Re: TCP_NOPUSH on FreeBSD, TCP_CORK on Linux (was: Is sendfile all that

From: Tony Finch (
Date: Mon Feb 05 2001 - 18:49:25 EST

Alan Cox <> wrote:
>> How close is TCP_NOPUSH to behaving identically to TCP_CORK now?
>> If it does behave identically, it might be time to standardize
>> the symbolic name for this option, to make apps more portable
>> between the two OS's. (It'd be nice to also standardize the
>> numeric value, in the interest of making the ABI's more compatible, too.)
>That one isnt practical because of the way the implementations handle
>boolean options. BSD uses bitmask based option setting for the basic
>options and Linus uses switch statements

No, that's only true for some of the socket-level options. For the TCP
options there isn't a direct correspondance between the option number
and the number of the flag in the PCB.


"Dead! And yet there he stands!"
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This archive was generated by hypermail 2b29 : Wed Feb 07 2001 - 21:00:23 EST