NGE_JLEN
m_new->m_len = m_new->m_pkthdr.len = NGE_JLEN;
ptr += NGE_JLEN;
#define NGE_RESID (NGE_JPAGESZ - (NGE_JLEN * NGE_JSLOTS) % NGE_JPAGESZ)
#define NGE_JMEM ((NGE_JLEN * NGE_JSLOTS) + NGE_RESID)