size.  (The restriction on the size of free blocks remains.)

Make await_tftp() static and create tftp_get() for fetching the next TFTP
packet instead.

shared between TFTP, TFTM and MTFTP protocols.

lines of code.

s_PXENV_TFTP_READ_FILE.

Added reason for min value of 512 on s_PXENV_TFTP_OPEN::PacketSize.

the Etherboot implementation (i.e. don't do what Intel did).

PXE code now compiles without errors (though it won't actually work).

it is always used as __attribute__((...)).  Since variadic macros seem
to confuse poor doxygen, change it to a single-valued macro.

us to return proper PXE status codes, while simultaneously allowing for
more consistent error reporting (complete with verbose error messages as a
build-time option).