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Bluetooth: host: Refactor host auto initiated LL procedures

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Refactor the handling of the host auto initiated LL procedures.
This makes it easier to add new auto initiated procedures as well as
reduced the maintenance by reducing code duplication.

Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
This commit is contained in:
Joakim Andersson 2019-12-12 14:28:44 +01:00 • committed by Johan Hedberg
commit 32bde4fe78
2 changed files with 53 additions and 69 deletions
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3
subsys/bluetooth/host/conn_internal.h
View file

@ -31,6 +31,9 @@ enum {
BT_CONN_SLAVE_PARAM_L2CAP, /* If should force L2CAP for CPUP */
BT_CONN_FORCE_PAIR, /* Pairing even with existing keys. */
BT_CONN_AUTO_PHY_COMPLETE, /* Auto-initiated PHY procedure done */
BT_CONN_AUTO_FEATURE_EXCH, /* Auto-initiated LE Feat done */
/* Total number of flags - must be at the end of the enum */
BT_CONN_NUM_FLAGS,
};

119
subsys/bluetooth/host/hci_core.c
View file

@ -1078,12 +1078,53 @@ static struct bt_conn *find_pending_connect(bt_addr_le_t *peer_addr)
return bt_conn_lookup_state_le(peer_addr, BT_CONN_CONNECT_DIR_ADV);
}
static void conn_auto_initiate(struct bt_conn *conn)
{
int err;
if (conn->state != BT_CONN_CONNECTED) {
/* It is possible that connection was disconnected directly from
* connected callback so we must check state before doing
* connection parameters update.
*/
return;
}
if (!atomic_test_bit(conn->flags, BT_CONN_AUTO_FEATURE_EXCH) &&
((conn->role == BT_HCI_ROLE_MASTER) ||
BT_FEAT_LE_SLAVE_FEATURE_XCHG(bt_dev.le.features))) {
err = hci_le_read_remote_features(conn);
if (!err) {
return;
}
}
if (IS_ENABLED(CONFIG_BT_AUTO_PHY_UPDATE) &&
!atomic_test_bit(conn->flags, BT_CONN_AUTO_PHY_COMPLETE) &&
BT_FEAT_LE_PHY_2M(bt_dev.le.features)) {
err = hci_le_set_phy(conn);
if (!err) {
atomic_set_bit(conn->flags, BT_CONN_AUTO_PHY_UPDATE);
return;
}
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features)) {
hci_le_set_data_len(conn);
}
if (IS_ENABLED(CONFIG_BT_PERIPHERAL) &&
conn->role == BT_CONN_ROLE_SLAVE) {
slave_update_conn_param(conn);
}
}
static void enh_conn_complete(struct bt_hci_evt_le_enh_conn_complete *evt)
{
u16_t handle = sys_le16_to_cpu(evt->handle);
bt_addr_le_t peer_addr, id_addr;
struct bt_conn *conn;
int err;
BT_DBG("status 0x%02x handle %u role %u %s", evt->status, handle,
evt->role, bt_addr_le_str(&evt->peer_addr));
@ -1256,41 +1297,8 @@ static void enh_conn_complete(struct bt_hci_evt_le_enh_conn_complete *evt)
bt_conn_set_state(conn, BT_CONN_CONNECTED);
/*
* it is possible that connection was disconnected directly from
* connected callback so we must check state before doing connection
* parameters update
*/
if (conn->state != BT_CONN_CONNECTED) {
goto done;
}
if ((evt->role == BT_HCI_ROLE_MASTER) ||
BT_FEAT_LE_SLAVE_FEATURE_XCHG(bt_dev.le.features)) {
err = hci_le_read_remote_features(conn);
if (!err) {
goto done;
}
}
if (IS_ENABLED(CONFIG_BT_AUTO_PHY_UPDATE) &&
BT_FEAT_LE_PHY_2M(bt_dev.le.features)) {
err = hci_le_set_phy(conn);
if (!err) {
atomic_set_bit(conn->flags, BT_CONN_AUTO_PHY_UPDATE);
goto done;
}
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features)) {
hci_le_set_data_len(conn);
}
if (IS_ENABLED(CONFIG_BT_PERIPHERAL) &&
conn->role == BT_CONN_ROLE_SLAVE) {
slave_update_conn_param(conn);
}
/* Start auto-initiated procedures */
conn_auto_initiate(conn);
done:
bt_conn_unref(conn);
@ -1363,30 +1371,10 @@ static void le_remote_feat_complete(struct net_buf *buf)
sizeof(conn->le.features));
}
if (IS_ENABLED(CONFIG_BT_AUTO_PHY_UPDATE) &&
BT_FEAT_LE_PHY_2M(bt_dev.le.features) &&
BT_FEAT_LE_PHY_2M(conn->le.features)) {
int err;
atomic_set_bit(conn->flags, BT_CONN_AUTO_FEATURE_EXCH);
/* Continue with auto-initiated procedures */
conn_auto_initiate(conn);
err = hci_le_set_phy(conn);
if (!err) {
atomic_set_bit(conn->flags, BT_CONN_AUTO_PHY_UPDATE);
goto done;
}
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features) &&
BT_FEAT_LE_DLE(conn->le.features)) {
hci_le_set_data_len(conn);
}
if (IS_ENABLED(CONFIG_BT_PERIPHERAL) &&
conn->role == BT_CONN_ROLE_SLAVE) {
slave_update_conn_param(conn);
}
done:
bt_conn_unref(conn);
}
@ -1437,16 +1425,9 @@ static void le_phy_update_complete(struct net_buf *buf)
goto done;
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features) &&
BT_FEAT_LE_DLE(conn->le.features)) {
hci_le_set_data_len(conn);
}
if (IS_ENABLED(CONFIG_BT_PERIPHERAL) &&
conn->role == BT_CONN_ROLE_SLAVE) {
slave_update_conn_param(conn);
}
atomic_set_bit(conn->flags, BT_CONN_AUTO_PHY_COMPLETE);
/* Continue with auto-initiated procedures */
conn_auto_initiate(conn);
done:
bt_conn_unref(conn);