Re: expected behavior of PF_PACKET on NETIF_F_HW_VLAN_RX device?

[David Miller]

From: Dave Johnson <djohnson+linux-kernel@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 1 Nov 2007 17:36:22 -0400

> bad csum on tx packets as reported by tcpdump is also an issue.

We provide a tag to userspace that tcpdump should use to see that the
HW is going to checksum the packet, and therefore it should elide
trying to verify the checksums.

It's not a kernel issue.
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