include/net/6lowpan.h

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54 #define __6LOWPAN_H__
61 /* special link-layer handling */
64 #define EUI64_ADDR_LEN		8
66 #define LOWPAN_NHC_MAX_ID_LEN	1
70 #define LOWPAN_NHC_MAX_HDR_LEN	(sizeof(struct udphdr))
71 /* Max IPHC Header len without IPv6 hdr specific inline data.
76 #define LOWPAN_IPHC_MAX_HEADER_LEN	(2 + 1 + LOWPAN_NHC_MAX_ID_LEN)
78 #define LOWPAN_IPHC_MAX_HC_BUF_LEN	(sizeof(struct ipv6hdr) +	\
82 #define LOWPAN_IPHC_CTX_TABLE_SIZE	(1 << 4)
84 #define LOWPAN_DISPATCH_IPV6		0x41 /* 01000001 = 65 */
85 #define LOWPAN_DISPATCH_IPHC		0x60 /* 011xxxxx = ... */
86 #define LOWPAN_DISPATCH_IPHC_MASK	0xe0
98 #define LOWPAN_PRIV_SIZE(llpriv_size)	\
126 	return test_bit(LOWPAN_IPHC_CTX_FLAG_ACTIVE, &ctx->flags);  in lowpan_iphc_ctx_is_active()
132 	return test_bit(LOWPAN_IPHC_CTX_FLAG_COMPRESSION, &ctx->flags);  in lowpan_iphc_ctx_is_compression()
169 	return (struct lowpan_802154_dev *)lowpan_dev(dev)->priv;  in lowpan_802154_dev()
181 	BUILD_BUG_ON(sizeof(struct lowpan_802154_cb) > sizeof(skb->cb));  in lowpan_802154_cb()
182 	return (struct lowpan_802154_cb *)skb->cb;  in lowpan_802154_cb()
192 	ipaddr->s6_addr[0] = 0xFE;  in lowpan_iphc_uncompress_eui64_lladdr()
193 	ipaddr->s6_addr[1] = 0x80;  in lowpan_iphc_uncompress_eui64_lladdr()
194 	memcpy(&ipaddr->s6_addr[8], lladdr, EUI64_ADDR_LEN);  in lowpan_iphc_uncompress_eui64_lladdr()
195 	/* second bit-flip (Universe/Local)  in lowpan_iphc_uncompress_eui64_lladdr()
198 	ipaddr->s6_addr[8] ^= 0x02;  in lowpan_iphc_uncompress_eui64_lladdr()
208 	ipaddr->s6_addr[0] = 0xFE;  in lowpan_iphc_uncompress_eui48_lladdr()
209 	ipaddr->s6_addr[1] = 0x80;  in lowpan_iphc_uncompress_eui48_lladdr()
210 	memcpy(&ipaddr->s6_addr[8], lladdr, 3);  in lowpan_iphc_uncompress_eui48_lladdr()
211 	ipaddr->s6_addr[11] = 0xFF;  in lowpan_iphc_uncompress_eui48_lladdr()
212 	ipaddr->s6_addr[12] = 0xFE;  in lowpan_iphc_uncompress_eui48_lladdr()
213 	memcpy(&ipaddr->s6_addr[13], lladdr + 3, 3);  in lowpan_iphc_uncompress_eui48_lladdr()
219 				   const unsigned char *buf, int len)  in raw_dump_inline()  argument
224 	print_hex_dump_debug("", DUMP_PREFIX_NONE, 16, 1, buf, len, false);  in raw_dump_inline()
234 				  const unsigned char *buf, int len)  in raw_dump_table()  argument
239 	print_hex_dump_debug("\t", DUMP_PREFIX_OFFSET, 16, 1, buf, len, false);  in raw_dump_table()
243 				  const unsigned char *buf, int len) { }  in raw_dump_table()  argument
245 				   const unsigned char *buf, int len) { }  in raw_dump_inline()  argument
249  * lowpan_fetch_skb - getting inline data from 6LoWPAN header
254  * by len.
258  * @len: amount of data which should be pulled in bytes.
261 				    unsigned int len)  in lowpan_fetch_skb()  argument
263 	if (unlikely(!pskb_may_pull(skb, len)))  in lowpan_fetch_skb()
266 	skb_copy_from_linear_data(skb, data, len);  in lowpan_fetch_skb()
267 	skb_pull(skb, len);  in lowpan_fetch_skb()
274 	/* First bit of addr is multicast, reserved or 802.15.4 specific */  in lowpan_802154_is_valid_src_short_addr()
279 				       const size_t len)  in lowpan_push_hc_data()  argument
281 	memcpy(*hc_ptr, data, len);  in lowpan_push_hc_data()
282 	*hc_ptr += len;  in lowpan_push_hc_data()
293  * lowpan_header_decompress - replace 6LoWPAN header with IPv6 header
296  * skb->data and skb_network_header, with the IPv6 header.
312  * lowpan_header_compress - replace IPv6 header with 6LoWPAN header
315  * skb->data and skb_network_header, with the IPHC 6LoWPAN header.
317  * at least a headroom which is smaller or equal LOWPAN_IPHC_MAX_HEADER_LEN,