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