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 21 static int bond_option_active_slave_set(struct bonding *bond, 22 const struct bond_opt_value *newval); 23 static int bond_option_miimon_set(struct bonding *bond, 24 const struct bond_opt_value *newval); 25 static int bond_option_updelay_set(struct bonding *bond, 26 const struct bond_opt_value *newval); 27 static int bond_option_downdelay_set(struct bonding *bond, 28 const struct bond_opt_value *newval); 29 static int bond_option_use_carrier_set(struct bonding *bond, 30 const struct bond_opt_value *newval); 31 static int bond_option_arp_interval_set(struct bonding *bond, 32 const struct bond_opt_value *newval); 33 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target); 34 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target); 35 static int bond_option_arp_ip_targets_set(struct bonding *bond, 36 const struct bond_opt_value *newval); 37 static int bond_option_arp_validate_set(struct bonding *bond, 38 const struct bond_opt_value *newval); 39 static int bond_option_arp_all_targets_set(struct bonding *bond, 40 const struct bond_opt_value *newval); 41 static int bond_option_primary_set(struct bonding *bond, 42 const struct bond_opt_value *newval); 43 static int bond_option_primary_reselect_set(struct bonding *bond, 44 const struct bond_opt_value *newval); 45 static int bond_option_fail_over_mac_set(struct bonding *bond, 46 const struct bond_opt_value *newval); 47 static int bond_option_xmit_hash_policy_set(struct bonding *bond, 48 const struct bond_opt_value *newval); 49 static int bond_option_resend_igmp_set(struct bonding *bond, 50 const struct bond_opt_value *newval); 51 static int bond_option_num_peer_notif_set(struct bonding *bond, 52 const struct bond_opt_value *newval); 53 static int bond_option_all_slaves_active_set(struct bonding *bond, 54 const struct bond_opt_value *newval); 55 static int bond_option_min_links_set(struct bonding *bond, 56 const struct bond_opt_value *newval); 57 static int bond_option_lp_interval_set(struct bonding *bond, 58 const struct bond_opt_value *newval); 59 static int bond_option_pps_set(struct bonding *bond, 60 const struct bond_opt_value *newval); 61 static int bond_option_lacp_rate_set(struct bonding *bond, 62 const struct bond_opt_value *newval); 63 static int bond_option_ad_select_set(struct bonding *bond, 64 const struct bond_opt_value *newval); 65 static int bond_option_queue_id_set(struct bonding *bond, 66 const struct bond_opt_value *newval); 67 static int bond_option_mode_set(struct bonding *bond, 68 const struct bond_opt_value *newval); 69 static int bond_option_slaves_set(struct bonding *bond, 70 const struct bond_opt_value *newval); 71 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, 72 const struct bond_opt_value *newval); 73 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond, 74 const struct bond_opt_value *newval); 75 static int bond_option_ad_actor_system_set(struct bonding *bond, 76 const struct bond_opt_value *newval); 77 static int bond_option_ad_user_port_key_set(struct bonding *bond, 78 const struct bond_opt_value *newval); 79 80 81 static 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 92 static 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 98 static 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 }; 106 107 static 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 }; 117 118 static 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 }; 123 124 static 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 }; 130 131 static 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 }; 136 137 static 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 }; 142 143 static 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 }; 149 150 static 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 }; 156 157 static 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 }; 163 164 static const struct bond_opt_value bond_use_carrier_tbl[] = { 165 { "off", 0, 0}, 166 { "on", 1, BOND_VALFLAG_DEFAULT}, 167 { NULL, -1, 0} 168 }; 169 170 static 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 }; 175 176 static 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 }; 182 183 static 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 }; 188 189 static 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 }; 194 195 static 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 }; 200 201 static 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 }; 206 207 static 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 */ 434 const 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 */ 449 const 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 */ 465 static 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 */ 480 static 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 */ 502 const 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; 563 out: 564 return ret; 565 } 566 567 /* Check opt's dependencies against bond mode and currently set options */ 568 static 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 } 582 583 static 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 } 595 596 static 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 */ 651 int __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); 672 out: 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 */ 690 int 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 */ 711 const 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 } 718 719 static 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 } 739 740 static struct net_device *__bond_option_active_slave_get(struct bonding *bond, 741 struct slave *slave) 742 { 743 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 744 } 745 746 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 747 { 748 struct slave *slave = rcu_dereference(bond->curr_active_slave); 749 750 return __bond_option_active_slave_get(bond, slave); 751 } 752 753 static int bond_option_active_slave_set(struct bonding *bond, 754 const struct bond_opt_value *newval) 755 { 756 char ifname[IFNAMSIZ] = { 0, }; 757 struct net_device *slave_dev; 758 int ret = 0; 759 760 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ 761 if (!strlen(ifname) || newval->string[0] == '\n') { 762 slave_dev = NULL; 763 } else { 764 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); 765 if (!slave_dev) 766 return -ENODEV; 767 } 768 769 if (slave_dev) { 770 if (!netif_is_bond_slave(slave_dev)) { 771 netdev_err(bond->dev, "Device %s is not bonding slave\n", 772 slave_dev->name); 773 return -EINVAL; 774 } 775 776 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { 777 netdev_err(bond->dev, "Device %s is not our slave\n", 778 slave_dev->name); 779 return -EINVAL; 780 } 781 } 782 783 block_netpoll_tx(); 784 /* check to see if we are clearing active */ 785 if (!slave_dev) { 786 netdev_info(bond->dev, "Clearing current active slave\n"); 787 RCU_INIT_POINTER(bond->curr_active_slave, NULL); 788 bond_select_active_slave(bond); 789 } else { 790 struct slave *old_active = rtnl_dereference(bond->curr_active_slave); 791 struct slave *new_active = bond_slave_get_rtnl(slave_dev); 792 793 BUG_ON(!new_active); 794 795 if (new_active == old_active) { 796 /* do nothing */ 797 netdev_info(bond->dev, "%s is already the current active slave\n", 798 new_active->dev->name); 799 } else { 800 if (old_active && (new_active->link == BOND_LINK_UP) && 801 bond_slave_is_up(new_active)) { 802 netdev_info(bond->dev, "Setting %s as active slave\n", 803 new_active->dev->name); 804 bond_change_active_slave(bond, new_active); 805 } else { 806 netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n", 807 new_active->dev->name, 808 new_active->dev->name); 809 ret = -EINVAL; 810 } 811 } 812 } 813 unblock_netpoll_tx(); 814 815 return ret; 816 } 817 818 /* There are two tricky bits here. First, if MII monitoring is activated, then 819 * we must disable ARP monitoring. Second, if the timer isn't running, we must 820 * start it. 821 */ 822 static int bond_option_miimon_set(struct bonding *bond, 823 const struct bond_opt_value *newval) 824 { 825 netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n", 826 newval->value); 827 bond->params.miimon = newval->value; 828 if (bond->params.updelay) 829 netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n", 830 bond->params.updelay * bond->params.miimon); 831 if (bond->params.downdelay) 832 netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", 833 bond->params.downdelay * bond->params.miimon); 834 if (newval->value && bond->params.arp_interval) { 835 netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n"); 836 bond->params.arp_interval = 0; 837 if (bond->params.arp_validate) 838 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; 839 } 840 if (bond->dev->flags & IFF_UP) { 841 /* If the interface is up, we may need to fire off 842 * the MII timer. If the interface is down, the 843 * timer will get fired off when the open function 844 * is called. 845 */ 846 if (!newval->value) { 847 cancel_delayed_work_sync(&bond->mii_work); 848 } else { 849 cancel_delayed_work_sync(&bond->arp_work); 850 queue_delayed_work(bond->wq, &bond->mii_work, 0); 851 } 852 } 853 854 return 0; 855 } 856 857 /* Set up and down delays. These must be multiples of the 858 * MII monitoring value, and are stored internally as the multiplier. 859 * Thus, we must translate to MS for the real world. 860 */ 861 static int bond_option_updelay_set(struct bonding *bond, 862 const struct bond_opt_value *newval) 863 { 864 int value = newval->value; 865 866 if (!bond->params.miimon) { 867 netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n"); 868 return -EPERM; 869 } 870 if ((value % bond->params.miimon) != 0) { 871 netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", 872 value, bond->params.miimon, 873 (value / bond->params.miimon) * 874 bond->params.miimon); 875 } 876 bond->params.updelay = value / bond->params.miimon; 877 netdev_info(bond->dev, "Setting up delay to %d\n", 878 bond->params.updelay * bond->params.miimon); 879 880 return 0; 881 } 882 883 static int bond_option_downdelay_set(struct bonding *bond, 884 const struct bond_opt_value *newval) 885 { 886 int value = newval->value; 887 888 if (!bond->params.miimon) { 889 netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n"); 890 return -EPERM; 891 } 892 if ((value % bond->params.miimon) != 0) { 893 netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", 894 value, bond->params.miimon, 895 (value / bond->params.miimon) * 896 bond->params.miimon); 897 } 898 bond->params.downdelay = value / bond->params.miimon; 899 netdev_info(bond->dev, "Setting down delay to %d\n", 900 bond->params.downdelay * bond->params.miimon); 901 902 return 0; 903 } 904 905 static int bond_option_use_carrier_set(struct bonding *bond, 906 const struct bond_opt_value *newval) 907 { 908 netdev_info(bond->dev, "Setting use_carrier to %llu\n", 909 newval->value); 910 bond->params.use_carrier = newval->value; 911 912 return 0; 913 } 914 915 /* There are two tricky bits here. First, if ARP monitoring is activated, then 916 * we must disable MII monitoring. Second, if the ARP timer isn't running, 917 * we must start it. 918 */ 919 static int bond_option_arp_interval_set(struct bonding *bond, 920 const struct bond_opt_value *newval) 921 { 922 netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n", 923 newval->value); 924 bond->params.arp_interval = newval->value; 925 if (newval->value) { 926 if (bond->params.miimon) { 927 netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n"); 928 bond->params.miimon = 0; 929 } 930 if (!bond->params.arp_targets[0]) 931 netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n"); 932 } 933 if (bond->dev->flags & IFF_UP) { 934 /* If the interface is up, we may need to fire off 935 * the ARP timer. If the interface is down, the 936 * timer will get fired off when the open function 937 * is called. 938 */ 939 if (!newval->value) { 940 if (bond->params.arp_validate) 941 bond->recv_probe = NULL; 942 cancel_delayed_work_sync(&bond->arp_work); 943 } else { 944 /* arp_validate can be set only in active-backup mode */ 945 bond->recv_probe = bond_arp_rcv; 946 cancel_delayed_work_sync(&bond->mii_work); 947 queue_delayed_work(bond->wq, &bond->arp_work, 0); 948 } 949 } 950 951 return 0; 952 } 953 954 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, 955 __be32 target, 956 unsigned long last_rx) 957 { 958 __be32 *targets = bond->params.arp_targets; 959 struct list_head *iter; 960 struct slave *slave; 961 962 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { 963 bond_for_each_slave(bond, slave, iter) 964 slave->target_last_arp_rx[slot] = last_rx; 965 targets[slot] = target; 966 } 967 } 968 969 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 970 { 971 __be32 *targets = bond->params.arp_targets; 972 int ind; 973 974 if (!bond_is_ip_target_ok(target)) { 975 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n", 976 &target); 977 return -EINVAL; 978 } 979 980 if (bond_get_targets_ip(targets, target) != -1) { /* dup */ 981 netdev_err(bond->dev, "ARP target %pI4 is already present\n", 982 &target); 983 return -EINVAL; 984 } 985 986 ind = bond_get_targets_ip(targets, 0); /* first free slot */ 987 if (ind == -1) { 988 netdev_err(bond->dev, "ARP target table is full!\n"); 989 return -EINVAL; 990 } 991 992 netdev_info(bond->dev, "Adding ARP target %pI4\n", &target); 993 994 _bond_options_arp_ip_target_set(bond, ind, target, jiffies); 995 996 return 0; 997 } 998 999 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 1000 { 1001 return _bond_option_arp_ip_target_add(bond, target); 1002 } 1003 1004 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) 1005 { 1006 __be32 *targets = bond->params.arp_targets; 1007 struct list_head *iter; 1008 struct slave *slave; 1009 unsigned long *targets_rx; 1010 int ind, i; 1011 1012 if (!bond_is_ip_target_ok(target)) { 1013 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n", 1014 &target); 1015 return -EINVAL; 1016 } 1017 1018 ind = bond_get_targets_ip(targets, target); 1019 if (ind == -1) { 1020 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n", 1021 &target); 1022 return -EINVAL; 1023 } 1024 1025 if (ind == 0 && !targets[1] && bond->params.arp_interval) 1026 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 1027 1028 netdev_info(bond->dev, "Removing ARP target %pI4\n", &target); 1029 1030 bond_for_each_slave(bond, slave, iter) { 1031 targets_rx = slave->target_last_arp_rx; 1032 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1033 targets_rx[i] = targets_rx[i+1]; 1034 targets_rx[i] = 0; 1035 } 1036 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1037 targets[i] = targets[i+1]; 1038 targets[i] = 0; 1039 1040 return 0; 1041 } 1042 1043 void bond_option_arp_ip_targets_clear(struct bonding *bond) 1044 { 1045 int i; 1046 1047 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 1048 _bond_options_arp_ip_target_set(bond, i, 0, 0); 1049 } 1050 1051 static int bond_option_arp_ip_targets_set(struct bonding *bond, 1052 const struct bond_opt_value *newval) 1053 { 1054 int ret = -EPERM; 1055 __be32 target; 1056 1057 if (newval->string) { 1058 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { 1059 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n", 1060 &target); 1061 return ret; 1062 } 1063 if (newval->string[0] == '+') 1064 ret = bond_option_arp_ip_target_add(bond, target); 1065 else if (newval->string[0] == '-') 1066 ret = bond_option_arp_ip_target_rem(bond, target); 1067 else 1068 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n"); 1069 } else { 1070 target = newval->value; 1071 ret = bond_option_arp_ip_target_add(bond, target); 1072 } 1073 1074 return ret; 1075 } 1076 1077 static int bond_option_arp_validate_set(struct bonding *bond, 1078 const struct bond_opt_value *newval) 1079 { 1080 netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n", 1081 newval->string, newval->value); 1082 1083 if (bond->dev->flags & IFF_UP) { 1084 if (!newval->value) 1085 bond->recv_probe = NULL; 1086 else if (bond->params.arp_interval) 1087 bond->recv_probe = bond_arp_rcv; 1088 } 1089 bond->params.arp_validate = newval->value; 1090 1091 return 0; 1092 } 1093 1094 static int bond_option_arp_all_targets_set(struct bonding *bond, 1095 const struct bond_opt_value *newval) 1096 { 1097 netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n", 1098 newval->string, newval->value); 1099 bond->params.arp_all_targets = newval->value; 1100 1101 return 0; 1102 } 1103 1104 static int bond_option_primary_set(struct bonding *bond, 1105 const struct bond_opt_value *newval) 1106 { 1107 char *p, *primary = newval->string; 1108 struct list_head *iter; 1109 struct slave *slave; 1110 1111 block_netpoll_tx(); 1112 1113 p = strchr(primary, '\n'); 1114 if (p) 1115 *p = '\0'; 1116 /* check to see if we are clearing primary */ 1117 if (!strlen(primary)) { 1118 netdev_info(bond->dev, "Setting primary slave to None\n"); 1119 RCU_INIT_POINTER(bond->primary_slave, NULL); 1120 memset(bond->params.primary, 0, sizeof(bond->params.primary)); 1121 bond_select_active_slave(bond); 1122 goto out; 1123 } 1124 1125 bond_for_each_slave(bond, slave, iter) { 1126 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { 1127 netdev_info(bond->dev, "Setting %s as primary slave\n", 1128 slave->dev->name); 1129 rcu_assign_pointer(bond->primary_slave, slave); 1130 strcpy(bond->params.primary, slave->dev->name); 1131 bond_select_active_slave(bond); 1132 goto out; 1133 } 1134 } 1135 1136 if (rtnl_dereference(bond->primary_slave)) { 1137 netdev_info(bond->dev, "Setting primary slave to None\n"); 1138 RCU_INIT_POINTER(bond->primary_slave, NULL); 1139 bond_select_active_slave(bond); 1140 } 1141 strncpy(bond->params.primary, primary, IFNAMSIZ); 1142 bond->params.primary[IFNAMSIZ - 1] = 0; 1143 1144 netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n", 1145 primary, bond->dev->name); 1146 1147 out: 1148 unblock_netpoll_tx(); 1149 1150 return 0; 1151 } 1152 1153 static int bond_option_primary_reselect_set(struct bonding *bond, 1154 const struct bond_opt_value *newval) 1155 { 1156 netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n", 1157 newval->string, newval->value); 1158 bond->params.primary_reselect = newval->value; 1159 1160 block_netpoll_tx(); 1161 bond_select_active_slave(bond); 1162 unblock_netpoll_tx(); 1163 1164 return 0; 1165 } 1166 1167 static int bond_option_fail_over_mac_set(struct bonding *bond, 1168 const struct bond_opt_value *newval) 1169 { 1170 netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n", 1171 newval->string, newval->value); 1172 bond->params.fail_over_mac = newval->value; 1173 1174 return 0; 1175 } 1176 1177 static int bond_option_xmit_hash_policy_set(struct bonding *bond, 1178 const struct bond_opt_value *newval) 1179 { 1180 netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n", 1181 newval->string, newval->value); 1182 bond->params.xmit_policy = newval->value; 1183 1184 return 0; 1185 } 1186 1187 static int bond_option_resend_igmp_set(struct bonding *bond, 1188 const struct bond_opt_value *newval) 1189 { 1190 netdev_info(bond->dev, "Setting resend_igmp to %llu\n", 1191 newval->value); 1192 bond->params.resend_igmp = newval->value; 1193 1194 return 0; 1195 } 1196 1197 static int bond_option_num_peer_notif_set(struct bonding *bond, 1198 const struct bond_opt_value *newval) 1199 { 1200 bond->params.num_peer_notif = newval->value; 1201 1202 return 0; 1203 } 1204 1205 static int bond_option_all_slaves_active_set(struct bonding *bond, 1206 const struct bond_opt_value *newval) 1207 { 1208 struct list_head *iter; 1209 struct slave *slave; 1210 1211 if (newval->value == bond->params.all_slaves_active) 1212 return 0; 1213 bond->params.all_slaves_active = newval->value; 1214 bond_for_each_slave(bond, slave, iter) { 1215 if (!bond_is_active_slave(slave)) { 1216 if (newval->value) 1217 slave->inactive = 0; 1218 else 1219 slave->inactive = 1; 1220 } 1221 } 1222 1223 return 0; 1224 } 1225 1226 static int bond_option_min_links_set(struct bonding *bond, 1227 const struct bond_opt_value *newval) 1228 { 1229 netdev_info(bond->dev, "Setting min links value to %llu\n", 1230 newval->value); 1231 bond->params.min_links = newval->value; 1232 bond_set_carrier(bond); 1233 1234 return 0; 1235 } 1236 1237 static int bond_option_lp_interval_set(struct bonding *bond, 1238 const struct bond_opt_value *newval) 1239 { 1240 bond->params.lp_interval = newval->value; 1241 1242 return 0; 1243 } 1244 1245 static int bond_option_pps_set(struct bonding *bond, 1246 const struct bond_opt_value *newval) 1247 { 1248 bond->params.packets_per_slave = newval->value; 1249 if (newval->value > 0) { 1250 bond->params.reciprocal_packets_per_slave = 1251 reciprocal_value(newval->value); 1252 } else { 1253 /* reciprocal_packets_per_slave is unused if 1254 * packets_per_slave is 0 or 1, just initialize it 1255 */ 1256 bond->params.reciprocal_packets_per_slave = 1257 (struct reciprocal_value) { 0 }; 1258 } 1259 1260 return 0; 1261 } 1262 1263 static int bond_option_lacp_rate_set(struct bonding *bond, 1264 const struct bond_opt_value *newval) 1265 { 1266 netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n", 1267 newval->string, newval->value); 1268 bond->params.lacp_fast = newval->value; 1269 bond_3ad_update_lacp_rate(bond); 1270 1271 return 0; 1272 } 1273 1274 static int bond_option_ad_select_set(struct bonding *bond, 1275 const struct bond_opt_value *newval) 1276 { 1277 netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n", 1278 newval->string, newval->value); 1279 bond->params.ad_select = newval->value; 1280 1281 return 0; 1282 } 1283 1284 static int bond_option_queue_id_set(struct bonding *bond, 1285 const struct bond_opt_value *newval) 1286 { 1287 struct slave *slave, *update_slave; 1288 struct net_device *sdev; 1289 struct list_head *iter; 1290 char *delim; 1291 int ret = 0; 1292 u16 qid; 1293 1294 /* delim will point to queue id if successful */ 1295 delim = strchr(newval->string, ':'); 1296 if (!delim) 1297 goto err_no_cmd; 1298 1299 /* Terminate string that points to device name and bump it 1300 * up one, so we can read the queue id there. 1301 */ 1302 *delim = '\0'; 1303 if (sscanf(++delim, "%hd\n", &qid) != 1) 1304 goto err_no_cmd; 1305 1306 /* Check buffer length, valid ifname and queue id */ 1307 if (!dev_valid_name(newval->string) || 1308 qid > bond->dev->real_num_tx_queues) 1309 goto err_no_cmd; 1310 1311 /* Get the pointer to that interface if it exists */ 1312 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); 1313 if (!sdev) 1314 goto err_no_cmd; 1315 1316 /* Search for thes slave and check for duplicate qids */ 1317 update_slave = NULL; 1318 bond_for_each_slave(bond, slave, iter) { 1319 if (sdev == slave->dev) 1320 /* We don't need to check the matching 1321 * slave for dups, since we're overwriting it 1322 */ 1323 update_slave = slave; 1324 else if (qid && qid == slave->queue_id) { 1325 goto err_no_cmd; 1326 } 1327 } 1328 1329 if (!update_slave) 1330 goto err_no_cmd; 1331 1332 /* Actually set the qids for the slave */ 1333 update_slave->queue_id = qid; 1334 1335 out: 1336 return ret; 1337 1338 err_no_cmd: 1339 netdev_info(bond->dev, "invalid input for queue_id set\n"); 1340 ret = -EPERM; 1341 goto out; 1342 1343 } 1344 1345 static int bond_option_slaves_set(struct bonding *bond, 1346 const struct bond_opt_value *newval) 1347 { 1348 char command[IFNAMSIZ + 1] = { 0, }; 1349 struct net_device *dev; 1350 char *ifname; 1351 int ret; 1352 1353 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ 1354 ifname = command + 1; 1355 if ((strlen(command) <= 1) || 1356 !dev_valid_name(ifname)) 1357 goto err_no_cmd; 1358 1359 dev = __dev_get_by_name(dev_net(bond->dev), ifname); 1360 if (!dev) { 1361 netdev_info(bond->dev, "interface %s does not exist!\n", 1362 ifname); 1363 ret = -ENODEV; 1364 goto out; 1365 } 1366 1367 switch (command[0]) { 1368 case '+': 1369 netdev_info(bond->dev, "Adding slave %s\n", dev->name); 1370 ret = bond_enslave(bond->dev, dev); 1371 break; 1372 1373 case '-': 1374 netdev_info(bond->dev, "Removing slave %s\n", dev->name); 1375 ret = bond_release(bond->dev, dev); 1376 break; 1377 1378 default: 1379 goto err_no_cmd; 1380 } 1381 1382 out: 1383 return ret; 1384 1385 err_no_cmd: 1386 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n"); 1387 ret = -EPERM; 1388 goto out; 1389 } 1390 1391 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, 1392 const struct bond_opt_value *newval) 1393 { 1394 netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n", 1395 newval->string, newval->value); 1396 bond->params.tlb_dynamic_lb = newval->value; 1397 1398 return 0; 1399 } 1400 1401 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond, 1402 const struct bond_opt_value *newval) 1403 { 1404 netdev_info(bond->dev, "Setting ad_actor_sys_prio to %llu\n", 1405 newval->value); 1406 1407 bond->params.ad_actor_sys_prio = newval->value; 1408 return 0; 1409 } 1410 1411 static int bond_option_ad_actor_system_set(struct bonding *bond, 1412 const struct bond_opt_value *newval) 1413 { 1414 u8 macaddr[ETH_ALEN]; 1415 u8 *mac; 1416 int i; 1417 1418 if (newval->string) { 1419 i = sscanf(newval->string, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 1420 &macaddr[0], &macaddr[1], &macaddr[2], 1421 &macaddr[3], &macaddr[4], &macaddr[5]); 1422 if (i != ETH_ALEN) 1423 goto err; 1424 mac = macaddr; 1425 } else { 1426 mac = (u8 *)&newval->value; 1427 } 1428 1429 if (!is_valid_ether_addr(mac)) 1430 goto err; 1431 1432 netdev_info(bond->dev, "Setting ad_actor_system to %pM\n", mac); 1433 ether_addr_copy(bond->params.ad_actor_system, mac); 1434 return 0; 1435 1436 err: 1437 netdev_err(bond->dev, "Invalid MAC address.\n"); 1438 return -EINVAL; 1439 } 1440 1441 static int bond_option_ad_user_port_key_set(struct bonding *bond, 1442 const struct bond_opt_value *newval) 1443 { 1444 netdev_info(bond->dev, "Setting ad_user_port_key to %llu\n", 1445 newval->value); 1446 1447 bond->params.ad_user_port_key = newval->value; 1448 return 0; 1449 } 1450