Enable VHOST_USER_GET_CONFIG/VHOST_USER_SET_CONFIG messages in
libvhost-user library, users can implement their own I/O target
based on the library. This enable the virtio config space delivered
between QEMU host device and the I/O target.
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
---
contrib/libvhost-user/libvhost-user.c | 54 +++++++++++++++++++++++++++++++++++
contrib/libvhost-user/libvhost-user.h | 34 +++++++++++++++++++++-
2 files changed, 87 insertions(+), 1 deletion(-)
diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c
index f409bd3..9e12eb1 100644
--- a/contrib/libvhost-user/libvhost-user.c
+++ b/contrib/libvhost-user/libvhost-user.c
@@ -84,6 +84,8 @@ vu_request_to_string(unsigned int req)
REQ(VHOST_USER_SET_SLAVE_REQ_FD),
REQ(VHOST_USER_IOTLB_MSG),
REQ(VHOST_USER_SET_VRING_ENDIAN),
+ REQ(VHOST_USER_GET_CONFIG),
+ REQ(VHOST_USER_SET_CONFIG),
REQ(VHOST_USER_MAX),
};
#undef REQ
@@ -798,6 +800,53 @@ vu_set_slave_req_fd(VuDev *dev, VhostUserMsg *vmsg)
}
static bool
+vu_get_config(VuDev *dev, VhostUserMsg *vmsg)
+{
+ int ret = -1;
+
+ if (dev->iface->get_config) {
+ ret = dev->iface->get_config(dev, vmsg->payload.config.region,
+ vmsg->payload.config.size);
+ }
+
+ if (ret) {
+ /* resize to zero to indicate an error to master */
+ vmsg->size = 0;
+ }
+
+ return true;
+}
+
+static bool
+vu_set_config(VuDev *dev, VhostUserMsg *vmsg)
+{
+ int ret = -1;
+ bool reply_supported = !!(dev->protocol_features &
+ (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK));
+
+ if (dev->iface->set_config) {
+ ret = dev->iface->set_config(dev, vmsg->payload.config.region,
+ vmsg->payload.config.offset,
+ vmsg->payload.config.size,
+ vmsg->payload.config.flags);
+ }
+
+ vmsg->size = sizeof(vmsg->payload.u64);
+ if (!ret) {
+ vmsg->payload.u64 = 0;
+ } else {
+ /* indicate an error in case reply supported */
+ vmsg->payload.u64 = 1;
+ }
+
+ if (reply_supported) {
+ return true;
+ }
+
+ return false;
+}
+
+static bool
vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
{
int do_reply = 0;
@@ -862,6 +911,10 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
return vu_set_vring_enable_exec(dev, vmsg);
case VHOST_USER_SET_SLAVE_REQ_FD:
return vu_set_slave_req_fd(dev, vmsg);
+ case VHOST_USER_GET_CONFIG:
+ return vu_get_config(dev, vmsg);
+ case VHOST_USER_SET_CONFIG:
+ return vu_set_config(dev, vmsg);
case VHOST_USER_NONE:
break;
default:
@@ -970,6 +1023,7 @@ vu_init(VuDev *dev,
dev->iface = iface;
dev->log_call_fd = -1;
dev->slave_fd = -1;
+
for (i = 0; i < VHOST_MAX_NR_VIRTQUEUE; i++) {
dev->vq[i] = (VuVirtq) {
.call_fd = -1, .kick_fd = -1, .err_fd = -1,
diff --git a/contrib/libvhost-user/libvhost-user.h b/contrib/libvhost-user/libvhost-user.h
index 2f5864b..b38959e 100644
--- a/contrib/libvhost-user/libvhost-user.h
+++ b/contrib/libvhost-user/libvhost-user.h
@@ -30,6 +30,16 @@
#define VHOST_MEMORY_MAX_NREGIONS 8
+typedef enum VhostSetConfigType {
+ VHOST_SET_CONFIG_TYPE_MASTER = 0,
+ VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
+} VhostSetConfigType;
+
+/*
+ * Maximum size of virtio device config space
+ */
+#define VHOST_USER_MAX_CONFIG_SIZE 256
+
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_MQ = 0,
VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
@@ -38,7 +48,6 @@ enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_NET_MTU = 4,
VHOST_USER_PROTOCOL_F_SLAVE_REQ = 5,
VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6,
-
VHOST_USER_PROTOCOL_F_MAX
};
@@ -69,6 +78,8 @@ typedef enum VhostUserRequest {
VHOST_USER_SET_SLAVE_REQ_FD = 21,
VHOST_USER_IOTLB_MSG = 22,
VHOST_USER_SET_VRING_ENDIAN = 23,
+ VHOST_USER_GET_CONFIG = 24,
+ VHOST_USER_SET_CONFIG = 25,
VHOST_USER_MAX
} VhostUserRequest;
@@ -90,6 +101,18 @@ typedef struct VhostUserLog {
uint64_t mmap_offset;
} VhostUserLog;
+typedef struct VhostUserConfig {
+ uint32_t offset;
+ uint32_t size;
+ uint32_t flags;
+ uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
+} VhostUserConfig;
+
+static VhostUserConfig c __attribute__ ((unused));
+#define VHOST_USER_CONFIG_HDR_SIZE (sizeof(c.offset) \
+ + sizeof(c.size) \
+ + sizeof(c.flags))
+
#if defined(_WIN32)
# define VU_PACKED __attribute__((gcc_struct, packed))
#else
@@ -112,6 +135,7 @@ typedef struct VhostUserMsg {
struct vhost_vring_addr addr;
VhostUserMemory memory;
VhostUserLog log;
+ VhostUserConfig config;
} payload;
int fds[VHOST_MEMORY_MAX_NREGIONS];
@@ -140,6 +164,10 @@ typedef int (*vu_process_msg_cb) (VuDev *dev, VhostUserMsg *vmsg,
int *do_reply);
typedef void (*vu_queue_set_started_cb) (VuDev *dev, int qidx, bool started);
typedef bool (*vu_queue_is_processed_in_order_cb) (VuDev *dev, int qidx);
+typedef int (*vu_get_config_cb) (VuDev *dev, uint8_t *config, uint32_t len);
+typedef int (*vu_set_config_cb) (VuDev *dev, const uint8_t *data,
+ uint32_t offset, uint32_t size,
+ uint32_t flags);
typedef struct VuDevIface {
/* called by VHOST_USER_GET_FEATURES to get the features bitmask */
@@ -162,6 +190,10 @@ typedef struct VuDevIface {
* on unmanaged exit/crash.
*/
vu_queue_is_processed_in_order_cb queue_is_processed_in_order;
+ /* get the config space of the device */
+ vu_get_config_cb get_config;
+ /* set the config space of the device */
+ vu_set_config_cb set_config;
} VuDevIface;
typedef void (*vu_queue_handler_cb) (VuDev *dev, int qidx);
--
1.9.3
Hi
On Tue, Jan 2, 2018 at 4:55 AM, Changpeng Liu <changpeng.liu@intel.com> wrote:
> Enable VHOST_USER_GET_CONFIG/VHOST_USER_SET_CONFIG messages in
> libvhost-user library, users can implement their own I/O target
> based on the library. This enable the virtio config space delivered
> between QEMU host device and the I/O target.
>
> Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
> ---
> contrib/libvhost-user/libvhost-user.c | 54 +++++++++++++++++++++++++++++++++++
> contrib/libvhost-user/libvhost-user.h | 34 +++++++++++++++++++++-
> 2 files changed, 87 insertions(+), 1 deletion(-)
>
> diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c
> index f409bd3..9e12eb1 100644
> --- a/contrib/libvhost-user/libvhost-user.c
> +++ b/contrib/libvhost-user/libvhost-user.c
> @@ -84,6 +84,8 @@ vu_request_to_string(unsigned int req)
> REQ(VHOST_USER_SET_SLAVE_REQ_FD),
> REQ(VHOST_USER_IOTLB_MSG),
> REQ(VHOST_USER_SET_VRING_ENDIAN),
> + REQ(VHOST_USER_GET_CONFIG),
> + REQ(VHOST_USER_SET_CONFIG),
> REQ(VHOST_USER_MAX),
> };
> #undef REQ
> @@ -798,6 +800,53 @@ vu_set_slave_req_fd(VuDev *dev, VhostUserMsg *vmsg)
> }
>
> static bool
> +vu_get_config(VuDev *dev, VhostUserMsg *vmsg)
> +{
> + int ret = -1;
> +
> + if (dev->iface->get_config) {
> + ret = dev->iface->get_config(dev, vmsg->payload.config.region,
> + vmsg->payload.config.size);
> + }
> +
> + if (ret) {
> + /* resize to zero to indicate an error to master */
> + vmsg->size = 0;
> + }
> +
> + return true;
> +}
> +
> +static bool
> +vu_set_config(VuDev *dev, VhostUserMsg *vmsg)
> +{
> + int ret = -1;
> + bool reply_supported = !!(dev->protocol_features &
> + (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK));
> +
None of the other messages in libvhost-user support the REPLY_ACK
flag. Do you need it? If not, please drop it.
If you need it, it's a better idea to make the reply explicit and
mandatory in the protocol for SET_CONFIG.
> + if (dev->iface->set_config) {
> + ret = dev->iface->set_config(dev, vmsg->payload.config.region,
> + vmsg->payload.config.offset,
> + vmsg->payload.config.size,
> + vmsg->payload.config.flags);
> + }
> +
> + vmsg->size = sizeof(vmsg->payload.u64);
> + if (!ret) {
> + vmsg->payload.u64 = 0;
> + } else {
> + /* indicate an error in case reply supported */
> + vmsg->payload.u64 = 1;
> + }
> +
> + if (reply_supported) {
> + return true;
> + }
> +
> + return false;
> +}
> +
> +static bool
> vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
> {
> int do_reply = 0;
> @@ -862,6 +911,10 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
> return vu_set_vring_enable_exec(dev, vmsg);
> case VHOST_USER_SET_SLAVE_REQ_FD:
> return vu_set_slave_req_fd(dev, vmsg);
> + case VHOST_USER_GET_CONFIG:
> + return vu_get_config(dev, vmsg);
> + case VHOST_USER_SET_CONFIG:
> + return vu_set_config(dev, vmsg);
> case VHOST_USER_NONE:
> break;
> default:
> @@ -970,6 +1023,7 @@ vu_init(VuDev *dev,
> dev->iface = iface;
> dev->log_call_fd = -1;
> dev->slave_fd = -1;
> +
unrelated coding style change, please drop
> for (i = 0; i < VHOST_MAX_NR_VIRTQUEUE; i++) {
> dev->vq[i] = (VuVirtq) {
> .call_fd = -1, .kick_fd = -1, .err_fd = -1,
> diff --git a/contrib/libvhost-user/libvhost-user.h b/contrib/libvhost-user/libvhost-user.h
> index 2f5864b..b38959e 100644
> --- a/contrib/libvhost-user/libvhost-user.h
> +++ b/contrib/libvhost-user/libvhost-user.h
> @@ -30,6 +30,16 @@
>
> #define VHOST_MEMORY_MAX_NREGIONS 8
>
> +typedef enum VhostSetConfigType {
> + VHOST_SET_CONFIG_TYPE_MASTER = 0,
> + VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
> +} VhostSetConfigType;
> +
> +/*
> + * Maximum size of virtio device config space
> + */
> +#define VHOST_USER_MAX_CONFIG_SIZE 256
> +
> enum VhostUserProtocolFeature {
> VHOST_USER_PROTOCOL_F_MQ = 0,
> VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
> @@ -38,7 +48,6 @@ enum VhostUserProtocolFeature {
> VHOST_USER_PROTOCOL_F_NET_MTU = 4,
> VHOST_USER_PROTOCOL_F_SLAVE_REQ = 5,
> VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6,
> -
unrelated coding style change, please drop
> VHOST_USER_PROTOCOL_F_MAX
> };
>
> @@ -69,6 +78,8 @@ typedef enum VhostUserRequest {
> VHOST_USER_SET_SLAVE_REQ_FD = 21,
> VHOST_USER_IOTLB_MSG = 22,
> VHOST_USER_SET_VRING_ENDIAN = 23,
> + VHOST_USER_GET_CONFIG = 24,
> + VHOST_USER_SET_CONFIG = 25,
> VHOST_USER_MAX
> } VhostUserRequest;
>
> @@ -90,6 +101,18 @@ typedef struct VhostUserLog {
> uint64_t mmap_offset;
> } VhostUserLog;
>
> +typedef struct VhostUserConfig {
> + uint32_t offset;
> + uint32_t size;
> + uint32_t flags;
> + uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
> +} VhostUserConfig;
> +
> +static VhostUserConfig c __attribute__ ((unused));
> +#define VHOST_USER_CONFIG_HDR_SIZE (sizeof(c.offset) \
> + + sizeof(c.size) \
> + + sizeof(c.flags))
> +
> #if defined(_WIN32)
> # define VU_PACKED __attribute__((gcc_struct, packed))
> #else
> @@ -112,6 +135,7 @@ typedef struct VhostUserMsg {
> struct vhost_vring_addr addr;
> VhostUserMemory memory;
> VhostUserLog log;
> + VhostUserConfig config;
> } payload;
>
> int fds[VHOST_MEMORY_MAX_NREGIONS];
> @@ -140,6 +164,10 @@ typedef int (*vu_process_msg_cb) (VuDev *dev, VhostUserMsg *vmsg,
> int *do_reply);
> typedef void (*vu_queue_set_started_cb) (VuDev *dev, int qidx, bool started);
> typedef bool (*vu_queue_is_processed_in_order_cb) (VuDev *dev, int qidx);
> +typedef int (*vu_get_config_cb) (VuDev *dev, uint8_t *config, uint32_t len);
> +typedef int (*vu_set_config_cb) (VuDev *dev, const uint8_t *data,
> + uint32_t offset, uint32_t size,
> + uint32_t flags);
>
> typedef struct VuDevIface {
> /* called by VHOST_USER_GET_FEATURES to get the features bitmask */
> @@ -162,6 +190,10 @@ typedef struct VuDevIface {
> * on unmanaged exit/crash.
> */
> vu_queue_is_processed_in_order_cb queue_is_processed_in_order;
> + /* get the config space of the device */
> + vu_get_config_cb get_config;
> + /* set the config space of the device */
> + vu_set_config_cb set_config;
> } VuDevIface;
>
> typedef void (*vu_queue_handler_cb) (VuDev *dev, int qidx);
> --
> 1.9.3
>
--
Marc-André Lureau
> -----Original Message-----
> From: Marc-André Lureau [mailto:marcandre.lureau@gmail.com]
> Sent: Tuesday, January 2, 2018 11:30 PM
> To: Liu, Changpeng <changpeng.liu@intel.com>
> Cc: QEMU <qemu-devel@nongnu.org>; Harris, James R <james.r.harris@intel.com>;
> Michael S. Tsirkin <mst@redhat.com>; Stefan Hajnoczi <stefanha@gmail.com>;
> Paolo Bonzini <pbonzini@redhat.com>; Felipe Franciosi <felipe@nutanix.com>
> Subject: Re: [Qemu-devel] [PATCH v8 3/4] contrib/libvhost-user: enable virtio
> config space messages
>
> Hi
>
> On Tue, Jan 2, 2018 at 4:55 AM, Changpeng Liu <changpeng.liu@intel.com> wrote:
> > Enable VHOST_USER_GET_CONFIG/VHOST_USER_SET_CONFIG messages in
> > libvhost-user library, users can implement their own I/O target
> > based on the library. This enable the virtio config space delivered
> > between QEMU host device and the I/O target.
> >
> > Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
> > ---
> > contrib/libvhost-user/libvhost-user.c | 54
> +++++++++++++++++++++++++++++++++++
> > contrib/libvhost-user/libvhost-user.h | 34 +++++++++++++++++++++-
> > 2 files changed, 87 insertions(+), 1 deletion(-)
> >
> > diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-
> user.c
> > index f409bd3..9e12eb1 100644
> > --- a/contrib/libvhost-user/libvhost-user.c
> > +++ b/contrib/libvhost-user/libvhost-user.c
> > @@ -84,6 +84,8 @@ vu_request_to_string(unsigned int req)
> > REQ(VHOST_USER_SET_SLAVE_REQ_FD),
> > REQ(VHOST_USER_IOTLB_MSG),
> > REQ(VHOST_USER_SET_VRING_ENDIAN),
> > + REQ(VHOST_USER_GET_CONFIG),
> > + REQ(VHOST_USER_SET_CONFIG),
> > REQ(VHOST_USER_MAX),
> > };
> > #undef REQ
> > @@ -798,6 +800,53 @@ vu_set_slave_req_fd(VuDev *dev, VhostUserMsg *vmsg)
> > }
> >
> > static bool
> > +vu_get_config(VuDev *dev, VhostUserMsg *vmsg)
> > +{
> > + int ret = -1;
> > +
> > + if (dev->iface->get_config) {
> > + ret = dev->iface->get_config(dev, vmsg->payload.config.region,
> > + vmsg->payload.config.size);
> > + }
> > +
> > + if (ret) {
> > + /* resize to zero to indicate an error to master */
> > + vmsg->size = 0;
> > + }
> > +
> > + return true;
> > +}
> > +
> > +static bool
> > +vu_set_config(VuDev *dev, VhostUserMsg *vmsg)
> > +{
> > + int ret = -1;
> > + bool reply_supported = !!(dev->protocol_features &
> > + (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK));
> > +
>
> None of the other messages in libvhost-user support the REPLY_ACK
> flag. Do you need it? If not, please drop it.
Ok, will drop it.
>
> If you need it, it's a better idea to make the reply explicit and
> mandatory in the protocol for SET_CONFIG.
>
> > + if (dev->iface->set_config) {
> > + ret = dev->iface->set_config(dev, vmsg->payload.config.region,
> > + vmsg->payload.config.offset,
> > + vmsg->payload.config.size,
> > + vmsg->payload.config.flags);
> > + }
> > +
> > + vmsg->size = sizeof(vmsg->payload.u64);
> > + if (!ret) {
> > + vmsg->payload.u64 = 0;
> > + } else {
> > + /* indicate an error in case reply supported */
> > + vmsg->payload.u64 = 1;
> > + }
> > +
> > + if (reply_supported) {
> > + return true;
> > + }
> > +
> > + return false;
> > +}
> > +
> > +static bool
> > vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
> > {
> > int do_reply = 0;
> > @@ -862,6 +911,10 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
> > return vu_set_vring_enable_exec(dev, vmsg);
> > case VHOST_USER_SET_SLAVE_REQ_FD:
> > return vu_set_slave_req_fd(dev, vmsg);
> > + case VHOST_USER_GET_CONFIG:
> > + return vu_get_config(dev, vmsg);
> > + case VHOST_USER_SET_CONFIG:
> > + return vu_set_config(dev, vmsg);
> > case VHOST_USER_NONE:
> > break;
> > default:
> > @@ -970,6 +1023,7 @@ vu_init(VuDev *dev,
> > dev->iface = iface;
> > dev->log_call_fd = -1;
> > dev->slave_fd = -1;
> > +
>
> unrelated coding style change, please drop
Thanks.
>
> > for (i = 0; i < VHOST_MAX_NR_VIRTQUEUE; i++) {
> > dev->vq[i] = (VuVirtq) {
> > .call_fd = -1, .kick_fd = -1, .err_fd = -1,
> > diff --git a/contrib/libvhost-user/libvhost-user.h b/contrib/libvhost-user/libvhost-
> user.h
> > index 2f5864b..b38959e 100644
> > --- a/contrib/libvhost-user/libvhost-user.h
> > +++ b/contrib/libvhost-user/libvhost-user.h
> > @@ -30,6 +30,16 @@
> >
> > #define VHOST_MEMORY_MAX_NREGIONS 8
> >
> > +typedef enum VhostSetConfigType {
> > + VHOST_SET_CONFIG_TYPE_MASTER = 0,
> > + VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
> > +} VhostSetConfigType;
> > +
> > +/*
> > + * Maximum size of virtio device config space
> > + */
> > +#define VHOST_USER_MAX_CONFIG_SIZE 256
> > +
> > enum VhostUserProtocolFeature {
> > VHOST_USER_PROTOCOL_F_MQ = 0,
> > VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
> > @@ -38,7 +48,6 @@ enum VhostUserProtocolFeature {
> > VHOST_USER_PROTOCOL_F_NET_MTU = 4,
> > VHOST_USER_PROTOCOL_F_SLAVE_REQ = 5,
> > VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6,
> > -
>
>
> unrelated coding style change, please drop
Thanks.
>
> > VHOST_USER_PROTOCOL_F_MAX
> > };
> >
> > @@ -69,6 +78,8 @@ typedef enum VhostUserRequest {
> > VHOST_USER_SET_SLAVE_REQ_FD = 21,
> > VHOST_USER_IOTLB_MSG = 22,
> > VHOST_USER_SET_VRING_ENDIAN = 23,
> > + VHOST_USER_GET_CONFIG = 24,
> > + VHOST_USER_SET_CONFIG = 25,
> > VHOST_USER_MAX
> > } VhostUserRequest;
> >
> > @@ -90,6 +101,18 @@ typedef struct VhostUserLog {
> > uint64_t mmap_offset;
> > } VhostUserLog;
> >
> > +typedef struct VhostUserConfig {
> > + uint32_t offset;
> > + uint32_t size;
> > + uint32_t flags;
> > + uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
> > +} VhostUserConfig;
> > +
> > +static VhostUserConfig c __attribute__ ((unused));
> > +#define VHOST_USER_CONFIG_HDR_SIZE (sizeof(c.offset) \
> > + + sizeof(c.size) \
> > + + sizeof(c.flags))
> > +
> > #if defined(_WIN32)
> > # define VU_PACKED __attribute__((gcc_struct, packed))
> > #else
> > @@ -112,6 +135,7 @@ typedef struct VhostUserMsg {
> > struct vhost_vring_addr addr;
> > VhostUserMemory memory;
> > VhostUserLog log;
> > + VhostUserConfig config;
> > } payload;
> >
> > int fds[VHOST_MEMORY_MAX_NREGIONS];
> > @@ -140,6 +164,10 @@ typedef int (*vu_process_msg_cb) (VuDev *dev,
> VhostUserMsg *vmsg,
> > int *do_reply);
> > typedef void (*vu_queue_set_started_cb) (VuDev *dev, int qidx, bool started);
> > typedef bool (*vu_queue_is_processed_in_order_cb) (VuDev *dev, int qidx);
> > +typedef int (*vu_get_config_cb) (VuDev *dev, uint8_t *config, uint32_t len);
> > +typedef int (*vu_set_config_cb) (VuDev *dev, const uint8_t *data,
> > + uint32_t offset, uint32_t size,
> > + uint32_t flags);
> >
> > typedef struct VuDevIface {
> > /* called by VHOST_USER_GET_FEATURES to get the features bitmask */
> > @@ -162,6 +190,10 @@ typedef struct VuDevIface {
> > * on unmanaged exit/crash.
> > */
> > vu_queue_is_processed_in_order_cb queue_is_processed_in_order;
> > + /* get the config space of the device */
> > + vu_get_config_cb get_config;
> > + /* set the config space of the device */
> > + vu_set_config_cb set_config;
> > } VuDevIface;
> >
> > typedef void (*vu_queue_handler_cb) (VuDev *dev, int qidx);
> > --
> > 1.9.3
> >
>
>
> --
> Marc-André Lureau
© 2016 - 2025 Red Hat, Inc.