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 .values = bond_ad_actor_sys_prio_tbl, 406 .set = bond_option_ad_actor_sys_prio_set, 407 }, 408 [BOND_OPT_AD_ACTOR_SYSTEM] = { 409 .id = BOND_OPT_AD_ACTOR_SYSTEM, 410 .name = "ad_actor_system", 411 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), 412 .flags = BOND_OPTFLAG_RAWVAL, 413 .set = bond_option_ad_actor_system_set, 414 }, 415 [BOND_OPT_AD_USER_PORT_KEY] = { 416 .id = BOND_OPT_AD_USER_PORT_KEY, 417 .name = "ad_user_port_key", 418 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), 419 .flags = BOND_OPTFLAG_IFDOWN, 420 .values = bond_ad_user_port_key_tbl, 421 .set = bond_option_ad_user_port_key_set, 422 }, 423 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = { 424 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS, 425 .name = "num_grat_arp", 426 .desc = "Number of peer notifications to send on failover event", 427 .values = bond_num_peer_notif_tbl, 428 .set = bond_option_num_peer_notif_set 429 } 430 }; 431 432 /* Searches for an option by name */ 433 const struct bond_option *bond_opt_get_by_name(const char *name) 434 { 435 const struct bond_option *opt; 436 int option; 437 438 for (option = 0; option < BOND_OPT_LAST; option++) { 439 opt = bond_opt_get(option); 440 if (opt && !strcmp(opt->name, name)) 441 return opt; 442 } 443 444 return NULL; 445 } 446 447 /* Searches for a value in opt's values[] table */ 448 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) 449 { 450 const struct bond_option *opt; 451 int i; 452 453 opt = bond_opt_get(option); 454 if (WARN_ON(!opt)) 455 return NULL; 456 for (i = 0; opt->values && opt->values[i].string; i++) 457 if (opt->values[i].value == val) 458 return &opt->values[i]; 459 460 return NULL; 461 } 462 463 /* Searches for a value in opt's values[] table which matches the flagmask */ 464 static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, 465 u32 flagmask) 466 { 467 int i; 468 469 for (i = 0; opt->values && opt->values[i].string; i++) 470 if (opt->values[i].flags & flagmask) 471 return &opt->values[i]; 472 473 return NULL; 474 } 475 476 /* If maxval is missing then there's no range to check. In case minval is 477 * missing then it's considered to be 0. 478 */ 479 static bool bond_opt_check_range(const struct bond_option *opt, u64 val) 480 { 481 const struct bond_opt_value *minval, *maxval; 482 483 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); 484 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); 485 if (!maxval || (minval && val < minval->value) || val > maxval->value) 486 return false; 487 488 return true; 489 } 490 491 /** 492 * bond_opt_parse - parse option value 493 * @opt: the option to parse against 494 * @val: value to parse 495 * 496 * This function tries to extract the value from @val and check if it's 497 * a possible match for the option and returns NULL if a match isn't found, 498 * or the struct_opt_value that matched. It also strips the new line from 499 * @val->string if it's present. 500 */ 501 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, 502 struct bond_opt_value *val) 503 { 504 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; 505 const struct bond_opt_value *tbl; 506 const struct bond_opt_value *ret = NULL; 507 bool checkval; 508 int i, rv; 509 510 /* No parsing if the option wants a raw val */ 511 if (opt->flags & BOND_OPTFLAG_RAWVAL) 512 return val; 513 514 tbl = opt->values; 515 if (!tbl) 516 goto out; 517 518 /* ULLONG_MAX is used to bypass string processing */ 519 checkval = val->value != ULLONG_MAX; 520 if (!checkval) { 521 if (!val->string) 522 goto out; 523 p = strchr(val->string, '\n'); 524 if (p) 525 *p = '\0'; 526 for (p = val->string; *p; p++) 527 if (!(isdigit(*p) || isspace(*p))) 528 break; 529 /* The following code extracts the string to match or the value 530 * and sets checkval appropriately 531 */ 532 if (*p) { 533 rv = sscanf(val->string, "%32s", valstr); 534 } else { 535 rv = sscanf(val->string, "%llu", &val->value); 536 checkval = true; 537 } 538 if (!rv) 539 goto out; 540 } 541 542 for (i = 0; tbl[i].string; i++) { 543 /* Check for exact match */ 544 if (checkval) { 545 if (val->value == tbl[i].value) 546 ret = &tbl[i]; 547 } else { 548 if (!strcmp(valstr, "default") && 549 (tbl[i].flags & BOND_VALFLAG_DEFAULT)) 550 ret = &tbl[i]; 551 552 if (!strcmp(valstr, tbl[i].string)) 553 ret = &tbl[i]; 554 } 555 /* Found an exact match */ 556 if (ret) 557 goto out; 558 } 559 /* Possible range match */ 560 if (checkval && bond_opt_check_range(opt, val->value)) 561 ret = val; 562 out: 563 return ret; 564 } 565 566 /* Check opt's dependencies against bond mode and currently set options */ 567 static int bond_opt_check_deps(struct bonding *bond, 568 const struct bond_option *opt) 569 { 570 struct bond_params *params = &bond->params; 571 572 if (test_bit(params->mode, &opt->unsuppmodes)) 573 return -EACCES; 574 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) 575 return -ENOTEMPTY; 576 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) 577 return -EBUSY; 578 579 return 0; 580 } 581 582 static void bond_opt_dep_print(struct bonding *bond, 583 const struct bond_option *opt) 584 { 585 const struct bond_opt_value *modeval; 586 struct bond_params *params; 587 588 params = &bond->params; 589 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); 590 if (test_bit(params->mode, &opt->unsuppmodes)) 591 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n", 592 opt->name, modeval->string, modeval->value); 593 } 594 595 static void bond_opt_error_interpret(struct bonding *bond, 596 const struct bond_option *opt, 597 int error, const struct bond_opt_value *val) 598 { 599 const struct bond_opt_value *minval, *maxval; 600 char *p; 601 602 switch (error) { 603 case -EINVAL: 604 if (val) { 605 if (val->string) { 606 /* sometimes RAWVAL opts may have new lines */ 607 p = strchr(val->string, '\n'); 608 if (p) 609 *p = '\0'; 610 netdev_err(bond->dev, "option %s: invalid value (%s)\n", 611 opt->name, val->string); 612 } else { 613 netdev_err(bond->dev, "option %s: invalid value (%llu)\n", 614 opt->name, val->value); 615 } 616 } 617 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); 618 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); 619 if (!maxval) 620 break; 621 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n", 622 opt->name, minval ? minval->value : 0, maxval->value); 623 break; 624 case -EACCES: 625 bond_opt_dep_print(bond, opt); 626 break; 627 case -ENOTEMPTY: 628 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n", 629 opt->name); 630 break; 631 case -EBUSY: 632 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n", 633 opt->name); 634 break; 635 default: 636 break; 637 } 638 } 639 640 /** 641 * __bond_opt_set - set a bonding option 642 * @bond: target bond device 643 * @option: option to set 644 * @val: value to set it to 645 * 646 * This function is used to change the bond's option value, it can be 647 * used for both enabling/changing an option and for disabling it. RTNL lock 648 * must be obtained before calling this function. 649 */ 650 int __bond_opt_set(struct bonding *bond, 651 unsigned int option, struct bond_opt_value *val) 652 { 653 const struct bond_opt_value *retval = NULL; 654 const struct bond_option *opt; 655 int ret = -ENOENT; 656 657 ASSERT_RTNL(); 658 659 opt = bond_opt_get(option); 660 if (WARN_ON(!val) || WARN_ON(!opt)) 661 goto out; 662 ret = bond_opt_check_deps(bond, opt); 663 if (ret) 664 goto out; 665 retval = bond_opt_parse(opt, val); 666 if (!retval) { 667 ret = -EINVAL; 668 goto out; 669 } 670 ret = opt->set(bond, retval); 671 out: 672 if (ret) 673 bond_opt_error_interpret(bond, opt, ret, val); 674 else if (bond->dev->reg_state == NETREG_REGISTERED) 675 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev); 676 677 return ret; 678 } 679 680 /** 681 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set 682 * @bond: target bond device 683 * @option: option to set 684 * @buf: value to set it to 685 * 686 * This function tries to acquire RTNL without blocking and if successful 687 * calls __bond_opt_set. It is mainly used for sysfs option manipulation. 688 */ 689 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) 690 { 691 struct bond_opt_value optval; 692 int ret; 693 694 if (!rtnl_trylock()) 695 return restart_syscall(); 696 bond_opt_initstr(&optval, buf); 697 ret = __bond_opt_set(bond, option, &optval); 698 rtnl_unlock(); 699 700 return ret; 701 } 702 703 /** 704 * bond_opt_get - get a pointer to an option 705 * @option: option for which to return a pointer 706 * 707 * This function checks if option is valid and if so returns a pointer 708 * to its entry in the bond_opts[] option array. 709 */ 710 const struct bond_option *bond_opt_get(unsigned int option) 711 { 712 if (!BOND_OPT_VALID(option)) 713 return NULL; 714 715 return &bond_opts[option]; 716 } 717 718 static int bond_option_mode_set(struct bonding *bond, 719 const struct bond_opt_value *newval) 720 { 721 if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) { 722 netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n", 723 newval->string); 724 /* disable arp monitoring */ 725 bond->params.arp_interval = 0; 726 /* set miimon to default value */ 727 bond->params.miimon = BOND_DEFAULT_MIIMON; 728 netdev_info(bond->dev, "Setting MII monitoring interval to %d\n", 729 bond->params.miimon); 730 } 731 732 /* don't cache arp_validate between modes */ 733 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; 734 bond->params.mode = newval->value; 735 736 return 0; 737 } 738 739 static int bond_option_active_slave_set(struct bonding *bond, 740 const struct bond_opt_value *newval) 741 { 742 char ifname[IFNAMSIZ] = { 0, }; 743 struct net_device *slave_dev; 744 int ret = 0; 745 746 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ 747 if (!strlen(ifname) || newval->string[0] == '\n') { 748 slave_dev = NULL; 749 } else { 750 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); 751 if (!slave_dev) 752 return -ENODEV; 753 } 754 755 if (slave_dev) { 756 if (!netif_is_bond_slave(slave_dev)) { 757 netdev_err(bond->dev, "Device %s is not bonding slave\n", 758 slave_dev->name); 759 return -EINVAL; 760 } 761 762 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { 763 netdev_err(bond->dev, "Device %s is not our slave\n", 764 slave_dev->name); 765 return -EINVAL; 766 } 767 } 768 769 block_netpoll_tx(); 770 /* check to see if we are clearing active */ 771 if (!slave_dev) { 772 netdev_info(bond->dev, "Clearing current active slave\n"); 773 RCU_INIT_POINTER(bond->curr_active_slave, NULL); 774 bond_select_active_slave(bond); 775 } else { 776 struct slave *old_active = rtnl_dereference(bond->curr_active_slave); 777 struct slave *new_active = bond_slave_get_rtnl(slave_dev); 778 779 BUG_ON(!new_active); 780 781 if (new_active == old_active) { 782 /* do nothing */ 783 netdev_info(bond->dev, "%s is already the current active slave\n", 784 new_active->dev->name); 785 } else { 786 if (old_active && (new_active->link == BOND_LINK_UP) && 787 bond_slave_is_up(new_active)) { 788 netdev_info(bond->dev, "Setting %s as active slave\n", 789 new_active->dev->name); 790 bond_change_active_slave(bond, new_active); 791 } else { 792 netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n", 793 new_active->dev->name, 794 new_active->dev->name); 795 ret = -EINVAL; 796 } 797 } 798 } 799 unblock_netpoll_tx(); 800 801 return ret; 802 } 803 804 /* There are two tricky bits here. First, if MII monitoring is activated, then 805 * we must disable ARP monitoring. Second, if the timer isn't running, we must 806 * start it. 807 */ 808 static int bond_option_miimon_set(struct bonding *bond, 809 const struct bond_opt_value *newval) 810 { 811 netdev_info(bond->dev, "Setting MII monitoring interval to %llu\n", 812 newval->value); 813 bond->params.miimon = newval->value; 814 if (bond->params.updelay) 815 netdev_info(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n", 816 bond->params.updelay * bond->params.miimon); 817 if (bond->params.downdelay) 818 netdev_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", 819 bond->params.downdelay * bond->params.miimon); 820 if (newval->value && bond->params.arp_interval) { 821 netdev_info(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n"); 822 bond->params.arp_interval = 0; 823 if (bond->params.arp_validate) 824 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; 825 } 826 if (bond->dev->flags & IFF_UP) { 827 /* If the interface is up, we may need to fire off 828 * the MII timer. If the interface is down, the 829 * timer will get fired off when the open function 830 * is called. 831 */ 832 if (!newval->value) { 833 cancel_delayed_work_sync(&bond->mii_work); 834 } else { 835 cancel_delayed_work_sync(&bond->arp_work); 836 queue_delayed_work(bond->wq, &bond->mii_work, 0); 837 } 838 } 839 840 return 0; 841 } 842 843 /* Set up and down delays. These must be multiples of the 844 * MII monitoring value, and are stored internally as the multiplier. 845 * Thus, we must translate to MS for the real world. 846 */ 847 static int bond_option_updelay_set(struct bonding *bond, 848 const struct bond_opt_value *newval) 849 { 850 int value = newval->value; 851 852 if (!bond->params.miimon) { 853 netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n"); 854 return -EPERM; 855 } 856 if ((value % bond->params.miimon) != 0) { 857 netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", 858 value, bond->params.miimon, 859 (value / bond->params.miimon) * 860 bond->params.miimon); 861 } 862 bond->params.updelay = value / bond->params.miimon; 863 netdev_info(bond->dev, "Setting up delay to %d\n", 864 bond->params.updelay * bond->params.miimon); 865 866 return 0; 867 } 868 869 static int bond_option_downdelay_set(struct bonding *bond, 870 const struct bond_opt_value *newval) 871 { 872 int value = newval->value; 873 874 if (!bond->params.miimon) { 875 netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n"); 876 return -EPERM; 877 } 878 if ((value % bond->params.miimon) != 0) { 879 netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", 880 value, bond->params.miimon, 881 (value / bond->params.miimon) * 882 bond->params.miimon); 883 } 884 bond->params.downdelay = value / bond->params.miimon; 885 netdev_info(bond->dev, "Setting down delay to %d\n", 886 bond->params.downdelay * bond->params.miimon); 887 888 return 0; 889 } 890 891 static int bond_option_use_carrier_set(struct bonding *bond, 892 const struct bond_opt_value *newval) 893 { 894 netdev_info(bond->dev, "Setting use_carrier to %llu\n", 895 newval->value); 896 bond->params.use_carrier = newval->value; 897 898 return 0; 899 } 900 901 /* There are two tricky bits here. First, if ARP monitoring is activated, then 902 * we must disable MII monitoring. Second, if the ARP timer isn't running, 903 * we must start it. 904 */ 905 static int bond_option_arp_interval_set(struct bonding *bond, 906 const struct bond_opt_value *newval) 907 { 908 netdev_info(bond->dev, "Setting ARP monitoring interval to %llu\n", 909 newval->value); 910 bond->params.arp_interval = newval->value; 911 if (newval->value) { 912 if (bond->params.miimon) { 913 netdev_info(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n"); 914 bond->params.miimon = 0; 915 } 916 if (!bond->params.arp_targets[0]) 917 netdev_info(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n"); 918 } 919 if (bond->dev->flags & IFF_UP) { 920 /* If the interface is up, we may need to fire off 921 * the ARP timer. If the interface is down, the 922 * timer will get fired off when the open function 923 * is called. 924 */ 925 if (!newval->value) { 926 if (bond->params.arp_validate) 927 bond->recv_probe = NULL; 928 cancel_delayed_work_sync(&bond->arp_work); 929 } else { 930 /* arp_validate can be set only in active-backup mode */ 931 bond->recv_probe = bond_arp_rcv; 932 cancel_delayed_work_sync(&bond->mii_work); 933 queue_delayed_work(bond->wq, &bond->arp_work, 0); 934 } 935 } 936 937 return 0; 938 } 939 940 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, 941 __be32 target, 942 unsigned long last_rx) 943 { 944 __be32 *targets = bond->params.arp_targets; 945 struct list_head *iter; 946 struct slave *slave; 947 948 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { 949 bond_for_each_slave(bond, slave, iter) 950 slave->target_last_arp_rx[slot] = last_rx; 951 targets[slot] = target; 952 } 953 } 954 955 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 956 { 957 __be32 *targets = bond->params.arp_targets; 958 int ind; 959 960 if (!bond_is_ip_target_ok(target)) { 961 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n", 962 &target); 963 return -EINVAL; 964 } 965 966 if (bond_get_targets_ip(targets, target) != -1) { /* dup */ 967 netdev_err(bond->dev, "ARP target %pI4 is already present\n", 968 &target); 969 return -EINVAL; 970 } 971 972 ind = bond_get_targets_ip(targets, 0); /* first free slot */ 973 if (ind == -1) { 974 netdev_err(bond->dev, "ARP target table is full!\n"); 975 return -EINVAL; 976 } 977 978 netdev_info(bond->dev, "Adding ARP target %pI4\n", &target); 979 980 _bond_options_arp_ip_target_set(bond, ind, target, jiffies); 981 982 return 0; 983 } 984 985 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 986 { 987 return _bond_option_arp_ip_target_add(bond, target); 988 } 989 990 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) 991 { 992 __be32 *targets = bond->params.arp_targets; 993 struct list_head *iter; 994 struct slave *slave; 995 unsigned long *targets_rx; 996 int ind, i; 997 998 if (!bond_is_ip_target_ok(target)) { 999 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n", 1000 &target); 1001 return -EINVAL; 1002 } 1003 1004 ind = bond_get_targets_ip(targets, target); 1005 if (ind == -1) { 1006 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n", 1007 &target); 1008 return -EINVAL; 1009 } 1010 1011 if (ind == 0 && !targets[1] && bond->params.arp_interval) 1012 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 1013 1014 netdev_info(bond->dev, "Removing ARP target %pI4\n", &target); 1015 1016 bond_for_each_slave(bond, slave, iter) { 1017 targets_rx = slave->target_last_arp_rx; 1018 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1019 targets_rx[i] = targets_rx[i+1]; 1020 targets_rx[i] = 0; 1021 } 1022 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1023 targets[i] = targets[i+1]; 1024 targets[i] = 0; 1025 1026 return 0; 1027 } 1028 1029 void bond_option_arp_ip_targets_clear(struct bonding *bond) 1030 { 1031 int i; 1032 1033 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 1034 _bond_options_arp_ip_target_set(bond, i, 0, 0); 1035 } 1036 1037 static int bond_option_arp_ip_targets_set(struct bonding *bond, 1038 const struct bond_opt_value *newval) 1039 { 1040 int ret = -EPERM; 1041 __be32 target; 1042 1043 if (newval->string) { 1044 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { 1045 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n", 1046 &target); 1047 return ret; 1048 } 1049 if (newval->string[0] == '+') 1050 ret = bond_option_arp_ip_target_add(bond, target); 1051 else if (newval->string[0] == '-') 1052 ret = bond_option_arp_ip_target_rem(bond, target); 1053 else 1054 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n"); 1055 } else { 1056 target = newval->value; 1057 ret = bond_option_arp_ip_target_add(bond, target); 1058 } 1059 1060 return ret; 1061 } 1062 1063 static int bond_option_arp_validate_set(struct bonding *bond, 1064 const struct bond_opt_value *newval) 1065 { 1066 netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n", 1067 newval->string, newval->value); 1068 1069 if (bond->dev->flags & IFF_UP) { 1070 if (!newval->value) 1071 bond->recv_probe = NULL; 1072 else if (bond->params.arp_interval) 1073 bond->recv_probe = bond_arp_rcv; 1074 } 1075 bond->params.arp_validate = newval->value; 1076 1077 return 0; 1078 } 1079 1080 static int bond_option_arp_all_targets_set(struct bonding *bond, 1081 const struct bond_opt_value *newval) 1082 { 1083 netdev_info(bond->dev, "Setting arp_all_targets to %s (%llu)\n", 1084 newval->string, newval->value); 1085 bond->params.arp_all_targets = newval->value; 1086 1087 return 0; 1088 } 1089 1090 static int bond_option_primary_set(struct bonding *bond, 1091 const struct bond_opt_value *newval) 1092 { 1093 char *p, *primary = newval->string; 1094 struct list_head *iter; 1095 struct slave *slave; 1096 1097 block_netpoll_tx(); 1098 1099 p = strchr(primary, '\n'); 1100 if (p) 1101 *p = '\0'; 1102 /* check to see if we are clearing primary */ 1103 if (!strlen(primary)) { 1104 netdev_info(bond->dev, "Setting primary slave to None\n"); 1105 RCU_INIT_POINTER(bond->primary_slave, NULL); 1106 memset(bond->params.primary, 0, sizeof(bond->params.primary)); 1107 bond_select_active_slave(bond); 1108 goto out; 1109 } 1110 1111 bond_for_each_slave(bond, slave, iter) { 1112 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { 1113 netdev_info(bond->dev, "Setting %s as primary slave\n", 1114 slave->dev->name); 1115 rcu_assign_pointer(bond->primary_slave, slave); 1116 strcpy(bond->params.primary, slave->dev->name); 1117 bond_select_active_slave(bond); 1118 goto out; 1119 } 1120 } 1121 1122 if (rtnl_dereference(bond->primary_slave)) { 1123 netdev_info(bond->dev, "Setting primary slave to None\n"); 1124 RCU_INIT_POINTER(bond->primary_slave, NULL); 1125 bond_select_active_slave(bond); 1126 } 1127 strncpy(bond->params.primary, primary, IFNAMSIZ); 1128 bond->params.primary[IFNAMSIZ - 1] = 0; 1129 1130 netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n", 1131 primary, bond->dev->name); 1132 1133 out: 1134 unblock_netpoll_tx(); 1135 1136 return 0; 1137 } 1138 1139 static int bond_option_primary_reselect_set(struct bonding *bond, 1140 const struct bond_opt_value *newval) 1141 { 1142 netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n", 1143 newval->string, newval->value); 1144 bond->params.primary_reselect = newval->value; 1145 1146 block_netpoll_tx(); 1147 bond_select_active_slave(bond); 1148 unblock_netpoll_tx(); 1149 1150 return 0; 1151 } 1152 1153 static int bond_option_fail_over_mac_set(struct bonding *bond, 1154 const struct bond_opt_value *newval) 1155 { 1156 netdev_info(bond->dev, "Setting fail_over_mac to %s (%llu)\n", 1157 newval->string, newval->value); 1158 bond->params.fail_over_mac = newval->value; 1159 1160 return 0; 1161 } 1162 1163 static int bond_option_xmit_hash_policy_set(struct bonding *bond, 1164 const struct bond_opt_value *newval) 1165 { 1166 netdev_info(bond->dev, "Setting xmit hash policy to %s (%llu)\n", 1167 newval->string, newval->value); 1168 bond->params.xmit_policy = newval->value; 1169 1170 return 0; 1171 } 1172 1173 static int bond_option_resend_igmp_set(struct bonding *bond, 1174 const struct bond_opt_value *newval) 1175 { 1176 netdev_info(bond->dev, "Setting resend_igmp to %llu\n", 1177 newval->value); 1178 bond->params.resend_igmp = newval->value; 1179 1180 return 0; 1181 } 1182 1183 static int bond_option_num_peer_notif_set(struct bonding *bond, 1184 const struct bond_opt_value *newval) 1185 { 1186 bond->params.num_peer_notif = newval->value; 1187 1188 return 0; 1189 } 1190 1191 static int bond_option_all_slaves_active_set(struct bonding *bond, 1192 const struct bond_opt_value *newval) 1193 { 1194 struct list_head *iter; 1195 struct slave *slave; 1196 1197 if (newval->value == bond->params.all_slaves_active) 1198 return 0; 1199 bond->params.all_slaves_active = newval->value; 1200 bond_for_each_slave(bond, slave, iter) { 1201 if (!bond_is_active_slave(slave)) { 1202 if (newval->value) 1203 slave->inactive = 0; 1204 else 1205 slave->inactive = 1; 1206 } 1207 } 1208 1209 return 0; 1210 } 1211 1212 static int bond_option_min_links_set(struct bonding *bond, 1213 const struct bond_opt_value *newval) 1214 { 1215 netdev_info(bond->dev, "Setting min links value to %llu\n", 1216 newval->value); 1217 bond->params.min_links = newval->value; 1218 bond_set_carrier(bond); 1219 1220 return 0; 1221 } 1222 1223 static int bond_option_lp_interval_set(struct bonding *bond, 1224 const struct bond_opt_value *newval) 1225 { 1226 bond->params.lp_interval = newval->value; 1227 1228 return 0; 1229 } 1230 1231 static int bond_option_pps_set(struct bonding *bond, 1232 const struct bond_opt_value *newval) 1233 { 1234 bond->params.packets_per_slave = newval->value; 1235 if (newval->value > 0) { 1236 bond->params.reciprocal_packets_per_slave = 1237 reciprocal_value(newval->value); 1238 } else { 1239 /* reciprocal_packets_per_slave is unused if 1240 * packets_per_slave is 0 or 1, just initialize it 1241 */ 1242 bond->params.reciprocal_packets_per_slave = 1243 (struct reciprocal_value) { 0 }; 1244 } 1245 1246 return 0; 1247 } 1248 1249 static int bond_option_lacp_rate_set(struct bonding *bond, 1250 const struct bond_opt_value *newval) 1251 { 1252 netdev_info(bond->dev, "Setting LACP rate to %s (%llu)\n", 1253 newval->string, newval->value); 1254 bond->params.lacp_fast = newval->value; 1255 bond_3ad_update_lacp_rate(bond); 1256 1257 return 0; 1258 } 1259 1260 static int bond_option_ad_select_set(struct bonding *bond, 1261 const struct bond_opt_value *newval) 1262 { 1263 netdev_info(bond->dev, "Setting ad_select to %s (%llu)\n", 1264 newval->string, newval->value); 1265 bond->params.ad_select = newval->value; 1266 1267 return 0; 1268 } 1269 1270 static int bond_option_queue_id_set(struct bonding *bond, 1271 const struct bond_opt_value *newval) 1272 { 1273 struct slave *slave, *update_slave; 1274 struct net_device *sdev; 1275 struct list_head *iter; 1276 char *delim; 1277 int ret = 0; 1278 u16 qid; 1279 1280 /* delim will point to queue id if successful */ 1281 delim = strchr(newval->string, ':'); 1282 if (!delim) 1283 goto err_no_cmd; 1284 1285 /* Terminate string that points to device name and bump it 1286 * up one, so we can read the queue id there. 1287 */ 1288 *delim = '\0'; 1289 if (sscanf(++delim, "%hd\n", &qid) != 1) 1290 goto err_no_cmd; 1291 1292 /* Check buffer length, valid ifname and queue id */ 1293 if (!dev_valid_name(newval->string) || 1294 qid > bond->dev->real_num_tx_queues) 1295 goto err_no_cmd; 1296 1297 /* Get the pointer to that interface if it exists */ 1298 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); 1299 if (!sdev) 1300 goto err_no_cmd; 1301 1302 /* Search for thes slave and check for duplicate qids */ 1303 update_slave = NULL; 1304 bond_for_each_slave(bond, slave, iter) { 1305 if (sdev == slave->dev) 1306 /* We don't need to check the matching 1307 * slave for dups, since we're overwriting it 1308 */ 1309 update_slave = slave; 1310 else if (qid && qid == slave->queue_id) { 1311 goto err_no_cmd; 1312 } 1313 } 1314 1315 if (!update_slave) 1316 goto err_no_cmd; 1317 1318 /* Actually set the qids for the slave */ 1319 update_slave->queue_id = qid; 1320 1321 out: 1322 return ret; 1323 1324 err_no_cmd: 1325 netdev_info(bond->dev, "invalid input for queue_id set\n"); 1326 ret = -EPERM; 1327 goto out; 1328 1329 } 1330 1331 static int bond_option_slaves_set(struct bonding *bond, 1332 const struct bond_opt_value *newval) 1333 { 1334 char command[IFNAMSIZ + 1] = { 0, }; 1335 struct net_device *dev; 1336 char *ifname; 1337 int ret; 1338 1339 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ 1340 ifname = command + 1; 1341 if ((strlen(command) <= 1) || 1342 !dev_valid_name(ifname)) 1343 goto err_no_cmd; 1344 1345 dev = __dev_get_by_name(dev_net(bond->dev), ifname); 1346 if (!dev) { 1347 netdev_info(bond->dev, "interface %s does not exist!\n", 1348 ifname); 1349 ret = -ENODEV; 1350 goto out; 1351 } 1352 1353 switch (command[0]) { 1354 case '+': 1355 netdev_info(bond->dev, "Adding slave %s\n", dev->name); 1356 ret = bond_enslave(bond->dev, dev); 1357 break; 1358 1359 case '-': 1360 netdev_info(bond->dev, "Removing slave %s\n", dev->name); 1361 ret = bond_release(bond->dev, dev); 1362 break; 1363 1364 default: 1365 goto err_no_cmd; 1366 } 1367 1368 out: 1369 return ret; 1370 1371 err_no_cmd: 1372 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n"); 1373 ret = -EPERM; 1374 goto out; 1375 } 1376 1377 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, 1378 const struct bond_opt_value *newval) 1379 { 1380 netdev_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n", 1381 newval->string, newval->value); 1382 bond->params.tlb_dynamic_lb = newval->value; 1383 1384 return 0; 1385 } 1386 1387 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond, 1388 const struct bond_opt_value *newval) 1389 { 1390 netdev_info(bond->dev, "Setting ad_actor_sys_prio to %llu\n", 1391 newval->value); 1392 1393 bond->params.ad_actor_sys_prio = newval->value; 1394 bond_3ad_update_ad_actor_settings(bond); 1395 1396 return 0; 1397 } 1398 1399 static int bond_option_ad_actor_system_set(struct bonding *bond, 1400 const struct bond_opt_value *newval) 1401 { 1402 u8 macaddr[ETH_ALEN]; 1403 u8 *mac; 1404 int i; 1405 1406 if (newval->string) { 1407 i = sscanf(newval->string, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 1408 &macaddr[0], &macaddr[1], &macaddr[2], 1409 &macaddr[3], &macaddr[4], &macaddr[5]); 1410 if (i != ETH_ALEN) 1411 goto err; 1412 mac = macaddr; 1413 } else { 1414 mac = (u8 *)&newval->value; 1415 } 1416 1417 if (!is_valid_ether_addr(mac)) 1418 goto err; 1419 1420 netdev_info(bond->dev, "Setting ad_actor_system to %pM\n", mac); 1421 ether_addr_copy(bond->params.ad_actor_system, mac); 1422 bond_3ad_update_ad_actor_settings(bond); 1423 1424 return 0; 1425 1426 err: 1427 netdev_err(bond->dev, "Invalid MAC address.\n"); 1428 return -EINVAL; 1429 } 1430 1431 static int bond_option_ad_user_port_key_set(struct bonding *bond, 1432 const struct bond_opt_value *newval) 1433 { 1434 netdev_info(bond->dev, "Setting ad_user_port_key to %llu\n", 1435 newval->value); 1436 1437 bond->params.ad_user_port_key = newval->value; 1438 return 0; 1439 } 1440