tests: introduce basic pci test for virtio-net

Signed-off-by: NJason Wang <jasowang@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Message-id: 1437117954-16342-1-git-send-email-jasowang@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

tests/Makefile

@@ -381,7 +381,7 @@ tests/wdt_ib700-test$(EXESUF): tests/wdt_ib700-test.o
 tests/tco-test$(EXESUF): tests/tco-test.o $(libqos-pc-obj-y)
 tests/virtio-balloon-test$(EXESUF): tests/virtio-balloon-test.o
 tests/virtio-blk-test$(EXESUF): tests/virtio-blk-test.o $(libqos-virtio-obj-y)
-tests/virtio-net-test$(EXESUF): tests/virtio-net-test.o $(libqos-pc-obj-y)
+tests/virtio-net-test$(EXESUF): tests/virtio-net-test.o $(libqos-pc-obj-y) $(libqos-virtio-obj-y)
 tests/virtio-rng-test$(EXESUF): tests/virtio-rng-test.o $(libqos-pc-obj-y)
 tests/virtio-scsi-test$(EXESUF): tests/virtio-scsi-test.o $(libqos-virtio-obj-y)
 tests/virtio-9p-test$(EXESUF): tests/virtio-9p-test.o

tests/virtio-net-test.c

@@ -10,20 +10,192 @@
 #include <glib.h>
 #include <string.h>
 #include "libqtest.h"
+#include "qemu-common.h"
+#include "qemu/sockets.h"
 #include "qemu/osdep.h"
-#include "libqos/pci.h"
+#include "qemu/iov.h"
+#include "libqos/pci-pc.h"
+#include "libqos/virtio.h"
+#include "libqos/virtio-pci.h"
+#include "libqos/malloc.h"
+#include "libqos/malloc-pc.h"
+#include "libqos/malloc-generic.h"
+#include "qemu/bswap.h"
+#include "hw/virtio/virtio-net.h"
 
 #define PCI_SLOT_HP             0x06
+#define PCI_SLOT                0x04
+#define PCI_FN                  0x00
 
-/* Tests only initialization so far. TODO: Replace with functional tests */
-static void pci_nop(void)
+#define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
+#define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)
+
+static void test_end(void)
+{
+    qtest_end();
+}
+
+#ifndef _WIN32
+
+static QVirtioPCIDevice *virtio_net_pci_init(QPCIBus *bus, int slot)
+{
+    QVirtioPCIDevice *dev;
+
+    dev = qvirtio_pci_device_find(bus, QVIRTIO_NET_DEVICE_ID);
+    g_assert(dev != NULL);
+    g_assert_cmphex(dev->vdev.device_type, ==, QVIRTIO_NET_DEVICE_ID);
+
+    qvirtio_pci_device_enable(dev);
+    qvirtio_reset(&qvirtio_pci, &dev->vdev);
+    qvirtio_set_acknowledge(&qvirtio_pci, &dev->vdev);
+    qvirtio_set_driver(&qvirtio_pci, &dev->vdev);
+
+    return dev;
+}
+
+static QPCIBus *pci_test_start(int socket)
+{
+    char *cmdline;
+
+    cmdline = g_strdup_printf("-netdev socket,fd=%d,id=hs0 -device "
+                              "virtio-net-pci,netdev=hs0", socket);
+    qtest_start(cmdline);
+    g_free(cmdline);
+
+    return qpci_init_pc();
+}
+
+static void driver_init(const QVirtioBus *bus, QVirtioDevice *dev)
+{
+    uint32_t features;
+
+    features = qvirtio_get_features(bus, dev);
+    features = features & ~(QVIRTIO_F_BAD_FEATURE |
+                            QVIRTIO_F_RING_INDIRECT_DESC |
+                            QVIRTIO_F_RING_EVENT_IDX);
+    qvirtio_set_features(bus, dev, features);
+
+    qvirtio_set_driver_ok(bus, dev);
+}
+
+static void rx_test(const QVirtioBus *bus, QVirtioDevice *dev,
+                    QGuestAllocator *alloc, QVirtQueue *vq,
+                    int socket)
+{
+    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(vq, req_addr, 64, true, false);
+    qvirtqueue_kick(bus, 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_queue_isr(bus, dev, vq, 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(const QVirtioBus *bus, QVirtioDevice *dev,
+                    QGuestAllocator *alloc, QVirtQueue *vq,
+                    int socket)
+{
+    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(vq, req_addr, 64, false, false);
+    qvirtqueue_kick(bus, dev, vq, free_head);
+
+    qvirtio_wait_queue_isr(bus, dev, vq, 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 send_recv_test(const QVirtioBus *bus, QVirtioDevice *dev,
+                           QGuestAllocator *alloc, QVirtQueue *rvq,
+                           QVirtQueue *tvq, int socket)
 {
+    rx_test(bus, dev, alloc, rvq, socket);
+    tx_test(bus, dev, alloc, tvq, socket);
 }
 
+static void pci_basic(gconstpointer data)
+{
+    QVirtioPCIDevice *dev;
+    QPCIBus *bus;
+    QVirtQueuePCI *tx, *rx;
+    QGuestAllocator *alloc;
+    void (*func) (const QVirtioBus *bus,
+                  QVirtioDevice *dev,
+                  QGuestAllocator *alloc,
+                  QVirtQueue *rvq,
+                  QVirtQueue *tvq,
+                  int socket) = data;
+    int sv[2], ret;
+
+    ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
+    g_assert_cmpint(ret, !=, -1);
+
+    bus = pci_test_start(sv[1]);
+    dev = virtio_net_pci_init(bus, PCI_SLOT);
+
+    alloc = pc_alloc_init();
+    rx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
+                                           alloc, 0);
+    tx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
+                                           alloc, 1);
+
+    driver_init(&qvirtio_pci, &dev->vdev);
+    func(&qvirtio_pci, &dev->vdev, alloc, &rx->vq, &tx->vq, sv[0]);
+
+    /* End test */
+    close(sv[0]);
+    guest_free(alloc, tx->vq.desc);
+    pc_alloc_uninit(alloc);
+    qvirtio_pci_device_disable(dev);
+    g_free(dev);
+    qpci_free_pc(bus);
+    test_end();
+}
+#endif
+
 static void hotplug(void)
 {
+    qtest_start("-device virtio-net-pci");
+
     qpci_plug_device_test("virtio-net-pci", "net1", PCI_SLOT_HP, NULL);
     qpci_unplug_acpi_device_test("net1", PCI_SLOT_HP);
+
+    test_end();
 }
 
 int main(int argc, char **argv)
@@ -31,13 +203,12 @@ int main(int argc, char **argv)
     int ret;
 
     g_test_init(&argc, &argv, NULL);
-    qtest_add_func("/virtio/net/pci/nop", pci_nop);
+#ifndef _WIN32
+    qtest_add_data_func("/virtio/net/pci/basic", send_recv_test, pci_basic);
+#endif
     qtest_add_func("/virtio/net/pci/hotplug", hotplug);
 
-    qtest_start("-device virtio-net-pci");
     ret = g_test_run();
 
-    qtest_end();
-
     return ret;
 }