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 #include "mt.h"
29 #include "rpc_mt.h"
30 #include <stdio.h>
31 #include <rpc/rpc.h>
32 #include <errno.h>
33 #include <tiuser.h>
34 #include <string.h>
35 #include <stropts.h>
36 #include <netinet/tcp.h>
37 #include <stdlib.h>
38
39 #define MAXOPTSIZE 64
40
41 int
__td_setnodelay(int fd)42 __td_setnodelay(int fd)
43 {
44 int rval = 0;
45 static mutex_t td_opt_lock = DEFAULTMUTEX;
46 static struct t_optmgmt t_optreq, t_optret;
47 int state;
48
49
50 /* VARIABLES PROTECTED BY td_opt_lock: t_optreq, t_optret */
51
52 if ((state = t_getstate(fd)) == -1)
53 return (-1);
54
55 (void) mutex_lock(&td_opt_lock);
56 if ((state == T_IDLE) && (t_optreq.flags != T_NEGOTIATE)) {
57 int i = 1;
58 struct opthdr *opt;
59
60 t_optreq.flags = T_NEGOTIATE;
61 t_optreq.opt.maxlen = MAXOPTSIZE;
62 t_optreq.opt.buf = malloc(MAXOPTSIZE);
63 if (t_optreq.opt.buf == NULL) {
64 (void) mutex_unlock(&td_opt_lock);
65 t_errno = TSYSERR;
66 return (-1);
67 }
68 /* LINTED pointer cast */
69 opt = (struct opthdr *)(t_optreq.opt.buf);
70 opt->name = TCP_NODELAY;
71 opt->len = 4;
72 opt->level = IPPROTO_TCP;
73 (void) memcpy((caddr_t)(t_optreq.opt.buf +
74 sizeof (struct opthdr)), &i, sizeof (int));
75 t_optreq.opt.len = (int)(sizeof (struct opthdr) +
76 sizeof (int));
77
78 t_optret.opt.maxlen = MAXOPTSIZE;
79 t_optret.opt.len = 0;
80 t_optret.opt.buf = malloc(MAXOPTSIZE);
81 if (t_optret.opt.buf == NULL) {
82 (void) mutex_unlock(&td_opt_lock);
83 free(t_optreq.opt.buf);
84 t_errno = TSYSERR;
85 return (-1);
86 }
87 }
88
89 if (state == T_IDLE)
90 rval = t_optmgmt(fd, &t_optreq, &t_optret);
91
92 (void) mutex_unlock(&td_opt_lock);
93 return (rval);
94 }
95