lib/inet/ipv4.c

250  * Load the assembled fragments into igp. Returns 0 for success, nonzero
254 frag_load(struct inetgram *igp)
267 	mp = igp->igm_mp;
578  * Construct a transport datagram from a series of IP fragments (igp == NULL)
579  * or from a single IP datagram (igp != NULL). Return the address of the
583 make_trans_datagram(int index, struct inetgram *igp, struct in_addr ipsrc,
592 	fragmented = (igp == NULL);
623 		iph = (struct ip *)igp->igm_mp->b_rptr;
625 		transp = (uint16_t *)(igp->igm_mp->b_rptr + iphlen);
656 		bcopy((caddr_t)(igp->igm_mp->b_rptr),
695 	struct inetgram		*igp, *newgp = NULL, *ipv4_listp = NULL;
709 	while ((igp = sockets[index].inq) != NULL) {
710 		if (igp->igm_level != NETWORK_LVL) {
713 			    index, igp->igm_level);
715 			del_gram(&sockets[index].inq, igp, TRUE);
718 		iphp = (struct ip *)igp->igm_mp->b_rptr;
722 			del_gram(&sockets[index].inq, igp, TRUE);
729 			del_gram(&sockets[index].inq, igp, TRUE);
733 		if (iplen > msgdsize(igp->igm_mp)) {
735 			    "(%d > %lu)\n", index, iplen, igp->igm_mp->b_size);
736 			del_gram(&sockets[index].inq, igp, TRUE);
745 		/* igp->igm_mp->b_datap is guaranteed to be 64 bit aligned] */
749 			del_gram(&sockets[index].inq, igp, TRUE);
763 				del_gram(&sockets[index].inq, igp, TRUE);
770 			icmp4(igp, iphp, iphlen, ipsrc);
771 			del_gram(&sockets[index].inq, igp, TRUE);
778 		    index, ntohs(iphp->ip_id), iphp->ip_p, igp, igp->igm_mp,
779 		    igp->igm_mp->b_size);
787 			del_gram(&sockets[index].inq, igp, FALSE);
788 			add_grams(&ipv4_listp, igp);
789 			igp->igm_mp->b_rptr += iphlen;
790 			igp->igm_mp->b_wptr = igp->igm_mp->b_rptr + iplen;
800 			del_gram(&sockets[index].inq, igp, TRUE);
819 			mp = igp->igm_mp;
821 			    sockets[index].headerlen[TRANSPORT_LVL](igp)) {
825 				del_gram(&sockets[index].inq, igp, TRUE);
839 				del_gram(&sockets[index].inq, igp, TRUE);
846 				frag_stat = frag_add(curr_off, igp->igm_mp,
860 					    igp, TRUE);
864 				del_gram(&sockets[index].inq, igp, FALSE);
866 				bkmem_free((caddr_t)igp,
875 				newgp = make_trans_datagram(index, igp,
881 				del_gram(&sockets[index].inq, igp,
887 			frag_stat = frag_add(curr_off, igp->igm_mp,
897 				del_gram(&sockets[index].inq, igp, FALSE);
899 				bkmem_free((caddr_t)igp,
911 				del_gram(&sockets[index].inq, igp, TRUE);
920 		 * fragment table, and the inetgram (igp) has been