1 /******************************************************************* 2 * This file is part of the Emulex RoCE Device Driver for * 3 * RoCE (RDMA over Converged Ethernet) adapters. * 4 * Copyright (C) 2008-2012 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * * 8 * This program is free software; you can redistribute it and/or * 9 * modify it under the terms of version 2 of the GNU General * 10 * Public License as published by the Free Software Foundation. * 11 * This program is distributed in the hope that it will be useful. * 12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 16 * TO BE LEGALLY INVALID. See the GNU General Public License for * 17 * more details, a copy of which can be found in the file COPYING * 18 * included with this package. * 19 * 20 * Contact Information: 21 * linux-drivers@emulex.com 22 * 23 * Emulex 24 * 3333 Susan Street 25 * Costa Mesa, CA 92626 26 *******************************************************************/ 27 28 #include <linux/module.h> 29 #include <linux/idr.h> 30 #include <rdma/ib_verbs.h> 31 #include <rdma/ib_user_verbs.h> 32 #include <rdma/ib_addr.h> 33 #include <rdma/ib_mad.h> 34 35 #include <linux/netdevice.h> 36 #include <net/addrconf.h> 37 38 #include "ocrdma.h" 39 #include "ocrdma_verbs.h" 40 #include "ocrdma_ah.h" 41 #include "be_roce.h" 42 #include "ocrdma_hw.h" 43 #include "ocrdma_stats.h" 44 #include "ocrdma_abi.h" 45 46 MODULE_VERSION(OCRDMA_ROCE_DRV_VERSION); 47 MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION); 48 MODULE_AUTHOR("Emulex Corporation"); 49 MODULE_LICENSE("GPL"); 50 51 static LIST_HEAD(ocrdma_dev_list); 52 static DEFINE_SPINLOCK(ocrdma_devlist_lock); 53 static DEFINE_IDR(ocrdma_dev_id); 54 55 static union ib_gid ocrdma_zero_sgid; 56 57 void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid) 58 { 59 u8 mac_addr[6]; 60 61 memcpy(&mac_addr[0], &dev->nic_info.mac_addr[0], ETH_ALEN); 62 guid[0] = mac_addr[0] ^ 2; 63 guid[1] = mac_addr[1]; 64 guid[2] = mac_addr[2]; 65 guid[3] = 0xff; 66 guid[4] = 0xfe; 67 guid[5] = mac_addr[3]; 68 guid[6] = mac_addr[4]; 69 guid[7] = mac_addr[5]; 70 } 71 72 static bool ocrdma_add_sgid(struct ocrdma_dev *dev, union ib_gid *new_sgid) 73 { 74 int i; 75 unsigned long flags; 76 77 memset(&ocrdma_zero_sgid, 0, sizeof(union ib_gid)); 78 79 80 spin_lock_irqsave(&dev->sgid_lock, flags); 81 for (i = 0; i < OCRDMA_MAX_SGID; i++) { 82 if (!memcmp(&dev->sgid_tbl[i], &ocrdma_zero_sgid, 83 sizeof(union ib_gid))) { 84 /* found free entry */ 85 memcpy(&dev->sgid_tbl[i], new_sgid, 86 sizeof(union ib_gid)); 87 spin_unlock_irqrestore(&dev->sgid_lock, flags); 88 return true; 89 } else if (!memcmp(&dev->sgid_tbl[i], new_sgid, 90 sizeof(union ib_gid))) { 91 /* entry already present, no addition is required. */ 92 spin_unlock_irqrestore(&dev->sgid_lock, flags); 93 return false; 94 } 95 } 96 spin_unlock_irqrestore(&dev->sgid_lock, flags); 97 return false; 98 } 99 100 static bool ocrdma_del_sgid(struct ocrdma_dev *dev, union ib_gid *sgid) 101 { 102 int found = false; 103 int i; 104 unsigned long flags; 105 106 107 spin_lock_irqsave(&dev->sgid_lock, flags); 108 /* first is default sgid, which cannot be deleted. */ 109 for (i = 1; i < OCRDMA_MAX_SGID; i++) { 110 if (!memcmp(&dev->sgid_tbl[i], sgid, sizeof(union ib_gid))) { 111 /* found matching entry */ 112 memset(&dev->sgid_tbl[i], 0, sizeof(union ib_gid)); 113 found = true; 114 break; 115 } 116 } 117 spin_unlock_irqrestore(&dev->sgid_lock, flags); 118 return found; 119 } 120 121 static int ocrdma_addr_event(unsigned long event, struct net_device *netdev, 122 union ib_gid *gid) 123 { 124 struct ib_event gid_event; 125 struct ocrdma_dev *dev; 126 bool found = false; 127 bool updated = false; 128 bool is_vlan = false; 129 130 is_vlan = netdev->priv_flags & IFF_802_1Q_VLAN; 131 if (is_vlan) 132 netdev = rdma_vlan_dev_real_dev(netdev); 133 134 rcu_read_lock(); 135 list_for_each_entry_rcu(dev, &ocrdma_dev_list, entry) { 136 if (dev->nic_info.netdev == netdev) { 137 found = true; 138 break; 139 } 140 } 141 rcu_read_unlock(); 142 143 if (!found) 144 return NOTIFY_DONE; 145 146 mutex_lock(&dev->dev_lock); 147 switch (event) { 148 case NETDEV_UP: 149 updated = ocrdma_add_sgid(dev, gid); 150 break; 151 case NETDEV_DOWN: 152 updated = ocrdma_del_sgid(dev, gid); 153 break; 154 default: 155 break; 156 } 157 if (updated) { 158 /* GID table updated, notify the consumers about it */ 159 gid_event.device = &dev->ibdev; 160 gid_event.element.port_num = 1; 161 gid_event.event = IB_EVENT_GID_CHANGE; 162 ib_dispatch_event(&gid_event); 163 } 164 mutex_unlock(&dev->dev_lock); 165 return NOTIFY_OK; 166 } 167 168 static int ocrdma_inetaddr_event(struct notifier_block *notifier, 169 unsigned long event, void *ptr) 170 { 171 struct in_ifaddr *ifa = ptr; 172 union ib_gid gid; 173 struct net_device *netdev = ifa->ifa_dev->dev; 174 175 ipv6_addr_set_v4mapped(ifa->ifa_address, (struct in6_addr *)&gid); 176 return ocrdma_addr_event(event, netdev, &gid); 177 } 178 179 static struct notifier_block ocrdma_inetaddr_notifier = { 180 .notifier_call = ocrdma_inetaddr_event 181 }; 182 183 #if IS_ENABLED(CONFIG_IPV6) 184 185 static int ocrdma_inet6addr_event(struct notifier_block *notifier, 186 unsigned long event, void *ptr) 187 { 188 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 189 union ib_gid *gid = (union ib_gid *)&ifa->addr; 190 struct net_device *netdev = ifa->idev->dev; 191 return ocrdma_addr_event(event, netdev, gid); 192 } 193 194 static struct notifier_block ocrdma_inet6addr_notifier = { 195 .notifier_call = ocrdma_inet6addr_event 196 }; 197 198 #endif /* IPV6 and VLAN */ 199 200 static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device, 201 u8 port_num) 202 { 203 return IB_LINK_LAYER_ETHERNET; 204 } 205 206 static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num, 207 struct ib_port_immutable *immutable) 208 { 209 struct ib_port_attr attr; 210 int err; 211 212 err = ocrdma_query_port(ibdev, port_num, &attr); 213 if (err) 214 return err; 215 216 immutable->pkey_tbl_len = attr.pkey_tbl_len; 217 immutable->gid_tbl_len = attr.gid_tbl_len; 218 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE; 219 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 220 221 return 0; 222 } 223 224 static int ocrdma_register_device(struct ocrdma_dev *dev) 225 { 226 strlcpy(dev->ibdev.name, "ocrdma%d", IB_DEVICE_NAME_MAX); 227 ocrdma_get_guid(dev, (u8 *)&dev->ibdev.node_guid); 228 memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC, 229 sizeof(OCRDMA_NODE_DESC)); 230 dev->ibdev.owner = THIS_MODULE; 231 dev->ibdev.uverbs_abi_ver = OCRDMA_ABI_VERSION; 232 dev->ibdev.uverbs_cmd_mask = 233 OCRDMA_UVERBS(GET_CONTEXT) | 234 OCRDMA_UVERBS(QUERY_DEVICE) | 235 OCRDMA_UVERBS(QUERY_PORT) | 236 OCRDMA_UVERBS(ALLOC_PD) | 237 OCRDMA_UVERBS(DEALLOC_PD) | 238 OCRDMA_UVERBS(REG_MR) | 239 OCRDMA_UVERBS(DEREG_MR) | 240 OCRDMA_UVERBS(CREATE_COMP_CHANNEL) | 241 OCRDMA_UVERBS(CREATE_CQ) | 242 OCRDMA_UVERBS(RESIZE_CQ) | 243 OCRDMA_UVERBS(DESTROY_CQ) | 244 OCRDMA_UVERBS(REQ_NOTIFY_CQ) | 245 OCRDMA_UVERBS(CREATE_QP) | 246 OCRDMA_UVERBS(MODIFY_QP) | 247 OCRDMA_UVERBS(QUERY_QP) | 248 OCRDMA_UVERBS(DESTROY_QP) | 249 OCRDMA_UVERBS(POLL_CQ) | 250 OCRDMA_UVERBS(POST_SEND) | 251 OCRDMA_UVERBS(POST_RECV); 252 253 dev->ibdev.uverbs_cmd_mask |= 254 OCRDMA_UVERBS(CREATE_AH) | 255 OCRDMA_UVERBS(MODIFY_AH) | 256 OCRDMA_UVERBS(QUERY_AH) | 257 OCRDMA_UVERBS(DESTROY_AH); 258 259 dev->ibdev.node_type = RDMA_NODE_IB_CA; 260 dev->ibdev.phys_port_cnt = 1; 261 dev->ibdev.num_comp_vectors = dev->eq_cnt; 262 263 /* mandatory verbs. */ 264 dev->ibdev.query_device = ocrdma_query_device; 265 dev->ibdev.query_port = ocrdma_query_port; 266 dev->ibdev.modify_port = ocrdma_modify_port; 267 dev->ibdev.query_gid = ocrdma_query_gid; 268 dev->ibdev.get_link_layer = ocrdma_link_layer; 269 dev->ibdev.alloc_pd = ocrdma_alloc_pd; 270 dev->ibdev.dealloc_pd = ocrdma_dealloc_pd; 271 272 dev->ibdev.create_cq = ocrdma_create_cq; 273 dev->ibdev.destroy_cq = ocrdma_destroy_cq; 274 dev->ibdev.resize_cq = ocrdma_resize_cq; 275 276 dev->ibdev.create_qp = ocrdma_create_qp; 277 dev->ibdev.modify_qp = ocrdma_modify_qp; 278 dev->ibdev.query_qp = ocrdma_query_qp; 279 dev->ibdev.destroy_qp = ocrdma_destroy_qp; 280 281 dev->ibdev.query_pkey = ocrdma_query_pkey; 282 dev->ibdev.create_ah = ocrdma_create_ah; 283 dev->ibdev.destroy_ah = ocrdma_destroy_ah; 284 dev->ibdev.query_ah = ocrdma_query_ah; 285 dev->ibdev.modify_ah = ocrdma_modify_ah; 286 287 dev->ibdev.poll_cq = ocrdma_poll_cq; 288 dev->ibdev.post_send = ocrdma_post_send; 289 dev->ibdev.post_recv = ocrdma_post_recv; 290 dev->ibdev.req_notify_cq = ocrdma_arm_cq; 291 292 dev->ibdev.get_dma_mr = ocrdma_get_dma_mr; 293 dev->ibdev.reg_phys_mr = ocrdma_reg_kernel_mr; 294 dev->ibdev.dereg_mr = ocrdma_dereg_mr; 295 dev->ibdev.reg_user_mr = ocrdma_reg_user_mr; 296 297 dev->ibdev.alloc_fast_reg_mr = ocrdma_alloc_frmr; 298 dev->ibdev.alloc_fast_reg_page_list = ocrdma_alloc_frmr_page_list; 299 dev->ibdev.free_fast_reg_page_list = ocrdma_free_frmr_page_list; 300 301 /* mandatory to support user space verbs consumer. */ 302 dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext; 303 dev->ibdev.dealloc_ucontext = ocrdma_dealloc_ucontext; 304 dev->ibdev.mmap = ocrdma_mmap; 305 dev->ibdev.dma_device = &dev->nic_info.pdev->dev; 306 307 dev->ibdev.process_mad = ocrdma_process_mad; 308 dev->ibdev.get_port_immutable = ocrdma_port_immutable; 309 310 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) { 311 dev->ibdev.uverbs_cmd_mask |= 312 OCRDMA_UVERBS(CREATE_SRQ) | 313 OCRDMA_UVERBS(MODIFY_SRQ) | 314 OCRDMA_UVERBS(QUERY_SRQ) | 315 OCRDMA_UVERBS(DESTROY_SRQ) | 316 OCRDMA_UVERBS(POST_SRQ_RECV); 317 318 dev->ibdev.create_srq = ocrdma_create_srq; 319 dev->ibdev.modify_srq = ocrdma_modify_srq; 320 dev->ibdev.query_srq = ocrdma_query_srq; 321 dev->ibdev.destroy_srq = ocrdma_destroy_srq; 322 dev->ibdev.post_srq_recv = ocrdma_post_srq_recv; 323 } 324 return ib_register_device(&dev->ibdev, NULL); 325 } 326 327 static int ocrdma_alloc_resources(struct ocrdma_dev *dev) 328 { 329 mutex_init(&dev->dev_lock); 330 dev->sgid_tbl = kzalloc(sizeof(union ib_gid) * 331 OCRDMA_MAX_SGID, GFP_KERNEL); 332 if (!dev->sgid_tbl) 333 goto alloc_err; 334 spin_lock_init(&dev->sgid_lock); 335 336 dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq *) * 337 OCRDMA_MAX_CQ, GFP_KERNEL); 338 if (!dev->cq_tbl) 339 goto alloc_err; 340 341 if (dev->attr.max_qp) { 342 dev->qp_tbl = kzalloc(sizeof(struct ocrdma_qp *) * 343 OCRDMA_MAX_QP, GFP_KERNEL); 344 if (!dev->qp_tbl) 345 goto alloc_err; 346 } 347 348 dev->stag_arr = kzalloc(sizeof(u64) * OCRDMA_MAX_STAG, GFP_KERNEL); 349 if (dev->stag_arr == NULL) 350 goto alloc_err; 351 352 ocrdma_alloc_pd_pool(dev); 353 354 spin_lock_init(&dev->av_tbl.lock); 355 spin_lock_init(&dev->flush_q_lock); 356 return 0; 357 alloc_err: 358 pr_err("%s(%d) error.\n", __func__, dev->id); 359 return -ENOMEM; 360 } 361 362 static void ocrdma_free_resources(struct ocrdma_dev *dev) 363 { 364 kfree(dev->stag_arr); 365 kfree(dev->qp_tbl); 366 kfree(dev->cq_tbl); 367 kfree(dev->sgid_tbl); 368 } 369 370 /* OCRDMA sysfs interface */ 371 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 372 char *buf) 373 { 374 struct ocrdma_dev *dev = dev_get_drvdata(device); 375 376 return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor); 377 } 378 379 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 380 char *buf) 381 { 382 struct ocrdma_dev *dev = dev_get_drvdata(device); 383 384 return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->attr.fw_ver[0]); 385 } 386 387 static ssize_t show_hca_type(struct device *device, 388 struct device_attribute *attr, char *buf) 389 { 390 struct ocrdma_dev *dev = dev_get_drvdata(device); 391 392 return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->model_number[0]); 393 } 394 395 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 396 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 397 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL); 398 399 static struct device_attribute *ocrdma_attributes[] = { 400 &dev_attr_hw_rev, 401 &dev_attr_fw_ver, 402 &dev_attr_hca_type 403 }; 404 405 static void ocrdma_remove_sysfiles(struct ocrdma_dev *dev) 406 { 407 int i; 408 409 for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++) 410 device_remove_file(&dev->ibdev.dev, ocrdma_attributes[i]); 411 } 412 413 static void ocrdma_add_default_sgid(struct ocrdma_dev *dev) 414 { 415 /* GID Index 0 - Invariant manufacturer-assigned EUI-64 */ 416 union ib_gid *sgid = &dev->sgid_tbl[0]; 417 418 sgid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 419 ocrdma_get_guid(dev, &sgid->raw[8]); 420 } 421 422 static void ocrdma_init_ipv4_gids(struct ocrdma_dev *dev, 423 struct net_device *net) 424 { 425 struct in_device *in_dev; 426 union ib_gid gid; 427 in_dev = in_dev_get(net); 428 if (in_dev) { 429 for_ifa(in_dev) { 430 ipv6_addr_set_v4mapped(ifa->ifa_address, 431 (struct in6_addr *)&gid); 432 ocrdma_add_sgid(dev, &gid); 433 } 434 endfor_ifa(in_dev); 435 in_dev_put(in_dev); 436 } 437 } 438 439 static void ocrdma_init_ipv6_gids(struct ocrdma_dev *dev, 440 struct net_device *net) 441 { 442 #if IS_ENABLED(CONFIG_IPV6) 443 struct inet6_dev *in6_dev; 444 union ib_gid *pgid; 445 struct inet6_ifaddr *ifp; 446 in6_dev = in6_dev_get(net); 447 if (in6_dev) { 448 read_lock_bh(&in6_dev->lock); 449 list_for_each_entry(ifp, &in6_dev->addr_list, if_list) { 450 pgid = (union ib_gid *)&ifp->addr; 451 ocrdma_add_sgid(dev, pgid); 452 } 453 read_unlock_bh(&in6_dev->lock); 454 in6_dev_put(in6_dev); 455 } 456 #endif 457 } 458 459 static void ocrdma_init_gid_table(struct ocrdma_dev *dev) 460 { 461 struct net_device *net_dev; 462 463 for_each_netdev(&init_net, net_dev) { 464 struct net_device *real_dev = rdma_vlan_dev_real_dev(net_dev) ? 465 rdma_vlan_dev_real_dev(net_dev) : net_dev; 466 467 if (real_dev == dev->nic_info.netdev) { 468 ocrdma_add_default_sgid(dev); 469 ocrdma_init_ipv4_gids(dev, net_dev); 470 ocrdma_init_ipv6_gids(dev, net_dev); 471 } 472 } 473 } 474 475 static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info) 476 { 477 int status = 0, i; 478 struct ocrdma_dev *dev; 479 480 dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev)); 481 if (!dev) { 482 pr_err("Unable to allocate ib device\n"); 483 return NULL; 484 } 485 dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL); 486 if (!dev->mbx_cmd) 487 goto idr_err; 488 489 memcpy(&dev->nic_info, dev_info, sizeof(*dev_info)); 490 dev->id = idr_alloc(&ocrdma_dev_id, NULL, 0, 0, GFP_KERNEL); 491 if (dev->id < 0) 492 goto idr_err; 493 494 status = ocrdma_init_hw(dev); 495 if (status) 496 goto init_err; 497 498 status = ocrdma_alloc_resources(dev); 499 if (status) 500 goto alloc_err; 501 502 ocrdma_init_service_level(dev); 503 ocrdma_init_gid_table(dev); 504 status = ocrdma_register_device(dev); 505 if (status) 506 goto alloc_err; 507 508 for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++) 509 if (device_create_file(&dev->ibdev.dev, ocrdma_attributes[i])) 510 goto sysfs_err; 511 spin_lock(&ocrdma_devlist_lock); 512 list_add_tail_rcu(&dev->entry, &ocrdma_dev_list); 513 spin_unlock(&ocrdma_devlist_lock); 514 /* Init stats */ 515 ocrdma_add_port_stats(dev); 516 /* Interrupt Moderation */ 517 INIT_DELAYED_WORK(&dev->eqd_work, ocrdma_eqd_set_task); 518 schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000)); 519 520 pr_info("%s %s: %s \"%s\" port %d\n", 521 dev_name(&dev->nic_info.pdev->dev), hca_name(dev), 522 port_speed_string(dev), dev->model_number, 523 dev->hba_port_num); 524 pr_info("%s ocrdma%d driver loaded successfully\n", 525 dev_name(&dev->nic_info.pdev->dev), dev->id); 526 return dev; 527 528 sysfs_err: 529 ocrdma_remove_sysfiles(dev); 530 alloc_err: 531 ocrdma_free_resources(dev); 532 ocrdma_cleanup_hw(dev); 533 init_err: 534 idr_remove(&ocrdma_dev_id, dev->id); 535 idr_err: 536 kfree(dev->mbx_cmd); 537 ib_dealloc_device(&dev->ibdev); 538 pr_err("%s() leaving. ret=%d\n", __func__, status); 539 return NULL; 540 } 541 542 static void ocrdma_remove_free(struct rcu_head *rcu) 543 { 544 struct ocrdma_dev *dev = container_of(rcu, struct ocrdma_dev, rcu); 545 546 idr_remove(&ocrdma_dev_id, dev->id); 547 kfree(dev->mbx_cmd); 548 ib_dealloc_device(&dev->ibdev); 549 } 550 551 static void ocrdma_remove(struct ocrdma_dev *dev) 552 { 553 /* first unregister with stack to stop all the active traffic 554 * of the registered clients. 555 */ 556 cancel_delayed_work_sync(&dev->eqd_work); 557 ocrdma_remove_sysfiles(dev); 558 ib_unregister_device(&dev->ibdev); 559 560 ocrdma_rem_port_stats(dev); 561 562 spin_lock(&ocrdma_devlist_lock); 563 list_del_rcu(&dev->entry); 564 spin_unlock(&ocrdma_devlist_lock); 565 566 ocrdma_free_resources(dev); 567 ocrdma_cleanup_hw(dev); 568 569 call_rcu(&dev->rcu, ocrdma_remove_free); 570 } 571 572 static int ocrdma_open(struct ocrdma_dev *dev) 573 { 574 struct ib_event port_event; 575 576 port_event.event = IB_EVENT_PORT_ACTIVE; 577 port_event.element.port_num = 1; 578 port_event.device = &dev->ibdev; 579 ib_dispatch_event(&port_event); 580 return 0; 581 } 582 583 static int ocrdma_close(struct ocrdma_dev *dev) 584 { 585 int i; 586 struct ocrdma_qp *qp, **cur_qp; 587 struct ib_event err_event; 588 struct ib_qp_attr attrs; 589 int attr_mask = IB_QP_STATE; 590 591 attrs.qp_state = IB_QPS_ERR; 592 mutex_lock(&dev->dev_lock); 593 if (dev->qp_tbl) { 594 cur_qp = dev->qp_tbl; 595 for (i = 0; i < OCRDMA_MAX_QP; i++) { 596 qp = cur_qp[i]; 597 if (qp && qp->ibqp.qp_type != IB_QPT_GSI) { 598 /* change the QP state to ERROR */ 599 _ocrdma_modify_qp(&qp->ibqp, &attrs, attr_mask); 600 601 err_event.event = IB_EVENT_QP_FATAL; 602 err_event.element.qp = &qp->ibqp; 603 err_event.device = &dev->ibdev; 604 ib_dispatch_event(&err_event); 605 } 606 } 607 } 608 mutex_unlock(&dev->dev_lock); 609 610 err_event.event = IB_EVENT_PORT_ERR; 611 err_event.element.port_num = 1; 612 err_event.device = &dev->ibdev; 613 ib_dispatch_event(&err_event); 614 return 0; 615 } 616 617 static void ocrdma_shutdown(struct ocrdma_dev *dev) 618 { 619 ocrdma_close(dev); 620 ocrdma_remove(dev); 621 } 622 623 /* event handling via NIC driver ensures that all the NIC specific 624 * initialization done before RoCE driver notifies 625 * event to stack. 626 */ 627 static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event) 628 { 629 switch (event) { 630 case BE_DEV_UP: 631 ocrdma_open(dev); 632 break; 633 case BE_DEV_DOWN: 634 ocrdma_close(dev); 635 break; 636 case BE_DEV_SHUTDOWN: 637 ocrdma_shutdown(dev); 638 break; 639 } 640 } 641 642 static struct ocrdma_driver ocrdma_drv = { 643 .name = "ocrdma_driver", 644 .add = ocrdma_add, 645 .remove = ocrdma_remove, 646 .state_change_handler = ocrdma_event_handler, 647 .be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION, 648 }; 649 650 static void ocrdma_unregister_inet6addr_notifier(void) 651 { 652 #if IS_ENABLED(CONFIG_IPV6) 653 unregister_inet6addr_notifier(&ocrdma_inet6addr_notifier); 654 #endif 655 } 656 657 static void ocrdma_unregister_inetaddr_notifier(void) 658 { 659 unregister_inetaddr_notifier(&ocrdma_inetaddr_notifier); 660 } 661 662 static int __init ocrdma_init_module(void) 663 { 664 int status; 665 666 ocrdma_init_debugfs(); 667 668 status = register_inetaddr_notifier(&ocrdma_inetaddr_notifier); 669 if (status) 670 return status; 671 672 #if IS_ENABLED(CONFIG_IPV6) 673 status = register_inet6addr_notifier(&ocrdma_inet6addr_notifier); 674 if (status) 675 goto err_notifier6; 676 #endif 677 678 status = be_roce_register_driver(&ocrdma_drv); 679 if (status) 680 goto err_be_reg; 681 682 return 0; 683 684 err_be_reg: 685 #if IS_ENABLED(CONFIG_IPV6) 686 ocrdma_unregister_inet6addr_notifier(); 687 err_notifier6: 688 #endif 689 ocrdma_unregister_inetaddr_notifier(); 690 return status; 691 } 692 693 static void __exit ocrdma_exit_module(void) 694 { 695 be_roce_unregister_driver(&ocrdma_drv); 696 ocrdma_unregister_inet6addr_notifier(); 697 ocrdma_unregister_inetaddr_notifier(); 698 ocrdma_rem_debugfs(); 699 idr_destroy(&ocrdma_dev_id); 700 } 701 702 module_init(ocrdma_init_module); 703 module_exit(ocrdma_exit_module); 704