From e9b33fcbde7552c443acb957e0f1278636b78408 Mon Sep 17 00:00:00 2001
From: Florin Coras <fcoras@cisco.com>
Date: Fri, 4 Jun 2021 16:28:18 -0700
Subject: vcl: avoid multiple reads on peek

Only try once and return what was found.

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I50b1d26babf1b7431d36f6b7472a1fb01475bb35
(cherry picked from commit 233683180638d1c7f517b713722cbbeb3b4be86e)
---
 src/vcl/vppcom.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c
index ebc9e768b0c..0c6f6e6bbfd 100644
--- a/src/vcl/vppcom.c
+++ b/src/vcl/vppcom.c
@@ -1987,6 +1987,10 @@ read_again:
     rv = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
 
   ASSERT (rv >= 0);
+
+  if (peek)
+    return rv;
+
   n_read += rv;
 
   if (svm_fifo_is_empty_cons (rx_fifo))
-- 
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