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/*
* User/Kernel Transport IPC API Ioctl/NETLINK/etc
*
* Copyright (C) 2005 Dmitry Yusupov, Alex Aizman
* maintained by open-iscsi@googlegroups.com
*
* 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.
*
* See the file COPYING included with this distribution for more details.
*
* NOTE: OSes must implement this API in terms of user's control-plane re-use.
*/
#ifndef ISCSI_IPC_H
#define ISCSI_IPC_H
#if defined(FreeBSD)
#include <sys/_iovec.h>
#endif
#include "iscsi_if.h"
enum {
ISCSI_INT,
ISCSI_STRING,
};
struct iscsi_conn;
struct iscsi_ev_context;
/*
* When handling async events, the initiator may not be able to
* handle the event in the same context, so this allows the interface
* code to call into the initiator to shedule handling.
*/
struct iscsi_ipc_ev_clbk {
void (*create_session) (uint32_t host_no, uint32_t sid);
void (*destroy_session) (uint32_t host_no, uint32_t sid);
struct iscsi_ev_context *(*get_ev_context) (struct iscsi_conn *conn,
int ev_size);
void (*put_ev_context) (struct iscsi_ev_context *ev_context);
int (*sched_ev_context) (struct iscsi_ev_context *ev_context,
struct iscsi_conn *conn,
unsigned long tmo, int event);
};
extern void ipc_register_ev_callback(struct iscsi_ipc_ev_clbk *ipc_ev_clbk);
/**
* struct iscsi_ipc - Open-iSCSI Interface for Kernel IPC
*
* All functions allowed to return POSIX kind of error. i.e. 0 - OK, non-zero
* means IPC error and errno set.
*/
struct iscsi_ipc {
char *name;
int ctldev_bufmax;
int (*ctldev_open) (void);
void (*ctldev_close) (void);
int (*ctldev_handle) (void);
int (*sendtargets) (uint64_t transport_handle, uint32_t host_no,
struct sockaddr *addr);
int (*create_session) (uint64_t transport_handle, uint64_t ep_handle,
uint32_t initial_cmdsn, uint16_t cmds_max,
uint16_t qdepth, uint32_t *out_sid,
uint32_t *hostno);
int (*destroy_session) (uint64_t transport_handle, uint32_t sid);
int (*unbind_session) (uint64_t transport_handle, uint32_t sid);
int (*create_conn) (uint64_t transport_handle,
uint32_t sid, uint32_t cid, uint32_t *out_cid);
int (*destroy_conn) (uint64_t transport_handle, uint32_t sid,
uint32_t cid);
int (*bind_conn) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, uint64_t transport_eph,
int is_leading, int *retcode);
int (*set_param) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, enum iscsi_param param,
void *value, int type);
int (*set_host_param) (uint64_t transport_handle, uint32_t host_no,
enum iscsi_host_param param,
void *value, int type);
/* not implemented yet */
int (*get_param) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, enum iscsi_param param,
uint32_t *value, int *retcode);
int (*get_stats) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, char *statsbuf, int statsbuf_max);
int (*start_conn) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, int *retcode);
int (*stop_conn) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, int flag);
int (*read) (char *data, int count);
void (*send_pdu_begin) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, int hdr_size, int data_size);
int (*send_pdu_end) (uint64_t transport_handle, uint32_t sid,
uint32_t cid, int *retcode);
int (*writev) (enum iscsi_uevent_e type, struct iovec *iovp, int count);
int (*recv_pdu_begin) (struct iscsi_conn *conn);
int (*recv_pdu_end) (struct iscsi_conn *conn);
int (*set_net_config) (uint64_t transport_handle, uint32_t host_no,
struct iovec *iovs, uint32_t param_count);
int (*recv_conn_state) (struct iscsi_conn *conn, uint32_t *state);
};
#endif /* ISCSI_IPC_H */
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