350 static inline void lowpan_iphc_tf_set_ecn(struct ipv6hdr *hdr, const u8 *tf)  in lowpan_iphc_tf_set_ecn()  argument
356 	hdr->flow_lbl[0] |= (ecn >> 2);  in lowpan_iphc_tf_set_ecn()
360 static inline void lowpan_iphc_tf_set_dscp(struct ipv6hdr *hdr, const u8 *tf)  in lowpan_iphc_tf_set_dscp()  argument
366 	hdr->priority |= ((dscp & 0x3c) >> 2);  in lowpan_iphc_tf_set_dscp()
368 	hdr->flow_lbl[0] |= ((dscp & 0x03) << 6);  in lowpan_iphc_tf_set_dscp()
372 static inline void lowpan_iphc_tf_set_lbl(struct ipv6hdr *hdr, const u8 *lbl)  in lowpan_iphc_tf_set_lbl()  argument
383 	hdr->flow_lbl[0] |= lbl[0] & 0x0f;  in lowpan_iphc_tf_set_lbl()
384 	memcpy(&hdr->flow_lbl[1], &lbl[1], 2);  in lowpan_iphc_tf_set_lbl()
391 static int lowpan_iphc_tf_decompress(struct sk_buff *skb, struct ipv6hdr *hdr,  in lowpan_iphc_tf_decompress()  argument
409 		lowpan_iphc_tf_set_ecn(hdr, tf);  in lowpan_iphc_tf_decompress()
410 		lowpan_iphc_tf_set_dscp(hdr, tf);  in lowpan_iphc_tf_decompress()
411 		lowpan_iphc_tf_set_lbl(hdr, &tf[1]);  in lowpan_iphc_tf_decompress()
424 		lowpan_iphc_tf_set_ecn(hdr, tf);  in lowpan_iphc_tf_decompress()
425 		lowpan_iphc_tf_set_lbl(hdr, &tf[0]);  in lowpan_iphc_tf_decompress()
437 		lowpan_iphc_tf_set_ecn(hdr, tf);  in lowpan_iphc_tf_decompress()
438 		lowpan_iphc_tf_set_dscp(hdr, tf);  in lowpan_iphc_tf_decompress()
461 	struct ipv6hdr hdr = {};  in lowpan_header_decompress()  local
476 	hdr.version = 6;  in lowpan_header_decompress()
478 	err = lowpan_iphc_tf_decompress(skb, &hdr,  in lowpan_header_decompress()
486 		if (lowpan_fetch_skb(skb, &hdr.nexthdr, sizeof(hdr.nexthdr)))  in lowpan_header_decompress()
490 			 hdr.nexthdr);  in lowpan_header_decompress()
495 		hdr.hop_limit = lowpan_ttl_values[iphc0 & LOWPAN_IPHC_HLIM_MASK];  in lowpan_header_decompress()
497 		if (lowpan_fetch_skb(skb, &hdr.hop_limit,  in lowpan_header_decompress()
498 				     sizeof(hdr.hop_limit)))  in lowpan_header_decompress()
505 		err = uncompress_context_based_src_addr(skb, &hdr.saddr,  in lowpan_header_decompress()
510 		err = uncompress_addr(skb, dev, &hdr.saddr,  in lowpan_header_decompress()
524 			err = lowpan_uncompress_multicast_daddr(skb, &hdr.daddr,  in lowpan_header_decompress()
531 		err = uncompress_addr(skb, dev, &hdr.daddr,  in lowpan_header_decompress()
534 			 iphc1 & LOWPAN_IPHC_DAM_MASK, &hdr.daddr);  in lowpan_header_decompress()
541 		err = lowpan_nhc_do_uncompression(skb, dev, &hdr);  in lowpan_header_decompress()
545 		err = skb_cow(skb, sizeof(hdr));  in lowpan_header_decompress()
553 			hdr.payload_len = htons(lowpan_802154_cb(skb)->d_size -  in lowpan_header_decompress()
556 			hdr.payload_len = htons(skb->len);  in lowpan_header_decompress()
559 		hdr.payload_len = htons(skb->len);  in lowpan_header_decompress()
568 		hdr.version, ntohs(hdr.payload_len), hdr.nexthdr,  in lowpan_header_decompress()
569 		hdr.hop_limit, &hdr.daddr);  in lowpan_header_decompress()
571 	skb_push(skb, sizeof(hdr));  in lowpan_header_decompress()
573 	skb_copy_to_linear_data(skb, &hdr, sizeof(hdr));  in lowpan_header_decompress()
575 	raw_dump_table(__func__, "raw header dump", (u8 *)&hdr, sizeof(hdr));  in lowpan_header_decompress()
617 static inline u8 lowpan_iphc_get_tc(const struct ipv6hdr *hdr)  in lowpan_iphc_get_tc()  argument
624 	dscp = (hdr->priority << 2) | ((hdr->flow_lbl[0] & 0xc0) >> 6);  in lowpan_iphc_get_tc()
626 	ecn = (hdr->flow_lbl[0] & 0x30);  in lowpan_iphc_get_tc()
634 static inline bool lowpan_iphc_is_flow_lbl_zero(const struct ipv6hdr *hdr)  in lowpan_iphc_is_flow_lbl_zero()  argument
636 	return ((!(hdr->flow_lbl[0] & 0x0f)) &&  in lowpan_iphc_is_flow_lbl_zero()
637 		!hdr->flow_lbl[1] && !hdr->flow_lbl[2]);  in lowpan_iphc_is_flow_lbl_zero()
643 static u8 lowpan_iphc_tf_compress(u8 **hc_ptr, const struct ipv6hdr *hdr)  in lowpan_iphc_tf_compress()  argument
646 	u8 tc = lowpan_iphc_get_tc(hdr), tf[4], val;  in lowpan_iphc_tf_compress()
651 	if (lowpan_iphc_is_flow_lbl_zero(hdr)) {  in lowpan_iphc_tf_compress()
677 			memcpy(&tf[0], &hdr->flow_lbl[0], 3);  in lowpan_iphc_tf_compress()
699 			memcpy(&tf[1], &hdr->flow_lbl[0], 3);  in lowpan_iphc_tf_compress()
746 	struct ipv6hdr *hdr;  in lowpan_header_compress()  local
753 	hdr = ipv6_hdr(skb);  in lowpan_header_compress()
758 		 hdr->version, ntohs(hdr->payload_len), hdr->nexthdr,  in lowpan_header_compress()
759 		 hdr->hop_limit, &hdr->daddr);  in lowpan_header_compress()
781 	iphc0 |= lowpan_iphc_tf_compress(&hc_ptr, hdr);  in lowpan_header_compress()
788 	ret = lowpan_nhc_check_compression(skb, hdr, &hc_ptr);  in lowpan_header_compress()
790 		lowpan_push_hc_data(&hc_ptr, &hdr->nexthdr,  in lowpan_header_compress()
791 				    sizeof(hdr->nexthdr));  in lowpan_header_compress()
801 	switch (hdr->hop_limit) {  in lowpan_header_compress()
812 		lowpan_push_hc_data(&hc_ptr, &hdr->hop_limit,  in lowpan_header_compress()
813 				    sizeof(hdr->hop_limit));  in lowpan_header_compress()
816 	addr_type = ipv6_addr_type(&hdr->saddr);  in lowpan_header_compress()
823 			iphc1 |= lowpan_compress_addr_64(&hc_ptr, &hdr->saddr,  in lowpan_header_compress()
826 				 &hdr->saddr, iphc1);  in lowpan_header_compress()
829 			lowpan_push_hc_data(&hc_ptr, hdr->saddr.s6_addr, 16);  in lowpan_header_compress()
833 	addr_type = ipv6_addr_type(&hdr->daddr);  in lowpan_header_compress()
838 		iphc1 |= lowpan_iphc_mcast_addr_compress(&hc_ptr, &hdr->daddr);  in lowpan_header_compress()
842 			iphc1 |= lowpan_compress_addr_64(&hc_ptr, &hdr->daddr,  in lowpan_header_compress()
845 				 "iphc1 0x%02x\n", &hdr->daddr, iphc1);  in lowpan_header_compress()
847 			pr_debug("dest address unicast %pI6c\n", &hdr->daddr);  in lowpan_header_compress()
848 			lowpan_push_hc_data(&hc_ptr, hdr->daddr.s6_addr, 16);  in lowpan_header_compress()
854 		ret = lowpan_nhc_do_compression(skb, hdr, &hc_ptr);  in lowpan_header_compress()