From a3c9458d233d35d2afdb866aaa602bebaabf2f59 Mon Sep 17 00:00:00 2001
From: Lev Stipakov <lev@openvpn.net>
Date: Wed, 22 Mar 2023 13:34:08 +0200
Subject: [PATCH] Fix '--inactive <time> 0' behavior for DCO

Make sure we exit if <bytes> is 0 (not set) and no traffic
was produced.

According to man page and non-DCO --inactive implementation,
we exit if amount of bytes produced is less than <bytes> specified.
DCO implementation will do off-by-ones, but we consider it as okay
since we don't want to complicate code to handle both bytes=0 and >0
cases.

Change-Id: I4c089e486728a43bfe42596787c00355838311da
Signed-off-by: Lev Stipakov <lev@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20230322113408.2057-1-lstipakov@gmail.com>
URL: https://www.mail-archive.com/search?l=mid&q=20230322113408.2057-1-lstipakov@gmail.com
Signed-off-by: Gert Doering <gert@greenie.muc.de>
(cherry picked from commit 6c64b46b15476351ca19f9a8f3cb8185aa2c7e07)
---
 src/openvpn/forward.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/openvpn/forward.c b/src/openvpn/forward.c
index 28a96f940..b3e0ba5d9 100644
--- a/src/openvpn/forward.c
+++ b/src/openvpn/forward.c
@@ -481,7 +481,7 @@ check_inactivity_timeout(struct context *c)
         int64_t tot_bytes = c->c2.tun_read_bytes + c->c2.tun_write_bytes;
         int64_t new_bytes = tot_bytes - c->c2.inactivity_bytes;
 
-        if (new_bytes >= c->options.inactivity_minimum_bytes)
+        if (new_bytes > c->options.inactivity_minimum_bytes)
         {
             c->c2.inactivity_bytes = tot_bytes;
             event_timeout_reset(&c->c2.inactivity_interval);
-- 
2.47.3