nimble/hci: Modifying ACL Buf size based on BLE 5.1 Standard
@@ -407,13 +407,17 @@ ble_hs_hci_rx_evt(uint8_t *hci_ev, void *arg)
}
/**
- * Calculates the largest ACL payload that the controller can accept. This is
- * everything in an ACL data packet except for the ACL header.
+ * Calculates the largest ACL payload that the controller can accept.
*/
static uint16_t
ble_hs_hci_max_acl_payload_sz(void)
{
- return ble_hs_hci_buf_sz - BLE_HCI_DATA_HDR_SZ;
+ /* As per BLE 5.1 Standard, Vol. 2, Part E, section 7.8.2:
+ * The LE_Read_Buffer_Size command is used to read the maximum size of the
+ * data portion of HCI LE ACL Data Packets sent from the Host to the
+ * Controller.
+ */
+ return ble_hs_hci_buf_sz;
}
/**
