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 "qapi/qmp/qdict.h"
  56 #include "qemu/iov.h"
  57 #include "qemu/sockets.h"
  58 #include "qemu/error-report.h"
  59 #include "qemu/main-loop.h"
  60
  61 /* TODO actually test the results and get rid of this */
  62 #define qmp_discard_response(...) qobject_unref(qmp(__VA_ARGS__))
  63
  64 static const char *get_devstr(void)
  65 {
  66     if (g_str_equal(qtest_get_arch(), "s390x")) {
  67         return "virtio-net-ccw";
  68     }
  69
  70     return "rtl8139";
  71 }
  72
  73
  74 static void test_redirector_tx(void)
  75 {
  76     int backend_sock[2], recv_sock;
  77     uint32_t ret = 0, len = 0;
  78     char send_buf[] = "Hello!!";
  79     char sock_path0[] = "filter-redirector0.XXXXXX";
  80     char sock_path1[] = "filter-redirector1.XXXXXX";
  81     char *recv_buf;
  82     uint32_t size = sizeof(send_buf);
  83     size = htonl(size);
  84
  85     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
  86     g_assert_cmpint(ret, !=, -1);
  87
  88     ret = mkstemp(sock_path0);
  89     g_assert_cmpint(ret, !=, -1);
  90     ret = mkstemp(sock_path1);
  91     g_assert_cmpint(ret, !=, -1);
  92
  93     global_qtest = qtest_initf(
  94         "-netdev socket,id=qtest-bn0,fd=%d "
  95         "-device %s,netdev=qtest-bn0,id=qtest-e0 "
  96         "-chardev socket,id=redirector0,path=%s,server,nowait "
  97         "-chardev socket,id=redirector1,path=%s,server,nowait "
  98         "-chardev socket,id=redirector2,path=%s,nowait "
  99         "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
 100         "queue=tx,outdev=redirector0 "
 101         "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
 102         "queue=tx,indev=redirector2 "
 103         "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
 104         "queue=tx,outdev=redirector1 ", backend_sock[1], get_devstr(),
 105         sock_path0, sock_path1, sock_path0);
 106
 107     recv_sock = unix_connect(sock_path1, NULL);
 108     g_assert_cmpint(recv_sock, !=, -1);
 109
 110     /* send a qmp command to guarantee that 'connected' is setting to true. */
 111     qmp_discard_response("{ 'execute' : 'query-status'}");
 112
 113     struct iovec iov[] = {
 114         {
 115             .iov_base = &size,
 116             .iov_len = sizeof(size),
 117         }, {
 118             .iov_base = send_buf,
 119             .iov_len = sizeof(send_buf),
 120         },
 121     };
 122
 123     ret = iov_send(backend_sock[0], iov, 2, 0, sizeof(size) + sizeof(send_buf));
 124     g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
 125     close(backend_sock[0]);
 126
 127     ret = qemu_recv(recv_sock, &len, sizeof(len), 0);
 128     g_assert_cmpint(ret, ==, sizeof(len));
 129     len = ntohl(len);
 130
 131     g_assert_cmpint(len, ==, sizeof(send_buf));
 132     recv_buf = g_malloc(len);
 133     ret = qemu_recv(recv_sock, recv_buf, len, 0);
 134     g_assert_cmpstr(recv_buf, ==, send_buf);
 135
 136     g_free(recv_buf);
 137     close(recv_sock);
 138     unlink(sock_path0);
 139     unlink(sock_path1);
 140     qtest_end();
 141 }
 142
 143 static void test_redirector_rx(void)
 144 {
 145     int backend_sock[2], send_sock;
 146     uint32_t ret = 0, len = 0;
 147     char send_buf[] = "Hello!!";
 148     char sock_path0[] = "filter-redirector0.XXXXXX";
 149     char sock_path1[] = "filter-redirector1.XXXXXX";
 150     char *recv_buf;
 151     uint32_t size = sizeof(send_buf);
 152     size = htonl(size);
 153
 154     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
 155     g_assert_cmpint(ret, !=, -1);
 156
 157     ret = mkstemp(sock_path0);
 158     g_assert_cmpint(ret, !=, -1);
 159     ret = mkstemp(sock_path1);
 160     g_assert_cmpint(ret, !=, -1);
 161
 162     global_qtest = qtest_initf(
 163         "-netdev socket,id=qtest-bn0,fd=%d "
 164         "-device %s,netdev=qtest-bn0,id=qtest-e0 "
 165         "-chardev socket,id=redirector0,path=%s,server,nowait "
 166         "-chardev socket,id=redirector1,path=%s,server,nowait "
 167         "-chardev socket,id=redirector2,path=%s,nowait "
 168         "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
 169         "queue=rx,indev=redirector0 "
 170         "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
 171         "queue=rx,outdev=redirector2 "
 172         "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
 173         "queue=rx,indev=redirector1 ", backend_sock[1], get_devstr(),
 174         sock_path0, sock_path1, sock_path0);
 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
 194     ret = qemu_recv(backend_sock[0], &len, sizeof(len), 0);
 195     g_assert_cmpint(ret, ==, sizeof(len));
 196     len = ntohl(len);
 197
 198     g_assert_cmpint(len, ==, sizeof(send_buf));
 199     recv_buf = g_malloc(len);
 200     ret = qemu_recv(backend_sock[0], recv_buf, len, 0);
 201     g_assert_cmpstr(recv_buf, ==, send_buf);
 202
 203     close(send_sock);
 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 }