YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | BlueZ - Bluetooth protocol stack for Linux |
| 3 | Copyright (C) 2000-2001 Qualcomm Incorporated |
| 4 | |
| 5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License version 2 as |
| 9 | published by the Free Software Foundation; |
| 10 | |
| 11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | SOFTWARE IS DISCLAIMED. |
| 23 | */ |
| 24 | |
| 25 | /* Bluetooth HCI connection handling. */ |
| 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/module.h> |
| 28 | |
| 29 | #include <linux/types.h> |
| 30 | #include <linux/errno.h> |
| 31 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/slab.h> |
| 33 | #include <linux/poll.h> |
| 34 | #include <linux/fcntl.h> |
| 35 | #include <linux/init.h> |
| 36 | #include <linux/skbuff.h> |
| 37 | #include <linux/interrupt.h> |
| 38 | #include <linux/notifier.h> |
| 39 | #include <net/sock.h> |
| 40 | |
| 41 | #include <asm/system.h> |
| 42 | #include <asm/uaccess.h> |
| 43 | #include <asm/unaligned.h> |
| 44 | |
| 45 | #include <net/bluetooth/bluetooth.h> |
| 46 | #include <net/bluetooth/hci_core.h> |
| 47 | |
| 48 | #ifndef CONFIG_BT_HCI_CORE_DEBUG |
| 49 | #undef BT_DBG |
| 50 | #define BT_DBG(D...) |
| 51 | #endif |
| 52 | |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 53 | void hci_acl_connect(struct hci_conn *conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | { |
| 55 | struct hci_dev *hdev = conn->hdev; |
| 56 | struct inquiry_entry *ie; |
| 57 | struct hci_cp_create_conn cp; |
| 58 | |
| 59 | BT_DBG("%p", conn); |
| 60 | |
| 61 | conn->state = BT_CONNECT; |
| 62 | conn->out = 1; |
| 63 | conn->link_mode = HCI_LM_MASTER; |
| 64 | |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 65 | conn->attempt++; |
| 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | memset(&cp, 0, sizeof(cp)); |
| 68 | bacpy(&cp.bdaddr, &conn->dst); |
| 69 | cp.pscan_rep_mode = 0x02; |
| 70 | |
| 71 | if ((ie = hci_inquiry_cache_lookup(hdev, &conn->dst)) && |
| 72 | inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
| 73 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; |
| 74 | cp.pscan_mode = ie->data.pscan_mode; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 75 | cp.clock_offset = ie->data.clock_offset | cpu_to_le16(0x8000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
| 77 | } |
| 78 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 79 | cp.pkt_type = cpu_to_le16(hdev->pkt_type & ACL_PTYPE_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
| 81 | cp.role_switch = 0x01; |
| 82 | else |
| 83 | cp.role_switch = 0x00; |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 84 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | hci_send_cmd(hdev, OGF_LINK_CTL, OCF_CREATE_CONN, sizeof(cp), &cp); |
| 86 | } |
| 87 | |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 88 | static void hci_acl_connect_cancel(struct hci_conn *conn) |
| 89 | { |
| 90 | struct hci_cp_create_conn_cancel cp; |
| 91 | |
| 92 | BT_DBG("%p", conn); |
| 93 | |
| 94 | if (conn->hdev->hci_ver < 2) |
| 95 | return; |
| 96 | |
| 97 | bacpy(&cp.bdaddr, &conn->dst); |
| 98 | hci_send_cmd(conn->hdev, OGF_LINK_CTL, |
| 99 | OCF_CREATE_CONN_CANCEL, sizeof(cp), &cp); |
| 100 | } |
| 101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | void hci_acl_disconn(struct hci_conn *conn, __u8 reason) |
| 103 | { |
| 104 | struct hci_cp_disconnect cp; |
| 105 | |
| 106 | BT_DBG("%p", conn); |
| 107 | |
| 108 | conn->state = BT_DISCONN; |
| 109 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 110 | cp.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | cp.reason = reason; |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 112 | hci_send_cmd(conn->hdev, OGF_LINK_CTL, |
| 113 | OCF_DISCONNECT, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | void hci_add_sco(struct hci_conn *conn, __u16 handle) |
| 117 | { |
| 118 | struct hci_dev *hdev = conn->hdev; |
| 119 | struct hci_cp_add_sco cp; |
| 120 | |
| 121 | BT_DBG("%p", conn); |
| 122 | |
| 123 | conn->state = BT_CONNECT; |
| 124 | conn->out = 1; |
| 125 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 126 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 127 | cp.pkt_type = cpu_to_le16(hdev->pkt_type & SCO_PTYPE_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | hci_send_cmd(hdev, OGF_LINK_CTL, OCF_ADD_SCO, sizeof(cp), &cp); |
| 130 | } |
| 131 | |
| 132 | static void hci_conn_timeout(unsigned long arg) |
| 133 | { |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 134 | struct hci_conn *conn = (void *) arg; |
| 135 | struct hci_dev *hdev = conn->hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
| 137 | BT_DBG("conn %p state %d", conn, conn->state); |
| 138 | |
| 139 | if (atomic_read(&conn->refcnt)) |
| 140 | return; |
| 141 | |
| 142 | hci_dev_lock(hdev); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 143 | |
| 144 | switch (conn->state) { |
| 145 | case BT_CONNECT: |
| 146 | hci_acl_connect_cancel(conn); |
| 147 | break; |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 148 | case BT_CONNECTED: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | hci_acl_disconn(conn, 0x13); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 150 | break; |
| 151 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | conn->state = BT_CLOSED; |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 153 | break; |
| 154 | } |
| 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 159 | static void hci_conn_idle(unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | { |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 161 | struct hci_conn *conn = (void *) arg; |
| 162 | |
| 163 | BT_DBG("conn %p mode %d", conn, conn->mode); |
| 164 | |
| 165 | hci_conn_enter_sniff_mode(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) |
| 169 | { |
| 170 | struct hci_conn *conn; |
| 171 | |
| 172 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); |
| 173 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 174 | conn = kzalloc(sizeof(struct hci_conn), GFP_ATOMIC); |
| 175 | if (!conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | bacpy(&conn->dst, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | conn->hdev = hdev; |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 180 | conn->type = type; |
| 181 | conn->mode = HCI_CM_ACTIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | conn->state = BT_OPEN; |
| 183 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 184 | conn->power_save = 1; |
| 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | skb_queue_head_init(&conn->data_q); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 187 | |
| 188 | init_timer(&conn->disc_timer); |
| 189 | conn->disc_timer.function = hci_conn_timeout; |
| 190 | conn->disc_timer.data = (unsigned long) conn; |
| 191 | |
| 192 | init_timer(&conn->idle_timer); |
| 193 | conn->idle_timer.function = hci_conn_idle; |
| 194 | conn->idle_timer.data = (unsigned long) conn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
| 196 | atomic_set(&conn->refcnt, 0); |
| 197 | |
| 198 | hci_dev_hold(hdev); |
| 199 | |
| 200 | tasklet_disable(&hdev->tx_task); |
| 201 | |
| 202 | hci_conn_hash_add(hdev, conn); |
| 203 | if (hdev->notify) |
| 204 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); |
| 205 | |
Marcel Holtmann | b219e3a | 2006-07-06 12:38:46 +0200 | [diff] [blame] | 206 | hci_conn_add_sysfs(conn); |
| 207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | tasklet_enable(&hdev->tx_task); |
| 209 | |
| 210 | return conn; |
| 211 | } |
| 212 | |
| 213 | int hci_conn_del(struct hci_conn *conn) |
| 214 | { |
| 215 | struct hci_dev *hdev = conn->hdev; |
| 216 | |
| 217 | BT_DBG("%s conn %p handle %d", hdev->name, conn, conn->handle); |
| 218 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 219 | del_timer(&conn->idle_timer); |
| 220 | |
| 221 | del_timer(&conn->disc_timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 223 | if (conn->type == ACL_LINK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | struct hci_conn *sco = conn->link; |
| 225 | if (sco) |
| 226 | sco->link = NULL; |
| 227 | |
| 228 | /* Unacked frames */ |
| 229 | hdev->acl_cnt += conn->sent; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 230 | } else { |
| 231 | struct hci_conn *acl = conn->link; |
| 232 | if (acl) { |
| 233 | acl->link = NULL; |
| 234 | hci_conn_put(acl); |
| 235 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | tasklet_disable(&hdev->tx_task); |
| 239 | |
Marcel Holtmann | b219e3a | 2006-07-06 12:38:46 +0200 | [diff] [blame] | 240 | hci_conn_del_sysfs(conn); |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | hci_conn_hash_del(hdev, conn); |
| 243 | if (hdev->notify) |
| 244 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); |
| 245 | |
| 246 | tasklet_enable(&hdev->tx_task); |
| 247 | |
| 248 | skb_queue_purge(&conn->data_q); |
| 249 | |
| 250 | hci_dev_put(hdev); |
| 251 | |
Marcel Holtmann | b219e3a | 2006-07-06 12:38:46 +0200 | [diff] [blame] | 252 | /* will free via device release */ |
| 253 | put_device(&conn->dev); |
| 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) |
| 259 | { |
| 260 | int use_src = bacmp(src, BDADDR_ANY); |
| 261 | struct hci_dev *hdev = NULL; |
| 262 | struct list_head *p; |
| 263 | |
| 264 | BT_DBG("%s -> %s", batostr(src), batostr(dst)); |
| 265 | |
| 266 | read_lock_bh(&hci_dev_list_lock); |
| 267 | |
| 268 | list_for_each(p, &hci_dev_list) { |
| 269 | struct hci_dev *d = list_entry(p, struct hci_dev, list); |
| 270 | |
| 271 | if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags)) |
| 272 | continue; |
| 273 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 274 | /* Simple routing: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | * No source address - find interface with bdaddr != dst |
| 276 | * Source address - find interface with bdaddr == src |
| 277 | */ |
| 278 | |
| 279 | if (use_src) { |
| 280 | if (!bacmp(&d->bdaddr, src)) { |
| 281 | hdev = d; break; |
| 282 | } |
| 283 | } else { |
| 284 | if (bacmp(&d->bdaddr, dst)) { |
| 285 | hdev = d; break; |
| 286 | } |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | if (hdev) |
| 291 | hdev = hci_dev_hold(hdev); |
| 292 | |
| 293 | read_unlock_bh(&hci_dev_list_lock); |
| 294 | return hdev; |
| 295 | } |
| 296 | EXPORT_SYMBOL(hci_get_route); |
| 297 | |
| 298 | /* Create SCO or ACL connection. |
| 299 | * Device _must_ be locked */ |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 300 | struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | { |
| 302 | struct hci_conn *acl; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 303 | struct hci_conn *sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | |
| 305 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); |
| 306 | |
| 307 | if (!(acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst))) { |
| 308 | if (!(acl = hci_conn_add(hdev, ACL_LINK, dst))) |
| 309 | return NULL; |
| 310 | } |
| 311 | |
| 312 | hci_conn_hold(acl); |
| 313 | |
| 314 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) |
| 315 | hci_acl_connect(acl); |
| 316 | |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 317 | if (type == ACL_LINK) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return acl; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 319 | |
| 320 | if (!(sco = hci_conn_hash_lookup_ba(hdev, type, dst))) { |
| 321 | if (!(sco = hci_conn_add(hdev, type, dst))) { |
| 322 | hci_conn_put(acl); |
| 323 | return NULL; |
| 324 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | } |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 326 | |
| 327 | acl->link = sco; |
| 328 | sco->link = acl; |
| 329 | |
| 330 | hci_conn_hold(sco); |
| 331 | |
| 332 | if (acl->state == BT_CONNECTED && |
| 333 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) |
| 334 | hci_add_sco(sco, acl->handle); |
| 335 | |
| 336 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } |
| 338 | EXPORT_SYMBOL(hci_connect); |
| 339 | |
| 340 | /* Authenticate remote device */ |
| 341 | int hci_conn_auth(struct hci_conn *conn) |
| 342 | { |
| 343 | BT_DBG("conn %p", conn); |
| 344 | |
| 345 | if (conn->link_mode & HCI_LM_AUTH) |
| 346 | return 1; |
| 347 | |
| 348 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { |
| 349 | struct hci_cp_auth_requested cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 350 | cp.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | hci_send_cmd(conn->hdev, OGF_LINK_CTL, OCF_AUTH_REQUESTED, sizeof(cp), &cp); |
| 352 | } |
| 353 | return 0; |
| 354 | } |
| 355 | EXPORT_SYMBOL(hci_conn_auth); |
| 356 | |
| 357 | /* Enable encryption */ |
| 358 | int hci_conn_encrypt(struct hci_conn *conn) |
| 359 | { |
| 360 | BT_DBG("conn %p", conn); |
| 361 | |
| 362 | if (conn->link_mode & HCI_LM_ENCRYPT) |
| 363 | return 1; |
| 364 | |
| 365 | if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) |
| 366 | return 0; |
| 367 | |
| 368 | if (hci_conn_auth(conn)) { |
| 369 | struct hci_cp_set_conn_encrypt cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 370 | cp.handle = cpu_to_le16(conn->handle); |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 371 | cp.encrypt = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | hci_send_cmd(conn->hdev, OGF_LINK_CTL, OCF_SET_CONN_ENCRYPT, sizeof(cp), &cp); |
| 373 | } |
| 374 | return 0; |
| 375 | } |
| 376 | EXPORT_SYMBOL(hci_conn_encrypt); |
| 377 | |
| 378 | /* Change link key */ |
| 379 | int hci_conn_change_link_key(struct hci_conn *conn) |
| 380 | { |
| 381 | BT_DBG("conn %p", conn); |
| 382 | |
| 383 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { |
| 384 | struct hci_cp_change_conn_link_key cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 385 | cp.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | hci_send_cmd(conn->hdev, OGF_LINK_CTL, OCF_CHANGE_CONN_LINK_KEY, sizeof(cp), &cp); |
| 387 | } |
| 388 | return 0; |
| 389 | } |
| 390 | EXPORT_SYMBOL(hci_conn_change_link_key); |
| 391 | |
| 392 | /* Switch role */ |
| 393 | int hci_conn_switch_role(struct hci_conn *conn, uint8_t role) |
| 394 | { |
| 395 | BT_DBG("conn %p", conn); |
| 396 | |
| 397 | if (!role && conn->link_mode & HCI_LM_MASTER) |
| 398 | return 1; |
| 399 | |
| 400 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->pend)) { |
| 401 | struct hci_cp_switch_role cp; |
| 402 | bacpy(&cp.bdaddr, &conn->dst); |
| 403 | cp.role = role; |
| 404 | hci_send_cmd(conn->hdev, OGF_LINK_POLICY, OCF_SWITCH_ROLE, sizeof(cp), &cp); |
| 405 | } |
| 406 | return 0; |
| 407 | } |
| 408 | EXPORT_SYMBOL(hci_conn_switch_role); |
| 409 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 410 | /* Enter active mode */ |
| 411 | void hci_conn_enter_active_mode(struct hci_conn *conn) |
| 412 | { |
| 413 | struct hci_dev *hdev = conn->hdev; |
| 414 | |
| 415 | BT_DBG("conn %p mode %d", conn, conn->mode); |
| 416 | |
| 417 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 418 | return; |
| 419 | |
| 420 | if (conn->mode != HCI_CM_SNIFF || !conn->power_save) |
| 421 | goto timer; |
| 422 | |
| 423 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { |
| 424 | struct hci_cp_exit_sniff_mode cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 425 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 426 | hci_send_cmd(hdev, OGF_LINK_POLICY, |
| 427 | OCF_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
| 428 | } |
| 429 | |
| 430 | timer: |
| 431 | if (hdev->idle_timeout > 0) |
| 432 | mod_timer(&conn->idle_timer, |
| 433 | jiffies + msecs_to_jiffies(hdev->idle_timeout)); |
| 434 | } |
| 435 | |
| 436 | /* Enter sniff mode */ |
| 437 | void hci_conn_enter_sniff_mode(struct hci_conn *conn) |
| 438 | { |
| 439 | struct hci_dev *hdev = conn->hdev; |
| 440 | |
| 441 | BT_DBG("conn %p mode %d", conn, conn->mode); |
| 442 | |
| 443 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 444 | return; |
| 445 | |
| 446 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) |
| 447 | return; |
| 448 | |
| 449 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) |
| 450 | return; |
| 451 | |
| 452 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { |
| 453 | struct hci_cp_sniff_subrate cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 454 | cp.handle = cpu_to_le16(conn->handle); |
| 455 | cp.max_latency = cpu_to_le16(0); |
| 456 | cp.min_remote_timeout = cpu_to_le16(0); |
| 457 | cp.min_local_timeout = cpu_to_le16(0); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 458 | hci_send_cmd(hdev, OGF_LINK_POLICY, |
| 459 | OCF_SNIFF_SUBRATE, sizeof(cp), &cp); |
| 460 | } |
| 461 | |
| 462 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { |
| 463 | struct hci_cp_sniff_mode cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 464 | cp.handle = cpu_to_le16(conn->handle); |
| 465 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); |
| 466 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); |
| 467 | cp.attempt = cpu_to_le16(4); |
| 468 | cp.timeout = cpu_to_le16(1); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 469 | hci_send_cmd(hdev, OGF_LINK_POLICY, |
| 470 | OCF_SNIFF_MODE, sizeof(cp), &cp); |
| 471 | } |
| 472 | } |
| 473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | /* Drop all connection on the device */ |
| 475 | void hci_conn_hash_flush(struct hci_dev *hdev) |
| 476 | { |
| 477 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 478 | struct list_head *p; |
| 479 | |
| 480 | BT_DBG("hdev %s", hdev->name); |
| 481 | |
| 482 | p = h->list.next; |
| 483 | while (p != &h->list) { |
| 484 | struct hci_conn *c; |
| 485 | |
| 486 | c = list_entry(p, struct hci_conn, list); |
| 487 | p = p->next; |
| 488 | |
| 489 | c->state = BT_CLOSED; |
| 490 | |
| 491 | hci_proto_disconn_ind(c, 0x16); |
| 492 | hci_conn_del(c); |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | int hci_get_conn_list(void __user *arg) |
| 497 | { |
| 498 | struct hci_conn_list_req req, *cl; |
| 499 | struct hci_conn_info *ci; |
| 500 | struct hci_dev *hdev; |
| 501 | struct list_head *p; |
| 502 | int n = 0, size, err; |
| 503 | |
| 504 | if (copy_from_user(&req, arg, sizeof(req))) |
| 505 | return -EFAULT; |
| 506 | |
| 507 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) |
| 508 | return -EINVAL; |
| 509 | |
| 510 | size = sizeof(req) + req.conn_num * sizeof(*ci); |
| 511 | |
Jesper Juhl | 12fe2c5 | 2006-01-10 13:08:21 -0800 | [diff] [blame] | 512 | if (!(cl = kmalloc(size, GFP_KERNEL))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | return -ENOMEM; |
| 514 | |
| 515 | if (!(hdev = hci_dev_get(req.dev_id))) { |
| 516 | kfree(cl); |
| 517 | return -ENODEV; |
| 518 | } |
| 519 | |
| 520 | ci = cl->conn_info; |
| 521 | |
| 522 | hci_dev_lock_bh(hdev); |
| 523 | list_for_each(p, &hdev->conn_hash.list) { |
| 524 | register struct hci_conn *c; |
| 525 | c = list_entry(p, struct hci_conn, list); |
| 526 | |
| 527 | bacpy(&(ci + n)->bdaddr, &c->dst); |
| 528 | (ci + n)->handle = c->handle; |
| 529 | (ci + n)->type = c->type; |
| 530 | (ci + n)->out = c->out; |
| 531 | (ci + n)->state = c->state; |
| 532 | (ci + n)->link_mode = c->link_mode; |
| 533 | if (++n >= req.conn_num) |
| 534 | break; |
| 535 | } |
| 536 | hci_dev_unlock_bh(hdev); |
| 537 | |
| 538 | cl->dev_id = hdev->id; |
| 539 | cl->conn_num = n; |
| 540 | size = sizeof(req) + n * sizeof(*ci); |
| 541 | |
| 542 | hci_dev_put(hdev); |
| 543 | |
| 544 | err = copy_to_user(arg, cl, size); |
| 545 | kfree(cl); |
| 546 | |
| 547 | return err ? -EFAULT : 0; |
| 548 | } |
| 549 | |
| 550 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) |
| 551 | { |
| 552 | struct hci_conn_info_req req; |
| 553 | struct hci_conn_info ci; |
| 554 | struct hci_conn *conn; |
| 555 | char __user *ptr = arg + sizeof(req); |
| 556 | |
| 557 | if (copy_from_user(&req, arg, sizeof(req))) |
| 558 | return -EFAULT; |
| 559 | |
| 560 | hci_dev_lock_bh(hdev); |
| 561 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
| 562 | if (conn) { |
| 563 | bacpy(&ci.bdaddr, &conn->dst); |
| 564 | ci.handle = conn->handle; |
| 565 | ci.type = conn->type; |
| 566 | ci.out = conn->out; |
| 567 | ci.state = conn->state; |
| 568 | ci.link_mode = conn->link_mode; |
| 569 | } |
| 570 | hci_dev_unlock_bh(hdev); |
| 571 | |
| 572 | if (!conn) |
| 573 | return -ENOENT; |
| 574 | |
| 575 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; |
| 576 | } |