Gpu socket final2 #7
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The Endpoint was previusly generic only over the Request. This commit allows Endpoint to be used with a protocol with a slightly different header such as the QEMU GPU protocol on the socket from VHOST_USER_GPU_SET_SOCKET. https://www.qemu.org/docs/master/interop/vhost-user-gpu.html Signed-off-by: Matej Hrica <mhrica@redhat.com>
This commit adds the basic definitions of GPU commands on the socket obtained from VHOST_USER_GPU_SET_SOCKET. This also introduces a new feature flag `gpu-socket` in the vhost crate. Signed-off-by: Matej Hrica <mhrica@redhat.com>
The VHOST_USER_GPU_SET_SOCKET is only handled when the feature gpu-set-socket is enabled. This also introduces a GpuBackend for handling comunication over the socket. Signed-off-by: Matej Hrica <mhrica@redhat.com>
The VHOST_USER_GPU_UPDATE and VHOST_USER_GPU_CURSOR_UPDATE contain image data and are larger than MAX_MSG_SIZE. Current value of MAX_MSG_SIZE isn't really a limitation of the protocol, just an implementation detail limitation in this crate. This commit introduces another constant MAX_MSG_SIZE that is part of the MsgHeader trait. For now this is only used for sending messages. Consider using the more specific trait constant everywhere.
Adds a method and related structs to send VHOST_USER_GPU_GET_DISPLAY_INFO and receive the reply. Signed-off-by: Dorinda Bassey <dbassey@redhat.com> Signed-off-by: Matej Hrica <mhrica@redhat.com>
Adds a method and related structs to send VHOST_USER_GPU_GET_EDID and receive the reply. Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Adds a method that sends VHOST_USER_GPU_SCANOUT and doesn't wait for a reply. Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Adds a method and related struct to send VHOST_USER_GPU_UPDATE. The data part of the messege is not part of the struct like sugested by the spec but a separate argument to update_scanout. This is necessary because of limitations of having an unsized array inside of struct in Rust. But this aproach seems preferable anyway, because it allows the consumer of the crate to store the array in a diferent location than the struct. Signed-off-by: Dorinda Bassey <dbassey@redhat.com> Signed-off-by: Matej Hrica <mhrica@redhat.com>
Adds methods and related structs to send the VHOST_USER_GPU_DMABUF_SCANOUT and VHOST_USER_GPU_DMABUF_UPDATE update messages. Signed-off-by: Matej Hrica <mhrica@redhat.com>
Adds a method to send VHOST_USER_GPU_GET_PROTOCOL_FEATURES and receive the reply. Also adds a method to send SET_PROTOCOL_FEATURES. The VhostUserGpuProtocolFeatures bitmap defines possible feature flags. Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Adds methods to send cursor related messeges: VHOST_USER_GPU_CURSOR_POS, VHOST_USER_GPU_CURSOR_POS_HIDE and VHOST_USER_GPU_CURSOR_UPDATE. VhostUserGpuCursorUpdate's `data` field is passed as a separate argument into cursor_update method. The type is also an u8 array instead of u32 array like in the spec. Having the type be u8 array makes it easier to work with the data without unsafe code for the consumer of this crate. Having it be a separate argument is useful, because the user of the method doesn't have to copy the array into a struct. They just have to provide a reference to it. Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Adds a method and related struct to send the VHOST_USER_GPU_DMABUF_SCANOUT2 messege. Signed-off-by: Matej Hrica <mhrica@redhat.com>
The tests just cover the message sending implementation, but not the actual public methods, as these just call the tested methods with specific arguments. Signed-off-by: Matej Hrica <mhrica@redhat.com>
Signed-off-by: Matej Hrica <mhrica@redhat.com>
Compile and test with `gpu-socket` feature enabled. Signed-off-by: Matej Hrica <mhrica@redhat.com>
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