240 	const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + offset);  in dccp_v4_err()  local
250 	if (skb->len < offset + sizeof(*dh) ||  in dccp_v4_err()
251 	    skb->len < offset + __dccp_basic_hdr_len(dh)) {  in dccp_v4_err()
257 				       iph->daddr, dh->dccph_dport,  in dccp_v4_err()
258 				       iph->saddr, ntohs(dh->dccph_sport),  in dccp_v4_err()
269 	seq = dccp_hdr_seq(dh);  in dccp_v4_err()
370 	struct dccp_hdr *dh = dccp_hdr(skb);  in dccp_v4_send_check()  local
373 	dh->dccph_checksum = dccp_v4_csum_finish(skb,  in dccp_v4_send_check()
448 	const struct dccp_hdr *dh = dccp_hdr(skb);  in dccp_v4_hnd_req()  local
452 	struct request_sock *req = inet_csk_search_req(sk, dh->dccph_sport,  in dccp_v4_hnd_req()
461 				      iph->saddr, dh->dccph_sport,  in dccp_v4_hnd_req()
462 				      iph->daddr, dh->dccph_dport,  in dccp_v4_hnd_req()
515 		struct dccp_hdr *dh = dccp_hdr(skb);  in dccp_v4_send_response()  local
517 		dh->dccph_checksum = dccp_v4_csum_finish(skb, ireq->ir_loc_addr,  in dccp_v4_send_response()
676 	struct dccp_hdr *dh = dccp_hdr(skb);  in dccp_v4_do_rcv()  local
679 		if (dccp_rcv_established(sk, skb, dh, skb->len))  in dccp_v4_do_rcv()
720 	if (dccp_rcv_state_process(sk, skb, dh, skb->len))  in dccp_v4_do_rcv()
739 	const struct dccp_hdr *dh;  in dccp_invalid_packet()  local
751 	dh = dccp_hdr(skb);  in dccp_invalid_packet()
754 	if (dh->dccph_type >= DCCP_PKT_INVALID) {  in dccp_invalid_packet()
762 	if (dh->dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) {  in dccp_invalid_packet()
763 		DCCP_WARN("P.Data Offset(%u) too small\n", dh->dccph_doff);  in dccp_invalid_packet()
769 	if (!pskb_may_pull(skb, dh->dccph_doff * sizeof(u32))) {  in dccp_invalid_packet()
770 		DCCP_WARN("P.Data Offset(%u) too large\n", dh->dccph_doff);  in dccp_invalid_packet()
778 	if ((dh->dccph_type < DCCP_PKT_DATA    ||  in dccp_invalid_packet()
779 	    dh->dccph_type > DCCP_PKT_DATAACK) && dh->dccph_x == 0)  {  in dccp_invalid_packet()
781 			  dccp_packet_name(dh->dccph_type));  in dccp_invalid_packet()
792 			  dh->dccph_cscov, skb->len);  in dccp_invalid_packet()
807 	const struct dccp_hdr *dh;  in dccp_v4_rcv()  local
824 	dh = dccp_hdr(skb);  in dccp_v4_rcv()
826 	DCCP_SKB_CB(skb)->dccpd_seq  = dccp_hdr_seq(dh);  in dccp_v4_rcv()
827 	DCCP_SKB_CB(skb)->dccpd_type = dh->dccph_type;  in dccp_v4_rcv()
830 		      dccp_packet_name(dh->dccph_type),  in dccp_v4_rcv()
831 		      &iph->saddr, ntohs(dh->dccph_sport),  in dccp_v4_rcv()
832 		      &iph->daddr, ntohs(dh->dccph_dport),  in dccp_v4_rcv()
847 			       dh->dccph_sport, dh->dccph_dport);  in dccp_v4_rcv()
876 	if (dh->dccph_cscov && (min_cov == 0 || dh->dccph_cscov < min_cov))  {  in dccp_v4_rcv()
878 			      dh->dccph_cscov, min_cov);  in dccp_v4_rcv()
900 	if (dh->dccph_type != DCCP_PKT_RESET) {  in dccp_v4_rcv()