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| author | Rushil Gupta <rushilg@google.com> | 2023-08-04 23:34:44 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-08-06 09:34:37 +0200 |
| commit | 5a3f8d1231073fc5f0b6f38ab8337d424ba0cfe4 (patch) | |
| tree | 93a090db647cb233efcdc9cf4e6f04c33217e36d /Documentation/networking/device_drivers | |
| parent | gve: RX path for DQO-QPL (diff) | |
| download | linux-5a3f8d1231073fc5f0b6f38ab8337d424ba0cfe4.tar.xz linux-5a3f8d1231073fc5f0b6f38ab8337d424ba0cfe4.zip | |
gve: update gve.rst
Add a note about QPL and RDA mode
Signed-off-by: Rushil Gupta <rushilg@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Signed-off-by: Bailey Forrest <bcf@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/device_drivers')
| -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. |