diff options
Diffstat (limited to 'net/bluetooth_tizen/hci_conn.c')
| -rw-r--r-- | net/bluetooth_tizen/hci_conn.c | 984 |
1 files changed, 0 insertions, 984 deletions
diff --git a/net/bluetooth_tizen/hci_conn.c b/net/bluetooth_tizen/hci_conn.c deleted file mode 100644 index 459227d..0000000 --- a/net/bluetooth_tizen/hci_conn.c +++ /dev/null @@ -1,984 +0,0 @@ -/* - 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/module.h> - -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/poll.h> -#include <linux/fcntl.h> -#include <linux/init.h> -#include <linux/skbuff.h> -#include <linux/interrupt.h> -#include <linux/notifier.h> -#include <net/sock.h> - -#include <asm/system.h> -#include <linux/uaccess.h> -#include <asm/unaligned.h> - -#include <net/bluetooth/bluetooth.h> -#include <net/bluetooth/hci_core.h> - -static void hci_le_connect(struct hci_conn *conn) -{ - struct hci_dev *hdev = conn->hdev; - struct hci_cp_le_create_conn cp; - - conn->state = BT_CONNECT; - conn->out = true; - conn->link_mode |= HCI_LM_MASTER; - conn->sec_level = BT_SECURITY_LOW; - - memset(&cp, 0, sizeof(cp)); - cp.scan_interval = cpu_to_le16(0x0060); - cp.scan_window = cpu_to_le16(0x0030); - bacpy(&cp.peer_addr, &conn->dst); - cp.peer_addr_type = conn->dst_type; - cp.conn_interval_min = cpu_to_le16(0x0028); - cp.conn_interval_max = cpu_to_le16(0x0038); - cp.supervision_timeout = cpu_to_le16(0x002a); - cp.min_ce_len = cpu_to_le16(0x0000); - cp.max_ce_len = cpu_to_le16(0x0000); - - hci_send_cmd(hdev, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp); -} - -static void hci_le_connect_cancel(struct hci_conn *conn) -{ - hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL); -} - -void hci_acl_connect(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->link_mode = HCI_LM_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); -} - -static void hci_acl_connect_cancel(struct hci_conn *conn) -{ - struct hci_cp_create_conn_cancel cp; - - BT_DBG("%p", conn); - - if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) - return; - - bacpy(&cp.bdaddr, &conn->dst); - hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp); -} - -void hci_acl_disconn(struct hci_conn *conn, __u8 reason) -{ - struct hci_cp_disconnect cp; - - BT_DBG("%p", conn); - - conn->state = BT_DISCONN; - - cp.handle = cpu_to_le16(conn->handle); - cp.reason = reason; - hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); -} - -void hci_add_sco(struct hci_conn *conn, __u16 handle) -{ - struct hci_dev *hdev = conn->hdev; - struct hci_cp_add_sco cp; - - BT_DBG("%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); -} - -void hci_setup_sync(struct hci_conn *conn, __u16 handle) -{ - struct hci_dev *hdev = conn->hdev; - struct hci_cp_setup_sync_conn cp; - - BT_DBG("%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); - - cp.tx_bandwidth = cpu_to_le32(0x00001f40); - cp.rx_bandwidth = cpu_to_le32(0x00001f40); - cp.max_latency = cpu_to_le16(0xffff); - cp.voice_setting = cpu_to_le16(hdev->voice_setting); - cp.retrans_effort = 0xff; - - hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp); -} - -void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, - u16 latency, u16 to_multiplier) -{ - struct hci_cp_le_conn_update cp; - struct hci_dev *hdev = conn->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(0x0001); - cp.max_ce_len = cpu_to_le16(0x0001); - - hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); -} -EXPORT_SYMBOL(hci_le_conn_update); - -void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], - __u8 ltk[16]) -{ - struct hci_dev *hdev = conn->hdev; - struct hci_cp_le_start_enc cp; - - BT_DBG("%p", conn); - - memset(&cp, 0, sizeof(cp)); - - cp.handle = cpu_to_le16(conn->handle); - memcpy(cp.ltk, ltk, sizeof(cp.ltk)); - cp.ediv = ediv; - memcpy(cp.rand, rand, sizeof(cp.rand)); - - hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); -} -EXPORT_SYMBOL(hci_le_start_enc); - -void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]) -{ - struct hci_dev *hdev = conn->hdev; - struct hci_cp_le_ltk_reply cp; - - BT_DBG("%p", conn); - - memset(&cp, 0, sizeof(cp)); - - cp.handle = cpu_to_le16(conn->handle); - memcpy(cp.ltk, ltk, sizeof(ltk)); - - hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); -} -EXPORT_SYMBOL(hci_le_ltk_reply); - -void hci_le_ltk_neg_reply(struct hci_conn *conn) -{ - struct hci_dev *hdev = conn->hdev; - struct hci_cp_le_ltk_neg_reply cp; - - BT_DBG("%p", conn); - - memset(&cp, 0, sizeof(cp)); - - cp.handle = cpu_to_le16(conn->handle); - - hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(cp), &cp); -} - -/* Device _must_ be locked */ -void hci_sco_setup(struct hci_conn *conn, __u8 status) -{ - struct hci_conn *sco = conn->link; - - BT_DBG("%p", conn); - - if (!sco) - return; - - if (!status) { - if (lmp_esco_capable(conn->hdev)) - hci_setup_sync(sco, conn->handle); - else - hci_add_sco(sco, conn->handle); - } else { - hci_proto_connect_cfm(sco, status); - hci_conn_del(sco); - } -} - -static void hci_conn_timeout(struct work_struct *work) -{ - struct hci_conn *conn = container_of(work, struct hci_conn, - disc_work.work); - __u8 reason; - - BT_DBG("conn %p state %s", conn, state_to_string(conn->state)); - - if (atomic_read(&conn->refcnt)) - return; - - switch (conn->state) { - case BT_CONNECT: - case BT_CONNECT2: - if (conn->out) { - if (conn->type == ACL_LINK) - hci_acl_connect_cancel(conn); - else if (conn->type == LE_LINK) - hci_le_connect_cancel(conn); - } - break; - case BT_CONFIG: - case BT_CONNECTED: - reason = hci_proto_disconn_ind(conn); - hci_acl_disconn(conn, reason); - break; - default: - conn->state = BT_CLOSED; - break; - } -} - -/* Enter sniff mode */ -static void hci_conn_enter_sniff_mode(struct hci_conn *conn) -{ - struct hci_dev *hdev = conn->hdev; - - BT_DBG("conn %p mode %d", conn, conn->mode); - - if (test_bit(HCI_RAW, &hdev->flags)) - return; - - 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); - } -} - -static void hci_conn_idle(unsigned long arg) -{ - struct hci_conn *conn = (void *) arg; - - BT_DBG("conn %p mode %d", conn, conn->mode); - - hci_conn_enter_sniff_mode(conn); -} - -static void hci_conn_auto_accept(unsigned long arg) -{ - struct hci_conn *conn = (void *) arg; - struct hci_dev *hdev = conn->hdev; - - hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), - &conn->dst); -} - -struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) -{ - struct hci_conn *conn; - - BT_DBG("%s dst %s", hdev->name, batostr(dst)); - - conn = kzalloc(sizeof(struct hci_conn), GFP_KERNEL); - if (!conn) - return NULL; - - bacpy(&conn->dst, dst); - conn->hdev = hdev; - conn->type = type; - 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; - - set_bit(HCI_CONN_POWER_SAVE, &conn->flags); - conn->disc_timeout = HCI_DISCONN_TIMEOUT; - - switch (type) { - case ACL_LINK: - conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; - 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); - setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn); - setup_timer(&conn->auto_accept_timer, hci_conn_auto_accept, - (unsigned long) conn); - - 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); - - atomic_set(&conn->devref, 0); - - hci_conn_init_sysfs(conn); - - return conn; -} - -int hci_conn_del(struct hci_conn *conn) -{ - struct hci_dev *hdev = conn->hdev; - - BT_DBG("%s conn %p handle %d", hdev->name, conn, conn->handle); - - del_timer(&conn->idle_timer); - - cancel_delayed_work_sync(&conn->disc_work); - - del_timer(&conn->auto_accept_timer); - - 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) { - 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_put(acl); - } - } - - - hci_chan_list_flush(conn); - - hci_conn_hash_del(hdev, conn); - if (hdev->notify) - hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); - - skb_queue_purge(&conn->data_q); - - hci_conn_put_device(conn); - - hci_dev_put(hdev); - - if (conn->handle == 0) - kfree(conn); - - return 0; -} - -struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) -{ - int use_src = bacmp(src, BDADDR_ANY); - struct hci_dev *hdev = NULL, *d; - - BT_DBG("%s -> %s", batostr(src), batostr(dst)); - - read_lock(&hci_dev_list_lock); - - list_for_each_entry(d, &hci_dev_list, list) { - if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags)) - continue; - - /* Simple routing: - * No source address - find interface with bdaddr != dst - * Source address - find interface with bdaddr == src - */ - - if (use_src) { - if (!bacmp(&d->bdaddr, src)) { - hdev = d; break; - } - } else { - if (bacmp(&d->bdaddr, dst)) { - hdev = d; break; - } - } - } - - if (hdev) - hdev = hci_dev_hold(hdev); - - read_unlock(&hci_dev_list_lock); - return hdev; -} -EXPORT_SYMBOL(hci_get_route); - -/* Create SCO, ACL or LE connection. - * Device _must_ be locked */ -struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type) -{ - struct hci_conn *acl; - struct hci_conn *sco; - struct hci_conn *le; - - BT_DBG("%s dst %s", hdev->name, batostr(dst)); - - if (type == LE_LINK) { - struct adv_entry *entry; - - le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst); - if (le) - return ERR_PTR(-EBUSY); - - entry = hci_find_adv_entry(hdev, dst); - if (!entry) - return ERR_PTR(-EHOSTUNREACH); - - le = hci_conn_add(hdev, LE_LINK, dst); - if (!le) - return ERR_PTR(-ENOMEM); - - le->dst_type = entry->bdaddr_type; - - hci_le_connect(le); - - hci_conn_hold(le); - - return le; - } - - acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); - if (!acl) { - acl = hci_conn_add(hdev, ACL_LINK, dst); - if (!acl) - return ERR_PTR(-ENOMEM); - } - - hci_conn_hold(acl); - - if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { - acl->sec_level = BT_SECURITY_LOW; - acl->pending_sec_level = sec_level; - acl->auth_type = auth_type; - hci_acl_connect(acl); - } - - if (type == ACL_LINK) - return acl; - - sco = hci_conn_hash_lookup_ba(hdev, type, dst); - if (!sco) { - sco = hci_conn_add(hdev, type, dst); - if (!sco) { - hci_conn_put(acl); - return ERR_PTR(-ENOMEM); - } - } - - acl->link = sco; - sco->link = acl; - - hci_conn_hold(sco); - - if (acl->state == BT_CONNECTED && - (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { - set_bit(HCI_CONN_POWER_SAVE, &acl->flags); - hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); - - if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) { - /* defer SCO setup until mode change completed */ - set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags); - return sco; - } - - hci_sco_setup(acl, 0x00); - } - - return sco; -} -EXPORT_SYMBOL(hci_connect); - -/* Check link security requirement */ -int hci_conn_check_link_mode(struct hci_conn *conn) -{ - BT_DBG("conn %p", conn); - - if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT)) - return 0; - - return 1; -} -EXPORT_SYMBOL(hci_conn_check_link_mode); - -/* Authenticate remote device */ -static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) -{ - BT_DBG("conn %p", conn); - - if (conn->pending_sec_level > sec_level) - sec_level = conn->pending_sec_level; - - if (sec_level > conn->sec_level) - conn->pending_sec_level = sec_level; - else if (conn->link_mode & HCI_LM_AUTH) - return 1; - - /* Make sure we preserve an existing MITM requirement*/ - auth_type |= (conn->auth_type & 0x01); - - conn->auth_type = auth_type; - - if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { - struct hci_cp_auth_requested cp; - - /* encrypt must be pending if auth is also pending */ - set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); - - cp.handle = cpu_to_le16(conn->handle); - hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, - sizeof(cp), &cp); - if (conn->key_type != 0xff) - set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); - } - - return 0; -} - -/* Encrypt the the link */ -static void hci_conn_encrypt(struct hci_conn *conn) -{ - BT_DBG("conn %p", conn); - - if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { - struct hci_cp_set_conn_encrypt cp; - cp.handle = cpu_to_le16(conn->handle); - cp.encrypt = 0x01; - hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), - &cp); - } -} - -/* Enable security */ -int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) -{ - BT_DBG("conn %p", conn); - - /* For sdp we don't need the link key. */ - if (sec_level == BT_SECURITY_SDP) - return 1; - - /* For non 2.1 devices and low security level we don't need the link - key. */ - if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn)) - return 1; - - /* For other security levels we need the link key. */ - if (!(conn->link_mode & HCI_LM_AUTH)) - goto auth; - - /* An authenticated combination key has sufficient security for any - security level. */ - if (conn->key_type == HCI_LK_AUTH_COMBINATION) - goto encrypt; - - /* An unauthenticated combination key has sufficient security for - security level 1 and 2. */ - if (conn->key_type == HCI_LK_UNAUTH_COMBINATION && - (sec_level == BT_SECURITY_MEDIUM || - sec_level == BT_SECURITY_LOW)) - goto encrypt; - - /* A combination key has always sufficient security for the security - levels 1 or 2. High security level requires the combination key - is generated using maximum PIN code length (16). - For pre 2.1 units. */ - if (conn->key_type == HCI_LK_COMBINATION && - (sec_level != BT_SECURITY_HIGH || - conn->pin_length == 16)) - goto encrypt; - -auth: - if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) - return 0; - - if (!hci_conn_auth(conn, sec_level, auth_type)) - return 0; - -encrypt: - if (conn->link_mode & HCI_LM_ENCRYPT) - return 1; - - hci_conn_encrypt(conn); - return 0; -} -EXPORT_SYMBOL(hci_conn_security); - -/* Check secure link requirement */ -int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) -{ - BT_DBG("conn %p", conn); - - if (sec_level != BT_SECURITY_HIGH) - return 1; /* Accept if non-secure is required */ - - if (conn->sec_level == BT_SECURITY_HIGH) - return 1; - - return 0; /* Reject not secure link */ -} -EXPORT_SYMBOL(hci_conn_check_secure); - -/* Change link key */ -int hci_conn_change_link_key(struct hci_conn *conn) -{ - BT_DBG("conn %p", conn); - - if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { - struct hci_cp_change_conn_link_key cp; - cp.handle = cpu_to_le16(conn->handle); - hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, - sizeof(cp), &cp); - } - - return 0; -} -EXPORT_SYMBOL(hci_conn_change_link_key); - -/* Switch role */ -int hci_conn_switch_role(struct hci_conn *conn, __u8 role) -{ - BT_DBG("conn %p", conn); - - if (!role && conn->link_mode & HCI_LM_MASTER) - return 1; - - if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) { - struct hci_cp_switch_role cp; - bacpy(&cp.bdaddr, &conn->dst); - cp.role = role; - hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); - } - - return 0; -} -EXPORT_SYMBOL(hci_conn_switch_role); - -/* Enter active mode */ -void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active) -{ - struct hci_dev *hdev = conn->hdev; - - BT_DBG("conn %p mode %d", conn, conn->mode); - - if (test_bit(HCI_RAW, &hdev->flags)) - return; - - if (conn->mode != HCI_CM_SNIFF) - goto timer; - - if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active) - goto timer; - - if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { - struct hci_cp_exit_sniff_mode cp; - cp.handle = cpu_to_le16(conn->handle); - hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); - } - -timer: - if (hdev->idle_timeout > 0) - mod_timer(&conn->idle_timer, - jiffies + msecs_to_jiffies(hdev->idle_timeout)); -} - -/* Drop all connection on the device */ -void hci_conn_hash_flush(struct hci_dev *hdev) -{ - struct hci_conn_hash *h = &hdev->conn_hash; - struct hci_conn *c, *n; - - BT_DBG("hdev %s", hdev->name); - - list_for_each_entry_safe(c, n, &h->list, list) { - c->state = BT_CLOSED; - - hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); - hci_conn_del(c); - } -} - -/* Check pending connect attempts */ -void hci_conn_check_pending(struct hci_dev *hdev) -{ - struct hci_conn *conn; - - BT_DBG("hdev %s", hdev->name); - - hci_dev_lock(hdev); - - conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); - if (conn) - hci_acl_connect(conn); - - hci_dev_unlock(hdev); -} - -void hci_conn_hold_device(struct hci_conn *conn) -{ - atomic_inc(&conn->devref); -} -EXPORT_SYMBOL(hci_conn_hold_device); - -void hci_conn_put_device(struct hci_conn *conn) -{ - if (atomic_dec_and_test(&conn->devref)) - hci_conn_del_sysfs(conn); -} -EXPORT_SYMBOL(hci_conn_put_device); - -int hci_get_conn_list(void __user *arg) -{ - register struct hci_conn *c; - struct hci_conn_list_req req, *cl; - struct hci_conn_info *ci; - struct hci_dev *hdev; - int n = 0, size, err; - - if (copy_from_user(&req, arg, sizeof(req))) - return -EFAULT; - - if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) - return -EINVAL; - - size = sizeof(req) + req.conn_num * sizeof(*ci); - - cl = kmalloc(size, GFP_KERNEL); - if (!cl) - return -ENOMEM; - - hdev = hci_dev_get(req.dev_id); - if (!hdev) { - kfree(cl); - return -ENODEV; - } - - ci = cl->conn_info; - - hci_dev_lock(hdev); - list_for_each_entry(c, &hdev->conn_hash.list, list) { - bacpy(&(ci + n)->bdaddr, &c->dst); - (ci + n)->handle = c->handle; - (ci + n)->type = c->type; - (ci + n)->out = c->out; - (ci + n)->state = c->state; - (ci + n)->link_mode = c->link_mode; - if (++n >= req.conn_num) - break; - } - hci_dev_unlock(hdev); - - cl->dev_id = hdev->id; - cl->conn_num = n; - size = sizeof(req) + n * sizeof(*ci); - - hci_dev_put(hdev); - - err = copy_to_user(arg, cl, size); - kfree(cl); - - return err ? -EFAULT : 0; -} - -int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) -{ - struct hci_conn_info_req req; - struct hci_conn_info ci; - struct hci_conn *conn; - char __user *ptr = arg + sizeof(req); - - if (copy_from_user(&req, arg, sizeof(req))) - return -EFAULT; - - hci_dev_lock(hdev); - conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); - if (conn) { - bacpy(&ci.bdaddr, &conn->dst); - ci.handle = conn->handle; - ci.type = conn->type; - ci.out = conn->out; - ci.state = conn->state; - ci.link_mode = conn->link_mode; - } - hci_dev_unlock(hdev); - - if (!conn) - return -ENOENT; - - return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; -} - -int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) -{ - struct hci_auth_info_req req; - struct hci_conn *conn; - - if (copy_from_user(&req, arg, sizeof(req))) - return -EFAULT; - - hci_dev_lock(hdev); - conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); - if (conn) - req.type = conn->auth_type; - hci_dev_unlock(hdev); - - if (!conn) - return -ENOENT; - - return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; -} - -struct hci_chan *hci_chan_create(struct hci_conn *conn) -{ - struct hci_dev *hdev = conn->hdev; - struct hci_chan *chan; - - BT_DBG("%s conn %p", hdev->name, conn); - - chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL); - if (!chan) - return NULL; - - chan->conn = conn; - skb_queue_head_init(&chan->data_q); - - list_add_rcu(&chan->list, &conn->chan_list); - - return chan; -} - -int hci_chan_del(struct hci_chan *chan) -{ - struct hci_conn *conn = chan->conn; - struct hci_dev *hdev = conn->hdev; - - BT_DBG("%s conn %p chan %p", hdev->name, conn, chan); - - list_del_rcu(&chan->list); - - synchronize_rcu(); - - skb_queue_purge(&chan->data_q); - kfree(chan); - - return 0; -} - -void hci_chan_list_flush(struct hci_conn *conn) -{ - struct hci_chan *chan, *n; - - BT_DBG("conn %p", conn); - - list_for_each_entry_safe(chan, n, &conn->chan_list, list) - hci_chan_del(chan); -} |