396 	struct mptcp_ext *mpext;  in mptcp_established_options_mp()  local
414 		mpext = mptcp_get_ext(skb);  in mptcp_established_options_mp()
415 		data_len = mpext ? mpext->data_len : 0;  in mptcp_established_options_mp()
490 	struct mptcp_ext *mpext;  in mptcp_established_options_dss()  local
494 	mpext = skb ? mptcp_get_ext(skb) : NULL;  in mptcp_established_options_dss()
497 	if (!skb || (mpext && mpext->use_map) || snd_data_fin_enable) {  in mptcp_established_options_dss()
504 		if (mpext)  in mptcp_established_options_dss()
505 			opts->ext_copy = *mpext;  in mptcp_established_options_dss()
887 	struct mptcp_ext *mpext;  in mptcp_incoming_options()  local
949 	mpext = skb_ext_add(skb, SKB_EXT_MPTCP);  in mptcp_incoming_options()
950 	if (!mpext)  in mptcp_incoming_options()
953 	memset(mpext, 0, sizeof(*mpext));  in mptcp_incoming_options()
961 					     &mpext->data_seq);  in mptcp_incoming_options()
962 			mpext->data_seq++;  in mptcp_incoming_options()
963 			mpext->subflow_seq = 1;  in mptcp_incoming_options()
964 			mpext->dsn64 = 1;  in mptcp_incoming_options()
965 			mpext->mpc_map = 1;  in mptcp_incoming_options()
966 			mpext->data_fin = 0;  in mptcp_incoming_options()
968 			mpext->data_seq = mp_opt.data_seq;  in mptcp_incoming_options()
969 			mpext->subflow_seq = mp_opt.subflow_seq;  in mptcp_incoming_options()
970 			mpext->dsn64 = mp_opt.dsn64;  in mptcp_incoming_options()
971 			mpext->data_fin = mp_opt.data_fin;  in mptcp_incoming_options()
973 		mpext->data_len = mp_opt.data_len;  in mptcp_incoming_options()
974 		mpext->use_map = 1;  in mptcp_incoming_options()
1089 		struct mptcp_ext *mpext = &opts->ext_copy;  in mptcp_write_options()  local
1093 		if (mpext->use_ack) {  in mptcp_write_options()
1095 			if (mpext->ack64) {  in mptcp_write_options()
1103 		if (mpext->use_map) {  in mptcp_write_options()
1110 			if (mpext->data_fin)  in mptcp_write_options()
1116 		if (mpext->use_ack) {  in mptcp_write_options()
1117 			if (mpext->ack64) {  in mptcp_write_options()
1118 				put_unaligned_be64(mpext->data_ack, ptr);  in mptcp_write_options()
1121 				put_unaligned_be32(mpext->data_ack32, ptr);  in mptcp_write_options()
1126 		if (mpext->use_map) {  in mptcp_write_options()
1127 			put_unaligned_be64(mpext->data_seq, ptr);  in mptcp_write_options()
1129 			put_unaligned_be32(mpext->subflow_seq, ptr);  in mptcp_write_options()
1131 			put_unaligned_be32(mpext->data_len << 16 |  in mptcp_write_options()