26 u64 dccp_decode_value_var(const u8 *bf, const u8 len)  in dccp_decode_value_var()  argument
30 	if (len >= DCCP_OPTVAL_MAXLEN)  in dccp_decode_value_var()
32 	if (len > 4)  in dccp_decode_value_var()
34 	if (len > 3)  in dccp_decode_value_var()
36 	if (len > 2)  in dccp_decode_value_var()
38 	if (len > 1)  in dccp_decode_value_var()
40 	if (len > 0)  in dccp_decode_value_var()
62 	unsigned char opt, len;  in dccp_parse_options()  local
71 	opt = len = 0;  in dccp_parse_options()
74 		len   = 0;  in dccp_parse_options()
82 			len = *opt_ptr++;  in dccp_parse_options()
83 			if (len < 2)  in dccp_parse_options()
89 			len	-= 2;  in dccp_parse_options()
91 			opt_ptr += len;  in dccp_parse_options()
116 			if (len > 6)  in dccp_parse_options()
119 			opt_recv->dccpor_ndp = dccp_decode_value_var(value, len);  in dccp_parse_options()
126 			if (len == 0)  in dccp_parse_options()
129 						    *value, value + 1, len - 1);  in dccp_parse_options()
134 			if (len != 4)  in dccp_parse_options()
163 			if (len != 4 && len != 6 && len != 8)  in dccp_parse_options()
172 				      len + 2,  in dccp_parse_options()
178 			if (len == 4) {		/* no elapsed time included */  in dccp_parse_options()
183 			if (len == 6) {		/* 2-byte elapsed time */  in dccp_parse_options()
201 			if (len == 2) {  in dccp_parse_options()
204 			} else if (len == 4) {  in dccp_parse_options()
219 						     pkt_type, opt, value, len))  in dccp_parse_options()
234 						     pkt_type, opt, value, len))  in dccp_parse_options()
239 				  "implemented, ignoring", sk, opt, len);  in dccp_parse_options()
259 	DCCP_WARN("DCCP(%p): Option %d (len=%d) error=%u\n", sk, opt, len, rc);  in dccp_parse_options()
262 	DCCP_SKB_CB(skb)->dccpd_reset_data[1] = len > 0 ? value[0] : 0;  in dccp_parse_options()
263 	DCCP_SKB_CB(skb)->dccpd_reset_data[2] = len > 1 ? value[1] : 0;  in dccp_parse_options()
269 void dccp_encode_value_var(const u64 value, u8 *to, const u8 len)  in dccp_encode_value_var()  argument
271 	if (len >= DCCP_OPTVAL_MAXLEN)  in dccp_encode_value_var()
273 	if (len > 4)  in dccp_encode_value_var()
275 	if (len > 3)  in dccp_encode_value_var()
277 	if (len > 2)  in dccp_encode_value_var()
279 	if (len > 1)  in dccp_encode_value_var()
281 	if (len > 0)  in dccp_encode_value_var()
293 		       const void *value, const unsigned char len)  in dccp_insert_option()  argument
297 	if (DCCP_SKB_CB(skb)->dccpd_opt_len + len + 2 > DCCP_MAX_OPT_LEN)  in dccp_insert_option()
300 	DCCP_SKB_CB(skb)->dccpd_opt_len += len + 2;  in dccp_insert_option()
302 	to    = skb_push(skb, len + 2);  in dccp_insert_option()
304 	*to++ = len + 2;  in dccp_insert_option()
306 	memcpy(to, value, len);  in dccp_insert_option()
325 		const int len = ndp_len + 2;  in dccp_insert_option_ndp()  local
327 		if (DCCP_SKB_CB(skb)->dccpd_opt_len + len > DCCP_MAX_OPT_LEN)  in dccp_insert_option_ndp()
330 		DCCP_SKB_CB(skb)->dccpd_opt_len += len;  in dccp_insert_option_ndp()
332 		ptr = skb_push(skb, len);  in dccp_insert_option_ndp()
334 		*ptr++ = len;  in dccp_insert_option_ndp()
361 	u32 elapsed_time, elapsed_time_len, len;  in dccp_insert_option_timestamp_echo()  local
374 	len = 6 + elapsed_time_len;  in dccp_insert_option_timestamp_echo()
376 	if (DCCP_SKB_CB(skb)->dccpd_opt_len + len > DCCP_MAX_OPT_LEN)  in dccp_insert_option_timestamp_echo()
379 	DCCP_SKB_CB(skb)->dccpd_opt_len += len;  in dccp_insert_option_timestamp_echo()
381 	to    = skb_push(skb, len);  in dccp_insert_option_timestamp_echo()
383 	*to++ = len;  in dccp_insert_option_timestamp_echo()
407 	u16 len = buflen + 2 * nr_opts;  in dccp_insert_option_ackvec()  local
412 	if (dcb->dccpd_opt_len + len > DCCP_MAX_OPT_LEN) {  in dccp_insert_option_ackvec()
413 		DCCP_WARN("Lacking space for %u bytes on %s packet\n", len,  in dccp_insert_option_ackvec()
422 	if (len > DCCPAV_MIN_OPTLEN &&  in dccp_insert_option_ackvec()
423 	    len + dcb->dccpd_opt_len + skb->len > dp->dccps_mss_cache) {  in dccp_insert_option_ackvec()
425 			  "MPS=%u ==> reduce payload size?\n", len, skb->len,  in dccp_insert_option_ackvec()
430 	dcb->dccpd_opt_len += len;  in dccp_insert_option_ackvec()
432 	to   = skb_push(skb, len);  in dccp_insert_option_ackvec()
433 	len  = buflen;  in dccp_insert_option_ackvec()
438 		int copylen = len;  in dccp_insert_option_ackvec()
440 		if (len > DCCP_SINGLE_OPT_MAXLEN)  in dccp_insert_option_ackvec()
458 			len	-= tailsize;  in dccp_insert_option_ackvec()
466 		len  -= copylen;  in dccp_insert_option_ackvec()
505 		       u8 *val, u8 len, bool repeat_first)  in dccp_insert_fn_opt()  argument
510 	if (len > (DCCP_SINGLE_OPT_MAXLEN - 2)) {  in dccp_insert_fn_opt()
511 		DCCP_WARN("length %u for feature %u too large\n", len, feat);  in dccp_insert_fn_opt()
515 	if (unlikely(val == NULL || len == 0))  in dccp_insert_fn_opt()
516 		len = repeat_first = false;  in dccp_insert_fn_opt()
517 	tot_len = 3 + repeat_first + len;  in dccp_insert_fn_opt()
532 	if (len)  in dccp_insert_fn_opt()
533 		memcpy(to, val, len);  in dccp_insert_fn_opt()