1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * drivers/net/bond/bond_options.c - bonding options 4 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us> 5 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com> 6 */ 7 8 #include <linux/errno.h> 9 #include <linux/if.h> 10 #include <linux/netdevice.h> 11 #include <linux/spinlock.h> 12 #include <linux/rcupdate.h> 13 #include <linux/ctype.h> 14 #include <linux/inet.h> 15 #include <linux/sched/signal.h> 16 17 #include <net/bonding.h> 18 19 static int bond_option_active_slave_set(struct bonding *bond, 20 const struct bond_opt_value *newval); 21 static int bond_option_miimon_set(struct bonding *bond, 22 const struct bond_opt_value *newval); 23 static int bond_option_updelay_set(struct bonding *bond, 24 const struct bond_opt_value *newval); 25 static int bond_option_downdelay_set(struct bonding *bond, 26 const struct bond_opt_value *newval); 27 static int bond_option_peer_notif_delay_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) | BIT(BOND_MODE_ALB)), 397 .values = bond_tlb_dynamic_lb_tbl, 398 .flags = BOND_OPTFLAG_IFDOWN, 399 .set = bond_option_tlb_dynamic_lb_set, 400 }, 401 [BOND_OPT_AD_ACTOR_SYS_PRIO] = { 402 .id = BOND_OPT_AD_ACTOR_SYS_PRIO, 403 .name = "ad_actor_sys_prio", 404 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), 405 .values = bond_ad_actor_sys_prio_tbl, 406 .set = bond_option_ad_actor_sys_prio_set, 407 }, 408 [BOND_OPT_AD_ACTOR_SYSTEM] = { 409 .id = BOND_OPT_AD_ACTOR_SYSTEM, 410 .name = "ad_actor_system", 411 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), 412 .flags = BOND_OPTFLAG_RAWVAL, 413 .set = bond_option_ad_actor_system_set, 414 }, 415 [BOND_OPT_AD_USER_PORT_KEY] = { 416 .id = BOND_OPT_AD_USER_PORT_KEY, 417 .name = "ad_user_port_key", 418 .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)), 419 .flags = BOND_OPTFLAG_IFDOWN, 420 .values = bond_ad_user_port_key_tbl, 421 .set = bond_option_ad_user_port_key_set, 422 }, 423 [BOND_OPT_NUM_PEER_NOTIF_ALIAS] = { 424 .id = BOND_OPT_NUM_PEER_NOTIF_ALIAS, 425 .name = "num_grat_arp", 426 .desc = "Number of peer notifications to send on failover event", 427 .values = bond_num_peer_notif_tbl, 428 .set = bond_option_num_peer_notif_set 429 }, 430 [BOND_OPT_PEER_NOTIF_DELAY] = { 431 .id = BOND_OPT_PEER_NOTIF_DELAY, 432 .name = "peer_notif_delay", 433 .desc = "Delay between each peer notification on failover event, in milliseconds", 434 .values = bond_intmax_tbl, 435 .set = bond_option_peer_notif_delay_set 436 } 437 }; 438 439 /* Searches for an option by name */ 440 const struct bond_option *bond_opt_get_by_name(const char *name) 441 { 442 const struct bond_option *opt; 443 int option; 444 445 for (option = 0; option < BOND_OPT_LAST; option++) { 446 opt = bond_opt_get(option); 447 if (opt && !strcmp(opt->name, name)) 448 return opt; 449 } 450 451 return NULL; 452 } 453 454 /* Searches for a value in opt's values[] table */ 455 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val) 456 { 457 const struct bond_option *opt; 458 int i; 459 460 opt = bond_opt_get(option); 461 if (WARN_ON(!opt)) 462 return NULL; 463 for (i = 0; opt->values && opt->values[i].string; i++) 464 if (opt->values[i].value == val) 465 return &opt->values[i]; 466 467 return NULL; 468 } 469 470 /* Searches for a value in opt's values[] table which matches the flagmask */ 471 static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt, 472 u32 flagmask) 473 { 474 int i; 475 476 for (i = 0; opt->values && opt->values[i].string; i++) 477 if (opt->values[i].flags & flagmask) 478 return &opt->values[i]; 479 480 return NULL; 481 } 482 483 /* If maxval is missing then there's no range to check. In case minval is 484 * missing then it's considered to be 0. 485 */ 486 static bool bond_opt_check_range(const struct bond_option *opt, u64 val) 487 { 488 const struct bond_opt_value *minval, *maxval; 489 490 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); 491 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); 492 if (!maxval || (minval && val < minval->value) || val > maxval->value) 493 return false; 494 495 return true; 496 } 497 498 /** 499 * bond_opt_parse - parse option value 500 * @opt: the option to parse against 501 * @val: value to parse 502 * 503 * This function tries to extract the value from @val and check if it's 504 * a possible match for the option and returns NULL if a match isn't found, 505 * or the struct_opt_value that matched. It also strips the new line from 506 * @val->string if it's present. 507 */ 508 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, 509 struct bond_opt_value *val) 510 { 511 char *p, valstr[BOND_OPT_MAX_NAMELEN + 1] = { 0, }; 512 const struct bond_opt_value *tbl; 513 const struct bond_opt_value *ret = NULL; 514 bool checkval; 515 int i, rv; 516 517 /* No parsing if the option wants a raw val */ 518 if (opt->flags & BOND_OPTFLAG_RAWVAL) 519 return val; 520 521 tbl = opt->values; 522 if (!tbl) 523 goto out; 524 525 /* ULLONG_MAX is used to bypass string processing */ 526 checkval = val->value != ULLONG_MAX; 527 if (!checkval) { 528 if (!val->string) 529 goto out; 530 p = strchr(val->string, '\n'); 531 if (p) 532 *p = '\0'; 533 for (p = val->string; *p; p++) 534 if (!(isdigit(*p) || isspace(*p))) 535 break; 536 /* The following code extracts the string to match or the value 537 * and sets checkval appropriately 538 */ 539 if (*p) { 540 rv = sscanf(val->string, "%32s", valstr); 541 } else { 542 rv = sscanf(val->string, "%llu", &val->value); 543 checkval = true; 544 } 545 if (!rv) 546 goto out; 547 } 548 549 for (i = 0; tbl[i].string; i++) { 550 /* Check for exact match */ 551 if (checkval) { 552 if (val->value == tbl[i].value) 553 ret = &tbl[i]; 554 } else { 555 if (!strcmp(valstr, "default") && 556 (tbl[i].flags & BOND_VALFLAG_DEFAULT)) 557 ret = &tbl[i]; 558 559 if (!strcmp(valstr, tbl[i].string)) 560 ret = &tbl[i]; 561 } 562 /* Found an exact match */ 563 if (ret) 564 goto out; 565 } 566 /* Possible range match */ 567 if (checkval && bond_opt_check_range(opt, val->value)) 568 ret = val; 569 out: 570 return ret; 571 } 572 573 /* Check opt's dependencies against bond mode and currently set options */ 574 static int bond_opt_check_deps(struct bonding *bond, 575 const struct bond_option *opt) 576 { 577 struct bond_params *params = &bond->params; 578 579 if (test_bit(params->mode, &opt->unsuppmodes)) 580 return -EACCES; 581 if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond)) 582 return -ENOTEMPTY; 583 if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP)) 584 return -EBUSY; 585 586 return 0; 587 } 588 589 static void bond_opt_dep_print(struct bonding *bond, 590 const struct bond_option *opt) 591 { 592 const struct bond_opt_value *modeval; 593 struct bond_params *params; 594 595 params = &bond->params; 596 modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode); 597 if (test_bit(params->mode, &opt->unsuppmodes)) 598 netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n", 599 opt->name, modeval->string, modeval->value); 600 } 601 602 static void bond_opt_error_interpret(struct bonding *bond, 603 const struct bond_option *opt, 604 int error, const struct bond_opt_value *val) 605 { 606 const struct bond_opt_value *minval, *maxval; 607 char *p; 608 609 switch (error) { 610 case -EINVAL: 611 if (val) { 612 if (val->string) { 613 /* sometimes RAWVAL opts may have new lines */ 614 p = strchr(val->string, '\n'); 615 if (p) 616 *p = '\0'; 617 netdev_err(bond->dev, "option %s: invalid value (%s)\n", 618 opt->name, val->string); 619 } else { 620 netdev_err(bond->dev, "option %s: invalid value (%llu)\n", 621 opt->name, val->value); 622 } 623 } 624 minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN); 625 maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX); 626 if (!maxval) 627 break; 628 netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n", 629 opt->name, minval ? minval->value : 0, maxval->value); 630 break; 631 case -EACCES: 632 bond_opt_dep_print(bond, opt); 633 break; 634 case -ENOTEMPTY: 635 netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n", 636 opt->name); 637 break; 638 case -EBUSY: 639 netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n", 640 opt->name); 641 break; 642 default: 643 break; 644 } 645 } 646 647 /** 648 * __bond_opt_set - set a bonding option 649 * @bond: target bond device 650 * @option: option to set 651 * @val: value to set it to 652 * 653 * This function is used to change the bond's option value, it can be 654 * used for both enabling/changing an option and for disabling it. RTNL lock 655 * must be obtained before calling this function. 656 */ 657 int __bond_opt_set(struct bonding *bond, 658 unsigned int option, struct bond_opt_value *val) 659 { 660 const struct bond_opt_value *retval = NULL; 661 const struct bond_option *opt; 662 int ret = -ENOENT; 663 664 ASSERT_RTNL(); 665 666 opt = bond_opt_get(option); 667 if (WARN_ON(!val) || WARN_ON(!opt)) 668 goto out; 669 ret = bond_opt_check_deps(bond, opt); 670 if (ret) 671 goto out; 672 retval = bond_opt_parse(opt, val); 673 if (!retval) { 674 ret = -EINVAL; 675 goto out; 676 } 677 ret = opt->set(bond, retval); 678 out: 679 if (ret) 680 bond_opt_error_interpret(bond, opt, ret, val); 681 682 return ret; 683 } 684 /** 685 * __bond_opt_set_notify - set a bonding option 686 * @bond: target bond device 687 * @option: option to set 688 * @val: value to set it to 689 * 690 * This function is used to change the bond's option value and trigger 691 * a notification to user sapce. It can be used for both enabling/changing 692 * an option and for disabling it. RTNL lock must be obtained before calling 693 * this function. 694 */ 695 int __bond_opt_set_notify(struct bonding *bond, 696 unsigned int option, struct bond_opt_value *val) 697 { 698 int ret = -ENOENT; 699 700 ASSERT_RTNL(); 701 702 ret = __bond_opt_set(bond, option, val); 703 704 if (!ret && (bond->dev->reg_state == NETREG_REGISTERED)) 705 call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev); 706 707 return ret; 708 } 709 710 /** 711 * bond_opt_tryset_rtnl - try to acquire rtnl and call __bond_opt_set 712 * @bond: target bond device 713 * @option: option to set 714 * @buf: value to set it to 715 * 716 * This function tries to acquire RTNL without blocking and if successful 717 * calls __bond_opt_set. It is mainly used for sysfs option manipulation. 718 */ 719 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf) 720 { 721 struct bond_opt_value optval; 722 int ret; 723 724 if (!rtnl_trylock()) 725 return restart_syscall(); 726 bond_opt_initstr(&optval, buf); 727 ret = __bond_opt_set_notify(bond, option, &optval); 728 rtnl_unlock(); 729 730 return ret; 731 } 732 733 /** 734 * bond_opt_get - get a pointer to an option 735 * @option: option for which to return a pointer 736 * 737 * This function checks if option is valid and if so returns a pointer 738 * to its entry in the bond_opts[] option array. 739 */ 740 const struct bond_option *bond_opt_get(unsigned int option) 741 { 742 if (!BOND_OPT_VALID(option)) 743 return NULL; 744 745 return &bond_opts[option]; 746 } 747 748 static int bond_option_mode_set(struct bonding *bond, 749 const struct bond_opt_value *newval) 750 { 751 if (!bond_mode_uses_arp(newval->value)) { 752 if (bond->params.arp_interval) { 753 netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n", 754 newval->string); 755 /* disable arp monitoring */ 756 bond->params.arp_interval = 0; 757 } 758 759 if (!bond->params.miimon) { 760 /* set miimon to default value */ 761 bond->params.miimon = BOND_DEFAULT_MIIMON; 762 netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n", 763 bond->params.miimon); 764 } 765 } 766 767 if (newval->value == BOND_MODE_ALB) 768 bond->params.tlb_dynamic_lb = 1; 769 770 /* don't cache arp_validate between modes */ 771 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; 772 bond->params.mode = newval->value; 773 774 return 0; 775 } 776 777 static int bond_option_active_slave_set(struct bonding *bond, 778 const struct bond_opt_value *newval) 779 { 780 char ifname[IFNAMSIZ] = { 0, }; 781 struct net_device *slave_dev; 782 int ret = 0; 783 784 sscanf(newval->string, "%15s", ifname); /* IFNAMSIZ */ 785 if (!strlen(ifname) || newval->string[0] == '\n') { 786 slave_dev = NULL; 787 } else { 788 slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname); 789 if (!slave_dev) 790 return -ENODEV; 791 } 792 793 if (slave_dev) { 794 if (!netif_is_bond_slave(slave_dev)) { 795 slave_err(bond->dev, slave_dev, "Device is not bonding slave\n"); 796 return -EINVAL; 797 } 798 799 if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { 800 slave_err(bond->dev, slave_dev, "Device is not our slave\n"); 801 return -EINVAL; 802 } 803 } 804 805 block_netpoll_tx(); 806 /* check to see if we are clearing active */ 807 if (!slave_dev) { 808 netdev_dbg(bond->dev, "Clearing current active slave\n"); 809 RCU_INIT_POINTER(bond->curr_active_slave, NULL); 810 bond_select_active_slave(bond); 811 } else { 812 struct slave *old_active = rtnl_dereference(bond->curr_active_slave); 813 struct slave *new_active = bond_slave_get_rtnl(slave_dev); 814 815 BUG_ON(!new_active); 816 817 if (new_active == old_active) { 818 /* do nothing */ 819 slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n"); 820 } else { 821 if (old_active && (new_active->link == BOND_LINK_UP) && 822 bond_slave_is_up(new_active)) { 823 slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n"); 824 bond_change_active_slave(bond, new_active); 825 } else { 826 slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n", 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 (bond->params.peer_notif_delay) 854 netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n", 855 bond->params.peer_notif_delay * bond->params.miimon); 856 if (newval->value && bond->params.arp_interval) { 857 netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n"); 858 bond->params.arp_interval = 0; 859 if (bond->params.arp_validate) 860 bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; 861 } 862 if (bond->dev->flags & IFF_UP) { 863 /* If the interface is up, we may need to fire off 864 * the MII timer. If the interface is down, the 865 * timer will get fired off when the open function 866 * is called. 867 */ 868 if (!newval->value) { 869 cancel_delayed_work_sync(&bond->mii_work); 870 } else { 871 cancel_delayed_work_sync(&bond->arp_work); 872 queue_delayed_work(bond->wq, &bond->mii_work, 0); 873 } 874 } 875 876 return 0; 877 } 878 879 /* Set up, down and peer notification delays. These must be multiples 880 * of the MII monitoring value, and are stored internally as the 881 * multiplier. Thus, we must translate to MS for the real world. 882 */ 883 static int _bond_option_delay_set(struct bonding *bond, 884 const struct bond_opt_value *newval, 885 const char *name, 886 int *target) 887 { 888 int value = newval->value; 889 890 if (!bond->params.miimon) { 891 netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n", 892 name); 893 return -EPERM; 894 } 895 if ((value % bond->params.miimon) != 0) { 896 netdev_warn(bond->dev, 897 "%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n", 898 name, 899 value, bond->params.miimon, 900 (value / bond->params.miimon) * 901 bond->params.miimon); 902 } 903 *target = value / bond->params.miimon; 904 netdev_dbg(bond->dev, "Setting %s to %d\n", 905 name, 906 *target * bond->params.miimon); 907 908 return 0; 909 } 910 911 static int bond_option_updelay_set(struct bonding *bond, 912 const struct bond_opt_value *newval) 913 { 914 return _bond_option_delay_set(bond, newval, "up delay", 915 &bond->params.updelay); 916 } 917 918 static int bond_option_downdelay_set(struct bonding *bond, 919 const struct bond_opt_value *newval) 920 { 921 return _bond_option_delay_set(bond, newval, "down delay", 922 &bond->params.downdelay); 923 } 924 925 static int bond_option_peer_notif_delay_set(struct bonding *bond, 926 const struct bond_opt_value *newval) 927 { 928 int ret = _bond_option_delay_set(bond, newval, 929 "peer notification delay", 930 &bond->params.peer_notif_delay); 931 return ret; 932 } 933 934 static int bond_option_use_carrier_set(struct bonding *bond, 935 const struct bond_opt_value *newval) 936 { 937 netdev_dbg(bond->dev, "Setting use_carrier to %llu\n", 938 newval->value); 939 bond->params.use_carrier = newval->value; 940 941 return 0; 942 } 943 944 /* There are two tricky bits here. First, if ARP monitoring is activated, then 945 * we must disable MII monitoring. Second, if the ARP timer isn't running, 946 * we must start it. 947 */ 948 static int bond_option_arp_interval_set(struct bonding *bond, 949 const struct bond_opt_value *newval) 950 { 951 netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n", 952 newval->value); 953 bond->params.arp_interval = newval->value; 954 if (newval->value) { 955 if (bond->params.miimon) { 956 netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n"); 957 bond->params.miimon = 0; 958 } 959 if (!bond->params.arp_targets[0]) 960 netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n"); 961 } 962 if (bond->dev->flags & IFF_UP) { 963 /* If the interface is up, we may need to fire off 964 * the ARP timer. If the interface is down, the 965 * timer will get fired off when the open function 966 * is called. 967 */ 968 if (!newval->value) { 969 if (bond->params.arp_validate) 970 bond->recv_probe = NULL; 971 cancel_delayed_work_sync(&bond->arp_work); 972 } else { 973 /* arp_validate can be set only in active-backup mode */ 974 bond->recv_probe = bond_arp_rcv; 975 cancel_delayed_work_sync(&bond->mii_work); 976 queue_delayed_work(bond->wq, &bond->arp_work, 0); 977 } 978 } 979 980 return 0; 981 } 982 983 static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, 984 __be32 target, 985 unsigned long last_rx) 986 { 987 __be32 *targets = bond->params.arp_targets; 988 struct list_head *iter; 989 struct slave *slave; 990 991 if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { 992 bond_for_each_slave(bond, slave, iter) 993 slave->target_last_arp_rx[slot] = last_rx; 994 targets[slot] = target; 995 } 996 } 997 998 static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 999 { 1000 __be32 *targets = bond->params.arp_targets; 1001 int ind; 1002 1003 if (!bond_is_ip_target_ok(target)) { 1004 netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n", 1005 &target); 1006 return -EINVAL; 1007 } 1008 1009 if (bond_get_targets_ip(targets, target) != -1) { /* dup */ 1010 netdev_err(bond->dev, "ARP target %pI4 is already present\n", 1011 &target); 1012 return -EINVAL; 1013 } 1014 1015 ind = bond_get_targets_ip(targets, 0); /* first free slot */ 1016 if (ind == -1) { 1017 netdev_err(bond->dev, "ARP target table is full!\n"); 1018 return -EINVAL; 1019 } 1020 1021 netdev_dbg(bond->dev, "Adding ARP target %pI4\n", &target); 1022 1023 _bond_options_arp_ip_target_set(bond, ind, target, jiffies); 1024 1025 return 0; 1026 } 1027 1028 static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) 1029 { 1030 return _bond_option_arp_ip_target_add(bond, target); 1031 } 1032 1033 static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) 1034 { 1035 __be32 *targets = bond->params.arp_targets; 1036 struct list_head *iter; 1037 struct slave *slave; 1038 unsigned long *targets_rx; 1039 int ind, i; 1040 1041 if (!bond_is_ip_target_ok(target)) { 1042 netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n", 1043 &target); 1044 return -EINVAL; 1045 } 1046 1047 ind = bond_get_targets_ip(targets, target); 1048 if (ind == -1) { 1049 netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n", 1050 &target); 1051 return -EINVAL; 1052 } 1053 1054 if (ind == 0 && !targets[1] && bond->params.arp_interval) 1055 netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); 1056 1057 netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target); 1058 1059 bond_for_each_slave(bond, slave, iter) { 1060 targets_rx = slave->target_last_arp_rx; 1061 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1062 targets_rx[i] = targets_rx[i+1]; 1063 targets_rx[i] = 0; 1064 } 1065 for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) 1066 targets[i] = targets[i+1]; 1067 targets[i] = 0; 1068 1069 return 0; 1070 } 1071 1072 void bond_option_arp_ip_targets_clear(struct bonding *bond) 1073 { 1074 int i; 1075 1076 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 1077 _bond_options_arp_ip_target_set(bond, i, 0, 0); 1078 } 1079 1080 static int bond_option_arp_ip_targets_set(struct bonding *bond, 1081 const struct bond_opt_value *newval) 1082 { 1083 int ret = -EPERM; 1084 __be32 target; 1085 1086 if (newval->string) { 1087 if (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { 1088 netdev_err(bond->dev, "invalid ARP target %pI4 specified\n", 1089 &target); 1090 return ret; 1091 } 1092 if (newval->string[0] == '+') 1093 ret = bond_option_arp_ip_target_add(bond, target); 1094 else if (newval->string[0] == '-') 1095 ret = bond_option_arp_ip_target_rem(bond, target); 1096 else 1097 netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n"); 1098 } else { 1099 target = newval->value; 1100 ret = bond_option_arp_ip_target_add(bond, target); 1101 } 1102 1103 return ret; 1104 } 1105 1106 static int bond_option_arp_validate_set(struct bonding *bond, 1107 const struct bond_opt_value *newval) 1108 { 1109 netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n", 1110 newval->string, newval->value); 1111 bond->params.arp_validate = newval->value; 1112 1113 return 0; 1114 } 1115 1116 static int bond_option_arp_all_targets_set(struct bonding *bond, 1117 const struct bond_opt_value *newval) 1118 { 1119 netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n", 1120 newval->string, newval->value); 1121 bond->params.arp_all_targets = newval->value; 1122 1123 return 0; 1124 } 1125 1126 static int bond_option_primary_set(struct bonding *bond, 1127 const struct bond_opt_value *newval) 1128 { 1129 char *p, *primary = newval->string; 1130 struct list_head *iter; 1131 struct slave *slave; 1132 1133 block_netpoll_tx(); 1134 1135 p = strchr(primary, '\n'); 1136 if (p) 1137 *p = '\0'; 1138 /* check to see if we are clearing primary */ 1139 if (!strlen(primary)) { 1140 netdev_dbg(bond->dev, "Setting primary slave to None\n"); 1141 RCU_INIT_POINTER(bond->primary_slave, NULL); 1142 memset(bond->params.primary, 0, sizeof(bond->params.primary)); 1143 bond_select_active_slave(bond); 1144 goto out; 1145 } 1146 1147 bond_for_each_slave(bond, slave, iter) { 1148 if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0) { 1149 slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n"); 1150 rcu_assign_pointer(bond->primary_slave, slave); 1151 strcpy(bond->params.primary, slave->dev->name); 1152 bond->force_primary = true; 1153 bond_select_active_slave(bond); 1154 goto out; 1155 } 1156 } 1157 1158 if (rtnl_dereference(bond->primary_slave)) { 1159 netdev_dbg(bond->dev, "Setting primary slave to None\n"); 1160 RCU_INIT_POINTER(bond->primary_slave, NULL); 1161 bond_select_active_slave(bond); 1162 } 1163 strncpy(bond->params.primary, primary, IFNAMSIZ); 1164 bond->params.primary[IFNAMSIZ - 1] = 0; 1165 1166 netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n", 1167 primary); 1168 1169 out: 1170 unblock_netpoll_tx(); 1171 1172 return 0; 1173 } 1174 1175 static int bond_option_primary_reselect_set(struct bonding *bond, 1176 const struct bond_opt_value *newval) 1177 { 1178 netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n", 1179 newval->string, newval->value); 1180 bond->params.primary_reselect = newval->value; 1181 1182 block_netpoll_tx(); 1183 bond_select_active_slave(bond); 1184 unblock_netpoll_tx(); 1185 1186 return 0; 1187 } 1188 1189 static int bond_option_fail_over_mac_set(struct bonding *bond, 1190 const struct bond_opt_value *newval) 1191 { 1192 netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n", 1193 newval->string, newval->value); 1194 bond->params.fail_over_mac = newval->value; 1195 1196 return 0; 1197 } 1198 1199 static int bond_option_xmit_hash_policy_set(struct bonding *bond, 1200 const struct bond_opt_value *newval) 1201 { 1202 netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n", 1203 newval->string, newval->value); 1204 bond->params.xmit_policy = newval->value; 1205 1206 return 0; 1207 } 1208 1209 static int bond_option_resend_igmp_set(struct bonding *bond, 1210 const struct bond_opt_value *newval) 1211 { 1212 netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n", 1213 newval->value); 1214 bond->params.resend_igmp = newval->value; 1215 1216 return 0; 1217 } 1218 1219 static int bond_option_num_peer_notif_set(struct bonding *bond, 1220 const struct bond_opt_value *newval) 1221 { 1222 bond->params.num_peer_notif = newval->value; 1223 1224 return 0; 1225 } 1226 1227 static int bond_option_all_slaves_active_set(struct bonding *bond, 1228 const struct bond_opt_value *newval) 1229 { 1230 struct list_head *iter; 1231 struct slave *slave; 1232 1233 if (newval->value == bond->params.all_slaves_active) 1234 return 0; 1235 bond->params.all_slaves_active = newval->value; 1236 bond_for_each_slave(bond, slave, iter) { 1237 if (!bond_is_active_slave(slave)) { 1238 if (newval->value) 1239 slave->inactive = 0; 1240 else 1241 slave->inactive = 1; 1242 } 1243 } 1244 1245 return 0; 1246 } 1247 1248 static int bond_option_min_links_set(struct bonding *bond, 1249 const struct bond_opt_value *newval) 1250 { 1251 netdev_dbg(bond->dev, "Setting min links value to %llu\n", 1252 newval->value); 1253 bond->params.min_links = newval->value; 1254 bond_set_carrier(bond); 1255 1256 return 0; 1257 } 1258 1259 static int bond_option_lp_interval_set(struct bonding *bond, 1260 const struct bond_opt_value *newval) 1261 { 1262 bond->params.lp_interval = newval->value; 1263 1264 return 0; 1265 } 1266 1267 static int bond_option_pps_set(struct bonding *bond, 1268 const struct bond_opt_value *newval) 1269 { 1270 netdev_dbg(bond->dev, "Setting packets per slave to %llu\n", 1271 newval->value); 1272 bond->params.packets_per_slave = newval->value; 1273 if (newval->value > 0) { 1274 bond->params.reciprocal_packets_per_slave = 1275 reciprocal_value(newval->value); 1276 } else { 1277 /* reciprocal_packets_per_slave is unused if 1278 * packets_per_slave is 0 or 1, just initialize it 1279 */ 1280 bond->params.reciprocal_packets_per_slave = 1281 (struct reciprocal_value) { 0 }; 1282 } 1283 1284 return 0; 1285 } 1286 1287 static int bond_option_lacp_rate_set(struct bonding *bond, 1288 const struct bond_opt_value *newval) 1289 { 1290 netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n", 1291 newval->string, newval->value); 1292 bond->params.lacp_fast = newval->value; 1293 bond_3ad_update_lacp_rate(bond); 1294 1295 return 0; 1296 } 1297 1298 static int bond_option_ad_select_set(struct bonding *bond, 1299 const struct bond_opt_value *newval) 1300 { 1301 netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n", 1302 newval->string, newval->value); 1303 bond->params.ad_select = newval->value; 1304 1305 return 0; 1306 } 1307 1308 static int bond_option_queue_id_set(struct bonding *bond, 1309 const struct bond_opt_value *newval) 1310 { 1311 struct slave *slave, *update_slave; 1312 struct net_device *sdev; 1313 struct list_head *iter; 1314 char *delim; 1315 int ret = 0; 1316 u16 qid; 1317 1318 /* delim will point to queue id if successful */ 1319 delim = strchr(newval->string, ':'); 1320 if (!delim) 1321 goto err_no_cmd; 1322 1323 /* Terminate string that points to device name and bump it 1324 * up one, so we can read the queue id there. 1325 */ 1326 *delim = '\0'; 1327 if (sscanf(++delim, "%hd\n", &qid) != 1) 1328 goto err_no_cmd; 1329 1330 /* Check buffer length, valid ifname and queue id */ 1331 if (!dev_valid_name(newval->string) || 1332 qid > bond->dev->real_num_tx_queues) 1333 goto err_no_cmd; 1334 1335 /* Get the pointer to that interface if it exists */ 1336 sdev = __dev_get_by_name(dev_net(bond->dev), newval->string); 1337 if (!sdev) 1338 goto err_no_cmd; 1339 1340 /* Search for thes slave and check for duplicate qids */ 1341 update_slave = NULL; 1342 bond_for_each_slave(bond, slave, iter) { 1343 if (sdev == slave->dev) 1344 /* We don't need to check the matching 1345 * slave for dups, since we're overwriting it 1346 */ 1347 update_slave = slave; 1348 else if (qid && qid == slave->queue_id) { 1349 goto err_no_cmd; 1350 } 1351 } 1352 1353 if (!update_slave) 1354 goto err_no_cmd; 1355 1356 /* Actually set the qids for the slave */ 1357 update_slave->queue_id = qid; 1358 1359 out: 1360 return ret; 1361 1362 err_no_cmd: 1363 netdev_dbg(bond->dev, "invalid input for queue_id set\n"); 1364 ret = -EPERM; 1365 goto out; 1366 1367 } 1368 1369 static int bond_option_slaves_set(struct bonding *bond, 1370 const struct bond_opt_value *newval) 1371 { 1372 char command[IFNAMSIZ + 1] = { 0, }; 1373 struct net_device *dev; 1374 char *ifname; 1375 int ret; 1376 1377 sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ 1378 ifname = command + 1; 1379 if ((strlen(command) <= 1) || 1380 (command[0] != '+' && command[0] != '-') || 1381 !dev_valid_name(ifname)) 1382 goto err_no_cmd; 1383 1384 dev = __dev_get_by_name(dev_net(bond->dev), ifname); 1385 if (!dev) { 1386 netdev_dbg(bond->dev, "interface %s does not exist!\n", 1387 ifname); 1388 ret = -ENODEV; 1389 goto out; 1390 } 1391 1392 switch (command[0]) { 1393 case '+': 1394 slave_dbg(bond->dev, dev, "Enslaving interface\n"); 1395 ret = bond_enslave(bond->dev, dev, NULL); 1396 break; 1397 1398 case '-': 1399 slave_dbg(bond->dev, dev, "Releasing interface\n"); 1400 ret = bond_release(bond->dev, dev); 1401 break; 1402 1403 default: 1404 /* should not run here. */ 1405 goto err_no_cmd; 1406 } 1407 1408 out: 1409 return ret; 1410 1411 err_no_cmd: 1412 netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n"); 1413 ret = -EPERM; 1414 goto out; 1415 } 1416 1417 static int bond_option_tlb_dynamic_lb_set(struct bonding *bond, 1418 const struct bond_opt_value *newval) 1419 { 1420 netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n", 1421 newval->string, newval->value); 1422 bond->params.tlb_dynamic_lb = newval->value; 1423 1424 return 0; 1425 } 1426 1427 static int bond_option_ad_actor_sys_prio_set(struct bonding *bond, 1428 const struct bond_opt_value *newval) 1429 { 1430 netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n", 1431 newval->value); 1432 1433 bond->params.ad_actor_sys_prio = newval->value; 1434 bond_3ad_update_ad_actor_settings(bond); 1435 1436 return 0; 1437 } 1438 1439 static int bond_option_ad_actor_system_set(struct bonding *bond, 1440 const struct bond_opt_value *newval) 1441 { 1442 u8 macaddr[ETH_ALEN]; 1443 u8 *mac; 1444 1445 if (newval->string) { 1446 if (!mac_pton(newval->string, macaddr)) 1447 goto err; 1448 mac = macaddr; 1449 } else { 1450 mac = (u8 *)&newval->value; 1451 } 1452 1453 if (!is_valid_ether_addr(mac)) 1454 goto err; 1455 1456 netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n", mac); 1457 ether_addr_copy(bond->params.ad_actor_system, mac); 1458 bond_3ad_update_ad_actor_settings(bond); 1459 1460 return 0; 1461 1462 err: 1463 netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n"); 1464 return -EINVAL; 1465 } 1466 1467 static int bond_option_ad_user_port_key_set(struct bonding *bond, 1468 const struct bond_opt_value *newval) 1469 { 1470 netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n", 1471 newval->value); 1472 1473 bond->params.ad_user_port_key = newval->value; 1474 return 0; 1475 } 1476