52 		       struct sk_buff *skb)  in dccp_parse_options()  argument
55 	const struct dccp_hdr *dh = dccp_hdr(skb);  in dccp_parse_options()
56 	const u8 pkt_type = DCCP_SKB_CB(skb)->dccpd_type;  in dccp_parse_options()
57 	unsigned char *options = (unsigned char *)dh + dccp_hdr_len(skb);  in dccp_parse_options()
158 				      DCCP_SKB_CB(skb)->dccpd_ack_seq);  in dccp_parse_options()
174 				      DCCP_SKB_CB(skb)->dccpd_ack_seq);  in dccp_parse_options()
198 			if (dccp_packet_without_ack(skb))   /* RFC 4340, 13.2 */  in dccp_parse_options()
224 			if (dccp_packet_without_ack(skb))   /* RFC 4340, 11.4 */  in dccp_parse_options()
260 	DCCP_SKB_CB(skb)->dccpd_reset_code = rc;  in dccp_parse_options()
261 	DCCP_SKB_CB(skb)->dccpd_reset_data[0] = opt;  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()
292 int dccp_insert_option(struct sk_buff *skb, const unsigned char option,  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()
312 static int dccp_insert_option_ndp(struct sock *sk, struct sk_buff *skb)  in dccp_insert_option_ndp()  argument
317 	if (dccp_non_data_packet(skb))  in dccp_insert_option_ndp()
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()
346 static int dccp_insert_option_timestamp(struct sk_buff *skb)  in dccp_insert_option_timestamp()  argument
352 	return dccp_insert_option(skb, DCCPO_TIMESTAMP, &now, sizeof(now));  in dccp_insert_option_timestamp()
357 					     struct sk_buff *skb)  in dccp_insert_option_timestamp_echo()  argument
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()
399 static int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)  in dccp_insert_option_ackvec()  argument
403 	struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);  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()
432 	to   = skb_push(skb, len);  in dccp_insert_option_ackvec()
481 int dccp_insert_option_mandatory(struct sk_buff *skb)  in dccp_insert_option_mandatory()  argument
483 	if (DCCP_SKB_CB(skb)->dccpd_opt_len >= DCCP_MAX_OPT_LEN)  in dccp_insert_option_mandatory()
486 	DCCP_SKB_CB(skb)->dccpd_opt_len++;  in dccp_insert_option_mandatory()
487 	*skb_push(skb, 1) = DCCPO_MANDATORY;  in dccp_insert_option_mandatory()
504 int dccp_insert_fn_opt(struct sk_buff *skb, u8 type, u8 feat,  in dccp_insert_fn_opt()  argument
519 	if (DCCP_SKB_CB(skb)->dccpd_opt_len + tot_len > DCCP_MAX_OPT_LEN) {  in dccp_insert_fn_opt()
523 	DCCP_SKB_CB(skb)->dccpd_opt_len += tot_len;  in dccp_insert_fn_opt()
525 	to    = skb_push(skb, tot_len);  in dccp_insert_fn_opt()
538 static void dccp_insert_option_padding(struct sk_buff *skb)  in dccp_insert_option_padding()  argument
540 	int padding = DCCP_SKB_CB(skb)->dccpd_opt_len % 4;  in dccp_insert_option_padding()
544 		memset(skb_push(skb, padding), 0, padding);  in dccp_insert_option_padding()
545 		DCCP_SKB_CB(skb)->dccpd_opt_len += padding;  in dccp_insert_option_padding()
549 int dccp_insert_options(struct sock *sk, struct sk_buff *skb)  in dccp_insert_options()  argument
553 	DCCP_SKB_CB(skb)->dccpd_opt_len = 0;  in dccp_insert_options()
555 	if (dp->dccps_send_ndp_count && dccp_insert_option_ndp(sk, skb))  in dccp_insert_options()
558 	if (DCCP_SKB_CB(skb)->dccpd_type != DCCP_PKT_DATA) {  in dccp_insert_options()
561 		if (dccp_feat_insert_opts(dp, NULL, skb))  in dccp_insert_options()
564 		if (DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_REQUEST) {  in dccp_insert_options()
569 			if (dccp_insert_option_timestamp(skb))  in dccp_insert_options()
573 			   dccp_insert_option_ackvec(sk, skb)) {  in dccp_insert_options()
579 		if (ccid_hc_rx_insert_options(dp->dccps_hc_rx_ccid, sk, skb))  in dccp_insert_options()
585 	    dccp_insert_option_timestamp_echo(dp, NULL, skb))  in dccp_insert_options()
588 	dccp_insert_option_padding(skb);  in dccp_insert_options()
592 int dccp_insert_options_rsk(struct dccp_request_sock *dreq, struct sk_buff *skb)  in dccp_insert_options_rsk()  argument
594 	DCCP_SKB_CB(skb)->dccpd_opt_len = 0;  in dccp_insert_options_rsk()
596 	if (dccp_feat_insert_opts(NULL, dreq, skb))  in dccp_insert_options_rsk()
600 	if (dccp_insert_option_timestamp(skb))  in dccp_insert_options_rsk()
604 	    dccp_insert_option_timestamp_echo(NULL, dreq, skb))  in dccp_insert_options_rsk()
607 	dccp_insert_option_padding(skb);  in dccp_insert_options_rsk()