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