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 | |
Gustavo Padovan | 8c520a5 | 2012-05-23 04:04:22 -0300 | [diff] [blame] | 27 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | #include <net/bluetooth/bluetooth.h> |
| 30 | #include <net/bluetooth/hci_core.h> |
Andrei Emeltchenko | 9740e49 | 2012-05-29 13:59:02 +0300 | [diff] [blame] | 31 | #include <net/bluetooth/a2mp.h> |
Vinicius Costa Gomes | d8343f1 | 2012-08-23 21:32:44 -0300 | [diff] [blame] | 32 | #include <net/bluetooth/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 34 | struct sco_param { |
| 35 | u16 pkt_type; |
| 36 | u16 max_latency; |
| 37 | }; |
| 38 | |
| 39 | static const struct sco_param sco_param_cvsd[] = { |
| 40 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a }, /* S3 */ |
| 41 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007 }, /* S2 */ |
| 42 | { EDR_ESCO_MASK | ESCO_EV3, 0x0007 }, /* S1 */ |
| 43 | { EDR_ESCO_MASK | ESCO_HV3, 0xffff }, /* D1 */ |
| 44 | { EDR_ESCO_MASK | ESCO_HV1, 0xffff }, /* D0 */ |
| 45 | }; |
| 46 | |
| 47 | static const struct sco_param sco_param_wideband[] = { |
| 48 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000d }, /* T2 */ |
| 49 | { EDR_ESCO_MASK | ESCO_EV3, 0x0008 }, /* T1 */ |
| 50 | }; |
| 51 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 52 | static void hci_le_create_connection(struct hci_conn *conn) |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 53 | { |
| 54 | struct hci_dev *hdev = conn->hdev; |
| 55 | struct hci_cp_le_create_conn cp; |
| 56 | |
| 57 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 58 | conn->out = true; |
Vinicius Costa Gomes | b92a622 | 2011-02-10 22:38:52 -0300 | [diff] [blame] | 59 | conn->link_mode |= HCI_LM_MASTER; |
Vinicius Costa Gomes | 7b5c0d5 | 2011-06-09 18:50:50 -0300 | [diff] [blame] | 60 | conn->sec_level = BT_SECURITY_LOW; |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 61 | |
| 62 | memset(&cp, 0, sizeof(cp)); |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 63 | cp.scan_interval = __constant_cpu_to_le16(0x0060); |
| 64 | cp.scan_window = __constant_cpu_to_le16(0x0030); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 65 | bacpy(&cp.peer_addr, &conn->dst); |
Andre Guedes | 6d3ce0e7 | 2011-05-31 14:20:57 -0300 | [diff] [blame] | 66 | cp.peer_addr_type = conn->dst_type; |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 67 | cp.conn_interval_min = __constant_cpu_to_le16(0x0028); |
| 68 | cp.conn_interval_max = __constant_cpu_to_le16(0x0038); |
| 69 | cp.supervision_timeout = __constant_cpu_to_le16(0x002a); |
| 70 | cp.min_ce_len = __constant_cpu_to_le16(0x0000); |
| 71 | cp.max_ce_len = __constant_cpu_to_le16(0x0000); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 72 | |
| 73 | hci_send_cmd(hdev, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp); |
| 74 | } |
| 75 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 76 | static void hci_le_create_connection_cancel(struct hci_conn *conn) |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 77 | { |
| 78 | hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL); |
| 79 | } |
| 80 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 81 | static void hci_acl_create_connection(struct hci_conn *conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { |
| 83 | struct hci_dev *hdev = conn->hdev; |
| 84 | struct inquiry_entry *ie; |
| 85 | struct hci_cp_create_conn cp; |
| 86 | |
Andrei Emeltchenko | 42d2d87 | 2012-02-17 11:40:57 +0200 | [diff] [blame] | 87 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 90 | conn->out = true; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | conn->link_mode = HCI_LM_MASTER; |
| 93 | |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 94 | conn->attempt++; |
| 95 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 96 | conn->link_policy = hdev->link_policy; |
| 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | memset(&cp, 0, sizeof(cp)); |
| 99 | bacpy(&cp.bdaddr, &conn->dst); |
| 100 | cp.pscan_rep_mode = 0x02; |
| 101 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 102 | ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
| 103 | if (ie) { |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 104 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
| 105 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; |
| 106 | cp.pscan_mode = ie->data.pscan_mode; |
| 107 | cp.clock_offset = ie->data.clock_offset | |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 108 | __constant_cpu_to_le16(0x8000); |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 109 | } |
| 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 112 | if (ie->data.ssp_mode > 0) |
| 113 | set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | } |
| 115 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 116 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 118 | cp.role_switch = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | else |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 120 | cp.role_switch = 0x00; |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 121 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 122 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 125 | static void hci_acl_create_connection_cancel(struct hci_conn *conn) |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 126 | { |
| 127 | struct hci_cp_create_conn_cancel cp; |
| 128 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 129 | BT_DBG("hcon %p", conn); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 130 | |
Andrei Emeltchenko | d095c1e | 2011-12-01 14:33:27 +0200 | [diff] [blame] | 131 | if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 132 | return; |
| 133 | |
| 134 | bacpy(&cp.bdaddr, &conn->dst); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 135 | 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] | 136 | } |
| 137 | |
Claudio Takahasi | 93796fa | 2013-04-11 13:54:56 -0300 | [diff] [blame] | 138 | static void hci_reject_sco(struct hci_conn *conn) |
| 139 | { |
| 140 | struct hci_cp_reject_sync_conn_req cp; |
| 141 | |
| 142 | cp.reason = HCI_ERROR_REMOTE_USER_TERM; |
| 143 | bacpy(&cp.bdaddr, &conn->dst); |
| 144 | |
| 145 | hci_send_cmd(conn->hdev, HCI_OP_REJECT_SYNC_CONN_REQ, sizeof(cp), &cp); |
| 146 | } |
| 147 | |
Andre Guedes | bed7174 | 2013-01-30 11:50:56 -0300 | [diff] [blame] | 148 | void hci_disconnect(struct hci_conn *conn, __u8 reason) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | { |
| 150 | struct hci_cp_disconnect cp; |
| 151 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 152 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
| 154 | conn->state = BT_DISCONN; |
| 155 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 156 | cp.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | cp.reason = reason; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 158 | hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | } |
| 160 | |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 161 | static void hci_amp_disconn(struct hci_conn *conn, __u8 reason) |
| 162 | { |
| 163 | struct hci_cp_disconn_phy_link cp; |
| 164 | |
| 165 | BT_DBG("hcon %p", conn); |
| 166 | |
| 167 | conn->state = BT_DISCONN; |
| 168 | |
| 169 | cp.phy_handle = HCI_PHY_HANDLE(conn->handle); |
| 170 | cp.reason = reason; |
| 171 | hci_send_cmd(conn->hdev, HCI_OP_DISCONN_PHY_LINK, |
| 172 | sizeof(cp), &cp); |
| 173 | } |
| 174 | |
Vinicius Costa Gomes | 57f5d0d | 2012-07-27 19:32:54 -0300 | [diff] [blame] | 175 | static void hci_add_sco(struct hci_conn *conn, __u16 handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | { |
| 177 | struct hci_dev *hdev = conn->hdev; |
| 178 | struct hci_cp_add_sco cp; |
| 179 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 180 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
| 182 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 183 | conn->out = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 185 | conn->attempt++; |
| 186 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 187 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 188 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 190 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | } |
| 192 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 193 | bool hci_setup_sync(struct hci_conn *conn, __u16 handle) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 194 | { |
| 195 | struct hci_dev *hdev = conn->hdev; |
| 196 | struct hci_cp_setup_sync_conn cp; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 197 | const struct sco_param *param; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 198 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 199 | BT_DBG("hcon %p", conn); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 200 | |
| 201 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 202 | conn->out = true; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 203 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 204 | conn->attempt++; |
| 205 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 206 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 207 | |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 208 | cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40); |
| 209 | cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40); |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 210 | cp.voice_setting = cpu_to_le16(conn->setting); |
| 211 | |
| 212 | switch (conn->setting & SCO_AIRMODE_MASK) { |
| 213 | case SCO_AIRMODE_TRANSP: |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 214 | if (conn->attempt > ARRAY_SIZE(sco_param_wideband)) |
| 215 | return false; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 216 | cp.retrans_effort = 0x02; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 217 | param = &sco_param_wideband[conn->attempt - 1]; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 218 | break; |
| 219 | case SCO_AIRMODE_CVSD: |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 220 | if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) |
| 221 | return false; |
| 222 | cp.retrans_effort = 0x01; |
| 223 | param = &sco_param_cvsd[conn->attempt - 1]; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 224 | break; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 225 | default: |
| 226 | return false; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 227 | } |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 228 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 229 | cp.pkt_type = __cpu_to_le16(param->pkt_type); |
| 230 | cp.max_latency = __cpu_to_le16(param->max_latency); |
| 231 | |
| 232 | if (hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0) |
| 233 | return false; |
| 234 | |
| 235 | return true; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 236 | } |
| 237 | |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 238 | void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 239 | u16 latency, u16 to_multiplier) |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 240 | { |
| 241 | struct hci_cp_le_conn_update cp; |
| 242 | struct hci_dev *hdev = conn->hdev; |
| 243 | |
| 244 | memset(&cp, 0, sizeof(cp)); |
| 245 | |
| 246 | cp.handle = cpu_to_le16(conn->handle); |
| 247 | cp.conn_interval_min = cpu_to_le16(min); |
| 248 | cp.conn_interval_max = cpu_to_le16(max); |
| 249 | cp.conn_latency = cpu_to_le16(latency); |
| 250 | cp.supervision_timeout = cpu_to_le16(to_multiplier); |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 251 | cp.min_ce_len = __constant_cpu_to_le16(0x0001); |
| 252 | cp.max_ce_len = __constant_cpu_to_le16(0x0001); |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 253 | |
| 254 | hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); |
| 255 | } |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 256 | |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 257 | void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 258 | __u8 ltk[16]) |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 259 | { |
| 260 | struct hci_dev *hdev = conn->hdev; |
| 261 | struct hci_cp_le_start_enc cp; |
| 262 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 263 | BT_DBG("hcon %p", conn); |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 264 | |
| 265 | memset(&cp, 0, sizeof(cp)); |
| 266 | |
| 267 | cp.handle = cpu_to_le16(conn->handle); |
| 268 | memcpy(cp.ltk, ltk, sizeof(cp.ltk)); |
| 269 | cp.ediv = ediv; |
Anderson Briglia | 51beabd | 2011-09-19 14:41:09 -0400 | [diff] [blame] | 270 | memcpy(cp.rand, rand, sizeof(cp.rand)); |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 271 | |
| 272 | hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); |
| 273 | } |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 274 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 275 | /* Device _must_ be locked */ |
| 276 | void hci_sco_setup(struct hci_conn *conn, __u8 status) |
| 277 | { |
| 278 | struct hci_conn *sco = conn->link; |
| 279 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 280 | if (!sco) |
| 281 | return; |
| 282 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 283 | BT_DBG("hcon %p", conn); |
| 284 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 285 | if (!status) { |
| 286 | if (lmp_esco_capable(conn->hdev)) |
| 287 | hci_setup_sync(sco, conn->handle); |
| 288 | else |
| 289 | hci_add_sco(sco, conn->handle); |
| 290 | } else { |
| 291 | hci_proto_connect_cfm(sco, status); |
| 292 | hci_conn_del(sco); |
| 293 | } |
| 294 | } |
| 295 | |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 296 | static void hci_conn_disconnect(struct hci_conn *conn) |
| 297 | { |
| 298 | __u8 reason = hci_proto_disconn_ind(conn); |
| 299 | |
| 300 | switch (conn->type) { |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 301 | case AMP_LINK: |
| 302 | hci_amp_disconn(conn, reason); |
| 303 | break; |
Andre Guedes | 4c02e2d | 2013-01-30 11:50:55 -0300 | [diff] [blame] | 304 | default: |
Andre Guedes | bed7174 | 2013-01-30 11:50:56 -0300 | [diff] [blame] | 305 | hci_disconnect(conn, reason); |
Andre Guedes | 4c02e2d | 2013-01-30 11:50:55 -0300 | [diff] [blame] | 306 | break; |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 307 | } |
| 308 | } |
| 309 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 310 | static void hci_conn_timeout(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | { |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 312 | struct hci_conn *conn = container_of(work, struct hci_conn, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 313 | disc_work.work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 315 | BT_DBG("hcon %p state %s", conn, state_to_string(conn->state)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | |
| 317 | if (atomic_read(&conn->refcnt)) |
| 318 | return; |
| 319 | |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 320 | switch (conn->state) { |
| 321 | case BT_CONNECT: |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 322 | case BT_CONNECT2: |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 323 | if (conn->out) { |
| 324 | if (conn->type == ACL_LINK) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 325 | hci_acl_create_connection_cancel(conn); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 326 | else if (conn->type == LE_LINK) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 327 | hci_le_create_connection_cancel(conn); |
Claudio Takahasi | 93796fa | 2013-04-11 13:54:56 -0300 | [diff] [blame] | 328 | } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { |
| 329 | hci_reject_sco(conn); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 330 | } |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 331 | break; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 332 | case BT_CONFIG: |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 333 | case BT_CONNECTED: |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 334 | hci_conn_disconnect(conn); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 335 | break; |
| 336 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | conn->state = BT_CLOSED; |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 338 | break; |
| 339 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 342 | /* Enter sniff mode */ |
| 343 | static void hci_conn_enter_sniff_mode(struct hci_conn *conn) |
| 344 | { |
| 345 | struct hci_dev *hdev = conn->hdev; |
| 346 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 347 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 348 | |
| 349 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 350 | return; |
| 351 | |
| 352 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) |
| 353 | return; |
| 354 | |
| 355 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) |
| 356 | return; |
| 357 | |
| 358 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { |
| 359 | struct hci_cp_sniff_subrate cp; |
| 360 | cp.handle = cpu_to_le16(conn->handle); |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 361 | cp.max_latency = __constant_cpu_to_le16(0); |
| 362 | cp.min_remote_timeout = __constant_cpu_to_le16(0); |
| 363 | cp.min_local_timeout = __constant_cpu_to_le16(0); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 364 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
| 365 | } |
| 366 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 367 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 368 | struct hci_cp_sniff_mode cp; |
| 369 | cp.handle = cpu_to_le16(conn->handle); |
| 370 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); |
| 371 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 372 | cp.attempt = __constant_cpu_to_le16(4); |
| 373 | cp.timeout = __constant_cpu_to_le16(1); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 374 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
| 375 | } |
| 376 | } |
| 377 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 378 | static void hci_conn_idle(unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | { |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 380 | struct hci_conn *conn = (void *) arg; |
| 381 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 382 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 383 | |
| 384 | hci_conn_enter_sniff_mode(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | } |
| 386 | |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 387 | static void hci_conn_auto_accept(unsigned long arg) |
| 388 | { |
| 389 | struct hci_conn *conn = (void *) arg; |
| 390 | struct hci_dev *hdev = conn->hdev; |
| 391 | |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 392 | hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 393 | &conn->dst); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 394 | } |
| 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) |
| 397 | { |
| 398 | struct hci_conn *conn; |
| 399 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 400 | BT_DBG("%s dst %pMR", hdev->name, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
Andre Guedes | cb601d7 | 2012-01-30 09:22:09 -0300 | [diff] [blame] | 402 | conn = kzalloc(sizeof(struct hci_conn), GFP_KERNEL); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 403 | if (!conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
| 406 | bacpy(&conn->dst, dst); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 407 | conn->hdev = hdev; |
| 408 | conn->type = type; |
| 409 | conn->mode = HCI_CM_ACTIVE; |
| 410 | conn->state = BT_OPEN; |
Andrei Emeltchenko | 93f19c9 | 2009-09-03 12:34:19 +0300 | [diff] [blame] | 411 | conn->auth_type = HCI_AT_GENERAL_BONDING; |
Johan Hedberg | 17fa4b9 | 2011-01-25 13:28:33 +0200 | [diff] [blame] | 412 | conn->io_capability = hdev->io_capability; |
Johan Hedberg | a958355 | 2011-02-19 12:06:01 -0300 | [diff] [blame] | 413 | conn->remote_auth = 0xff; |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 414 | conn->key_type = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 416 | set_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
Marcel Holtmann | 052b30b | 2009-04-26 20:01:22 +0200 | [diff] [blame] | 417 | conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 418 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 419 | switch (type) { |
| 420 | case ACL_LINK: |
| 421 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; |
| 422 | break; |
| 423 | case SCO_LINK: |
| 424 | if (lmp_esco_capable(hdev)) |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 425 | conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
| 426 | (hdev->esco_type & EDR_ESCO_MASK); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 427 | else |
| 428 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; |
| 429 | break; |
| 430 | case ESCO_LINK: |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 431 | conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 432 | break; |
| 433 | } |
| 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | skb_queue_head_init(&conn->data_q); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 436 | |
Marcel Holtmann | 70c1f20 | 2012-02-22 12:06:43 +0100 | [diff] [blame] | 437 | INIT_LIST_HEAD(&conn->chan_list); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 438 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 439 | INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
Pavel Emelyanov | b24b8a2 | 2008-01-23 21:20:07 -0800 | [diff] [blame] | 440 | setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 441 | setup_timer(&conn->auto_accept_timer, hci_conn_auto_accept, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 442 | (unsigned long) conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
| 444 | atomic_set(&conn->refcnt, 0); |
| 445 | |
| 446 | hci_dev_hold(hdev); |
| 447 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | hci_conn_hash_add(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 449 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); |
| 451 | |
Marcel Holtmann | a67e899 | 2009-05-02 18:24:06 -0700 | [diff] [blame] | 452 | hci_conn_init_sysfs(conn); |
| 453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | return conn; |
| 455 | } |
| 456 | |
| 457 | int hci_conn_del(struct hci_conn *conn) |
| 458 | { |
| 459 | struct hci_dev *hdev = conn->hdev; |
| 460 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 461 | BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 463 | del_timer(&conn->idle_timer); |
| 464 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 465 | cancel_delayed_work_sync(&conn->disc_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 467 | del_timer(&conn->auto_accept_timer); |
| 468 | |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 469 | if (conn->type == ACL_LINK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | struct hci_conn *sco = conn->link; |
| 471 | if (sco) |
| 472 | sco->link = NULL; |
| 473 | |
| 474 | /* Unacked frames */ |
| 475 | hdev->acl_cnt += conn->sent; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 476 | } else if (conn->type == LE_LINK) { |
| 477 | if (hdev->le_pkts) |
| 478 | hdev->le_cnt += conn->sent; |
| 479 | else |
| 480 | hdev->acl_cnt += conn->sent; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 481 | } else { |
| 482 | struct hci_conn *acl = conn->link; |
| 483 | if (acl) { |
| 484 | acl->link = NULL; |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 485 | hci_conn_drop(acl); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 486 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | } |
| 488 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 489 | hci_chan_list_flush(conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 490 | |
Andrei Emeltchenko | 9740e49 | 2012-05-29 13:59:02 +0300 | [diff] [blame] | 491 | if (conn->amp_mgr) |
| 492 | amp_mgr_put(conn->amp_mgr); |
| 493 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | hci_conn_hash_del(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 495 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); |
Marcel Holtmann | 7d0db0a | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | skb_queue_purge(&conn->data_q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
David Herrmann | fc225c3 | 2013-04-06 20:28:38 +0200 | [diff] [blame] | 500 | hci_conn_del_sysfs(conn); |
Dave Young | 2ae9a6b | 2009-02-21 16:13:34 +0800 | [diff] [blame] | 501 | |
Marcel Holtmann | 384943e | 2009-05-08 18:20:43 -0700 | [diff] [blame] | 502 | hci_dev_put(hdev); |
| 503 | |
David Herrmann | 8d12356 | 2013-04-06 20:28:39 +0200 | [diff] [blame] | 504 | hci_conn_put(conn); |
Tomas Targownik | 163f4da | 2011-06-30 16:30:44 -0300 | [diff] [blame] | 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) |
| 510 | { |
| 511 | int use_src = bacmp(src, BDADDR_ANY); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 512 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 514 | BT_DBG("%pMR -> %pMR", src, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 516 | read_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 518 | list_for_each_entry(d, &hci_dev_list, list) { |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 519 | if (!test_bit(HCI_UP, &d->flags) || |
Andrei Emeltchenko | d300fa9 | 2012-06-19 15:21:21 +0300 | [diff] [blame] | 520 | test_bit(HCI_RAW, &d->flags) || |
Marcel Holtmann | af750e9 | 2013-09-03 18:08:37 -0700 | [diff] [blame^] | 521 | test_bit(HCI_USER_CHANNEL, &d->dev_flags) || |
Andrei Emeltchenko | d300fa9 | 2012-06-19 15:21:21 +0300 | [diff] [blame] | 522 | d->dev_type != HCI_BREDR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | continue; |
| 524 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 525 | /* Simple routing: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | * No source address - find interface with bdaddr != dst |
| 527 | * Source address - find interface with bdaddr == src |
| 528 | */ |
| 529 | |
| 530 | if (use_src) { |
| 531 | if (!bacmp(&d->bdaddr, src)) { |
| 532 | hdev = d; break; |
| 533 | } |
| 534 | } else { |
| 535 | if (bacmp(&d->bdaddr, dst)) { |
| 536 | hdev = d; break; |
| 537 | } |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | if (hdev) |
| 542 | hdev = hci_dev_hold(hdev); |
| 543 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 544 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | return hdev; |
| 546 | } |
| 547 | EXPORT_SYMBOL(hci_get_route); |
| 548 | |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 549 | static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, |
| 550 | u8 dst_type, u8 sec_level, u8 auth_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | { |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 552 | struct hci_conn *le; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
Johan Hedberg | f1550478 | 2012-10-24 21:12:03 +0300 | [diff] [blame] | 554 | if (test_bit(HCI_LE_PERIPHERAL, &hdev->flags)) |
| 555 | return ERR_PTR(-ENOTSUPP); |
| 556 | |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 557 | le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst); |
| 558 | if (!le) { |
| 559 | le = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); |
| 560 | if (le) |
| 561 | return ERR_PTR(-EBUSY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 563 | le = hci_conn_add(hdev, LE_LINK, dst); |
| 564 | if (!le) |
| 565 | return ERR_PTR(-ENOMEM); |
Andrzej Kaczmarek | dfc94db | 2012-05-30 15:39:21 +0200 | [diff] [blame] | 566 | |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 567 | le->dst_type = bdaddr_to_le(dst_type); |
| 568 | hci_le_create_connection(le); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 569 | } |
| 570 | |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 571 | le->pending_sec_level = sec_level; |
| 572 | le->auth_type = auth_type; |
| 573 | |
| 574 | hci_conn_hold(le); |
| 575 | |
| 576 | return le; |
| 577 | } |
| 578 | |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 579 | static struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, |
| 580 | u8 sec_level, u8 auth_type) |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 581 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | struct hci_conn *acl; |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 583 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 584 | acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 585 | if (!acl) { |
| 586 | acl = hci_conn_add(hdev, ACL_LINK, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | if (!acl) |
Johan Hedberg | 48c7aba | 2012-02-19 14:06:48 +0200 | [diff] [blame] | 588 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | hci_conn_hold(acl); |
| 592 | |
| 593 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 594 | acl->sec_level = BT_SECURITY_LOW; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 595 | acl->pending_sec_level = sec_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | acl->auth_type = auth_type; |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 597 | hci_acl_create_connection(acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | } |
| 599 | |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 600 | return acl; |
| 601 | } |
| 602 | |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 603 | struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, |
| 604 | __u16 setting) |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 605 | { |
| 606 | struct hci_conn *acl; |
| 607 | struct hci_conn *sco; |
| 608 | |
Frédéric Dalleau | e660ed6 | 2013-08-19 14:23:54 +0200 | [diff] [blame] | 609 | acl = hci_connect_acl(hdev, dst, BT_SECURITY_LOW, HCI_AT_NO_BONDING); |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 610 | if (IS_ERR(acl)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | return acl; |
| 612 | |
| 613 | sco = hci_conn_hash_lookup_ba(hdev, type, dst); |
| 614 | if (!sco) { |
| 615 | sco = hci_conn_add(hdev, type, dst); |
| 616 | if (!sco) { |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 617 | hci_conn_drop(acl); |
Johan Hedberg | 48c7aba | 2012-02-19 14:06:48 +0200 | [diff] [blame] | 618 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | } |
| 620 | } |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 621 | |
| 622 | acl->link = sco; |
| 623 | sco->link = acl; |
| 624 | |
| 625 | hci_conn_hold(sco); |
| 626 | |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 627 | sco->setting = setting; |
| 628 | |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 629 | if (acl->state == BT_CONNECTED && |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 630 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 631 | set_bit(HCI_CONN_POWER_SAVE, &acl->flags); |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 632 | hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 633 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 634 | if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) { |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 635 | /* defer SCO setup until mode change completed */ |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 636 | set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags); |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 637 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | } |
| 639 | |
| 640 | hci_sco_setup(acl, 0x00); |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 641 | } |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 642 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 643 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 646 | /* Create SCO, ACL or LE connection. */ |
| 647 | struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, |
| 648 | __u8 dst_type, __u8 sec_level, __u8 auth_type) |
| 649 | { |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 650 | BT_DBG("%s dst %pMR type 0x%x", hdev->name, dst, type); |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 651 | |
Vinicius Costa Gomes | 4cd2d98 | 2012-07-27 19:32:59 -0300 | [diff] [blame] | 652 | switch (type) { |
| 653 | case LE_LINK: |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 654 | return hci_connect_le(hdev, dst, dst_type, sec_level, auth_type); |
Vinicius Costa Gomes | 4cd2d98 | 2012-07-27 19:32:59 -0300 | [diff] [blame] | 655 | case ACL_LINK: |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 656 | return hci_connect_acl(hdev, dst, sec_level, auth_type); |
Vinicius Costa Gomes | 4cd2d98 | 2012-07-27 19:32:59 -0300 | [diff] [blame] | 657 | } |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 658 | |
Vinicius Costa Gomes | 4cd2d98 | 2012-07-27 19:32:59 -0300 | [diff] [blame] | 659 | return ERR_PTR(-EINVAL); |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 660 | } |
| 661 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | /* Check link security requirement */ |
| 663 | int hci_conn_check_link_mode(struct hci_conn *conn) |
| 664 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 665 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
Johan Hedberg | aa64a8b | 2012-01-18 21:33:12 +0200 | [diff] [blame] | 667 | if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | return 0; |
| 669 | |
| 670 | return 1; |
| 671 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
| 673 | /* Authenticate remote device */ |
| 674 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
| 675 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 676 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 678 | if (conn->pending_sec_level > sec_level) |
| 679 | sec_level = conn->pending_sec_level; |
| 680 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | if (sec_level > conn->sec_level) |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 682 | conn->pending_sec_level = sec_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | else if (conn->link_mode & HCI_LM_AUTH) |
| 684 | return 1; |
| 685 | |
Johan Hedberg | 65cf686 | 2011-01-19 12:06:49 +0530 | [diff] [blame] | 686 | /* Make sure we preserve an existing MITM requirement*/ |
| 687 | auth_type |= (conn->auth_type & 0x01); |
| 688 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 689 | conn->auth_type = auth_type; |
| 690 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 691 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | struct hci_cp_auth_requested cp; |
Peter Hurley | b7d05ba | 2012-01-13 15:11:30 +0100 | [diff] [blame] | 693 | |
| 694 | /* encrypt must be pending if auth is also pending */ |
| 695 | set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); |
| 696 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 698 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 699 | sizeof(cp), &cp); |
Waldemar Rymarkiewicz | 19f8def | 2011-05-31 15:49:25 +0200 | [diff] [blame] | 700 | if (conn->key_type != 0xff) |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 701 | set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | return 0; |
| 705 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 707 | /* Encrypt the the link */ |
| 708 | static void hci_conn_encrypt(struct hci_conn *conn) |
| 709 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 710 | BT_DBG("hcon %p", conn); |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 711 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 712 | if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 713 | struct hci_cp_set_conn_encrypt cp; |
| 714 | cp.handle = cpu_to_le16(conn->handle); |
| 715 | cp.encrypt = 0x01; |
| 716 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 717 | &cp); |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 718 | } |
| 719 | } |
| 720 | |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 721 | /* Enable security */ |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 722 | 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] | 723 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 724 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | |
Vinicius Costa Gomes | d8343f1 | 2012-08-23 21:32:44 -0300 | [diff] [blame] | 726 | if (conn->type == LE_LINK) |
| 727 | return smp_conn_security(conn, sec_level); |
| 728 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 729 | /* For sdp we don't need the link key. */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 730 | if (sec_level == BT_SECURITY_SDP) |
| 731 | return 1; |
| 732 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 733 | /* For non 2.1 devices and low security level we don't need the link |
| 734 | key. */ |
Johan Hedberg | aa64a8b | 2012-01-18 21:33:12 +0200 | [diff] [blame] | 735 | if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn)) |
Marcel Holtmann | 3fdca1e | 2009-04-28 09:04:55 -0700 | [diff] [blame] | 736 | return 1; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 737 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 738 | /* For other security levels we need the link key. */ |
| 739 | if (!(conn->link_mode & HCI_LM_AUTH)) |
| 740 | goto auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 742 | /* An authenticated combination key has sufficient security for any |
| 743 | security level. */ |
| 744 | if (conn->key_type == HCI_LK_AUTH_COMBINATION) |
| 745 | goto encrypt; |
| 746 | |
| 747 | /* An unauthenticated combination key has sufficient security for |
| 748 | security level 1 and 2. */ |
| 749 | if (conn->key_type == HCI_LK_UNAUTH_COMBINATION && |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 750 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 751 | goto encrypt; |
| 752 | |
| 753 | /* A combination key has always sufficient security for the security |
| 754 | levels 1 or 2. High security level requires the combination key |
| 755 | is generated using maximum PIN code length (16). |
| 756 | For pre 2.1 units. */ |
| 757 | if (conn->key_type == HCI_LK_COMBINATION && |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 758 | (sec_level != BT_SECURITY_HIGH || conn->pin_length == 16)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 759 | goto encrypt; |
| 760 | |
| 761 | auth: |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 762 | if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | return 0; |
| 764 | |
Luiz Augusto von Dentz | 6fdf658 | 2011-06-13 15:37:35 +0300 | [diff] [blame] | 765 | if (!hci_conn_auth(conn, sec_level, auth_type)) |
| 766 | return 0; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 767 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 768 | encrypt: |
| 769 | if (conn->link_mode & HCI_LM_ENCRYPT) |
| 770 | return 1; |
| 771 | |
| 772 | hci_conn_encrypt(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | return 0; |
| 774 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 775 | EXPORT_SYMBOL(hci_conn_security); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 777 | /* Check secure link requirement */ |
| 778 | int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) |
| 779 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 780 | BT_DBG("hcon %p", conn); |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 781 | |
| 782 | if (sec_level != BT_SECURITY_HIGH) |
| 783 | return 1; /* Accept if non-secure is required */ |
| 784 | |
Waldemar Rymarkiewicz | ef4177e | 2011-06-02 14:24:52 +0200 | [diff] [blame] | 785 | if (conn->sec_level == BT_SECURITY_HIGH) |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 786 | return 1; |
| 787 | |
| 788 | return 0; /* Reject not secure link */ |
| 789 | } |
| 790 | EXPORT_SYMBOL(hci_conn_check_secure); |
| 791 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | /* Change link key */ |
| 793 | int hci_conn_change_link_key(struct hci_conn *conn) |
| 794 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 795 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 797 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | struct hci_cp_change_conn_link_key cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 799 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 800 | hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 801 | sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 803 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | return 0; |
| 805 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | |
| 807 | /* Switch role */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 808 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 810 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | |
| 812 | if (!role && conn->link_mode & HCI_LM_MASTER) |
| 813 | return 1; |
| 814 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 815 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | struct hci_cp_switch_role cp; |
| 817 | bacpy(&cp.bdaddr, &conn->dst); |
| 818 | cp.role = role; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 819 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 821 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | return 0; |
| 823 | } |
| 824 | EXPORT_SYMBOL(hci_conn_switch_role); |
| 825 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 826 | /* Enter active mode */ |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 827 | 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] | 828 | { |
| 829 | struct hci_dev *hdev = conn->hdev; |
| 830 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 831 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 832 | |
| 833 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 834 | return; |
| 835 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 836 | if (conn->mode != HCI_CM_SNIFF) |
| 837 | goto timer; |
| 838 | |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 839 | if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 840 | goto timer; |
| 841 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 842 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 843 | struct hci_cp_exit_sniff_mode cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 844 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 845 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | timer: |
| 849 | if (hdev->idle_timeout > 0) |
| 850 | mod_timer(&conn->idle_timer, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 851 | jiffies + msecs_to_jiffies(hdev->idle_timeout)); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 852 | } |
| 853 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | /* Drop all connection on the device */ |
| 855 | void hci_conn_hash_flush(struct hci_dev *hdev) |
| 856 | { |
| 857 | struct hci_conn_hash *h = &hdev->conn_hash; |
Andrei Emeltchenko | 3c4e0df | 2012-02-02 10:32:17 +0200 | [diff] [blame] | 858 | struct hci_conn *c, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | |
| 860 | BT_DBG("hdev %s", hdev->name); |
| 861 | |
Andrei Emeltchenko | 3c4e0df | 2012-02-02 10:32:17 +0200 | [diff] [blame] | 862 | list_for_each_entry_safe(c, n, &h->list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | c->state = BT_CLOSED; |
| 864 | |
Andrei Emeltchenko | 9f5a0d7 | 2011-11-07 14:20:25 +0200 | [diff] [blame] | 865 | hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | hci_conn_del(c); |
| 867 | } |
| 868 | } |
| 869 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 870 | /* Check pending connect attempts */ |
| 871 | void hci_conn_check_pending(struct hci_dev *hdev) |
| 872 | { |
| 873 | struct hci_conn *conn; |
| 874 | |
| 875 | BT_DBG("hdev %s", hdev->name); |
| 876 | |
| 877 | hci_dev_lock(hdev); |
| 878 | |
| 879 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); |
| 880 | if (conn) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 881 | hci_acl_create_connection(conn); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 882 | |
| 883 | hci_dev_unlock(hdev); |
| 884 | } |
| 885 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | int hci_get_conn_list(void __user *arg) |
| 887 | { |
Gustavo Padovan | fc5fef6 | 2012-05-23 04:04:19 -0300 | [diff] [blame] | 888 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | struct hci_conn_list_req req, *cl; |
| 890 | struct hci_conn_info *ci; |
| 891 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | int n = 0, size, err; |
| 893 | |
| 894 | if (copy_from_user(&req, arg, sizeof(req))) |
| 895 | return -EFAULT; |
| 896 | |
| 897 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) |
| 898 | return -EINVAL; |
| 899 | |
| 900 | size = sizeof(req) + req.conn_num * sizeof(*ci); |
| 901 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 902 | cl = kmalloc(size, GFP_KERNEL); |
| 903 | if (!cl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | return -ENOMEM; |
| 905 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 906 | hdev = hci_dev_get(req.dev_id); |
| 907 | if (!hdev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | kfree(cl); |
| 909 | return -ENODEV; |
| 910 | } |
| 911 | |
| 912 | ci = cl->conn_info; |
| 913 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 914 | hci_dev_lock(hdev); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 915 | list_for_each_entry(c, &hdev->conn_hash.list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | bacpy(&(ci + n)->bdaddr, &c->dst); |
| 917 | (ci + n)->handle = c->handle; |
| 918 | (ci + n)->type = c->type; |
| 919 | (ci + n)->out = c->out; |
| 920 | (ci + n)->state = c->state; |
| 921 | (ci + n)->link_mode = c->link_mode; |
| 922 | if (++n >= req.conn_num) |
| 923 | break; |
| 924 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 925 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | |
| 927 | cl->dev_id = hdev->id; |
| 928 | cl->conn_num = n; |
| 929 | size = sizeof(req) + n * sizeof(*ci); |
| 930 | |
| 931 | hci_dev_put(hdev); |
| 932 | |
| 933 | err = copy_to_user(arg, cl, size); |
| 934 | kfree(cl); |
| 935 | |
| 936 | return err ? -EFAULT : 0; |
| 937 | } |
| 938 | |
| 939 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) |
| 940 | { |
| 941 | struct hci_conn_info_req req; |
| 942 | struct hci_conn_info ci; |
| 943 | struct hci_conn *conn; |
| 944 | char __user *ptr = arg + sizeof(req); |
| 945 | |
| 946 | if (copy_from_user(&req, arg, sizeof(req))) |
| 947 | return -EFAULT; |
| 948 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 949 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
| 951 | if (conn) { |
| 952 | bacpy(&ci.bdaddr, &conn->dst); |
| 953 | ci.handle = conn->handle; |
| 954 | ci.type = conn->type; |
| 955 | ci.out = conn->out; |
| 956 | ci.state = conn->state; |
| 957 | ci.link_mode = conn->link_mode; |
| 958 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 959 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | |
| 961 | if (!conn) |
| 962 | return -ENOENT; |
| 963 | |
| 964 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; |
| 965 | } |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 966 | |
| 967 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) |
| 968 | { |
| 969 | struct hci_auth_info_req req; |
| 970 | struct hci_conn *conn; |
| 971 | |
| 972 | if (copy_from_user(&req, arg, sizeof(req))) |
| 973 | return -EFAULT; |
| 974 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 975 | hci_dev_lock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 976 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); |
| 977 | if (conn) |
| 978 | req.type = conn->auth_type; |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 979 | hci_dev_unlock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 980 | |
| 981 | if (!conn) |
| 982 | return -ENOENT; |
| 983 | |
| 984 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; |
| 985 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 986 | |
| 987 | struct hci_chan *hci_chan_create(struct hci_conn *conn) |
| 988 | { |
| 989 | struct hci_dev *hdev = conn->hdev; |
| 990 | struct hci_chan *chan; |
| 991 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 992 | BT_DBG("%s hcon %p", hdev->name, conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 993 | |
Andre Guedes | 75d7735 | 2012-01-30 09:22:10 -0300 | [diff] [blame] | 994 | chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 995 | if (!chan) |
| 996 | return NULL; |
| 997 | |
| 998 | chan->conn = conn; |
| 999 | skb_queue_head_init(&chan->data_q); |
Mat Martineau | 168df8e | 2012-10-23 15:24:13 -0700 | [diff] [blame] | 1000 | chan->state = BT_CONNECTED; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1001 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 1002 | list_add_rcu(&chan->list, &conn->chan_list); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1003 | |
| 1004 | return chan; |
| 1005 | } |
| 1006 | |
Andrei Emeltchenko | 9472007 | 2012-09-06 15:05:43 +0300 | [diff] [blame] | 1007 | void hci_chan_del(struct hci_chan *chan) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1008 | { |
| 1009 | struct hci_conn *conn = chan->conn; |
| 1010 | struct hci_dev *hdev = conn->hdev; |
| 1011 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1012 | BT_DBG("%s hcon %p chan %p", hdev->name, conn, chan); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1013 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 1014 | list_del_rcu(&chan->list); |
| 1015 | |
| 1016 | synchronize_rcu(); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1017 | |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 1018 | hci_conn_drop(conn); |
Andrei Emeltchenko | e9b0274 | 2012-10-25 15:20:51 +0300 | [diff] [blame] | 1019 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1020 | skb_queue_purge(&chan->data_q); |
| 1021 | kfree(chan); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1022 | } |
| 1023 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 1024 | void hci_chan_list_flush(struct hci_conn *conn) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1025 | { |
Andrei Emeltchenko | 2a5a5ec | 2012-02-02 10:32:18 +0200 | [diff] [blame] | 1026 | struct hci_chan *chan, *n; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1027 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1028 | BT_DBG("hcon %p", conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1029 | |
Andrei Emeltchenko | 2a5a5ec | 2012-02-02 10:32:18 +0200 | [diff] [blame] | 1030 | list_for_each_entry_safe(chan, n, &conn->chan_list, list) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1031 | hci_chan_del(chan); |
| 1032 | } |
Andrei Emeltchenko | 42c4e53 | 2012-10-10 17:38:28 +0300 | [diff] [blame] | 1033 | |
| 1034 | static struct hci_chan *__hci_chan_lookup_handle(struct hci_conn *hcon, |
| 1035 | __u16 handle) |
| 1036 | { |
| 1037 | struct hci_chan *hchan; |
| 1038 | |
| 1039 | list_for_each_entry(hchan, &hcon->chan_list, list) { |
| 1040 | if (hchan->handle == handle) |
| 1041 | return hchan; |
| 1042 | } |
| 1043 | |
| 1044 | return NULL; |
| 1045 | } |
| 1046 | |
| 1047 | struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle) |
| 1048 | { |
| 1049 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 1050 | struct hci_conn *hcon; |
| 1051 | struct hci_chan *hchan = NULL; |
| 1052 | |
| 1053 | rcu_read_lock(); |
| 1054 | |
| 1055 | list_for_each_entry_rcu(hcon, &h->list, list) { |
| 1056 | hchan = __hci_chan_lookup_handle(hcon, handle); |
| 1057 | if (hchan) |
| 1058 | break; |
| 1059 | } |
| 1060 | |
| 1061 | rcu_read_unlock(); |
| 1062 | |
| 1063 | return hchan; |
| 1064 | } |