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 #define PCI_FN                  0x00
  28
  29 #define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
  30 #define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)
  31
  32 static void test_end(void)
  33 {
  34     qtest_end();
  35 }
  36
  37 #ifndef _WIN32
  38
  39 static QVirtioPCIDevice *virtio_net_pci_init(QPCIBus *bus, int slot)
  40 {
  41     QVirtioPCIDevice *dev;
  42
  43     dev = qvirtio_pci_device_find(bus, VIRTIO_ID_NET);
  44     g_assert(dev != NULL);
  45     g_assert_cmphex(dev->vdev.device_type, ==, VIRTIO_ID_NET);
  46
  47     qvirtio_pci_device_enable(dev);
  48     qvirtio_reset(&dev->vdev);
  49     qvirtio_set_acknowledge(&dev->vdev);
  50     qvirtio_set_driver(&dev->vdev);
  51
  52     return dev;
  53 }
  54
  55 static QOSState *pci_test_start(int socket)
  56 {
  57     const char *arch = qtest_get_arch();
  58     const char *cmd = "-netdev socket,fd=%d,id=hs0 -device "
  59                       "virtio-net-pci,netdev=hs0";
  60
  61     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
  62         return qtest_pc_boot(cmd, socket);
  63     }
  64     if (strcmp(arch, "ppc64") == 0) {
  65         return qtest_spapr_boot(cmd, socket);
  66     }
  67     g_printerr("virtio-net tests are only available on x86 or ppc64\n");
  68     exit(EXIT_FAILURE);
  69 }
  70
  71 static void driver_init(QVirtioDevice *dev)
  72 {
  73     uint32_t features;
  74
  75     features = qvirtio_get_features(dev);
  76     features = features & ~(QVIRTIO_F_BAD_FEATURE |
  77                             (1u << VIRTIO_RING_F_INDIRECT_DESC) |
  78                             (1u << VIRTIO_RING_F_EVENT_IDX));
  79     qvirtio_set_features(dev, features);
  80
  81     qvirtio_set_driver_ok(dev);
  82 }
  83
  84 static void rx_test(QVirtioDevice *dev,
  85                     QGuestAllocator *alloc, QVirtQueue *vq,
  86                     int socket)
  87 {
  88     uint64_t req_addr;
  89     uint32_t free_head;
  90     char test[] = "TEST";
  91     char buffer[64];
  92     int len = htonl(sizeof(test));
  93     struct iovec iov[] = {
  94         {
  95             .iov_base = &len,
  96             .iov_len = sizeof(len),
  97         }, {
  98             .iov_base = test,
  99             .iov_len = sizeof(test),
 100         },
 101     };
 102     int ret;
 103
 104     req_addr = guest_alloc(alloc, 64);
 105
 106     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 107     qvirtqueue_kick(dev, vq, free_head);
 108
 109     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 110     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 111
 112     qvirtio_wait_used_elem(dev, vq, free_head, NULL, QVIRTIO_NET_TIMEOUT_US);
 113     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 114     g_assert_cmpstr(buffer, ==, "TEST");
 115
 116     guest_free(alloc, req_addr);
 117 }
 118
 119 static void tx_test(QVirtioDevice *dev,
 120                     QGuestAllocator *alloc, QVirtQueue *vq,
 121                     int socket)
 122 {
 123     uint64_t req_addr;
 124     uint32_t free_head;
 125     uint32_t len;
 126     char buffer[64];
 127     int ret;
 128
 129     req_addr = guest_alloc(alloc, 64);
 130     memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);
 131
 132     free_head = qvirtqueue_add(vq, req_addr, 64, false, false);
 133     qvirtqueue_kick(dev, vq, free_head);
 134
 135     qvirtio_wait_used_elem(dev, vq, free_head, NULL, QVIRTIO_NET_TIMEOUT_US);
 136     guest_free(alloc, req_addr);
 137
 138     ret = qemu_recv(socket, &len, sizeof(len), 0);
 139     g_assert_cmpint(ret, ==, sizeof(len));
 140     len = ntohl(len);
 141
 142     ret = qemu_recv(socket, buffer, len, 0);
 143     g_assert_cmpstr(buffer, ==, "TEST");
 144 }
 145
 146 static void rx_stop_cont_test(QVirtioDevice *dev,
 147                               QGuestAllocator *alloc, QVirtQueue *vq,
 148                               int socket)
 149 {
 150     uint64_t req_addr;
 151     uint32_t free_head;
 152     char test[] = "TEST";
 153     char buffer[64];
 154     int len = htonl(sizeof(test));
 155     QDict *rsp;
 156     struct iovec iov[] = {
 157         {
 158             .iov_base = &len,
 159             .iov_len = sizeof(len),
 160         }, {
 161             .iov_base = test,
 162             .iov_len = sizeof(test),
 163         },
 164     };
 165     int ret;
 166
 167     req_addr = guest_alloc(alloc, 64);
 168
 169     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 170     qvirtqueue_kick(dev, vq, free_head);
 171
 172     rsp = qmp("{ 'execute' : 'stop'}");
 173     QDECREF(rsp);
 174
 175     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 176     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 177
 178     /* We could check the status, but this command is more importantly to
 179      * ensure the packet data gets queued in QEMU, before we do 'cont'.
 180      */
 181     rsp = qmp("{ 'execute' : 'query-status'}");
 182     QDECREF(rsp);
 183     rsp = qmp("{ 'execute' : 'cont'}");
 184     QDECREF(rsp);
 185
 186     qvirtio_wait_used_elem(dev, vq, free_head, NULL, QVIRTIO_NET_TIMEOUT_US);
 187     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 188     g_assert_cmpstr(buffer, ==, "TEST");
 189
 190     guest_free(alloc, req_addr);
 191 }
 192
 193 static void send_recv_test(QVirtioDevice *dev,
 194                            QGuestAllocator *alloc, QVirtQueue *rvq,
 195                            QVirtQueue *tvq, int socket)
 196 {
 197     rx_test(dev, alloc, rvq, socket);
 198     tx_test(dev, alloc, tvq, socket);
 199 }
 200
 201 static void stop_cont_test(QVirtioDevice *dev,
 202                            QGuestAllocator *alloc, QVirtQueue *rvq,
 203                            QVirtQueue *tvq, int socket)
 204 {
 205     rx_stop_cont_test(dev, alloc, rvq, socket);
 206 }
 207
 208 static void pci_basic(gconstpointer data)
 209 {
 210     QVirtioPCIDevice *dev;
 211     QOSState *qs;
 212     QVirtQueuePCI *tx, *rx;
 213     void (*func) (QVirtioDevice *dev,
 214                   QGuestAllocator *alloc,
 215                   QVirtQueue *rvq,
 216                   QVirtQueue *tvq,
 217                   int socket) = data;
 218     int sv[2], ret;
 219
 220     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
 221     g_assert_cmpint(ret, !=, -1);
 222
 223     qs = pci_test_start(sv[1]);
 224     dev = virtio_net_pci_init(qs->pcibus, PCI_SLOT);
 225
 226     rx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 0);
 227     tx = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, qs->alloc, 1);
 228
 229     driver_init(&dev->vdev);
 230     func(&dev->vdev, qs->alloc, &rx->vq, &tx->vq, sv[0]);
 231
 232     /* End test */
 233     close(sv[0]);
 234     qvirtqueue_cleanup(dev->vdev.bus, &tx->vq, qs->alloc);
 235     qvirtqueue_cleanup(dev->vdev.bus, &rx->vq, qs->alloc);
 236     qvirtio_pci_device_disable(dev);
 237     g_free(dev->pdev);
 238     g_free(dev);
 239     qtest_shutdown(qs);
 240 }
 241 #endif
 242
 243 static void hotplug(void)
 244 {
 245     const char *arch = qtest_get_arch();
 246
 247     qtest_start("-device virtio-net-pci");
 248
 249     qpci_plug_device_test("virtio-net-pci", "net1", PCI_SLOT_HP, NULL);
 250
 251     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 252         qpci_unplug_acpi_device_test("net1", PCI_SLOT_HP);
 253     }
 254
 255     test_end();
 256 }
 257
 258 int main(int argc, char **argv)
 259 {
 260     g_test_init(&argc, &argv, NULL);
 261 #ifndef _WIN32
 262     qtest_add_data_func("/virtio/net/pci/basic", send_recv_test, pci_basic);
 263     qtest_add_data_func("/virtio/net/pci/rx_stop_cont",
 264                         stop_cont_test, pci_basic);
 265 #endif
 266     qtest_add_func("/virtio/net/pci/hotplug", hotplug);
 267
 268     return g_test_run();
 269 }