| 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 | } |