test: Move qtests to a separate directory

The tests directory itself is pretty overcrowded, and it's hard to
see which test belongs to which test subsystem (unit, qtest, ...).
Let's move the qtests to a separate folder for more clarity.

Message-Id: <20191218103059.11729-6-thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 337 insertions, 0 deletions

diff --git a/tests/qtest/virtio-net-test.c b/tests/qtest/virtio-net-test.c
new file mode 100644
index 0000000000..a08e2ffe12
--- /dev/null
+++ b/tests/qtest/virtio-net-test.c
@@ -0,0 +1,337 @@
+/*
+ * 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-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);