Re: [Qemu-devel] [PATCH V2 1/2] tests: introduce basic pci test for virtio-net

[Jason Wang <jasowang@redhat.com>]

On 07/13/2015 04:49 PM, Fam Zheng wrote:
> On Mon, 07/13 14:04, Jason Wang wrote:
>> > Signed-off-by: Jason Wang <jasowang@redhat.com>
>> > ---
>> > Changes from V1:
>> > - replace the magic value 12 with a macro
>> > ---
>> >  tests/Makefile          |   2 +-
>> >  tests/virtio-net-test.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++--
>> >  2 files changed, 180 insertions(+), 8 deletions(-)
>> > 
>> > diff --git a/tests/Makefile b/tests/Makefile
>> > index 2c4b8dc..5805326 100644
>> > --- a/tests/Makefile
>> > +++ b/tests/Makefile
>> > @@ -381,7 +381,7 @@ tests/wdt_ib700-test$(EXESUF): tests/wdt_ib700-test.o
>> >  tests/tco-test$(EXESUF): tests/tco-test.o $(libqos-pc-obj-y)
>> >  tests/virtio-balloon-test$(EXESUF): tests/virtio-balloon-test.o
>> >  tests/virtio-blk-test$(EXESUF): tests/virtio-blk-test.o $(libqos-virtio-obj-y)
>> > -tests/virtio-net-test$(EXESUF): tests/virtio-net-test.o $(libqos-pc-obj-y)
>> > +tests/virtio-net-test$(EXESUF): tests/virtio-net-test.o $(libqos-pc-obj-y) $(libqos-virtio-obj-y)
>> >  tests/virtio-rng-test$(EXESUF): tests/virtio-rng-test.o $(libqos-pc-obj-y)
>> >  tests/virtio-scsi-test$(EXESUF): tests/virtio-scsi-test.o $(libqos-virtio-obj-y)
>> >  tests/virtio-9p-test$(EXESUF): tests/virtio-9p-test.o
>> > diff --git a/tests/virtio-net-test.c b/tests/virtio-net-test.c
>> > index ea7478c..b7d6f0b 100644
>> > --- a/tests/virtio-net-test.c
>> > +++ b/tests/virtio-net-test.c
>> > @@ -10,20 +10,193 @@
>> >  #include <glib.h>
>> >  #include <string.h>
>> >  #include "libqtest.h"
>> > +#include "qemu-common.h"
>> > +#include "qemu/sockets.h"
>> >  #include "qemu/osdep.h"
>> > -#include "libqos/pci.h"
>> > +#include "qemu/iov.h"
>> > +#include "libqos/pci-pc.h"
>> > +#include "libqos/virtio.h"
>> > +#include "libqos/virtio-pci.h"
>> > +#include "libqos/malloc.h"
>> > +#include "libqos/malloc-pc.h"
>> > +#include "libqos/malloc-generic.h"
>> > +#include "qemu/bswap.h"
>> > +#include "hw/virtio/virtio-net.h"
>> >  
>> >  #define PCI_SLOT_HP             0x06
>> > +#define PCI_SLOT                0x04
>> > +#define PCI_FN                  0x00
>> >  
>> > -/* Tests only initialization so far. TODO: Replace with functional tests */
>> > -static void pci_nop(void)
>> > +#define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
>> > +#define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)
>> > +
>> > +static void test_end(void)
>> > +{
>> > +    qtest_end();
>> > +}
>> > +
>> > +#ifndef _WIN32
>> > +
>> > +static QVirtioPCIDevice *virtio_net_pci_init(QPCIBus *bus, int slot)
>> > +{
>> > +    QVirtioPCIDevice *dev;
>> > +
>> > +    dev = qvirtio_pci_device_find(bus, QVIRTIO_NET_DEVICE_ID);
>> > +    g_assert(dev != NULL);
>> > +    g_assert_cmphex(dev->vdev.device_type, ==, QVIRTIO_NET_DEVICE_ID);
>> > +
>> > +    qvirtio_pci_device_enable(dev);
>> > +    qvirtio_reset(&qvirtio_pci, &dev->vdev);
>> > +    qvirtio_set_acknowledge(&qvirtio_pci, &dev->vdev);
>> > +    qvirtio_set_driver(&qvirtio_pci, &dev->vdev);
>> > +
>> > +    return dev;
>> > +}
>> > +
>> > +static QPCIBus *pci_test_start(int socket)
>> > +{
>> > +    char *cmdline;
>> > +
>> > +    cmdline = g_strdup_printf("-netdev socket,fd=%d,id=hs0 -device "
>> > +                              "virtio-net-pci,netdev=hs0", socket);
>> > +    qtest_start(cmdline);
>> > +    g_free(cmdline);
>> > +
>> > +    return qpci_init_pc();
>> > +}
>> > +
>> > +static void driver_init(const QVirtioBus *bus, QVirtioDevice *dev)
>> > +{
>> > +    uint32_t features;
>> > +
>> > +    features = qvirtio_get_features(bus, dev);
>> > +    features = features & ~(QVIRTIO_F_BAD_FEATURE |
>> > +                            QVIRTIO_F_RING_INDIRECT_DESC |
>> > +                            QVIRTIO_F_RING_EVENT_IDX);
>> > +    qvirtio_set_features(bus, dev, features);
>> > +
>> > +    qvirtio_set_driver_ok(bus, dev);
>> > +}
>> > +
>> > +static void rx_test(const QVirtioBus *bus, QVirtioDevice *dev,
>> > +                    QGuestAllocator *alloc, QVirtQueue *vq,
>> > +                    int socket)
>> >  {
>> > +    uint64_t req_addr;
>> > +    uint32_t free_head;
>> > +    char test[] = "TEST";
>> > +    char buffer[64];
>> > +    int len = htonl(sizeof(test));
>> > +    struct iovec iov[] = {
>> > +        {
>> > +            .iov_base = &len,
>> > +            .iov_len = sizeof(len),
>> > +        }, {
>> > +            .iov_base = test,
>> > +            .iov_len = sizeof(test),
>> > +        },
>> > +    };
>> > +    int ret;
>> > +
>> > +    req_addr = guest_alloc(alloc, 64);
>> > +
>> > +    free_head = qvirtqueue_add(vq, req_addr, 64, true, false);
>> > +    qvirtqueue_kick(bus, dev, vq, free_head);
>> > +
>> > +    ret = iov_send(socket, iov, 2, 0, sizeof(len) + sizeof(test));
>> > +    g_assert_cmpint(ret, ==, sizeof(test) + sizeof(len));
>> > +
>> > +    qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
>> > +    memread(req_addr + VNET_HDR_SIZE, buffer, sizeof(test));
>> > +    g_assert_cmpstr(buffer, ==, "TEST");
>> > +
>> > +    guest_free(alloc, req_addr);
>> >  }
>> >  
>> > +static void tx_test(const QVirtioBus *bus, QVirtioDevice *dev,
>> > +                    QGuestAllocator *alloc, QVirtQueue *vq,
>> > +                    int socket)
>> > +{
>> > +    uint64_t req_addr;
>> > +    uint32_t free_head;
>> > +    uint32_t len;
>> > +    char buffer[64];
>> > +    int ret;
>> > +
>> > +    req_addr = guest_alloc(alloc, 64);
>> > +    memwrite(req_addr + VNET_HDR_SIZE, "TEST", 4);
>> > +
>> > +    free_head = qvirtqueue_add(vq, req_addr, 64, false, false);
>> > +    qvirtqueue_kick(bus, dev, vq, free_head);
>> > +
>> > +    qvirtio_wait_queue_isr(bus, dev, vq, QVIRTIO_NET_TIMEOUT_US);
>> > +    guest_free(alloc, req_addr);
>> > +
>> > +    ret = qemu_recv(socket, &len, sizeof(len), 0);
>> > +    g_assert_cmpint(ret, ==, sizeof(len));
>> > +    len = ntohl(len);
>> > +
>> > +    ret = qemu_recv(socket, buffer, len, 0);
>> > +    g_assert_cmpstr(buffer, ==, "TEST");
>> > +}
>> > +
>> > +static void send_recv_test(const QVirtioBus *bus, QVirtioDevice *dev,
>> > +                           QGuestAllocator *alloc, QVirtQueue *rvq,
>> > +                           QVirtQueue *tvq, int socket)
>> > +{
>> > +    rx_test(bus, dev, alloc, rvq, socket);
>> > +    tx_test(bus, dev, alloc, tvq, socket);
>> > +}
>> > +
>> > +static void pci_basic(gconstpointer data)
>> > +{
>> > +    QVirtioPCIDevice *dev;
>> > +    QPCIBus *bus;
>> > +    QVirtQueuePCI *tx, *rx;
>> > +    QGuestAllocator *alloc;
>> > +    void (*func) (const QVirtioBus *bus,
>> > +                  QVirtioDevice *dev,
>> > +                  QGuestAllocator *alloc,
>> > +                  QVirtQueue *rvq,
>> > +                  QVirtQueue *tvq,
>> > +                  int socket) = data;
>> > +    int sv[2], ret;
>> > +
>> > +    ret = socketpair(PF_UNIX, SOCK_STREAM, 0, sv);
>> > +    g_assert_cmpint(ret, !=, -1);
>> > +
>> > +    bus = pci_test_start(sv[1]);
>> > +    dev = virtio_net_pci_init(bus, PCI_SLOT);
>> > +
>> > +    alloc = pc_alloc_init();
>> > +    rx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
>> > +                                           alloc, 0);
>> > +    tx = (QVirtQueuePCI *)qvirtqueue_setup(&qvirtio_pci, &dev->vdev,
>> > +                                           alloc, 1);
>> > +
>> > +    driver_init(&qvirtio_pci, &dev->vdev);
>> > +    func(&qvirtio_pci, &dev->vdev, alloc, &rx->vq, &tx->vq, sv[0]);
>> > +
>> > +    /* End test */
>> > +    close(sv[0]);
>> > +    guest_free(alloc, tx->vq.desc);
>> > +    pc_alloc_uninit(alloc);
>> > +    qvirtio_pci_device_disable(dev);
>> > +    g_free(dev);
>> > +    qpci_free_pc(bus);
>> > +    test_end();
>> > +}
>> > +#endif
>> > +
>> >  static void hotplug(void)
>> >  {
>> > +    qtest_start("-device virtio-net-pci");
>> > +
>> >      qpci_plug_device_test("virtio-net-pci", "net1", PCI_SLOT_HP, NULL);
>> >      qpci_unplug_acpi_device_test("net1", PCI_SLOT_HP);
>> > +    qtest_start("-device virtio-net-pci");
> What does this qtest_start do?
>

Meaningless, will remove this.

Thanks