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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_RBD_GGATE_GGATE_DRV_H
#define CEPH_RBD_GGATE_GGATE_DRV_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/param.h>
#include <stdbool.h>
#include <stdint.h>
typedef void *ggate_drv_t;
typedef void *ggate_drv_req_t;
/*
* GGATE driver commands. They are mapped to GgateReq::Command.
*/
enum {
GGATE_DRV_CMD_UNKNOWN = 0,
GGATE_DRV_CMD_WRITE = 1,
GGATE_DRV_CMD_READ = 2,
GGATE_DRV_CMD_FLUSH = 3,
GGATE_DRV_CMD_DISCARD = 4,
};
struct ggate_drv_info {
char id[16];
char name[NAME_MAX];
char info[2048]; /* G_GATE_INFOSIZE */
};
uint64_t ggate_drv_req_id(ggate_drv_req_t req);
int ggate_drv_req_cmd(ggate_drv_req_t req);
void *ggate_drv_req_buf(ggate_drv_req_t req);
size_t ggate_drv_req_length(ggate_drv_req_t req);
uint64_t ggate_drv_req_offset(ggate_drv_req_t req);
int ggate_drv_req_error(ggate_drv_req_t req);
void ggate_drv_req_set_error(ggate_drv_req_t req, int error);
void *ggate_drv_req_release_buf(ggate_drv_req_t req);
int ggate_drv_load();
int ggate_drv_create(char *name, size_t namelen, size_t sectorsize,
size_t mediasize, bool readonly, const char *info, ggate_drv_t *drv);
void ggate_drv_destroy(ggate_drv_t drv);
int ggate_drv_recv(ggate_drv_t drv, ggate_drv_req_t *req);
int ggate_drv_send(ggate_drv_t drv, ggate_drv_req_t req);
int ggate_drv_resize(ggate_drv_t drv, size_t newsize);
int ggate_drv_kill(const char *devname);
int ggate_drv_list(struct ggate_drv_info *info, size_t *size);
#ifdef __cplusplus
}
#endif
#endif // CEPH_RBD_GGATE_GGATE_DRV_H
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