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-rw-r--r--src/vcl/vppcom.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c
index b5953872f81..e70aa001772 100644
--- a/src/vcl/vppcom.c
+++ b/src/vcl/vppcom.c
@@ -1530,6 +1530,14 @@ vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
if (svm_fifo_is_empty_cons (rx_fifo))
svm_fifo_unset_event (s->rx_fifo);
+ /* Cut-through sessions might request tx notifications on rx fifos */
+ if (PREDICT_FALSE (rx_fifo->want_tx_ntf))
+ {
+ app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo->master_session_index,
+ SESSION_IO_EVT_RX, SVM_Q_WAIT);
+ svm_fifo_reset_tx_ntf (s->rx_fifo);
+ }
+
VDBG (2, "session %u[0x%llx]: read %d bytes from (%p)", s->session_index,
s->vpp_handle, n_read, rx_fifo);