C++ (Cpp) tap_has_vnet_hdr Beispiele

Beispiel #1

Datei: vhost_net.c Projekt: EgoIncarnate/qemu-rr

struct vhost_net *vhost_net_init(VLANClientState *backend, int devfd)
{
    int r;
    struct vhost_net *net = qemu_malloc(sizeof *net);
    if (!backend) {
        fprintf(stderr, "vhost-net requires backend to be setup\n");
        goto fail;
    }
    r = vhost_net_get_fd(backend);
    if (r < 0) {
        goto fail;
    }
    net->vc = backend;
    net->dev.backend_features = tap_has_vnet_hdr(backend) ? 0 :
        (1 << VHOST_NET_F_VIRTIO_NET_HDR);
    net->backend = r;

    r = vhost_dev_init(&net->dev, devfd);
    if (r < 0) {
        goto fail;
    }
    if (~net->dev.features & net->dev.backend_features) {
        fprintf(stderr, "vhost lacks feature mask %" PRIu64 " for backend\n",
                (uint64_t)(~net->dev.features & net->dev.backend_features));
        vhost_dev_cleanup(&net->dev);
        goto fail;
    }

    /* Set sane init value. Override when guest acks. */
    vhost_net_ack_features(net, 0);
    return net;
fail:
    qemu_free(net);
    return NULL;
}

Beispiel #2

Datei: virtio-net.c Projekt: Jokymon/qemu

static void peer_test_vnet_hdr(VirtIONet *n)
{
    if (!n->nic->nc.peer)
        return;

    if (n->nic->nc.peer->info->type != NET_CLIENT_OPTIONS_KIND_TAP)
        return;

    n->has_vnet_hdr = tap_has_vnet_hdr(n->nic->nc.peer);
}

Beispiel #3

Datei: virtio-net.c Projekt: EgoIncarnate/qemu-rr

static int peer_has_vnet_hdr(VirtIONet *n)
{
    if (!n->nic->nc.peer)
        return 0;

    if (n->nic->nc.peer->info->type != NET_CLIENT_TYPE_TAP)
        return 0;

    n->has_vnet_hdr = tap_has_vnet_hdr(n->nic->nc.peer);

    return n->has_vnet_hdr;
}

Beispiel #4

Datei: vhost_net.c Projekt: 01org/KVMGT-qemu

struct vhost_net *vhost_net_init(NetClientState *backend, int devfd,
                                 bool force)
{
    int r;
    struct vhost_net *net = g_malloc(sizeof *net);
    if (!backend) {
        fprintf(stderr, "vhost-net requires backend to be setup\n");
        goto fail;
    }
    r = vhost_net_get_fd(backend);
    if (r < 0) {
        goto fail;
    }
    net->nc = backend;
    net->dev.backend_features = tap_has_vnet_hdr(backend) ? 0 :
        (1 << VHOST_NET_F_VIRTIO_NET_HDR);
    net->backend = r;

    net->dev.nvqs = 2;
    net->dev.vqs = net->vqs;

    r = vhost_dev_init(&net->dev, devfd, "/dev/vhost-net", force);
    if (r < 0) {
        goto fail;
    }
    if (!tap_has_vnet_hdr_len(backend,
                              sizeof(struct virtio_net_hdr_mrg_rxbuf))) {
        net->dev.features &= ~(1 << VIRTIO_NET_F_MRG_RXBUF);
    }
    if (~net->dev.features & net->dev.backend_features) {
        fprintf(stderr, "vhost lacks feature mask %" PRIu64 " for backend\n",
                (uint64_t)(~net->dev.features & net->dev.backend_features));
        vhost_dev_cleanup(&net->dev);
        goto fail;
    }

    /* Set sane init value. Override when guest acks. */
    vhost_net_ack_features(net, 0);
    return net;
fail:
    g_free(net);
    return NULL;
}