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Bluetooth: Host: Remove SCO security check

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Remove SCO security management code block.
Currently, security related checks are not
necessary. It can be added if needed.

Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>
This commit is contained in:
Lyle Zhu 2024-03-15 16:04:07 +08:00 committed by Alberto Escolar
parent faeb9bf681
commit 39162fd71a
3 changed files with 0 additions and 141 deletions
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123
subsys/bluetooth/host/classic/sco.c
View file

@ -241,8 +241,6 @@ static int sco_accept(struct bt_conn *acl, struct bt_conn *sco)
return -EINVAL;
}
chan->required_sec_level = sco_server->sec_level;
bt_sco_chan_add(sco, chan);
bt_sco_chan_set_state(chan, BT_SCO_STATE_CONNECTING);
@ -330,31 +328,6 @@ void bt_sco_cleanup_acl(struct bt_conn *sco)
}
}
static int sco_chan_connect_security(struct bt_conn *sco, struct bt_sco_chan *chan)
{
struct bt_conn *acl;
acl = sco->sco.acl;
if (acl->sec_level < chan->required_sec_level) {
int err;
err = bt_conn_set_security(acl, chan->required_sec_level);
if (err != 0) {
LOG_DBG("Failed to set security: %d", err);
/* Restore states */
bt_sco_cleanup_acl(sco);
bt_sco_chan_set_state(chan, BT_SCO_STATE_DISCONNECTED);
return err;
}
bt_sco_chan_set_state(chan, BT_SCO_STATE_ENCRYPT_PENDING);
}
return 0;
}
static int sco_setup_sync_conn(struct bt_conn *sco_conn)
{
struct net_buf *buf;
@ -421,15 +394,6 @@ struct bt_conn *bt_conn_create_sco(const bt_addr_t *peer, struct bt_sco_chan *ch
bt_conn_set_state(chan->sco, BT_CONN_CONNECTING);
bt_sco_chan_set_state(chan, BT_SCO_STATE_CONNECTING);
if (sco_chan_connect_security(sco_conn, chan) != 0) {
bt_sco_cleanup(sco_conn);
return NULL;
}
if (chan->state == BT_SCO_STATE_ENCRYPT_PENDING) {
return sco_conn;
}
if (sco_setup_sync_conn(sco_conn) < 0) {
bt_conn_set_state(chan->sco, BT_CONN_DISCONNECTED);
bt_sco_chan_set_state(chan, BT_SCO_STATE_DISCONNECTED);
@ -439,90 +403,3 @@ struct bt_conn *bt_conn_create_sco(const bt_addr_t *peer, struct bt_sco_chan *ch
return sco_conn;
}
struct sco_conns_scanning_data {
struct bt_conn *acl;
struct bt_conn *sco[CONFIG_BT_MAX_SCO_CONN];
};
static void sco_conns_scanning_cb(struct bt_conn *sco, void *user_data)
{
struct sco_conns_scanning_data *data;
struct bt_sco_chan *chan;
int i;
data = (struct sco_conns_scanning_data *)user_data;
if (sco->sco.acl != data->acl) {
return;
}
chan = SCO_CHAN(sco);
if (chan->state != BT_SCO_STATE_ENCRYPT_PENDING) {
return;
}
for (i = 0; i < CONFIG_BT_MAX_SCO_CONN; i++) {
if (data->sco[i] == NULL) {
data->sco[i] = sco;
break;
}
}
bt_sco_chan_set_state(chan, BT_SCO_STATE_DISCONNECTED);
}
void bt_sco_security_changed(struct bt_conn *acl, uint8_t hci_status)
{
struct sco_conns_scanning_data data;
struct bt_sco_chan *chan;
int err;
int i;
uint8_t hci_err;
/* The peripheral does not accept any SCO requests if security is
* insufficient, so we only need to handle central here.
* BT_SCO_STATE_ENCRYPT_PENDING is only set by the central.
*/
if (!IS_ENABLED(CONFIG_BT_CENTRAL) ||
acl->role != BT_CONN_ROLE_CENTRAL) {
return;
}
(void)memset(&data, 0, sizeof(data));
bt_conn_foreach(BT_CONN_TYPE_SCO, sco_conns_scanning_cb, &data);
for (i = 0; i < CONFIG_BT_MAX_SCO_CONN; i++) {
struct bt_conn *sco;
sco = data.sco[i];
if (sco != NULL) {
chan = SCO_CHAN(sco);
hci_err = hci_status;
if (hci_status == BT_HCI_ERR_SUCCESS) {
err = sco_setup_sync_conn(sco);
if (err < 0) {
LOG_ERR("Failed to setup sync conn: %d", err);
bt_sco_cleanup(sco);
hci_err = BT_HCI_ERR_UNSPECIFIED;
} else {
/* Set connection states */
bt_sco_chan_set_state(chan, BT_SCO_STATE_CONNECTING);
}
}
if (hci_err != BT_HCI_ERR_SUCCESS) {
LOG_DBG("Failed to encrypt ACL %p for SCO %p: %u", acl,
sco, hci_status);
/* Notify upper-layer that the SCO connection
* cannot be created due to the error.
*/
if (chan->ops->disconnected) {
chan->ops->disconnected(chan, hci_err);
}
}
}
}
}

14
subsys/bluetooth/host/classic/sco_internal.h
View file

@ -53,16 +53,6 @@ struct bt_sco_chan {
struct bt_sco_chan_ops *ops;
enum bt_sco_state state;
/** @brief The required security level of the channel
*
* This value can be set as the central before calling bt_conn_create_sco().
* The value is overwritten to @ref bt_iso_server::sec_level for the
* peripheral once a channel has been accepted.
*
* Only available when @kconfig{CONFIG_BT_SMP} is enabled.
*/
bt_security_t required_sec_level;
};
/** @brief Initiate an SCO connection to a remote device.
@ -149,12 +139,8 @@ void bt_sco_connected(struct bt_conn *sco);
*/
void bt_sco_disconnected(struct bt_conn *sco);
/* Notify SCO connected channels of security changed */
void bt_sco_security_changed(struct bt_conn *acl, uint8_t hci_status);
uint8_t bt_esco_conn_req(struct bt_hci_evt_conn_request *evt);
#if defined(CONFIG_BT_CONN_LOG_LEVEL_DBG)
void bt_sco_chan_set_state_debug(struct bt_sco_chan *chan,
enum bt_sco_state state,

4
subsys/bluetooth/host/conn.c
View file

@ -2325,10 +2325,6 @@ void bt_conn_security_changed(struct bt_conn *conn, uint8_t hci_err,
bt_iso_security_changed(conn, hci_err);
}
if (IS_ENABLED(CONFIG_BT_CLASSIC)) {
bt_sco_security_changed(conn, hci_err);
}
for (struct bt_conn_cb *cb = callback_list; cb; cb = cb->_next) {
if (cb->security_changed) {
cb->security_changed(conn, conn->sec_level, err);