Пример #1
0
static ssize_t dump_receive(NetClientState *nc, const uint8_t *buf, size_t size)
{
    DumpState *s = DO_UPCAST(DumpState, nc, nc);
    struct pcap_sf_pkthdr hdr;
    int64_t ts;
    int caplen;

    /* Early return in case of previous error. */
    if (s->fd < 0) {
        return size;
    }

    ts = qemu_clock_get_us(QEMU_CLOCK_VIRTUAL);
    caplen = size > s->pcap_caplen ? s->pcap_caplen : size;

    hdr.ts.tv_sec = ts / 1000000 + s->start_ts;
    hdr.ts.tv_usec = ts % 1000000;
    hdr.caplen = caplen;
    hdr.len = size;
    if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
        write(s->fd, buf, caplen) != caplen) {
        qemu_log("-net dump write error - stop dump\n");
        close(s->fd);
        s->fd = -1;
    }

    return size;
}
Пример #2
0
Файл: dump.c Проект: jjykh/qemu
static ssize_t dump_receive_iov(DumpState *s, const struct iovec *iov, int cnt)
{
    struct pcap_sf_pkthdr hdr;
    int64_t ts;
    int caplen;
    size_t size = iov_size(iov, cnt);
    struct iovec dumpiov[cnt + 1];

    /* Early return in case of previous error. */
    if (s->fd < 0) {
        return size;
    }

    ts = qemu_clock_get_us(QEMU_CLOCK_VIRTUAL);
    caplen = size > s->pcap_caplen ? s->pcap_caplen : size;

    hdr.ts.tv_sec = ts / 1000000 + s->start_ts;
    hdr.ts.tv_usec = ts % 1000000;
    hdr.caplen = caplen;
    hdr.len = size;

    dumpiov[0].iov_base = &hdr;
    dumpiov[0].iov_len = sizeof(hdr);
    cnt = iov_copy(&dumpiov[1], cnt, iov, cnt, 0, caplen);

    if (writev(s->fd, dumpiov, cnt + 1) != sizeof(hdr) + caplen) {
        error_report("network dump write error - stopping dump");
        close(s->fd);
        s->fd = -1;
    }

    return size;
}
Пример #3
0
static void filter_buffer_setup_timer(NetFilterState *nf)
{
    FilterBufferState *s = FILTER_BUFFER(nf);

    if (s->interval) {
        timer_init_us(&s->release_timer, QEMU_CLOCK_VIRTUAL,
                      filter_buffer_release_timer, nf);
        /* Timer armed to fire in s->interval microseconds. */
        timer_mod(&s->release_timer,
                  qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + s->interval);
    }
}
Пример #4
0
static target_ulong h_add_logical_lan_buffer(PowerPCCPU *cpu,
                                             sPAPRMachineState *spapr,
                                             target_ulong opcode,
                                             target_ulong *args)
{
    target_ulong reg = args[0];
    target_ulong buf = args[1];
    VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
    target_long ret;

    trace_spapr_vlan_h_add_logical_lan_buffer(reg, buf);

    if (!sdev) {
        hcall_dprintf("Bad device\n");
        return H_PARAMETER;
    }

    if ((check_bd(dev, buf, 4) < 0)
        || (VLAN_BD_LEN(buf) < 16)) {
        hcall_dprintf("Bad buffer enqueued\n");
        return H_PARAMETER;
    }

    if (!dev->isopen) {
        return H_RESOURCE;
    }

    if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) {
        ret = spapr_vlan_add_rxbuf_to_pool(dev, buf);
    } else {
        ret = spapr_vlan_add_rxbuf_to_page(dev, buf);
    }
    if (ret) {
        return ret;
    }

    dev->rx_bufs++;

    /*
     * Give guest some more time to add additional RX buffers before we
     * flush the receive queue, so that e.g. fragmented IP packets can
     * be passed to the guest in one go later (instead of passing single
     * fragments if there is only one receive buffer available).
     */
    timer_mod(dev->rxp_timer, qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 500);

    return H_SUCCESS;
}
Пример #5
0
static void filter_buffer_release_timer(void *opaque)
{
    NetFilterState *nf = opaque;
    FilterBufferState *s = FILTER_BUFFER(nf);

    /*
     * Note: filter_buffer_flush() drops packets that can't be sent
     * TODO: We should leave them queued.  But currently there's no way
     * for the next filter or receiver to notify us that it can receive
     * more packets.
     */
    filter_buffer_flush(nf);
    /* Timer rearmed to fire again in s->interval microseconds. */
    timer_mod(&s->release_timer,
              qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + s->interval);
}