8b522bdae6
While some geom layers pass unknown commands down, not all do. For the ones that don't, pass BIO_SPEEDUP down to the providers that constittue the geom, as applicable. No changes to vinum or virstor because I was unsure how to add this support, and I'm also unsure how to test these. gvinum doesn't implement BIO_FLUSH either, so it may just be poorly maintained. gvirstor is for testing and not supportig BIO_SPEEDUP is fine. Reviewed by: chs Differential Revision: https://reviews.freebsd.org/D23183
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _G_NOP_H_
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#define _G_NOP_H_
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#define G_NOP_CLASS_NAME "NOP"
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#define G_NOP_VERSION 4
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#define G_NOP_SUFFIX ".nop"
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/*
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* Special flag to instruct gnop to passthrough the underlying provider's
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* physical path
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*/
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#define G_NOP_PHYSPATH_PASSTHROUGH "\255"
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#ifdef _KERNEL
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#define G_NOP_DEBUG(lvl, ...) \
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_GEOM_DEBUG("GEOM_NOP", g_nop_debug, (lvl), NULL, __VA_ARGS__)
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#define G_NOP_LOGREQLVL(lvl, bp, ...) \
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_GEOM_DEBUG("GEOM_NOP", g_nop_debug, (lvl), (bp), __VA_ARGS__)
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#define G_NOP_LOGREQ(bp, ...) G_NOP_LOGREQLVL(2, bp, __VA_ARGS__)
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struct g_nop_delay;
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TAILQ_HEAD(g_nop_delay_head, g_nop_delay);
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struct g_nop_softc {
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int sc_error;
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off_t sc_offset;
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off_t sc_explicitsize;
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off_t sc_stripesize;
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off_t sc_stripeoffset;
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u_int sc_rfailprob;
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u_int sc_wfailprob;
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u_int sc_delaymsec;
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u_int sc_rdelayprob;
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u_int sc_wdelayprob;
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u_int sc_count_until_fail;
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uintmax_t sc_reads;
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uintmax_t sc_writes;
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uintmax_t sc_deletes;
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uintmax_t sc_getattrs;
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uintmax_t sc_flushes;
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uintmax_t sc_cmd0s;
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uintmax_t sc_cmd1s;
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uintmax_t sc_cmd2s;
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uintmax_t sc_speedups;
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uintmax_t sc_readbytes;
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uintmax_t sc_wrotebytes;
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char *sc_physpath;
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struct mtx sc_lock;
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struct g_nop_delay_head sc_head_delay;
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};
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#endif /* _KERNEL */
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#endif /* _G_NOP_H_ */
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