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| author | Stefano Garzarella <sgarzare@redhat.com> | 2019-02-21 11:33:06 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2019-02-22 09:42:16 +0000 |
| commit | bbe8bd4d85d80442f87774d7bffaca11f2c02b9b (patch) | |
| tree | 46d354fd1d29ce5f3299a702dcd6937135527deb /hw/block | |
| parent | 00f639fb8f3e2b34f0e9767619cb16604a844a5f (diff) | |
| download | qemu-bbe8bd4d85d80442f87774d7bffaca11f2c02b9b.zip | |
virtio-blk: add host_features field in VirtIOBlock
Since configurable features for virtio-blk are growing, this patch
adds host_features field in the struct VirtIOBlock. (as in virtio-net)
In this way, we can avoid to add new fields for new properties and
we can directly set VIRTIO_BLK_F* flags in the host_features.
We update "config-wce" and "scsi" property definition to use the new
host_features field without change the behaviour.
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20190221103314.58500-3-sgarzare@redhat.com
Message-Id: <20190221103314.58500-3-sgarzare@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/block')
| -rw-r--r-- | hw/block/virtio-blk.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index afedf48ca6..7813237756 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -245,7 +245,7 @@ static int virtio_blk_handle_scsi_req(VirtIOBlockReq *req) */ scsi = (void *)elem->in_sg[elem->in_num - 2].iov_base; - if (!blk->conf.scsi) { + if (!virtio_has_feature(blk->host_features, VIRTIO_BLK_F_SCSI)) { status = VIRTIO_BLK_S_UNSUPP; goto fail; } @@ -785,12 +785,15 @@ static uint64_t virtio_blk_get_features(VirtIODevice *vdev, uint64_t features, { VirtIOBlock *s = VIRTIO_BLK(vdev); + /* Firstly sync all virtio-blk possible supported features */ + features |= s->host_features; + virtio_add_feature(&features, VIRTIO_BLK_F_SEG_MAX); virtio_add_feature(&features, VIRTIO_BLK_F_GEOMETRY); virtio_add_feature(&features, VIRTIO_BLK_F_TOPOLOGY); virtio_add_feature(&features, VIRTIO_BLK_F_BLK_SIZE); if (virtio_has_feature(features, VIRTIO_F_VERSION_1)) { - if (s->conf.scsi) { + if (virtio_has_feature(s->host_features, VIRTIO_BLK_F_SCSI)) { error_setg(errp, "Please set scsi=off for virtio-blk devices in order to use virtio 1.0"); return 0; } @@ -799,9 +802,6 @@ static uint64_t virtio_blk_get_features(VirtIODevice *vdev, uint64_t features, virtio_add_feature(&features, VIRTIO_BLK_F_SCSI); } - if (s->conf.config_wce) { - virtio_add_feature(&features, VIRTIO_BLK_F_CONFIG_WCE); - } if (blk_enable_write_cache(s->blk)) { virtio_add_feature(&features, VIRTIO_BLK_F_WCE); } @@ -1015,9 +1015,11 @@ static Property virtio_blk_properties[] = { DEFINE_BLOCK_ERROR_PROPERTIES(VirtIOBlock, conf.conf), DEFINE_BLOCK_CHS_PROPERTIES(VirtIOBlock, conf.conf), DEFINE_PROP_STRING("serial", VirtIOBlock, conf.serial), - DEFINE_PROP_BIT("config-wce", VirtIOBlock, conf.config_wce, 0, true), + DEFINE_PROP_BIT64("config-wce", VirtIOBlock, host_features, + VIRTIO_BLK_F_CONFIG_WCE, true), #ifdef __linux__ - DEFINE_PROP_BIT("scsi", VirtIOBlock, conf.scsi, 0, false), + DEFINE_PROP_BIT64("scsi", VirtIOBlock, host_features, + VIRTIO_BLK_F_SCSI, false), #endif DEFINE_PROP_BIT("request-merging", VirtIOBlock, conf.request_merging, 0, true), |