drivers/infiniband/hw/cxgb4/provider.c

   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_fifo, php->pdid,
 192                           &rhp->rdev.resource.pdid_fifo_lock);
 193         kfree(php);
 194         return 0;
 195 }
 196
 197 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
 198                                       struct ib_ucontext *context,
 199                                       struct ib_udata *udata)
 200 {
 201         struct c4iw_pd *php;
 202         u32 pdid;
 203         struct c4iw_dev *rhp;
 204
 205         PDBG("%s ibdev %p\n", __func__, ibdev);
 206         rhp = (struct c4iw_dev *) ibdev;
 207         pdid =  c4iw_get_resource(&rhp->rdev.resource.pdid_fifo,
 208                                   &rhp->rdev.resource.pdid_fifo_lock);
 209         if (!pdid)
 210                 return ERR_PTR(-EINVAL);
 211         php = kzalloc(sizeof(*php), GFP_KERNEL);
 212         if (!php) {
 213                 c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, pdid,
 214                                   &rhp->rdev.resource.pdid_fifo_lock);
 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         PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
 226         return &php->ibpd;
 227 }
 228
 229 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 230                            u16 *pkey)
 231 {
 232         PDBG("%s ibdev %p\n", __func__, ibdev);
 233         *pkey = 0;
 234         return 0;
 235 }
 236
 237 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index,
 238                           union ib_gid *gid)
 239 {
 240         struct c4iw_dev *dev;
 241
 242         PDBG("%s ibdev %p, port %d, index %d, gid %p\n",
 243                __func__, ibdev, port, index, gid);
 244         dev = to_c4iw_dev(ibdev);
 245         BUG_ON(port == 0);
 246         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 247         memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6);
 248         return 0;
 249 }
 250
 251 static int c4iw_query_device(struct ib_device *ibdev,
 252                              struct ib_device_attr *props)
 253 {
 254
 255         struct c4iw_dev *dev;
 256         PDBG("%s ibdev %p\n", __func__, ibdev);
 257
 258         dev = to_c4iw_dev(ibdev);
 259         memset(props, 0, sizeof *props);
 260         memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 261         props->hw_ver = dev->rdev.lldi.adapter_type;
 262         props->fw_ver = dev->rdev.lldi.fw_vers;
 263         props->device_cap_flags = dev->device_cap_flags;
 264         props->page_size_cap = T4_PAGESIZE_MASK;
 265         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
 266         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
 267         props->max_mr_size = T4_MAX_MR_SIZE;
 268         props->max_qp = T4_MAX_NUM_QP;
 269         props->max_qp_wr = T4_MAX_QP_DEPTH;
 270         props->max_sge = T4_MAX_RECV_SGE;
 271         props->max_sge_rd = 1;
 272         props->max_qp_rd_atom = c4iw_max_read_depth;
 273         props->max_qp_init_rd_atom = c4iw_max_read_depth;
 274         props->max_cq = T4_MAX_NUM_CQ;
 275         props->max_cqe = T4_MAX_CQ_DEPTH;
 276         props->max_mr = c4iw_num_stags(&dev->rdev);
 277         props->max_pd = T4_MAX_NUM_PD;
 278         props->local_ca_ack_delay = 0;
 279         props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH;
 280
 281         return 0;
 282 }
 283
 284 static int c4iw_query_port(struct ib_device *ibdev, u8 port,
 285                            struct ib_port_attr *props)
 286 {
 287         struct c4iw_dev *dev;
 288         struct net_device *netdev;
 289         struct in_device *inetdev;
 290
 291         PDBG("%s ibdev %p\n", __func__, ibdev);
 292
 293         dev = to_c4iw_dev(ibdev);
 294         netdev = dev->rdev.lldi.ports[port-1];
 295
 296         memset(props, 0, sizeof(struct ib_port_attr));
 297         props->max_mtu = IB_MTU_4096;
 298         if (netdev->mtu >= 4096)
 299                 props->active_mtu = IB_MTU_4096;
 300         else if (netdev->mtu >= 2048)
 301                 props->active_mtu = IB_MTU_2048;
 302         else if (netdev->mtu >= 1024)
 303                 props->active_mtu = IB_MTU_1024;
 304         else if (netdev->mtu >= 512)
 305                 props->active_mtu = IB_MTU_512;
 306         else
 307                 props->active_mtu = IB_MTU_256;
 308
 309         if (!netif_carrier_ok(netdev))
 310                 props->state = IB_PORT_DOWN;
 311         else {
 312                 inetdev = in_dev_get(netdev);
 313                 if (inetdev) {
 314                         if (inetdev->ifa_list)
 315                                 props->state = IB_PORT_ACTIVE;
 316                         else
 317                                 props->state = IB_PORT_INIT;
 318                         in_dev_put(inetdev);
 319                 } else
 320                         props->state = IB_PORT_INIT;
 321         }
 322
 323         props->port_cap_flags =
 324             IB_PORT_CM_SUP |
 325             IB_PORT_SNMP_TUNNEL_SUP |
 326             IB_PORT_REINIT_SUP |
 327             IB_PORT_DEVICE_MGMT_SUP |
 328             IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 329         props->gid_tbl_len = 1;
 330         props->pkey_tbl_len = 1;
 331         props->active_width = 2;
 332         props->active_speed = 2;
 333         props->max_msg_sz = -1;
 334
 335         return 0;
 336 }
 337
 338 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
 339                         char *buf)
 340 {
 341         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 342                                                  ibdev.dev);
 343         PDBG("%s dev 0x%p\n", __func__, dev);
 344         return sprintf(buf, "%d\n", c4iw_dev->rdev.lldi.adapter_type);
 345 }
 346
 347 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
 348                            char *buf)
 349 {
 350         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 351                                                  ibdev.dev);
 352         PDBG("%s dev 0x%p\n", __func__, dev);
 353
 354         return sprintf(buf, "%u.%u.%u.%u\n",
 355                         FW_HDR_FW_VER_MAJOR_GET(c4iw_dev->rdev.lldi.fw_vers),
 356                         FW_HDR_FW_VER_MINOR_GET(c4iw_dev->rdev.lldi.fw_vers),
 357                         FW_HDR_FW_VER_MICRO_GET(c4iw_dev->rdev.lldi.fw_vers),
 358                         FW_HDR_FW_VER_BUILD_GET(c4iw_dev->rdev.lldi.fw_vers));
 359 }
 360
 361 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
 362                         char *buf)
 363 {
 364         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 365                                                  ibdev.dev);
 366         struct ethtool_drvinfo info;
 367         struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
 368
 369         PDBG("%s dev 0x%p\n", __func__, dev);
 370         lldev->ethtool_ops->get_drvinfo(lldev, &info);
 371         return sprintf(buf, "%s\n", info.driver);
 372 }
 373
 374 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
 375                           char *buf)
 376 {
 377         struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
 378                                                  ibdev.dev);
 379         PDBG("%s dev 0x%p\n", __func__, dev);
 380         return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
 381                        c4iw_dev->rdev.lldi.pdev->device);
 382 }
 383
 384 static int c4iw_get_mib(struct ib_device *ibdev,
 385                         union rdma_protocol_stats *stats)
 386 {
 387         struct tp_tcp_stats v4, v6;
 388         struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
 389
 390         cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
 391         memset(stats, 0, sizeof *stats);
 392         stats->iw.tcpInSegs = v4.tcpInSegs + v6.tcpInSegs;
 393         stats->iw.tcpOutSegs = v4.tcpOutSegs + v6.tcpOutSegs;
 394         stats->iw.tcpRetransSegs = v4.tcpRetransSegs + v6.tcpRetransSegs;
 395         stats->iw.tcpOutRsts = v4.tcpOutRsts + v6.tcpOutSegs;
 396
 397         return 0;
 398 }
 399
 400 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
 401 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
 402 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
 403 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
 404
 405 static struct device_attribute *c4iw_class_attributes[] = {
 406         &dev_attr_hw_rev,
 407         &dev_attr_fw_ver,
 408         &dev_attr_hca_type,
 409         &dev_attr_board_id,
 410 };
 411
 412 int c4iw_register_device(struct c4iw_dev *dev)
 413 {
 414         int ret;
 415         int i;
 416
 417         PDBG("%s c4iw_dev %p\n", __func__, dev);
 418         BUG_ON(!dev->rdev.lldi.ports[0]);
 419         strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX);
 420         memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
 421         memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6);
 422         dev->ibdev.owner = THIS_MODULE;
 423         dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
 424         if (fastreg_support)
 425                 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
 426         dev->ibdev.local_dma_lkey = 0;
 427         dev->ibdev.uverbs_cmd_mask =
 428             (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
 429             (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
 430             (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
 431             (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
 432             (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
 433             (1ull << IB_USER_VERBS_CMD_REG_MR) |
 434             (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
 435             (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
 436             (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
 437             (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
 438             (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
 439             (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
 440             (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
 441             (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
 442             (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
 443             (1ull << IB_USER_VERBS_CMD_POST_SEND) |
 444             (1ull << IB_USER_VERBS_CMD_POST_RECV);
 445         dev->ibdev.node_type = RDMA_NODE_RNIC;
 446         memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
 447         dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
 448         dev->ibdev.num_comp_vectors = 1;
 449         dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev);
 450         dev->ibdev.query_device = c4iw_query_device;
 451         dev->ibdev.query_port = c4iw_query_port;
 452         dev->ibdev.query_pkey = c4iw_query_pkey;
 453         dev->ibdev.query_gid = c4iw_query_gid;
 454         dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext;
 455         dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext;
 456         dev->ibdev.mmap = c4iw_mmap;
 457         dev->ibdev.alloc_pd = c4iw_allocate_pd;
 458         dev->ibdev.dealloc_pd = c4iw_deallocate_pd;
 459         dev->ibdev.create_ah = c4iw_ah_create;
 460         dev->ibdev.destroy_ah = c4iw_ah_destroy;
 461         dev->ibdev.create_qp = c4iw_create_qp;
 462         dev->ibdev.modify_qp = c4iw_ib_modify_qp;
 463         dev->ibdev.destroy_qp = c4iw_destroy_qp;
 464         dev->ibdev.create_cq = c4iw_create_cq;
 465         dev->ibdev.destroy_cq = c4iw_destroy_cq;
 466         dev->ibdev.resize_cq = c4iw_resize_cq;
 467         dev->ibdev.poll_cq = c4iw_poll_cq;
 468         dev->ibdev.get_dma_mr = c4iw_get_dma_mr;
 469         dev->ibdev.reg_phys_mr = c4iw_register_phys_mem;
 470         dev->ibdev.rereg_phys_mr = c4iw_reregister_phys_mem;
 471         dev->ibdev.reg_user_mr = c4iw_reg_user_mr;
 472         dev->ibdev.dereg_mr = c4iw_dereg_mr;
 473         dev->ibdev.alloc_mw = c4iw_alloc_mw;
 474         dev->ibdev.bind_mw = c4iw_bind_mw;
 475         dev->ibdev.dealloc_mw = c4iw_dealloc_mw;
 476         dev->ibdev.alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr;
 477         dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl;
 478         dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl;
 479         dev->ibdev.attach_mcast = c4iw_multicast_attach;
 480         dev->ibdev.detach_mcast = c4iw_multicast_detach;
 481         dev->ibdev.process_mad = c4iw_process_mad;
 482         dev->ibdev.req_notify_cq = c4iw_arm_cq;
 483         dev->ibdev.post_send = c4iw_post_send;
 484         dev->ibdev.post_recv = c4iw_post_receive;
 485         dev->ibdev.get_protocol_stats = c4iw_get_mib;
 486         dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
 487
 488         dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 489         if (!dev->ibdev.iwcm)
 490                 return -ENOMEM;
 491
 492         dev->ibdev.iwcm->connect = c4iw_connect;
 493         dev->ibdev.iwcm->accept = c4iw_accept_cr;
 494         dev->ibdev.iwcm->reject = c4iw_reject_cr;
 495         dev->ibdev.iwcm->create_listen = c4iw_create_listen;
 496         dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen;
 497         dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref;
 498         dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref;
 499         dev->ibdev.iwcm->get_qp = c4iw_get_qp;
 500
 501         ret = ib_register_device(&dev->ibdev, NULL);
 502         if (ret)
 503                 goto bail1;
 504
 505         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) {
 506                 ret = device_create_file(&dev->ibdev.dev,
 507                                          c4iw_class_attributes[i]);
 508                 if (ret)
 509                         goto bail2;
 510         }
 511         return 0;
 512 bail2:
 513         ib_unregister_device(&dev->ibdev);
 514 bail1:
 515         kfree(dev->ibdev.iwcm);
 516         return ret;
 517 }
 518
 519 void c4iw_unregister_device(struct c4iw_dev *dev)
 520 {
 521         int i;
 522
 523         PDBG("%s c4iw_dev %p\n", __func__, dev);
 524         for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i)
 525                 device_remove_file(&dev->ibdev.dev,
 526                                    c4iw_class_attributes[i]);
 527         ib_unregister_device(&dev->ibdev);
 528         kfree(dev->ibdev.iwcm);
 529         return;
 530 }