mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is released under the GPL.
|
|
*
|
|
* Multipath hardware handler registration.
|
|
*/
|
|
|
|
#ifndef DM_HW_HANDLER_H
|
|
#define DM_HW_HANDLER_H
|
|
|
|
#include <linux/device-mapper.h>
|
|
|
|
#include "dm-mpath.h"
|
|
|
|
struct hw_handler_type;
|
|
struct hw_handler {
|
|
struct hw_handler_type *type;
|
|
void *context;
|
|
};
|
|
|
|
/*
|
|
* Constructs a hardware handler object, takes custom arguments
|
|
*/
|
|
/* Information about a hardware handler type */
|
|
struct hw_handler_type {
|
|
char *name;
|
|
struct module *module;
|
|
|
|
int (*create) (struct hw_handler *handler, unsigned int argc,
|
|
char **argv);
|
|
void (*destroy) (struct hw_handler *hwh);
|
|
|
|
void (*pg_init) (struct hw_handler *hwh, unsigned bypassed,
|
|
struct path *path);
|
|
unsigned (*error) (struct hw_handler *hwh, struct bio *bio);
|
|
int (*status) (struct hw_handler *hwh, status_type_t type,
|
|
char *result, unsigned int maxlen);
|
|
};
|
|
|
|
/* Register a hardware handler */
|
|
int dm_register_hw_handler(struct hw_handler_type *type);
|
|
|
|
/* Unregister a hardware handler */
|
|
int dm_unregister_hw_handler(struct hw_handler_type *type);
|
|
|
|
/* Returns a registered hardware handler type */
|
|
struct hw_handler_type *dm_get_hw_handler(const char *name);
|
|
|
|
/* Releases a hardware handler */
|
|
void dm_put_hw_handler(struct hw_handler_type *hwht);
|
|
|
|
/* Default err function */
|
|
unsigned dm_scsi_err_handler(struct hw_handler *hwh, struct bio *bio);
|
|
|
|
/* Error flags for err and dm_pg_init_complete */
|
|
#define MP_FAIL_PATH 1
|
|
#define MP_BYPASS_PG 2
|
|
#define MP_ERROR_IO 4 /* Don't retry this I/O */
|
|
|
|
#endif
|