20 	const struct lowpan_nhc *nhc;  in lowpan_nhc_by_nhcid()  local
30 		nhc = lowpan_nexthdr_nhcs[i];  in lowpan_nhc_by_nhcid()
31 		if (!nhc)  in lowpan_nhc_by_nhcid()
34 		if ((id & nhc->idmask) == nhc->id)  in lowpan_nhc_by_nhcid()
35 			return nhc;  in lowpan_nhc_by_nhcid()
44 	const struct lowpan_nhc *nhc;  in lowpan_nhc_check_compression()  local
49 	nhc = lowpan_nexthdr_nhcs[hdr->nexthdr];  in lowpan_nhc_check_compression()
50 	if (!(nhc && nhc->compress))  in lowpan_nhc_check_compression()
62 	const struct lowpan_nhc *nhc;  in lowpan_nhc_do_compression()  local
66 	nhc = lowpan_nexthdr_nhcs[hdr->nexthdr];  in lowpan_nhc_do_compression()
77 	if (unlikely(!nhc || !nhc->compress)) {  in lowpan_nhc_do_compression()
88 	ret = nhc->compress(skb, hc_ptr);  in lowpan_nhc_do_compression()
93 	skb_pull(skb, nhc->nexthdrlen);  in lowpan_nhc_do_compression()
105 	const struct lowpan_nhc *nhc;  in lowpan_nhc_do_uncompression()  local
110 	nhc = lowpan_nhc_by_nhcid(skb);  in lowpan_nhc_do_uncompression()
111 	if (nhc) {  in lowpan_nhc_do_uncompression()
112 		if (nhc->uncompress) {  in lowpan_nhc_do_uncompression()
113 			ret = nhc->uncompress(skb, sizeof(struct ipv6hdr) +  in lowpan_nhc_do_uncompression()
114 					      nhc->nexthdrlen);  in lowpan_nhc_do_uncompression()
122 				    nhc->name);  in lowpan_nhc_do_uncompression()
131 	hdr->nexthdr = nhc->nexthdr;  in lowpan_nhc_do_uncompression()
134 		       skb_transport_header(skb), nhc->nexthdrlen);  in lowpan_nhc_do_uncompression()
141 int lowpan_nhc_add(const struct lowpan_nhc *nhc)  in lowpan_nhc_add()  argument
147 	if (lowpan_nexthdr_nhcs[nhc->nexthdr]) {  in lowpan_nhc_add()
152 	lowpan_nexthdr_nhcs[nhc->nexthdr] = nhc;  in lowpan_nhc_add()
159 void lowpan_nhc_del(const struct lowpan_nhc *nhc)  in lowpan_nhc_del()  argument
163 	lowpan_nexthdr_nhcs[nhc->nexthdr] = NULL;  in lowpan_nhc_del()