cregit-Linux how code gets into the kernel

Release 4.11 net/bluetooth/hci_conn.c

Directory: net/bluetooth
/*
   BlueZ - Bluetooth protocol stack for Linux
   Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.

   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

/* Bluetooth HCI connection handling. */

#include <linux/export.h>
#include <linux/debugfs.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>

#include "hci_request.h"
#include "smp.h"
#include "a2mp.h"


struct sco_param {
	
u16 pkt_type;
	
u16 max_latency;
	
u8  retrans_effort;
};


static const struct sco_param esco_param_cvsd[] = {
	{ EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a,	0x01 }, /* S3 */
	{ EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007,	0x01 }, /* S2 */
	{ EDR_ESCO_MASK | ESCO_EV3,   0x0007,	0x01 }, /* S1 */
	{ EDR_ESCO_MASK | ESCO_HV3,   0xffff,	0x01 }, /* D1 */
	{ EDR_ESCO_MASK | ESCO_HV1,   0xffff,	0x01 }, /* D0 */
};


static const struct sco_param sco_param_cvsd[] = {
	{ EDR_ESCO_MASK | ESCO_HV3,   0xffff,	0xff }, /* D1 */
	{ EDR_ESCO_MASK | ESCO_HV1,   0xffff,	0xff }, /* D0 */
};


static const struct sco_param esco_param_msbc[] = {
	{ EDR_ESCO_MASK & ~ESCO_2EV3, 0x000d,	0x02 }, /* T2 */
	{ EDR_ESCO_MASK | ESCO_EV3,   0x0008,	0x02 }, /* T1 */
};

/* This function requires the caller holds hdev->lock */

static void hci_connect_le_scan_cleanup(struct hci_conn *conn) { struct hci_conn_params *params; struct hci_dev *hdev = conn->hdev; struct smp_irk *irk; bdaddr_t *bdaddr; u8 bdaddr_type; bdaddr = &conn->dst; bdaddr_type = conn->dst_type; /* Check if we need to convert to identity address */ irk = hci_get_irk(hdev, bdaddr, bdaddr_type); if (irk) { bdaddr = &irk->bdaddr; bdaddr_type = irk->addr_type; } params = hci_pend_le_action_lookup(&hdev->pend_le_conns, bdaddr, bdaddr_type); if (!params || !params->explicit_connect) return; /* The connection attempt was doing scan for new RPA, and is * in scan phase. If params are not associated with any other * autoconnect action, remove them completely. If they are, just unmark * them as waiting for connection, by clearing explicit_connect field. */ params->explicit_connect = false; list_del_init(&params->action); switch (params->auto_connect) { case HCI_AUTO_CONN_EXPLICIT: hci_conn_params_del(hdev, bdaddr, bdaddr_type); /* return instead of break to avoid duplicate scan update */ return; case HCI_AUTO_CONN_DIRECT: case HCI_AUTO_CONN_ALWAYS: list_add(&params->action, &hdev->pend_le_conns); break; case HCI_AUTO_CONN_REPORT: list_add(&params->action, &hdev->pend_le_reports); break; default: break; } hci_update_background_scan(hdev); }

Contributors

PersonTokensPropCommitsCommitProp
Jakub Pawlowski11259.89%240.00%
Johan Hedberg7540.11%360.00%
Total187100.00%5100.00%


static void hci_conn_cleanup(struct hci_conn *conn) { struct hci_dev *hdev = conn->hdev; if (test_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags)) hci_conn_params_del(conn->hdev, &conn->dst, conn->dst_type); hci_chan_list_flush(conn); hci_conn_hash_del(hdev, conn); if (hdev->notify) hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); hci_conn_del_sysfs(conn); debugfs_remove_recursive(conn->debugfs); hci_dev_put(hdev); hci_conn_put(conn); }

Contributors

PersonTokensPropCommitsCommitProp
Johan Hedberg97100.00%1100.00%
Total97100.00%1100.00%


static void le_scan_cleanup(struct work_struct *work) { struct hci_conn *conn = container_of(work, struct hci_conn, le_scan_cleanup); struct hci_dev *hdev = conn->hdev; struct hci_conn *c = NULL; BT_DBG("%s hcon %p", hdev->name, conn); hci_dev_lock(hdev); /* Check that the hci_conn is still around */ rcu_read_lock(); list_for_each_entry_rcu(c, &hdev->conn_hash.list, list) { if (c == conn) break; } rcu_read_unlock(); if (c == conn) { hci_connect_le_scan_cleanup(conn); hci_conn_cleanup(conn); } hci_dev_unlock(hdev); hci_dev_put(hdev); hci_conn_put(conn); }

Contributors

PersonTokensPropCommitsCommitProp
Johan Hedberg115100.00%1100.00%
Total115100.00%1100.00%


static void hci_connect_le_scan_remove(struct hci_conn *conn) { BT_DBG("%s hcon %p", conn->hdev->name, conn); /* We can't call hci_conn_del/hci_conn_cleanup here since that * could deadlock with another hci_conn_del() call that's holding * hci_dev_lock and doing cancel_delayed_work_sync(&conn->disc_work). * Instead, grab temporary extra references to the hci_dev and * hci_conn and perform the necessary cleanup in a separate work * callback. */ hci_dev_hold(conn->hdev); hci_conn_get(conn); /* Even though we hold a reference to the hdev, many other * things might get cleaned up meanwhile, including the hdev's * own workqueue, so we can't use that for scheduling. */ schedule_work(&conn->le_scan_cleanup); }

Contributors

PersonTokensPropCommitsCommitProp
Johan Hedberg2758.70%266.67%
Jakub Pawlowski1941.30%133.33%
Total46100.00%3100.00%


static void hci_acl_create_connection(struct hci_conn *conn) { struct hci_dev *hdev = conn->hdev; struct inquiry_entry *ie; struct hci_cp_create_conn cp; BT_DBG("hcon %p", conn); conn->state = BT_CONNECT; conn->out = true; conn->role = HCI_ROLE_MASTER; conn->attempt++; conn->link_policy = hdev->link_policy; memset(&cp, 0, sizeof(cp)); bacpy(&cp.bdaddr, &conn->dst); cp.pscan_rep_mode = 0x02; ie = hci_inquiry_cache_lookup(hdev, &conn->dst); if (ie) { if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { cp.pscan_rep_mode = ie->data.pscan_rep_mode; cp.pscan_mode = ie->data.pscan_mode; cp.clock_offset = ie->data.clock_offset | cpu_to_le16(0x8000); } memcpy(conn->dev_class, ie->data.dev_class, 3); if (ie->data.ssp_mode > 0) set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); } cp.pkt_type = cpu_to_le16(conn->pkt_type); if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) cp.role_switch = 0x01; else cp.role_switch = 0x00; hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); }

Contributors

PersonTokensPropCommitsCommitProp
Maksim Krasnyanskiy13352.57%312.50%
Marcel Holtmann5120.16%1041.67%
Linus Torvalds4116.21%14.17%
Johan Hedberg187.11%312.50%
Andrei Emeltchenko51.98%28.33%
Vinicius Costa Gomes20.79%28.33%
Hideaki Yoshifuji / 吉藤英明10.40%14.17%
Maxim Krasnyansky10.40%14.17%
Joe Perches10.40%14.17%
Total253100.00%24100.00%


int hci_disconnect(struct hci_conn *conn, __u8 reason) { BT_DBG("hcon %p", conn); /* When we are master of an established connection and it enters * the disconnect timeout, then go ahead and try to read the * current clock offset. Processing of the result is done * within the event handling and hci_clock_offset_evt function. */ if (conn->type == ACL_LINK && conn->role == HCI_ROLE_MASTER && (conn->state == BT_CONNECTED || conn->state == BT_CONFIG)) { struct hci_dev *hdev = conn->hdev; struct hci_cp_read_clock_offset clkoff_cp; clkoff_cp.handle = cpu_to_le16(conn->handle); hci_send_cmd(hdev, HCI_OP_READ_CLOCK_OFFSET, sizeof(clkoff_cp), &clkoff_cp); } return hci_abort_conn(conn, reason); }

Contributors

PersonTokensPropCommitsCommitProp
Johan Hedberg7172.45%337.50%
Linus Torvalds1212.24%112.50%
Maksim Krasnyanskiy99.18%112.50%
Fabian Frederick44.08%112.50%
Andrei Emeltchenko11.02%112.50%
Andre Guedes11.02%112.50%
Total98100.00%8100.00%


static void hci_add_sco(struct hci_conn *conn, __u16 handle) { struct hci_dev *hdev = conn->hdev; struct hci_cp_add_sco cp; BT_DBG("hcon %p", conn); conn->state = BT_CONNECT; conn->out = true; conn->attempt++; cp.handle = cpu_to_le16(handle); cp.pkt_type = cpu_to_le16(conn->pkt_type); hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); }

Contributors

PersonTokensPropCommitsCommitProp
Maksim Krasnyanskiy4653.49%325.00%
Linus Torvalds2326.74%18.33%
Marcel Holtmann1213.95%433.33%
Hideaki Yoshifuji / 吉藤英明22.33%18.33%
Andrei Emeltchenko11.16%18.33%
Vinicius Costa Gomes11.16%18.33%
Johan Hedberg11.16%18.33%
Total86100.00%12100.00%


bool hci_setup_sync(struct hci_conn *conn, __u16 handle) { struct hci_dev *hdev = conn->hdev; struct hci_cp_setup_sync_conn cp; const struct sco_param *param; BT_DBG("hcon %p", conn); conn->state = BT_CONNECT; conn->out = true; conn->attempt++; cp.handle = cpu_to_le16(handle); cp.tx_bandwidth = cpu_to_le32(0x00001f40); cp.rx_bandwidth = cpu_to_le32(0x00001f40); cp.voice_setting = cpu_to_le16(conn->setting); switch (conn->setting & SCO_AIRMODE_MASK) { case SCO_AIRMODE_TRANSP: if (conn->attempt > ARRAY_SIZE(esco_param_msbc)) return false; param = &esco_param_msbc[conn->attempt - 1]; break; case SCO_AIRMODE_CVSD: if (lmp_esco_capable(conn->link)) { if (conn->attempt > ARRAY_SIZE(esco_param_cvsd)) return false; param = &esco_param_cvsd[conn->attempt - 1]; } else { if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) return false; param = &sco_param_cvsd[conn->attempt - 1]; } break; default: return false; } cp.retrans_effort = param->retrans_effort; cp.pkt_type = __cpu_to_le16(param->pkt_type); cp.max_latency = __cpu_to_le16(param->max_latency); if (hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0) return false; return true; }

Contributors

PersonTokensPropCommitsCommitProp
Frédéric Dalleau11342.97%220.00%
Marcel Holtmann9536.12%220.00%
Bernhard Thaler4115.59%110.00%
Johan Hedberg114.18%330.00%
Joe Perches20.76%110.00%
Andrei Emeltchenko10.38%110.00%
Total263100.00%10100.00%


u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, u16 to_multiplier) { struct hci_dev *hdev = conn->hdev; struct hci_conn_params *params; struct hci_cp_le_conn_update cp; hci_dev_lock(hdev); params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); if (params) { params->conn_min_interval = min; params->conn_max_interval = max; params->conn_latency = latency; params->supervision_timeout = to_multiplier; } hci_dev_unlock(hdev); memset(&cp, 0, sizeof(cp)); cp.handle = cpu_to_le16(conn->handle); cp.conn_interval_min = cpu_to_le16(min); cp.conn_interval_max = cpu_to_le16(max); cp.conn_latency = cpu_to_le16(latency); cp.supervision_timeout = cpu_to_le16(to_multiplier); cp.min_ce_len = cpu_to_le16(0x0000); cp.max_ce_len = cpu_to_le16(0x0000); hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); if (params) return 0x01; return 0x00; }

Contributors

PersonTokensPropCommitsCommitProp
Claudio Takahasi11959.80%120.00%
Marcel Holtmann6733.67%240.00%
Johan Hedberg115.53%120.00%
Joe Perches21.01%120.00%
Total199100.00%5100.00%


void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, __u8 ltk[16], __u8 key_size) { struct hci_dev *hdev = conn->hdev; struct hci_cp_le_start_enc cp; BT_DBG("hcon %p", conn); memset(&cp, 0, sizeof(cp)); cp.handle = cpu_to_le16(conn->handle); cp.rand = rand; cp.ediv = ediv; memcpy(cp.ltk, ltk, key_size); hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); }

Contributors

PersonTokensPropCommitsCommitProp
Vinicius Costa Gomes9689.72%125.00%
Marcel Holtmann65.61%125.00%
Johan Hedberg43.74%125.00%
Andrei Emeltchenko10.93%125.00%
Total107100.00%4100.00%

/* Device _must_ be locked */
void hci_sco_setup(struct hci_conn *conn, __u8 status) { struct hci_conn *sco = conn->link; if (!sco) return; BT_DBG("hcon %p", conn); if (!status) { if (lmp_esco_capable(conn->hdev)) hci_setup_sync(sco, conn->handle); else hci_add_sco(sco, conn->handle); } else { hci_connect_cfm(sco, status); hci_conn_del(sco); } }

Contributors

PersonTokensPropCommitsCommitProp
Marcel Holtmann7790.59%133.33%
Andrei Emeltchenko78.24%133.33%
Johan Hedberg11.18%133.33%
Total85100.00%3100.00%


static void hci_conn_timeout(struct work_struct *work) { struct hci_conn *conn = container_of(work, struct hci_conn, disc_work.work); int refcnt = atomic_read(&conn->refcnt); BT_DBG("hcon %p state %s", conn, state_to_string(conn->state)); WARN_ON(refcnt < 0); /* FIXME: It was observed that in pairing failed scenario, refcnt * drops below 0. Probably this is because l2cap_conn_del calls * l2cap_chan_del for each channel, and inside l2cap_chan_del conn is * dropped. After that loop hci_chan_del is called which also drops * conn. For now make sure that ACL is alive if refcnt is higher then 0, * otherwise drop it. */ if (refcnt > 0) return; /* LE connections in scanning state need special handling */ if (conn->state == BT_CONNECT && conn->type == LE_LINK && test_bit(HCI_CONN_SCANNING, &conn->flags)) { hci_connect_le_scan_remove(conn); return; } hci_abort_conn(conn, hci_proto_disconn_ind(conn)); }

Contributors

PersonTokensPropCommitsCommitProp
Lukasz Rymanowski2118.92%17.14%
Maksim Krasnyanskiy2118.92%17.14%
Gustavo Fernando Padovan1513.51%17.14%
Marcel Holtmann1210.81%428.57%
Jakub Pawlowski109.01%17.14%
Johan Hedberg98.11%17.14%
Ville Tervo76.31%17.14%
Claudio Takahasi65.41%17.14%
Linus Torvalds65.41%17.14%
Andrei Emeltchenko43.60%214.29%
Total111100.00%14100.00%

/* Enter sniff mode */
static void hci_conn_idle(struct work_struct *work) { struct hci_conn *conn = container_of(work, struct hci_conn, idle_work.work); struct hci_dev *hdev = conn->hdev; BT_DBG("hcon %p mode %d", conn, conn->mode); if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) return; if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) return; if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { struct hci_cp_sniff_subrate cp; cp.handle = cpu_to_le16(conn->handle); cp.max_latency = cpu_to_le16(0); cp.min_remote_timeout = cpu_to_le16(0); cp.min_local_timeout = cpu_to_le16(0); hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); } if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { struct hci_cp_sniff_mode cp; cp.handle = cpu_to_le16(conn->handle); cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); cp.attempt = cpu_to_le16(4); cp.timeout = cpu_to_le16(1); hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); } }

Contributors

PersonTokensPropCommitsCommitProp
Gustavo Fernando Padovan21088.61%120.00%
Johan Hedberg218.86%240.00%
Joe Perches52.11%120.00%
Andrei Emeltchenko10.42%120.00%
Total237100.00%5100.00%


static void hci_conn_auto_accept(struct work_struct *work) { struct hci_conn *conn = container_of(work, struct hci_conn, auto_accept_work.work); hci_send_cmd(conn->hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), &conn->dst); }

Contributors

PersonTokensPropCommitsCommitProp
Johan Hedberg49100.00%2100.00%
Total49100.00%2100.00%


static void le_conn_timeout(struct work_struct *work) { struct hci_conn *conn = container_of(work, struct hci_conn, le_conn_timeout.work); struct hci_dev *hdev = conn->hdev; BT_DBG(""); /* We could end up here due to having done directed advertising, * so clean up the state if necessary. This should however only * happen with broken hardware or if low duty cycle was used * (which doesn't have a timeout of its own). */ if (conn->role == HCI_ROLE_SLAVE) { u8 enable = 0x00; hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); hci_le_conn_failed(conn, HCI_ERROR_ADVERTISING_TIMEOUT); return; } hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM); }

Contributors

PersonTokensPropCommitsCommitProp
Johan Hedberg88100.00%4100.00%
Total88100.00%4100.00%


struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, u8 role) { struct hci_conn *conn; BT_DBG("%s dst %pMR", hdev->name, dst); conn = kzalloc(sizeof(*conn), GFP_KERNEL); if (!conn) return NULL; bacpy(&conn->dst, dst); bacpy(&conn->src, &hdev->bdaddr); conn->hdev = hdev; conn->type = type; conn->role = role; conn->mode = HCI_CM_ACTIVE; conn->state = BT_OPEN; conn->auth_type = HCI_AT_GENERAL_BONDING; conn->io_capability = hdev->io_capability; conn->remote_auth = 0xff; conn->key_type = 0xff; conn->rssi = HCI_RSSI_INVALID; conn->tx_power = HCI_TX_POWER_INVALID; conn->max_tx_power = HCI_TX_POWER_INVALID; set_bit(HCI_CONN_POWER_SAVE, &conn->flags); conn->disc_timeout = HCI_DISCONN_TIMEOUT; if (conn->role == HCI_ROLE_MASTER) conn->out = true; switch (type) { case ACL_LINK: conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; break; case LE_LINK: /* conn->src should reflect the local identity address */ hci_copy_identity_address(hdev, &conn->src, &conn->src_type); break; case SCO_LINK: if (lmp_esco_capable(hdev)) conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | (hdev->esco_type & EDR_ESCO_MASK); else conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; break; case ESCO_LINK: conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; break; } skb_queue_head_init(&conn->data_q); INIT_LIST_HEAD(&conn->chan_list); INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); INIT_DELAYED_WORK(&conn->auto_accept_work, hci_conn_auto_accept); INIT_DELAYED_WORK(&conn->idle_work, hci_conn_idle); INIT_DELAYED_WORK(&conn->le_conn_timeout, le_conn_timeout); INIT_WORK(&conn->le_scan_cleanup, le_scan_cleanup); atomic_set(&conn->refcnt, 0); hci_dev_hold(hdev); hci_conn_hash_add(hdev, conn); if (hdev->notify) hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); hci_conn_init_sysfs(conn); return conn; }

Contributors

PersonTokensPropCommitsCommitProp
Marcel Holtmann14236.04%721.88%
Johan Hedberg10526.65%1237.50%
Maksim Krasnyanskiy6917.51%26.25%
Linus Torvalds389.64%13.12%
Andrzej Kaczmarek123.05%26.25%
Andrei Emeltchenko71.78%26.25%
Waldemar Rymarkiewicz61.52%13.12%
Gustavo Fernando Padovan61.52%26.25%
Luiz Augusto von Dentz41.02%13.12%
Pavel Emelyanov41.02%13.12%
Andre Guedes10.25%13.12%
Total394100.00%32100.00%


int hci_conn_del(struct hci_conn *conn) { struct hci_dev *hdev = conn->hdev; BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle); cancel_delayed_work_sync(&conn->disc_work); cancel_delayed_work_sync(&conn->auto_accept_work); cancel_delayed_work_sync(&conn->idle_work); if (conn->type == ACL_LINK) { struct hci_conn *sco = conn->link; if (sco) sco->link = NULL; /* Unacked frames */ hdev->acl_cnt += conn->sent; } else if (conn->type == LE_LINK) { cancel_delayed_work(&conn->le_conn_timeout); if (hdev->le_pkts) hdev->le_cnt += conn->sent; else hdev->acl_cnt += conn->sent; } else { struct hci_conn *acl = conn->link; if (acl) { acl->link = NULL; hci_conn_drop(acl); } } if (conn->amp_mgr) amp_mgr_put(conn->amp_mgr); skb_queue_purge(&conn->data_q); /* Remove the connection from the list and cleanup its remaining * state. This is a separate function since for some cases like * BT_CONNECT_SCAN we *only* want the cleanup part without the * rest of hci_conn_del. */ hci_conn_cleanup(conn); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Maksim Krasnyanskiy5728.93%16.25%
Linus Torvalds3718.78%16.25%
Ville Tervo3417.26%16.25%
Marcel Holtmann2814.21%212.50%
Johan Hedberg2110.66%637.50%
Andrei Emeltchenko147.11%212.50%
Tomas Targownik42.03%16.25%
Gustavo Fernando Padovan10.51%16.25%
David Herrmann10.51%16.25%
Total197100.00%16100.00%


struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, uint8_t src_type) { int use_src = bacmp(src, BDADDR_ANY); struct hci_dev *hdev = NULL, *d; BT_DBG("%pMR -> %pMR", src, dst); read_lock(&hci_dev_list_lock); list_for_each_entry(d, &hci_dev_list, list) { if (!test_bit(HCI_UP, &d->flags) || hci_dev_test_flag(d, HCI_USER_CHANNEL) || d->dev_type != HCI_PRIMARY) continue; /* Simple routing: * No source address - find interface with bdaddr != dst * Source address - find interface with bdaddr == src */ if (use_src) { bdaddr_t id_addr; u8 id_addr_type; if (src_type == BDADDR_BREDR) { if (!lmp_bredr_capable(d)) continue; bacpy(&id_addr, &d->bdaddr); id_addr_type = BDADDR_BREDR; } else { if (!lmp_le_capable(d)) continue; hci_copy_identity_address(d, &id_addr, &id_addr_type); /* Convert from HCI to three-value type */ if (id_addr_type ==