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> |
| 31 | |
Marcel Holtmann | ac4b723 | 2013-10-10 14:54:16 -0700 | [diff] [blame] | 32 | #include "smp.h" |
Marcel Holtmann | 7024728 | 2013-10-10 14:54:15 -0700 | [diff] [blame] | 33 | #include "a2mp.h" |
| 34 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 35 | struct sco_param { |
| 36 | u16 pkt_type; |
| 37 | u16 max_latency; |
| 38 | }; |
| 39 | |
| 40 | static const struct sco_param sco_param_cvsd[] = { |
| 41 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a }, /* S3 */ |
| 42 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007 }, /* S2 */ |
| 43 | { EDR_ESCO_MASK | ESCO_EV3, 0x0007 }, /* S1 */ |
| 44 | { EDR_ESCO_MASK | ESCO_HV3, 0xffff }, /* D1 */ |
| 45 | { EDR_ESCO_MASK | ESCO_HV1, 0xffff }, /* D0 */ |
| 46 | }; |
| 47 | |
| 48 | static const struct sco_param sco_param_wideband[] = { |
| 49 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000d }, /* T2 */ |
| 50 | { EDR_ESCO_MASK | ESCO_EV3, 0x0008 }, /* T1 */ |
| 51 | }; |
| 52 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 53 | static void hci_le_create_connection_cancel(struct hci_conn *conn) |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 54 | { |
| 55 | hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL); |
| 56 | } |
| 57 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 58 | static void hci_acl_create_connection(struct hci_conn *conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | { |
| 60 | struct hci_dev *hdev = conn->hdev; |
| 61 | struct inquiry_entry *ie; |
| 62 | struct hci_cp_create_conn cp; |
| 63 | |
Andrei Emeltchenko | 42d2d87 | 2012-02-17 11:40:57 +0200 | [diff] [blame] | 64 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 67 | conn->out = true; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | conn->link_mode = HCI_LM_MASTER; |
| 70 | |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 71 | conn->attempt++; |
| 72 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 73 | conn->link_policy = hdev->link_policy; |
| 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | memset(&cp, 0, sizeof(cp)); |
| 76 | bacpy(&cp.bdaddr, &conn->dst); |
| 77 | cp.pscan_rep_mode = 0x02; |
| 78 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 79 | ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
| 80 | if (ie) { |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 81 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
| 82 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; |
| 83 | cp.pscan_mode = ie->data.pscan_mode; |
| 84 | cp.clock_offset = ie->data.clock_offset | |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 85 | __constant_cpu_to_le16(0x8000); |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 86 | } |
| 87 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 89 | if (ie->data.ssp_mode > 0) |
| 90 | set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | } |
| 92 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 93 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 95 | cp.role_switch = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | else |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 97 | cp.role_switch = 0x00; |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 98 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 99 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 102 | static void hci_acl_create_connection_cancel(struct hci_conn *conn) |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 103 | { |
| 104 | struct hci_cp_create_conn_cancel cp; |
| 105 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 106 | BT_DBG("hcon %p", conn); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 107 | |
Andrei Emeltchenko | d095c1e | 2011-12-01 14:33:27 +0200 | [diff] [blame] | 108 | if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 109 | return; |
| 110 | |
| 111 | bacpy(&cp.bdaddr, &conn->dst); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 112 | 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] | 113 | } |
| 114 | |
Claudio Takahasi | 93796fa | 2013-04-11 13:54:56 -0300 | [diff] [blame] | 115 | static void hci_reject_sco(struct hci_conn *conn) |
| 116 | { |
| 117 | struct hci_cp_reject_sync_conn_req cp; |
| 118 | |
| 119 | cp.reason = HCI_ERROR_REMOTE_USER_TERM; |
| 120 | bacpy(&cp.bdaddr, &conn->dst); |
| 121 | |
| 122 | hci_send_cmd(conn->hdev, HCI_OP_REJECT_SYNC_CONN_REQ, sizeof(cp), &cp); |
| 123 | } |
| 124 | |
Andre Guedes | bed7174 | 2013-01-30 11:50:56 -0300 | [diff] [blame] | 125 | void hci_disconnect(struct hci_conn *conn, __u8 reason) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | { |
| 127 | struct hci_cp_disconnect cp; |
| 128 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 129 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
| 131 | conn->state = BT_DISCONN; |
| 132 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 133 | cp.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | cp.reason = reason; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 135 | hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | } |
| 137 | |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 138 | static void hci_amp_disconn(struct hci_conn *conn, __u8 reason) |
| 139 | { |
| 140 | struct hci_cp_disconn_phy_link cp; |
| 141 | |
| 142 | BT_DBG("hcon %p", conn); |
| 143 | |
| 144 | conn->state = BT_DISCONN; |
| 145 | |
| 146 | cp.phy_handle = HCI_PHY_HANDLE(conn->handle); |
| 147 | cp.reason = reason; |
| 148 | hci_send_cmd(conn->hdev, HCI_OP_DISCONN_PHY_LINK, |
| 149 | sizeof(cp), &cp); |
| 150 | } |
| 151 | |
Vinicius Costa Gomes | 57f5d0d | 2012-07-27 19:32:54 -0300 | [diff] [blame] | 152 | static void hci_add_sco(struct hci_conn *conn, __u16 handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
| 154 | struct hci_dev *hdev = conn->hdev; |
| 155 | struct hci_cp_add_sco cp; |
| 156 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 157 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
| 159 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 160 | conn->out = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 162 | conn->attempt++; |
| 163 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 164 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 165 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 167 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } |
| 169 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 170 | bool hci_setup_sync(struct hci_conn *conn, __u16 handle) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 171 | { |
| 172 | struct hci_dev *hdev = conn->hdev; |
| 173 | struct hci_cp_setup_sync_conn cp; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 174 | const struct sco_param *param; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 175 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 176 | BT_DBG("hcon %p", conn); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 177 | |
| 178 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 179 | conn->out = true; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 180 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 181 | conn->attempt++; |
| 182 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 183 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 184 | |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 185 | cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40); |
| 186 | cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40); |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 187 | cp.voice_setting = cpu_to_le16(conn->setting); |
| 188 | |
| 189 | switch (conn->setting & SCO_AIRMODE_MASK) { |
| 190 | case SCO_AIRMODE_TRANSP: |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 191 | if (conn->attempt > ARRAY_SIZE(sco_param_wideband)) |
| 192 | return false; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 193 | cp.retrans_effort = 0x02; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 194 | param = &sco_param_wideband[conn->attempt - 1]; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 195 | break; |
| 196 | case SCO_AIRMODE_CVSD: |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 197 | if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) |
| 198 | return false; |
| 199 | cp.retrans_effort = 0x01; |
| 200 | param = &sco_param_cvsd[conn->attempt - 1]; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 201 | break; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 202 | default: |
| 203 | return false; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 204 | } |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 205 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 206 | cp.pkt_type = __cpu_to_le16(param->pkt_type); |
| 207 | cp.max_latency = __cpu_to_le16(param->max_latency); |
| 208 | |
| 209 | if (hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0) |
| 210 | return false; |
| 211 | |
| 212 | return true; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 213 | } |
| 214 | |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 215 | 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] | 216 | u16 latency, u16 to_multiplier) |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 217 | { |
| 218 | struct hci_cp_le_conn_update cp; |
| 219 | struct hci_dev *hdev = conn->hdev; |
| 220 | |
| 221 | memset(&cp, 0, sizeof(cp)); |
| 222 | |
| 223 | cp.handle = cpu_to_le16(conn->handle); |
| 224 | cp.conn_interval_min = cpu_to_le16(min); |
| 225 | cp.conn_interval_max = cpu_to_le16(max); |
| 226 | cp.conn_latency = cpu_to_le16(latency); |
| 227 | cp.supervision_timeout = cpu_to_le16(to_multiplier); |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 228 | cp.min_ce_len = __constant_cpu_to_le16(0x0001); |
| 229 | cp.max_ce_len = __constant_cpu_to_le16(0x0001); |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 230 | |
| 231 | hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); |
| 232 | } |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 233 | |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 234 | 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] | 235 | __u8 ltk[16]) |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 236 | { |
| 237 | struct hci_dev *hdev = conn->hdev; |
| 238 | struct hci_cp_le_start_enc cp; |
| 239 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 240 | BT_DBG("hcon %p", conn); |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 241 | |
| 242 | memset(&cp, 0, sizeof(cp)); |
| 243 | |
| 244 | cp.handle = cpu_to_le16(conn->handle); |
| 245 | memcpy(cp.ltk, ltk, sizeof(cp.ltk)); |
| 246 | cp.ediv = ediv; |
Anderson Briglia | 51beabd | 2011-09-19 14:41:09 -0400 | [diff] [blame] | 247 | memcpy(cp.rand, rand, sizeof(cp.rand)); |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 248 | |
| 249 | hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); |
| 250 | } |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 251 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 252 | /* Device _must_ be locked */ |
| 253 | void hci_sco_setup(struct hci_conn *conn, __u8 status) |
| 254 | { |
| 255 | struct hci_conn *sco = conn->link; |
| 256 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 257 | if (!sco) |
| 258 | return; |
| 259 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 260 | BT_DBG("hcon %p", conn); |
| 261 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 262 | if (!status) { |
| 263 | if (lmp_esco_capable(conn->hdev)) |
| 264 | hci_setup_sync(sco, conn->handle); |
| 265 | else |
| 266 | hci_add_sco(sco, conn->handle); |
| 267 | } else { |
| 268 | hci_proto_connect_cfm(sco, status); |
| 269 | hci_conn_del(sco); |
| 270 | } |
| 271 | } |
| 272 | |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 273 | static void hci_conn_disconnect(struct hci_conn *conn) |
| 274 | { |
| 275 | __u8 reason = hci_proto_disconn_ind(conn); |
| 276 | |
| 277 | switch (conn->type) { |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 278 | case AMP_LINK: |
| 279 | hci_amp_disconn(conn, reason); |
| 280 | break; |
Andre Guedes | 4c02e2d | 2013-01-30 11:50:55 -0300 | [diff] [blame] | 281 | default: |
Andre Guedes | bed7174 | 2013-01-30 11:50:56 -0300 | [diff] [blame] | 282 | hci_disconnect(conn, reason); |
Andre Guedes | 4c02e2d | 2013-01-30 11:50:55 -0300 | [diff] [blame] | 283 | break; |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 284 | } |
| 285 | } |
| 286 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 287 | static void hci_conn_timeout(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | { |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 289 | struct hci_conn *conn = container_of(work, struct hci_conn, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 290 | disc_work.work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 292 | BT_DBG("hcon %p state %s", conn, state_to_string(conn->state)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
| 294 | if (atomic_read(&conn->refcnt)) |
| 295 | return; |
| 296 | |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 297 | switch (conn->state) { |
| 298 | case BT_CONNECT: |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 299 | case BT_CONNECT2: |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 300 | if (conn->out) { |
| 301 | if (conn->type == ACL_LINK) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 302 | hci_acl_create_connection_cancel(conn); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 303 | else if (conn->type == LE_LINK) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 304 | hci_le_create_connection_cancel(conn); |
Claudio Takahasi | 93796fa | 2013-04-11 13:54:56 -0300 | [diff] [blame] | 305 | } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { |
| 306 | hci_reject_sco(conn); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 307 | } |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 308 | break; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 309 | case BT_CONFIG: |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 310 | case BT_CONNECTED: |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 311 | hci_conn_disconnect(conn); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 312 | break; |
| 313 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | conn->state = BT_CLOSED; |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 315 | break; |
| 316 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | } |
| 318 | |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 319 | /* Enter sniff mode */ |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 320 | static void hci_conn_idle(struct work_struct *work) |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 321 | { |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 322 | struct hci_conn *conn = container_of(work, struct hci_conn, |
| 323 | idle_work.work); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 324 | struct hci_dev *hdev = conn->hdev; |
| 325 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 326 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 327 | |
| 328 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 329 | return; |
| 330 | |
| 331 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) |
| 332 | return; |
| 333 | |
| 334 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) |
| 335 | return; |
| 336 | |
| 337 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { |
| 338 | struct hci_cp_sniff_subrate cp; |
| 339 | cp.handle = cpu_to_le16(conn->handle); |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 340 | cp.max_latency = __constant_cpu_to_le16(0); |
| 341 | cp.min_remote_timeout = __constant_cpu_to_le16(0); |
| 342 | cp.min_local_timeout = __constant_cpu_to_le16(0); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 343 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
| 344 | } |
| 345 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 346 | 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] | 347 | struct hci_cp_sniff_mode cp; |
| 348 | cp.handle = cpu_to_le16(conn->handle); |
| 349 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); |
| 350 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); |
Andrei Emeltchenko | 82781e6 | 2012-05-25 11:38:27 +0300 | [diff] [blame] | 351 | cp.attempt = __constant_cpu_to_le16(4); |
| 352 | cp.timeout = __constant_cpu_to_le16(1); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 353 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
| 354 | } |
| 355 | } |
| 356 | |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 357 | static void hci_conn_auto_accept(struct work_struct *work) |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 358 | { |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 359 | struct hci_conn *conn = container_of(work, struct hci_conn, |
| 360 | auto_accept_work.work); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 361 | |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 362 | hci_send_cmd(conn->hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 363 | &conn->dst); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 364 | } |
| 365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) |
| 367 | { |
| 368 | struct hci_conn *conn; |
| 369 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 370 | BT_DBG("%s dst %pMR", hdev->name, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
Andre Guedes | cb601d7 | 2012-01-30 09:22:09 -0300 | [diff] [blame] | 372 | conn = kzalloc(sizeof(struct hci_conn), GFP_KERNEL); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 373 | if (!conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
| 376 | bacpy(&conn->dst, dst); |
Marcel Holtmann | 662e882 | 2013-10-13 05:23:59 -0700 | [diff] [blame] | 377 | bacpy(&conn->src, &hdev->bdaddr); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 378 | conn->hdev = hdev; |
| 379 | conn->type = type; |
| 380 | conn->mode = HCI_CM_ACTIVE; |
| 381 | conn->state = BT_OPEN; |
Andrei Emeltchenko | 93f19c9 | 2009-09-03 12:34:19 +0300 | [diff] [blame] | 382 | conn->auth_type = HCI_AT_GENERAL_BONDING; |
Johan Hedberg | 17fa4b9 | 2011-01-25 13:28:33 +0200 | [diff] [blame] | 383 | conn->io_capability = hdev->io_capability; |
Johan Hedberg | a958355 | 2011-02-19 12:06:01 -0300 | [diff] [blame] | 384 | conn->remote_auth = 0xff; |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 385 | conn->key_type = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 387 | set_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
Marcel Holtmann | 052b30b | 2009-04-26 20:01:22 +0200 | [diff] [blame] | 388 | conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 389 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 390 | switch (type) { |
| 391 | case ACL_LINK: |
| 392 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; |
| 393 | break; |
| 394 | case SCO_LINK: |
| 395 | if (lmp_esco_capable(hdev)) |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 396 | conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
| 397 | (hdev->esco_type & EDR_ESCO_MASK); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 398 | else |
| 399 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; |
| 400 | break; |
| 401 | case ESCO_LINK: |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 402 | conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 403 | break; |
| 404 | } |
| 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | skb_queue_head_init(&conn->data_q); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 407 | |
Marcel Holtmann | 70c1f20 | 2012-02-22 12:06:43 +0100 | [diff] [blame] | 408 | INIT_LIST_HEAD(&conn->chan_list); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 409 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 410 | INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 411 | INIT_DELAYED_WORK(&conn->auto_accept_work, hci_conn_auto_accept); |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 412 | INIT_DELAYED_WORK(&conn->idle_work, hci_conn_idle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | |
| 414 | atomic_set(&conn->refcnt, 0); |
| 415 | |
| 416 | hci_dev_hold(hdev); |
| 417 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | hci_conn_hash_add(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 419 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); |
| 421 | |
Marcel Holtmann | a67e899 | 2009-05-02 18:24:06 -0700 | [diff] [blame] | 422 | hci_conn_init_sysfs(conn); |
| 423 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | return conn; |
| 425 | } |
| 426 | |
| 427 | int hci_conn_del(struct hci_conn *conn) |
| 428 | { |
| 429 | struct hci_dev *hdev = conn->hdev; |
| 430 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 431 | BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 433 | cancel_delayed_work_sync(&conn->disc_work); |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 434 | cancel_delayed_work_sync(&conn->auto_accept_work); |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 435 | cancel_delayed_work_sync(&conn->idle_work); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 436 | |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 437 | if (conn->type == ACL_LINK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | struct hci_conn *sco = conn->link; |
| 439 | if (sco) |
| 440 | sco->link = NULL; |
| 441 | |
| 442 | /* Unacked frames */ |
| 443 | hdev->acl_cnt += conn->sent; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 444 | } else if (conn->type == LE_LINK) { |
| 445 | if (hdev->le_pkts) |
| 446 | hdev->le_cnt += conn->sent; |
| 447 | else |
| 448 | hdev->acl_cnt += conn->sent; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 449 | } else { |
| 450 | struct hci_conn *acl = conn->link; |
| 451 | if (acl) { |
| 452 | acl->link = NULL; |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 453 | hci_conn_drop(acl); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 454 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | } |
| 456 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 457 | hci_chan_list_flush(conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 458 | |
Andrei Emeltchenko | 9740e49 | 2012-05-29 13:59:02 +0300 | [diff] [blame] | 459 | if (conn->amp_mgr) |
| 460 | amp_mgr_put(conn->amp_mgr); |
| 461 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | hci_conn_hash_del(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 463 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); |
Marcel Holtmann | 7d0db0a | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | skb_queue_purge(&conn->data_q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
David Herrmann | fc225c3 | 2013-04-06 20:28:38 +0200 | [diff] [blame] | 468 | hci_conn_del_sysfs(conn); |
Dave Young | 2ae9a6b | 2009-02-21 16:13:34 +0800 | [diff] [blame] | 469 | |
Marcel Holtmann | 384943e | 2009-05-08 18:20:43 -0700 | [diff] [blame] | 470 | hci_dev_put(hdev); |
| 471 | |
David Herrmann | 8d12356 | 2013-04-06 20:28:39 +0200 | [diff] [blame] | 472 | hci_conn_put(conn); |
Tomas Targownik | 163f4da | 2011-06-30 16:30:44 -0300 | [diff] [blame] | 473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) |
| 478 | { |
| 479 | int use_src = bacmp(src, BDADDR_ANY); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 480 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 482 | BT_DBG("%pMR -> %pMR", src, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 484 | read_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 486 | list_for_each_entry(d, &hci_dev_list, list) { |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 487 | if (!test_bit(HCI_UP, &d->flags) || |
Andrei Emeltchenko | d300fa9 | 2012-06-19 15:21:21 +0300 | [diff] [blame] | 488 | test_bit(HCI_RAW, &d->flags) || |
Marcel Holtmann | af750e9 | 2013-09-03 18:08:37 -0700 | [diff] [blame] | 489 | test_bit(HCI_USER_CHANNEL, &d->dev_flags) || |
Andrei Emeltchenko | d300fa9 | 2012-06-19 15:21:21 +0300 | [diff] [blame] | 490 | d->dev_type != HCI_BREDR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | continue; |
| 492 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 493 | /* Simple routing: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | * No source address - find interface with bdaddr != dst |
| 495 | * Source address - find interface with bdaddr == src |
| 496 | */ |
| 497 | |
| 498 | if (use_src) { |
| 499 | if (!bacmp(&d->bdaddr, src)) { |
| 500 | hdev = d; break; |
| 501 | } |
| 502 | } else { |
| 503 | if (bacmp(&d->bdaddr, dst)) { |
| 504 | hdev = d; break; |
| 505 | } |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | if (hdev) |
| 510 | hdev = hci_dev_hold(hdev); |
| 511 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 512 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | return hdev; |
| 514 | } |
| 515 | EXPORT_SYMBOL(hci_get_route); |
| 516 | |
Andre Guedes | 9bb3c01 | 2014-01-30 18:22:08 -0300 | [diff] [blame] | 517 | /* This function requires the caller holds hdev->lock */ |
| 518 | static void le_conn_failed(struct hci_conn *conn, u8 status) |
| 519 | { |
| 520 | struct hci_dev *hdev = conn->hdev; |
| 521 | |
| 522 | conn->state = BT_CLOSED; |
| 523 | |
| 524 | mgmt_connect_failed(hdev, &conn->dst, conn->type, conn->dst_type, |
| 525 | status); |
| 526 | |
| 527 | hci_proto_connect_cfm(conn, status); |
| 528 | |
| 529 | hci_conn_del(conn); |
| 530 | } |
| 531 | |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 532 | static void create_le_conn_complete(struct hci_dev *hdev, u8 status) |
| 533 | { |
| 534 | struct hci_conn *conn; |
| 535 | |
| 536 | if (status == 0) |
| 537 | return; |
| 538 | |
| 539 | BT_ERR("HCI request failed to create LE connection: status 0x%2.2x", |
| 540 | status); |
| 541 | |
| 542 | hci_dev_lock(hdev); |
| 543 | |
| 544 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); |
| 545 | if (!conn) |
| 546 | goto done; |
| 547 | |
Andre Guedes | 9bb3c01 | 2014-01-30 18:22:08 -0300 | [diff] [blame] | 548 | le_conn_failed(conn, status); |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 549 | |
| 550 | done: |
| 551 | hci_dev_unlock(hdev); |
| 552 | } |
| 553 | |
| 554 | static int hci_create_le_conn(struct hci_conn *conn) |
| 555 | { |
| 556 | struct hci_dev *hdev = conn->hdev; |
| 557 | struct hci_cp_le_create_conn cp; |
| 558 | struct hci_request req; |
| 559 | int err; |
| 560 | |
| 561 | hci_req_init(&req, hdev); |
| 562 | |
| 563 | memset(&cp, 0, sizeof(cp)); |
Marcel Holtmann | bef6473 | 2013-10-11 08:23:19 -0700 | [diff] [blame] | 564 | cp.scan_interval = cpu_to_le16(hdev->le_scan_interval); |
| 565 | cp.scan_window = cpu_to_le16(hdev->le_scan_window); |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 566 | bacpy(&cp.peer_addr, &conn->dst); |
| 567 | cp.peer_addr_type = conn->dst_type; |
Marcel Holtmann | e7c4096 | 2013-10-13 03:57:39 -0700 | [diff] [blame] | 568 | cp.own_address_type = conn->src_type; |
Andre Guedes | 1e406ee | 2014-01-30 18:22:04 -0300 | [diff] [blame] | 569 | cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval); |
| 570 | cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval); |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 571 | cp.supervision_timeout = __constant_cpu_to_le16(0x002a); |
| 572 | cp.min_ce_len = __constant_cpu_to_le16(0x0000); |
| 573 | cp.max_ce_len = __constant_cpu_to_le16(0x0000); |
Marcel Holtmann | 4e70c7e | 2013-10-19 07:09:13 -0700 | [diff] [blame] | 574 | |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 575 | hci_req_add(&req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp); |
| 576 | |
| 577 | err = hci_req_run(&req, create_le_conn_complete); |
| 578 | if (err) { |
| 579 | hci_conn_del(conn); |
| 580 | return err; |
| 581 | } |
| 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 586 | static struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, |
| 587 | u8 dst_type, u8 sec_level, u8 auth_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | { |
Andre Guedes | 4292f1f | 2014-02-03 13:56:19 -0300 | [diff] [blame^] | 589 | struct hci_conn_params *params; |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 590 | struct hci_conn *conn; |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 591 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | |
Johan Hedberg | f3d3444a | 2013-10-05 12:01:04 +0200 | [diff] [blame] | 593 | if (test_bit(HCI_ADVERTISING, &hdev->flags)) |
Johan Hedberg | f155047 | 2012-10-24 21:12:03 +0300 | [diff] [blame] | 594 | return ERR_PTR(-ENOTSUPP); |
| 595 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 596 | /* Some devices send ATT messages as soon as the physical link is |
| 597 | * established. To be able to handle these ATT messages, the user- |
| 598 | * space first establishes the connection and then starts the pairing |
| 599 | * process. |
| 600 | * |
| 601 | * So if a hci_conn object already exists for the following connection |
| 602 | * attempt, we simply update pending_sec_level and auth_type fields |
| 603 | * and return the object found. |
| 604 | */ |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 605 | conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst); |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 606 | if (conn) { |
| 607 | conn->pending_sec_level = sec_level; |
| 608 | conn->auth_type = auth_type; |
| 609 | goto done; |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 610 | } |
| 611 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 612 | /* Since the controller supports only one LE connection attempt at a |
| 613 | * time, we return -EBUSY if there is any connection attempt running. |
| 614 | */ |
| 615 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); |
| 616 | if (conn) |
| 617 | return ERR_PTR(-EBUSY); |
| 618 | |
| 619 | conn = hci_conn_add(hdev, LE_LINK, dst); |
| 620 | if (!conn) |
| 621 | return ERR_PTR(-ENOMEM); |
| 622 | |
Marcel Holtmann | 79d95a1 | 2013-10-13 03:57:38 -0700 | [diff] [blame] | 623 | if (dst_type == BDADDR_LE_PUBLIC) |
| 624 | conn->dst_type = ADDR_LE_DEV_PUBLIC; |
| 625 | else |
| 626 | conn->dst_type = ADDR_LE_DEV_RANDOM; |
Marcel Holtmann | e7c4096 | 2013-10-13 03:57:39 -0700 | [diff] [blame] | 627 | |
Marcel Holtmann | 79830f6 | 2013-10-18 16:38:09 -0700 | [diff] [blame] | 628 | conn->src_type = hdev->own_addr_type; |
Marcel Holtmann | e7c4096 | 2013-10-13 03:57:39 -0700 | [diff] [blame] | 629 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 630 | conn->state = BT_CONNECT; |
| 631 | conn->out = true; |
| 632 | conn->link_mode |= HCI_LM_MASTER; |
| 633 | conn->sec_level = BT_SECURITY_LOW; |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 634 | conn->pending_sec_level = sec_level; |
| 635 | conn->auth_type = auth_type; |
Andre Guedes | 4292f1f | 2014-02-03 13:56:19 -0300 | [diff] [blame^] | 636 | |
| 637 | params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); |
| 638 | if (params) { |
| 639 | conn->le_conn_min_interval = params->conn_min_interval; |
| 640 | conn->le_conn_max_interval = params->conn_max_interval; |
| 641 | } else { |
| 642 | conn->le_conn_min_interval = hdev->le_conn_min_interval; |
| 643 | conn->le_conn_max_interval = hdev->le_conn_max_interval; |
| 644 | } |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 645 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 646 | err = hci_create_le_conn(conn); |
| 647 | if (err) |
| 648 | return ERR_PTR(err); |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 649 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 650 | done: |
| 651 | hci_conn_hold(conn); |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 652 | return conn; |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 653 | } |
| 654 | |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 655 | static struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, |
| 656 | u8 sec_level, u8 auth_type) |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 657 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | struct hci_conn *acl; |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 659 | |
Johan Hedberg | 56f8790 | 2013-10-02 13:43:13 +0300 | [diff] [blame] | 660 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) |
| 661 | return ERR_PTR(-ENOTSUPP); |
| 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
| 664 | if (!acl) { |
| 665 | acl = hci_conn_add(hdev, ACL_LINK, dst); |
| 666 | if (!acl) |
Johan Hedberg | 48c7aba | 2012-02-19 14:06:48 +0200 | [diff] [blame] | 667 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | hci_conn_hold(acl); |
| 671 | |
| 672 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
| 673 | acl->sec_level = BT_SECURITY_LOW; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 674 | acl->pending_sec_level = sec_level; |
| 675 | acl->auth_type = auth_type; |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 676 | hci_acl_create_connection(acl); |
Nick Pelly | c390216 | 2009-11-13 14:16:32 -0800 | [diff] [blame] | 677 | } |
| 678 | |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 679 | return acl; |
| 680 | } |
| 681 | |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 682 | struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, |
| 683 | __u16 setting) |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 684 | { |
| 685 | struct hci_conn *acl; |
| 686 | struct hci_conn *sco; |
| 687 | |
Frédéric Dalleau | e660ed6 | 2013-08-19 14:23:54 +0200 | [diff] [blame] | 688 | 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] | 689 | if (IS_ERR(acl)) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 690 | return acl; |
| 691 | |
| 692 | sco = hci_conn_hash_lookup_ba(hdev, type, dst); |
| 693 | if (!sco) { |
| 694 | sco = hci_conn_add(hdev, type, dst); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 695 | if (!sco) { |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 696 | hci_conn_drop(acl); |
Johan Hedberg | 48c7aba | 2012-02-19 14:06:48 +0200 | [diff] [blame] | 697 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | } |
| 699 | } |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 700 | |
| 701 | acl->link = sco; |
| 702 | sco->link = acl; |
| 703 | |
| 704 | hci_conn_hold(sco); |
| 705 | |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 706 | sco->setting = setting; |
| 707 | |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 708 | if (acl->state == BT_CONNECTED && |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 709 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 710 | set_bit(HCI_CONN_POWER_SAVE, &acl->flags); |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 711 | hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 712 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 713 | if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) { |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 714 | /* defer SCO setup until mode change completed */ |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 715 | set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags); |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 716 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | hci_sco_setup(acl, 0x00); |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 720 | } |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 721 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 722 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 725 | /* Create SCO, ACL or LE connection. */ |
| 726 | struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, |
| 727 | __u8 dst_type, __u8 sec_level, __u8 auth_type) |
| 728 | { |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 729 | 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] | 730 | |
Vinicius Costa Gomes | 4cd2d98 | 2012-07-27 19:32:59 -0300 | [diff] [blame] | 731 | switch (type) { |
| 732 | case LE_LINK: |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 733 | 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] | 734 | case ACL_LINK: |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 735 | return hci_connect_acl(hdev, dst, sec_level, auth_type); |
Vinicius Costa Gomes | 4cd2d98 | 2012-07-27 19:32:59 -0300 | [diff] [blame] | 736 | } |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 737 | |
Vinicius Costa Gomes | 4cd2d98 | 2012-07-27 19:32:59 -0300 | [diff] [blame] | 738 | return ERR_PTR(-EINVAL); |
Vinicius Costa Gomes | b7d839b | 2012-07-27 19:32:58 -0300 | [diff] [blame] | 739 | } |
| 740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | /* Check link security requirement */ |
| 742 | int hci_conn_check_link_mode(struct hci_conn *conn) |
| 743 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 744 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | |
Johan Hedberg | aa64a8b | 2012-01-18 21:33:12 +0200 | [diff] [blame] | 746 | if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | return 0; |
| 748 | |
| 749 | return 1; |
| 750 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
| 752 | /* Authenticate remote device */ |
| 753 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
| 754 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 755 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 757 | if (conn->pending_sec_level > sec_level) |
| 758 | sec_level = conn->pending_sec_level; |
| 759 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | if (sec_level > conn->sec_level) |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 761 | conn->pending_sec_level = sec_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | else if (conn->link_mode & HCI_LM_AUTH) |
| 763 | return 1; |
| 764 | |
Johan Hedberg | 65cf686 | 2011-01-19 12:06:49 +0530 | [diff] [blame] | 765 | /* Make sure we preserve an existing MITM requirement*/ |
| 766 | auth_type |= (conn->auth_type & 0x01); |
| 767 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 768 | conn->auth_type = auth_type; |
| 769 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 770 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | struct hci_cp_auth_requested cp; |
Peter Hurley | b7d05ba | 2012-01-13 15:11:30 +0100 | [diff] [blame] | 772 | |
| 773 | /* encrypt must be pending if auth is also pending */ |
| 774 | set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); |
| 775 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 776 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 777 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 778 | sizeof(cp), &cp); |
Waldemar Rymarkiewicz | 19f8def | 2011-05-31 15:49:25 +0200 | [diff] [blame] | 779 | if (conn->key_type != 0xff) |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 780 | set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 782 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | return 0; |
| 784 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 786 | /* Encrypt the the link */ |
| 787 | static void hci_conn_encrypt(struct hci_conn *conn) |
| 788 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 789 | BT_DBG("hcon %p", conn); |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 790 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 791 | if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 792 | struct hci_cp_set_conn_encrypt cp; |
| 793 | cp.handle = cpu_to_le16(conn->handle); |
| 794 | cp.encrypt = 0x01; |
| 795 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 796 | &cp); |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 797 | } |
| 798 | } |
| 799 | |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 800 | /* Enable security */ |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 801 | 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] | 802 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 803 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | |
Vinicius Costa Gomes | d8343f1 | 2012-08-23 21:32:44 -0300 | [diff] [blame] | 805 | if (conn->type == LE_LINK) |
| 806 | return smp_conn_security(conn, sec_level); |
| 807 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 808 | /* For sdp we don't need the link key. */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 809 | if (sec_level == BT_SECURITY_SDP) |
| 810 | return 1; |
| 811 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 812 | /* For non 2.1 devices and low security level we don't need the link |
| 813 | key. */ |
Johan Hedberg | aa64a8b | 2012-01-18 21:33:12 +0200 | [diff] [blame] | 814 | if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn)) |
Marcel Holtmann | 3fdca1e | 2009-04-28 09:04:55 -0700 | [diff] [blame] | 815 | return 1; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 816 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 817 | /* For other security levels we need the link key. */ |
| 818 | if (!(conn->link_mode & HCI_LM_AUTH)) |
| 819 | goto auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
Marcel Holtmann | 7b5a924 | 2014-01-15 22:37:39 -0800 | [diff] [blame] | 821 | /* An authenticated FIPS approved combination key has sufficient |
| 822 | * security for security level 4. */ |
| 823 | if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256 && |
| 824 | sec_level == BT_SECURITY_FIPS) |
| 825 | goto encrypt; |
| 826 | |
| 827 | /* An authenticated combination key has sufficient security for |
| 828 | security level 3. */ |
| 829 | if ((conn->key_type == HCI_LK_AUTH_COMBINATION_P192 || |
| 830 | conn->key_type == HCI_LK_AUTH_COMBINATION_P256) && |
| 831 | sec_level == BT_SECURITY_HIGH) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 832 | goto encrypt; |
| 833 | |
| 834 | /* An unauthenticated combination key has sufficient security for |
| 835 | security level 1 and 2. */ |
Marcel Holtmann | 66138ce | 2014-01-10 02:07:20 -0800 | [diff] [blame] | 836 | if ((conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 || |
| 837 | conn->key_type == HCI_LK_UNAUTH_COMBINATION_P256) && |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 838 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 839 | goto encrypt; |
| 840 | |
| 841 | /* A combination key has always sufficient security for the security |
| 842 | levels 1 or 2. High security level requires the combination key |
| 843 | is generated using maximum PIN code length (16). |
| 844 | For pre 2.1 units. */ |
| 845 | if (conn->key_type == HCI_LK_COMBINATION && |
Marcel Holtmann | 7b5a924 | 2014-01-15 22:37:39 -0800 | [diff] [blame] | 846 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW || |
| 847 | conn->pin_length == 16)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 848 | goto encrypt; |
| 849 | |
| 850 | auth: |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 851 | if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | return 0; |
| 853 | |
Luiz Augusto von Dentz | 6fdf658 | 2011-06-13 15:37:35 +0300 | [diff] [blame] | 854 | if (!hci_conn_auth(conn, sec_level, auth_type)) |
| 855 | return 0; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 856 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 857 | encrypt: |
| 858 | if (conn->link_mode & HCI_LM_ENCRYPT) |
| 859 | return 1; |
| 860 | |
| 861 | hci_conn_encrypt(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | return 0; |
| 863 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 864 | EXPORT_SYMBOL(hci_conn_security); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 866 | /* Check secure link requirement */ |
| 867 | int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) |
| 868 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 869 | BT_DBG("hcon %p", conn); |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 870 | |
Marcel Holtmann | 9cb2e03 | 2014-02-01 11:32:25 -0800 | [diff] [blame] | 871 | /* Accept if non-secure or higher security level is required */ |
| 872 | if (sec_level != BT_SECURITY_HIGH && sec_level != BT_SECURITY_FIPS) |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 873 | return 1; |
| 874 | |
Marcel Holtmann | 9cb2e03 | 2014-02-01 11:32:25 -0800 | [diff] [blame] | 875 | /* Accept if secure or higher security level is already present */ |
| 876 | if (conn->sec_level == BT_SECURITY_HIGH || |
| 877 | conn->sec_level == BT_SECURITY_FIPS) |
| 878 | return 1; |
| 879 | |
| 880 | /* Reject not secure link */ |
| 881 | return 0; |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 882 | } |
| 883 | EXPORT_SYMBOL(hci_conn_check_secure); |
| 884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | /* Change link key */ |
| 886 | int hci_conn_change_link_key(struct hci_conn *conn) |
| 887 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 888 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 890 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | struct hci_cp_change_conn_link_key cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 892 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 893 | hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 894 | sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 896 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | return 0; |
| 898 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | |
| 900 | /* Switch role */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 901 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 903 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | |
| 905 | if (!role && conn->link_mode & HCI_LM_MASTER) |
| 906 | return 1; |
| 907 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 908 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | struct hci_cp_switch_role cp; |
| 910 | bacpy(&cp.bdaddr, &conn->dst); |
| 911 | cp.role = role; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 912 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 914 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | return 0; |
| 916 | } |
| 917 | EXPORT_SYMBOL(hci_conn_switch_role); |
| 918 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 919 | /* Enter active mode */ |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 920 | 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] | 921 | { |
| 922 | struct hci_dev *hdev = conn->hdev; |
| 923 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 924 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 925 | |
| 926 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 927 | return; |
| 928 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 929 | if (conn->mode != HCI_CM_SNIFF) |
| 930 | goto timer; |
| 931 | |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 932 | if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 933 | goto timer; |
| 934 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 935 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 936 | struct hci_cp_exit_sniff_mode cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 937 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 938 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 939 | } |
| 940 | |
| 941 | timer: |
| 942 | if (hdev->idle_timeout > 0) |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 943 | queue_delayed_work(hdev->workqueue, &conn->idle_work, |
| 944 | msecs_to_jiffies(hdev->idle_timeout)); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 945 | } |
| 946 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | /* Drop all connection on the device */ |
| 948 | void hci_conn_hash_flush(struct hci_dev *hdev) |
| 949 | { |
| 950 | struct hci_conn_hash *h = &hdev->conn_hash; |
Andrei Emeltchenko | 3c4e0df | 2012-02-02 10:32:17 +0200 | [diff] [blame] | 951 | struct hci_conn *c, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | |
| 953 | BT_DBG("hdev %s", hdev->name); |
| 954 | |
Andrei Emeltchenko | 3c4e0df | 2012-02-02 10:32:17 +0200 | [diff] [blame] | 955 | list_for_each_entry_safe(c, n, &h->list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | c->state = BT_CLOSED; |
| 957 | |
Andrei Emeltchenko | 9f5a0d7 | 2011-11-07 14:20:25 +0200 | [diff] [blame] | 958 | hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | hci_conn_del(c); |
| 960 | } |
| 961 | } |
| 962 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 963 | /* Check pending connect attempts */ |
| 964 | void hci_conn_check_pending(struct hci_dev *hdev) |
| 965 | { |
| 966 | struct hci_conn *conn; |
| 967 | |
| 968 | BT_DBG("hdev %s", hdev->name); |
| 969 | |
| 970 | hci_dev_lock(hdev); |
| 971 | |
| 972 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); |
| 973 | if (conn) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 974 | hci_acl_create_connection(conn); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 975 | |
| 976 | hci_dev_unlock(hdev); |
| 977 | } |
| 978 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | int hci_get_conn_list(void __user *arg) |
| 980 | { |
Gustavo Padovan | fc5fef6 | 2012-05-23 04:04:19 -0300 | [diff] [blame] | 981 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | struct hci_conn_list_req req, *cl; |
| 983 | struct hci_conn_info *ci; |
| 984 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | int n = 0, size, err; |
| 986 | |
| 987 | if (copy_from_user(&req, arg, sizeof(req))) |
| 988 | return -EFAULT; |
| 989 | |
| 990 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) |
| 991 | return -EINVAL; |
| 992 | |
| 993 | size = sizeof(req) + req.conn_num * sizeof(*ci); |
| 994 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 995 | cl = kmalloc(size, GFP_KERNEL); |
| 996 | if (!cl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | return -ENOMEM; |
| 998 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 999 | hdev = hci_dev_get(req.dev_id); |
| 1000 | if (!hdev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | kfree(cl); |
| 1002 | return -ENODEV; |
| 1003 | } |
| 1004 | |
| 1005 | ci = cl->conn_info; |
| 1006 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1007 | hci_dev_lock(hdev); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1008 | list_for_each_entry(c, &hdev->conn_hash.list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | bacpy(&(ci + n)->bdaddr, &c->dst); |
| 1010 | (ci + n)->handle = c->handle; |
| 1011 | (ci + n)->type = c->type; |
| 1012 | (ci + n)->out = c->out; |
| 1013 | (ci + n)->state = c->state; |
| 1014 | (ci + n)->link_mode = c->link_mode; |
| 1015 | if (++n >= req.conn_num) |
| 1016 | break; |
| 1017 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1018 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | |
| 1020 | cl->dev_id = hdev->id; |
| 1021 | cl->conn_num = n; |
| 1022 | size = sizeof(req) + n * sizeof(*ci); |
| 1023 | |
| 1024 | hci_dev_put(hdev); |
| 1025 | |
| 1026 | err = copy_to_user(arg, cl, size); |
| 1027 | kfree(cl); |
| 1028 | |
| 1029 | return err ? -EFAULT : 0; |
| 1030 | } |
| 1031 | |
| 1032 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) |
| 1033 | { |
| 1034 | struct hci_conn_info_req req; |
| 1035 | struct hci_conn_info ci; |
| 1036 | struct hci_conn *conn; |
| 1037 | char __user *ptr = arg + sizeof(req); |
| 1038 | |
| 1039 | if (copy_from_user(&req, arg, sizeof(req))) |
| 1040 | return -EFAULT; |
| 1041 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1042 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
| 1044 | if (conn) { |
| 1045 | bacpy(&ci.bdaddr, &conn->dst); |
| 1046 | ci.handle = conn->handle; |
| 1047 | ci.type = conn->type; |
| 1048 | ci.out = conn->out; |
| 1049 | ci.state = conn->state; |
| 1050 | ci.link_mode = conn->link_mode; |
| 1051 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1052 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | |
| 1054 | if (!conn) |
| 1055 | return -ENOENT; |
| 1056 | |
| 1057 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; |
| 1058 | } |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 1059 | |
| 1060 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) |
| 1061 | { |
| 1062 | struct hci_auth_info_req req; |
| 1063 | struct hci_conn *conn; |
| 1064 | |
| 1065 | if (copy_from_user(&req, arg, sizeof(req))) |
| 1066 | return -EFAULT; |
| 1067 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1068 | hci_dev_lock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 1069 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); |
| 1070 | if (conn) |
| 1071 | req.type = conn->auth_type; |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1072 | hci_dev_unlock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 1073 | |
| 1074 | if (!conn) |
| 1075 | return -ENOENT; |
| 1076 | |
| 1077 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; |
| 1078 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1079 | |
| 1080 | struct hci_chan *hci_chan_create(struct hci_conn *conn) |
| 1081 | { |
| 1082 | struct hci_dev *hdev = conn->hdev; |
| 1083 | struct hci_chan *chan; |
| 1084 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1085 | BT_DBG("%s hcon %p", hdev->name, conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1086 | |
Andre Guedes | 75d7735 | 2012-01-30 09:22:10 -0300 | [diff] [blame] | 1087 | chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1088 | if (!chan) |
| 1089 | return NULL; |
| 1090 | |
| 1091 | chan->conn = conn; |
| 1092 | skb_queue_head_init(&chan->data_q); |
Mat Martineau | 168df8e | 2012-10-23 15:24:13 -0700 | [diff] [blame] | 1093 | chan->state = BT_CONNECTED; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1094 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 1095 | list_add_rcu(&chan->list, &conn->chan_list); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1096 | |
| 1097 | return chan; |
| 1098 | } |
| 1099 | |
Andrei Emeltchenko | 9472007 | 2012-09-06 15:05:43 +0300 | [diff] [blame] | 1100 | void hci_chan_del(struct hci_chan *chan) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1101 | { |
| 1102 | struct hci_conn *conn = chan->conn; |
| 1103 | struct hci_dev *hdev = conn->hdev; |
| 1104 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1105 | 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] | 1106 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 1107 | list_del_rcu(&chan->list); |
| 1108 | |
| 1109 | synchronize_rcu(); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1110 | |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 1111 | hci_conn_drop(conn); |
Andrei Emeltchenko | e9b0274 | 2012-10-25 15:20:51 +0300 | [diff] [blame] | 1112 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1113 | skb_queue_purge(&chan->data_q); |
| 1114 | kfree(chan); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1115 | } |
| 1116 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 1117 | void hci_chan_list_flush(struct hci_conn *conn) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1118 | { |
Andrei Emeltchenko | 2a5a5ec | 2012-02-02 10:32:18 +0200 | [diff] [blame] | 1119 | struct hci_chan *chan, *n; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1120 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1121 | BT_DBG("hcon %p", conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1122 | |
Andrei Emeltchenko | 2a5a5ec | 2012-02-02 10:32:18 +0200 | [diff] [blame] | 1123 | 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] | 1124 | hci_chan_del(chan); |
| 1125 | } |
Andrei Emeltchenko | 42c4e53 | 2012-10-10 17:38:28 +0300 | [diff] [blame] | 1126 | |
| 1127 | static struct hci_chan *__hci_chan_lookup_handle(struct hci_conn *hcon, |
| 1128 | __u16 handle) |
| 1129 | { |
| 1130 | struct hci_chan *hchan; |
| 1131 | |
| 1132 | list_for_each_entry(hchan, &hcon->chan_list, list) { |
| 1133 | if (hchan->handle == handle) |
| 1134 | return hchan; |
| 1135 | } |
| 1136 | |
| 1137 | return NULL; |
| 1138 | } |
| 1139 | |
| 1140 | struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle) |
| 1141 | { |
| 1142 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 1143 | struct hci_conn *hcon; |
| 1144 | struct hci_chan *hchan = NULL; |
| 1145 | |
| 1146 | rcu_read_lock(); |
| 1147 | |
| 1148 | list_for_each_entry_rcu(hcon, &h->list, list) { |
| 1149 | hchan = __hci_chan_lookup_handle(hcon, handle); |
| 1150 | if (hchan) |
| 1151 | break; |
| 1152 | } |
| 1153 | |
| 1154 | rcu_read_unlock(); |
| 1155 | |
| 1156 | return hchan; |
| 1157 | } |