Lines Matching defs:hdr
47 ieee802154_hdr_push_sechdr(u8 *buf, const struct ieee802154_sechdr *hdr)
51 memcpy(buf, hdr, 1);
52 memcpy(buf + 1, &hdr->frame_counter, 4);
54 switch (hdr->key_id_mode) {
62 memcpy(buf + pos, &hdr->short_src, 4);
67 memcpy(buf + pos, &hdr->extended_src, IEEE802154_ADDR_LEN);
72 buf[pos++] = hdr->key_id;
78 ieee802154_hdr_push(struct sk_buff *skb, struct ieee802154_hdr *hdr)
83 struct ieee802154_hdr_fc *fc = &hdr->fc;
85 buf[pos++] = hdr->seq;
87 fc->dest_addr_mode = hdr->dest.mode;
89 rc = ieee802154_hdr_push_addr(buf + pos, &hdr->dest, false);
94 fc->source_addr_mode = hdr->source.mode;
96 if (hdr->source.pan_id == hdr->dest.pan_id &&
97 hdr->dest.mode != IEEE802154_ADDR_NONE)
100 rc = ieee802154_hdr_push_addr(buf + pos, &hdr->source, fc->intra_pan);
108 rc = ieee802154_hdr_push_sechdr(buf + pos, &hdr->sec);
161 ieee802154_hdr_get_sechdr(const u8 *buf, struct ieee802154_sechdr *hdr)
165 memcpy(hdr, buf, 1);
166 memcpy(&hdr->frame_counter, buf + 1, 4);
168 switch (hdr->key_id_mode) {
176 memcpy(&hdr->short_src, buf + pos, 4);
181 memcpy(&hdr->extended_src, buf + pos, IEEE802154_ADDR_LEN);
186 hdr->key_id = buf[pos++];
203 static int ieee802154_hdr_minlen(const struct ieee802154_hdr *hdr)
207 dlen = ieee802154_hdr_addr_len(hdr->fc.dest_addr_mode, false);
208 slen = ieee802154_hdr_addr_len(hdr->fc.source_addr_mode,
209 hdr->fc.intra_pan);
214 return 3 + dlen + slen + hdr->fc.security_enabled;
218 ieee802154_hdr_get_addrs(const u8 *buf, struct ieee802154_hdr *hdr)
222 pos += ieee802154_hdr_get_addr(buf + pos, hdr->fc.dest_addr_mode,
223 false, &hdr->dest);
224 pos += ieee802154_hdr_get_addr(buf + pos, hdr->fc.source_addr_mode,
225 hdr->fc.intra_pan, &hdr->source);
227 if (hdr->fc.intra_pan)
228 hdr->source.pan_id = hdr->dest.pan_id;
234 ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr)
241 memcpy(hdr, skb->data, 3);
243 rc = ieee802154_hdr_minlen(hdr);
247 pos += ieee802154_hdr_get_addrs(skb->data + pos, hdr);
249 if (hdr->fc.security_enabled) {
255 pos += ieee802154_hdr_get_sechdr(skb->data + pos, &hdr->sec);
264 ieee802154_hdr_peek_addrs(const struct sk_buff *skb, struct ieee802154_hdr *hdr)
272 memcpy(hdr, buf, 3);
274 rc = ieee802154_hdr_minlen(hdr);
278 pos += ieee802154_hdr_get_addrs(buf + pos, hdr);
284 ieee802154_hdr_peek(const struct sk_buff *skb, struct ieee802154_hdr *hdr)
289 pos = ieee802154_hdr_peek_addrs(skb, hdr);
293 if (hdr->fc.security_enabled) {
300 pos += ieee802154_hdr_get_sechdr(buf + pos, &hdr->sec);
307 int ieee802154_max_payload(const struct ieee802154_hdr *hdr)
309 int hlen = ieee802154_hdr_minlen(hdr);
311 if (hdr->fc.security_enabled) {
312 hlen += ieee802154_sechdr_lengths[hdr->sec.key_id_mode] - 1;
313 hlen += ieee802154_sechdr_authtag_len(&hdr->sec);