From 99942d6f4c4dc91a2e5227a6915e789fd8c12331 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20L=C3=A9caille?= <flecaille@haproxy.com>
Date: Fri, 7 Jan 2022 14:32:31 +0100
Subject: [PATCH] MINOR: quic: Non-optimal use of a TX buffer

When full, after having reset the writer index, let's reuse the TX buffer in
any case.
---
 src/xprt_quic.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index f1adc19a8..836e83f4c 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -2450,9 +2450,9 @@ static int qc_prep_pkts(struct quic_conn *qc, struct qring *qr,
 
 	TRACE_ENTER(QUIC_EV_CONN_PHPKTS, qc);
 
+	total = 0;
  start:
 	dglen = 0;
-	total = 0;
 	padding = 0;
 	qel = &qc->els[tel];
 	cbuf = qr->cbuf;
@@ -2603,10 +2603,8 @@ static int qc_prep_pkts(struct quic_conn *qc, struct qring *qr,
 
 	    if (rd && rd <= cbuf->wr) {
 			cb_wr_reset(cbuf);
-			if (pos == spos) {
-				/* Reuse the same buffer if nothing was built. */
-				goto start;
-			}
+			/* Let's try to reuse this buffer */
+			goto start;
 		}
 	}