bsd/netat/ddp.c

59 #include <netat/ddp.h>
84 snmpStats_t snmpStats;		/* snmp ddp & echo stats */
351 	dPrintf(D_M_DDP, D_L_STARTUP, ("ddp:adding ifID_table[%d]\n", port));
355 	ifID->ifPort = port;	/* set ddp port # in ifID */
480 	  *ddp = (at_ddp_t *)gbuf_rptr(m),
484 	if (UAS_VALUE(ddp->checksum)) {
486 		UAS_ASSIGN_HTON(ddp->checksum, tmp);
494 		NET_NET(tmp_ddp->src_net, ddp->src_net);
495 		tmp_ddp->src_node = ddp->src_node;
496 		tmp_ddp->src_socket = ddp->src_socket;
499 			UAS_ASSIGN_HTON(ddp->checksum, tmp);
517  *	Called to queue a atp/ddp data packet on the network interface.
529 	register at_ddp_t	*ddp;
548 	ddp = (at_ddp_t *)gbuf_rptr(m);
558 	if ((ddp->dst_socket > (unsigned) (DDP_SOCKET_LAST + 1)) ||
559 	    (ddp->dst_socket < DDP_SOCKET_1st_RESERVED)) {
562 			 ddp->dst_socket));
580 	DDPLEN_ASSIGN(ddp, len);
581 	ddp->hopcount =
582 	  ddp->unused = 0;
591 	dst_net = NET_VALUE(ddp->dst_net);
597 	if ((ddp->dst_node == 0xfe) &&
602 		NET_ASSIGN(ddp->dst_net, ifID_home->ifARouter.s_net);
604 		ddp->dst_node = ifID_home->ifARouter.s_node;
607 	if (MULTIHOME_MODE && (ifIDTmp = forUs(ddp))) {
615 		loop = ((ddp->dst_node == ifID->ifThisNode.s_node) &&
622 			NET_ASSIGN(ddp->src_net, ifID->ifThisNode.s_net);
623 			ddp->src_node = ifID->ifThisNode.s_node;
625 		ddp->src_socket = src_socket;
629 			  NET_VALUE(ddp->dst_net),
630 			  ddp->dst_node,
637 			ddp->src_socket, ddp->dst_socket));
646         if ((ddp->dst_socket == ZIP_SOCKET) &&
648 	        ddp->src_socket = src_socket;
726 			  ddp->src_node = ifID->ifThisNode.s_node;
727 			  NET_ASSIGN(ddp->src_net, ifID->ifThisNode.s_net);
729 			ddp->src_socket = src_socket;
749 			at_dest.atalk_node = ddp->dst_node;
771 			ddp->src_node = ifID->ifThisNode.s_node;
772 			NET_ASSIGN(ddp->src_net, ifID->ifThisNode.s_net);
776 		ddp->src_node = ifID_home->ifThisNode.s_node;
777 		NET_ASSIGN(ddp->src_net, ifID_home->ifThisNode.s_net);
779 	ddp->src_socket = src_socket;
783 		dst_net, ddp->dst_node, ddp->dst_socket, ifID->ifName));
795 	/* the incoming frame is of the form {flag, address, ddp...}
837 	/* At this point, rptr points to ddp header for sure */
857 	     * we don't want elap to be looking into ddp header, so
878 	register at_ddp_t *ddp;		/* DDP header */
906 	 * stripped in the lap level immediately below ddp
923 	 * form {extended ddp,...}.  The packet is meant to go
930 	 * the form {ddp,...}.
941 	 * {extended ddp, ... }.
943 	ddp = (at_ddp_t *)gbuf_rptr(mp);
944 	len = DDPLEN_VALUE(ddp);
950 				       ("Length problems, ddp length %d, buffer length %d",
965 				("Length problems, ddp length %d, buffer length %d",
973 	socket = ddp->dst_socket;
984 			ddp->dst_socket));
992 	if (UAS_VALUE(ddp->checksum) &&
993            (UAS_VALUE_NTOH(ddp->checksum) != ddp_checksum(mp, 4))) {
996 			ddp_checksum(mp, 4), UAS_VALUE_NTOH(ddp->checksum)));
1025 	dst_net = NET_VALUE(ddp->dst_net);
1028 	    forUs(ddp) ||
1030 	    ((ddp->dst_node == 255) &&
1041 		if (ddp->type == DDP_ATP) {
1047 		} else if (ddp->type == DDP_ADSP) {
1060 		    	(gref->ddptype == 0 || gref->ddptype == ddp->type)) {
1067 				ddp_in.sat_addr.s_net = NET_VALUE(ddp->src_net);
1068 				ddp_in.sat_addr.s_node = ddp->src_node;
1069 				ddp_in.sat_port = ddp->src_socket;
1105 			 ifID->ifPort, ddp->dst_socket));
1129  *	address found in the ddp packet... This is the trick about routing, the
1142 	register at_ddp_t	*ddp;
1153 	ddp = (at_ddp_t *)gbuf_rptr(mp);
1189 		  if	((ddp->dst_node == ifID->ifThisNode.s_node) &&
1190 			 (NET_VALUE(ddp->dst_net) == ifID->ifThisNode.s_net)) {
1193 				 ifID->ifPort, ddp->dst_socket));
1195 			UAS_ASSIGN(ddp->checksum, 0);
1207 			   ifID->ifPort, NET_VALUE(ddp->dst_net), ddp->dst_node, router_net,
1216 			   ifID->ifPort, NET_VALUE(ddp->dst_net), ddp->dst_node));
1234 	    /* the incoming frame is of the form {flag, address, ddp...}
1277 	    /* At this point, rptr points to ddp header for sure */
1297 	       * we don't want elap to be looking into ddp header, so
1403 at_ifaddr_t *forUs(ddp)
1404      register at_ddp_t *ddp;
1409 		if ((ddp->dst_node == ifID->ifThisNode.s_node) &&
1410 		    (NET_VALUE(ddp->dst_net) ==  ifID->ifThisNode.s_net)