From: Matus Fabian <matfabia@cisco.com>
Date: Mon, 8 Sep 2025 23:07:33 +0000 (-0400)
Subject: hsa: proxy don't send tx event when fifo is empty
X-Git-Tag: v26.02-rc0~26
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F76%2F43676%2F4;p=vpp.git

hsa: proxy don't send tx event when fifo is empty

Type: improvement

Change-Id: Ic0a37de2c9f9e0b4e60cdd0740eb4ffcede23629
Signed-off-by: Matus Fabian <matfabia@cisco.com>
---

diff --git a/src/plugins/hs_apps/proxy.c b/src/plugins/hs_apps/proxy.c
index 896eb8c85e8..b3ea5307636 100644
--- a/src/plugins/hs_apps/proxy.c
+++ b/src/plugins/hs_apps/proxy.c
@@ -781,8 +781,9 @@ proxy_rx_callback (session_t *s)
   /*
    * Send event for active open tx fifo
    */
-  if (svm_fifo_set_event (ao_tx_fifo))
-    session_program_tx_io_evt (sc->pair.session_handle, SESSION_IO_EVT_TX);
+  if (svm_fifo_max_dequeue (ao_tx_fifo))
+    if (svm_fifo_set_event (ao_tx_fifo))
+      session_program_tx_io_evt (sc->pair.session_handle, SESSION_IO_EVT_TX);
 
   if (svm_fifo_max_enqueue (ao_tx_fifo) <= TCP_MSS)
     svm_fifo_add_want_deq_ntf (ao_tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
@@ -1162,8 +1163,9 @@ active_open_rx_callback (session_t * s)
   /*
    * Send event for server tx fifo
    */
-  if (svm_fifo_set_event (proxy_tx_fifo))
-    session_program_tx_io_evt (proxy_tx_fifo->vpp_sh, SESSION_IO_EVT_TX);
+  if (svm_fifo_max_dequeue (proxy_tx_fifo))
+    if (svm_fifo_set_event (proxy_tx_fifo))
+      session_program_tx_io_evt (proxy_tx_fifo->vpp_sh, SESSION_IO_EVT_TX);
 
   if (svm_fifo_max_enqueue (proxy_tx_fifo) <= TCP_MSS)
     svm_fifo_add_want_deq_ntf (proxy_tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);