185 	cpkt->delta = 0U;  in coap_packet_init()
248 static void option_header_set_delta(uint8_t *opt, uint8_t delta)  in option_header_set_delta()  argument
250 	*opt = (delta & 0xF) << 4;  in option_header_set_delta()
357 	if (code < cpkt->delta) {  in coap_packet_append_option()
364 		code = (code == cpkt->delta) ? 0 : code - cpkt->delta;  in coap_packet_append_option()
373 	cpkt->delta += code;  in coap_packet_append_option()
538 	uint16_t delta;  in parse_option()  local
556 	delta = option_header_get_delta(opt);  in parse_option()
563 	if (r == 0 && delta > COAP_OPTION_NO_EXT) {  in parse_option()
567 	if (delta > COAP_OPTION_NO_EXT) {  in parse_option()
570 				 delta, &delta, &hdr_len);  in parse_option()
593 	if (u16_add_overflow(*opt_delta, delta, opt_delta) ||  in parse_option()
620 		option->delta = *opt_delta;  in parse_option()
675 	r = encode_option(cpkt, option.delta - previous_code, option.value, option.len,  in remove_middle_option()
702 	if (code > cpkt->delta) {  in coap_packet_remove_option()
739 		cpkt->delta = previous_code;  in coap_packet_remove_option()
750 	uint16_t delta;  in coap_packet_parse()  local
772 	cpkt->delta = 0U;  in coap_packet_parse()
791 	delta = 0U;  in coap_packet_parse()
799 				   &delta, &opt_len, option);  in coap_packet_parse()
808 	cpkt->delta = delta;  in coap_packet_parse()
920 	uint16_t delta;  in coap_find_options()  local
931 	delta = 0U;  in coap_find_options()
934 	while (delta <= code && num < veclen) {  in coap_find_options()
936 				 cpkt->max_len, &delta, &opt_len,  in coap_find_options()
942 		if (code == options[num].delta) {  in coap_find_options()
1096 		if (options[i].delta != COAP_OPTION_URI_PATH) {  in coap_uri_path_match()
1127 		if (options[i].delta == COAP_OPTION_URI_PATH) {  in coap_uri_path_match()
1431 	r = encode_option(cpkt, option.delta - code, option.value, option.len, last_offset + r);  in insert_option()