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authororivej <orivej@yandex-team.ru>2022-02-10 16:45:01 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:45:01 +0300
commit2d37894b1b037cf24231090eda8589bbb44fb6fc (patch)
treebe835aa92c6248212e705f25388ebafcf84bc7a1 /contrib/libs/linux-headers/linux/virtio_blk.h
parent718c552901d703c502ccbefdfc3c9028d608b947 (diff)
downloadydb-2d37894b1b037cf24231090eda8589bbb44fb6fc.tar.gz
Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/libs/linux-headers/linux/virtio_blk.h')
-rw-r--r--contrib/libs/linux-headers/linux/virtio_blk.h402
1 files changed, 201 insertions, 201 deletions
diff --git a/contrib/libs/linux-headers/linux/virtio_blk.h b/contrib/libs/linux-headers/linux/virtio_blk.h
index 40f85bbecb..401046f7e8 100644
--- a/contrib/libs/linux-headers/linux/virtio_blk.h
+++ b/contrib/libs/linux-headers/linux/virtio_blk.h
@@ -1,201 +1,201 @@
-#ifndef _LINUX_VIRTIO_BLK_H
-#define _LINUX_VIRTIO_BLK_H
-/* This header is BSD licensed so anyone can use the definitions to implement
- * compatible drivers/servers.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of IBM nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE. */
-#include <linux/types.h>
-#include <linux/virtio_ids.h>
-#include <linux/virtio_config.h>
-#include <linux/virtio_types.h>
-
-/* Feature bits */
-#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
-#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */
-#define VIRTIO_BLK_F_GEOMETRY 4 /* Legacy geometry available */
-#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */
-#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
-#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
-#define VIRTIO_BLK_F_MQ 12 /* support more than one vq */
-#define VIRTIO_BLK_F_DISCARD 13 /* DISCARD is supported */
-#define VIRTIO_BLK_F_WRITE_ZEROES 14 /* WRITE ZEROES is supported */
-
-/* Legacy feature bits */
-#ifndef VIRTIO_BLK_NO_LEGACY
-#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
-#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
-#define VIRTIO_BLK_F_FLUSH 9 /* Flush command supported */
-#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in config */
-/* Old (deprecated) name for VIRTIO_BLK_F_FLUSH. */
-#define VIRTIO_BLK_F_WCE VIRTIO_BLK_F_FLUSH
-#endif /* !VIRTIO_BLK_NO_LEGACY */
-
-#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
-
-struct virtio_blk_config {
- /* The capacity (in 512-byte sectors). */
- __u64 capacity;
- /* The maximum segment size (if VIRTIO_BLK_F_SIZE_MAX) */
- __u32 size_max;
- /* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */
- __u32 seg_max;
- /* geometry of the device (if VIRTIO_BLK_F_GEOMETRY) */
- struct virtio_blk_geometry {
- __u16 cylinders;
- __u8 heads;
- __u8 sectors;
- } geometry;
-
- /* block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
- __u32 blk_size;
-
- /* the next 4 entries are guarded by VIRTIO_BLK_F_TOPOLOGY */
- /* exponent for physical block per logical block. */
- __u8 physical_block_exp;
- /* alignment offset in logical blocks. */
- __u8 alignment_offset;
- /* minimum I/O size without performance penalty in logical blocks. */
- __u16 min_io_size;
- /* optimal sustained I/O size in logical blocks. */
- __u32 opt_io_size;
-
- /* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */
- __u8 wce;
- __u8 unused;
-
- /* number of vqs, only available when VIRTIO_BLK_F_MQ is set */
- __u16 num_queues;
-
- /* the next 3 entries are guarded by VIRTIO_BLK_F_DISCARD */
- /*
- * The maximum discard sectors (in 512-byte sectors) for
- * one segment.
- */
- __u32 max_discard_sectors;
- /*
- * The maximum number of discard segments in a
- * discard command.
- */
- __u32 max_discard_seg;
- /* Discard commands must be aligned to this number of sectors. */
- __u32 discard_sector_alignment;
-
- /* the next 3 entries are guarded by VIRTIO_BLK_F_WRITE_ZEROES */
- /*
- * The maximum number of write zeroes sectors (in 512-byte sectors) in
- * one segment.
- */
- __u32 max_write_zeroes_sectors;
- /*
- * The maximum number of segments in a write zeroes
- * command.
- */
- __u32 max_write_zeroes_seg;
- /*
- * Set if a VIRTIO_BLK_T_WRITE_ZEROES request may result in the
- * deallocation of one or more of the sectors.
- */
- __u8 write_zeroes_may_unmap;
-
- __u8 unused1[3];
-} __attribute__((packed));
-
-/*
- * Command types
- *
- * Usage is a bit tricky as some bits are used as flags and some are not.
- *
- * Rules:
- * VIRTIO_BLK_T_OUT may be combined with VIRTIO_BLK_T_SCSI_CMD or
- * VIRTIO_BLK_T_BARRIER. VIRTIO_BLK_T_FLUSH is a command of its own
- * and may not be combined with any of the other flags.
- */
-
-/* These two define direction. */
-#define VIRTIO_BLK_T_IN 0
-#define VIRTIO_BLK_T_OUT 1
-
-#ifndef VIRTIO_BLK_NO_LEGACY
-/* This bit says it's a scsi command, not an actual read or write. */
-#define VIRTIO_BLK_T_SCSI_CMD 2
-#endif /* VIRTIO_BLK_NO_LEGACY */
-
-/* Cache flush command */
-#define VIRTIO_BLK_T_FLUSH 4
-
-/* Get device ID command */
-#define VIRTIO_BLK_T_GET_ID 8
-
-/* Discard command */
-#define VIRTIO_BLK_T_DISCARD 11
-
-/* Write zeroes command */
-#define VIRTIO_BLK_T_WRITE_ZEROES 13
-
-#ifndef VIRTIO_BLK_NO_LEGACY
-/* Barrier before this op. */
-#define VIRTIO_BLK_T_BARRIER 0x80000000
-#endif /* !VIRTIO_BLK_NO_LEGACY */
-
-/*
- * This comes first in the read scatter-gather list.
- * For legacy virtio, if VIRTIO_F_ANY_LAYOUT is not negotiated,
- * this is the first element of the read scatter-gather list.
- */
-struct virtio_blk_outhdr {
- /* VIRTIO_BLK_T* */
- __virtio32 type;
- /* io priority. */
- __virtio32 ioprio;
- /* Sector (ie. 512 byte offset) */
- __virtio64 sector;
-};
-
-/* Unmap this range (only valid for write zeroes command) */
-#define VIRTIO_BLK_WRITE_ZEROES_FLAG_UNMAP 0x00000001
-
-/* Discard/write zeroes range for each request. */
-struct virtio_blk_discard_write_zeroes {
- /* discard/write zeroes start sector */
- __le64 sector;
- /* number of discard/write zeroes sectors */
- __le32 num_sectors;
- /* flags for this range */
- __le32 flags;
-};
-
-#ifndef VIRTIO_BLK_NO_LEGACY
-struct virtio_scsi_inhdr {
- __virtio32 errors;
- __virtio32 data_len;
- __virtio32 sense_len;
- __virtio32 residual;
-};
-#endif /* !VIRTIO_BLK_NO_LEGACY */
-
-/* And this is the final byte of the write scatter-gather list. */
-#define VIRTIO_BLK_S_OK 0
-#define VIRTIO_BLK_S_IOERR 1
-#define VIRTIO_BLK_S_UNSUPP 2
-#endif /* _LINUX_VIRTIO_BLK_H */
+#ifndef _LINUX_VIRTIO_BLK_H
+#define _LINUX_VIRTIO_BLK_H
+/* This header is BSD licensed so anyone can use the definitions to implement
+ * compatible drivers/servers.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of IBM nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE. */
+#include <linux/types.h>
+#include <linux/virtio_ids.h>
+#include <linux/virtio_config.h>
+#include <linux/virtio_types.h>
+
+/* Feature bits */
+#define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */
+#define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */
+#define VIRTIO_BLK_F_GEOMETRY 4 /* Legacy geometry available */
+#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */
+#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
+#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
+#define VIRTIO_BLK_F_MQ 12 /* support more than one vq */
+#define VIRTIO_BLK_F_DISCARD 13 /* DISCARD is supported */
+#define VIRTIO_BLK_F_WRITE_ZEROES 14 /* WRITE ZEROES is supported */
+
+/* Legacy feature bits */
+#ifndef VIRTIO_BLK_NO_LEGACY
+#define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */
+#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
+#define VIRTIO_BLK_F_FLUSH 9 /* Flush command supported */
+#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in config */
+/* Old (deprecated) name for VIRTIO_BLK_F_FLUSH. */
+#define VIRTIO_BLK_F_WCE VIRTIO_BLK_F_FLUSH
+#endif /* !VIRTIO_BLK_NO_LEGACY */
+
+#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
+
+struct virtio_blk_config {
+ /* The capacity (in 512-byte sectors). */
+ __u64 capacity;
+ /* The maximum segment size (if VIRTIO_BLK_F_SIZE_MAX) */
+ __u32 size_max;
+ /* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */
+ __u32 seg_max;
+ /* geometry of the device (if VIRTIO_BLK_F_GEOMETRY) */
+ struct virtio_blk_geometry {
+ __u16 cylinders;
+ __u8 heads;
+ __u8 sectors;
+ } geometry;
+
+ /* block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
+ __u32 blk_size;
+
+ /* the next 4 entries are guarded by VIRTIO_BLK_F_TOPOLOGY */
+ /* exponent for physical block per logical block. */
+ __u8 physical_block_exp;
+ /* alignment offset in logical blocks. */
+ __u8 alignment_offset;
+ /* minimum I/O size without performance penalty in logical blocks. */
+ __u16 min_io_size;
+ /* optimal sustained I/O size in logical blocks. */
+ __u32 opt_io_size;
+
+ /* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */
+ __u8 wce;
+ __u8 unused;
+
+ /* number of vqs, only available when VIRTIO_BLK_F_MQ is set */
+ __u16 num_queues;
+
+ /* the next 3 entries are guarded by VIRTIO_BLK_F_DISCARD */
+ /*
+ * The maximum discard sectors (in 512-byte sectors) for
+ * one segment.
+ */
+ __u32 max_discard_sectors;
+ /*
+ * The maximum number of discard segments in a
+ * discard command.
+ */
+ __u32 max_discard_seg;
+ /* Discard commands must be aligned to this number of sectors. */
+ __u32 discard_sector_alignment;
+
+ /* the next 3 entries are guarded by VIRTIO_BLK_F_WRITE_ZEROES */
+ /*
+ * The maximum number of write zeroes sectors (in 512-byte sectors) in
+ * one segment.
+ */
+ __u32 max_write_zeroes_sectors;
+ /*
+ * The maximum number of segments in a write zeroes
+ * command.
+ */
+ __u32 max_write_zeroes_seg;
+ /*
+ * Set if a VIRTIO_BLK_T_WRITE_ZEROES request may result in the
+ * deallocation of one or more of the sectors.
+ */
+ __u8 write_zeroes_may_unmap;
+
+ __u8 unused1[3];
+} __attribute__((packed));
+
+/*
+ * Command types
+ *
+ * Usage is a bit tricky as some bits are used as flags and some are not.
+ *
+ * Rules:
+ * VIRTIO_BLK_T_OUT may be combined with VIRTIO_BLK_T_SCSI_CMD or
+ * VIRTIO_BLK_T_BARRIER. VIRTIO_BLK_T_FLUSH is a command of its own
+ * and may not be combined with any of the other flags.
+ */
+
+/* These two define direction. */
+#define VIRTIO_BLK_T_IN 0
+#define VIRTIO_BLK_T_OUT 1
+
+#ifndef VIRTIO_BLK_NO_LEGACY
+/* This bit says it's a scsi command, not an actual read or write. */
+#define VIRTIO_BLK_T_SCSI_CMD 2
+#endif /* VIRTIO_BLK_NO_LEGACY */
+
+/* Cache flush command */
+#define VIRTIO_BLK_T_FLUSH 4
+
+/* Get device ID command */
+#define VIRTIO_BLK_T_GET_ID 8
+
+/* Discard command */
+#define VIRTIO_BLK_T_DISCARD 11
+
+/* Write zeroes command */
+#define VIRTIO_BLK_T_WRITE_ZEROES 13
+
+#ifndef VIRTIO_BLK_NO_LEGACY
+/* Barrier before this op. */
+#define VIRTIO_BLK_T_BARRIER 0x80000000
+#endif /* !VIRTIO_BLK_NO_LEGACY */
+
+/*
+ * This comes first in the read scatter-gather list.
+ * For legacy virtio, if VIRTIO_F_ANY_LAYOUT is not negotiated,
+ * this is the first element of the read scatter-gather list.
+ */
+struct virtio_blk_outhdr {
+ /* VIRTIO_BLK_T* */
+ __virtio32 type;
+ /* io priority. */
+ __virtio32 ioprio;
+ /* Sector (ie. 512 byte offset) */
+ __virtio64 sector;
+};
+
+/* Unmap this range (only valid for write zeroes command) */
+#define VIRTIO_BLK_WRITE_ZEROES_FLAG_UNMAP 0x00000001
+
+/* Discard/write zeroes range for each request. */
+struct virtio_blk_discard_write_zeroes {
+ /* discard/write zeroes start sector */
+ __le64 sector;
+ /* number of discard/write zeroes sectors */
+ __le32 num_sectors;
+ /* flags for this range */
+ __le32 flags;
+};
+
+#ifndef VIRTIO_BLK_NO_LEGACY
+struct virtio_scsi_inhdr {
+ __virtio32 errors;
+ __virtio32 data_len;
+ __virtio32 sense_len;
+ __virtio32 residual;
+};
+#endif /* !VIRTIO_BLK_NO_LEGACY */
+
+/* And this is the final byte of the write scatter-gather list. */
+#define VIRTIO_BLK_S_OK 0
+#define VIRTIO_BLK_S_IOERR 1
+#define VIRTIO_BLK_S_UNSUPP 2
+#endif /* _LINUX_VIRTIO_BLK_H */