kernel - Reduce lwp_signotify() latency
[dragonfly.git] / usr.sbin / ypserv / yp_svc_udp.c
CommitLineData
984263bc
MD
1/*
2 * Copyright (c) 1996
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
1de703da 31 *
ce0e08e2 32 * $FreeBSD: src/usr.sbin/ypserv/yp_svc_udp.c,v 1.8 2003/05/03 21:06:42 obrien Exp $
7bb1f61f 33 * $DragonFly: src/usr.sbin/ypserv/yp_svc_udp.c,v 1.3 2004/03/31 23:20:22 cpressey Exp $
984263bc
MD
34 */
35
984263bc 36#include <rpc/rpc.h>
ce0e08e2 37#include <rpc/svc_dg.h>
984263bc
MD
38#include "yp_extern.h"
39
ce0e08e2 40#define su_data(xprt) ((struct svc_dg_data *)(xprt->xp_p2))
984263bc
MD
41
42/*
43 * We need to be able to manually set the transaction ID in the
44 * UDP transport handle, but the standard library offers us no way
45 * to do that. Hence we need this garbage.
46 */
47
48unsigned long
7bb1f61f 49svcudp_get_xid(SVCXPRT *xprt)
984263bc 50{
ce0e08e2 51 struct svc_dg_data *su;
984263bc
MD
52
53 if (xprt == NULL)
54 return(0);
55 su = su_data(xprt);
56 return(su->su_xid);
57}
58
59unsigned long
7bb1f61f 60svcudp_set_xid(SVCXPRT *xprt, unsigned long xid)
984263bc 61{
ce0e08e2 62 struct svc_dg_data *su;
984263bc
MD
63 unsigned long old_xid;
64
65 if (xprt == NULL)
66 return(0);
67 su = su_data(xprt);
68 old_xid = su->su_xid;
69 su->su_xid = xid;
70 return(old_xid);
71}