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 <linux/etherdevice.h> 5 #include <linux/jiffies.h> 6 #include <linux/list.h> 7 #include <linux/module.h> 8 #include <linux/netdev_features.h> 9 #include <linux/of.h> 10 #include <linux/of_net.h> 11 #include <linux/if_vlan.h> 12 #include <linux/phylink.h> 13 14 #include "prestera.h" 15 #include "prestera_hw.h" 16 #include "prestera_acl.h" 17 #include "prestera_flow.h" 18 #include "prestera_span.h" 19 #include "prestera_rxtx.h" 20 #include "prestera_devlink.h" 21 #include "prestera_ethtool.h" 22 #include "prestera_counter.h" 23 #include "prestera_switchdev.h" 24 25 #define PRESTERA_MTU_DEFAULT 1536 26 27 #define PRESTERA_STATS_DELAY_MS 1000 28 29 #define PRESTERA_MAC_ADDR_NUM_MAX 255 30 31 static struct workqueue_struct *prestera_wq; 32 static struct workqueue_struct *prestera_owq; 33 34 void prestera_queue_work(struct work_struct *work) 35 { 36 queue_work(prestera_owq, work); 37 } 38 39 void prestera_queue_delayed_work(struct delayed_work *work, unsigned long delay) 40 { 41 queue_delayed_work(prestera_wq, work, delay); 42 } 43 44 void prestera_queue_drain(void) 45 { 46 drain_workqueue(prestera_wq); 47 drain_workqueue(prestera_owq); 48 } 49 50 int prestera_port_learning_set(struct prestera_port *port, bool learn) 51 { 52 return prestera_hw_port_learning_set(port, learn); 53 } 54 55 int prestera_port_uc_flood_set(struct prestera_port *port, bool flood) 56 { 57 return prestera_hw_port_uc_flood_set(port, flood); 58 } 59 60 int prestera_port_mc_flood_set(struct prestera_port *port, bool flood) 61 { 62 return prestera_hw_port_mc_flood_set(port, flood); 63 } 64 65 int prestera_port_br_locked_set(struct prestera_port *port, bool br_locked) 66 { 67 return prestera_hw_port_br_locked_set(port, br_locked); 68 } 69 70 int prestera_port_pvid_set(struct prestera_port *port, u16 vid) 71 { 72 enum prestera_accept_frm_type frm_type; 73 int err; 74 75 frm_type = PRESTERA_ACCEPT_FRAME_TYPE_TAGGED; 76 77 if (vid) { 78 err = prestera_hw_vlan_port_vid_set(port, vid); 79 if (err) 80 return err; 81 82 frm_type = PRESTERA_ACCEPT_FRAME_TYPE_ALL; 83 } 84 85 err = prestera_hw_port_accept_frm_type(port, frm_type); 86 if (err && frm_type == PRESTERA_ACCEPT_FRAME_TYPE_ALL) 87 prestera_hw_vlan_port_vid_set(port, port->pvid); 88 89 port->pvid = vid; 90 return 0; 91 } 92 93 struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw, 94 u32 dev_id, u32 hw_id) 95 { 96 struct prestera_port *port = NULL, *tmp; 97 98 read_lock(&sw->port_list_lock); 99 list_for_each_entry(tmp, &sw->port_list, list) { 100 if (tmp->dev_id == dev_id && tmp->hw_id == hw_id) { 101 port = tmp; 102 break; 103 } 104 } 105 read_unlock(&sw->port_list_lock); 106 107 return port; 108 } 109 110 struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id) 111 { 112 struct prestera_port *port = NULL, *tmp; 113 114 read_lock(&sw->port_list_lock); 115 list_for_each_entry(tmp, &sw->port_list, list) { 116 if (tmp->id == id) { 117 port = tmp; 118 break; 119 } 120 } 121 read_unlock(&sw->port_list_lock); 122 123 return port; 124 } 125 126 struct prestera_switch *prestera_switch_get(struct net_device *dev) 127 { 128 struct prestera_port *port; 129 130 port = prestera_port_dev_lower_find(dev); 131 return port ? port->sw : NULL; 132 } 133 134 int prestera_port_cfg_mac_read(struct prestera_port *port, 135 struct prestera_port_mac_config *cfg) 136 { 137 *cfg = port->cfg_mac; 138 return 0; 139 } 140 141 int prestera_port_cfg_mac_write(struct prestera_port *port, 142 struct prestera_port_mac_config *cfg) 143 { 144 int err; 145 146 err = prestera_hw_port_mac_mode_set(port, cfg->admin, 147 cfg->mode, cfg->inband, cfg->speed, 148 cfg->duplex, cfg->fec); 149 if (err) 150 return err; 151 152 port->cfg_mac = *cfg; 153 return 0; 154 } 155 156 static int prestera_port_open(struct net_device *dev) 157 { 158 struct prestera_port *port = netdev_priv(dev); 159 struct prestera_port_mac_config cfg_mac; 160 int err = 0; 161 162 if (port->phy_link) { 163 phylink_start(port->phy_link); 164 } else { 165 if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) { 166 err = prestera_port_cfg_mac_read(port, &cfg_mac); 167 if (!err) { 168 cfg_mac.admin = true; 169 err = prestera_port_cfg_mac_write(port, 170 &cfg_mac); 171 } 172 } else { 173 port->cfg_phy.admin = true; 174 err = prestera_hw_port_phy_mode_set(port, true, 175 port->autoneg, 176 port->cfg_phy.mode, 177 port->adver_link_modes, 178 port->cfg_phy.mdix); 179 } 180 } 181 182 netif_start_queue(dev); 183 184 return err; 185 } 186 187 static int prestera_port_close(struct net_device *dev) 188 { 189 struct prestera_port *port = netdev_priv(dev); 190 struct prestera_port_mac_config cfg_mac; 191 int err = 0; 192 193 netif_stop_queue(dev); 194 195 if (port->phy_link) { 196 phylink_stop(port->phy_link); 197 phylink_disconnect_phy(port->phy_link); 198 err = prestera_port_cfg_mac_read(port, &cfg_mac); 199 if (!err) { 200 cfg_mac.admin = false; 201 prestera_port_cfg_mac_write(port, &cfg_mac); 202 } 203 } else { 204 if (port->caps.transceiver == PRESTERA_PORT_TCVR_SFP) { 205 err = prestera_port_cfg_mac_read(port, &cfg_mac); 206 if (!err) { 207 cfg_mac.admin = false; 208 prestera_port_cfg_mac_write(port, &cfg_mac); 209 } 210 } else { 211 port->cfg_phy.admin = false; 212 err = prestera_hw_port_phy_mode_set(port, false, port->autoneg, 213 port->cfg_phy.mode, 214 port->adver_link_modes, 215 port->cfg_phy.mdix); 216 } 217 } 218 219 return err; 220 } 221 222 static void 223 prestera_port_mac_state_cache_read(struct prestera_port *port, 224 struct prestera_port_mac_state *state) 225 { 226 spin_lock(&port->state_mac_lock); 227 *state = port->state_mac; 228 spin_unlock(&port->state_mac_lock); 229 } 230 231 static void 232 prestera_port_mac_state_cache_write(struct prestera_port *port, 233 struct prestera_port_mac_state *state) 234 { 235 spin_lock(&port->state_mac_lock); 236 port->state_mac = *state; 237 spin_unlock(&port->state_mac_lock); 238 } 239 240 static struct prestera_port *prestera_pcs_to_port(struct phylink_pcs *pcs) 241 { 242 return container_of(pcs, struct prestera_port, phylink_pcs); 243 } 244 245 static void prestera_mac_config(struct phylink_config *config, 246 unsigned int an_mode, 247 const struct phylink_link_state *state) 248 { 249 } 250 251 static void prestera_mac_link_down(struct phylink_config *config, 252 unsigned int mode, phy_interface_t interface) 253 { 254 struct net_device *ndev = to_net_dev(config->dev); 255 struct prestera_port *port = netdev_priv(ndev); 256 struct prestera_port_mac_state state_mac; 257 258 /* Invalidate. Parameters will update on next link event. */ 259 memset(&state_mac, 0, sizeof(state_mac)); 260 state_mac.valid = false; 261 prestera_port_mac_state_cache_write(port, &state_mac); 262 } 263 264 static void prestera_mac_link_up(struct phylink_config *config, 265 struct phy_device *phy, 266 unsigned int mode, phy_interface_t interface, 267 int speed, int duplex, 268 bool tx_pause, bool rx_pause) 269 { 270 } 271 272 static struct phylink_pcs * 273 prestera_mac_select_pcs(struct phylink_config *config, 274 phy_interface_t interface) 275 { 276 struct net_device *dev = to_net_dev(config->dev); 277 struct prestera_port *port = netdev_priv(dev); 278 279 return &port->phylink_pcs; 280 } 281 282 static void prestera_pcs_get_state(struct phylink_pcs *pcs, 283 struct phylink_link_state *state) 284 { 285 struct prestera_port *port = container_of(pcs, struct prestera_port, 286 phylink_pcs); 287 struct prestera_port_mac_state smac; 288 289 prestera_port_mac_state_cache_read(port, &smac); 290 291 if (smac.valid) { 292 state->link = smac.oper ? 1 : 0; 293 /* AN is completed, when port is up */ 294 state->an_complete = (smac.oper && port->autoneg) ? 1 : 0; 295 state->speed = smac.speed; 296 state->duplex = smac.duplex; 297 } else { 298 state->link = 0; 299 state->an_complete = 0; 300 } 301 } 302 303 static int prestera_pcs_config(struct phylink_pcs *pcs, 304 unsigned int mode, 305 phy_interface_t interface, 306 const unsigned long *advertising, 307 bool permit_pause_to_mac) 308 { 309 struct prestera_port *port = prestera_pcs_to_port(pcs); 310 struct prestera_port_mac_config cfg_mac; 311 int err; 312 313 err = prestera_port_cfg_mac_read(port, &cfg_mac); 314 if (err) 315 return err; 316 317 cfg_mac.admin = true; 318 cfg_mac.fec = PRESTERA_PORT_FEC_OFF; 319 320 switch (interface) { 321 case PHY_INTERFACE_MODE_10GBASER: 322 cfg_mac.speed = SPEED_10000; 323 cfg_mac.inband = 0; 324 cfg_mac.mode = PRESTERA_MAC_MODE_SR_LR; 325 break; 326 case PHY_INTERFACE_MODE_2500BASEX: 327 cfg_mac.speed = SPEED_2500; 328 cfg_mac.duplex = DUPLEX_FULL; 329 cfg_mac.inband = test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, 330 advertising); 331 cfg_mac.mode = PRESTERA_MAC_MODE_SGMII; 332 break; 333 case PHY_INTERFACE_MODE_SGMII: 334 cfg_mac.inband = 1; 335 cfg_mac.mode = PRESTERA_MAC_MODE_SGMII; 336 break; 337 case PHY_INTERFACE_MODE_1000BASEX: 338 default: 339 cfg_mac.speed = SPEED_1000; 340 cfg_mac.duplex = DUPLEX_FULL; 341 cfg_mac.inband = test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, 342 advertising); 343 cfg_mac.mode = PRESTERA_MAC_MODE_1000BASE_X; 344 break; 345 } 346 347 err = prestera_port_cfg_mac_write(port, &cfg_mac); 348 if (err) 349 return err; 350 351 return 0; 352 } 353 354 static void prestera_pcs_an_restart(struct phylink_pcs *pcs) 355 { 356 /* TODO: add 1000basex AN restart support 357 * (Currently FW has no support for 1000baseX AN restart, but it will in the future, 358 * so as for now the function would stay empty.) 359 */ 360 } 361 362 static const struct phylink_mac_ops prestera_mac_ops = { 363 .mac_select_pcs = prestera_mac_select_pcs, 364 .mac_config = prestera_mac_config, 365 .mac_link_down = prestera_mac_link_down, 366 .mac_link_up = prestera_mac_link_up, 367 }; 368 369 static const struct phylink_pcs_ops prestera_pcs_ops = { 370 .pcs_get_state = prestera_pcs_get_state, 371 .pcs_config = prestera_pcs_config, 372 .pcs_an_restart = prestera_pcs_an_restart, 373 }; 374 375 static int prestera_port_sfp_bind(struct prestera_port *port) 376 { 377 struct prestera_switch *sw = port->sw; 378 struct device_node *ports, *node; 379 struct fwnode_handle *fwnode; 380 struct phylink *phy_link; 381 int err; 382 383 if (!sw->np) 384 return 0; 385 386 of_node_get(sw->np); 387 ports = of_find_node_by_name(sw->np, "ports"); 388 389 for_each_child_of_node(ports, node) { 390 int num; 391 392 err = of_property_read_u32(node, "prestera,port-num", &num); 393 if (err) { 394 dev_err(sw->dev->dev, 395 "device node %pOF has no valid reg property: %d\n", 396 node, err); 397 goto out; 398 } 399 400 if (port->fp_id != num) 401 continue; 402 403 port->phylink_pcs.ops = &prestera_pcs_ops; 404 405 port->phy_config.dev = &port->dev->dev; 406 port->phy_config.type = PHYLINK_NETDEV; 407 408 fwnode = of_fwnode_handle(node); 409 410 __set_bit(PHY_INTERFACE_MODE_10GBASER, 411 port->phy_config.supported_interfaces); 412 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 413 port->phy_config.supported_interfaces); 414 __set_bit(PHY_INTERFACE_MODE_SGMII, 415 port->phy_config.supported_interfaces); 416 __set_bit(PHY_INTERFACE_MODE_1000BASEX, 417 port->phy_config.supported_interfaces); 418 419 port->phy_config.mac_capabilities = 420 MAC_1000 | MAC_2500FD | MAC_10000FD; 421 422 phy_link = phylink_create(&port->phy_config, fwnode, 423 PHY_INTERFACE_MODE_INTERNAL, 424 &prestera_mac_ops); 425 if (IS_ERR(phy_link)) { 426 netdev_err(port->dev, "failed to create phylink\n"); 427 err = PTR_ERR(phy_link); 428 goto out; 429 } 430 431 port->phy_link = phy_link; 432 break; 433 } 434 435 out: 436 of_node_put(node); 437 of_node_put(ports); 438 return err; 439 } 440 441 static int prestera_port_sfp_unbind(struct prestera_port *port) 442 { 443 if (port->phy_link) 444 phylink_destroy(port->phy_link); 445 446 return 0; 447 } 448 449 static netdev_tx_t prestera_port_xmit(struct sk_buff *skb, 450 struct net_device *dev) 451 { 452 return prestera_rxtx_xmit(netdev_priv(dev), skb); 453 } 454 455 int prestera_is_valid_mac_addr(struct prestera_port *port, const u8 *addr) 456 { 457 if (!is_valid_ether_addr(addr)) 458 return -EADDRNOTAVAIL; 459 460 /* firmware requires that port's MAC address contains first 5 bytes 461 * of the base MAC address 462 */ 463 if (memcmp(port->sw->base_mac, addr, ETH_ALEN - 1)) 464 return -EINVAL; 465 466 return 0; 467 } 468 469 static int prestera_port_set_mac_address(struct net_device *dev, void *p) 470 { 471 struct prestera_port *port = netdev_priv(dev); 472 struct sockaddr *addr = p; 473 int err; 474 475 err = prestera_is_valid_mac_addr(port, addr->sa_data); 476 if (err) 477 return err; 478 479 err = prestera_hw_port_mac_set(port, addr->sa_data); 480 if (err) 481 return err; 482 483 eth_hw_addr_set(dev, addr->sa_data); 484 485 return 0; 486 } 487 488 static int prestera_port_change_mtu(struct net_device *dev, int mtu) 489 { 490 struct prestera_port *port = netdev_priv(dev); 491 int err; 492 493 err = prestera_hw_port_mtu_set(port, mtu); 494 if (err) 495 return err; 496 497 dev->mtu = mtu; 498 499 return 0; 500 } 501 502 static void prestera_port_get_stats64(struct net_device *dev, 503 struct rtnl_link_stats64 *stats) 504 { 505 struct prestera_port *port = netdev_priv(dev); 506 struct prestera_port_stats *port_stats = &port->cached_hw_stats.stats; 507 508 stats->rx_packets = port_stats->broadcast_frames_received + 509 port_stats->multicast_frames_received + 510 port_stats->unicast_frames_received; 511 512 stats->tx_packets = port_stats->broadcast_frames_sent + 513 port_stats->multicast_frames_sent + 514 port_stats->unicast_frames_sent; 515 516 stats->rx_bytes = port_stats->good_octets_received; 517 518 stats->tx_bytes = port_stats->good_octets_sent; 519 520 stats->rx_errors = port_stats->rx_error_frame_received; 521 stats->tx_errors = port_stats->mac_trans_error; 522 523 stats->rx_dropped = port_stats->buffer_overrun; 524 stats->tx_dropped = 0; 525 526 stats->multicast = port_stats->multicast_frames_received; 527 stats->collisions = port_stats->excessive_collision; 528 529 stats->rx_crc_errors = port_stats->bad_crc; 530 } 531 532 static void prestera_port_get_hw_stats(struct prestera_port *port) 533 { 534 prestera_hw_port_stats_get(port, &port->cached_hw_stats.stats); 535 } 536 537 static void prestera_port_stats_update(struct work_struct *work) 538 { 539 struct prestera_port *port = 540 container_of(work, struct prestera_port, 541 cached_hw_stats.caching_dw.work); 542 543 prestera_port_get_hw_stats(port); 544 545 queue_delayed_work(prestera_wq, &port->cached_hw_stats.caching_dw, 546 msecs_to_jiffies(PRESTERA_STATS_DELAY_MS)); 547 } 548 549 static int prestera_port_setup_tc(struct net_device *dev, 550 enum tc_setup_type type, 551 void *type_data) 552 { 553 struct prestera_port *port = netdev_priv(dev); 554 555 switch (type) { 556 case TC_SETUP_BLOCK: 557 return prestera_flow_block_setup(port, type_data); 558 default: 559 return -EOPNOTSUPP; 560 } 561 } 562 563 static const struct net_device_ops prestera_netdev_ops = { 564 .ndo_open = prestera_port_open, 565 .ndo_stop = prestera_port_close, 566 .ndo_start_xmit = prestera_port_xmit, 567 .ndo_setup_tc = prestera_port_setup_tc, 568 .ndo_change_mtu = prestera_port_change_mtu, 569 .ndo_get_stats64 = prestera_port_get_stats64, 570 .ndo_set_mac_address = prestera_port_set_mac_address, 571 }; 572 573 int prestera_port_autoneg_set(struct prestera_port *port, u64 link_modes) 574 { 575 int err; 576 577 if (port->autoneg && port->adver_link_modes == link_modes) 578 return 0; 579 580 err = prestera_hw_port_phy_mode_set(port, port->cfg_phy.admin, 581 true, 0, link_modes, 582 port->cfg_phy.mdix); 583 if (err) 584 return err; 585 586 port->adver_fec = BIT(PRESTERA_PORT_FEC_OFF); 587 port->adver_link_modes = link_modes; 588 port->cfg_phy.mode = 0; 589 port->autoneg = true; 590 591 return 0; 592 } 593 594 static void prestera_port_list_add(struct prestera_port *port) 595 { 596 write_lock(&port->sw->port_list_lock); 597 list_add(&port->list, &port->sw->port_list); 598 write_unlock(&port->sw->port_list_lock); 599 } 600 601 static void prestera_port_list_del(struct prestera_port *port) 602 { 603 write_lock(&port->sw->port_list_lock); 604 list_del(&port->list); 605 write_unlock(&port->sw->port_list_lock); 606 } 607 608 static int prestera_port_create(struct prestera_switch *sw, u32 id) 609 { 610 struct prestera_port_mac_config cfg_mac; 611 struct prestera_port *port; 612 struct net_device *dev; 613 int err; 614 615 dev = alloc_etherdev(sizeof(*port)); 616 if (!dev) 617 return -ENOMEM; 618 619 port = netdev_priv(dev); 620 621 INIT_LIST_HEAD(&port->vlans_list); 622 port->pvid = PRESTERA_DEFAULT_VID; 623 port->lag = NULL; 624 port->dev = dev; 625 port->id = id; 626 port->sw = sw; 627 628 spin_lock_init(&port->state_mac_lock); 629 630 err = prestera_hw_port_info_get(port, &port->dev_id, &port->hw_id, 631 &port->fp_id); 632 if (err) { 633 dev_err(prestera_dev(sw), "Failed to get port(%u) info\n", id); 634 goto err_port_info_get; 635 } 636 637 err = prestera_devlink_port_register(port); 638 if (err) 639 goto err_dl_port_register; 640 641 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_HW_TC; 642 dev->netdev_ops = &prestera_netdev_ops; 643 dev->ethtool_ops = &prestera_ethtool_ops; 644 SET_NETDEV_DEV(dev, sw->dev->dev); 645 SET_NETDEV_DEVLINK_PORT(dev, &port->dl_port); 646 647 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) 648 netif_carrier_off(dev); 649 650 dev->mtu = min_t(unsigned int, sw->mtu_max, PRESTERA_MTU_DEFAULT); 651 dev->min_mtu = sw->mtu_min; 652 dev->max_mtu = sw->mtu_max; 653 654 err = prestera_hw_port_mtu_set(port, dev->mtu); 655 if (err) { 656 dev_err(prestera_dev(sw), "Failed to set port(%u) mtu(%d)\n", 657 id, dev->mtu); 658 goto err_port_init; 659 } 660 661 if (port->fp_id >= PRESTERA_MAC_ADDR_NUM_MAX) { 662 err = -EINVAL; 663 goto err_port_init; 664 } 665 666 eth_hw_addr_gen(dev, sw->base_mac, port->fp_id); 667 /* firmware requires that port's MAC address consist of the first 668 * 5 bytes of the base MAC address 669 */ 670 if (memcmp(dev->dev_addr, sw->base_mac, ETH_ALEN - 1)) { 671 dev_warn(prestera_dev(sw), "Port MAC address wraps for port(%u)\n", id); 672 dev_addr_mod(dev, 0, sw->base_mac, ETH_ALEN - 1); 673 } 674 675 err = prestera_hw_port_mac_set(port, dev->dev_addr); 676 if (err) { 677 dev_err(prestera_dev(sw), "Failed to set port(%u) mac addr\n", id); 678 goto err_port_init; 679 } 680 681 err = prestera_hw_port_cap_get(port, &port->caps); 682 if (err) { 683 dev_err(prestera_dev(sw), "Failed to get port(%u) caps\n", id); 684 goto err_port_init; 685 } 686 687 port->adver_link_modes = port->caps.supp_link_modes; 688 port->adver_fec = 0; 689 port->autoneg = true; 690 691 /* initialize config mac */ 692 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) { 693 cfg_mac.admin = true; 694 cfg_mac.mode = PRESTERA_MAC_MODE_INTERNAL; 695 } else { 696 cfg_mac.admin = false; 697 cfg_mac.mode = PRESTERA_MAC_MODE_MAX; 698 } 699 cfg_mac.inband = 0; 700 cfg_mac.speed = 0; 701 cfg_mac.duplex = DUPLEX_UNKNOWN; 702 cfg_mac.fec = PRESTERA_PORT_FEC_OFF; 703 704 err = prestera_port_cfg_mac_write(port, &cfg_mac); 705 if (err) { 706 dev_err(prestera_dev(sw), 707 "Failed to set port(%u) mac mode\n", id); 708 goto err_port_init; 709 } 710 711 /* initialize config phy (if this is inegral) */ 712 if (port->caps.transceiver != PRESTERA_PORT_TCVR_SFP) { 713 port->cfg_phy.mdix = ETH_TP_MDI_AUTO; 714 port->cfg_phy.admin = false; 715 err = prestera_hw_port_phy_mode_set(port, 716 port->cfg_phy.admin, 717 false, 0, 0, 718 port->cfg_phy.mdix); 719 if (err) { 720 dev_err(prestera_dev(sw), 721 "Failed to set port(%u) phy mode\n", id); 722 goto err_port_init; 723 } 724 } 725 726 err = prestera_rxtx_port_init(port); 727 if (err) 728 goto err_port_init; 729 730 INIT_DELAYED_WORK(&port->cached_hw_stats.caching_dw, 731 &prestera_port_stats_update); 732 733 prestera_port_list_add(port); 734 735 err = register_netdev(dev); 736 if (err) 737 goto err_register_netdev; 738 739 err = prestera_port_sfp_bind(port); 740 if (err) 741 goto err_sfp_bind; 742 743 return 0; 744 745 err_sfp_bind: 746 err_register_netdev: 747 prestera_port_list_del(port); 748 err_port_init: 749 prestera_devlink_port_unregister(port); 750 err_dl_port_register: 751 err_port_info_get: 752 free_netdev(dev); 753 return err; 754 } 755 756 static void prestera_port_destroy(struct prestera_port *port) 757 { 758 struct net_device *dev = port->dev; 759 760 cancel_delayed_work_sync(&port->cached_hw_stats.caching_dw); 761 unregister_netdev(dev); 762 prestera_port_list_del(port); 763 prestera_devlink_port_unregister(port); 764 free_netdev(dev); 765 } 766 767 static void prestera_destroy_ports(struct prestera_switch *sw) 768 { 769 struct prestera_port *port, *tmp; 770 771 list_for_each_entry_safe(port, tmp, &sw->port_list, list) 772 prestera_port_destroy(port); 773 } 774 775 static int prestera_create_ports(struct prestera_switch *sw) 776 { 777 struct prestera_port *port, *tmp; 778 u32 port_idx; 779 int err; 780 781 for (port_idx = 0; port_idx < sw->port_count; port_idx++) { 782 err = prestera_port_create(sw, port_idx); 783 if (err) 784 goto err_port_create; 785 } 786 787 return 0; 788 789 err_port_create: 790 list_for_each_entry_safe(port, tmp, &sw->port_list, list) { 791 prestera_port_sfp_unbind(port); 792 prestera_port_destroy(port); 793 } 794 795 return err; 796 } 797 798 static void prestera_port_handle_event(struct prestera_switch *sw, 799 struct prestera_event *evt, void *arg) 800 { 801 struct prestera_port_mac_state smac; 802 struct prestera_port_event *pevt; 803 struct delayed_work *caching_dw; 804 struct prestera_port *port; 805 806 if (evt->id == PRESTERA_PORT_EVENT_MAC_STATE_CHANGED) { 807 pevt = &evt->port_evt; 808 port = prestera_find_port(sw, pevt->port_id); 809 if (!port || !port->dev) 810 return; 811 812 caching_dw = &port->cached_hw_stats.caching_dw; 813 814 memset(&smac, 0, sizeof(smac)); 815 smac.valid = true; 816 smac.oper = pevt->data.mac.oper; 817 if (smac.oper) { 818 smac.mode = pevt->data.mac.mode; 819 smac.speed = pevt->data.mac.speed; 820 smac.duplex = pevt->data.mac.duplex; 821 smac.fc = pevt->data.mac.fc; 822 smac.fec = pevt->data.mac.fec; 823 } 824 prestera_port_mac_state_cache_write(port, &smac); 825 826 if (port->state_mac.oper) { 827 if (port->phy_link) 828 phylink_mac_change(port->phy_link, true); 829 else 830 netif_carrier_on(port->dev); 831 832 if (!delayed_work_pending(caching_dw)) 833 queue_delayed_work(prestera_wq, caching_dw, 0); 834 } else { 835 if (port->phy_link) 836 phylink_mac_change(port->phy_link, false); 837 else if (netif_running(port->dev) && netif_carrier_ok(port->dev)) 838 netif_carrier_off(port->dev); 839 840 if (delayed_work_pending(caching_dw)) 841 cancel_delayed_work(caching_dw); 842 } 843 } 844 } 845 846 static int prestera_event_handlers_register(struct prestera_switch *sw) 847 { 848 return prestera_hw_event_handler_register(sw, PRESTERA_EVENT_TYPE_PORT, 849 prestera_port_handle_event, 850 NULL); 851 } 852 853 static void prestera_event_handlers_unregister(struct prestera_switch *sw) 854 { 855 prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_PORT, 856 prestera_port_handle_event); 857 } 858 859 static int prestera_switch_set_base_mac_addr(struct prestera_switch *sw) 860 { 861 int ret; 862 863 if (sw->np) 864 ret = of_get_mac_address(sw->np, sw->base_mac); 865 if (!is_valid_ether_addr(sw->base_mac) || ret) { 866 eth_random_addr(sw->base_mac); 867 dev_info(prestera_dev(sw), "using random base mac address\n"); 868 } 869 870 return prestera_hw_switch_mac_set(sw, sw->base_mac); 871 } 872 873 struct prestera_lag *prestera_lag_by_id(struct prestera_switch *sw, u16 id) 874 { 875 return id < sw->lag_max ? &sw->lags[id] : NULL; 876 } 877 878 static struct prestera_lag *prestera_lag_by_dev(struct prestera_switch *sw, 879 struct net_device *dev) 880 { 881 struct prestera_lag *lag; 882 u16 id; 883 884 for (id = 0; id < sw->lag_max; id++) { 885 lag = &sw->lags[id]; 886 if (lag->dev == dev) 887 return lag; 888 } 889 890 return NULL; 891 } 892 893 int prestera_lag_id(struct prestera_switch *sw, 894 struct net_device *lag_dev, u16 *lag_id) 895 { 896 struct prestera_lag *lag; 897 int free_id = -1; 898 int id; 899 900 for (id = 0; id < sw->lag_max; id++) { 901 lag = prestera_lag_by_id(sw, id); 902 if (lag->member_count) { 903 if (lag->dev == lag_dev) { 904 *lag_id = id; 905 return 0; 906 } 907 } else if (free_id < 0) { 908 free_id = id; 909 } 910 } 911 if (free_id < 0) 912 return -ENOSPC; 913 *lag_id = free_id; 914 return 0; 915 } 916 917 static struct prestera_lag *prestera_lag_create(struct prestera_switch *sw, 918 struct net_device *lag_dev) 919 { 920 struct prestera_lag *lag = NULL; 921 u16 id; 922 923 for (id = 0; id < sw->lag_max; id++) { 924 lag = &sw->lags[id]; 925 if (!lag->dev) 926 break; 927 } 928 if (lag) { 929 INIT_LIST_HEAD(&lag->members); 930 lag->dev = lag_dev; 931 } 932 933 return lag; 934 } 935 936 static void prestera_lag_destroy(struct prestera_switch *sw, 937 struct prestera_lag *lag) 938 { 939 WARN_ON(!list_empty(&lag->members)); 940 lag->member_count = 0; 941 lag->dev = NULL; 942 } 943 944 static int prestera_lag_port_add(struct prestera_port *port, 945 struct net_device *lag_dev) 946 { 947 struct prestera_switch *sw = port->sw; 948 struct prestera_lag *lag; 949 int err; 950 951 lag = prestera_lag_by_dev(sw, lag_dev); 952 if (!lag) { 953 lag = prestera_lag_create(sw, lag_dev); 954 if (!lag) 955 return -ENOSPC; 956 } 957 958 if (lag->member_count >= sw->lag_member_max) 959 return -ENOSPC; 960 961 err = prestera_hw_lag_member_add(port, lag->lag_id); 962 if (err) { 963 if (!lag->member_count) 964 prestera_lag_destroy(sw, lag); 965 return err; 966 } 967 968 list_add(&port->lag_member, &lag->members); 969 lag->member_count++; 970 port->lag = lag; 971 972 return 0; 973 } 974 975 static int prestera_lag_port_del(struct prestera_port *port) 976 { 977 struct prestera_switch *sw = port->sw; 978 struct prestera_lag *lag = port->lag; 979 int err; 980 981 if (!lag || !lag->member_count) 982 return -EINVAL; 983 984 err = prestera_hw_lag_member_del(port, lag->lag_id); 985 if (err) 986 return err; 987 988 list_del(&port->lag_member); 989 lag->member_count--; 990 port->lag = NULL; 991 992 if (netif_is_bridge_port(lag->dev)) { 993 struct net_device *br_dev; 994 995 br_dev = netdev_master_upper_dev_get(lag->dev); 996 997 prestera_bridge_port_leave(br_dev, port); 998 } 999 1000 if (!lag->member_count) 1001 prestera_lag_destroy(sw, lag); 1002 1003 return 0; 1004 } 1005 1006 bool prestera_port_is_lag_member(const struct prestera_port *port) 1007 { 1008 return !!port->lag; 1009 } 1010 1011 u16 prestera_port_lag_id(const struct prestera_port *port) 1012 { 1013 return port->lag->lag_id; 1014 } 1015 1016 static int prestera_lag_init(struct prestera_switch *sw) 1017 { 1018 u16 id; 1019 1020 sw->lags = kcalloc(sw->lag_max, sizeof(*sw->lags), GFP_KERNEL); 1021 if (!sw->lags) 1022 return -ENOMEM; 1023 1024 for (id = 0; id < sw->lag_max; id++) 1025 sw->lags[id].lag_id = id; 1026 1027 return 0; 1028 } 1029 1030 static void prestera_lag_fini(struct prestera_switch *sw) 1031 { 1032 u8 idx; 1033 1034 for (idx = 0; idx < sw->lag_max; idx++) 1035 WARN_ON(sw->lags[idx].member_count); 1036 1037 kfree(sw->lags); 1038 } 1039 1040 bool prestera_netdev_check(const struct net_device *dev) 1041 { 1042 return dev->netdev_ops == &prestera_netdev_ops; 1043 } 1044 1045 static int prestera_lower_dev_walk(struct net_device *dev, 1046 struct netdev_nested_priv *priv) 1047 { 1048 struct prestera_port **pport = (struct prestera_port **)priv->data; 1049 1050 if (prestera_netdev_check(dev)) { 1051 *pport = netdev_priv(dev); 1052 return 1; 1053 } 1054 1055 return 0; 1056 } 1057 1058 struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev) 1059 { 1060 struct prestera_port *port = NULL; 1061 struct netdev_nested_priv priv = { 1062 .data = (void *)&port, 1063 }; 1064 1065 if (prestera_netdev_check(dev)) 1066 return netdev_priv(dev); 1067 1068 netdev_walk_all_lower_dev(dev, prestera_lower_dev_walk, &priv); 1069 1070 return port; 1071 } 1072 1073 static int prestera_netdev_port_lower_event(struct net_device *dev, 1074 unsigned long event, void *ptr) 1075 { 1076 struct netdev_notifier_changelowerstate_info *info = ptr; 1077 struct netdev_lag_lower_state_info *lower_state_info; 1078 struct prestera_port *port = netdev_priv(dev); 1079 bool enabled; 1080 1081 if (!netif_is_lag_port(dev)) 1082 return 0; 1083 if (!prestera_port_is_lag_member(port)) 1084 return 0; 1085 1086 lower_state_info = info->lower_state_info; 1087 enabled = lower_state_info->link_up && lower_state_info->tx_enabled; 1088 1089 return prestera_hw_lag_member_enable(port, port->lag->lag_id, enabled); 1090 } 1091 1092 static bool prestera_lag_master_check(struct net_device *lag_dev, 1093 struct netdev_lag_upper_info *info, 1094 struct netlink_ext_ack *ext_ack) 1095 { 1096 if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) { 1097 NL_SET_ERR_MSG_MOD(ext_ack, "Unsupported LAG Tx type"); 1098 return false; 1099 } 1100 1101 return true; 1102 } 1103 1104 static int prestera_netdev_port_event(struct net_device *lower, 1105 struct net_device *dev, 1106 unsigned long event, void *ptr) 1107 { 1108 struct netdev_notifier_info *info = ptr; 1109 struct netdev_notifier_changeupper_info *cu_info; 1110 struct prestera_port *port = netdev_priv(dev); 1111 struct netlink_ext_ack *extack; 1112 struct net_device *upper; 1113 1114 extack = netdev_notifier_info_to_extack(info); 1115 cu_info = container_of(info, 1116 struct netdev_notifier_changeupper_info, 1117 info); 1118 1119 switch (event) { 1120 case NETDEV_PRECHANGEUPPER: 1121 upper = cu_info->upper_dev; 1122 if (!netif_is_bridge_master(upper) && 1123 !netif_is_lag_master(upper)) { 1124 NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type"); 1125 return -EINVAL; 1126 } 1127 1128 if (!cu_info->linking) 1129 break; 1130 1131 if (netdev_has_any_upper_dev(upper)) { 1132 NL_SET_ERR_MSG_MOD(extack, "Upper device is already enslaved"); 1133 return -EINVAL; 1134 } 1135 1136 if (netif_is_lag_master(upper) && 1137 !prestera_lag_master_check(upper, cu_info->upper_info, extack)) 1138 return -EOPNOTSUPP; 1139 if (netif_is_lag_master(upper) && vlan_uses_dev(dev)) { 1140 NL_SET_ERR_MSG_MOD(extack, 1141 "Master device is a LAG master and port has a VLAN"); 1142 return -EINVAL; 1143 } 1144 if (netif_is_lag_port(dev) && is_vlan_dev(upper) && 1145 !netif_is_lag_master(vlan_dev_real_dev(upper))) { 1146 NL_SET_ERR_MSG_MOD(extack, 1147 "Can not put a VLAN on a LAG port"); 1148 return -EINVAL; 1149 } 1150 break; 1151 1152 case NETDEV_CHANGEUPPER: 1153 upper = cu_info->upper_dev; 1154 if (netif_is_bridge_master(upper)) { 1155 if (cu_info->linking) 1156 return prestera_bridge_port_join(upper, port, 1157 extack); 1158 else 1159 prestera_bridge_port_leave(upper, port); 1160 } else if (netif_is_lag_master(upper)) { 1161 if (cu_info->linking) 1162 return prestera_lag_port_add(port, upper); 1163 else 1164 prestera_lag_port_del(port); 1165 } 1166 break; 1167 1168 case NETDEV_CHANGELOWERSTATE: 1169 return prestera_netdev_port_lower_event(dev, event, ptr); 1170 } 1171 1172 return 0; 1173 } 1174 1175 static int prestera_netdevice_lag_event(struct net_device *lag_dev, 1176 unsigned long event, void *ptr) 1177 { 1178 struct net_device *dev; 1179 struct list_head *iter; 1180 int err; 1181 1182 netdev_for_each_lower_dev(lag_dev, dev, iter) { 1183 if (prestera_netdev_check(dev)) { 1184 err = prestera_netdev_port_event(lag_dev, dev, event, 1185 ptr); 1186 if (err) 1187 return err; 1188 } 1189 } 1190 1191 return 0; 1192 } 1193 1194 static int prestera_netdev_event_handler(struct notifier_block *nb, 1195 unsigned long event, void *ptr) 1196 { 1197 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1198 int err = 0; 1199 1200 if (prestera_netdev_check(dev)) 1201 err = prestera_netdev_port_event(dev, dev, event, ptr); 1202 else if (netif_is_lag_master(dev)) 1203 err = prestera_netdevice_lag_event(dev, event, ptr); 1204 1205 return notifier_from_errno(err); 1206 } 1207 1208 struct prestera_mdb_entry * 1209 prestera_mdb_entry_create(struct prestera_switch *sw, 1210 const unsigned char *addr, u16 vid) 1211 { 1212 struct prestera_flood_domain *flood_domain; 1213 struct prestera_mdb_entry *mdb_entry; 1214 1215 mdb_entry = kzalloc(sizeof(*mdb_entry), GFP_KERNEL); 1216 if (!mdb_entry) 1217 goto err_mdb_alloc; 1218 1219 flood_domain = prestera_flood_domain_create(sw); 1220 if (!flood_domain) 1221 goto err_flood_domain_create; 1222 1223 mdb_entry->sw = sw; 1224 mdb_entry->vid = vid; 1225 mdb_entry->flood_domain = flood_domain; 1226 ether_addr_copy(mdb_entry->addr, addr); 1227 1228 if (prestera_hw_mdb_create(mdb_entry)) 1229 goto err_mdb_hw_create; 1230 1231 return mdb_entry; 1232 1233 err_mdb_hw_create: 1234 prestera_flood_domain_destroy(flood_domain); 1235 err_flood_domain_create: 1236 kfree(mdb_entry); 1237 err_mdb_alloc: 1238 return NULL; 1239 } 1240 1241 void prestera_mdb_entry_destroy(struct prestera_mdb_entry *mdb_entry) 1242 { 1243 prestera_hw_mdb_destroy(mdb_entry); 1244 prestera_flood_domain_destroy(mdb_entry->flood_domain); 1245 kfree(mdb_entry); 1246 } 1247 1248 struct prestera_flood_domain * 1249 prestera_flood_domain_create(struct prestera_switch *sw) 1250 { 1251 struct prestera_flood_domain *domain; 1252 1253 domain = kzalloc(sizeof(*domain), GFP_KERNEL); 1254 if (!domain) 1255 return NULL; 1256 1257 domain->sw = sw; 1258 1259 if (prestera_hw_flood_domain_create(domain)) { 1260 kfree(domain); 1261 return NULL; 1262 } 1263 1264 INIT_LIST_HEAD(&domain->flood_domain_port_list); 1265 1266 return domain; 1267 } 1268 1269 void prestera_flood_domain_destroy(struct prestera_flood_domain *flood_domain) 1270 { 1271 WARN_ON(!list_empty(&flood_domain->flood_domain_port_list)); 1272 WARN_ON_ONCE(prestera_hw_flood_domain_destroy(flood_domain)); 1273 kfree(flood_domain); 1274 } 1275 1276 int 1277 prestera_flood_domain_port_create(struct prestera_flood_domain *flood_domain, 1278 struct net_device *dev, 1279 u16 vid) 1280 { 1281 struct prestera_flood_domain_port *flood_domain_port; 1282 bool is_first_port_in_list = false; 1283 int err; 1284 1285 flood_domain_port = kzalloc(sizeof(*flood_domain_port), GFP_KERNEL); 1286 if (!flood_domain_port) { 1287 err = -ENOMEM; 1288 goto err_port_alloc; 1289 } 1290 1291 flood_domain_port->vid = vid; 1292 1293 if (list_empty(&flood_domain->flood_domain_port_list)) 1294 is_first_port_in_list = true; 1295 1296 list_add(&flood_domain_port->flood_domain_port_node, 1297 &flood_domain->flood_domain_port_list); 1298 1299 flood_domain_port->flood_domain = flood_domain; 1300 flood_domain_port->dev = dev; 1301 1302 if (!is_first_port_in_list) { 1303 err = prestera_hw_flood_domain_ports_reset(flood_domain); 1304 if (err) 1305 goto err_prestera_mdb_port_create_hw; 1306 } 1307 1308 err = prestera_hw_flood_domain_ports_set(flood_domain); 1309 if (err) 1310 goto err_prestera_mdb_port_create_hw; 1311 1312 return 0; 1313 1314 err_prestera_mdb_port_create_hw: 1315 list_del(&flood_domain_port->flood_domain_port_node); 1316 kfree(flood_domain_port); 1317 err_port_alloc: 1318 return err; 1319 } 1320 1321 void 1322 prestera_flood_domain_port_destroy(struct prestera_flood_domain_port *port) 1323 { 1324 struct prestera_flood_domain *flood_domain = port->flood_domain; 1325 1326 list_del(&port->flood_domain_port_node); 1327 1328 WARN_ON_ONCE(prestera_hw_flood_domain_ports_reset(flood_domain)); 1329 1330 if (!list_empty(&flood_domain->flood_domain_port_list)) 1331 WARN_ON_ONCE(prestera_hw_flood_domain_ports_set(flood_domain)); 1332 1333 kfree(port); 1334 } 1335 1336 struct prestera_flood_domain_port * 1337 prestera_flood_domain_port_find(struct prestera_flood_domain *flood_domain, 1338 struct net_device *dev, u16 vid) 1339 { 1340 struct prestera_flood_domain_port *flood_domain_port; 1341 1342 list_for_each_entry(flood_domain_port, 1343 &flood_domain->flood_domain_port_list, 1344 flood_domain_port_node) 1345 if (flood_domain_port->dev == dev && 1346 vid == flood_domain_port->vid) 1347 return flood_domain_port; 1348 1349 return NULL; 1350 } 1351 1352 static int prestera_netdev_event_handler_register(struct prestera_switch *sw) 1353 { 1354 sw->netdev_nb.notifier_call = prestera_netdev_event_handler; 1355 1356 return register_netdevice_notifier(&sw->netdev_nb); 1357 } 1358 1359 static void prestera_netdev_event_handler_unregister(struct prestera_switch *sw) 1360 { 1361 unregister_netdevice_notifier(&sw->netdev_nb); 1362 } 1363 1364 static int prestera_switch_init(struct prestera_switch *sw) 1365 { 1366 int err; 1367 1368 sw->np = sw->dev->dev->of_node; 1369 1370 err = prestera_hw_switch_init(sw); 1371 if (err) { 1372 dev_err(prestera_dev(sw), "Failed to init Switch device\n"); 1373 return err; 1374 } 1375 1376 rwlock_init(&sw->port_list_lock); 1377 INIT_LIST_HEAD(&sw->port_list); 1378 1379 err = prestera_switch_set_base_mac_addr(sw); 1380 if (err) 1381 return err; 1382 1383 err = prestera_netdev_event_handler_register(sw); 1384 if (err) 1385 return err; 1386 1387 err = prestera_router_init(sw); 1388 if (err) 1389 goto err_router_init; 1390 1391 err = prestera_switchdev_init(sw); 1392 if (err) 1393 goto err_swdev_register; 1394 1395 err = prestera_rxtx_switch_init(sw); 1396 if (err) 1397 goto err_rxtx_register; 1398 1399 err = prestera_event_handlers_register(sw); 1400 if (err) 1401 goto err_handlers_register; 1402 1403 err = prestera_counter_init(sw); 1404 if (err) 1405 goto err_counter_init; 1406 1407 err = prestera_acl_init(sw); 1408 if (err) 1409 goto err_acl_init; 1410 1411 err = prestera_span_init(sw); 1412 if (err) 1413 goto err_span_init; 1414 1415 err = prestera_devlink_traps_register(sw); 1416 if (err) 1417 goto err_dl_register; 1418 1419 err = prestera_lag_init(sw); 1420 if (err) 1421 goto err_lag_init; 1422 1423 err = prestera_create_ports(sw); 1424 if (err) 1425 goto err_ports_create; 1426 1427 prestera_devlink_register(sw); 1428 return 0; 1429 1430 err_ports_create: 1431 prestera_lag_fini(sw); 1432 err_lag_init: 1433 prestera_devlink_traps_unregister(sw); 1434 err_dl_register: 1435 prestera_span_fini(sw); 1436 err_span_init: 1437 prestera_acl_fini(sw); 1438 err_acl_init: 1439 prestera_counter_fini(sw); 1440 err_counter_init: 1441 prestera_event_handlers_unregister(sw); 1442 err_handlers_register: 1443 prestera_rxtx_switch_fini(sw); 1444 err_rxtx_register: 1445 prestera_switchdev_fini(sw); 1446 err_swdev_register: 1447 prestera_router_fini(sw); 1448 err_router_init: 1449 prestera_netdev_event_handler_unregister(sw); 1450 prestera_hw_switch_fini(sw); 1451 1452 return err; 1453 } 1454 1455 static void prestera_switch_fini(struct prestera_switch *sw) 1456 { 1457 prestera_devlink_unregister(sw); 1458 prestera_destroy_ports(sw); 1459 prestera_lag_fini(sw); 1460 prestera_devlink_traps_unregister(sw); 1461 prestera_span_fini(sw); 1462 prestera_acl_fini(sw); 1463 prestera_counter_fini(sw); 1464 prestera_event_handlers_unregister(sw); 1465 prestera_rxtx_switch_fini(sw); 1466 prestera_switchdev_fini(sw); 1467 prestera_router_fini(sw); 1468 prestera_netdev_event_handler_unregister(sw); 1469 prestera_hw_switch_fini(sw); 1470 of_node_put(sw->np); 1471 } 1472 1473 int prestera_device_register(struct prestera_device *dev) 1474 { 1475 struct prestera_switch *sw; 1476 int err; 1477 1478 sw = prestera_devlink_alloc(dev); 1479 if (!sw) 1480 return -ENOMEM; 1481 1482 dev->priv = sw; 1483 sw->dev = dev; 1484 1485 err = prestera_switch_init(sw); 1486 if (err) { 1487 prestera_devlink_free(sw); 1488 return err; 1489 } 1490 1491 return 0; 1492 } 1493 EXPORT_SYMBOL(prestera_device_register); 1494 1495 void prestera_device_unregister(struct prestera_device *dev) 1496 { 1497 struct prestera_switch *sw = dev->priv; 1498 1499 prestera_switch_fini(sw); 1500 prestera_devlink_free(sw); 1501 } 1502 EXPORT_SYMBOL(prestera_device_unregister); 1503 1504 static int __init prestera_module_init(void) 1505 { 1506 prestera_wq = alloc_workqueue("prestera", 0, 0); 1507 if (!prestera_wq) 1508 return -ENOMEM; 1509 1510 prestera_owq = alloc_ordered_workqueue("prestera_ordered", 0); 1511 if (!prestera_owq) { 1512 destroy_workqueue(prestera_wq); 1513 return -ENOMEM; 1514 } 1515 1516 return 0; 1517 } 1518 1519 static void __exit prestera_module_exit(void) 1520 { 1521 destroy_workqueue(prestera_wq); 1522 destroy_workqueue(prestera_owq); 1523 } 1524 1525 module_init(prestera_module_init); 1526 module_exit(prestera_module_exit); 1527 1528 MODULE_LICENSE("Dual BSD/GPL"); 1529 MODULE_DESCRIPTION("Marvell Prestera switch driver"); 1530