diff options
Diffstat (limited to 'sys/scsi/mpathvar.h')
| -rw-r--r-- | sys/scsi/mpathvar.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sys/scsi/mpathvar.h b/sys/scsi/mpathvar.h new file mode 100644 index 00000000000..8a1357a500b --- /dev/null +++ b/sys/scsi/mpathvar.h @@ -0,0 +1,55 @@ +/* $OpenBSD: mpathvar.h,v 1.1 2011/04/05 14:25:42 dlg Exp $ */ + +/* + * Copyright (c) 2010 David Gwynne <dlg@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _SYS_SCSI_MPATH_H_ +#define _SYS_SCSI_MPATH_H_ + +struct mpath_dev; +struct mpath_group; + +struct mpath_ops { + char op_name[16]; + void (*op_start)(struct scsi_xfer *); + int (*op_checksense)(struct scsi_xfer *); + int (*op_online)(struct scsi_link *); + int (*op_offline)(struct scsi_link *); +}; + +struct mpath_path { + /* the path driver must set these */ + struct scsi_xshandler p_xsh; + struct scsi_link *p_link; + struct mpath_ops *p_ops; + int p_gid; + + /* the follwoing are private to mpath.c */ + TAILQ_ENTRY(mpath_path) p_entry; + struct mpath_dev *p_dev; + int p_state; +}; + +int mpath_path_probe(struct scsi_link *); +int mpath_path_attach(struct mpath_path *); +void mpath_path_state(struct mpath_path *, int); +int mpath_path_detach(struct mpath_path *); + +void mpath_start(struct mpath_path *, struct scsi_xfer *); + +struct device *mpath_bootdv(struct device *); + +#endif /* _SYS_SCSI_MPATH_H_ */ |