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