Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. |
| 4 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> |
| 5 | */ |
| 6 | |
| 7 | #include "devl_internal.h" |
| 8 | |
Jiri Pirko | d0b7e99 | 2023-09-13 09:12:32 +0200 | [diff] [blame] | 9 | struct devlink_linecard { |
| 10 | struct list_head list; |
| 11 | struct devlink *devlink; |
| 12 | unsigned int index; |
| 13 | const struct devlink_linecard_ops *ops; |
| 14 | void *priv; |
| 15 | enum devlink_linecard_state state; |
| 16 | struct mutex state_lock; /* Protects state */ |
| 17 | const char *type; |
| 18 | struct devlink_linecard_type *types; |
| 19 | unsigned int types_count; |
Jiri Pirko | 9473bc0 | 2023-09-13 09:12:41 +0200 | [diff] [blame] | 20 | u32 rel_index; |
Jiri Pirko | d0b7e99 | 2023-09-13 09:12:32 +0200 | [diff] [blame] | 21 | }; |
| 22 | |
| 23 | unsigned int devlink_linecard_index(struct devlink_linecard *linecard) |
| 24 | { |
| 25 | return linecard->index; |
| 26 | } |
| 27 | |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 28 | static struct devlink_linecard * |
| 29 | devlink_linecard_get_by_index(struct devlink *devlink, |
| 30 | unsigned int linecard_index) |
| 31 | { |
| 32 | struct devlink_linecard *devlink_linecard; |
| 33 | |
| 34 | list_for_each_entry(devlink_linecard, &devlink->linecard_list, list) { |
| 35 | if (devlink_linecard->index == linecard_index) |
| 36 | return devlink_linecard; |
| 37 | } |
| 38 | return NULL; |
| 39 | } |
| 40 | |
| 41 | static bool devlink_linecard_index_exists(struct devlink *devlink, |
| 42 | unsigned int linecard_index) |
| 43 | { |
| 44 | return devlink_linecard_get_by_index(devlink, linecard_index); |
| 45 | } |
| 46 | |
| 47 | static struct devlink_linecard * |
| 48 | devlink_linecard_get_from_attrs(struct devlink *devlink, struct nlattr **attrs) |
| 49 | { |
| 50 | if (attrs[DEVLINK_ATTR_LINECARD_INDEX]) { |
| 51 | u32 linecard_index = nla_get_u32(attrs[DEVLINK_ATTR_LINECARD_INDEX]); |
| 52 | struct devlink_linecard *linecard; |
| 53 | |
| 54 | linecard = devlink_linecard_get_by_index(devlink, linecard_index); |
| 55 | if (!linecard) |
| 56 | return ERR_PTR(-ENODEV); |
| 57 | return linecard; |
| 58 | } |
| 59 | return ERR_PTR(-EINVAL); |
| 60 | } |
| 61 | |
| 62 | static struct devlink_linecard * |
| 63 | devlink_linecard_get_from_info(struct devlink *devlink, struct genl_info *info) |
| 64 | { |
| 65 | return devlink_linecard_get_from_attrs(devlink, info->attrs); |
| 66 | } |
| 67 | |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 68 | struct devlink_linecard_type { |
| 69 | const char *type; |
| 70 | const void *priv; |
| 71 | }; |
| 72 | |
| 73 | static int devlink_nl_linecard_fill(struct sk_buff *msg, |
| 74 | struct devlink *devlink, |
| 75 | struct devlink_linecard *linecard, |
| 76 | enum devlink_command cmd, u32 portid, |
| 77 | u32 seq, int flags, |
| 78 | struct netlink_ext_ack *extack) |
| 79 | { |
| 80 | struct devlink_linecard_type *linecard_type; |
| 81 | struct nlattr *attr; |
| 82 | void *hdr; |
| 83 | int i; |
| 84 | |
| 85 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); |
| 86 | if (!hdr) |
| 87 | return -EMSGSIZE; |
| 88 | |
| 89 | if (devlink_nl_put_handle(msg, devlink)) |
| 90 | goto nla_put_failure; |
| 91 | if (nla_put_u32(msg, DEVLINK_ATTR_LINECARD_INDEX, linecard->index)) |
| 92 | goto nla_put_failure; |
| 93 | if (nla_put_u8(msg, DEVLINK_ATTR_LINECARD_STATE, linecard->state)) |
| 94 | goto nla_put_failure; |
| 95 | if (linecard->type && |
| 96 | nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, linecard->type)) |
| 97 | goto nla_put_failure; |
| 98 | |
| 99 | if (linecard->types_count) { |
| 100 | attr = nla_nest_start(msg, |
| 101 | DEVLINK_ATTR_LINECARD_SUPPORTED_TYPES); |
| 102 | if (!attr) |
| 103 | goto nla_put_failure; |
| 104 | for (i = 0; i < linecard->types_count; i++) { |
| 105 | linecard_type = &linecard->types[i]; |
| 106 | if (nla_put_string(msg, DEVLINK_ATTR_LINECARD_TYPE, |
| 107 | linecard_type->type)) { |
| 108 | nla_nest_cancel(msg, attr); |
| 109 | goto nla_put_failure; |
| 110 | } |
| 111 | } |
| 112 | nla_nest_end(msg, attr); |
| 113 | } |
| 114 | |
Jiri Pirko | 9473bc0 | 2023-09-13 09:12:41 +0200 | [diff] [blame] | 115 | if (devlink_rel_devlink_handle_put(msg, devlink, |
| 116 | linecard->rel_index, |
| 117 | DEVLINK_ATTR_NESTED_DEVLINK, |
| 118 | NULL)) |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 119 | goto nla_put_failure; |
| 120 | |
| 121 | genlmsg_end(msg, hdr); |
| 122 | return 0; |
| 123 | |
| 124 | nla_put_failure: |
| 125 | genlmsg_cancel(msg, hdr); |
| 126 | return -EMSGSIZE; |
| 127 | } |
| 128 | |
| 129 | static void devlink_linecard_notify(struct devlink_linecard *linecard, |
| 130 | enum devlink_command cmd) |
| 131 | { |
| 132 | struct devlink *devlink = linecard->devlink; |
| 133 | struct sk_buff *msg; |
| 134 | int err; |
| 135 | |
| 136 | WARN_ON(cmd != DEVLINK_CMD_LINECARD_NEW && |
| 137 | cmd != DEVLINK_CMD_LINECARD_DEL); |
| 138 | |
Jiri Pirko | cddbff4 | 2023-12-16 13:29:55 +0100 | [diff] [blame] | 139 | if (!__devl_is_registered(devlink) || !devlink_nl_notify_need(devlink)) |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 140 | return; |
| 141 | |
| 142 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 143 | if (!msg) |
| 144 | return; |
| 145 | |
| 146 | err = devlink_nl_linecard_fill(msg, devlink, linecard, cmd, 0, 0, 0, |
| 147 | NULL); |
| 148 | if (err) { |
| 149 | nlmsg_free(msg); |
| 150 | return; |
| 151 | } |
| 152 | |
Jiri Pirko | 5648de0b | 2023-12-16 13:29:56 +0100 | [diff] [blame] | 153 | devlink_nl_notify_send(devlink, msg); |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | void devlink_linecards_notify_register(struct devlink *devlink) |
| 157 | { |
| 158 | struct devlink_linecard *linecard; |
| 159 | |
| 160 | list_for_each_entry(linecard, &devlink->linecard_list, list) |
| 161 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 162 | } |
| 163 | |
| 164 | void devlink_linecards_notify_unregister(struct devlink *devlink) |
| 165 | { |
| 166 | struct devlink_linecard *linecard; |
| 167 | |
| 168 | list_for_each_entry_reverse(linecard, &devlink->linecard_list, list) |
| 169 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL); |
| 170 | } |
| 171 | |
| 172 | int devlink_nl_linecard_get_doit(struct sk_buff *skb, struct genl_info *info) |
| 173 | { |
| 174 | struct devlink *devlink = info->user_ptr[0]; |
| 175 | struct devlink_linecard *linecard; |
| 176 | struct sk_buff *msg; |
| 177 | int err; |
| 178 | |
| 179 | linecard = devlink_linecard_get_from_info(devlink, info); |
| 180 | if (IS_ERR(linecard)) |
| 181 | return PTR_ERR(linecard); |
| 182 | |
| 183 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| 184 | if (!msg) |
| 185 | return -ENOMEM; |
| 186 | |
| 187 | mutex_lock(&linecard->state_lock); |
| 188 | err = devlink_nl_linecard_fill(msg, devlink, linecard, |
| 189 | DEVLINK_CMD_LINECARD_NEW, |
| 190 | info->snd_portid, info->snd_seq, 0, |
| 191 | info->extack); |
| 192 | mutex_unlock(&linecard->state_lock); |
| 193 | if (err) { |
| 194 | nlmsg_free(msg); |
| 195 | return err; |
| 196 | } |
| 197 | |
| 198 | return genlmsg_reply(msg, info); |
| 199 | } |
| 200 | |
| 201 | static int devlink_nl_linecard_get_dump_one(struct sk_buff *msg, |
| 202 | struct devlink *devlink, |
| 203 | struct netlink_callback *cb, |
| 204 | int flags) |
| 205 | { |
| 206 | struct devlink_nl_dump_state *state = devlink_dump_state(cb); |
| 207 | struct devlink_linecard *linecard; |
| 208 | int idx = 0; |
| 209 | int err = 0; |
| 210 | |
| 211 | list_for_each_entry(linecard, &devlink->linecard_list, list) { |
| 212 | if (idx < state->idx) { |
| 213 | idx++; |
| 214 | continue; |
| 215 | } |
| 216 | mutex_lock(&linecard->state_lock); |
| 217 | err = devlink_nl_linecard_fill(msg, devlink, linecard, |
| 218 | DEVLINK_CMD_LINECARD_NEW, |
| 219 | NETLINK_CB(cb->skb).portid, |
| 220 | cb->nlh->nlmsg_seq, flags, |
| 221 | cb->extack); |
| 222 | mutex_unlock(&linecard->state_lock); |
| 223 | if (err) { |
| 224 | state->idx = idx; |
| 225 | break; |
| 226 | } |
| 227 | idx++; |
| 228 | } |
| 229 | |
| 230 | return err; |
| 231 | } |
| 232 | |
| 233 | int devlink_nl_linecard_get_dumpit(struct sk_buff *skb, |
| 234 | struct netlink_callback *cb) |
| 235 | { |
| 236 | return devlink_nl_dumpit(skb, cb, devlink_nl_linecard_get_dump_one); |
| 237 | } |
| 238 | |
| 239 | static struct devlink_linecard_type * |
| 240 | devlink_linecard_type_lookup(struct devlink_linecard *linecard, |
| 241 | const char *type) |
| 242 | { |
| 243 | struct devlink_linecard_type *linecard_type; |
| 244 | int i; |
| 245 | |
| 246 | for (i = 0; i < linecard->types_count; i++) { |
| 247 | linecard_type = &linecard->types[i]; |
| 248 | if (!strcmp(type, linecard_type->type)) |
| 249 | return linecard_type; |
| 250 | } |
| 251 | return NULL; |
| 252 | } |
| 253 | |
| 254 | static int devlink_linecard_type_set(struct devlink_linecard *linecard, |
| 255 | const char *type, |
| 256 | struct netlink_ext_ack *extack) |
| 257 | { |
| 258 | const struct devlink_linecard_ops *ops = linecard->ops; |
| 259 | struct devlink_linecard_type *linecard_type; |
| 260 | int err; |
| 261 | |
| 262 | mutex_lock(&linecard->state_lock); |
| 263 | if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) { |
| 264 | NL_SET_ERR_MSG(extack, "Line card is currently being provisioned"); |
| 265 | err = -EBUSY; |
| 266 | goto out; |
| 267 | } |
| 268 | if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) { |
| 269 | NL_SET_ERR_MSG(extack, "Line card is currently being unprovisioned"); |
| 270 | err = -EBUSY; |
| 271 | goto out; |
| 272 | } |
| 273 | |
| 274 | linecard_type = devlink_linecard_type_lookup(linecard, type); |
| 275 | if (!linecard_type) { |
| 276 | NL_SET_ERR_MSG(extack, "Unsupported line card type provided"); |
| 277 | err = -EINVAL; |
| 278 | goto out; |
| 279 | } |
| 280 | |
| 281 | if (linecard->state != DEVLINK_LINECARD_STATE_UNPROVISIONED && |
| 282 | linecard->state != DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) { |
| 283 | NL_SET_ERR_MSG(extack, "Line card already provisioned"); |
| 284 | err = -EBUSY; |
| 285 | /* Check if the line card is provisioned in the same |
| 286 | * way the user asks. In case it is, make the operation |
| 287 | * to return success. |
| 288 | */ |
| 289 | if (ops->same_provision && |
| 290 | ops->same_provision(linecard, linecard->priv, |
| 291 | linecard_type->type, |
| 292 | linecard_type->priv)) |
| 293 | err = 0; |
| 294 | goto out; |
| 295 | } |
| 296 | |
| 297 | linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING; |
| 298 | linecard->type = linecard_type->type; |
| 299 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 300 | mutex_unlock(&linecard->state_lock); |
| 301 | err = ops->provision(linecard, linecard->priv, linecard_type->type, |
| 302 | linecard_type->priv, extack); |
| 303 | if (err) { |
| 304 | /* Provisioning failed. Assume the linecard is unprovisioned |
| 305 | * for future operations. |
| 306 | */ |
| 307 | mutex_lock(&linecard->state_lock); |
| 308 | linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| 309 | linecard->type = NULL; |
| 310 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 311 | mutex_unlock(&linecard->state_lock); |
| 312 | } |
| 313 | return err; |
| 314 | |
| 315 | out: |
| 316 | mutex_unlock(&linecard->state_lock); |
| 317 | return err; |
| 318 | } |
| 319 | |
| 320 | static int devlink_linecard_type_unset(struct devlink_linecard *linecard, |
| 321 | struct netlink_ext_ack *extack) |
| 322 | { |
| 323 | int err; |
| 324 | |
| 325 | mutex_lock(&linecard->state_lock); |
| 326 | if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING) { |
| 327 | NL_SET_ERR_MSG(extack, "Line card is currently being provisioned"); |
| 328 | err = -EBUSY; |
| 329 | goto out; |
| 330 | } |
| 331 | if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONING) { |
| 332 | NL_SET_ERR_MSG(extack, "Line card is currently being unprovisioned"); |
| 333 | err = -EBUSY; |
| 334 | goto out; |
| 335 | } |
| 336 | if (linecard->state == DEVLINK_LINECARD_STATE_PROVISIONING_FAILED) { |
| 337 | linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| 338 | linecard->type = NULL; |
| 339 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 340 | err = 0; |
| 341 | goto out; |
| 342 | } |
| 343 | |
| 344 | if (linecard->state == DEVLINK_LINECARD_STATE_UNPROVISIONED) { |
| 345 | NL_SET_ERR_MSG(extack, "Line card is not provisioned"); |
| 346 | err = 0; |
| 347 | goto out; |
| 348 | } |
| 349 | linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONING; |
| 350 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 351 | mutex_unlock(&linecard->state_lock); |
| 352 | err = linecard->ops->unprovision(linecard, linecard->priv, |
| 353 | extack); |
| 354 | if (err) { |
| 355 | /* Unprovisioning failed. Assume the linecard is unprovisioned |
| 356 | * for future operations. |
| 357 | */ |
| 358 | mutex_lock(&linecard->state_lock); |
| 359 | linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| 360 | linecard->type = NULL; |
| 361 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 362 | mutex_unlock(&linecard->state_lock); |
| 363 | } |
| 364 | return err; |
| 365 | |
| 366 | out: |
| 367 | mutex_unlock(&linecard->state_lock); |
| 368 | return err; |
| 369 | } |
| 370 | |
Jiri Pirko | 5359093 | 2023-10-21 13:27:08 +0200 | [diff] [blame] | 371 | int devlink_nl_linecard_set_doit(struct sk_buff *skb, struct genl_info *info) |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 372 | { |
| 373 | struct netlink_ext_ack *extack = info->extack; |
| 374 | struct devlink *devlink = info->user_ptr[0]; |
| 375 | struct devlink_linecard *linecard; |
| 376 | int err; |
| 377 | |
| 378 | linecard = devlink_linecard_get_from_info(devlink, info); |
| 379 | if (IS_ERR(linecard)) |
| 380 | return PTR_ERR(linecard); |
| 381 | |
| 382 | if (info->attrs[DEVLINK_ATTR_LINECARD_TYPE]) { |
| 383 | const char *type; |
| 384 | |
| 385 | type = nla_data(info->attrs[DEVLINK_ATTR_LINECARD_TYPE]); |
| 386 | if (strcmp(type, "")) { |
| 387 | err = devlink_linecard_type_set(linecard, type, extack); |
| 388 | if (err) |
| 389 | return err; |
| 390 | } else { |
| 391 | err = devlink_linecard_type_unset(linecard, extack); |
| 392 | if (err) |
| 393 | return err; |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | static int devlink_linecard_types_init(struct devlink_linecard *linecard) |
| 401 | { |
| 402 | struct devlink_linecard_type *linecard_type; |
| 403 | unsigned int count; |
| 404 | int i; |
| 405 | |
| 406 | count = linecard->ops->types_count(linecard, linecard->priv); |
| 407 | linecard->types = kmalloc_array(count, sizeof(*linecard_type), |
| 408 | GFP_KERNEL); |
| 409 | if (!linecard->types) |
| 410 | return -ENOMEM; |
| 411 | linecard->types_count = count; |
| 412 | |
| 413 | for (i = 0; i < count; i++) { |
| 414 | linecard_type = &linecard->types[i]; |
| 415 | linecard->ops->types_get(linecard, linecard->priv, i, |
| 416 | &linecard_type->type, |
| 417 | &linecard_type->priv); |
| 418 | } |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | static void devlink_linecard_types_fini(struct devlink_linecard *linecard) |
| 423 | { |
| 424 | kfree(linecard->types); |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * devl_linecard_create - Create devlink linecard |
| 429 | * |
| 430 | * @devlink: devlink |
| 431 | * @linecard_index: driver-specific numerical identifier of the linecard |
| 432 | * @ops: linecards ops |
| 433 | * @priv: user priv pointer |
| 434 | * |
| 435 | * Create devlink linecard instance with provided linecard index. |
| 436 | * Caller can use any indexing, even hw-related one. |
| 437 | * |
| 438 | * Return: Line card structure or an ERR_PTR() encoded error code. |
| 439 | */ |
| 440 | struct devlink_linecard * |
| 441 | devl_linecard_create(struct devlink *devlink, unsigned int linecard_index, |
| 442 | const struct devlink_linecard_ops *ops, void *priv) |
| 443 | { |
| 444 | struct devlink_linecard *linecard; |
| 445 | int err; |
| 446 | |
| 447 | if (WARN_ON(!ops || !ops->provision || !ops->unprovision || |
| 448 | !ops->types_count || !ops->types_get)) |
| 449 | return ERR_PTR(-EINVAL); |
| 450 | |
| 451 | if (devlink_linecard_index_exists(devlink, linecard_index)) |
| 452 | return ERR_PTR(-EEXIST); |
| 453 | |
| 454 | linecard = kzalloc(sizeof(*linecard), GFP_KERNEL); |
| 455 | if (!linecard) |
| 456 | return ERR_PTR(-ENOMEM); |
| 457 | |
| 458 | linecard->devlink = devlink; |
| 459 | linecard->index = linecard_index; |
| 460 | linecard->ops = ops; |
| 461 | linecard->priv = priv; |
| 462 | linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| 463 | mutex_init(&linecard->state_lock); |
| 464 | |
| 465 | err = devlink_linecard_types_init(linecard); |
| 466 | if (err) { |
| 467 | mutex_destroy(&linecard->state_lock); |
| 468 | kfree(linecard); |
| 469 | return ERR_PTR(err); |
| 470 | } |
| 471 | |
| 472 | list_add_tail(&linecard->list, &devlink->linecard_list); |
| 473 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 474 | return linecard; |
| 475 | } |
| 476 | EXPORT_SYMBOL_GPL(devl_linecard_create); |
| 477 | |
| 478 | /** |
| 479 | * devl_linecard_destroy - Destroy devlink linecard |
| 480 | * |
| 481 | * @linecard: devlink linecard |
| 482 | */ |
| 483 | void devl_linecard_destroy(struct devlink_linecard *linecard) |
| 484 | { |
| 485 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_DEL); |
| 486 | list_del(&linecard->list); |
| 487 | devlink_linecard_types_fini(linecard); |
| 488 | mutex_destroy(&linecard->state_lock); |
| 489 | kfree(linecard); |
| 490 | } |
| 491 | EXPORT_SYMBOL_GPL(devl_linecard_destroy); |
| 492 | |
| 493 | /** |
| 494 | * devlink_linecard_provision_set - Set provisioning on linecard |
| 495 | * |
| 496 | * @linecard: devlink linecard |
| 497 | * @type: linecard type |
| 498 | * |
| 499 | * This is either called directly from the provision() op call or |
| 500 | * as a result of the provision() op call asynchronously. |
| 501 | */ |
| 502 | void devlink_linecard_provision_set(struct devlink_linecard *linecard, |
| 503 | const char *type) |
| 504 | { |
| 505 | mutex_lock(&linecard->state_lock); |
| 506 | WARN_ON(linecard->type && strcmp(linecard->type, type)); |
| 507 | linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED; |
| 508 | linecard->type = type; |
| 509 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 510 | mutex_unlock(&linecard->state_lock); |
| 511 | } |
| 512 | EXPORT_SYMBOL_GPL(devlink_linecard_provision_set); |
| 513 | |
| 514 | /** |
| 515 | * devlink_linecard_provision_clear - Clear provisioning on linecard |
| 516 | * |
| 517 | * @linecard: devlink linecard |
| 518 | * |
| 519 | * This is either called directly from the unprovision() op call or |
| 520 | * as a result of the unprovision() op call asynchronously. |
| 521 | */ |
| 522 | void devlink_linecard_provision_clear(struct devlink_linecard *linecard) |
| 523 | { |
| 524 | mutex_lock(&linecard->state_lock); |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 525 | linecard->state = DEVLINK_LINECARD_STATE_UNPROVISIONED; |
| 526 | linecard->type = NULL; |
| 527 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 528 | mutex_unlock(&linecard->state_lock); |
| 529 | } |
| 530 | EXPORT_SYMBOL_GPL(devlink_linecard_provision_clear); |
| 531 | |
| 532 | /** |
| 533 | * devlink_linecard_provision_fail - Fail provisioning on linecard |
| 534 | * |
| 535 | * @linecard: devlink linecard |
| 536 | * |
| 537 | * This is either called directly from the provision() op call or |
| 538 | * as a result of the provision() op call asynchronously. |
| 539 | */ |
| 540 | void devlink_linecard_provision_fail(struct devlink_linecard *linecard) |
| 541 | { |
| 542 | mutex_lock(&linecard->state_lock); |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 543 | linecard->state = DEVLINK_LINECARD_STATE_PROVISIONING_FAILED; |
| 544 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 545 | mutex_unlock(&linecard->state_lock); |
| 546 | } |
| 547 | EXPORT_SYMBOL_GPL(devlink_linecard_provision_fail); |
| 548 | |
| 549 | /** |
| 550 | * devlink_linecard_activate - Set linecard active |
| 551 | * |
| 552 | * @linecard: devlink linecard |
| 553 | */ |
| 554 | void devlink_linecard_activate(struct devlink_linecard *linecard) |
| 555 | { |
| 556 | mutex_lock(&linecard->state_lock); |
| 557 | WARN_ON(linecard->state != DEVLINK_LINECARD_STATE_PROVISIONED); |
| 558 | linecard->state = DEVLINK_LINECARD_STATE_ACTIVE; |
| 559 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 560 | mutex_unlock(&linecard->state_lock); |
| 561 | } |
| 562 | EXPORT_SYMBOL_GPL(devlink_linecard_activate); |
| 563 | |
| 564 | /** |
| 565 | * devlink_linecard_deactivate - Set linecard inactive |
| 566 | * |
| 567 | * @linecard: devlink linecard |
| 568 | */ |
| 569 | void devlink_linecard_deactivate(struct devlink_linecard *linecard) |
| 570 | { |
| 571 | mutex_lock(&linecard->state_lock); |
| 572 | switch (linecard->state) { |
| 573 | case DEVLINK_LINECARD_STATE_ACTIVE: |
| 574 | linecard->state = DEVLINK_LINECARD_STATE_PROVISIONED; |
| 575 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 576 | break; |
| 577 | case DEVLINK_LINECARD_STATE_UNPROVISIONING: |
| 578 | /* Line card is being deactivated as part |
| 579 | * of unprovisioning flow. |
| 580 | */ |
| 581 | break; |
| 582 | default: |
| 583 | WARN_ON(1); |
| 584 | break; |
| 585 | } |
| 586 | mutex_unlock(&linecard->state_lock); |
| 587 | } |
| 588 | EXPORT_SYMBOL_GPL(devlink_linecard_deactivate); |
| 589 | |
Jiri Pirko | 9473bc0 | 2023-09-13 09:12:41 +0200 | [diff] [blame] | 590 | static void devlink_linecard_rel_notify_cb(struct devlink *devlink, |
| 591 | u32 linecard_index) |
| 592 | { |
| 593 | struct devlink_linecard *linecard; |
| 594 | |
| 595 | linecard = devlink_linecard_get_by_index(devlink, linecard_index); |
| 596 | if (!linecard) |
| 597 | return; |
| 598 | devlink_linecard_notify(linecard, DEVLINK_CMD_LINECARD_NEW); |
| 599 | } |
| 600 | |
| 601 | static void devlink_linecard_rel_cleanup_cb(struct devlink *devlink, |
| 602 | u32 linecard_index, u32 rel_index) |
| 603 | { |
| 604 | struct devlink_linecard *linecard; |
| 605 | |
| 606 | linecard = devlink_linecard_get_by_index(devlink, linecard_index); |
| 607 | if (linecard && linecard->rel_index == rel_index) |
| 608 | linecard->rel_index = 0; |
| 609 | } |
| 610 | |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 611 | /** |
| 612 | * devlink_linecard_nested_dl_set - Attach/detach nested devlink |
| 613 | * instance to linecard. |
| 614 | * |
| 615 | * @linecard: devlink linecard |
| 616 | * @nested_devlink: devlink instance to attach or NULL to detach |
| 617 | */ |
Jiri Pirko | 9473bc0 | 2023-09-13 09:12:41 +0200 | [diff] [blame] | 618 | int devlink_linecard_nested_dl_set(struct devlink_linecard *linecard, |
| 619 | struct devlink *nested_devlink) |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 620 | { |
Jiri Pirko | 9473bc0 | 2023-09-13 09:12:41 +0200 | [diff] [blame] | 621 | return devlink_rel_nested_in_add(&linecard->rel_index, |
| 622 | linecard->devlink->index, |
| 623 | linecard->index, |
| 624 | devlink_linecard_rel_notify_cb, |
| 625 | devlink_linecard_rel_cleanup_cb, |
| 626 | nested_devlink); |
Jiri Pirko | 9edbe6f | 2023-08-28 08:16:54 +0200 | [diff] [blame] | 627 | } |
| 628 | EXPORT_SYMBOL_GPL(devlink_linecard_nested_dl_set); |