MBC_ATTACH_MBUF
MBC_ATTACH_MBUF(&clear_mbc, m);
MBC_ATTACH_MBUF(&sr->raw_data, m);
MBC_ATTACH_MBUF(&sr->raw_data, m);
MBC_ATTACH_MBUF(fsctl->out_mbc, mb);
MBC_ATTACH_MBUF(&sr->raw_data, top);
MBC_ATTACH_MBUF(&sr->raw_data, top);
MBC_ATTACH_MBUF(&sr->command, mhead);
void MBC_ATTACH_MBUF(struct mbuf_chain *, struct mbuf *);