1/*	$NetBSD: t_recvmmsg.c,v 1.1 2012/06/22 18:45:23 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2012 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jared McNeill and Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38#include <sys/cdefs.h>
39__RCSID("$NetBSD: t_recvmmsg.c,v 1.1 2012/06/22 18:45:23 christos Exp $");
40
41#include <atf-c.h>
42#include <sys/types.h>
43#include <sys/socket.h>
44#include <sys/wait.h>
45
46#include <string.h>
47#include <time.h>
48#include <stdint.h>
49#include <errno.h>
50#include <stdio.h>
51#include <stdlib.h>
52#include <unistd.h>
53#include <sched.h>
54
55#define BUFSIZE	65536
56#define NPKTS	50
57
58#define min(a, b) ((a) < (b) ? (a) : (b))
59static int debug;
60
61
62ATF_TC(recvmmsg_basic);
63ATF_TC_HEAD(recvmmsg_basic, tc)
64{
65	atf_tc_set_md_var(tc, "descr", "A basic test of recvmmsg(2)");
66}
67
68ATF_TC_BODY(recvmmsg_basic, tc)
69{
70	int fd[2], error, i, cnt;
71	uint8_t *buf;
72	struct mmsghdr *mmsghdr;
73	struct iovec *iov;
74	unsigned int mmsgcnt, n;
75	int status;
76	off_t off;
77	uint8_t DGRAM[1316] = { 0, 2, 3, 4, 5, 6, 7, 8, 9, };
78
79	error = socketpair(AF_UNIX, SOCK_DGRAM, 0, fd);
80	ATF_REQUIRE_MSG(error != -1, "socketpair failed (%s)", strerror(errno));
81
82	buf = malloc(BUFSIZE);
83	ATF_REQUIRE_MSG(buf != NULL, "malloc failed (%s)", strerror(errno));
84
85	mmsgcnt = BUFSIZE / sizeof(DGRAM);
86	mmsghdr = malloc(sizeof(*mmsghdr) * mmsgcnt);
87	ATF_REQUIRE_MSG(mmsghdr != NULL, "malloc failed (%s)", strerror(errno));
88	iov = malloc(sizeof(*iov) * mmsgcnt);
89	ATF_REQUIRE_MSG(iov != NULL, "malloc failed (%s)", strerror(errno));
90
91	for (off = 0, n = 0; n < mmsgcnt; n++) {
92		iov[n].iov_base = buf + off;
93		iov[n].iov_len = sizeof(DGRAM);
94		off += iov[n].iov_len;
95		mmsghdr[n].msg_hdr.msg_iov = &iov[n];
96		mmsghdr[n].msg_hdr.msg_iovlen = 1;
97		mmsghdr[n].msg_hdr.msg_name = NULL;
98		mmsghdr[n].msg_hdr.msg_namelen = 0;
99	}
100
101	switch (fork()) {
102	case -1:
103		ATF_REQUIRE_MSG(0, "fork failed (%s)", strerror(errno));
104		break;
105
106	case 0:
107		n = NPKTS;
108		if (debug)
109		    printf("waiting for %u messages (max %u per syscall)\n", n,
110			mmsgcnt);
111		while (n > 0) {
112			struct timespec ts = { 1, 0 };
113			cnt = recvmmsg(fd[1], mmsghdr, min(mmsgcnt, n),
114			    MSG_WAITALL, &ts);
115			ATF_REQUIRE_MSG(cnt != -1, "recvmmsg failed (%s)",
116			    strerror(errno));
117			ATF_REQUIRE_MSG(cnt != 0, "recvmmsg timeout");
118			if (debug)
119				printf("recvmmsg: got %u messages\n", cnt);
120			for (i = 0; i < cnt; i++) {
121				ATF_CHECK_EQ_MSG(mmsghdr[i].msg_len,
122				    sizeof(DGRAM), "packet length");
123				ATF_CHECK_EQ_MSG(
124				    ((uint8_t *)iov[i].iov_base)[0],
125				    NPKTS - n + i, "packet contents");
126			}
127			n -= cnt;
128		}
129		if (debug)
130			printf("done!\n");
131		exit(0);
132		/*NOTREACHED*/
133	default:
134		sched_yield();
135
136		for (n = 0; n < NPKTS; n++) {
137			if (debug)
138				printf("sending packet %u/%u...\n", (n+1),
139				    NPKTS);
140			do {
141				DGRAM[0] = n;
142				error = send(fd[0], DGRAM, sizeof(DGRAM), 0);
143			} while (error == -1 && errno == ENOBUFS);
144			if (error == -1)
145				ATF_REQUIRE_MSG(error != -1, "send failed (%s)",
146				    strerror(errno));
147		}
148		error = wait(&status);
149		ATF_REQUIRE_MSG(error != -1, "wait failed (%s)",
150		    strerror(errno));
151		break;
152	}
153}
154
155ATF_TP_ADD_TCS(tp)
156{
157
158	ATF_TP_ADD_TC(tp, recvmmsg_basic);
159
160	return atf_no_error();
161}
162