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 |
Ron Shaffer | 2d0a034 | 2010-05-28 11:53:46 -0400 | [diff] [blame] | 3 | Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 42 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <asm/unaligned.h> |
| 44 | |
| 45 | #include <net/bluetooth/bluetooth.h> |
| 46 | #include <net/bluetooth/hci_core.h> |
| 47 | |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 48 | static void hci_le_connect(struct hci_conn *conn) |
| 49 | { |
| 50 | struct hci_dev *hdev = conn->hdev; |
| 51 | struct hci_cp_le_create_conn cp; |
| 52 | |
| 53 | conn->state = BT_CONNECT; |
| 54 | conn->out = 1; |
Vinicius Costa Gomes | b92a622 | 2011-02-10 22:38:52 -0300 | [diff] [blame] | 55 | conn->link_mode |= HCI_LM_MASTER; |
Vinicius Costa Gomes | 7b5c0d5 | 2011-06-09 18:50:50 -0300 | [diff] [blame] | 56 | conn->sec_level = BT_SECURITY_LOW; |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 57 | |
| 58 | memset(&cp, 0, sizeof(cp)); |
Anderson Lizardo | 0e83391 | 2011-07-27 18:40:09 -0300 | [diff] [blame] | 59 | cp.scan_interval = cpu_to_le16(0x0060); |
| 60 | cp.scan_window = cpu_to_le16(0x0030); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 61 | bacpy(&cp.peer_addr, &conn->dst); |
Andre Guedes | 6d3ce0e7 | 2011-05-31 14:20:57 -0300 | [diff] [blame] | 62 | cp.peer_addr_type = conn->dst_type; |
Anderson Lizardo | 0e83391 | 2011-07-27 18:40:09 -0300 | [diff] [blame] | 63 | cp.conn_interval_min = cpu_to_le16(0x0028); |
| 64 | cp.conn_interval_max = cpu_to_le16(0x0038); |
| 65 | cp.supervision_timeout = cpu_to_le16(0x002a); |
| 66 | cp.min_ce_len = cpu_to_le16(0x0000); |
| 67 | cp.max_ce_len = cpu_to_le16(0x0000); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 68 | |
| 69 | hci_send_cmd(hdev, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp); |
| 70 | } |
| 71 | |
| 72 | static void hci_le_connect_cancel(struct hci_conn *conn) |
| 73 | { |
| 74 | hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL); |
| 75 | } |
| 76 | |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 77 | void hci_acl_connect(struct hci_conn *conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | { |
| 79 | struct hci_dev *hdev = conn->hdev; |
| 80 | struct inquiry_entry *ie; |
| 81 | struct hci_cp_create_conn cp; |
| 82 | |
| 83 | BT_DBG("%p", conn); |
| 84 | |
| 85 | conn->state = BT_CONNECT; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 86 | conn->out = 1; |
| 87 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | conn->link_mode = HCI_LM_MASTER; |
| 89 | |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 90 | conn->attempt++; |
| 91 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 92 | conn->link_policy = hdev->link_policy; |
| 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | memset(&cp, 0, sizeof(cp)); |
| 95 | bacpy(&cp.bdaddr, &conn->dst); |
| 96 | cp.pscan_rep_mode = 0x02; |
| 97 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 98 | ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
| 99 | if (ie) { |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 100 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
| 101 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; |
| 102 | cp.pscan_mode = ie->data.pscan_mode; |
| 103 | cp.clock_offset = ie->data.clock_offset | |
| 104 | cpu_to_le16(0x8000); |
| 105 | } |
| 106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 108 | conn->ssp_mode = ie->data.ssp_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | } |
| 110 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 111 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 113 | cp.role_switch = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | else |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 115 | cp.role_switch = 0x00; |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 116 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 117 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | } |
| 119 | |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 120 | static void hci_acl_connect_cancel(struct hci_conn *conn) |
| 121 | { |
| 122 | struct hci_cp_create_conn_cancel cp; |
| 123 | |
| 124 | BT_DBG("%p", conn); |
| 125 | |
Andrei Emeltchenko | d095c1e | 2011-12-01 14:33:27 +0200 | [diff] [blame] | 126 | if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 127 | return; |
| 128 | |
| 129 | bacpy(&cp.bdaddr, &conn->dst); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 130 | hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 131 | } |
| 132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | void hci_acl_disconn(struct hci_conn *conn, __u8 reason) |
| 134 | { |
| 135 | struct hci_cp_disconnect cp; |
| 136 | |
| 137 | BT_DBG("%p", conn); |
| 138 | |
| 139 | conn->state = BT_DISCONN; |
| 140 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 141 | cp.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | cp.reason = reason; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 143 | hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | void hci_add_sco(struct hci_conn *conn, __u16 handle) |
| 147 | { |
| 148 | struct hci_dev *hdev = conn->hdev; |
| 149 | struct hci_cp_add_sco cp; |
| 150 | |
| 151 | BT_DBG("%p", conn); |
| 152 | |
| 153 | conn->state = BT_CONNECT; |
| 154 | conn->out = 1; |
| 155 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 156 | conn->attempt++; |
| 157 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 158 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 159 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 161 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | } |
| 163 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 164 | void hci_setup_sync(struct hci_conn *conn, __u16 handle) |
| 165 | { |
| 166 | struct hci_dev *hdev = conn->hdev; |
| 167 | struct hci_cp_setup_sync_conn cp; |
| 168 | |
| 169 | BT_DBG("%p", conn); |
| 170 | |
| 171 | conn->state = BT_CONNECT; |
| 172 | conn->out = 1; |
| 173 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 174 | conn->attempt++; |
| 175 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 176 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 177 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 178 | |
| 179 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
| 180 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); |
| 181 | cp.max_latency = cpu_to_le16(0xffff); |
| 182 | cp.voice_setting = cpu_to_le16(hdev->voice_setting); |
| 183 | cp.retrans_effort = 0xff; |
| 184 | |
| 185 | hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp); |
| 186 | } |
| 187 | |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 188 | void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, |
| 189 | u16 latency, u16 to_multiplier) |
| 190 | { |
| 191 | struct hci_cp_le_conn_update cp; |
| 192 | struct hci_dev *hdev = conn->hdev; |
| 193 | |
| 194 | memset(&cp, 0, sizeof(cp)); |
| 195 | |
| 196 | cp.handle = cpu_to_le16(conn->handle); |
| 197 | cp.conn_interval_min = cpu_to_le16(min); |
| 198 | cp.conn_interval_max = cpu_to_le16(max); |
| 199 | cp.conn_latency = cpu_to_le16(latency); |
| 200 | cp.supervision_timeout = cpu_to_le16(to_multiplier); |
| 201 | cp.min_ce_len = cpu_to_le16(0x0001); |
| 202 | cp.max_ce_len = cpu_to_le16(0x0001); |
| 203 | |
| 204 | hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); |
| 205 | } |
| 206 | EXPORT_SYMBOL(hci_le_conn_update); |
| 207 | |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 208 | void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], |
| 209 | __u8 ltk[16]) |
| 210 | { |
| 211 | struct hci_dev *hdev = conn->hdev; |
| 212 | struct hci_cp_le_start_enc cp; |
| 213 | |
| 214 | BT_DBG("%p", conn); |
| 215 | |
| 216 | memset(&cp, 0, sizeof(cp)); |
| 217 | |
| 218 | cp.handle = cpu_to_le16(conn->handle); |
| 219 | memcpy(cp.ltk, ltk, sizeof(cp.ltk)); |
| 220 | cp.ediv = ediv; |
Anderson Briglia | 51beabd | 2011-09-19 14:41:09 -0400 | [diff] [blame] | 221 | memcpy(cp.rand, rand, sizeof(cp.rand)); |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 222 | |
| 223 | hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); |
| 224 | } |
| 225 | EXPORT_SYMBOL(hci_le_start_enc); |
| 226 | |
| 227 | void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]) |
| 228 | { |
| 229 | struct hci_dev *hdev = conn->hdev; |
| 230 | struct hci_cp_le_ltk_reply cp; |
| 231 | |
| 232 | BT_DBG("%p", conn); |
| 233 | |
| 234 | memset(&cp, 0, sizeof(cp)); |
| 235 | |
| 236 | cp.handle = cpu_to_le16(conn->handle); |
| 237 | memcpy(cp.ltk, ltk, sizeof(ltk)); |
| 238 | |
| 239 | hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); |
| 240 | } |
| 241 | EXPORT_SYMBOL(hci_le_ltk_reply); |
| 242 | |
| 243 | void hci_le_ltk_neg_reply(struct hci_conn *conn) |
| 244 | { |
| 245 | struct hci_dev *hdev = conn->hdev; |
| 246 | struct hci_cp_le_ltk_neg_reply cp; |
| 247 | |
| 248 | BT_DBG("%p", conn); |
| 249 | |
| 250 | memset(&cp, 0, sizeof(cp)); |
| 251 | |
| 252 | cp.handle = cpu_to_le16(conn->handle); |
| 253 | |
| 254 | hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(cp), &cp); |
| 255 | } |
| 256 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 257 | /* Device _must_ be locked */ |
| 258 | void hci_sco_setup(struct hci_conn *conn, __u8 status) |
| 259 | { |
| 260 | struct hci_conn *sco = conn->link; |
| 261 | |
| 262 | BT_DBG("%p", conn); |
| 263 | |
| 264 | if (!sco) |
| 265 | return; |
| 266 | |
| 267 | if (!status) { |
| 268 | if (lmp_esco_capable(conn->hdev)) |
| 269 | hci_setup_sync(sco, conn->handle); |
| 270 | else |
| 271 | hci_add_sco(sco, conn->handle); |
| 272 | } else { |
| 273 | hci_proto_connect_cfm(sco, status); |
| 274 | hci_conn_del(sco); |
| 275 | } |
| 276 | } |
| 277 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 278 | static void hci_conn_timeout(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | { |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 280 | struct hci_conn *conn = container_of(work, struct hci_conn, |
| 281 | disc_work.work); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 282 | struct hci_dev *hdev = conn->hdev; |
Marcel Holtmann | 2950f21 | 2009-02-12 14:02:50 +0100 | [diff] [blame] | 283 | __u8 reason; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
| 285 | BT_DBG("conn %p state %d", conn, conn->state); |
| 286 | |
| 287 | if (atomic_read(&conn->refcnt)) |
| 288 | return; |
| 289 | |
| 290 | hci_dev_lock(hdev); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 291 | |
| 292 | switch (conn->state) { |
| 293 | case BT_CONNECT: |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 294 | case BT_CONNECT2: |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 295 | if (conn->out) { |
| 296 | if (conn->type == ACL_LINK) |
| 297 | hci_acl_connect_cancel(conn); |
| 298 | else if (conn->type == LE_LINK) |
| 299 | hci_le_connect_cancel(conn); |
| 300 | } |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 301 | break; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 302 | case BT_CONFIG: |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 303 | case BT_CONNECTED: |
Marcel Holtmann | 2950f21 | 2009-02-12 14:02:50 +0100 | [diff] [blame] | 304 | reason = hci_proto_disconn_ind(conn); |
| 305 | hci_acl_disconn(conn, reason); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 306 | break; |
| 307 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | conn->state = BT_CLOSED; |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 309 | break; |
| 310 | } |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | } |
| 314 | |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 315 | /* Enter sniff mode */ |
| 316 | static void hci_conn_enter_sniff_mode(struct hci_conn *conn) |
| 317 | { |
| 318 | struct hci_dev *hdev = conn->hdev; |
| 319 | |
| 320 | BT_DBG("conn %p mode %d", conn, conn->mode); |
| 321 | |
| 322 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 323 | return; |
| 324 | |
| 325 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) |
| 326 | return; |
| 327 | |
| 328 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) |
| 329 | return; |
| 330 | |
| 331 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { |
| 332 | struct hci_cp_sniff_subrate cp; |
| 333 | cp.handle = cpu_to_le16(conn->handle); |
| 334 | cp.max_latency = cpu_to_le16(0); |
| 335 | cp.min_remote_timeout = cpu_to_le16(0); |
| 336 | cp.min_local_timeout = cpu_to_le16(0); |
| 337 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
| 338 | } |
| 339 | |
| 340 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { |
| 341 | struct hci_cp_sniff_mode cp; |
| 342 | cp.handle = cpu_to_le16(conn->handle); |
| 343 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); |
| 344 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); |
| 345 | cp.attempt = cpu_to_le16(4); |
| 346 | cp.timeout = cpu_to_le16(1); |
| 347 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
| 348 | } |
| 349 | } |
| 350 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 351 | static void hci_conn_idle(unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 353 | struct hci_conn *conn = (void *) arg; |
| 354 | |
| 355 | BT_DBG("conn %p mode %d", conn, conn->mode); |
| 356 | |
| 357 | hci_conn_enter_sniff_mode(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 360 | static void hci_conn_auto_accept(unsigned long arg) |
| 361 | { |
| 362 | struct hci_conn *conn = (void *) arg; |
| 363 | struct hci_dev *hdev = conn->hdev; |
| 364 | |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 365 | hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), |
| 366 | &conn->dst); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 367 | } |
| 368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) |
| 370 | { |
| 371 | struct hci_conn *conn; |
| 372 | |
| 373 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); |
| 374 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 375 | conn = kzalloc(sizeof(struct hci_conn), GFP_ATOMIC); |
| 376 | if (!conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
| 379 | bacpy(&conn->dst, dst); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 380 | conn->hdev = hdev; |
| 381 | conn->type = type; |
| 382 | conn->mode = HCI_CM_ACTIVE; |
| 383 | conn->state = BT_OPEN; |
Andrei Emeltchenko | 93f19c9 | 2009-09-03 12:34:19 +0300 | [diff] [blame] | 384 | conn->auth_type = HCI_AT_GENERAL_BONDING; |
Johan Hedberg | 17fa4b9 | 2011-01-25 13:28:33 +0200 | [diff] [blame] | 385 | conn->io_capability = hdev->io_capability; |
Johan Hedberg | a958355 | 2011-02-19 12:06:01 -0300 | [diff] [blame] | 386 | conn->remote_auth = 0xff; |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 387 | conn->key_type = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 389 | conn->power_save = 1; |
Marcel Holtmann | 052b30b | 2009-04-26 20:01:22 +0200 | [diff] [blame] | 390 | conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 391 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 392 | switch (type) { |
| 393 | case ACL_LINK: |
| 394 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; |
| 395 | break; |
| 396 | case SCO_LINK: |
| 397 | if (lmp_esco_capable(hdev)) |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 398 | conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
| 399 | (hdev->esco_type & EDR_ESCO_MASK); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 400 | else |
| 401 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; |
| 402 | break; |
| 403 | case ESCO_LINK: |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 404 | conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 405 | break; |
| 406 | } |
| 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | skb_queue_head_init(&conn->data_q); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 409 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 410 | INIT_LIST_HEAD(&conn->chan_list);; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 411 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 412 | INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
Pavel Emelyanov | b24b8a2 | 2008-01-23 21:20:07 -0800 | [diff] [blame] | 413 | setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 414 | setup_timer(&conn->auto_accept_timer, hci_conn_auto_accept, |
| 415 | (unsigned long) conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | |
| 417 | atomic_set(&conn->refcnt, 0); |
| 418 | |
| 419 | hci_dev_hold(hdev); |
| 420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | hci_conn_hash_add(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 422 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); |
| 424 | |
Marcel Holtmann | 9eba32b | 2009-08-22 14:19:26 -0700 | [diff] [blame] | 425 | atomic_set(&conn->devref, 0); |
| 426 | |
Marcel Holtmann | a67e899 | 2009-05-02 18:24:06 -0700 | [diff] [blame] | 427 | hci_conn_init_sysfs(conn); |
| 428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | return conn; |
| 430 | } |
| 431 | |
| 432 | int hci_conn_del(struct hci_conn *conn) |
| 433 | { |
| 434 | struct hci_dev *hdev = conn->hdev; |
| 435 | |
| 436 | BT_DBG("%s conn %p handle %d", hdev->name, conn, conn->handle); |
| 437 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 438 | del_timer(&conn->idle_timer); |
| 439 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 440 | cancel_delayed_work_sync(&conn->disc_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 442 | del_timer(&conn->auto_accept_timer); |
| 443 | |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 444 | if (conn->type == ACL_LINK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | struct hci_conn *sco = conn->link; |
| 446 | if (sco) |
| 447 | sco->link = NULL; |
| 448 | |
| 449 | /* Unacked frames */ |
| 450 | hdev->acl_cnt += conn->sent; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 451 | } else if (conn->type == LE_LINK) { |
| 452 | if (hdev->le_pkts) |
| 453 | hdev->le_cnt += conn->sent; |
| 454 | else |
| 455 | hdev->acl_cnt += conn->sent; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 456 | } else { |
| 457 | struct hci_conn *acl = conn->link; |
| 458 | if (acl) { |
| 459 | acl->link = NULL; |
| 460 | hci_conn_put(acl); |
| 461 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Marcel Holtmann | 7d0db0a | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 464 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 465 | hci_chan_list_flush(conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | hci_conn_hash_del(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 468 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); |
Marcel Holtmann | 7d0db0a | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | skb_queue_purge(&conn->data_q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
Marcel Holtmann | 9eba32b | 2009-08-22 14:19:26 -0700 | [diff] [blame] | 473 | hci_conn_put_device(conn); |
Dave Young | 2ae9a6b | 2009-02-21 16:13:34 +0800 | [diff] [blame] | 474 | |
Marcel Holtmann | 384943e | 2009-05-08 18:20:43 -0700 | [diff] [blame] | 475 | hci_dev_put(hdev); |
| 476 | |
Tomas Targownik | 163f4da | 2011-06-30 16:30:44 -0300 | [diff] [blame] | 477 | if (conn->handle == 0) |
| 478 | kfree(conn); |
| 479 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) |
| 484 | { |
| 485 | int use_src = bacmp(src, BDADDR_ANY); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 486 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | |
| 488 | BT_DBG("%s -> %s", batostr(src), batostr(dst)); |
| 489 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 490 | read_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 492 | list_for_each_entry(d, &hci_dev_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags)) |
| 494 | continue; |
| 495 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 496 | /* Simple routing: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | * No source address - find interface with bdaddr != dst |
| 498 | * Source address - find interface with bdaddr == src |
| 499 | */ |
| 500 | |
| 501 | if (use_src) { |
| 502 | if (!bacmp(&d->bdaddr, src)) { |
| 503 | hdev = d; break; |
| 504 | } |
| 505 | } else { |
| 506 | if (bacmp(&d->bdaddr, dst)) { |
| 507 | hdev = d; break; |
| 508 | } |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | if (hdev) |
| 513 | hdev = hci_dev_hold(hdev); |
| 514 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 515 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | return hdev; |
| 517 | } |
| 518 | EXPORT_SYMBOL(hci_get_route); |
| 519 | |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 520 | /* Create SCO, ACL or LE connection. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | * Device _must_ be locked */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 522 | struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | { |
| 524 | struct hci_conn *acl; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 525 | struct hci_conn *sco; |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 526 | struct hci_conn *le; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
| 528 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); |
| 529 | |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 530 | if (type == LE_LINK) { |
Andre Guedes | eda42b5 | 2011-05-31 14:20:56 -0300 | [diff] [blame] | 531 | struct adv_entry *entry; |
| 532 | |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 533 | le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst); |
Anderson Briglia | 15c4794 | 2011-02-21 15:09:23 -0300 | [diff] [blame] | 534 | if (le) |
Ville Tervo | 30e7627 | 2011-02-22 16:10:53 -0300 | [diff] [blame] | 535 | return ERR_PTR(-EBUSY); |
Andre Guedes | eda42b5 | 2011-05-31 14:20:56 -0300 | [diff] [blame] | 536 | |
| 537 | entry = hci_find_adv_entry(hdev, dst); |
| 538 | if (!entry) |
| 539 | return ERR_PTR(-EHOSTUNREACH); |
| 540 | |
Anderson Briglia | 15c4794 | 2011-02-21 15:09:23 -0300 | [diff] [blame] | 541 | le = hci_conn_add(hdev, LE_LINK, dst); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 542 | if (!le) |
Ville Tervo | 30e7627 | 2011-02-22 16:10:53 -0300 | [diff] [blame] | 543 | return ERR_PTR(-ENOMEM); |
Andre Guedes | 893d675 | 2011-05-31 14:20:55 -0300 | [diff] [blame] | 544 | |
Andre Guedes | eda42b5 | 2011-05-31 14:20:56 -0300 | [diff] [blame] | 545 | le->dst_type = entry->bdaddr_type; |
| 546 | |
Andre Guedes | 893d675 | 2011-05-31 14:20:55 -0300 | [diff] [blame] | 547 | hci_le_connect(le); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 548 | |
| 549 | hci_conn_hold(le); |
| 550 | |
| 551 | return le; |
| 552 | } |
| 553 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 554 | acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
| 555 | if (!acl) { |
| 556 | acl = hci_conn_add(hdev, ACL_LINK, dst); |
| 557 | if (!acl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | return NULL; |
| 559 | } |
| 560 | |
| 561 | hci_conn_hold(acl); |
| 562 | |
Marcel Holtmann | 09ab6f4 | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 563 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 564 | acl->sec_level = BT_SECURITY_LOW; |
| 565 | acl->pending_sec_level = sec_level; |
Marcel Holtmann | 09ab6f4 | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 566 | acl->auth_type = auth_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | hci_acl_connect(acl); |
Marcel Holtmann | 09ab6f4 | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 568 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 570 | if (type == ACL_LINK) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | return acl; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 572 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 573 | sco = hci_conn_hash_lookup_ba(hdev, type, dst); |
| 574 | if (!sco) { |
| 575 | sco = hci_conn_add(hdev, type, dst); |
| 576 | if (!sco) { |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 577 | hci_conn_put(acl); |
| 578 | return NULL; |
| 579 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | } |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 581 | |
| 582 | acl->link = sco; |
| 583 | sco->link = acl; |
| 584 | |
| 585 | hci_conn_hold(sco); |
| 586 | |
| 587 | if (acl->state == BT_CONNECTED && |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 588 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
Nick Pelly | c390216 | 2009-11-13 14:16:32 -0800 | [diff] [blame] | 589 | acl->power_save = 1; |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 590 | hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
Nick Pelly | c390216 | 2009-11-13 14:16:32 -0800 | [diff] [blame] | 591 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 592 | if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->pend)) { |
| 593 | /* defer SCO setup until mode change completed */ |
| 594 | set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->pend); |
| 595 | return sco; |
| 596 | } |
| 597 | |
| 598 | hci_sco_setup(acl, 0x00); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 599 | } |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 600 | |
| 601 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | } |
| 603 | EXPORT_SYMBOL(hci_connect); |
| 604 | |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 605 | /* Check link security requirement */ |
| 606 | int hci_conn_check_link_mode(struct hci_conn *conn) |
| 607 | { |
| 608 | BT_DBG("conn %p", conn); |
| 609 | |
| 610 | if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0 && |
| 611 | !(conn->link_mode & HCI_LM_ENCRYPT)) |
| 612 | return 0; |
| 613 | |
| 614 | return 1; |
| 615 | } |
| 616 | EXPORT_SYMBOL(hci_conn_check_link_mode); |
| 617 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | /* Authenticate remote device */ |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 619 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | { |
| 621 | BT_DBG("conn %p", conn); |
| 622 | |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 623 | if (conn->pending_sec_level > sec_level) |
| 624 | sec_level = conn->pending_sec_level; |
| 625 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 626 | if (sec_level > conn->sec_level) |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 627 | conn->pending_sec_level = sec_level; |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 628 | else if (conn->link_mode & HCI_LM_AUTH) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | return 1; |
| 630 | |
Johan Hedberg | 65cf686 | 2011-01-19 12:06:49 +0530 | [diff] [blame] | 631 | /* Make sure we preserve an existing MITM requirement*/ |
| 632 | auth_type |= (conn->auth_type & 0x01); |
| 633 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 634 | conn->auth_type = auth_type; |
| 635 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { |
| 637 | struct hci_cp_auth_requested cp; |
Peter Hurley | 18daf164 | 2012-01-13 15:11:30 +0100 | [diff] [blame] | 638 | |
| 639 | /* encrypt must be pending if auth is also pending */ |
| 640 | set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend); |
| 641 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 642 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 643 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
| 644 | sizeof(cp), &cp); |
Waldemar Rymarkiewicz | 19f8def | 2011-05-31 15:49:25 +0200 | [diff] [blame] | 645 | if (conn->key_type != 0xff) |
| 646 | set_bit(HCI_CONN_REAUTH_PEND, &conn->pend); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 648 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | return 0; |
| 650 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 652 | /* Encrypt the the link */ |
| 653 | static void hci_conn_encrypt(struct hci_conn *conn) |
| 654 | { |
| 655 | BT_DBG("conn %p", conn); |
| 656 | |
| 657 | if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) { |
| 658 | struct hci_cp_set_conn_encrypt cp; |
| 659 | cp.handle = cpu_to_le16(conn->handle); |
| 660 | cp.encrypt = 0x01; |
| 661 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), |
| 662 | &cp); |
| 663 | } |
| 664 | } |
| 665 | |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 666 | /* Enable security */ |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 667 | int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | { |
| 669 | BT_DBG("conn %p", conn); |
| 670 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 671 | /* For sdp we don't need the link key. */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 672 | if (sec_level == BT_SECURITY_SDP) |
| 673 | return 1; |
| 674 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 675 | /* For non 2.1 devices and low security level we don't need the link |
| 676 | key. */ |
Marcel Holtmann | 3fdca1e | 2009-04-28 09:04:55 -0700 | [diff] [blame] | 677 | if (sec_level == BT_SECURITY_LOW && |
| 678 | (!conn->ssp_mode || !conn->hdev->ssp_mode)) |
| 679 | return 1; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 680 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 681 | /* For other security levels we need the link key. */ |
| 682 | if (!(conn->link_mode & HCI_LM_AUTH)) |
| 683 | goto auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 685 | /* An authenticated combination key has sufficient security for any |
| 686 | security level. */ |
| 687 | if (conn->key_type == HCI_LK_AUTH_COMBINATION) |
| 688 | goto encrypt; |
| 689 | |
| 690 | /* An unauthenticated combination key has sufficient security for |
| 691 | security level 1 and 2. */ |
| 692 | if (conn->key_type == HCI_LK_UNAUTH_COMBINATION && |
| 693 | (sec_level == BT_SECURITY_MEDIUM || |
| 694 | sec_level == BT_SECURITY_LOW)) |
| 695 | goto encrypt; |
| 696 | |
| 697 | /* A combination key has always sufficient security for the security |
| 698 | levels 1 or 2. High security level requires the combination key |
| 699 | is generated using maximum PIN code length (16). |
| 700 | For pre 2.1 units. */ |
| 701 | if (conn->key_type == HCI_LK_COMBINATION && |
| 702 | (sec_level != BT_SECURITY_HIGH || |
| 703 | conn->pin_length == 16)) |
| 704 | goto encrypt; |
| 705 | |
| 706 | auth: |
Gustavo F. Padovan | d766091 | 2011-12-18 22:33:30 -0200 | [diff] [blame] | 707 | if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | return 0; |
| 709 | |
Luiz Augusto von Dentz | 6fdf658 | 2011-06-13 15:37:35 +0300 | [diff] [blame] | 710 | if (!hci_conn_auth(conn, sec_level, auth_type)) |
| 711 | return 0; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 712 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 713 | encrypt: |
| 714 | if (conn->link_mode & HCI_LM_ENCRYPT) |
| 715 | return 1; |
| 716 | |
| 717 | hci_conn_encrypt(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | return 0; |
| 719 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 720 | EXPORT_SYMBOL(hci_conn_security); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 722 | /* Check secure link requirement */ |
| 723 | int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) |
| 724 | { |
| 725 | BT_DBG("conn %p", conn); |
| 726 | |
| 727 | if (sec_level != BT_SECURITY_HIGH) |
| 728 | return 1; /* Accept if non-secure is required */ |
| 729 | |
Waldemar Rymarkiewicz | ef4177e | 2011-06-02 14:24:52 +0200 | [diff] [blame] | 730 | if (conn->sec_level == BT_SECURITY_HIGH) |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 731 | return 1; |
| 732 | |
| 733 | return 0; /* Reject not secure link */ |
| 734 | } |
| 735 | EXPORT_SYMBOL(hci_conn_check_secure); |
| 736 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | /* Change link key */ |
| 738 | int hci_conn_change_link_key(struct hci_conn *conn) |
| 739 | { |
| 740 | BT_DBG("conn %p", conn); |
| 741 | |
| 742 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { |
| 743 | struct hci_cp_change_conn_link_key cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 744 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 745 | hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, |
| 746 | sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | return 0; |
| 750 | } |
| 751 | EXPORT_SYMBOL(hci_conn_change_link_key); |
| 752 | |
| 753 | /* Switch role */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 754 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | { |
| 756 | BT_DBG("conn %p", conn); |
| 757 | |
| 758 | if (!role && conn->link_mode & HCI_LM_MASTER) |
| 759 | return 1; |
| 760 | |
| 761 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->pend)) { |
| 762 | struct hci_cp_switch_role cp; |
| 763 | bacpy(&cp.bdaddr, &conn->dst); |
| 764 | cp.role = role; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 765 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 767 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | return 0; |
| 769 | } |
| 770 | EXPORT_SYMBOL(hci_conn_switch_role); |
| 771 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 772 | /* Enter active mode */ |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 773 | void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 774 | { |
| 775 | struct hci_dev *hdev = conn->hdev; |
| 776 | |
| 777 | BT_DBG("conn %p mode %d", conn, conn->mode); |
| 778 | |
| 779 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 780 | return; |
| 781 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 782 | if (conn->mode != HCI_CM_SNIFF) |
| 783 | goto timer; |
| 784 | |
| 785 | if (!conn->power_save && !force_active) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 786 | goto timer; |
| 787 | |
| 788 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { |
| 789 | struct hci_cp_exit_sniff_mode cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 790 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 791 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | timer: |
| 795 | if (hdev->idle_timeout > 0) |
| 796 | mod_timer(&conn->idle_timer, |
| 797 | jiffies + msecs_to_jiffies(hdev->idle_timeout)); |
| 798 | } |
| 799 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | /* Drop all connection on the device */ |
| 801 | void hci_conn_hash_flush(struct hci_dev *hdev) |
| 802 | { |
| 803 | struct hci_conn_hash *h = &hdev->conn_hash; |
Gustavo F. Padovan | 3e9c40a | 2011-12-14 22:52:31 -0200 | [diff] [blame] | 804 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
| 806 | BT_DBG("hdev %s", hdev->name); |
| 807 | |
Gustavo F. Padovan | bf4c632 | 2011-12-14 22:54:12 -0200 | [diff] [blame] | 808 | list_for_each_entry_rcu(c, &h->list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | c->state = BT_CLOSED; |
| 810 | |
Andrei Emeltchenko | 9f5a0d7 | 2011-11-07 14:20:25 +0200 | [diff] [blame] | 811 | hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | hci_conn_del(c); |
| 813 | } |
| 814 | } |
| 815 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 816 | /* Check pending connect attempts */ |
| 817 | void hci_conn_check_pending(struct hci_dev *hdev) |
| 818 | { |
| 819 | struct hci_conn *conn; |
| 820 | |
| 821 | BT_DBG("hdev %s", hdev->name); |
| 822 | |
| 823 | hci_dev_lock(hdev); |
| 824 | |
| 825 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); |
| 826 | if (conn) |
| 827 | hci_acl_connect(conn); |
| 828 | |
| 829 | hci_dev_unlock(hdev); |
| 830 | } |
| 831 | |
Marcel Holtmann | 9eba32b | 2009-08-22 14:19:26 -0700 | [diff] [blame] | 832 | void hci_conn_hold_device(struct hci_conn *conn) |
| 833 | { |
| 834 | atomic_inc(&conn->devref); |
| 835 | } |
| 836 | EXPORT_SYMBOL(hci_conn_hold_device); |
| 837 | |
| 838 | void hci_conn_put_device(struct hci_conn *conn) |
| 839 | { |
| 840 | if (atomic_dec_and_test(&conn->devref)) |
| 841 | hci_conn_del_sysfs(conn); |
| 842 | } |
| 843 | EXPORT_SYMBOL(hci_conn_put_device); |
| 844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | int hci_get_conn_list(void __user *arg) |
| 846 | { |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 847 | register struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | struct hci_conn_list_req req, *cl; |
| 849 | struct hci_conn_info *ci; |
| 850 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | int n = 0, size, err; |
| 852 | |
| 853 | if (copy_from_user(&req, arg, sizeof(req))) |
| 854 | return -EFAULT; |
| 855 | |
| 856 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) |
| 857 | return -EINVAL; |
| 858 | |
| 859 | size = sizeof(req) + req.conn_num * sizeof(*ci); |
| 860 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 861 | cl = kmalloc(size, GFP_KERNEL); |
| 862 | if (!cl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | return -ENOMEM; |
| 864 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 865 | hdev = hci_dev_get(req.dev_id); |
| 866 | if (!hdev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | kfree(cl); |
| 868 | return -ENODEV; |
| 869 | } |
| 870 | |
| 871 | ci = cl->conn_info; |
| 872 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 873 | hci_dev_lock(hdev); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 874 | list_for_each_entry(c, &hdev->conn_hash.list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | bacpy(&(ci + n)->bdaddr, &c->dst); |
| 876 | (ci + n)->handle = c->handle; |
| 877 | (ci + n)->type = c->type; |
| 878 | (ci + n)->out = c->out; |
| 879 | (ci + n)->state = c->state; |
| 880 | (ci + n)->link_mode = c->link_mode; |
| 881 | if (++n >= req.conn_num) |
| 882 | break; |
| 883 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 884 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
| 886 | cl->dev_id = hdev->id; |
| 887 | cl->conn_num = n; |
| 888 | size = sizeof(req) + n * sizeof(*ci); |
| 889 | |
| 890 | hci_dev_put(hdev); |
| 891 | |
| 892 | err = copy_to_user(arg, cl, size); |
| 893 | kfree(cl); |
| 894 | |
| 895 | return err ? -EFAULT : 0; |
| 896 | } |
| 897 | |
| 898 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) |
| 899 | { |
| 900 | struct hci_conn_info_req req; |
| 901 | struct hci_conn_info ci; |
| 902 | struct hci_conn *conn; |
| 903 | char __user *ptr = arg + sizeof(req); |
| 904 | |
| 905 | if (copy_from_user(&req, arg, sizeof(req))) |
| 906 | return -EFAULT; |
| 907 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 908 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
| 910 | if (conn) { |
| 911 | bacpy(&ci.bdaddr, &conn->dst); |
| 912 | ci.handle = conn->handle; |
| 913 | ci.type = conn->type; |
| 914 | ci.out = conn->out; |
| 915 | ci.state = conn->state; |
| 916 | ci.link_mode = conn->link_mode; |
| 917 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 918 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
| 920 | if (!conn) |
| 921 | return -ENOENT; |
| 922 | |
| 923 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; |
| 924 | } |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 925 | |
| 926 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) |
| 927 | { |
| 928 | struct hci_auth_info_req req; |
| 929 | struct hci_conn *conn; |
| 930 | |
| 931 | if (copy_from_user(&req, arg, sizeof(req))) |
| 932 | return -EFAULT; |
| 933 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 934 | hci_dev_lock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 935 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); |
| 936 | if (conn) |
| 937 | req.type = conn->auth_type; |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 938 | hci_dev_unlock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 939 | |
| 940 | if (!conn) |
| 941 | return -ENOENT; |
| 942 | |
| 943 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; |
| 944 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 945 | |
| 946 | struct hci_chan *hci_chan_create(struct hci_conn *conn) |
| 947 | { |
| 948 | struct hci_dev *hdev = conn->hdev; |
| 949 | struct hci_chan *chan; |
| 950 | |
| 951 | BT_DBG("%s conn %p", hdev->name, conn); |
| 952 | |
| 953 | chan = kzalloc(sizeof(struct hci_chan), GFP_ATOMIC); |
| 954 | if (!chan) |
| 955 | return NULL; |
| 956 | |
| 957 | chan->conn = conn; |
| 958 | skb_queue_head_init(&chan->data_q); |
| 959 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 960 | list_add_rcu(&chan->list, &conn->chan_list); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 961 | |
| 962 | return chan; |
| 963 | } |
| 964 | |
| 965 | int hci_chan_del(struct hci_chan *chan) |
| 966 | { |
| 967 | struct hci_conn *conn = chan->conn; |
| 968 | struct hci_dev *hdev = conn->hdev; |
| 969 | |
| 970 | BT_DBG("%s conn %p chan %p", hdev->name, conn, chan); |
| 971 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 972 | list_del_rcu(&chan->list); |
| 973 | |
| 974 | synchronize_rcu(); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 975 | |
| 976 | skb_queue_purge(&chan->data_q); |
| 977 | kfree(chan); |
| 978 | |
| 979 | return 0; |
| 980 | } |
| 981 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 982 | void hci_chan_list_flush(struct hci_conn *conn) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 983 | { |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 984 | struct hci_chan *chan; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 985 | |
| 986 | BT_DBG("conn %p", conn); |
| 987 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 988 | list_for_each_entry_rcu(chan, &conn->chan_list, list) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 989 | hci_chan_del(chan); |
| 990 | } |