1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
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>
6 */
7
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 #include <net/ndisc.h>
19
20 static int bond_option_active_slave_set(struct bonding *bond,
21 const struct bond_opt_value *newval);
22 static int bond_option_miimon_set(struct bonding *bond,
23 const struct bond_opt_value *newval);
24 static int bond_option_updelay_set(struct bonding *bond,
25 const struct bond_opt_value *newval);
26 static int bond_option_downdelay_set(struct bonding *bond,
27 const struct bond_opt_value *newval);
28 static int bond_option_peer_notif_delay_set(struct bonding *bond,
29 const struct bond_opt_value *newval);
30 static int bond_option_use_carrier_set(struct bonding *bond,
31 const struct bond_opt_value *newval);
32 static int bond_option_arp_interval_set(struct bonding *bond,
33 const struct bond_opt_value *newval);
34 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
35 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
36 static int bond_option_arp_ip_targets_set(struct bonding *bond,
37 const struct bond_opt_value *newval);
38 static int bond_option_ns_ip6_targets_set(struct bonding *bond,
39 const struct bond_opt_value *newval);
40 static int bond_option_arp_validate_set(struct bonding *bond,
41 const struct bond_opt_value *newval);
42 static int bond_option_arp_all_targets_set(struct bonding *bond,
43 const struct bond_opt_value *newval);
44 static int bond_option_prio_set(struct bonding *bond,
45 const struct bond_opt_value *newval);
46 static int bond_option_primary_set(struct bonding *bond,
47 const struct bond_opt_value *newval);
48 static int bond_option_primary_reselect_set(struct bonding *bond,
49 const struct bond_opt_value *newval);
50 static int bond_option_fail_over_mac_set(struct bonding *bond,
51 const struct bond_opt_value *newval);
52 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
53 const struct bond_opt_value *newval);
54 static int bond_option_resend_igmp_set(struct bonding *bond,
55 const struct bond_opt_value *newval);
56 static int bond_option_num_peer_notif_set(struct bonding *bond,
57 const struct bond_opt_value *newval);
58 static int bond_option_all_slaves_active_set(struct bonding *bond,
59 const struct bond_opt_value *newval);
60 static int bond_option_min_links_set(struct bonding *bond,
61 const struct bond_opt_value *newval);
62 static int bond_option_lp_interval_set(struct bonding *bond,
63 const struct bond_opt_value *newval);
64 static int bond_option_pps_set(struct bonding *bond,
65 const struct bond_opt_value *newval);
66 static int bond_option_lacp_active_set(struct bonding *bond,
67 const struct bond_opt_value *newval);
68 static int bond_option_lacp_rate_set(struct bonding *bond,
69 const struct bond_opt_value *newval);
70 static int bond_option_ad_select_set(struct bonding *bond,
71 const struct bond_opt_value *newval);
72 static int bond_option_queue_id_set(struct bonding *bond,
73 const struct bond_opt_value *newval);
74 static int bond_option_mode_set(struct bonding *bond,
75 const struct bond_opt_value *newval);
76 static int bond_option_slaves_set(struct bonding *bond,
77 const struct bond_opt_value *newval);
78 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
79 const struct bond_opt_value *newval);
80 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
81 const struct bond_opt_value *newval);
82 static int bond_option_ad_actor_system_set(struct bonding *bond,
83 const struct bond_opt_value *newval);
84 static int bond_option_ad_user_port_key_set(struct bonding *bond,
85 const struct bond_opt_value *newval);
86 static int bond_option_missed_max_set(struct bonding *bond,
87 const struct bond_opt_value *newval);
88
89
90 static const struct bond_opt_value bond_mode_tbl[] = {
91 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
92 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
93 { "balance-xor", BOND_MODE_XOR, 0},
94 { "broadcast", BOND_MODE_BROADCAST, 0},
95 { "802.3ad", BOND_MODE_8023AD, 0},
96 { "balance-tlb", BOND_MODE_TLB, 0},
97 { "balance-alb", BOND_MODE_ALB, 0},
98 { NULL, -1, 0},
99 };
100
101 static const struct bond_opt_value bond_pps_tbl[] = {
102 { "default", 1, BOND_VALFLAG_DEFAULT},
103 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
104 { NULL, -1, 0},
105 };
106
107 static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
108 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
109 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
110 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
111 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
112 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
113 { "vlan+srcmac", BOND_XMIT_POLICY_VLAN_SRCMAC, 0},
114 { NULL, -1, 0},
115 };
116
117 static const struct bond_opt_value bond_arp_validate_tbl[] = {
118 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
119 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
120 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
121 { "all", BOND_ARP_VALIDATE_ALL, 0},
122 { "filter", BOND_ARP_FILTER, 0},
123 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
124 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
125 { NULL, -1, 0},
126 };
127
128 static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
129 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
130 { "all", BOND_ARP_TARGETS_ALL, 0},
131 { NULL, -1, 0},
132 };
133
134 static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
135 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
136 { "active", BOND_FOM_ACTIVE, 0},
137 { "follow", BOND_FOM_FOLLOW, 0},
138 { NULL, -1, 0},
139 };
140
141 static const struct bond_opt_value bond_intmax_tbl[] = {
142 { "off", 0, BOND_VALFLAG_DEFAULT},
143 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
144 { NULL, -1, 0}
145 };
146
147 static const struct bond_opt_value bond_lacp_active[] = {
148 { "off", 0, 0},
149 { "on", 1, BOND_VALFLAG_DEFAULT},
150 { NULL, -1, 0}
151 };
152
153 static const struct bond_opt_value bond_lacp_rate_tbl[] = {
154 { "slow", AD_LACP_SLOW, 0},
155 { "fast", AD_LACP_FAST, 0},
156 { NULL, -1, 0},
157 };
158
159 static const struct bond_opt_value bond_ad_select_tbl[] = {
160 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
161 { "bandwidth", BOND_AD_BANDWIDTH, 0},
162 { "count", BOND_AD_COUNT, 0},
163 { NULL, -1, 0},
164 };
165
166 static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
167 { "off", 0, 0},
168 { "maxval", 255, BOND_VALFLAG_MAX},
169 { "default", 1, BOND_VALFLAG_DEFAULT},
170 { NULL, -1, 0}
171 };
172
173 static const struct bond_opt_value bond_peer_notif_delay_tbl[] = {
174 { "off", 0, 0},
175 { "maxval", 300000, BOND_VALFLAG_MAX},
176 { NULL, -1, 0}
177 };
178
179 static const struct bond_opt_value bond_primary_reselect_tbl[] = {
180 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
181 { "better", BOND_PRI_RESELECT_BETTER, 0},
182 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
183 { NULL, -1},
184 };
185
186 static const struct bond_opt_value bond_use_carrier_tbl[] = {
187 { "off", 0, 0},
188 { "on", 1, BOND_VALFLAG_DEFAULT},
189 { NULL, -1, 0}
190 };
191
192 static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
193 { "off", 0, BOND_VALFLAG_DEFAULT},
194 { "on", 1, 0},
195 { NULL, -1, 0}
196 };
197
198 static const struct bond_opt_value bond_resend_igmp_tbl[] = {
199 { "off", 0, 0},
200 { "maxval", 255, BOND_VALFLAG_MAX},
201 { "default", 1, BOND_VALFLAG_DEFAULT},
202 { NULL, -1, 0}
203 };
204
205 static const struct bond_opt_value bond_lp_interval_tbl[] = {
206 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
207 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
208 { NULL, -1, 0},
209 };
210
211 static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
212 { "off", 0, 0},
213 { "on", 1, BOND_VALFLAG_DEFAULT},
214 { NULL, -1, 0}
215 };
216
217 static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
218 { "minval", 1, BOND_VALFLAG_MIN},
219 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
220 { NULL, -1, 0},
221 };
222
223 static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
224 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
225 { "maxval", 1023, BOND_VALFLAG_MAX},
226 { NULL, -1, 0},
227 };
228
229 static const struct bond_opt_value bond_missed_max_tbl[] = {
230 { "minval", 1, BOND_VALFLAG_MIN},
231 { "maxval", 255, BOND_VALFLAG_MAX},
232 { "default", 2, BOND_VALFLAG_DEFAULT},
233 { NULL, -1, 0},
234 };
235
236 static const struct bond_option bond_opts[BOND_OPT_LAST] = {
237 [BOND_OPT_MODE] = {
238 .id = BOND_OPT_MODE,
239 .name = "mode",
240 .desc = "bond device mode",
241 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
242 .values = bond_mode_tbl,
243 .set = bond_option_mode_set
244 },
245 [BOND_OPT_PACKETS_PER_SLAVE] = {
246 .id = BOND_OPT_PACKETS_PER_SLAVE,
247 .name = "packets_per_slave",
248 .desc = "Packets to send per slave in RR mode",
249 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
250 .values = bond_pps_tbl,
251 .set = bond_option_pps_set
252 },
253 [BOND_OPT_XMIT_HASH] = {
254 .id = BOND_OPT_XMIT_HASH,
255 .name = "xmit_hash_policy",
256 .desc = "balance-xor, 802.3ad, and tlb hashing method",
257 .values = bond_xmit_hashtype_tbl,
258 .set = bond_option_xmit_hash_policy_set
259 },
260 [BOND_OPT_ARP_VALIDATE] = {
261 .id = BOND_OPT_ARP_VALIDATE,
262 .name = "arp_validate",
263 .desc = "validate src/dst of ARP probes",
264 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
265 BIT(BOND_MODE_ALB),
266 .values = bond_arp_validate_tbl,
267 .set = bond_option_arp_validate_set
268 },
269 [BOND_OPT_ARP_ALL_TARGETS] = {
270 .id = BOND_OPT_ARP_ALL_TARGETS,
271 .name = "arp_all_targets",
272 .desc = "fail on any/all arp targets timeout",
273 .values = bond_arp_all_targets_tbl,
274 .set = bond_option_arp_all_targets_set
275 },
276 [BOND_OPT_FAIL_OVER_MAC] = {
277 .id = BOND_OPT_FAIL_OVER_MAC,
278 .name = "fail_over_mac",
279 .desc = "For active-backup, do not set all slaves to the same MAC",
280 .flags = BOND_OPTFLAG_NOSLAVES,
281 .values = bond_fail_over_mac_tbl,
282 .set = bond_option_fail_over_mac_set
283 },
284 [BOND_OPT_ARP_INTERVAL] = {
285 .id = BOND_OPT_ARP_INTERVAL,
286 .name = "arp_interval",
287 .desc = "arp interval in milliseconds",
288 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
289 BIT(BOND_MODE_ALB),
290 .values = bond_intmax_tbl,
291 .set = bond_option_arp_interval_set
292 },
293 [BOND_OPT_MISSED_MAX] = {
294 .id = BOND_OPT_MISSED_MAX,
295 .name = "arp_missed_max",
296 .desc = "Maximum number of missed ARP interval",
297 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
298 BIT(BOND_MODE_ALB),
299 .values = bond_missed_max_tbl,
300 .set = bond_option_missed_max_set
301 },
302 [BOND_OPT_ARP_TARGETS] = {
303 .id = BOND_OPT_ARP_TARGETS,
304 .name = "arp_ip_target",
305 .desc = "arp targets in n.n.n.n form",
306 .flags = BOND_OPTFLAG_RAWVAL,
307 .set = bond_option_arp_ip_targets_set
308 },
309 [BOND_OPT_NS_TARGETS] = {
310 .id = BOND_OPT_NS_TARGETS,
311 .name = "ns_ip6_target",
312 .desc = "NS targets in ffff:ffff::ffff:ffff form",
313 .flags = BOND_OPTFLAG_RAWVAL,
314 .set = bond_option_ns_ip6_targets_set
315 },
316 [BOND_OPT_DOWNDELAY] = {
317 .id = BOND_OPT_DOWNDELAY,
318 .name = "downdelay",
319 .desc = "Delay before considering link down, in milliseconds",
320 .values = bond_intmax_tbl,
321 .set = bond_option_downdelay_set
322 },
323 [BOND_OPT_UPDELAY] = {
324 .id = BOND_OPT_UPDELAY,
325 .name = "updelay",
326 .desc = "Delay before considering link up, in milliseconds",
327 .values = bond_intmax_tbl,
328 .set = bond_option_updelay_set
329 },
330 [BOND_OPT_LACP_ACTIVE] = {
331 .id = BOND_OPT_LACP_ACTIVE,
332 .name = "lacp_active",
333 .desc = "Send LACPDU frames with configured lacp rate or acts as speak when spoken to",
334 .flags = BOND_OPTFLAG_IFDOWN,
335 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
336 .values = bond_lacp_active,
337 .set = bond_option_lacp_active_set
338 },
339 [BOND_OPT_LACP_RATE] = {
340 .id = BOND_OPT_LACP_RATE,
341 .name = "lacp_rate",
342 .desc = "LACPDU tx rate to request from 802.3ad partner",
343 .flags = BOND_OPTFLAG_IFDOWN,
344 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
345 .values = bond_lacp_rate_tbl,
346 .set = bond_option_lacp_rate_set
347 },
348 [BOND_OPT_MINLINKS] = {
349 .id = BOND_OPT_MINLINKS,
350 .name = "min_links",
351 .desc = "Minimum number of available links before turning on carrier",
352 .values = bond_intmax_tbl,
353 .set = bond_option_min_links_set
354 },
355 [BOND_OPT_AD_SELECT] = {
356 .id = BOND_OPT_AD_SELECT,
357 .name = "ad_select",
358 .desc = "803.ad aggregation selection logic",
359 .flags = BOND_OPTFLAG_IFDOWN,
360 .values = bond_ad_select_tbl,
361 .set = bond_option_ad_select_set
362 },
363 [BOND_OPT_NUM_PEER_NOTIF] = {
364 .id = BOND_OPT_NUM_PEER_NOTIF,
365 .name = "num_unsol_na",
366 .desc = "Number of peer notifications to send on failover event",
367 .values = bond_num_peer_notif_tbl,
368 .set = bond_option_num_peer_notif_set
369 },
370 [BOND_OPT_MIIMON] = {
371 .id = BOND_OPT_MIIMON,
372 .name = "miimon",
373 .desc = "Link check interval in milliseconds",
374 .values = bond_intmax_tbl,
375 .set = bond_option_miimon_set
376 },
377 [BOND_OPT_PRIO] = {
378 .id = BOND_OPT_PRIO,
379 .name = "prio",
380 .desc = "Link priority for failover re-selection",
381 .flags = BOND_OPTFLAG_RAWVAL,
382 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
383 BIT(BOND_MODE_TLB) |
384 BIT(BOND_MODE_ALB)),
385 .set = bond_option_prio_set
386 },
387 [BOND_OPT_PRIMARY] = {
388 .id = BOND_OPT_PRIMARY,
389 .name = "primary",
390 .desc = "Primary network device to use",
391 .flags = BOND_OPTFLAG_RAWVAL,
392 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
393 BIT(BOND_MODE_TLB) |
394 BIT(BOND_MODE_ALB)),
395 .set = bond_option_primary_set
396 },
397 [BOND_OPT_PRIMARY_RESELECT] = {
398 .id = BOND_OPT_PRIMARY_RESELECT,
399 .name = "primary_reselect",
400 .desc = "Reselect primary slave once it comes up",
401 .values = bond_primary_reselect_tbl,
402 .set = bond_option_primary_reselect_set
403 },
404 [BOND_OPT_USE_CARRIER] = {
405 .id = BOND_OPT_USE_CARRIER,
406 .name = "use_carrier",
407 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
408 .values = bond_use_carrier_tbl,
409 .set = bond_option_use_carrier_set
410 },
411 [BOND_OPT_ACTIVE_SLAVE] = {
412 .id = BOND_OPT_ACTIVE_SLAVE,
413 .name = "active_slave",
414 .desc = "Currently active slave",
415 .flags = BOND_OPTFLAG_RAWVAL,
416 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
417 BIT(BOND_MODE_TLB) |
418 BIT(BOND_MODE_ALB)),
419 .set = bond_option_active_slave_set
420 },
421 [BOND_OPT_QUEUE_ID] = {
422 .id = BOND_OPT_QUEUE_ID,
423 .name = "queue_id",
424 .desc = "Set queue id of a slave",
425 .flags = BOND_OPTFLAG_RAWVAL,
426 .set = bond_option_queue_id_set
427 },
428 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
429 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
430 .name = "all_slaves_active",
431 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
432 .values = bond_all_slaves_active_tbl,
433 .set = bond_option_all_slaves_active_set
434 },
435 [BOND_OPT_RESEND_IGMP] = {
436 .id = BOND_OPT_RESEND_IGMP,
437 .name = "resend_igmp",
438 .desc = "Number of IGMP membership reports to send on link failure",
439 .values = bond_resend_igmp_tbl,
440 .set = bond_option_resend_igmp_set
441 },
442 [BOND_OPT_LP_INTERVAL] = {
443 .id = BOND_OPT_LP_INTERVAL,
444 .name = "lp_interval",
445 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
446 .values = bond_lp_interval_tbl,
447 .set = bond_option_lp_interval_set
448 },
449 [BOND_OPT_SLAVES] = {
450 .id = BOND_OPT_SLAVES,
451 .name = "slaves",
452 .desc = "Slave membership management",
453 .flags = BOND_OPTFLAG_RAWVAL,
454 .set = bond_option_slaves_set
455 },
456 [BOND_OPT_TLB_DYNAMIC_LB] = {
457 .id = BOND_OPT_TLB_DYNAMIC_LB,
458 .name = "tlb_dynamic_lb",
459 .desc = "Enable dynamic flow shuffling",
460 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB) | BIT(BOND_MODE_ALB)),
461 .values = bond_tlb_dynamic_lb_tbl,
462 .flags = BOND_OPTFLAG_IFDOWN,
463 .set = bond_option_tlb_dynamic_lb_set,
464 },
465 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
466 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
467 .name = "ad_actor_sys_prio",
468 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
469 .values = bond_ad_actor_sys_prio_tbl,
470 .set = bond_option_ad_actor_sys_prio_set,
471 },
472 [BOND_OPT_AD_ACTOR_SYSTEM] = {
473 .id = BOND_OPT_AD_ACTOR_SYSTEM,
474 .name = "ad_actor_system",
475 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
476 .flags = BOND_OPTFLAG_RAWVAL,
477 .set = bond_option_ad_actor_system_set,
478 },
479 [BOND_OPT_AD_USER_PORT_KEY] = {
480 .id = BOND_OPT_AD_USER_PORT_KEY,
481 .name = "ad_user_port_key",
482 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
483 .flags = BOND_OPTFLAG_IFDOWN,
484 .values = bond_ad_user_port_key_tbl,
485 .set = bond_option_ad_user_port_key_set,
486 },
487 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
488 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
489 .name = "num_grat_arp",
490 .desc = "Number of peer notifications to send on failover event",
491 .values = bond_num_peer_notif_tbl,
492 .set = bond_option_num_peer_notif_set
493 },
494 [BOND_OPT_PEER_NOTIF_DELAY] = {
495 .id = BOND_OPT_PEER_NOTIF_DELAY,
496 .name = "peer_notif_delay",
497 .desc = "Delay between each peer notification on failover event, in milliseconds",
498 .values = bond_peer_notif_delay_tbl,
499 .set = bond_option_peer_notif_delay_set
500 }
501 };
502
503 /* Searches for an option by name */
bond_opt_get_by_name(const char * name)504 const struct bond_option *bond_opt_get_by_name(const char *name)
505 {
506 const struct bond_option *opt;
507 int option;
508
509 for (option = 0; option < BOND_OPT_LAST; option++) {
510 opt = bond_opt_get(option);
511 if (opt && !strcmp(opt->name, name))
512 return opt;
513 }
514
515 return NULL;
516 }
517
518 /* Searches for a value in opt's values[] table */
bond_opt_get_val(unsigned int option,u64 val)519 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
520 {
521 const struct bond_option *opt;
522 int i;
523
524 opt = bond_opt_get(option);
525 if (WARN_ON(!opt))
526 return NULL;
527 for (i = 0; opt->values && opt->values[i].string; i++)
528 if (opt->values[i].value == val)
529 return &opt->values[i];
530
531 return NULL;
532 }
533
534 /* Searches for a value in opt's values[] table which matches the flagmask */
bond_opt_get_flags(const struct bond_option * opt,u32 flagmask)535 static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
536 u32 flagmask)
537 {
538 int i;
539
540 for (i = 0; opt->values && opt->values[i].string; i++)
541 if (opt->values[i].flags & flagmask)
542 return &opt->values[i];
543
544 return NULL;
545 }
546
547 /* If maxval is missing then there's no range to check. In case minval is
548 * missing then it's considered to be 0.
549 */
bond_opt_check_range(const struct bond_option * opt,u64 val)550 static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
551 {
552 const struct bond_opt_value *minval, *maxval;
553
554 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
555 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
556 if (!maxval || (minval && val < minval->value) || val > maxval->value)
557 return false;
558
559 return true;
560 }
561
562 /**
563 * bond_opt_parse - parse option value
564 * @opt: the option to parse against
565 * @val: value to parse
566 *
567 * This function tries to extract the value from @val and check if it's
568 * a possible match for the option and returns NULL if a match isn't found,
569 * or the struct_opt_value that matched. It also strips the new line from
570 * @val->string if it's present.
571 */
bond_opt_parse(const struct bond_option * opt,struct bond_opt_value * val)572 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
573 struct bond_opt_value *val)
574 {
575 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
576 const struct bond_opt_value *tbl;
577 const struct bond_opt_value *ret = NULL;
578 bool checkval;
579 int i, rv;
580
581 /* No parsing if the option wants a raw val */
582 if (opt->flags & BOND_OPTFLAG_RAWVAL)
583 return val;
584
585 tbl = opt->values;
586 if (!tbl)
587 goto out;
588
589 /* ULLONG_MAX is used to bypass string processing */
590 checkval = val->value != ULLONG_MAX;
591 if (!checkval) {
592 if (!val->string)
593 goto out;
594 p = strchr(val->string, '\n');
595 if (p)
596 *p = '\0';
597 for (p = val->string; *p; p++)
598 if (!(isdigit(*p) || isspace(*p)))
599 break;
600 /* The following code extracts the string to match or the value
601 * and sets checkval appropriately
602 */
603 if (*p) {
604 rv = sscanf(val->string, "%32s", valstr);
605 } else {
606 rv = sscanf(val->string, "%llu", &val->value);
607 checkval = true;
608 }
609 if (!rv)
610 goto out;
611 }
612
613 for (i = 0; tbl[i].string; i++) {
614 /* Check for exact match */
615 if (checkval) {
616 if (val->value == tbl[i].value)
617 ret = &tbl[i];
618 } else {
619 if (!strcmp(valstr, "default") &&
620 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
621 ret = &tbl[i];
622
623 if (!strcmp(valstr, tbl[i].string))
624 ret = &tbl[i];
625 }
626 /* Found an exact match */
627 if (ret)
628 goto out;
629 }
630 /* Possible range match */
631 if (checkval && bond_opt_check_range(opt, val->value))
632 ret = val;
633 out:
634 return ret;
635 }
636
637 /* Check opt's dependencies against bond mode and currently set options */
bond_opt_check_deps(struct bonding * bond,const struct bond_option * opt)638 static int bond_opt_check_deps(struct bonding *bond,
639 const struct bond_option *opt)
640 {
641 struct bond_params *params = &bond->params;
642
643 if (test_bit(params->mode, &opt->unsuppmodes))
644 return -EACCES;
645 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
646 return -ENOTEMPTY;
647 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
648 return -EBUSY;
649
650 return 0;
651 }
652
bond_opt_dep_print(struct bonding * bond,const struct bond_option * opt,struct nlattr * bad_attr,struct netlink_ext_ack * extack)653 static void bond_opt_dep_print(struct bonding *bond,
654 const struct bond_option *opt,
655 struct nlattr *bad_attr,
656 struct netlink_ext_ack *extack)
657 {
658 const struct bond_opt_value *modeval;
659 struct bond_params *params;
660
661 params = &bond->params;
662 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
663 if (test_bit(params->mode, &opt->unsuppmodes)) {
664 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
665 opt->name, modeval->string, modeval->value);
666 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
667 "option not supported in mode");
668 }
669 }
670
bond_opt_error_interpret(struct bonding * bond,const struct bond_option * opt,int error,const struct bond_opt_value * val,struct nlattr * bad_attr,struct netlink_ext_ack * extack)671 static void bond_opt_error_interpret(struct bonding *bond,
672 const struct bond_option *opt,
673 int error, const struct bond_opt_value *val,
674 struct nlattr *bad_attr,
675 struct netlink_ext_ack *extack)
676 {
677 const struct bond_opt_value *minval, *maxval;
678 char *p;
679
680 switch (error) {
681 case -EINVAL:
682 NL_SET_ERR_MSG_ATTR(extack, bad_attr, "invalid option value");
683 if (val) {
684 if (val->string) {
685 /* sometimes RAWVAL opts may have new lines */
686 p = strchr(val->string, '\n');
687 if (p)
688 *p = '\0';
689 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
690 opt->name, val->string);
691 } else {
692 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
693 opt->name, val->value);
694 }
695 }
696 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
697 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
698 if (!maxval)
699 break;
700 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
701 opt->name, minval ? minval->value : 0, maxval->value);
702 break;
703 case -EACCES:
704 bond_opt_dep_print(bond, opt, bad_attr, extack);
705 break;
706 case -ENOTEMPTY:
707 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
708 "unable to set option because the bond device has slaves");
709 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
710 opt->name);
711 break;
712 case -EBUSY:
713 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
714 "unable to set option because the bond is up");
715 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
716 opt->name);
717 break;
718 case -ENODEV:
719 if (val && val->string) {
720 p = strchr(val->string, '\n');
721 if (p)
722 *p = '\0';
723 netdev_err(bond->dev, "option %s: interface %s does not exist!\n",
724 opt->name, val->string);
725 NL_SET_ERR_MSG_ATTR(extack, bad_attr,
726 "interface does not exist");
727 }
728 break;
729 default:
730 break;
731 }
732 }
733
734 /**
735 * __bond_opt_set - set a bonding option
736 * @bond: target bond device
737 * @option: option to set
738 * @val: value to set it to
739 * @bad_attr: netlink attribue that caused the error
740 * @extack: extended netlink error structure, used when an error message
741 * needs to be returned to the caller via netlink
742 *
743 * This function is used to change the bond's option value, it can be
744 * used for both enabling/changing an option and for disabling it. RTNL lock
745 * must be obtained before calling this function.
746 */
__bond_opt_set(struct bonding * bond,unsigned int option,struct bond_opt_value * val,struct nlattr * bad_attr,struct netlink_ext_ack * extack)747 int __bond_opt_set(struct bonding *bond,
748 unsigned int option, struct bond_opt_value *val,
749 struct nlattr *bad_attr, struct netlink_ext_ack *extack)
750 {
751 const struct bond_opt_value *retval = NULL;
752 const struct bond_option *opt;
753 int ret = -ENOENT;
754
755 ASSERT_RTNL();
756
757 opt = bond_opt_get(option);
758 if (WARN_ON(!val) || WARN_ON(!opt))
759 goto out;
760 ret = bond_opt_check_deps(bond, opt);
761 if (ret)
762 goto out;
763 retval = bond_opt_parse(opt, val);
764 if (!retval) {
765 ret = -EINVAL;
766 goto out;
767 }
768 ret = opt->set(bond, retval);
769 out:
770 if (ret)
771 bond_opt_error_interpret(bond, opt, ret, val, bad_attr, extack);
772
773 return ret;
774 }
775 /**
776 * __bond_opt_set_notify - set a bonding option
777 * @bond: target bond device
778 * @option: option to set
779 * @val: value to set it to
780 *
781 * This function is used to change the bond's option value and trigger
782 * a notification to user sapce. It can be used for both enabling/changing
783 * an option and for disabling it. RTNL lock must be obtained before calling
784 * this function.
785 */
__bond_opt_set_notify(struct bonding * bond,unsigned int option,struct bond_opt_value * val)786 int __bond_opt_set_notify(struct bonding *bond,
787 unsigned int option, struct bond_opt_value *val)
788 {
789 int ret;
790
791 ASSERT_RTNL();
792
793 ret = __bond_opt_set(bond, option, val, NULL, NULL);
794
795 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
796 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
797
798 return ret;
799 }
800
801 /**
802 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
803 * @bond: target bond device
804 * @option: option to set
805 * @buf: value to set it to
806 *
807 * This function tries to acquire RTNL without blocking and if successful
808 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
809 */
bond_opt_tryset_rtnl(struct bonding * bond,unsigned int option,char * buf)810 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
811 {
812 struct bond_opt_value optval;
813 int ret;
814
815 if (!rtnl_trylock())
816 return restart_syscall();
817 bond_opt_initstr(&optval, buf);
818 ret = __bond_opt_set_notify(bond, option, &optval);
819 rtnl_unlock();
820
821 return ret;
822 }
823
824 /**
825 * bond_opt_get - get a pointer to an option
826 * @option: option for which to return a pointer
827 *
828 * This function checks if option is valid and if so returns a pointer
829 * to its entry in the bond_opts[] option array.
830 */
bond_opt_get(unsigned int option)831 const struct bond_option *bond_opt_get(unsigned int option)
832 {
833 if (!BOND_OPT_VALID(option))
834 return NULL;
835
836 return &bond_opts[option];
837 }
838
bond_set_xfrm_features(struct bonding * bond)839 static bool bond_set_xfrm_features(struct bonding *bond)
840 {
841 if (!IS_ENABLED(CONFIG_XFRM_OFFLOAD))
842 return false;
843
844 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
845 bond->dev->wanted_features |= BOND_XFRM_FEATURES;
846 else
847 bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
848
849 return true;
850 }
851
bond_option_mode_set(struct bonding * bond,const struct bond_opt_value * newval)852 static int bond_option_mode_set(struct bonding *bond,
853 const struct bond_opt_value *newval)
854 {
855 if (!bond_mode_uses_arp(newval->value)) {
856 if (bond->params.arp_interval) {
857 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
858 newval->string);
859 /* disable arp monitoring */
860 bond->params.arp_interval = 0;
861 }
862
863 if (!bond->params.miimon) {
864 /* set miimon to default value */
865 bond->params.miimon = BOND_DEFAULT_MIIMON;
866 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n",
867 bond->params.miimon);
868 }
869 }
870
871 if (newval->value == BOND_MODE_ALB)
872 bond->params.tlb_dynamic_lb = 1;
873
874 /* don't cache arp_validate between modes */
875 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
876 bond->params.mode = newval->value;
877
878 if (bond->dev->reg_state == NETREG_REGISTERED) {
879 bool update = false;
880
881 update |= bond_set_xfrm_features(bond);
882
883 if (update)
884 netdev_update_features(bond->dev);
885 }
886
887 bond_xdp_set_features(bond->dev);
888
889 return 0;
890 }
891
bond_option_active_slave_set(struct bonding * bond,const struct bond_opt_value * newval)892 static int bond_option_active_slave_set(struct bonding *bond,
893 const struct bond_opt_value *newval)
894 {
895 char ifname[IFNAMSIZ] = { 0, };
896 struct net_device *slave_dev;
897 int ret = 0;
898
899 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
900 if (!strlen(ifname) || newval->string[0] == '\n') {
901 slave_dev = NULL;
902 } else {
903 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
904 if (!slave_dev)
905 return -ENODEV;
906 }
907
908 if (slave_dev) {
909 if (!netif_is_bond_slave(slave_dev)) {
910 slave_err(bond->dev, slave_dev, "Device is not bonding slave\n");
911 return -EINVAL;
912 }
913
914 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
915 slave_err(bond->dev, slave_dev, "Device is not our slave\n");
916 return -EINVAL;
917 }
918 }
919
920 block_netpoll_tx();
921 /* check to see if we are clearing active */
922 if (!slave_dev) {
923 netdev_dbg(bond->dev, "Clearing current active slave\n");
924 bond_change_active_slave(bond, NULL);
925 bond_select_active_slave(bond);
926 } else {
927 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
928 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
929
930 BUG_ON(!new_active);
931
932 if (new_active == old_active) {
933 /* do nothing */
934 slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n");
935 } else {
936 if (old_active && (new_active->link == BOND_LINK_UP) &&
937 bond_slave_is_up(new_active)) {
938 slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n");
939 bond_change_active_slave(bond, new_active);
940 } else {
941 slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n",
942 new_active->dev->name);
943 ret = -EINVAL;
944 }
945 }
946 }
947 unblock_netpoll_tx();
948
949 return ret;
950 }
951
952 /* There are two tricky bits here. First, if MII monitoring is activated, then
953 * we must disable ARP monitoring. Second, if the timer isn't running, we must
954 * start it.
955 */
bond_option_miimon_set(struct bonding * bond,const struct bond_opt_value * newval)956 static int bond_option_miimon_set(struct bonding *bond,
957 const struct bond_opt_value *newval)
958 {
959 netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n",
960 newval->value);
961 bond->params.miimon = newval->value;
962 if (bond->params.updelay)
963 netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
964 bond->params.updelay * bond->params.miimon);
965 if (bond->params.downdelay)
966 netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
967 bond->params.downdelay * bond->params.miimon);
968 if (bond->params.peer_notif_delay)
969 netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n",
970 bond->params.peer_notif_delay * bond->params.miimon);
971 if (newval->value && bond->params.arp_interval) {
972 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
973 bond->params.arp_interval = 0;
974 if (bond->params.arp_validate)
975 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
976 }
977 if (bond->dev->flags & IFF_UP) {
978 /* If the interface is up, we may need to fire off
979 * the MII timer. If the interface is down, the
980 * timer will get fired off when the open function
981 * is called.
982 */
983 if (!newval->value) {
984 cancel_delayed_work_sync(&bond->mii_work);
985 } else {
986 cancel_delayed_work_sync(&bond->arp_work);
987 queue_delayed_work(bond->wq, &bond->mii_work, 0);
988 }
989 }
990
991 return 0;
992 }
993
994 /* Set up, down and peer notification delays. These must be multiples
995 * of the MII monitoring value, and are stored internally as the
996 * multiplier. Thus, we must translate to MS for the real world.
997 */
_bond_option_delay_set(struct bonding * bond,const struct bond_opt_value * newval,const char * name,int * target)998 static int _bond_option_delay_set(struct bonding *bond,
999 const struct bond_opt_value *newval,
1000 const char *name,
1001 int *target)
1002 {
1003 int value = newval->value;
1004
1005 if (!bond->params.miimon) {
1006 netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n",
1007 name);
1008 return -EPERM;
1009 }
1010 if ((value % bond->params.miimon) != 0) {
1011 netdev_warn(bond->dev,
1012 "%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n",
1013 name,
1014 value, bond->params.miimon,
1015 (value / bond->params.miimon) *
1016 bond->params.miimon);
1017 }
1018 *target = value / bond->params.miimon;
1019 netdev_dbg(bond->dev, "Setting %s to %d\n",
1020 name,
1021 *target * bond->params.miimon);
1022
1023 return 0;
1024 }
1025
bond_option_updelay_set(struct bonding * bond,const struct bond_opt_value * newval)1026 static int bond_option_updelay_set(struct bonding *bond,
1027 const struct bond_opt_value *newval)
1028 {
1029 return _bond_option_delay_set(bond, newval, "up delay",
1030 &bond->params.updelay);
1031 }
1032
bond_option_downdelay_set(struct bonding * bond,const struct bond_opt_value * newval)1033 static int bond_option_downdelay_set(struct bonding *bond,
1034 const struct bond_opt_value *newval)
1035 {
1036 return _bond_option_delay_set(bond, newval, "down delay",
1037 &bond->params.downdelay);
1038 }
1039
bond_option_peer_notif_delay_set(struct bonding * bond,const struct bond_opt_value * newval)1040 static int bond_option_peer_notif_delay_set(struct bonding *bond,
1041 const struct bond_opt_value *newval)
1042 {
1043 int ret = _bond_option_delay_set(bond, newval,
1044 "peer notification delay",
1045 &bond->params.peer_notif_delay);
1046 return ret;
1047 }
1048
bond_option_use_carrier_set(struct bonding * bond,const struct bond_opt_value * newval)1049 static int bond_option_use_carrier_set(struct bonding *bond,
1050 const struct bond_opt_value *newval)
1051 {
1052 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n",
1053 newval->value);
1054 bond->params.use_carrier = newval->value;
1055
1056 return 0;
1057 }
1058
1059 /* There are two tricky bits here. First, if ARP monitoring is activated, then
1060 * we must disable MII monitoring. Second, if the ARP timer isn't running,
1061 * we must start it.
1062 */
bond_option_arp_interval_set(struct bonding * bond,const struct bond_opt_value * newval)1063 static int bond_option_arp_interval_set(struct bonding *bond,
1064 const struct bond_opt_value *newval)
1065 {
1066 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n",
1067 newval->value);
1068 bond->params.arp_interval = newval->value;
1069 if (newval->value) {
1070 if (bond->params.miimon) {
1071 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
1072 bond->params.miimon = 0;
1073 }
1074 if (!bond->params.arp_targets[0])
1075 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
1076 }
1077 if (bond->dev->flags & IFF_UP) {
1078 /* If the interface is up, we may need to fire off
1079 * the ARP timer. If the interface is down, the
1080 * timer will get fired off when the open function
1081 * is called.
1082 */
1083 if (!newval->value) {
1084 if (bond->params.arp_validate)
1085 bond->recv_probe = NULL;
1086 cancel_delayed_work_sync(&bond->arp_work);
1087 } else {
1088 /* arp_validate can be set only in active-backup mode */
1089 bond->recv_probe = bond_rcv_validate;
1090 cancel_delayed_work_sync(&bond->mii_work);
1091 queue_delayed_work(bond->wq, &bond->arp_work, 0);
1092 }
1093 }
1094
1095 return 0;
1096 }
1097
_bond_options_arp_ip_target_set(struct bonding * bond,int slot,__be32 target,unsigned long last_rx)1098 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
1099 __be32 target,
1100 unsigned long last_rx)
1101 {
1102 __be32 *targets = bond->params.arp_targets;
1103 struct list_head *iter;
1104 struct slave *slave;
1105
1106 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
1107 bond_for_each_slave(bond, slave, iter)
1108 slave->target_last_arp_rx[slot] = last_rx;
1109 targets[slot] = target;
1110 }
1111 }
1112
_bond_option_arp_ip_target_add(struct bonding * bond,__be32 target)1113 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1114 {
1115 __be32 *targets = bond->params.arp_targets;
1116 int ind;
1117
1118 if (!bond_is_ip_target_ok(target)) {
1119 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
1120 &target);
1121 return -EINVAL;
1122 }
1123
1124 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
1125 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
1126 &target);
1127 return -EINVAL;
1128 }
1129
1130 ind = bond_get_targets_ip(targets, 0); /* first free slot */
1131 if (ind == -1) {
1132 netdev_err(bond->dev, "ARP target table is full!\n");
1133 return -EINVAL;
1134 }
1135
1136 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
1137
1138 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
1139
1140 return 0;
1141 }
1142
bond_option_arp_ip_target_add(struct bonding * bond,__be32 target)1143 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1144 {
1145 return _bond_option_arp_ip_target_add(bond, target);
1146 }
1147
bond_option_arp_ip_target_rem(struct bonding * bond,__be32 target)1148 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
1149 {
1150 __be32 *targets = bond->params.arp_targets;
1151 struct list_head *iter;
1152 struct slave *slave;
1153 unsigned long *targets_rx;
1154 int ind, i;
1155
1156 if (!bond_is_ip_target_ok(target)) {
1157 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1158 &target);
1159 return -EINVAL;
1160 }
1161
1162 ind = bond_get_targets_ip(targets, target);
1163 if (ind == -1) {
1164 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1165 &target);
1166 return -EINVAL;
1167 }
1168
1169 if (ind == 0 && !targets[1] && bond->params.arp_interval)
1170 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
1171
1172 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
1173
1174 bond_for_each_slave(bond, slave, iter) {
1175 targets_rx = slave->target_last_arp_rx;
1176 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1177 targets_rx[i] = targets_rx[i+1];
1178 targets_rx[i] = 0;
1179 }
1180 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1181 targets[i] = targets[i+1];
1182 targets[i] = 0;
1183
1184 return 0;
1185 }
1186
bond_option_arp_ip_targets_clear(struct bonding * bond)1187 void bond_option_arp_ip_targets_clear(struct bonding *bond)
1188 {
1189 int i;
1190
1191 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1192 _bond_options_arp_ip_target_set(bond, i, 0, 0);
1193 }
1194
bond_option_arp_ip_targets_set(struct bonding * bond,const struct bond_opt_value * newval)1195 static int bond_option_arp_ip_targets_set(struct bonding *bond,
1196 const struct bond_opt_value *newval)
1197 {
1198 int ret = -EPERM;
1199 __be32 target;
1200
1201 if (newval->string) {
1202 if (strlen(newval->string) < 1 ||
1203 !in4_pton(newval->string + 1, -1, (u8 *)&target, -1, NULL)) {
1204 netdev_err(bond->dev, "invalid ARP target specified\n");
1205 return ret;
1206 }
1207 if (newval->string[0] == '+')
1208 ret = bond_option_arp_ip_target_add(bond, target);
1209 else if (newval->string[0] == '-')
1210 ret = bond_option_arp_ip_target_rem(bond, target);
1211 else
1212 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
1213 } else {
1214 target = newval->value;
1215 ret = bond_option_arp_ip_target_add(bond, target);
1216 }
1217
1218 return ret;
1219 }
1220
1221 #if IS_ENABLED(CONFIG_IPV6)
slave_can_set_ns_maddr(const struct bonding * bond,struct slave * slave)1222 static bool slave_can_set_ns_maddr(const struct bonding *bond, struct slave *slave)
1223 {
1224 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
1225 !bond_is_active_slave(slave) &&
1226 slave->dev->flags & IFF_MULTICAST;
1227 }
1228
1229 /**
1230 * slave_set_ns_maddrs - add/del all NS mac addresses for slave
1231 * @bond: bond device
1232 * @slave: slave device
1233 * @add: add or remove all the NS mac addresses
1234 *
1235 * This function tries to add or delete all the NS mac addresses on the slave
1236 *
1237 * Note, the IPv6 NS target address is the unicast address in Neighbor
1238 * Solicitation (NS) message. The dest address of NS message should be
1239 * solicited-node multicast address of the target. The dest mac of NS message
1240 * is converted from the solicited-node multicast address.
1241 *
1242 * This function is called when
1243 * * arp_validate changes
1244 * * enslaving, releasing new slaves
1245 */
slave_set_ns_maddrs(struct bonding * bond,struct slave * slave,bool add)1246 static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add)
1247 {
1248 struct in6_addr *targets = bond->params.ns_targets;
1249 char slot_maddr[MAX_ADDR_LEN];
1250 struct in6_addr mcaddr;
1251 int i;
1252
1253 if (!slave_can_set_ns_maddr(bond, slave))
1254 return;
1255
1256 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) {
1257 if (ipv6_addr_any(&targets[i]))
1258 break;
1259
1260 addrconf_addr_solict_mult(&targets[i], &mcaddr);
1261 if (!ndisc_mc_map(&mcaddr, slot_maddr, slave->dev, 0)) {
1262 if (add)
1263 dev_mc_add(slave->dev, slot_maddr);
1264 else
1265 dev_mc_del(slave->dev, slot_maddr);
1266 }
1267 }
1268 }
1269
bond_slave_ns_maddrs_add(struct bonding * bond,struct slave * slave)1270 void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave)
1271 {
1272 if (!bond->params.arp_validate)
1273 return;
1274 slave_set_ns_maddrs(bond, slave, true);
1275 }
1276
bond_slave_ns_maddrs_del(struct bonding * bond,struct slave * slave)1277 void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave)
1278 {
1279 if (!bond->params.arp_validate)
1280 return;
1281 slave_set_ns_maddrs(bond, slave, false);
1282 }
1283
1284 /**
1285 * slave_set_ns_maddr - set new NS mac address for slave
1286 * @bond: bond device
1287 * @slave: slave device
1288 * @target: the new IPv6 target
1289 * @slot: the old IPv6 target in the slot
1290 *
1291 * This function tries to replace the old mac address to new one on the slave.
1292 *
1293 * Note, the target/slot IPv6 address is the unicast address in Neighbor
1294 * Solicitation (NS) message. The dest address of NS message should be
1295 * solicited-node multicast address of the target. The dest mac of NS message
1296 * is converted from the solicited-node multicast address.
1297 *
1298 * This function is called when
1299 * * An IPv6 NS target is added or removed.
1300 */
slave_set_ns_maddr(struct bonding * bond,struct slave * slave,struct in6_addr * target,struct in6_addr * slot)1301 static void slave_set_ns_maddr(struct bonding *bond, struct slave *slave,
1302 struct in6_addr *target, struct in6_addr *slot)
1303 {
1304 char mac_addr[MAX_ADDR_LEN];
1305 struct in6_addr mcast_addr;
1306
1307 if (!bond->params.arp_validate || !slave_can_set_ns_maddr(bond, slave))
1308 return;
1309
1310 /* remove the previous mac addr from slave */
1311 addrconf_addr_solict_mult(slot, &mcast_addr);
1312 if (!ipv6_addr_any(slot) &&
1313 !ndisc_mc_map(&mcast_addr, mac_addr, slave->dev, 0))
1314 dev_mc_del(slave->dev, mac_addr);
1315
1316 /* add new mac addr on slave if target is set */
1317 addrconf_addr_solict_mult(target, &mcast_addr);
1318 if (!ipv6_addr_any(target) &&
1319 !ndisc_mc_map(&mcast_addr, mac_addr, slave->dev, 0))
1320 dev_mc_add(slave->dev, mac_addr);
1321 }
1322
_bond_options_ns_ip6_target_set(struct bonding * bond,int slot,struct in6_addr * target,unsigned long last_rx)1323 static void _bond_options_ns_ip6_target_set(struct bonding *bond, int slot,
1324 struct in6_addr *target,
1325 unsigned long last_rx)
1326 {
1327 struct in6_addr *targets = bond->params.ns_targets;
1328 struct list_head *iter;
1329 struct slave *slave;
1330
1331 if (slot >= 0 && slot < BOND_MAX_NS_TARGETS) {
1332 bond_for_each_slave(bond, slave, iter) {
1333 slave->target_last_arp_rx[slot] = last_rx;
1334 slave_set_ns_maddr(bond, slave, target, &targets[slot]);
1335 }
1336 targets[slot] = *target;
1337 }
1338 }
1339
bond_option_ns_ip6_targets_clear(struct bonding * bond)1340 void bond_option_ns_ip6_targets_clear(struct bonding *bond)
1341 {
1342 struct in6_addr addr_any = in6addr_any;
1343 int i;
1344
1345 for (i = 0; i < BOND_MAX_NS_TARGETS; i++)
1346 _bond_options_ns_ip6_target_set(bond, i, &addr_any, 0);
1347 }
1348
bond_option_ns_ip6_targets_set(struct bonding * bond,const struct bond_opt_value * newval)1349 static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1350 const struct bond_opt_value *newval)
1351 {
1352 struct in6_addr *target = (struct in6_addr *)newval->extra;
1353 struct in6_addr *targets = bond->params.ns_targets;
1354 struct in6_addr addr_any = in6addr_any;
1355 int index;
1356
1357 if (!bond_is_ip6_target_ok(target)) {
1358 netdev_err(bond->dev, "invalid NS target %pI6c specified for addition\n",
1359 target);
1360 return -EINVAL;
1361 }
1362
1363 if (bond_get_targets_ip6(targets, target) != -1) { /* dup */
1364 netdev_err(bond->dev, "NS target %pI6c is already present\n",
1365 target);
1366 return -EINVAL;
1367 }
1368
1369 index = bond_get_targets_ip6(targets, &addr_any); /* first free slot */
1370 if (index == -1) {
1371 netdev_err(bond->dev, "NS target table is full!\n");
1372 return -EINVAL;
1373 }
1374
1375 netdev_dbg(bond->dev, "Adding NS target %pI6c\n", target);
1376
1377 _bond_options_ns_ip6_target_set(bond, index, target, jiffies);
1378
1379 return 0;
1380 }
1381 #else
bond_option_ns_ip6_targets_set(struct bonding * bond,const struct bond_opt_value * newval)1382 static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1383 const struct bond_opt_value *newval)
1384 {
1385 return -EPERM;
1386 }
1387
slave_set_ns_maddrs(struct bonding * bond,struct slave * slave,bool add)1388 static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add) {}
1389
bond_slave_ns_maddrs_add(struct bonding * bond,struct slave * slave)1390 void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave) {}
1391
bond_slave_ns_maddrs_del(struct bonding * bond,struct slave * slave)1392 void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave) {}
1393 #endif
1394
bond_option_arp_validate_set(struct bonding * bond,const struct bond_opt_value * newval)1395 static int bond_option_arp_validate_set(struct bonding *bond,
1396 const struct bond_opt_value *newval)
1397 {
1398 bool changed = !!bond->params.arp_validate != !!newval->value;
1399 struct list_head *iter;
1400 struct slave *slave;
1401
1402 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n",
1403 newval->string, newval->value);
1404 bond->params.arp_validate = newval->value;
1405
1406 if (changed) {
1407 bond_for_each_slave(bond, slave, iter)
1408 slave_set_ns_maddrs(bond, slave, !!bond->params.arp_validate);
1409 }
1410
1411 return 0;
1412 }
1413
bond_option_arp_all_targets_set(struct bonding * bond,const struct bond_opt_value * newval)1414 static int bond_option_arp_all_targets_set(struct bonding *bond,
1415 const struct bond_opt_value *newval)
1416 {
1417 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1418 newval->string, newval->value);
1419 bond->params.arp_all_targets = newval->value;
1420
1421 return 0;
1422 }
1423
bond_option_missed_max_set(struct bonding * bond,const struct bond_opt_value * newval)1424 static int bond_option_missed_max_set(struct bonding *bond,
1425 const struct bond_opt_value *newval)
1426 {
1427 netdev_dbg(bond->dev, "Setting missed max to %s (%llu)\n",
1428 newval->string, newval->value);
1429 bond->params.missed_max = newval->value;
1430
1431 return 0;
1432 }
1433
bond_option_prio_set(struct bonding * bond,const struct bond_opt_value * newval)1434 static int bond_option_prio_set(struct bonding *bond,
1435 const struct bond_opt_value *newval)
1436 {
1437 struct slave *slave;
1438
1439 slave = bond_slave_get_rtnl(newval->slave_dev);
1440 if (!slave) {
1441 netdev_dbg(newval->slave_dev, "%s called on NULL slave\n", __func__);
1442 return -ENODEV;
1443 }
1444 slave->prio = newval->value;
1445
1446 if (rtnl_dereference(bond->primary_slave))
1447 slave_warn(bond->dev, slave->dev,
1448 "prio updated, but will not affect failover re-selection as primary slave have been set\n");
1449 else
1450 bond_select_active_slave(bond);
1451
1452 return 0;
1453 }
1454
bond_option_primary_set(struct bonding * bond,const struct bond_opt_value * newval)1455 static int bond_option_primary_set(struct bonding *bond,
1456 const struct bond_opt_value *newval)
1457 {
1458 char *p, *primary = newval->string;
1459 struct list_head *iter;
1460 struct slave *slave;
1461
1462 block_netpoll_tx();
1463
1464 p = strchr(primary, '\n');
1465 if (p)
1466 *p = '\0';
1467 /* check to see if we are clearing primary */
1468 if (!strlen(primary)) {
1469 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1470 RCU_INIT_POINTER(bond->primary_slave, NULL);
1471 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1472 bond_select_active_slave(bond);
1473 goto out;
1474 }
1475
1476 bond_for_each_slave(bond, slave, iter) {
1477 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
1478 slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n");
1479 rcu_assign_pointer(bond->primary_slave, slave);
1480 strcpy(bond->params.primary, slave->dev->name);
1481 bond->force_primary = true;
1482 bond_select_active_slave(bond);
1483 goto out;
1484 }
1485 }
1486
1487 if (rtnl_dereference(bond->primary_slave)) {
1488 netdev_dbg(bond->dev, "Setting primary slave to None\n");
1489 RCU_INIT_POINTER(bond->primary_slave, NULL);
1490 bond_select_active_slave(bond);
1491 }
1492 strscpy_pad(bond->params.primary, primary, IFNAMSIZ);
1493
1494 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n",
1495 primary);
1496
1497 out:
1498 unblock_netpoll_tx();
1499
1500 return 0;
1501 }
1502
bond_option_primary_reselect_set(struct bonding * bond,const struct bond_opt_value * newval)1503 static int bond_option_primary_reselect_set(struct bonding *bond,
1504 const struct bond_opt_value *newval)
1505 {
1506 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1507 newval->string, newval->value);
1508 bond->params.primary_reselect = newval->value;
1509
1510 block_netpoll_tx();
1511 bond_select_active_slave(bond);
1512 unblock_netpoll_tx();
1513
1514 return 0;
1515 }
1516
bond_option_fail_over_mac_set(struct bonding * bond,const struct bond_opt_value * newval)1517 static int bond_option_fail_over_mac_set(struct bonding *bond,
1518 const struct bond_opt_value *newval)
1519 {
1520 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1521 newval->string, newval->value);
1522 bond->params.fail_over_mac = newval->value;
1523
1524 return 0;
1525 }
1526
bond_option_xmit_hash_policy_set(struct bonding * bond,const struct bond_opt_value * newval)1527 static int bond_option_xmit_hash_policy_set(struct bonding *bond,
1528 const struct bond_opt_value *newval)
1529 {
1530 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1531 newval->string, newval->value);
1532 bond->params.xmit_policy = newval->value;
1533
1534 return 0;
1535 }
1536
bond_option_resend_igmp_set(struct bonding * bond,const struct bond_opt_value * newval)1537 static int bond_option_resend_igmp_set(struct bonding *bond,
1538 const struct bond_opt_value *newval)
1539 {
1540 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n",
1541 newval->value);
1542 bond->params.resend_igmp = newval->value;
1543
1544 return 0;
1545 }
1546
bond_option_num_peer_notif_set(struct bonding * bond,const struct bond_opt_value * newval)1547 static int bond_option_num_peer_notif_set(struct bonding *bond,
1548 const struct bond_opt_value *newval)
1549 {
1550 bond->params.num_peer_notif = newval->value;
1551
1552 return 0;
1553 }
1554
bond_option_all_slaves_active_set(struct bonding * bond,const struct bond_opt_value * newval)1555 static int bond_option_all_slaves_active_set(struct bonding *bond,
1556 const struct bond_opt_value *newval)
1557 {
1558 struct list_head *iter;
1559 struct slave *slave;
1560
1561 if (newval->value == bond->params.all_slaves_active)
1562 return 0;
1563 bond->params.all_slaves_active = newval->value;
1564 bond_for_each_slave(bond, slave, iter) {
1565 if (!bond_is_active_slave(slave)) {
1566 if (newval->value)
1567 slave->inactive = 0;
1568 else
1569 slave->inactive = 1;
1570 }
1571 }
1572
1573 return 0;
1574 }
1575
bond_option_min_links_set(struct bonding * bond,const struct bond_opt_value * newval)1576 static int bond_option_min_links_set(struct bonding *bond,
1577 const struct bond_opt_value *newval)
1578 {
1579 netdev_dbg(bond->dev, "Setting min links value to %llu\n",
1580 newval->value);
1581 bond->params.min_links = newval->value;
1582 bond_set_carrier(bond);
1583
1584 return 0;
1585 }
1586
bond_option_lp_interval_set(struct bonding * bond,const struct bond_opt_value * newval)1587 static int bond_option_lp_interval_set(struct bonding *bond,
1588 const struct bond_opt_value *newval)
1589 {
1590 bond->params.lp_interval = newval->value;
1591
1592 return 0;
1593 }
1594
bond_option_pps_set(struct bonding * bond,const struct bond_opt_value * newval)1595 static int bond_option_pps_set(struct bonding *bond,
1596 const struct bond_opt_value *newval)
1597 {
1598 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n",
1599 newval->value);
1600 bond->params.packets_per_slave = newval->value;
1601 if (newval->value > 0) {
1602 bond->params.reciprocal_packets_per_slave =
1603 reciprocal_value(newval->value);
1604 } else {
1605 /* reciprocal_packets_per_slave is unused if
1606 * packets_per_slave is 0 or 1, just initialize it
1607 */
1608 bond->params.reciprocal_packets_per_slave =
1609 (struct reciprocal_value) { 0 };
1610 }
1611
1612 return 0;
1613 }
1614
bond_option_lacp_active_set(struct bonding * bond,const struct bond_opt_value * newval)1615 static int bond_option_lacp_active_set(struct bonding *bond,
1616 const struct bond_opt_value *newval)
1617 {
1618 netdev_dbg(bond->dev, "Setting LACP active to %s (%llu)\n",
1619 newval->string, newval->value);
1620 bond->params.lacp_active = newval->value;
1621
1622 return 0;
1623 }
1624
bond_option_lacp_rate_set(struct bonding * bond,const struct bond_opt_value * newval)1625 static int bond_option_lacp_rate_set(struct bonding *bond,
1626 const struct bond_opt_value *newval)
1627 {
1628 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n",
1629 newval->string, newval->value);
1630 bond->params.lacp_fast = newval->value;
1631 bond_3ad_update_lacp_rate(bond);
1632
1633 return 0;
1634 }
1635
bond_option_ad_select_set(struct bonding * bond,const struct bond_opt_value * newval)1636 static int bond_option_ad_select_set(struct bonding *bond,
1637 const struct bond_opt_value *newval)
1638 {
1639 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n",
1640 newval->string, newval->value);
1641 bond->params.ad_select = newval->value;
1642
1643 return 0;
1644 }
1645
bond_option_queue_id_set(struct bonding * bond,const struct bond_opt_value * newval)1646 static int bond_option_queue_id_set(struct bonding *bond,
1647 const struct bond_opt_value *newval)
1648 {
1649 struct slave *slave, *update_slave;
1650 struct net_device *sdev;
1651 struct list_head *iter;
1652 char *delim;
1653 int ret = 0;
1654 u16 qid;
1655
1656 /* delim will point to queue id if successful */
1657 delim = strchr(newval->string, ':');
1658 if (!delim)
1659 goto err_no_cmd;
1660
1661 /* Terminate string that points to device name and bump it
1662 * up one, so we can read the queue id there.
1663 */
1664 *delim = '\0';
1665 if (sscanf(++delim, "%hd\n", &qid) != 1)
1666 goto err_no_cmd;
1667
1668 /* Check buffer length, valid ifname and queue id */
1669 if (!dev_valid_name(newval->string) ||
1670 qid > bond->dev->real_num_tx_queues)
1671 goto err_no_cmd;
1672
1673 /* Get the pointer to that interface if it exists */
1674 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1675 if (!sdev)
1676 goto err_no_cmd;
1677
1678 /* Search for thes slave and check for duplicate qids */
1679 update_slave = NULL;
1680 bond_for_each_slave(bond, slave, iter) {
1681 if (sdev == slave->dev)
1682 /* We don't need to check the matching
1683 * slave for dups, since we're overwriting it
1684 */
1685 update_slave = slave;
1686 else if (qid && qid == slave->queue_id) {
1687 goto err_no_cmd;
1688 }
1689 }
1690
1691 if (!update_slave)
1692 goto err_no_cmd;
1693
1694 /* Actually set the qids for the slave */
1695 update_slave->queue_id = qid;
1696
1697 out:
1698 return ret;
1699
1700 err_no_cmd:
1701 netdev_dbg(bond->dev, "invalid input for queue_id set\n");
1702 ret = -EPERM;
1703 goto out;
1704
1705 }
1706
bond_option_slaves_set(struct bonding * bond,const struct bond_opt_value * newval)1707 static int bond_option_slaves_set(struct bonding *bond,
1708 const struct bond_opt_value *newval)
1709 {
1710 char command[IFNAMSIZ + 1] = { 0, };
1711 struct net_device *dev;
1712 char *ifname;
1713 int ret;
1714
1715 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1716 ifname = command + 1;
1717 if ((strlen(command) <= 1) ||
1718 (command[0] != '+' && command[0] != '-') ||
1719 !dev_valid_name(ifname))
1720 goto err_no_cmd;
1721
1722 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1723 if (!dev) {
1724 netdev_dbg(bond->dev, "interface %s does not exist!\n",
1725 ifname);
1726 ret = -ENODEV;
1727 goto out;
1728 }
1729
1730 switch (command[0]) {
1731 case '+':
1732 slave_dbg(bond->dev, dev, "Enslaving interface\n");
1733 ret = bond_enslave(bond->dev, dev, NULL);
1734 break;
1735
1736 case '-':
1737 slave_dbg(bond->dev, dev, "Releasing interface\n");
1738 ret = bond_release(bond->dev, dev);
1739 break;
1740
1741 default:
1742 /* should not run here. */
1743 goto err_no_cmd;
1744 }
1745
1746 out:
1747 return ret;
1748
1749 err_no_cmd:
1750 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
1751 ret = -EPERM;
1752 goto out;
1753 }
1754
bond_option_tlb_dynamic_lb_set(struct bonding * bond,const struct bond_opt_value * newval)1755 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1756 const struct bond_opt_value *newval)
1757 {
1758 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1759 newval->string, newval->value);
1760 bond->params.tlb_dynamic_lb = newval->value;
1761
1762 return 0;
1763 }
1764
bond_option_ad_actor_sys_prio_set(struct bonding * bond,const struct bond_opt_value * newval)1765 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1766 const struct bond_opt_value *newval)
1767 {
1768 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1769 newval->value);
1770
1771 bond->params.ad_actor_sys_prio = newval->value;
1772 bond_3ad_update_ad_actor_settings(bond);
1773
1774 return 0;
1775 }
1776
bond_option_ad_actor_system_set(struct bonding * bond,const struct bond_opt_value * newval)1777 static int bond_option_ad_actor_system_set(struct bonding *bond,
1778 const struct bond_opt_value *newval)
1779 {
1780 u8 macaddr[ETH_ALEN];
1781 u8 *mac;
1782
1783 if (newval->string) {
1784 if (!mac_pton(newval->string, macaddr))
1785 goto err;
1786 mac = macaddr;
1787 } else {
1788 mac = (u8 *)&newval->value;
1789 }
1790
1791 if (is_multicast_ether_addr(mac))
1792 goto err;
1793
1794 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac);
1795 ether_addr_copy(bond->params.ad_actor_system, mac);
1796 bond_3ad_update_ad_actor_settings(bond);
1797
1798 return 0;
1799
1800 err:
1801 netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n");
1802 return -EINVAL;
1803 }
1804
bond_option_ad_user_port_key_set(struct bonding * bond,const struct bond_opt_value * newval)1805 static int bond_option_ad_user_port_key_set(struct bonding *bond,
1806 const struct bond_opt_value *newval)
1807 {
1808 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n",
1809 newval->value);
1810
1811 bond->params.ad_user_port_key = newval->value;
1812 return 0;
1813 }
1814