Ejemplos de tap_set_vnet_hdr_len en C++ (Cpp)

Ejemplo n.º 1

Archivo: vhost_net.c Proyecto: 0bliv10n/s2e

void vhost_net_stop(struct vhost_net *net,
                    VirtIODevice *dev)
{
    struct vhost_vring_file file = { .fd = -1 };

    for (file.index = 0; file.index < net->dev.nvqs; ++file.index) {
        int r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
        assert(r >= 0);
    }
    net->vc->info->poll(net->vc, true);
    vhost_dev_stop(&net->dev, dev);
    if (net->dev.acked_features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
        tap_set_vnet_hdr_len(net->vc, sizeof(struct virtio_net_hdr));
    }
    vhost_dev_disable_notifiers(&net->dev, dev);
}

void vhost_net_cleanup(struct vhost_net *net)
{
    vhost_dev_cleanup(&net->dev);
    if (net->dev.acked_features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
        tap_set_vnet_hdr_len(net->vc, sizeof(struct virtio_net_hdr));
    }
    g_free(net);
}

Ejemplo n.º 2

Archivo: vhost_net.c Proyecto: 0bliv10n/s2e

int vhost_net_start(struct vhost_net *net,
                    VirtIODevice *dev)
{
    struct vhost_vring_file file = { };
    int r;

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

    r = vhost_dev_enable_notifiers(&net->dev, dev);
    if (r < 0) {
        goto fail_notifiers;
    }
    if (net->dev.acked_features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
        tap_set_vnet_hdr_len(net->vc,
                             sizeof(struct virtio_net_hdr_mrg_rxbuf));
    }

    r = vhost_dev_start(&net->dev, dev);
    if (r < 0) {
        goto fail_start;
    }

    net->vc->info->poll(net->vc, false);
    qemu_set_fd_handler(net->backend, NULL, NULL, NULL);
    file.fd = net->backend;
    for (file.index = 0; file.index < net->dev.nvqs; ++file.index) {
        r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
        if (r < 0) {
            r = -errno;
            goto fail;
        }
    }
    return 0;
fail:
    file.fd = -1;
    while (file.index-- > 0) {
        int r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
        assert(r >= 0);
    }
    net->vc->info->poll(net->vc, true);
    vhost_dev_stop(&net->dev, dev);
    if (net->dev.acked_features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
        tap_set_vnet_hdr_len(net->vc, sizeof(struct virtio_net_hdr));
    }
fail_start:
    vhost_dev_disable_notifiers(&net->dev, dev);
fail_notifiers:
    return r;
}

Ejemplo n.º 3

Archivo: virtio-net.c Proyecto: Jokymon/qemu

static void virtio_net_set_mrg_rx_bufs(VirtIONet *n, int mergeable_rx_bufs)
{
    n->mergeable_rx_bufs = mergeable_rx_bufs;

    n->guest_hdr_len = n->mergeable_rx_bufs ?
        sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr);

    if (peer_has_vnet_hdr(n) &&
        tap_has_vnet_hdr_len(n->nic->nc.peer, n->guest_hdr_len)) {
        tap_set_vnet_hdr_len(n->nic->nc.peer, n->guest_hdr_len);
        n->host_hdr_len = n->guest_hdr_len;
    }
}