Function ff_dump_packets

lib/ff_dpdk_pcap.c:85–124

}

int
ff_dump_packets(const char* dump_path, struct rte_mbuf* pkt, uint16_t snap_len, uint32_t f_maxlen)
{
    unsigned int out_len = 0, wr_len = 0;
    struct pcap_pkthdr pcap_hdr;
    void* hdr = &pcap_hdr;
    struct timeval ts;
    char pcap_f_path[FILE_PATH_LEN] = {0};

    if (g_pcap_fp == NULL) {
        return -1;
    }
    snap_len = pkt->pkt_len < snap_len ? pkt->pkt_len : snap_len;
    gettimeofday(&ts, NULL);
    pcap_hdr.sec = ts.tv_sec;
    pcap_hdr.usec = ts.tv_usec;
    pcap_hdr.caplen = snap_len;
    pcap_hdr.len = pkt->pkt_len;
    fwrite(hdr, sizeof(struct pcap_pkthdr), 1, g_pcap_fp);
    g_flen += sizeof(struct pcap_pkthdr);

    while(pkt != NULL && out_len <= snap_len) {
        wr_len = snap_len - out_len;
        wr_len = wr_len > pkt->data_len ? pkt->data_len : wr_len ;
        fwrite(rte_pktmbuf_mtod(pkt, char*), wr_len, 1, g_pcap_fp);
        out_len += wr_len;
        pkt = pkt->next;
    }
    g_flen += out_len;

    if ( g_flen >= f_maxlen ){
        fclose(g_pcap_fp);
        if ( ++seq >= PCAP_FILE_NUM )
            seq = 0;
        
        ff_enable_pcap(dump_path, snap_len);
    }

    return 0;
}