-static void
-client_send_cut_through (udp_echo_main_t * utm, app_session_t * session)
-{
- int i;
- u8 *test_data = 0;
- u64 bytes_received = 0, bytes_sent = 0;
- i32 bytes_to_read;
- int rv;
- f64 before, after, delta, bytes_per_second;
- svm_fifo_t *rx_fifo, *tx_fifo;
- int buffer_offset, bytes_to_send = 0;
-
- /*
- * Prepare test data
- */
- vec_validate (test_data, 64 * 1024 - 1);
- for (i = 0; i < vec_len (test_data); i++)
- test_data[i] = i & 0xff;
-
- rx_fifo = session->rx_fifo;
- tx_fifo = session->tx_fifo;
-
- before = clib_time_now (&utm->clib_time);
-
- vec_validate (utm->rx_buf, vec_len (test_data) - 1);
-
- for (i = 0; i < NITER; i++)
- {
- bytes_to_send = vec_len (test_data);
- buffer_offset = 0;
- while (bytes_to_send > 0)
- {
- rv = svm_fifo_enqueue_nowait (tx_fifo, bytes_to_send,
- test_data + buffer_offset);
-
- if (rv > 0)
- {
- bytes_to_send -= rv;
- buffer_offset += rv;
- bytes_sent += rv;
- }
- }
-
- bytes_to_read = svm_fifo_max_dequeue (rx_fifo);
- bytes_to_read = vec_len (utm->rx_buf) > bytes_to_read ?
- bytes_to_read : vec_len (utm->rx_buf);
-
- buffer_offset = 0;
- while (bytes_to_read > 0)
- {
- rv = svm_fifo_dequeue_nowait (rx_fifo,
- bytes_to_read,
- utm->rx_buf + buffer_offset);
- if (rv > 0)
- {
- bytes_to_read -= rv;
- buffer_offset += rv;
- bytes_received += rv;
- }
- }
- }
- while (bytes_received < bytes_sent)
- {
- rv =
- svm_fifo_dequeue_nowait (rx_fifo, vec_len (utm->rx_buf), utm->rx_buf);
- if (rv > 0)
- {
-#if CLIB_DEBUG > 0
- int j;
- for (j = 0; j < rv; j++)
- {
- if (utm->rx_buf[j] != ((bytes_received + j) & 0xff))
- {
- clib_warning ("error at byte %lld, 0x%x not 0x%x",
- bytes_received + j,
- utm->rx_buf[j],
- ((bytes_received + j) & 0xff));
- }
- }
-#endif
- bytes_received += (u64) rv;
- }
- }
-
- after = clib_time_now (&utm->clib_time);
- delta = after - before;
- bytes_per_second = 0.0;
-
- if (delta > 0.0)
- bytes_per_second = (f64) bytes_received / delta;
-
- fformat (stdout,
- "Done: %lld recv bytes in %.2f seconds, %.2f bytes/sec...\n\n",
- bytes_received, delta, bytes_per_second);
- fformat (stdout,
- "Done: %lld sent bytes in %.2f seconds, %.2f bytes/sec...\n\n",
- bytes_sent, delta, bytes_per_second);
- fformat (stdout,
- "client -> server -> client round trip: %.2f Gbit/sec \n\n",
- (bytes_per_second * 8.0) / 1e9);
-}
-