1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2/* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved */ 3 4#include <net/devlink.h> 5 6#include "prestera_devlink.h" 7#include "prestera_hw.h" 8 9/* All driver-specific traps must be documented in 10 * Documentation/networking/devlink/prestera.rst 11 */ 12enum { 13 DEVLINK_PRESTERA_TRAP_ID_BASE = DEVLINK_TRAP_GENERIC_ID_MAX, 14 DEVLINK_PRESTERA_TRAP_ID_ARP_BC, 15 DEVLINK_PRESTERA_TRAP_ID_IS_IS, 16 DEVLINK_PRESTERA_TRAP_ID_OSPF, 17 DEVLINK_PRESTERA_TRAP_ID_IP_BC_MAC, 18 DEVLINK_PRESTERA_TRAP_ID_ROUTER_MC, 19 DEVLINK_PRESTERA_TRAP_ID_VRRP, 20 DEVLINK_PRESTERA_TRAP_ID_DHCP, 21 DEVLINK_PRESTERA_TRAP_ID_MAC_TO_ME, 22 DEVLINK_PRESTERA_TRAP_ID_IPV4_OPTIONS, 23 DEVLINK_PRESTERA_TRAP_ID_IP_DEFAULT_ROUTE, 24 DEVLINK_PRESTERA_TRAP_ID_IP_TO_ME, 25 DEVLINK_PRESTERA_TRAP_ID_IPV4_ICMP_REDIRECT, 26 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_0, 27 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_1, 28 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_2, 29 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_3, 30 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_4, 31 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_5, 32 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_6, 33 DEVLINK_PRESTERA_TRAP_ID_ACL_CODE_7, 34 DEVLINK_PRESTERA_TRAP_ID_BGP, 35 DEVLINK_PRESTERA_TRAP_ID_SSH, 36 DEVLINK_PRESTERA_TRAP_ID_TELNET, 37 DEVLINK_PRESTERA_TRAP_ID_ICMP, 38 DEVLINK_PRESTERA_TRAP_ID_MET_RED, 39 DEVLINK_PRESTERA_TRAP_ID_IP_SIP_IS_ZERO, 40 DEVLINK_PRESTERA_TRAP_ID_IP_UC_DIP_DA_MISMATCH, 41 DEVLINK_PRESTERA_TRAP_ID_ILLEGAL_IPV4_HDR, 42 DEVLINK_PRESTERA_TRAP_ID_ILLEGAL_IP_ADDR, 43 DEVLINK_PRESTERA_TRAP_ID_INVALID_SA, 44 DEVLINK_PRESTERA_TRAP_ID_LOCAL_PORT, 45 DEVLINK_PRESTERA_TRAP_ID_PORT_NO_VLAN, 46 DEVLINK_PRESTERA_TRAP_ID_RXDMA_DROP, 47}; 48 49#define DEVLINK_PRESTERA_TRAP_NAME_ARP_BC \ 50 "arp_bc" 51#define DEVLINK_PRESTERA_TRAP_NAME_IS_IS \ 52 "is_is" 53#define DEVLINK_PRESTERA_TRAP_NAME_OSPF \ 54 "ospf" 55#define DEVLINK_PRESTERA_TRAP_NAME_IP_BC_MAC \ 56 "ip_bc_mac" 57#define DEVLINK_PRESTERA_TRAP_NAME_ROUTER_MC \ 58 "router_mc" 59#define DEVLINK_PRESTERA_TRAP_NAME_VRRP \ 60 "vrrp" 61#define DEVLINK_PRESTERA_TRAP_NAME_DHCP \ 62 "dhcp" 63#define DEVLINK_PRESTERA_TRAP_NAME_MAC_TO_ME \ 64 "mac_to_me" 65#define DEVLINK_PRESTERA_TRAP_NAME_IPV4_OPTIONS \ 66 "ipv4_options" 67#define DEVLINK_PRESTERA_TRAP_NAME_IP_DEFAULT_ROUTE \ 68 "ip_default_route" 69#define DEVLINK_PRESTERA_TRAP_NAME_IP_TO_ME \ 70 "ip_to_me" 71#define DEVLINK_PRESTERA_TRAP_NAME_IPV4_ICMP_REDIRECT \ 72 "ipv4_icmp_redirect" 73#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_0 \ 74 "acl_code_0" 75#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_1 \ 76 "acl_code_1" 77#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_2 \ 78 "acl_code_2" 79#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_3 \ 80 "acl_code_3" 81#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_4 \ 82 "acl_code_4" 83#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_5 \ 84 "acl_code_5" 85#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_6 \ 86 "acl_code_6" 87#define DEVLINK_PRESTERA_TRAP_NAME_ACL_CODE_7 \ 88 "acl_code_7" 89#define DEVLINK_PRESTERA_TRAP_NAME_BGP \ 90 "bgp" 91#define DEVLINK_PRESTERA_TRAP_NAME_SSH \ 92 "ssh" 93#define DEVLINK_PRESTERA_TRAP_NAME_TELNET \ 94 "telnet" 95#define DEVLINK_PRESTERA_TRAP_NAME_ICMP \ 96 "icmp" 97#define DEVLINK_PRESTERA_TRAP_NAME_RXDMA_DROP \ 98 "rxdma_drop" 99#define DEVLINK_PRESTERA_TRAP_NAME_PORT_NO_VLAN \ 100 "port_no_vlan" 101#define DEVLINK_PRESTERA_TRAP_NAME_LOCAL_PORT \ 102 "local_port" 103#define DEVLINK_PRESTERA_TRAP_NAME_INVALID_SA \ 104 "invalid_sa" 105#define DEVLINK_PRESTERA_TRAP_NAME_ILLEGAL_IP_ADDR \ 106 "illegal_ip_addr" 107#define DEVLINK_PRESTERA_TRAP_NAME_ILLEGAL_IPV4_HDR \ 108 "illegal_ipv4_hdr" 109#define DEVLINK_PRESTERA_TRAP_NAME_IP_UC_DIP_DA_MISMATCH \ 110 "ip_uc_dip_da_mismatch" 111#define DEVLINK_PRESTERA_TRAP_NAME_IP_SIP_IS_ZERO \ 112 "ip_sip_is_zero" 113#define DEVLINK_PRESTERA_TRAP_NAME_MET_RED \ 114 "met_red" 115 116struct prestera_trap { 117 struct devlink_trap trap; 118 u8 cpu_code; 119}; 120 121struct prestera_trap_item { 122 enum devlink_trap_action action; 123 void *trap_ctx; 124}; 125 126struct prestera_trap_data { 127 struct prestera_switch *sw; 128 struct prestera_trap_item *trap_items_arr; 129 u32 traps_count; 130}; 131 132#define PRESTERA_TRAP_METADATA DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT 133 134#define PRESTERA_TRAP_CONTROL(_id, _group_id, _action) \ 135 DEVLINK_TRAP_GENERIC(CONTROL, _action, _id, \ 136 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ 137 PRESTERA_TRAP_METADATA) 138 139#define PRESTERA_TRAP_DRIVER_CONTROL(_id, _group_id) \ 140 DEVLINK_TRAP_DRIVER(CONTROL, TRAP, DEVLINK_PRESTERA_TRAP_ID_##_id, \ 141 DEVLINK_PRESTERA_TRAP_NAME_##_id, \ 142 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ 143 PRESTERA_TRAP_METADATA) 144 145#define PRESTERA_TRAP_EXCEPTION(_id, _group_id) \ 146 DEVLINK_TRAP_GENERIC(EXCEPTION, TRAP, _id, \ 147 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ 148 PRESTERA_TRAP_METADATA) 149 150#define PRESTERA_TRAP_DRIVER_EXCEPTION(_id, _group_id) \ 151 DEVLINK_TRAP_DRIVER(EXCEPTION, TRAP, DEVLINK_PRESTERA_TRAP_ID_##_id, \ 152 DEVLINK_PRESTERA_TRAP_NAME_##_id, \ 153 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ 154 PRESTERA_TRAP_METADATA) 155 156#define PRESTERA_TRAP_DRIVER_DROP(_id, _group_id) \ 157 DEVLINK_TRAP_DRIVER(DROP, DROP, DEVLINK_PRESTERA_TRAP_ID_##_id, \ 158 DEVLINK_PRESTERA_TRAP_NAME_##_id, \ 159 DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, \ 160 PRESTERA_TRAP_METADATA) 161 162static const struct devlink_trap_group prestera_trap_groups_arr[] = { 163 /* No policer is associated with following groups (policerid == 0)*/ 164 DEVLINK_TRAP_GROUP_GENERIC(L2_DROPS, 0), 165 DEVLINK_TRAP_GROUP_GENERIC(L3_DROPS, 0), 166 DEVLINK_TRAP_GROUP_GENERIC(L3_EXCEPTIONS, 0), 167 DEVLINK_TRAP_GROUP_GENERIC(NEIGH_DISCOVERY, 0), 168 DEVLINK_TRAP_GROUP_GENERIC(ACL_TRAP, 0), 169 DEVLINK_TRAP_GROUP_GENERIC(ACL_DROPS, 0), 170 DEVLINK_TRAP_GROUP_GENERIC(ACL_SAMPLE, 0), 171 DEVLINK_TRAP_GROUP_GENERIC(OSPF, 0), 172 DEVLINK_TRAP_GROUP_GENERIC(STP, 0), 173 DEVLINK_TRAP_GROUP_GENERIC(LACP, 0), 174 DEVLINK_TRAP_GROUP_GENERIC(LLDP, 0), 175 DEVLINK_TRAP_GROUP_GENERIC(VRRP, 0), 176 DEVLINK_TRAP_GROUP_GENERIC(DHCP, 0), 177 DEVLINK_TRAP_GROUP_GENERIC(BGP, 0), 178 DEVLINK_TRAP_GROUP_GENERIC(LOCAL_DELIVERY, 0), 179 DEVLINK_TRAP_GROUP_GENERIC(BUFFER_DROPS, 0), 180}; 181 182/* Initialize trap list, as well as associate CPU code with them. */ 183static struct prestera_trap prestera_trap_items_arr[] = { 184 { 185 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ARP_BC, NEIGH_DISCOVERY), 186 .cpu_code = 5, 187 }, 188 { 189 .trap = PRESTERA_TRAP_DRIVER_CONTROL(IS_IS, LOCAL_DELIVERY), 190 .cpu_code = 13, 191 }, 192 { 193 .trap = PRESTERA_TRAP_DRIVER_CONTROL(OSPF, OSPF), 194 .cpu_code = 16, 195 }, 196 { 197 .trap = PRESTERA_TRAP_DRIVER_CONTROL(IP_BC_MAC, LOCAL_DELIVERY), 198 .cpu_code = 19, 199 }, 200 { 201 .trap = PRESTERA_TRAP_CONTROL(STP, STP, TRAP), 202 .cpu_code = 26, 203 }, 204 { 205 .trap = PRESTERA_TRAP_CONTROL(LACP, LACP, TRAP), 206 .cpu_code = 27, 207 }, 208 { 209 .trap = PRESTERA_TRAP_CONTROL(LLDP, LLDP, TRAP), 210 .cpu_code = 28, 211 }, 212 { 213 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ROUTER_MC, LOCAL_DELIVERY), 214 .cpu_code = 29, 215 }, 216 { 217 .trap = PRESTERA_TRAP_DRIVER_CONTROL(VRRP, VRRP), 218 .cpu_code = 30, 219 }, 220 { 221 .trap = PRESTERA_TRAP_DRIVER_CONTROL(DHCP, DHCP), 222 .cpu_code = 33, 223 }, 224 { 225 .trap = PRESTERA_TRAP_EXCEPTION(MTU_ERROR, L3_EXCEPTIONS), 226 .cpu_code = 63, 227 }, 228 { 229 .trap = PRESTERA_TRAP_DRIVER_CONTROL(MAC_TO_ME, LOCAL_DELIVERY), 230 .cpu_code = 65, 231 }, 232 { 233 .trap = PRESTERA_TRAP_EXCEPTION(TTL_ERROR, L3_EXCEPTIONS), 234 .cpu_code = 133, 235 }, 236 { 237 .trap = PRESTERA_TRAP_DRIVER_EXCEPTION(IPV4_OPTIONS, 238 L3_EXCEPTIONS), 239 .cpu_code = 141, 240 }, 241 { 242 .trap = PRESTERA_TRAP_DRIVER_CONTROL(IP_DEFAULT_ROUTE, 243 LOCAL_DELIVERY), 244 .cpu_code = 160, 245 }, 246 { 247 .trap = PRESTERA_TRAP_CONTROL(LOCAL_ROUTE, LOCAL_DELIVERY, 248 TRAP), 249 .cpu_code = 161, 250 }, 251 { 252 .trap = PRESTERA_TRAP_DRIVER_EXCEPTION(IPV4_ICMP_REDIRECT, 253 L3_EXCEPTIONS), 254 .cpu_code = 180, 255 }, 256 { 257 .trap = PRESTERA_TRAP_CONTROL(ARP_RESPONSE, NEIGH_DISCOVERY, 258 TRAP), 259 .cpu_code = 188, 260 }, 261 { 262 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_0, ACL_TRAP), 263 .cpu_code = 192, 264 }, 265 { 266 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_1, ACL_TRAP), 267 .cpu_code = 193, 268 }, 269 { 270 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_2, ACL_TRAP), 271 .cpu_code = 194, 272 }, 273 { 274 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_3, ACL_TRAP), 275 .cpu_code = 195, 276 }, 277 { 278 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_4, ACL_TRAP), 279 .cpu_code = 196, 280 }, 281 { 282 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_5, ACL_TRAP), 283 .cpu_code = 197, 284 }, 285 { 286 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_6, ACL_TRAP), 287 .cpu_code = 198, 288 }, 289 { 290 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ACL_CODE_7, ACL_TRAP), 291 .cpu_code = 199, 292 }, 293 { 294 .trap = PRESTERA_TRAP_DRIVER_CONTROL(BGP, BGP), 295 .cpu_code = 206, 296 }, 297 { 298 .trap = PRESTERA_TRAP_DRIVER_CONTROL(SSH, LOCAL_DELIVERY), 299 .cpu_code = 207, 300 }, 301 { 302 .trap = PRESTERA_TRAP_DRIVER_CONTROL(TELNET, LOCAL_DELIVERY), 303 .cpu_code = 208, 304 }, 305 { 306 .trap = PRESTERA_TRAP_DRIVER_CONTROL(ICMP, LOCAL_DELIVERY), 307 .cpu_code = 209, 308 }, 309 { 310 .trap = PRESTERA_TRAP_DRIVER_DROP(RXDMA_DROP, BUFFER_DROPS), 311 .cpu_code = 37, 312 }, 313 { 314 .trap = PRESTERA_TRAP_DRIVER_DROP(PORT_NO_VLAN, L2_DROPS), 315 .cpu_code = 39, 316 }, 317 { 318 .trap = PRESTERA_TRAP_DRIVER_DROP(LOCAL_PORT, L2_DROPS), 319 .cpu_code = 56, 320 }, 321 { 322 .trap = PRESTERA_TRAP_DRIVER_DROP(INVALID_SA, L2_DROPS), 323 .cpu_code = 60, 324 }, 325 { 326 .trap = PRESTERA_TRAP_DRIVER_DROP(ILLEGAL_IP_ADDR, L3_DROPS), 327 .cpu_code = 136, 328 }, 329 { 330 .trap = PRESTERA_TRAP_DRIVER_DROP(ILLEGAL_IPV4_HDR, L3_DROPS), 331 .cpu_code = 137, 332 }, 333 { 334 .trap = PRESTERA_TRAP_DRIVER_DROP(IP_UC_DIP_DA_MISMATCH, 335 L3_DROPS), 336 .cpu_code = 138, 337 }, 338 { 339 .trap = PRESTERA_TRAP_DRIVER_DROP(IP_SIP_IS_ZERO, L3_DROPS), 340 .cpu_code = 145, 341 }, 342 { 343 .trap = PRESTERA_TRAP_DRIVER_DROP(MET_RED, BUFFER_DROPS), 344 .cpu_code = 185, 345 }, 346}; 347 348static int prestera_drop_counter_get(struct devlink *devlink, 349 const struct devlink_trap *trap, 350 u64 *p_drops); 351 352static int prestera_dl_info_get(struct devlink *dl, 353 struct devlink_info_req *req, 354 struct netlink_ext_ack *extack) 355{ 356 struct prestera_switch *sw = devlink_priv(dl); 357 char buf[16]; 358 359 snprintf(buf, sizeof(buf), "%d.%d.%d", 360 sw->dev->fw_rev.maj, 361 sw->dev->fw_rev.min, 362 sw->dev->fw_rev.sub); 363 364 return devlink_info_version_running_put(req, 365 DEVLINK_INFO_VERSION_GENERIC_FW, 366 buf); 367} 368 369static int prestera_trap_init(struct devlink *devlink, 370 const struct devlink_trap *trap, void *trap_ctx); 371 372static int prestera_trap_action_set(struct devlink *devlink, 373 const struct devlink_trap *trap, 374 enum devlink_trap_action action, 375 struct netlink_ext_ack *extack); 376 377static const struct devlink_ops prestera_dl_ops = { 378 .info_get = prestera_dl_info_get, 379 .trap_init = prestera_trap_init, 380 .trap_action_set = prestera_trap_action_set, 381 .trap_drop_counter_get = prestera_drop_counter_get, 382}; 383 384struct prestera_switch *prestera_devlink_alloc(struct prestera_device *dev) 385{ 386 struct devlink *dl; 387 388 dl = devlink_alloc(&prestera_dl_ops, sizeof(struct prestera_switch), 389 dev->dev); 390 391 return devlink_priv(dl); 392} 393 394void prestera_devlink_free(struct prestera_switch *sw) 395{ 396 struct devlink *dl = priv_to_devlink(sw); 397 398 devlink_free(dl); 399} 400 401void prestera_devlink_register(struct prestera_switch *sw) 402{ 403 struct devlink *dl = priv_to_devlink(sw); 404 405 devlink_register(dl); 406} 407 408void prestera_devlink_unregister(struct prestera_switch *sw) 409{ 410 struct devlink *dl = priv_to_devlink(sw); 411 412 devlink_unregister(dl); 413} 414 415int prestera_devlink_port_register(struct prestera_port *port) 416{ 417 struct prestera_switch *sw = port->sw; 418 struct devlink *dl = priv_to_devlink(sw); 419 struct devlink_port_attrs attrs = {}; 420 int err; 421 422 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; 423 attrs.phys.port_number = port->fp_id; 424 attrs.switch_id.id_len = sizeof(sw->id); 425 memcpy(attrs.switch_id.id, &sw->id, attrs.switch_id.id_len); 426 427 devlink_port_attrs_set(&port->dl_port, &attrs); 428 429 err = devlink_port_register(dl, &port->dl_port, port->fp_id); 430 if (err) { 431 dev_err(prestera_dev(sw), "devlink_port_register failed: %d\n", err); 432 return err; 433 } 434 435 return 0; 436} 437 438void prestera_devlink_port_unregister(struct prestera_port *port) 439{ 440 devlink_port_unregister(&port->dl_port); 441} 442 443int prestera_devlink_traps_register(struct prestera_switch *sw) 444{ 445 const u32 groups_count = ARRAY_SIZE(prestera_trap_groups_arr); 446 const u32 traps_count = ARRAY_SIZE(prestera_trap_items_arr); 447 struct devlink *devlink = priv_to_devlink(sw); 448 struct prestera_trap_data *trap_data; 449 struct prestera_trap *prestera_trap; 450 int err, i; 451 452 trap_data = kzalloc(sizeof(*trap_data), GFP_KERNEL); 453 if (!trap_data) 454 return -ENOMEM; 455 456 trap_data->trap_items_arr = kcalloc(traps_count, 457 sizeof(struct prestera_trap_item), 458 GFP_KERNEL); 459 if (!trap_data->trap_items_arr) { 460 err = -ENOMEM; 461 goto err_trap_items_alloc; 462 } 463 464 trap_data->sw = sw; 465 trap_data->traps_count = traps_count; 466 sw->trap_data = trap_data; 467 468 err = devlink_trap_groups_register(devlink, prestera_trap_groups_arr, 469 groups_count); 470 if (err) 471 goto err_groups_register; 472 473 for (i = 0; i < traps_count; i++) { 474 prestera_trap = &prestera_trap_items_arr[i]; 475 err = devlink_traps_register(devlink, &prestera_trap->trap, 1, 476 sw); 477 if (err) 478 goto err_trap_register; 479 } 480 481 return 0; 482 483err_trap_register: 484 for (i--; i >= 0; i--) { 485 prestera_trap = &prestera_trap_items_arr[i]; 486 devlink_traps_unregister(devlink, &prestera_trap->trap, 1); 487 } 488 devlink_trap_groups_unregister(devlink, prestera_trap_groups_arr, 489 groups_count); 490err_groups_register: 491 kfree(trap_data->trap_items_arr); 492err_trap_items_alloc: 493 kfree(trap_data); 494 return err; 495} 496 497static struct prestera_trap_item * 498prestera_get_trap_item_by_cpu_code(struct prestera_switch *sw, u8 cpu_code) 499{ 500 struct prestera_trap_data *trap_data = sw->trap_data; 501 struct prestera_trap *prestera_trap; 502 int i; 503 504 for (i = 0; i < trap_data->traps_count; i++) { 505 prestera_trap = &prestera_trap_items_arr[i]; 506 if (cpu_code == prestera_trap->cpu_code) 507 return &trap_data->trap_items_arr[i]; 508 } 509 510 return NULL; 511} 512 513void prestera_devlink_trap_report(struct prestera_port *port, 514 struct sk_buff *skb, u8 cpu_code) 515{ 516 struct prestera_trap_item *trap_item; 517 struct devlink *devlink; 518 519 devlink = port->dl_port.devlink; 520 521 trap_item = prestera_get_trap_item_by_cpu_code(port->sw, cpu_code); 522 if (unlikely(!trap_item)) 523 return; 524 525 devlink_trap_report(devlink, skb, trap_item->trap_ctx, 526 &port->dl_port, NULL); 527} 528 529static struct prestera_trap_item * 530prestera_devlink_trap_item_lookup(struct prestera_switch *sw, u16 trap_id) 531{ 532 struct prestera_trap_data *trap_data = sw->trap_data; 533 int i; 534 535 for (i = 0; i < ARRAY_SIZE(prestera_trap_items_arr); i++) { 536 if (prestera_trap_items_arr[i].trap.id == trap_id) 537 return &trap_data->trap_items_arr[i]; 538 } 539 540 return NULL; 541} 542 543static int prestera_trap_init(struct devlink *devlink, 544 const struct devlink_trap *trap, void *trap_ctx) 545{ 546 struct prestera_switch *sw = devlink_priv(devlink); 547 struct prestera_trap_item *trap_item; 548 549 trap_item = prestera_devlink_trap_item_lookup(sw, trap->id); 550 if (WARN_ON(!trap_item)) 551 return -EINVAL; 552 553 trap_item->trap_ctx = trap_ctx; 554 trap_item->action = trap->init_action; 555 556 return 0; 557} 558 559static int prestera_trap_action_set(struct devlink *devlink, 560 const struct devlink_trap *trap, 561 enum devlink_trap_action action, 562 struct netlink_ext_ack *extack) 563{ 564 /* Currently, driver does not support trap action altering */ 565 return -EOPNOTSUPP; 566} 567 568static int prestera_drop_counter_get(struct devlink *devlink, 569 const struct devlink_trap *trap, 570 u64 *p_drops) 571{ 572 struct prestera_switch *sw = devlink_priv(devlink); 573 enum prestera_hw_cpu_code_cnt_t cpu_code_type = 574 PRESTERA_HW_CPU_CODE_CNT_TYPE_DROP; 575 struct prestera_trap *prestera_trap = 576 container_of(trap, struct prestera_trap, trap); 577 578 return prestera_hw_cpu_code_counters_get(sw, prestera_trap->cpu_code, 579 cpu_code_type, p_drops); 580} 581 582void prestera_devlink_traps_unregister(struct prestera_switch *sw) 583{ 584 struct prestera_trap_data *trap_data = sw->trap_data; 585 struct devlink *dl = priv_to_devlink(sw); 586 const struct devlink_trap *trap; 587 int i; 588 589 for (i = 0; i < ARRAY_SIZE(prestera_trap_items_arr); ++i) { 590 trap = &prestera_trap_items_arr[i].trap; 591 devlink_traps_unregister(dl, trap, 1); 592 } 593 594 devlink_trap_groups_unregister(dl, prestera_trap_groups_arr, 595 ARRAY_SIZE(prestera_trap_groups_arr)); 596 kfree(trap_data->trap_items_arr); 597 kfree(trap_data); 598} 599