127 	struct mptcp_ext *mpext = skb_ext_add(skb, SKB_EXT_MPTCP);  in subflow_add_reset_reason()  local
129 	if (mpext) {  in subflow_add_reset_reason()
130 		memset(mpext, 0, sizeof(*mpext));  in subflow_add_reset_reason()
131 		mpext->reset_reason = reason;  in subflow_add_reset_reason()
307 	const struct mptcp_ext *mpext = mptcp_get_ext(skb);  in mptcp_get_rst_reason()  local
309 	if (!mpext)  in mptcp_get_rst_reason()
312 	return sk_rst_convert_mptcp_reason(mpext->reset_reason);  in mptcp_get_rst_reason()
1103 	struct mptcp_ext *mpext;  in get_mapping_status()  local
1115 	mpext = mptcp_get_ext(skb);  in get_mapping_status()
1116 	if (!mpext || !mpext->use_map) {  in get_mapping_status()
1137 	trace_get_mapping_status(mpext);  in get_mapping_status()
1139 	data_len = mpext->data_len;  in get_mapping_status()
1147 	if (mpext->data_fin == 1) {  in get_mapping_status()
1151 			bool updated = mptcp_update_rcv_data_fin(msk, mpext->data_seq,  in get_mapping_status()
1152 								 mpext->dsn64);  in get_mapping_status()
1153 			pr_debug("DATA_FIN with no payload seq=%llu\n", mpext->data_seq);  in get_mapping_status()
1170 		data_fin_seq = mpext->data_seq + data_len - 1;  in get_mapping_status()
1175 		if (!mpext->dsn64)  in get_mapping_status()
1178 		mptcp_update_rcv_data_fin(msk, data_fin_seq, mpext->dsn64);  in get_mapping_status()
1180 			 data_fin_seq, mpext->dsn64);  in get_mapping_status()
1186 	map_seq = mptcp_expand_seq(READ_ONCE(msk->ack_seq), mpext->data_seq, mpext->dsn64);  in get_mapping_status()
1187 	WRITE_ONCE(mptcp_sk(subflow->conn)->use_64bit_ack, !!mpext->dsn64);  in get_mapping_status()
1192 		    subflow->map_subflow_seq == mpext->subflow_seq &&  in get_mapping_status()
1194 		    subflow->map_csum_reqd == mpext->csum_reqd) {  in get_mapping_status()
1212 	subflow->map_subflow_seq = mpext->subflow_seq;  in get_mapping_status()
1215 	subflow->map_data_fin = mpext->data_fin;  in get_mapping_status()
1216 	subflow->mpc_map = mpext->mpc_map;  in get_mapping_status()
1217 	subflow->map_csum_reqd = mpext->csum_reqd;  in get_mapping_status()
1219 	subflow->map_data_csum = csum_unfold(mpext->csum);  in get_mapping_status()