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> |
Johan Hedberg | 4bc58f5 | 2014-05-20 09:45:47 +0300 | [diff] [blame] | 31 | #include <net/bluetooth/l2cap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
Marcel Holtmann | ac4b723 | 2013-10-10 14:54:16 -0700 | [diff] [blame] | 33 | #include "smp.h" |
Marcel Holtmann | 7024728 | 2013-10-10 14:54:15 -0700 | [diff] [blame] | 34 | #include "a2mp.h" |
| 35 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 36 | struct sco_param { |
| 37 | u16 pkt_type; |
| 38 | u16 max_latency; |
| 39 | }; |
| 40 | |
| 41 | static const struct sco_param sco_param_cvsd[] = { |
| 42 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a }, /* S3 */ |
| 43 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007 }, /* S2 */ |
| 44 | { EDR_ESCO_MASK | ESCO_EV3, 0x0007 }, /* S1 */ |
| 45 | { EDR_ESCO_MASK | ESCO_HV3, 0xffff }, /* D1 */ |
| 46 | { EDR_ESCO_MASK | ESCO_HV1, 0xffff }, /* D0 */ |
| 47 | }; |
| 48 | |
| 49 | static const struct sco_param sco_param_wideband[] = { |
| 50 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000d }, /* T2 */ |
| 51 | { EDR_ESCO_MASK | ESCO_EV3, 0x0008 }, /* T1 */ |
| 52 | }; |
| 53 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 54 | static void hci_le_create_connection_cancel(struct hci_conn *conn) |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 55 | { |
| 56 | hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL); |
| 57 | } |
| 58 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 59 | static void hci_acl_create_connection(struct hci_conn *conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | { |
| 61 | struct hci_dev *hdev = conn->hdev; |
| 62 | struct inquiry_entry *ie; |
| 63 | struct hci_cp_create_conn cp; |
| 64 | |
Andrei Emeltchenko | 42d2d87 | 2012-02-17 11:40:57 +0200 | [diff] [blame] | 65 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
| 67 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 68 | conn->out = true; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 69 | |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 70 | set_bit(HCI_CONN_MASTER, &conn->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 72 | conn->attempt++; |
| 73 | |
Marcel Holtmann | e4e8e37 | 2008-07-14 20:13:47 +0200 | [diff] [blame] | 74 | conn->link_policy = hdev->link_policy; |
| 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | memset(&cp, 0, sizeof(cp)); |
| 77 | bacpy(&cp.bdaddr, &conn->dst); |
| 78 | cp.pscan_rep_mode = 0x02; |
| 79 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 80 | ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
| 81 | if (ie) { |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 82 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
| 83 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; |
| 84 | cp.pscan_mode = ie->data.pscan_mode; |
| 85 | cp.clock_offset = ie->data.clock_offset | |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 86 | cpu_to_le16(0x8000); |
Marcel Holtmann | 41a9621 | 2008-07-14 20:13:48 +0200 | [diff] [blame] | 87 | } |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 90 | if (ie->data.ssp_mode > 0) |
| 91 | set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 94 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 96 | cp.role_switch = 0x01; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | else |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 98 | cp.role_switch = 0x00; |
Marcel Holtmann | 4c67bc7 | 2006-10-15 17:30:56 +0200 | [diff] [blame] | 99 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 100 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | } |
| 102 | |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 103 | static void hci_acl_create_connection_cancel(struct hci_conn *conn) |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 104 | { |
| 105 | struct hci_cp_create_conn_cancel cp; |
| 106 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 107 | BT_DBG("hcon %p", conn); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 108 | |
Andrei Emeltchenko | d095c1e | 2011-12-01 14:33:27 +0200 | [diff] [blame] | 109 | if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 110 | return; |
| 111 | |
| 112 | bacpy(&cp.bdaddr, &conn->dst); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 113 | 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] | 114 | } |
| 115 | |
Claudio Takahasi | 93796fa | 2013-04-11 13:54:56 -0300 | [diff] [blame] | 116 | static void hci_reject_sco(struct hci_conn *conn) |
| 117 | { |
| 118 | struct hci_cp_reject_sync_conn_req cp; |
| 119 | |
| 120 | cp.reason = HCI_ERROR_REMOTE_USER_TERM; |
| 121 | bacpy(&cp.bdaddr, &conn->dst); |
| 122 | |
| 123 | hci_send_cmd(conn->hdev, HCI_OP_REJECT_SYNC_CONN_REQ, sizeof(cp), &cp); |
| 124 | } |
| 125 | |
Andre Guedes | bed7174 | 2013-01-30 11:50:56 -0300 | [diff] [blame] | 126 | void hci_disconnect(struct hci_conn *conn, __u8 reason) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | { |
| 128 | struct hci_cp_disconnect cp; |
| 129 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 130 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | conn->state = BT_DISCONN; |
| 133 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 134 | cp.handle = cpu_to_le16(conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | cp.reason = reason; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 136 | hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | } |
| 138 | |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 139 | static void hci_amp_disconn(struct hci_conn *conn, __u8 reason) |
| 140 | { |
| 141 | struct hci_cp_disconn_phy_link cp; |
| 142 | |
| 143 | BT_DBG("hcon %p", conn); |
| 144 | |
| 145 | conn->state = BT_DISCONN; |
| 146 | |
| 147 | cp.phy_handle = HCI_PHY_HANDLE(conn->handle); |
| 148 | cp.reason = reason; |
| 149 | hci_send_cmd(conn->hdev, HCI_OP_DISCONN_PHY_LINK, |
| 150 | sizeof(cp), &cp); |
| 151 | } |
| 152 | |
Vinicius Costa Gomes | 57f5d0d | 2012-07-27 19:32:54 -0300 | [diff] [blame] | 153 | static void hci_add_sco(struct hci_conn *conn, __u16 handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | { |
| 155 | struct hci_dev *hdev = conn->hdev; |
| 156 | struct hci_cp_add_sco cp; |
| 157 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 158 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
| 160 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 161 | conn->out = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 163 | conn->attempt++; |
| 164 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 165 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 166 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 168 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 171 | bool hci_setup_sync(struct hci_conn *conn, __u16 handle) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 172 | { |
| 173 | struct hci_dev *hdev = conn->hdev; |
| 174 | struct hci_cp_setup_sync_conn cp; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 175 | const struct sco_param *param; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 176 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 177 | BT_DBG("hcon %p", conn); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 178 | |
| 179 | conn->state = BT_CONNECT; |
Johan Hedberg | a0c808b | 2012-01-16 09:49:58 +0200 | [diff] [blame] | 180 | conn->out = true; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 181 | |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 182 | conn->attempt++; |
| 183 | |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 184 | cp.handle = cpu_to_le16(handle); |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 185 | |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 186 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
| 187 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 188 | cp.voice_setting = cpu_to_le16(conn->setting); |
| 189 | |
| 190 | switch (conn->setting & SCO_AIRMODE_MASK) { |
| 191 | case SCO_AIRMODE_TRANSP: |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 192 | if (conn->attempt > ARRAY_SIZE(sco_param_wideband)) |
| 193 | return false; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 194 | cp.retrans_effort = 0x02; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 195 | param = &sco_param_wideband[conn->attempt - 1]; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 196 | break; |
| 197 | case SCO_AIRMODE_CVSD: |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 198 | if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) |
| 199 | return false; |
| 200 | cp.retrans_effort = 0x01; |
| 201 | param = &sco_param_cvsd[conn->attempt - 1]; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 202 | break; |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 203 | default: |
| 204 | return false; |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 205 | } |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 206 | |
Frédéric Dalleau | 2dea632 | 2013-08-19 14:24:03 +0200 | [diff] [blame] | 207 | cp.pkt_type = __cpu_to_le16(param->pkt_type); |
| 208 | cp.max_latency = __cpu_to_le16(param->max_latency); |
| 209 | |
| 210 | if (hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0) |
| 211 | return false; |
| 212 | |
| 213 | return true; |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 214 | } |
| 215 | |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 216 | 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] | 217 | u16 latency, u16 to_multiplier) |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 218 | { |
| 219 | struct hci_cp_le_conn_update cp; |
| 220 | struct hci_dev *hdev = conn->hdev; |
| 221 | |
| 222 | memset(&cp, 0, sizeof(cp)); |
| 223 | |
| 224 | cp.handle = cpu_to_le16(conn->handle); |
| 225 | cp.conn_interval_min = cpu_to_le16(min); |
| 226 | cp.conn_interval_max = cpu_to_le16(max); |
| 227 | cp.conn_latency = cpu_to_le16(latency); |
| 228 | cp.supervision_timeout = cpu_to_le16(to_multiplier); |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 229 | cp.min_ce_len = cpu_to_le16(0x0000); |
| 230 | cp.max_ce_len = cpu_to_le16(0x0000); |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 231 | |
| 232 | hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); |
| 233 | } |
Claudio Takahasi | 2ce603e | 2011-02-16 20:44:53 -0200 | [diff] [blame] | 234 | |
Marcel Holtmann | fe39c7b | 2014-02-27 16:00:28 -0800 | [diff] [blame] | 235 | void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 236 | __u8 ltk[16]) |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 237 | { |
| 238 | struct hci_dev *hdev = conn->hdev; |
| 239 | struct hci_cp_le_start_enc cp; |
| 240 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 241 | BT_DBG("hcon %p", conn); |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 242 | |
| 243 | memset(&cp, 0, sizeof(cp)); |
| 244 | |
| 245 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | fe39c7b | 2014-02-27 16:00:28 -0800 | [diff] [blame] | 246 | cp.rand = rand; |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 247 | cp.ediv = ediv; |
Marcel Holtmann | fe39c7b | 2014-02-27 16:00:28 -0800 | [diff] [blame] | 248 | memcpy(cp.ltk, ltk, sizeof(cp.ltk)); |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 249 | |
| 250 | hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); |
| 251 | } |
Vinicius Costa Gomes | a7a595f | 2011-06-09 18:50:47 -0300 | [diff] [blame] | 252 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 253 | /* Device _must_ be locked */ |
| 254 | void hci_sco_setup(struct hci_conn *conn, __u8 status) |
| 255 | { |
| 256 | struct hci_conn *sco = conn->link; |
| 257 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 258 | if (!sco) |
| 259 | return; |
| 260 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 261 | BT_DBG("hcon %p", conn); |
| 262 | |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 263 | if (!status) { |
| 264 | if (lmp_esco_capable(conn->hdev)) |
| 265 | hci_setup_sync(sco, conn->handle); |
| 266 | else |
| 267 | hci_add_sco(sco, conn->handle); |
| 268 | } else { |
| 269 | hci_proto_connect_cfm(sco, status); |
| 270 | hci_conn_del(sco); |
| 271 | } |
| 272 | } |
| 273 | |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 274 | static void hci_conn_disconnect(struct hci_conn *conn) |
| 275 | { |
| 276 | __u8 reason = hci_proto_disconn_ind(conn); |
| 277 | |
| 278 | switch (conn->type) { |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 279 | case AMP_LINK: |
| 280 | hci_amp_disconn(conn, reason); |
| 281 | break; |
Andre Guedes | 4c02e2d | 2013-01-30 11:50:55 -0300 | [diff] [blame] | 282 | default: |
Andre Guedes | bed7174 | 2013-01-30 11:50:56 -0300 | [diff] [blame] | 283 | hci_disconnect(conn, reason); |
Andre Guedes | 4c02e2d | 2013-01-30 11:50:55 -0300 | [diff] [blame] | 284 | break; |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 285 | } |
| 286 | } |
| 287 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 288 | static void hci_conn_timeout(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 290 | struct hci_conn *conn = container_of(work, struct hci_conn, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 291 | disc_work.work); |
Lukasz Rymanowski | 1d56dc4 | 2014-06-17 13:04:20 +0200 | [diff] [blame] | 292 | int refcnt = atomic_read(&conn->refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 294 | BT_DBG("hcon %p state %s", conn, state_to_string(conn->state)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | |
Lukasz Rymanowski | 1d56dc4 | 2014-06-17 13:04:20 +0200 | [diff] [blame] | 296 | WARN_ON(refcnt < 0); |
| 297 | |
| 298 | /* FIXME: It was observed that in pairing failed scenario, refcnt |
| 299 | * drops below 0. Probably this is because l2cap_conn_del calls |
| 300 | * l2cap_chan_del for each channel, and inside l2cap_chan_del conn is |
| 301 | * dropped. After that loop hci_chan_del is called which also drops |
| 302 | * conn. For now make sure that ACL is alive if refcnt is higher then 0, |
| 303 | * otherwise drop it. |
| 304 | */ |
| 305 | if (refcnt > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | return; |
| 307 | |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 308 | switch (conn->state) { |
| 309 | case BT_CONNECT: |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 310 | case BT_CONNECT2: |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 311 | if (conn->out) { |
| 312 | if (conn->type == ACL_LINK) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 313 | hci_acl_create_connection_cancel(conn); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 314 | else if (conn->type == LE_LINK) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 315 | hci_le_create_connection_cancel(conn); |
Claudio Takahasi | 93796fa | 2013-04-11 13:54:56 -0300 | [diff] [blame] | 316 | } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { |
| 317 | hci_reject_sco(conn); |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 318 | } |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 319 | break; |
Marcel Holtmann | 769be97 | 2008-07-14 20:13:49 +0200 | [diff] [blame] | 320 | case BT_CONFIG: |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 321 | case BT_CONNECTED: |
Andrei Emeltchenko | 53502d6 | 2012-10-10 17:38:27 +0300 | [diff] [blame] | 322 | hci_conn_disconnect(conn); |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 323 | break; |
| 324 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | conn->state = BT_CLOSED; |
Marcel Holtmann | 6ac5934 | 2006-09-26 09:43:48 +0200 | [diff] [blame] | 326 | break; |
| 327 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 330 | /* Enter sniff mode */ |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 331 | static void hci_conn_idle(struct work_struct *work) |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 332 | { |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 333 | struct hci_conn *conn = container_of(work, struct hci_conn, |
| 334 | idle_work.work); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 335 | struct hci_dev *hdev = conn->hdev; |
| 336 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 337 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 338 | |
| 339 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 340 | return; |
| 341 | |
| 342 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) |
| 343 | return; |
| 344 | |
| 345 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) |
| 346 | return; |
| 347 | |
| 348 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { |
| 349 | struct hci_cp_sniff_subrate cp; |
| 350 | cp.handle = cpu_to_le16(conn->handle); |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 351 | cp.max_latency = cpu_to_le16(0); |
| 352 | cp.min_remote_timeout = cpu_to_le16(0); |
| 353 | cp.min_local_timeout = cpu_to_le16(0); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 354 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
| 355 | } |
| 356 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 357 | 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] | 358 | struct hci_cp_sniff_mode cp; |
| 359 | cp.handle = cpu_to_le16(conn->handle); |
| 360 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); |
| 361 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 362 | cp.attempt = cpu_to_le16(4); |
| 363 | cp.timeout = cpu_to_le16(1); |
Gustavo F. Padovan | 416dc94 | 2011-12-07 13:24:33 -0200 | [diff] [blame] | 364 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
| 365 | } |
| 366 | } |
| 367 | |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 368 | static void hci_conn_auto_accept(struct work_struct *work) |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 369 | { |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 370 | struct hci_conn *conn = container_of(work, struct hci_conn, |
| 371 | auto_accept_work.work); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 372 | |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 373 | 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] | 374 | &conn->dst); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 375 | } |
| 376 | |
Johan Hedberg | 9489eca | 2014-02-28 17:45:46 +0200 | [diff] [blame] | 377 | static void le_conn_timeout(struct work_struct *work) |
| 378 | { |
| 379 | struct hci_conn *conn = container_of(work, struct hci_conn, |
| 380 | le_conn_timeout.work); |
Johan Hedberg | 3c85775 | 2014-03-25 10:30:49 +0200 | [diff] [blame] | 381 | struct hci_dev *hdev = conn->hdev; |
Johan Hedberg | 9489eca | 2014-02-28 17:45:46 +0200 | [diff] [blame] | 382 | |
| 383 | BT_DBG(""); |
| 384 | |
Johan Hedberg | 3c85775 | 2014-03-25 10:30:49 +0200 | [diff] [blame] | 385 | /* We could end up here due to having done directed advertising, |
| 386 | * so clean up the state if necessary. This should however only |
| 387 | * happen with broken hardware or if low duty cycle was used |
| 388 | * (which doesn't have a timeout of its own). |
| 389 | */ |
| 390 | if (test_bit(HCI_ADVERTISING, &hdev->dev_flags)) { |
| 391 | u8 enable = 0x00; |
| 392 | hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), |
| 393 | &enable); |
| 394 | hci_le_conn_failed(conn, HCI_ERROR_ADVERTISING_TIMEOUT); |
| 395 | return; |
| 396 | } |
| 397 | |
Johan Hedberg | 9489eca | 2014-02-28 17:45:46 +0200 | [diff] [blame] | 398 | hci_le_create_connection_cancel(conn); |
| 399 | } |
| 400 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) |
| 402 | { |
| 403 | struct hci_conn *conn; |
| 404 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 405 | BT_DBG("%s dst %pMR", hdev->name, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Andre Guedes | cb601d7 | 2012-01-30 09:22:09 -0300 | [diff] [blame] | 407 | conn = kzalloc(sizeof(struct hci_conn), GFP_KERNEL); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 408 | if (!conn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
| 411 | bacpy(&conn->dst, dst); |
Marcel Holtmann | 662e882 | 2013-10-13 05:23:59 -0700 | [diff] [blame] | 412 | bacpy(&conn->src, &hdev->bdaddr); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 413 | conn->hdev = hdev; |
| 414 | conn->type = type; |
| 415 | conn->mode = HCI_CM_ACTIVE; |
| 416 | conn->state = BT_OPEN; |
Andrei Emeltchenko | 93f19c9 | 2009-09-03 12:34:19 +0300 | [diff] [blame] | 417 | conn->auth_type = HCI_AT_GENERAL_BONDING; |
Johan Hedberg | 17fa4b9 | 2011-01-25 13:28:33 +0200 | [diff] [blame] | 418 | conn->io_capability = hdev->io_capability; |
Johan Hedberg | a958355 | 2011-02-19 12:06:01 -0300 | [diff] [blame] | 419 | conn->remote_auth = 0xff; |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 420 | conn->key_type = 0xff; |
Andrzej Kaczmarek | 5a134fa | 2014-05-09 21:35:28 +0200 | [diff] [blame] | 421 | conn->tx_power = HCI_TX_POWER_INVALID; |
Andrzej Kaczmarek | d0455ed | 2014-05-14 13:43:05 +0200 | [diff] [blame] | 422 | conn->max_tx_power = HCI_TX_POWER_INVALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 424 | set_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
Marcel Holtmann | 052b30b | 2009-04-26 20:01:22 +0200 | [diff] [blame] | 425 | conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 426 | |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 427 | switch (type) { |
| 428 | case ACL_LINK: |
| 429 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; |
| 430 | break; |
Johan Hedberg | 9c84d1d | 2014-03-24 20:21:50 +0200 | [diff] [blame] | 431 | case LE_LINK: |
| 432 | /* conn->src should reflect the local identity address */ |
| 433 | hci_copy_identity_address(hdev, &conn->src, &conn->src_type); |
| 434 | break; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 435 | case SCO_LINK: |
| 436 | if (lmp_esco_capable(hdev)) |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 437 | conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
| 438 | (hdev->esco_type & EDR_ESCO_MASK); |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 439 | else |
| 440 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; |
| 441 | break; |
| 442 | case ESCO_LINK: |
Marcel Holtmann | efc7688 | 2009-02-06 09:13:37 +0100 | [diff] [blame] | 443 | conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
Marcel Holtmann | a874641 | 2008-07-14 20:13:46 +0200 | [diff] [blame] | 444 | break; |
| 445 | } |
| 446 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | skb_queue_head_init(&conn->data_q); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 448 | |
Marcel Holtmann | 70c1f20 | 2012-02-22 12:06:43 +0100 | [diff] [blame] | 449 | INIT_LIST_HEAD(&conn->chan_list); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 450 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 451 | INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 452 | INIT_DELAYED_WORK(&conn->auto_accept_work, hci_conn_auto_accept); |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 453 | INIT_DELAYED_WORK(&conn->idle_work, hci_conn_idle); |
Johan Hedberg | 9489eca | 2014-02-28 17:45:46 +0200 | [diff] [blame] | 454 | INIT_DELAYED_WORK(&conn->le_conn_timeout, le_conn_timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | |
| 456 | atomic_set(&conn->refcnt, 0); |
| 457 | |
| 458 | hci_dev_hold(hdev); |
| 459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | hci_conn_hash_add(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 461 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); |
| 463 | |
Marcel Holtmann | a67e899 | 2009-05-02 18:24:06 -0700 | [diff] [blame] | 464 | hci_conn_init_sysfs(conn); |
| 465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | return conn; |
| 467 | } |
| 468 | |
| 469 | int hci_conn_del(struct hci_conn *conn) |
| 470 | { |
| 471 | struct hci_dev *hdev = conn->hdev; |
| 472 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 473 | BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
Gustavo F. Padovan | 19c40e3 | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 475 | cancel_delayed_work_sync(&conn->disc_work); |
Johan Hedberg | 7bc18d9 | 2013-10-16 18:11:39 +0300 | [diff] [blame] | 476 | cancel_delayed_work_sync(&conn->auto_accept_work); |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 477 | cancel_delayed_work_sync(&conn->idle_work); |
Johan Hedberg | 9f61656 | 2011-04-28 11:28:54 -0700 | [diff] [blame] | 478 | |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 479 | if (conn->type == ACL_LINK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | struct hci_conn *sco = conn->link; |
| 481 | if (sco) |
| 482 | sco->link = NULL; |
| 483 | |
| 484 | /* Unacked frames */ |
| 485 | hdev->acl_cnt += conn->sent; |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 486 | } else if (conn->type == LE_LINK) { |
Johan Hedberg | 9489eca | 2014-02-28 17:45:46 +0200 | [diff] [blame] | 487 | cancel_delayed_work_sync(&conn->le_conn_timeout); |
| 488 | |
Ville Tervo | 6ed58ec | 2011-02-10 22:38:48 -0300 | [diff] [blame] | 489 | if (hdev->le_pkts) |
| 490 | hdev->le_cnt += conn->sent; |
| 491 | else |
| 492 | hdev->acl_cnt += conn->sent; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 493 | } else { |
| 494 | struct hci_conn *acl = conn->link; |
| 495 | if (acl) { |
| 496 | acl->link = NULL; |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 497 | hci_conn_drop(acl); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 498 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | } |
| 500 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 501 | hci_chan_list_flush(conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 502 | |
Andrei Emeltchenko | 9740e49 | 2012-05-29 13:59:02 +0300 | [diff] [blame] | 503 | if (conn->amp_mgr) |
| 504 | amp_mgr_put(conn->amp_mgr); |
| 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | hci_conn_hash_del(hdev, conn); |
Gustavo F. Padovan | 3c54711 | 2011-12-14 22:58:44 -0200 | [diff] [blame] | 507 | if (hdev->notify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); |
Marcel Holtmann | 7d0db0a | 2008-07-14 20:13:51 +0200 | [diff] [blame] | 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | skb_queue_purge(&conn->data_q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
David Herrmann | fc225c3 | 2013-04-06 20:28:38 +0200 | [diff] [blame] | 512 | hci_conn_del_sysfs(conn); |
Dave Young | 2ae9a6b | 2009-02-21 16:13:34 +0800 | [diff] [blame] | 513 | |
Marcel Holtmann | 384943e | 2009-05-08 18:20:43 -0700 | [diff] [blame] | 514 | hci_dev_put(hdev); |
| 515 | |
David Herrmann | 8d12356 | 2013-04-06 20:28:39 +0200 | [diff] [blame] | 516 | hci_conn_put(conn); |
Tomas Targownik | 163f4da | 2011-06-30 16:30:44 -0300 | [diff] [blame] | 517 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | return 0; |
| 519 | } |
| 520 | |
| 521 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) |
| 522 | { |
| 523 | int use_src = bacmp(src, BDADDR_ANY); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 524 | struct hci_dev *hdev = NULL, *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | |
Andrei Emeltchenko | 6ed93dc | 2012-09-25 12:49:43 +0300 | [diff] [blame] | 526 | BT_DBG("%pMR -> %pMR", src, dst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 528 | read_lock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 530 | list_for_each_entry(d, &hci_dev_list, list) { |
Gustavo Padovan | 8fc9ced | 2012-05-23 04:04:21 -0300 | [diff] [blame] | 531 | if (!test_bit(HCI_UP, &d->flags) || |
Andrei Emeltchenko | d300fa9 | 2012-06-19 15:21:21 +0300 | [diff] [blame] | 532 | test_bit(HCI_RAW, &d->flags) || |
Marcel Holtmann | af750e9 | 2013-09-03 18:08:37 -0700 | [diff] [blame] | 533 | test_bit(HCI_USER_CHANNEL, &d->dev_flags) || |
Andrei Emeltchenko | d300fa9 | 2012-06-19 15:21:21 +0300 | [diff] [blame] | 534 | d->dev_type != HCI_BREDR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | continue; |
| 536 | |
YOSHIFUJI Hideaki | 8e87d14 | 2007-02-09 23:24:33 +0900 | [diff] [blame] | 537 | /* Simple routing: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | * No source address - find interface with bdaddr != dst |
| 539 | * Source address - find interface with bdaddr == src |
| 540 | */ |
| 541 | |
| 542 | if (use_src) { |
| 543 | if (!bacmp(&d->bdaddr, src)) { |
| 544 | hdev = d; break; |
| 545 | } |
| 546 | } else { |
| 547 | if (bacmp(&d->bdaddr, dst)) { |
| 548 | hdev = d; break; |
| 549 | } |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | if (hdev) |
| 554 | hdev = hci_dev_hold(hdev); |
| 555 | |
Gustavo F. Padovan | f20d09d | 2011-12-22 16:30:27 -0200 | [diff] [blame] | 556 | read_unlock(&hci_dev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | return hdev; |
| 558 | } |
| 559 | EXPORT_SYMBOL(hci_get_route); |
| 560 | |
Andre Guedes | 9bb3c01 | 2014-01-30 18:22:08 -0300 | [diff] [blame] | 561 | /* This function requires the caller holds hdev->lock */ |
Andre Guedes | 06c053f | 2014-02-26 20:21:41 -0300 | [diff] [blame] | 562 | void hci_le_conn_failed(struct hci_conn *conn, u8 status) |
Andre Guedes | 9bb3c01 | 2014-01-30 18:22:08 -0300 | [diff] [blame] | 563 | { |
| 564 | struct hci_dev *hdev = conn->hdev; |
| 565 | |
| 566 | conn->state = BT_CLOSED; |
| 567 | |
| 568 | mgmt_connect_failed(hdev, &conn->dst, conn->type, conn->dst_type, |
| 569 | status); |
| 570 | |
| 571 | hci_proto_connect_cfm(conn, status); |
| 572 | |
| 573 | hci_conn_del(conn); |
Andre Guedes | a4790db | 2014-02-26 20:21:47 -0300 | [diff] [blame] | 574 | |
| 575 | /* Since we may have temporarily stopped the background scanning in |
| 576 | * favor of connection establishment, we should restart it. |
| 577 | */ |
| 578 | hci_update_background_scan(hdev); |
Johan Hedberg | 3c85775 | 2014-03-25 10:30:49 +0200 | [diff] [blame] | 579 | |
| 580 | /* Re-enable advertising in case this was a failed connection |
| 581 | * attempt as a peripheral. |
| 582 | */ |
| 583 | mgmt_reenable_advertising(hdev); |
Andre Guedes | 9bb3c01 | 2014-01-30 18:22:08 -0300 | [diff] [blame] | 584 | } |
| 585 | |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 586 | static void create_le_conn_complete(struct hci_dev *hdev, u8 status) |
| 587 | { |
| 588 | struct hci_conn *conn; |
| 589 | |
| 590 | if (status == 0) |
| 591 | return; |
| 592 | |
| 593 | BT_ERR("HCI request failed to create LE connection: status 0x%2.2x", |
| 594 | status); |
| 595 | |
| 596 | hci_dev_lock(hdev); |
| 597 | |
| 598 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); |
| 599 | if (!conn) |
| 600 | goto done; |
| 601 | |
Andre Guedes | 06c053f | 2014-02-26 20:21:41 -0300 | [diff] [blame] | 602 | hci_le_conn_failed(conn, status); |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 603 | |
| 604 | done: |
| 605 | hci_dev_unlock(hdev); |
| 606 | } |
| 607 | |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 608 | static void hci_req_add_le_create_conn(struct hci_request *req, |
| 609 | struct hci_conn *conn) |
| 610 | { |
| 611 | struct hci_cp_le_create_conn cp; |
| 612 | struct hci_dev *hdev = conn->hdev; |
| 613 | u8 own_addr_type; |
| 614 | |
| 615 | memset(&cp, 0, sizeof(cp)); |
| 616 | |
| 617 | /* Update random address, but set require_privacy to false so |
| 618 | * that we never connect with an unresolvable address. |
| 619 | */ |
| 620 | if (hci_update_random_address(req, false, &own_addr_type)) |
| 621 | return; |
| 622 | |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 623 | cp.scan_interval = cpu_to_le16(hdev->le_scan_interval); |
| 624 | cp.scan_window = cpu_to_le16(hdev->le_scan_window); |
| 625 | bacpy(&cp.peer_addr, &conn->dst); |
| 626 | cp.peer_addr_type = conn->dst_type; |
| 627 | cp.own_address_type = own_addr_type; |
| 628 | cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval); |
| 629 | cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval); |
Joe Perches | dcf4adb | 2014-03-12 10:52:35 -0700 | [diff] [blame] | 630 | cp.supervision_timeout = cpu_to_le16(0x002a); |
| 631 | cp.min_ce_len = cpu_to_le16(0x0000); |
| 632 | cp.max_ce_len = cpu_to_le16(0x0000); |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 633 | |
| 634 | hci_req_add(req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp); |
Johan Hedberg | b46e003 | 2014-02-28 12:54:15 +0200 | [diff] [blame] | 635 | |
| 636 | conn->state = BT_CONNECT; |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 637 | } |
| 638 | |
Johan Hedberg | 3c85775 | 2014-03-25 10:30:49 +0200 | [diff] [blame] | 639 | static void hci_req_directed_advertising(struct hci_request *req, |
| 640 | struct hci_conn *conn) |
| 641 | { |
| 642 | struct hci_dev *hdev = req->hdev; |
| 643 | struct hci_cp_le_set_adv_param cp; |
| 644 | u8 own_addr_type; |
| 645 | u8 enable; |
| 646 | |
| 647 | enable = 0x00; |
| 648 | hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); |
| 649 | |
| 650 | /* Clear the HCI_ADVERTISING bit temporarily so that the |
| 651 | * hci_update_random_address knows that it's safe to go ahead |
| 652 | * and write a new random address. The flag will be set back on |
| 653 | * as soon as the SET_ADV_ENABLE HCI command completes. |
| 654 | */ |
| 655 | clear_bit(HCI_ADVERTISING, &hdev->dev_flags); |
| 656 | |
| 657 | /* Set require_privacy to false so that the remote device has a |
| 658 | * chance of identifying us. |
| 659 | */ |
| 660 | if (hci_update_random_address(req, false, &own_addr_type) < 0) |
| 661 | return; |
| 662 | |
| 663 | memset(&cp, 0, sizeof(cp)); |
| 664 | cp.type = LE_ADV_DIRECT_IND; |
| 665 | cp.own_address_type = own_addr_type; |
| 666 | cp.direct_addr_type = conn->dst_type; |
| 667 | bacpy(&cp.direct_addr, &conn->dst); |
| 668 | cp.channel_map = hdev->le_adv_channel_map; |
| 669 | |
| 670 | hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp); |
| 671 | |
| 672 | enable = 0x01; |
| 673 | hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); |
| 674 | |
| 675 | conn->state = BT_CONNECT; |
| 676 | } |
| 677 | |
Andre Guedes | 04a6c58 | 2014-02-26 20:21:44 -0300 | [diff] [blame] | 678 | struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, |
| 679 | u8 dst_type, u8 sec_level, u8 auth_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | { |
Andre Guedes | 4292f1f | 2014-02-03 13:56:19 -0300 | [diff] [blame] | 681 | struct hci_conn_params *params; |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 682 | struct hci_conn *conn; |
Johan Hedberg | 1ebfcc1 | 2014-02-18 21:41:36 +0200 | [diff] [blame] | 683 | struct smp_irk *irk; |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 684 | struct hci_request req; |
Andre Guedes | 1d399ae | 2013-10-08 08:21:17 -0300 | [diff] [blame] | 685 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 687 | /* Some devices send ATT messages as soon as the physical link is |
| 688 | * established. To be able to handle these ATT messages, the user- |
| 689 | * space first establishes the connection and then starts the pairing |
| 690 | * process. |
| 691 | * |
| 692 | * So if a hci_conn object already exists for the following connection |
| 693 | * attempt, we simply update pending_sec_level and auth_type fields |
| 694 | * and return the object found. |
| 695 | */ |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 696 | conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst); |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 697 | if (conn) { |
| 698 | conn->pending_sec_level = sec_level; |
| 699 | conn->auth_type = auth_type; |
| 700 | goto done; |
Ville Tervo | fcd89c0 | 2011-02-10 22:38:47 -0300 | [diff] [blame] | 701 | } |
| 702 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 703 | /* Since the controller supports only one LE connection attempt at a |
| 704 | * time, we return -EBUSY if there is any connection attempt running. |
| 705 | */ |
| 706 | conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT); |
| 707 | if (conn) |
| 708 | return ERR_PTR(-EBUSY); |
| 709 | |
Marcel Holtmann | edb4b46 | 2014-02-18 15:13:43 -0800 | [diff] [blame] | 710 | /* When given an identity address with existing identity |
| 711 | * resolving key, the connection needs to be established |
| 712 | * to a resolvable random address. |
| 713 | * |
| 714 | * This uses the cached random resolvable address from |
| 715 | * a previous scan. When no cached address is available, |
| 716 | * try connecting to the identity address instead. |
| 717 | * |
| 718 | * Storing the resolvable random address is required here |
| 719 | * to handle connection failures. The address will later |
| 720 | * be resolved back into the original identity address |
| 721 | * from the connect request. |
| 722 | */ |
Johan Hedberg | 1ebfcc1 | 2014-02-18 21:41:36 +0200 | [diff] [blame] | 723 | irk = hci_find_irk_by_addr(hdev, dst, dst_type); |
| 724 | if (irk && bacmp(&irk->rpa, BDADDR_ANY)) { |
| 725 | dst = &irk->rpa; |
| 726 | dst_type = ADDR_LE_DEV_RANDOM; |
| 727 | } |
| 728 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 729 | conn = hci_conn_add(hdev, LE_LINK, dst); |
| 730 | if (!conn) |
| 731 | return ERR_PTR(-ENOMEM); |
| 732 | |
Johan Hedberg | 1ebfcc1 | 2014-02-18 21:41:36 +0200 | [diff] [blame] | 733 | conn->dst_type = dst_type; |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 734 | conn->sec_level = BT_SECURITY_LOW; |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 735 | conn->pending_sec_level = sec_level; |
| 736 | conn->auth_type = auth_type; |
Andre Guedes | 4292f1f | 2014-02-03 13:56:19 -0300 | [diff] [blame] | 737 | |
Johan Hedberg | 3c85775 | 2014-03-25 10:30:49 +0200 | [diff] [blame] | 738 | hci_req_init(&req, hdev); |
| 739 | |
| 740 | if (test_bit(HCI_ADVERTISING, &hdev->dev_flags)) { |
| 741 | hci_req_directed_advertising(&req, conn); |
| 742 | goto create_conn; |
| 743 | } |
| 744 | |
| 745 | conn->out = true; |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 746 | set_bit(HCI_CONN_MASTER, &conn->flags); |
Johan Hedberg | 3c85775 | 2014-03-25 10:30:49 +0200 | [diff] [blame] | 747 | |
Andre Guedes | 4292f1f | 2014-02-03 13:56:19 -0300 | [diff] [blame] | 748 | params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); |
| 749 | if (params) { |
| 750 | conn->le_conn_min_interval = params->conn_min_interval; |
| 751 | conn->le_conn_max_interval = params->conn_max_interval; |
| 752 | } else { |
| 753 | conn->le_conn_min_interval = hdev->le_conn_min_interval; |
| 754 | conn->le_conn_max_interval = hdev->le_conn_max_interval; |
| 755 | } |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 756 | |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 757 | /* If controller is scanning, we stop it since some controllers are |
Johan Hedberg | 81ad6fd | 2014-02-28 20:26:13 +0200 | [diff] [blame] | 758 | * not able to scan and connect at the same time. Also set the |
| 759 | * HCI_LE_SCAN_INTERRUPTED flag so that the command complete |
| 760 | * handler for scan disabling knows to set the correct discovery |
| 761 | * state. |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 762 | */ |
| 763 | if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) { |
| 764 | hci_req_add_le_scan_disable(&req); |
Johan Hedberg | 81ad6fd | 2014-02-28 20:26:13 +0200 | [diff] [blame] | 765 | set_bit(HCI_LE_SCAN_INTERRUPTED, &hdev->dev_flags); |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 766 | } |
| 767 | |
Johan Hedberg | 81ad6fd | 2014-02-28 20:26:13 +0200 | [diff] [blame] | 768 | hci_req_add_le_create_conn(&req, conn); |
| 769 | |
Johan Hedberg | 3c85775 | 2014-03-25 10:30:49 +0200 | [diff] [blame] | 770 | create_conn: |
Johan Hedberg | 81ad6fd | 2014-02-28 20:26:13 +0200 | [diff] [blame] | 771 | err = hci_req_run(&req, create_le_conn_complete); |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 772 | if (err) { |
| 773 | hci_conn_del(conn); |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 774 | return ERR_PTR(err); |
Andre Guedes | 2acf3d9 | 2014-02-26 20:21:42 -0300 | [diff] [blame] | 775 | } |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 776 | |
Andre Guedes | 620ad52 | 2013-10-08 08:21:18 -0300 | [diff] [blame] | 777 | done: |
| 778 | hci_conn_hold(conn); |
Andre Guedes | f1e5d54 | 2013-10-03 18:25:44 -0300 | [diff] [blame] | 779 | return conn; |
Vinicius Costa Gomes | d04aef4 | 2012-07-27 19:32:56 -0300 | [diff] [blame] | 780 | } |
| 781 | |
Andre Guedes | 04a6c58 | 2014-02-26 20:21:44 -0300 | [diff] [blame] | 782 | struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, |
| 783 | u8 sec_level, u8 auth_type) |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 784 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | struct hci_conn *acl; |
Marcel Holtmann | e73439d | 2010-07-26 10:06:00 -0400 | [diff] [blame] | 786 | |
Johan Hedberg | 56f8790 | 2013-10-02 13:43:13 +0300 | [diff] [blame] | 787 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) |
| 788 | return ERR_PTR(-ENOTSUPP); |
| 789 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
| 791 | if (!acl) { |
| 792 | acl = hci_conn_add(hdev, ACL_LINK, dst); |
| 793 | if (!acl) |
Johan Hedberg | 48c7aba | 2012-02-19 14:06:48 +0200 | [diff] [blame] | 794 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | hci_conn_hold(acl); |
| 798 | |
| 799 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
| 800 | acl->sec_level = BT_SECURITY_LOW; |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 801 | acl->pending_sec_level = sec_level; |
| 802 | acl->auth_type = auth_type; |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 803 | hci_acl_create_connection(acl); |
Nick Pelly | c390216 | 2009-11-13 14:16:32 -0800 | [diff] [blame] | 804 | } |
| 805 | |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 806 | return acl; |
| 807 | } |
| 808 | |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 809 | struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, |
| 810 | __u16 setting) |
Vinicius Costa Gomes | db47427 | 2012-07-28 22:35:59 -0300 | [diff] [blame] | 811 | { |
| 812 | struct hci_conn *acl; |
| 813 | struct hci_conn *sco; |
| 814 | |
Frédéric Dalleau | e660ed6 | 2013-08-19 14:23:54 +0200 | [diff] [blame] | 815 | 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] | 816 | if (IS_ERR(acl)) |
Marcel Holtmann | b6a0dc8 | 2007-10-20 14:55:10 +0200 | [diff] [blame] | 817 | return acl; |
| 818 | |
| 819 | sco = hci_conn_hash_lookup_ba(hdev, type, dst); |
| 820 | if (!sco) { |
| 821 | sco = hci_conn_add(hdev, type, dst); |
Marcel Holtmann | 5b7f990 | 2007-07-11 09:51:55 +0200 | [diff] [blame] | 822 | if (!sco) { |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 823 | hci_conn_drop(acl); |
Johan Hedberg | 48c7aba | 2012-02-19 14:06:48 +0200 | [diff] [blame] | 824 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | } |
| 826 | } |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 827 | |
| 828 | acl->link = sco; |
| 829 | sco->link = acl; |
| 830 | |
| 831 | hci_conn_hold(sco); |
| 832 | |
Frédéric Dalleau | 10c62dd | 2013-08-19 14:23:59 +0200 | [diff] [blame] | 833 | sco->setting = setting; |
| 834 | |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 835 | if (acl->state == BT_CONNECTED && |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 836 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 837 | set_bit(HCI_CONN_POWER_SAVE, &acl->flags); |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 838 | hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 839 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 840 | if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) { |
Marcel Holtmann | e7c29cb | 2008-09-09 07:19:20 +0200 | [diff] [blame] | 841 | /* defer SCO setup until mode change completed */ |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 842 | set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags); |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 843 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | } |
| 845 | |
| 846 | hci_sco_setup(acl, 0x00); |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 847 | } |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 848 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 849 | return sco; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | |
| 852 | /* Check link security requirement */ |
| 853 | int hci_conn_check_link_mode(struct hci_conn *conn) |
| 854 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 855 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | |
Marcel Holtmann | 40b552a | 2014-03-19 14:10:25 -0700 | [diff] [blame] | 857 | /* In Secure Connections Only mode, it is required that Secure |
| 858 | * Connections is used and the link is encrypted with AES-CCM |
| 859 | * using a P-256 authenticated combination key. |
| 860 | */ |
| 861 | if (test_bit(HCI_SC_ONLY, &conn->hdev->flags)) { |
| 862 | if (!hci_conn_sc_enabled(conn) || |
| 863 | !test_bit(HCI_CONN_AES_CCM, &conn->flags) || |
| 864 | conn->key_type != HCI_LK_AUTH_COMBINATION_P256) |
| 865 | return 0; |
| 866 | } |
| 867 | |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 868 | if (hci_conn_ssp_enabled(conn) && |
| 869 | !test_bit(HCI_CONN_ENCRYPT, &conn->flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | return 0; |
| 871 | |
| 872 | return 1; |
| 873 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | |
| 875 | /* Authenticate remote device */ |
| 876 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
| 877 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 878 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 880 | if (conn->pending_sec_level > sec_level) |
| 881 | sec_level = conn->pending_sec_level; |
| 882 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | if (sec_level > conn->sec_level) |
Johan Hedberg | 765c2a9 | 2011-01-19 12:06:52 +0530 | [diff] [blame] | 884 | conn->pending_sec_level = sec_level; |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 885 | else if (test_bit(HCI_CONN_AUTH, &conn->flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | return 1; |
| 887 | |
Johan Hedberg | 65cf686 | 2011-01-19 12:06:49 +0530 | [diff] [blame] | 888 | /* Make sure we preserve an existing MITM requirement*/ |
| 889 | auth_type |= (conn->auth_type & 0x01); |
| 890 | |
Marcel Holtmann | 96a3183 | 2009-02-12 16:23:03 +0100 | [diff] [blame] | 891 | conn->auth_type = auth_type; |
| 892 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 893 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | struct hci_cp_auth_requested cp; |
Peter Hurley | b7d05ba | 2012-01-13 15:11:30 +0100 | [diff] [blame] | 895 | |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 896 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 897 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 898 | sizeof(cp), &cp); |
Johan Hedberg | 09da1f3 | 2014-04-11 12:02:32 -0700 | [diff] [blame] | 899 | |
| 900 | /* If we're already encrypted set the REAUTH_PEND flag, |
| 901 | * otherwise set the ENCRYPT_PEND. |
| 902 | */ |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 903 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 904 | set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); |
Johan Hedberg | 09da1f3 | 2014-04-11 12:02:32 -0700 | [diff] [blame] | 905 | else |
| 906 | set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 908 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | return 0; |
| 910 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 912 | /* Encrypt the the link */ |
| 913 | static void hci_conn_encrypt(struct hci_conn *conn) |
| 914 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 915 | BT_DBG("hcon %p", conn); |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 916 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 917 | if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 918 | struct hci_cp_set_conn_encrypt cp; |
| 919 | cp.handle = cpu_to_le16(conn->handle); |
| 920 | cp.encrypt = 0x01; |
| 921 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 922 | &cp); |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 923 | } |
| 924 | } |
| 925 | |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 926 | /* Enable security */ |
Marcel Holtmann | 0684e5f | 2009-02-09 02:48:38 +0100 | [diff] [blame] | 927 | 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] | 928 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 929 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | |
Vinicius Costa Gomes | d8343f1 | 2012-08-23 21:32:44 -0300 | [diff] [blame] | 931 | if (conn->type == LE_LINK) |
| 932 | return smp_conn_security(conn, sec_level); |
| 933 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 934 | /* For sdp we don't need the link key. */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 935 | if (sec_level == BT_SECURITY_SDP) |
| 936 | return 1; |
| 937 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 938 | /* For non 2.1 devices and low security level we don't need the link |
| 939 | key. */ |
Johan Hedberg | aa64a8b | 2012-01-18 21:33:12 +0200 | [diff] [blame] | 940 | if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn)) |
Marcel Holtmann | 3fdca1e | 2009-04-28 09:04:55 -0700 | [diff] [blame] | 941 | return 1; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 942 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 943 | /* For other security levels we need the link key. */ |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 944 | if (!test_bit(HCI_CONN_AUTH, &conn->flags)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 945 | goto auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | |
Marcel Holtmann | 7b5a924 | 2014-01-15 22:37:39 -0800 | [diff] [blame] | 947 | /* An authenticated FIPS approved combination key has sufficient |
| 948 | * security for security level 4. */ |
| 949 | if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256 && |
| 950 | sec_level == BT_SECURITY_FIPS) |
| 951 | goto encrypt; |
| 952 | |
| 953 | /* An authenticated combination key has sufficient security for |
| 954 | security level 3. */ |
| 955 | if ((conn->key_type == HCI_LK_AUTH_COMBINATION_P192 || |
| 956 | conn->key_type == HCI_LK_AUTH_COMBINATION_P256) && |
| 957 | sec_level == BT_SECURITY_HIGH) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 958 | goto encrypt; |
| 959 | |
| 960 | /* An unauthenticated combination key has sufficient security for |
| 961 | security level 1 and 2. */ |
Marcel Holtmann | 66138ce | 2014-01-10 02:07:20 -0800 | [diff] [blame] | 962 | if ((conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 || |
| 963 | conn->key_type == HCI_LK_UNAUTH_COMBINATION_P256) && |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 964 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 965 | goto encrypt; |
| 966 | |
| 967 | /* A combination key has always sufficient security for the security |
| 968 | levels 1 or 2. High security level requires the combination key |
| 969 | is generated using maximum PIN code length (16). |
| 970 | For pre 2.1 units. */ |
| 971 | if (conn->key_type == HCI_LK_COMBINATION && |
Marcel Holtmann | 7b5a924 | 2014-01-15 22:37:39 -0800 | [diff] [blame] | 972 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW || |
| 973 | conn->pin_length == 16)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 974 | goto encrypt; |
| 975 | |
| 976 | auth: |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 977 | if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | return 0; |
| 979 | |
Luiz Augusto von Dentz | 6fdf658 | 2011-06-13 15:37:35 +0300 | [diff] [blame] | 980 | if (!hci_conn_auth(conn, sec_level, auth_type)) |
| 981 | return 0; |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 982 | |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 983 | encrypt: |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 984 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) |
Waldemar Rymarkiewicz | 13d3931 | 2011-04-28 12:07:55 +0200 | [diff] [blame] | 985 | return 1; |
| 986 | |
| 987 | hci_conn_encrypt(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | return 0; |
| 989 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 990 | EXPORT_SYMBOL(hci_conn_security); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 992 | /* Check secure link requirement */ |
| 993 | int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) |
| 994 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 995 | BT_DBG("hcon %p", conn); |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 996 | |
Marcel Holtmann | 9cb2e03 | 2014-02-01 11:32:25 -0800 | [diff] [blame] | 997 | /* Accept if non-secure or higher security level is required */ |
| 998 | if (sec_level != BT_SECURITY_HIGH && sec_level != BT_SECURITY_FIPS) |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 999 | return 1; |
| 1000 | |
Marcel Holtmann | 9cb2e03 | 2014-02-01 11:32:25 -0800 | [diff] [blame] | 1001 | /* Accept if secure or higher security level is already present */ |
| 1002 | if (conn->sec_level == BT_SECURITY_HIGH || |
| 1003 | conn->sec_level == BT_SECURITY_FIPS) |
| 1004 | return 1; |
| 1005 | |
| 1006 | /* Reject not secure link */ |
| 1007 | return 0; |
Waldemar Rymarkiewicz | b3b1b06 | 2011-05-06 09:42:31 +0200 | [diff] [blame] | 1008 | } |
| 1009 | EXPORT_SYMBOL(hci_conn_check_secure); |
| 1010 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | /* Change link key */ |
| 1012 | int hci_conn_change_link_key(struct hci_conn *conn) |
| 1013 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1014 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 1016 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | struct hci_cp_change_conn_link_key cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 1018 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 1019 | hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, |
Gustavo Padovan | 5974e4c | 2012-05-17 00:36:25 -0300 | [diff] [blame] | 1020 | sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 1022 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | return 0; |
| 1024 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | |
| 1026 | /* Switch role */ |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 1027 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | { |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1029 | BT_DBG("hcon %p", conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 1031 | if (!role && test_bit(HCI_CONN_MASTER, &conn->flags)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | return 1; |
| 1033 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 1034 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | struct hci_cp_switch_role cp; |
| 1036 | bacpy(&cp.bdaddr, &conn->dst); |
| 1037 | cp.role = role; |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1038 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | } |
Marcel Holtmann | 8c1b235 | 2009-01-15 21:58:04 +0100 | [diff] [blame] | 1040 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | return 0; |
| 1042 | } |
| 1043 | EXPORT_SYMBOL(hci_conn_switch_role); |
| 1044 | |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1045 | /* Enter active mode */ |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 1046 | 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] | 1047 | { |
| 1048 | struct hci_dev *hdev = conn->hdev; |
| 1049 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1050 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1051 | |
| 1052 | if (test_bit(HCI_RAW, &hdev->flags)) |
| 1053 | return; |
| 1054 | |
Jaikumar Ganesh | 14b12d0 | 2011-05-23 18:06:04 -0700 | [diff] [blame] | 1055 | if (conn->mode != HCI_CM_SNIFF) |
| 1056 | goto timer; |
| 1057 | |
Johan Hedberg | 58a681e | 2012-01-16 06:47:28 +0200 | [diff] [blame] | 1058 | if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active) |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1059 | goto timer; |
| 1060 | |
Johan Hedberg | 51a8efd | 2012-01-16 06:10:31 +0200 | [diff] [blame] | 1061 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1062 | struct hci_cp_exit_sniff_mode cp; |
YOSHIFUJI Hideaki | aca3192 | 2007-03-25 20:12:50 -0700 | [diff] [blame] | 1063 | cp.handle = cpu_to_le16(conn->handle); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1064 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1065 | } |
| 1066 | |
| 1067 | timer: |
| 1068 | if (hdev->idle_timeout > 0) |
Johan Hedberg | a74a84f | 2013-10-16 18:11:40 +0300 | [diff] [blame] | 1069 | queue_delayed_work(hdev->workqueue, &conn->idle_work, |
| 1070 | msecs_to_jiffies(hdev->idle_timeout)); |
Marcel Holtmann | 04837f6 | 2006-07-03 10:02:33 +0200 | [diff] [blame] | 1071 | } |
| 1072 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | /* Drop all connection on the device */ |
| 1074 | void hci_conn_hash_flush(struct hci_dev *hdev) |
| 1075 | { |
| 1076 | struct hci_conn_hash *h = &hdev->conn_hash; |
Andrei Emeltchenko | 3c4e0df | 2012-02-02 10:32:17 +0200 | [diff] [blame] | 1077 | struct hci_conn *c, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | |
| 1079 | BT_DBG("hdev %s", hdev->name); |
| 1080 | |
Andrei Emeltchenko | 3c4e0df | 2012-02-02 10:32:17 +0200 | [diff] [blame] | 1081 | list_for_each_entry_safe(c, n, &h->list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | c->state = BT_CLOSED; |
| 1083 | |
Andrei Emeltchenko | 9f5a0d7 | 2011-11-07 14:20:25 +0200 | [diff] [blame] | 1084 | hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | hci_conn_del(c); |
| 1086 | } |
| 1087 | } |
| 1088 | |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1089 | /* Check pending connect attempts */ |
| 1090 | void hci_conn_check_pending(struct hci_dev *hdev) |
| 1091 | { |
| 1092 | struct hci_conn *conn; |
| 1093 | |
| 1094 | BT_DBG("hdev %s", hdev->name); |
| 1095 | |
| 1096 | hci_dev_lock(hdev); |
| 1097 | |
| 1098 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); |
| 1099 | if (conn) |
Vinicius Costa Gomes | 1aef866 | 2012-07-27 19:32:55 -0300 | [diff] [blame] | 1100 | hci_acl_create_connection(conn); |
Marcel Holtmann | a9de924 | 2007-10-20 13:33:56 +0200 | [diff] [blame] | 1101 | |
| 1102 | hci_dev_unlock(hdev); |
| 1103 | } |
| 1104 | |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 1105 | static u32 get_link_mode(struct hci_conn *conn) |
| 1106 | { |
| 1107 | u32 link_mode = 0; |
| 1108 | |
| 1109 | if (test_bit(HCI_CONN_MASTER, &conn->flags)) |
| 1110 | link_mode |= HCI_LM_MASTER; |
| 1111 | |
| 1112 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) |
| 1113 | link_mode |= HCI_LM_ENCRYPT; |
| 1114 | |
| 1115 | if (test_bit(HCI_CONN_AUTH, &conn->flags)) |
| 1116 | link_mode |= HCI_LM_AUTH; |
| 1117 | |
| 1118 | if (test_bit(HCI_CONN_SECURE, &conn->flags)) |
| 1119 | link_mode |= HCI_LM_SECURE; |
| 1120 | |
| 1121 | if (test_bit(HCI_CONN_FIPS, &conn->flags)) |
| 1122 | link_mode |= HCI_LM_FIPS; |
| 1123 | |
| 1124 | return link_mode; |
| 1125 | } |
| 1126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | int hci_get_conn_list(void __user *arg) |
| 1128 | { |
Gustavo Padovan | fc5fef6 | 2012-05-23 04:04:19 -0300 | [diff] [blame] | 1129 | struct hci_conn *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | struct hci_conn_list_req req, *cl; |
| 1131 | struct hci_conn_info *ci; |
| 1132 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | int n = 0, size, err; |
| 1134 | |
| 1135 | if (copy_from_user(&req, arg, sizeof(req))) |
| 1136 | return -EFAULT; |
| 1137 | |
| 1138 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) |
| 1139 | return -EINVAL; |
| 1140 | |
| 1141 | size = sizeof(req) + req.conn_num * sizeof(*ci); |
| 1142 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1143 | cl = kmalloc(size, GFP_KERNEL); |
| 1144 | if (!cl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | return -ENOMEM; |
| 1146 | |
Andrei Emeltchenko | 70f23020 | 2010-12-01 16:58:25 +0200 | [diff] [blame] | 1147 | hdev = hci_dev_get(req.dev_id); |
| 1148 | if (!hdev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | kfree(cl); |
| 1150 | return -ENODEV; |
| 1151 | } |
| 1152 | |
| 1153 | ci = cl->conn_info; |
| 1154 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1155 | hci_dev_lock(hdev); |
Luiz Augusto von Dentz | 8035ded | 2011-11-01 10:58:56 +0200 | [diff] [blame] | 1156 | list_for_each_entry(c, &hdev->conn_hash.list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | bacpy(&(ci + n)->bdaddr, &c->dst); |
| 1158 | (ci + n)->handle = c->handle; |
| 1159 | (ci + n)->type = c->type; |
| 1160 | (ci + n)->out = c->out; |
| 1161 | (ci + n)->state = c->state; |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 1162 | (ci + n)->link_mode = get_link_mode(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | if (++n >= req.conn_num) |
| 1164 | break; |
| 1165 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1166 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | |
| 1168 | cl->dev_id = hdev->id; |
| 1169 | cl->conn_num = n; |
| 1170 | size = sizeof(req) + n * sizeof(*ci); |
| 1171 | |
| 1172 | hci_dev_put(hdev); |
| 1173 | |
| 1174 | err = copy_to_user(arg, cl, size); |
| 1175 | kfree(cl); |
| 1176 | |
| 1177 | return err ? -EFAULT : 0; |
| 1178 | } |
| 1179 | |
| 1180 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) |
| 1181 | { |
| 1182 | struct hci_conn_info_req req; |
| 1183 | struct hci_conn_info ci; |
| 1184 | struct hci_conn *conn; |
| 1185 | char __user *ptr = arg + sizeof(req); |
| 1186 | |
| 1187 | if (copy_from_user(&req, arg, sizeof(req))) |
| 1188 | return -EFAULT; |
| 1189 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1190 | hci_dev_lock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
| 1192 | if (conn) { |
| 1193 | bacpy(&ci.bdaddr, &conn->dst); |
| 1194 | ci.handle = conn->handle; |
| 1195 | ci.type = conn->type; |
| 1196 | ci.out = conn->out; |
| 1197 | ci.state = conn->state; |
Johan Hedberg | 4dae279 | 2014-06-24 17:03:50 +0300 | [diff] [blame^] | 1198 | ci.link_mode = get_link_mode(conn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | } |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1200 | hci_dev_unlock(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | |
| 1202 | if (!conn) |
| 1203 | return -ENOENT; |
| 1204 | |
| 1205 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; |
| 1206 | } |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 1207 | |
| 1208 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) |
| 1209 | { |
| 1210 | struct hci_auth_info_req req; |
| 1211 | struct hci_conn *conn; |
| 1212 | |
| 1213 | if (copy_from_user(&req, arg, sizeof(req))) |
| 1214 | return -EFAULT; |
| 1215 | |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1216 | hci_dev_lock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 1217 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); |
| 1218 | if (conn) |
| 1219 | req.type = conn->auth_type; |
Gustavo F. Padovan | 09fd0de | 2011-06-17 13:03:21 -0300 | [diff] [blame] | 1220 | hci_dev_unlock(hdev); |
Marcel Holtmann | 40be492 | 2008-07-14 20:13:50 +0200 | [diff] [blame] | 1221 | |
| 1222 | if (!conn) |
| 1223 | return -ENOENT; |
| 1224 | |
| 1225 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; |
| 1226 | } |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1227 | |
| 1228 | struct hci_chan *hci_chan_create(struct hci_conn *conn) |
| 1229 | { |
| 1230 | struct hci_dev *hdev = conn->hdev; |
| 1231 | struct hci_chan *chan; |
| 1232 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1233 | BT_DBG("%s hcon %p", hdev->name, conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1234 | |
Andre Guedes | 75d7735 | 2012-01-30 09:22:10 -0300 | [diff] [blame] | 1235 | chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1236 | if (!chan) |
| 1237 | return NULL; |
| 1238 | |
| 1239 | chan->conn = conn; |
| 1240 | skb_queue_head_init(&chan->data_q); |
Mat Martineau | 168df8e | 2012-10-23 15:24:13 -0700 | [diff] [blame] | 1241 | chan->state = BT_CONNECTED; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1242 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 1243 | list_add_rcu(&chan->list, &conn->chan_list); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1244 | |
| 1245 | return chan; |
| 1246 | } |
| 1247 | |
Andrei Emeltchenko | 9472007 | 2012-09-06 15:05:43 +0300 | [diff] [blame] | 1248 | void hci_chan_del(struct hci_chan *chan) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1249 | { |
| 1250 | struct hci_conn *conn = chan->conn; |
| 1251 | struct hci_dev *hdev = conn->hdev; |
| 1252 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1253 | 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] | 1254 | |
Gustavo F. Padovan | 8192ede | 2011-12-14 15:08:48 -0200 | [diff] [blame] | 1255 | list_del_rcu(&chan->list); |
| 1256 | |
| 1257 | synchronize_rcu(); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1258 | |
David Herrmann | 76a68ba | 2013-04-06 20:28:37 +0200 | [diff] [blame] | 1259 | hci_conn_drop(conn); |
Andrei Emeltchenko | e9b0274 | 2012-10-25 15:20:51 +0300 | [diff] [blame] | 1260 | |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1261 | skb_queue_purge(&chan->data_q); |
| 1262 | kfree(chan); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1263 | } |
| 1264 | |
Gustavo F. Padovan | 2c33c06 | 2011-12-14 13:02:51 -0200 | [diff] [blame] | 1265 | void hci_chan_list_flush(struct hci_conn *conn) |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1266 | { |
Andrei Emeltchenko | 2a5a5ec | 2012-02-02 10:32:18 +0200 | [diff] [blame] | 1267 | struct hci_chan *chan, *n; |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1268 | |
Andrei Emeltchenko | 38b3fef | 2012-06-15 11:50:28 +0300 | [diff] [blame] | 1269 | BT_DBG("hcon %p", conn); |
Luiz Augusto von Dentz | 73d80de | 2011-11-02 15:52:01 +0200 | [diff] [blame] | 1270 | |
Andrei Emeltchenko | 2a5a5ec | 2012-02-02 10:32:18 +0200 | [diff] [blame] | 1271 | 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] | 1272 | hci_chan_del(chan); |
| 1273 | } |
Andrei Emeltchenko | 42c4e53 | 2012-10-10 17:38:28 +0300 | [diff] [blame] | 1274 | |
| 1275 | static struct hci_chan *__hci_chan_lookup_handle(struct hci_conn *hcon, |
| 1276 | __u16 handle) |
| 1277 | { |
| 1278 | struct hci_chan *hchan; |
| 1279 | |
| 1280 | list_for_each_entry(hchan, &hcon->chan_list, list) { |
| 1281 | if (hchan->handle == handle) |
| 1282 | return hchan; |
| 1283 | } |
| 1284 | |
| 1285 | return NULL; |
| 1286 | } |
| 1287 | |
| 1288 | struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle) |
| 1289 | { |
| 1290 | struct hci_conn_hash *h = &hdev->conn_hash; |
| 1291 | struct hci_conn *hcon; |
| 1292 | struct hci_chan *hchan = NULL; |
| 1293 | |
| 1294 | rcu_read_lock(); |
| 1295 | |
| 1296 | list_for_each_entry_rcu(hcon, &h->list, list) { |
| 1297 | hchan = __hci_chan_lookup_handle(hcon, handle); |
| 1298 | if (hchan) |
| 1299 | break; |
| 1300 | } |
| 1301 | |
| 1302 | rcu_read_unlock(); |
| 1303 | |
| 1304 | return hchan; |
| 1305 | } |