m_dup
if ((m0 = m_dup(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
if ((m0 = m_dup(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
*m0 = m_dup(m, 0, h->ip_hl << 2, M_NOWAIT);
o = m_dup(n, off, n->m_len - off, M_DONTWAIT);
dup = m_dup(m, 0, M_COPYALL, M_NOWAIT);
mc = m_dup(m, 0, M_COPYALL, M_NOWAIT);
bpf_m = m_dup(m, 0, M_COPYALL, M_DONTWAIT);
n = m_dup(hdr, 0, hlen, M_NOWAIT);
if ((n = m_dup(n0, 0, M_COPYALL, M_DONTWAIT)) == NULL) {
n = m_dup(hdr, 0, hlen, M_NOWAIT);
struct mbuf *m_dup(struct mbuf *, int, int, int);