diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2010-08-03 16:54:38 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2010-08-30 18:38:35 +0200 |
| commit | 6674dc4269030567dd6c463b7eedc8a5b9ad1888 (patch) | |
| tree | 797ff017c72dac8193a802587582211252db588c /hw/virtio.h | |
| parent | 96638e706cd431528690cf611adcb04e1bc3255d (diff) | |
virtio: Factor virtqueue_map_sg out
Separate the mapping of requests to host memory from the descriptor iteration.
The next patch will make use of it in a different context.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 42fb2e0720511fa1da2f8e751be393f851b71d80)
Diffstat (limited to 'hw/virtio.h')
| -rw-r--r-- | hw/virtio.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/virtio.h b/hw/virtio.h index 30e472aba7..764970c3e4 100644 --- a/hw/virtio.h +++ b/hw/virtio.h @@ -81,6 +81,7 @@ typedef struct VirtQueueElement unsigned int out_num; unsigned int in_num; target_phys_addr_t in_addr[VIRTQUEUE_MAX_SIZE]; + target_phys_addr_t out_addr[VIRTQUEUE_MAX_SIZE]; struct iovec in_sg[VIRTQUEUE_MAX_SIZE]; struct iovec out_sg[VIRTQUEUE_MAX_SIZE]; } VirtQueueElement; @@ -142,6 +143,8 @@ void virtqueue_flush(VirtQueue *vq, unsigned int count); void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem, unsigned int len, unsigned int idx); +void virtqueue_map_sg(struct iovec *sg, target_phys_addr_t *addr, + size_t num_sg, int is_write); int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem); int virtqueue_avail_bytes(VirtQueue *vq, int in_bytes, int out_bytes); |