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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>
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@ -135,7 +135,7 @@ The ENA driver supports two Queue Operation modes for Tx SQs:
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- **Low Latency Queue (LLQ) mode or "push-mode":**
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In this mode the driver pushes the transmit descriptors and the
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first 128 bytes of the packet directly to the ENA device memory
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first 96 bytes of the packet directly to the ENA device memory
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space. The rest of the packet payload is fetched by the
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device. For this operation mode, the driver uses a dedicated PCI
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device memory BAR, which is mapped with write-combine capability.
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