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/libqos-pc.h"
  16 #include "libqos/libqos-spapr.h"
  17 #include "libqos/virtio.h"
  18 #include "libqos/virtio-pci.h"
  19 #include "qapi/qmp/qdict.h"
  20 #include "qemu/bswap.h"
  21 #include "hw/virtio/virtio-net.h"
  22 #include "standard-headers/linux/virtio_ids.h"
  23 #include "standard-headers/linux/virtio_ring.h"
  24
  25 #define PCI_SLOT_HP             0x06
  26 #define PCI_SLOT                0x04
  27
  28 #define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
  29 #define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)
  30
  31 static void test_end(void)
  32 {
  33     qtest_end();
  34 }
  35
  36 #ifndef _WIN32
  37
  38 static QVirtioPCIDevice *virtio_net_pci_init(QPCIBus *bus, int slot)
  39 {
  40     QVirtioPCIDevice *dev;
  41
  42     dev = qvirtio_pci_device_find(bus, VIRTIO_ID_NET);
  43     g_assert(dev != NULL);
  44     g_assert_cmphex(dev->vdev.device_type, ==, VIRTIO_ID_NET);
  45
  46     qvirtio_pci_device_enable(dev);
  47     qvirtio_reset(&dev->vdev);
  48     qvirtio_set_acknowledge(&dev->vdev);
  49     qvirtio_set_driver(&dev->vdev);
  50
  51     return dev;
  52 }
  53
  54 GCC_FMT_ATTR(1, 2)
  55 static QOSState *pci_test_start(const char *cmd, ...)
  56 {
  57     QOSState *qs;
  58     va_list ap;
  59     const char *arch = qtest_get_arch();
  60
  61     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
  62         va_start(ap, cmd);
  63         qs = qtest_pc_vboot(cmd, ap);
  64         va_end(ap);
  65     } else if (strcmp(arch, "ppc64") == 0) {
  66         va_start(ap, cmd);
  67         qs = qtest_spapr_vboot(cmd, ap);
  68         va_end(ap);
  69     } else {
  70         g_printerr("virtio-net tests are only available on x86 or ppc64\n");
  71         exit(EXIT_FAILURE);
  72     }
  73     global_qtest = qs->qts;
  74     return qs;
  75 }
  76
  77 static void driver_init(QVirtioDevice *dev)
  78 {
  79     uint32_t features;
  80
  81     features = qvirtio_get_features(dev);
  82     features = features & ~(QVIRTIO_F_BAD_FEATURE |
  83                             (1u << VIRTIO_RING_F_INDIRECT_DESC) |
  84                             (1u << VIRTIO_RING_F_EVENT_IDX));
  85     qvirtio_set_features(dev, features);
  86
  87     qvirtio_set_driver_ok(dev);
  88 }
  89
  90 static void rx_test(QVirtioDevice *dev,
  91                     QGuestAllocator *alloc, QVirtQueue *vq,
  92                     int socket)
  93 {
  94     uint64_t req_addr;
  95     uint32_t free_head;
  96     char test[] = "TEST";
  97     char buffer[64];
  98     int len = htonl(sizeof(test));
  99     struct iovec iov[] = {
 100         {
 101             .iov_base = &len,
 102             .iov_len = sizeof(len),
 103         }, {
 104             .iov_base = test,
 105             .iov_len = sizeof(test),
 106         },
 107     };
 108     int ret;
 109
 110     req_addr = guest_alloc(alloc, 64);
 111
 112     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 113     qvirtqueue_kick(dev, vq, free_head);
 114
 115     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 116     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 117
 118     qvirtio_wait_used_elem(dev, vq, free_head, NULL, QVIRTIO_NET_TIMEOUT_US);
 119     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 120     g_assert_cmpstr(buffer, ==, "TEST");
 121
 122     guest_free(alloc, req_addr);
 123 }
 124
 125 static void tx_test(QVirtioDevice *dev,
 126                     QGuestAllocator *alloc, QVirtQueue *vq,
 127                     int socket)
 128 {
 129     uint64_t req_addr;
 130     uint32_t free_head;
 131     uint32_t len;
 132     char buffer[64];
 133     int ret;
 134
 135     req_addr = guest_alloc(alloc, 64);
 136     memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);
 137
 138     free_head = qvirtqueue_add(vq, req_addr, 64, false, false);
 139     qvirtqueue_kick(dev, vq, free_head);
 140
 141     qvirtio_wait_used_elem(dev, vq, free_head, NULL, QVIRTIO_NET_TIMEOUT_US);
 142     guest_free(alloc, req_addr);
 143
 144     ret = qemu_recv(socket, &len, sizeof(len), 0);
 145     g_assert_cmpint(ret, ==, sizeof(len));
 146     len = ntohl(len);
 147
 148     ret = qemu_recv(socket, buffer, len, 0);
 149     g_assert_cmpstr(buffer, ==, "TEST");
 150 }
 151
 152 static void rx_stop_cont_test(QVirtioDevice *dev,
 153                               QGuestAllocator *alloc, QVirtQueue *vq,
 154                               int socket)
 155 {
 156     uint64_t req_addr;
 157     uint32_t free_head;
 158     char test[] = "TEST";
 159     char buffer[64];
 160     int len = htonl(sizeof(test));
 161     QDict *rsp;
 162     struct iovec iov[] = {
 163         {
 164             .iov_base = &len,
 165             .iov_len = sizeof(len),
 166         }, {
 167             .iov_base = test,
 168             .iov_len = sizeof(test),
 169         },
 170     };
 171     int ret;
 172
 173     req_addr = guest_alloc(alloc, 64);
 174
 175     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 176     qvirtqueue_kick(dev, vq, free_head);
 177
 178     rsp = qmp("{ 'execute' : 'stop'}");
 179     qobject_unref(rsp);
 180
 181     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 182     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 183
 184     /* We could check the status, but this command is more importantly to
 185      * ensure the packet data gets queued in QEMU, before we do 'cont'.
 186      */
 187     rsp = qmp("{ 'execute' : 'query-status'}");
 188     qobject_unref(rsp);
 189     rsp = qmp("{ 'execute' : 'cont'}");
 190     qobject_unref(rsp);
 191
 192     qvirtio_wait_used_elem(dev, vq, free_head, NULL, QVIRTIO_NET_TIMEOUT_US);
 193     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 194     g_assert_cmpstr(buffer, ==, "TEST");
 195
 196     guest_free(alloc, req_addr);
 197 }
 198
 199 static void send_recv_test(QVirtioDevice *dev,
 200                            QGuestAllocator *alloc, QVirtQueue *rvq,
 201                            QVirtQueue *tvq, int socket)
 202 {
 203     rx_test(dev, alloc, rvq, socket);
 204     tx_test(dev, alloc, tvq, socket);
 205 }
 206
 207 static void stop_cont_test(QVirtioDevice *dev,
 208                            QGuestAllocator *alloc, QVirtQueue *rvq,
 209                            QVirtQueue *tvq, int socket)
 210 {
 211     rx_stop_cont_test(dev, alloc, rvq, socket);
 212 }
 213
 214 static void pci_basic(gconstpointer data)
 215 {
 216     QVirtioPCIDevice *dev;
 217     QOSState *qs;
 218     QVirtQueuePCI *tx, *rx;
 219     void (*func) (QVirtioDevice *dev,
 220                   QGuestAllocator *alloc,
 221                   QVirtQueue *rvq,
 222                   QVirtQueue *tvq,
 223                   int socket) = data;
 224     int sv[2], ret;
 225
 226     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
 227     g_assert_cmpint(ret, !=, -1);
 228
 229     qs = pci_test_start("-netdev socket,fd=%d,id=hs0 -device "
 230                         "virtio-net-pci,netdev=hs0", sv[1]);
 231     dev = virtio_net_pci_init(qs->pcibus, PCI_SLOT);
 232
 233     rx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 0);
 234     tx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 1);
 235
 236     driver_init(&dev->vdev);
 237     func(&dev->vdev, qs->alloc, &rx->vq, &tx->vq, sv[0]);
 238
 239     /* End test */
 240     close(sv[0]);
 241     qvirtqueue_cleanup(dev->vdev.bus, &tx->vq, qs->alloc);
 242     qvirtqueue_cleanup(dev->vdev.bus, &rx->vq, qs->alloc);
 243     qvirtio_pci_device_disable(dev);
 244     g_free(dev->pdev);
 245     g_free(dev);
 246     qtest_shutdown(qs);
 247 }
 248
 249 static void large_tx(gconstpointer data)
 250 {
 251     QVirtioPCIDevice *dev;
 252     QOSState *qs;
 253     QVirtQueuePCI *tx, *rx;
 254     QVirtQueue *vq;
 255     uint64_t req_addr;
 256     uint32_t free_head;
 257     size_t alloc_size = (size_t)data / 64;
 258     int i;
 259
 260     qs = pci_test_start("-netdev hubport,id=hp0,hubid=0 "
 261                         "-device virtio-net-pci,netdev=hp0");
 262     dev = virtio_net_pci_init(qs->pcibus, PCI_SLOT);
 263
 264     rx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 0);
 265     tx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 1);
 266
 267     driver_init(&dev->vdev);
 268     vq = &tx->vq;
 269
 270     /* Bypass the limitation by pointing several descriptors to a single
 271      * smaller area */
 272     req_addr = guest_alloc(qs->alloc, alloc_size);
 273     free_head = qvirtqueue_add(vq, req_addr, alloc_size, false, true);
 274
 275     for (i = 0; i < 64; i++) {
 276         qvirtqueue_add(vq, req_addr, alloc_size, false, i != 63);
 277     }
 278     qvirtqueue_kick(&dev->vdev, vq, free_head);
 279
 280     qvirtio_wait_used_elem(&dev->vdev, vq, free_head, NULL,
 281                            QVIRTIO_NET_TIMEOUT_US);
 282
 283     qvirtqueue_cleanup(dev->vdev.bus, &tx->vq, qs->alloc);
 284     qvirtqueue_cleanup(dev->vdev.bus, &rx->vq, qs->alloc);
 285     qvirtio_pci_device_disable(dev);
 286     g_free(dev->pdev);
 287     g_free(dev);
 288     qtest_shutdown(qs);
 289 }
 290 #endif
 291
 292 static void hotplug(void)
 293 {
 294     const char *arch = qtest_get_arch();
 295
 296     qtest_start("-device virtio-net-pci");
 297
 298     qtest_qmp_device_add("virtio-net-pci", "net1",
 299                          "{'addr': %s}", stringify(PCI_SLOT_HP));
 300
 301     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 302         qpci_unplug_acpi_device_test("net1", PCI_SLOT_HP);
 303     }
 304
 305     test_end();
 306 }
 307
 308 int main(int argc, char **argv)
 309 {
 310     g_test_init(&argc, &argv, NULL);
 311 #ifndef _WIN32
 312     qtest_add_data_func("/virtio/net/pci/basic", send_recv_test, pci_basic);
 313     qtest_add_data_func("/virtio/net/pci/rx_stop_cont",
 314                         stop_cont_test, pci_basic);
 315     qtest_add_data_func("/virtio/net/pci/large_tx_uint_max",
 316                         (gconstpointer)UINT_MAX, large_tx);
 317     qtest_add_data_func("/virtio/net/pci/large_tx_net_bufsize",
 318                         (gconstpointer)NET_BUFSIZE, large_tx);
 319 #endif
 320     qtest_add_func("/virtio/net/pci/hotplug", hotplug);
 321
 322     return g_test_run();
 323 }