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Bluetooth: Move connection code to reduce number of ifdefs

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Gather SMP related code together so that it can be placed under
single blocks of ifdefs.

Change-Id: I3c2e71243b694e9984ae8e88025a6ead7969e020
Signed-off-by: Szymon Janc <ext.szymon.janc@tieto.com>
This commit is contained in:
Szymon Janc 2015-10-02 12:39:11 +02:00 • committed by Anas Nashif
commit 888fac8ac8
2 changed files with 69 additions and 75 deletions
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134
net/bluetooth/conn.c
View file

@ -133,6 +133,71 @@ void bt_conn_security_changed(struct bt_conn *conn)
}
}
}
int bt_conn_le_start_encryption(struct bt_conn *conn, uint64_t rand,
uint16_t ediv, const uint8_t *ltk)
{
struct bt_hci_cp_le_start_encryption *cp;
struct bt_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_START_ENCRYPTION, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = bt_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(conn->handle);
cp->rand = rand;
cp->ediv = ediv;
memcpy(cp->ltk, ltk, sizeof(cp->ltk));
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_START_ENCRYPTION, buf, NULL);
}
int bt_conn_security(struct bt_conn *conn, bt_security_t sec)
{
if (conn->state != BT_CONN_CONNECTED) {
return -ENOTCONN;
}
/* nothing to do */
if (conn->sec_level >= sec || conn->required_sec_level >= sec) {
return 0;
}
/* for now we only support legacy pairing */
if (sec > BT_SECURITY_HIGH) {
return -EINVAL;
}
conn->required_sec_level = sec;
#if defined(CONFIG_BLUETOOTH_CENTRAL)
if (conn->role == BT_HCI_ROLE_MASTER) {
struct bt_keys *keys;
keys = bt_keys_find(BT_KEYS_LTK, &conn->dst);
if (keys) {
if (sec > BT_SECURITY_MEDIUM &&
keys->type != BT_KEYS_AUTHENTICATED) {
return bt_smp_send_pairing_req(conn);
}
return bt_conn_le_start_encryption(conn, keys->ltk.rand,
keys->ltk.ediv,
keys->ltk.val);
}
return bt_smp_send_pairing_req(conn);
}
#endif /* CONFIG_BLUETOOTH_CENTRAL */
#if defined(CONFIG_BLUETOOTH_PERIPHERAL)
return bt_smp_send_security_req(conn);
#else
return -EIO;
#endif /* CONFIG_BLUETOOTH_PERIPHERAL */
}
#endif /* CONFIG_BLUETOOTH_SMP */
void bt_conn_cb_register(struct bt_conn_cb *cb)
@ -554,53 +619,6 @@ const bt_addr_le_t *bt_conn_get_dst(const struct bt_conn *conn)
return &conn->dst;
}
#if defined(CONFIG_BLUETOOTH_SMP)
int bt_conn_security(struct bt_conn *conn, bt_security_t sec)
{
if (conn->state != BT_CONN_CONNECTED) {
return -ENOTCONN;
}
/* nothing to do */
if (conn->sec_level >= sec || conn->required_sec_level >= sec) {
return 0;
}
/* for now we only support legacy pairing */
if (sec > BT_SECURITY_HIGH) {
return -EINVAL;
}
conn->required_sec_level = sec;
#if defined(CONFIG_BLUETOOTH_CENTRAL)
if (conn->role == BT_HCI_ROLE_MASTER) {
struct bt_keys *keys;
keys = bt_keys_find(BT_KEYS_LTK, &conn->dst);
if (keys) {
if (sec > BT_SECURITY_MEDIUM &&
keys->type != BT_KEYS_AUTHENTICATED) {
return bt_smp_send_pairing_req(conn);
}
return bt_conn_le_start_encryption(conn, keys->ltk.rand,
keys->ltk.ediv,
keys->ltk.val);
}
return bt_smp_send_pairing_req(conn);
}
#endif /* CONFIG_BLUETOOTH_CENTRAL */
#if defined(CONFIG_BLUETOOTH_PERIPHERAL)
return bt_smp_send_security_req(conn);
#else
return -EIO;
#endif /* CONFIG_BLUETOOTH_PERIPHERAL */
}
#endif /* CONFIG_BLUETOOTH_SMP */
void bt_conn_set_auto_conn(struct bt_conn *conn, bool auto_conn)
{
if (auto_conn) {
@ -710,28 +728,6 @@ struct bt_conn *bt_conn_create_le(const bt_addr_le_t *peer)
return conn;
}
#if defined(CONFIG_BLUETOOTH_SMP)
int bt_conn_le_start_encryption(struct bt_conn *conn, uint64_t rand,
uint16_t ediv, const uint8_t *ltk)
{
struct bt_hci_cp_le_start_encryption *cp;
struct bt_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_START_ENCRYPTION, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = bt_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(conn->handle);
cp->rand = rand;
cp->ediv = ediv;
memcpy(cp->ltk, ltk, sizeof(cp->ltk));
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_START_ENCRYPTION, buf, NULL);
}
#endif /* CONFIG_BLUETOOTH_SMP */
int bt_conn_le_conn_update(struct bt_conn *conn, uint16_t min, uint16_t max,
uint16_t latency, uint16_t timeout)
{

10
net/bluetooth/conn_internal.h
View file

@ -120,12 +120,6 @@ struct bt_conn *bt_conn_lookup_state(const bt_addr_le_t *peer,
/* Set connection object in certain state and perform action related to state */
void bt_conn_set_state(struct bt_conn *conn, bt_conn_state_t state);
#if defined(CONFIG_BLUETOOTH_SMP)
/* rand and ediv should be in BT order */
int bt_conn_le_start_encryption(struct bt_conn *conn, uint64_t rand,
uint16_t ediv, const uint8_t *ltk);
#endif /* CONFIG_BLUETOOTH_SMP */
int bt_conn_le_conn_update(struct bt_conn *conn, uint16_t min, uint16_t max,
uint16_t latency, uint16_t timeout);
@ -133,6 +127,10 @@ int bt_conn_le_conn_update(struct bt_conn *conn, uint16_t min, uint16_t max,
void bt_conn_connected(struct bt_conn *conn);
#if defined(CONFIG_BLUETOOTH_SMP)
/* rand and ediv should be in BT order */
int bt_conn_le_start_encryption(struct bt_conn *conn, uint64_t rand,
uint16_t ediv, const uint8_t *ltk);
/* Notify higher layers that RPA was resolved */
void bt_conn_identity_resolved(struct bt_conn *conn);