nbuf_head_mbuf
struct mbuf * nbuf_head_mbuf(nbuf_t *);
const struct mbuf *mbuf = nbuf_head_mbuf(nbuf);
if (nbuf_head_mbuf(nbuf) == NULL) {
struct mbuf *m = nbuf_head_mbuf(npc->npc_nbuf);
struct mbuf *m0 = nbuf_head_mbuf(npc->npc_nbuf);
if ((*mp = nbuf_head_mbuf(&nbuf)) == NULL) {
if ((*mp = nbuf_head_mbuf(&nbuf)) == NULL) {
m = nbuf_head_mbuf(nbuf);
struct mbuf *m = nbuf_head_mbuf(npc->npc_nbuf);
struct mbuf *m = nbuf_head_mbuf(npc->npc_nbuf);
struct mbuf *m = nbuf_head_mbuf(nbuf);
m_freem(nbuf_head_mbuf(&nbuf));