net/appletalk/ddp.c

1301 			      struct ddpehdr *ddp, __u16 len_hops, int origlen)
1310 	if (skb->pkt_type != PACKET_HOST || !ddp->deh_dnet) {
1323 	ta.s_net  = ddp->deh_dnet;
1324 	ta.s_node = ddp->deh_dnode;
1351 	ddp->deh_len_hops = htons(len_hops);
1362 	 * Note. ddp-> becomes invalid at the realloc.
1404 	struct ddpehdr *ddp;
1419 	if (!pskb_may_pull(skb, sizeof(*ddp)))
1422 	ddp = ddp_hdr(skb);
1424 	len_hops = ntohs(ddp->deh_len_hops);
1431 	 * Size check to see if ddp->deh_len was crap
1435 	if (skb->len < sizeof(*ddp) || skb->len < (len_hops & 1023)) {
1445 	if (ddp->deh_sum &&
1446 	    atalk_checksum(skb, len_hops & 1023) != ddp->deh_sum)
1451 	if (!ddp->deh_dnet)	/* Net 0 is 'this network' */
1452 		atif = atalk_find_anynet(ddp->deh_dnode, dev);
1454 		atif = atalk_find_interface(ddp->deh_dnet, ddp->deh_dnode);
1460 		return atalk_route_packet(skb, dev, ddp, len_hops, origlen);
1467 	tosat.sat_addr.s_net  = ddp->deh_dnet;
1468 	tosat.sat_addr.s_node = ddp->deh_dnode;
1469 	tosat.sat_port	      = ddp->deh_dport;
1501 		struct ddpehdr *ddp;
1516 		ddp = skb_push(skb, sizeof(*ddp) - 4);
1526 		ddp->deh_dnode = skb_mac_header(skb)[0];     /* From physical header */
1527 		ddp->deh_snode = skb_mac_header(skb)[1];     /* From physical header */
1529 		ddp->deh_dnet  = ap->s_net;	/* Network number */
1530 		ddp->deh_snet  = ap->s_net;
1531 		ddp->deh_sum   = 0;		/* No checksum */
1536 		ddp->deh_len_hops = htons(skb->len + (DDP_MAXHOPS << 10));
1556 	struct ddpehdr *ddp;
1649 	ddp = skb_put(skb, sizeof(struct ddpehdr));
1650 	ddp->deh_len_hops  = htons(len + sizeof(*ddp));
1651 	ddp->deh_dnet  = usat->sat_addr.s_net;
1652 	ddp->deh_snet  = at->src_net;
1653 	ddp->deh_dnode = usat->sat_addr.s_node;
1654 	ddp->deh_snode = at->src_node;
1655 	ddp->deh_dport = usat->sat_port;
1656 	ddp->deh_sport = at->src_port;
1668 		ddp->deh_sum = 0;
1670 		ddp->deh_sum = atalk_checksum(skb, len + sizeof(*ddp));
1676 	if (ddp->deh_dnode == ATADDR_BCAST &&
1694 		if (ddp->deh_dnode == ATADDR_BCAST) {
1727 	struct ddpehdr *ddp;
1740 	ddp = ddp_hdr(skb);
1741 	copied = ntohs(ddp->deh_len_hops) & 1023;
1744 		offset = sizeof(*ddp);
1757 		sat->sat_port        = ddp->deh_sport;
1758 		sat->sat_addr.s_node = ddp->deh_snode;
1759 		sat->sat_addr.s_net  = ddp->deh_snet;