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