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