1/* 2 * drivers/net/bond/bond_options.c - bonding options 3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us> 4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 12#include <linux/errno.h> 13#include <linux/if.h> 14#include <linux/netdevice.h> 15#include <linux/spinlock.h> 16#include <linux/rcupdate.h> 17#include <linux/ctype.h> 18#include <linux/inet.h> 19#include <net/bonding.h> 20 21static int bond_option_active_slave_set(struct bonding *bond, 22 const struct bond_opt_value *newval); 23static int bond_option_miimon_set(struct bonding *bond, 24 const struct bond_opt_value *newval); 25static int bond_option_updelay_set(struct bonding *bond, 26 const struct bond_opt_value *newval); 27static int bond_option_downdelay_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)), 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 .flags = BOND_OPTFLAG_IFDOWN, 406 .values = bond_ad_actor_sys_prio_tbl, 407 .set = bond_option_ad_actor_sys_prio_set, 408 }, 409 [BOND_OPT_AD_ACTOR_SYSTEM] = { 410 .id = BOND_OPT_AD_ACTOR_SYSTEM, 411 .name = "ad_actor_system", 412 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), 413 .flags = BOND_OPTFLAG_RAWVAL | BOND_OPTFLAG_IFDOWN, 414 .set = bond_option_ad_actor_system_set, 415 }, 416 [BOND_OPT_AD_USER_PORT_KEY] = { 417 .id = BOND_OPT_AD_USER_PORT_KEY, 418 .name = "ad_user_port_key", 419 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), 420 .flags = BOND_OPTFLAG_IFDOWN, 421 .values = bond_ad_user_port_key_tbl, 422 .set = bond_option_ad_user_port_key_set, 423 }, 424 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = { 425 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS, 426 .name = "num_grat_arp", 427 .desc = "Number of peer notifications to send on failover event", 428 .values = bond_num_peer_notif_tbl, 429 .set = bond_option_num_peer_notif_set 430 } 431}; 432 433/* Searches for an option by name */ 434const struct bond_option *bond_opt_get_by_name(const char *name) 435{ 436 const struct bond_option *opt; 437 int option; 438 439 for (option = 0; option < BOND_OPT_LAST; option++) { 440 opt = bond_opt_get(option); 441 if (opt && !strcmp(opt->name, name)) 442 return opt; 443 } 444 445 return NULL; 446} 447 448/* Searches for a value in opt's values[] table */ 449const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) 450{ 451 const struct bond_option *opt; 452 int i; 453 454 opt = bond_opt_get(option); 455 if (WARN_ON(!opt)) 456 return NULL; 457 for (i = 0; opt->values && opt->values[i].string; i++) 458 if (opt->values[i].value == val) 459 return &opt->values[i]; 460 461 return NULL; 462} 463 464/* Searches for a value in opt's values[] table which matches the flagmask */ 465static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, 466 u32 flagmask) 467{ 468 int i; 469 470 for (i = 0; opt->values && opt->values[i].string; i++) 471 if (opt->values[i].flags & flagmask) 472 return &opt->values[i]; 473 474 return NULL; 475} 476 477/* If maxval is missing then there's no range to check. In case minval is 478 * missing then it's considered to be 0. 479 */ 480static bool bond_opt_check_range(const struct bond_option *opt, u64 val) 481{ 482 const struct bond_opt_value *minval, *maxval; 483 484 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); 485 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); 486 if (!maxval || (minval && val < minval->value) || val > maxval->value) 487 return false; 488 489 return true; 490} 491 492/** 493 * bond_opt_parse - parse option value 494 * @opt: the option to parse against 495 * @val: value to parse 496 * 497 * This function tries to extract the value from @val and check if it's 498 * a possible match for the option and returns NULL if a match isn't found, 499 * or the struct_opt_value that matched. It also strips the new line from 500 * @val->string if it's present. 501 */ 502const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, 503 struct bond_opt_value *val) 504{ 505 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; 506 const struct bond_opt_value *tbl; 507 const struct bond_opt_value *ret = NULL; 508 bool checkval; 509 int i, rv; 510 511 /* No parsing if the option wants a raw val */ 512 if (opt->flags & BOND_OPTFLAG_RAWVAL) 513 return val; 514 515 tbl = opt->values; 516 if (!tbl) 517 goto out; 518 519 /* ULLONG_MAX is used to bypass string processing */ 520 checkval = val->value != ULLONG_MAX; 521 if (!checkval) { 522 if (!val->string) 523 goto out; 524 p = strchr(val->string, '\n'); 525 if (p) 526 *p = '\0'; 527 for (p = val->string; *p; p++) 528 if (!(isdigit(*p) || isspace(*p))) 529 break; 530 /* The following code extracts the string to match or the value 531 * and sets checkval appropriately 532 */ 533 if (*p) { 534 rv = sscanf(val->string, "%32s", valstr); 535 } else { 536 rv = sscanf(val->string, "%llu", &val->value); 537 checkval = true; 538 } 539 if (!rv) 540 goto out; 541 } 542 543 for (i = 0; tbl[i].string; i++) { 544 /* Check for exact match */ 545 if (checkval) { 546 if (val->value == tbl[i].value) 547 ret = &tbl[i]; 548 } else { 549 if (!strcmp(valstr, "default") && 550 (tbl[i].flags & BOND_VALFLAG_DEFAULT)) 551 ret = &tbl[i]; 552 553 if (!strcmp(valstr, tbl[i].string)) 554 ret = &tbl[i]; 555 } 556 /* Found an exact match */ 557 if (ret) 558 goto out; 559 } 560 /* Possible range match */ 561 if (checkval && bond_opt_check_range(opt, val->value)) 562 ret = val; 563out: 564 return ret; 565} 566 567/* Check opt's dependencies against bond mode and currently set options */ 568static int bond_opt_check_deps(struct bonding *bond, 569 const struct bond_option *opt) 570{ 571 struct bond_params *params = &bond->params; 572 573 if (test_bit(params->mode, &opt->unsuppmodes)) 574 return -EACCES; 575 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) 576 return -ENOTEMPTY; 577 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) 578 return -EBUSY; 579 580 return 0; 581} 582 583static void bond_opt_dep_print(struct bonding *bond, 584 const struct bond_option *opt) 585{ 586 const struct bond_opt_value *modeval; 587 struct bond_params *params; 588 589 params = &bond->params; 590 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); 591 if (test_bit(params->mode, &opt->unsuppmodes)) 592 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n", 593 opt->name, modeval->string, modeval->value); 594} 595 596static void bond_opt_error_interpret(struct bonding *bond, 597 const struct bond_option *opt, 598 int error, const struct bond_opt_value *val) 599{ 600 const struct bond_opt_value *minval, *maxval; 601 char *p; 602 603 switch (error) { 604 case -EINVAL: 605 if (val) { 606 if (val->string) { 607 /* sometimes RAWVAL opts may have new lines */ 608 p = strchr(val->string, '\n'); 609 if (p) 610 *p = '\0'; 611 netdev_err(bond->dev, "option %s: invalid value (%s)\n", 612 opt->name, val->string); 613 } else { 614 netdev_err(bond->dev, "option %s: invalid value (%llu)\n", 615 opt->name, val->value); 616 } 617 } 618 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); 619 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); 620 if (!maxval) 621 break; 622 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n", 623 opt->name, minval ? minval->value : 0, maxval->value); 624 break; 625 case -EACCES: 626 bond_opt_dep_print(bond, opt); 627 break; 628 case -ENOTEMPTY: 629 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n", 630 opt->name); 631 break; 632 case -EBUSY: 633 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n", 634 opt->name); 635 break; 636 default: 637 break; 638 } 639} 640 641/** 642 * __bond_opt_set - set a bonding option 643 * @bond: target bond device 644 * @option: option to set 645 * @val: value to set it to 646 * 647 * This function is used to change the bond's option value, it can be 648 * used for both enabling/changing an option and for disabling it. RTNL lock 649 * must be obtained before calling this function. 650 */ 651int __bond_opt_set(struct bonding *bond, 652 unsigned int option, struct bond_opt_value *val) 653{ 654 const struct bond_opt_value *retval = NULL; 655 const struct bond_option *opt; 656 int ret = -ENOENT; 657 658 ASSERT_RTNL(); 659 660 opt = bond_opt_get(option); 661 if (WARN_ON(!val) || WARN_ON(!opt)) 662 goto out; 663 ret = bond_opt_check_deps(bond, opt); 664 if (ret) 665 goto out; 666 retval = bond_opt_parse(opt, val); 667 if (!retval) { 668 ret = -EINVAL; 669 goto out; 670 } 671 ret = opt->set(bond, retval); 672out: 673 if (ret) 674 bond_opt_error_interpret(bond, opt, ret, val); 675 else if (bond->dev->reg_state == NETREG_REGISTERED) 676 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev); 677 678 return ret; 679} 680 681/** 682 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set 683 * @bond: target bond device 684 * @option: option to set 685 * @buf: value to set it to 686 * 687 * This function tries to acquire RTNL without blocking and if successful 688 * calls __bond_opt_set. It is mainly used for sysfs option manipulation. 689 */ 690int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) 691{ 692 struct bond_opt_value optval; 693 int ret; 694 695 if (!rtnl_trylock()) 696 return restart_syscall(); 697 bond_opt_initstr(&optval, buf); 698 ret = __bond_opt_set(bond, option, &optval); 699 rtnl_unlock(); 700 701 return ret; 702} 703 704/** 705 * bond_opt_get - get a pointer to an option 706 * @option: option for which to return a pointer 707 * 708 * This function checks if option is valid and if so returns a pointer 709 * to its entry in the bond_opts[] option array. 710 */ 711const struct bond_option *bond_opt_get(unsigned int option) 712{ 713 if (!BOND_OPT_VALID(option)) 714 return NULL; 715 716 return &bond_opts[option]; 717} 718 719static int bond_option_mode_set(struct bonding *bond, 720 const struct bond_opt_value *newval) 721{ 722 if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) { 723 netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n", 724 newval->string); 725 /* disable arp monitoring */ 726 bond->params.arp_interval = 0; 727 /* set miimon to default value */ 728 bond->params.miimon = BOND_DEFAULT_MIIMON; 729 netdev_info(bond->dev, "Setting MII monitoring interval to %d\n", 730 bond->params.miimon); 731 } 732 733 /* don't cache arp_validate between modes */ 734 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; 735 bond->params.mode = newval->value; 736 737 return 0; 738} 739 740static int bond_option_active_slave_set(struct bonding *bond, 741 const struct bond_opt_value *newval) 742{ 743 char ifname[IFNAMSIZ] = { 0, }; 744 struct net_device *slave_dev; 745 int ret = 0; 746 747 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ 748 if (!strlen(ifname) || newval->string[0] == '\n') { 749 slave_dev = NULL; 750 } else { 751 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); 752 if (!slave_dev) 753 return -ENODEV; 754 } 755 756 if (slave_dev) { 757 if (!netif_is_bond_slave(slave_dev)) { 758 netdev_err(bond->dev, "Device %s is not bonding slave\n", 759 slave_dev->name); 760 return -EINVAL; 761 } 762 763 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { 764 netdev_err(bond->dev, "Device %s is not our slave\n", 765 slave_dev->name); 766 return -EINVAL; 767 } 768 } 769 770 block_netpoll_tx(); 771 /* check to see if we are clearing active */ 772 if (!slave_dev) { 773 netdev_info(bond->dev, "Clearing current active slave\n"); 774 RCU_INIT_POINTER(bond->curr_active_slave, NULL); 775 bond_select_active_slave(bond); 776 } else { 777 struct slave *old_active = rtnl_dereference(bond->curr_active_slave); 778 struct slave *new_active = bond_slave_get_rtnl(slave_dev); 779 780 BUG_ON(!new_active); 781 782 if (new_active == old_active) { 783 /* do nothing */ 784 netdev_info(bond->dev, "%s is already the current active slave\n", 785 new_active->dev->name); 786 } else { 787 if (old_active && (new_active->link == BOND_LINK_UP) && 788 bond_slave_is_up(new_active)) { 789 netdev_info(bond->dev, "Setting %s as active slave\n", 790 new_active->dev->name); 791 bond_change_active_slave(bond, new_active); 792 } else { 793 netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n", 794 new_active->dev->name, 795 new_active->dev->name); 796 ret = -EINVAL; 797 } 798 } 799 } 800 unblock_netpoll_tx(); 801 802 return ret; 803} 804 805/* There are two tricky bits here. First, if MII monitoring is activated, then 806 * we must disable ARP monitoring. Second, if the timer isn't running, we must 807 * start it. 808 */ 809static int bond_option_miimon_set(struct bonding *bond, 810 const struct bond_opt_value *newval) 811{ 812 netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n", 813 newval->value); 814 bond->params.miimon = newval->value; 815 if (bond->params.updelay) 816 netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n", 817 bond->params.updelay * bond->params.miimon); 818 if (bond->params.downdelay) 819 netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", 820 bond->params.downdelay * bond->params.miimon); 821 if (newval->value && bond->params.arp_interval) { 822 netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n"); 823 bond->params.arp_interval = 0; 824 if (bond->params.arp_validate) 825 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; 826 } 827 if (bond->dev->flags & IFF_UP) { 828 /* If the interface is up, we may need to fire off 829 * the MII timer. If the interface is down, the 830 * timer will get fired off when the open function 831 * is called. 832 */ 833 if (!newval->value) { 834 cancel_delayed_work_sync(&bond->mii_work); 835 } else { 836 cancel_delayed_work_sync(&bond->arp_work); 837 queue_delayed_work(bond->wq, &bond->mii_work, 0); 838 } 839 } 840 841 return 0; 842} 843 844/* Set up and down delays. These must be multiples of the 845 * MII monitoring value, and are stored internally as the multiplier. 846 * Thus, we must translate to MS for the real world. 847 */ 848static int bond_option_updelay_set(struct bonding *bond, 849 const struct bond_opt_value *newval) 850{ 851 int value = newval->value; 852 853 if (!bond->params.miimon) { 854 netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n"); 855 return -EPERM; 856 } 857 if ((value % bond->params.miimon) != 0) { 858 netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", 859 value, bond->params.miimon, 860 (value / bond->params.miimon) * 861 bond->params.miimon); 862 } 863 bond->params.updelay = value / bond->params.miimon; 864 netdev_info(bond->dev, "Setting up delay to %d\n", 865 bond->params.updelay * bond->params.miimon); 866 867 return 0; 868} 869 870static int bond_option_downdelay_set(struct bonding *bond, 871 const struct bond_opt_value *newval) 872{ 873 int value = newval->value; 874 875 if (!bond->params.miimon) { 876 netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n"); 877 return -EPERM; 878 } 879 if ((value % bond->params.miimon) != 0) { 880 netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", 881 value, bond->params.miimon, 882 (value / bond->params.miimon) * 883 bond->params.miimon); 884 } 885 bond->params.downdelay = value / bond->params.miimon; 886 netdev_info(bond->dev, "Setting down delay to %d\n", 887 bond->params.downdelay * bond->params.miimon); 888 889 return 0; 890} 891 892static int bond_option_use_carrier_set(struct bonding *bond, 893 const struct bond_opt_value *newval) 894{ 895 netdev_info(bond->dev, "Setting use_carrier to %llu\n", 896 newval->value); 897 bond->params.use_carrier = newval->value; 898 899 return 0; 900} 901 902/* There are two tricky bits here. First, if ARP monitoring is activated, then 903 * we must disable MII monitoring. Second, if the ARP timer isn't running, 904 * we must start it. 905 */ 906static int bond_option_arp_interval_set(struct bonding *bond, 907 const struct bond_opt_value *newval) 908{ 909 netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n", 910 newval->value); 911 bond->params.arp_interval = newval->value; 912 if (newval->value) { 913 if (bond->params.miimon) { 914 netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n"); 915 bond->params.miimon = 0; 916 } 917 if (!bond->params.arp_targets[0]) 918 netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n"); 919 } 920 if (bond->dev->flags & IFF_UP) { 921 /* If the interface is up, we may need to fire off 922 * the ARP timer. If the interface is down, the 923 * timer will get fired off when the open function 924 * is called. 925 */ 926 if (!newval->value) { 927 if (bond->params.arp_validate) 928 bond->recv_probe = NULL; 929 cancel_delayed_work_sync(&bond->arp_work); 930 } else { 931 /* arp_validate can be set only in active-backup mode */ 932 bond->recv_probe = bond_arp_rcv; 933 cancel_delayed_work_sync(&bond->mii_work); 934 queue_delayed_work(bond->wq, &bond->arp_work, 0); 935 } 936 } 937 938 return 0; 939} 940 941static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, 942 __be32 target, 943 unsigned long last_rx) 944{ 945 __be32 *targets = bond->params.arp_targets; 946 struct list_head *iter; 947 struct slave *slave; 948 949 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { 950 bond_for_each_slave(bond, slave, iter) 951 slave->target_last_arp_rx[slot] = last_rx; 952 targets[slot] = target; 953 } 954} 955 956static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 957{ 958 __be32 *targets = bond->params.arp_targets; 959 int ind; 960 961 if (!bond_is_ip_target_ok(target)) { 962 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n", 963 &target); 964 return -EINVAL; 965 } 966 967 if (bond_get_targets_ip(targets, target) != -1) { /* dup */ 968 netdev_err(bond->dev, "ARP target %pI4 is already present\n", 969 &target); 970 return -EINVAL; 971 } 972 973 ind = bond_get_targets_ip(targets, 0); /* first free slot */ 974 if (ind == -1) { 975 netdev_err(bond->dev, "ARP target table is full!\n"); 976 return -EINVAL; 977 } 978 979 netdev_info(bond->dev, "Adding ARP target %pI4\n", &target); 980 981 _bond_options_arp_ip_target_set(bond, ind, target, jiffies); 982 983 return 0; 984} 985 986static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 987{ 988 return _bond_option_arp_ip_target_add(bond, target); 989} 990 991static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) 992{ 993 __be32 *targets = bond->params.arp_targets; 994 struct list_head *iter; 995 struct slave *slave; 996 unsigned long *targets_rx; 997 int ind, i; 998 999 if (!bond_is_ip_target_ok(target)) { 1000 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n", 1001 &target); 1002 return -EINVAL; 1003 } 1004 1005 ind = bond_get_targets_ip(targets, target); 1006 if (ind == -1) { 1007 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n", 1008 &target); 1009 return -EINVAL; 1010 } 1011 1012 if (ind == 0 && !targets[1] && bond->params.arp_interval) 1013 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 1014 1015 netdev_info(bond->dev, "Removing ARP target %pI4\n", &target); 1016 1017 bond_for_each_slave(bond, slave, iter) { 1018 targets_rx = slave->target_last_arp_rx; 1019 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1020 targets_rx[i] = targets_rx[i+1]; 1021 targets_rx[i] = 0; 1022 } 1023 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1024 targets[i] = targets[i+1]; 1025 targets[i] = 0; 1026 1027 return 0; 1028} 1029 1030void bond_option_arp_ip_targets_clear(struct bonding *bond) 1031{ 1032 int i; 1033 1034 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 1035 _bond_options_arp_ip_target_set(bond, i, 0, 0); 1036} 1037 1038static int bond_option_arp_ip_targets_set(struct bonding *bond, 1039 const struct bond_opt_value *newval) 1040{ 1041 int ret = -EPERM; 1042 __be32 target; 1043 1044 if (newval->string) { 1045 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { 1046 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n", 1047 &target); 1048 return ret; 1049 } 1050 if (newval->string[0] == '+') 1051 ret = bond_option_arp_ip_target_add(bond, target); 1052 else if (newval->string[0] == '-') 1053 ret = bond_option_arp_ip_target_rem(bond, target); 1054 else 1055 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n"); 1056 } else { 1057 target = newval->value; 1058 ret = bond_option_arp_ip_target_add(bond, target); 1059 } 1060 1061 return ret; 1062} 1063 1064static int bond_option_arp_validate_set(struct bonding *bond, 1065 const struct bond_opt_value *newval) 1066{ 1067 netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n", 1068 newval->string, newval->value); 1069 1070 if (bond->dev->flags & IFF_UP) { 1071 if (!newval->value) 1072 bond->recv_probe = NULL; 1073 else if (bond->params.arp_interval) 1074 bond->recv_probe = bond_arp_rcv; 1075 } 1076 bond->params.arp_validate = newval->value; 1077 1078 return 0; 1079} 1080 1081static int bond_option_arp_all_targets_set(struct bonding *bond, 1082 const struct bond_opt_value *newval) 1083{ 1084 netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n", 1085 newval->string, newval->value); 1086 bond->params.arp_all_targets = newval->value; 1087 1088 return 0; 1089} 1090 1091static int bond_option_primary_set(struct bonding *bond, 1092 const struct bond_opt_value *newval) 1093{ 1094 char *p, *primary = newval->string; 1095 struct list_head *iter; 1096 struct slave *slave; 1097 1098 block_netpoll_tx(); 1099 1100 p = strchr(primary, '\n'); 1101 if (p) 1102 *p = '\0'; 1103 /* check to see if we are clearing primary */ 1104 if (!strlen(primary)) { 1105 netdev_info(bond->dev, "Setting primary slave to None\n"); 1106 RCU_INIT_POINTER(bond->primary_slave, NULL); 1107 memset(bond->params.primary, 0, sizeof(bond->params.primary)); 1108 bond_select_active_slave(bond); 1109 goto out; 1110 } 1111 1112 bond_for_each_slave(bond, slave, iter) { 1113 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { 1114 netdev_info(bond->dev, "Setting %s as primary slave\n", 1115 slave->dev->name); 1116 rcu_assign_pointer(bond->primary_slave, slave); 1117 strcpy(bond->params.primary, slave->dev->name); 1118 bond_select_active_slave(bond); 1119 goto out; 1120 } 1121 } 1122 1123 if (rtnl_dereference(bond->primary_slave)) { 1124 netdev_info(bond->dev, "Setting primary slave to None\n"); 1125 RCU_INIT_POINTER(bond->primary_slave, NULL); 1126 bond_select_active_slave(bond); 1127 } 1128 strncpy(bond->params.primary, primary, IFNAMSIZ); 1129 bond->params.primary[IFNAMSIZ - 1] = 0; 1130 1131 netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n", 1132 primary, bond->dev->name); 1133 1134out: 1135 unblock_netpoll_tx(); 1136 1137 return 0; 1138} 1139 1140static int bond_option_primary_reselect_set(struct bonding *bond, 1141 const struct bond_opt_value *newval) 1142{ 1143 netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n", 1144 newval->string, newval->value); 1145 bond->params.primary_reselect = newval->value; 1146 1147 block_netpoll_tx(); 1148 bond_select_active_slave(bond); 1149 unblock_netpoll_tx(); 1150 1151 return 0; 1152} 1153 1154static int bond_option_fail_over_mac_set(struct bonding *bond, 1155 const struct bond_opt_value *newval) 1156{ 1157 netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n", 1158 newval->string, newval->value); 1159 bond->params.fail_over_mac = newval->value; 1160 1161 return 0; 1162} 1163 1164static int bond_option_xmit_hash_policy_set(struct bonding *bond, 1165 const struct bond_opt_value *newval) 1166{ 1167 netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n", 1168 newval->string, newval->value); 1169 bond->params.xmit_policy = newval->value; 1170 1171 return 0; 1172} 1173 1174static int bond_option_resend_igmp_set(struct bonding *bond, 1175 const struct bond_opt_value *newval) 1176{ 1177 netdev_info(bond->dev, "Setting resend_igmp to %llu\n", 1178 newval->value); 1179 bond->params.resend_igmp = newval->value; 1180 1181 return 0; 1182} 1183 1184static int bond_option_num_peer_notif_set(struct bonding *bond, 1185 const struct bond_opt_value *newval) 1186{ 1187 bond->params.num_peer_notif = newval->value; 1188 1189 return 0; 1190} 1191 1192static int bond_option_all_slaves_active_set(struct bonding *bond, 1193 const struct bond_opt_value *newval) 1194{ 1195 struct list_head *iter; 1196 struct slave *slave; 1197 1198 if (newval->value == bond->params.all_slaves_active) 1199 return 0; 1200 bond->params.all_slaves_active = newval->value; 1201 bond_for_each_slave(bond, slave, iter) { 1202 if (!bond_is_active_slave(slave)) { 1203 if (newval->value) 1204 slave->inactive = 0; 1205 else 1206 slave->inactive = 1; 1207 } 1208 } 1209 1210 return 0; 1211} 1212 1213static int bond_option_min_links_set(struct bonding *bond, 1214 const struct bond_opt_value *newval) 1215{ 1216 netdev_info(bond->dev, "Setting min links value to %llu\n", 1217 newval->value); 1218 bond->params.min_links = newval->value; 1219 bond_set_carrier(bond); 1220 1221 return 0; 1222} 1223 1224static int bond_option_lp_interval_set(struct bonding *bond, 1225 const struct bond_opt_value *newval) 1226{ 1227 bond->params.lp_interval = newval->value; 1228 1229 return 0; 1230} 1231 1232static int bond_option_pps_set(struct bonding *bond, 1233 const struct bond_opt_value *newval) 1234{ 1235 bond->params.packets_per_slave = newval->value; 1236 if (newval->value > 0) { 1237 bond->params.reciprocal_packets_per_slave = 1238 reciprocal_value(newval->value); 1239 } else { 1240 /* reciprocal_packets_per_slave is unused if 1241 * packets_per_slave is 0 or 1, just initialize it 1242 */ 1243 bond->params.reciprocal_packets_per_slave = 1244 (struct reciprocal_value) { 0 }; 1245 } 1246 1247 return 0; 1248} 1249 1250static int bond_option_lacp_rate_set(struct bonding *bond, 1251 const struct bond_opt_value *newval) 1252{ 1253 netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n", 1254 newval->string, newval->value); 1255 bond->params.lacp_fast = newval->value; 1256 bond_3ad_update_lacp_rate(bond); 1257 1258 return 0; 1259} 1260 1261static int bond_option_ad_select_set(struct bonding *bond, 1262 const struct bond_opt_value *newval) 1263{ 1264 netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n", 1265 newval->string, newval->value); 1266 bond->params.ad_select = newval->value; 1267 1268 return 0; 1269} 1270 1271static int bond_option_queue_id_set(struct bonding *bond, 1272 const struct bond_opt_value *newval) 1273{ 1274 struct slave *slave, *update_slave; 1275 struct net_device *sdev; 1276 struct list_head *iter; 1277 char *delim; 1278 int ret = 0; 1279 u16 qid; 1280 1281 /* delim will point to queue id if successful */ 1282 delim = strchr(newval->string, ':'); 1283 if (!delim) 1284 goto err_no_cmd; 1285 1286 /* Terminate string that points to device name and bump it 1287 * up one, so we can read the queue id there. 1288 */ 1289 *delim = '\0'; 1290 if (sscanf(++delim, "%hd\n", &qid) != 1) 1291 goto err_no_cmd; 1292 1293 /* Check buffer length, valid ifname and queue id */ 1294 if (!dev_valid_name(newval->string) || 1295 qid > bond->dev->real_num_tx_queues) 1296 goto err_no_cmd; 1297 1298 /* Get the pointer to that interface if it exists */ 1299 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); 1300 if (!sdev) 1301 goto err_no_cmd; 1302 1303 /* Search for thes slave and check for duplicate qids */ 1304 update_slave = NULL; 1305 bond_for_each_slave(bond, slave, iter) { 1306 if (sdev == slave->dev) 1307 /* We don't need to check the matching 1308 * slave for dups, since we're overwriting it 1309 */ 1310 update_slave = slave; 1311 else if (qid && qid == slave->queue_id) { 1312 goto err_no_cmd; 1313 } 1314 } 1315 1316 if (!update_slave) 1317 goto err_no_cmd; 1318 1319 /* Actually set the qids for the slave */ 1320 update_slave->queue_id = qid; 1321 1322out: 1323 return ret; 1324 1325err_no_cmd: 1326 netdev_info(bond->dev, "invalid input for queue_id set\n"); 1327 ret = -EPERM; 1328 goto out; 1329 1330} 1331 1332static int bond_option_slaves_set(struct bonding *bond, 1333 const struct bond_opt_value *newval) 1334{ 1335 char command[IFNAMSIZ + 1] = { 0, }; 1336 struct net_device *dev; 1337 char *ifname; 1338 int ret; 1339 1340 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ 1341 ifname = command + 1; 1342 if ((strlen(command) <= 1) || 1343 !dev_valid_name(ifname)) 1344 goto err_no_cmd; 1345 1346 dev = __dev_get_by_name(dev_net(bond->dev), ifname); 1347 if (!dev) { 1348 netdev_info(bond->dev, "interface %s does not exist!\n", 1349 ifname); 1350 ret = -ENODEV; 1351 goto out; 1352 } 1353 1354 switch (command[0]) { 1355 case '+': 1356 netdev_info(bond->dev, "Adding slave %s\n", dev->name); 1357 ret = bond_enslave(bond->dev, dev); 1358 break; 1359 1360 case '-': 1361 netdev_info(bond->dev, "Removing slave %s\n", dev->name); 1362 ret = bond_release(bond->dev, dev); 1363 break; 1364 1365 default: 1366 goto err_no_cmd; 1367 } 1368 1369out: 1370 return ret; 1371 1372err_no_cmd: 1373 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n"); 1374 ret = -EPERM; 1375 goto out; 1376} 1377 1378static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, 1379 const struct bond_opt_value *newval) 1380{ 1381 netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n", 1382 newval->string, newval->value); 1383 bond->params.tlb_dynamic_lb = newval->value; 1384 1385 return 0; 1386} 1387 1388static int bond_option_ad_actor_sys_prio_set(struct bonding *bond, 1389 const struct bond_opt_value *newval) 1390{ 1391 netdev_info(bond->dev, "Setting ad_actor_sys_prio to %llu\n", 1392 newval->value); 1393 1394 bond->params.ad_actor_sys_prio = newval->value; 1395 return 0; 1396} 1397 1398static int bond_option_ad_actor_system_set(struct bonding *bond, 1399 const struct bond_opt_value *newval) 1400{ 1401 u8 macaddr[ETH_ALEN]; 1402 u8 *mac; 1403 int i; 1404 1405 if (newval->string) { 1406 i = sscanf(newval->string, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 1407 &macaddr[0], &macaddr[1], &macaddr[2], 1408 &macaddr[3], &macaddr[4], &macaddr[5]); 1409 if (i != ETH_ALEN) 1410 goto err; 1411 mac = macaddr; 1412 } else { 1413 mac = (u8 *)&newval->value; 1414 } 1415 1416 if (!is_valid_ether_addr(mac)) 1417 goto err; 1418 1419 netdev_info(bond->dev, "Setting ad_actor_system to %pM\n", mac); 1420 ether_addr_copy(bond->params.ad_actor_system, mac); 1421 return 0; 1422 1423err: 1424 netdev_err(bond->dev, "Invalid MAC address.\n"); 1425 return -EINVAL; 1426} 1427 1428static int bond_option_ad_user_port_key_set(struct bonding *bond, 1429 const struct bond_opt_value *newval) 1430{ 1431 netdev_info(bond->dev, "Setting ad_user_port_key to %llu\n", 1432 newval->value); 1433 1434 bond->params.ad_user_port_key = newval->value; 1435 return 0; 1436} 1437