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tcp: tcp_rtx_synack() can be called from process context
[linux-block.git] / drivers / net / bonding / bond_options.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
72be35fe
JP		 2/*
3 * drivers/net/bond/bond_options.c - bonding options
4 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
eecdaa6e 5 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
72be35fe
JP		 6 */
7
72be35fe
JP		 8#include <linux/errno.h>
9#include <linux/if.h>
d9e32b21 10#include <linux/netdevice.h>
eb2d4c64 11#include <linux/spinlock.h>
d9e32b21 12#include <linux/rcupdate.h>
09117362 13#include <linux/ctype.h>
4fb0ef58 14#include <linux/inet.h>
174cd4b1
IM		 15#include <linux/sched/signal.h>
16
1ef8019b 17#include <net/bonding.h>
72be35fe 18
f3253339 19static int bond_option_active_slave_set(struct bonding *bond,
28f084cc 20 const struct bond_opt_value *newval);
f3253339 21static int bond_option_miimon_set(struct bonding *bond,
28f084cc 22 const struct bond_opt_value *newval);
f3253339 23static int bond_option_updelay_set(struct bonding *bond,
28f084cc 24 const struct bond_opt_value *newval);
f3253339 25static int bond_option_downdelay_set(struct bonding *bond,
28f084cc 26 const struct bond_opt_value *newval);
07a4ddec
VB		 27static int bond_option_peer_notif_delay_set(struct bonding *bond,
28 const struct bond_opt_value *newval);
f3253339 29static int bond_option_use_carrier_set(struct bonding *bond,
28f084cc 30 const struct bond_opt_value *newval);
f3253339 31static int bond_option_arp_interval_set(struct bonding *bond,
28f084cc 32 const struct bond_opt_value *newval);
f3253339 33static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
34static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
35static int bond_option_arp_ip_targets_set(struct bonding *bond,
28f084cc 36 const struct bond_opt_value *newval);
129e3c1b
HL		 37#if IS_ENABLED(CONFIG_IPV6)
38static int bond_option_ns_ip6_targets_set(struct bonding *bond,
39 const struct bond_opt_value *newval);
40#endif
f3253339 41static int bond_option_arp_validate_set(struct bonding *bond,
28f084cc 42 const struct bond_opt_value *newval);
f3253339 43static int bond_option_arp_all_targets_set(struct bonding *bond,
28f084cc 44 const struct bond_opt_value *newval);
f3253339 45static int bond_option_primary_set(struct bonding *bond,
28f084cc 46 const struct bond_opt_value *newval);
f3253339 47static int bond_option_primary_reselect_set(struct bonding *bond,
28f084cc 48 const struct bond_opt_value *newval);
f3253339 49static int bond_option_fail_over_mac_set(struct bonding *bond,
28f084cc 50 const struct bond_opt_value *newval);
f3253339 51static int bond_option_xmit_hash_policy_set(struct bonding *bond,
28f084cc 52 const struct bond_opt_value *newval);
f3253339 53static int bond_option_resend_igmp_set(struct bonding *bond,
28f084cc 54 const struct bond_opt_value *newval);
f3253339 55static int bond_option_num_peer_notif_set(struct bonding *bond,
28f084cc 56 const struct bond_opt_value *newval);
f3253339 57static int bond_option_all_slaves_active_set(struct bonding *bond,
28f084cc 58 const struct bond_opt_value *newval);
f3253339 59static int bond_option_min_links_set(struct bonding *bond,
28f084cc 60 const struct bond_opt_value *newval);
f3253339 61static int bond_option_lp_interval_set(struct bonding *bond,
28f084cc 62 const struct bond_opt_value *newval);
f3253339 63static int bond_option_pps_set(struct bonding *bond,
28f084cc 64 const struct bond_opt_value *newval);
3a755cd8
HL		 65static int bond_option_lacp_active_set(struct bonding *bond,
66 const struct bond_opt_value *newval);
f3253339 67static int bond_option_lacp_rate_set(struct bonding *bond,
28f084cc 68 const struct bond_opt_value *newval);
f3253339 69static int bond_option_ad_select_set(struct bonding *bond,
28f084cc 70 const struct bond_opt_value *newval);
f3253339 71static int bond_option_queue_id_set(struct bonding *bond,
28f084cc 72 const struct bond_opt_value *newval);
f3253339 73static int bond_option_mode_set(struct bonding *bond,
28f084cc 74 const struct bond_opt_value *newval);
f3253339 75static int bond_option_slaves_set(struct bonding *bond,
28f084cc 76 const struct bond_opt_value *newval);
e9f0fb88
MB		 77static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
78 const struct bond_opt_value *newval);
6791e466
MB		 79static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
80 const struct bond_opt_value *newval);
74514957
MB		 81static int bond_option_ad_actor_system_set(struct bonding *bond,
82 const struct bond_opt_value *newval);
d22a5fc0
MB		 83static int bond_option_ad_user_port_key_set(struct bonding *bond,
84 const struct bond_opt_value *newval);
5944b5ab
HL		 85static int bond_option_missed_max_set(struct bonding *bond,
86 const struct bond_opt_value *newval);
f3253339 87
88
89static const struct bond_opt_value bond_mode_tbl[] = {
2b3798d5
NA		 90 { "balance-rr", BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
91 { "active-backup", BOND_MODE_ACTIVEBACKUP, 0},
92 { "balance-xor", BOND_MODE_XOR, 0},
93 { "broadcast", BOND_MODE_BROADCAST, 0},
94 { "802.3ad", BOND_MODE_8023AD, 0},
95 { "balance-tlb", BOND_MODE_TLB, 0},
96 { "balance-alb", BOND_MODE_ALB, 0},
97 { NULL, -1, 0},
98};
99
f3253339 100static const struct bond_opt_value bond_pps_tbl[] = {
aa59d851
NA		 101 { "default", 1, BOND_VALFLAG_DEFAULT},
102 { "maxval", USHRT_MAX, BOND_VALFLAG_MAX},
103 { NULL, -1, 0},
104};
105
f3253339 106static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
7b8fc010
JW		 107 { "layer2", BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
108 { "layer3+4", BOND_XMIT_POLICY_LAYER34, 0},
109 { "layer2+3", BOND_XMIT_POLICY_LAYER23, 0},
110 { "encap2+3", BOND_XMIT_POLICY_ENCAP23, 0},
111 { "encap3+4", BOND_XMIT_POLICY_ENCAP34, 0},
112 { "vlan+srcmac", BOND_XMIT_POLICY_VLAN_SRCMAC, 0},
113 { NULL, -1, 0},
a4b32ce7
NA		 114};
115
f3253339 116static const struct bond_opt_value bond_arp_validate_tbl[] = {
896149ff
VF		 117 { "none", BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
118 { "active", BOND_ARP_VALIDATE_ACTIVE, 0},
119 { "backup", BOND_ARP_VALIDATE_BACKUP, 0},
120 { "all", BOND_ARP_VALIDATE_ALL, 0},
121 { "filter", BOND_ARP_FILTER, 0},
122 { "filter_active", BOND_ARP_FILTER_ACTIVE, 0},
123 { "filter_backup", BOND_ARP_FILTER_BACKUP, 0},
124 { NULL, -1, 0},
16228881
NA		 125};
126
f3253339 127static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
edf36b24
NA		 128 { "any", BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
129 { "all", BOND_ARP_TARGETS_ALL, 0},
130 { NULL, -1, 0},
131};
132
f3253339 133static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
1df6b6aa
NA		 134 { "none", BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
135 { "active", BOND_FOM_ACTIVE, 0},
136 { "follow", BOND_FOM_FOLLOW, 0},
137 { NULL, -1, 0},
138};
139
f3253339 140static const struct bond_opt_value bond_intmax_tbl[] = {
7bdb04ed
NA		 141 { "off", 0, BOND_VALFLAG_DEFAULT},
142 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
81c70806 143 { NULL, -1, 0}
7bdb04ed
NA		 144};
145
3a755cd8
HL		 146static const struct bond_opt_value bond_lacp_active[] = {
147 { "off", 0, 0},
148 { "on", 1, BOND_VALFLAG_DEFAULT},
149 { NULL, -1, 0}
150};
151
f3253339 152static const struct bond_opt_value bond_lacp_rate_tbl[] = {
d3131de7
NA		 153 { "slow", AD_LACP_SLOW, 0},
154 { "fast", AD_LACP_FAST, 0},
155 { NULL, -1, 0},
156};
157
f3253339 158static const struct bond_opt_value bond_ad_select_tbl[] = {
9e5f5eeb
NA		 159 { "stable", BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
160 { "bandwidth", BOND_AD_BANDWIDTH, 0},
161 { "count", BOND_AD_COUNT, 0},
162 { NULL, -1, 0},
163};
164
f3253339 165static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
ef56becb
NA		 166 { "off", 0, 0},
167 { "maxval", 255, BOND_VALFLAG_MAX},
168 { "default", 1, BOND_VALFLAG_DEFAULT},
169 { NULL, -1, 0}
170};
171
f3253339 172static const struct bond_opt_value bond_primary_reselect_tbl[] = {
388d3a6d
NA		 173 { "always", BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
174 { "better", BOND_PRI_RESELECT_BETTER, 0},
175 { "failure", BOND_PRI_RESELECT_FAILURE, 0},
176 { NULL, -1},
177};
178
f3253339 179static const struct bond_opt_value bond_use_carrier_tbl[] = {
b3c898e2
DB		 180 { "off", 0, 0},
181 { "on", 1, BOND_VALFLAG_DEFAULT},
182 { NULL, -1, 0}
0fff0608
NA		 183};
184
f3253339 185static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
3df01162
NA		 186 { "off", 0, BOND_VALFLAG_DEFAULT},
187 { "on", 1, 0},
188 { NULL, -1, 0}
189};
190
f3253339 191static const struct bond_opt_value bond_resend_igmp_tbl[] = {
105c8fb6
NA		 192 { "off", 0, 0},
193 { "maxval", 255, BOND_VALFLAG_MAX},
194 { "default", 1, BOND_VALFLAG_DEFAULT},
195 { NULL, -1, 0}
196};
197
f3253339 198static const struct bond_opt_value bond_lp_interval_tbl[] = {
4325b374
NA		 199 { "minval", 1, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
200 { "maxval", INT_MAX, BOND_VALFLAG_MAX},
5bd4e4c1 201 { NULL, -1, 0},
4325b374
NA		 202};
203
e9f0fb88
MB		 204static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
205 { "off", 0, 0},
206 { "on", 1, BOND_VALFLAG_DEFAULT},
207 { NULL, -1, 0}
208};
209
6791e466
MB		 210static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
211 { "minval", 1, BOND_VALFLAG_MIN},
212 { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
213 { NULL, -1, 0},
214};
215
d22a5fc0
MB		 216static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
217 { "minval", 0, BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
218 { "maxval", 1023, BOND_VALFLAG_MAX},
219 { NULL, -1, 0},
220};
221
5944b5ab
HL		 222static const struct bond_opt_value bond_missed_max_tbl[] = {
223 { "minval", 1, BOND_VALFLAG_MIN},
224 { "maxval", 255, BOND_VALFLAG_MAX},
225 { "default", 2, BOND_VALFLAG_DEFAULT},
226 { NULL, -1, 0},
227};
228
7bfa0145 229static const struct bond_option bond_opts[BOND_OPT_LAST] = {
2b3798d5
NA		 230 [BOND_OPT_MODE] = {
231 .id = BOND_OPT_MODE,
232 .name = "mode",
233 .desc = "bond device mode",
234 .flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
235 .values = bond_mode_tbl,
236 .set = bond_option_mode_set
237 },
aa59d851
NA		 238 [BOND_OPT_PACKETS_PER_SLAVE] = {
239 .id = BOND_OPT_PACKETS_PER_SLAVE,
240 .name = "packets_per_slave",
241 .desc = "Packets to send per slave in RR mode",
242 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
243 .values = bond_pps_tbl,
244 .set = bond_option_pps_set
245 },
a4b32ce7
NA		 246 [BOND_OPT_XMIT_HASH] = {
247 .id = BOND_OPT_XMIT_HASH,
248 .name = "xmit_hash_policy",
f05b42ea 249 .desc = "balance-xor, 802.3ad, and tlb hashing method",
a4b32ce7
NA		 250 .values = bond_xmit_hashtype_tbl,
251 .set = bond_option_xmit_hash_policy_set
252 },
16228881
NA		 253 [BOND_OPT_ARP_VALIDATE] = {
254 .id = BOND_OPT_ARP_VALIDATE,
255 .name = "arp_validate",
256 .desc = "validate src/dst of ARP probes",
13ac34a8
VF		 257 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
258 BIT(BOND_MODE_ALB),
16228881
NA		 259 .values = bond_arp_validate_tbl,
260 .set = bond_option_arp_validate_set
261 },
edf36b24
NA		 262 [BOND_OPT_ARP_ALL_TARGETS] = {
263 .id = BOND_OPT_ARP_ALL_TARGETS,
264 .name = "arp_all_targets",
265 .desc = "fail on any/all arp targets timeout",
266 .values = bond_arp_all_targets_tbl,
267 .set = bond_option_arp_all_targets_set
268 },
1df6b6aa
NA		 269 [BOND_OPT_FAIL_OVER_MAC] = {
270 .id = BOND_OPT_FAIL_OVER_MAC,
271 .name = "fail_over_mac",
272 .desc = "For active-backup, do not set all slaves to the same MAC",
273 .flags = BOND_OPTFLAG_NOSLAVES,
274 .values = bond_fail_over_mac_tbl,
275 .set = bond_option_fail_over_mac_set
276 },
7bdb04ed
NA		 277 [BOND_OPT_ARP_INTERVAL] = {
278 .id = BOND_OPT_ARP_INTERVAL,
279 .name = "arp_interval",
280 .desc = "arp interval in milliseconds",
281 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
282 BIT(BOND_MODE_ALB),
283 .values = bond_intmax_tbl,
284 .set = bond_option_arp_interval_set
285 },
5944b5ab
HL		 286 [BOND_OPT_MISSED_MAX] = {
287 .id = BOND_OPT_MISSED_MAX,
288 .name = "arp_missed_max",
289 .desc = "Maximum number of missed ARP interval",
290 .unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
291 BIT(BOND_MODE_ALB),
292 .values = bond_missed_max_tbl,
293 .set = bond_option_missed_max_set
294 },
4fb0ef58
NA		 295 [BOND_OPT_ARP_TARGETS] = {
296 .id = BOND_OPT_ARP_TARGETS,
297 .name = "arp_ip_target",
298 .desc = "arp targets in n.n.n.n form",
299 .flags = BOND_OPTFLAG_RAWVAL,
300 .set = bond_option_arp_ip_targets_set
301 },
129e3c1b
HL		 302#if IS_ENABLED(CONFIG_IPV6)
303 [BOND_OPT_NS_TARGETS] = {
304 .id = BOND_OPT_NS_TARGETS,
305 .name = "ns_ip6_target",
306 .desc = "NS targets in ffff:ffff::ffff:ffff form",
307 .flags = BOND_OPTFLAG_RAWVAL,
308 .set = bond_option_ns_ip6_targets_set
309 },
310#endif
25a9b54a
NA		 311 [BOND_OPT_DOWNDELAY] = {
312 .id = BOND_OPT_DOWNDELAY,
313 .name = "downdelay",
314 .desc = "Delay before considering link down, in milliseconds",
315 .values = bond_intmax_tbl,
316 .set = bond_option_downdelay_set
317 },
e4994612
NA		 318 [BOND_OPT_UPDELAY] = {
319 .id = BOND_OPT_UPDELAY,
320 .name = "updelay",
321 .desc = "Delay before considering link up, in milliseconds",
322 .values = bond_intmax_tbl,
323 .set = bond_option_updelay_set
324 },
3a755cd8
HL		 325 [BOND_OPT_LACP_ACTIVE] = {
326 .id = BOND_OPT_LACP_ACTIVE,
327 .name = "lacp_active",
328 .desc = "Send LACPDU frames with configured lacp rate or acts as speak when spoken to",
329 .flags = BOND_OPTFLAG_IFDOWN,
330 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
331 .values = bond_lacp_active,
332 .set = bond_option_lacp_active_set
333 },
d3131de7
NA		 334 [BOND_OPT_LACP_RATE] = {
335 .id = BOND_OPT_LACP_RATE,
336 .name = "lacp_rate",
337 .desc = "LACPDU tx rate to request from 802.3ad partner",
338 .flags = BOND_OPTFLAG_IFDOWN,
339 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
340 .values = bond_lacp_rate_tbl,
341 .set = bond_option_lacp_rate_set
342 },
633ddc9e
NA		 343 [BOND_OPT_MINLINKS] = {
344 .id = BOND_OPT_MINLINKS,
345 .name = "min_links",
346 .desc = "Minimum number of available links before turning on carrier",
347 .values = bond_intmax_tbl,
348 .set = bond_option_min_links_set
349 },
9e5f5eeb
NA		 350 [BOND_OPT_AD_SELECT] = {
351 .id = BOND_OPT_AD_SELECT,
352 .name = "ad_select",
353 .desc = "803.ad aggregation selection logic",
354 .flags = BOND_OPTFLAG_IFDOWN,
355 .values = bond_ad_select_tbl,
356 .set = bond_option_ad_select_set
357 },
ef56becb
NA		 358 [BOND_OPT_NUM_PEER_NOTIF] = {
359 .id = BOND_OPT_NUM_PEER_NOTIF,
360 .name = "num_unsol_na",
361 .desc = "Number of peer notifications to send on failover event",
362 .values = bond_num_peer_notif_tbl,
363 .set = bond_option_num_peer_notif_set
364 },
b98d9c66
NA		 365 [BOND_OPT_MIIMON] = {
366 .id = BOND_OPT_MIIMON,
367 .name = "miimon",
368 .desc = "Link check interval in milliseconds",
369 .values = bond_intmax_tbl,
370 .set = bond_option_miimon_set
371 },
180222f0
NA		 372 [BOND_OPT_PRIMARY] = {
373 .id = BOND_OPT_PRIMARY,
374 .name = "primary",
375 .desc = "Primary network device to use",
376 .flags = BOND_OPTFLAG_RAWVAL,
377 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
378 BIT(BOND_MODE_TLB) |
379 BIT(BOND_MODE_ALB)),
380 .set = bond_option_primary_set
381 },
388d3a6d
NA		 382 [BOND_OPT_PRIMARY_RESELECT] = {
383 .id = BOND_OPT_PRIMARY_RESELECT,
384 .name = "primary_reselect",
385 .desc = "Reselect primary slave once it comes up",
386 .values = bond_primary_reselect_tbl,
387 .set = bond_option_primary_reselect_set
388 },
0fff0608
NA		 389 [BOND_OPT_USE_CARRIER] = {
390 .id = BOND_OPT_USE_CARRIER,
391 .name = "use_carrier",
392 .desc = "Use netif_carrier_ok (vs MII ioctls) in miimon",
393 .values = bond_use_carrier_tbl,
394 .set = bond_option_use_carrier_set
395 },
d1fbd3ed
NA		 396 [BOND_OPT_ACTIVE_SLAVE] = {
397 .id = BOND_OPT_ACTIVE_SLAVE,
398 .name = "active_slave",
399 .desc = "Currently active slave",
400 .flags = BOND_OPTFLAG_RAWVAL,
401 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
402 BIT(BOND_MODE_TLB) |
403 BIT(BOND_MODE_ALB)),
404 .set = bond_option_active_slave_set
405 },
24089ba1
NA		 406 [BOND_OPT_QUEUE_ID] = {
407 .id = BOND_OPT_QUEUE_ID,
408 .name = "queue_id",
409 .desc = "Set queue id of a slave",
410 .flags = BOND_OPTFLAG_RAWVAL,
411 .set = bond_option_queue_id_set
412 },
3df01162
NA		 413 [BOND_OPT_ALL_SLAVES_ACTIVE] = {
414 .id = BOND_OPT_ALL_SLAVES_ACTIVE,
415 .name = "all_slaves_active",
416 .desc = "Keep all frames received on an interface by setting active flag for all slaves",
417 .values = bond_all_slaves_active_tbl,
418 .set = bond_option_all_slaves_active_set
419 },
105c8fb6
NA		 420 [BOND_OPT_RESEND_IGMP] = {
421 .id = BOND_OPT_RESEND_IGMP,
422 .name = "resend_igmp",
423 .desc = "Number of IGMP membership reports to send on link failure",
424 .values = bond_resend_igmp_tbl,
425 .set = bond_option_resend_igmp_set
426 },
4325b374
NA		 427 [BOND_OPT_LP_INTERVAL] = {
428 .id = BOND_OPT_LP_INTERVAL,
429 .name = "lp_interval",
430 .desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch",
431 .values = bond_lp_interval_tbl,
432 .set = bond_option_lp_interval_set
433 },
0e2e5b66
NA		 434 [BOND_OPT_SLAVES] = {
435 .id = BOND_OPT_SLAVES,
436 .name = "slaves",
437 .desc = "Slave membership management",
438 .flags = BOND_OPTFLAG_RAWVAL,
439 .set = bond_option_slaves_set
440 },
e9f0fb88
MB		 441 [BOND_OPT_TLB_DYNAMIC_LB] = {
442 .id = BOND_OPT_TLB_DYNAMIC_LB,
dc3e5d18 443 .name = "tlb_dynamic_lb",
e9f0fb88 444 .desc = "Enable dynamic flow shuffling",
e79c1055 445 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB) | BIT(BOND_MODE_ALB)),
e9f0fb88
MB		 446 .values = bond_tlb_dynamic_lb_tbl,
447 .flags = BOND_OPTFLAG_IFDOWN,
448 .set = bond_option_tlb_dynamic_lb_set,
6791e466
MB		 449 },
450 [BOND_OPT_AD_ACTOR_SYS_PRIO] = {
451 .id = BOND_OPT_AD_ACTOR_SYS_PRIO,
452 .name = "ad_actor_sys_prio",
453 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
6791e466
MB		 454 .values = bond_ad_actor_sys_prio_tbl,
455 .set = bond_option_ad_actor_sys_prio_set,
456 },
74514957
MB		 457 [BOND_OPT_AD_ACTOR_SYSTEM] = {
458 .id = BOND_OPT_AD_ACTOR_SYSTEM,
459 .name = "ad_actor_system",
460 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
7f20cd25 461 .flags = BOND_OPTFLAG_RAWVAL,
74514957
MB		 462 .set = bond_option_ad_actor_system_set,
463 },
d22a5fc0
MB		 464 [BOND_OPT_AD_USER_PORT_KEY] = {
465 .id = BOND_OPT_AD_USER_PORT_KEY,
466 .name = "ad_user_port_key",
467 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
468 .flags = BOND_OPTFLAG_IFDOWN,
469 .values = bond_ad_user_port_key_tbl,
470 .set = bond_option_ad_user_port_key_set,
205845a3
NA		 471 },
472 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
473 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
474 .name = "num_grat_arp",
475 .desc = "Number of peer notifications to send on failover event",
476 .values = bond_num_peer_notif_tbl,
477 .set = bond_option_num_peer_notif_set
07a4ddec
VB		 478 },
479 [BOND_OPT_PEER_NOTIF_DELAY] = {
480 .id = BOND_OPT_PEER_NOTIF_DELAY,
481 .name = "peer_notif_delay",
482 .desc = "Delay between each peer notification on failover event, in milliseconds",
483 .values = bond_intmax_tbl,
484 .set = bond_option_peer_notif_delay_set
d22a5fc0 485 }
09117362
NA		 486};
487
dc3e5d18
NA		 488/* Searches for an option by name */
489const struct bond_option *bond_opt_get_by_name(const char *name)
490{
491 const struct bond_option *opt;
492 int option;
493
494 for (option = 0; option < BOND_OPT_LAST; option++) {
495 opt = bond_opt_get(option);
496 if (opt && !strcmp(opt->name, name))
497 return opt;
498 }
499
500 return NULL;
501}
502
09117362 503/* Searches for a value in opt's values[] table */
f3253339 504const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
09117362 505{
f3253339 506 const struct bond_option *opt;
09117362
NA		 507 int i;
508
509 opt = bond_opt_get(option);
510 if (WARN_ON(!opt))
511 return NULL;
512 for (i = 0; opt->values && opt->values[i].string; i++)
513 if (opt->values[i].value == val)
514 return &opt->values[i];
515
516 return NULL;
517}
518
519/* Searches for a value in opt's values[] table which matches the flagmask */
f3253339 520static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
eac306b4 521 u32 flagmask)
09117362
NA		 522{
523 int i;
524
525 for (i = 0; opt->values && opt->values[i].string; i++)
526 if (opt->values[i].flags & flagmask)
527 return &opt->values[i];
528
529 return NULL;
530}
531
532/* If maxval is missing then there's no range to check. In case minval is
533 * missing then it's considered to be 0.
534 */
535static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
536{
f3253339 537 const struct bond_opt_value *minval, *maxval;
09117362
NA		 538
539 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
540 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
541 if (!maxval || (minval && val < minval->value) || val > maxval->value)
542 return false;
543
544 return true;
545}
546
547/**
548 * bond_opt_parse - parse option value
549 * @opt: the option to parse against
550 * @val: value to parse
551 *
552 * This function tries to extract the value from @val and check if it's
553 * a possible match for the option and returns NULL if a match isn't found,
554 * or the struct_opt_value that matched. It also strips the new line from
555 * @val->string if it's present.
556 */
f3253339 557const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
558 struct bond_opt_value *val)
09117362
NA		 559{
560 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, };
f3253339 561 const struct bond_opt_value *tbl;
562 const struct bond_opt_value *ret = NULL;
09117362
NA		 563 bool checkval;
564 int i, rv;
565
566 /* No parsing if the option wants a raw val */
567 if (opt->flags & BOND_OPTFLAG_RAWVAL)
568 return val;
569
570 tbl = opt->values;
571 if (!tbl)
572 goto out;
573
574 /* ULLONG_MAX is used to bypass string processing */
575 checkval = val->value != ULLONG_MAX;
576 if (!checkval) {
577 if (!val->string)
578 goto out;
579 p = strchr(val->string, '\n');
580 if (p)
581 *p = '\0';
582 for (p = val->string; *p; p++)
583 if (!(isdigit(*p) || isspace(*p)))
584 break;
585 /* The following code extracts the string to match or the value
586 * and sets checkval appropriately
587 */
588 if (*p) {
589 rv = sscanf(val->string, "%32s", valstr);
590 } else {
591 rv = sscanf(val->string, "%llu", &val->value);
592 checkval = true;
593 }
594 if (!rv)
595 goto out;
596 }
597
598 for (i = 0; tbl[i].string; i++) {
599 /* Check for exact match */
600 if (checkval) {
601 if (val->value == tbl[i].value)
602 ret = &tbl[i];
603 } else {
604 if (!strcmp(valstr, "default") &&
605 (tbl[i].flags & BOND_VALFLAG_DEFAULT))
606 ret = &tbl[i];
607
608 if (!strcmp(valstr, tbl[i].string))
609 ret = &tbl[i];
610 }
611 /* Found an exact match */
612 if (ret)
613 goto out;
614 }
615 /* Possible range match */
616 if (checkval && bond_opt_check_range(opt, val->value))
617 ret = val;
618out:
619 return ret;
620}
621
622/* Check opt's dependencies against bond mode and currently set options */
623static int bond_opt_check_deps(struct bonding *bond,
624 const struct bond_option *opt)
625{
626 struct bond_params *params = &bond->params;
627
628 if (test_bit(params->mode, &opt->unsuppmodes))
629 return -EACCES;
630 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
631 return -ENOTEMPTY;
632 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
633 return -EBUSY;
634
635 return 0;
636}
637
638static void bond_opt_dep_print(struct bonding *bond,
639 const struct bond_option *opt)
640{
28f084cc 641 const struct bond_opt_value *modeval;
09117362
NA		 642 struct bond_params *params;
643
644 params = &bond->params;
2b3798d5 645 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
09117362 646 if (test_bit(params->mode, &opt->unsuppmodes))
2de390ba
VF		 647 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n",
648 opt->name, modeval->string, modeval->value);
09117362
NA		 649}
650
651static void bond_opt_error_interpret(struct bonding *bond,
652 const struct bond_option *opt,
28f084cc 653 int error, const struct bond_opt_value *val)
09117362 654{
28f084cc 655 const struct bond_opt_value *minval, *maxval;
09117362
NA		 656 char *p;
657
658 switch (error) {
659 case -EINVAL:
660 if (val) {
661 if (val->string) {
662 /* sometimes RAWVAL opts may have new lines */
663 p = strchr(val->string, '\n');
664 if (p)
665 *p = '\0';
2de390ba
VF		 666 netdev_err(bond->dev, "option %s: invalid value (%s)\n",
667 opt->name, val->string);
09117362 668 } else {
2de390ba
VF		 669 netdev_err(bond->dev, "option %s: invalid value (%llu)\n",
670 opt->name, val->value);
09117362
NA		 671 }
672 }
673 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
674 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
675 if (!maxval)
676 break;
2de390ba
VF		 677 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n",
678 opt->name, minval ? minval->value : 0, maxval->value);
09117362
NA		 679 break;
680 case -EACCES:
681 bond_opt_dep_print(bond, opt);
682 break;
683 case -ENOTEMPTY:
2de390ba
VF		 684 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n",
685 opt->name);
09117362
NA		 686 break;
687 case -EBUSY:
2de390ba
VF		 688 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n",
689 opt->name);
09117362 690 break;
acdff0df
JL		 691 case -ENODEV:
692 if (val && val->string) {
693 p = strchr(val->string, '\n');
694 if (p)
695 *p = '\0';
696 netdev_err(bond->dev, "option %s: interface %s does not exist!\n",
697 opt->name, val->string);
698 }
699 break;
09117362
NA		 700 default:
701 break;
702 }
703}
704
705/**
706 * __bond_opt_set - set a bonding option
707 * @bond: target bond device
708 * @option: option to set
709 * @val: value to set it to
710 *
711 * This function is used to change the bond's option value, it can be
712 * used for both enabling/changing an option and for disabling it. RTNL lock
713 * must be obtained before calling this function.
714 */
715int __bond_opt_set(struct bonding *bond,
716 unsigned int option, struct bond_opt_value *val)
717{
28f084cc 718 const struct bond_opt_value *retval = NULL;
09117362
NA		 719 const struct bond_option *opt;
720 int ret = -ENOENT;
721
722 ASSERT_RTNL();
723
724 opt = bond_opt_get(option);
725 if (WARN_ON(!val) || WARN_ON(!opt))
726 goto out;
727 ret = bond_opt_check_deps(bond, opt);
728 if (ret)
729 goto out;
730 retval = bond_opt_parse(opt, val);
731 if (!retval) {
732 ret = -EINVAL;
733 goto out;
734 }
735 ret = opt->set(bond, retval);
736out:
737 if (ret)
738 bond_opt_error_interpret(bond, opt, ret, val);
7a7e96e0
VY		 739
740 return ret;
741}
742/**
743 * __bond_opt_set_notify - set a bonding option
744 * @bond: target bond device
745 * @option: option to set
746 * @val: value to set it to
747 *
748 * This function is used to change the bond's option value and trigger
749 * a notification to user sapce. It can be used for both enabling/changing
750 * an option and for disabling it. RTNL lock must be obtained before calling
751 * this function.
752 */
753int __bond_opt_set_notify(struct bonding *bond,
754 unsigned int option, struct bond_opt_value *val)
755{
92e1b57c 756 int ret;
7a7e96e0
VY		 757
758 ASSERT_RTNL();
759
760 ret = __bond_opt_set(bond, option, val);
761
762 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
d4261e56 763 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
09117362
NA		 764
765 return ret;
766}
767
768/**
769 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set
770 * @bond: target bond device
771 * @option: option to set
772 * @buf: value to set it to
773 *
774 * This function tries to acquire RTNL without blocking and if successful
775 * calls __bond_opt_set. It is mainly used for sysfs option manipulation.
776 */
777int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
778{
779 struct bond_opt_value optval;
780 int ret;
781
782 if (!rtnl_trylock())
783 return restart_syscall();
784 bond_opt_initstr(&optval, buf);
7a7e96e0 785 ret = __bond_opt_set_notify(bond, option, &optval);
09117362
NA		 786 rtnl_unlock();
787
788 return ret;
789}
790
791/**
792 * bond_opt_get - get a pointer to an option
793 * @option: option for which to return a pointer
794 *
795 * This function checks if option is valid and if so returns a pointer
796 * to its entry in the bond_opts[] option array.
797 */
f3253339 798const struct bond_option *bond_opt_get(unsigned int option)
09117362
NA		 799{
800 if (!BOND_OPT_VALID(option))
801 return NULL;
802
803 return &bond_opts[option];
804}
805
f45583de 806static bool bond_set_xfrm_features(struct bonding *bond)
007ab534
JW		 807{
808 if (!IS_ENABLED(CONFIG_XFRM_OFFLOAD))
f45583de 809 return false;
007ab534 810
f45583de
TT		 811 if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
812 bond->dev->wanted_features |= BOND_XFRM_FEATURES;
007ab534 813 else
f45583de 814 bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
007ab534 815
f45583de 816 return true;
007ab534
JW		 817}
818
89df6a81
TT		 819static bool bond_set_tls_features(struct bonding *bond)
820{
821 if (!IS_ENABLED(CONFIG_TLS_DEVICE))
822 return false;
823
824 if (bond_sk_check(bond))
825 bond->dev->wanted_features |= BOND_TLS_FEATURES;
826 else
827 bond->dev->wanted_features &= ~BOND_TLS_FEATURES;
828
829 return true;
830}
831
ff11d8b2
NA		 832static int bond_option_mode_set(struct bonding *bond,
833 const struct bond_opt_value *newval)
72be35fe 834{
c1f897ce
JW		 835 if (!bond_mode_uses_arp(newval->value)) {
836 if (bond->params.arp_interval) {
837 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n",
838 newval->string);
839 /* disable arp monitoring */
840 bond->params.arp_interval = 0;
841 }
842
843 if (!bond->params.miimon) {
844 /* set miimon to default value */
845 bond->params.miimon = BOND_DEFAULT_MIIMON;
846 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n",
847 bond->params.miimon);
848 }
72be35fe
JP		 849 }
850
c6644d07
KT		 851 if (newval->value == BOND_MODE_ALB)
852 bond->params.tlb_dynamic_lb = 1;
853
72be35fe
JP		 854 /* don't cache arp_validate between modes */
855 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
2b3798d5
NA		 856 bond->params.mode = newval->value;
857
89df6a81
TT		 858 if (bond->dev->reg_state == NETREG_REGISTERED) {
859 bool update = false;
860
861 update |= bond_set_xfrm_features(bond);
862 update |= bond_set_tls_features(bond);
863
864 if (update)
f45583de 865 netdev_update_features(bond->dev);
89df6a81 866 }
f45583de 867
72be35fe
JP		 868 return 0;
869}
d9e32b21 870
f3253339 871static int bond_option_active_slave_set(struct bonding *bond,
28f084cc 872 const struct bond_opt_value *newval)
d9e32b21 873{
d1fbd3ed
NA		 874 char ifname[IFNAMSIZ] = { 0, };
875 struct net_device *slave_dev;
d9e32b21
JP		 876 int ret = 0;
877
d1fbd3ed
NA		 878 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */
879 if (!strlen(ifname) || newval->string[0] == '\n') {
880 slave_dev = NULL;
881 } else {
882 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
883 if (!slave_dev)
884 return -ENODEV;
885 }
886
d9e32b21
JP		 887 if (slave_dev) {
888 if (!netif_is_bond_slave(slave_dev)) {
f887e54c 889 slave_err(bond->dev, slave_dev, "Device is not bonding slave\n");
d9e32b21
JP		 890 return -EINVAL;
891 }
892
893 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
f887e54c 894 slave_err(bond->dev, slave_dev, "Device is not our slave\n");
d9e32b21
JP		 895 return -EINVAL;
896 }
897 }
898
d9e32b21 899 block_netpoll_tx();
d9e32b21
JP		 900 /* check to see if we are clearing active */
901 if (!slave_dev) {
eac306b4 902 netdev_dbg(bond->dev, "Clearing current active slave\n");
8800a244 903 RCU_INIT_POINTER(bond->curr_active_slave, NULL);
d9e32b21
JP		 904 bond_select_active_slave(bond);
905 } else {
1c72cfdc 906 struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
d9e32b21
JP		 907 struct slave *new_active = bond_slave_get_rtnl(slave_dev);
908
909 BUG_ON(!new_active);
910
911 if (new_active == old_active) {
912 /* do nothing */
f887e54c 913 slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n");
d9e32b21
JP		 914 } else {
915 if (old_active && (new_active->link == BOND_LINK_UP) &&
b6adc610 916 bond_slave_is_up(new_active)) {
f887e54c 917 slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n");
d9e32b21
JP		 918 bond_change_active_slave(bond, new_active);
919 } else {
f887e54c
JW		 920 slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n",
921 new_active->dev->name);
d9e32b21
JP		 922 ret = -EINVAL;
923 }
924 }
925 }
d9e32b21 926 unblock_netpoll_tx();
d1fbd3ed 927
d9e32b21
JP		 928 return ret;
929}
eecdaa6e 930
dc3e5d18
NA		 931/* There are two tricky bits here. First, if MII monitoring is activated, then
932 * we must disable ARP monitoring. Second, if the timer isn't running, we must
933 * start it.
934 */
f3253339 935static int bond_option_miimon_set(struct bonding *bond,
28f084cc 936 const struct bond_opt_value *newval)
eecdaa6e 937{
eac306b4
MD		 938 netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n",
939 newval->value);
b98d9c66 940 bond->params.miimon = newval->value;
eecdaa6e 941 if (bond->params.updelay)
eac306b4
MD		 942 netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n",
943 bond->params.updelay * bond->params.miimon);
eecdaa6e 944 if (bond->params.downdelay)
eac306b4
MD		 945 netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n",
946 bond->params.downdelay * bond->params.miimon);
07a4ddec
VB		 947 if (bond->params.peer_notif_delay)
948 netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n",
949 bond->params.peer_notif_delay * bond->params.miimon);
b98d9c66 950 if (newval->value && bond->params.arp_interval) {
eac306b4 951 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n");
eecdaa6e 952 bond->params.arp_interval = 0;
953 if (bond->params.arp_validate)
954 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
955 }
956 if (bond->dev->flags & IFF_UP) {
957 /* If the interface is up, we may need to fire off
958 * the MII timer. If the interface is down, the
959 * timer will get fired off when the open function
960 * is called.
961 */
b98d9c66 962 if (!newval->value) {
eecdaa6e 963 cancel_delayed_work_sync(&bond->mii_work);
964 } else {
965 cancel_delayed_work_sync(&bond->arp_work);
966 queue_delayed_work(bond->wq, &bond->mii_work, 0);
967 }
968 }
b98d9c66 969
eecdaa6e 970 return 0;
971}
25852e29 972
07a4ddec
VB		 973/* Set up, down and peer notification delays. These must be multiples
974 * of the MII monitoring value, and are stored internally as the
975 * multiplier. Thus, we must translate to MS for the real world.
dc3e5d18 976 */
07a4ddec
VB		 977static int _bond_option_delay_set(struct bonding *bond,
978 const struct bond_opt_value *newval,
979 const char *name,
980 int *target)
25852e29 981{
0681a282
NA		 982 int value = newval->value;
983
e4994612 984 if (!bond->params.miimon) {
07a4ddec
VB		 985 netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n",
986 name);
25852e29 987 return -EPERM;
988 }
0681a282 989 if ((value % bond->params.miimon) != 0) {
07a4ddec
VB		 990 netdev_warn(bond->dev,
991 "%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n",
992 name,
2de390ba
VF		 993 value, bond->params.miimon,
994 (value / bond->params.miimon) *
995 bond->params.miimon);
25852e29 996 }
07a4ddec
VB		 997 *target = value / bond->params.miimon;
998 netdev_dbg(bond->dev, "Setting %s to %d\n",
999 name,
1000 *target * bond->params.miimon);
25852e29 1001
1002 return 0;
1003}
c7461f9b 1004
07a4ddec
VB		 1005static int bond_option_updelay_set(struct bonding *bond,
1006 const struct bond_opt_value *newval)
1007{
1008 return _bond_option_delay_set(bond, newval, "up delay",
1009 &bond->params.updelay);
1010}
1011
f3253339 1012static int bond_option_downdelay_set(struct bonding *bond,
28f084cc 1013 const struct bond_opt_value *newval)
c7461f9b 1014{
07a4ddec
VB		 1015 return _bond_option_delay_set(bond, newval, "down delay",
1016 &bond->params.downdelay);
1017}
c7461f9b 1018
07a4ddec
VB		 1019static int bond_option_peer_notif_delay_set(struct bonding *bond,
1020 const struct bond_opt_value *newval)
1021{
1022 int ret = _bond_option_delay_set(bond, newval,
1023 "peer notification delay",
1024 &bond->params.peer_notif_delay);
1025 return ret;
c7461f9b 1026}
9f53e14e 1027
f3253339 1028static int bond_option_use_carrier_set(struct bonding *bond,
28f084cc 1029 const struct bond_opt_value *newval)
9f53e14e 1030{
eac306b4
MD		 1031 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n",
1032 newval->value);
0fff0608 1033 bond->params.use_carrier = newval->value;
9f53e14e 1034
1035 return 0;
1036}
06151dbc 1037
dc3e5d18
NA		 1038/* There are two tricky bits here. First, if ARP monitoring is activated, then
1039 * we must disable MII monitoring. Second, if the ARP timer isn't running,
1040 * we must start it.
1041 */
f3253339 1042static int bond_option_arp_interval_set(struct bonding *bond,
28f084cc 1043 const struct bond_opt_value *newval)
06151dbc 1044{
eac306b4
MD		 1045 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n",
1046 newval->value);
7bdb04ed
NA		 1047 bond->params.arp_interval = newval->value;
1048 if (newval->value) {
06151dbc 1049 if (bond->params.miimon) {
eac306b4 1050 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n");
06151dbc 1051 bond->params.miimon = 0;
1052 }
1053 if (!bond->params.arp_targets[0])
eac306b4 1054 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n");
06151dbc 1055 }
1056 if (bond->dev->flags & IFF_UP) {
1057 /* If the interface is up, we may need to fire off
1058 * the ARP timer. If the interface is down, the
1059 * timer will get fired off when the open function
1060 * is called.
1061 */
7bdb04ed 1062 if (!newval->value) {
06151dbc 1063 if (bond->params.arp_validate)
1064 bond->recv_probe = NULL;
1065 cancel_delayed_work_sync(&bond->arp_work);
1066 } else {
1067 /* arp_validate can be set only in active-backup mode */
4e24be01 1068 bond->recv_probe = bond_rcv_validate;
06151dbc 1069 cancel_delayed_work_sync(&bond->mii_work);
1070 queue_delayed_work(bond->wq, &bond->arp_work, 0);
1071 }
1072 }
1073
1074 return 0;
1075}
7f28fa10 1076
1077static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
1078 __be32 target,
1079 unsigned long last_rx)
1080{
1081 __be32 *targets = bond->params.arp_targets;
1082 struct list_head *iter;
1083 struct slave *slave;
1084
1085 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
1086 bond_for_each_slave(bond, slave, iter)
1087 slave->target_last_arp_rx[slot] = last_rx;
1088 targets[slot] = target;
1089 }
1090}
1091
1092static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
1093{
1094 __be32 *targets = bond->params.arp_targets;
1095 int ind;
1096
2807a9fe 1097 if (!bond_is_ip_target_ok(target)) {
2de390ba
VF		 1098 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n",
1099 &target);
7f28fa10 1100 return -EINVAL;
1101 }
1102
1103 if (bond_get_targets_ip(targets, target) != -1) { /* dup */
2de390ba
VF		 1104 netdev_err(bond->dev, "ARP target %pI4 is already present\n",
1105 &target);
7f28fa10 1106 return -EINVAL;
1107 }
1108
1109 ind = bond_get_targets_ip(targets, 0); /* first free slot */
1110 if (ind == -1) {
2de390ba 1111 netdev_err(bond->dev, "ARP target table is full!\n");
7f28fa10 1112 return -EINVAL;
1113 }
1114
eac306b4 1115 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target);
7f28fa10 1116
1117 _bond_options_arp_ip_target_set(bond, ind, target, jiffies);
1118
1119 return 0;
1120}
1121
f3253339 1122static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
7f28fa10 1123{
246df7b4 1124 return _bond_option_arp_ip_target_add(bond, target);
7f28fa10 1125}
1126
f3253339 1127static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
7f28fa10 1128{
1129 __be32 *targets = bond->params.arp_targets;
1130 struct list_head *iter;
1131 struct slave *slave;
1132 unsigned long *targets_rx;
1133 int ind, i;
1134
2807a9fe 1135 if (!bond_is_ip_target_ok(target)) {
2de390ba
VF		 1136 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n",
1137 &target);
7f28fa10 1138 return -EINVAL;
1139 }
1140
1141 ind = bond_get_targets_ip(targets, target);
1142 if (ind == -1) {
2de390ba
VF		 1143 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n",
1144 &target);
7f28fa10 1145 return -EINVAL;
1146 }
1147
1148 if (ind == 0 && !targets[1] && bond->params.arp_interval)
2de390ba 1149 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
7f28fa10 1150
eac306b4 1151 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target);
7f28fa10 1152
7f28fa10 1153 bond_for_each_slave(bond, slave, iter) {
1154 targets_rx = slave->target_last_arp_rx;
1155 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1156 targets_rx[i] = targets_rx[i+1];
1157 targets_rx[i] = 0;
1158 }
1159 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++)
1160 targets[i] = targets[i+1];
1161 targets[i] = 0;
1162
7f28fa10 1163 return 0;
1164}
1165
4fb0ef58 1166void bond_option_arp_ip_targets_clear(struct bonding *bond)
7f28fa10 1167{
4fb0ef58 1168 int i;
7f28fa10 1169
7f28fa10 1170 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
1171 _bond_options_arp_ip_target_set(bond, i, 0, 0);
4fb0ef58 1172}
7f28fa10 1173
f3253339 1174static int bond_option_arp_ip_targets_set(struct bonding *bond,
28f084cc 1175 const struct bond_opt_value *newval)
4fb0ef58
NA		 1176{
1177 int ret = -EPERM;
1178 __be32 target;
1179
1180 if (newval->string) {
1181 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) {
2de390ba
VF		 1182 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n",
1183 &target);
4fb0ef58
NA		 1184 return ret;
1185 }
1186 if (newval->string[0] == '+')
1187 ret = bond_option_arp_ip_target_add(bond, target);
1188 else if (newval->string[0] == '-')
1189 ret = bond_option_arp_ip_target_rem(bond, target);
1190 else
2de390ba 1191 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n");
4fb0ef58
NA		 1192 } else {
1193 target = newval->value;
1194 ret = bond_option_arp_ip_target_add(bond, target);
7f28fa10 1195 }
1196
7f28fa10 1197 return ret;
1198}
29c49482 1199
129e3c1b
HL		 1200#if IS_ENABLED(CONFIG_IPV6)
1201static void _bond_options_ns_ip6_target_set(struct bonding *bond, int slot,
1202 struct in6_addr *target,
1203 unsigned long last_rx)
1204{
1205 struct in6_addr *targets = bond->params.ns_targets;
1206 struct list_head *iter;
1207 struct slave *slave;
1208
1209 if (slot >= 0 && slot < BOND_MAX_NS_TARGETS) {
1210 bond_for_each_slave(bond, slave, iter)
1211 slave->target_last_arp_rx[slot] = last_rx;
1212 targets[slot] = *target;
1213 }
1214}
1215
1216void bond_option_ns_ip6_targets_clear(struct bonding *bond)
1217{
1218 struct in6_addr addr_any = in6addr_any;
1219 int i;
1220
1221 for (i = 0; i < BOND_MAX_NS_TARGETS; i++)
1222 _bond_options_ns_ip6_target_set(bond, i, &addr_any, 0);
1223}
1224
1225static int bond_option_ns_ip6_targets_set(struct bonding *bond,
1226 const struct bond_opt_value *newval)
1227{
1228 struct in6_addr *target = (struct in6_addr *)newval->extra;
1229 struct in6_addr *targets = bond->params.ns_targets;
1230 struct in6_addr addr_any = in6addr_any;
1231 int index;
1232
1233 if (!bond_is_ip6_target_ok(target)) {
1234 netdev_err(bond->dev, "invalid NS target %pI6c specified for addition\n",
1235 target);
1236 return -EINVAL;
1237 }
1238
1239 if (bond_get_targets_ip6(targets, target) != -1) { /* dup */
1240 netdev_err(bond->dev, "NS target %pI6c is already present\n",
1241 target);
1242 return -EINVAL;
1243 }
1244
1245 index = bond_get_targets_ip6(targets, &addr_any); /* first free slot */
1246 if (index == -1) {
1247 netdev_err(bond->dev, "NS target table is full!\n");
1248 return -EINVAL;
1249 }
1250
1251 netdev_dbg(bond->dev, "Adding NS target %pI6c\n", target);
1252
1253 _bond_options_ns_ip6_target_set(bond, index, target, jiffies);
1254
1255 return 0;
1256}
1257#endif
1258
f3253339 1259static int bond_option_arp_validate_set(struct bonding *bond,
28f084cc 1260 const struct bond_opt_value *newval)
29c49482 1261{
eac306b4
MD		 1262 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n",
1263 newval->string, newval->value);
16228881 1264 bond->params.arp_validate = newval->value;
29c49482 1265
1266 return 0;
1267}
d5c84254 1268
f3253339 1269static int bond_option_arp_all_targets_set(struct bonding *bond,
28f084cc 1270 const struct bond_opt_value *newval)
d5c84254 1271{
eac306b4
MD		 1272 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n",
1273 newval->string, newval->value);
edf36b24 1274 bond->params.arp_all_targets = newval->value;
d5c84254 1275
1276 return 0;
1277}
0a98a0d1 1278
5944b5ab
HL		 1279static int bond_option_missed_max_set(struct bonding *bond,
1280 const struct bond_opt_value *newval)
1281{
1282 netdev_dbg(bond->dev, "Setting missed max to %s (%llu)\n",
1283 newval->string, newval->value);
1284 bond->params.missed_max = newval->value;
1285
1286 return 0;
1287}
1288
f3253339 1289static int bond_option_primary_set(struct bonding *bond,
28f084cc 1290 const struct bond_opt_value *newval)
0a98a0d1 1291{
180222f0 1292 char *p, *primary = newval->string;
0a98a0d1 1293 struct list_head *iter;
1294 struct slave *slave;
0a98a0d1 1295
1296 block_netpoll_tx();
0a98a0d1 1297
180222f0
NA		 1298 p = strchr(primary, '\n');
1299 if (p)
1300 *p = '\0';
0a98a0d1 1301 /* check to see if we are clearing primary */
1302 if (!strlen(primary)) {
eac306b4 1303 netdev_dbg(bond->dev, "Setting primary slave to None\n");
059b47e8 1304 RCU_INIT_POINTER(bond->primary_slave, NULL);
0a98a0d1 1305 memset(bond->params.primary, 0, sizeof(bond->params.primary));
1306 bond_select_active_slave(bond);
1307 goto out;
1308 }
1309
1310 bond_for_each_slave(bond, slave, iter) {
1311 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) {
f887e54c 1312 slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n");
059b47e8 1313 rcu_assign_pointer(bond->primary_slave, slave);
0a98a0d1 1314 strcpy(bond->params.primary, slave->dev->name);
eb55bbf8 1315 bond->force_primary = true;
0a98a0d1 1316 bond_select_active_slave(bond);
1317 goto out;
1318 }
1319 }
1320
059b47e8 1321 if (rtnl_dereference(bond->primary_slave)) {
eac306b4 1322 netdev_dbg(bond->dev, "Setting primary slave to None\n");
059b47e8 1323 RCU_INIT_POINTER(bond->primary_slave, NULL);
c59ab673 1324 bond_select_active_slave(bond);
1325 }
43902070 1326 strscpy_pad(bond->params.primary, primary, IFNAMSIZ);
0a98a0d1 1327
f887e54c
JW		 1328 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n",
1329 primary);
0a98a0d1 1330
1331out:
0a98a0d1 1332 unblock_netpoll_tx();
1333
180222f0 1334 return 0;
0a98a0d1 1335}
8a41ae44 1336
f3253339 1337static int bond_option_primary_reselect_set(struct bonding *bond,
28f084cc 1338 const struct bond_opt_value *newval)
8a41ae44 1339{
eac306b4
MD		 1340 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n",
1341 newval->string, newval->value);
388d3a6d 1342 bond->params.primary_reselect = newval->value;
8a41ae44 1343
1344 block_netpoll_tx();
8a41ae44 1345 bond_select_active_slave(bond);
8a41ae44 1346 unblock_netpoll_tx();
1347
1348 return 0;
1349}
89901972 1350
f3253339 1351static int bond_option_fail_over_mac_set(struct bonding *bond,
28f084cc 1352 const struct bond_opt_value *newval)
89901972 1353{
eac306b4
MD		 1354 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n",
1355 newval->string, newval->value);
1df6b6aa 1356 bond->params.fail_over_mac = newval->value;
89901972 1357
1358 return 0;
1359}
f70161c6 1360
f3253339 1361static int bond_option_xmit_hash_policy_set(struct bonding *bond,
28f084cc 1362 const struct bond_opt_value *newval)
f70161c6 1363{
eac306b4
MD		 1364 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n",
1365 newval->string, newval->value);
a4b32ce7 1366 bond->params.xmit_policy = newval->value;
f70161c6 1367
89df6a81
TT		 1368 if (bond->dev->reg_state == NETREG_REGISTERED)
1369 if (bond_set_tls_features(bond))
1370 netdev_update_features(bond->dev);
1371
f70161c6 1372 return 0;
1373}
d8838de7 1374
f3253339 1375static int bond_option_resend_igmp_set(struct bonding *bond,
28f084cc 1376 const struct bond_opt_value *newval)
d8838de7 1377{
eac306b4
MD		 1378 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n",
1379 newval->value);
105c8fb6 1380 bond->params.resend_igmp = newval->value;
d8838de7 1381
1382 return 0;
1383}
2c9839c1 1384
f3253339 1385static int bond_option_num_peer_notif_set(struct bonding *bond,
28f084cc 1386 const struct bond_opt_value *newval)
2c9839c1 1387{
ef56becb
NA		 1388 bond->params.num_peer_notif = newval->value;
1389
2c9839c1 1390 return 0;
1391}
1cc0b1e3 1392
f3253339 1393static int bond_option_all_slaves_active_set(struct bonding *bond,
28f084cc 1394 const struct bond_opt_value *newval)
1cc0b1e3 1395{
1396 struct list_head *iter;
1397 struct slave *slave;
1398
3df01162 1399 if (newval->value == bond->params.all_slaves_active)
1cc0b1e3 1400 return 0;
3df01162 1401 bond->params.all_slaves_active = newval->value;
1cc0b1e3 1402 bond_for_each_slave(bond, slave, iter) {
1403 if (!bond_is_active_slave(slave)) {
3df01162 1404 if (newval->value)
1cc0b1e3 1405 slave->inactive = 0;
1406 else
1407 slave->inactive = 1;
1408 }
1409 }
1410
1411 return 0;
1412}
7d101008 1413
f3253339 1414static int bond_option_min_links_set(struct bonding *bond,
28f084cc 1415 const struct bond_opt_value *newval)
7d101008 1416{
eac306b4
MD		 1417 netdev_dbg(bond->dev, "Setting min links value to %llu\n",
1418 newval->value);
633ddc9e 1419 bond->params.min_links = newval->value;
2477bc9a 1420 bond_set_carrier(bond);
7d101008 1421
1422 return 0;
1423}
8d836d09 1424
f3253339 1425static int bond_option_lp_interval_set(struct bonding *bond,
28f084cc 1426 const struct bond_opt_value *newval)
8d836d09 1427{
4325b374 1428 bond->params.lp_interval = newval->value;
8d836d09 1429
1430 return 0;
1431}
c13ab3ff 1432
f3253339 1433static int bond_option_pps_set(struct bonding *bond,
28f084cc 1434 const struct bond_opt_value *newval)
c13ab3ff 1435{
eac306b4
MD		 1436 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n",
1437 newval->value);
aa59d851
NA		 1438 bond->params.packets_per_slave = newval->value;
1439 if (newval->value > 0) {
809fa972 1440 bond->params.reciprocal_packets_per_slave =
aa59d851 1441 reciprocal_value(newval->value);
809fa972
HFS		 1442 } else {
1443 /* reciprocal_packets_per_slave is unused if
1444 * packets_per_slave is 0 or 1, just initialize it
1445 */
1446 bond->params.reciprocal_packets_per_slave =
1447 (struct reciprocal_value) { 0 };
1448 }
c13ab3ff 1449
1450 return 0;
1451}
998e40bb 1452
3a755cd8
HL		 1453static int bond_option_lacp_active_set(struct bonding *bond,
1454 const struct bond_opt_value *newval)
1455{
1456 netdev_dbg(bond->dev, "Setting LACP active to %s (%llu)\n",
1457 newval->string, newval->value);
1458 bond->params.lacp_active = newval->value;
1459
1460 return 0;
1461}
1462
f3253339 1463static int bond_option_lacp_rate_set(struct bonding *bond,
28f084cc 1464 const struct bond_opt_value *newval)
998e40bb 1465{
eac306b4
MD		 1466 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n",
1467 newval->string, newval->value);
d3131de7 1468 bond->params.lacp_fast = newval->value;
3243c47b 1469 bond_3ad_update_lacp_rate(bond);
998e40bb 1470
1471 return 0;
1472}
ec029fac 1473
f3253339 1474static int bond_option_ad_select_set(struct bonding *bond,
28f084cc 1475 const struct bond_opt_value *newval)
ec029fac 1476{
eac306b4
MD		 1477 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n",
1478 newval->string, newval->value);
9e5f5eeb 1479 bond->params.ad_select = newval->value;
ec029fac 1480
1481 return 0;
1482}
24089ba1 1483
f3253339 1484static int bond_option_queue_id_set(struct bonding *bond,
28f084cc 1485 const struct bond_opt_value *newval)
24089ba1
NA		 1486{
1487 struct slave *slave, *update_slave;
1488 struct net_device *sdev;
1489 struct list_head *iter;
1490 char *delim;
1491 int ret = 0;
1492 u16 qid;
1493
1494 /* delim will point to queue id if successful */
1495 delim = strchr(newval->string, ':');
1496 if (!delim)
1497 goto err_no_cmd;
1498
1499 /* Terminate string that points to device name and bump it
1500 * up one, so we can read the queue id there.
1501 */
1502 *delim = '\0';
1503 if (sscanf(++delim, "%hd\n", &qid) != 1)
1504 goto err_no_cmd;
1505
1506 /* Check buffer length, valid ifname and queue id */
c313c89e 1507 if (!dev_valid_name(newval->string) ||
24089ba1
NA		 1508 qid > bond->dev->real_num_tx_queues)
1509 goto err_no_cmd;
1510
1511 /* Get the pointer to that interface if it exists */
1512 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
1513 if (!sdev)
1514 goto err_no_cmd;
1515
1516 /* Search for thes slave and check for duplicate qids */
1517 update_slave = NULL;
1518 bond_for_each_slave(bond, slave, iter) {
1519 if (sdev == slave->dev)
1520 /* We don't need to check the matching
1521 * slave for dups, since we're overwriting it
1522 */
1523 update_slave = slave;
1524 else if (qid && qid == slave->queue_id) {
1525 goto err_no_cmd;
1526 }
1527 }
1528
1529 if (!update_slave)
1530 goto err_no_cmd;
1531
1532 /* Actually set the qids for the slave */
1533 update_slave->queue_id = qid;
1534
1535out:
1536 return ret;
1537
1538err_no_cmd:
eac306b4 1539 netdev_dbg(bond->dev, "invalid input for queue_id set\n");
24089ba1
NA		 1540 ret = -EPERM;
1541 goto out;
1542
1543}
0e2e5b66 1544
f3253339 1545static int bond_option_slaves_set(struct bonding *bond,
28f084cc 1546 const struct bond_opt_value *newval)
0e2e5b66
NA		 1547{
1548 char command[IFNAMSIZ + 1] = { 0, };
1549 struct net_device *dev;
1550 char *ifname;
1551 int ret;
1552
1553 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/
1554 ifname = command + 1;
1555 if ((strlen(command) <= 1) ||
415d3942 1556 (command[0] != '+' && command[0] != '-') ||
0e2e5b66
NA		 1557 !dev_valid_name(ifname))
1558 goto err_no_cmd;
1559
1560 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1561 if (!dev) {
eac306b4
MD		 1562 netdev_dbg(bond->dev, "interface %s does not exist!\n",
1563 ifname);
0e2e5b66
NA		 1564 ret = -ENODEV;
1565 goto out;
1566 }
1567
1568 switch (command[0]) {
1569 case '+':
f887e54c 1570 slave_dbg(bond->dev, dev, "Enslaving interface\n");
33eaf2a6 1571 ret = bond_enslave(bond->dev, dev, NULL);
0e2e5b66
NA		 1572 break;
1573
1574 case '-':
f887e54c 1575 slave_dbg(bond->dev, dev, "Releasing interface\n");
0e2e5b66
NA		 1576 ret = bond_release(bond->dev, dev);
1577 break;
1578
1579 default:
415d3942 1580 /* should not run here. */
0e2e5b66
NA		 1581 goto err_no_cmd;
1582 }
1583
1584out:
1585 return ret;
1586
1587err_no_cmd:
2de390ba 1588 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n");
0e2e5b66
NA		 1589 ret = -EPERM;
1590 goto out;
1591}
e9f0fb88
MB		 1592
1593static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
1594 const struct bond_opt_value *newval)
1595{
eac306b4
MD		 1596 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n",
1597 newval->string, newval->value);
e9f0fb88
MB		 1598 bond->params.tlb_dynamic_lb = newval->value;
1599
1600 return 0;
1601}
6791e466
MB		 1602
1603static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
1604 const struct bond_opt_value *newval)
1605{
eac306b4
MD		 1606 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n",
1607 newval->value);
6791e466
MB		 1608
1609 bond->params.ad_actor_sys_prio = newval->value;
5ee14e6d
NA		 1610 bond_3ad_update_ad_actor_settings(bond);
1611
6791e466
MB		 1612 return 0;
1613}
74514957
MB		 1614
1615static int bond_option_ad_actor_system_set(struct bonding *bond,
1616 const struct bond_opt_value *newval)
1617{
1618 u8 macaddr[ETH_ALEN];
171a42c3 1619 u8 *mac;
74514957 1620
171a42c3 1621 if (newval->string) {
ce5c144f 1622 if (!mac_pton(newval->string, macaddr))
171a42c3
AG		 1623 goto err;
1624 mac = macaddr;
1625 } else {
1626 mac = (u8 *)&newval->value;
74514957
MB		 1627 }
1628
1c15b05b 1629 if (is_multicast_ether_addr(mac))
171a42c3
AG		 1630 goto err;
1631
eac306b4 1632 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac);
171a42c3 1633 ether_addr_copy(bond->params.ad_actor_system, mac);
5ee14e6d
NA		 1634 bond_3ad_update_ad_actor_settings(bond);
1635
74514957 1636 return 0;
171a42c3
AG		 1637
1638err:
f887e54c 1639 netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n");
171a42c3 1640 return -EINVAL;
74514957 1641}
d22a5fc0
MB		 1642
1643static int bond_option_ad_user_port_key_set(struct bonding *bond,
1644 const struct bond_opt_value *newval)
1645{
eac306b4
MD		 1646 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n",
1647 newval->value);
d22a5fc0
MB		 1648
1649 bond->params.ad_user_port_key = newval->value;
1650 return 0;
1651}
Linux 6.x block layer and io_uring tree(s)