Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block patches for 2.1.0-rc0

# gpg: Signature made Fri 27 Jun 2014 19:50:32 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream: (47 commits)
  iotests: Fix 083 for out-of-tree builds
  iotests: Drop Python version from 065's Shebang
  iotests: Use $PYTHON for Python scripts
  iotests: Source common.env
  configure: Enable out-of-tree iotests
  iotests: Allow out-of-tree run
  block.c: Don't return success for bdrv_append_temp_snapshot() failure
  qemu-iotests: Add TestRepairQuorum to 041 to test drive-mirror node-name mode.
  block: Add replaces argument to drive-mirror
  blockjob: Fix recent BLOCK_JOB_ERROR regression
  blockjob: Fix recent BLOCK_JOB_READY regression
  virtio-blk: Rename complete_request_early to complete_request_vring
  virtio-blk: Unify {non-,}dataplane's request handlings
  virtio-blk: Schedule BH in the right context
  virtio-blk: Export request handling functions to dataplane
  virtio-blk: Make request completion function virtual
  block: acquire AioContext in qmp_query_blockstats()
  block: make bdrv_query_stats() static
  virtio-blk: Fix and clean up the in_sg and out_sg check
  virtio-blk: Fill in VirtIOBlockReq.out in dataplane code
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h
index 4bc9b549ad..d0fb26f963 100644
--- a/include/hw/virtio/virtio-blk.h
+++ b/include/hw/virtio/virtio-blk.h
@@ -17,6 +17,7 @@
 #include "hw/virtio/virtio.h"
 #include "hw/block/block.h"
 #include "sysemu/iothread.h"
+#include "block/block.h"
 
 #define TYPE_VIRTIO_BLK "virtio-blk-device"
 #define VIRTIO_BLK(obj) \
@@ -116,6 +117,7 @@ struct VirtIOBlkConf
 
 struct VirtIOBlockDataPlane;
 
+struct VirtIOBlockReq;
 typedef struct VirtIOBlock {
     VirtIODevice parent_obj;
     BlockDriverState *bs;
@@ -127,12 +129,29 @@ typedef struct VirtIOBlock {
     unsigned short sector_mask;
     bool original_wce;
     VMChangeStateEntry *change;
+    /* Function to push to vq and notify guest */
+    void (*complete_request)(struct VirtIOBlockReq *req, unsigned char status);
 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
     Notifier migration_state_notifier;
     struct VirtIOBlockDataPlane *dataplane;
 #endif
 } VirtIOBlock;
 
+typedef struct MultiReqBuffer {
+    BlockRequest        blkreq[32];
+    unsigned int        num_writes;
+} MultiReqBuffer;
+
+typedef struct VirtIOBlockReq {
+    VirtIOBlock *dev;
+    VirtQueueElement *elem;
+    struct virtio_blk_inhdr *in;
+    struct virtio_blk_outhdr out;
+    QEMUIOVector qiov;
+    struct VirtIOBlockReq *next;
+    BlockAcctCookie acct;
+} VirtIOBlockReq;
+
 #define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
         DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
 
@@ -158,4 +177,8 @@ void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk);
 int virtio_blk_handle_scsi_req(VirtIOBlock *blk,
                                VirtQueueElement *elem);
 
+void virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb);
+
+void virtio_submit_multiwrite(BlockDriverState *bs, MultiReqBuffer *mrb);
+
 #endif