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/*
* Copyright (c) 2021-2023 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 <hicn/name.h>
#include "ticks.h"
#include <hicn/hicn.h>
#include <hicn/ctrl/hicn-light.h>
#define MTU 1500
#define INVALID_MSGBUF_ID ~0ul
#define msgbuf_id_is_valid(msgbuf_id) \
((unsigned long)msgbuf_id != INVALID_MSGBUF_ID)
typedef struct {
hicn_packet_buffer_t pkbuf;
unsigned connection_id; // ingress
Ticks recv_ts; // timestamp
unsigned refs; // refcount
unsigned path_label; // original path label of the received message. used
// as a base for the path label computation when the
// same data packet needs to be forwarded on multiple
// face.
// XXX Cache storage
union {
/* Interest or data packet */
struct {
hicn_name_t name;
u32 name_hash; // XXX should be always populate when name is assigned
} id;
/* Command packet */
struct {
command_type_t type;
} command;
};
uint8_t packet[MTU];
} msgbuf_t;
int msgbuf_initialize(msgbuf_t *msgbuf);
int msgbuf_initialize_from_packet(msgbuf_t *msgbuf);
#define msgbuf_get_pkbuf(M) (&(M)->pkbuf)
static inline hicn_packet_type_t msgbuf_get_type(const msgbuf_t *msgbuf) {
return hicn_packet_get_type(msgbuf_get_pkbuf(msgbuf));
}
static inline void msgbuf_set_type(msgbuf_t *msgbuf, hicn_packet_type_t type) {
hicn_packet_set_type(msgbuf_get_pkbuf(msgbuf), type);
}
static inline const hicn_name_t *msgbuf_get_name(const msgbuf_t *msgbuf) {
hicn_packet_type_t type = msgbuf_get_type(msgbuf);
assert(type == HICN_PACKET_TYPE_INTEREST || type == HICN_PACKET_TYPE_DATA);
(void)type;
return &msgbuf->id.name;
}
#define msgbuf_get_connection_id(M) ((M)->connection_id)
#define msgbuf_set_connection_id(M, ID) (M)->connection_id = (ID)
#define msgbuf_get_packet(M) ((M)->packet)
#define msgbuf_get_command_type(M) ((M)->command.type)
#if WITH_WLDR
#define msgbuf_has_wldr(M) (messageHandler_HasWldr((M)->packet))
#endif
static inline void msgbuf_set_name(msgbuf_t *msgbuf, const hicn_name_t *name) {
msgbuf->id.name = *name;
}
static inline size_t msgbuf_get_len(const msgbuf_t *msgbuf) {
return hicn_packet_get_len(msgbuf_get_pkbuf(msgbuf));
}
static inline void msgbuf_set_len(msgbuf_t *msgbuf, size_t len) {
int rc = hicn_packet_set_len(msgbuf_get_pkbuf(msgbuf), len);
assert(rc == HICN_LIB_ERROR_NONE); // XXX
_unused(rc);
}
static inline u32 msgbuf_get_name_hash(const msgbuf_t *msgbuf) {
hicn_packet_type_t type = msgbuf_get_type(msgbuf);
assert(type == HICN_PACKET_TYPE_INTEREST || type == HICN_PACKET_TYPE_DATA);
_unused(type);
return msgbuf->id.name_hash;
}
// Lifetimes/expiry times in milliseconds
static inline u32 msgbuf_get_interest_lifetime(const msgbuf_t *msgbuf) {
u32 lifetime;
int rc = hicn_interest_get_lifetime(msgbuf_get_pkbuf(msgbuf), &lifetime);
if (rc != HICN_LIB_ERROR_NONE) return 0;
return lifetime;
}
//#define msgbuf_get_lifetime(M)
// (NSEC_TO_TICKS(messageHandler_GetInterestLifetime((M)->packet) *
// 1000000ULL))
#define msgbuf_get_lifetime msgbuf_get_interest_lifetime
static inline bool msgbuf_set_interest_lifetime(msgbuf_t *msgbuf,
u32 lifetime) {
int rc = hicn_interest_set_lifetime(msgbuf_get_pkbuf(msgbuf), lifetime);
return (rc == HICN_LIB_ERROR_NONE);
}
static inline u32 msgbuf_get_data_expiry_time(const msgbuf_t *msgbuf) {
u32 lifetime;
int rc = hicn_data_get_expiry_time(msgbuf_get_pkbuf(msgbuf), &lifetime);
if (rc != HICN_LIB_ERROR_NONE) return 0;
return lifetime;
}
static inline bool msgbuf_set_data_expiry_time(msgbuf_t *msgbuf, u32 lifetime) {
int rc = hicn_data_set_expiry_time(msgbuf_get_pkbuf(msgbuf), lifetime);
return (rc == HICN_LIB_ERROR_NONE);
}
/* Path label */
static inline void msgbuf_init_pathlabel(msgbuf_t *msgbuf) {
hicn_path_label_t pl;
int rc = hicn_data_get_path_label(msgbuf_get_pkbuf(msgbuf), &pl);
assert(rc == HICN_LIB_ERROR_NONE);
_unused(rc);
msgbuf->path_label = pl;
}
static inline int msgbuf_get_path_label(const msgbuf_t *msgbuf,
hicn_path_label_t *pl) {
assert(msgbuf_get_type(msgbuf) == HICN_PACKET_TYPE_DATA);
return hicn_data_get_path_label(msgbuf_get_pkbuf(msgbuf), pl);
}
static inline int msgbuf_set_path_label(msgbuf_t *msgbuf,
hicn_path_label_t pl) {
assert(msgbuf_get_type(msgbuf) == HICN_PACKET_TYPE_DATA);
return hicn_data_set_path_label(msgbuf_get_pkbuf(msgbuf), pl);
}
static inline int msgbuf_update_pathlabel(msgbuf_t *msgbuf,
hicn_faceid_t outface) {
assert(msgbuf_get_type(msgbuf) == HICN_PACKET_TYPE_DATA);
hicn_path_label_t pl, newpl;
if (msgbuf_get_path_label(msgbuf, &pl) < 0) return -1;
update_path_label(pl, outface, &newpl);
return msgbuf_set_path_label(msgbuf, newpl);
}
static inline void msgbuf_reset_pathlabel(msgbuf_t *msgbuf) {
msgbuf->path_label = 0;
hicn_data_set_path_label(msgbuf_get_pkbuf(msgbuf), 0);
// ERROR ?
}
static inline void msgbuf_modify_suffix(msgbuf_t *msgbuf, uint32_t new_suffix) {
hicn_name_t name;
assert(msgbuf_get_type(msgbuf) == HICN_PACKET_TYPE_INTEREST);
hicn_interest_get_name(msgbuf_get_pkbuf(msgbuf), &name);
hicn_name_set_suffix(&name, new_suffix);
hicn_interest_set_name(msgbuf_get_pkbuf(msgbuf), &name);
}
bool msgbuf_is_command(const msgbuf_t *msgbuf);
bool msgbuf_is_probe(const msgbuf_t *msgbuf);
/* WLDR */
#if 0
#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
#endif /* HICNLIGHT_MSGBUF */
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