1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 #include "mt.h" 31 #include "rpc_mt.h" 32 #include <stdio.h> 33 #include <rpc/rpc.h> 34 #include <errno.h> 35 #include <tiuser.h> 36 #include <string.h> 37 #include <stropts.h> 38 #include <netinet/tcp.h> 39 #include <stdlib.h> 40 41 #define MAXOPTSIZE 64 42 43 int 44 __td_setnodelay(int fd) 45 { 46 int rval = 0; 47 static mutex_t td_opt_lock = DEFAULTMUTEX; 48 static struct t_optmgmt t_optreq, t_optret; 49 int state; 50 51 52 /* VARIABLES PROTECTED BY td_opt_lock: t_optreq, t_optret */ 53 54 if ((state = t_getstate(fd)) == -1) 55 return (-1); 56 57 (void) mutex_lock(&td_opt_lock); 58 if ((state == T_IDLE) && (t_optreq.flags != T_NEGOTIATE)) { 59 int i = 1; 60 struct opthdr *opt; 61 62 t_optreq.flags = T_NEGOTIATE; 63 t_optreq.opt.maxlen = MAXOPTSIZE; 64 t_optreq.opt.buf = malloc(MAXOPTSIZE); 65 if (t_optreq.opt.buf == NULL) { 66 (void) mutex_unlock(&td_opt_lock); 67 t_errno = TSYSERR; 68 return (-1); 69 } 70 /* LINTED pointer cast */ 71 opt = (struct opthdr *)(t_optreq.opt.buf); 72 opt->name = TCP_NODELAY; 73 opt->len = 4; 74 opt->level = IPPROTO_TCP; 75 (void) memcpy((caddr_t)(t_optreq.opt.buf + 76 sizeof (struct opthdr)), &i, sizeof (int)); 77 t_optreq.opt.len = (int)(sizeof (struct opthdr) + 78 sizeof (int)); 79 80 t_optret.opt.maxlen = MAXOPTSIZE; 81 t_optret.opt.len = 0; 82 t_optret.opt.buf = malloc(MAXOPTSIZE); 83 if (t_optret.opt.buf == NULL) { 84 (void) mutex_unlock(&td_opt_lock); 85 free(t_optreq.opt.buf); 86 t_errno = TSYSERR; 87 return (-1); 88 } 89 } 90 91 if (state == T_IDLE) 92 rval = t_optmgmt(fd, &t_optreq, &t_optret); 93 94 (void) mutex_unlock(&td_opt_lock); 95 return (rval); 96 } 97