498 nat_LayerPush(struct bundle *bundle, struct link *l __unused, struct mbuf *bp,  in nat_LayerPush()  argument
502     return bp;  in nat_LayerPush()
505   m_settype(bp, MB_NATOUT);  in nat_LayerPush()
507   bp = m_pullup(m_append(bp, NULL, NAT_EXTRABUF));  in nat_LayerPush()
508   LibAliasOut(la, MBUF_CTOP(bp), bp->m_len);  in nat_LayerPush()
509   bp->m_len = ntohs(((struct ip *)MBUF_CTOP(bp))->ip_len);  in nat_LayerPush()
511   return bp;  in nat_LayerPush()
515 nat_LayerPull(struct bundle *bundle, struct link *l __unused, struct mbuf *bp,  in nat_LayerPull()  argument
524     return bp;  in nat_LayerPull()
527   m_settype(bp, MB_NATIN);  in nat_LayerPull()
529   bp = m_pullup(m_append(bp, NULL, NAT_EXTRABUF));  in nat_LayerPull()
530   ret = LibAliasIn(la, MBUF_CTOP(bp), bp->m_len);  in nat_LayerPull()
532   bp->m_len = ntohs(((struct ip *)MBUF_CTOP(bp))->ip_len);  in nat_LayerPull()
533   if (bp->m_len > MAX_MRU) {  in nat_LayerPull()
535                (unsigned long)bp->m_len);  in nat_LayerPull()
536     m_freem(bp);  in nat_LayerPull()
546       if ((fptr = malloc(bp->m_len)) == NULL) {  in nat_LayerPull()
549 	m_freem(bp);  in nat_LayerPull()
550 	bp = NULL;  in nat_LayerPull()
552 	bp = mbuf_Read(bp, fptr, bp->m_len);  in nat_LayerPull()
561       last = &bp->m_nextpkt;  in nat_LayerPull()
563       while ((fptr = LibAliasGetFragment(la, MBUF_CTOP(bp))) != NULL) {  in nat_LayerPull()
565         LibAliasFragmentIn(la, MBUF_CTOP(bp), fptr);  in nat_LayerPull()
574                  "w %d)\n", (unsigned long)((struct ip *)MBUF_CTOP(bp))->ip_id,  in nat_LayerPull()
581         m_freem(bp);  in nat_LayerPull()
582         bp = NULL;  in nat_LayerPull()
585         PacketCheck(bundle, AF_INET, MBUF_CTOP(bp), bp->m_len, NULL,  in nat_LayerPull()
592       m_freem(bp);  in nat_LayerPull()
593       bp = NULL;  in nat_LayerPull()
597   return bp;  in nat_LayerPull()