-/*
- * Modelled after tr_type_trans
- * All multicast and ARE or STE frames go to BUS.
- * Non source routed frames go by destination address.
- * Last hop source routed frames go by destination address.
- * Not last hop source routed frames go by _next_ route descriptor.
- * Returns pointer to destination MAC address or fills in rdesc
- * and returns NULL.
- */
-#ifdef CONFIG_TR
-static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc)
-{
- struct trh_hdr *trh;
- unsigned int riflen, num_rdsc;
-
- trh = (struct trh_hdr *)packet;
- if (trh->daddr[0] & (uint8_t) 0x80)
- return bus_mac; /* multicast */
-
- if (trh->saddr[0] & TR_RII) {
- riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
- if ((ntohs(trh->rcf) >> 13) != 0)
- return bus_mac; /* ARE or STE */
- } else
- return trh->daddr; /* not source routed */
-
- if (riflen < 6)
- return trh->daddr; /* last hop, source routed */
-
- /* riflen is 6 or more, packet has more than one route descriptor */
- num_rdsc = (riflen / 2) - 1;
- memset(rdesc, 0, ETH_ALEN);
- /* offset 4 comes from LAN destination field in LE control frames */
- if (trh->rcf & htons((uint16_t) TR_RCF_DIR_BIT))
- memcpy(&rdesc[4], &trh->rseg[num_rdsc - 2], sizeof(__be16));
- else {
- memcpy(&rdesc[4], &trh->rseg[1], sizeof(__be16));
- rdesc[5] = ((ntohs(trh->rseg[0]) & 0x000f) | (rdesc[5] & 0xf0));
- }
-
- return NULL;
-}
-#endif /* CONFIG_TR */
-