diff options
Diffstat (limited to 'content.tex')
| -rw-r--r-- | content.tex | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/content.tex b/content.tex index ede0ef6..4180296 100644 --- a/content.tex +++ b/content.tex @@ -277,15 +277,15 @@ virtqueues\footnote{For example, the simplest network device has one virtqueue f transmit and one for receive.}. Driver makes requests available to device by adding -an available buffer to the queue - i.e. adding a buffer +an available buffer to the queue, i.e., adding a buffer describing the request to a virtqueue, and optionally triggering -a driver event - i.e. sending an available buffer notification +a driver event, i.e., sending an available buffer notification to the device. Device executes the requests and - when complete - adds -a used buffer to the queue - i.e. lets the driver +a used buffer to the queue, i.e., lets the driver know by marking the buffer as used. Device can then trigger -a device event - i.e. send a used buffer notification to the driver. +a device event, i.e., send a used buffer notification to the driver. Device reports the number of bytes it has written to memory for each buffer it uses. This is referred to as ``used length''. @@ -489,8 +489,8 @@ of a device are live once the device has been reset. \drivernormative{\subsection}{Device Cleanup}{General Initialization And Device Operation / Device Cleanup} -A driver MUST NOT alter virtqueue entries for exposed buffers - -i.e. buffers which have been +A driver MUST NOT alter virtqueue entries for exposed buffers, +i.e., buffers which have been made available to the device (and not been used by the device) of a live virtqueue. |