pcap_util.h

/*
 * Copyright 2018 VMware, Inc.
 * SPDX-FileCopyrightText: 2018 VMware, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 

#ifndef BACKENDS_EBPF_RUNTIME_EBPF_PCAP_UTIL_H_
#define BACKENDS_EBPF_RUNTIME_EBPF_PCAP_UTIL_H_
 
#define PCAP_DONT_INCLUDE_PCAP_BPF_H
#include <pcap/pcap.h>
#include <stdint.h>     // uint32_t, uint16_t

typedef uint16_t iface_index;

typedef struct {
    char *data;
    struct pcap_pkthdr pcap_hdr;
    iface_index ifindex;
} pcap_pkt;
 
struct pcap_list;
struct pcap_list_array;
typedef struct pcap_list pcap_list_t;
typedef struct pcap_list_array pcap_list_array_t;

pcap_list_t *read_pkts_from_pcap(const char *pcap_file_name, iface_index index);

int write_pkts_to_pcap(const char *pcap_file_name, const pcap_list_t *pkt_list);

pcap_list_t *merge_and_delete_lists(pcap_list_array_t *array, pcap_list_t *merged_list);

pcap_list_array_t *split_and_delete_list(pcap_list_t *input_list, pcap_list_array_t *result_arr);

pcap_list_t *append_packet(pcap_list_t *pkt_list, pcap_pkt *pkt);

pcap_list_array_t *insert_list(pcap_list_array_t *pkt_array, pcap_list_t *pkt_list, uint16_t index);

pcap_list_t *allocate_pkt_list();

pcap_list_array_t *allocate_pkt_list_array();

uint32_t get_pkt_list_length(pcap_list_t *pkt_list);

uint16_t get_list_array_length(pcap_list_array_t *pkt_list_array);

pcap_pkt *get_packet(pcap_list_t *list, uint32_t index);

pcap_list_t *get_list(pcap_list_array_t *list, uint16_t index);

pcap_pkt *copy_pkt(pcap_pkt *src_pkt);

void delete_list(pcap_list_t *pkt_list);

void delete_array(pcap_list_array_t *pkt_list_array);

void sort_pcap_list(pcap_list_t *pkt_list);

char *generate_pcap_name(const char *pcap_base, int index, const char *suffix);
 
#endif  // BACKENDS_EBPF_RUNTIME_EBPF_PCAP_UTIL_H_