From: Florin Coras <fcoras@cisco.com>
Date: Wed, 26 Jul 2023 18:27:33 +0000 (-0700)
Subject: vcl: allow rx of zero length dgrams
X-Git-Tag: v24.02-rc0~114
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=0eff4e722c8565aebf8f004a30c73a64b0b921e4;p=vpp.git

vcl: allow rx of zero length dgrams

Type: fix

Change-Id: I438ef488357456e9415e51a17355e9eba8518808
Signed-off-by: Florin Coras <fcoras@cisco.com>
---

diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c
index 059acdf97eb..4af79e9ebb0 100644
--- a/src/vcl/vcl_private.c
+++ b/src/vcl/vcl_private.c
@@ -341,7 +341,8 @@ vcl_session_read_ready (vcl_session_t * s)
 	  if (ph.data_length + SESSION_CONN_HDR_LEN > max_deq)
 	    return 0;
 
-	  return ph.data_length;
+	  /* Allow zero legth datagrams */
+	  return ph.data_length ? ph.data_length : 1;
 	}
 
       return svm_fifo_max_dequeue_cons (s->rx_fifo);