* [Qemu-devel] [PATCH V6 1/2] net/filter-mirror: implement filter-redirector
2016-03-17 7:32 [Qemu-devel] [PATCH V6 0/2] Introduce filter-redirector Zhang Chen
@ 2016-03-17 7:32 ` Zhang Chen
2016-03-17 7:50 ` Li Zhijian
2016-03-17 7:32 ` [Qemu-devel] [PATCH V6 2/2] tests/test-filter-redirector: Add unit test for filter-redirector Zhang Chen
1 sibling, 1 reply; 5+ messages in thread
From: Zhang Chen @ 2016-03-17 7:32 UTC (permalink / raw)
To: qemu devel, Jason Wang
Cc: Li Zhijian, Gui jianfeng, eddie.dong, zhanghailiang,
Dr. David Alan Gilbert, Zhang Chen, Yang Hongyang
Filter-redirector is a netfilter plugin.
It gives qemu the ability to redirect net packet.
redirector can redirect filter's net packet to outdev.
and redirect indev's packet to filter.
filter
+
redirector |
+--------------+
| | |
indev +-----------+ +----------> outdev
| | |
+--------------+
|
v
filter
usage:
-netdev user,id=hn0
-chardev socket,id=s0,host=ip_primary,port=X,server,nowait
-chardev socket,id=s1,host=ip_primary,port=Y,server,nowait
-filter-redirector,id=r0,netdev=hn0,queue=tx/rx/all,indev=s0,outdev=s1
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
---
net/filter-mirror.c | 244 ++++++++++++++++++++++++++++++++++++++++++++++++++++
qemu-options.hx | 9 ++
vl.c | 3 +-
3 files changed, 255 insertions(+), 1 deletion(-)
diff --git a/net/filter-mirror.c b/net/filter-mirror.c
index 1b1ec16..6335511 100644
--- a/net/filter-mirror.c
+++ b/net/filter-mirror.c
@@ -26,12 +26,23 @@
#define FILTER_MIRROR(obj) \
OBJECT_CHECK(MirrorState, (obj), TYPE_FILTER_MIRROR)
+#define FILTER_REDIRECTOR(obj) \
+ OBJECT_CHECK(MirrorState, (obj), TYPE_FILTER_REDIRECTOR)
+
#define TYPE_FILTER_MIRROR "filter-mirror"
+#define TYPE_FILTER_REDIRECTOR "filter-redirector"
+#define REDIRECTOR_MAX_LEN NET_BUFSIZE
typedef struct MirrorState {
NetFilterState parent_obj;
+ char *indev;
char *outdev;
+ CharDriverState *chr_in;
CharDriverState *chr_out;
+ int state; /* 0 = getting length, 1 = getting data */
+ unsigned int index;
+ unsigned int packet_len;
+ uint8_t buf[REDIRECTOR_MAX_LEN];
} MirrorState;
static int filter_mirror_send(CharDriverState *chr_out,
@@ -68,6 +79,96 @@ err:
return ret < 0 ? ret : -EIO;
}
+static void
+redirector_to_filter(NetFilterState *nf, const uint8_t *buf, int len)
+{
+ struct iovec iov = {
+ .iov_base = (void *)buf,
+ .iov_len = len,
+ };
+
+ if (nf->direction == NET_FILTER_DIRECTION_ALL ||
+ nf->direction == NET_FILTER_DIRECTION_TX) {
+ qemu_netfilter_pass_to_next(nf->netdev, 0, &iov, 1, nf);
+ }
+
+ if (nf->direction == NET_FILTER_DIRECTION_ALL ||
+ nf->direction == NET_FILTER_DIRECTION_RX) {
+ qemu_netfilter_pass_to_next(nf->netdev->peer, 0, &iov, 1, nf);
+ }
+}
+
+static int redirector_chr_can_read(void *opaque)
+{
+ return REDIRECTOR_MAX_LEN;
+}
+
+static void redirector_chr_read(void *opaque, const uint8_t *buf, int size)
+{
+ NetFilterState *nf = opaque;
+ MirrorState *s = FILTER_REDIRECTOR(nf);
+ unsigned int l;
+
+ while (size > 0) {
+ /* reassemble a packet from the network */
+ switch (s->state) { /* 0 = getting length, 1 = getting data */
+ case 0:
+ l = 4 - s->index;
+ if (l > size) {
+ l = size;
+ }
+ memcpy(s->buf + s->index, buf, l);
+ buf += l;
+ size -= l;
+ s->index += l;
+ if (s->index == 4) {
+ /* got length */
+ s->packet_len = ntohl(*(uint32_t *)s->buf);
+ s->index = 0;
+ s->state = 1;
+ }
+ break;
+ case 1:
+ l = s->packet_len - s->index;
+ if (l > size) {
+ l = size;
+ }
+ if (s->index + l <= sizeof(s->buf)) {
+ memcpy(s->buf + s->index, buf, l);
+ } else {
+ error_report("serious error: oversized packet received.");
+ s->index = s->state = 0;
+ qemu_chr_add_handlers(s->chr_in, NULL, NULL, NULL, NULL);
+ return;
+ }
+
+ s->index += l;
+ buf += l;
+ size -= l;
+ if (s->index >= s->packet_len) {
+ s->index = 0;
+ s->state = 0;
+ redirector_to_filter(nf, s->buf, s->packet_len);
+ }
+ break;
+ }
+ }
+}
+
+static void redirector_chr_event(void *opaque, int event)
+{
+ NetFilterState *nf = opaque;
+ MirrorState *s = FILTER_REDIRECTOR(nf);
+
+ switch (event) {
+ case CHR_EVENT_CLOSED:
+ qemu_chr_add_handlers(s->chr_in, NULL, NULL, NULL, NULL);
+ break;
+ default:
+ break;
+ }
+}
+
static ssize_t filter_mirror_receive_iov(NetFilterState *nf,
NetClientState *sender,
unsigned flags,
@@ -90,6 +191,27 @@ static ssize_t filter_mirror_receive_iov(NetFilterState *nf,
return 0;
}
+static ssize_t filter_redirector_receive_iov(NetFilterState *nf,
+ NetClientState *sender,
+ unsigned flags,
+ const struct iovec *iov,
+ int iovcnt,
+ NetPacketSent *sent_cb)
+{
+ MirrorState *s = FILTER_REDIRECTOR(nf);
+ int ret;
+
+ if (s->chr_out) {
+ ret = filter_mirror_send(s->chr_out, iov, iovcnt);
+ if (ret) {
+ error_report("filter_mirror_send failed(%s)", strerror(-ret));
+ }
+ return iov_size(iov, iovcnt);
+ } else {
+ return 0;
+ }
+}
+
static void filter_mirror_cleanup(NetFilterState *nf)
{
MirrorState *s = FILTER_MIRROR(nf);
@@ -99,6 +221,18 @@ static void filter_mirror_cleanup(NetFilterState *nf)
}
}
+static void filter_redirector_cleanup(NetFilterState *nf)
+{
+ MirrorState *s = FILTER_REDIRECTOR(nf);
+
+ if (s->chr_in) {
+ qemu_chr_fe_release(s->chr_in);
+ }
+ if (s->chr_out) {
+ qemu_chr_fe_release(s->chr_out);
+ }
+}
+
static void filter_mirror_setup(NetFilterState *nf, Error **errp)
{
MirrorState *s = FILTER_MIRROR(nf);
@@ -122,6 +256,48 @@ static void filter_mirror_setup(NetFilterState *nf, Error **errp)
}
}
+static void filter_redirector_setup(NetFilterState *nf, Error **errp)
+{
+ MirrorState *s = FILTER_REDIRECTOR(nf);
+
+ if (!s->indev && !s->outdev) {
+ error_setg(errp, "filter redirector needs 'indev' or "
+ "'outdev' at least one property set");
+ return;
+ } else if (s->indev && s->outdev) {
+ if (!strcmp(s->indev, s->outdev)) {
+ error_setg(errp, "'indev' and 'outdev' could not be same "
+ "for filter redirector");
+ return;
+ }
+ }
+
+ s->state = s->index = 0;
+
+ if (s->indev) {
+ s->chr_in = qemu_chr_find(s->indev);
+ if (s->chr_in == NULL) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "IN Device '%s' not found", s->indev);
+ return;
+ }
+
+ qemu_chr_fe_claim_no_fail(s->chr_in);
+ qemu_chr_add_handlers(s->chr_in, redirector_chr_can_read,
+ redirector_chr_read, redirector_chr_event, nf);
+ }
+
+ if (s->outdev) {
+ s->chr_out = qemu_chr_find(s->outdev);
+ if (s->chr_out == NULL) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "OUT Device '%s' not found", s->outdev);
+ return;
+ }
+ qemu_chr_fe_claim_no_fail(s->chr_out);
+ }
+}
+
static void filter_mirror_class_init(ObjectClass *oc, void *data)
{
NetFilterClass *nfc = NETFILTER_CLASS(oc);
@@ -131,6 +307,31 @@ static void filter_mirror_class_init(ObjectClass *oc, void *data)
nfc->receive_iov = filter_mirror_receive_iov;
}
+static void filter_redirector_class_init(ObjectClass *oc, void *data)
+{
+ NetFilterClass *nfc = NETFILTER_CLASS(oc);
+
+ nfc->setup = filter_redirector_setup;
+ nfc->cleanup = filter_redirector_cleanup;
+ nfc->receive_iov = filter_redirector_receive_iov;
+}
+
+static char *filter_redirector_get_indev(Object *obj, Error **errp)
+{
+ MirrorState *s = FILTER_REDIRECTOR(obj);
+
+ return g_strdup(s->indev);
+}
+
+static void
+filter_redirector_set_indev(Object *obj, const char *value, Error **errp)
+{
+ MirrorState *s = FILTER_REDIRECTOR(obj);
+
+ g_free(s->indev);
+ s->indev = g_strdup(value);
+}
+
static char *filter_mirror_get_outdev(Object *obj, Error **errp)
{
MirrorState *s = FILTER_MIRROR(obj);
@@ -152,12 +353,36 @@ filter_mirror_set_outdev(Object *obj, const char *value, Error **errp)
}
}
+static char *filter_redirector_get_outdev(Object *obj, Error **errp)
+{
+ MirrorState *s = FILTER_REDIRECTOR(obj);
+
+ return g_strdup(s->outdev);
+}
+
+static void
+filter_redirector_set_outdev(Object *obj, const char *value, Error **errp)
+{
+ MirrorState *s = FILTER_REDIRECTOR(obj);
+
+ g_free(s->outdev);
+ s->outdev = g_strdup(value);
+}
+
static void filter_mirror_init(Object *obj)
{
object_property_add_str(obj, "outdev", filter_mirror_get_outdev,
filter_mirror_set_outdev, NULL);
}
+static void filter_redirector_init(Object *obj)
+{
+ object_property_add_str(obj, "indev", filter_redirector_get_indev,
+ filter_redirector_set_indev, NULL);
+ object_property_add_str(obj, "outdev", filter_redirector_get_outdev,
+ filter_redirector_set_outdev, NULL);
+}
+
static void filter_mirror_fini(Object *obj)
{
MirrorState *s = FILTER_MIRROR(obj);
@@ -165,6 +390,24 @@ static void filter_mirror_fini(Object *obj)
g_free(s->outdev);
}
+static void filter_redirector_fini(Object *obj)
+{
+ MirrorState *s = FILTER_REDIRECTOR(obj);
+
+ qemu_chr_add_handlers(s->chr_in, NULL, NULL, NULL, NULL);
+ g_free(s->indev);
+ g_free(s->outdev);
+}
+
+static const TypeInfo filter_redirector_info = {
+ .name = TYPE_FILTER_REDIRECTOR,
+ .parent = TYPE_NETFILTER,
+ .class_init = filter_redirector_class_init,
+ .instance_init = filter_redirector_init,
+ .instance_finalize = filter_redirector_fini,
+ .instance_size = sizeof(MirrorState),
+};
+
static const TypeInfo filter_mirror_info = {
.name = TYPE_FILTER_MIRROR,
.parent = TYPE_NETFILTER,
@@ -177,6 +420,7 @@ static const TypeInfo filter_mirror_info = {
static void register_types(void)
{
type_register_static(&filter_mirror_info);
+ type_register_static(&filter_redirector_info);
}
type_init(register_types);
diff --git a/qemu-options.hx b/qemu-options.hx
index 5379cb5..796d053 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3821,6 +3821,15 @@ queue @var{all|rx|tx} is an option that can be applied to any netfilter.
filter-mirror on netdev @var{netdevid},mirror net packet to chardev
@var{chardevid}
+@item -object filter-redirector,id=@var{id},netdev=@var{netdevid},indev=@var{chardevid},
+outdev=@var{chardevid}[,queue=@var{all|rx|tx}]
+
+filter-redirector on netdev @var{netdevid},redirect filter's net packet to chardev
+@var{chardevid},and redirect indev's packet to filter.
+Create a filter-redirector we need to differ outdev id from indev id, id can not
+be the same. we can just use indev or outdev, but at least one of indev or outdev
+need to be specified.
+
@item -object filter-dump,id=@var{id},netdev=@var{dev},file=@var{filename}][,maxlen=@var{len}]
Dump the network traffic on netdev @var{dev} to the file specified by
diff --git a/vl.c b/vl.c
index 79bb11a..dc6e63a 100644
--- a/vl.c
+++ b/vl.c
@@ -2841,7 +2841,8 @@ static bool object_create_initial(const char *type)
*/
if (g_str_equal(type, "filter-buffer") ||
g_str_equal(type, "filter-dump") ||
- g_str_equal(type, "filter-mirror")) {
+ g_str_equal(type, "filter-mirror") ||
+ g_str_equal(type, "filter-redirector")) {
return false;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* [Qemu-devel] [PATCH V6 2/2] tests/test-filter-redirector: Add unit test for filter-redirector
2016-03-17 7:32 [Qemu-devel] [PATCH V6 0/2] Introduce filter-redirector Zhang Chen
2016-03-17 7:32 ` [Qemu-devel] [PATCH V6 1/2] net/filter-mirror: implement filter-redirector Zhang Chen
@ 2016-03-17 7:32 ` Zhang Chen
1 sibling, 0 replies; 5+ messages in thread
From: Zhang Chen @ 2016-03-17 7:32 UTC (permalink / raw)
To: qemu devel, Jason Wang
Cc: Li Zhijian, Gui jianfeng, eddie.dong, zhanghailiang,
Dr. David Alan Gilbert, Zhang Chen, Yang Hongyang
In this unit test,we will test the filter redirector function.
Case 1, tx traffic flow:
qemu side | test side
|
+---------+ | +-------+
| backend <---------------+ sock0 |
+----+----+ | +-------+
| |
+----v----+ +-------+ |
| rd0 +->+chardev| |
+---------+ +---+---+ |
| |
+---------+ | |
| rd1 <------+ |
+----+----+ |
| |
+----v----+ | +-------+
| rd2 +--------------->sock1 |
+---------+ | +-------+
+
a. we(sock0) inject packet to qemu socket backend
b. backend pass packet to filter redirector0(rd0)
c. rd0 redirect packet to out_dev(chardev) which is connected with
filter redirector1's(rd1) in_dev
d. rd1 read this packet from in_dev, and pass to next filter redirector2(rd2)
e. rd2 redirect packet to rd2's out_dev which is connected with an opened socketed(sock1)
f. we read packet from sock1 and compare to what we inject
Start qemu with:
"-netdev socket,id=qtest-bn0,fd=%d "
"-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
"-chardev socket,id=redirector0,path=%s,server,nowait "
"-chardev socket,id=redirector1,path=%s,server,nowait "
"-chardev socket,id=redirector2,path=%s,nowait "
"-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
"queue=tx,outdev=redirector0 "
"-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
"queue=tx,indev=redirector2 "
"-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
"queue=tx,outdev=redirector1 "
--------------------------------------
Case 2, rx traffic flow
qemu side | test side
|
+---------+ | +-------+
| backend +---------------> sock1 |
+----^----+ | +-------+
| |
+----+----+ +-------+ |
| rd0 +<-+chardev| |
+---------+ +---+---+ |
^ |
+---------+ | |
| rd1 +------+ |
+----^----+ |
| |
+----+----+ | +-------+
| rd2 <---------------+sock0 |
+---------+ | +-------+
a. we(sock0) insert packet to filter redirector2(rd2)
b. rd2 pass packet to filter redirector1(rd1)
c. rd1 redirect packet to out_dev(chardev) which is connected with
filter redirector0's(rd0) in_dev
d. rd0 read this packet from in_dev, and pass ti to qemu backend which is
connected with an opened socketed(sock1)
e. we read packet from sock1 and compare to what we inject
Start qemu with:
"-netdev socket,id=qtest-bn0,fd=%d "
"-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
"-chardev socket,id=redirector0,path=%s,server,nowait "
"-chardev socket,id=redirector1,path=%s,server,nowait "
"-chardev socket,id=redirector2,path=%s,nowait "
"-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
"queue=rx,outdev=redirector0 "
"-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
"queue=rx,indev=redirector2 "
"-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
"queue=rx,outdev=redirector1 "
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
---
tests/.gitignore | 1 +
tests/Makefile | 2 +
tests/test-filter-redirector.c | 221 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 224 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 5a8f590..ff212b6 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -214,6 +214,7 @@ 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))
@@ -568,6 +569,7 @@ 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..b93012c
--- /dev/null
+++ b/tests/test-filter-redirector.c
@@ -0,0 +1,221 @@
+/*
+ * 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.
+ *
+ * Case 1, tx traffic flow:
+ *
+ * qemu side | test side
+ * |
+ * +---------+ | +-------+
+ * | backend <---------------+ sock0 |
+ * +----+----+ | +-------+
+ * | |
+ * +----v----+ +-------+ |
+ * | rd0 +->+chardev| |
+ * +---------+ +---+---+ |
+ * | |
+ * +---------+ | |
+ * | rd1 <------+ |
+ * +----+----+ |
+ * | |
+ * +----v----+ | +-------+
+ * | rd2 +--------------->sock1 |
+ * +---------+ | +-------+
+ * +
+ *
+ * --------------------------------------
+ * Case 2, rx traffic flow
+ * qemu side | test side
+ * |
+ * +---------+ | +-------+
+ * | backend +---------------> sock1 |
+ * +----^----+ | +-------+
+ * | |
+ * +----+----+ +-------+ |
+ * | rd0 +<-+chardev| |
+ * +---------+ +---+---+ |
+ * ^ |
+ * +---------+ | |
+ * | rd1 +------+ |
+ * +----^----+ |
+ * | |
+ * +----+----+ | +-------+
+ * | rd2 <---------------+sock0 |
+ * +---------+ | +-------+
+ * +
+ */
+
+#include "qemu/osdep.h"
+#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_tx(void)
+{
+#ifndef _WIN32
+/* socketpair(PF_UNIX) which does not exist on windows */
+
+ int backend_sock[2], recv_sock;
+ char *cmdline;
+ uint32_t ret = 0, len = 0;
+ char send_buf[] = "Hello!!";
+ 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 = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
+ g_assert_cmpint(ret, !=, -1);
+
+ ret = mkstemp(sock_path0);
+ g_assert_cmpint(ret, !=, -1);
+ ret = mkstemp(sock_path1);
+ g_assert_cmpint(ret, !=, -1);
+
+ cmdline = g_strdup_printf("-netdev socket,id=qtest-bn0,fd=%d "
+ "-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
+ "-chardev socket,id=redirector0,path=%s,server,nowait "
+ "-chardev socket,id=redirector1,path=%s,server,nowait "
+ "-chardev socket,id=redirector2,path=%s,nowait "
+ "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
+ "queue=tx,outdev=redirector0 "
+ "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
+ "queue=tx,indev=redirector2 "
+ "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
+ "queue=tx,outdev=redirector1 "
+ , backend_sock[1], sock_path0, sock_path1, sock_path0);
+ qtest_start(cmdline);
+ g_free(cmdline);
+
+ recv_sock = unix_connect(sock_path1, NULL);
+ g_assert_cmpint(recv_sock, !=, -1);
+
+ /* send a qmp command to guarantee that 'connected' is setting to true. */
+ qmp("{ 'execute' : 'query-status'}");
+
+ struct iovec iov[] = {
+ {
+ .iov_base = &size,
+ .iov_len = sizeof(size),
+ }, {
+ .iov_base = send_buf,
+ .iov_len = sizeof(send_buf),
+ },
+ };
+
+ ret = iov_send(backend_sock[0], iov, 2, 0, sizeof(size) + sizeof(send_buf));
+ g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
+ close(backend_sock[0]);
+
+ 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);
+ qtest_end();
+
+#endif
+}
+
+static void test_redirector_rx(void)
+{
+#ifndef _WIN32
+/* socketpair(PF_UNIX) which does not exist on windows */
+
+ int backend_sock[2], send_sock;
+ char *cmdline;
+ uint32_t ret = 0, len = 0;
+ char send_buf[] = "Hello!!";
+ 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 = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
+ g_assert_cmpint(ret, !=, -1);
+
+ ret = mkstemp(sock_path0);
+ g_assert_cmpint(ret, !=, -1);
+ ret = mkstemp(sock_path1);
+ g_assert_cmpint(ret, !=, -1);
+
+ cmdline = g_strdup_printf("-netdev socket,id=qtest-bn0,fd=%d "
+ "-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
+ "-chardev socket,id=redirector0,path=%s,server,nowait "
+ "-chardev socket,id=redirector1,path=%s,server,nowait "
+ "-chardev socket,id=redirector2,path=%s,nowait "
+ "-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
+ "queue=rx,indev=redirector0 "
+ "-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
+ "queue=rx,outdev=redirector2 "
+ "-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
+ "queue=rx,indev=redirector1 "
+ , backend_sock[1], sock_path0, sock_path1, sock_path0);
+ qtest_start(cmdline);
+ g_free(cmdline);
+
+ 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);
+ /* send a qmp command to guarantee that 'connected' is setting to true. */
+ qmp("{ 'execute' : 'query-status'}");
+
+ 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(backend_sock[0], &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(backend_sock[0], recv_buf, len, 0);
+ g_assert_cmpstr(recv_buf, ==, send_buf);
+
+ g_free(recv_buf);
+ unlink(sock_path0);
+ unlink(sock_path1);
+ qtest_end();
+
+#endif
+}
+
+int main(int argc, char **argv)
+{
+ int ret;
+
+ g_test_init(&argc, &argv, NULL);
+ qtest_add_func("/netfilter/redirector_tx", test_redirector_tx);
+ qtest_add_func("/netfilter/redirector_rx", test_redirector_rx);
+ ret = g_test_run();
+
+ return ret;
+}
--
1.9.1
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