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| -rw-r--r-- | Documentation/networking/device_drivers/ethernet/google/gve.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/networking/device_drivers/ethernet/google/gve.rst b/Documentation/networking/device_drivers/ethernet/google/gve.rst index 6d73ee78f3d7..31d621bca82e 100644 --- a/Documentation/networking/device_drivers/ethernet/google/gve.rst +++ b/Documentation/networking/device_drivers/ethernet/google/gve.rst @@ -52,6 +52,15 @@ Descriptor Formats GVE supports two descriptor formats: GQI and DQO. These two formats have entirely different descriptors, which will be described below. +Addressing Mode +------------------ +GVE supports two addressing modes: QPL and RDA. +QPL ("queue-page-list") mode communicates data through a set of +pre-registered pages. + +For RDA ("raw DMA addressing") mode, the set of pages is dynamic. +Therefore, the packet buffers can be anywhere in guest memory. + Registers --------- All registers are MMIO. |