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net: hns3: add support for TX hardware checksum offload

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For the device that supports TX hardware checksum, the hardware
can calculate the checksum from the start and fill the checksum
to the offset position, which reduces the operations of
calculating the type and header length of L3/L4. So add this
feature for the HNS3 ethernet driver.

The previous simple BD description is unsuitable, rename it as
HW TX CSUM.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Huazhong Tan 2020-11-28 11:51:45 +08:00 • committed by Jakub Kicinski
commit 66d52f3bf3
8 changed files with 74 additions and 18 deletions
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