| Message ID | 20230922114625.5786-2-fengli@smartx.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Implement reconnect for vhost-user-scsi | expand |
> On Sep 22, 2023, at 7:46 AM, Li Feng <fengli@smartx.com> wrote: > > Currently the get_inflight_fd will be sent every time the device is started, and > the backend will allocate shared memory to save the inflight state. If the > backend finds that it receives the second get_inflight_fd, it will release the > previous shared memory, which breaks inflight working logic. > > This patch is a preparation for the following patches. This looks identical to the v3 patch I reviewed? If I’ve missed something can you please point it out? > Signed-off-by: Li Feng <fengli@smartx.com> > --- > hw/scsi/vhost-scsi-common.c | 37 ++++++++++++++++++------------------- > 1 file changed, 18 insertions(+), 19 deletions(-) > > diff --git a/hw/scsi/vhost-scsi-common.c b/hw/scsi/vhost-scsi-common.c > index a06f01af26..a61cd0e907 100644 > --- a/hw/scsi/vhost-scsi-common.c > +++ b/hw/scsi/vhost-scsi-common.c > @@ -52,20 +52,28 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > vsc->dev.acked_features = vdev->guest_features; > > - assert(vsc->inflight == NULL); > - vsc->inflight = g_new0(struct vhost_inflight, 1); > - ret = vhost_dev_get_inflight(&vsc->dev, > - vs->conf.virtqueue_size, > - vsc->inflight); > + ret = vhost_dev_prepare_inflight(&vsc->dev, vdev); > if (ret < 0) { > - error_report("Error get inflight: %d", -ret); > + error_report("Error setting inflight format: %d", -ret); > goto err_guest_notifiers; > } > > - ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > - if (ret < 0) { > - error_report("Error set inflight: %d", -ret); > - goto err_guest_notifiers; > + if (vsc->inflight) { > + if (!vsc->inflight->addr) { > + ret = vhost_dev_get_inflight(&vsc->dev, > + vs->conf.virtqueue_size, > + vsc->inflight); > + if (ret < 0) { > + error_report("Error getting inflight: %d", -ret); > + goto err_guest_notifiers; > + } > + } > + > + ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > + if (ret < 0) { > + error_report("Error setting inflight: %d", -ret); > + goto err_guest_notifiers; > + } > } > > ret = vhost_dev_start(&vsc->dev, vdev, true); > @@ -85,9 +93,6 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > return ret; > > err_guest_notifiers: > - g_free(vsc->inflight); > - vsc->inflight = NULL; > - > k->set_guest_notifiers(qbus->parent, vsc->dev.nvqs, false); > err_host_notifiers: > vhost_dev_disable_notifiers(&vsc->dev, vdev); > @@ -111,12 +116,6 @@ void vhost_scsi_common_stop(VHostSCSICommon *vsc) > } > assert(ret >= 0); > > - if (vsc->inflight) { > - vhost_dev_free_inflight(vsc->inflight); > - g_free(vsc->inflight); > - vsc->inflight = NULL; > - } > - > vhost_dev_disable_notifiers(&vsc->dev, vdev); > } > > -- > 2.41.0 >
On Fri, Sep 29, 2023 at 8:55 AM Raphael Norwitz <raphael.norwitz@nutanix.com> wrote: > > > > > On Sep 22, 2023, at 7:46 AM, Li Feng <fengli@smartx.com> wrote: > > > > Currently the get_inflight_fd will be sent every time the device is started, and > > the backend will allocate shared memory to save the inflight state. If the > > backend finds that it receives the second get_inflight_fd, it will release the > > previous shared memory, which breaks inflight working logic. > > > > This patch is a preparation for the following patches. > > This looks identical to the v3 patch I reviewed? If I’ve missed something can you please point it out? Yes, nothing changed in this patch. > > > > Signed-off-by: Li Feng <fengli@smartx.com> > > --- > > hw/scsi/vhost-scsi-common.c | 37 ++++++++++++++++++------------------- > > 1 file changed, 18 insertions(+), 19 deletions(-) > > > > diff --git a/hw/scsi/vhost-scsi-common.c b/hw/scsi/vhost-scsi-common.c > > index a06f01af26..a61cd0e907 100644 > > --- a/hw/scsi/vhost-scsi-common.c > > +++ b/hw/scsi/vhost-scsi-common.c > > @@ -52,20 +52,28 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > > > vsc->dev.acked_features = vdev->guest_features; > > > > - assert(vsc->inflight == NULL); > > - vsc->inflight = g_new0(struct vhost_inflight, 1); > > - ret = vhost_dev_get_inflight(&vsc->dev, > > - vs->conf.virtqueue_size, > > - vsc->inflight); > > + ret = vhost_dev_prepare_inflight(&vsc->dev, vdev); > > if (ret < 0) { > > - error_report("Error get inflight: %d", -ret); > > + error_report("Error setting inflight format: %d", -ret); > > goto err_guest_notifiers; > > } > > > > - ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > > - if (ret < 0) { > > - error_report("Error set inflight: %d", -ret); > > - goto err_guest_notifiers; > > + if (vsc->inflight) { > > + if (!vsc->inflight->addr) { > > + ret = vhost_dev_get_inflight(&vsc->dev, > > + vs->conf.virtqueue_size, > > + vsc->inflight); > > + if (ret < 0) { > > + error_report("Error getting inflight: %d", -ret); > > + goto err_guest_notifiers; > > + } > > + } > > + > > + ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > > + if (ret < 0) { > > + error_report("Error setting inflight: %d", -ret); > > + goto err_guest_notifiers; > > + } > > } > > > > ret = vhost_dev_start(&vsc->dev, vdev, true); > > @@ -85,9 +93,6 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > return ret; > > > > err_guest_notifiers: > > - g_free(vsc->inflight); > > - vsc->inflight = NULL; > > - > > k->set_guest_notifiers(qbus->parent, vsc->dev.nvqs, false); > > err_host_notifiers: > > vhost_dev_disable_notifiers(&vsc->dev, vdev); > > @@ -111,12 +116,6 @@ void vhost_scsi_common_stop(VHostSCSICommon *vsc) > > } > > assert(ret >= 0); > > > > - if (vsc->inflight) { > > - vhost_dev_free_inflight(vsc->inflight); > > - g_free(vsc->inflight); > > - vsc->inflight = NULL; > > - } > > - > > vhost_dev_disable_notifiers(&vsc->dev, vdev); > > } > > > > -- > > 2.41.0 > > >
On Sun, Oct 08, 2023 at 04:49:05PM +0800, Li Feng wrote: > On Fri, Sep 29, 2023 at 8:55 AM Raphael Norwitz > <raphael.norwitz@nutanix.com> wrote: > > > > > > > > > On Sep 22, 2023, at 7:46 AM, Li Feng <fengli@smartx.com> wrote: > > > > > > Currently the get_inflight_fd will be sent every time the device is started, and > > > the backend will allocate shared memory to save the inflight state. If the > > > backend finds that it receives the second get_inflight_fd, it will release the > > > previous shared memory, which breaks inflight working logic. > > > > > > This patch is a preparation for the following patches. > > > > This looks identical to the v3 patch I reviewed? If I’ve missed something can you please point it out? > Yes, nothing changed in this patch. Then you should include tags such as reviewed/acked by for previous version. if you drop tags you indicate to people they have to re-review. also, mentioning which patches changed in the cover letter is a courtesy to reviewers. > > > > > > > Signed-off-by: Li Feng <fengli@smartx.com> > > > --- > > > hw/scsi/vhost-scsi-common.c | 37 ++++++++++++++++++------------------- > > > 1 file changed, 18 insertions(+), 19 deletions(-) > > > > > > diff --git a/hw/scsi/vhost-scsi-common.c b/hw/scsi/vhost-scsi-common.c > > > index a06f01af26..a61cd0e907 100644 > > > --- a/hw/scsi/vhost-scsi-common.c > > > +++ b/hw/scsi/vhost-scsi-common.c > > > @@ -52,20 +52,28 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > > > > > vsc->dev.acked_features = vdev->guest_features; > > > > > > - assert(vsc->inflight == NULL); > > > - vsc->inflight = g_new0(struct vhost_inflight, 1); > > > - ret = vhost_dev_get_inflight(&vsc->dev, > > > - vs->conf.virtqueue_size, > > > - vsc->inflight); > > > + ret = vhost_dev_prepare_inflight(&vsc->dev, vdev); > > > if (ret < 0) { > > > - error_report("Error get inflight: %d", -ret); > > > + error_report("Error setting inflight format: %d", -ret); > > > goto err_guest_notifiers; > > > } > > > > > > - ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > > > - if (ret < 0) { > > > - error_report("Error set inflight: %d", -ret); > > > - goto err_guest_notifiers; > > > + if (vsc->inflight) { > > > + if (!vsc->inflight->addr) { > > > + ret = vhost_dev_get_inflight(&vsc->dev, > > > + vs->conf.virtqueue_size, > > > + vsc->inflight); > > > + if (ret < 0) { > > > + error_report("Error getting inflight: %d", -ret); > > > + goto err_guest_notifiers; > > > + } > > > + } > > > + > > > + ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > > > + if (ret < 0) { > > > + error_report("Error setting inflight: %d", -ret); > > > + goto err_guest_notifiers; > > > + } > > > } > > > > > > ret = vhost_dev_start(&vsc->dev, vdev, true); > > > @@ -85,9 +93,6 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > > return ret; > > > > > > err_guest_notifiers: > > > - g_free(vsc->inflight); > > > - vsc->inflight = NULL; > > > - > > > k->set_guest_notifiers(qbus->parent, vsc->dev.nvqs, false); > > > err_host_notifiers: > > > vhost_dev_disable_notifiers(&vsc->dev, vdev); > > > @@ -111,12 +116,6 @@ void vhost_scsi_common_stop(VHostSCSICommon *vsc) > > > } > > > assert(ret >= 0); > > > > > > - if (vsc->inflight) { > > > - vhost_dev_free_inflight(vsc->inflight); > > > - g_free(vsc->inflight); > > > - vsc->inflight = NULL; > > > - } > > > - > > > vhost_dev_disable_notifiers(&vsc->dev, vdev); > > > } > > > > > > -- > > > 2.41.0 > > > > >
On Sun, Oct 8, 2023 at 4:51 PM Michael S. Tsirkin <mst@redhat.com> wrote: > > On Sun, Oct 08, 2023 at 04:49:05PM +0800, Li Feng wrote: > > On Fri, Sep 29, 2023 at 8:55 AM Raphael Norwitz > > <raphael.norwitz@nutanix.com> wrote: > > > > > > > > > > > > > On Sep 22, 2023, at 7:46 AM, Li Feng <fengli@smartx.com> wrote: > > > > > > > > Currently the get_inflight_fd will be sent every time the device is started, and > > > > the backend will allocate shared memory to save the inflight state. If the > > > > backend finds that it receives the second get_inflight_fd, it will release the > > > > previous shared memory, which breaks inflight working logic. > > > > > > > > This patch is a preparation for the following patches. > > > > > > This looks identical to the v3 patch I reviewed? If I’ve missed something can you please point it out? > > Yes, nothing changed in this patch. > > > Then you should include tags such as reviewed/acked by for previous > version. if you drop tags you indicate to people they have to > re-review. > also, mentioning which patches changed in the cover letter is > a courtesy to reviewers. OK. > > > > > > > > > > > Signed-off-by: Li Feng <fengli@smartx.com> > > > > --- > > > > hw/scsi/vhost-scsi-common.c | 37 ++++++++++++++++++------------------- > > > > 1 file changed, 18 insertions(+), 19 deletions(-) > > > > > > > > diff --git a/hw/scsi/vhost-scsi-common.c b/hw/scsi/vhost-scsi-common.c > > > > index a06f01af26..a61cd0e907 100644 > > > > --- a/hw/scsi/vhost-scsi-common.c > > > > +++ b/hw/scsi/vhost-scsi-common.c > > > > @@ -52,20 +52,28 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > > > > > > > vsc->dev.acked_features = vdev->guest_features; > > > > > > > > - assert(vsc->inflight == NULL); > > > > - vsc->inflight = g_new0(struct vhost_inflight, 1); > > > > - ret = vhost_dev_get_inflight(&vsc->dev, > > > > - vs->conf.virtqueue_size, > > > > - vsc->inflight); > > > > + ret = vhost_dev_prepare_inflight(&vsc->dev, vdev); > > > > if (ret < 0) { > > > > - error_report("Error get inflight: %d", -ret); > > > > + error_report("Error setting inflight format: %d", -ret); > > > > goto err_guest_notifiers; > > > > } > > > > > > > > - ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > > > > - if (ret < 0) { > > > > - error_report("Error set inflight: %d", -ret); > > > > - goto err_guest_notifiers; > > > > + if (vsc->inflight) { > > > > + if (!vsc->inflight->addr) { > > > > + ret = vhost_dev_get_inflight(&vsc->dev, > > > > + vs->conf.virtqueue_size, > > > > + vsc->inflight); > > > > + if (ret < 0) { > > > > + error_report("Error getting inflight: %d", -ret); > > > > + goto err_guest_notifiers; > > > > + } > > > > + } > > > > + > > > > + ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); > > > > + if (ret < 0) { > > > > + error_report("Error setting inflight: %d", -ret); > > > > + goto err_guest_notifiers; > > > > + } > > > > } > > > > > > > > ret = vhost_dev_start(&vsc->dev, vdev, true); > > > > @@ -85,9 +93,6 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) > > > > return ret; > > > > > > > > err_guest_notifiers: > > > > - g_free(vsc->inflight); > > > > - vsc->inflight = NULL; > > > > - > > > > k->set_guest_notifiers(qbus->parent, vsc->dev.nvqs, false); > > > > err_host_notifiers: > > > > vhost_dev_disable_notifiers(&vsc->dev, vdev); > > > > @@ -111,12 +116,6 @@ void vhost_scsi_common_stop(VHostSCSICommon *vsc) > > > > } > > > > assert(ret >= 0); > > > > > > > > - if (vsc->inflight) { > > > > - vhost_dev_free_inflight(vsc->inflight); > > > > - g_free(vsc->inflight); > > > > - vsc->inflight = NULL; > > > > - } > > > > - > > > > vhost_dev_disable_notifiers(&vsc->dev, vdev); > > > > } > > > > > > > > -- > > > > 2.41.0 > > > > > > > >
diff --git a/hw/scsi/vhost-scsi-common.c b/hw/scsi/vhost-scsi-common.c index a06f01af26..a61cd0e907 100644 --- a/hw/scsi/vhost-scsi-common.c +++ b/hw/scsi/vhost-scsi-common.c @@ -52,20 +52,28 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) vsc->dev.acked_features = vdev->guest_features; - assert(vsc->inflight == NULL); - vsc->inflight = g_new0(struct vhost_inflight, 1); - ret = vhost_dev_get_inflight(&vsc->dev, - vs->conf.virtqueue_size, - vsc->inflight); + ret = vhost_dev_prepare_inflight(&vsc->dev, vdev); if (ret < 0) { - error_report("Error get inflight: %d", -ret); + error_report("Error setting inflight format: %d", -ret); goto err_guest_notifiers; } - ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); - if (ret < 0) { - error_report("Error set inflight: %d", -ret); - goto err_guest_notifiers; + if (vsc->inflight) { + if (!vsc->inflight->addr) { + ret = vhost_dev_get_inflight(&vsc->dev, + vs->conf.virtqueue_size, + vsc->inflight); + if (ret < 0) { + error_report("Error getting inflight: %d", -ret); + goto err_guest_notifiers; + } + } + + ret = vhost_dev_set_inflight(&vsc->dev, vsc->inflight); + if (ret < 0) { + error_report("Error setting inflight: %d", -ret); + goto err_guest_notifiers; + } } ret = vhost_dev_start(&vsc->dev, vdev, true); @@ -85,9 +93,6 @@ int vhost_scsi_common_start(VHostSCSICommon *vsc) return ret; err_guest_notifiers: - g_free(vsc->inflight); - vsc->inflight = NULL; - k->set_guest_notifiers(qbus->parent, vsc->dev.nvqs, false); err_host_notifiers: vhost_dev_disable_notifiers(&vsc->dev, vdev); @@ -111,12 +116,6 @@ void vhost_scsi_common_stop(VHostSCSICommon *vsc) } assert(ret >= 0); - if (vsc->inflight) { - vhost_dev_free_inflight(vsc->inflight); - g_free(vsc->inflight); - vsc->inflight = NULL; - } - vhost_dev_disable_notifiers(&vsc->dev, vdev); }
Currently the get_inflight_fd will be sent every time the device is started, and the backend will allocate shared memory to save the inflight state. If the backend finds that it receives the second get_inflight_fd, it will release the previous shared memory, which breaks inflight working logic. This patch is a preparation for the following patches. Signed-off-by: Li Feng <fengli@smartx.com> --- hw/scsi/vhost-scsi-common.c | 37 ++++++++++++++++++------------------- 1 file changed, 18 insertions(+), 19 deletions(-)