11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds BlueZ - Bluetooth protocol stack for Linux 31da177e4SLinus Torvalds Copyright (C) 2000-2001 Qualcomm Incorporated 4590051deSGustavo F. Padovan Copyright (C) 2011 ProFUSION Embedded Systems 51da177e4SLinus Torvalds 61da177e4SLinus Torvalds Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds This program is free software; you can redistribute it and/or modify 91da177e4SLinus Torvalds it under the terms of the GNU General Public License version 2 as 101da177e4SLinus Torvalds published by the Free Software Foundation; 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 131da177e4SLinus Torvalds OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 141da177e4SLinus Torvalds FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 151da177e4SLinus Torvalds IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 161da177e4SLinus Torvalds CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 171da177e4SLinus Torvalds WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 181da177e4SLinus Torvalds ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 191da177e4SLinus Torvalds OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 221da177e4SLinus Torvalds COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 231da177e4SLinus Torvalds SOFTWARE IS DISCLAIMED. 241da177e4SLinus Torvalds */ 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds /* Bluetooth HCI core. */ 271da177e4SLinus Torvalds 288c520a59SGustavo Padovan #include <linux/export.h> 293df92b31SSasha Levin #include <linux/idr.h> 301da177e4SLinus Torvalds 31611b30f7SMarcel Holtmann #include <linux/rfkill.h> 321da177e4SLinus Torvalds 331da177e4SLinus Torvalds #include <net/bluetooth/bluetooth.h> 341da177e4SLinus Torvalds #include <net/bluetooth/hci_core.h> 351da177e4SLinus Torvalds 36ab81cbf9SJohan Hedberg #define AUTO_OFF_TIMEOUT 2000 37ab81cbf9SJohan Hedberg 38b78752ccSMarcel Holtmann static void hci_rx_work(struct work_struct *work); 39c347b765SGustavo F. Padovan static void hci_cmd_work(struct work_struct *work); 403eff45eaSGustavo F. Padovan static void hci_tx_work(struct work_struct *work); 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds /* HCI device list */ 431da177e4SLinus Torvalds LIST_HEAD(hci_dev_list); 441da177e4SLinus Torvalds DEFINE_RWLOCK(hci_dev_list_lock); 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds /* HCI callback list */ 471da177e4SLinus Torvalds LIST_HEAD(hci_cb_list); 481da177e4SLinus Torvalds DEFINE_RWLOCK(hci_cb_list_lock); 491da177e4SLinus Torvalds 503df92b31SSasha Levin /* HCI ID Numbering */ 513df92b31SSasha Levin static DEFINE_IDA(hci_index_ida); 523df92b31SSasha Levin 531da177e4SLinus Torvalds /* ---- HCI notifications ---- */ 541da177e4SLinus Torvalds 556516455dSMarcel Holtmann static void hci_notify(struct hci_dev *hdev, int event) 561da177e4SLinus Torvalds { 57040030efSMarcel Holtmann hci_sock_dev_event(hdev, event); 581da177e4SLinus Torvalds } 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds /* ---- HCI requests ---- */ 611da177e4SLinus Torvalds 6223bb5763SJohan Hedberg void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) 631da177e4SLinus Torvalds { 6423bb5763SJohan Hedberg BT_DBG("%s command 0x%04x result 0x%2.2x", hdev->name, cmd, result); 6523bb5763SJohan Hedberg 66a5040efaSJohan Hedberg /* If this is the init phase check if the completed command matches 67a5040efaSJohan Hedberg * the last init command, and if not just return. 68a5040efaSJohan Hedberg */ 6975fb0e32SJohan Hedberg if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { 7075fb0e32SJohan Hedberg struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; 711036b890SAndrei Emeltchenko u16 opcode = __le16_to_cpu(sent->opcode); 7275fb0e32SJohan Hedberg struct sk_buff *skb; 7375fb0e32SJohan Hedberg 7475fb0e32SJohan Hedberg /* Some CSR based controllers generate a spontaneous 7575fb0e32SJohan Hedberg * reset complete event during init and any pending 7675fb0e32SJohan Hedberg * command will never be completed. In such a case we 7775fb0e32SJohan Hedberg * need to resend whatever was the last sent 7875fb0e32SJohan Hedberg * command. 7975fb0e32SJohan Hedberg */ 8075fb0e32SJohan Hedberg 811036b890SAndrei Emeltchenko if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) 8223bb5763SJohan Hedberg return; 831da177e4SLinus Torvalds 8475fb0e32SJohan Hedberg skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); 8575fb0e32SJohan Hedberg if (skb) { 8675fb0e32SJohan Hedberg skb_queue_head(&hdev->cmd_q, skb); 8775fb0e32SJohan Hedberg queue_work(hdev->workqueue, &hdev->cmd_work); 8875fb0e32SJohan Hedberg } 8975fb0e32SJohan Hedberg 9075fb0e32SJohan Hedberg return; 9175fb0e32SJohan Hedberg } 9275fb0e32SJohan Hedberg 931da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 941da177e4SLinus Torvalds hdev->req_result = result; 951da177e4SLinus Torvalds hdev->req_status = HCI_REQ_DONE; 961da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 971da177e4SLinus Torvalds } 981da177e4SLinus Torvalds } 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds static void hci_req_cancel(struct hci_dev *hdev, int err) 1011da177e4SLinus Torvalds { 1021da177e4SLinus Torvalds BT_DBG("%s err 0x%2.2x", hdev->name, err); 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds if (hdev->req_status == HCI_REQ_PEND) { 1051da177e4SLinus Torvalds hdev->req_result = err; 1061da177e4SLinus Torvalds hdev->req_status = HCI_REQ_CANCELED; 1071da177e4SLinus Torvalds wake_up_interruptible(&hdev->req_wait_q); 1081da177e4SLinus Torvalds } 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds /* Execute request and wait for completion. */ 112a8c5fb1aSGustavo Padovan static int __hci_request(struct hci_dev *hdev, 113a8c5fb1aSGustavo Padovan void (*req)(struct hci_dev *hdev, unsigned long opt), 1141da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1151da177e4SLinus Torvalds { 1161da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 1171da177e4SLinus Torvalds int err = 0; 1181da177e4SLinus Torvalds 1191da177e4SLinus Torvalds BT_DBG("%s start", hdev->name); 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds hdev->req_status = HCI_REQ_PEND; 1221da177e4SLinus Torvalds 1231da177e4SLinus Torvalds add_wait_queue(&hdev->req_wait_q, &wait); 1241da177e4SLinus Torvalds set_current_state(TASK_INTERRUPTIBLE); 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds req(hdev, opt); 1271da177e4SLinus Torvalds schedule_timeout(timeout); 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds remove_wait_queue(&hdev->req_wait_q, &wait); 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds if (signal_pending(current)) 1321da177e4SLinus Torvalds return -EINTR; 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds switch (hdev->req_status) { 1351da177e4SLinus Torvalds case HCI_REQ_DONE: 136e175072fSJoe Perches err = -bt_to_errno(hdev->req_result); 1371da177e4SLinus Torvalds break; 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds case HCI_REQ_CANCELED: 1401da177e4SLinus Torvalds err = -hdev->req_result; 1411da177e4SLinus Torvalds break; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds default: 1441da177e4SLinus Torvalds err = -ETIMEDOUT; 1451da177e4SLinus Torvalds break; 1463ff50b79SStephen Hemminger } 1471da177e4SLinus Torvalds 148a5040efaSJohan Hedberg hdev->req_status = hdev->req_result = 0; 1491da177e4SLinus Torvalds 1501da177e4SLinus Torvalds BT_DBG("%s end: err %d", hdev->name, err); 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds return err; 1531da177e4SLinus Torvalds } 1541da177e4SLinus Torvalds 1556039aa73SGustavo Padovan static int hci_request(struct hci_dev *hdev, 1566039aa73SGustavo Padovan void (*req)(struct hci_dev *hdev, unsigned long opt), 1571da177e4SLinus Torvalds unsigned long opt, __u32 timeout) 1581da177e4SLinus Torvalds { 1591da177e4SLinus Torvalds int ret; 1601da177e4SLinus Torvalds 1617c6a329eSMarcel Holtmann if (!test_bit(HCI_UP, &hdev->flags)) 1627c6a329eSMarcel Holtmann return -ENETDOWN; 1637c6a329eSMarcel Holtmann 1641da177e4SLinus Torvalds /* Serialize all requests */ 1651da177e4SLinus Torvalds hci_req_lock(hdev); 1661da177e4SLinus Torvalds ret = __hci_request(hdev, req, opt, timeout); 1671da177e4SLinus Torvalds hci_req_unlock(hdev); 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds return ret; 1701da177e4SLinus Torvalds } 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) 1731da177e4SLinus Torvalds { 1741da177e4SLinus Torvalds BT_DBG("%s %ld", hdev->name, opt); 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds /* Reset device */ 177f630cf0dSGustavo F. Padovan set_bit(HCI_RESET, &hdev->flags); 178a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 1791da177e4SLinus Torvalds } 1801da177e4SLinus Torvalds 181e61ef499SAndrei Emeltchenko static void bredr_init(struct hci_dev *hdev) 1821da177e4SLinus Torvalds { 183b0916ea0SJohan Hedberg struct hci_cp_delete_stored_link_key cp; 1841ebb9252SMarcel Holtmann __le16 param; 18589f2783dSMarcel Holtmann __u8 flt_type; 1861da177e4SLinus Torvalds 1872455a3eaSAndrei Emeltchenko hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; 1882455a3eaSAndrei Emeltchenko 1891da177e4SLinus Torvalds /* Mandatory initialization */ 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* Reset */ 192a6c511c6SSzymon Janc if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { 193f630cf0dSGustavo F. Padovan set_bit(HCI_RESET, &hdev->flags); 194a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 195f630cf0dSGustavo F. Padovan } 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds /* Read Local Supported Features */ 198a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); 1991da177e4SLinus Torvalds 2001143e5a6SMarcel Holtmann /* Read Local Version */ 201a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); 2021143e5a6SMarcel Holtmann 2031da177e4SLinus Torvalds /* Read Buffer Size (ACL mtu, max pkt, etc.) */ 204a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds /* Read BD Address */ 207a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); 208a9de9248SMarcel Holtmann 209a9de9248SMarcel Holtmann /* Read Class of Device */ 210a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); 211a9de9248SMarcel Holtmann 212a9de9248SMarcel Holtmann /* Read Local Name */ 213a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds /* Read Voice Setting */ 216a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds /* Optional initialization */ 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds /* Clear Event Filters */ 22189f2783dSMarcel Holtmann flt_type = HCI_FLT_CLEAR_ALL; 222a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds /* Connection accept timeout ~20 secs */ 22582781e63SAndrei Emeltchenko param = __constant_cpu_to_le16(0x7d00); 226a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); 227b0916ea0SJohan Hedberg 228b0916ea0SJohan Hedberg bacpy(&cp.bdaddr, BDADDR_ANY); 229b0916ea0SJohan Hedberg cp.delete_all = 1; 230b0916ea0SJohan Hedberg hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); 2311da177e4SLinus Torvalds } 2321da177e4SLinus Torvalds 233e61ef499SAndrei Emeltchenko static void amp_init(struct hci_dev *hdev) 234e61ef499SAndrei Emeltchenko { 2352455a3eaSAndrei Emeltchenko hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; 2362455a3eaSAndrei Emeltchenko 237e61ef499SAndrei Emeltchenko /* Reset */ 238e61ef499SAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); 239e61ef499SAndrei Emeltchenko 240e61ef499SAndrei Emeltchenko /* Read Local Version */ 241e61ef499SAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); 2426bcbc489SAndrei Emeltchenko 2436bcbc489SAndrei Emeltchenko /* Read Local AMP Info */ 2446bcbc489SAndrei Emeltchenko hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); 245e61ef499SAndrei Emeltchenko } 246e61ef499SAndrei Emeltchenko 247e61ef499SAndrei Emeltchenko static void hci_init_req(struct hci_dev *hdev, unsigned long opt) 248e61ef499SAndrei Emeltchenko { 249e61ef499SAndrei Emeltchenko struct sk_buff *skb; 250e61ef499SAndrei Emeltchenko 251e61ef499SAndrei Emeltchenko BT_DBG("%s %ld", hdev->name, opt); 252e61ef499SAndrei Emeltchenko 253e61ef499SAndrei Emeltchenko /* Driver initialization */ 254e61ef499SAndrei Emeltchenko 255e61ef499SAndrei Emeltchenko /* Special commands */ 256e61ef499SAndrei Emeltchenko while ((skb = skb_dequeue(&hdev->driver_init))) { 257e61ef499SAndrei Emeltchenko bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 258e61ef499SAndrei Emeltchenko skb->dev = (void *) hdev; 259e61ef499SAndrei Emeltchenko 260e61ef499SAndrei Emeltchenko skb_queue_tail(&hdev->cmd_q, skb); 261e61ef499SAndrei Emeltchenko queue_work(hdev->workqueue, &hdev->cmd_work); 262e61ef499SAndrei Emeltchenko } 263e61ef499SAndrei Emeltchenko skb_queue_purge(&hdev->driver_init); 264e61ef499SAndrei Emeltchenko 265e61ef499SAndrei Emeltchenko switch (hdev->dev_type) { 266e61ef499SAndrei Emeltchenko case HCI_BREDR: 267e61ef499SAndrei Emeltchenko bredr_init(hdev); 268e61ef499SAndrei Emeltchenko break; 269e61ef499SAndrei Emeltchenko 270e61ef499SAndrei Emeltchenko case HCI_AMP: 271e61ef499SAndrei Emeltchenko amp_init(hdev); 272e61ef499SAndrei Emeltchenko break; 273e61ef499SAndrei Emeltchenko 274e61ef499SAndrei Emeltchenko default: 275e61ef499SAndrei Emeltchenko BT_ERR("Unknown device type %d", hdev->dev_type); 276e61ef499SAndrei Emeltchenko break; 277e61ef499SAndrei Emeltchenko } 278e61ef499SAndrei Emeltchenko 279e61ef499SAndrei Emeltchenko } 280e61ef499SAndrei Emeltchenko 2816ed58ec5SVille Tervo static void hci_le_init_req(struct hci_dev *hdev, unsigned long opt) 2826ed58ec5SVille Tervo { 2836ed58ec5SVille Tervo BT_DBG("%s", hdev->name); 2846ed58ec5SVille Tervo 2856ed58ec5SVille Tervo /* Read LE buffer size */ 2866ed58ec5SVille Tervo hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); 2876ed58ec5SVille Tervo } 2886ed58ec5SVille Tervo 2891da177e4SLinus Torvalds static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) 2901da177e4SLinus Torvalds { 2911da177e4SLinus Torvalds __u8 scan = opt; 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, scan); 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds /* Inquiry and Page scans */ 296a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); 2971da177e4SLinus Torvalds } 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) 3001da177e4SLinus Torvalds { 3011da177e4SLinus Torvalds __u8 auth = opt; 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, auth); 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds /* Authentication */ 306a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); 3071da177e4SLinus Torvalds } 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) 3101da177e4SLinus Torvalds { 3111da177e4SLinus Torvalds __u8 encrypt = opt; 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds BT_DBG("%s %x", hdev->name, encrypt); 3141da177e4SLinus Torvalds 315e4e8e37cSMarcel Holtmann /* Encryption */ 316a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); 3171da177e4SLinus Torvalds } 3181da177e4SLinus Torvalds 319e4e8e37cSMarcel Holtmann static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) 320e4e8e37cSMarcel Holtmann { 321e4e8e37cSMarcel Holtmann __le16 policy = cpu_to_le16(opt); 322e4e8e37cSMarcel Holtmann 323a418b893SMarcel Holtmann BT_DBG("%s %x", hdev->name, policy); 324e4e8e37cSMarcel Holtmann 325e4e8e37cSMarcel Holtmann /* Default link policy */ 326e4e8e37cSMarcel Holtmann hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); 327e4e8e37cSMarcel Holtmann } 328e4e8e37cSMarcel Holtmann 3291da177e4SLinus Torvalds /* Get HCI device by index. 3301da177e4SLinus Torvalds * Device is held on return. */ 3311da177e4SLinus Torvalds struct hci_dev *hci_dev_get(int index) 3321da177e4SLinus Torvalds { 3338035ded4SLuiz Augusto von Dentz struct hci_dev *hdev = NULL, *d; 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds BT_DBG("%d", index); 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds if (index < 0) 3381da177e4SLinus Torvalds return NULL; 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds read_lock(&hci_dev_list_lock); 3418035ded4SLuiz Augusto von Dentz list_for_each_entry(d, &hci_dev_list, list) { 3421da177e4SLinus Torvalds if (d->id == index) { 3431da177e4SLinus Torvalds hdev = hci_dev_hold(d); 3441da177e4SLinus Torvalds break; 3451da177e4SLinus Torvalds } 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds read_unlock(&hci_dev_list_lock); 3481da177e4SLinus Torvalds return hdev; 3491da177e4SLinus Torvalds } 3501da177e4SLinus Torvalds 3511da177e4SLinus Torvalds /* ---- Inquiry support ---- */ 352ff9ef578SJohan Hedberg 35330dc78e1SJohan Hedberg bool hci_discovery_active(struct hci_dev *hdev) 35430dc78e1SJohan Hedberg { 35530dc78e1SJohan Hedberg struct discovery_state *discov = &hdev->discovery; 35630dc78e1SJohan Hedberg 3576fbe195dSAndre Guedes switch (discov->state) { 358343f935bSAndre Guedes case DISCOVERY_FINDING: 3596fbe195dSAndre Guedes case DISCOVERY_RESOLVING: 36030dc78e1SJohan Hedberg return true; 36130dc78e1SJohan Hedberg 3626fbe195dSAndre Guedes default: 36330dc78e1SJohan Hedberg return false; 36430dc78e1SJohan Hedberg } 3656fbe195dSAndre Guedes } 36630dc78e1SJohan Hedberg 367ff9ef578SJohan Hedberg void hci_discovery_set_state(struct hci_dev *hdev, int state) 368ff9ef578SJohan Hedberg { 369ff9ef578SJohan Hedberg BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); 370ff9ef578SJohan Hedberg 371ff9ef578SJohan Hedberg if (hdev->discovery.state == state) 372ff9ef578SJohan Hedberg return; 373ff9ef578SJohan Hedberg 374ff9ef578SJohan Hedberg switch (state) { 375ff9ef578SJohan Hedberg case DISCOVERY_STOPPED: 3767b99b659SAndre Guedes if (hdev->discovery.state != DISCOVERY_STARTING) 377ff9ef578SJohan Hedberg mgmt_discovering(hdev, 0); 378ff9ef578SJohan Hedberg break; 379ff9ef578SJohan Hedberg case DISCOVERY_STARTING: 380ff9ef578SJohan Hedberg break; 381343f935bSAndre Guedes case DISCOVERY_FINDING: 382ff9ef578SJohan Hedberg mgmt_discovering(hdev, 1); 383ff9ef578SJohan Hedberg break; 38430dc78e1SJohan Hedberg case DISCOVERY_RESOLVING: 38530dc78e1SJohan Hedberg break; 386ff9ef578SJohan Hedberg case DISCOVERY_STOPPING: 387ff9ef578SJohan Hedberg break; 388ff9ef578SJohan Hedberg } 389ff9ef578SJohan Hedberg 390ff9ef578SJohan Hedberg hdev->discovery.state = state; 391ff9ef578SJohan Hedberg } 392ff9ef578SJohan Hedberg 3931da177e4SLinus Torvalds static void inquiry_cache_flush(struct hci_dev *hdev) 3941da177e4SLinus Torvalds { 39530883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 396b57c1a56SJohan Hedberg struct inquiry_entry *p, *n; 3971da177e4SLinus Torvalds 398561aafbcSJohan Hedberg list_for_each_entry_safe(p, n, &cache->all, all) { 399561aafbcSJohan Hedberg list_del(&p->all); 400b57c1a56SJohan Hedberg kfree(p); 4011da177e4SLinus Torvalds } 402561aafbcSJohan Hedberg 403561aafbcSJohan Hedberg INIT_LIST_HEAD(&cache->unknown); 404561aafbcSJohan Hedberg INIT_LIST_HEAD(&cache->resolve); 4051da177e4SLinus Torvalds } 4061da177e4SLinus Torvalds 407a8c5fb1aSGustavo Padovan struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 408a8c5fb1aSGustavo Padovan bdaddr_t *bdaddr) 4091da177e4SLinus Torvalds { 41030883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 4111da177e4SLinus Torvalds struct inquiry_entry *e; 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(bdaddr)); 4141da177e4SLinus Torvalds 415561aafbcSJohan Hedberg list_for_each_entry(e, &cache->all, all) { 4161da177e4SLinus Torvalds if (!bacmp(&e->data.bdaddr, bdaddr)) 4171da177e4SLinus Torvalds return e; 4181da177e4SLinus Torvalds } 4191da177e4SLinus Torvalds 420b57c1a56SJohan Hedberg return NULL; 421b57c1a56SJohan Hedberg } 422b57c1a56SJohan Hedberg 423561aafbcSJohan Hedberg struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 424561aafbcSJohan Hedberg bdaddr_t *bdaddr) 425561aafbcSJohan Hedberg { 42630883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 427561aafbcSJohan Hedberg struct inquiry_entry *e; 428561aafbcSJohan Hedberg 429561aafbcSJohan Hedberg BT_DBG("cache %p, %s", cache, batostr(bdaddr)); 430561aafbcSJohan Hedberg 431561aafbcSJohan Hedberg list_for_each_entry(e, &cache->unknown, list) { 432561aafbcSJohan Hedberg if (!bacmp(&e->data.bdaddr, bdaddr)) 433561aafbcSJohan Hedberg return e; 434561aafbcSJohan Hedberg } 435561aafbcSJohan Hedberg 436561aafbcSJohan Hedberg return NULL; 437561aafbcSJohan Hedberg } 438561aafbcSJohan Hedberg 43930dc78e1SJohan Hedberg struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 44030dc78e1SJohan Hedberg bdaddr_t *bdaddr, 44130dc78e1SJohan Hedberg int state) 44230dc78e1SJohan Hedberg { 44330dc78e1SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 44430dc78e1SJohan Hedberg struct inquiry_entry *e; 44530dc78e1SJohan Hedberg 44630dc78e1SJohan Hedberg BT_DBG("cache %p bdaddr %s state %d", cache, batostr(bdaddr), state); 44730dc78e1SJohan Hedberg 44830dc78e1SJohan Hedberg list_for_each_entry(e, &cache->resolve, list) { 44930dc78e1SJohan Hedberg if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) 45030dc78e1SJohan Hedberg return e; 45130dc78e1SJohan Hedberg if (!bacmp(&e->data.bdaddr, bdaddr)) 45230dc78e1SJohan Hedberg return e; 45330dc78e1SJohan Hedberg } 45430dc78e1SJohan Hedberg 45530dc78e1SJohan Hedberg return NULL; 45630dc78e1SJohan Hedberg } 45730dc78e1SJohan Hedberg 458a3d4e20aSJohan Hedberg void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 459a3d4e20aSJohan Hedberg struct inquiry_entry *ie) 460a3d4e20aSJohan Hedberg { 461a3d4e20aSJohan Hedberg struct discovery_state *cache = &hdev->discovery; 462a3d4e20aSJohan Hedberg struct list_head *pos = &cache->resolve; 463a3d4e20aSJohan Hedberg struct inquiry_entry *p; 464a3d4e20aSJohan Hedberg 465a3d4e20aSJohan Hedberg list_del(&ie->list); 466a3d4e20aSJohan Hedberg 467a3d4e20aSJohan Hedberg list_for_each_entry(p, &cache->resolve, list) { 468a3d4e20aSJohan Hedberg if (p->name_state != NAME_PENDING && 469a3d4e20aSJohan Hedberg abs(p->data.rssi) >= abs(ie->data.rssi)) 470a3d4e20aSJohan Hedberg break; 471a3d4e20aSJohan Hedberg pos = &p->list; 472a3d4e20aSJohan Hedberg } 473a3d4e20aSJohan Hedberg 474a3d4e20aSJohan Hedberg list_add(&ie->list, pos); 475a3d4e20aSJohan Hedberg } 476a3d4e20aSJohan Hedberg 4773175405bSJohan Hedberg bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 478388fc8faSJohan Hedberg bool name_known, bool *ssp) 4791da177e4SLinus Torvalds { 48030883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 48170f23020SAndrei Emeltchenko struct inquiry_entry *ie; 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds BT_DBG("cache %p, %s", cache, batostr(&data->bdaddr)); 4841da177e4SLinus Torvalds 485388fc8faSJohan Hedberg if (ssp) 486388fc8faSJohan Hedberg *ssp = data->ssp_mode; 487388fc8faSJohan Hedberg 48870f23020SAndrei Emeltchenko ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); 489a3d4e20aSJohan Hedberg if (ie) { 490388fc8faSJohan Hedberg if (ie->data.ssp_mode && ssp) 491388fc8faSJohan Hedberg *ssp = true; 492388fc8faSJohan Hedberg 493a3d4e20aSJohan Hedberg if (ie->name_state == NAME_NEEDED && 494a3d4e20aSJohan Hedberg data->rssi != ie->data.rssi) { 495a3d4e20aSJohan Hedberg ie->data.rssi = data->rssi; 496a3d4e20aSJohan Hedberg hci_inquiry_cache_update_resolve(hdev, ie); 497a3d4e20aSJohan Hedberg } 498a3d4e20aSJohan Hedberg 499561aafbcSJohan Hedberg goto update; 500a3d4e20aSJohan Hedberg } 501561aafbcSJohan Hedberg 5021da177e4SLinus Torvalds /* Entry not in the cache. Add new one. */ 50370f23020SAndrei Emeltchenko ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); 50470f23020SAndrei Emeltchenko if (!ie) 5053175405bSJohan Hedberg return false; 50670f23020SAndrei Emeltchenko 507561aafbcSJohan Hedberg list_add(&ie->all, &cache->all); 508561aafbcSJohan Hedberg 509561aafbcSJohan Hedberg if (name_known) { 510561aafbcSJohan Hedberg ie->name_state = NAME_KNOWN; 511561aafbcSJohan Hedberg } else { 512561aafbcSJohan Hedberg ie->name_state = NAME_NOT_KNOWN; 513561aafbcSJohan Hedberg list_add(&ie->list, &cache->unknown); 514561aafbcSJohan Hedberg } 515561aafbcSJohan Hedberg 516561aafbcSJohan Hedberg update: 517561aafbcSJohan Hedberg if (name_known && ie->name_state != NAME_KNOWN && 518561aafbcSJohan Hedberg ie->name_state != NAME_PENDING) { 519561aafbcSJohan Hedberg ie->name_state = NAME_KNOWN; 520561aafbcSJohan Hedberg list_del(&ie->list); 5211da177e4SLinus Torvalds } 5221da177e4SLinus Torvalds 52370f23020SAndrei Emeltchenko memcpy(&ie->data, data, sizeof(*data)); 52470f23020SAndrei Emeltchenko ie->timestamp = jiffies; 5251da177e4SLinus Torvalds cache->timestamp = jiffies; 5263175405bSJohan Hedberg 5273175405bSJohan Hedberg if (ie->name_state == NAME_NOT_KNOWN) 5283175405bSJohan Hedberg return false; 5293175405bSJohan Hedberg 5303175405bSJohan Hedberg return true; 5311da177e4SLinus Torvalds } 5321da177e4SLinus Torvalds 5331da177e4SLinus Torvalds static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) 5341da177e4SLinus Torvalds { 53530883512SJohan Hedberg struct discovery_state *cache = &hdev->discovery; 5361da177e4SLinus Torvalds struct inquiry_info *info = (struct inquiry_info *) buf; 5371da177e4SLinus Torvalds struct inquiry_entry *e; 5381da177e4SLinus Torvalds int copied = 0; 5391da177e4SLinus Torvalds 540561aafbcSJohan Hedberg list_for_each_entry(e, &cache->all, all) { 5411da177e4SLinus Torvalds struct inquiry_data *data = &e->data; 542b57c1a56SJohan Hedberg 543b57c1a56SJohan Hedberg if (copied >= num) 544b57c1a56SJohan Hedberg break; 545b57c1a56SJohan Hedberg 5461da177e4SLinus Torvalds bacpy(&info->bdaddr, &data->bdaddr); 5471da177e4SLinus Torvalds info->pscan_rep_mode = data->pscan_rep_mode; 5481da177e4SLinus Torvalds info->pscan_period_mode = data->pscan_period_mode; 5491da177e4SLinus Torvalds info->pscan_mode = data->pscan_mode; 5501da177e4SLinus Torvalds memcpy(info->dev_class, data->dev_class, 3); 5511da177e4SLinus Torvalds info->clock_offset = data->clock_offset; 552b57c1a56SJohan Hedberg 5531da177e4SLinus Torvalds info++; 554b57c1a56SJohan Hedberg copied++; 5551da177e4SLinus Torvalds } 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds BT_DBG("cache %p, copied %d", cache, copied); 5581da177e4SLinus Torvalds return copied; 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) 5621da177e4SLinus Torvalds { 5631da177e4SLinus Torvalds struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; 5641da177e4SLinus Torvalds struct hci_cp_inquiry cp; 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds if (test_bit(HCI_INQUIRY, &hdev->flags)) 5691da177e4SLinus Torvalds return; 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvalds /* Start Inquiry */ 5721da177e4SLinus Torvalds memcpy(&cp.lap, &ir->lap, 3); 5731da177e4SLinus Torvalds cp.length = ir->length; 5741da177e4SLinus Torvalds cp.num_rsp = ir->num_rsp; 575a9de9248SMarcel Holtmann hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); 5761da177e4SLinus Torvalds } 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds int hci_inquiry(void __user *arg) 5791da177e4SLinus Torvalds { 5801da177e4SLinus Torvalds __u8 __user *ptr = arg; 5811da177e4SLinus Torvalds struct hci_inquiry_req ir; 5821da177e4SLinus Torvalds struct hci_dev *hdev; 5831da177e4SLinus Torvalds int err = 0, do_inquiry = 0, max_rsp; 5841da177e4SLinus Torvalds long timeo; 5851da177e4SLinus Torvalds __u8 *buf; 5861da177e4SLinus Torvalds 5871da177e4SLinus Torvalds if (copy_from_user(&ir, ptr, sizeof(ir))) 5881da177e4SLinus Torvalds return -EFAULT; 5891da177e4SLinus Torvalds 5905a08ecceSAndrei Emeltchenko hdev = hci_dev_get(ir.dev_id); 5915a08ecceSAndrei Emeltchenko if (!hdev) 5921da177e4SLinus Torvalds return -ENODEV; 5931da177e4SLinus Torvalds 59409fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 5951da177e4SLinus Torvalds if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || 596a8c5fb1aSGustavo Padovan inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { 5971da177e4SLinus Torvalds inquiry_cache_flush(hdev); 5981da177e4SLinus Torvalds do_inquiry = 1; 5991da177e4SLinus Torvalds } 60009fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 6011da177e4SLinus Torvalds 60204837f64SMarcel Holtmann timeo = ir.length * msecs_to_jiffies(2000); 60370f23020SAndrei Emeltchenko 60470f23020SAndrei Emeltchenko if (do_inquiry) { 60570f23020SAndrei Emeltchenko err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); 60670f23020SAndrei Emeltchenko if (err < 0) 6071da177e4SLinus Torvalds goto done; 60870f23020SAndrei Emeltchenko } 6091da177e4SLinus Torvalds 6108fc9ced3SGustavo Padovan /* for unlimited number of responses we will use buffer with 6118fc9ced3SGustavo Padovan * 255 entries 6128fc9ced3SGustavo Padovan */ 6131da177e4SLinus Torvalds max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds /* cache_dump can't sleep. Therefore we allocate temp buffer and then 6161da177e4SLinus Torvalds * copy it to the user space. 6171da177e4SLinus Torvalds */ 61870f23020SAndrei Emeltchenko buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); 61970f23020SAndrei Emeltchenko if (!buf) { 6201da177e4SLinus Torvalds err = -ENOMEM; 6211da177e4SLinus Torvalds goto done; 6221da177e4SLinus Torvalds } 6231da177e4SLinus Torvalds 62409fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 6251da177e4SLinus Torvalds ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); 62609fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 6271da177e4SLinus Torvalds 6281da177e4SLinus Torvalds BT_DBG("num_rsp %d", ir.num_rsp); 6291da177e4SLinus Torvalds 6301da177e4SLinus Torvalds if (!copy_to_user(ptr, &ir, sizeof(ir))) { 6311da177e4SLinus Torvalds ptr += sizeof(ir); 6321da177e4SLinus Torvalds if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * 6331da177e4SLinus Torvalds ir.num_rsp)) 6341da177e4SLinus Torvalds err = -EFAULT; 6351da177e4SLinus Torvalds } else 6361da177e4SLinus Torvalds err = -EFAULT; 6371da177e4SLinus Torvalds 6381da177e4SLinus Torvalds kfree(buf); 6391da177e4SLinus Torvalds 6401da177e4SLinus Torvalds done: 6411da177e4SLinus Torvalds hci_dev_put(hdev); 6421da177e4SLinus Torvalds return err; 6431da177e4SLinus Torvalds } 6441da177e4SLinus Torvalds 6451da177e4SLinus Torvalds /* ---- HCI ioctl helpers ---- */ 6461da177e4SLinus Torvalds 6471da177e4SLinus Torvalds int hci_dev_open(__u16 dev) 6481da177e4SLinus Torvalds { 6491da177e4SLinus Torvalds struct hci_dev *hdev; 6501da177e4SLinus Torvalds int ret = 0; 6511da177e4SLinus Torvalds 6525a08ecceSAndrei Emeltchenko hdev = hci_dev_get(dev); 6535a08ecceSAndrei Emeltchenko if (!hdev) 6541da177e4SLinus Torvalds return -ENODEV; 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 6571da177e4SLinus Torvalds 6581da177e4SLinus Torvalds hci_req_lock(hdev); 6591da177e4SLinus Torvalds 66094324962SJohan Hovold if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { 66194324962SJohan Hovold ret = -ENODEV; 66294324962SJohan Hovold goto done; 66394324962SJohan Hovold } 66494324962SJohan Hovold 665611b30f7SMarcel Holtmann if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { 666611b30f7SMarcel Holtmann ret = -ERFKILL; 667611b30f7SMarcel Holtmann goto done; 668611b30f7SMarcel Holtmann } 669611b30f7SMarcel Holtmann 6701da177e4SLinus Torvalds if (test_bit(HCI_UP, &hdev->flags)) { 6711da177e4SLinus Torvalds ret = -EALREADY; 6721da177e4SLinus Torvalds goto done; 6731da177e4SLinus Torvalds } 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) 6761da177e4SLinus Torvalds set_bit(HCI_RAW, &hdev->flags); 6771da177e4SLinus Torvalds 67807e3b94aSAndrei Emeltchenko /* Treat all non BR/EDR controllers as raw devices if 67907e3b94aSAndrei Emeltchenko enable_hs is not set */ 68007e3b94aSAndrei Emeltchenko if (hdev->dev_type != HCI_BREDR && !enable_hs) 681943da25dSMarcel Holtmann set_bit(HCI_RAW, &hdev->flags); 682943da25dSMarcel Holtmann 6831da177e4SLinus Torvalds if (hdev->open(hdev)) { 6841da177e4SLinus Torvalds ret = -EIO; 6851da177e4SLinus Torvalds goto done; 6861da177e4SLinus Torvalds } 6871da177e4SLinus Torvalds 6881da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 6891da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 6901da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 691a5040efaSJohan Hedberg hdev->init_last_cmd = 0; 6921da177e4SLinus Torvalds 6935f246e89SAndrei Emeltchenko ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT); 6941da177e4SLinus Torvalds 695eead27daSAndre Guedes if (lmp_host_le_capable(hdev)) 6966ed58ec5SVille Tervo ret = __hci_request(hdev, hci_le_init_req, 0, 6975f246e89SAndrei Emeltchenko HCI_INIT_TIMEOUT); 6986ed58ec5SVille Tervo 6991da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 7001da177e4SLinus Torvalds } 7011da177e4SLinus Torvalds 7021da177e4SLinus Torvalds if (!ret) { 7031da177e4SLinus Torvalds hci_dev_hold(hdev); 7041da177e4SLinus Torvalds set_bit(HCI_UP, &hdev->flags); 7051da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UP); 706a8b2d5c2SJohan Hedberg if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { 70709fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 708744cf19eSJohan Hedberg mgmt_powered(hdev, 1); 70909fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 71056e5cb86SJohan Hedberg } 7111da177e4SLinus Torvalds } else { 7121da177e4SLinus Torvalds /* Init failed, cleanup */ 7133eff45eaSGustavo F. Padovan flush_work(&hdev->tx_work); 714c347b765SGustavo F. Padovan flush_work(&hdev->cmd_work); 715b78752ccSMarcel Holtmann flush_work(&hdev->rx_work); 7161da177e4SLinus Torvalds 7171da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 7181da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 7191da177e4SLinus Torvalds 7201da177e4SLinus Torvalds if (hdev->flush) 7211da177e4SLinus Torvalds hdev->flush(hdev); 7221da177e4SLinus Torvalds 7231da177e4SLinus Torvalds if (hdev->sent_cmd) { 7241da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 7251da177e4SLinus Torvalds hdev->sent_cmd = NULL; 7261da177e4SLinus Torvalds } 7271da177e4SLinus Torvalds 7281da177e4SLinus Torvalds hdev->close(hdev); 7291da177e4SLinus Torvalds hdev->flags = 0; 7301da177e4SLinus Torvalds } 7311da177e4SLinus Torvalds 7321da177e4SLinus Torvalds done: 7331da177e4SLinus Torvalds hci_req_unlock(hdev); 7341da177e4SLinus Torvalds hci_dev_put(hdev); 7351da177e4SLinus Torvalds return ret; 7361da177e4SLinus Torvalds } 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds static int hci_dev_do_close(struct hci_dev *hdev) 7391da177e4SLinus Torvalds { 7401da177e4SLinus Torvalds BT_DBG("%s %p", hdev->name, hdev); 7411da177e4SLinus Torvalds 74228b75a89SAndre Guedes cancel_work_sync(&hdev->le_scan); 74328b75a89SAndre Guedes 7441da177e4SLinus Torvalds hci_req_cancel(hdev, ENODEV); 7451da177e4SLinus Torvalds hci_req_lock(hdev); 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { 748b79f44c1SVinicius Costa Gomes del_timer_sync(&hdev->cmd_timer); 7491da177e4SLinus Torvalds hci_req_unlock(hdev); 7501da177e4SLinus Torvalds return 0; 7511da177e4SLinus Torvalds } 7521da177e4SLinus Torvalds 7533eff45eaSGustavo F. Padovan /* Flush RX and TX works */ 7543eff45eaSGustavo F. Padovan flush_work(&hdev->tx_work); 755b78752ccSMarcel Holtmann flush_work(&hdev->rx_work); 7561da177e4SLinus Torvalds 75716ab91abSJohan Hedberg if (hdev->discov_timeout > 0) { 758e0f9309fSJohan Hedberg cancel_delayed_work(&hdev->discov_off); 75916ab91abSJohan Hedberg hdev->discov_timeout = 0; 7605e5282bbSJohan Hedberg clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); 76116ab91abSJohan Hedberg } 76216ab91abSJohan Hedberg 763a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) 7647d78525dSJohan Hedberg cancel_delayed_work(&hdev->service_cache); 7657d78525dSJohan Hedberg 7667ba8b4beSAndre Guedes cancel_delayed_work_sync(&hdev->le_scan_disable); 7677ba8b4beSAndre Guedes 76809fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 7691da177e4SLinus Torvalds inquiry_cache_flush(hdev); 7701da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 77109fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 7721da177e4SLinus Torvalds 7731da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_DOWN); 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds if (hdev->flush) 7761da177e4SLinus Torvalds hdev->flush(hdev); 7771da177e4SLinus Torvalds 7781da177e4SLinus Torvalds /* Reset device */ 7791da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 7801da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 7818af59467SJohan Hedberg if (!test_bit(HCI_RAW, &hdev->flags) && 782a6c511c6SSzymon Janc test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { 7831da177e4SLinus Torvalds set_bit(HCI_INIT, &hdev->flags); 7845f246e89SAndrei Emeltchenko __hci_request(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); 7851da177e4SLinus Torvalds clear_bit(HCI_INIT, &hdev->flags); 7861da177e4SLinus Torvalds } 7871da177e4SLinus Torvalds 788c347b765SGustavo F. Padovan /* flush cmd work */ 789c347b765SGustavo F. Padovan flush_work(&hdev->cmd_work); 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds /* Drop queues */ 7921da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 7931da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 7941da177e4SLinus Torvalds skb_queue_purge(&hdev->raw_q); 7951da177e4SLinus Torvalds 7961da177e4SLinus Torvalds /* Drop last sent command */ 7971da177e4SLinus Torvalds if (hdev->sent_cmd) { 798b79f44c1SVinicius Costa Gomes del_timer_sync(&hdev->cmd_timer); 7991da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 8001da177e4SLinus Torvalds hdev->sent_cmd = NULL; 8011da177e4SLinus Torvalds } 8021da177e4SLinus Torvalds 8031da177e4SLinus Torvalds /* After this point our queues are empty 8041da177e4SLinus Torvalds * and no tasks are scheduled. */ 8051da177e4SLinus Torvalds hdev->close(hdev); 8061da177e4SLinus Torvalds 8078ee56540SMarcel Holtmann if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { 80809fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 809744cf19eSJohan Hedberg mgmt_powered(hdev, 0); 81009fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 8118ee56540SMarcel Holtmann } 8125add6af8SJohan Hedberg 8131da177e4SLinus Torvalds /* Clear flags */ 8141da177e4SLinus Torvalds hdev->flags = 0; 8151da177e4SLinus Torvalds 816e59fda8dSJohan Hedberg memset(hdev->eir, 0, sizeof(hdev->eir)); 81709b3c3fbSJohan Hedberg memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); 818e59fda8dSJohan Hedberg 8191da177e4SLinus Torvalds hci_req_unlock(hdev); 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds hci_dev_put(hdev); 8221da177e4SLinus Torvalds return 0; 8231da177e4SLinus Torvalds } 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds int hci_dev_close(__u16 dev) 8261da177e4SLinus Torvalds { 8271da177e4SLinus Torvalds struct hci_dev *hdev; 8281da177e4SLinus Torvalds int err; 8291da177e4SLinus Torvalds 83070f23020SAndrei Emeltchenko hdev = hci_dev_get(dev); 83170f23020SAndrei Emeltchenko if (!hdev) 8321da177e4SLinus Torvalds return -ENODEV; 8338ee56540SMarcel Holtmann 8348ee56540SMarcel Holtmann if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 8358ee56540SMarcel Holtmann cancel_delayed_work(&hdev->power_off); 8368ee56540SMarcel Holtmann 8371da177e4SLinus Torvalds err = hci_dev_do_close(hdev); 8388ee56540SMarcel Holtmann 8391da177e4SLinus Torvalds hci_dev_put(hdev); 8401da177e4SLinus Torvalds return err; 8411da177e4SLinus Torvalds } 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvalds int hci_dev_reset(__u16 dev) 8441da177e4SLinus Torvalds { 8451da177e4SLinus Torvalds struct hci_dev *hdev; 8461da177e4SLinus Torvalds int ret = 0; 8471da177e4SLinus Torvalds 84870f23020SAndrei Emeltchenko hdev = hci_dev_get(dev); 84970f23020SAndrei Emeltchenko if (!hdev) 8501da177e4SLinus Torvalds return -ENODEV; 8511da177e4SLinus Torvalds 8521da177e4SLinus Torvalds hci_req_lock(hdev); 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds if (!test_bit(HCI_UP, &hdev->flags)) 8551da177e4SLinus Torvalds goto done; 8561da177e4SLinus Torvalds 8571da177e4SLinus Torvalds /* Drop queues */ 8581da177e4SLinus Torvalds skb_queue_purge(&hdev->rx_q); 8591da177e4SLinus Torvalds skb_queue_purge(&hdev->cmd_q); 8601da177e4SLinus Torvalds 86109fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 8621da177e4SLinus Torvalds inquiry_cache_flush(hdev); 8631da177e4SLinus Torvalds hci_conn_hash_flush(hdev); 86409fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 8651da177e4SLinus Torvalds 8661da177e4SLinus Torvalds if (hdev->flush) 8671da177e4SLinus Torvalds hdev->flush(hdev); 8681da177e4SLinus Torvalds 8691da177e4SLinus Torvalds atomic_set(&hdev->cmd_cnt, 1); 8706ed58ec5SVille Tervo hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; 8711da177e4SLinus Torvalds 8721da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) 8735f246e89SAndrei Emeltchenko ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds done: 8761da177e4SLinus Torvalds hci_req_unlock(hdev); 8771da177e4SLinus Torvalds hci_dev_put(hdev); 8781da177e4SLinus Torvalds return ret; 8791da177e4SLinus Torvalds } 8801da177e4SLinus Torvalds 8811da177e4SLinus Torvalds int hci_dev_reset_stat(__u16 dev) 8821da177e4SLinus Torvalds { 8831da177e4SLinus Torvalds struct hci_dev *hdev; 8841da177e4SLinus Torvalds int ret = 0; 8851da177e4SLinus Torvalds 88670f23020SAndrei Emeltchenko hdev = hci_dev_get(dev); 88770f23020SAndrei Emeltchenko if (!hdev) 8881da177e4SLinus Torvalds return -ENODEV; 8891da177e4SLinus Torvalds 8901da177e4SLinus Torvalds memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); 8911da177e4SLinus Torvalds 8921da177e4SLinus Torvalds hci_dev_put(hdev); 8931da177e4SLinus Torvalds 8941da177e4SLinus Torvalds return ret; 8951da177e4SLinus Torvalds } 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvalds int hci_dev_cmd(unsigned int cmd, void __user *arg) 8981da177e4SLinus Torvalds { 8991da177e4SLinus Torvalds struct hci_dev *hdev; 9001da177e4SLinus Torvalds struct hci_dev_req dr; 9011da177e4SLinus Torvalds int err = 0; 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvalds if (copy_from_user(&dr, arg, sizeof(dr))) 9041da177e4SLinus Torvalds return -EFAULT; 9051da177e4SLinus Torvalds 90670f23020SAndrei Emeltchenko hdev = hci_dev_get(dr.dev_id); 90770f23020SAndrei Emeltchenko if (!hdev) 9081da177e4SLinus Torvalds return -ENODEV; 9091da177e4SLinus Torvalds 9101da177e4SLinus Torvalds switch (cmd) { 9111da177e4SLinus Torvalds case HCISETAUTH: 91204837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 9135f246e89SAndrei Emeltchenko HCI_INIT_TIMEOUT); 9141da177e4SLinus Torvalds break; 9151da177e4SLinus Torvalds 9161da177e4SLinus Torvalds case HCISETENCRYPT: 9171da177e4SLinus Torvalds if (!lmp_encrypt_capable(hdev)) { 9181da177e4SLinus Torvalds err = -EOPNOTSUPP; 9191da177e4SLinus Torvalds break; 9201da177e4SLinus Torvalds } 9211da177e4SLinus Torvalds 9221da177e4SLinus Torvalds if (!test_bit(HCI_AUTH, &hdev->flags)) { 9231da177e4SLinus Torvalds /* Auth must be enabled first */ 92404837f64SMarcel Holtmann err = hci_request(hdev, hci_auth_req, dr.dev_opt, 9255f246e89SAndrei Emeltchenko HCI_INIT_TIMEOUT); 9261da177e4SLinus Torvalds if (err) 9271da177e4SLinus Torvalds break; 9281da177e4SLinus Torvalds } 9291da177e4SLinus Torvalds 93004837f64SMarcel Holtmann err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, 9315f246e89SAndrei Emeltchenko HCI_INIT_TIMEOUT); 9321da177e4SLinus Torvalds break; 9331da177e4SLinus Torvalds 9341da177e4SLinus Torvalds case HCISETSCAN: 93504837f64SMarcel Holtmann err = hci_request(hdev, hci_scan_req, dr.dev_opt, 9365f246e89SAndrei Emeltchenko HCI_INIT_TIMEOUT); 9371da177e4SLinus Torvalds break; 9381da177e4SLinus Torvalds 9391da177e4SLinus Torvalds case HCISETLINKPOL: 940e4e8e37cSMarcel Holtmann err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, 9415f246e89SAndrei Emeltchenko HCI_INIT_TIMEOUT); 9421da177e4SLinus Torvalds break; 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds case HCISETLINKMODE: 945e4e8e37cSMarcel Holtmann hdev->link_mode = ((__u16) dr.dev_opt) & 946e4e8e37cSMarcel Holtmann (HCI_LM_MASTER | HCI_LM_ACCEPT); 947e4e8e37cSMarcel Holtmann break; 948e4e8e37cSMarcel Holtmann 949e4e8e37cSMarcel Holtmann case HCISETPTYPE: 950e4e8e37cSMarcel Holtmann hdev->pkt_type = (__u16) dr.dev_opt; 9511da177e4SLinus Torvalds break; 9521da177e4SLinus Torvalds 9531da177e4SLinus Torvalds case HCISETACLMTU: 9541da177e4SLinus Torvalds hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); 9551da177e4SLinus Torvalds hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); 9561da177e4SLinus Torvalds break; 9571da177e4SLinus Torvalds 9581da177e4SLinus Torvalds case HCISETSCOMTU: 9591da177e4SLinus Torvalds hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); 9601da177e4SLinus Torvalds hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); 9611da177e4SLinus Torvalds break; 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds default: 9641da177e4SLinus Torvalds err = -EINVAL; 9651da177e4SLinus Torvalds break; 9661da177e4SLinus Torvalds } 967e4e8e37cSMarcel Holtmann 9681da177e4SLinus Torvalds hci_dev_put(hdev); 9691da177e4SLinus Torvalds return err; 9701da177e4SLinus Torvalds } 9711da177e4SLinus Torvalds 9721da177e4SLinus Torvalds int hci_get_dev_list(void __user *arg) 9731da177e4SLinus Torvalds { 9748035ded4SLuiz Augusto von Dentz struct hci_dev *hdev; 9751da177e4SLinus Torvalds struct hci_dev_list_req *dl; 9761da177e4SLinus Torvalds struct hci_dev_req *dr; 9771da177e4SLinus Torvalds int n = 0, size, err; 9781da177e4SLinus Torvalds __u16 dev_num; 9791da177e4SLinus Torvalds 9801da177e4SLinus Torvalds if (get_user(dev_num, (__u16 __user *) arg)) 9811da177e4SLinus Torvalds return -EFAULT; 9821da177e4SLinus Torvalds 9831da177e4SLinus Torvalds if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) 9841da177e4SLinus Torvalds return -EINVAL; 9851da177e4SLinus Torvalds 9861da177e4SLinus Torvalds size = sizeof(*dl) + dev_num * sizeof(*dr); 9871da177e4SLinus Torvalds 98870f23020SAndrei Emeltchenko dl = kzalloc(size, GFP_KERNEL); 98970f23020SAndrei Emeltchenko if (!dl) 9901da177e4SLinus Torvalds return -ENOMEM; 9911da177e4SLinus Torvalds 9921da177e4SLinus Torvalds dr = dl->dev_req; 9931da177e4SLinus Torvalds 994f20d09d5SGustavo F. Padovan read_lock(&hci_dev_list_lock); 9958035ded4SLuiz Augusto von Dentz list_for_each_entry(hdev, &hci_dev_list, list) { 996a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 997e0f9309fSJohan Hedberg cancel_delayed_work(&hdev->power_off); 998c542a06cSJohan Hedberg 999a8b2d5c2SJohan Hedberg if (!test_bit(HCI_MGMT, &hdev->dev_flags)) 1000a8b2d5c2SJohan Hedberg set_bit(HCI_PAIRABLE, &hdev->dev_flags); 1001c542a06cSJohan Hedberg 10021da177e4SLinus Torvalds (dr + n)->dev_id = hdev->id; 10031da177e4SLinus Torvalds (dr + n)->dev_opt = hdev->flags; 1004c542a06cSJohan Hedberg 10051da177e4SLinus Torvalds if (++n >= dev_num) 10061da177e4SLinus Torvalds break; 10071da177e4SLinus Torvalds } 1008f20d09d5SGustavo F. Padovan read_unlock(&hci_dev_list_lock); 10091da177e4SLinus Torvalds 10101da177e4SLinus Torvalds dl->dev_num = n; 10111da177e4SLinus Torvalds size = sizeof(*dl) + n * sizeof(*dr); 10121da177e4SLinus Torvalds 10131da177e4SLinus Torvalds err = copy_to_user(arg, dl, size); 10141da177e4SLinus Torvalds kfree(dl); 10151da177e4SLinus Torvalds 10161da177e4SLinus Torvalds return err ? -EFAULT : 0; 10171da177e4SLinus Torvalds } 10181da177e4SLinus Torvalds 10191da177e4SLinus Torvalds int hci_get_dev_info(void __user *arg) 10201da177e4SLinus Torvalds { 10211da177e4SLinus Torvalds struct hci_dev *hdev; 10221da177e4SLinus Torvalds struct hci_dev_info di; 10231da177e4SLinus Torvalds int err = 0; 10241da177e4SLinus Torvalds 10251da177e4SLinus Torvalds if (copy_from_user(&di, arg, sizeof(di))) 10261da177e4SLinus Torvalds return -EFAULT; 10271da177e4SLinus Torvalds 102870f23020SAndrei Emeltchenko hdev = hci_dev_get(di.dev_id); 102970f23020SAndrei Emeltchenko if (!hdev) 10301da177e4SLinus Torvalds return -ENODEV; 10311da177e4SLinus Torvalds 1032a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 10333243553fSJohan Hedberg cancel_delayed_work_sync(&hdev->power_off); 1034ab81cbf9SJohan Hedberg 1035a8b2d5c2SJohan Hedberg if (!test_bit(HCI_MGMT, &hdev->dev_flags)) 1036a8b2d5c2SJohan Hedberg set_bit(HCI_PAIRABLE, &hdev->dev_flags); 1037c542a06cSJohan Hedberg 10381da177e4SLinus Torvalds strcpy(di.name, hdev->name); 10391da177e4SLinus Torvalds di.bdaddr = hdev->bdaddr; 1040943da25dSMarcel Holtmann di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4); 10411da177e4SLinus Torvalds di.flags = hdev->flags; 10421da177e4SLinus Torvalds di.pkt_type = hdev->pkt_type; 10431da177e4SLinus Torvalds di.acl_mtu = hdev->acl_mtu; 10441da177e4SLinus Torvalds di.acl_pkts = hdev->acl_pkts; 10451da177e4SLinus Torvalds di.sco_mtu = hdev->sco_mtu; 10461da177e4SLinus Torvalds di.sco_pkts = hdev->sco_pkts; 10471da177e4SLinus Torvalds di.link_policy = hdev->link_policy; 10481da177e4SLinus Torvalds di.link_mode = hdev->link_mode; 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); 10511da177e4SLinus Torvalds memcpy(&di.features, &hdev->features, sizeof(di.features)); 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds if (copy_to_user(arg, &di, sizeof(di))) 10541da177e4SLinus Torvalds err = -EFAULT; 10551da177e4SLinus Torvalds 10561da177e4SLinus Torvalds hci_dev_put(hdev); 10571da177e4SLinus Torvalds 10581da177e4SLinus Torvalds return err; 10591da177e4SLinus Torvalds } 10601da177e4SLinus Torvalds 10611da177e4SLinus Torvalds /* ---- Interface to HCI drivers ---- */ 10621da177e4SLinus Torvalds 1063611b30f7SMarcel Holtmann static int hci_rfkill_set_block(void *data, bool blocked) 1064611b30f7SMarcel Holtmann { 1065611b30f7SMarcel Holtmann struct hci_dev *hdev = data; 1066611b30f7SMarcel Holtmann 1067611b30f7SMarcel Holtmann BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); 1068611b30f7SMarcel Holtmann 1069611b30f7SMarcel Holtmann if (!blocked) 1070611b30f7SMarcel Holtmann return 0; 1071611b30f7SMarcel Holtmann 1072611b30f7SMarcel Holtmann hci_dev_do_close(hdev); 1073611b30f7SMarcel Holtmann 1074611b30f7SMarcel Holtmann return 0; 1075611b30f7SMarcel Holtmann } 1076611b30f7SMarcel Holtmann 1077611b30f7SMarcel Holtmann static const struct rfkill_ops hci_rfkill_ops = { 1078611b30f7SMarcel Holtmann .set_block = hci_rfkill_set_block, 1079611b30f7SMarcel Holtmann }; 1080611b30f7SMarcel Holtmann 1081ab81cbf9SJohan Hedberg static void hci_power_on(struct work_struct *work) 1082ab81cbf9SJohan Hedberg { 1083ab81cbf9SJohan Hedberg struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); 1084ab81cbf9SJohan Hedberg 1085ab81cbf9SJohan Hedberg BT_DBG("%s", hdev->name); 1086ab81cbf9SJohan Hedberg 1087ab81cbf9SJohan Hedberg if (hci_dev_open(hdev->id) < 0) 1088ab81cbf9SJohan Hedberg return; 1089ab81cbf9SJohan Hedberg 1090a8b2d5c2SJohan Hedberg if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) 109180b7ab33SGustavo F. Padovan schedule_delayed_work(&hdev->power_off, 10923243553fSJohan Hedberg msecs_to_jiffies(AUTO_OFF_TIMEOUT)); 1093ab81cbf9SJohan Hedberg 1094a8b2d5c2SJohan Hedberg if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) 1095744cf19eSJohan Hedberg mgmt_index_added(hdev); 1096ab81cbf9SJohan Hedberg } 1097ab81cbf9SJohan Hedberg 1098ab81cbf9SJohan Hedberg static void hci_power_off(struct work_struct *work) 1099ab81cbf9SJohan Hedberg { 11003243553fSJohan Hedberg struct hci_dev *hdev = container_of(work, struct hci_dev, 11013243553fSJohan Hedberg power_off.work); 1102ab81cbf9SJohan Hedberg 1103ab81cbf9SJohan Hedberg BT_DBG("%s", hdev->name); 1104ab81cbf9SJohan Hedberg 11058ee56540SMarcel Holtmann hci_dev_do_close(hdev); 1106ab81cbf9SJohan Hedberg } 1107ab81cbf9SJohan Hedberg 110816ab91abSJohan Hedberg static void hci_discov_off(struct work_struct *work) 110916ab91abSJohan Hedberg { 111016ab91abSJohan Hedberg struct hci_dev *hdev; 111116ab91abSJohan Hedberg u8 scan = SCAN_PAGE; 111216ab91abSJohan Hedberg 111316ab91abSJohan Hedberg hdev = container_of(work, struct hci_dev, discov_off.work); 111416ab91abSJohan Hedberg 111516ab91abSJohan Hedberg BT_DBG("%s", hdev->name); 111616ab91abSJohan Hedberg 111709fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 111816ab91abSJohan Hedberg 111916ab91abSJohan Hedberg hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); 112016ab91abSJohan Hedberg 112116ab91abSJohan Hedberg hdev->discov_timeout = 0; 112216ab91abSJohan Hedberg 112309fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 112416ab91abSJohan Hedberg } 112516ab91abSJohan Hedberg 11262aeb9a1aSJohan Hedberg int hci_uuids_clear(struct hci_dev *hdev) 11272aeb9a1aSJohan Hedberg { 11282aeb9a1aSJohan Hedberg struct list_head *p, *n; 11292aeb9a1aSJohan Hedberg 11302aeb9a1aSJohan Hedberg list_for_each_safe(p, n, &hdev->uuids) { 11312aeb9a1aSJohan Hedberg struct bt_uuid *uuid; 11322aeb9a1aSJohan Hedberg 11332aeb9a1aSJohan Hedberg uuid = list_entry(p, struct bt_uuid, list); 11342aeb9a1aSJohan Hedberg 11352aeb9a1aSJohan Hedberg list_del(p); 11362aeb9a1aSJohan Hedberg kfree(uuid); 11372aeb9a1aSJohan Hedberg } 11382aeb9a1aSJohan Hedberg 11392aeb9a1aSJohan Hedberg return 0; 11402aeb9a1aSJohan Hedberg } 11412aeb9a1aSJohan Hedberg 114255ed8ca1SJohan Hedberg int hci_link_keys_clear(struct hci_dev *hdev) 114355ed8ca1SJohan Hedberg { 114455ed8ca1SJohan Hedberg struct list_head *p, *n; 114555ed8ca1SJohan Hedberg 114655ed8ca1SJohan Hedberg list_for_each_safe(p, n, &hdev->link_keys) { 114755ed8ca1SJohan Hedberg struct link_key *key; 114855ed8ca1SJohan Hedberg 114955ed8ca1SJohan Hedberg key = list_entry(p, struct link_key, list); 115055ed8ca1SJohan Hedberg 115155ed8ca1SJohan Hedberg list_del(p); 115255ed8ca1SJohan Hedberg kfree(key); 115355ed8ca1SJohan Hedberg } 115455ed8ca1SJohan Hedberg 115555ed8ca1SJohan Hedberg return 0; 115655ed8ca1SJohan Hedberg } 115755ed8ca1SJohan Hedberg 1158b899efafSVinicius Costa Gomes int hci_smp_ltks_clear(struct hci_dev *hdev) 1159b899efafSVinicius Costa Gomes { 1160b899efafSVinicius Costa Gomes struct smp_ltk *k, *tmp; 1161b899efafSVinicius Costa Gomes 1162b899efafSVinicius Costa Gomes list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { 1163b899efafSVinicius Costa Gomes list_del(&k->list); 1164b899efafSVinicius Costa Gomes kfree(k); 1165b899efafSVinicius Costa Gomes } 1166b899efafSVinicius Costa Gomes 1167b899efafSVinicius Costa Gomes return 0; 1168b899efafSVinicius Costa Gomes } 1169b899efafSVinicius Costa Gomes 117055ed8ca1SJohan Hedberg struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) 117155ed8ca1SJohan Hedberg { 117255ed8ca1SJohan Hedberg struct link_key *k; 117355ed8ca1SJohan Hedberg 11748035ded4SLuiz Augusto von Dentz list_for_each_entry(k, &hdev->link_keys, list) 117555ed8ca1SJohan Hedberg if (bacmp(bdaddr, &k->bdaddr) == 0) 117655ed8ca1SJohan Hedberg return k; 117755ed8ca1SJohan Hedberg 117855ed8ca1SJohan Hedberg return NULL; 117955ed8ca1SJohan Hedberg } 118055ed8ca1SJohan Hedberg 1181745c0ce3SVishal Agarwal static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, 1182d25e28abSJohan Hedberg u8 key_type, u8 old_key_type) 1183d25e28abSJohan Hedberg { 1184d25e28abSJohan Hedberg /* Legacy key */ 1185d25e28abSJohan Hedberg if (key_type < 0x03) 1186745c0ce3SVishal Agarwal return true; 1187d25e28abSJohan Hedberg 1188d25e28abSJohan Hedberg /* Debug keys are insecure so don't store them persistently */ 1189d25e28abSJohan Hedberg if (key_type == HCI_LK_DEBUG_COMBINATION) 1190745c0ce3SVishal Agarwal return false; 1191d25e28abSJohan Hedberg 1192d25e28abSJohan Hedberg /* Changed combination key and there's no previous one */ 1193d25e28abSJohan Hedberg if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) 1194745c0ce3SVishal Agarwal return false; 1195d25e28abSJohan Hedberg 1196d25e28abSJohan Hedberg /* Security mode 3 case */ 1197d25e28abSJohan Hedberg if (!conn) 1198745c0ce3SVishal Agarwal return true; 1199d25e28abSJohan Hedberg 1200d25e28abSJohan Hedberg /* Neither local nor remote side had no-bonding as requirement */ 1201d25e28abSJohan Hedberg if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) 1202745c0ce3SVishal Agarwal return true; 1203d25e28abSJohan Hedberg 1204d25e28abSJohan Hedberg /* Local side had dedicated bonding as requirement */ 1205d25e28abSJohan Hedberg if (conn->auth_type == 0x02 || conn->auth_type == 0x03) 1206745c0ce3SVishal Agarwal return true; 1207d25e28abSJohan Hedberg 1208d25e28abSJohan Hedberg /* Remote side had dedicated bonding as requirement */ 1209d25e28abSJohan Hedberg if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) 1210745c0ce3SVishal Agarwal return true; 1211d25e28abSJohan Hedberg 1212d25e28abSJohan Hedberg /* If none of the above criteria match, then don't store the key 1213d25e28abSJohan Hedberg * persistently */ 1214745c0ce3SVishal Agarwal return false; 1215d25e28abSJohan Hedberg } 1216d25e28abSJohan Hedberg 1217c9839a11SVinicius Costa Gomes struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) 121875d262c2SVinicius Costa Gomes { 1219c9839a11SVinicius Costa Gomes struct smp_ltk *k; 122075d262c2SVinicius Costa Gomes 1221c9839a11SVinicius Costa Gomes list_for_each_entry(k, &hdev->long_term_keys, list) { 1222c9839a11SVinicius Costa Gomes if (k->ediv != ediv || 1223c9839a11SVinicius Costa Gomes memcmp(rand, k->rand, sizeof(k->rand))) 122475d262c2SVinicius Costa Gomes continue; 122575d262c2SVinicius Costa Gomes 122675d262c2SVinicius Costa Gomes return k; 122775d262c2SVinicius Costa Gomes } 122875d262c2SVinicius Costa Gomes 122975d262c2SVinicius Costa Gomes return NULL; 123075d262c2SVinicius Costa Gomes } 123175d262c2SVinicius Costa Gomes 1232c9839a11SVinicius Costa Gomes struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1233c9839a11SVinicius Costa Gomes u8 addr_type) 123475d262c2SVinicius Costa Gomes { 1235c9839a11SVinicius Costa Gomes struct smp_ltk *k; 123675d262c2SVinicius Costa Gomes 1237c9839a11SVinicius Costa Gomes list_for_each_entry(k, &hdev->long_term_keys, list) 1238c9839a11SVinicius Costa Gomes if (addr_type == k->bdaddr_type && 1239c9839a11SVinicius Costa Gomes bacmp(bdaddr, &k->bdaddr) == 0) 124075d262c2SVinicius Costa Gomes return k; 124175d262c2SVinicius Costa Gomes 124275d262c2SVinicius Costa Gomes return NULL; 124375d262c2SVinicius Costa Gomes } 124475d262c2SVinicius Costa Gomes 1245d25e28abSJohan Hedberg int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, 1246d25e28abSJohan Hedberg bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) 124755ed8ca1SJohan Hedberg { 124855ed8ca1SJohan Hedberg struct link_key *key, *old_key; 1249745c0ce3SVishal Agarwal u8 old_key_type; 1250745c0ce3SVishal Agarwal bool persistent; 125155ed8ca1SJohan Hedberg 125255ed8ca1SJohan Hedberg old_key = hci_find_link_key(hdev, bdaddr); 125355ed8ca1SJohan Hedberg if (old_key) { 125455ed8ca1SJohan Hedberg old_key_type = old_key->type; 125555ed8ca1SJohan Hedberg key = old_key; 125655ed8ca1SJohan Hedberg } else { 125712adcf3aSJohan Hedberg old_key_type = conn ? conn->key_type : 0xff; 125855ed8ca1SJohan Hedberg key = kzalloc(sizeof(*key), GFP_ATOMIC); 125955ed8ca1SJohan Hedberg if (!key) 126055ed8ca1SJohan Hedberg return -ENOMEM; 126155ed8ca1SJohan Hedberg list_add(&key->list, &hdev->link_keys); 126255ed8ca1SJohan Hedberg } 126355ed8ca1SJohan Hedberg 126455ed8ca1SJohan Hedberg BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type); 126555ed8ca1SJohan Hedberg 1266d25e28abSJohan Hedberg /* Some buggy controller combinations generate a changed 1267d25e28abSJohan Hedberg * combination key for legacy pairing even when there's no 1268d25e28abSJohan Hedberg * previous key */ 1269d25e28abSJohan Hedberg if (type == HCI_LK_CHANGED_COMBINATION && 1270a8c5fb1aSGustavo Padovan (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { 1271d25e28abSJohan Hedberg type = HCI_LK_COMBINATION; 1272655fe6ecSJohan Hedberg if (conn) 1273655fe6ecSJohan Hedberg conn->key_type = type; 1274655fe6ecSJohan Hedberg } 1275d25e28abSJohan Hedberg 127655ed8ca1SJohan Hedberg bacpy(&key->bdaddr, bdaddr); 12779b3b4460SAndrei Emeltchenko memcpy(key->val, val, HCI_LINK_KEY_SIZE); 127855ed8ca1SJohan Hedberg key->pin_len = pin_len; 127955ed8ca1SJohan Hedberg 1280b6020ba0SWaldemar Rymarkiewicz if (type == HCI_LK_CHANGED_COMBINATION) 128155ed8ca1SJohan Hedberg key->type = old_key_type; 12824748fed2SJohan Hedberg else 12834748fed2SJohan Hedberg key->type = type; 12844748fed2SJohan Hedberg 12854df378a1SJohan Hedberg if (!new_key) 12864df378a1SJohan Hedberg return 0; 12874df378a1SJohan Hedberg 12884df378a1SJohan Hedberg persistent = hci_persistent_key(hdev, conn, type, old_key_type); 12894df378a1SJohan Hedberg 1290744cf19eSJohan Hedberg mgmt_new_link_key(hdev, key, persistent); 12914df378a1SJohan Hedberg 12926ec5bcadSVishal Agarwal if (conn) 12936ec5bcadSVishal Agarwal conn->flush_key = !persistent; 129455ed8ca1SJohan Hedberg 129555ed8ca1SJohan Hedberg return 0; 129655ed8ca1SJohan Hedberg } 129755ed8ca1SJohan Hedberg 1298c9839a11SVinicius Costa Gomes int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, 12999a006657SAndrei Emeltchenko int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 130004124681SGustavo F. Padovan ediv, u8 rand[8]) 130175d262c2SVinicius Costa Gomes { 1302c9839a11SVinicius Costa Gomes struct smp_ltk *key, *old_key; 130375d262c2SVinicius Costa Gomes 1304c9839a11SVinicius Costa Gomes if (!(type & HCI_SMP_STK) && !(type & HCI_SMP_LTK)) 1305c9839a11SVinicius Costa Gomes return 0; 130675d262c2SVinicius Costa Gomes 1307c9839a11SVinicius Costa Gomes old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type); 1308c9839a11SVinicius Costa Gomes if (old_key) 130975d262c2SVinicius Costa Gomes key = old_key; 1310c9839a11SVinicius Costa Gomes else { 1311c9839a11SVinicius Costa Gomes key = kzalloc(sizeof(*key), GFP_ATOMIC); 131275d262c2SVinicius Costa Gomes if (!key) 131375d262c2SVinicius Costa Gomes return -ENOMEM; 1314c9839a11SVinicius Costa Gomes list_add(&key->list, &hdev->long_term_keys); 131575d262c2SVinicius Costa Gomes } 131675d262c2SVinicius Costa Gomes 131775d262c2SVinicius Costa Gomes bacpy(&key->bdaddr, bdaddr); 1318c9839a11SVinicius Costa Gomes key->bdaddr_type = addr_type; 1319c9839a11SVinicius Costa Gomes memcpy(key->val, tk, sizeof(key->val)); 1320c9839a11SVinicius Costa Gomes key->authenticated = authenticated; 1321c9839a11SVinicius Costa Gomes key->ediv = ediv; 1322c9839a11SVinicius Costa Gomes key->enc_size = enc_size; 1323c9839a11SVinicius Costa Gomes key->type = type; 1324c9839a11SVinicius Costa Gomes memcpy(key->rand, rand, sizeof(key->rand)); 132575d262c2SVinicius Costa Gomes 1326c9839a11SVinicius Costa Gomes if (!new_key) 1327c9839a11SVinicius Costa Gomes return 0; 132875d262c2SVinicius Costa Gomes 1329261cc5aaSVinicius Costa Gomes if (type & HCI_SMP_LTK) 1330261cc5aaSVinicius Costa Gomes mgmt_new_ltk(hdev, key, 1); 1331261cc5aaSVinicius Costa Gomes 133275d262c2SVinicius Costa Gomes return 0; 133375d262c2SVinicius Costa Gomes } 133475d262c2SVinicius Costa Gomes 133555ed8ca1SJohan Hedberg int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) 133655ed8ca1SJohan Hedberg { 133755ed8ca1SJohan Hedberg struct link_key *key; 133855ed8ca1SJohan Hedberg 133955ed8ca1SJohan Hedberg key = hci_find_link_key(hdev, bdaddr); 134055ed8ca1SJohan Hedberg if (!key) 134155ed8ca1SJohan Hedberg return -ENOENT; 134255ed8ca1SJohan Hedberg 134355ed8ca1SJohan Hedberg BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); 134455ed8ca1SJohan Hedberg 134555ed8ca1SJohan Hedberg list_del(&key->list); 134655ed8ca1SJohan Hedberg kfree(key); 134755ed8ca1SJohan Hedberg 134855ed8ca1SJohan Hedberg return 0; 134955ed8ca1SJohan Hedberg } 135055ed8ca1SJohan Hedberg 1351b899efafSVinicius Costa Gomes int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr) 1352b899efafSVinicius Costa Gomes { 1353b899efafSVinicius Costa Gomes struct smp_ltk *k, *tmp; 1354b899efafSVinicius Costa Gomes 1355b899efafSVinicius Costa Gomes list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { 1356b899efafSVinicius Costa Gomes if (bacmp(bdaddr, &k->bdaddr)) 1357b899efafSVinicius Costa Gomes continue; 1358b899efafSVinicius Costa Gomes 1359b899efafSVinicius Costa Gomes BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); 1360b899efafSVinicius Costa Gomes 1361b899efafSVinicius Costa Gomes list_del(&k->list); 1362b899efafSVinicius Costa Gomes kfree(k); 1363b899efafSVinicius Costa Gomes } 1364b899efafSVinicius Costa Gomes 1365b899efafSVinicius Costa Gomes return 0; 1366b899efafSVinicius Costa Gomes } 1367b899efafSVinicius Costa Gomes 13686bd32326SVille Tervo /* HCI command timer function */ 1369bda4f23aSAndrei Emeltchenko static void hci_cmd_timeout(unsigned long arg) 13706bd32326SVille Tervo { 13716bd32326SVille Tervo struct hci_dev *hdev = (void *) arg; 13726bd32326SVille Tervo 1373bda4f23aSAndrei Emeltchenko if (hdev->sent_cmd) { 1374bda4f23aSAndrei Emeltchenko struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; 1375bda4f23aSAndrei Emeltchenko u16 opcode = __le16_to_cpu(sent->opcode); 1376bda4f23aSAndrei Emeltchenko 1377bda4f23aSAndrei Emeltchenko BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); 1378bda4f23aSAndrei Emeltchenko } else { 13796bd32326SVille Tervo BT_ERR("%s command tx timeout", hdev->name); 1380bda4f23aSAndrei Emeltchenko } 1381bda4f23aSAndrei Emeltchenko 13826bd32326SVille Tervo atomic_set(&hdev->cmd_cnt, 1); 1383c347b765SGustavo F. Padovan queue_work(hdev->workqueue, &hdev->cmd_work); 13846bd32326SVille Tervo } 13856bd32326SVille Tervo 13862763eda6SSzymon Janc struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 13872763eda6SSzymon Janc bdaddr_t *bdaddr) 13882763eda6SSzymon Janc { 13892763eda6SSzymon Janc struct oob_data *data; 13902763eda6SSzymon Janc 13912763eda6SSzymon Janc list_for_each_entry(data, &hdev->remote_oob_data, list) 13922763eda6SSzymon Janc if (bacmp(bdaddr, &data->bdaddr) == 0) 13932763eda6SSzymon Janc return data; 13942763eda6SSzymon Janc 13952763eda6SSzymon Janc return NULL; 13962763eda6SSzymon Janc } 13972763eda6SSzymon Janc 13982763eda6SSzymon Janc int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) 13992763eda6SSzymon Janc { 14002763eda6SSzymon Janc struct oob_data *data; 14012763eda6SSzymon Janc 14022763eda6SSzymon Janc data = hci_find_remote_oob_data(hdev, bdaddr); 14032763eda6SSzymon Janc if (!data) 14042763eda6SSzymon Janc return -ENOENT; 14052763eda6SSzymon Janc 14062763eda6SSzymon Janc BT_DBG("%s removing %s", hdev->name, batostr(bdaddr)); 14072763eda6SSzymon Janc 14082763eda6SSzymon Janc list_del(&data->list); 14092763eda6SSzymon Janc kfree(data); 14102763eda6SSzymon Janc 14112763eda6SSzymon Janc return 0; 14122763eda6SSzymon Janc } 14132763eda6SSzymon Janc 14142763eda6SSzymon Janc int hci_remote_oob_data_clear(struct hci_dev *hdev) 14152763eda6SSzymon Janc { 14162763eda6SSzymon Janc struct oob_data *data, *n; 14172763eda6SSzymon Janc 14182763eda6SSzymon Janc list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { 14192763eda6SSzymon Janc list_del(&data->list); 14202763eda6SSzymon Janc kfree(data); 14212763eda6SSzymon Janc } 14222763eda6SSzymon Janc 14232763eda6SSzymon Janc return 0; 14242763eda6SSzymon Janc } 14252763eda6SSzymon Janc 14262763eda6SSzymon Janc int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, 14272763eda6SSzymon Janc u8 *randomizer) 14282763eda6SSzymon Janc { 14292763eda6SSzymon Janc struct oob_data *data; 14302763eda6SSzymon Janc 14312763eda6SSzymon Janc data = hci_find_remote_oob_data(hdev, bdaddr); 14322763eda6SSzymon Janc 14332763eda6SSzymon Janc if (!data) { 14342763eda6SSzymon Janc data = kmalloc(sizeof(*data), GFP_ATOMIC); 14352763eda6SSzymon Janc if (!data) 14362763eda6SSzymon Janc return -ENOMEM; 14372763eda6SSzymon Janc 14382763eda6SSzymon Janc bacpy(&data->bdaddr, bdaddr); 14392763eda6SSzymon Janc list_add(&data->list, &hdev->remote_oob_data); 14402763eda6SSzymon Janc } 14412763eda6SSzymon Janc 14422763eda6SSzymon Janc memcpy(data->hash, hash, sizeof(data->hash)); 14432763eda6SSzymon Janc memcpy(data->randomizer, randomizer, sizeof(data->randomizer)); 14442763eda6SSzymon Janc 14452763eda6SSzymon Janc BT_DBG("%s for %s", hdev->name, batostr(bdaddr)); 14462763eda6SSzymon Janc 14472763eda6SSzymon Janc return 0; 14482763eda6SSzymon Janc } 14492763eda6SSzymon Janc 145004124681SGustavo F. Padovan struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr) 1451b2a66aadSAntti Julku { 1452b2a66aadSAntti Julku struct bdaddr_list *b; 1453b2a66aadSAntti Julku 14548035ded4SLuiz Augusto von Dentz list_for_each_entry(b, &hdev->blacklist, list) 1455b2a66aadSAntti Julku if (bacmp(bdaddr, &b->bdaddr) == 0) 1456b2a66aadSAntti Julku return b; 1457b2a66aadSAntti Julku 1458b2a66aadSAntti Julku return NULL; 1459b2a66aadSAntti Julku } 1460b2a66aadSAntti Julku 1461b2a66aadSAntti Julku int hci_blacklist_clear(struct hci_dev *hdev) 1462b2a66aadSAntti Julku { 1463b2a66aadSAntti Julku struct list_head *p, *n; 1464b2a66aadSAntti Julku 1465b2a66aadSAntti Julku list_for_each_safe(p, n, &hdev->blacklist) { 1466b2a66aadSAntti Julku struct bdaddr_list *b; 1467b2a66aadSAntti Julku 1468b2a66aadSAntti Julku b = list_entry(p, struct bdaddr_list, list); 1469b2a66aadSAntti Julku 1470b2a66aadSAntti Julku list_del(p); 1471b2a66aadSAntti Julku kfree(b); 1472b2a66aadSAntti Julku } 1473b2a66aadSAntti Julku 1474b2a66aadSAntti Julku return 0; 1475b2a66aadSAntti Julku } 1476b2a66aadSAntti Julku 147788c1fe4bSJohan Hedberg int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) 1478b2a66aadSAntti Julku { 1479b2a66aadSAntti Julku struct bdaddr_list *entry; 1480b2a66aadSAntti Julku 1481b2a66aadSAntti Julku if (bacmp(bdaddr, BDADDR_ANY) == 0) 1482b2a66aadSAntti Julku return -EBADF; 1483b2a66aadSAntti Julku 14845e762444SAntti Julku if (hci_blacklist_lookup(hdev, bdaddr)) 14855e762444SAntti Julku return -EEXIST; 1486b2a66aadSAntti Julku 1487b2a66aadSAntti Julku entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); 14885e762444SAntti Julku if (!entry) 14895e762444SAntti Julku return -ENOMEM; 1490b2a66aadSAntti Julku 1491b2a66aadSAntti Julku bacpy(&entry->bdaddr, bdaddr); 1492b2a66aadSAntti Julku 1493b2a66aadSAntti Julku list_add(&entry->list, &hdev->blacklist); 1494b2a66aadSAntti Julku 149588c1fe4bSJohan Hedberg return mgmt_device_blocked(hdev, bdaddr, type); 1496b2a66aadSAntti Julku } 1497b2a66aadSAntti Julku 149888c1fe4bSJohan Hedberg int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) 1499b2a66aadSAntti Julku { 1500b2a66aadSAntti Julku struct bdaddr_list *entry; 1501b2a66aadSAntti Julku 15021ec918ceSSzymon Janc if (bacmp(bdaddr, BDADDR_ANY) == 0) 15035e762444SAntti Julku return hci_blacklist_clear(hdev); 1504b2a66aadSAntti Julku 1505b2a66aadSAntti Julku entry = hci_blacklist_lookup(hdev, bdaddr); 15061ec918ceSSzymon Janc if (!entry) 15075e762444SAntti Julku return -ENOENT; 1508b2a66aadSAntti Julku 1509b2a66aadSAntti Julku list_del(&entry->list); 1510b2a66aadSAntti Julku kfree(entry); 1511b2a66aadSAntti Julku 151288c1fe4bSJohan Hedberg return mgmt_device_unblocked(hdev, bdaddr, type); 1513b2a66aadSAntti Julku } 1514b2a66aadSAntti Julku 15157ba8b4beSAndre Guedes static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) 15167ba8b4beSAndre Guedes { 15177ba8b4beSAndre Guedes struct le_scan_params *param = (struct le_scan_params *) opt; 15187ba8b4beSAndre Guedes struct hci_cp_le_set_scan_param cp; 15197ba8b4beSAndre Guedes 15207ba8b4beSAndre Guedes memset(&cp, 0, sizeof(cp)); 15217ba8b4beSAndre Guedes cp.type = param->type; 15227ba8b4beSAndre Guedes cp.interval = cpu_to_le16(param->interval); 15237ba8b4beSAndre Guedes cp.window = cpu_to_le16(param->window); 15247ba8b4beSAndre Guedes 15257ba8b4beSAndre Guedes hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); 15267ba8b4beSAndre Guedes } 15277ba8b4beSAndre Guedes 15287ba8b4beSAndre Guedes static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) 15297ba8b4beSAndre Guedes { 15307ba8b4beSAndre Guedes struct hci_cp_le_set_scan_enable cp; 15317ba8b4beSAndre Guedes 15327ba8b4beSAndre Guedes memset(&cp, 0, sizeof(cp)); 15337ba8b4beSAndre Guedes cp.enable = 1; 15340431a43cSAndre Guedes cp.filter_dup = 1; 15357ba8b4beSAndre Guedes 15367ba8b4beSAndre Guedes hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); 15377ba8b4beSAndre Guedes } 15387ba8b4beSAndre Guedes 15397ba8b4beSAndre Guedes static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, 15407ba8b4beSAndre Guedes u16 window, int timeout) 15417ba8b4beSAndre Guedes { 15427ba8b4beSAndre Guedes long timeo = msecs_to_jiffies(3000); 15437ba8b4beSAndre Guedes struct le_scan_params param; 15447ba8b4beSAndre Guedes int err; 15457ba8b4beSAndre Guedes 15467ba8b4beSAndre Guedes BT_DBG("%s", hdev->name); 15477ba8b4beSAndre Guedes 15487ba8b4beSAndre Guedes if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) 15497ba8b4beSAndre Guedes return -EINPROGRESS; 15507ba8b4beSAndre Guedes 15517ba8b4beSAndre Guedes param.type = type; 15527ba8b4beSAndre Guedes param.interval = interval; 15537ba8b4beSAndre Guedes param.window = window; 15547ba8b4beSAndre Guedes 15557ba8b4beSAndre Guedes hci_req_lock(hdev); 15567ba8b4beSAndre Guedes 15577ba8b4beSAndre Guedes err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, 15587ba8b4beSAndre Guedes timeo); 15597ba8b4beSAndre Guedes if (!err) 15607ba8b4beSAndre Guedes err = __hci_request(hdev, le_scan_enable_req, 0, timeo); 15617ba8b4beSAndre Guedes 15627ba8b4beSAndre Guedes hci_req_unlock(hdev); 15637ba8b4beSAndre Guedes 15647ba8b4beSAndre Guedes if (err < 0) 15657ba8b4beSAndre Guedes return err; 15667ba8b4beSAndre Guedes 15677ba8b4beSAndre Guedes schedule_delayed_work(&hdev->le_scan_disable, 15687ba8b4beSAndre Guedes msecs_to_jiffies(timeout)); 15697ba8b4beSAndre Guedes 15707ba8b4beSAndre Guedes return 0; 15717ba8b4beSAndre Guedes } 15727ba8b4beSAndre Guedes 15737dbfac1dSAndre Guedes int hci_cancel_le_scan(struct hci_dev *hdev) 15747dbfac1dSAndre Guedes { 15757dbfac1dSAndre Guedes BT_DBG("%s", hdev->name); 15767dbfac1dSAndre Guedes 15777dbfac1dSAndre Guedes if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags)) 15787dbfac1dSAndre Guedes return -EALREADY; 15797dbfac1dSAndre Guedes 15807dbfac1dSAndre Guedes if (cancel_delayed_work(&hdev->le_scan_disable)) { 15817dbfac1dSAndre Guedes struct hci_cp_le_set_scan_enable cp; 15827dbfac1dSAndre Guedes 15837dbfac1dSAndre Guedes /* Send HCI command to disable LE Scan */ 15847dbfac1dSAndre Guedes memset(&cp, 0, sizeof(cp)); 15857dbfac1dSAndre Guedes hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); 15867dbfac1dSAndre Guedes } 15877dbfac1dSAndre Guedes 15887dbfac1dSAndre Guedes return 0; 15897dbfac1dSAndre Guedes } 15907dbfac1dSAndre Guedes 15917ba8b4beSAndre Guedes static void le_scan_disable_work(struct work_struct *work) 15927ba8b4beSAndre Guedes { 15937ba8b4beSAndre Guedes struct hci_dev *hdev = container_of(work, struct hci_dev, 15947ba8b4beSAndre Guedes le_scan_disable.work); 15957ba8b4beSAndre Guedes struct hci_cp_le_set_scan_enable cp; 15967ba8b4beSAndre Guedes 15977ba8b4beSAndre Guedes BT_DBG("%s", hdev->name); 15987ba8b4beSAndre Guedes 15997ba8b4beSAndre Guedes memset(&cp, 0, sizeof(cp)); 16007ba8b4beSAndre Guedes 16017ba8b4beSAndre Guedes hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); 16027ba8b4beSAndre Guedes } 16037ba8b4beSAndre Guedes 160428b75a89SAndre Guedes static void le_scan_work(struct work_struct *work) 160528b75a89SAndre Guedes { 160628b75a89SAndre Guedes struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan); 160728b75a89SAndre Guedes struct le_scan_params *param = &hdev->le_scan_params; 160828b75a89SAndre Guedes 160928b75a89SAndre Guedes BT_DBG("%s", hdev->name); 161028b75a89SAndre Guedes 161104124681SGustavo F. Padovan hci_do_le_scan(hdev, param->type, param->interval, param->window, 161204124681SGustavo F. Padovan param->timeout); 161328b75a89SAndre Guedes } 161428b75a89SAndre Guedes 161528b75a89SAndre Guedes int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window, 161628b75a89SAndre Guedes int timeout) 161728b75a89SAndre Guedes { 161828b75a89SAndre Guedes struct le_scan_params *param = &hdev->le_scan_params; 161928b75a89SAndre Guedes 162028b75a89SAndre Guedes BT_DBG("%s", hdev->name); 162128b75a89SAndre Guedes 162228b75a89SAndre Guedes if (work_busy(&hdev->le_scan)) 162328b75a89SAndre Guedes return -EINPROGRESS; 162428b75a89SAndre Guedes 162528b75a89SAndre Guedes param->type = type; 162628b75a89SAndre Guedes param->interval = interval; 162728b75a89SAndre Guedes param->window = window; 162828b75a89SAndre Guedes param->timeout = timeout; 162928b75a89SAndre Guedes 163028b75a89SAndre Guedes queue_work(system_long_wq, &hdev->le_scan); 163128b75a89SAndre Guedes 163228b75a89SAndre Guedes return 0; 163328b75a89SAndre Guedes } 163428b75a89SAndre Guedes 16359be0dab7SDavid Herrmann /* Alloc HCI device */ 16369be0dab7SDavid Herrmann struct hci_dev *hci_alloc_dev(void) 16379be0dab7SDavid Herrmann { 16389be0dab7SDavid Herrmann struct hci_dev *hdev; 16399be0dab7SDavid Herrmann 16409be0dab7SDavid Herrmann hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); 16419be0dab7SDavid Herrmann if (!hdev) 16429be0dab7SDavid Herrmann return NULL; 16439be0dab7SDavid Herrmann 1644b1b813d4SDavid Herrmann hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); 1645b1b813d4SDavid Herrmann hdev->esco_type = (ESCO_HV1); 1646b1b813d4SDavid Herrmann hdev->link_mode = (HCI_LM_ACCEPT); 1647b1b813d4SDavid Herrmann hdev->io_capability = 0x03; /* No Input No Output */ 1648b1b813d4SDavid Herrmann 1649b1b813d4SDavid Herrmann hdev->sniff_max_interval = 800; 1650b1b813d4SDavid Herrmann hdev->sniff_min_interval = 80; 1651b1b813d4SDavid Herrmann 1652b1b813d4SDavid Herrmann mutex_init(&hdev->lock); 1653b1b813d4SDavid Herrmann mutex_init(&hdev->req_lock); 1654b1b813d4SDavid Herrmann 1655b1b813d4SDavid Herrmann INIT_LIST_HEAD(&hdev->mgmt_pending); 1656b1b813d4SDavid Herrmann INIT_LIST_HEAD(&hdev->blacklist); 1657b1b813d4SDavid Herrmann INIT_LIST_HEAD(&hdev->uuids); 1658b1b813d4SDavid Herrmann INIT_LIST_HEAD(&hdev->link_keys); 1659b1b813d4SDavid Herrmann INIT_LIST_HEAD(&hdev->long_term_keys); 1660b1b813d4SDavid Herrmann INIT_LIST_HEAD(&hdev->remote_oob_data); 1661b1b813d4SDavid Herrmann 1662b1b813d4SDavid Herrmann INIT_WORK(&hdev->rx_work, hci_rx_work); 1663b1b813d4SDavid Herrmann INIT_WORK(&hdev->cmd_work, hci_cmd_work); 1664b1b813d4SDavid Herrmann INIT_WORK(&hdev->tx_work, hci_tx_work); 1665b1b813d4SDavid Herrmann INIT_WORK(&hdev->power_on, hci_power_on); 1666b1b813d4SDavid Herrmann INIT_WORK(&hdev->le_scan, le_scan_work); 1667b1b813d4SDavid Herrmann 1668b1b813d4SDavid Herrmann INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); 1669b1b813d4SDavid Herrmann INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); 1670b1b813d4SDavid Herrmann INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); 1671b1b813d4SDavid Herrmann 16729be0dab7SDavid Herrmann skb_queue_head_init(&hdev->driver_init); 1673b1b813d4SDavid Herrmann skb_queue_head_init(&hdev->rx_q); 1674b1b813d4SDavid Herrmann skb_queue_head_init(&hdev->cmd_q); 1675b1b813d4SDavid Herrmann skb_queue_head_init(&hdev->raw_q); 1676b1b813d4SDavid Herrmann 1677b1b813d4SDavid Herrmann init_waitqueue_head(&hdev->req_wait_q); 1678b1b813d4SDavid Herrmann 1679bda4f23aSAndrei Emeltchenko setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); 1680b1b813d4SDavid Herrmann 1681b1b813d4SDavid Herrmann hci_init_sysfs(hdev); 1682b1b813d4SDavid Herrmann discovery_init(hdev); 1683b1b813d4SDavid Herrmann hci_conn_hash_init(hdev); 16849be0dab7SDavid Herrmann 16859be0dab7SDavid Herrmann return hdev; 16869be0dab7SDavid Herrmann } 16879be0dab7SDavid Herrmann EXPORT_SYMBOL(hci_alloc_dev); 16889be0dab7SDavid Herrmann 16899be0dab7SDavid Herrmann /* Free HCI device */ 16909be0dab7SDavid Herrmann void hci_free_dev(struct hci_dev *hdev) 16919be0dab7SDavid Herrmann { 16929be0dab7SDavid Herrmann skb_queue_purge(&hdev->driver_init); 16939be0dab7SDavid Herrmann 16949be0dab7SDavid Herrmann /* will free via device release */ 16959be0dab7SDavid Herrmann put_device(&hdev->dev); 16969be0dab7SDavid Herrmann } 16979be0dab7SDavid Herrmann EXPORT_SYMBOL(hci_free_dev); 16989be0dab7SDavid Herrmann 16991da177e4SLinus Torvalds /* Register HCI device */ 17001da177e4SLinus Torvalds int hci_register_dev(struct hci_dev *hdev) 17011da177e4SLinus Torvalds { 1702b1b813d4SDavid Herrmann int id, error; 17031da177e4SLinus Torvalds 1704010666a1SDavid Herrmann if (!hdev->open || !hdev->close) 17051da177e4SLinus Torvalds return -EINVAL; 17061da177e4SLinus Torvalds 170708add513SMat Martineau /* Do not allow HCI_AMP devices to register at index 0, 170808add513SMat Martineau * so the index can be used as the AMP controller ID. 170908add513SMat Martineau */ 17103df92b31SSasha Levin switch (hdev->dev_type) { 17113df92b31SSasha Levin case HCI_BREDR: 17123df92b31SSasha Levin id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); 17131da177e4SLinus Torvalds break; 17143df92b31SSasha Levin case HCI_AMP: 17153df92b31SSasha Levin id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); 17163df92b31SSasha Levin break; 17173df92b31SSasha Levin default: 17183df92b31SSasha Levin return -EINVAL; 17191da177e4SLinus Torvalds } 17201da177e4SLinus Torvalds 17213df92b31SSasha Levin if (id < 0) 17223df92b31SSasha Levin return id; 17233df92b31SSasha Levin 17241da177e4SLinus Torvalds sprintf(hdev->name, "hci%d", id); 17251da177e4SLinus Torvalds hdev->id = id; 17262d8b3a11SAndrei Emeltchenko 17272d8b3a11SAndrei Emeltchenko BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); 17282d8b3a11SAndrei Emeltchenko 17293df92b31SSasha Levin write_lock(&hci_dev_list_lock); 17303df92b31SSasha Levin list_add(&hdev->list, &hci_dev_list); 1731f20d09d5SGustavo F. Padovan write_unlock(&hci_dev_list_lock); 17321da177e4SLinus Torvalds 173332845eb1SGustavo F. Padovan hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND | 173432845eb1SGustavo F. Padovan WQ_MEM_RECLAIM, 1); 173533ca954dSDavid Herrmann if (!hdev->workqueue) { 173633ca954dSDavid Herrmann error = -ENOMEM; 173733ca954dSDavid Herrmann goto err; 173833ca954dSDavid Herrmann } 1739f48fd9c8SMarcel Holtmann 174033ca954dSDavid Herrmann error = hci_add_sysfs(hdev); 174133ca954dSDavid Herrmann if (error < 0) 174233ca954dSDavid Herrmann goto err_wqueue; 17431da177e4SLinus Torvalds 1744611b30f7SMarcel Holtmann hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, 1745a8c5fb1aSGustavo Padovan RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, 1746a8c5fb1aSGustavo Padovan hdev); 1747611b30f7SMarcel Holtmann if (hdev->rfkill) { 1748611b30f7SMarcel Holtmann if (rfkill_register(hdev->rfkill) < 0) { 1749611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 1750611b30f7SMarcel Holtmann hdev->rfkill = NULL; 1751611b30f7SMarcel Holtmann } 1752611b30f7SMarcel Holtmann } 1753611b30f7SMarcel Holtmann 1754a8b2d5c2SJohan Hedberg set_bit(HCI_AUTO_OFF, &hdev->dev_flags); 1755a8b2d5c2SJohan Hedberg set_bit(HCI_SETUP, &hdev->dev_flags); 17567f971041SGustavo F. Padovan schedule_work(&hdev->power_on); 1757ab81cbf9SJohan Hedberg 17581da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_REG); 1759dc946bd8SDavid Herrmann hci_dev_hold(hdev); 17601da177e4SLinus Torvalds 17611da177e4SLinus Torvalds return id; 1762f48fd9c8SMarcel Holtmann 176333ca954dSDavid Herrmann err_wqueue: 176433ca954dSDavid Herrmann destroy_workqueue(hdev->workqueue); 176533ca954dSDavid Herrmann err: 17663df92b31SSasha Levin ida_simple_remove(&hci_index_ida, hdev->id); 1767f20d09d5SGustavo F. Padovan write_lock(&hci_dev_list_lock); 1768f48fd9c8SMarcel Holtmann list_del(&hdev->list); 1769f20d09d5SGustavo F. Padovan write_unlock(&hci_dev_list_lock); 1770f48fd9c8SMarcel Holtmann 177133ca954dSDavid Herrmann return error; 17721da177e4SLinus Torvalds } 17731da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_dev); 17741da177e4SLinus Torvalds 17751da177e4SLinus Torvalds /* Unregister HCI device */ 177659735631SDavid Herrmann void hci_unregister_dev(struct hci_dev *hdev) 17771da177e4SLinus Torvalds { 17783df92b31SSasha Levin int i, id; 1779ef222013SMarcel Holtmann 1780c13854ceSMarcel Holtmann BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); 17811da177e4SLinus Torvalds 178294324962SJohan Hovold set_bit(HCI_UNREGISTER, &hdev->dev_flags); 178394324962SJohan Hovold 17843df92b31SSasha Levin id = hdev->id; 17853df92b31SSasha Levin 1786f20d09d5SGustavo F. Padovan write_lock(&hci_dev_list_lock); 17871da177e4SLinus Torvalds list_del(&hdev->list); 1788f20d09d5SGustavo F. Padovan write_unlock(&hci_dev_list_lock); 17891da177e4SLinus Torvalds 17901da177e4SLinus Torvalds hci_dev_do_close(hdev); 17911da177e4SLinus Torvalds 1792cd4c5391SSuraj Sumangala for (i = 0; i < NUM_REASSEMBLY; i++) 1793ef222013SMarcel Holtmann kfree_skb(hdev->reassembly[i]); 1794ef222013SMarcel Holtmann 1795ab81cbf9SJohan Hedberg if (!test_bit(HCI_INIT, &hdev->flags) && 1796a8b2d5c2SJohan Hedberg !test_bit(HCI_SETUP, &hdev->dev_flags)) { 179709fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 1798744cf19eSJohan Hedberg mgmt_index_removed(hdev); 179909fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 180056e5cb86SJohan Hedberg } 1801ab81cbf9SJohan Hedberg 18022e58ef3eSJohan Hedberg /* mgmt_index_removed should take care of emptying the 18032e58ef3eSJohan Hedberg * pending list */ 18042e58ef3eSJohan Hedberg BUG_ON(!list_empty(&hdev->mgmt_pending)); 18052e58ef3eSJohan Hedberg 18061da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_UNREG); 18071da177e4SLinus Torvalds 1808611b30f7SMarcel Holtmann if (hdev->rfkill) { 1809611b30f7SMarcel Holtmann rfkill_unregister(hdev->rfkill); 1810611b30f7SMarcel Holtmann rfkill_destroy(hdev->rfkill); 1811611b30f7SMarcel Holtmann } 1812611b30f7SMarcel Holtmann 1813ce242970SDavid Herrmann hci_del_sysfs(hdev); 1814147e2d59SDave Young 1815f48fd9c8SMarcel Holtmann destroy_workqueue(hdev->workqueue); 1816f48fd9c8SMarcel Holtmann 181709fd0de5SGustavo F. Padovan hci_dev_lock(hdev); 1818e2e0cacbSJohan Hedberg hci_blacklist_clear(hdev); 18192aeb9a1aSJohan Hedberg hci_uuids_clear(hdev); 182055ed8ca1SJohan Hedberg hci_link_keys_clear(hdev); 1821b899efafSVinicius Costa Gomes hci_smp_ltks_clear(hdev); 18222763eda6SSzymon Janc hci_remote_oob_data_clear(hdev); 182309fd0de5SGustavo F. Padovan hci_dev_unlock(hdev); 1824e2e0cacbSJohan Hedberg 1825dc946bd8SDavid Herrmann hci_dev_put(hdev); 18263df92b31SSasha Levin 18273df92b31SSasha Levin ida_simple_remove(&hci_index_ida, id); 18281da177e4SLinus Torvalds } 18291da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_dev); 18301da177e4SLinus Torvalds 18311da177e4SLinus Torvalds /* Suspend HCI device */ 18321da177e4SLinus Torvalds int hci_suspend_dev(struct hci_dev *hdev) 18331da177e4SLinus Torvalds { 18341da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_SUSPEND); 18351da177e4SLinus Torvalds return 0; 18361da177e4SLinus Torvalds } 18371da177e4SLinus Torvalds EXPORT_SYMBOL(hci_suspend_dev); 18381da177e4SLinus Torvalds 18391da177e4SLinus Torvalds /* Resume HCI device */ 18401da177e4SLinus Torvalds int hci_resume_dev(struct hci_dev *hdev) 18411da177e4SLinus Torvalds { 18421da177e4SLinus Torvalds hci_notify(hdev, HCI_DEV_RESUME); 18431da177e4SLinus Torvalds return 0; 18441da177e4SLinus Torvalds } 18451da177e4SLinus Torvalds EXPORT_SYMBOL(hci_resume_dev); 18461da177e4SLinus Torvalds 184776bca880SMarcel Holtmann /* Receive frame from HCI drivers */ 184876bca880SMarcel Holtmann int hci_recv_frame(struct sk_buff *skb) 184976bca880SMarcel Holtmann { 185076bca880SMarcel Holtmann struct hci_dev *hdev = (struct hci_dev *) skb->dev; 185176bca880SMarcel Holtmann if (!hdev || (!test_bit(HCI_UP, &hdev->flags) 185276bca880SMarcel Holtmann && !test_bit(HCI_INIT, &hdev->flags))) { 185376bca880SMarcel Holtmann kfree_skb(skb); 185476bca880SMarcel Holtmann return -ENXIO; 185576bca880SMarcel Holtmann } 185676bca880SMarcel Holtmann 185776bca880SMarcel Holtmann /* Incomming skb */ 185876bca880SMarcel Holtmann bt_cb(skb)->incoming = 1; 185976bca880SMarcel Holtmann 186076bca880SMarcel Holtmann /* Time stamp */ 186176bca880SMarcel Holtmann __net_timestamp(skb); 186276bca880SMarcel Holtmann 186376bca880SMarcel Holtmann skb_queue_tail(&hdev->rx_q, skb); 1864b78752ccSMarcel Holtmann queue_work(hdev->workqueue, &hdev->rx_work); 1865c78ae283SMarcel Holtmann 186676bca880SMarcel Holtmann return 0; 186776bca880SMarcel Holtmann } 186876bca880SMarcel Holtmann EXPORT_SYMBOL(hci_recv_frame); 186976bca880SMarcel Holtmann 187033e882a5SSuraj Sumangala static int hci_reassembly(struct hci_dev *hdev, int type, void *data, 18711e429f38SGustavo F. Padovan int count, __u8 index) 187233e882a5SSuraj Sumangala { 187333e882a5SSuraj Sumangala int len = 0; 187433e882a5SSuraj Sumangala int hlen = 0; 187533e882a5SSuraj Sumangala int remain = count; 187633e882a5SSuraj Sumangala struct sk_buff *skb; 187733e882a5SSuraj Sumangala struct bt_skb_cb *scb; 187833e882a5SSuraj Sumangala 187933e882a5SSuraj Sumangala if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || 188033e882a5SSuraj Sumangala index >= NUM_REASSEMBLY) 188133e882a5SSuraj Sumangala return -EILSEQ; 188233e882a5SSuraj Sumangala 188333e882a5SSuraj Sumangala skb = hdev->reassembly[index]; 188433e882a5SSuraj Sumangala 188533e882a5SSuraj Sumangala if (!skb) { 188633e882a5SSuraj Sumangala switch (type) { 188733e882a5SSuraj Sumangala case HCI_ACLDATA_PKT: 188833e882a5SSuraj Sumangala len = HCI_MAX_FRAME_SIZE; 188933e882a5SSuraj Sumangala hlen = HCI_ACL_HDR_SIZE; 189033e882a5SSuraj Sumangala break; 189133e882a5SSuraj Sumangala case HCI_EVENT_PKT: 189233e882a5SSuraj Sumangala len = HCI_MAX_EVENT_SIZE; 189333e882a5SSuraj Sumangala hlen = HCI_EVENT_HDR_SIZE; 189433e882a5SSuraj Sumangala break; 189533e882a5SSuraj Sumangala case HCI_SCODATA_PKT: 189633e882a5SSuraj Sumangala len = HCI_MAX_SCO_SIZE; 189733e882a5SSuraj Sumangala hlen = HCI_SCO_HDR_SIZE; 189833e882a5SSuraj Sumangala break; 189933e882a5SSuraj Sumangala } 190033e882a5SSuraj Sumangala 19011e429f38SGustavo F. Padovan skb = bt_skb_alloc(len, GFP_ATOMIC); 190233e882a5SSuraj Sumangala if (!skb) 190333e882a5SSuraj Sumangala return -ENOMEM; 190433e882a5SSuraj Sumangala 190533e882a5SSuraj Sumangala scb = (void *) skb->cb; 190633e882a5SSuraj Sumangala scb->expect = hlen; 190733e882a5SSuraj Sumangala scb->pkt_type = type; 190833e882a5SSuraj Sumangala 190933e882a5SSuraj Sumangala skb->dev = (void *) hdev; 191033e882a5SSuraj Sumangala hdev->reassembly[index] = skb; 191133e882a5SSuraj Sumangala } 191233e882a5SSuraj Sumangala 191333e882a5SSuraj Sumangala while (count) { 191433e882a5SSuraj Sumangala scb = (void *) skb->cb; 191589bb46d0SDan Carpenter len = min_t(uint, scb->expect, count); 191633e882a5SSuraj Sumangala 191733e882a5SSuraj Sumangala memcpy(skb_put(skb, len), data, len); 191833e882a5SSuraj Sumangala 191933e882a5SSuraj Sumangala count -= len; 192033e882a5SSuraj Sumangala data += len; 192133e882a5SSuraj Sumangala scb->expect -= len; 192233e882a5SSuraj Sumangala remain = count; 192333e882a5SSuraj Sumangala 192433e882a5SSuraj Sumangala switch (type) { 192533e882a5SSuraj Sumangala case HCI_EVENT_PKT: 192633e882a5SSuraj Sumangala if (skb->len == HCI_EVENT_HDR_SIZE) { 192733e882a5SSuraj Sumangala struct hci_event_hdr *h = hci_event_hdr(skb); 192833e882a5SSuraj Sumangala scb->expect = h->plen; 192933e882a5SSuraj Sumangala 193033e882a5SSuraj Sumangala if (skb_tailroom(skb) < scb->expect) { 193133e882a5SSuraj Sumangala kfree_skb(skb); 193233e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 193333e882a5SSuraj Sumangala return -ENOMEM; 193433e882a5SSuraj Sumangala } 193533e882a5SSuraj Sumangala } 193633e882a5SSuraj Sumangala break; 193733e882a5SSuraj Sumangala 193833e882a5SSuraj Sumangala case HCI_ACLDATA_PKT: 193933e882a5SSuraj Sumangala if (skb->len == HCI_ACL_HDR_SIZE) { 194033e882a5SSuraj Sumangala struct hci_acl_hdr *h = hci_acl_hdr(skb); 194133e882a5SSuraj Sumangala scb->expect = __le16_to_cpu(h->dlen); 194233e882a5SSuraj Sumangala 194333e882a5SSuraj Sumangala if (skb_tailroom(skb) < scb->expect) { 194433e882a5SSuraj Sumangala kfree_skb(skb); 194533e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 194633e882a5SSuraj Sumangala return -ENOMEM; 194733e882a5SSuraj Sumangala } 194833e882a5SSuraj Sumangala } 194933e882a5SSuraj Sumangala break; 195033e882a5SSuraj Sumangala 195133e882a5SSuraj Sumangala case HCI_SCODATA_PKT: 195233e882a5SSuraj Sumangala if (skb->len == HCI_SCO_HDR_SIZE) { 195333e882a5SSuraj Sumangala struct hci_sco_hdr *h = hci_sco_hdr(skb); 195433e882a5SSuraj Sumangala scb->expect = h->dlen; 195533e882a5SSuraj Sumangala 195633e882a5SSuraj Sumangala if (skb_tailroom(skb) < scb->expect) { 195733e882a5SSuraj Sumangala kfree_skb(skb); 195833e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 195933e882a5SSuraj Sumangala return -ENOMEM; 196033e882a5SSuraj Sumangala } 196133e882a5SSuraj Sumangala } 196233e882a5SSuraj Sumangala break; 196333e882a5SSuraj Sumangala } 196433e882a5SSuraj Sumangala 196533e882a5SSuraj Sumangala if (scb->expect == 0) { 196633e882a5SSuraj Sumangala /* Complete frame */ 196733e882a5SSuraj Sumangala 196833e882a5SSuraj Sumangala bt_cb(skb)->pkt_type = type; 196933e882a5SSuraj Sumangala hci_recv_frame(skb); 197033e882a5SSuraj Sumangala 197133e882a5SSuraj Sumangala hdev->reassembly[index] = NULL; 197233e882a5SSuraj Sumangala return remain; 197333e882a5SSuraj Sumangala } 197433e882a5SSuraj Sumangala } 197533e882a5SSuraj Sumangala 197633e882a5SSuraj Sumangala return remain; 197733e882a5SSuraj Sumangala } 197833e882a5SSuraj Sumangala 1979ef222013SMarcel Holtmann int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) 1980ef222013SMarcel Holtmann { 1981f39a3c06SSuraj Sumangala int rem = 0; 1982f39a3c06SSuraj Sumangala 1983ef222013SMarcel Holtmann if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) 1984ef222013SMarcel Holtmann return -EILSEQ; 1985ef222013SMarcel Holtmann 1986da5f6c37SGustavo F. Padovan while (count) { 19871e429f38SGustavo F. Padovan rem = hci_reassembly(hdev, type, data, count, type - 1); 1988f39a3c06SSuraj Sumangala if (rem < 0) 1989f39a3c06SSuraj Sumangala return rem; 1990ef222013SMarcel Holtmann 1991f39a3c06SSuraj Sumangala data += (count - rem); 1992f39a3c06SSuraj Sumangala count = rem; 1993f81c6224SJoe Perches } 1994ef222013SMarcel Holtmann 1995f39a3c06SSuraj Sumangala return rem; 1996ef222013SMarcel Holtmann } 1997ef222013SMarcel Holtmann EXPORT_SYMBOL(hci_recv_fragment); 1998ef222013SMarcel Holtmann 199999811510SSuraj Sumangala #define STREAM_REASSEMBLY 0 200099811510SSuraj Sumangala 200199811510SSuraj Sumangala int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) 200299811510SSuraj Sumangala { 200399811510SSuraj Sumangala int type; 200499811510SSuraj Sumangala int rem = 0; 200599811510SSuraj Sumangala 2006da5f6c37SGustavo F. Padovan while (count) { 200799811510SSuraj Sumangala struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; 200899811510SSuraj Sumangala 200999811510SSuraj Sumangala if (!skb) { 201099811510SSuraj Sumangala struct { char type; } *pkt; 201199811510SSuraj Sumangala 201299811510SSuraj Sumangala /* Start of the frame */ 201399811510SSuraj Sumangala pkt = data; 201499811510SSuraj Sumangala type = pkt->type; 201599811510SSuraj Sumangala 201699811510SSuraj Sumangala data++; 201799811510SSuraj Sumangala count--; 201899811510SSuraj Sumangala } else 201999811510SSuraj Sumangala type = bt_cb(skb)->pkt_type; 202099811510SSuraj Sumangala 20211e429f38SGustavo F. Padovan rem = hci_reassembly(hdev, type, data, count, 20221e429f38SGustavo F. Padovan STREAM_REASSEMBLY); 202399811510SSuraj Sumangala if (rem < 0) 202499811510SSuraj Sumangala return rem; 202599811510SSuraj Sumangala 202699811510SSuraj Sumangala data += (count - rem); 202799811510SSuraj Sumangala count = rem; 2028f81c6224SJoe Perches } 202999811510SSuraj Sumangala 203099811510SSuraj Sumangala return rem; 203199811510SSuraj Sumangala } 203299811510SSuraj Sumangala EXPORT_SYMBOL(hci_recv_stream_fragment); 203399811510SSuraj Sumangala 20341da177e4SLinus Torvalds /* ---- Interface to upper protocols ---- */ 20351da177e4SLinus Torvalds 20361da177e4SLinus Torvalds int hci_register_cb(struct hci_cb *cb) 20371da177e4SLinus Torvalds { 20381da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 20391da177e4SLinus Torvalds 2040f20d09d5SGustavo F. Padovan write_lock(&hci_cb_list_lock); 20411da177e4SLinus Torvalds list_add(&cb->list, &hci_cb_list); 2042f20d09d5SGustavo F. Padovan write_unlock(&hci_cb_list_lock); 20431da177e4SLinus Torvalds 20441da177e4SLinus Torvalds return 0; 20451da177e4SLinus Torvalds } 20461da177e4SLinus Torvalds EXPORT_SYMBOL(hci_register_cb); 20471da177e4SLinus Torvalds 20481da177e4SLinus Torvalds int hci_unregister_cb(struct hci_cb *cb) 20491da177e4SLinus Torvalds { 20501da177e4SLinus Torvalds BT_DBG("%p name %s", cb, cb->name); 20511da177e4SLinus Torvalds 2052f20d09d5SGustavo F. Padovan write_lock(&hci_cb_list_lock); 20531da177e4SLinus Torvalds list_del(&cb->list); 2054f20d09d5SGustavo F. Padovan write_unlock(&hci_cb_list_lock); 20551da177e4SLinus Torvalds 20561da177e4SLinus Torvalds return 0; 20571da177e4SLinus Torvalds } 20581da177e4SLinus Torvalds EXPORT_SYMBOL(hci_unregister_cb); 20591da177e4SLinus Torvalds 20601da177e4SLinus Torvalds static int hci_send_frame(struct sk_buff *skb) 20611da177e4SLinus Torvalds { 20621da177e4SLinus Torvalds struct hci_dev *hdev = (struct hci_dev *) skb->dev; 20631da177e4SLinus Torvalds 20641da177e4SLinus Torvalds if (!hdev) { 20651da177e4SLinus Torvalds kfree_skb(skb); 20661da177e4SLinus Torvalds return -ENODEV; 20671da177e4SLinus Torvalds } 20681da177e4SLinus Torvalds 20690d48d939SMarcel Holtmann BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); 20701da177e4SLinus Torvalds 20711da177e4SLinus Torvalds /* Time stamp */ 2072a61bbcf2SPatrick McHardy __net_timestamp(skb); 20731da177e4SLinus Torvalds 2074cd82e61cSMarcel Holtmann /* Send copy to monitor */ 2075cd82e61cSMarcel Holtmann hci_send_to_monitor(hdev, skb); 2076cd82e61cSMarcel Holtmann 2077cd82e61cSMarcel Holtmann if (atomic_read(&hdev->promisc)) { 2078cd82e61cSMarcel Holtmann /* Send copy to the sockets */ 2079470fe1b5SMarcel Holtmann hci_send_to_sock(hdev, skb); 20801da177e4SLinus Torvalds } 20811da177e4SLinus Torvalds 20821da177e4SLinus Torvalds /* Get rid of skb owner, prior to sending to the driver. */ 20831da177e4SLinus Torvalds skb_orphan(skb); 20841da177e4SLinus Torvalds 20851da177e4SLinus Torvalds return hdev->send(skb); 20861da177e4SLinus Torvalds } 20871da177e4SLinus Torvalds 20881da177e4SLinus Torvalds /* Send HCI command */ 2089a9de9248SMarcel Holtmann int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) 20901da177e4SLinus Torvalds { 20911da177e4SLinus Torvalds int len = HCI_COMMAND_HDR_SIZE + plen; 20921da177e4SLinus Torvalds struct hci_command_hdr *hdr; 20931da177e4SLinus Torvalds struct sk_buff *skb; 20941da177e4SLinus Torvalds 2095a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x plen %d", hdev->name, opcode, plen); 20961da177e4SLinus Torvalds 20971da177e4SLinus Torvalds skb = bt_skb_alloc(len, GFP_ATOMIC); 20981da177e4SLinus Torvalds if (!skb) { 2099ef222013SMarcel Holtmann BT_ERR("%s no memory for command", hdev->name); 21001da177e4SLinus Torvalds return -ENOMEM; 21011da177e4SLinus Torvalds } 21021da177e4SLinus Torvalds 21031da177e4SLinus Torvalds hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); 2104a9de9248SMarcel Holtmann hdr->opcode = cpu_to_le16(opcode); 21051da177e4SLinus Torvalds hdr->plen = plen; 21061da177e4SLinus Torvalds 21071da177e4SLinus Torvalds if (plen) 21081da177e4SLinus Torvalds memcpy(skb_put(skb, plen), param, plen); 21091da177e4SLinus Torvalds 21101da177e4SLinus Torvalds BT_DBG("skb len %d", skb->len); 21111da177e4SLinus Torvalds 21120d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; 21131da177e4SLinus Torvalds skb->dev = (void *) hdev; 2114c78ae283SMarcel Holtmann 2115a5040efaSJohan Hedberg if (test_bit(HCI_INIT, &hdev->flags)) 2116a5040efaSJohan Hedberg hdev->init_last_cmd = opcode; 2117a5040efaSJohan Hedberg 21181da177e4SLinus Torvalds skb_queue_tail(&hdev->cmd_q, skb); 2119c347b765SGustavo F. Padovan queue_work(hdev->workqueue, &hdev->cmd_work); 21201da177e4SLinus Torvalds 21211da177e4SLinus Torvalds return 0; 21221da177e4SLinus Torvalds } 21231da177e4SLinus Torvalds 21241da177e4SLinus Torvalds /* Get data from the previously sent command */ 2125a9de9248SMarcel Holtmann void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) 21261da177e4SLinus Torvalds { 21271da177e4SLinus Torvalds struct hci_command_hdr *hdr; 21281da177e4SLinus Torvalds 21291da177e4SLinus Torvalds if (!hdev->sent_cmd) 21301da177e4SLinus Torvalds return NULL; 21311da177e4SLinus Torvalds 21321da177e4SLinus Torvalds hdr = (void *) hdev->sent_cmd->data; 21331da177e4SLinus Torvalds 2134a9de9248SMarcel Holtmann if (hdr->opcode != cpu_to_le16(opcode)) 21351da177e4SLinus Torvalds return NULL; 21361da177e4SLinus Torvalds 2137a9de9248SMarcel Holtmann BT_DBG("%s opcode 0x%x", hdev->name, opcode); 21381da177e4SLinus Torvalds 21391da177e4SLinus Torvalds return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; 21401da177e4SLinus Torvalds } 21411da177e4SLinus Torvalds 21421da177e4SLinus Torvalds /* Send ACL data */ 21431da177e4SLinus Torvalds static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) 21441da177e4SLinus Torvalds { 21451da177e4SLinus Torvalds struct hci_acl_hdr *hdr; 21461da177e4SLinus Torvalds int len = skb->len; 21471da177e4SLinus Torvalds 2148badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_ACL_HDR_SIZE); 2149badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 21509c70220bSArnaldo Carvalho de Melo hdr = (struct hci_acl_hdr *)skb_transport_header(skb); 2151aca3192cSYOSHIFUJI Hideaki hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); 2152aca3192cSYOSHIFUJI Hideaki hdr->dlen = cpu_to_le16(len); 21531da177e4SLinus Torvalds } 21541da177e4SLinus Torvalds 215573d80debSLuiz Augusto von Dentz static void hci_queue_acl(struct hci_conn *conn, struct sk_buff_head *queue, 215673d80debSLuiz Augusto von Dentz struct sk_buff *skb, __u16 flags) 21571da177e4SLinus Torvalds { 21581da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 21591da177e4SLinus Torvalds struct sk_buff *list; 21601da177e4SLinus Torvalds 2161087bfd99SGustavo Padovan skb->len = skb_headlen(skb); 2162087bfd99SGustavo Padovan skb->data_len = 0; 2163087bfd99SGustavo Padovan 2164087bfd99SGustavo Padovan bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 2165087bfd99SGustavo Padovan hci_add_acl_hdr(skb, conn->handle, flags); 2166087bfd99SGustavo Padovan 216770f23020SAndrei Emeltchenko list = skb_shinfo(skb)->frag_list; 216870f23020SAndrei Emeltchenko if (!list) { 21691da177e4SLinus Torvalds /* Non fragmented */ 21701da177e4SLinus Torvalds BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); 21711da177e4SLinus Torvalds 217273d80debSLuiz Augusto von Dentz skb_queue_tail(queue, skb); 21731da177e4SLinus Torvalds } else { 21741da177e4SLinus Torvalds /* Fragmented */ 21751da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 21761da177e4SLinus Torvalds 21771da177e4SLinus Torvalds skb_shinfo(skb)->frag_list = NULL; 21781da177e4SLinus Torvalds 21791da177e4SLinus Torvalds /* Queue all fragments atomically */ 2180af3e6359SGustavo F. Padovan spin_lock(&queue->lock); 21811da177e4SLinus Torvalds 218273d80debSLuiz Augusto von Dentz __skb_queue_tail(queue, skb); 2183e702112fSAndrei Emeltchenko 2184e702112fSAndrei Emeltchenko flags &= ~ACL_START; 2185e702112fSAndrei Emeltchenko flags |= ACL_CONT; 21861da177e4SLinus Torvalds do { 21871da177e4SLinus Torvalds skb = list; list = list->next; 21881da177e4SLinus Torvalds 21891da177e4SLinus Torvalds skb->dev = (void *) hdev; 21900d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 2191e702112fSAndrei Emeltchenko hci_add_acl_hdr(skb, conn->handle, flags); 21921da177e4SLinus Torvalds 21931da177e4SLinus Torvalds BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); 21941da177e4SLinus Torvalds 219573d80debSLuiz Augusto von Dentz __skb_queue_tail(queue, skb); 21961da177e4SLinus Torvalds } while (list); 21971da177e4SLinus Torvalds 2198af3e6359SGustavo F. Padovan spin_unlock(&queue->lock); 21991da177e4SLinus Torvalds } 220073d80debSLuiz Augusto von Dentz } 220173d80debSLuiz Augusto von Dentz 220273d80debSLuiz Augusto von Dentz void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) 220373d80debSLuiz Augusto von Dentz { 220473d80debSLuiz Augusto von Dentz struct hci_conn *conn = chan->conn; 220573d80debSLuiz Augusto von Dentz struct hci_dev *hdev = conn->hdev; 220673d80debSLuiz Augusto von Dentz 220773d80debSLuiz Augusto von Dentz BT_DBG("%s chan %p flags 0x%x", hdev->name, chan, flags); 220873d80debSLuiz Augusto von Dentz 220973d80debSLuiz Augusto von Dentz skb->dev = (void *) hdev; 221073d80debSLuiz Augusto von Dentz 221173d80debSLuiz Augusto von Dentz hci_queue_acl(conn, &chan->data_q, skb, flags); 22121da177e4SLinus Torvalds 22133eff45eaSGustavo F. Padovan queue_work(hdev->workqueue, &hdev->tx_work); 22141da177e4SLinus Torvalds } 22151da177e4SLinus Torvalds 22161da177e4SLinus Torvalds /* Send SCO data */ 22170d861d8bSGustavo F. Padovan void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) 22181da177e4SLinus Torvalds { 22191da177e4SLinus Torvalds struct hci_dev *hdev = conn->hdev; 22201da177e4SLinus Torvalds struct hci_sco_hdr hdr; 22211da177e4SLinus Torvalds 22221da177e4SLinus Torvalds BT_DBG("%s len %d", hdev->name, skb->len); 22231da177e4SLinus Torvalds 2224aca3192cSYOSHIFUJI Hideaki hdr.handle = cpu_to_le16(conn->handle); 22251da177e4SLinus Torvalds hdr.dlen = skb->len; 22261da177e4SLinus Torvalds 2227badff6d0SArnaldo Carvalho de Melo skb_push(skb, HCI_SCO_HDR_SIZE); 2228badff6d0SArnaldo Carvalho de Melo skb_reset_transport_header(skb); 22299c70220bSArnaldo Carvalho de Melo memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); 22301da177e4SLinus Torvalds 22311da177e4SLinus Torvalds skb->dev = (void *) hdev; 22320d48d939SMarcel Holtmann bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; 2233c78ae283SMarcel Holtmann 22341da177e4SLinus Torvalds skb_queue_tail(&conn->data_q, skb); 22353eff45eaSGustavo F. Padovan queue_work(hdev->workqueue, &hdev->tx_work); 22361da177e4SLinus Torvalds } 22371da177e4SLinus Torvalds 22381da177e4SLinus Torvalds /* ---- HCI TX task (outgoing data) ---- */ 22391da177e4SLinus Torvalds 22401da177e4SLinus Torvalds /* HCI Connection scheduler */ 22416039aa73SGustavo Padovan static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, 2242a8c5fb1aSGustavo Padovan int *quote) 22431da177e4SLinus Torvalds { 22441da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 22458035ded4SLuiz Augusto von Dentz struct hci_conn *conn = NULL, *c; 2246abc5de8fSMikel Astiz unsigned int num = 0, min = ~0; 22471da177e4SLinus Torvalds 22481da177e4SLinus Torvalds /* We don't have to lock device here. Connections are always 22491da177e4SLinus Torvalds * added and removed with TX task disabled. */ 2250bf4c6325SGustavo F. Padovan 2251bf4c6325SGustavo F. Padovan rcu_read_lock(); 2252bf4c6325SGustavo F. Padovan 2253bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(c, &h->list, list) { 2254769be974SMarcel Holtmann if (c->type != type || skb_queue_empty(&c->data_q)) 22551da177e4SLinus Torvalds continue; 2256769be974SMarcel Holtmann 2257769be974SMarcel Holtmann if (c->state != BT_CONNECTED && c->state != BT_CONFIG) 2258769be974SMarcel Holtmann continue; 2259769be974SMarcel Holtmann 22601da177e4SLinus Torvalds num++; 22611da177e4SLinus Torvalds 22621da177e4SLinus Torvalds if (c->sent < min) { 22631da177e4SLinus Torvalds min = c->sent; 22641da177e4SLinus Torvalds conn = c; 22651da177e4SLinus Torvalds } 226652087a79SLuiz Augusto von Dentz 226752087a79SLuiz Augusto von Dentz if (hci_conn_num(hdev, type) == num) 226852087a79SLuiz Augusto von Dentz break; 22691da177e4SLinus Torvalds } 22701da177e4SLinus Torvalds 2271bf4c6325SGustavo F. Padovan rcu_read_unlock(); 2272bf4c6325SGustavo F. Padovan 22731da177e4SLinus Torvalds if (conn) { 22746ed58ec5SVille Tervo int cnt, q; 22756ed58ec5SVille Tervo 22766ed58ec5SVille Tervo switch (conn->type) { 22776ed58ec5SVille Tervo case ACL_LINK: 22786ed58ec5SVille Tervo cnt = hdev->acl_cnt; 22796ed58ec5SVille Tervo break; 22806ed58ec5SVille Tervo case SCO_LINK: 22816ed58ec5SVille Tervo case ESCO_LINK: 22826ed58ec5SVille Tervo cnt = hdev->sco_cnt; 22836ed58ec5SVille Tervo break; 22846ed58ec5SVille Tervo case LE_LINK: 22856ed58ec5SVille Tervo cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; 22866ed58ec5SVille Tervo break; 22876ed58ec5SVille Tervo default: 22886ed58ec5SVille Tervo cnt = 0; 22896ed58ec5SVille Tervo BT_ERR("Unknown link type"); 22906ed58ec5SVille Tervo } 22916ed58ec5SVille Tervo 22926ed58ec5SVille Tervo q = cnt / num; 22931da177e4SLinus Torvalds *quote = q ? q : 1; 22941da177e4SLinus Torvalds } else 22951da177e4SLinus Torvalds *quote = 0; 22961da177e4SLinus Torvalds 22971da177e4SLinus Torvalds BT_DBG("conn %p quote %d", conn, *quote); 22981da177e4SLinus Torvalds return conn; 22991da177e4SLinus Torvalds } 23001da177e4SLinus Torvalds 23016039aa73SGustavo Padovan static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) 23021da177e4SLinus Torvalds { 23031da177e4SLinus Torvalds struct hci_conn_hash *h = &hdev->conn_hash; 23041da177e4SLinus Torvalds struct hci_conn *c; 23051da177e4SLinus Torvalds 2306bae1f5d9SVille Tervo BT_ERR("%s link tx timeout", hdev->name); 23071da177e4SLinus Torvalds 2308bf4c6325SGustavo F. Padovan rcu_read_lock(); 2309bf4c6325SGustavo F. Padovan 23101da177e4SLinus Torvalds /* Kill stalled connections */ 2311bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(c, &h->list, list) { 2312bae1f5d9SVille Tervo if (c->type == type && c->sent) { 2313bae1f5d9SVille Tervo BT_ERR("%s killing stalled connection %s", 23141da177e4SLinus Torvalds hdev->name, batostr(&c->dst)); 23157490c6c2SAndrei Emeltchenko hci_acl_disconn(c, HCI_ERROR_REMOTE_USER_TERM); 23161da177e4SLinus Torvalds } 23171da177e4SLinus Torvalds } 2318bf4c6325SGustavo F. Padovan 2319bf4c6325SGustavo F. Padovan rcu_read_unlock(); 23201da177e4SLinus Torvalds } 23211da177e4SLinus Torvalds 23226039aa73SGustavo Padovan static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, 232373d80debSLuiz Augusto von Dentz int *quote) 232473d80debSLuiz Augusto von Dentz { 232573d80debSLuiz Augusto von Dentz struct hci_conn_hash *h = &hdev->conn_hash; 232673d80debSLuiz Augusto von Dentz struct hci_chan *chan = NULL; 2327abc5de8fSMikel Astiz unsigned int num = 0, min = ~0, cur_prio = 0; 232873d80debSLuiz Augusto von Dentz struct hci_conn *conn; 232973d80debSLuiz Augusto von Dentz int cnt, q, conn_num = 0; 233073d80debSLuiz Augusto von Dentz 233173d80debSLuiz Augusto von Dentz BT_DBG("%s", hdev->name); 233273d80debSLuiz Augusto von Dentz 2333bf4c6325SGustavo F. Padovan rcu_read_lock(); 2334bf4c6325SGustavo F. Padovan 2335bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(conn, &h->list, list) { 233673d80debSLuiz Augusto von Dentz struct hci_chan *tmp; 233773d80debSLuiz Augusto von Dentz 233873d80debSLuiz Augusto von Dentz if (conn->type != type) 233973d80debSLuiz Augusto von Dentz continue; 234073d80debSLuiz Augusto von Dentz 234173d80debSLuiz Augusto von Dentz if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) 234273d80debSLuiz Augusto von Dentz continue; 234373d80debSLuiz Augusto von Dentz 234473d80debSLuiz Augusto von Dentz conn_num++; 234573d80debSLuiz Augusto von Dentz 23468192edefSGustavo F. Padovan list_for_each_entry_rcu(tmp, &conn->chan_list, list) { 234773d80debSLuiz Augusto von Dentz struct sk_buff *skb; 234873d80debSLuiz Augusto von Dentz 234973d80debSLuiz Augusto von Dentz if (skb_queue_empty(&tmp->data_q)) 235073d80debSLuiz Augusto von Dentz continue; 235173d80debSLuiz Augusto von Dentz 235273d80debSLuiz Augusto von Dentz skb = skb_peek(&tmp->data_q); 235373d80debSLuiz Augusto von Dentz if (skb->priority < cur_prio) 235473d80debSLuiz Augusto von Dentz continue; 235573d80debSLuiz Augusto von Dentz 235673d80debSLuiz Augusto von Dentz if (skb->priority > cur_prio) { 235773d80debSLuiz Augusto von Dentz num = 0; 235873d80debSLuiz Augusto von Dentz min = ~0; 235973d80debSLuiz Augusto von Dentz cur_prio = skb->priority; 236073d80debSLuiz Augusto von Dentz } 236173d80debSLuiz Augusto von Dentz 236273d80debSLuiz Augusto von Dentz num++; 236373d80debSLuiz Augusto von Dentz 236473d80debSLuiz Augusto von Dentz if (conn->sent < min) { 236573d80debSLuiz Augusto von Dentz min = conn->sent; 236673d80debSLuiz Augusto von Dentz chan = tmp; 236773d80debSLuiz Augusto von Dentz } 236873d80debSLuiz Augusto von Dentz } 236973d80debSLuiz Augusto von Dentz 237073d80debSLuiz Augusto von Dentz if (hci_conn_num(hdev, type) == conn_num) 237173d80debSLuiz Augusto von Dentz break; 237273d80debSLuiz Augusto von Dentz } 237373d80debSLuiz Augusto von Dentz 2374bf4c6325SGustavo F. Padovan rcu_read_unlock(); 2375bf4c6325SGustavo F. Padovan 237673d80debSLuiz Augusto von Dentz if (!chan) 237773d80debSLuiz Augusto von Dentz return NULL; 237873d80debSLuiz Augusto von Dentz 237973d80debSLuiz Augusto von Dentz switch (chan->conn->type) { 238073d80debSLuiz Augusto von Dentz case ACL_LINK: 238173d80debSLuiz Augusto von Dentz cnt = hdev->acl_cnt; 238273d80debSLuiz Augusto von Dentz break; 238373d80debSLuiz Augusto von Dentz case SCO_LINK: 238473d80debSLuiz Augusto von Dentz case ESCO_LINK: 238573d80debSLuiz Augusto von Dentz cnt = hdev->sco_cnt; 238673d80debSLuiz Augusto von Dentz break; 238773d80debSLuiz Augusto von Dentz case LE_LINK: 238873d80debSLuiz Augusto von Dentz cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; 238973d80debSLuiz Augusto von Dentz break; 239073d80debSLuiz Augusto von Dentz default: 239173d80debSLuiz Augusto von Dentz cnt = 0; 239273d80debSLuiz Augusto von Dentz BT_ERR("Unknown link type"); 239373d80debSLuiz Augusto von Dentz } 239473d80debSLuiz Augusto von Dentz 239573d80debSLuiz Augusto von Dentz q = cnt / num; 239673d80debSLuiz Augusto von Dentz *quote = q ? q : 1; 239773d80debSLuiz Augusto von Dentz BT_DBG("chan %p quote %d", chan, *quote); 239873d80debSLuiz Augusto von Dentz return chan; 239973d80debSLuiz Augusto von Dentz } 240073d80debSLuiz Augusto von Dentz 240102b20f0bSLuiz Augusto von Dentz static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) 240202b20f0bSLuiz Augusto von Dentz { 240302b20f0bSLuiz Augusto von Dentz struct hci_conn_hash *h = &hdev->conn_hash; 240402b20f0bSLuiz Augusto von Dentz struct hci_conn *conn; 240502b20f0bSLuiz Augusto von Dentz int num = 0; 240602b20f0bSLuiz Augusto von Dentz 240702b20f0bSLuiz Augusto von Dentz BT_DBG("%s", hdev->name); 240802b20f0bSLuiz Augusto von Dentz 2409bf4c6325SGustavo F. Padovan rcu_read_lock(); 2410bf4c6325SGustavo F. Padovan 2411bf4c6325SGustavo F. Padovan list_for_each_entry_rcu(conn, &h->list, list) { 241202b20f0bSLuiz Augusto von Dentz struct hci_chan *chan; 241302b20f0bSLuiz Augusto von Dentz 241402b20f0bSLuiz Augusto von Dentz if (conn->type != type) 241502b20f0bSLuiz Augusto von Dentz continue; 241602b20f0bSLuiz Augusto von Dentz 241702b20f0bSLuiz Augusto von Dentz if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) 241802b20f0bSLuiz Augusto von Dentz continue; 241902b20f0bSLuiz Augusto von Dentz 242002b20f0bSLuiz Augusto von Dentz num++; 242102b20f0bSLuiz Augusto von Dentz 24228192edefSGustavo F. Padovan list_for_each_entry_rcu(chan, &conn->chan_list, list) { 242302b20f0bSLuiz Augusto von Dentz struct sk_buff *skb; 242402b20f0bSLuiz Augusto von Dentz 242502b20f0bSLuiz Augusto von Dentz if (chan->sent) { 242602b20f0bSLuiz Augusto von Dentz chan->sent = 0; 242702b20f0bSLuiz Augusto von Dentz continue; 242802b20f0bSLuiz Augusto von Dentz } 242902b20f0bSLuiz Augusto von Dentz 243002b20f0bSLuiz Augusto von Dentz if (skb_queue_empty(&chan->data_q)) 243102b20f0bSLuiz Augusto von Dentz continue; 243202b20f0bSLuiz Augusto von Dentz 243302b20f0bSLuiz Augusto von Dentz skb = skb_peek(&chan->data_q); 243402b20f0bSLuiz Augusto von Dentz if (skb->priority >= HCI_PRIO_MAX - 1) 243502b20f0bSLuiz Augusto von Dentz continue; 243602b20f0bSLuiz Augusto von Dentz 243702b20f0bSLuiz Augusto von Dentz skb->priority = HCI_PRIO_MAX - 1; 243802b20f0bSLuiz Augusto von Dentz 243902b20f0bSLuiz Augusto von Dentz BT_DBG("chan %p skb %p promoted to %d", chan, skb, 244002b20f0bSLuiz Augusto von Dentz skb->priority); 244102b20f0bSLuiz Augusto von Dentz } 244202b20f0bSLuiz Augusto von Dentz 244302b20f0bSLuiz Augusto von Dentz if (hci_conn_num(hdev, type) == num) 244402b20f0bSLuiz Augusto von Dentz break; 244502b20f0bSLuiz Augusto von Dentz } 2446bf4c6325SGustavo F. Padovan 2447bf4c6325SGustavo F. Padovan rcu_read_unlock(); 2448bf4c6325SGustavo F. Padovan 244902b20f0bSLuiz Augusto von Dentz } 245002b20f0bSLuiz Augusto von Dentz 2451b71d385aSAndrei Emeltchenko static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) 2452b71d385aSAndrei Emeltchenko { 2453b71d385aSAndrei Emeltchenko /* Calculate count of blocks used by this packet */ 2454b71d385aSAndrei Emeltchenko return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); 2455b71d385aSAndrei Emeltchenko } 2456b71d385aSAndrei Emeltchenko 24576039aa73SGustavo Padovan static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) 24581da177e4SLinus Torvalds { 24591da177e4SLinus Torvalds if (!test_bit(HCI_RAW, &hdev->flags)) { 24601da177e4SLinus Torvalds /* ACL tx timeout must be longer than maximum 24611da177e4SLinus Torvalds * link supervision timeout (40.9 seconds) */ 246263d2bc1bSAndrei Emeltchenko if (!cnt && time_after(jiffies, hdev->acl_last_tx + 24635f246e89SAndrei Emeltchenko HCI_ACL_TX_TIMEOUT)) 2464bae1f5d9SVille Tervo hci_link_tx_to(hdev, ACL_LINK); 24651da177e4SLinus Torvalds } 246663d2bc1bSAndrei Emeltchenko } 24671da177e4SLinus Torvalds 24686039aa73SGustavo Padovan static void hci_sched_acl_pkt(struct hci_dev *hdev) 246963d2bc1bSAndrei Emeltchenko { 247063d2bc1bSAndrei Emeltchenko unsigned int cnt = hdev->acl_cnt; 247163d2bc1bSAndrei Emeltchenko struct hci_chan *chan; 247263d2bc1bSAndrei Emeltchenko struct sk_buff *skb; 247363d2bc1bSAndrei Emeltchenko int quote; 247463d2bc1bSAndrei Emeltchenko 247563d2bc1bSAndrei Emeltchenko __check_timeout(hdev, cnt); 247604837f64SMarcel Holtmann 247773d80debSLuiz Augusto von Dentz while (hdev->acl_cnt && 247873d80debSLuiz Augusto von Dentz (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { 2479ec1cce24SLuiz Augusto von Dentz u32 priority = (skb_peek(&chan->data_q))->priority; 2480ec1cce24SLuiz Augusto von Dentz while (quote-- && (skb = skb_peek(&chan->data_q))) { 248173d80debSLuiz Augusto von Dentz BT_DBG("chan %p skb %p len %d priority %u", chan, skb, 248273d80debSLuiz Augusto von Dentz skb->len, skb->priority); 248373d80debSLuiz Augusto von Dentz 2484ec1cce24SLuiz Augusto von Dentz /* Stop if priority has changed */ 2485ec1cce24SLuiz Augusto von Dentz if (skb->priority < priority) 2486ec1cce24SLuiz Augusto von Dentz break; 2487ec1cce24SLuiz Augusto von Dentz 2488ec1cce24SLuiz Augusto von Dentz skb = skb_dequeue(&chan->data_q); 2489ec1cce24SLuiz Augusto von Dentz 249073d80debSLuiz Augusto von Dentz hci_conn_enter_active_mode(chan->conn, 249173d80debSLuiz Augusto von Dentz bt_cb(skb)->force_active); 249204837f64SMarcel Holtmann 24931da177e4SLinus Torvalds hci_send_frame(skb); 24941da177e4SLinus Torvalds hdev->acl_last_tx = jiffies; 24951da177e4SLinus Torvalds 24961da177e4SLinus Torvalds hdev->acl_cnt--; 249773d80debSLuiz Augusto von Dentz chan->sent++; 249873d80debSLuiz Augusto von Dentz chan->conn->sent++; 24991da177e4SLinus Torvalds } 25001da177e4SLinus Torvalds } 250102b20f0bSLuiz Augusto von Dentz 250202b20f0bSLuiz Augusto von Dentz if (cnt != hdev->acl_cnt) 250302b20f0bSLuiz Augusto von Dentz hci_prio_recalculate(hdev, ACL_LINK); 25041da177e4SLinus Torvalds } 25051da177e4SLinus Torvalds 25066039aa73SGustavo Padovan static void hci_sched_acl_blk(struct hci_dev *hdev) 2507b71d385aSAndrei Emeltchenko { 250863d2bc1bSAndrei Emeltchenko unsigned int cnt = hdev->block_cnt; 2509b71d385aSAndrei Emeltchenko struct hci_chan *chan; 2510b71d385aSAndrei Emeltchenko struct sk_buff *skb; 2511b71d385aSAndrei Emeltchenko int quote; 2512b71d385aSAndrei Emeltchenko 251363d2bc1bSAndrei Emeltchenko __check_timeout(hdev, cnt); 2514b71d385aSAndrei Emeltchenko 2515b71d385aSAndrei Emeltchenko while (hdev->block_cnt > 0 && 2516b71d385aSAndrei Emeltchenko (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { 2517b71d385aSAndrei Emeltchenko u32 priority = (skb_peek(&chan->data_q))->priority; 2518b71d385aSAndrei Emeltchenko while (quote > 0 && (skb = skb_peek(&chan->data_q))) { 2519b71d385aSAndrei Emeltchenko int blocks; 2520b71d385aSAndrei Emeltchenko 2521b71d385aSAndrei Emeltchenko BT_DBG("chan %p skb %p len %d priority %u", chan, skb, 2522b71d385aSAndrei Emeltchenko skb->len, skb->priority); 2523b71d385aSAndrei Emeltchenko 2524b71d385aSAndrei Emeltchenko /* Stop if priority has changed */ 2525b71d385aSAndrei Emeltchenko if (skb->priority < priority) 2526b71d385aSAndrei Emeltchenko break; 2527b71d385aSAndrei Emeltchenko 2528b71d385aSAndrei Emeltchenko skb = skb_dequeue(&chan->data_q); 2529b71d385aSAndrei Emeltchenko 2530b71d385aSAndrei Emeltchenko blocks = __get_blocks(hdev, skb); 2531b71d385aSAndrei Emeltchenko if (blocks > hdev->block_cnt) 2532b71d385aSAndrei Emeltchenko return; 2533b71d385aSAndrei Emeltchenko 2534b71d385aSAndrei Emeltchenko hci_conn_enter_active_mode(chan->conn, 2535b71d385aSAndrei Emeltchenko bt_cb(skb)->force_active); 2536b71d385aSAndrei Emeltchenko 2537b71d385aSAndrei Emeltchenko hci_send_frame(skb); 2538b71d385aSAndrei Emeltchenko hdev->acl_last_tx = jiffies; 2539b71d385aSAndrei Emeltchenko 2540b71d385aSAndrei Emeltchenko hdev->block_cnt -= blocks; 2541b71d385aSAndrei Emeltchenko quote -= blocks; 2542b71d385aSAndrei Emeltchenko 2543b71d385aSAndrei Emeltchenko chan->sent += blocks; 2544b71d385aSAndrei Emeltchenko chan->conn->sent += blocks; 2545b71d385aSAndrei Emeltchenko } 2546b71d385aSAndrei Emeltchenko } 2547b71d385aSAndrei Emeltchenko 2548b71d385aSAndrei Emeltchenko if (cnt != hdev->block_cnt) 2549b71d385aSAndrei Emeltchenko hci_prio_recalculate(hdev, ACL_LINK); 2550b71d385aSAndrei Emeltchenko } 2551b71d385aSAndrei Emeltchenko 25526039aa73SGustavo Padovan static void hci_sched_acl(struct hci_dev *hdev) 2553b71d385aSAndrei Emeltchenko { 2554b71d385aSAndrei Emeltchenko BT_DBG("%s", hdev->name); 2555b71d385aSAndrei Emeltchenko 2556b71d385aSAndrei Emeltchenko if (!hci_conn_num(hdev, ACL_LINK)) 2557b71d385aSAndrei Emeltchenko return; 2558b71d385aSAndrei Emeltchenko 2559b71d385aSAndrei Emeltchenko switch (hdev->flow_ctl_mode) { 2560b71d385aSAndrei Emeltchenko case HCI_FLOW_CTL_MODE_PACKET_BASED: 2561b71d385aSAndrei Emeltchenko hci_sched_acl_pkt(hdev); 2562b71d385aSAndrei Emeltchenko break; 2563b71d385aSAndrei Emeltchenko 2564b71d385aSAndrei Emeltchenko case HCI_FLOW_CTL_MODE_BLOCK_BASED: 2565b71d385aSAndrei Emeltchenko hci_sched_acl_blk(hdev); 2566b71d385aSAndrei Emeltchenko break; 2567b71d385aSAndrei Emeltchenko } 2568b71d385aSAndrei Emeltchenko } 2569b71d385aSAndrei Emeltchenko 25701da177e4SLinus Torvalds /* Schedule SCO */ 25716039aa73SGustavo Padovan static void hci_sched_sco(struct hci_dev *hdev) 25721da177e4SLinus Torvalds { 25731da177e4SLinus Torvalds struct hci_conn *conn; 25741da177e4SLinus Torvalds struct sk_buff *skb; 25751da177e4SLinus Torvalds int quote; 25761da177e4SLinus Torvalds 25771da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 25781da177e4SLinus Torvalds 257952087a79SLuiz Augusto von Dentz if (!hci_conn_num(hdev, SCO_LINK)) 258052087a79SLuiz Augusto von Dentz return; 258152087a79SLuiz Augusto von Dentz 25821da177e4SLinus Torvalds while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { 25831da177e4SLinus Torvalds while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 25841da177e4SLinus Torvalds BT_DBG("skb %p len %d", skb, skb->len); 25851da177e4SLinus Torvalds hci_send_frame(skb); 25861da177e4SLinus Torvalds 25871da177e4SLinus Torvalds conn->sent++; 25881da177e4SLinus Torvalds if (conn->sent == ~0) 25891da177e4SLinus Torvalds conn->sent = 0; 25901da177e4SLinus Torvalds } 25911da177e4SLinus Torvalds } 25921da177e4SLinus Torvalds } 25931da177e4SLinus Torvalds 25946039aa73SGustavo Padovan static void hci_sched_esco(struct hci_dev *hdev) 2595b6a0dc82SMarcel Holtmann { 2596b6a0dc82SMarcel Holtmann struct hci_conn *conn; 2597b6a0dc82SMarcel Holtmann struct sk_buff *skb; 2598b6a0dc82SMarcel Holtmann int quote; 2599b6a0dc82SMarcel Holtmann 2600b6a0dc82SMarcel Holtmann BT_DBG("%s", hdev->name); 2601b6a0dc82SMarcel Holtmann 260252087a79SLuiz Augusto von Dentz if (!hci_conn_num(hdev, ESCO_LINK)) 260352087a79SLuiz Augusto von Dentz return; 260452087a79SLuiz Augusto von Dentz 26058fc9ced3SGustavo Padovan while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, 26068fc9ced3SGustavo Padovan "e))) { 2607b6a0dc82SMarcel Holtmann while (quote-- && (skb = skb_dequeue(&conn->data_q))) { 2608b6a0dc82SMarcel Holtmann BT_DBG("skb %p len %d", skb, skb->len); 2609b6a0dc82SMarcel Holtmann hci_send_frame(skb); 2610b6a0dc82SMarcel Holtmann 2611b6a0dc82SMarcel Holtmann conn->sent++; 2612b6a0dc82SMarcel Holtmann if (conn->sent == ~0) 2613b6a0dc82SMarcel Holtmann conn->sent = 0; 2614b6a0dc82SMarcel Holtmann } 2615b6a0dc82SMarcel Holtmann } 2616b6a0dc82SMarcel Holtmann } 2617b6a0dc82SMarcel Holtmann 26186039aa73SGustavo Padovan static void hci_sched_le(struct hci_dev *hdev) 26196ed58ec5SVille Tervo { 262073d80debSLuiz Augusto von Dentz struct hci_chan *chan; 26216ed58ec5SVille Tervo struct sk_buff *skb; 262202b20f0bSLuiz Augusto von Dentz int quote, cnt, tmp; 26236ed58ec5SVille Tervo 26246ed58ec5SVille Tervo BT_DBG("%s", hdev->name); 26256ed58ec5SVille Tervo 262652087a79SLuiz Augusto von Dentz if (!hci_conn_num(hdev, LE_LINK)) 262752087a79SLuiz Augusto von Dentz return; 262852087a79SLuiz Augusto von Dentz 26296ed58ec5SVille Tervo if (!test_bit(HCI_RAW, &hdev->flags)) { 26306ed58ec5SVille Tervo /* LE tx timeout must be longer than maximum 26316ed58ec5SVille Tervo * link supervision timeout (40.9 seconds) */ 2632bae1f5d9SVille Tervo if (!hdev->le_cnt && hdev->le_pkts && 26336ed58ec5SVille Tervo time_after(jiffies, hdev->le_last_tx + HZ * 45)) 2634bae1f5d9SVille Tervo hci_link_tx_to(hdev, LE_LINK); 26356ed58ec5SVille Tervo } 26366ed58ec5SVille Tervo 26376ed58ec5SVille Tervo cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; 263802b20f0bSLuiz Augusto von Dentz tmp = cnt; 263973d80debSLuiz Augusto von Dentz while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { 2640ec1cce24SLuiz Augusto von Dentz u32 priority = (skb_peek(&chan->data_q))->priority; 2641ec1cce24SLuiz Augusto von Dentz while (quote-- && (skb = skb_peek(&chan->data_q))) { 264273d80debSLuiz Augusto von Dentz BT_DBG("chan %p skb %p len %d priority %u", chan, skb, 264373d80debSLuiz Augusto von Dentz skb->len, skb->priority); 26446ed58ec5SVille Tervo 2645ec1cce24SLuiz Augusto von Dentz /* Stop if priority has changed */ 2646ec1cce24SLuiz Augusto von Dentz if (skb->priority < priority) 2647ec1cce24SLuiz Augusto von Dentz break; 2648ec1cce24SLuiz Augusto von Dentz 2649ec1cce24SLuiz Augusto von Dentz skb = skb_dequeue(&chan->data_q); 2650ec1cce24SLuiz Augusto von Dentz 26516ed58ec5SVille Tervo hci_send_frame(skb); 26526ed58ec5SVille Tervo hdev->le_last_tx = jiffies; 26536ed58ec5SVille Tervo 26546ed58ec5SVille Tervo cnt--; 265573d80debSLuiz Augusto von Dentz chan->sent++; 265673d80debSLuiz Augusto von Dentz chan->conn->sent++; 26576ed58ec5SVille Tervo } 26586ed58ec5SVille Tervo } 265973d80debSLuiz Augusto von Dentz 26606ed58ec5SVille Tervo if (hdev->le_pkts) 26616ed58ec5SVille Tervo hdev->le_cnt = cnt; 26626ed58ec5SVille Tervo else 26636ed58ec5SVille Tervo hdev->acl_cnt = cnt; 266402b20f0bSLuiz Augusto von Dentz 266502b20f0bSLuiz Augusto von Dentz if (cnt != tmp) 266602b20f0bSLuiz Augusto von Dentz hci_prio_recalculate(hdev, LE_LINK); 26676ed58ec5SVille Tervo } 26686ed58ec5SVille Tervo 26693eff45eaSGustavo F. Padovan static void hci_tx_work(struct work_struct *work) 26701da177e4SLinus Torvalds { 26713eff45eaSGustavo F. Padovan struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); 26721da177e4SLinus Torvalds struct sk_buff *skb; 26731da177e4SLinus Torvalds 26746ed58ec5SVille Tervo BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, 26756ed58ec5SVille Tervo hdev->sco_cnt, hdev->le_cnt); 26761da177e4SLinus Torvalds 26771da177e4SLinus Torvalds /* Schedule queues and send stuff to HCI driver */ 26781da177e4SLinus Torvalds 26791da177e4SLinus Torvalds hci_sched_acl(hdev); 26801da177e4SLinus Torvalds 26811da177e4SLinus Torvalds hci_sched_sco(hdev); 26821da177e4SLinus Torvalds 2683b6a0dc82SMarcel Holtmann hci_sched_esco(hdev); 2684b6a0dc82SMarcel Holtmann 26856ed58ec5SVille Tervo hci_sched_le(hdev); 26866ed58ec5SVille Tervo 26871da177e4SLinus Torvalds /* Send next queued raw (unknown type) packet */ 26881da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->raw_q))) 26891da177e4SLinus Torvalds hci_send_frame(skb); 26901da177e4SLinus Torvalds } 26911da177e4SLinus Torvalds 269225985edcSLucas De Marchi /* ----- HCI RX task (incoming data processing) ----- */ 26931da177e4SLinus Torvalds 26941da177e4SLinus Torvalds /* ACL data packet */ 26956039aa73SGustavo Padovan static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) 26961da177e4SLinus Torvalds { 26971da177e4SLinus Torvalds struct hci_acl_hdr *hdr = (void *) skb->data; 26981da177e4SLinus Torvalds struct hci_conn *conn; 26991da177e4SLinus Torvalds __u16 handle, flags; 27001da177e4SLinus Torvalds 27011da177e4SLinus Torvalds skb_pull(skb, HCI_ACL_HDR_SIZE); 27021da177e4SLinus Torvalds 27031da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 27041da177e4SLinus Torvalds flags = hci_flags(handle); 27051da177e4SLinus Torvalds handle = hci_handle(handle); 27061da177e4SLinus Torvalds 2707a8c5fb1aSGustavo Padovan BT_DBG("%s len %d handle 0x%x flags 0x%x", hdev->name, skb->len, 2708a8c5fb1aSGustavo Padovan handle, flags); 27091da177e4SLinus Torvalds 27101da177e4SLinus Torvalds hdev->stat.acl_rx++; 27111da177e4SLinus Torvalds 27121da177e4SLinus Torvalds hci_dev_lock(hdev); 27131da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 27141da177e4SLinus Torvalds hci_dev_unlock(hdev); 27151da177e4SLinus Torvalds 27161da177e4SLinus Torvalds if (conn) { 271765983fc7SMat Martineau hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); 271804837f64SMarcel Holtmann 2719671267bfSJohan Hedberg hci_dev_lock(hdev); 2720671267bfSJohan Hedberg if (test_bit(HCI_MGMT, &hdev->dev_flags) && 2721671267bfSJohan Hedberg !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 2722671267bfSJohan Hedberg mgmt_device_connected(hdev, &conn->dst, conn->type, 2723671267bfSJohan Hedberg conn->dst_type, 0, NULL, 0, 2724671267bfSJohan Hedberg conn->dev_class); 2725671267bfSJohan Hedberg hci_dev_unlock(hdev); 2726671267bfSJohan Hedberg 27271da177e4SLinus Torvalds /* Send to upper protocol */ 2728686ebf28SUlisses Furquim l2cap_recv_acldata(conn, skb, flags); 27291da177e4SLinus Torvalds return; 27301da177e4SLinus Torvalds } else { 27311da177e4SLinus Torvalds BT_ERR("%s ACL packet for unknown connection handle %d", 27321da177e4SLinus Torvalds hdev->name, handle); 27331da177e4SLinus Torvalds } 27341da177e4SLinus Torvalds 27351da177e4SLinus Torvalds kfree_skb(skb); 27361da177e4SLinus Torvalds } 27371da177e4SLinus Torvalds 27381da177e4SLinus Torvalds /* SCO data packet */ 27396039aa73SGustavo Padovan static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) 27401da177e4SLinus Torvalds { 27411da177e4SLinus Torvalds struct hci_sco_hdr *hdr = (void *) skb->data; 27421da177e4SLinus Torvalds struct hci_conn *conn; 27431da177e4SLinus Torvalds __u16 handle; 27441da177e4SLinus Torvalds 27451da177e4SLinus Torvalds skb_pull(skb, HCI_SCO_HDR_SIZE); 27461da177e4SLinus Torvalds 27471da177e4SLinus Torvalds handle = __le16_to_cpu(hdr->handle); 27481da177e4SLinus Torvalds 27491da177e4SLinus Torvalds BT_DBG("%s len %d handle 0x%x", hdev->name, skb->len, handle); 27501da177e4SLinus Torvalds 27511da177e4SLinus Torvalds hdev->stat.sco_rx++; 27521da177e4SLinus Torvalds 27531da177e4SLinus Torvalds hci_dev_lock(hdev); 27541da177e4SLinus Torvalds conn = hci_conn_hash_lookup_handle(hdev, handle); 27551da177e4SLinus Torvalds hci_dev_unlock(hdev); 27561da177e4SLinus Torvalds 27571da177e4SLinus Torvalds if (conn) { 27581da177e4SLinus Torvalds /* Send to upper protocol */ 2759686ebf28SUlisses Furquim sco_recv_scodata(conn, skb); 27601da177e4SLinus Torvalds return; 27611da177e4SLinus Torvalds } else { 27621da177e4SLinus Torvalds BT_ERR("%s SCO packet for unknown connection handle %d", 27631da177e4SLinus Torvalds hdev->name, handle); 27641da177e4SLinus Torvalds } 27651da177e4SLinus Torvalds 27661da177e4SLinus Torvalds kfree_skb(skb); 27671da177e4SLinus Torvalds } 27681da177e4SLinus Torvalds 2769b78752ccSMarcel Holtmann static void hci_rx_work(struct work_struct *work) 27701da177e4SLinus Torvalds { 2771b78752ccSMarcel Holtmann struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); 27721da177e4SLinus Torvalds struct sk_buff *skb; 27731da177e4SLinus Torvalds 27741da177e4SLinus Torvalds BT_DBG("%s", hdev->name); 27751da177e4SLinus Torvalds 27761da177e4SLinus Torvalds while ((skb = skb_dequeue(&hdev->rx_q))) { 2777cd82e61cSMarcel Holtmann /* Send copy to monitor */ 2778cd82e61cSMarcel Holtmann hci_send_to_monitor(hdev, skb); 2779cd82e61cSMarcel Holtmann 27801da177e4SLinus Torvalds if (atomic_read(&hdev->promisc)) { 27811da177e4SLinus Torvalds /* Send copy to the sockets */ 2782470fe1b5SMarcel Holtmann hci_send_to_sock(hdev, skb); 27831da177e4SLinus Torvalds } 27841da177e4SLinus Torvalds 27851da177e4SLinus Torvalds if (test_bit(HCI_RAW, &hdev->flags)) { 27861da177e4SLinus Torvalds kfree_skb(skb); 27871da177e4SLinus Torvalds continue; 27881da177e4SLinus Torvalds } 27891da177e4SLinus Torvalds 27901da177e4SLinus Torvalds if (test_bit(HCI_INIT, &hdev->flags)) { 27911da177e4SLinus Torvalds /* Don't process data packets in this states. */ 27920d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 27931da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 27941da177e4SLinus Torvalds case HCI_SCODATA_PKT: 27951da177e4SLinus Torvalds kfree_skb(skb); 27961da177e4SLinus Torvalds continue; 27973ff50b79SStephen Hemminger } 27981da177e4SLinus Torvalds } 27991da177e4SLinus Torvalds 28001da177e4SLinus Torvalds /* Process frame */ 28010d48d939SMarcel Holtmann switch (bt_cb(skb)->pkt_type) { 28021da177e4SLinus Torvalds case HCI_EVENT_PKT: 2803b78752ccSMarcel Holtmann BT_DBG("%s Event packet", hdev->name); 28041da177e4SLinus Torvalds hci_event_packet(hdev, skb); 28051da177e4SLinus Torvalds break; 28061da177e4SLinus Torvalds 28071da177e4SLinus Torvalds case HCI_ACLDATA_PKT: 28081da177e4SLinus Torvalds BT_DBG("%s ACL data packet", hdev->name); 28091da177e4SLinus Torvalds hci_acldata_packet(hdev, skb); 28101da177e4SLinus Torvalds break; 28111da177e4SLinus Torvalds 28121da177e4SLinus Torvalds case HCI_SCODATA_PKT: 28131da177e4SLinus Torvalds BT_DBG("%s SCO data packet", hdev->name); 28141da177e4SLinus Torvalds hci_scodata_packet(hdev, skb); 28151da177e4SLinus Torvalds break; 28161da177e4SLinus Torvalds 28171da177e4SLinus Torvalds default: 28181da177e4SLinus Torvalds kfree_skb(skb); 28191da177e4SLinus Torvalds break; 28201da177e4SLinus Torvalds } 28211da177e4SLinus Torvalds } 28221da177e4SLinus Torvalds } 28231da177e4SLinus Torvalds 2824c347b765SGustavo F. Padovan static void hci_cmd_work(struct work_struct *work) 28251da177e4SLinus Torvalds { 2826c347b765SGustavo F. Padovan struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); 28271da177e4SLinus Torvalds struct sk_buff *skb; 28281da177e4SLinus Torvalds 28291da177e4SLinus Torvalds BT_DBG("%s cmd %d", hdev->name, atomic_read(&hdev->cmd_cnt)); 28301da177e4SLinus Torvalds 28311da177e4SLinus Torvalds /* Send queued commands */ 28325a08ecceSAndrei Emeltchenko if (atomic_read(&hdev->cmd_cnt)) { 28335a08ecceSAndrei Emeltchenko skb = skb_dequeue(&hdev->cmd_q); 28345a08ecceSAndrei Emeltchenko if (!skb) 28355a08ecceSAndrei Emeltchenko return; 28365a08ecceSAndrei Emeltchenko 28371da177e4SLinus Torvalds kfree_skb(hdev->sent_cmd); 28381da177e4SLinus Torvalds 283970f23020SAndrei Emeltchenko hdev->sent_cmd = skb_clone(skb, GFP_ATOMIC); 284070f23020SAndrei Emeltchenko if (hdev->sent_cmd) { 28411da177e4SLinus Torvalds atomic_dec(&hdev->cmd_cnt); 28421da177e4SLinus Torvalds hci_send_frame(skb); 28437bdb8a5cSSzymon Janc if (test_bit(HCI_RESET, &hdev->flags)) 28447bdb8a5cSSzymon Janc del_timer(&hdev->cmd_timer); 28457bdb8a5cSSzymon Janc else 28466bd32326SVille Tervo mod_timer(&hdev->cmd_timer, 28475f246e89SAndrei Emeltchenko jiffies + HCI_CMD_TIMEOUT); 28481da177e4SLinus Torvalds } else { 28491da177e4SLinus Torvalds skb_queue_head(&hdev->cmd_q, skb); 2850c347b765SGustavo F. Padovan queue_work(hdev->workqueue, &hdev->cmd_work); 28511da177e4SLinus Torvalds } 28521da177e4SLinus Torvalds } 28531da177e4SLinus Torvalds } 28542519a1fcSAndre Guedes 28552519a1fcSAndre Guedes int hci_do_inquiry(struct hci_dev *hdev, u8 length) 28562519a1fcSAndre Guedes { 28572519a1fcSAndre Guedes /* General inquiry access code (GIAC) */ 28582519a1fcSAndre Guedes u8 lap[3] = { 0x33, 0x8b, 0x9e }; 28592519a1fcSAndre Guedes struct hci_cp_inquiry cp; 28602519a1fcSAndre Guedes 28612519a1fcSAndre Guedes BT_DBG("%s", hdev->name); 28622519a1fcSAndre Guedes 28632519a1fcSAndre Guedes if (test_bit(HCI_INQUIRY, &hdev->flags)) 28642519a1fcSAndre Guedes return -EINPROGRESS; 28652519a1fcSAndre Guedes 28664663262cSJohan Hedberg inquiry_cache_flush(hdev); 28674663262cSJohan Hedberg 28682519a1fcSAndre Guedes memset(&cp, 0, sizeof(cp)); 28692519a1fcSAndre Guedes memcpy(&cp.lap, lap, sizeof(cp.lap)); 28702519a1fcSAndre Guedes cp.length = length; 28712519a1fcSAndre Guedes 28722519a1fcSAndre Guedes return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); 28732519a1fcSAndre Guedes } 2874023d5049SAndre Guedes 2875023d5049SAndre Guedes int hci_cancel_inquiry(struct hci_dev *hdev) 2876023d5049SAndre Guedes { 2877023d5049SAndre Guedes BT_DBG("%s", hdev->name); 2878023d5049SAndre Guedes 2879023d5049SAndre Guedes if (!test_bit(HCI_INQUIRY, &hdev->flags)) 28807537e5c3SAndre Guedes return -EALREADY; 2881023d5049SAndre Guedes 2882023d5049SAndre Guedes return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); 2883023d5049SAndre Guedes } 288431f7956cSAndre Guedes 288531f7956cSAndre Guedes u8 bdaddr_to_le(u8 bdaddr_type) 288631f7956cSAndre Guedes { 288731f7956cSAndre Guedes switch (bdaddr_type) { 288831f7956cSAndre Guedes case BDADDR_LE_PUBLIC: 288931f7956cSAndre Guedes return ADDR_LE_DEV_PUBLIC; 289031f7956cSAndre Guedes 289131f7956cSAndre Guedes default: 289231f7956cSAndre Guedes /* Fallback to LE Random address type */ 289331f7956cSAndre Guedes return ADDR_LE_DEV_RANDOM; 289431f7956cSAndre Guedes } 289531f7956cSAndre Guedes } 2896