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2 Commits

Author SHA1 Message Date
Joshua Oreman
fb7c022c2c [tcpip] Fix building under Cygwin 
Cygwin's assembler treats '/' as a comment character.

Reported-by: Steve Goodrich <steve.goodrich@se-eng.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
 2012-07-23 23:20:56 +01:00
Michael Brown
ec22e08db1 [tcpip] Add faster algorithm for calculating the TCP/IP checksum 
The generic TCP/IP checksum implementation requires approximately 10
CPU clocks per byte (as measured using the TSC).  Improve this to
approximately 0.5 CPU clocks per byte by using "lodsl ; adcl" in an
unrolled loop.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
 2012-06-28 16:02:31 +01:00