From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55769) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFKYj-0006dJ-UV for qemu-devel@nongnu.org; Tue, 21 Jun 2016 08:13:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bFKYc-0006Ju-Mg for qemu-devel@nongnu.org; Tue, 21 Jun 2016 08:13:36 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57488) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFKYc-0006Jn-F6 for qemu-devel@nongnu.org; Tue, 21 Jun 2016 08:13:30 -0400 From: Stefan Hajnoczi Date: Tue, 21 Jun 2016 13:13:13 +0100 Message-Id: <1466511196-12612-5-git-send-email-stefanha@redhat.com> In-Reply-To: <1466511196-12612-1-git-send-email-stefanha@redhat.com> References: <1466511196-12612-1-git-send-email-stefanha@redhat.com> Subject: [Qemu-devel] [PATCH v4 4/7] virtio-blk: associate request with a virtqueue List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Roman Pen , Fam Zheng , Christian Borntraeger , Paolo Bonzini , Ming Lei , Stefan Hajnoczi Multiqueue requires that each request knows to which virtqueue it belongs. Signed-off-by: Stefan Hajnoczi --- hw/block/virtio-blk.c | 20 +++++++++++--------- include/hw/virtio/virtio-blk.h | 4 +++- 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index fa05e41..222611c 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -29,9 +29,11 @@ #include "hw/virtio/virtio-bus.h" #include "hw/virtio/virtio-access.h" -void virtio_blk_init_request(VirtIOBlock *s, VirtIOBlockReq *req) +void virtio_blk_init_request(VirtIOBlock *s, VirtQueue *vq, + VirtIOBlockReq *req) { req->dev = s; + req->vq = vq; req->qiov.size = 0; req->in_len = 0; req->next = NULL; @@ -53,11 +55,11 @@ static void virtio_blk_req_complete(VirtIOBlockReq *req, unsigned char status) trace_virtio_blk_req_complete(req, status); stb_p(&req->in->status, status); - virtqueue_push(s->vq, &req->elem, req->in_len); + virtqueue_push(req->vq, &req->elem, req->in_len); if (s->dataplane_started && !s->dataplane_disabled) { - virtio_blk_data_plane_notify(s->dataplane, s->vq); + virtio_blk_data_plane_notify(s->dataplane, req->vq); } else { - virtio_notify(vdev, s->vq); + virtio_notify(vdev, req->vq); } } @@ -187,12 +189,12 @@ out: #endif -static VirtIOBlockReq *virtio_blk_get_request(VirtIOBlock *s) +static VirtIOBlockReq *virtio_blk_get_request(VirtIOBlock *s, VirtQueue *vq) { - VirtIOBlockReq *req = virtqueue_pop(s->vq, sizeof(VirtIOBlockReq)); + VirtIOBlockReq *req = virtqueue_pop(vq, sizeof(VirtIOBlockReq)); if (req) { - virtio_blk_init_request(s, req); + virtio_blk_init_request(s, vq, req); } return req; } @@ -583,7 +585,7 @@ void virtio_blk_handle_vq(VirtIOBlock *s, VirtQueue *vq) blk_io_plug(s->blk); - while ((req = virtio_blk_get_request(s))) { + while ((req = virtio_blk_get_request(s, vq))) { virtio_blk_handle_request(req, &mrb); } @@ -836,7 +838,7 @@ static int virtio_blk_load_device(VirtIODevice *vdev, QEMUFile *f, while (qemu_get_sbyte(f)) { VirtIOBlockReq *req; req = qemu_get_virtqueue_element(f, sizeof(VirtIOBlockReq)); - virtio_blk_init_request(s, req); + virtio_blk_init_request(s, s->vq, req); req->next = s->rq; s->rq = req; } diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h index 9b03b6a..a25b344 100644 --- a/include/hw/virtio/virtio-blk.h +++ b/include/hw/virtio/virtio-blk.h @@ -63,6 +63,7 @@ typedef struct VirtIOBlockReq { VirtQueueElement elem; int64_t sector_num; VirtIOBlock *dev; + VirtQueue *vq; struct virtio_blk_inhdr *in; struct virtio_blk_outhdr out; QEMUIOVector qiov; @@ -80,7 +81,8 @@ typedef struct MultiReqBuffer { bool is_write; } MultiReqBuffer; -void virtio_blk_init_request(VirtIOBlock *s, VirtIOBlockReq *req); +void virtio_blk_init_request(VirtIOBlock *s, VirtQueue *vq, + VirtIOBlockReq *req); void virtio_blk_free_request(VirtIOBlockReq *req); void virtio_blk_handle_request(VirtIOBlockReq *req, MultiReqBuffer *mrb); -- 2.5.5