common.h

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/*
 * Copyright (c) 2019 The University of Manchester
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef __COMMON_H__
#define __COMMON_H__
#include <common-typedefs.h>
#include <sdp_no_scp.h>
 
enum reinjector_command_codes {
    CMD_DPRI_SET_ROUTER_TIMEOUT = 0,
    CMD_DPRI_SET_ROUTER_EMERGENCY_TIMEOUT = 1,
    CMD_DPRI_SET_PACKET_TYPES = 2,
    CMD_DPRI_GET_STATUS = 3,
    CMD_DPRI_RESET_COUNTERS = 4,
    CMD_DPRI_EXIT = 5,
    CMD_DPRI_CLEAR = 6
};
 
typedef enum {
    ROUTER_TIMEOUT_OFFSET = 0,
    ROUTER_EMERGENCY_TIMEOUT_OFFSET = 1,
    REINJECTOR_CLEAR_QUEUE_OFFSET = 2,
} reinjector_key_offsets;
 
// ------------------------------------------------------------------------
// global variables for the reinjection mc interface
// ------------------------------------------------------------------------
 
static uint reinject_timeout_mc_key;
 
static uint reinject_emergency_timeout_mc_key;
 
static uint reinject_clear_mc_key;
 
static void initialise_reinjection_mc_api(uint32_t base_mc_key) {
    // set the router timeout keys
    reinject_timeout_mc_key = base_mc_key + ROUTER_TIMEOUT_OFFSET;
    reinject_emergency_timeout_mc_key =
            base_mc_key + ROUTER_EMERGENCY_TIMEOUT_OFFSET;
    reinject_clear_mc_key = base_mc_key + REINJECTOR_CLEAR_QUEUE_OFFSET;
}
 
#define SDP_REPLY_HEADER_LEN 12
 
#define TRANSACTION_CAP 0xFFFFFFF
 
static inline void reflect_sdp_message(sdp_msg_t *msg, uint body_length) {
    msg->length = SDP_REPLY_HEADER_LEN + body_length;
    uint dest_port = msg->dest_port;
    uint dest_addr = msg->dest_addr;
 
    msg->dest_port = msg->srce_port;
    msg->srce_port = dest_port;
 
    msg->dest_addr = msg->srce_addr;
    msg->srce_addr = dest_addr;
}
 
#endif  // __COMMON_H__