RE: Disabling algorithms

Thanks brian

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Brian T. Brunner
Sent: Friday, September 24, 2004 9:28 AM
To: [email protected]
Subject: Re: Disabling algorithms


Nagle Algorithm disable:

setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,&x,sizeof(x));

For other opt(s), 
man 7 tcp
man 7 ip
man 7 socket
man setsockopt

To make setting options fairly painless (once I figured out what they were
and what values I wanted for them)
I wrote a macro
#define MAYBEDO(a,b,c,d,e,f,g) { if ((a) == 0) {(a) |=
setsockopt(c,d,e,f,g); b++;}}
and used it thus:
	int val = 1;
	int step = 0;
	int errval = 0;
	struct linger myLinger = {1,1};
                errno=0;
	
MAYBEDO(errval,step,fd,SOL_SOCKET,SO_LINGER,&myLinger,sizeof(myLinger));
	MAYBEDO(errval,step,fd,SOL_SOCKET,SO_REUSEADDR,&val,sizeof(val));
	MAYBEDO(errval,step,fd,SOL_SOCKET,SO_KEEPALIVE,&val,sizeof(val));
	val = 4;
	MAYBEDO(errval,step,fd,SOL_TCP,TCP_KEEPINTVL,&val,sizeof(val));
	MAYBEDO(errval,step,fd,SOL_TCP,TCP_KEEPIDLE,&val,sizeof(val));
	MAYBEDO(errval,step,fd,SOL_TCP,TCP_KEEPCNT,&val,sizeof(val));
	MAYBEDO(errval,step,fd,IPPROTO_TCP, TCP_NODELAY,&val,sizeof(val));

Then I check errval, step, and errno.

Brian Brunner
[email protected]
(610)796-5838

>>> [email protected] 09/23/04 10:18PM >>>
Hello, does anyone know how to disable the "Nagle Algorithm "     and the
"Delayed Acknowledgement algorithm"   in RedHat 9?

Thanks
Ryan


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