Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 1 | /* |
| 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2010 Nokia Corporation |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License version 2 as |
| 7 | published by the Free Software Foundation; |
| 8 | |
| 9 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 10 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 11 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 12 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
| 13 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 14 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | |
| 18 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 19 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| 20 | SOFTWARE IS DISCLAIMED. |
| 21 | */ |
| 22 | |
| 23 | /* Bluetooth HCI Management interface */ |
| 24 | |
| 25 | #include <asm/uaccess.h> |
| 26 | #include <asm/unaligned.h> |
| 27 | |
| 28 | #include <net/bluetooth/bluetooth.h> |
| 29 | #include <net/bluetooth/hci_core.h> |
| 30 | #include <net/bluetooth/mgmt.h> |
| 31 | |
Johan Hedberg | 02d9812 | 2010-12-13 21:07:04 +0200 | [diff] [blame] | 32 | #define MGMT_VERSION 0 |
| 33 | #define MGMT_REVISION 1 |
| 34 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 35 | struct pending_cmd { |
| 36 | struct list_head list; |
| 37 | __u16 opcode; |
| 38 | int index; |
| 39 | void *cmd; |
| 40 | struct sock *sk; |
| 41 | }; |
| 42 | |
| 43 | LIST_HEAD(cmd_list); |
| 44 | |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 45 | static int cmd_status(struct sock *sk, u16 cmd, u8 status) |
| 46 | { |
| 47 | struct sk_buff *skb; |
| 48 | struct mgmt_hdr *hdr; |
| 49 | struct mgmt_ev_cmd_status *ev; |
| 50 | |
| 51 | BT_DBG("sock %p", sk); |
| 52 | |
| 53 | skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_ATOMIC); |
| 54 | if (!skb) |
| 55 | return -ENOMEM; |
| 56 | |
| 57 | hdr = (void *) skb_put(skb, sizeof(*hdr)); |
| 58 | |
| 59 | hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS); |
| 60 | hdr->len = cpu_to_le16(sizeof(*ev)); |
| 61 | |
| 62 | ev = (void *) skb_put(skb, sizeof(*ev)); |
| 63 | ev->status = status; |
| 64 | put_unaligned_le16(cmd, &ev->opcode); |
| 65 | |
| 66 | if (sock_queue_rcv_skb(sk, skb) < 0) |
| 67 | kfree_skb(skb); |
| 68 | |
| 69 | return 0; |
| 70 | } |
| 71 | |
Johan Hedberg | 02d9812 | 2010-12-13 21:07:04 +0200 | [diff] [blame] | 72 | static int read_version(struct sock *sk) |
| 73 | { |
| 74 | struct sk_buff *skb; |
| 75 | struct mgmt_hdr *hdr; |
| 76 | struct mgmt_ev_cmd_complete *ev; |
| 77 | struct mgmt_rp_read_version *rp; |
| 78 | |
| 79 | BT_DBG("sock %p", sk); |
| 80 | |
| 81 | skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC); |
| 82 | if (!skb) |
| 83 | return -ENOMEM; |
| 84 | |
| 85 | hdr = (void *) skb_put(skb, sizeof(*hdr)); |
| 86 | hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE); |
| 87 | hdr->len = cpu_to_le16(sizeof(*ev) + sizeof(*rp)); |
| 88 | |
| 89 | ev = (void *) skb_put(skb, sizeof(*ev)); |
| 90 | put_unaligned_le16(MGMT_OP_READ_VERSION, &ev->opcode); |
| 91 | |
| 92 | rp = (void *) skb_put(skb, sizeof(*rp)); |
| 93 | rp->version = MGMT_VERSION; |
| 94 | put_unaligned_le16(MGMT_REVISION, &rp->revision); |
| 95 | |
| 96 | if (sock_queue_rcv_skb(sk, skb) < 0) |
| 97 | kfree_skb(skb); |
| 98 | |
| 99 | return 0; |
| 100 | } |
| 101 | |
Johan Hedberg | faba42e | 2010-12-13 21:07:05 +0200 | [diff] [blame] | 102 | static int read_index_list(struct sock *sk) |
| 103 | { |
| 104 | struct sk_buff *skb; |
| 105 | struct mgmt_hdr *hdr; |
| 106 | struct mgmt_ev_cmd_complete *ev; |
| 107 | struct mgmt_rp_read_index_list *rp; |
| 108 | struct list_head *p; |
| 109 | size_t body_len; |
| 110 | u16 count; |
| 111 | int i; |
| 112 | |
| 113 | BT_DBG("sock %p", sk); |
| 114 | |
| 115 | read_lock(&hci_dev_list_lock); |
| 116 | |
| 117 | count = 0; |
| 118 | list_for_each(p, &hci_dev_list) { |
| 119 | count++; |
| 120 | } |
| 121 | |
| 122 | body_len = sizeof(*ev) + sizeof(*rp) + (2 * count); |
| 123 | skb = alloc_skb(sizeof(*hdr) + body_len, GFP_ATOMIC); |
Jesper Juhl | b2c60d4 | 2011-01-14 00:18:49 +0100 | [diff] [blame] | 124 | if (!skb) { |
| 125 | read_unlock(&hci_dev_list_lock); |
Johan Hedberg | faba42e | 2010-12-13 21:07:05 +0200 | [diff] [blame] | 126 | return -ENOMEM; |
Jesper Juhl | b2c60d4 | 2011-01-14 00:18:49 +0100 | [diff] [blame] | 127 | } |
Johan Hedberg | faba42e | 2010-12-13 21:07:05 +0200 | [diff] [blame] | 128 | |
| 129 | hdr = (void *) skb_put(skb, sizeof(*hdr)); |
| 130 | hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE); |
| 131 | hdr->len = cpu_to_le16(body_len); |
| 132 | |
| 133 | ev = (void *) skb_put(skb, sizeof(*ev)); |
| 134 | put_unaligned_le16(MGMT_OP_READ_INDEX_LIST, &ev->opcode); |
| 135 | |
| 136 | rp = (void *) skb_put(skb, sizeof(*rp) + (2 * count)); |
| 137 | put_unaligned_le16(count, &rp->num_controllers); |
| 138 | |
| 139 | i = 0; |
| 140 | list_for_each(p, &hci_dev_list) { |
| 141 | struct hci_dev *d = list_entry(p, struct hci_dev, list); |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 142 | |
| 143 | hci_del_off_timer(d); |
| 144 | |
| 145 | if (test_bit(HCI_SETUP, &d->flags)) |
| 146 | continue; |
| 147 | |
Johan Hedberg | faba42e | 2010-12-13 21:07:05 +0200 | [diff] [blame] | 148 | put_unaligned_le16(d->id, &rp->index[i++]); |
| 149 | BT_DBG("Added hci%u", d->id); |
| 150 | } |
| 151 | |
| 152 | read_unlock(&hci_dev_list_lock); |
| 153 | |
| 154 | if (sock_queue_rcv_skb(sk, skb) < 0) |
| 155 | kfree_skb(skb); |
| 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 160 | static int read_controller_info(struct sock *sk, unsigned char *data, u16 len) |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 161 | { |
| 162 | struct sk_buff *skb; |
| 163 | struct mgmt_hdr *hdr; |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 164 | struct mgmt_ev_cmd_complete *ev; |
| 165 | struct mgmt_rp_read_info *rp; |
| 166 | struct mgmt_cp_read_info *cp; |
| 167 | struct hci_dev *hdev; |
| 168 | u16 dev_id; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 169 | |
| 170 | BT_DBG("sock %p", sk); |
| 171 | |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 172 | if (len != 2) |
| 173 | return cmd_status(sk, MGMT_OP_READ_INFO, EINVAL); |
| 174 | |
| 175 | skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC); |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 176 | if (!skb) |
Johan Hedberg | e41d8b4 | 2010-12-13 21:07:03 +0200 | [diff] [blame] | 177 | return -ENOMEM; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 178 | |
| 179 | hdr = (void *) skb_put(skb, sizeof(*hdr)); |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 180 | hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE); |
| 181 | hdr->len = cpu_to_le16(sizeof(*ev) + sizeof(*rp)); |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 182 | |
| 183 | ev = (void *) skb_put(skb, sizeof(*ev)); |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 184 | put_unaligned_le16(MGMT_OP_READ_INFO, &ev->opcode); |
| 185 | |
| 186 | rp = (void *) skb_put(skb, sizeof(*rp)); |
| 187 | |
| 188 | cp = (void *) data; |
| 189 | dev_id = get_unaligned_le16(&cp->index); |
| 190 | |
| 191 | BT_DBG("request for hci%u", dev_id); |
| 192 | |
| 193 | hdev = hci_dev_get(dev_id); |
| 194 | if (!hdev) { |
| 195 | kfree_skb(skb); |
| 196 | return cmd_status(sk, MGMT_OP_READ_INFO, ENODEV); |
| 197 | } |
| 198 | |
Johan Hedberg | ab81cbf | 2010-12-15 13:53:18 +0200 | [diff] [blame] | 199 | hci_del_off_timer(hdev); |
| 200 | |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 201 | hci_dev_lock_bh(hdev); |
| 202 | |
| 203 | put_unaligned_le16(hdev->id, &rp->index); |
| 204 | rp->type = hdev->dev_type; |
| 205 | |
| 206 | rp->powered = test_bit(HCI_UP, &hdev->flags); |
| 207 | rp->discoverable = test_bit(HCI_ISCAN, &hdev->flags); |
| 208 | rp->pairable = test_bit(HCI_PSCAN, &hdev->flags); |
| 209 | |
| 210 | if (test_bit(HCI_AUTH, &hdev->flags)) |
| 211 | rp->sec_mode = 3; |
| 212 | else if (hdev->ssp_mode > 0) |
| 213 | rp->sec_mode = 4; |
| 214 | else |
| 215 | rp->sec_mode = 2; |
| 216 | |
| 217 | bacpy(&rp->bdaddr, &hdev->bdaddr); |
| 218 | memcpy(rp->features, hdev->features, 8); |
| 219 | memcpy(rp->dev_class, hdev->dev_class, 3); |
| 220 | put_unaligned_le16(hdev->manufacturer, &rp->manufacturer); |
| 221 | rp->hci_ver = hdev->hci_ver; |
| 222 | put_unaligned_le16(hdev->hci_rev, &rp->hci_rev); |
| 223 | |
| 224 | hci_dev_unlock_bh(hdev); |
| 225 | hci_dev_put(hdev); |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 226 | |
| 227 | if (sock_queue_rcv_skb(sk, skb) < 0) |
| 228 | kfree_skb(skb); |
Johan Hedberg | e41d8b4 | 2010-12-13 21:07:03 +0200 | [diff] [blame] | 229 | |
| 230 | return 0; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 231 | } |
| 232 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 233 | static void mgmt_pending_free(struct pending_cmd *cmd) |
| 234 | { |
| 235 | sock_put(cmd->sk); |
| 236 | kfree(cmd->cmd); |
| 237 | kfree(cmd); |
| 238 | } |
| 239 | |
| 240 | static int mgmt_pending_add(struct sock *sk, u16 opcode, int index, |
| 241 | void *data, u16 len) |
| 242 | { |
| 243 | struct pending_cmd *cmd; |
| 244 | |
| 245 | cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC); |
| 246 | if (!cmd) |
| 247 | return -ENOMEM; |
| 248 | |
| 249 | cmd->opcode = opcode; |
| 250 | cmd->index = index; |
| 251 | |
| 252 | cmd->cmd = kmalloc(len, GFP_ATOMIC); |
| 253 | if (!cmd->cmd) { |
| 254 | kfree(cmd); |
| 255 | return -ENOMEM; |
| 256 | } |
| 257 | |
| 258 | memcpy(cmd->cmd, data, len); |
| 259 | |
| 260 | cmd->sk = sk; |
| 261 | sock_hold(sk); |
| 262 | |
| 263 | list_add(&cmd->list, &cmd_list); |
| 264 | |
| 265 | return 0; |
| 266 | } |
| 267 | |
| 268 | static void mgmt_pending_foreach(u16 opcode, int index, |
| 269 | void (*cb)(struct pending_cmd *cmd, void *data), |
| 270 | void *data) |
| 271 | { |
| 272 | struct list_head *p, *n; |
| 273 | |
| 274 | list_for_each_safe(p, n, &cmd_list) { |
| 275 | struct pending_cmd *cmd; |
| 276 | |
| 277 | cmd = list_entry(p, struct pending_cmd, list); |
| 278 | |
| 279 | if (cmd->opcode != opcode) |
| 280 | continue; |
| 281 | |
| 282 | if (index >= 0 && cmd->index != index) |
| 283 | continue; |
| 284 | |
| 285 | cb(cmd, data); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | static struct pending_cmd *mgmt_pending_find(u16 opcode, int index) |
| 290 | { |
| 291 | struct list_head *p; |
| 292 | |
| 293 | list_for_each(p, &cmd_list) { |
| 294 | struct pending_cmd *cmd; |
| 295 | |
| 296 | cmd = list_entry(p, struct pending_cmd, list); |
| 297 | |
| 298 | if (cmd->opcode != opcode) |
| 299 | continue; |
| 300 | |
| 301 | if (index >= 0 && cmd->index != index) |
| 302 | continue; |
| 303 | |
| 304 | return cmd; |
| 305 | } |
| 306 | |
| 307 | return NULL; |
| 308 | } |
| 309 | |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 310 | static void mgmt_pending_remove(u16 opcode, int index) |
| 311 | { |
| 312 | struct pending_cmd *cmd; |
| 313 | |
| 314 | cmd = mgmt_pending_find(opcode, index); |
| 315 | if (cmd == NULL) |
| 316 | return; |
| 317 | |
| 318 | list_del(&cmd->list); |
| 319 | mgmt_pending_free(cmd); |
| 320 | } |
| 321 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 322 | static int set_powered(struct sock *sk, unsigned char *data, u16 len) |
| 323 | { |
| 324 | struct mgmt_cp_set_powered *cp; |
| 325 | struct hci_dev *hdev; |
| 326 | u16 dev_id; |
| 327 | int ret, up; |
| 328 | |
| 329 | cp = (void *) data; |
| 330 | dev_id = get_unaligned_le16(&cp->index); |
| 331 | |
| 332 | BT_DBG("request for hci%u", dev_id); |
| 333 | |
| 334 | hdev = hci_dev_get(dev_id); |
| 335 | if (!hdev) |
| 336 | return cmd_status(sk, MGMT_OP_SET_POWERED, ENODEV); |
| 337 | |
| 338 | hci_dev_lock_bh(hdev); |
| 339 | |
| 340 | up = test_bit(HCI_UP, &hdev->flags); |
| 341 | if ((cp->powered && up) || (!cp->powered && !up)) { |
| 342 | ret = cmd_status(sk, MGMT_OP_SET_POWERED, EALREADY); |
| 343 | goto failed; |
| 344 | } |
| 345 | |
| 346 | if (mgmt_pending_find(MGMT_OP_SET_POWERED, dev_id)) { |
| 347 | ret = cmd_status(sk, MGMT_OP_SET_POWERED, EBUSY); |
| 348 | goto failed; |
| 349 | } |
| 350 | |
| 351 | ret = mgmt_pending_add(sk, MGMT_OP_SET_POWERED, dev_id, data, len); |
| 352 | if (ret < 0) |
| 353 | goto failed; |
| 354 | |
| 355 | if (cp->powered) |
| 356 | queue_work(hdev->workqueue, &hdev->power_on); |
| 357 | else |
| 358 | queue_work(hdev->workqueue, &hdev->power_off); |
| 359 | |
| 360 | ret = 0; |
| 361 | |
| 362 | failed: |
| 363 | hci_dev_unlock_bh(hdev); |
| 364 | hci_dev_put(hdev); |
| 365 | return ret; |
| 366 | } |
| 367 | |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 368 | static int set_discoverable(struct sock *sk, unsigned char *data, u16 len) |
| 369 | { |
| 370 | struct mgmt_cp_set_discoverable *cp; |
| 371 | struct hci_dev *hdev; |
| 372 | u16 dev_id; |
| 373 | u8 scan; |
| 374 | int err; |
| 375 | |
| 376 | cp = (void *) data; |
| 377 | dev_id = get_unaligned_le16(&cp->index); |
| 378 | |
| 379 | BT_DBG("request for hci%u", dev_id); |
| 380 | |
| 381 | hdev = hci_dev_get(dev_id); |
| 382 | if (!hdev) |
| 383 | return cmd_status(sk, MGMT_OP_SET_DISCOVERABLE, ENODEV); |
| 384 | |
| 385 | hci_dev_lock_bh(hdev); |
| 386 | |
| 387 | if (!test_bit(HCI_UP, &hdev->flags)) { |
| 388 | err = cmd_status(sk, MGMT_OP_SET_DISCOVERABLE, ENETDOWN); |
| 389 | goto failed; |
| 390 | } |
| 391 | |
| 392 | if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, dev_id) || |
| 393 | mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, dev_id) || |
| 394 | hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE)) { |
| 395 | err = cmd_status(sk, MGMT_OP_SET_DISCOVERABLE, EBUSY); |
| 396 | goto failed; |
| 397 | } |
| 398 | |
| 399 | if (cp->discoverable == test_bit(HCI_ISCAN, &hdev->flags) && |
| 400 | test_bit(HCI_PSCAN, &hdev->flags)) { |
| 401 | err = cmd_status(sk, MGMT_OP_SET_DISCOVERABLE, EALREADY); |
| 402 | goto failed; |
| 403 | } |
| 404 | |
| 405 | err = mgmt_pending_add(sk, MGMT_OP_SET_DISCOVERABLE, dev_id, data, len); |
| 406 | if (err < 0) |
| 407 | goto failed; |
| 408 | |
| 409 | scan = SCAN_PAGE; |
| 410 | |
| 411 | if (cp->discoverable) |
| 412 | scan |= SCAN_INQUIRY; |
| 413 | |
| 414 | err = hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
| 415 | if (err < 0) |
| 416 | mgmt_pending_remove(MGMT_OP_SET_DISCOVERABLE, dev_id); |
| 417 | |
| 418 | failed: |
| 419 | hci_dev_unlock_bh(hdev); |
| 420 | hci_dev_put(hdev); |
| 421 | |
| 422 | return err; |
| 423 | } |
| 424 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 425 | int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen) |
| 426 | { |
| 427 | unsigned char *buf; |
| 428 | struct mgmt_hdr *hdr; |
| 429 | u16 opcode, len; |
| 430 | int err; |
| 431 | |
| 432 | BT_DBG("got %zu bytes", msglen); |
| 433 | |
| 434 | if (msglen < sizeof(*hdr)) |
| 435 | return -EINVAL; |
| 436 | |
| 437 | buf = kmalloc(msglen, GFP_ATOMIC); |
| 438 | if (!buf) |
| 439 | return -ENOMEM; |
| 440 | |
| 441 | if (memcpy_fromiovec(buf, msg->msg_iov, msglen)) { |
| 442 | err = -EFAULT; |
| 443 | goto done; |
| 444 | } |
| 445 | |
| 446 | hdr = (struct mgmt_hdr *) buf; |
| 447 | opcode = get_unaligned_le16(&hdr->opcode); |
| 448 | len = get_unaligned_le16(&hdr->len); |
| 449 | |
| 450 | if (len != msglen - sizeof(*hdr)) { |
| 451 | err = -EINVAL; |
| 452 | goto done; |
| 453 | } |
| 454 | |
| 455 | switch (opcode) { |
Johan Hedberg | 02d9812 | 2010-12-13 21:07:04 +0200 | [diff] [blame] | 456 | case MGMT_OP_READ_VERSION: |
| 457 | err = read_version(sk); |
| 458 | break; |
Johan Hedberg | faba42e | 2010-12-13 21:07:05 +0200 | [diff] [blame] | 459 | case MGMT_OP_READ_INDEX_LIST: |
| 460 | err = read_index_list(sk); |
| 461 | break; |
Johan Hedberg | f7b64e6 | 2010-12-13 21:07:06 +0200 | [diff] [blame] | 462 | case MGMT_OP_READ_INFO: |
| 463 | err = read_controller_info(sk, buf + sizeof(*hdr), len); |
| 464 | break; |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 465 | case MGMT_OP_SET_POWERED: |
| 466 | err = set_powered(sk, buf + sizeof(*hdr), len); |
| 467 | break; |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 468 | case MGMT_OP_SET_DISCOVERABLE: |
| 469 | err = set_discoverable(sk, buf + sizeof(*hdr), len); |
| 470 | break; |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 471 | default: |
| 472 | BT_DBG("Unknown op %u", opcode); |
Johan Hedberg | e41d8b4 | 2010-12-13 21:07:03 +0200 | [diff] [blame] | 473 | err = cmd_status(sk, opcode, 0x01); |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 474 | break; |
| 475 | } |
| 476 | |
Johan Hedberg | e41d8b4 | 2010-12-13 21:07:03 +0200 | [diff] [blame] | 477 | if (err < 0) |
| 478 | goto done; |
| 479 | |
Johan Hedberg | 0381101 | 2010-12-08 00:21:06 +0200 | [diff] [blame] | 480 | err = msglen; |
| 481 | |
| 482 | done: |
| 483 | kfree(buf); |
| 484 | return err; |
| 485 | } |
Johan Hedberg | c71e97b | 2010-12-13 21:07:07 +0200 | [diff] [blame] | 486 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 487 | static int mgmt_event(u16 event, void *data, u16 data_len, struct sock *skip_sk) |
Johan Hedberg | c71e97b | 2010-12-13 21:07:07 +0200 | [diff] [blame] | 488 | { |
| 489 | struct sk_buff *skb; |
| 490 | struct mgmt_hdr *hdr; |
| 491 | |
| 492 | skb = alloc_skb(sizeof(*hdr) + data_len, GFP_ATOMIC); |
| 493 | if (!skb) |
| 494 | return -ENOMEM; |
| 495 | |
| 496 | bt_cb(skb)->channel = HCI_CHANNEL_CONTROL; |
| 497 | |
| 498 | hdr = (void *) skb_put(skb, sizeof(*hdr)); |
| 499 | hdr->opcode = cpu_to_le16(event); |
| 500 | hdr->len = cpu_to_le16(data_len); |
| 501 | |
| 502 | memcpy(skb_put(skb, data_len), data, data_len); |
| 503 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 504 | hci_send_to_sock(NULL, skb, skip_sk); |
Johan Hedberg | c71e97b | 2010-12-13 21:07:07 +0200 | [diff] [blame] | 505 | kfree_skb(skb); |
| 506 | |
| 507 | return 0; |
| 508 | } |
| 509 | |
| 510 | int mgmt_index_added(u16 index) |
| 511 | { |
| 512 | struct mgmt_ev_index_added ev; |
| 513 | |
| 514 | put_unaligned_le16(index, &ev.index); |
| 515 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 516 | return mgmt_event(MGMT_EV_INDEX_ADDED, &ev, sizeof(ev), NULL); |
Johan Hedberg | c71e97b | 2010-12-13 21:07:07 +0200 | [diff] [blame] | 517 | } |
| 518 | |
| 519 | int mgmt_index_removed(u16 index) |
| 520 | { |
| 521 | struct mgmt_ev_index_added ev; |
| 522 | |
| 523 | put_unaligned_le16(index, &ev.index); |
| 524 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 525 | return mgmt_event(MGMT_EV_INDEX_REMOVED, &ev, sizeof(ev), NULL); |
| 526 | } |
| 527 | |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 528 | struct cmd_lookup { |
| 529 | u8 value; |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 530 | struct sock *sk; |
| 531 | }; |
| 532 | |
| 533 | static void power_rsp(struct pending_cmd *cmd, void *data) |
| 534 | { |
| 535 | struct mgmt_hdr *hdr; |
| 536 | struct mgmt_ev_cmd_complete *ev; |
| 537 | struct mgmt_rp_set_powered *rp; |
| 538 | struct mgmt_cp_set_powered *cp = cmd->cmd; |
| 539 | struct sk_buff *skb; |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 540 | struct cmd_lookup *match = data; |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 541 | |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 542 | if (cp->powered != match->value) |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 543 | return; |
| 544 | |
| 545 | skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC); |
| 546 | if (!skb) |
| 547 | return; |
| 548 | |
| 549 | hdr = (void *) skb_put(skb, sizeof(*hdr)); |
| 550 | hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE); |
| 551 | hdr->len = cpu_to_le16(sizeof(*ev) + sizeof(*rp)); |
| 552 | |
| 553 | ev = (void *) skb_put(skb, sizeof(*ev)); |
| 554 | put_unaligned_le16(cmd->opcode, &ev->opcode); |
| 555 | |
| 556 | rp = (void *) skb_put(skb, sizeof(*rp)); |
| 557 | put_unaligned_le16(cmd->index, &rp->index); |
| 558 | rp->powered = cp->powered; |
| 559 | |
| 560 | if (sock_queue_rcv_skb(cmd->sk, skb) < 0) |
| 561 | kfree_skb(skb); |
| 562 | |
| 563 | list_del(&cmd->list); |
| 564 | |
| 565 | if (match->sk == NULL) { |
| 566 | match->sk = cmd->sk; |
| 567 | sock_hold(match->sk); |
| 568 | } |
| 569 | |
| 570 | mgmt_pending_free(cmd); |
Johan Hedberg | c71e97b | 2010-12-13 21:07:07 +0200 | [diff] [blame] | 571 | } |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 572 | |
| 573 | int mgmt_powered(u16 index, u8 powered) |
| 574 | { |
| 575 | struct mgmt_ev_powered ev; |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 576 | struct cmd_lookup match = { powered, NULL }; |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 577 | int ret; |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 578 | |
| 579 | put_unaligned_le16(index, &ev.index); |
| 580 | ev.powered = powered; |
| 581 | |
Johan Hedberg | eec8d2b | 2010-12-16 10:17:38 +0200 | [diff] [blame] | 582 | mgmt_pending_foreach(MGMT_OP_SET_POWERED, index, power_rsp, &match); |
| 583 | |
| 584 | ret = mgmt_event(MGMT_EV_POWERED, &ev, sizeof(ev), match.sk); |
| 585 | |
| 586 | if (match.sk) |
| 587 | sock_put(match.sk); |
| 588 | |
| 589 | return ret; |
Johan Hedberg | 5add6af | 2010-12-16 10:00:37 +0200 | [diff] [blame] | 590 | } |
Johan Hedberg | 73f22f6 | 2010-12-29 16:00:25 +0200 | [diff] [blame^] | 591 | |
| 592 | static void discoverable_rsp(struct pending_cmd *cmd, void *data) |
| 593 | { |
| 594 | struct mgmt_cp_set_discoverable *cp = cmd->cmd; |
| 595 | struct cmd_lookup *match = data; |
| 596 | struct sk_buff *skb; |
| 597 | struct mgmt_hdr *hdr; |
| 598 | struct mgmt_ev_cmd_complete *ev; |
| 599 | struct mgmt_rp_set_discoverable *rp; |
| 600 | |
| 601 | if (cp->discoverable != match->value) |
| 602 | return; |
| 603 | |
| 604 | skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC); |
| 605 | if (!skb) |
| 606 | return; |
| 607 | |
| 608 | hdr = (void *) skb_put(skb, sizeof(*hdr)); |
| 609 | hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE); |
| 610 | hdr->len = cpu_to_le16(sizeof(*ev) + sizeof(*rp)); |
| 611 | |
| 612 | ev = (void *) skb_put(skb, sizeof(*ev)); |
| 613 | put_unaligned_le16(MGMT_OP_SET_DISCOVERABLE, &ev->opcode); |
| 614 | |
| 615 | rp = (void *) skb_put(skb, sizeof(*rp)); |
| 616 | put_unaligned_le16(cmd->index, &rp->index); |
| 617 | rp->discoverable = cp->discoverable; |
| 618 | |
| 619 | if (sock_queue_rcv_skb(cmd->sk, skb) < 0) |
| 620 | kfree_skb(skb); |
| 621 | |
| 622 | list_del(&cmd->list); |
| 623 | |
| 624 | if (match->sk == NULL) { |
| 625 | match->sk = cmd->sk; |
| 626 | sock_hold(match->sk); |
| 627 | } |
| 628 | |
| 629 | mgmt_pending_free(cmd); |
| 630 | } |
| 631 | |
| 632 | int mgmt_discoverable(u16 index, u8 discoverable) |
| 633 | { |
| 634 | struct mgmt_ev_discoverable ev; |
| 635 | struct cmd_lookup match = { discoverable, NULL }; |
| 636 | int ret; |
| 637 | |
| 638 | put_unaligned_le16(index, &ev.index); |
| 639 | ev.discoverable = discoverable; |
| 640 | |
| 641 | mgmt_pending_foreach(MGMT_OP_SET_DISCOVERABLE, index, |
| 642 | discoverable_rsp, &match); |
| 643 | |
| 644 | ret = mgmt_event(MGMT_EV_DISCOVERABLE, &ev, sizeof(ev), match.sk); |
| 645 | |
| 646 | if (match.sk) |
| 647 | sock_put(match.sk); |
| 648 | |
| 649 | return ret; |
| 650 | } |