struct bond_opt_value *newval)
1479 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n",
1480 newval->string, newval->value);
1481 bond->params.ad_select = newval->value;
1486 static int bond_option_queue_id_set(struct bonding *bond,
1487 const struct bond_opt_value *newval)
1489 struct slave *slave, *update_slave;
1490 struct net_device *sdev;
1491 struct list_head *iter;
1496 /* delim will point to queue id if successful */
1497 delim = strchr(newval->string, ':');
1501 /* Terminate string that points to device name and bump it
1502 * up one, so we can read the queue id there.
1505 if (sscanf(++delim, "%hd\n", &qid) != 1)
1508 /* Check buffer length, valid ifname and queue id */
1509 if (!dev_valid_name(newval->string) ||
1510 qid > bond->dev->real_num_tx_queues)
1513 /* Get the pointer to that interface if it exists */
1514 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1518 /* Search for thes slave and check for duplicate qids */
1519 update_slave = NULL;
1520 bond_for_each_slave(bond, slave, iter) {
1521 if (sdev == slave->dev)
1522 /* We don't need to check the matching
1523 * slave for dups, since we're overwriting it
1525 update_slave = slave;
1526 else if (qid && qid == slave->queue_id) {
1534 /* Actually set the qids for the slave */
1535 update_slave->queue_id = qid;
1541 netdev_dbg(bond->dev, "invalid input for queue_id set\n");
1547 static int bond_option_slaves_set(struct bonding *bond,
1548 const struct bond_opt_value *newval)
1550 char command[IFNAMSIZ + 1] = { 0, };
1551 struct net_device *dev;
1555 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1556 ifname = command + 1;
1557 if ((strlen(command) <= 1) ||
1558 (command[0] != '+' && command[0] != '-') ||
1559 !dev_valid_name(ifname))
1562 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1564 netdev_dbg(bond->dev, "interface %s does not exist!\n",
1570 switch (command[0]) {
1572 slave_dbg(bond->dev, dev, "Enslaving interface\n");
1573 ret = bond_enslave(bond->dev, dev, NULL);
1577 slave_dbg(bond->dev, dev, "Releasing interface\n");
1578 ret = bond_release(bond->dev, dev);
1582 /* should not run here. */
1590 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1595 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1596 const struct bond_opt_value *newval)
1598 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1599 newval->string, newval->value);
1600 bond->params.tlb_dynamic_lb = newval->value;
1605 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1606 const struct bond_opt_value *newval)
1608 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1611 bond->params.ad_actor_sys_prio = newval->value;
1612 bond_3ad_update_ad_actor_settings(bond);
1617 static int bond_option_ad_actor_system_set(struct bonding *bond,
1618 const struct bond_opt_value *newval)
1620 u8 macaddr[ETH_ALEN];
1623 if (newval->string) {
1624 if (!mac_pton(newval->string, macaddr))
1628 mac = (u8 *)&newval->value;
1631 if (is_multicast_ether_addr(mac))
1634 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1635 ether_addr_copy(bond->params.ad_actor_system, mac);
1636 bond_3ad_update_ad_actor_settings(bond);
1641 netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n");
1645 static int bond_option_ad_user_port_key_set(struct bonding *bond,
1646 const struct bond_opt_value *newval)
1648 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n",
1651 bond->params.ad_user_port_key = newval->value;