Alexander Duyck 09067122db
net/mlx4_en: Add support for inner IPv6 checksum offloads and TSO ...
>From what I can tell the ConnectX-3 will support an inner IPv6 checksum and
segmentation offload, however it cannot support outer IPv6 headers. This
assumption is based on the fact that I could see the checksum being
offloaded for inner header on IPv4 tunnels, but not on IPv6 tunnels.
For this reason I am adding the feature to the hw_enc_features and adding
an extra check to the features_check call that will disable GSO and
checksum offload in the case that the encapsulated frame has an outer IP
version of that is not 4. The check in mlx4_en_features_check could be
removed if at some point in the future a fix is found that allows the
hardware to offload segmentation/checksum on tunnels with an outer IPv6
header.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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