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Bluetooth: Add mgmt_pair_device command 

This patch adds a new mgmt_pair_device which can be used to initiate a
dedicated bonding procedure. Some extra callbacks are added to the
hci_conn struct so that the pairing code can get notified of the
completion of the procedure.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Johan Hedberg 2011-02-19 12:05:56 -03:00 committed by Gustavo F. Padovan
parent 366a033698
commit e9a416b5ce
3 changed files with 161 additions and 0 deletions
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16
include/net/bluetooth/hci_core.h
View File

@ -248,6 +248,10 @@ struct hci_conn {
void *priv;
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);
};
extern struct hci_proto *hci_proto[];
@ -571,6 +575,9 @@ static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
hp = hci_proto[HCI_PROTO_SCO];
if (hp && hp->connect_cfm)
hp->connect_cfm(conn, status);
if (conn->connect_cfm_cb)
conn->connect_cfm_cb(conn, status);
}
static inline int hci_proto_disconn_ind(struct hci_conn *conn)
@ -600,6 +607,9 @@ static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
hp = hci_proto[HCI_PROTO_SCO];
if (hp && hp->disconn_cfm)
hp->disconn_cfm(conn, reason);
if (conn->disconn_cfm_cb)
conn->disconn_cfm_cb(conn, reason);
}
static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
@ -619,6 +629,9 @@ static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
hp = hci_proto[HCI_PROTO_SCO];
if (hp && hp->security_cfm)
hp->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)
@ -632,6 +645,9 @@ static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u
hp = hci_proto[HCI_PROTO_SCO];
if (hp && hp->security_cfm)
hp->security_cfm(conn, status, encrypt);
if (conn->security_cfm_cb)
conn->security_cfm_cb(conn, status);
}
int hci_register_proto(struct hci_proto *hproto);

12
include/net/bluetooth/mgmt.h
View File

@ -160,6 +160,18 @@ struct mgmt_cp_set_io_capability {
__u8 io_capability;
} __packed;
#define MGMT_OP_PAIR_DEVICE 0x0014
struct mgmt_cp_pair_device {
__le16 index;
bdaddr_t bdaddr;
__u8 io_cap;
} __packed;
struct mgmt_rp_pair_device {
__le16 index;
bdaddr_t bdaddr;
__u8 status;
} __packed;
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;

133
net/bluetooth/mgmt.c
View File

@ -38,6 +38,7 @@ struct pending_cmd {
int index;
void *cmd;
struct sock *sk;
void *user_data;
};
LIST_HEAD(cmd_list);
@ -1063,6 +1064,135 @@ static int set_io_capability(struct sock *sk, unsigned char *data, u16 len)
&dev_id, sizeof(dev_id));
}
static inline struct pending_cmd *find_pairing(struct hci_conn *conn)
{
struct hci_dev *hdev = conn->hdev;
struct list_head *p;
list_for_each(p, &cmd_list) {
struct pending_cmd *cmd;
cmd = list_entry(p, struct pending_cmd, list);
if (cmd->opcode != MGMT_OP_PAIR_DEVICE)
continue;
if (cmd->index != hdev->id)
continue;
if (cmd->user_data != conn)
continue;
return cmd;
}
return NULL;
}
static void pairing_complete(struct pending_cmd *cmd, u8 status)
{
struct mgmt_rp_pair_device rp;
struct hci_conn *conn = cmd->user_data;
rp.index = cmd->index;
bacpy(&rp.bdaddr, &conn->dst);
rp.status = status;
cmd_complete(cmd->sk, MGMT_OP_PAIR_DEVICE, &rp, sizeof(rp));
/* So we don't get further callbacks for this connection */
conn->connect_cfm_cb = NULL;
conn->security_cfm_cb = NULL;
conn->disconn_cfm_cb = NULL;
hci_conn_put(conn);
list_del(&cmd->list);
mgmt_pending_free(cmd);
}
static void pairing_complete_cb(struct hci_conn *conn, u8 status)
{
struct pending_cmd *cmd;
BT_DBG("status %u", status);
cmd = find_pairing(conn);
if (!cmd) {
BT_DBG("Unable to find a pending command");
return;
}
pairing_complete(cmd, status);
}
static int pair_device(struct sock *sk, unsigned char *data, u16 len)
{
struct hci_dev *hdev;
struct mgmt_cp_pair_device *cp;
struct pending_cmd *cmd;
u8 sec_level, auth_type;
struct hci_conn *conn;
u16 dev_id;
int err;
BT_DBG("");
cp = (void *) data;
dev_id = get_unaligned_le16(&cp->index);
hdev = hci_dev_get(dev_id);
if (!hdev)
return cmd_status(sk, MGMT_OP_PAIR_DEVICE, ENODEV);
hci_dev_lock_bh(hdev);
if (cp->io_cap == 0x03) {
sec_level = BT_SECURITY_MEDIUM;
auth_type = HCI_AT_DEDICATED_BONDING;
} else {
sec_level = BT_SECURITY_HIGH;
auth_type = HCI_AT_DEDICATED_BONDING_MITM;
}
conn = hci_connect(hdev, ACL_LINK, &cp->bdaddr, sec_level, auth_type);
if (!conn) {
err = -ENOMEM;
goto unlock;
}
if (conn->connect_cfm_cb) {
hci_conn_put(conn);
err = cmd_status(sk, MGMT_OP_PAIR_DEVICE, EBUSY);
goto unlock;
}
cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, dev_id, data, len);
if (!cmd) {
err = -ENOMEM;
hci_conn_put(conn);
goto unlock;
}
conn->connect_cfm_cb = pairing_complete_cb;
conn->security_cfm_cb = pairing_complete_cb;
conn->disconn_cfm_cb = pairing_complete_cb;
conn->io_capability = cp->io_cap;
cmd->user_data = conn;
if (conn->state == BT_CONNECTED &&
hci_conn_security(conn, sec_level, auth_type))
pairing_complete(cmd, 0);
err = 0;
unlock:
hci_dev_unlock_bh(hdev);
hci_dev_put(hdev);
return err;
}
int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
{
unsigned char *buf;
@ -1148,6 +1278,9 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
case MGMT_OP_SET_IO_CAPABILITY:
err = set_io_capability(sk, buf + sizeof(*hdr), len);
break;
case MGMT_OP_PAIR_DEVICE:
err = pair_device(sk, buf + sizeof(*hdr), len);
break;
default:
BT_DBG("Unknown op %u", opcode);
err = cmd_status(sk, opcode, 0x01);