search for: virtqueue_buf

...eeds_kick; > + > + /* Number of bytes available to read from the virtqueue buffer. */ > + unsigned int readable; > + > + /* > + * Buffer in which all virtio transfers take place. Buffer size is the > + * maximum legal TPM command or response message size. > + */ > + u8 virtqueue_buffer[TPM_BUFSIZE]; > +}; > + > +/* > + * Wait for ownership of the virtqueue buffer. > + * > + * The why-string should begin with "waiting to..." or "waiting for..." with no > + * trailing newline. It will appear in log output. > + * > + * Returns zero f...

The virtqueue_add_buf function has two limitations: 1) it requires the caller to provide all the buffers in a single call; 2) it does not support chained scatterlists: the buffers must be provided as an array of struct scatterlist. Because of these limitations, virtio-scsi has to copy each request into a scatterlist internal to the driver. It cannot just use the one that was prepared by the

The virtqueue_add_buf function has two limitations: 1) it requires the caller to provide all the buffers in a single call; 2) it does not support chained scatterlists: the buffers must be provided as an array of struct scatterlist. Because of these limitations, virtio-scsi has to copy each request into a scatterlist internal to the driver. It cannot just use the one that was prepared by the

...rom the virtqueue buffer. */ > >> + unsigned int readable; > >> + > >> + /* > >> + * Buffer in which all virtio transfers take place. Buffer size is the > >> + * maximum legal TPM command or response message size. > >> + */ > >> + u8 virtqueue_buffer[TPM_BUFSIZE]; > >> +}; > >> + > >> +/* > >> + * Wait for ownership of the virtqueue buffer. > >> + * > >> + * The why-string should begin with "waiting to..." or "waiting for..." with no > >> + * trailing newline....

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's