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