11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * iSCSI transport class definitions 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) IBM Corporation, 2004 539e84790SAlex Aizman * Copyright (C) Mike Christie, 2004 - 2005 639e84790SAlex Aizman * Copyright (C) Dmitry Yusupov, 2004 - 2005 739e84790SAlex Aizman * Copyright (C) Alex Aizman, 2004 - 2005 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify 101da177e4SLinus Torvalds * it under the terms of the GNU General Public License as published by 111da177e4SLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 121da177e4SLinus Torvalds * (at your option) any later version. 131da177e4SLinus Torvalds * 141da177e4SLinus Torvalds * This program is distributed in the hope that it will be useful, 151da177e4SLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 161da177e4SLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 171da177e4SLinus Torvalds * GNU General Public License for more details. 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 201da177e4SLinus Torvalds * along with this program; if not, write to the Free Software 211da177e4SLinus Torvalds * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 221da177e4SLinus Torvalds */ 231da177e4SLinus Torvalds #ifndef SCSI_TRANSPORT_ISCSI_H 241da177e4SLinus Torvalds #define SCSI_TRANSPORT_ISCSI_H 251da177e4SLinus Torvalds 2639e84790SAlex Aizman #include <scsi/iscsi_if.h> 271da177e4SLinus Torvalds 2839e84790SAlex Aizman /** 2939e84790SAlex Aizman * struct iscsi_transport - iSCSI Transport template 3039e84790SAlex Aizman * 3139e84790SAlex Aizman * @name: transport name 3239e84790SAlex Aizman * @caps: iSCSI Data-Path capabilities 3339e84790SAlex Aizman * @create_session: create new iSCSI session object 3439e84790SAlex Aizman * @destroy_session: destroy existing iSCSI session object 3539e84790SAlex Aizman * @create_conn: create new iSCSI connection 3639e84790SAlex Aizman * @bind_conn: associate this connection with existing iSCSI session 3739e84790SAlex Aizman * and specified transport descriptor 3839e84790SAlex Aizman * @destroy_conn: destroy inactive iSCSI connection 3939e84790SAlex Aizman * @set_param: set iSCSI Data-Path operational parameter 4039e84790SAlex Aizman * @start_conn: set connection to be operational 4139e84790SAlex Aizman * @stop_conn: suspend/recover/terminate connection 4239e84790SAlex Aizman * @send_pdu: send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text. 4339e84790SAlex Aizman * 4439e84790SAlex Aizman * Template API provided by iSCSI Transport 4539e84790SAlex Aizman */ 4639e84790SAlex Aizman struct iscsi_transport { 4739e84790SAlex Aizman struct module *owner; 4839e84790SAlex Aizman char *name; 4939e84790SAlex Aizman unsigned int caps; 5039e84790SAlex Aizman struct scsi_host_template *host_template; 5139e84790SAlex Aizman int hostdata_size; 5239e84790SAlex Aizman int max_lun; 5339e84790SAlex Aizman unsigned int max_conn; 5439e84790SAlex Aizman unsigned int max_cmd_len; 5539e84790SAlex Aizman iscsi_sessionh_t (*create_session) (uint32_t initial_cmdsn, 5639e84790SAlex Aizman struct Scsi_Host *shost); 5739e84790SAlex Aizman void (*destroy_session) (iscsi_sessionh_t session); 5839e84790SAlex Aizman iscsi_connh_t (*create_conn) (iscsi_sessionh_t session, uint32_t cid); 5939e84790SAlex Aizman int (*bind_conn) (iscsi_sessionh_t session, iscsi_connh_t conn, 6039e84790SAlex Aizman uint32_t transport_fd, int is_leading); 6139e84790SAlex Aizman int (*start_conn) (iscsi_connh_t conn); 6239e84790SAlex Aizman void (*stop_conn) (iscsi_connh_t conn, int flag); 6339e84790SAlex Aizman void (*destroy_conn) (iscsi_connh_t conn); 6439e84790SAlex Aizman int (*set_param) (iscsi_connh_t conn, enum iscsi_param param, 6539e84790SAlex Aizman uint32_t value); 6639e84790SAlex Aizman int (*get_param) (iscsi_connh_t conn, enum iscsi_param param, 6739e84790SAlex Aizman uint32_t *value); 6839e84790SAlex Aizman int (*send_pdu) (iscsi_connh_t conn, struct iscsi_hdr *hdr, 6939e84790SAlex Aizman char *data, uint32_t data_size); 7039e84790SAlex Aizman void (*get_stats) (iscsi_connh_t conn, struct iscsi_stats *stats); 711da177e4SLinus Torvalds }; 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds /* 7439e84790SAlex Aizman * transport registration upcalls 751da177e4SLinus Torvalds */ 7639e84790SAlex Aizman extern int iscsi_register_transport(struct iscsi_transport *tt); 7739e84790SAlex Aizman extern int iscsi_unregister_transport(struct iscsi_transport *tt); 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds /* 8039e84790SAlex Aizman * control plane upcalls 811da177e4SLinus Torvalds */ 8239e84790SAlex Aizman extern void iscsi_conn_error(iscsi_connh_t conn, enum iscsi_err error); 8339e84790SAlex Aizman extern int iscsi_recv_pdu(iscsi_connh_t conn, struct iscsi_hdr *hdr, 8439e84790SAlex Aizman char *data, uint32_t data_size); 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds #endif 87