| /* |
| 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. |
| */ |
| |
| #ifndef __HCI_CORE_H |
| #define __HCI_CORE_H |
| |
| #include <net/bluetooth/hci.h> |
| |
| /* HCI priority */ |
| #define HCI_PRIO_MAX 7 |
| |
| /* HCI Core structures */ |
| struct inquiry_data { |
| bdaddr_t bdaddr; |
| __u8 pscan_rep_mode; |
| __u8 pscan_period_mode; |
| __u8 pscan_mode; |
| __u8 dev_class[3]; |
| __le16 clock_offset; |
| __s8 rssi; |
| __u8 ssp_mode; |
| }; |
| |
| struct inquiry_entry { |
| struct list_head all; /* inq_cache.all */ |
| struct list_head list; /* unknown or resolve */ |
| enum { |
| NAME_NOT_KNOWN, |
| NAME_NEEDED, |
| NAME_PENDING, |
| NAME_KNOWN, |
| } name_state; |
| __u32 timestamp; |
| struct inquiry_data data; |
| }; |
| |
| struct discovery_state { |
| int type; |
| enum { |
| DISCOVERY_STOPPED, |
| DISCOVERY_STARTING, |
| DISCOVERY_FINDING, |
| DISCOVERY_RESOLVING, |
| DISCOVERY_STOPPING, |
| } state; |
| struct list_head all; /* All devices found during inquiry */ |
| struct list_head unknown; /* Name state not known */ |
| struct list_head resolve; /* Name needs to be resolved */ |
| __u32 timestamp; |
| }; |
| |
| struct hci_conn_hash { |
| struct list_head list; |
| unsigned int acl_num; |
| unsigned int amp_num; |
| unsigned int sco_num; |
| unsigned int le_num; |
| }; |
| |
| struct bdaddr_list { |
| struct list_head list; |
| bdaddr_t bdaddr; |
| u8 bdaddr_type; |
| }; |
| |
| struct bt_uuid { |
| struct list_head list; |
| u8 uuid[16]; |
| u8 size; |
| u8 svc_hint; |
| }; |
| |
| struct smp_ltk { |
| struct list_head list; |
| bdaddr_t bdaddr; |
| u8 bdaddr_type; |
| u8 authenticated; |
| u8 type; |
| u8 enc_size; |
| __le16 ediv; |
| u8 rand[8]; |
| u8 val[16]; |
| } __packed; |
| |
| struct link_key { |
| struct list_head list; |
| bdaddr_t bdaddr; |
| u8 type; |
| u8 val[HCI_LINK_KEY_SIZE]; |
| u8 pin_len; |
| }; |
| |
| struct oob_data { |
| struct list_head list; |
| bdaddr_t bdaddr; |
| u8 hash[16]; |
| u8 randomizer[16]; |
| }; |
| |
| #define HCI_MAX_SHORT_NAME_LENGTH 10 |
| |
| struct amp_assoc { |
| __u16 len; |
| __u16 offset; |
| __u16 rem_len; |
| __u16 len_so_far; |
| __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; |
| }; |
| |
| #define HCI_MAX_PAGES 3 |
| |
| #define NUM_REASSEMBLY 4 |
| struct hci_dev { |
| struct list_head list; |
| struct mutex lock; |
| |
| char name[8]; |
| unsigned long flags; |
| __u16 id; |
| __u8 bus; |
| __u8 dev_type; |
| bdaddr_t bdaddr; |
| bdaddr_t static_addr; |
| __u8 own_addr_type; |
| __u8 dev_name[HCI_MAX_NAME_LENGTH]; |
| __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; |
| __u8 eir[HCI_MAX_EIR_LENGTH]; |
| __u8 dev_class[3]; |
| __u8 major_class; |
| __u8 minor_class; |
| __u8 max_page; |
| __u8 features[HCI_MAX_PAGES][8]; |
| __u8 le_features[8]; |
| __u8 le_white_list_size; |
| __u8 le_states[8]; |
| __u8 commands[64]; |
| __u8 hci_ver; |
| __u16 hci_rev; |
| __u8 lmp_ver; |
| __u16 manufacturer; |
| __u16 lmp_subver; |
| __u16 voice_setting; |
| __u8 num_iac; |
| __u8 io_capability; |
| __s8 inq_tx_power; |
| __u16 page_scan_interval; |
| __u16 page_scan_window; |
| __u8 page_scan_type; |
| __u16 le_scan_interval; |
| __u16 le_scan_window; |
| __u16 le_conn_min_interval; |
| __u16 le_conn_max_interval; |
| __u8 ssp_debug_mode; |
| |
| __u16 devid_source; |
| __u16 devid_vendor; |
| __u16 devid_product; |
| __u16 devid_version; |
| |
| __u16 pkt_type; |
| __u16 esco_type; |
| __u16 link_policy; |
| __u16 link_mode; |
| |
| __u32 idle_timeout; |
| __u16 sniff_min_interval; |
| __u16 sniff_max_interval; |
| |
| __u8 amp_status; |
| __u32 amp_total_bw; |
| __u32 amp_max_bw; |
| __u32 amp_min_latency; |
| __u32 amp_max_pdu; |
| __u8 amp_type; |
| __u16 amp_pal_cap; |
| __u16 amp_assoc_size; |
| __u32 amp_max_flush_to; |
| __u32 amp_be_flush_to; |
| |
| struct amp_assoc loc_assoc; |
| |
| __u8 flow_ctl_mode; |
| |
| unsigned int auto_accept_delay; |
| |
| unsigned long quirks; |
| |
| atomic_t cmd_cnt; |
| unsigned int acl_cnt; |
| unsigned int sco_cnt; |
| unsigned int le_cnt; |
| |
| unsigned int acl_mtu; |
| unsigned int sco_mtu; |
| unsigned int le_mtu; |
| unsigned int acl_pkts; |
| unsigned int sco_pkts; |
| unsigned int le_pkts; |
| |
| __u16 block_len; |
| __u16 block_mtu; |
| __u16 num_blocks; |
| __u16 block_cnt; |
| |
| unsigned long acl_last_tx; |
| unsigned long sco_last_tx; |
| unsigned long le_last_tx; |
| |
| struct workqueue_struct *workqueue; |
| struct workqueue_struct *req_workqueue; |
| |
| struct work_struct power_on; |
| struct delayed_work power_off; |
| |
| __u16 discov_timeout; |
| struct delayed_work discov_off; |
| |
| struct delayed_work service_cache; |
| |
| struct timer_list cmd_timer; |
| |
| struct work_struct rx_work; |
| struct work_struct cmd_work; |
| struct work_struct tx_work; |
| |
| struct sk_buff_head rx_q; |
| struct sk_buff_head raw_q; |
| struct sk_buff_head cmd_q; |
| |
| struct sk_buff *recv_evt; |
| struct sk_buff *sent_cmd; |
| struct sk_buff *reassembly[NUM_REASSEMBLY]; |
| |
| struct mutex req_lock; |
| wait_queue_head_t req_wait_q; |
| __u32 req_status; |
| __u32 req_result; |
| |
| struct list_head mgmt_pending; |
| |
| struct discovery_state discovery; |
| struct hci_conn_hash conn_hash; |
| struct list_head blacklist; |
| |
| struct list_head uuids; |
| |
| struct list_head link_keys; |
| |
| struct list_head long_term_keys; |
| |
| struct list_head remote_oob_data; |
| |
| struct hci_dev_stats stat; |
| |
| atomic_t promisc; |
| |
| struct dentry *debugfs; |
| |
| struct device dev; |
| |
| struct rfkill *rfkill; |
| |
| unsigned long dev_flags; |
| |
| struct delayed_work le_scan_disable; |
| |
| __s8 adv_tx_power; |
| __u8 adv_data[HCI_MAX_AD_LENGTH]; |
| __u8 adv_data_len; |
| __u8 scan_rsp_data[HCI_MAX_AD_LENGTH]; |
| __u8 scan_rsp_data_len; |
| |
| int (*open)(struct hci_dev *hdev); |
| int (*close)(struct hci_dev *hdev); |
| int (*flush)(struct hci_dev *hdev); |
| int (*setup)(struct hci_dev *hdev); |
| int (*send)(struct hci_dev *hdev, struct sk_buff *skb); |
| void (*notify)(struct hci_dev *hdev, unsigned int evt); |
| }; |
| |
| #define HCI_PHY_HANDLE(handle) (handle & 0xff) |
| |
| struct hci_conn { |
| struct list_head list; |
| |
| atomic_t refcnt; |
| |
| bdaddr_t dst; |
| __u8 dst_type; |
| bdaddr_t src; |
| __u8 src_type; |
| __u16 handle; |
| __u16 state; |
| __u8 mode; |
| __u8 type; |
| bool out; |
| __u8 attempt; |
| __u8 dev_class[3]; |
| __u8 features[HCI_MAX_PAGES][8]; |
| __u16 pkt_type; |
| __u16 link_policy; |
| __u32 link_mode; |
| __u8 key_type; |
| __u8 auth_type; |
| __u8 sec_level; |
| __u8 pending_sec_level; |
| __u8 pin_length; |
| __u8 enc_key_size; |
| __u8 io_capability; |
| __u32 passkey_notify; |
| __u8 passkey_entered; |
| __u16 disc_timeout; |
| __u16 setting; |
| unsigned long flags; |
| |
| __u8 remote_cap; |
| __u8 remote_auth; |
| __u8 remote_id; |
| bool flush_key; |
| |
| unsigned int sent; |
| |
| struct sk_buff_head data_q; |
| struct list_head chan_list; |
| |
| struct delayed_work disc_work; |
| struct delayed_work auto_accept_work; |
| struct delayed_work idle_work; |
| |
| struct device dev; |
| |
| struct hci_dev *hdev; |
| void *l2cap_data; |
| void *sco_data; |
| void *smp_conn; |
| struct amp_mgr *amp_mgr; |
| |
| struct hci_conn *link; |
| |
| void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); |
| void (*security_cfm_cb) (struct hci_conn *conn, u8 status); |
| void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); |
| }; |
| |
| struct hci_chan { |
| struct list_head list; |
| __u16 handle; |
| struct hci_conn *conn; |
| struct sk_buff_head data_q; |
| unsigned int sent; |
| __u8 state; |
| }; |
| |
| extern struct list_head hci_dev_list; |
| extern struct list_head hci_cb_list; |
| extern rwlock_t hci_dev_list_lock; |
| extern rwlock_t hci_cb_list_lock; |
| |
| /* ----- HCI interface to upper protocols ----- */ |
| int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); |
| void l2cap_connect_cfm(struct hci_conn *hcon, u8 status); |
| int l2cap_disconn_ind(struct hci_conn *hcon); |
| void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason); |
| int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt); |
| int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); |
| |
| int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); |
| void sco_connect_cfm(struct hci_conn *hcon, __u8 status); |
| void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason); |
| int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); |
| |
| /* ----- Inquiry cache ----- */ |
| #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ |
| #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ |
| |
| static inline void discovery_init(struct hci_dev *hdev) |
| { |
| hdev->discovery.state = DISCOVERY_STOPPED; |
| INIT_LIST_HEAD(&hdev->discovery.all); |
| INIT_LIST_HEAD(&hdev->discovery.unknown); |
| INIT_LIST_HEAD(&hdev->discovery.resolve); |
| } |
| |
| bool hci_discovery_active(struct hci_dev *hdev); |
| |
| void hci_discovery_set_state(struct hci_dev *hdev, int state); |
| |
| static inline int inquiry_cache_empty(struct hci_dev *hdev) |
| { |
| return list_empty(&hdev->discovery.all); |
| } |
| |
| static inline long inquiry_cache_age(struct hci_dev *hdev) |
| { |
| struct discovery_state *c = &hdev->discovery; |
| return jiffies - c->timestamp; |
| } |
| |
| static inline long inquiry_entry_age(struct inquiry_entry *e) |
| { |
| return jiffies - e->timestamp; |
| } |
| |
| struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
| bdaddr_t *bdaddr); |
| struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, |
| bdaddr_t *bdaddr); |
| struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
| bdaddr_t *bdaddr, |
| int state); |
| void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
| struct inquiry_entry *ie); |
| bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
| bool name_known, bool *ssp); |
| void hci_inquiry_cache_flush(struct hci_dev *hdev); |
| |
| /* ----- HCI Connections ----- */ |
| enum { |
| HCI_CONN_AUTH_PEND, |
| HCI_CONN_REAUTH_PEND, |
| HCI_CONN_ENCRYPT_PEND, |
| HCI_CONN_RSWITCH_PEND, |
| HCI_CONN_MODE_CHANGE_PEND, |
| HCI_CONN_SCO_SETUP_PEND, |
| HCI_CONN_LE_SMP_PEND, |
| HCI_CONN_MGMT_CONNECTED, |
| HCI_CONN_SSP_ENABLED, |
| HCI_CONN_POWER_SAVE, |
| HCI_CONN_REMOTE_OOB, |
| HCI_CONN_6LOWPAN, |
| }; |
| |
| static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) |
| { |
| struct hci_dev *hdev = conn->hdev; |
| return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && |
| test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); |
| } |
| |
| static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) |
| { |
| struct hci_conn_hash *h = &hdev->conn_hash; |
| list_add_rcu(&c->list, &h->list); |
| switch (c->type) { |
| case ACL_LINK: |
| h->acl_num++; |
| break; |
| case AMP_LINK: |
| h->amp_num++; |
| break; |
| case LE_LINK: |
| h->le_num++; |
| break; |
| case SCO_LINK: |
| case ESCO_LINK: |
| h->sco_num++; |
| break; |
| } |
| } |
| |
| static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) |
| { |
| struct hci_conn_hash *h = &hdev->conn_hash; |
| |
| list_del_rcu(&c->list); |
| synchronize_rcu(); |
| |
| switch (c->type) { |
| case ACL_LINK: |
| h->acl_num--; |
| break; |
| case AMP_LINK: |
| h->amp_num--; |
| break; |
| case LE_LINK: |
| h->le_num--; |
| break; |
| case SCO_LINK: |
| case ESCO_LINK: |
| h->sco_num--; |
| break; |
| } |
| } |
| |
| static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) |
| { |
| struct hci_conn_hash *h = &hdev->conn_hash; |
| switch (type) { |
| case ACL_LINK: |
| return h->acl_num; |
| case AMP_LINK: |
| return h->amp_num; |
| case LE_LINK: |
| return h->le_num; |
| case SCO_LINK: |
| case ESCO_LINK: |
| return h->sco_num; |
| default: |
| return 0; |
| } |
| } |
| |
| static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, |
| __u16 handle) |
| { |
| struct hci_conn_hash *h = &hdev->conn_hash; |
| struct hci_conn *c; |
| |
| rcu_read_lock(); |
| |
| list_for_each_entry_rcu(c, &h->list, list) { |
| if (c->handle == handle) { |
| rcu_read_unlock(); |
| return c; |
| } |
| } |
| rcu_read_unlock(); |
| |
| return NULL; |
| } |
| |
| static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, |
| __u8 type, bdaddr_t *ba) |
| { |
| struct hci_conn_hash *h = &hdev->conn_hash; |
| struct hci_conn *c; |
| |
| rcu_read_lock(); |
| |
| list_for_each_entry_rcu(c, &h->list, list) { |
| if (c->type == type && !bacmp(&c->dst, ba)) { |
| rcu_read_unlock(); |
| return c; |
| } |
| } |
| |
| rcu_read_unlock(); |
| |
| return NULL; |
| } |
| |
| static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, |
| __u8 type, __u16 state) |
| { |
| struct hci_conn_hash *h = &hdev->conn_hash; |
| struct hci_conn *c; |
| |
| rcu_read_lock(); |
| |
| list_for_each_entry_rcu(c, &h->list, list) { |
| if (c->type == type && c->state == state) { |
| rcu_read_unlock(); |
| return c; |
| } |
| } |
| |
| rcu_read_unlock(); |
| |
| return NULL; |
| } |
| |
| void hci_disconnect(struct hci_conn *conn, __u8 reason); |
| bool hci_setup_sync(struct hci_conn *conn, __u16 handle); |
| void hci_sco_setup(struct hci_conn *conn, __u8 status); |
| |
| struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst); |
| int hci_conn_del(struct hci_conn *conn); |
| void hci_conn_hash_flush(struct hci_dev *hdev); |
| void hci_conn_check_pending(struct hci_dev *hdev); |
| |
| struct hci_chan *hci_chan_create(struct hci_conn *conn); |
| void hci_chan_del(struct hci_chan *chan); |
| void hci_chan_list_flush(struct hci_conn *conn); |
| struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); |
| |
| struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, |
| __u8 dst_type, __u8 sec_level, __u8 auth_type); |
| struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, |
| __u16 setting); |
| int hci_conn_check_link_mode(struct hci_conn *conn); |
| int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); |
| int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type); |
| int hci_conn_change_link_key(struct hci_conn *conn); |
| int hci_conn_switch_role(struct hci_conn *conn, __u8 role); |
| |
| void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); |
| |
| /* |
| * hci_conn_get() and hci_conn_put() are used to control the life-time of an |
| * "hci_conn" object. They do not guarantee that the hci_conn object is running, |
| * working or anything else. They just guarantee that the object is available |
| * and can be dereferenced. So you can use its locks, local variables and any |
| * other constant data. |
| * Before accessing runtime data, you _must_ lock the object and then check that |
| * it is still running. As soon as you release the locks, the connection might |
| * get dropped, though. |
| * |
| * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control |
| * how long the underlying connection is held. So every channel that runs on the |
| * hci_conn object calls this to prevent the connection from disappearing. As |
| * long as you hold a device, you must also guarantee that you have a valid |
| * reference to the device via hci_conn_get() (or the initial reference from |
| * hci_conn_add()). |
| * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't |
| * break because nobody cares for that. But this means, we cannot use |
| * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). |
| */ |
| |
| static inline void hci_conn_get(struct hci_conn *conn) |
| { |
| get_device(&conn->dev); |
| } |
| |
| static inline void hci_conn_put(struct hci_conn *conn) |
| { |
| put_device(&conn->dev); |
| } |
| |
| static inline void hci_conn_hold(struct hci_conn *conn) |
| { |
| BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); |
| |
| atomic_inc(&conn->refcnt); |
| cancel_delayed_work(&conn->disc_work); |
| } |
| |
| static inline void hci_conn_drop(struct hci_conn *conn) |
| { |
| BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); |
| |
| if (atomic_dec_and_test(&conn->refcnt)) { |
| unsigned long timeo; |
| |
| switch (conn->type) { |
| case ACL_LINK: |
| case LE_LINK: |
| cancel_delayed_work(&conn->idle_work); |
| if (conn->state == BT_CONNECTED) { |
| timeo = conn->disc_timeout; |
| if (!conn->out) |
| timeo *= 2; |
| } else { |
| timeo = msecs_to_jiffies(10); |
| } |
| break; |
| |
| case AMP_LINK: |
| timeo = conn->disc_timeout; |
| break; |
| |
| default: |
| timeo = msecs_to_jiffies(10); |
| break; |
| } |
| |
| cancel_delayed_work(&conn->disc_work); |
| queue_delayed_work(conn->hdev->workqueue, |
| &conn->disc_work, timeo); |
| } |
| } |
| |
| /* ----- HCI Devices ----- */ |
| static inline void hci_dev_put(struct hci_dev *d) |
| { |
| BT_DBG("%s orig refcnt %d", d->name, |
| atomic_read(&d->dev.kobj.kref.refcount)); |
| |
| put_device(&d->dev); |
| } |
| |
| static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) |
| { |
| BT_DBG("%s orig refcnt %d", d->name, |
| atomic_read(&d->dev.kobj.kref.refcount)); |
| |
| get_device(&d->dev); |
| return d; |
| } |
| |
| #define hci_dev_lock(d) mutex_lock(&d->lock) |
| #define hci_dev_unlock(d) mutex_unlock(&d->lock) |
| |
| #define to_hci_dev(d) container_of(d, struct hci_dev, dev) |
| #define to_hci_conn(c) container_of(c, struct hci_conn, dev) |
| |
| static inline void *hci_get_drvdata(struct hci_dev *hdev) |
| { |
| return dev_get_drvdata(&hdev->dev); |
| } |
| |
| static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) |
| { |
| dev_set_drvdata(&hdev->dev, data); |
| } |
| |
| struct hci_dev *hci_dev_get(int index); |
| struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src); |
| |
| struct hci_dev *hci_alloc_dev(void); |
| void hci_free_dev(struct hci_dev *hdev); |
| int hci_register_dev(struct hci_dev *hdev); |
| void hci_unregister_dev(struct hci_dev *hdev); |
| int hci_suspend_dev(struct hci_dev *hdev); |
| int hci_resume_dev(struct hci_dev *hdev); |
| int hci_dev_open(__u16 dev); |
| int hci_dev_close(__u16 dev); |
| int hci_dev_reset(__u16 dev); |
| int hci_dev_reset_stat(__u16 dev); |
| int hci_dev_cmd(unsigned int cmd, void __user *arg); |
| int hci_get_dev_list(void __user *arg); |
| int hci_get_dev_info(void __user *arg); |
| int hci_get_conn_list(void __user *arg); |
| int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); |
| int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); |
| int hci_inquiry(void __user *arg); |
| |
| struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, |
| bdaddr_t *bdaddr, u8 type); |
| int hci_blacklist_clear(struct hci_dev *hdev); |
| int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); |
| int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); |
| |
| int hci_uuids_clear(struct hci_dev *hdev); |
| |
| int hci_link_keys_clear(struct hci_dev *hdev); |
| struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); |
| int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
| bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len); |
| struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]); |
| int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
| int new_key, u8 authenticated, u8 tk[16], u8 enc_size, |
| __le16 ediv, u8 rand[8]); |
| struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 addr_type); |
| int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr); |
| int hci_smp_ltks_clear(struct hci_dev *hdev); |
| int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); |
| |
| int hci_remote_oob_data_clear(struct hci_dev *hdev); |
| struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
| bdaddr_t *bdaddr); |
| int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash, |
| u8 *randomizer); |
| int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr); |
| |
| void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); |
| |
| int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); |
| int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count); |
| int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count); |
| |
| void hci_init_sysfs(struct hci_dev *hdev); |
| void hci_conn_init_sysfs(struct hci_conn *conn); |
| void hci_conn_add_sysfs(struct hci_conn *conn); |
| void hci_conn_del_sysfs(struct hci_conn *conn); |
| |
| #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) |
| |
| /* ----- LMP capabilities ----- */ |
| #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) |
| #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) |
| #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) |
| #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) |
| #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) |
| #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) |
| #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) |
| #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) |
| #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) |
| #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) |
| #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) |
| #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) |
| #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) |
| #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) |
| #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) |
| #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) |
| #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) |
| #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) |
| #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) |
| |
| /* ----- Extended LMP capabilities ----- */ |
| #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER) |
| #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE) |
| #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) |
| #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) |
| |
| /* ----- Host capabilities ----- */ |
| #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) |
| #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) |
| #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) |
| |
| /* ----- HCI protocols ----- */ |
| #define HCI_PROTO_DEFER 0x01 |
| |
| static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| __u8 type, __u8 *flags) |
| { |
| switch (type) { |
| case ACL_LINK: |
| return l2cap_connect_ind(hdev, bdaddr); |
| |
| case SCO_LINK: |
| case ESCO_LINK: |
| return sco_connect_ind(hdev, bdaddr, flags); |
| |
| default: |
| BT_ERR("unknown link type %d", type); |
| return -EINVAL; |
| } |
| } |
| |
| static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status) |
| { |
| switch (conn->type) { |
| case ACL_LINK: |
| case LE_LINK: |
| l2cap_connect_cfm(conn, status); |
| break; |
| |
| case SCO_LINK: |
| case ESCO_LINK: |
| sco_connect_cfm(conn, status); |
| break; |
| |
| default: |
| BT_ERR("unknown link type %d", conn->type); |
| break; |
| } |
| |
| if (conn->connect_cfm_cb) |
| conn->connect_cfm_cb(conn, status); |
| } |
| |
| static inline int hci_proto_disconn_ind(struct hci_conn *conn) |
| { |
| if (conn->type != ACL_LINK && conn->type != LE_LINK) |
| return HCI_ERROR_REMOTE_USER_TERM; |
| |
| return l2cap_disconn_ind(conn); |
| } |
| |
| static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason) |
| { |
| switch (conn->type) { |
| case ACL_LINK: |
| case LE_LINK: |
| l2cap_disconn_cfm(conn, reason); |
| break; |
| |
| case SCO_LINK: |
| case ESCO_LINK: |
| sco_disconn_cfm(conn, reason); |
| break; |
| |
| /* L2CAP would be handled for BREDR chan */ |
| case AMP_LINK: |
| break; |
| |
| default: |
| BT_ERR("unknown link type %d", conn->type); |
| break; |
| } |
| |
| if (conn->disconn_cfm_cb) |
| conn->disconn_cfm_cb(conn, reason); |
| } |
| |
| static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status) |
| { |
| __u8 encrypt; |
| |
| if (conn->type != ACL_LINK && conn->type != LE_LINK) |
| return; |
| |
| if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
| return; |
| |
| encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; |
| l2cap_security_cfm(conn, status, encrypt); |
| |
| if (conn->security_cfm_cb) |
| conn->security_cfm_cb(conn, status); |
| } |
| |
| static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, |
| __u8 encrypt) |
| { |
| if (conn->type != ACL_LINK && conn->type != LE_LINK) |
| return; |
| |
| l2cap_security_cfm(conn, status, encrypt); |
| |
| if (conn->security_cfm_cb) |
| conn->security_cfm_cb(conn, status); |
| } |
| |
| /* ----- HCI callbacks ----- */ |
| struct hci_cb { |
| struct list_head list; |
| |
| char *name; |
| |
| void (*security_cfm) (struct hci_conn *conn, __u8 status, |
| __u8 encrypt); |
| void (*key_change_cfm) (struct hci_conn *conn, __u8 status); |
| void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); |
| }; |
| |
| static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) |
| { |
| struct hci_cb *cb; |
| __u8 encrypt; |
| |
| hci_proto_auth_cfm(conn, status); |
| |
| if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
| return; |
| |
| encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00; |
| |
| read_lock(&hci_cb_list_lock); |
| list_for_each_entry(cb, &hci_cb_list, list) { |
| if (cb->security_cfm) |
| cb->security_cfm(conn, status, encrypt); |
| } |
| read_unlock(&hci_cb_list_lock); |
| } |
| |
| static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, |
| __u8 encrypt) |
| { |
| struct hci_cb *cb; |
| |
| if (conn->sec_level == BT_SECURITY_SDP) |
| conn->sec_level = BT_SECURITY_LOW; |
| |
| if (conn->pending_sec_level > conn->sec_level) |
| conn->sec_level = conn->pending_sec_level; |
| |
| hci_proto_encrypt_cfm(conn, status, encrypt); |
| |
| read_lock(&hci_cb_list_lock); |
| list_for_each_entry(cb, &hci_cb_list, list) { |
| if (cb->security_cfm) |
| cb->security_cfm(conn, status, encrypt); |
| } |
| read_unlock(&hci_cb_list_lock); |
| } |
| |
| static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) |
| { |
| struct hci_cb *cb; |
| |
| read_lock(&hci_cb_list_lock); |
| list_for_each_entry(cb, &hci_cb_list, list) { |
| if (cb->key_change_cfm) |
| cb->key_change_cfm(conn, status); |
| } |
| read_unlock(&hci_cb_list_lock); |
| } |
| |
| static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, |
| __u8 role) |
| { |
| struct hci_cb *cb; |
| |
| read_lock(&hci_cb_list_lock); |
| list_for_each_entry(cb, &hci_cb_list, list) { |
| if (cb->role_switch_cfm) |
| cb->role_switch_cfm(conn, status, role); |
| } |
| read_unlock(&hci_cb_list_lock); |
| } |
| |
| static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type) |
| { |
| size_t parsed = 0; |
| |
| if (data_len < 2) |
| return false; |
| |
| while (parsed < data_len - 1) { |
| u8 field_len = data[0]; |
| |
| if (field_len == 0) |
| break; |
| |
| parsed += field_len + 1; |
| |
| if (parsed > data_len) |
| break; |
| |
| if (data[1] == type) |
| return true; |
| |
| data += field_len + 1; |
| } |
| |
| return false; |
| } |
| |
| int hci_register_cb(struct hci_cb *hcb); |
| int hci_unregister_cb(struct hci_cb *hcb); |
| |
| struct hci_request { |
| struct hci_dev *hdev; |
| struct sk_buff_head cmd_q; |
| |
| /* If something goes wrong when building the HCI request, the error |
| * value is stored in this field. |
| */ |
| int err; |
| }; |
| |
| void hci_req_init(struct hci_request *req, struct hci_dev *hdev); |
| int hci_req_run(struct hci_request *req, hci_req_complete_t complete); |
| void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
| const void *param); |
| void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
| const void *param, u8 event); |
| void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status); |
| |
| struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, |
| const void *param, u32 timeout); |
| struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
| const void *param, u8 event, u32 timeout); |
| |
| int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
| const void *param); |
| void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); |
| void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); |
| |
| void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); |
| |
| /* ----- HCI Sockets ----- */ |
| void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); |
| void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk); |
| void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); |
| |
| void hci_sock_dev_event(struct hci_dev *hdev, int event); |
| |
| /* Management interface */ |
| #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) |
| #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ |
| BIT(BDADDR_LE_RANDOM)) |
| #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ |
| BIT(BDADDR_LE_PUBLIC) | \ |
| BIT(BDADDR_LE_RANDOM)) |
| |
| /* These LE scan and inquiry parameters were chosen according to LE General |
| * Discovery Procedure specification. |
| */ |
| #define DISCOV_LE_SCAN_WIN 0x12 |
| #define DISCOV_LE_SCAN_INT 0x12 |
| #define DISCOV_LE_TIMEOUT msecs_to_jiffies(10240) |
| #define DISCOV_INTERLEAVED_TIMEOUT msecs_to_jiffies(5120) |
| #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 |
| #define DISCOV_BREDR_INQUIRY_LEN 0x08 |
| |
| int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len); |
| void mgmt_index_added(struct hci_dev *hdev); |
| void mgmt_index_removed(struct hci_dev *hdev); |
| void mgmt_set_powered_failed(struct hci_dev *hdev, int err); |
| int mgmt_powered(struct hci_dev *hdev, u8 powered); |
| void mgmt_discoverable_timeout(struct hci_dev *hdev); |
| void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable); |
| void mgmt_connectable(struct hci_dev *hdev, u8 connectable); |
| void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status); |
| void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, |
| bool persistent); |
| void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, |
| u8 addr_type, u32 flags, u8 *name, u8 name_len, |
| u8 *dev_class); |
| void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, u8 reason); |
| void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, u8 status); |
| void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, |
| u8 addr_type, u8 status); |
| void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); |
| void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 status); |
| void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 status); |
| int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, __le32 value, |
| u8 confirm_hint); |
| int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, u8 status); |
| int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, u8 status); |
| int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type); |
| int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, u8 status); |
| int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, u8 status); |
| int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, |
| u8 link_type, u8 addr_type, u32 passkey, |
| u8 entered); |
| void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, |
| u8 addr_type, u8 status); |
| void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); |
| void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status); |
| void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, |
| u8 status); |
| void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); |
| void mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash, |
| u8 *randomizer, u8 status); |
| void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, |
| u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name, |
| u8 ssp, u8 *eir, u16 eir_len); |
| void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, |
| u8 addr_type, s8 rssi, u8 *name, u8 name_len); |
| void mgmt_discovering(struct hci_dev *hdev, u8 discovering); |
| int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); |
| int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); |
| void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent); |
| void mgmt_reenable_advertising(struct hci_dev *hdev); |
| |
| /* HCI info for socket */ |
| #define hci_pi(sk) ((struct hci_pinfo *) sk) |
| |
| struct hci_pinfo { |
| struct bt_sock bt; |
| struct hci_dev *hdev; |
| struct hci_filter filter; |
| __u32 cmsg_mask; |
| unsigned short channel; |
| }; |
| |
| /* HCI security filter */ |
| #define HCI_SFLT_MAX_OGF 5 |
| |
| struct hci_sec_filter { |
| __u32 type_mask; |
| __u32 event_mask[2]; |
| __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; |
| }; |
| |
| /* ----- HCI requests ----- */ |
| #define HCI_REQ_DONE 0 |
| #define HCI_REQ_PEND 1 |
| #define HCI_REQ_CANCELED 2 |
| |
| #define hci_req_lock(d) mutex_lock(&d->req_lock) |
| #define hci_req_unlock(d) mutex_unlock(&d->req_lock) |
| |
| void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, |
| u16 latency, u16 to_multiplier); |
| void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], |
| __u8 ltk[16]); |
| |
| #define SCO_AIRMODE_MASK 0x0003 |
| #define SCO_AIRMODE_CVSD 0x0000 |
| #define SCO_AIRMODE_TRANSP 0x0003 |
| |
| #endif /* __HCI_CORE_H */ |