Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. |
| 3 | * Copyright (c) 2005 Cisco Systems. All rights reserved. |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 4 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 5 | * |
| 6 | * This software is available to you under a choice of one of two |
| 7 | * licenses. You may choose to be licensed under the terms of the GNU |
| 8 | * General Public License (GPL) Version 2, available from the file |
| 9 | * COPYING in the main directory of this source tree, or the |
| 10 | * OpenIB.org BSD license below: |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or |
| 13 | * without modification, are permitted provided that the following |
| 14 | * conditions are met: |
| 15 | * |
| 16 | * - Redistributions of source code must retain the above |
| 17 | * copyright notice, this list of conditions and the following |
| 18 | * disclaimer. |
| 19 | * |
| 20 | * - Redistributions in binary form must reproduce the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer in the documentation and/or other materials |
| 23 | * provided with the distribution. |
| 24 | * |
| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 32 | * SOFTWARE. |
| 33 | * |
| 34 | * $Id: uverbs_cmd.c 2708 2005-06-24 17:27:21Z roland $ |
| 35 | */ |
| 36 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 37 | #include <linux/file.h> |
Roland Dreier | 70a30e1 | 2005-10-28 15:38:26 -0700 | [diff] [blame] | 38 | #include <linux/fs.h> |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 39 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 40 | #include <asm/uaccess.h> |
| 41 | |
| 42 | #include "uverbs.h" |
| 43 | |
| 44 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
| 45 | do { \ |
| 46 | (udata)->inbuf = (void __user *) (ibuf); \ |
| 47 | (udata)->outbuf = (void __user *) (obuf); \ |
| 48 | (udata)->inlen = (ilen); \ |
| 49 | (udata)->outlen = (olen); \ |
| 50 | } while (0) |
| 51 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 52 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
| 53 | const char __user *buf, |
| 54 | int in_len, int out_len) |
| 55 | { |
| 56 | struct ib_uverbs_get_context cmd; |
| 57 | struct ib_uverbs_get_context_resp resp; |
| 58 | struct ib_udata udata; |
| 59 | struct ib_device *ibdev = file->device->ib_dev; |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 60 | struct ib_ucontext *ucontext; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 61 | struct file *filp; |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 62 | int ret; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 63 | |
| 64 | if (out_len < sizeof resp) |
| 65 | return -ENOSPC; |
| 66 | |
| 67 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 68 | return -EFAULT; |
| 69 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 70 | down(&file->mutex); |
| 71 | |
| 72 | if (file->ucontext) { |
| 73 | ret = -EINVAL; |
| 74 | goto err; |
| 75 | } |
| 76 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 77 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 78 | (unsigned long) cmd.response + sizeof resp, |
| 79 | in_len - sizeof cmd, out_len - sizeof resp); |
| 80 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 81 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
| 82 | if (IS_ERR(ucontext)) |
| 83 | return PTR_ERR(file->ucontext); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 84 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 85 | ucontext->device = ibdev; |
| 86 | INIT_LIST_HEAD(&ucontext->pd_list); |
| 87 | INIT_LIST_HEAD(&ucontext->mr_list); |
| 88 | INIT_LIST_HEAD(&ucontext->mw_list); |
| 89 | INIT_LIST_HEAD(&ucontext->cq_list); |
| 90 | INIT_LIST_HEAD(&ucontext->qp_list); |
| 91 | INIT_LIST_HEAD(&ucontext->srq_list); |
| 92 | INIT_LIST_HEAD(&ucontext->ah_list); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 93 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 94 | resp.num_comp_vectors = file->device->num_comp_vectors; |
| 95 | |
| 96 | filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); |
| 97 | if (IS_ERR(filp)) { |
| 98 | ret = PTR_ERR(filp); |
| 99 | goto err_free; |
| 100 | } |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 101 | |
| 102 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 103 | &resp, sizeof resp)) { |
| 104 | ret = -EFAULT; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 105 | goto err_file; |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 106 | } |
| 107 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 108 | file->async_file = filp->private_data; |
| 109 | |
| 110 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, |
| 111 | ib_uverbs_event_handler); |
| 112 | ret = ib_register_event_handler(&file->event_handler); |
| 113 | if (ret) |
| 114 | goto err_file; |
| 115 | |
| 116 | kref_get(&file->async_file->ref); |
| 117 | kref_get(&file->ref); |
Roland Dreier | 70a30e1 | 2005-10-28 15:38:26 -0700 | [diff] [blame] | 118 | file->ucontext = ucontext; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 119 | |
| 120 | fd_install(resp.async_fd, filp); |
| 121 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 122 | up(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 123 | |
| 124 | return in_len; |
| 125 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 126 | err_file: |
| 127 | put_unused_fd(resp.async_fd); |
| 128 | fput(filp); |
| 129 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 130 | err_free: |
| 131 | ibdev->dealloc_ucontext(ucontext); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 132 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 133 | err: |
| 134 | up(&file->mutex); |
| 135 | return ret; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, |
| 139 | const char __user *buf, |
| 140 | int in_len, int out_len) |
| 141 | { |
| 142 | struct ib_uverbs_query_device cmd; |
| 143 | struct ib_uverbs_query_device_resp resp; |
| 144 | struct ib_device_attr attr; |
| 145 | int ret; |
| 146 | |
| 147 | if (out_len < sizeof resp) |
| 148 | return -ENOSPC; |
| 149 | |
| 150 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 151 | return -EFAULT; |
| 152 | |
| 153 | ret = ib_query_device(file->device->ib_dev, &attr); |
| 154 | if (ret) |
| 155 | return ret; |
| 156 | |
| 157 | memset(&resp, 0, sizeof resp); |
| 158 | |
| 159 | resp.fw_ver = attr.fw_ver; |
| 160 | resp.node_guid = attr.node_guid; |
| 161 | resp.sys_image_guid = attr.sys_image_guid; |
| 162 | resp.max_mr_size = attr.max_mr_size; |
| 163 | resp.page_size_cap = attr.page_size_cap; |
| 164 | resp.vendor_id = attr.vendor_id; |
| 165 | resp.vendor_part_id = attr.vendor_part_id; |
| 166 | resp.hw_ver = attr.hw_ver; |
| 167 | resp.max_qp = attr.max_qp; |
| 168 | resp.max_qp_wr = attr.max_qp_wr; |
| 169 | resp.device_cap_flags = attr.device_cap_flags; |
| 170 | resp.max_sge = attr.max_sge; |
| 171 | resp.max_sge_rd = attr.max_sge_rd; |
| 172 | resp.max_cq = attr.max_cq; |
| 173 | resp.max_cqe = attr.max_cqe; |
| 174 | resp.max_mr = attr.max_mr; |
| 175 | resp.max_pd = attr.max_pd; |
| 176 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; |
| 177 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; |
| 178 | resp.max_res_rd_atom = attr.max_res_rd_atom; |
| 179 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; |
| 180 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; |
| 181 | resp.atomic_cap = attr.atomic_cap; |
| 182 | resp.max_ee = attr.max_ee; |
| 183 | resp.max_rdd = attr.max_rdd; |
| 184 | resp.max_mw = attr.max_mw; |
| 185 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; |
| 186 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; |
| 187 | resp.max_mcast_grp = attr.max_mcast_grp; |
| 188 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; |
| 189 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; |
| 190 | resp.max_ah = attr.max_ah; |
| 191 | resp.max_fmr = attr.max_fmr; |
| 192 | resp.max_map_per_fmr = attr.max_map_per_fmr; |
| 193 | resp.max_srq = attr.max_srq; |
| 194 | resp.max_srq_wr = attr.max_srq_wr; |
| 195 | resp.max_srq_sge = attr.max_srq_sge; |
| 196 | resp.max_pkeys = attr.max_pkeys; |
| 197 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; |
| 198 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; |
| 199 | |
| 200 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 201 | &resp, sizeof resp)) |
| 202 | return -EFAULT; |
| 203 | |
| 204 | return in_len; |
| 205 | } |
| 206 | |
| 207 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, |
| 208 | const char __user *buf, |
| 209 | int in_len, int out_len) |
| 210 | { |
| 211 | struct ib_uverbs_query_port cmd; |
| 212 | struct ib_uverbs_query_port_resp resp; |
| 213 | struct ib_port_attr attr; |
| 214 | int ret; |
| 215 | |
| 216 | if (out_len < sizeof resp) |
| 217 | return -ENOSPC; |
| 218 | |
| 219 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 220 | return -EFAULT; |
| 221 | |
| 222 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); |
| 223 | if (ret) |
| 224 | return ret; |
| 225 | |
| 226 | memset(&resp, 0, sizeof resp); |
| 227 | |
| 228 | resp.state = attr.state; |
| 229 | resp.max_mtu = attr.max_mtu; |
| 230 | resp.active_mtu = attr.active_mtu; |
| 231 | resp.gid_tbl_len = attr.gid_tbl_len; |
| 232 | resp.port_cap_flags = attr.port_cap_flags; |
| 233 | resp.max_msg_sz = attr.max_msg_sz; |
| 234 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; |
| 235 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; |
| 236 | resp.pkey_tbl_len = attr.pkey_tbl_len; |
| 237 | resp.lid = attr.lid; |
| 238 | resp.sm_lid = attr.sm_lid; |
| 239 | resp.lmc = attr.lmc; |
| 240 | resp.max_vl_num = attr.max_vl_num; |
| 241 | resp.sm_sl = attr.sm_sl; |
| 242 | resp.subnet_timeout = attr.subnet_timeout; |
| 243 | resp.init_type_reply = attr.init_type_reply; |
| 244 | resp.active_width = attr.active_width; |
| 245 | resp.active_speed = attr.active_speed; |
| 246 | resp.phys_state = attr.phys_state; |
| 247 | |
| 248 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 249 | &resp, sizeof resp)) |
| 250 | return -EFAULT; |
| 251 | |
| 252 | return in_len; |
| 253 | } |
| 254 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 255 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
| 256 | const char __user *buf, |
| 257 | int in_len, int out_len) |
| 258 | { |
| 259 | struct ib_uverbs_alloc_pd cmd; |
| 260 | struct ib_uverbs_alloc_pd_resp resp; |
| 261 | struct ib_udata udata; |
| 262 | struct ib_uobject *uobj; |
| 263 | struct ib_pd *pd; |
| 264 | int ret; |
| 265 | |
| 266 | if (out_len < sizeof resp) |
| 267 | return -ENOSPC; |
| 268 | |
| 269 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 270 | return -EFAULT; |
| 271 | |
| 272 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 273 | (unsigned long) cmd.response + sizeof resp, |
| 274 | in_len - sizeof cmd, out_len - sizeof resp); |
| 275 | |
| 276 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 277 | if (!uobj) |
| 278 | return -ENOMEM; |
| 279 | |
| 280 | uobj->context = file->ucontext; |
| 281 | |
| 282 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, |
| 283 | file->ucontext, &udata); |
| 284 | if (IS_ERR(pd)) { |
| 285 | ret = PTR_ERR(pd); |
| 286 | goto err; |
| 287 | } |
| 288 | |
| 289 | pd->device = file->device->ib_dev; |
| 290 | pd->uobject = uobj; |
| 291 | atomic_set(&pd->usecnt, 0); |
| 292 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 293 | down(&ib_uverbs_idr_mutex); |
| 294 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 295 | retry: |
| 296 | if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) { |
| 297 | ret = -ENOMEM; |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 298 | goto err_up; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 299 | } |
| 300 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 301 | ret = idr_get_new(&ib_uverbs_pd_idr, pd, &uobj->id); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 302 | |
| 303 | if (ret == -EAGAIN) |
| 304 | goto retry; |
| 305 | if (ret) |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 306 | goto err_up; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 307 | |
| 308 | memset(&resp, 0, sizeof resp); |
| 309 | resp.pd_handle = uobj->id; |
| 310 | |
| 311 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 312 | &resp, sizeof resp)) { |
| 313 | ret = -EFAULT; |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 314 | goto err_idr; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 315 | } |
| 316 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 317 | down(&file->mutex); |
| 318 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
| 319 | up(&file->mutex); |
| 320 | |
| 321 | up(&ib_uverbs_idr_mutex); |
| 322 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 323 | return in_len; |
| 324 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 325 | err_idr: |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 326 | idr_remove(&ib_uverbs_pd_idr, uobj->id); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 327 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 328 | err_up: |
| 329 | up(&ib_uverbs_idr_mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 330 | ib_dealloc_pd(pd); |
| 331 | |
| 332 | err: |
| 333 | kfree(uobj); |
| 334 | return ret; |
| 335 | } |
| 336 | |
| 337 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, |
| 338 | const char __user *buf, |
| 339 | int in_len, int out_len) |
| 340 | { |
| 341 | struct ib_uverbs_dealloc_pd cmd; |
| 342 | struct ib_pd *pd; |
| 343 | struct ib_uobject *uobj; |
| 344 | int ret = -EINVAL; |
| 345 | |
| 346 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 347 | return -EFAULT; |
| 348 | |
| 349 | down(&ib_uverbs_idr_mutex); |
| 350 | |
| 351 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| 352 | if (!pd || pd->uobject->context != file->ucontext) |
| 353 | goto out; |
| 354 | |
| 355 | uobj = pd->uobject; |
| 356 | |
| 357 | ret = ib_dealloc_pd(pd); |
| 358 | if (ret) |
| 359 | goto out; |
| 360 | |
| 361 | idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle); |
| 362 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 363 | down(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 364 | list_del(&uobj->list); |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 365 | up(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 366 | |
| 367 | kfree(uobj); |
| 368 | |
| 369 | out: |
| 370 | up(&ib_uverbs_idr_mutex); |
| 371 | |
| 372 | return ret ? ret : in_len; |
| 373 | } |
| 374 | |
| 375 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
| 376 | const char __user *buf, int in_len, |
| 377 | int out_len) |
| 378 | { |
| 379 | struct ib_uverbs_reg_mr cmd; |
| 380 | struct ib_uverbs_reg_mr_resp resp; |
| 381 | struct ib_udata udata; |
| 382 | struct ib_umem_object *obj; |
| 383 | struct ib_pd *pd; |
| 384 | struct ib_mr *mr; |
| 385 | int ret; |
| 386 | |
| 387 | if (out_len < sizeof resp) |
| 388 | return -ENOSPC; |
| 389 | |
| 390 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 391 | return -EFAULT; |
| 392 | |
| 393 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 394 | (unsigned long) cmd.response + sizeof resp, |
| 395 | in_len - sizeof cmd, out_len - sizeof resp); |
| 396 | |
| 397 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) |
| 398 | return -EINVAL; |
| 399 | |
Roland Dreier | f575394 | 2005-10-03 09:18:02 -0700 | [diff] [blame] | 400 | /* |
| 401 | * Local write permission is required if remote write or |
| 402 | * remote atomic permission is also requested. |
| 403 | */ |
| 404 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && |
| 405 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) |
| 406 | return -EINVAL; |
| 407 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 408 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| 409 | if (!obj) |
| 410 | return -ENOMEM; |
| 411 | |
| 412 | obj->uobject.context = file->ucontext; |
| 413 | |
| 414 | /* |
| 415 | * We ask for writable memory if any access flags other than |
| 416 | * "remote read" are set. "Local write" and "remote write" |
| 417 | * obviously require write access. "Remote atomic" can do |
| 418 | * things like fetch and add, which will modify memory, and |
| 419 | * "MW bind" can change permissions by binding a window. |
| 420 | */ |
| 421 | ret = ib_umem_get(file->device->ib_dev, &obj->umem, |
| 422 | (void *) (unsigned long) cmd.start, cmd.length, |
| 423 | !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); |
| 424 | if (ret) |
| 425 | goto err_free; |
| 426 | |
| 427 | obj->umem.virt_base = cmd.hca_va; |
| 428 | |
| 429 | down(&ib_uverbs_idr_mutex); |
| 430 | |
| 431 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| 432 | if (!pd || pd->uobject->context != file->ucontext) { |
| 433 | ret = -EINVAL; |
| 434 | goto err_up; |
| 435 | } |
| 436 | |
| 437 | if (!pd->device->reg_user_mr) { |
| 438 | ret = -ENOSYS; |
| 439 | goto err_up; |
| 440 | } |
| 441 | |
| 442 | mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); |
| 443 | if (IS_ERR(mr)) { |
| 444 | ret = PTR_ERR(mr); |
| 445 | goto err_up; |
| 446 | } |
| 447 | |
| 448 | mr->device = pd->device; |
| 449 | mr->pd = pd; |
| 450 | mr->uobject = &obj->uobject; |
| 451 | atomic_inc(&pd->usecnt); |
| 452 | atomic_set(&mr->usecnt, 0); |
| 453 | |
| 454 | memset(&resp, 0, sizeof resp); |
| 455 | resp.lkey = mr->lkey; |
| 456 | resp.rkey = mr->rkey; |
| 457 | |
| 458 | retry: |
| 459 | if (!idr_pre_get(&ib_uverbs_mr_idr, GFP_KERNEL)) { |
| 460 | ret = -ENOMEM; |
| 461 | goto err_unreg; |
| 462 | } |
| 463 | |
| 464 | ret = idr_get_new(&ib_uverbs_mr_idr, mr, &obj->uobject.id); |
| 465 | |
| 466 | if (ret == -EAGAIN) |
| 467 | goto retry; |
| 468 | if (ret) |
| 469 | goto err_unreg; |
| 470 | |
| 471 | resp.mr_handle = obj->uobject.id; |
| 472 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 473 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 474 | &resp, sizeof resp)) { |
| 475 | ret = -EFAULT; |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 476 | goto err_idr; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 477 | } |
| 478 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 479 | down(&file->mutex); |
| 480 | list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
| 481 | up(&file->mutex); |
| 482 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 483 | up(&ib_uverbs_idr_mutex); |
| 484 | |
| 485 | return in_len; |
| 486 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 487 | err_idr: |
| 488 | idr_remove(&ib_uverbs_mr_idr, obj->uobject.id); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 489 | |
| 490 | err_unreg: |
| 491 | ib_dereg_mr(mr); |
| 492 | |
| 493 | err_up: |
| 494 | up(&ib_uverbs_idr_mutex); |
| 495 | |
| 496 | ib_umem_release(file->device->ib_dev, &obj->umem); |
| 497 | |
| 498 | err_free: |
| 499 | kfree(obj); |
| 500 | return ret; |
| 501 | } |
| 502 | |
| 503 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, |
| 504 | const char __user *buf, int in_len, |
| 505 | int out_len) |
| 506 | { |
| 507 | struct ib_uverbs_dereg_mr cmd; |
| 508 | struct ib_mr *mr; |
| 509 | struct ib_umem_object *memobj; |
| 510 | int ret = -EINVAL; |
| 511 | |
| 512 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 513 | return -EFAULT; |
| 514 | |
| 515 | down(&ib_uverbs_idr_mutex); |
| 516 | |
| 517 | mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle); |
| 518 | if (!mr || mr->uobject->context != file->ucontext) |
| 519 | goto out; |
| 520 | |
| 521 | memobj = container_of(mr->uobject, struct ib_umem_object, uobject); |
| 522 | |
| 523 | ret = ib_dereg_mr(mr); |
| 524 | if (ret) |
| 525 | goto out; |
| 526 | |
| 527 | idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle); |
| 528 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 529 | down(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 530 | list_del(&memobj->uobject.list); |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 531 | up(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 532 | |
| 533 | ib_umem_release(file->device->ib_dev, &memobj->umem); |
| 534 | kfree(memobj); |
| 535 | |
| 536 | out: |
| 537 | up(&ib_uverbs_idr_mutex); |
| 538 | |
| 539 | return ret ? ret : in_len; |
| 540 | } |
| 541 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 542 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
| 543 | const char __user *buf, int in_len, |
| 544 | int out_len) |
| 545 | { |
| 546 | struct ib_uverbs_create_comp_channel cmd; |
| 547 | struct ib_uverbs_create_comp_channel_resp resp; |
| 548 | struct file *filp; |
| 549 | |
| 550 | if (out_len < sizeof resp) |
| 551 | return -ENOSPC; |
| 552 | |
| 553 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 554 | return -EFAULT; |
| 555 | |
| 556 | filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); |
| 557 | if (IS_ERR(filp)) |
| 558 | return PTR_ERR(filp); |
| 559 | |
| 560 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 561 | &resp, sizeof resp)) { |
| 562 | put_unused_fd(resp.fd); |
| 563 | fput(filp); |
| 564 | return -EFAULT; |
| 565 | } |
| 566 | |
| 567 | fd_install(resp.fd, filp); |
| 568 | return in_len; |
| 569 | } |
| 570 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 571 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
| 572 | const char __user *buf, int in_len, |
| 573 | int out_len) |
| 574 | { |
| 575 | struct ib_uverbs_create_cq cmd; |
| 576 | struct ib_uverbs_create_cq_resp resp; |
| 577 | struct ib_udata udata; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 578 | struct ib_ucq_object *uobj; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 579 | struct ib_uverbs_event_file *ev_file = NULL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 580 | struct ib_cq *cq; |
| 581 | int ret; |
| 582 | |
| 583 | if (out_len < sizeof resp) |
| 584 | return -ENOSPC; |
| 585 | |
| 586 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 587 | return -EFAULT; |
| 588 | |
| 589 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 590 | (unsigned long) cmd.response + sizeof resp, |
| 591 | in_len - sizeof cmd, out_len - sizeof resp); |
| 592 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 593 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 594 | return -EINVAL; |
| 595 | |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 596 | if (cmd.comp_channel >= 0) |
| 597 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); |
| 598 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 599 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 600 | if (!uobj) |
| 601 | return -ENOMEM; |
| 602 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 603 | uobj->uobject.user_handle = cmd.user_handle; |
| 604 | uobj->uobject.context = file->ucontext; |
Roland Dreier | 7162a3e | 2005-10-30 09:50:04 -0800 | [diff] [blame] | 605 | uobj->uverbs_file = file; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 606 | uobj->comp_events_reported = 0; |
| 607 | uobj->async_events_reported = 0; |
| 608 | INIT_LIST_HEAD(&uobj->comp_list); |
| 609 | INIT_LIST_HEAD(&uobj->async_list); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 610 | |
| 611 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, |
| 612 | file->ucontext, &udata); |
| 613 | if (IS_ERR(cq)) { |
| 614 | ret = PTR_ERR(cq); |
| 615 | goto err; |
| 616 | } |
| 617 | |
| 618 | cq->device = file->device->ib_dev; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 619 | cq->uobject = &uobj->uobject; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 620 | cq->comp_handler = ib_uverbs_comp_handler; |
| 621 | cq->event_handler = ib_uverbs_cq_event_handler; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 622 | cq->cq_context = ev_file; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 623 | atomic_set(&cq->usecnt, 0); |
| 624 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 625 | down(&ib_uverbs_idr_mutex); |
| 626 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 627 | retry: |
| 628 | if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) { |
| 629 | ret = -ENOMEM; |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 630 | goto err_up; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 631 | } |
| 632 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 633 | ret = idr_get_new(&ib_uverbs_cq_idr, cq, &uobj->uobject.id); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 634 | |
| 635 | if (ret == -EAGAIN) |
| 636 | goto retry; |
| 637 | if (ret) |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 638 | goto err_up; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 639 | |
| 640 | memset(&resp, 0, sizeof resp); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 641 | resp.cq_handle = uobj->uobject.id; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 642 | resp.cqe = cq->cqe; |
| 643 | |
| 644 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 645 | &resp, sizeof resp)) { |
| 646 | ret = -EFAULT; |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 647 | goto err_idr; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 648 | } |
| 649 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 650 | down(&file->mutex); |
| 651 | list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list); |
| 652 | up(&file->mutex); |
| 653 | |
| 654 | up(&ib_uverbs_idr_mutex); |
| 655 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 656 | return in_len; |
| 657 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 658 | err_idr: |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 659 | idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 660 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 661 | err_up: |
| 662 | up(&ib_uverbs_idr_mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 663 | ib_destroy_cq(cq); |
| 664 | |
| 665 | err: |
| 666 | kfree(uobj); |
| 667 | return ret; |
| 668 | } |
| 669 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 670 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
| 671 | const char __user *buf, int in_len, |
| 672 | int out_len) |
| 673 | { |
| 674 | struct ib_uverbs_poll_cq cmd; |
| 675 | struct ib_uverbs_poll_cq_resp *resp; |
| 676 | struct ib_cq *cq; |
| 677 | struct ib_wc *wc; |
| 678 | int ret = 0; |
| 679 | int i; |
| 680 | int rsize; |
| 681 | |
| 682 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 683 | return -EFAULT; |
| 684 | |
| 685 | wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); |
| 686 | if (!wc) |
| 687 | return -ENOMEM; |
| 688 | |
| 689 | rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); |
| 690 | resp = kmalloc(rsize, GFP_KERNEL); |
| 691 | if (!resp) { |
| 692 | ret = -ENOMEM; |
| 693 | goto out_wc; |
| 694 | } |
| 695 | |
| 696 | down(&ib_uverbs_idr_mutex); |
| 697 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| 698 | if (!cq || cq->uobject->context != file->ucontext) { |
| 699 | ret = -EINVAL; |
| 700 | goto out; |
| 701 | } |
| 702 | |
| 703 | resp->count = ib_poll_cq(cq, cmd.ne, wc); |
| 704 | |
| 705 | for (i = 0; i < resp->count; i++) { |
| 706 | resp->wc[i].wr_id = wc[i].wr_id; |
| 707 | resp->wc[i].status = wc[i].status; |
| 708 | resp->wc[i].opcode = wc[i].opcode; |
| 709 | resp->wc[i].vendor_err = wc[i].vendor_err; |
| 710 | resp->wc[i].byte_len = wc[i].byte_len; |
Jack Morgenstein | 77369ed | 2005-11-09 11:26:07 -0800 | [diff] [blame^] | 711 | resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 712 | resp->wc[i].qp_num = wc[i].qp_num; |
| 713 | resp->wc[i].src_qp = wc[i].src_qp; |
| 714 | resp->wc[i].wc_flags = wc[i].wc_flags; |
| 715 | resp->wc[i].pkey_index = wc[i].pkey_index; |
| 716 | resp->wc[i].slid = wc[i].slid; |
| 717 | resp->wc[i].sl = wc[i].sl; |
| 718 | resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; |
| 719 | resp->wc[i].port_num = wc[i].port_num; |
| 720 | } |
| 721 | |
| 722 | if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) |
| 723 | ret = -EFAULT; |
| 724 | |
| 725 | out: |
| 726 | up(&ib_uverbs_idr_mutex); |
| 727 | kfree(resp); |
| 728 | |
| 729 | out_wc: |
| 730 | kfree(wc); |
| 731 | return ret ? ret : in_len; |
| 732 | } |
| 733 | |
| 734 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, |
| 735 | const char __user *buf, int in_len, |
| 736 | int out_len) |
| 737 | { |
| 738 | struct ib_uverbs_req_notify_cq cmd; |
| 739 | struct ib_cq *cq; |
| 740 | int ret = -EINVAL; |
| 741 | |
| 742 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 743 | return -EFAULT; |
| 744 | |
| 745 | down(&ib_uverbs_idr_mutex); |
| 746 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| 747 | if (cq && cq->uobject->context == file->ucontext) { |
| 748 | ib_req_notify_cq(cq, cmd.solicited_only ? |
| 749 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); |
| 750 | ret = in_len; |
| 751 | } |
| 752 | up(&ib_uverbs_idr_mutex); |
| 753 | |
| 754 | return ret; |
| 755 | } |
| 756 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 757 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
| 758 | const char __user *buf, int in_len, |
| 759 | int out_len) |
| 760 | { |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 761 | struct ib_uverbs_destroy_cq cmd; |
| 762 | struct ib_uverbs_destroy_cq_resp resp; |
| 763 | struct ib_cq *cq; |
| 764 | struct ib_ucq_object *uobj; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 765 | struct ib_uverbs_event_file *ev_file; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 766 | u64 user_handle; |
| 767 | int ret = -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 768 | |
| 769 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 770 | return -EFAULT; |
| 771 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 772 | memset(&resp, 0, sizeof resp); |
| 773 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 774 | down(&ib_uverbs_idr_mutex); |
| 775 | |
| 776 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| 777 | if (!cq || cq->uobject->context != file->ucontext) |
| 778 | goto out; |
| 779 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 780 | user_handle = cq->uobject->user_handle; |
Roland Dreier | 6b73597 | 2005-09-26 13:53:25 -0700 | [diff] [blame] | 781 | uobj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
| 782 | ev_file = cq->cq_context; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 783 | |
| 784 | ret = ib_destroy_cq(cq); |
| 785 | if (ret) |
| 786 | goto out; |
| 787 | |
| 788 | idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle); |
| 789 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 790 | down(&file->mutex); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 791 | list_del(&uobj->uobject.list); |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 792 | up(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 793 | |
Roland Dreier | 70a30e1 | 2005-10-28 15:38:26 -0700 | [diff] [blame] | 794 | ib_uverbs_release_ucq(file, ev_file, uobj); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 795 | |
| 796 | resp.comp_events_reported = uobj->comp_events_reported; |
| 797 | resp.async_events_reported = uobj->async_events_reported; |
| 798 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 799 | kfree(uobj); |
| 800 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 801 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 802 | &resp, sizeof resp)) |
| 803 | ret = -EFAULT; |
| 804 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 805 | out: |
| 806 | up(&ib_uverbs_idr_mutex); |
| 807 | |
| 808 | return ret ? ret : in_len; |
| 809 | } |
| 810 | |
| 811 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, |
| 812 | const char __user *buf, int in_len, |
| 813 | int out_len) |
| 814 | { |
| 815 | struct ib_uverbs_create_qp cmd; |
| 816 | struct ib_uverbs_create_qp_resp resp; |
| 817 | struct ib_udata udata; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 818 | struct ib_uevent_object *uobj; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 819 | struct ib_pd *pd; |
| 820 | struct ib_cq *scq, *rcq; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 821 | struct ib_srq *srq; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 822 | struct ib_qp *qp; |
| 823 | struct ib_qp_init_attr attr; |
| 824 | int ret; |
| 825 | |
| 826 | if (out_len < sizeof resp) |
| 827 | return -ENOSPC; |
| 828 | |
| 829 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 830 | return -EFAULT; |
| 831 | |
| 832 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 833 | (unsigned long) cmd.response + sizeof resp, |
| 834 | in_len - sizeof cmd, out_len - sizeof resp); |
| 835 | |
| 836 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 837 | if (!uobj) |
| 838 | return -ENOMEM; |
| 839 | |
| 840 | down(&ib_uverbs_idr_mutex); |
| 841 | |
| 842 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| 843 | scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle); |
| 844 | rcq = idr_find(&ib_uverbs_cq_idr, cmd.recv_cq_handle); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 845 | srq = cmd.is_srq ? idr_find(&ib_uverbs_srq_idr, cmd.srq_handle) : NULL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 846 | |
| 847 | if (!pd || pd->uobject->context != file->ucontext || |
| 848 | !scq || scq->uobject->context != file->ucontext || |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 849 | !rcq || rcq->uobject->context != file->ucontext || |
| 850 | (cmd.is_srq && (!srq || srq->uobject->context != file->ucontext))) { |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 851 | ret = -EINVAL; |
| 852 | goto err_up; |
| 853 | } |
| 854 | |
| 855 | attr.event_handler = ib_uverbs_qp_event_handler; |
| 856 | attr.qp_context = file; |
| 857 | attr.send_cq = scq; |
| 858 | attr.recv_cq = rcq; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 859 | attr.srq = srq; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 860 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
| 861 | attr.qp_type = cmd.qp_type; |
| 862 | |
| 863 | attr.cap.max_send_wr = cmd.max_send_wr; |
| 864 | attr.cap.max_recv_wr = cmd.max_recv_wr; |
| 865 | attr.cap.max_send_sge = cmd.max_send_sge; |
| 866 | attr.cap.max_recv_sge = cmd.max_recv_sge; |
| 867 | attr.cap.max_inline_data = cmd.max_inline_data; |
| 868 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 869 | uobj->uobject.user_handle = cmd.user_handle; |
| 870 | uobj->uobject.context = file->ucontext; |
| 871 | uobj->events_reported = 0; |
| 872 | INIT_LIST_HEAD(&uobj->event_list); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 873 | |
| 874 | qp = pd->device->create_qp(pd, &attr, &udata); |
| 875 | if (IS_ERR(qp)) { |
| 876 | ret = PTR_ERR(qp); |
| 877 | goto err_up; |
| 878 | } |
| 879 | |
| 880 | qp->device = pd->device; |
| 881 | qp->pd = pd; |
| 882 | qp->send_cq = attr.send_cq; |
| 883 | qp->recv_cq = attr.recv_cq; |
| 884 | qp->srq = attr.srq; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 885 | qp->uobject = &uobj->uobject; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 886 | qp->event_handler = attr.event_handler; |
| 887 | qp->qp_context = attr.qp_context; |
| 888 | qp->qp_type = attr.qp_type; |
| 889 | atomic_inc(&pd->usecnt); |
| 890 | atomic_inc(&attr.send_cq->usecnt); |
| 891 | atomic_inc(&attr.recv_cq->usecnt); |
| 892 | if (attr.srq) |
| 893 | atomic_inc(&attr.srq->usecnt); |
| 894 | |
| 895 | memset(&resp, 0, sizeof resp); |
| 896 | resp.qpn = qp->qp_num; |
| 897 | |
| 898 | retry: |
| 899 | if (!idr_pre_get(&ib_uverbs_qp_idr, GFP_KERNEL)) { |
| 900 | ret = -ENOMEM; |
| 901 | goto err_destroy; |
| 902 | } |
| 903 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 904 | ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uobject.id); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 905 | |
| 906 | if (ret == -EAGAIN) |
| 907 | goto retry; |
| 908 | if (ret) |
| 909 | goto err_destroy; |
| 910 | |
Jack Morgenstein | 77369ed | 2005-11-09 11:26:07 -0800 | [diff] [blame^] | 911 | resp.qp_handle = uobj->uobject.id; |
| 912 | resp.max_recv_sge = attr.cap.max_recv_sge; |
| 913 | resp.max_send_sge = attr.cap.max_send_sge; |
| 914 | resp.max_recv_wr = attr.cap.max_recv_wr; |
| 915 | resp.max_send_wr = attr.cap.max_send_wr; |
| 916 | resp.max_inline_data = attr.cap.max_inline_data; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 917 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 918 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 919 | &resp, sizeof resp)) { |
| 920 | ret = -EFAULT; |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 921 | goto err_idr; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 922 | } |
| 923 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 924 | down(&file->mutex); |
| 925 | list_add_tail(&uobj->uobject.list, &file->ucontext->qp_list); |
| 926 | up(&file->mutex); |
| 927 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 928 | up(&ib_uverbs_idr_mutex); |
| 929 | |
| 930 | return in_len; |
| 931 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 932 | err_idr: |
| 933 | idr_remove(&ib_uverbs_qp_idr, uobj->uobject.id); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 934 | |
| 935 | err_destroy: |
| 936 | ib_destroy_qp(qp); |
| 937 | |
| 938 | err_up: |
| 939 | up(&ib_uverbs_idr_mutex); |
| 940 | |
| 941 | kfree(uobj); |
| 942 | return ret; |
| 943 | } |
| 944 | |
| 945 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
| 946 | const char __user *buf, int in_len, |
| 947 | int out_len) |
| 948 | { |
| 949 | struct ib_uverbs_modify_qp cmd; |
| 950 | struct ib_qp *qp; |
| 951 | struct ib_qp_attr *attr; |
| 952 | int ret; |
| 953 | |
| 954 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 955 | return -EFAULT; |
| 956 | |
| 957 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| 958 | if (!attr) |
| 959 | return -ENOMEM; |
| 960 | |
| 961 | down(&ib_uverbs_idr_mutex); |
| 962 | |
| 963 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| 964 | if (!qp || qp->uobject->context != file->ucontext) { |
| 965 | ret = -EINVAL; |
| 966 | goto out; |
| 967 | } |
| 968 | |
| 969 | attr->qp_state = cmd.qp_state; |
| 970 | attr->cur_qp_state = cmd.cur_qp_state; |
| 971 | attr->path_mtu = cmd.path_mtu; |
| 972 | attr->path_mig_state = cmd.path_mig_state; |
| 973 | attr->qkey = cmd.qkey; |
| 974 | attr->rq_psn = cmd.rq_psn; |
| 975 | attr->sq_psn = cmd.sq_psn; |
| 976 | attr->dest_qp_num = cmd.dest_qp_num; |
| 977 | attr->qp_access_flags = cmd.qp_access_flags; |
| 978 | attr->pkey_index = cmd.pkey_index; |
| 979 | attr->alt_pkey_index = cmd.pkey_index; |
| 980 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
| 981 | attr->max_rd_atomic = cmd.max_rd_atomic; |
| 982 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; |
| 983 | attr->min_rnr_timer = cmd.min_rnr_timer; |
| 984 | attr->port_num = cmd.port_num; |
| 985 | attr->timeout = cmd.timeout; |
| 986 | attr->retry_cnt = cmd.retry_cnt; |
| 987 | attr->rnr_retry = cmd.rnr_retry; |
| 988 | attr->alt_port_num = cmd.alt_port_num; |
| 989 | attr->alt_timeout = cmd.alt_timeout; |
| 990 | |
| 991 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); |
| 992 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; |
| 993 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; |
| 994 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; |
| 995 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; |
| 996 | attr->ah_attr.dlid = cmd.dest.dlid; |
| 997 | attr->ah_attr.sl = cmd.dest.sl; |
| 998 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; |
| 999 | attr->ah_attr.static_rate = cmd.dest.static_rate; |
| 1000 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; |
| 1001 | attr->ah_attr.port_num = cmd.dest.port_num; |
| 1002 | |
| 1003 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); |
| 1004 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; |
| 1005 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; |
| 1006 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; |
| 1007 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; |
| 1008 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; |
| 1009 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; |
| 1010 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; |
| 1011 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; |
| 1012 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; |
| 1013 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; |
| 1014 | |
| 1015 | ret = ib_modify_qp(qp, attr, cmd.attr_mask); |
| 1016 | if (ret) |
| 1017 | goto out; |
| 1018 | |
| 1019 | ret = in_len; |
| 1020 | |
| 1021 | out: |
| 1022 | up(&ib_uverbs_idr_mutex); |
| 1023 | kfree(attr); |
| 1024 | |
| 1025 | return ret; |
| 1026 | } |
| 1027 | |
| 1028 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, |
| 1029 | const char __user *buf, int in_len, |
| 1030 | int out_len) |
| 1031 | { |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1032 | struct ib_uverbs_destroy_qp cmd; |
| 1033 | struct ib_uverbs_destroy_qp_resp resp; |
| 1034 | struct ib_qp *qp; |
| 1035 | struct ib_uevent_object *uobj; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1036 | int ret = -EINVAL; |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1037 | |
| 1038 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1039 | return -EFAULT; |
| 1040 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1041 | memset(&resp, 0, sizeof resp); |
| 1042 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1043 | down(&ib_uverbs_idr_mutex); |
| 1044 | |
| 1045 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| 1046 | if (!qp || qp->uobject->context != file->ucontext) |
| 1047 | goto out; |
| 1048 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1049 | uobj = container_of(qp->uobject, struct ib_uevent_object, uobject); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1050 | |
| 1051 | ret = ib_destroy_qp(qp); |
| 1052 | if (ret) |
| 1053 | goto out; |
| 1054 | |
| 1055 | idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle); |
| 1056 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 1057 | down(&file->mutex); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1058 | list_del(&uobj->uobject.list); |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 1059 | up(&file->mutex); |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1060 | |
Roland Dreier | 70a30e1 | 2005-10-28 15:38:26 -0700 | [diff] [blame] | 1061 | ib_uverbs_release_uevent(file, uobj); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1062 | |
| 1063 | resp.events_reported = uobj->events_reported; |
| 1064 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1065 | kfree(uobj); |
| 1066 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1067 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1068 | &resp, sizeof resp)) |
| 1069 | ret = -EFAULT; |
| 1070 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1071 | out: |
| 1072 | up(&ib_uverbs_idr_mutex); |
| 1073 | |
| 1074 | return ret ? ret : in_len; |
| 1075 | } |
| 1076 | |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1077 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
| 1078 | const char __user *buf, int in_len, |
| 1079 | int out_len) |
| 1080 | { |
| 1081 | struct ib_uverbs_post_send cmd; |
| 1082 | struct ib_uverbs_post_send_resp resp; |
| 1083 | struct ib_uverbs_send_wr *user_wr; |
| 1084 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; |
| 1085 | struct ib_qp *qp; |
| 1086 | int i, sg_ind; |
| 1087 | ssize_t ret = -EINVAL; |
| 1088 | |
| 1089 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1090 | return -EFAULT; |
| 1091 | |
| 1092 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + |
| 1093 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) |
| 1094 | return -EINVAL; |
| 1095 | |
| 1096 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) |
| 1097 | return -EINVAL; |
| 1098 | |
| 1099 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); |
| 1100 | if (!user_wr) |
| 1101 | return -ENOMEM; |
| 1102 | |
| 1103 | down(&ib_uverbs_idr_mutex); |
| 1104 | |
| 1105 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| 1106 | if (!qp || qp->uobject->context != file->ucontext) |
| 1107 | goto out; |
| 1108 | |
| 1109 | sg_ind = 0; |
| 1110 | last = NULL; |
| 1111 | for (i = 0; i < cmd.wr_count; ++i) { |
| 1112 | if (copy_from_user(user_wr, |
| 1113 | buf + sizeof cmd + i * cmd.wqe_size, |
| 1114 | cmd.wqe_size)) { |
| 1115 | ret = -EFAULT; |
| 1116 | goto out; |
| 1117 | } |
| 1118 | |
| 1119 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { |
| 1120 | ret = -EINVAL; |
| 1121 | goto out; |
| 1122 | } |
| 1123 | |
| 1124 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + |
| 1125 | user_wr->num_sge * sizeof (struct ib_sge), |
| 1126 | GFP_KERNEL); |
| 1127 | if (!next) { |
| 1128 | ret = -ENOMEM; |
| 1129 | goto out; |
| 1130 | } |
| 1131 | |
| 1132 | if (!last) |
| 1133 | wr = next; |
| 1134 | else |
| 1135 | last->next = next; |
| 1136 | last = next; |
| 1137 | |
| 1138 | next->next = NULL; |
| 1139 | next->wr_id = user_wr->wr_id; |
| 1140 | next->num_sge = user_wr->num_sge; |
| 1141 | next->opcode = user_wr->opcode; |
| 1142 | next->send_flags = user_wr->send_flags; |
Jack Morgenstein | 77369ed | 2005-11-09 11:26:07 -0800 | [diff] [blame^] | 1143 | next->imm_data = (__be32 __force) user_wr->imm_data; |
Roland Dreier | 67cdb40 | 2005-10-14 15:26:04 -0700 | [diff] [blame] | 1144 | |
| 1145 | if (qp->qp_type == IB_QPT_UD) { |
| 1146 | next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr, |
| 1147 | user_wr->wr.ud.ah); |
| 1148 | if (!next->wr.ud.ah) { |
| 1149 | ret = -EINVAL; |
| 1150 | goto out; |
| 1151 | } |
| 1152 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; |
| 1153 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; |
| 1154 | } else { |
| 1155 | switch (next->opcode) { |
| 1156 | case IB_WR_RDMA_WRITE: |
| 1157 | case IB_WR_RDMA_WRITE_WITH_IMM: |
| 1158 | case IB_WR_RDMA_READ: |
| 1159 | next->wr.rdma.remote_addr = |
| 1160 | user_wr->wr.rdma.remote_addr; |
| 1161 | next->wr.rdma.rkey = |
| 1162 | user_wr->wr.rdma.rkey; |
| 1163 | break; |
| 1164 | case IB_WR_ATOMIC_CMP_AND_SWP: |
| 1165 | case IB_WR_ATOMIC_FETCH_AND_ADD: |
| 1166 | next->wr.atomic.remote_addr = |
| 1167 | user_wr->wr.atomic.remote_addr; |
| 1168 | next->wr.atomic.compare_add = |
| 1169 | user_wr->wr.atomic.compare_add; |
| 1170 | next->wr.atomic.swap = user_wr->wr.atomic.swap; |
| 1171 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; |
| 1172 | break; |
| 1173 | default: |
| 1174 | break; |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | if (next->num_sge) { |
| 1179 | next->sg_list = (void *) next + |
| 1180 | ALIGN(sizeof *next, sizeof (struct ib_sge)); |
| 1181 | if (copy_from_user(next->sg_list, |
| 1182 | buf + sizeof cmd + |
| 1183 | cmd.wr_count * cmd.wqe_size + |
| 1184 | sg_ind * sizeof (struct ib_sge), |
| 1185 | next->num_sge * sizeof (struct ib_sge))) { |
| 1186 | ret = -EFAULT; |
| 1187 | goto out; |
| 1188 | } |
| 1189 | sg_ind += next->num_sge; |
| 1190 | } else |
| 1191 | next->sg_list = NULL; |
| 1192 | } |
| 1193 | |
| 1194 | resp.bad_wr = 0; |
| 1195 | ret = qp->device->post_send(qp, wr, &bad_wr); |
| 1196 | if (ret) |
| 1197 | for (next = wr; next; next = next->next) { |
| 1198 | ++resp.bad_wr; |
| 1199 | if (next == bad_wr) |
| 1200 | break; |
| 1201 | } |
| 1202 | |
| 1203 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1204 | &resp, sizeof resp)) |
| 1205 | ret = -EFAULT; |
| 1206 | |
| 1207 | out: |
| 1208 | up(&ib_uverbs_idr_mutex); |
| 1209 | |
| 1210 | while (wr) { |
| 1211 | next = wr->next; |
| 1212 | kfree(wr); |
| 1213 | wr = next; |
| 1214 | } |
| 1215 | |
| 1216 | kfree(user_wr); |
| 1217 | |
| 1218 | return ret ? ret : in_len; |
| 1219 | } |
| 1220 | |
| 1221 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, |
| 1222 | int in_len, |
| 1223 | u32 wr_count, |
| 1224 | u32 sge_count, |
| 1225 | u32 wqe_size) |
| 1226 | { |
| 1227 | struct ib_uverbs_recv_wr *user_wr; |
| 1228 | struct ib_recv_wr *wr = NULL, *last, *next; |
| 1229 | int sg_ind; |
| 1230 | int i; |
| 1231 | int ret; |
| 1232 | |
| 1233 | if (in_len < wqe_size * wr_count + |
| 1234 | sge_count * sizeof (struct ib_uverbs_sge)) |
| 1235 | return ERR_PTR(-EINVAL); |
| 1236 | |
| 1237 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) |
| 1238 | return ERR_PTR(-EINVAL); |
| 1239 | |
| 1240 | user_wr = kmalloc(wqe_size, GFP_KERNEL); |
| 1241 | if (!user_wr) |
| 1242 | return ERR_PTR(-ENOMEM); |
| 1243 | |
| 1244 | sg_ind = 0; |
| 1245 | last = NULL; |
| 1246 | for (i = 0; i < wr_count; ++i) { |
| 1247 | if (copy_from_user(user_wr, buf + i * wqe_size, |
| 1248 | wqe_size)) { |
| 1249 | ret = -EFAULT; |
| 1250 | goto err; |
| 1251 | } |
| 1252 | |
| 1253 | if (user_wr->num_sge + sg_ind > sge_count) { |
| 1254 | ret = -EINVAL; |
| 1255 | goto err; |
| 1256 | } |
| 1257 | |
| 1258 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + |
| 1259 | user_wr->num_sge * sizeof (struct ib_sge), |
| 1260 | GFP_KERNEL); |
| 1261 | if (!next) { |
| 1262 | ret = -ENOMEM; |
| 1263 | goto err; |
| 1264 | } |
| 1265 | |
| 1266 | if (!last) |
| 1267 | wr = next; |
| 1268 | else |
| 1269 | last->next = next; |
| 1270 | last = next; |
| 1271 | |
| 1272 | next->next = NULL; |
| 1273 | next->wr_id = user_wr->wr_id; |
| 1274 | next->num_sge = user_wr->num_sge; |
| 1275 | |
| 1276 | if (next->num_sge) { |
| 1277 | next->sg_list = (void *) next + |
| 1278 | ALIGN(sizeof *next, sizeof (struct ib_sge)); |
| 1279 | if (copy_from_user(next->sg_list, |
| 1280 | buf + wr_count * wqe_size + |
| 1281 | sg_ind * sizeof (struct ib_sge), |
| 1282 | next->num_sge * sizeof (struct ib_sge))) { |
| 1283 | ret = -EFAULT; |
| 1284 | goto err; |
| 1285 | } |
| 1286 | sg_ind += next->num_sge; |
| 1287 | } else |
| 1288 | next->sg_list = NULL; |
| 1289 | } |
| 1290 | |
| 1291 | kfree(user_wr); |
| 1292 | return wr; |
| 1293 | |
| 1294 | err: |
| 1295 | kfree(user_wr); |
| 1296 | |
| 1297 | while (wr) { |
| 1298 | next = wr->next; |
| 1299 | kfree(wr); |
| 1300 | wr = next; |
| 1301 | } |
| 1302 | |
| 1303 | return ERR_PTR(ret); |
| 1304 | } |
| 1305 | |
| 1306 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, |
| 1307 | const char __user *buf, int in_len, |
| 1308 | int out_len) |
| 1309 | { |
| 1310 | struct ib_uverbs_post_recv cmd; |
| 1311 | struct ib_uverbs_post_recv_resp resp; |
| 1312 | struct ib_recv_wr *wr, *next, *bad_wr; |
| 1313 | struct ib_qp *qp; |
| 1314 | ssize_t ret = -EINVAL; |
| 1315 | |
| 1316 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1317 | return -EFAULT; |
| 1318 | |
| 1319 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, |
| 1320 | in_len - sizeof cmd, cmd.wr_count, |
| 1321 | cmd.sge_count, cmd.wqe_size); |
| 1322 | if (IS_ERR(wr)) |
| 1323 | return PTR_ERR(wr); |
| 1324 | |
| 1325 | down(&ib_uverbs_idr_mutex); |
| 1326 | |
| 1327 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| 1328 | if (!qp || qp->uobject->context != file->ucontext) |
| 1329 | goto out; |
| 1330 | |
| 1331 | resp.bad_wr = 0; |
| 1332 | ret = qp->device->post_recv(qp, wr, &bad_wr); |
| 1333 | if (ret) |
| 1334 | for (next = wr; next; next = next->next) { |
| 1335 | ++resp.bad_wr; |
| 1336 | if (next == bad_wr) |
| 1337 | break; |
| 1338 | } |
| 1339 | |
| 1340 | |
| 1341 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1342 | &resp, sizeof resp)) |
| 1343 | ret = -EFAULT; |
| 1344 | |
| 1345 | out: |
| 1346 | up(&ib_uverbs_idr_mutex); |
| 1347 | |
| 1348 | while (wr) { |
| 1349 | next = wr->next; |
| 1350 | kfree(wr); |
| 1351 | wr = next; |
| 1352 | } |
| 1353 | |
| 1354 | return ret ? ret : in_len; |
| 1355 | } |
| 1356 | |
| 1357 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, |
| 1358 | const char __user *buf, int in_len, |
| 1359 | int out_len) |
| 1360 | { |
| 1361 | struct ib_uverbs_post_srq_recv cmd; |
| 1362 | struct ib_uverbs_post_srq_recv_resp resp; |
| 1363 | struct ib_recv_wr *wr, *next, *bad_wr; |
| 1364 | struct ib_srq *srq; |
| 1365 | ssize_t ret = -EINVAL; |
| 1366 | |
| 1367 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1368 | return -EFAULT; |
| 1369 | |
| 1370 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, |
| 1371 | in_len - sizeof cmd, cmd.wr_count, |
| 1372 | cmd.sge_count, cmd.wqe_size); |
| 1373 | if (IS_ERR(wr)) |
| 1374 | return PTR_ERR(wr); |
| 1375 | |
| 1376 | down(&ib_uverbs_idr_mutex); |
| 1377 | |
| 1378 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| 1379 | if (!srq || srq->uobject->context != file->ucontext) |
| 1380 | goto out; |
| 1381 | |
| 1382 | resp.bad_wr = 0; |
| 1383 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); |
| 1384 | if (ret) |
| 1385 | for (next = wr; next; next = next->next) { |
| 1386 | ++resp.bad_wr; |
| 1387 | if (next == bad_wr) |
| 1388 | break; |
| 1389 | } |
| 1390 | |
| 1391 | |
| 1392 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1393 | &resp, sizeof resp)) |
| 1394 | ret = -EFAULT; |
| 1395 | |
| 1396 | out: |
| 1397 | up(&ib_uverbs_idr_mutex); |
| 1398 | |
| 1399 | while (wr) { |
| 1400 | next = wr->next; |
| 1401 | kfree(wr); |
| 1402 | wr = next; |
| 1403 | } |
| 1404 | |
| 1405 | return ret ? ret : in_len; |
| 1406 | } |
| 1407 | |
| 1408 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, |
| 1409 | const char __user *buf, int in_len, |
| 1410 | int out_len) |
| 1411 | { |
| 1412 | struct ib_uverbs_create_ah cmd; |
| 1413 | struct ib_uverbs_create_ah_resp resp; |
| 1414 | struct ib_uobject *uobj; |
| 1415 | struct ib_pd *pd; |
| 1416 | struct ib_ah *ah; |
| 1417 | struct ib_ah_attr attr; |
| 1418 | int ret; |
| 1419 | |
| 1420 | if (out_len < sizeof resp) |
| 1421 | return -ENOSPC; |
| 1422 | |
| 1423 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1424 | return -EFAULT; |
| 1425 | |
| 1426 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 1427 | if (!uobj) |
| 1428 | return -ENOMEM; |
| 1429 | |
| 1430 | down(&ib_uverbs_idr_mutex); |
| 1431 | |
| 1432 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| 1433 | if (!pd || pd->uobject->context != file->ucontext) { |
| 1434 | ret = -EINVAL; |
| 1435 | goto err_up; |
| 1436 | } |
| 1437 | |
| 1438 | uobj->user_handle = cmd.user_handle; |
| 1439 | uobj->context = file->ucontext; |
| 1440 | |
| 1441 | attr.dlid = cmd.attr.dlid; |
| 1442 | attr.sl = cmd.attr.sl; |
| 1443 | attr.src_path_bits = cmd.attr.src_path_bits; |
| 1444 | attr.static_rate = cmd.attr.static_rate; |
| 1445 | attr.port_num = cmd.attr.port_num; |
| 1446 | attr.grh.flow_label = cmd.attr.grh.flow_label; |
| 1447 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; |
| 1448 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; |
| 1449 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; |
| 1450 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); |
| 1451 | |
| 1452 | ah = ib_create_ah(pd, &attr); |
| 1453 | if (IS_ERR(ah)) { |
| 1454 | ret = PTR_ERR(ah); |
| 1455 | goto err_up; |
| 1456 | } |
| 1457 | |
| 1458 | ah->uobject = uobj; |
| 1459 | |
| 1460 | retry: |
| 1461 | if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) { |
| 1462 | ret = -ENOMEM; |
| 1463 | goto err_destroy; |
| 1464 | } |
| 1465 | |
| 1466 | ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id); |
| 1467 | |
| 1468 | if (ret == -EAGAIN) |
| 1469 | goto retry; |
| 1470 | if (ret) |
| 1471 | goto err_destroy; |
| 1472 | |
| 1473 | resp.ah_handle = uobj->id; |
| 1474 | |
| 1475 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1476 | &resp, sizeof resp)) { |
| 1477 | ret = -EFAULT; |
| 1478 | goto err_idr; |
| 1479 | } |
| 1480 | |
| 1481 | down(&file->mutex); |
| 1482 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
| 1483 | up(&file->mutex); |
| 1484 | |
| 1485 | up(&ib_uverbs_idr_mutex); |
| 1486 | |
| 1487 | return in_len; |
| 1488 | |
| 1489 | err_idr: |
| 1490 | idr_remove(&ib_uverbs_ah_idr, uobj->id); |
| 1491 | |
| 1492 | err_destroy: |
| 1493 | ib_destroy_ah(ah); |
| 1494 | |
| 1495 | err_up: |
| 1496 | up(&ib_uverbs_idr_mutex); |
| 1497 | |
| 1498 | kfree(uobj); |
| 1499 | return ret; |
| 1500 | } |
| 1501 | |
| 1502 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, |
| 1503 | const char __user *buf, int in_len, int out_len) |
| 1504 | { |
| 1505 | struct ib_uverbs_destroy_ah cmd; |
| 1506 | struct ib_ah *ah; |
| 1507 | struct ib_uobject *uobj; |
| 1508 | int ret = -EINVAL; |
| 1509 | |
| 1510 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1511 | return -EFAULT; |
| 1512 | |
| 1513 | down(&ib_uverbs_idr_mutex); |
| 1514 | |
| 1515 | ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle); |
| 1516 | if (!ah || ah->uobject->context != file->ucontext) |
| 1517 | goto out; |
| 1518 | |
| 1519 | uobj = ah->uobject; |
| 1520 | |
| 1521 | ret = ib_destroy_ah(ah); |
| 1522 | if (ret) |
| 1523 | goto out; |
| 1524 | |
| 1525 | idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle); |
| 1526 | |
| 1527 | down(&file->mutex); |
| 1528 | list_del(&uobj->list); |
| 1529 | up(&file->mutex); |
| 1530 | |
| 1531 | kfree(uobj); |
| 1532 | |
| 1533 | out: |
| 1534 | up(&ib_uverbs_idr_mutex); |
| 1535 | |
| 1536 | return ret ? ret : in_len; |
| 1537 | } |
| 1538 | |
Roland Dreier | bc38a6a | 2005-07-07 17:57:13 -0700 | [diff] [blame] | 1539 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
| 1540 | const char __user *buf, int in_len, |
| 1541 | int out_len) |
| 1542 | { |
| 1543 | struct ib_uverbs_attach_mcast cmd; |
| 1544 | struct ib_qp *qp; |
| 1545 | int ret = -EINVAL; |
| 1546 | |
| 1547 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1548 | return -EFAULT; |
| 1549 | |
| 1550 | down(&ib_uverbs_idr_mutex); |
| 1551 | |
| 1552 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| 1553 | if (qp && qp->uobject->context == file->ucontext) |
| 1554 | ret = ib_attach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
| 1555 | |
| 1556 | up(&ib_uverbs_idr_mutex); |
| 1557 | |
| 1558 | return ret ? ret : in_len; |
| 1559 | } |
| 1560 | |
| 1561 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, |
| 1562 | const char __user *buf, int in_len, |
| 1563 | int out_len) |
| 1564 | { |
| 1565 | struct ib_uverbs_detach_mcast cmd; |
| 1566 | struct ib_qp *qp; |
| 1567 | int ret = -EINVAL; |
| 1568 | |
| 1569 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1570 | return -EFAULT; |
| 1571 | |
| 1572 | down(&ib_uverbs_idr_mutex); |
| 1573 | |
| 1574 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| 1575 | if (qp && qp->uobject->context == file->ucontext) |
| 1576 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
| 1577 | |
| 1578 | up(&ib_uverbs_idr_mutex); |
| 1579 | |
| 1580 | return ret ? ret : in_len; |
| 1581 | } |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1582 | |
| 1583 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
| 1584 | const char __user *buf, int in_len, |
| 1585 | int out_len) |
| 1586 | { |
| 1587 | struct ib_uverbs_create_srq cmd; |
| 1588 | struct ib_uverbs_create_srq_resp resp; |
| 1589 | struct ib_udata udata; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1590 | struct ib_uevent_object *uobj; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1591 | struct ib_pd *pd; |
| 1592 | struct ib_srq *srq; |
| 1593 | struct ib_srq_init_attr attr; |
| 1594 | int ret; |
| 1595 | |
| 1596 | if (out_len < sizeof resp) |
| 1597 | return -ENOSPC; |
| 1598 | |
| 1599 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1600 | return -EFAULT; |
| 1601 | |
| 1602 | INIT_UDATA(&udata, buf + sizeof cmd, |
| 1603 | (unsigned long) cmd.response + sizeof resp, |
| 1604 | in_len - sizeof cmd, out_len - sizeof resp); |
| 1605 | |
| 1606 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| 1607 | if (!uobj) |
| 1608 | return -ENOMEM; |
| 1609 | |
| 1610 | down(&ib_uverbs_idr_mutex); |
| 1611 | |
| 1612 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| 1613 | |
| 1614 | if (!pd || pd->uobject->context != file->ucontext) { |
| 1615 | ret = -EINVAL; |
| 1616 | goto err_up; |
| 1617 | } |
| 1618 | |
| 1619 | attr.event_handler = ib_uverbs_srq_event_handler; |
| 1620 | attr.srq_context = file; |
| 1621 | attr.attr.max_wr = cmd.max_wr; |
| 1622 | attr.attr.max_sge = cmd.max_sge; |
| 1623 | attr.attr.srq_limit = cmd.srq_limit; |
| 1624 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1625 | uobj->uobject.user_handle = cmd.user_handle; |
| 1626 | uobj->uobject.context = file->ucontext; |
| 1627 | uobj->events_reported = 0; |
| 1628 | INIT_LIST_HEAD(&uobj->event_list); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1629 | |
| 1630 | srq = pd->device->create_srq(pd, &attr, &udata); |
| 1631 | if (IS_ERR(srq)) { |
| 1632 | ret = PTR_ERR(srq); |
| 1633 | goto err_up; |
| 1634 | } |
| 1635 | |
| 1636 | srq->device = pd->device; |
| 1637 | srq->pd = pd; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1638 | srq->uobject = &uobj->uobject; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1639 | srq->event_handler = attr.event_handler; |
| 1640 | srq->srq_context = attr.srq_context; |
| 1641 | atomic_inc(&pd->usecnt); |
| 1642 | atomic_set(&srq->usecnt, 0); |
| 1643 | |
| 1644 | memset(&resp, 0, sizeof resp); |
| 1645 | |
| 1646 | retry: |
| 1647 | if (!idr_pre_get(&ib_uverbs_srq_idr, GFP_KERNEL)) { |
| 1648 | ret = -ENOMEM; |
| 1649 | goto err_destroy; |
| 1650 | } |
| 1651 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1652 | ret = idr_get_new(&ib_uverbs_srq_idr, srq, &uobj->uobject.id); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1653 | |
| 1654 | if (ret == -EAGAIN) |
| 1655 | goto retry; |
| 1656 | if (ret) |
| 1657 | goto err_destroy; |
| 1658 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1659 | resp.srq_handle = uobj->uobject.id; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1660 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1661 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1662 | &resp, sizeof resp)) { |
| 1663 | ret = -EFAULT; |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 1664 | goto err_idr; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1665 | } |
| 1666 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 1667 | down(&file->mutex); |
| 1668 | list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list); |
| 1669 | up(&file->mutex); |
| 1670 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1671 | up(&ib_uverbs_idr_mutex); |
| 1672 | |
| 1673 | return in_len; |
| 1674 | |
Roland Dreier | eb9d3cd | 2005-09-27 15:07:25 -0700 | [diff] [blame] | 1675 | err_idr: |
| 1676 | idr_remove(&ib_uverbs_srq_idr, uobj->uobject.id); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1677 | |
| 1678 | err_destroy: |
| 1679 | ib_destroy_srq(srq); |
| 1680 | |
| 1681 | err_up: |
| 1682 | up(&ib_uverbs_idr_mutex); |
| 1683 | |
| 1684 | kfree(uobj); |
| 1685 | return ret; |
| 1686 | } |
| 1687 | |
| 1688 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
| 1689 | const char __user *buf, int in_len, |
| 1690 | int out_len) |
| 1691 | { |
| 1692 | struct ib_uverbs_modify_srq cmd; |
| 1693 | struct ib_srq *srq; |
| 1694 | struct ib_srq_attr attr; |
| 1695 | int ret; |
| 1696 | |
| 1697 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1698 | return -EFAULT; |
| 1699 | |
| 1700 | down(&ib_uverbs_idr_mutex); |
| 1701 | |
| 1702 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| 1703 | if (!srq || srq->uobject->context != file->ucontext) { |
| 1704 | ret = -EINVAL; |
| 1705 | goto out; |
| 1706 | } |
| 1707 | |
| 1708 | attr.max_wr = cmd.max_wr; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1709 | attr.srq_limit = cmd.srq_limit; |
| 1710 | |
| 1711 | ret = ib_modify_srq(srq, &attr, cmd.attr_mask); |
| 1712 | |
| 1713 | out: |
| 1714 | up(&ib_uverbs_idr_mutex); |
| 1715 | |
| 1716 | return ret ? ret : in_len; |
| 1717 | } |
| 1718 | |
| 1719 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
| 1720 | const char __user *buf, int in_len, |
| 1721 | int out_len) |
| 1722 | { |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1723 | struct ib_uverbs_destroy_srq cmd; |
| 1724 | struct ib_uverbs_destroy_srq_resp resp; |
| 1725 | struct ib_srq *srq; |
| 1726 | struct ib_uevent_object *uobj; |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1727 | int ret = -EINVAL; |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1728 | |
| 1729 | if (copy_from_user(&cmd, buf, sizeof cmd)) |
| 1730 | return -EFAULT; |
| 1731 | |
| 1732 | down(&ib_uverbs_idr_mutex); |
| 1733 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1734 | memset(&resp, 0, sizeof resp); |
| 1735 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1736 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| 1737 | if (!srq || srq->uobject->context != file->ucontext) |
| 1738 | goto out; |
| 1739 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1740 | uobj = container_of(srq->uobject, struct ib_uevent_object, uobject); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1741 | |
| 1742 | ret = ib_destroy_srq(srq); |
| 1743 | if (ret) |
| 1744 | goto out; |
| 1745 | |
| 1746 | idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle); |
| 1747 | |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 1748 | down(&file->mutex); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1749 | list_del(&uobj->uobject.list); |
Roland Dreier | 63c47c2 | 2005-09-26 13:01:03 -0700 | [diff] [blame] | 1750 | up(&file->mutex); |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1751 | |
Roland Dreier | 70a30e1 | 2005-10-28 15:38:26 -0700 | [diff] [blame] | 1752 | ib_uverbs_release_uevent(file, uobj); |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1753 | |
| 1754 | resp.events_reported = uobj->events_reported; |
| 1755 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1756 | kfree(uobj); |
| 1757 | |
Roland Dreier | 63aaf64 | 2005-09-09 15:55:08 -0700 | [diff] [blame] | 1758 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| 1759 | &resp, sizeof resp)) |
| 1760 | ret = -EFAULT; |
| 1761 | |
Roland Dreier | f520ba5 | 2005-08-18 12:24:13 -0700 | [diff] [blame] | 1762 | out: |
| 1763 | up(&ib_uverbs_idr_mutex); |
| 1764 | |
| 1765 | return ret ? ret : in_len; |
| 1766 | } |