- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.
This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.
since for i386 they are defined in page size constants wich NetBSD/userland
doesn't know yet. Also undefine ptrace's __HAVE_PTRACE_MACHDEP since i386
has that but NetBSD/userland not.
point. We do this since we don't have a proper bootloader, so we can
instead parse boot arguments here.
$ ./netbsd -h
-h: unknown flag
usage: ./netbsd [-acdqsvx]
(ex. "./netbsd -s")
