1 /* 2 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #include <linux/module.h> 33 #include <linux/moduleparam.h> 34 #include <linux/device.h> 35 #include <linux/netdevice.h> 36 #include <linux/etherdevice.h> 37 #include <linux/delay.h> 38 #include <linux/errno.h> 39 #include <linux/list.h> 40 #include <linux/spinlock.h> 41 #include <linux/ethtool.h> 42 #include <linux/rtnetlink.h> 43 #include <linux/inetdevice.h> 44 #include <linux/io.h> 45 46 #include <asm/irq.h> 47 #include <asm/byteorder.h> 48 49 #include <rdma/iw_cm.h> 50 #include <rdma/ib_verbs.h> 51 #include <rdma/ib_smi.h> 52 #include <rdma/ib_umem.h> 53 #include <rdma/ib_user_verbs.h> 54 55 #include "iw_cxgb4.h" 56 57 static int fastreg_support = 1; 58 module_param(fastreg_support, int, 0644); 59 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)"); 60 61 static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, 62 struct ib_ah_attr *ah_attr) 63 { 64 return ERR_PTR(-ENOSYS); 65 } 66 67 static int c4iw_ah_destroy(struct ib_ah *ah) 68 { 69 return -ENOSYS; 70 } 71 72 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 73 { 74 return -ENOSYS; 75 } 76 77 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 78 { 79 return -ENOSYS; 80 } 81 82 static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, 83 u8 port_num, struct ib_wc *in_wc, 84 struct ib_grh *in_grh, struct ib_mad *in_mad, 85 struct ib_mad *out_mad) 86 { 87 return -ENOSYS; 88 } 89 90 static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 91 { 92 struct c4iw_dev *rhp = to_c4iw_dev(context->device); 93 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 94 struct c4iw_mm_entry *mm, *tmp; 95 96 PDBG("%s context %p\n", __func__, context); 97 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 98 kfree(mm); 99 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 100 kfree(ucontext); 101 return 0; 102 } 103 104 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 105 struct ib_udata *udata) 106 { 107 struct c4iw_ucontext *context; 108 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 109 110 PDBG("%s ibdev %p\n", __func__, ibdev); 111 context = kzalloc(sizeof(*context), GFP_KERNEL); 112 if (!context) 113 return ERR_PTR(-ENOMEM); 114 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 115 INIT_LIST_HEAD(&context->mmaps); 116 spin_lock_init(&context->mmap_lock); 117 return &context->ibucontext; 118 } 119 120 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 121 { 122 int len = vma->vm_end - vma->vm_start; 123 u32 key = vma->vm_pgoff << PAGE_SHIFT; 124 struct c4iw_rdev *rdev; 125 int ret = 0; 126 struct c4iw_mm_entry *mm; 127 struct c4iw_ucontext *ucontext; 128 u64 addr; 129 130 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff, 131 key, len); 132 133 if (vma->vm_start & (PAGE_SIZE-1)) 134 return -EINVAL; 135 136 rdev = &(to_c4iw_dev(context->device)->rdev); 137 ucontext = to_c4iw_ucontext(context); 138 139 mm = remove_mmap(ucontext, key, len); 140 if (!mm) 141 return -EINVAL; 142 addr = mm->addr; 143 kfree(mm); 144 145 if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) && 146 (addr < (pci_resource_start(rdev->lldi.pdev, 0) + 147 pci_resource_len(rdev->lldi.pdev, 0)))) { 148 149 /* 150 * MA_SYNC register... 151 */ 152 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 153 ret = io_remap_pfn_range(vma, vma->vm_start, 154 addr >> PAGE_SHIFT, 155 len, vma->vm_page_prot); 156 } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) && 157 (addr < (pci_resource_start(rdev->lldi.pdev, 2) + 158 pci_resource_len(rdev->lldi.pdev, 2)))) { 159 160 /* 161 * Map user DB or OCQP memory... 162 */ 163 if (addr >= rdev->oc_mw_pa) 164 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 165 else 166 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 167 ret = io_remap_pfn_range(vma, vma->vm_start, 168 addr >> PAGE_SHIFT, 169 len, vma->vm_page_prot); 170 } else { 171 172 /* 173 * Map WQ or CQ contig dma memory... 174 */ 175 ret = remap_pfn_range(vma, vma->vm_start, 176 addr >> PAGE_SHIFT, 177 len, vma->vm_page_prot); 178 } 179 180 return ret; 181 } 182 183 static int c4iw_deallocate_pd(struct ib_pd *pd) 184 { 185 struct c4iw_dev *rhp; 186 struct c4iw_pd *php; 187 188 php = to_c4iw_pd(pd); 189 rhp = php->rhp; 190 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid); 191 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 192 mutex_lock(&rhp->rdev.stats.lock); 193 rhp->rdev.stats.pd.cur--; 194 mutex_unlock(&rhp->rdev.stats.lock); 195 kfree(php); 196 return 0; 197 } 198 199 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev, 200 struct ib_ucontext *context, 201 struct ib_udata *udata) 202 { 203 struct c4iw_pd *php; 204 u32 pdid; 205 struct c4iw_dev *rhp; 206 207 PDBG("%s ibdev %p\n", __func__, ibdev); 208 rhp = (struct c4iw_dev *) ibdev; 209 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 210 if (!pdid) 211 return ERR_PTR(-EINVAL); 212 php = kzalloc(sizeof(*php), GFP_KERNEL); 213 if (!php) { 214 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); 215 return ERR_PTR(-ENOMEM); 216 } 217 php->pdid = pdid; 218 php->rhp = rhp; 219 if (context) { 220 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 221 c4iw_deallocate_pd(&php->ibpd); 222 return ERR_PTR(-EFAULT); 223 } 224 } 225 mutex_lock(&rhp->rdev.stats.lock); 226 rhp->rdev.stats.pd.cur++; 227 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 228 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 229 mutex_unlock(&rhp->rdev.stats.lock); 230 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php); 231 return &php->ibpd; 232 } 233 234 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 235 u16 *pkey) 236 { 237 PDBG("%s ibdev %p\n", __func__, ibdev); 238 *pkey = 0; 239 return 0; 240 } 241 242 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, 243 union ib_gid *gid) 244 { 245 struct c4iw_dev *dev; 246 247 PDBG("%s ibdev %p, port %d, index %d, gid %p\n", 248 __func__, ibdev, port, index, gid); 249 dev = to_c4iw_dev(ibdev); 250 BUG_ON(port == 0); 251 memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 252 memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6); 253 return 0; 254 } 255 256 static int c4iw_query_device(struct ib_device *ibdev, 257 struct ib_device_attr *props) 258 { 259 260 struct c4iw_dev *dev; 261 PDBG("%s ibdev %p\n", __func__, ibdev); 262 263 dev = to_c4iw_dev(ibdev); 264 memset(props, 0, sizeof *props); 265 memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); 266 props->hw_ver = dev->rdev.lldi.adapter_type; 267 props->fw_ver = dev->rdev.lldi.fw_vers; 268 props->device_cap_flags = dev->device_cap_flags; 269 props->page_size_cap = T4_PAGESIZE_MASK; 270 props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor; 271 props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device; 272 props->max_mr_size = T4_MAX_MR_SIZE; 273 props->max_qp = T4_MAX_NUM_QP; 274 props->max_qp_wr = T4_MAX_QP_DEPTH; 275 props->max_sge = T4_MAX_RECV_SGE; 276 props->max_sge_rd = 1; 277 props->max_qp_rd_atom = c4iw_max_read_depth; 278 props->max_qp_init_rd_atom = c4iw_max_read_depth; 279 props->max_cq = T4_MAX_NUM_CQ; 280 props->max_cqe = T4_MAX_CQ_DEPTH; 281 props->max_mr = c4iw_num_stags(&dev->rdev); 282 props->max_pd = T4_MAX_NUM_PD; 283 props->local_ca_ack_delay = 0; 284 props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH; 285 286 return 0; 287 } 288 289 static int c4iw_query_port(struct ib_device *ibdev, u8 port, 290 struct ib_port_attr *props) 291 { 292 struct c4iw_dev *dev; 293 struct net_device *netdev; 294 struct in_device *inetdev; 295 296 PDBG("%s ibdev %p\n", __func__, ibdev); 297 298 dev = to_c4iw_dev(ibdev); 299 netdev = dev->rdev.lldi.ports[port-1]; 300 301 memset(props, 0, sizeof(struct ib_port_attr)); 302 props->max_mtu = IB_MTU_4096; 303 if (netdev->mtu >= 4096) 304 props->active_mtu = IB_MTU_4096; 305 else if (netdev->mtu >= 2048) 306 props->active_mtu = IB_MTU_2048; 307 else if (netdev->mtu >= 1024) 308 props->active_mtu = IB_MTU_1024; 309 else if (netdev->mtu >= 512) 310 props->active_mtu = IB_MTU_512; 311 else 312 props->active_mtu = IB_MTU_256; 313 314 if (!netif_carrier_ok(netdev)) 315 props->state = IB_PORT_DOWN; 316 else { 317 inetdev = in_dev_get(netdev); 318 if (inetdev) { 319 if (inetdev->ifa_list) 320 props->state = IB_PORT_ACTIVE; 321 else 322 props->state = IB_PORT_INIT; 323 in_dev_put(inetdev); 324 } else 325 props->state = IB_PORT_INIT; 326 } 327 328 props->port_cap_flags = 329 IB_PORT_CM_SUP | 330 IB_PORT_SNMP_TUNNEL_SUP | 331 IB_PORT_REINIT_SUP | 332 IB_PORT_DEVICE_MGMT_SUP | 333 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 334 props->gid_tbl_len = 1; 335 props->pkey_tbl_len = 1; 336 props->active_width = 2; 337 props->active_speed = IB_SPEED_DDR; 338 props->max_msg_sz = -1; 339 340 return 0; 341 } 342 343 static ssize_t show_rev(struct device *dev, struct device_attribute *attr, 344 char *buf) 345 { 346 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 347 ibdev.dev); 348 PDBG("%s dev 0x%p\n", __func__, dev); 349 return sprintf(buf, "%d\n", c4iw_dev->rdev.lldi.adapter_type); 350 } 351 352 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, 353 char *buf) 354 { 355 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 356 ibdev.dev); 357 PDBG("%s dev 0x%p\n", __func__, dev); 358 359 return sprintf(buf, "%u.%u.%u.%u\n", 360 FW_HDR_FW_VER_MAJOR_GET(c4iw_dev->rdev.lldi.fw_vers), 361 FW_HDR_FW_VER_MINOR_GET(c4iw_dev->rdev.lldi.fw_vers), 362 FW_HDR_FW_VER_MICRO_GET(c4iw_dev->rdev.lldi.fw_vers), 363 FW_HDR_FW_VER_BUILD_GET(c4iw_dev->rdev.lldi.fw_vers)); 364 } 365 366 static ssize_t show_hca(struct device *dev, struct device_attribute *attr, 367 char *buf) 368 { 369 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 370 ibdev.dev); 371 struct ethtool_drvinfo info; 372 struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0]; 373 374 PDBG("%s dev 0x%p\n", __func__, dev); 375 lldev->ethtool_ops->get_drvinfo(lldev, &info); 376 return sprintf(buf, "%s\n", info.driver); 377 } 378 379 static ssize_t show_board(struct device *dev, struct device_attribute *attr, 380 char *buf) 381 { 382 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 383 ibdev.dev); 384 PDBG("%s dev 0x%p\n", __func__, dev); 385 return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor, 386 c4iw_dev->rdev.lldi.pdev->device); 387 } 388 389 static int c4iw_get_mib(struct ib_device *ibdev, 390 union rdma_protocol_stats *stats) 391 { 392 struct tp_tcp_stats v4, v6; 393 struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev); 394 395 cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6); 396 memset(stats, 0, sizeof *stats); 397 stats->iw.tcpInSegs = v4.tcpInSegs + v6.tcpInSegs; 398 stats->iw.tcpOutSegs = v4.tcpOutSegs + v6.tcpOutSegs; 399 stats->iw.tcpRetransSegs = v4.tcpRetransSegs + v6.tcpRetransSegs; 400 stats->iw.tcpOutRsts = v4.tcpOutRsts + v6.tcpOutSegs; 401 402 return 0; 403 } 404 405 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 406 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 407 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 408 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 409 410 static struct device_attribute *c4iw_class_attributes[] = { 411 &dev_attr_hw_rev, 412 &dev_attr_fw_ver, 413 &dev_attr_hca_type, 414 &dev_attr_board_id, 415 }; 416 417 int c4iw_register_device(struct c4iw_dev *dev) 418 { 419 int ret; 420 int i; 421 422 PDBG("%s c4iw_dev %p\n", __func__, dev); 423 BUG_ON(!dev->rdev.lldi.ports[0]); 424 strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX); 425 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); 426 memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); 427 dev->ibdev.owner = THIS_MODULE; 428 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 429 if (fastreg_support) 430 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 431 dev->ibdev.local_dma_lkey = 0; 432 dev->ibdev.uverbs_cmd_mask = 433 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 434 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 435 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 436 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 437 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 438 (1ull << IB_USER_VERBS_CMD_REG_MR) | 439 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 440 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 441 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 442 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 443 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 444 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 445 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 446 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 447 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 448 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 449 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 450 (1ull << IB_USER_VERBS_CMD_POST_RECV); 451 dev->ibdev.node_type = RDMA_NODE_RNIC; 452 memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC)); 453 dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports; 454 dev->ibdev.num_comp_vectors = 1; 455 dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev); 456 dev->ibdev.query_device = c4iw_query_device; 457 dev->ibdev.query_port = c4iw_query_port; 458 dev->ibdev.query_pkey = c4iw_query_pkey; 459 dev->ibdev.query_gid = c4iw_query_gid; 460 dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext; 461 dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext; 462 dev->ibdev.mmap = c4iw_mmap; 463 dev->ibdev.alloc_pd = c4iw_allocate_pd; 464 dev->ibdev.dealloc_pd = c4iw_deallocate_pd; 465 dev->ibdev.create_ah = c4iw_ah_create; 466 dev->ibdev.destroy_ah = c4iw_ah_destroy; 467 dev->ibdev.create_qp = c4iw_create_qp; 468 dev->ibdev.modify_qp = c4iw_ib_modify_qp; 469 dev->ibdev.query_qp = c4iw_ib_query_qp; 470 dev->ibdev.destroy_qp = c4iw_destroy_qp; 471 dev->ibdev.create_cq = c4iw_create_cq; 472 dev->ibdev.destroy_cq = c4iw_destroy_cq; 473 dev->ibdev.resize_cq = c4iw_resize_cq; 474 dev->ibdev.poll_cq = c4iw_poll_cq; 475 dev->ibdev.get_dma_mr = c4iw_get_dma_mr; 476 dev->ibdev.reg_phys_mr = c4iw_register_phys_mem; 477 dev->ibdev.rereg_phys_mr = c4iw_reregister_phys_mem; 478 dev->ibdev.reg_user_mr = c4iw_reg_user_mr; 479 dev->ibdev.dereg_mr = c4iw_dereg_mr; 480 dev->ibdev.alloc_mw = c4iw_alloc_mw; 481 dev->ibdev.bind_mw = c4iw_bind_mw; 482 dev->ibdev.dealloc_mw = c4iw_dealloc_mw; 483 dev->ibdev.alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; 484 dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; 485 dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl; 486 dev->ibdev.attach_mcast = c4iw_multicast_attach; 487 dev->ibdev.detach_mcast = c4iw_multicast_detach; 488 dev->ibdev.process_mad = c4iw_process_mad; 489 dev->ibdev.req_notify_cq = c4iw_arm_cq; 490 dev->ibdev.post_send = c4iw_post_send; 491 dev->ibdev.post_recv = c4iw_post_receive; 492 dev->ibdev.get_protocol_stats = c4iw_get_mib; 493 dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 494 495 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL); 496 if (!dev->ibdev.iwcm) 497 return -ENOMEM; 498 499 dev->ibdev.iwcm->connect = c4iw_connect; 500 dev->ibdev.iwcm->accept = c4iw_accept_cr; 501 dev->ibdev.iwcm->reject = c4iw_reject_cr; 502 dev->ibdev.iwcm->create_listen = c4iw_create_listen; 503 dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen; 504 dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref; 505 dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref; 506 dev->ibdev.iwcm->get_qp = c4iw_get_qp; 507 508 ret = ib_register_device(&dev->ibdev, NULL); 509 if (ret) 510 goto bail1; 511 512 for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) { 513 ret = device_create_file(&dev->ibdev.dev, 514 c4iw_class_attributes[i]); 515 if (ret) 516 goto bail2; 517 } 518 return 0; 519 bail2: 520 ib_unregister_device(&dev->ibdev); 521 bail1: 522 kfree(dev->ibdev.iwcm); 523 return ret; 524 } 525 526 void c4iw_unregister_device(struct c4iw_dev *dev) 527 { 528 int i; 529 530 PDBG("%s c4iw_dev %p\n", __func__, dev); 531 for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) 532 device_remove_file(&dev->ibdev.dev, 533 c4iw_class_attributes[i]); 534 ib_unregister_device(&dev->ibdev); 535 kfree(dev->ibdev.iwcm); 536 return; 537 } 538