K 10
svn:author
V 5
andre
K 8
svn:date
V 27
2012-11-18T12:57:58.700871Z
K 7
svn:log
V 656
Extend the checksum offload fields in the mbuf packet header
with layer 2-4 header length indicators for the current packet.
It is only valid on the down/outbound path with the corresponding
csum flags specified.

The header length indicators are 8-bit wide and can specify a
length of at most 256 bytes per header which is deemed sufficient.

The header length indicators are unionized with the csum_data
field.

This simplifies setup of the offload DMA desriptors in the
drivers considerably as they don't have to parse the packet
anymore.

Adjustments to Ethernet/IP/IPv6/UDP/TCP/SCTP to correctly set
and update the header length indicators to follow.

END