summaryrefslogtreecommitdiff
path: root/Documentation/networking
diff options
context:
space:
mode:
authorArthur Kiyanovski <akiyano@amazon.com>2022-01-07 23:23:40 +0300
committerJakub Kicinski <kuba@kernel.org>2022-01-08 06:25:50 +0300
commit273a2397fc9157c04e904b6ae37f723aa910a0d1 (patch)
tree6021aa5ff1d5c45c3856bd2d90b30be00156cdfd /Documentation/networking
parent394c48e08bbcbf4c235cd667adb8a826a49d3fd4 (diff)
downloadlinux-273a2397fc9157c04e904b6ae37f723aa910a0d1.tar.xz
net: ena: Update LLQ header length in ena documentation
LLQ entry length is 128 bytes. Therefore the maximum header in the entry is calculated by: tx_max_header_size = LLQ_ENTRY_SIZE - DESCRIPTORS_NUM_BEFORE_HEADER * 16 = 128 - 2 * 16 = 96 This patch updates the documentation so that it states the correct max header length. Signed-off-by: Shay Agroskin <shayagr@amazon.com> Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/device_drivers/ethernet/amazon/ena.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/networking/device_drivers/ethernet/amazon/ena.rst b/Documentation/networking/device_drivers/ethernet/amazon/ena.rst
index 01b2a69b0cb0..8bcb173e0353 100644
--- a/Documentation/networking/device_drivers/ethernet/amazon/ena.rst
+++ b/Documentation/networking/device_drivers/ethernet/amazon/ena.rst
@@ -135,7 +135,7 @@ The ENA driver supports two Queue Operation modes for Tx SQs:
- **Low Latency Queue (LLQ) mode or "push-mode":**
In this mode the driver pushes the transmit descriptors and the
- first 128 bytes of the packet directly to the ENA device memory
+ first 96 bytes of the packet directly to the ENA device memory
space. The rest of the packet payload is fetched by the
device. For this operation mode, the driver uses a dedicated PCI
device memory BAR, which is mapped with write-combine capability.