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-rw-r--r--include/block/accounting.h3
-rw-r--r--include/block/block.h4
-rw-r--r--include/block/block_int.h4
-rw-r--r--include/block/nbd.h2
-rw-r--r--include/block/write-threshold.h64
-rw-r--r--include/hw/virtio/virtio-blk.h18
-rw-r--r--include/qapi/qmp/qerror.h9
-rw-r--r--include/sysemu/block-backend.h1
8 files changed, 89 insertions, 16 deletions
diff --git a/include/block/accounting.h b/include/block/accounting.h
index 50b42b3808..4c406cff7a 100644
--- a/include/block/accounting.h
+++ b/include/block/accounting.h
@@ -39,6 +39,7 @@ typedef struct BlockAcctStats {
uint64_t nr_bytes[BLOCK_MAX_IOTYPE];
uint64_t nr_ops[BLOCK_MAX_IOTYPE];
uint64_t total_time_ns[BLOCK_MAX_IOTYPE];
+ uint64_t merged[BLOCK_MAX_IOTYPE];
uint64_t wr_highest_sector;
} BlockAcctStats;
@@ -53,5 +54,7 @@ void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie,
void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie);
void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num,
unsigned int nb_sectors);
+void block_acct_merge_done(BlockAcctStats *stats, enum BlockAcctType type,
+ int num_requests);
#endif
diff --git a/include/block/block.h b/include/block/block.h
index 3082d2b80e..321295e5f7 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -83,6 +83,9 @@ typedef enum {
#define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS)
#define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1)
+#define BDRV_REQUEST_MAX_SECTORS MIN(SIZE_MAX >> BDRV_SECTOR_BITS, \
+ INT_MAX >> BDRV_SECTOR_BITS)
+
/*
* Allocation status flags
* BDRV_BLOCK_DATA: data is read from bs->file or another file
@@ -378,6 +381,7 @@ BlockDriverState *bdrv_next(BlockDriverState *bs);
int bdrv_is_encrypted(BlockDriverState *bs);
int bdrv_key_required(BlockDriverState *bs);
int bdrv_set_key(BlockDriverState *bs, const char *key);
+void bdrv_add_key(BlockDriverState *bs, const char *key, Error **errp);
int bdrv_query_missing_keys(void);
void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
void *opaque);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index e264be97b2..7ad19503df 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -412,6 +412,10 @@ struct BlockDriverState {
/* The error object in use for blocking operations on backing_hd */
Error *backing_blocker;
+
+ /* threshold limit for writes, in bytes. "High water mark". */
+ uint64_t write_threshold_offset;
+ NotifierWithReturn write_threshold_notifier;
};
diff --git a/include/block/nbd.h b/include/block/nbd.h
index 348302c90b..b75959556c 100644
--- a/include/block/nbd.h
+++ b/include/block/nbd.h
@@ -75,7 +75,7 @@ enum {
ssize_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read);
int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags,
- off_t *size, size_t *blocksize);
+ off_t *size, size_t *blocksize, Error **errp);
int nbd_init(int fd, int csock, uint32_t flags, off_t size, size_t blocksize);
ssize_t nbd_send_request(int csock, struct nbd_request *request);
ssize_t nbd_receive_reply(int csock, struct nbd_reply *reply);
diff --git a/include/block/write-threshold.h b/include/block/write-threshold.h
new file mode 100644
index 0000000000..f1b899cd5f
--- /dev/null
+++ b/include/block/write-threshold.h
@@ -0,0 +1,64 @@
+/*
+ * QEMU System Emulator block write threshold notification
+ *
+ * Copyright Red Hat, Inc. 2014
+ *
+ * Authors:
+ * Francesco Romani <fromani@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ */
+#ifndef BLOCK_WRITE_THRESHOLD_H
+#define BLOCK_WRITE_THRESHOLD_H
+
+#include <stdint.h>
+
+#include "qemu/typedefs.h"
+#include "qemu-common.h"
+
+/*
+ * bdrv_write_threshold_set:
+ *
+ * Set the write threshold for block devices, in bytes.
+ * Notify when a write exceeds the threshold, meaning the device
+ * is becoming full, so it can be transparently resized.
+ * To be used with thin-provisioned block devices.
+ *
+ * Use threshold_bytes == 0 to disable.
+ */
+void bdrv_write_threshold_set(BlockDriverState *bs, uint64_t threshold_bytes);
+
+/*
+ * bdrv_write_threshold_get
+ *
+ * Get the configured write threshold, in bytes.
+ * Zero means no threshold configured.
+ */
+uint64_t bdrv_write_threshold_get(const BlockDriverState *bs);
+
+/*
+ * bdrv_write_threshold_is_set
+ *
+ * Tell if a write threshold is set for a given BDS.
+ */
+bool bdrv_write_threshold_is_set(const BlockDriverState *bs);
+
+/*
+ * bdrv_write_threshold_exceeded
+ *
+ * Return the extent of a write request that exceeded the threshold,
+ * or zero if the request is below the threshold.
+ * Return zero also if the threshold was not set.
+ *
+ * NOTE: here we assume the following holds for each request this code
+ * deals with:
+ *
+ * assert((req->offset + req->bytes) <= UINT64_MAX)
+ *
+ * Please not there is *not* an actual C assert().
+ */
+uint64_t bdrv_write_threshold_exceeded(const BlockDriverState *bs,
+ const BdrvTrackedRequest *req);
+
+#endif
diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h
index 4652b70b5d..fc7d311a43 100644
--- a/include/hw/virtio/virtio-blk.h
+++ b/include/hw/virtio/virtio-blk.h
@@ -113,6 +113,7 @@ struct VirtIOBlkConf
uint32_t scsi;
uint32_t config_wce;
uint32_t data_plane;
+ uint32_t request_merging;
};
struct VirtIOBlockDataPlane;
@@ -134,27 +135,32 @@ typedef struct VirtIOBlock {
struct VirtIOBlockDataPlane *dataplane;
} VirtIOBlock;
-typedef struct MultiReqBuffer {
- BlockRequest blkreq[32];
- unsigned int num_writes;
-} MultiReqBuffer;
-
typedef struct VirtIOBlockReq {
+ int64_t sector_num;
VirtIOBlock *dev;
VirtQueueElement elem;
struct virtio_blk_inhdr *in;
struct virtio_blk_outhdr out;
QEMUIOVector qiov;
struct VirtIOBlockReq *next;
+ struct VirtIOBlockReq *mr_next;
BlockAcctCookie acct;
} VirtIOBlockReq;
+#define VIRTIO_BLK_MAX_MERGE_REQS 32
+
+typedef struct MultiReqBuffer {
+ VirtIOBlockReq *reqs[VIRTIO_BLK_MAX_MERGE_REQS];
+ unsigned int num_reqs;
+ bool is_write;
+} MultiReqBuffer;
+
VirtIOBlockReq *virtio_blk_alloc_request(VirtIOBlock *s);
void virtio_blk_free_request(VirtIOBlockReq *req);
void virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb);
-void virtio_submit_multiwrite(BlockBackend *blk, MultiReqBuffer *mrb);
+void virtio_blk_submit_multireq(BlockBackend *blk, MultiReqBuffer *mrb);
#endif
diff --git a/include/qapi/qmp/qerror.h b/include/qapi/qmp/qerror.h
index eeaf0cb981..986260f466 100644
--- a/include/qapi/qmp/qerror.h
+++ b/include/qapi/qmp/qerror.h
@@ -37,9 +37,6 @@ void qerror_report_err(Error *err);
#define QERR_BASE_NOT_FOUND \
ERROR_CLASS_GENERIC_ERROR, "Base '%s' not found"
-#define QERR_BLOCK_JOB_NOT_ACTIVE \
- ERROR_CLASS_DEVICE_NOT_ACTIVE, "No active block job on device '%s'"
-
#define QERR_BLOCK_JOB_NOT_READY \
ERROR_CLASS_GENERIC_ERROR, "The active block job for device '%s' cannot be completed"
@@ -52,9 +49,6 @@ void qerror_report_err(Error *err);
#define QERR_BUS_NOT_FOUND \
ERROR_CLASS_GENERIC_ERROR, "Bus '%s' not found"
-#define QERR_DEVICE_ENCRYPTED \
- ERROR_CLASS_DEVICE_ENCRYPTED, "'%s' (%s) is encrypted"
-
#define QERR_DEVICE_HAS_NO_MEDIUM \
ERROR_CLASS_GENERIC_ERROR, "Device '%s' has no medium"
@@ -70,9 +64,6 @@ void qerror_report_err(Error *err);
#define QERR_DEVICE_NO_HOTPLUG \
ERROR_CLASS_GENERIC_ERROR, "Device '%s' does not support hotplugging"
-#define QERR_DEVICE_NOT_ENCRYPTED \
- ERROR_CLASS_GENERIC_ERROR, "Device '%s' is not encrypted"
-
#define QERR_DEVICE_NOT_FOUND \
ERROR_CLASS_DEVICE_NOT_FOUND, "Device '%s' not found"
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 8871a021d0..aab12b982c 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -127,6 +127,7 @@ int blk_is_inserted(BlockBackend *blk);
void blk_lock_medium(BlockBackend *blk, bool locked);
void blk_eject(BlockBackend *blk, bool eject_flag);
int blk_get_flags(BlockBackend *blk);
+int blk_get_max_transfer_length(BlockBackend *blk);
void blk_set_guest_block_size(BlockBackend *blk, int align);
void *blk_blockalign(BlockBackend *blk, size_t size);
bool blk_op_is_blocked(BlockBackend *blk, BlockOpType op, Error **errp);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-21 02:16:40 +0000