/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _LIBPCP_H
#define _LIBPCP_H

#ifdef  __cplusplus
extern "C" {
#endif

#define PCPL_MAX_TRY_CNT        5
#define PCP_CLEANUP_TIMEOUT     3

#define PCPL_DEF_MTU_SZ         100


#define PCPL_IO_OP_READ         (1)
#define PCPL_IO_OP_WRITE        (2)
#define PCPL_IO_OP_PEEK         (3)

/*
 * sleep (seconds) for glvc call failures before
 * retrying.
 */
#define PCPL_GLVC_SLEEP         (5)

/*
 * Error codes for pcp library that are
 * returned to users applications.
 */
#define PCPL_OK                 0
#define PCPL_ERROR              (-1)
#define PCPL_INVALID_ARGS       (-2)
#define PCPL_GLVC_ERROR         (-3)
#define PCPL_XPORT_ERROR        (-4)
#define PCPL_MALLOC_FAIL        (-5)
#define PCPL_GLVC_TIMEOUT       (-6)
#define PCPL_FRAME_ERROR        (-7)
#define PCPL_CKSUM_ERROR        (-8)
#define PCPL_PROT_ERROR         (-9)

/* common defines */
#ifndef MIN
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#endif
#ifndef MAX
#define MAX(x, y) ((x) > (y) ? (x) : (y))
#endif
#ifndef ABS
#define ABS(x)  ((x) < (0) ? (-(x)) : (x))
#endif

/*
 * PCP user apps message format
 */
typedef struct pcp_msg {
        uint8_t msg_type;
        uint8_t sub_type;
        uint16_t rsvd_pad;
        uint32_t msg_len;
        void *msg_data;
} pcp_msg_t;

int pcp_init(char *channel_name);
int pcp_send_recv(int channel_fd, pcp_msg_t *req_msg, pcp_msg_t *resp_msg,
                        uint32_t timeout);
int pcp_close(int channel_fd);

#ifdef  __cplusplus
}
#endif

#endif /* _LIBPCP_H */