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 const char *get_devstr(void)
  61 {
  62     if (g_str_equal(qtest_get_arch(), "s390x")) {
  63         return "virtio-net-ccw";
  64     }
  65
  66     return "rtl8139";
  67 }
  68
  69
  70 static void test_redirector_tx(void)
  71 {
  72     int backend_sock[2], recv_sock;
  73     char *cmdline;
  74     uint32_t ret = 0, len = 0;
  75     char send_buf[] = "Hello!!";
  76     char sock_path0[] = "filter-redirector0.XXXXXX";
  77     char sock_path1[] = "filter-redirector1.XXXXXX";
  78     char *recv_buf;
  79     uint32_t size = sizeof(send_buf);
  80     size = htonl(size);
  81
  82     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
  83     g_assert_cmpint(ret, !=, -1);
  84
  85     ret = mkstemp(sock_path0);
  86     g_assert_cmpint(ret, !=, -1);
  87     ret = mkstemp(sock_path1);
  88     g_assert_cmpint(ret, !=, -1);
  89
  90     cmdline = g_strdup_printf("-netdev socket,id=qtest-bn0,fd=%d "
  91                 "-device %s,netdev=qtest-bn0,id=qtest-e0 "
  92                 "-chardev socket,id=redirector0,path=%s,server,nowait "
  93                 "-chardev socket,id=redirector1,path=%s,server,nowait "
  94                 "-chardev socket,id=redirector2,path=%s,nowait "
  95                 "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
  96                 "queue=tx,outdev=redirector0 "
  97                 "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
  98                 "queue=tx,indev=redirector2 "
  99                 "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
 100                 "queue=tx,outdev=redirector1 ", backend_sock[1], get_devstr(),
 101                 sock_path0, sock_path1, sock_path0);
 102     qtest_start(cmdline);
 103     g_free(cmdline);
 104
 105     recv_sock = unix_connect(sock_path1, NULL);
 106     g_assert_cmpint(recv_sock, !=, -1);
 107
 108     /* send a qmp command to guarantee that 'connected' is setting to true. */
 109     qmp_discard_response("{ 'execute' : 'query-status'}");
 110
 111     struct iovec iov[] = {
 112         {
 113             .iov_base = &size,
 114             .iov_len = sizeof(size),
 115         }, {
 116             .iov_base = send_buf,
 117             .iov_len = sizeof(send_buf),
 118         },
 119     };
 120
 121     ret = iov_send(backend_sock[0], iov, 2, 0, sizeof(size) + sizeof(send_buf));
 122     g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
 123     close(backend_sock[0]);
 124
 125     ret = qemu_recv(recv_sock, &len, sizeof(len), 0);
 126     g_assert_cmpint(ret, ==, sizeof(len));
 127     len = ntohl(len);
 128
 129     g_assert_cmpint(len, ==, sizeof(send_buf));
 130     recv_buf = g_malloc(len);
 131     ret = qemu_recv(recv_sock, recv_buf, len, 0);
 132     g_assert_cmpstr(recv_buf, ==, send_buf);
 133
 134     g_free(recv_buf);
 135     close(recv_sock);
 136     unlink(sock_path0);
 137     unlink(sock_path1);
 138     qtest_end();
 139 }
 140
 141 static void test_redirector_rx(void)
 142 {
 143     int backend_sock[2], send_sock;
 144     char *cmdline;
 145     uint32_t ret = 0, len = 0;
 146     char send_buf[] = "Hello!!";
 147     char sock_path0[] = "filter-redirector0.XXXXXX";
 148     char sock_path1[] = "filter-redirector1.XXXXXX";
 149     char *recv_buf;
 150     uint32_t size = sizeof(send_buf);
 151     size = htonl(size);
 152
 153     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
 154     g_assert_cmpint(ret, !=, -1);
 155
 156     ret = mkstemp(sock_path0);
 157     g_assert_cmpint(ret, !=, -1);
 158     ret = mkstemp(sock_path1);
 159     g_assert_cmpint(ret, !=, -1);
 160
 161     cmdline = g_strdup_printf("-netdev socket,id=qtest-bn0,fd=%d "
 162                 "-device %s,netdev=qtest-bn0,id=qtest-e0 "
 163                 "-chardev socket,id=redirector0,path=%s,server,nowait "
 164                 "-chardev socket,id=redirector1,path=%s,server,nowait "
 165                 "-chardev socket,id=redirector2,path=%s,nowait "
 166                 "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
 167                 "queue=rx,indev=redirector0 "
 168                 "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
 169                 "queue=rx,outdev=redirector2 "
 170                 "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
 171                 "queue=rx,indev=redirector1 ", backend_sock[1], get_devstr(),
 172                 sock_path0, sock_path1, sock_path0);
 173     qtest_start(cmdline);
 174     g_free(cmdline);
 175
 176     struct iovec iov[] = {
 177         {
 178             .iov_base = &size,
 179             .iov_len = sizeof(size),
 180         }, {
 181             .iov_base = send_buf,
 182             .iov_len = sizeof(send_buf),
 183         },
 184     };
 185
 186     send_sock = unix_connect(sock_path1, NULL);
 187     g_assert_cmpint(send_sock, !=, -1);
 188     /* send a qmp command to guarantee that 'connected' is setting to true. */
 189     qmp_discard_response("{ 'execute' : 'query-status'}");
 190
 191     ret = iov_send(send_sock, iov, 2, 0, sizeof(size) + sizeof(send_buf));
 192     g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
 193     close(send_sock);
 194
 195     ret = qemu_recv(backend_sock[0], &len, sizeof(len), 0);
 196     g_assert_cmpint(ret, ==, sizeof(len));
 197     len = ntohl(len);
 198
 199     g_assert_cmpint(len, ==, sizeof(send_buf));
 200     recv_buf = g_malloc(len);
 201     ret = qemu_recv(backend_sock[0], recv_buf, len, 0);
 202     g_assert_cmpstr(recv_buf, ==, send_buf);
 203
 204     g_free(recv_buf);
 205     unlink(sock_path0);
 206     unlink(sock_path1);
 207     qtest_end();
 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 }