/*
* 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 "qemu-common.h"
#include "libqtest-single.h"
#include "qemu/iov.h"
#include "qemu/module.h"
#include "qapi/qmp/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 = qemu_recv(socket, &len, sizeof(len), 0);
g_assert_cmpint(ret, ==, sizeof(len));
len = ntohl(len);
ret = qemu_recv(socket, buffer, len, 0);
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]);
}
#endif
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();
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 = qemu_recv(sv[0], &len, sizeof(len), 0);
g_assert_cmpint(ret, ==, sizeof(len));
len = ntohl(len);
ret = qemu_recv(sv[0], buffer, len, 0);
g_assert_cmpint(*proto, ==, htons(ETH_P_RARP));
/*
* Stop the announcment 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 = qemu_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;
}
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 = {
.before = virtio_net_test_setup,
};
qos_add_test("hotplug", "virtio-net-pci", hotplug, &opts);
#ifndef _WIN32
qos_add_test("basic", "virtio-net", send_recv_test, &opts);
qos_add_test("rx_stop_cont", "virtio-net", stop_cont_test, &opts);
#endif
qos_add_test("announce-self", "virtio-net", announce_self, &opts);
/* 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);
