tests/virtio-net-test.c

   1 /*
   2  * QTest testcase for VirtIO NIC
   3  *
   4  * Copyright (c) 2014 SUSE LINUX Products GmbH
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "libqtest.h"
  12 #include "qemu-common.h"
  13 #include "qemu/sockets.h"
  14 #include "qemu/iov.h"
  15 #include "libqos/pci-pc.h"
  16 #include "libqos/virtio.h"
  17 #include "libqos/virtio-pci.h"
  18 #include "libqos/malloc.h"
  19 #include "libqos/malloc-pc.h"
  20 #include "libqos/malloc-generic.h"
  21 #include "qemu/bswap.h"
  22 #include "hw/virtio/virtio-net.h"
  23 #include "standard-headers/linux/virtio_ids.h"
  24 #include "standard-headers/linux/virtio_ring.h"
  25
  26 #define PCI_SLOT_HP             0x06
  27 #define PCI_SLOT                0x04
  28 #define PCI_FN                  0x00
  29
  30 #define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
  31 #define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)
  32
  33 static void test_end(void)
  34 {
  35     qtest_end();
  36 }
  37
  38 #ifndef _WIN32
  39
  40 static QVirtioPCIDevice *virtio_net_pci_init(QPCIBus *bus, int slot)
  41 {
  42     QVirtioPCIDevice *dev;
  43
  44     dev = qvirtio_pci_device_find(bus, VIRTIO_ID_NET);
  45     g_assert(dev != NULL);
  46     g_assert_cmphex(dev->vdev.device_type, ==, VIRTIO_ID_NET);
  47
  48     qvirtio_pci_device_enable(dev);
  49     qvirtio_reset(&qvirtio_pci, &dev->vdev);
  50     qvirtio_set_acknowledge(&qvirtio_pci, &dev->vdev);
  51     qvirtio_set_driver(&qvirtio_pci, &dev->vdev);
  52
  53     return dev;
  54 }
  55
  56 static QPCIBus *pci_test_start(int socket)
  57 {
  58     char *cmdline;
  59
  60     cmdline = g_strdup_printf("-netdev socket,fd=%d,id=hs0 -device "
  61                               "virtio-net-pci,netdev=hs0", socket);
  62     qtest_start(cmdline);
  63     g_free(cmdline);
  64
  65     return qpci_init_pc();
  66 }
  67
  68 static void driver_init(const QVirtioBus *bus, QVirtioDevice *dev)
  69 {
  70     uint32_t features;
  71
  72     features = qvirtio_get_features(bus, dev);
  73     features = features & ~(QVIRTIO_F_BAD_FEATURE |
  74                             (1u << VIRTIO_RING_F_INDIRECT_DESC) |
  75                             (1u << VIRTIO_RING_F_EVENT_IDX));
  76     qvirtio_set_features(bus, dev, features);
  77
  78     qvirtio_set_driver_ok(bus, dev);
  79 }
  80
  81 static void rx_test(const QVirtioBus *bus, QVirtioDevice *dev,
  82                     QGuestAllocator *alloc, QVirtQueue *vq,
  83                     int socket)
  84 {
  85     uint64_t req_addr;
  86     uint32_t free_head;
  87     char test[] = "TEST";
  88     char buffer[64];
  89     int len = htonl(sizeof(test));
  90     struct iovec iov[] = {
  91         {
  92             .iov_base = &len,
  93             .iov_len = sizeof(len),
  94         }, {
  95             .iov_base = test,
  96             .iov_len = sizeof(test),
  97         },
  98     };
  99     int ret;
 100
 101     req_addr = guest_alloc(alloc, 64);
 102
 103     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 104     qvirtqueue_kick(bus, dev, vq, free_head);
 105
 106     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 107     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 108
 109     qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
 110     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 111     g_assert_cmpstr(buffer, ==, "TEST");
 112
 113     guest_free(alloc, req_addr);
 114 }
 115
 116 static void tx_test(const QVirtioBus *bus, QVirtioDevice *dev,
 117                     QGuestAllocator *alloc, QVirtQueue *vq,
 118                     int socket)
 119 {
 120     uint64_t req_addr;
 121     uint32_t free_head;
 122     uint32_t len;
 123     char buffer[64];
 124     int ret;
 125
 126     req_addr = guest_alloc(alloc, 64);
 127     memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);
 128
 129     free_head = qvirtqueue_add(vq, req_addr, 64, false, false);
 130     qvirtqueue_kick(bus, dev, vq, free_head);
 131
 132     qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
 133     guest_free(alloc, req_addr);
 134
 135     ret = qemu_recv(socket, &len, sizeof(len), 0);
 136     g_assert_cmpint(ret, ==, sizeof(len));
 137     len = ntohl(len);
 138
 139     ret = qemu_recv(socket, buffer, len, 0);
 140     g_assert_cmpstr(buffer, ==, "TEST");
 141 }
 142
 143 static void rx_stop_cont_test(const QVirtioBus *bus, QVirtioDevice *dev,
 144                               QGuestAllocator *alloc, QVirtQueue *vq,
 145                               int socket)
 146 {
 147     uint64_t req_addr;
 148     uint32_t free_head;
 149     char test[] = "TEST";
 150     char buffer[64];
 151     int len = htonl(sizeof(test));
 152     struct iovec iov[] = {
 153         {
 154             .iov_base = &len,
 155             .iov_len = sizeof(len),
 156         }, {
 157             .iov_base = test,
 158             .iov_len = sizeof(test),
 159         },
 160     };
 161     int ret;
 162
 163     req_addr = guest_alloc(alloc, 64);
 164
 165     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 166     qvirtqueue_kick(bus, dev, vq, free_head);
 167
 168     qmp("{ 'execute' : 'stop'}");
 169
 170     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 171     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 172
 173     /* We could check the status, but this command is more importantly to
 174      * ensure the packet data gets queued in QEMU, before we do 'cont'.
 175      */
 176     qmp("{ 'execute' : 'query-status'}");
 177     qmp("{ 'execute' : 'cont'}");
 178
 179     qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
 180     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 181     g_assert_cmpstr(buffer, ==, "TEST");
 182
 183     guest_free(alloc, req_addr);
 184 }
 185
 186 static void send_recv_test(const QVirtioBus *bus, QVirtioDevice *dev,
 187                            QGuestAllocator *alloc, QVirtQueue *rvq,
 188                            QVirtQueue *tvq, int socket)
 189 {
 190     rx_test(bus, dev, alloc, rvq, socket);
 191     tx_test(bus, dev, alloc, tvq, socket);
 192 }
 193
 194 static void stop_cont_test(const QVirtioBus *bus, QVirtioDevice *dev,
 195                            QGuestAllocator *alloc, QVirtQueue *rvq,
 196                            QVirtQueue *tvq, int socket)
 197 {
 198     rx_stop_cont_test(bus, dev, alloc, rvq, socket);
 199 }
 200
 201 static void pci_basic(gconstpointer data)
 202 {
 203     QVirtioPCIDevice *dev;
 204     QPCIBus *bus;
 205     QVirtQueuePCI *tx, *rx;
 206     QGuestAllocator *alloc;
 207     void (*func) (const QVirtioBus *bus,
 208                   QVirtioDevice *dev,
 209                   QGuestAllocator *alloc,
 210                   QVirtQueue *rvq,
 211                   QVirtQueue *tvq,
 212                   int socket) = data;
 213     int sv[2], ret;
 214
 215     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
 216     g_assert_cmpint(ret, !=, -1);
 217
 218     bus = pci_test_start(sv[1]);
 219     dev = virtio_net_pci_init(bus, PCI_SLOT);
 220
 221     alloc = pc_alloc_init();
 222     rx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
 223                                            alloc, 0);
 224     tx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
 225                                            alloc, 1);
 226
 227     driver_init(&qvirtio_pci, &dev->vdev);
 228     func(&qvirtio_pci, &dev->vdev, alloc, &rx->vq, &tx->vq, sv[0]);
 229
 230     /* End test */
 231     close(sv[0]);
 232     qvirtqueue_cleanup(&qvirtio_pci, &tx->vq, alloc);
 233     pc_alloc_uninit(alloc);
 234     qvirtio_pci_device_disable(dev);
 235     g_free(dev);
 236     qpci_free_pc(bus);
 237     test_end();
 238 }
 239 #endif
 240
 241 static void hotplug(void)
 242 {
 243     qtest_start("-device virtio-net-pci");
 244
 245     qpci_plug_device_test("virtio-net-pci", "net1", PCI_SLOT_HP, NULL);
 246     qpci_unplug_acpi_device_test("net1", PCI_SLOT_HP);
 247
 248     test_end();
 249 }
 250
 251 int main(int argc, char **argv)
 252 {
 253     g_test_init(&argc, &argv, NULL);
 254 #ifndef _WIN32
 255     qtest_add_data_func("/virtio/net/pci/basic", send_recv_test, pci_basic);
 256     qtest_add_data_func("/virtio/net/pci/rx_stop_cont",
 257                         stop_cont_test, pci_basic);
 258 #endif
 259     qtest_add_func("/virtio/net/pci/hotplug", hotplug);
 260
 261     return g_test_run();
 262 }