[nrf fromtree] Revert "Bluetooth: host: Send host num completes as early as possible"

This reverts commit 147ee3d.

Signed-off-by: Pavel Vasilyev <[email protected]>
(cherry picked from commit da9acbc)
Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: PavelVPV

subsys/bluetooth/host/conn.c

@@ -283,12 +283,11 @@ void bt_conn_reset_rx_state(struct bt_conn *conn)
 	conn->rx = NULL;
 }
 
-static void bt_acl_recv(struct bt_conn *conn, struct net_buf *buf, uint8_t flags)
+static void bt_acl_recv(struct bt_conn *conn, struct net_buf *buf,
+			uint8_t flags)
 {
 	uint16_t acl_total_len;
 
-	bt_acl_set_ncp_sent(buf, false);
-
 	/* Check packet boundary flags */
 	switch (flags) {
 	case BT_ACL_START:
@@ -300,7 +299,7 @@ static void bt_acl_recv(struct bt_conn *conn, struct net_buf *buf, uint8_t flags
 		LOG_DBG("First, len %u final %u", buf->len,
 			(buf->len < sizeof(uint16_t)) ? 0 : sys_get_le16(buf->data));
 
-		conn->rx = net_buf_ref(buf);
+		conn->rx = buf;
 		break;
 	case BT_ACL_CONT:
 		if (!conn->rx) {
@@ -330,6 +329,7 @@ static void bt_acl_recv(struct bt_conn *conn, struct net_buf *buf, uint8_t flags
 		}
 
 		net_buf_add_mem(conn->rx, buf->data, buf->len);
+		net_buf_unref(buf);
 		break;
 	default:
 		/* BT_ACL_START_NO_FLUSH and BT_ACL_COMPLETE are not allowed on
@@ -346,27 +346,17 @@ static void bt_acl_recv(struct bt_conn *conn, struct net_buf *buf, uint8_t flags
 		/* Still not enough data received to retrieve the L2CAP header
 		 * length field.
 		 */
-		bt_send_one_host_num_completed_packets(conn->handle);
-		bt_acl_set_ncp_sent(buf, true);
-		net_buf_unref(buf);
-
 		return;
 	}
 
 	acl_total_len = sys_get_le16(conn->rx->data) + sizeof(struct bt_l2cap_hdr);
 
 	if (conn->rx->len < acl_total_len) {
 		/* L2CAP frame not complete. */
-		bt_send_one_host_num_completed_packets(conn->handle);
-		bt_acl_set_ncp_sent(buf, true);
-		net_buf_unref(buf);
-
 		return;
 	}
 
-	net_buf_unref(buf);
-
-	if (conn->rx->len > acl_total_len) {
+	if ((conn->type != BT_CONN_TYPE_BR) && (conn->rx->len > acl_total_len)) {
 		LOG_ERR("ACL len mismatch (%u > %u)", conn->rx->len, acl_total_len);
 		bt_conn_reset_rx_state(conn);
 		return;
@@ -376,8 +366,6 @@ static void bt_acl_recv(struct bt_conn *conn, struct net_buf *buf, uint8_t flags
 	buf = conn->rx;
 	conn->rx = NULL;
 
-	__ASSERT(buf->ref == 1, "buf->ref %d", buf->ref);
-
 	LOG_DBG("Successfully parsed %u byte L2CAP packet", buf->len);
 	bt_l2cap_recv(conn, buf, true);
 }

subsys/bluetooth/host/conn_internal.h

@@ -151,12 +151,7 @@ struct acl_data {
 	struct bt_buf_data buf_data;
 
 	/* Index into the bt_conn storage array */
-	uint8_t index;
-
-	/** Host has already sent a Host Number of Completed Packets
-	 *  for this buffer.
-	 */
-	bool host_ncp_sent;
+	uint8_t  index;
 
 	/** ACL connection handle */
 	uint16_t handle;

subsys/bluetooth/host/hci_core.c

@@ -197,11 +197,6 @@ static void handle_vs_event(uint8_t event, struct net_buf *buf,
 	/* Other possible errors are handled by handle_event_common function */
 }
 
-void bt_acl_set_ncp_sent(struct net_buf *packet, bool value)
-{
-	acl(packet)->host_ncp_sent = value;
-}
-
 void bt_send_one_host_num_completed_packets(uint16_t handle)
 {
 	if (!IS_ENABLED(CONFIG_BT_HCI_ACL_FLOW_CONTROL)) {
@@ -240,10 +235,6 @@ void bt_hci_host_num_completed_packets(struct net_buf *buf)
 
 	net_buf_destroy(buf);
 
-	if (acl(buf)->host_ncp_sent) {
-		return;
-	}
-
 	/* Do nothing if controller to host flow control is not supported */
 	if (!BT_CMD_TEST(bt_dev.supported_commands, 10, 5)) {
 		return;

subsys/bluetooth/host/hci_core.h

@@ -527,6 +527,3 @@ void bt_hci_le_df_cte_req_failed(struct net_buf *buf);
 
 void bt_hci_le_per_adv_subevent_data_request(struct net_buf *buf);
 void bt_hci_le_per_adv_response_report(struct net_buf *buf);
-
-void bt_send_one_host_num_completed_packets(uint16_t handle);
-void bt_acl_set_ncp_sent(struct net_buf *packet, bool value);