tests/test-filter-redirector.c

   1 /*
   2  * QTest testcase for filter-redirector
   3  *
   4  * Copyright (c) 2016 FUJITSU LIMITED
   5  * Author: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
   6  *
   7  * This work is licensed under the terms of the GNU GPL, version 2 or
   8  * later.  See the COPYING file in the top-level directory.
   9  *
  10  * Case 1, tx traffic flow:
  11  *
  12  * qemu side              | test side
  13  *                        |
  14  * +---------+            |  +-------+
  15  * | backend <---------------+ sock0 |
  16  * +----+----+            |  +-------+
  17  *      |                 |
  18  * +----v----+  +-------+ |
  19  * |  rd0    +->+chardev| |
  20  * +---------+  +---+---+ |
  21  *                  |     |
  22  * +---------+      |     |
  23  * |  rd1    <------+     |
  24  * +----+----+            |
  25  *      |                 |
  26  * +----v----+            |  +-------+
  27  * |  rd2    +--------------->sock1  |
  28  * +---------+            |  +-------+
  29  *                        +
  30  *
  31  * --------------------------------------
  32  * Case 2, rx traffic flow
  33  * qemu side              | test side
  34  *                        |
  35  * +---------+            |  +-------+
  36  * | backend +---------------> sock1 |
  37  * +----^----+            |  +-------+
  38  *      |                 |
  39  * +----+----+  +-------+ |
  40  * |  rd0    +<-+chardev| |
  41  * +---------+  +---+---+ |
  42  *                  ^     |
  43  * +---------+      |     |
  44  * |  rd1    +------+     |
  45  * +----^----+            |
  46  *      |                 |
  47  * +----+----+            |  +-------+
  48  * |  rd2    <---------------+sock0  |
  49  * +---------+            |  +-------+
  50  *                        +
  51  */
  52
  53 #include "qemu/osdep.h"
  54 #include "libqtest.h"
  55 #include "qemu/iov.h"
  56 #include "qemu/sockets.h"
  57 #include "qemu/error-report.h"
  58 #include "qemu/main-loop.h"
  59
  60 static void test_redirector_tx(void)
  61 {
  62 #ifndef _WIN32
  63 /* socketpair(PF_UNIX) which does not exist on windows */
  64
  65     int backend_sock[2], recv_sock;
  66     char *cmdline;
  67     uint32_t ret = 0, len = 0;
  68     char send_buf[] = "Hello!!";
  69     char sock_path0[] = "filter-redirector0.XXXXXX";
  70     char sock_path1[] = "filter-redirector1.XXXXXX";
  71     char *recv_buf;
  72     uint32_t size = sizeof(send_buf);
  73     size = htonl(size);
  74
  75     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
  76     g_assert_cmpint(ret, !=, -1);
  77
  78     ret = mkstemp(sock_path0);
  79     g_assert_cmpint(ret, !=, -1);
  80     ret = mkstemp(sock_path1);
  81     g_assert_cmpint(ret, !=, -1);
  82
  83     cmdline = g_strdup_printf("-netdev socket,id=qtest-bn0,fd=%d "
  84                 "-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
  85                 "-chardev socket,id=redirector0,path=%s,server,nowait "
  86                 "-chardev socket,id=redirector1,path=%s,server,nowait "
  87                 "-chardev socket,id=redirector2,path=%s,nowait "
  88                 "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
  89                 "queue=tx,outdev=redirector0 "
  90                 "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
  91                 "queue=tx,indev=redirector2 "
  92                 "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
  93                 "queue=tx,outdev=redirector1 "
  94                 , backend_sock[1], sock_path0, sock_path1, sock_path0);
  95     qtest_start(cmdline);
  96     g_free(cmdline);
  97
  98     recv_sock = unix_connect(sock_path1, NULL);
  99     g_assert_cmpint(recv_sock, !=, -1);
 100
 101     /* send a qmp command to guarantee that 'connected' is setting to true. */
 102     qmp_discard_response("{ 'execute' : 'query-status'}");
 103
 104     struct iovec iov[] = {
 105         {
 106             .iov_base = &size,
 107             .iov_len = sizeof(size),
 108         }, {
 109             .iov_base = send_buf,
 110             .iov_len = sizeof(send_buf),
 111         },
 112     };
 113
 114     ret = iov_send(backend_sock[0], iov, 2, 0, sizeof(size) + sizeof(send_buf));
 115     g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
 116     close(backend_sock[0]);
 117
 118     ret = qemu_recv(recv_sock, &len, sizeof(len), 0);
 119     g_assert_cmpint(ret, ==, sizeof(len));
 120     len = ntohl(len);
 121
 122     g_assert_cmpint(len, ==, sizeof(send_buf));
 123     recv_buf = g_malloc(len);
 124     ret = qemu_recv(recv_sock, recv_buf, len, 0);
 125     g_assert_cmpstr(recv_buf, ==, send_buf);
 126
 127     g_free(recv_buf);
 128     close(recv_sock);
 129     unlink(sock_path0);
 130     unlink(sock_path1);
 131     qtest_end();
 132
 133 #endif
 134 }
 135
 136 static void test_redirector_rx(void)
 137 {
 138 #ifndef _WIN32
 139 /* socketpair(PF_UNIX) which does not exist on windows */
 140
 141     int backend_sock[2], send_sock;
 142     char *cmdline;
 143     uint32_t ret = 0, len = 0;
 144     char send_buf[] = "Hello!!";
 145     char sock_path0[] = "filter-redirector0.XXXXXX";
 146     char sock_path1[] = "filter-redirector1.XXXXXX";
 147     char *recv_buf;
 148     uint32_t size = sizeof(send_buf);
 149     size = htonl(size);
 150
 151     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
 152     g_assert_cmpint(ret, !=, -1);
 153
 154     ret = mkstemp(sock_path0);
 155     g_assert_cmpint(ret, !=, -1);
 156     ret = mkstemp(sock_path1);
 157     g_assert_cmpint(ret, !=, -1);
 158
 159     cmdline = g_strdup_printf("-netdev socket,id=qtest-bn0,fd=%d "
 160                 "-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
 161                 "-chardev socket,id=redirector0,path=%s,server,nowait "
 162                 "-chardev socket,id=redirector1,path=%s,server,nowait "
 163                 "-chardev socket,id=redirector2,path=%s,nowait "
 164                 "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
 165                 "queue=rx,indev=redirector0 "
 166                 "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
 167                 "queue=rx,outdev=redirector2 "
 168                 "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
 169                 "queue=rx,indev=redirector1 "
 170                 , backend_sock[1], sock_path0, sock_path1, sock_path0);
 171     qtest_start(cmdline);
 172     g_free(cmdline);
 173
 174     struct iovec iov[] = {
 175         {
 176             .iov_base = &size,
 177             .iov_len = sizeof(size),
 178         }, {
 179             .iov_base = send_buf,
 180             .iov_len = sizeof(send_buf),
 181         },
 182     };
 183
 184     send_sock = unix_connect(sock_path1, NULL);
 185     g_assert_cmpint(send_sock, !=, -1);
 186     /* send a qmp command to guarantee that 'connected' is setting to true. */
 187     qmp_discard_response("{ 'execute' : 'query-status'}");
 188
 189     ret = iov_send(send_sock, iov, 2, 0, sizeof(size) + sizeof(send_buf));
 190     g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
 191     close(send_sock);
 192
 193     ret = qemu_recv(backend_sock[0], &len, sizeof(len), 0);
 194     g_assert_cmpint(ret, ==, sizeof(len));
 195     len = ntohl(len);
 196
 197     g_assert_cmpint(len, ==, sizeof(send_buf));
 198     recv_buf = g_malloc(len);
 199     ret = qemu_recv(backend_sock[0], recv_buf, len, 0);
 200     g_assert_cmpstr(recv_buf, ==, send_buf);
 201
 202     g_free(recv_buf);
 203     unlink(sock_path0);
 204     unlink(sock_path1);
 205     qtest_end();
 206
 207 #endif
 208 }
 209
 210 int main(int argc, char **argv)
 211 {
 212     g_test_init(&argc, &argv, NULL);
 213     qtest_add_func("/netfilter/redirector_tx", test_redirector_tx);
 214     qtest_add_func("/netfilter/redirector_rx", test_redirector_rx);
 215     return g_test_run();
 216 }