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 <glib.h>
  12 #include "libqtest.h"
  13 #include "qemu-common.h"
  14 #include "qemu/sockets.h"
  15 #include "qemu/iov.h"
  16 #include "libqos/pci-pc.h"
  17 #include "libqos/virtio.h"
  18 #include "libqos/virtio-pci.h"
  19 #include "libqos/malloc.h"
  20 #include "libqos/malloc-pc.h"
  21 #include "libqos/malloc-generic.h"
  22 #include "qemu/bswap.h"
  23 #include "hw/virtio/virtio-net.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, QVIRTIO_NET_DEVICE_ID);
  44     g_assert(dev != NULL);
  45     g_assert_cmphex(dev->vdev.device_type, ==, QVIRTIO_NET_DEVICE_ID);
  46
  47     qvirtio_pci_device_enable(dev);
  48     qvirtio_reset(&qvirtio_pci, &dev->vdev);
  49     qvirtio_set_acknowledge(&qvirtio_pci, &dev->vdev);
  50     qvirtio_set_driver(&qvirtio_pci, &dev->vdev);
  51
  52     return dev;
  53 }
  54
  55 static QPCIBus *pci_test_start(int socket)
  56 {
  57     char *cmdline;
  58
  59     cmdline = g_strdup_printf("-netdev socket,fd=%d,id=hs0 -device "
  60                               "virtio-net-pci,netdev=hs0", socket);
  61     qtest_start(cmdline);
  62     g_free(cmdline);
  63
  64     return qpci_init_pc();
  65 }
  66
  67 static void driver_init(const QVirtioBus *bus, QVirtioDevice *dev)
  68 {
  69     uint32_t features;
  70
  71     features = qvirtio_get_features(bus, dev);
  72     features = features & ~(QVIRTIO_F_BAD_FEATURE |
  73                             QVIRTIO_F_RING_INDIRECT_DESC |
  74                             QVIRTIO_F_RING_EVENT_IDX);
  75     qvirtio_set_features(bus, dev, features);
  76
  77     qvirtio_set_driver_ok(bus, dev);
  78 }
  79
  80 static void rx_test(const QVirtioBus *bus, QVirtioDevice *dev,
  81                     QGuestAllocator *alloc, QVirtQueue *vq,
  82                     int socket)
  83 {
  84     uint64_t req_addr;
  85     uint32_t free_head;
  86     char test[] = "TEST";
  87     char buffer[64];
  88     int len = htonl(sizeof(test));
  89     struct iovec iov[] = {
  90         {
  91             .iov_base = &len,
  92             .iov_len = sizeof(len),
  93         }, {
  94             .iov_base = test,
  95             .iov_len = sizeof(test),
  96         },
  97     };
  98     int ret;
  99
 100     req_addr = guest_alloc(alloc, 64);
 101
 102     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 103     qvirtqueue_kick(bus, dev, vq, free_head);
 104
 105     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 106     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 107
 108     qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
 109     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 110     g_assert_cmpstr(buffer, ==, "TEST");
 111
 112     guest_free(alloc, req_addr);
 113 }
 114
 115 static void tx_test(const QVirtioBus *bus, QVirtioDevice *dev,
 116                     QGuestAllocator *alloc, QVirtQueue *vq,
 117                     int socket)
 118 {
 119     uint64_t req_addr;
 120     uint32_t free_head;
 121     uint32_t len;
 122     char buffer[64];
 123     int ret;
 124
 125     req_addr = guest_alloc(alloc, 64);
 126     memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);
 127
 128     free_head = qvirtqueue_add(vq, req_addr, 64, false, false);
 129     qvirtqueue_kick(bus, dev, vq, free_head);
 130
 131     qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
 132     guest_free(alloc, req_addr);
 133
 134     ret = qemu_recv(socket, &len, sizeof(len), 0);
 135     g_assert_cmpint(ret, ==, sizeof(len));
 136     len = ntohl(len);
 137
 138     ret = qemu_recv(socket, buffer, len, 0);
 139     g_assert_cmpstr(buffer, ==, "TEST");
 140 }
 141
 142 static void rx_stop_cont_test(const QVirtioBus *bus, QVirtioDevice *dev,
 143                               QGuestAllocator *alloc, QVirtQueue *vq,
 144                               int socket)
 145 {
 146     uint64_t req_addr;
 147     uint32_t free_head;
 148     char test[] = "TEST";
 149     char buffer[64];
 150     int len = htonl(sizeof(test));
 151     struct iovec iov[] = {
 152         {
 153             .iov_base = &len,
 154             .iov_len = sizeof(len),
 155         }, {
 156             .iov_base = test,
 157             .iov_len = sizeof(test),
 158         },
 159     };
 160     int ret;
 161
 162     req_addr = guest_alloc(alloc, 64);
 163
 164     free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
 165     qvirtqueue_kick(bus, dev, vq, free_head);
 166
 167     qmp("{ 'execute' : 'stop'}");
 168
 169     ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
 170     g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
 171
 172     /* We could check the status, but this command is more importantly to
 173      * ensure the packet data gets queued in QEMU, before we do 'cont'.
 174      */
 175     qmp("{ 'execute' : 'query-status'}");
 176     qmp("{ 'execute' : 'cont'}");
 177
 178     qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
 179     memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
 180     g_assert_cmpstr(buffer, ==, "TEST");
 181
 182     guest_free(alloc, req_addr);
 183 }
 184
 185 static void send_recv_test(const QVirtioBus *bus, QVirtioDevice *dev,
 186                            QGuestAllocator *alloc, QVirtQueue *rvq,
 187                            QVirtQueue *tvq, int socket)
 188 {
 189     rx_test(bus, dev, alloc, rvq, socket);
 190     tx_test(bus, dev, alloc, tvq, socket);
 191 }
 192
 193 static void stop_cont_test(const QVirtioBus *bus, QVirtioDevice *dev,
 194                            QGuestAllocator *alloc, QVirtQueue *rvq,
 195                            QVirtQueue *tvq, int socket)
 196 {
 197     rx_stop_cont_test(bus, dev, alloc, rvq, socket);
 198 }
 199
 200 static void pci_basic(gconstpointer data)
 201 {
 202     QVirtioPCIDevice *dev;
 203     QPCIBus *bus;
 204     QVirtQueuePCI *tx, *rx;
 205     QGuestAllocator *alloc;
 206     void (*func) (const QVirtioBus *bus,
 207                   QVirtioDevice *dev,
 208                   QGuestAllocator *alloc,
 209                   QVirtQueue *rvq,
 210                   QVirtQueue *tvq,
 211                   int socket) = data;
 212     int sv[2], ret;
 213
 214     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
 215     g_assert_cmpint(ret, !=, -1);
 216
 217     bus = pci_test_start(sv[1]);
 218     dev = virtio_net_pci_init(bus, PCI_SLOT);
 219
 220     alloc = pc_alloc_init();
 221     rx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
 222                                            alloc, 0);
 223     tx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
 224                                            alloc, 1);
 225
 226     driver_init(&qvirtio_pci, &dev->vdev);
 227     func(&qvirtio_pci, &dev->vdev, alloc, &rx->vq, &tx->vq, sv[0]);
 228
 229     /* End test */
 230     close(sv[0]);
 231     guest_free(alloc, tx->vq.desc);
 232     pc_alloc_uninit(alloc);
 233     qvirtio_pci_device_disable(dev);
 234     g_free(dev);
 235     qpci_free_pc(bus);
 236     test_end();
 237 }
 238 #endif
 239
 240 static void hotplug(void)
 241 {
 242     qtest_start("-device virtio-net-pci");
 243
 244     qpci_plug_device_test("virtio-net-pci", "net1", PCI_SLOT_HP, NULL);
 245     qpci_unplug_acpi_device_test("net1", PCI_SLOT_HP);
 246
 247     test_end();
 248 }
 249
 250 int main(int argc, char **argv)
 251 {
 252     int ret;
 253
 254     g_test_init(&argc, &argv, NULL);
 255 #ifndef _WIN32
 256     qtest_add_data_func("/virtio/net/pci/basic", send_recv_test, pci_basic);
 257     qtest_add_data_func("/virtio/net/pci/rx_stop_cont",
 258                         stop_cont_test, pci_basic);
 259 #endif
 260     qtest_add_func("/virtio/net/pci/hotplug", hotplug);
 261
 262     ret = g_test_run();
 263
 264     return ret;
 265 }