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