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MFC r347233:

Description

MFC r347233:

Remove non-functional SCTP checksum offload support for virtio.

Checksum offloading for SCTP is not currently specified for virtio.
If the hypervisor announces checksum offloading support, it means TCP
and UDP checksum offload. If an SCTP packet is sent and the host announced
checksum offload support, the hypervisor inserts the IP checksum (16-bit)
at the correct offset, but this is not the right checksum, which is a CRC32c.
This results in all outgoing packets having the wrong checksum and therefore
breaking SCTP based communications.

This patch removes SCTP checksum offloading support from the virtio
network interface.

Thanks to Felix Weinrank for making me aware of the issue.

Details

Committed
tuexenMay 16 2019, 6:26 PM
Parents
rS347877: MFC r347321:
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