dp_packet_init_specific(struct dp_packet *p)
{
    /* This initialization is needed for packets that do not come from DPDK
     * interfaces, when vswitchd is built with --with-dpdk. */
    p->mbuf.ol_flags = p->mbuf.tx_offload = p->mbuf.packet_type = 0;
    p->mbuf.nb_segs = 1;
    p->mbuf.next = NULL;
}
dp_packet_init_specific(struct dp_packet *p)
{
     
    p->mbuf.ol_flags = p->mbuf.tx_offload = p->mbuf.packet_type = 0;
    p->mbuf.nb_segs = 1;
    p->mbuf.next = NULL;
}