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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* 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:
*
* http://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.
*/
/**
* \file msgbuf.h
* \brief hICN message buffer
*/
#ifndef HICNLIGHT_MSGBUF
#define HICNLIGHT_MSGBUF
#include "name.h"
#include "ticks.h"
#include "messageHandler.h"
#include <hicn/ctrl/hicn-light-ng.h>
#define MTU 1500
#define INVALID_MSGBUF_ID ~0ul
#define msgbuf_id_is_valid(msgbuf_id) \
((unsigned long)msgbuf_id != INVALID_MSGBUF_ID)
#define foreach_msg_type \
_(UNDEFINED) \
_(INTEREST) \
_(DATA) \
_(WLDR_NOTIFICATION) \
_(MAPME) \
_(COMMAND) \
_(N)
typedef enum {
#define _(x) MSGBUF_TYPE_##x,
foreach_msg_type
#undef _
} msgbuf_type_t;
#undef foreach_msg_type
typedef struct {
unsigned length;
msgbuf_type_t type;
unsigned connection_id;
Ticks recv_ts;
unsigned refs;
unsigned path_label;
union {
/* Interest or data packet */
struct {
Name name;
} id;
/* Command packet */
struct {
command_type_t type;
} command;
};
uint8_t packet[MTU];
} msgbuf_t;
#define msgbuf_get_name(M) (&((M)->id.name))
#define msgbuf_get_connection_id(M) ((M)->connection_id)
#define msgbuf_get_type(M) ((M)->type)
#define msgbuf_has_wldr(M) (messageHandler_HasWldr((M)->packet))
#define msgbuf_get_len(M) ((M)->length)
#define msgbuf_get_packet(M) ((M)->packet)
#define msgbuf_get_command_type(M) ((M)->command.type)
// XXX TODO EXPLAIN THE CONSTANT
#define msgbuf_get_lifetime(M) \
(NSEC_TO_TICKS(messageHandler_GetInterestLifetime((M)->packet) * 1000000ULL))
// Lifetimes/expiry times in milliseconds
#define msgbuf_get_interest_lifetime(M) \
(messageHandler_GetInterestLifetime((M)->packet))
#define msgbuf_get_data_expiry_time(M) \
(messageHandler_GetContentExpiryTime((M)->packet))
static inline bool msgbuf_set_interest_lifetime(msgbuf_t *msgbuf,
u32 lifetime) {
return messageHandler_SetInterestLifetime(msgbuf->packet, lifetime);
}
static inline bool msgbuf_set_data_expiry_time(msgbuf_t *msgbuf, u32 lifetime) {
return messageHandler_SetDataExpiryTime(msgbuf->packet, lifetime);
}
#define msgbuf_is_probe(M) messageHandler_IsAProbe((M)->packet)
/* Path label */
#define msgbuf_init_pathlabel(M) \
((M)->path_label = messageHandler_GetPathLabel((M)->packet))
#define msgbuf_update_pathlabel(M, outface) \
{ \
messageHandler_SetPathLabel((M)->packet, \
messageHandler_GetPathLabel((M)->packet), \
(M)->path_label); \
messageHandler_UpdatePathLabel((M)->packet, outface); \
}
#define msgbuf_reset_pathlabel(M) \
{ \
(M)->path_label = 0; \
messageHandler_ResetPathLabel((M)->packet); \
}
/* WLDR */
#define msgbuf_reset_wldr_label(M) (messageHandler_ResetWldrLabel((M)->packet))
#define msgbuf_get_wldr_label(M) (messageHandler_GetWldrLabel((M)->packet))
#define msgbuf_get_wldr_expected_label(M) \
(messageHandler_GetWldrExpectedLabel((M)->packet))
#define msgbuf_get_wldr_last_received(M) \
(messageHandler_GetWldrLastReceived((M)->packet))
#define msgbuf_set_wldr_label(M, label) \
(messageHandler_GetWldrLabel((M)->packet, label))
#endif /* HICNLIGHT_MSGBUF */
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