tcpuopt.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 63 行

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date	97.09.21.19.30.11;	author dls;	state Dist;
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date	94.01.14.04.11.50;	author dls;	state v2e1;
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@/* tcpuopt.c - tcpuopt, ISUOPT */

#include <conf.h>
#include <kernel.h>
#include <network.h>

#define ISUOPT(flags)	(!(flags & ~(TCBF_DELACK|TCBF_BUFFER)))

/*------------------------------------------------------------------------
 *  tcpuopt - set/clear TCP user option flags  
 *------------------------------------------------------------------------
 */
int tcpuopt(ptcb, func, flags)
struct	tcb	*ptcb;
int		func;
int		flags;
{
	if (!ISUOPT(flags))
		return SYSERR;
	if (func == TCPC_SOPT)
		ptcb->tcb_flags |= flags;
	else
		ptcb->tcb_flags &= ~flags;
	return OK;
}
@


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