[v2,2/2] vhost: introduce VHOST_USER_RESET_VRING
Checks
Commit Message
To support the reset operation for an individual virtqueue, we
introduce a new message VHOST_USER_RESET_VRING. When the feature
VIRTIO_F_RING_RESET feature has been successfully negotiated, This
message is submitted by the front-end to reset an individual
virtqueue to initial states in the back-end. The reply is needed
to ensure that the reset operation is complete.
Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---
lib/vhost/vhost.c | 2 +-
lib/vhost/vhost.h | 1 +
lib/vhost/vhost_user.c | 27 ++++++++++++++++++++++++++-
lib/vhost/vhost_user.h | 1 +
4 files changed, 29 insertions(+), 2 deletions(-)
Comments
> -----Original Message-----
> From: Kangjie Xu <kangjie.xu@linux.alibaba.com>
> Sent: Monday, September 5, 2022 11:48 AM
> To: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>
> Cc: dev@dpdk.org; xuanzhuo@linux.alibaba.com; hengqi@linux.alibaba.com;
> jasonwang@redhat.com; mst@redhat.com
> Subject: [PATCH v2 2/2] vhost: introduce VHOST_USER_RESET_VRING
>
> To support the reset operation for an individual virtqueue, we
> introduce a new message VHOST_USER_RESET_VRING. When the feature
> VIRTIO_F_RING_RESET feature has been successfully negotiated, This
> message is submitted by the front-end to reset an individual
> virtqueue to initial states in the back-end. The reply is needed
> to ensure that the reset operation is complete.
completed
>
> Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
> Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
> ---
> lib/vhost/vhost.c | 2 +-
> lib/vhost/vhost.h | 1 +
> lib/vhost/vhost_user.c | 27 ++++++++++++++++++++++++++-
> lib/vhost/vhost_user.h | 1 +
> 4 files changed, 29 insertions(+), 2 deletions(-)
>
> diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
> index 60cb05a0ff..215a1ca355 100644
> --- a/lib/vhost/vhost.c
> +++ b/lib/vhost/vhost.c
> @@ -610,7 +610,7 @@ init_vring_queue(struct virtio_net *dev, uint32_t
> vring_idx)
> vhost_user_iotlb_init(dev, vring_idx);
> }
>
> -static void
> +void
> reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
> {
> struct vhost_virtqueue *vq;
> diff --git a/lib/vhost/vhost.h b/lib/vhost/vhost.h
> index 76461a3406..eccb52842d 100644
> --- a/lib/vhost/vhost.h
> +++ b/lib/vhost/vhost.h
> @@ -791,6 +791,7 @@ get_device(int vid)
>
> int vhost_new_device(void);
> void cleanup_device(struct virtio_net *dev, int destroy);
> +void reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx);
> void reset_device(struct virtio_net *dev);
> void vhost_destroy_device(int);
> void vhost_destroy_device_notify(struct virtio_net *dev);
> diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
> index 4ad28bac45..5f7743d9d9 100644
> --- a/lib/vhost/vhost_user.c
> +++ b/lib/vhost/vhost_user.c
> @@ -2771,6 +2771,30 @@ vhost_user_set_status(struct virtio_net **pdev,
> return RTE_VHOST_MSG_RESULT_OK;
> }
>
> +static int
> +vhost_user_reset_vring(struct virtio_net **pdev,
> + struct vhu_msg_context *ctx __rte_unused,
> + int main_fd __rte_unused)
> +{
> + struct virtio_net *dev = *pdev;
> + int index = (int)ctx->msg.payload.state.index;
Why not just use unsigned int?
> +
> + VHOST_LOG_CONFIG(dev->ifname, INFO, "reset queue: queue idx: %d\n",
> index);
> +
> + if (!(dev->features & (1ULL << VIRTIO_F_RING_RESET))) {
> + return RTE_VHOST_MSG_RESULT_ERR;
> + }
braces {} are not necessary for single statement blocks
> +
> + dev->virtqueue[index]->enabled = false;
> + reset_vring_queue(dev, index);
> +
> + ctx->msg.payload.state.num = 0;
> + ctx->msg.size = sizeof(ctx->msg.payload.u64);
> + ctx->fd_num = 0;
> +
> + return RTE_VHOST_MSG_RESULT_REPLY;
> +}
IIUC, before this handler, we need to lock the queue? Using vhost_user_lock_all_queue_pairs
BTW, is this support merged in QEMU now? I remember for similar cases,
we wait for QEMU to merge first and then merge in DPDK.
Maxime, do I remember this correctly?
Thanks,
Chenbo
> +
> #define VHOST_MESSAGE_HANDLERS \
> VHOST_MESSAGE_HANDLER(VHOST_USER_NONE, NULL, false) \
> VHOST_MESSAGE_HANDLER(VHOST_USER_GET_FEATURES, vhost_user_get_features,
> false) \
> @@ -2803,7 +2827,8 @@ VHOST_MESSAGE_HANDLER(VHOST_USER_POSTCOPY_END,
> vhost_user_postcopy_end, false) \
> VHOST_MESSAGE_HANDLER(VHOST_USER_GET_INFLIGHT_FD,
> vhost_user_get_inflight_fd, false) \
> VHOST_MESSAGE_HANDLER(VHOST_USER_SET_INFLIGHT_FD,
> vhost_user_set_inflight_fd, true) \
> VHOST_MESSAGE_HANDLER(VHOST_USER_SET_STATUS, vhost_user_set_status, false)
> \
> -VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status, false)
> +VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status, false)
> \
> +VHOST_MESSAGE_HANDLER(VHOST_USER_RESET_VRING, vhost_user_reset_vring,
> false)
>
> #define VHOST_MESSAGE_HANDLER(id, handler, accepts_fd) \
> [id] = { #id, handler, accepts_fd },
> diff --git a/lib/vhost/vhost_user.h b/lib/vhost/vhost_user.h
> index 8ecca68597..51cb2fc74a 100644
> --- a/lib/vhost/vhost_user.h
> +++ b/lib/vhost/vhost_user.h
> @@ -60,6 +60,7 @@ typedef enum VhostUserRequest {
> VHOST_USER_SET_INFLIGHT_FD = 32,
> VHOST_USER_SET_STATUS = 39,
> VHOST_USER_GET_STATUS = 40,
> + VHOST_USER_RESET_VRING = 41
> } VhostUserRequest;
>
> typedef enum VhostUserSlaveRequest {
> --
> 2.32.0
On Thu, 22 Sep 2022 09:35:35 +0000, "Xia, Chenbo" <chenbo.xia@intel.com> wrote:
> > -----Original Message-----
> > From: Kangjie Xu <kangjie.xu@linux.alibaba.com>
> > Sent: Monday, September 5, 2022 11:48 AM
> > To: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>
> > Cc: dev@dpdk.org; xuanzhuo@linux.alibaba.com; hengqi@linux.alibaba.com;
> > jasonwang@redhat.com; mst@redhat.com
> > Subject: [PATCH v2 2/2] vhost: introduce VHOST_USER_RESET_VRING
> >
> > To support the reset operation for an individual virtqueue, we
> > introduce a new message VHOST_USER_RESET_VRING. When the feature
> > VIRTIO_F_RING_RESET feature has been successfully negotiated, This
> > message is submitted by the front-end to reset an individual
> > virtqueue to initial states in the back-end. The reply is needed
> > to ensure that the reset operation is complete.
>
> completed
>
> >
> > Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
> > Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
> > ---
> > lib/vhost/vhost.c | 2 +-
> > lib/vhost/vhost.h | 1 +
> > lib/vhost/vhost_user.c | 27 ++++++++++++++++++++++++++-
> > lib/vhost/vhost_user.h | 1 +
> > 4 files changed, 29 insertions(+), 2 deletions(-)
> >
> > diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
> > index 60cb05a0ff..215a1ca355 100644
> > --- a/lib/vhost/vhost.c
> > +++ b/lib/vhost/vhost.c
> > @@ -610,7 +610,7 @@ init_vring_queue(struct virtio_net *dev, uint32_t
> > vring_idx)
> > vhost_user_iotlb_init(dev, vring_idx);
> > }
> >
> > -static void
> > +void
> > reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
> > {
> > struct vhost_virtqueue *vq;
> > diff --git a/lib/vhost/vhost.h b/lib/vhost/vhost.h
> > index 76461a3406..eccb52842d 100644
> > --- a/lib/vhost/vhost.h
> > +++ b/lib/vhost/vhost.h
> > @@ -791,6 +791,7 @@ get_device(int vid)
> >
> > int vhost_new_device(void);
> > void cleanup_device(struct virtio_net *dev, int destroy);
> > +void reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx);
> > void reset_device(struct virtio_net *dev);
> > void vhost_destroy_device(int);
> > void vhost_destroy_device_notify(struct virtio_net *dev);
> > diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
> > index 4ad28bac45..5f7743d9d9 100644
> > --- a/lib/vhost/vhost_user.c
> > +++ b/lib/vhost/vhost_user.c
> > @@ -2771,6 +2771,30 @@ vhost_user_set_status(struct virtio_net **pdev,
> > return RTE_VHOST_MSG_RESULT_OK;
> > }
> >
> > +static int
> > +vhost_user_reset_vring(struct virtio_net **pdev,
> > + struct vhu_msg_context *ctx __rte_unused,
> > + int main_fd __rte_unused)
> > +{
> > + struct virtio_net *dev = *pdev;
> > + int index = (int)ctx->msg.payload.state.index;
>
> Why not just use unsigned int?
>
> > +
> > + VHOST_LOG_CONFIG(dev->ifname, INFO, "reset queue: queue idx: %d\n",
> > index);
> > +
> > + if (!(dev->features & (1ULL << VIRTIO_F_RING_RESET))) {
> > + return RTE_VHOST_MSG_RESULT_ERR;
> > + }
>
> braces {} are not necessary for single statement blocks
>
> > +
> > + dev->virtqueue[index]->enabled = false;
> > + reset_vring_queue(dev, index);
> > +
> > + ctx->msg.payload.state.num = 0;
> > + ctx->msg.size = sizeof(ctx->msg.payload.u64);
> > + ctx->fd_num = 0;
> > +
> > + return RTE_VHOST_MSG_RESULT_REPLY;
> > +}
>
> IIUC, before this handler, we need to lock the queue? Using vhost_user_lock_all_queue_pairs
>
> BTW, is this support merged in QEMU now? I remember for similar cases,
> we wait for QEMU to merge first and then merge in DPDK.
>
> Maxime, do I remember this correctly?
Yes, we are simultaneously pushing this feature to QEMU.
We have a patch for v3, maybe you missed it.
Thanks.
>
> Thanks,
> Chenbo
>
> > +
> > #define VHOST_MESSAGE_HANDLERS \
> > VHOST_MESSAGE_HANDLER(VHOST_USER_NONE, NULL, false) \
> > VHOST_MESSAGE_HANDLER(VHOST_USER_GET_FEATURES, vhost_user_get_features,
> > false) \
> > @@ -2803,7 +2827,8 @@ VHOST_MESSAGE_HANDLER(VHOST_USER_POSTCOPY_END,
> > vhost_user_postcopy_end, false) \
> > VHOST_MESSAGE_HANDLER(VHOST_USER_GET_INFLIGHT_FD,
> > vhost_user_get_inflight_fd, false) \
> > VHOST_MESSAGE_HANDLER(VHOST_USER_SET_INFLIGHT_FD,
> > vhost_user_set_inflight_fd, true) \
> > VHOST_MESSAGE_HANDLER(VHOST_USER_SET_STATUS, vhost_user_set_status, false)
> > \
> > -VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status, false)
> > +VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status, false)
> > \
> > +VHOST_MESSAGE_HANDLER(VHOST_USER_RESET_VRING, vhost_user_reset_vring,
> > false)
> >
> > #define VHOST_MESSAGE_HANDLER(id, handler, accepts_fd) \
> > [id] = { #id, handler, accepts_fd },
> > diff --git a/lib/vhost/vhost_user.h b/lib/vhost/vhost_user.h
> > index 8ecca68597..51cb2fc74a 100644
> > --- a/lib/vhost/vhost_user.h
> > +++ b/lib/vhost/vhost_user.h
> > @@ -60,6 +60,7 @@ typedef enum VhostUserRequest {
> > VHOST_USER_SET_INFLIGHT_FD = 32,
> > VHOST_USER_SET_STATUS = 39,
> > VHOST_USER_GET_STATUS = 40,
> > + VHOST_USER_RESET_VRING = 41
> > } VhostUserRequest;
> >
> > typedef enum VhostUserSlaveRequest {
> > --
> > 2.32.0
>
> -----Original Message-----
> From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
> Sent: Friday, September 23, 2022 9:42 AM
> To: Xia, Chenbo <chenbo.xia@intel.com>
> Cc: dev@dpdk.org; hengqi@linux.alibaba.com; jasonwang@redhat.com;
> mst@redhat.com; Kangjie Xu <kangjie.xu@linux.alibaba.com>;
> maxime.coquelin@redhat.com
> Subject: Re: RE: [PATCH v2 2/2] vhost: introduce VHOST_USER_RESET_VRING
>
> On Thu, 22 Sep 2022 09:35:35 +0000, "Xia, Chenbo" <chenbo.xia@intel.com>
> wrote:
> > > -----Original Message-----
> > > From: Kangjie Xu <kangjie.xu@linux.alibaba.com>
> > > Sent: Monday, September 5, 2022 11:48 AM
> > > To: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>
> > > Cc: dev@dpdk.org; xuanzhuo@linux.alibaba.com; hengqi@linux.alibaba.com;
> > > jasonwang@redhat.com; mst@redhat.com
> > > Subject: [PATCH v2 2/2] vhost: introduce VHOST_USER_RESET_VRING
> > >
> > > To support the reset operation for an individual virtqueue, we
> > > introduce a new message VHOST_USER_RESET_VRING. When the feature
> > > VIRTIO_F_RING_RESET feature has been successfully negotiated, This
> > > message is submitted by the front-end to reset an individual
> > > virtqueue to initial states in the back-end. The reply is needed
> > > to ensure that the reset operation is complete.
> >
> > completed
> >
> > >
> > > Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
> > > Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
> > > ---
> > > lib/vhost/vhost.c | 2 +-
> > > lib/vhost/vhost.h | 1 +
> > > lib/vhost/vhost_user.c | 27 ++++++++++++++++++++++++++-
> > > lib/vhost/vhost_user.h | 1 +
> > > 4 files changed, 29 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
> > > index 60cb05a0ff..215a1ca355 100644
> > > --- a/lib/vhost/vhost.c
> > > +++ b/lib/vhost/vhost.c
> > > @@ -610,7 +610,7 @@ init_vring_queue(struct virtio_net *dev, uint32_t
> > > vring_idx)
> > > vhost_user_iotlb_init(dev, vring_idx);
> > > }
> > >
> > > -static void
> > > +void
> > > reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
> > > {
> > > struct vhost_virtqueue *vq;
> > > diff --git a/lib/vhost/vhost.h b/lib/vhost/vhost.h
> > > index 76461a3406..eccb52842d 100644
> > > --- a/lib/vhost/vhost.h
> > > +++ b/lib/vhost/vhost.h
> > > @@ -791,6 +791,7 @@ get_device(int vid)
> > >
> > > int vhost_new_device(void);
> > > void cleanup_device(struct virtio_net *dev, int destroy);
> > > +void reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx);
> > > void reset_device(struct virtio_net *dev);
> > > void vhost_destroy_device(int);
> > > void vhost_destroy_device_notify(struct virtio_net *dev);
> > > diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
> > > index 4ad28bac45..5f7743d9d9 100644
> > > --- a/lib/vhost/vhost_user.c
> > > +++ b/lib/vhost/vhost_user.c
> > > @@ -2771,6 +2771,30 @@ vhost_user_set_status(struct virtio_net **pdev,
> > > return RTE_VHOST_MSG_RESULT_OK;
> > > }
> > >
> > > +static int
> > > +vhost_user_reset_vring(struct virtio_net **pdev,
> > > + struct vhu_msg_context *ctx __rte_unused,
> > > + int main_fd __rte_unused)
> > > +{
> > > + struct virtio_net *dev = *pdev;
> > > + int index = (int)ctx->msg.payload.state.index;
> >
> > Why not just use unsigned int?
> >
> > > +
> > > + VHOST_LOG_CONFIG(dev->ifname, INFO, "reset queue: queue idx: %d\n",
> > > index);
> > > +
> > > + if (!(dev->features & (1ULL << VIRTIO_F_RING_RESET))) {
> > > + return RTE_VHOST_MSG_RESULT_ERR;
> > > + }
> >
> > braces {} are not necessary for single statement blocks
> >
> > > +
> > > + dev->virtqueue[index]->enabled = false;
> > > + reset_vring_queue(dev, index);
> > > +
> > > + ctx->msg.payload.state.num = 0;
> > > + ctx->msg.size = sizeof(ctx->msg.payload.u64);
> > > + ctx->fd_num = 0;
> > > +
> > > + return RTE_VHOST_MSG_RESULT_REPLY;
> > > +}
> >
> > IIUC, before this handler, we need to lock the queue? Using
> vhost_user_lock_all_queue_pairs
> >
> > BTW, is this support merged in QEMU now? I remember for similar cases,
> > we wait for QEMU to merge first and then merge in DPDK.
> >
> > Maxime, do I remember this correctly?
>
>
> Yes, we are simultaneously pushing this feature to QEMU.
>
> We have a patch for v3, maybe you missed it.
>
> Thanks.
Oops, sorry. I did miss that. And please ping when the QEMU side
is merged.
Thanks,
Chenbo
>
>
> >
> > Thanks,
> > Chenbo
> >
> > > +
> > > #define VHOST_MESSAGE_HANDLERS \
> > > VHOST_MESSAGE_HANDLER(VHOST_USER_NONE, NULL, false) \
> > > VHOST_MESSAGE_HANDLER(VHOST_USER_GET_FEATURES,
> vhost_user_get_features,
> > > false) \
> > > @@ -2803,7 +2827,8 @@ VHOST_MESSAGE_HANDLER(VHOST_USER_POSTCOPY_END,
> > > vhost_user_postcopy_end, false) \
> > > VHOST_MESSAGE_HANDLER(VHOST_USER_GET_INFLIGHT_FD,
> > > vhost_user_get_inflight_fd, false) \
> > > VHOST_MESSAGE_HANDLER(VHOST_USER_SET_INFLIGHT_FD,
> > > vhost_user_set_inflight_fd, true) \
> > > VHOST_MESSAGE_HANDLER(VHOST_USER_SET_STATUS, vhost_user_set_status,
> false)
> > > \
> > > -VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status,
> false)
> > > +VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status,
> false)
> > > \
> > > +VHOST_MESSAGE_HANDLER(VHOST_USER_RESET_VRING, vhost_user_reset_vring,
> > > false)
> > >
> > > #define VHOST_MESSAGE_HANDLER(id, handler, accepts_fd) \
> > > [id] = { #id, handler, accepts_fd },
> > > diff --git a/lib/vhost/vhost_user.h b/lib/vhost/vhost_user.h
> > > index 8ecca68597..51cb2fc74a 100644
> > > --- a/lib/vhost/vhost_user.h
> > > +++ b/lib/vhost/vhost_user.h
> > > @@ -60,6 +60,7 @@ typedef enum VhostUserRequest {
> > > VHOST_USER_SET_INFLIGHT_FD = 32,
> > > VHOST_USER_SET_STATUS = 39,
> > > VHOST_USER_GET_STATUS = 40,
> > > + VHOST_USER_RESET_VRING = 41
> > > } VhostUserRequest;
> > >
> > > typedef enum VhostUserSlaveRequest {
> > > --
> > > 2.32.0
> >
@@ -610,7 +610,7 @@ init_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
vhost_user_iotlb_init(dev, vring_idx);
}
-static void
+void
reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
{
struct vhost_virtqueue *vq;
@@ -791,6 +791,7 @@ get_device(int vid)
int vhost_new_device(void);
void cleanup_device(struct virtio_net *dev, int destroy);
+void reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx);
void reset_device(struct virtio_net *dev);
void vhost_destroy_device(int);
void vhost_destroy_device_notify(struct virtio_net *dev);
@@ -2771,6 +2771,30 @@ vhost_user_set_status(struct virtio_net **pdev,
return RTE_VHOST_MSG_RESULT_OK;
}
+static int
+vhost_user_reset_vring(struct virtio_net **pdev,
+ struct vhu_msg_context *ctx __rte_unused,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+ int index = (int)ctx->msg.payload.state.index;
+
+ VHOST_LOG_CONFIG(dev->ifname, INFO, "reset queue: queue idx: %d\n", index);
+
+ if (!(dev->features & (1ULL << VIRTIO_F_RING_RESET))) {
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ dev->virtqueue[index]->enabled = false;
+ reset_vring_queue(dev, index);
+
+ ctx->msg.payload.state.num = 0;
+ ctx->msg.size = sizeof(ctx->msg.payload.u64);
+ ctx->fd_num = 0;
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
+}
+
#define VHOST_MESSAGE_HANDLERS \
VHOST_MESSAGE_HANDLER(VHOST_USER_NONE, NULL, false) \
VHOST_MESSAGE_HANDLER(VHOST_USER_GET_FEATURES, vhost_user_get_features, false) \
@@ -2803,7 +2827,8 @@ VHOST_MESSAGE_HANDLER(VHOST_USER_POSTCOPY_END, vhost_user_postcopy_end, false) \
VHOST_MESSAGE_HANDLER(VHOST_USER_GET_INFLIGHT_FD, vhost_user_get_inflight_fd, false) \
VHOST_MESSAGE_HANDLER(VHOST_USER_SET_INFLIGHT_FD, vhost_user_set_inflight_fd, true) \
VHOST_MESSAGE_HANDLER(VHOST_USER_SET_STATUS, vhost_user_set_status, false) \
-VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status, false)
+VHOST_MESSAGE_HANDLER(VHOST_USER_GET_STATUS, vhost_user_get_status, false) \
+VHOST_MESSAGE_HANDLER(VHOST_USER_RESET_VRING, vhost_user_reset_vring, false)
#define VHOST_MESSAGE_HANDLER(id, handler, accepts_fd) \
[id] = { #id, handler, accepts_fd },
@@ -60,6 +60,7 @@ typedef enum VhostUserRequest {
VHOST_USER_SET_INFLIGHT_FD = 32,
VHOST_USER_SET_STATUS = 39,
VHOST_USER_GET_STATUS = 40,
+ VHOST_USER_RESET_VRING = 41
} VhostUserRequest;
typedef enum VhostUserSlaveRequest {