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))
59 static int debug;
60
61
62 ATF_TC(recvmmsg_basic);
ATF_TC_HEAD(recvmmsg_basic,tc)63 ATF_TC_HEAD(recvmmsg_basic, tc)
64 {
65 atf_tc_set_md_var(tc, "descr", "A basic test of recvmmsg(2)");
66 }
67
ATF_TC_BODY(recvmmsg_basic,tc)68 ATF_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
ATF_TP_ADD_TCS(tp)155 ATF_TP_ADD_TCS(tp)
156 {
157
158 ATF_TP_ADD_TC(tp, recvmmsg_basic);
159
160 return atf_no_error();
161 }
162