integrated scsi_transport_iscsi.[ch]

git-svn-id: svn://svn.berlios.de/open-iscsi@268 d7303112-9cec-0310-bdd2-e83a94d6c2b6

1 files changed, 88 insertions, 0 deletions

diff --git a/kernel/scsi_transport_iscsi.h b/kernel/scsi_transport_iscsi.h
new file mode 100644
index 0000000..4c506f8
--- /dev/null
+++ b/kernel/scsi_transport_iscsi.h
@@ -0,0 +1,88 @@
+/*
+ * iSCSI transport class definitions
+ *
+ * Copyright (C) IBM Corporation, 2004
+ * Copyright (C) Mike Christie, Dmitry Yusupov, Alex Aizman, 2004 - 2005
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#ifndef SCSI_TRANSPORT_ISCSI_H
+#define SCSI_TRANSPORT_ISCSI_H
+
+#include <iscsi_if.h>
+
+/**
+ * struct iscsi_transport - iSCSI Transport template
+ *
+ * @name:        transport name
+ * @caps:        iSCSI Data-Path capabilities
+ * @create_snx:  create new iSCSI session object
+ * @destroy_snx: destroy existing iSCSI session object
+ * @create_cnx:  create new iSCSI connection
+ * @bind_cnx:    associate this connection with existing iSCSI session and
+ *               specified transport descriptor
+ * @destroy_cnx: destroy inactive iSCSI connection
+ * @set_param:   set iSCSI Data-Path operational parameter
+ * @start_cnx:   set connection to be operational
+ * @stop_cnx:    suspend/recover/terminate connection
+ * @send_pdu:    send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
+ *
+ * Template API provided by iSCSI Transport
+ */
+struct iscsi_transport {
+	struct module *owner;
+	char *name;
+	unsigned int caps;
+	struct scsi_host_template *host_template;
+	int hostdata_size;
+	int max_lun;
+	unsigned int max_cnx;
+	unsigned int max_cmd_len;
+	iscsi_snx_t (*create_session) (uint32_t initial_cmdsn,
+				       struct Scsi_Host *shost);
+	void (*destroy_session) (iscsi_snx_t snx);
+	iscsi_cnx_t (*create_cnx) (iscsi_snx_t snx, uint32_t cid);
+	int (*bind_cnx) (iscsi_snx_t snx, iscsi_cnx_t cnx,
+			uint32_t transport_fd, int is_leading);
+	int (*start_cnx) (iscsi_cnx_t cnx);
+	void (*stop_cnx) (iscsi_cnx_t cnx, int flag);
+	void (*destroy_cnx) (iscsi_cnx_t cnx);
+	int (*set_param) (iscsi_cnx_t cnx, enum iscsi_param param,
+			  uint32_t value);
+	int (*get_param) (iscsi_cnx_t cnx, enum iscsi_param param,
+			  uint32_t *value);
+	int (*send_pdu) (iscsi_cnx_t cnx, struct iscsi_hdr *hdr,
+			 char *data, uint32_t data_size);
+	void (*get_stats) (iscsi_cnx_t cnx, struct iscsi_stats *stats);
+	/*
+	 * transport class private data
+	 */
+	struct scsi_transport_template *scsi_transport;
+};
+
+/*
+ * transport registration upcalls
+ */
+extern int iscsi_register_transport(struct iscsi_transport *tt);
+extern int iscsi_unregister_transport(struct iscsi_transport *tt);
+
+/*
+ * control plane upcalls
+ */
+extern void iscsi_cnx_error(iscsi_cnx_t cnx, enum iscsi_err error);
+extern int iscsi_recv_pdu(iscsi_cnx_t cnx, struct iscsi_hdr *hdr,
+				char *data, uint32_t data_size);
+
+#endif