From: Antonio Quartulli <antonio@openvpn.net>
Date: Wed, 13 Jun 2018 12:28:24 +0000 (+0800)
Subject: tun: get rid of tt->did_ifconfig member
X-Git-Tag: v2.5_beta1~474
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78c58cfb02c5ca543cc7e0962337003601483e39;p=thirdparty%2Fopenvpn.git

tun: get rid of tt->did_ifconfig member

tt->did_ifconfig is currently only read by the Linux platform, but
it is currently uselessly set also by every other system.

The Linux platform does not actually even need this member and can
directly rely on tt->did_ifconfig_setup.

For the reasons above, remove the tt->did_ifconfig at all and use
tt->did_ifconfig_setup where needed (close_tun() on Linux).

Signed-off-by: Antonio Quartulli <antonio@openvpn.net>

Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20180613122824.4207-4-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg17046.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
---

diff --git a/src/openvpn/tun.c b/src/openvpn/tun.c
index e008d99f4..d8b972d0b 100644
--- a/src/openvpn/tun.c
+++ b/src/openvpn/tun.c
@@ -987,7 +987,6 @@ do_ifconfig(struct tuntap *tt,
             argv_msg(M_INFO, &argv);
             openvpn_execve_check(&argv, es, S_FATAL, "Linux ip -6 addr add failed");
         }
-        tt->did_ifconfig = true;
 #else  /* ifdef ENABLE_IPROUTE */
         if (tun)
         {
@@ -1026,7 +1025,6 @@ do_ifconfig(struct tuntap *tt,
             argv_msg(M_INFO, &argv);
             openvpn_execve_check(&argv, es, S_FATAL, "Linux ifconfig inet6 failed");
         }
-        tt->did_ifconfig = true;
 
 #endif /*ENABLE_IPROUTE*/
 #elif defined(TARGET_ANDROID)
@@ -1186,8 +1184,6 @@ do_ifconfig(struct tuntap *tt,
             add_route(&r, tt, 0, NULL, es);
         }
 
-        tt->did_ifconfig = true;
-
 #elif defined(TARGET_OPENBSD)
 
         in_addr_t remote_end;           /* for "virtual" subnet topology */
@@ -1265,7 +1261,6 @@ do_ifconfig(struct tuntap *tt,
             /* and, hooray, we explicitely need to add a route... */
             add_route_connected_v6_net(tt, es);
         }
-        tt->did_ifconfig = true;
 
 #elif defined(TARGET_NETBSD)
 
@@ -1327,7 +1322,6 @@ do_ifconfig(struct tuntap *tt,
             /* and, hooray, we explicitely need to add a route... */
             add_route_connected_v6_net(tt, es);
         }
-        tt->did_ifconfig = true;
 
 #elif defined(TARGET_DARWIN)
         /*
@@ -1384,7 +1378,6 @@ do_ifconfig(struct tuntap *tt,
 
         argv_msg(M_INFO, &argv);
         openvpn_execve_check(&argv, es, S_FATAL, "Mac OS X ifconfig failed");
-        tt->did_ifconfig = true;
 
         /* Add a network route for the local tun interface */
         if (!tun && tt->topology == TOP_SUBNET)
@@ -1457,7 +1450,6 @@ do_ifconfig(struct tuntap *tt,
 
         argv_msg(M_INFO, &argv);
         openvpn_execve_check(&argv, es, S_FATAL, "FreeBSD ifconfig failed");
-        tt->did_ifconfig = true;
 
         /* Add a network route for the local tun interface */
         if (!tun && tt->topology == TOP_SUBNET)
@@ -1507,7 +1499,6 @@ do_ifconfig(struct tuntap *tt,
 
             argv_msg(M_INFO, &argv);
             openvpn_execve_check(&argv, aix_es, S_FATAL, "AIX ifconfig failed");
-            tt->did_ifconfig = true;
 
             if (do_ipv6)
             {
@@ -1545,7 +1536,6 @@ do_ifconfig(struct tuntap *tt,
 
                     break;
             }
-            tt->did_ifconfig = true;
         }
 
         if (do_ipv6)
@@ -2104,7 +2094,7 @@ close_tun(struct tuntap *tt)
 {
     ASSERT(tt);
 
-    if (tt->type != DEV_TYPE_NULL && tt->did_ifconfig)
+    if (tt->type != DEV_TYPE_NULL && tt->did_ifconfig_setup)
     {
         struct argv argv = argv_new();
         struct gc_arena gc = gc_new();
diff --git a/src/openvpn/tun.h b/src/openvpn/tun.h
index 6c57ad0d8..9495d6020 100644
--- a/src/openvpn/tun.h
+++ b/src/openvpn/tun.h
@@ -138,7 +138,6 @@ struct tuntap
 
     bool did_ifconfig_setup;
     bool did_ifconfig_ipv6_setup;
-    bool did_ifconfig;
 
     bool persistent_if;         /* if existed before, keep on program end */