m_fixhdr
return mbp->mb_top->m_pkthdr.len = m_fixhdr(mbp->mb_top);
totpcount = m_fixhdr(m);
totdcount = m_fixhdr(m);
m_fixhdr(mdp->md_top);
m_fixhdr(mdp->md_top);
nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
len = m_fixhdr(mdp->md_top);
len = m_fixhdr(mdp->md_top);
int m_fixhdr(struct mbuf *m);