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net/bluetooth/hci_conn.c
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/* |
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BlueZ - Bluetooth protocol stack for Linux |
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Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. |
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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 |
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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 |
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
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SOFTWARE IS DISCLAIMED. */ /* Bluetooth HCI connection handling. */ |
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#include <linux/module.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/kernel.h> |
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#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> |
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#include <linux/uaccess.h> |
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#include <asm/unaligned.h> #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> |
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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 = 1; |
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conn->link_mode |= HCI_LM_MASTER; |
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conn->sec_level = BT_SECURITY_LOW; |
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memset(&cp, 0, sizeof(cp)); |
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cp.scan_interval = cpu_to_le16(0x0060); cp.scan_window = cpu_to_le16(0x0030); |
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bacpy(&cp.peer_addr, &conn->dst); |
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cp.peer_addr_type = conn->dst_type; |
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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); |
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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); } |
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void hci_acl_connect(struct hci_conn *conn) |
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{ struct hci_dev *hdev = conn->hdev; struct inquiry_entry *ie; struct hci_cp_create_conn cp; BT_DBG("%p", conn); conn->state = BT_CONNECT; |
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conn->out = 1; |
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conn->link_mode = HCI_LM_MASTER; |
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conn->attempt++; |
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conn->link_policy = hdev->link_policy; |
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memset(&cp, 0, sizeof(cp)); bacpy(&cp.bdaddr, &conn->dst); cp.pscan_rep_mode = 0x02; |
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ie = hci_inquiry_cache_lookup(hdev, &conn->dst); if (ie) { |
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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); } |
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memcpy(conn->dev_class, ie->data.dev_class, 3); |
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conn->ssp_mode = ie->data.ssp_mode; |
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} |
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cp.pkt_type = cpu_to_le16(conn->pkt_type); |
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if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
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cp.role_switch = 0x01; |
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else |
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cp.role_switch = 0x00; |
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|
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hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
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} |
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static void hci_acl_connect_cancel(struct hci_conn *conn) { struct hci_cp_create_conn_cancel cp; BT_DBG("%p", conn); |
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if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) |
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return; bacpy(&cp.bdaddr, &conn->dst); |
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hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp); |
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} |
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void hci_acl_disconn(struct hci_conn *conn, __u8 reason) { struct hci_cp_disconnect cp; BT_DBG("%p", conn); conn->state = BT_DISCONN; |
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cp.handle = cpu_to_le16(conn->handle); |
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cp.reason = reason; |
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hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
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} 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 = 1; |
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conn->attempt++; |
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cp.handle = cpu_to_le16(handle); |
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cp.pkt_type = cpu_to_le16(conn->pkt_type); |
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|
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hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
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} |
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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 = 1; |
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conn->attempt++; |
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cp.handle = cpu_to_le16(handle); |
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cp.pkt_type = cpu_to_le16(conn->pkt_type); |
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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); } |
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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); |
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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; |
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memcpy(cp.rand, rand, sizeof(cp.rand)); |
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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); } |
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/* 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); } } |
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static void hci_conn_timeout(struct work_struct *work) |
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{ |
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struct hci_conn *conn = container_of(work, struct hci_conn, disc_work.work); |
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struct hci_dev *hdev = conn->hdev; |
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__u8 reason; |
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BT_DBG("conn %p state %d", conn, conn->state); if (atomic_read(&conn->refcnt)) return; hci_dev_lock(hdev); |
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switch (conn->state) { case BT_CONNECT: |
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case BT_CONNECT2: |
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if (conn->out) { if (conn->type == ACL_LINK) hci_acl_connect_cancel(conn); else if (conn->type == LE_LINK) hci_le_connect_cancel(conn); } |
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break; |
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case BT_CONFIG: |
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case BT_CONNECTED: |
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reason = hci_proto_disconn_ind(conn); hci_acl_disconn(conn, reason); |
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break; default: |
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conn->state = BT_CLOSED; |
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break; } |
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hci_dev_unlock(hdev); |
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} |
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/* 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->pend)) { 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); } } |
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static void hci_conn_idle(unsigned long arg) |
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{ |
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struct hci_conn *conn = (void *) arg; BT_DBG("conn %p mode %d", conn, conn->mode); hci_conn_enter_sniff_mode(conn); |
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} |
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static void hci_conn_auto_accept(unsigned long arg) { struct hci_conn *conn = (void *) arg; struct hci_dev *hdev = conn->hdev; |
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hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), &conn->dst); |
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} |
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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)); |
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conn = kzalloc(sizeof(struct hci_conn), GFP_ATOMIC); if (!conn) |
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return NULL; |
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bacpy(&conn->dst, dst); |
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conn->hdev = hdev; conn->type = type; conn->mode = HCI_CM_ACTIVE; conn->state = BT_OPEN; |
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conn->auth_type = HCI_AT_GENERAL_BONDING; |
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conn->io_capability = hdev->io_capability; |
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conn->remote_auth = 0xff; |
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conn->key_type = 0xff; |
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|
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conn->power_save = 1; |
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conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
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switch (type) { case ACL_LINK: conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; break; case SCO_LINK: if (lmp_esco_capable(hdev)) |
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conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | (hdev->esco_type & EDR_ESCO_MASK); |
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else conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; break; case ESCO_LINK: |
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conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
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break; } |
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skb_queue_head_init(&conn->data_q); |
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INIT_LIST_HEAD(&conn->chan_list);; |
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INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
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setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn); |
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setup_timer(&conn->auto_accept_timer, hci_conn_auto_accept, (unsigned long) conn); |
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atomic_set(&conn->refcnt, 0); hci_dev_hold(hdev); |
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hci_conn_hash_add(hdev, conn); |
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if (hdev->notify) |
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hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); |
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atomic_set(&conn->devref, 0); |
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hci_conn_init_sysfs(conn); |
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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); |
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del_timer(&conn->idle_timer); |
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cancel_delayed_work_sync(&conn->disc_work); |
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del_timer(&conn->auto_accept_timer); |
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if (conn->type == ACL_LINK) { |
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struct hci_conn *sco = conn->link; if (sco) sco->link = NULL; /* Unacked frames */ hdev->acl_cnt += conn->sent; |
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} else if (conn->type == LE_LINK) { if (hdev->le_pkts) hdev->le_cnt += conn->sent; else hdev->acl_cnt += conn->sent; |
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} else { struct hci_conn *acl = conn->link; if (acl) { acl->link = NULL; hci_conn_put(acl); } |
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} |
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hci_chan_list_flush(conn); |
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hci_conn_hash_del(hdev, conn); |
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if (hdev->notify) |
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hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); |
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|
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skb_queue_purge(&conn->data_q); |
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hci_conn_put_device(conn); |
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hci_dev_put(hdev); |
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if (conn->handle == 0) kfree(conn); |
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return 0; } struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) { int use_src = bacmp(src, BDADDR_ANY); |
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struct hci_dev *hdev = NULL, *d; |
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BT_DBG("%s -> %s", batostr(src), batostr(dst)); |
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read_lock(&hci_dev_list_lock); |
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|
8035ded46 Bluetooth: replac... |
449 |
list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4c Linux-2.6.12-rc2 |
450 451 |
if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags)) continue; |
8e87d1425 [NET] BLUETOOTH: ... |
452 |
/* Simple routing: |
1da177e4c Linux-2.6.12-rc2 |
453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 |
* 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); |
f20d09d5f Bluetooth: remove... |
470 |
read_unlock(&hci_dev_list_lock); |
1da177e4c Linux-2.6.12-rc2 |
471 472 473 |
return hdev; } EXPORT_SYMBOL(hci_get_route); |
fcd89c09a Bluetooth: Add LE... |
474 |
/* Create SCO, ACL or LE connection. |
1da177e4c Linux-2.6.12-rc2 |
475 |
* Device _must_ be locked */ |
8c1b23559 Bluetooth: Add en... |
476 |
struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type) |
1da177e4c Linux-2.6.12-rc2 |
477 478 |
{ struct hci_conn *acl; |
5b7f99092 [Bluetooth] Add b... |
479 |
struct hci_conn *sco; |
fcd89c09a Bluetooth: Add LE... |
480 |
struct hci_conn *le; |
1da177e4c Linux-2.6.12-rc2 |
481 482 |
BT_DBG("%s dst %s", hdev->name, batostr(dst)); |
fcd89c09a Bluetooth: Add LE... |
483 |
if (type == LE_LINK) { |
eda42b503 Bluetooth: Check ... |
484 |
struct adv_entry *entry; |
fcd89c09a Bluetooth: Add LE... |
485 |
le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst); |
15c4794fe Bluetooth: Fix LE... |
486 |
if (le) |
30e762721 Bluetooth: Use ER... |
487 |
return ERR_PTR(-EBUSY); |
eda42b503 Bluetooth: Check ... |
488 489 490 491 |
entry = hci_find_adv_entry(hdev, dst); if (!entry) return ERR_PTR(-EHOSTUNREACH); |
15c4794fe Bluetooth: Fix LE... |
492 |
le = hci_conn_add(hdev, LE_LINK, dst); |
fcd89c09a Bluetooth: Add LE... |
493 |
if (!le) |
30e762721 Bluetooth: Use ER... |
494 |
return ERR_PTR(-ENOMEM); |
893d67514 Bluetooth: Remove... |
495 |
|
eda42b503 Bluetooth: Check ... |
496 |
le->dst_type = entry->bdaddr_type; |
893d67514 Bluetooth: Remove... |
497 |
hci_le_connect(le); |
fcd89c09a Bluetooth: Add LE... |
498 499 500 501 502 |
hci_conn_hold(le); return le; } |
70f23020e Bluetooth: clean ... |
503 504 505 506 |
acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); if (!acl) { acl = hci_conn_add(hdev, ACL_LINK, dst); if (!acl) |
1da177e4c Linux-2.6.12-rc2 |
507 508 509 510 |
return NULL; } hci_conn_hold(acl); |
09ab6f4c2 [Bluetooth] Enfor... |
511 |
if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
765c2a964 Bluetooth: Fix ra... |
512 513 |
acl->sec_level = BT_SECURITY_LOW; acl->pending_sec_level = sec_level; |
09ab6f4c2 [Bluetooth] Enfor... |
514 |
acl->auth_type = auth_type; |
1da177e4c Linux-2.6.12-rc2 |
515 |
hci_acl_connect(acl); |
09ab6f4c2 [Bluetooth] Enfor... |
516 |
} |
1da177e4c Linux-2.6.12-rc2 |
517 |
|
5b7f99092 [Bluetooth] Add b... |
518 519 |
if (type == ACL_LINK) return acl; |
1da177e4c Linux-2.6.12-rc2 |
520 |
|
70f23020e Bluetooth: clean ... |
521 522 523 524 |
sco = hci_conn_hash_lookup_ba(hdev, type, dst); if (!sco) { sco = hci_conn_add(hdev, type, dst); if (!sco) { |
5b7f99092 [Bluetooth] Add b... |
525 526 |
hci_conn_put(acl); return NULL; |
1da177e4c Linux-2.6.12-rc2 |
527 |
} |
5b7f99092 [Bluetooth] Add b... |
528 |
} |
1da177e4c Linux-2.6.12-rc2 |
529 |
|
5b7f99092 [Bluetooth] Add b... |
530 531 |
acl->link = sco; sco->link = acl; |
1da177e4c Linux-2.6.12-rc2 |
532 |
|
5b7f99092 [Bluetooth] Add b... |
533 |
hci_conn_hold(sco); |
1da177e4c Linux-2.6.12-rc2 |
534 |
|
5b7f99092 [Bluetooth] Add b... |
535 |
if (acl->state == BT_CONNECTED && |
b6a0dc822 [Bluetooth] Add s... |
536 |
(sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
c390216b3 Bluetooth: Enter ... |
537 |
acl->power_save = 1; |
14b12d0b9 Bluetooth: Add BT... |
538 |
hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
c390216b3 Bluetooth: Enter ... |
539 |
|
e73439d8c Bluetooth: Defer ... |
540 541 542 543 544 545 546 |
if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->pend)) { /* defer SCO setup until mode change completed */ set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->pend); return sco; } hci_sco_setup(acl, 0x00); |
b6a0dc822 [Bluetooth] Add s... |
547 |
} |
5b7f99092 [Bluetooth] Add b... |
548 549 |
return sco; |
1da177e4c Linux-2.6.12-rc2 |
550 551 |
} EXPORT_SYMBOL(hci_connect); |
e7c29cb16 [Bluetooth] Rejec... |
552 553 554 555 556 557 558 559 560 561 562 563 |
/* Check link security requirement */ int hci_conn_check_link_mode(struct hci_conn *conn) { BT_DBG("conn %p", conn); if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0 && !(conn->link_mode & HCI_LM_ENCRYPT)) return 0; return 1; } EXPORT_SYMBOL(hci_conn_check_link_mode); |
1da177e4c Linux-2.6.12-rc2 |
564 |
/* Authenticate remote device */ |
0684e5f9f Bluetooth: Use ge... |
565 |
static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
1da177e4c Linux-2.6.12-rc2 |
566 567 |
{ BT_DBG("conn %p", conn); |
765c2a964 Bluetooth: Fix ra... |
568 569 |
if (conn->pending_sec_level > sec_level) sec_level = conn->pending_sec_level; |
96a318332 Bluetooth: Set au... |
570 |
if (sec_level > conn->sec_level) |
765c2a964 Bluetooth: Fix ra... |
571 |
conn->pending_sec_level = sec_level; |
96a318332 Bluetooth: Set au... |
572 |
else if (conn->link_mode & HCI_LM_AUTH) |
1da177e4c Linux-2.6.12-rc2 |
573 |
return 1; |
65cf686ee Bluetooth: Fix MI... |
574 575 |
/* Make sure we preserve an existing MITM requirement*/ auth_type |= (conn->auth_type & 0x01); |
96a318332 Bluetooth: Set au... |
576 |
conn->auth_type = auth_type; |
1da177e4c Linux-2.6.12-rc2 |
577 578 |
if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { struct hci_cp_auth_requested cp; |
aca3192cc [NET] BLUETOOTH: ... |
579 |
cp.handle = cpu_to_le16(conn->handle); |
40be492fe [Bluetooth] Expor... |
580 581 |
hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); |
19f8def03 Bluetooth: Fix au... |
582 583 |
if (conn->key_type != 0xff) set_bit(HCI_CONN_REAUTH_PEND, &conn->pend); |
1da177e4c Linux-2.6.12-rc2 |
584 |
} |
8c1b23559 Bluetooth: Add en... |
585 |
|
1da177e4c Linux-2.6.12-rc2 |
586 587 |
return 0; } |
1da177e4c Linux-2.6.12-rc2 |
588 |
|
13d39315c Bluetooth: Map se... |
589 590 591 592 593 594 595 596 597 598 599 600 601 |
/* 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->pend)) { 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); } } |
8c1b23559 Bluetooth: Add en... |
602 |
/* Enable security */ |
0684e5f9f Bluetooth: Use ge... |
603 |
int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
1da177e4c Linux-2.6.12-rc2 |
604 605 |
{ BT_DBG("conn %p", conn); |
13d39315c Bluetooth: Map se... |
606 |
/* For sdp we don't need the link key. */ |
8c1b23559 Bluetooth: Add en... |
607 608 |
if (sec_level == BT_SECURITY_SDP) return 1; |
13d39315c Bluetooth: Map se... |
609 610 |
/* For non 2.1 devices and low security level we don't need the link key. */ |
3fdca1e13 Bluetooth: Fix co... |
611 612 613 |
if (sec_level == BT_SECURITY_LOW && (!conn->ssp_mode || !conn->hdev->ssp_mode)) return 1; |
8c1b23559 Bluetooth: Add en... |
614 |
|
13d39315c Bluetooth: Map se... |
615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 |
/* 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: |
d7660918f Revert "Bluetooth... |
641 |
if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) |
1da177e4c Linux-2.6.12-rc2 |
642 |
return 0; |
6fdf658c9 Bluetooth: Fix L2... |
643 644 |
if (!hci_conn_auth(conn, sec_level, auth_type)) return 0; |
13d39315c Bluetooth: Map se... |
645 646 647 648 |
encrypt: if (conn->link_mode & HCI_LM_ENCRYPT) return 1; |
8c1b23559 Bluetooth: Add en... |
649 |
|
13d39315c Bluetooth: Map se... |
650 |
hci_conn_encrypt(conn); |
1da177e4c Linux-2.6.12-rc2 |
651 652 |
return 0; } |
8c1b23559 Bluetooth: Add en... |
653 |
EXPORT_SYMBOL(hci_conn_security); |
1da177e4c Linux-2.6.12-rc2 |
654 |
|
b3b1b0615 Bluetooth: Double... |
655 656 657 658 659 660 661 |
/* 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 */ |
ef4177e2b Bluetooth: Simpli... |
662 |
if (conn->sec_level == BT_SECURITY_HIGH) |
b3b1b0615 Bluetooth: Double... |
663 664 665 666 667 |
return 1; return 0; /* Reject not secure link */ } EXPORT_SYMBOL(hci_conn_check_secure); |
1da177e4c Linux-2.6.12-rc2 |
668 669 670 671 672 673 674 |
/* 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->pend)) { struct hci_cp_change_conn_link_key cp; |
aca3192cc [NET] BLUETOOTH: ... |
675 |
cp.handle = cpu_to_le16(conn->handle); |
40be492fe [Bluetooth] Expor... |
676 677 |
hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, sizeof(cp), &cp); |
1da177e4c Linux-2.6.12-rc2 |
678 |
} |
8c1b23559 Bluetooth: Add en... |
679 |
|
1da177e4c Linux-2.6.12-rc2 |
680 681 682 683 684 |
return 0; } EXPORT_SYMBOL(hci_conn_change_link_key); /* Switch role */ |
8c1b23559 Bluetooth: Add en... |
685 |
int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
1da177e4c Linux-2.6.12-rc2 |
686 687 688 689 690 691 692 693 694 695 |
{ 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->pend)) { struct hci_cp_switch_role cp; bacpy(&cp.bdaddr, &conn->dst); cp.role = role; |
a9de92480 [Bluetooth] Switc... |
696 |
hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
1da177e4c Linux-2.6.12-rc2 |
697 |
} |
8c1b23559 Bluetooth: Add en... |
698 |
|
1da177e4c Linux-2.6.12-rc2 |
699 700 701 |
return 0; } EXPORT_SYMBOL(hci_conn_switch_role); |
04837f644 [Bluetooth] Add a... |
702 |
/* Enter active mode */ |
14b12d0b9 Bluetooth: Add BT... |
703 |
void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active) |
04837f644 [Bluetooth] Add a... |
704 705 706 707 708 709 710 |
{ struct hci_dev *hdev = conn->hdev; BT_DBG("conn %p mode %d", conn, conn->mode); if (test_bit(HCI_RAW, &hdev->flags)) return; |
14b12d0b9 Bluetooth: Add BT... |
711 712 713 714 |
if (conn->mode != HCI_CM_SNIFF) goto timer; if (!conn->power_save && !force_active) |
04837f644 [Bluetooth] Add a... |
715 716 717 718 |
goto timer; if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { struct hci_cp_exit_sniff_mode cp; |
aca3192cc [NET] BLUETOOTH: ... |
719 |
cp.handle = cpu_to_le16(conn->handle); |
a9de92480 [Bluetooth] Switc... |
720 |
hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
04837f644 [Bluetooth] Add a... |
721 722 723 724 725 726 727 |
} timer: if (hdev->idle_timeout > 0) mod_timer(&conn->idle_timer, jiffies + msecs_to_jiffies(hdev->idle_timeout)); } |
1da177e4c Linux-2.6.12-rc2 |
728 729 730 731 |
/* Drop all connection on the device */ void hci_conn_hash_flush(struct hci_dev *hdev) { struct hci_conn_hash *h = &hdev->conn_hash; |
3e9c40a6f Bluetooth: Use li... |
732 |
struct hci_conn *c; |
1da177e4c Linux-2.6.12-rc2 |
733 734 |
BT_DBG("hdev %s", hdev->name); |
bf4c63252 Bluetooth: conver... |
735 |
list_for_each_entry_rcu(c, &h->list, list) { |
1da177e4c Linux-2.6.12-rc2 |
736 |
c->state = BT_CLOSED; |
9f5a0d7bf Bluetooth: Define... |
737 |
hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); |
1da177e4c Linux-2.6.12-rc2 |
738 739 740 |
hci_conn_del(c); } } |
a9de92480 [Bluetooth] Switc... |
741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 |
/* 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); } |
9eba32b86 Bluetooth: Add ex... |
756 757 758 759 760 761 762 763 764 765 766 767 |
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); |
1da177e4c Linux-2.6.12-rc2 |
768 769 |
int hci_get_conn_list(void __user *arg) { |
8035ded46 Bluetooth: replac... |
770 |
register struct hci_conn *c; |
1da177e4c Linux-2.6.12-rc2 |
771 772 773 |
struct hci_conn_list_req req, *cl; struct hci_conn_info *ci; struct hci_dev *hdev; |
1da177e4c Linux-2.6.12-rc2 |
774 775 776 777 778 779 780 781 782 |
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); |
70f23020e Bluetooth: clean ... |
783 784 |
cl = kmalloc(size, GFP_KERNEL); if (!cl) |
1da177e4c Linux-2.6.12-rc2 |
785 |
return -ENOMEM; |
70f23020e Bluetooth: clean ... |
786 787 |
hdev = hci_dev_get(req.dev_id); if (!hdev) { |
1da177e4c Linux-2.6.12-rc2 |
788 789 790 791 792 |
kfree(cl); return -ENODEV; } ci = cl->conn_info; |
09fd0de5b Bluetooth: Replac... |
793 |
hci_dev_lock(hdev); |
8035ded46 Bluetooth: replac... |
794 |
list_for_each_entry(c, &hdev->conn_hash.list, list) { |
1da177e4c Linux-2.6.12-rc2 |
795 796 797 798 799 800 801 802 803 |
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; } |
09fd0de5b Bluetooth: Replac... |
804 |
hci_dev_unlock(hdev); |
1da177e4c Linux-2.6.12-rc2 |
805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 |
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; |
09fd0de5b Bluetooth: Replac... |
827 |
hci_dev_lock(hdev); |
1da177e4c Linux-2.6.12-rc2 |
828 829 830 831 832 833 834 835 836 |
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; } |
09fd0de5b Bluetooth: Replac... |
837 |
hci_dev_unlock(hdev); |
1da177e4c Linux-2.6.12-rc2 |
838 839 840 841 842 843 |
if (!conn) return -ENOENT; return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; } |
40be492fe [Bluetooth] Expor... |
844 845 846 847 848 849 850 851 |
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; |
09fd0de5b Bluetooth: Replac... |
852 |
hci_dev_lock(hdev); |
40be492fe [Bluetooth] Expor... |
853 854 855 |
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); if (conn) req.type = conn->auth_type; |
09fd0de5b Bluetooth: Replac... |
856 |
hci_dev_unlock(hdev); |
40be492fe [Bluetooth] Expor... |
857 858 859 860 861 862 |
if (!conn) return -ENOENT; return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; } |
73d80deb7 Bluetooth: priori... |
863 864 865 866 867 868 869 870 871 872 873 874 875 876 |
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_ATOMIC); if (!chan) return NULL; chan->conn = conn; skb_queue_head_init(&chan->data_q); |
8192edef0 Bluetooth: Use RC... |
877 |
list_add_rcu(&chan->list, &conn->chan_list); |
73d80deb7 Bluetooth: priori... |
878 879 880 881 882 883 884 885 886 887 |
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); |
8192edef0 Bluetooth: Use RC... |
888 889 890 |
list_del_rcu(&chan->list); synchronize_rcu(); |
73d80deb7 Bluetooth: priori... |
891 892 893 894 895 896 |
skb_queue_purge(&chan->data_q); kfree(chan); return 0; } |
2c33c06a8 Bluetooth: remove... |
897 |
void hci_chan_list_flush(struct hci_conn *conn) |
73d80deb7 Bluetooth: priori... |
898 |
{ |
8192edef0 Bluetooth: Use RC... |
899 |
struct hci_chan *chan; |
73d80deb7 Bluetooth: priori... |
900 901 |
BT_DBG("conn %p", conn); |
8192edef0 Bluetooth: Use RC... |
902 |
list_for_each_entry_rcu(chan, &conn->chan_list, list) |
73d80deb7 Bluetooth: priori... |
903 904 |
hci_chan_del(chan); } |