tests/qtest/virtio-net-test.c - qemu - Git at Google

 /*
  * QTest testcase for VirtIO NIC
  *
  * Copyright (c) 2014 SUSE LINUX Products GmbH
  *
  * 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 "qemu/osdep.h"
 #include "libqtest-single.h"
 #include "qemu/iov.h"
 #include "qemu/module.h"
 #include "qobject/qdict.h"
 #include "hw/virtio/virtio-net.h"
 #include "libqos/qgraph.h"
 #include "libqos/virtio-net.h"

 #ifndef ETH_P_RARP
 #define ETH_P_RARP 0x8035
 #endif

 #define PCI_SLOT_HP             0x06
 #define PCI_SLOT                0x04

 #define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
 #define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)

 #ifndef _WIN32

 static void rx_test(QVirtioDevice *dev,
                     QGuestAllocator *alloc, QVirtQueue *vq,
                     int socket)
 {
     QTestState *qts = global_qtest;
     uint64_t req_addr;
     uint32_t free_head;
     char test[] = "TEST";
     char buffer[64];
     int len = htonl(sizeof(test));
     struct iovec iov[] = {
         {
             .iov_base = &len,
             .iov_len = sizeof(len),
         }, {
             .iov_base = test,
             .iov_len = sizeof(test),
         },
     };
     int ret;

     req_addr = guest_alloc(alloc, 64);

     free_head = qvirtqueue_add(qts, vq, req_addr, 64, true, false);
     qvirtqueue_kick(qts, dev, vq, free_head);

     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));

     qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
                            QVIRTIO_NET_TIMEOUT_US);
     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
     g_assert_cmpstr(buffer, ==, "TEST");

     guest_free(alloc, req_addr);
 }

 static void tx_test(QVirtioDevice *dev,
                     QGuestAllocator *alloc, QVirtQueue *vq,
                     int socket)
 {
     QTestState *qts = global_qtest;
     uint64_t req_addr;
     uint32_t free_head;
     uint32_t len;
     char buffer[64];
     int ret;

     req_addr = guest_alloc(alloc, 64);
     memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);

     free_head = qvirtqueue_add(qts, vq, req_addr, 64, false, false);
     qvirtqueue_kick(qts, dev, vq, free_head);

     qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
                            QVIRTIO_NET_TIMEOUT_US);
     guest_free(alloc, req_addr);

     ret = recv(socket, &len, sizeof(len), 0);
     g_assert_cmpint(ret, ==, sizeof(len));
     len = ntohl(len);

     ret = recv(socket, buffer, len, 0);
     g_assert_cmpint(ret, ==, len);
     g_assert_cmpstr(buffer, ==, "TEST");
 }

 static void rx_stop_cont_test(QVirtioDevice *dev,
                               QGuestAllocator *alloc, QVirtQueue *vq,
                               int socket)
 {
     QTestState *qts = global_qtest;
     uint64_t req_addr;
     uint32_t free_head;
     char test[] = "TEST";
     char buffer[64];
     int len = htonl(sizeof(test));
     QDict *rsp;
     struct iovec iov[] = {
         {
             .iov_base = &len,
             .iov_len = sizeof(len),
         }, {
             .iov_base = test,
             .iov_len = sizeof(test),
         },
     };
     int ret;

     req_addr = guest_alloc(alloc, 64);

     free_head = qvirtqueue_add(qts, vq, req_addr, 64, true, false);
     qvirtqueue_kick(qts, dev, vq, free_head);

     rsp = qmp("{ 'execute' : 'stop'}");
     qobject_unref(rsp);

     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));

     /* We could check the status, but this command is more importantly to
      * ensure the packet data gets queued in QEMU, before we do 'cont'.
      */
     rsp = qmp("{ 'execute' : 'query-status'}");
     qobject_unref(rsp);
     rsp = qmp("{ 'execute' : 'cont'}");
     qobject_unref(rsp);

     qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
                            QVIRTIO_NET_TIMEOUT_US);
     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
     g_assert_cmpstr(buffer, ==, "TEST");

     guest_free(alloc, req_addr);
 }

 static void send_recv_test(void *obj, void *data, QGuestAllocator *t_alloc)
 {
     QVirtioNet *net_if = obj;
     QVirtioDevice *dev = net_if->vdev;
     QVirtQueue *rx = net_if->queues[0];
     QVirtQueue *tx = net_if->queues[1];
     int *sv = data;

     rx_test(dev, t_alloc, rx, sv[0]);
     tx_test(dev, t_alloc, tx, sv[0]);
 }

 static void stop_cont_test(void *obj, void *data, QGuestAllocator *t_alloc)
 {
     QVirtioNet *net_if = obj;
     QVirtioDevice *dev = net_if->vdev;
     QVirtQueue *rx = net_if->queues[0];
     int *sv = data;

     rx_stop_cont_test(dev, t_alloc, rx, sv[0]);
 }

 static void hotplug(void *obj, void *data, QGuestAllocator *t_alloc)
 {
     QVirtioPCIDevice *dev = obj;
     QTestState *qts = dev->pdev->bus->qts;
     const char *arch = qtest_get_arch();

     if (dev->pdev->bus->not_hotpluggable) {
         g_test_skip("pci bus does not support hotplug");
         return;
     }

     qtest_qmp_device_add(qts, "virtio-net-pci", "net1",
                          "{'addr': %s}", stringify(PCI_SLOT_HP));

     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
         qpci_unplug_acpi_device_test(qts, "net1", PCI_SLOT_HP);
     }
 }

 static void announce_self(void *obj, void *data, QGuestAllocator *t_alloc)
 {
     int *sv = data;
     char buffer[60];
     int len;
     QDict *rsp;
     int ret;
     uint16_t *proto = (uint16_t *)&buffer[12];
     size_t total_received = 0;
     uint64_t start, now, last_rxt, deadline;

     /* Send a set of packets over a few second period */
     rsp = qmp("{ 'execute' : 'announce-self', "
                   " 'arguments': {"
                       " 'initial': 20, 'max': 100,"
                       " 'rounds': 300, 'step': 10, 'id': 'bob' } }");
     assert(!qdict_haskey(rsp, "error"));
     qobject_unref(rsp);

     /* Catch the first packet and make sure it's a RARP */
     ret = recv(sv[0], &len, sizeof(len), 0);
     g_assert_cmpint(ret, ==,  sizeof(len));
     len = ntohl(len);

     ret = recv(sv[0], buffer, len, 0);
     g_assert_cmpint(*proto, ==, htons(ETH_P_RARP));

     /*
      * Stop the announcement by settings rounds to 0 on the
      * existing timer.
      */
     rsp = qmp("{ 'execute' : 'announce-self', "
                   " 'arguments': {"
                       " 'initial': 20, 'max': 100,"
                       " 'rounds': 0, 'step': 10, 'id': 'bob' } }");
     assert(!qdict_haskey(rsp, "error"));
     qobject_unref(rsp);

     /* Now make sure the packets stop */

     /* Times are in us */
     start = g_get_monotonic_time();
     /* 30 packets, max gap 100ms, * 4 for wiggle */
     deadline = start + 1000 * (100 * 30 * 4);
     last_rxt = start;

     while (true) {
         int saved_err;
         ret = recv(sv[0], buffer, 60, MSG_DONTWAIT);
         saved_err = errno;
         now = g_get_monotonic_time();
         g_assert_cmpint(now, <, deadline);

         if (ret >= 0) {
             if (ret) {
                 last_rxt = now;
             }
             total_received += ret;

             /* Check it's not spewing loads */
             g_assert_cmpint(total_received, <, 60 * 30 * 2);
         } else {
             g_assert_cmpint(saved_err, ==, EAGAIN);

             /* 400ms, i.e. 4 worst case gaps */
             if ((now - last_rxt) > (1000 * 100 * 4)) {
                 /* Nothings arrived for a while - must have stopped */
                 break;
             };

             /* 100ms */
             g_usleep(1000 * 100);
         }
     };
 }

 static void virtio_net_test_cleanup(void *sockets)
 {
     int *sv = sockets;

     close(sv[0]);
     qos_invalidate_command_line();
     close(sv[1]);
     g_free(sv);
 }

 static void *virtio_net_test_setup(GString *cmd_line, void *arg)
 {
     int ret;
     int *sv = g_new(int, 2);

     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
     g_assert_cmpint(ret, !=, -1);

     g_string_append_printf(cmd_line, " -netdev socket,fd=%d,id=hs0 ", sv[1]);

     g_test_queue_destroy(virtio_net_test_cleanup, sv);
     return sv;
 }

 #endif /* _WIN32 */

 static void large_tx(void *obj, void *data, QGuestAllocator *t_alloc)
 {
     QVirtioNet *dev = obj;
     QVirtQueue *vq = dev->queues[1];
     uint64_t req_addr;
     uint32_t free_head;
     size_t alloc_size = (size_t)data / 64;
     QTestState *qts = global_qtest;
     int i;

     /* Bypass the limitation by pointing several descriptors to a single
      * smaller area */
     req_addr = guest_alloc(t_alloc, alloc_size);
     free_head = qvirtqueue_add(qts, vq, req_addr, alloc_size, false, true);

     for (i = 0; i < 64; i++) {
         qvirtqueue_add(qts, vq, req_addr, alloc_size, false, i != 63);
     }
     qvirtqueue_kick(qts, dev->vdev, vq, free_head);

     qvirtio_wait_used_elem(qts, dev->vdev, vq, free_head, NULL,
                            QVIRTIO_NET_TIMEOUT_US);
     guest_free(t_alloc, req_addr);
 }

 static void *virtio_net_test_setup_nosocket(GString *cmd_line, void *arg)
 {
     g_string_append(cmd_line, " -netdev hubport,hubid=0,id=hs0 ");
     return arg;
 }

 static void register_virtio_net_test(void)
 {
     QOSGraphTestOptions opts = { 0 };

 #ifndef _WIN32
     opts.before = virtio_net_test_setup;
     qos_add_test("hotplug", "virtio-net-pci", hotplug, &opts);
     qos_add_test("basic", "virtio-net", send_recv_test, &opts);
     qos_add_test("rx_stop_cont", "virtio-net", stop_cont_test, &opts);
     qos_add_test("announce-self", "virtio-net", announce_self, &opts);
 #endif

     /* These tests do not need a loopback backend.  */
     opts.before = virtio_net_test_setup_nosocket;
     opts.arg = (gpointer)UINT_MAX;
     qos_add_test("large_tx/uint_max", "virtio-net", large_tx, &opts);
     opts.arg = (gpointer)NET_BUFSIZE;
     qos_add_test("large_tx/net_bufsize", "virtio-net", large_tx, &opts);
 }

 libqos_init(register_virtio_net_test);
	/*
	* QTest testcase for VirtIO NIC
	*
	* Copyright (c) 2014 SUSE LINUX Products GmbH
	*
	* 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 "qemu/osdep.h"
	#include "libqtest-single.h"
	#include "qemu/iov.h"
	#include "qemu/module.h"
	#include "qobject/qdict.h"
	#include "hw/virtio/virtio-net.h"
	#include "libqos/qgraph.h"
	#include "libqos/virtio-net.h"

	#ifndef ETH_P_RARP
	#define ETH_P_RARP 0x8035
	#endif

	#define PCI_SLOT_HP 0x06
	#define PCI_SLOT 0x04

	#define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
	#define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)

	#ifndef _WIN32

	static void rx_test(QVirtioDevice *dev,
	QGuestAllocator alloc, QVirtQueue vq,
	int socket)
	{
	QTestState *qts = global_qtest;
	uint64_t req_addr;
	uint32_t free_head;
	char test[] = "TEST";
	char buffer[64];
	int len = htonl(sizeof(test));
	struct iovec iov[] = {
	{
	.iov_base = &len,
	.iov_len = sizeof(len),
	}, {
	.iov_base = test,
	.iov_len = sizeof(test),
	},
	};
	int ret;

	req_addr = guest_alloc(alloc, 64);

	free_head = qvirtqueue_add(qts, vq, req_addr, 64, true, false);
	qvirtqueue_kick(qts, dev, vq, free_head);

	ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
	g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));

	qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
	QVIRTIO_NET_TIMEOUT_US);
	memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
	g_assert_cmpstr(buffer, ==, "TEST");

	guest_free(alloc, req_addr);
	}

	static void tx_test(QVirtioDevice *dev,
	QGuestAllocator alloc, QVirtQueue vq,
	int socket)
	{
	QTestState *qts = global_qtest;
	uint64_t req_addr;
	uint32_t free_head;
	uint32_t len;
	char buffer[64];
	int ret;

	req_addr = guest_alloc(alloc, 64);
	memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);

	free_head = qvirtqueue_add(qts, vq, req_addr, 64, false, false);
	qvirtqueue_kick(qts, dev, vq, free_head);

	qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
	QVIRTIO_NET_TIMEOUT_US);
	guest_free(alloc, req_addr);

	ret = recv(socket, &len, sizeof(len), 0);
	g_assert_cmpint(ret, ==, sizeof(len));
	len = ntohl(len);

	ret = recv(socket, buffer, len, 0);
	g_assert_cmpint(ret, ==, len);
	g_assert_cmpstr(buffer, ==, "TEST");
	}

	static void rx_stop_cont_test(QVirtioDevice *dev,
	QGuestAllocator alloc, QVirtQueue vq,
	int socket)
	{
	QTestState *qts = global_qtest;
	uint64_t req_addr;
	uint32_t free_head;
	char test[] = "TEST";
	char buffer[64];
	int len = htonl(sizeof(test));
	QDict *rsp;
	struct iovec iov[] = {
	{
	.iov_base = &len,
	.iov_len = sizeof(len),
	}, {
	.iov_base = test,
	.iov_len = sizeof(test),
	},
	};
	int ret;

	req_addr = guest_alloc(alloc, 64);

	free_head = qvirtqueue_add(qts, vq, req_addr, 64, true, false);
	qvirtqueue_kick(qts, dev, vq, free_head);

	rsp = qmp("{ 'execute' : 'stop'}");
	qobject_unref(rsp);

	ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
	g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));

	/* We could check the status, but this command is more importantly to
	* ensure the packet data gets queued in QEMU, before we do 'cont'.
	*/
	rsp = qmp("{ 'execute' : 'query-status'}");
	qobject_unref(rsp);
	rsp = qmp("{ 'execute' : 'cont'}");
	qobject_unref(rsp);

	qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
	QVIRTIO_NET_TIMEOUT_US);
	memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
	g_assert_cmpstr(buffer, ==, "TEST");

	guest_free(alloc, req_addr);
	}

	static void send_recv_test(void obj, void data, QGuestAllocator *t_alloc)
	{
	QVirtioNet *net_if = obj;
	QVirtioDevice *dev = net_if->vdev;
	QVirtQueue *rx = net_if->queues[0];
	QVirtQueue *tx = net_if->queues[1];
	int *sv = data;

	rx_test(dev, t_alloc, rx, sv[0]);
	tx_test(dev, t_alloc, tx, sv[0]);
	}

	static void stop_cont_test(void obj, void data, QGuestAllocator *t_alloc)
	{
	QVirtioNet *net_if = obj;
	QVirtioDevice *dev = net_if->vdev;
	QVirtQueue *rx = net_if->queues[0];
	int *sv = data;

	rx_stop_cont_test(dev, t_alloc, rx, sv[0]);
	}

	static void hotplug(void obj, void data, QGuestAllocator *t_alloc)
	{
	QVirtioPCIDevice *dev = obj;
	QTestState *qts = dev->pdev->bus->qts;
	const char *arch = qtest_get_arch();

	if (dev->pdev->bus->not_hotpluggable) {
	g_test_skip("pci bus does not support hotplug");
	return;
	}

	qtest_qmp_device_add(qts, "virtio-net-pci", "net1",
	"{'addr': %s}", stringify(PCI_SLOT_HP));

	if (strcmp(arch, "i386") == 0 \|\| strcmp(arch, "x86_64") == 0) {
	qpci_unplug_acpi_device_test(qts, "net1", PCI_SLOT_HP);
	}
	}

	static void announce_self(void obj, void data, QGuestAllocator *t_alloc)
	{
	int *sv = data;
	char buffer[60];
	int len;
	QDict *rsp;
	int ret;
	uint16_t proto = (uint16_t )&buffer[12];
	size_t total_received = 0;
	uint64_t start, now, last_rxt, deadline;

	/* Send a set of packets over a few second period */
	rsp = qmp("{ 'execute' : 'announce-self', "
	" 'arguments': {"
	" 'initial': 20, 'max': 100,"
	" 'rounds': 300, 'step': 10, 'id': 'bob' } }");
	assert(!qdict_haskey(rsp, "error"));
	qobject_unref(rsp);

	/* Catch the first packet and make sure it's a RARP */
	ret = recv(sv[0], &len, sizeof(len), 0);
	g_assert_cmpint(ret, ==, sizeof(len));
	len = ntohl(len);

	ret = recv(sv[0], buffer, len, 0);
	g_assert_cmpint(*proto, ==, htons(ETH_P_RARP));

	/*
	* Stop the announcement by settings rounds to 0 on the
	* existing timer.
	*/
	rsp = qmp("{ 'execute' : 'announce-self', "
	" 'arguments': {"
	" 'initial': 20, 'max': 100,"
	" 'rounds': 0, 'step': 10, 'id': 'bob' } }");
	assert(!qdict_haskey(rsp, "error"));
	qobject_unref(rsp);

	/* Now make sure the packets stop */

	/* Times are in us */
	start = g_get_monotonic_time();
	/* 30 packets, max gap 100ms, * 4 for wiggle */
	deadline = start + 1000 * (100 * 30 * 4);
	last_rxt = start;

	while (true) {
	int saved_err;
	ret = recv(sv[0], buffer, 60, MSG_DONTWAIT);
	saved_err = errno;
	now = g_get_monotonic_time();
	g_assert_cmpint(now, <, deadline);

	if (ret >= 0) {
	if (ret) {
	last_rxt = now;
	}
	total_received += ret;

	/* Check it's not spewing loads */
	g_assert_cmpint(total_received, <, 60 * 30 * 2);
	} else {
	g_assert_cmpint(saved_err, ==, EAGAIN);

	/* 400ms, i.e. 4 worst case gaps */
	if ((now - last_rxt) > (1000 * 100 * 4)) {
	/* Nothings arrived for a while - must have stopped */
	break;
	};

	/* 100ms */
	g_usleep(1000 * 100);
	}
	};
	}

	static void virtio_net_test_cleanup(void *sockets)
	{
	int *sv = sockets;

	close(sv[0]);
	qos_invalidate_command_line();
	close(sv[1]);
	g_free(sv);
	}

	static void virtio_net_test_setup(GString cmd_line, void *arg)
	{
	int ret;
	int *sv = g_new(int, 2);

	ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
	g_assert_cmpint(ret, !=, -1);

	g_string_append_printf(cmd_line, " -netdev socket,fd=%d,id=hs0 ", sv[1]);

	g_test_queue_destroy(virtio_net_test_cleanup, sv);
	return sv;
	}

	#endif /* _WIN32 */

	static void large_tx(void obj, void data, QGuestAllocator *t_alloc)
	{
	QVirtioNet *dev = obj;
	QVirtQueue *vq = dev->queues[1];
	uint64_t req_addr;
	uint32_t free_head;
	size_t alloc_size = (size_t)data / 64;
	QTestState *qts = global_qtest;
	int i;

	/* Bypass the limitation by pointing several descriptors to a single
	* smaller area */
	req_addr = guest_alloc(t_alloc, alloc_size);
	free_head = qvirtqueue_add(qts, vq, req_addr, alloc_size, false, true);

	for (i = 0; i < 64; i++) {
	qvirtqueue_add(qts, vq, req_addr, alloc_size, false, i != 63);
	}
	qvirtqueue_kick(qts, dev->vdev, vq, free_head);

	qvirtio_wait_used_elem(qts, dev->vdev, vq, free_head, NULL,
	QVIRTIO_NET_TIMEOUT_US);
	guest_free(t_alloc, req_addr);
	}

	static void virtio_net_test_setup_nosocket(GString cmd_line, void *arg)
	{
	g_string_append(cmd_line, " -netdev hubport,hubid=0,id=hs0 ");
	return arg;
	}

	static void register_virtio_net_test(void)
	{
	QOSGraphTestOptions opts = { 0 };

	#ifndef _WIN32
	opts.before = virtio_net_test_setup;
	qos_add_test("hotplug", "virtio-net-pci", hotplug, &opts);
	qos_add_test("basic", "virtio-net", send_recv_test, &opts);
	qos_add_test("rx_stop_cont", "virtio-net", stop_cont_test, &opts);
	qos_add_test("announce-self", "virtio-net", announce_self, &opts);
	#endif

	/* These tests do not need a loopback backend. */
	opts.before = virtio_net_test_setup_nosocket;
	opts.arg = (gpointer)UINT_MAX;
	qos_add_test("large_tx/uint_max", "virtio-net", large_tx, &opts);
	opts.arg = (gpointer)NET_BUFSIZE;
	qos_add_test("large_tx/net_bufsize", "virtio-net", large_tx, &opts);
	}

	libqos_init(register_virtio_net_test);