[Qemu-devel] [PATCH V2 3/3] tests/test-filter-redirector: Add unit test for filter-redirector

[Zhang Chen <zhangchen.fnst@cn.fujitsu.com>]

In this unit test,we will test the filter redirector function.

Start qemu with:

        "-netdev tap,id=qtest-bn0 "
        "-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
        "-chardev socket,id=redirector0,path=%s,server,nowait "
        "-chardev socket,id=redirector1,path=%s,server,nowait "
        "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
        "queue=tx,indev=redirector1 "
        "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
        "queue=tx,outdev=redirector0 "

We inject packet to -chardev redirector1,then filter-redirector
will pass it to filter, another filter-redirector get it and
redirect it to redirector0,we read packet from redirector0
and compare to what we inject.

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
---
 tests/.gitignore               |  1 +
 tests/Makefile                 |  2 +
 tests/test-filter-redirector.c | 97 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 100 insertions(+)
 create mode 100644 tests/test-filter-redirector.c

diff --git a/tests/.gitignore b/tests/.gitignore
index 10df017..5069d5d 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -64,5 +64,6 @@ test-x86-cpuid
 test-xbzrle
 test-netfilter
 test-filter-mirror
+test-filter-redirector
 *-test
 qapi-schema/*.test.*
diff --git a/tests/Makefile b/tests/Makefile
index e56c514..275c4cc 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -213,6 +213,7 @@ check-qtest-x86_64-$(CONFIG_VHOST_NET_TEST_x86_64) += tests/vhost-user-test$(EXE
 endif
 check-qtest-i386-y += tests/test-netfilter$(EXESUF)
 check-qtest-i386-y += tests/test-filter-mirror$(EXESUF)
+check-qtest-i386-y += tests/test-filter-redirector$(EXESUF)
 check-qtest-x86_64-y = $(check-qtest-i386-y)
 gcov-files-i386-y += i386-softmmu/hw/timer/mc146818rtc.c
 gcov-files-x86_64-y = $(subst i386-softmmu/,x86_64-softmmu/,$(gcov-files-i386-y))
@@ -565,6 +566,7 @@ tests/test-qemu-opts$(EXESUF): tests/test-qemu-opts.o $(test-util-obj-y)
 tests/test-write-threshold$(EXESUF): tests/test-write-threshold.o $(test-block-obj-y)
 tests/test-netfilter$(EXESUF): tests/test-netfilter.o $(qtest-obj-y)
 tests/test-filter-mirror$(EXESUF): tests/test-filter-mirror.o $(qtest-obj-y)
+tests/test-filter-redirector$(EXESUF): tests/test-filter-redirector.o $(qtest-obj-y)
 tests/ivshmem-test$(EXESUF): tests/ivshmem-test.o contrib/ivshmem-server/ivshmem-server.o $(libqos-pc-obj-y)
 tests/vhost-user-bridge$(EXESUF): tests/vhost-user-bridge.o
 
diff --git a/tests/test-filter-redirector.c b/tests/test-filter-redirector.c
new file mode 100644
index 0000000..156f41b
--- /dev/null
+++ b/tests/test-filter-redirector.c
@@ -0,0 +1,97 @@
+/*
+ * QTest testcase for filter-redirector
+ *
+ * Copyright (c) 2016 FUJITSU LIMITED
+ * Author: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later.  See the COPYING file in the top-level directory.
+ */
+
+#include <glib.h>
+#include "libqtest.h"
+#include "qemu/iov.h"
+#include "qemu/sockets.h"
+#include "qemu/error-report.h"
+#include "qemu/main-loop.h"
+
+static void test_redirector(void)
+{
+#ifndef _WIN32
+/* socketpair(PF_UNIX) which does not exist on windows */
+
+    int send_sock, recv_sock;
+    char *cmdline;
+    uint32_t ret = 0, len = 0;
+    char send_buf[] = "Hello! filter-redirector~";
+    char sock_path0[] = "filter-redirector0.XXXXXX";
+    char sock_path1[] = "filter-redirector1.XXXXXX";
+    char *recv_buf;
+    uint32_t size = sizeof(send_buf);
+    size = htonl(size);
+
+    ret = mkstemp(sock_path0);
+    g_assert_cmpint(ret, !=, -1);
+    ret = mkstemp(sock_path1);
+    g_assert_cmpint(ret, !=, -1);
+
+    cmdline = g_strdup_printf("-netdev tap,id=qtest-bn0 "
+                "-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
+                "-chardev socket,id=redirector0,path=%s,server,nowait "
+                "-chardev socket,id=redirector1,path=%s,server,nowait "
+                "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
+                "queue=tx,indev=redirector1 "
+                "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
+                "queue=tx,outdev=redirector0 "
+                , sock_path0, sock_path1);
+    qtest_start(cmdline);
+    g_free(cmdline);
+
+    recv_sock = unix_connect(sock_path0, NULL);
+    g_assert_cmpint(recv_sock, !=, -1);
+
+    struct iovec iov[] = {
+        {
+            .iov_base = &size,
+            .iov_len = sizeof(size),
+        }, {
+            .iov_base = send_buf,
+            .iov_len = sizeof(send_buf),
+        },
+    };
+
+    send_sock = unix_connect(sock_path1, NULL);
+    g_assert_cmpint(send_sock, !=, -1);
+
+    ret = iov_send(send_sock, iov, 2, 0, sizeof(size) + sizeof(send_buf));
+    g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
+    close(send_sock);
+
+    ret = qemu_recv(recv_sock, &len, sizeof(len), 0);
+    g_assert_cmpint(ret, ==, sizeof(len));
+    len = ntohl(len);
+
+    g_assert_cmpint(len, ==, sizeof(send_buf));
+    recv_buf = g_malloc(len);
+    ret = qemu_recv(recv_sock, recv_buf, len, 0);
+    g_assert_cmpstr(recv_buf, ==, send_buf);
+
+    g_free(recv_buf);
+    close(recv_sock);
+    unlink(sock_path0);
+    unlink(sock_path1);
+
+#endif
+}
+
+int main(int argc, char **argv)
+{
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+    qtest_add_func("/netfilter/redirector", test_redirector);
+    ret = g_test_run();
+    qtest_end();
+
+    return ret;
+}
-- 
1.9.1