From 45d573ab617136670223de5e271f8e7398007c1c Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Mon, 23 Mar 2015 19:04:49 +0100
Subject: Move ifname logic from peer to iface

---
 src/fastd.c |  2 +-
 src/fastd.h |  2 +-
 src/iface.c | 14 ++++++++++++--
 src/peer.c  | 15 ++-------------
 4 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/src/fastd.c b/src/fastd.c
index 5ac1967..0d4f577 100644
--- a/src/fastd.c
+++ b/src/fastd.c
@@ -527,7 +527,7 @@ static inline void init(int argc, char *argv[]) {
 	on_pre_up();
 
 	if (conf.mode == MODE_TAP || fastd_use_android_integration()) {
-		ctx.iface = fastd_iface_open(conf.ifname, NULL);
+		ctx.iface = fastd_iface_open(NULL);
 		if (!ctx.iface)
 			exit(1); /* An error message has already been printed by fastd_iface_open() */
 	}
diff --git a/src/fastd.h b/src/fastd.h
index dc4f04d..fa29bf0 100644
--- a/src/fastd.h
+++ b/src/fastd.h
@@ -371,7 +371,7 @@ bool fastd_android_protect_socket(int fd);
 
 void fastd_resolve_peer(fastd_peer_t *peer, fastd_remote_t *remote);
 
-fastd_iface_t * fastd_iface_open(const char *ifname, fastd_peer_t *peer);
+fastd_iface_t * fastd_iface_open(fastd_peer_t *peer);
 void fastd_iface_handle(fastd_iface_t *iface);
 void fastd_iface_write(fastd_iface_t *iface, fastd_buffer_t buffer);
 void fastd_iface_close(fastd_iface_t *iface);
diff --git a/src/iface.c b/src/iface.c
index d7caa30..6cad96d 100644
--- a/src/iface.c
+++ b/src/iface.c
@@ -33,7 +33,8 @@
    Management of the TUN/TAP interface
 */
 
-#include "fastd.h"
+#include "config.h"
+#include "peer.h"
 #include "poll.h"
 
 #include <net/if.h>
@@ -462,10 +463,19 @@ void fastd_iface_write(fastd_iface_t *iface, fastd_buffer_t buffer) {
 }
 
 /** Opens a new TUN/TAP interface, optionally associated with a specific peer */
-fastd_iface_t * fastd_iface_open(const char *ifname, fastd_peer_t *peer) {
+fastd_iface_t * fastd_iface_open(fastd_peer_t *peer) {
 	fastd_iface_t *iface = fastd_new(fastd_iface_t);
 	iface->peer = peer;
 
+	const char *ifname = conf.ifname;
+
+	if (peer) {
+		if (peer->ifname)
+			ifname = peer->ifname;
+		else if (!fastd_config_single_iface())
+			ifname = NULL;
+	}
+
 	pr_debug("initializing TUN/TAP device...");
 	open_iface(iface, ifname);
 
diff --git a/src/peer.c b/src/peer.c
index 979c074..79a4588 100644
--- a/src/peer.c
+++ b/src/peer.c
@@ -30,7 +30,6 @@
 */
 
 #include "peer.h"
-#include "config.h"
 #include "peer_hashtable.h"
 #include "poll.h"
 
@@ -411,12 +410,7 @@ static void setup_peer(fastd_peer_t *peer) {
 		peer->iface = ctx.iface;
 	}
 	else if (conf.iface_persist && !peer->iface && !fastd_peer_is_dynamic(peer)) {
-		const char *ifname = peer->ifname;
-
-		if (!ifname && fastd_config_single_iface())
-			ifname = conf.ifname;
-
-		peer->iface = fastd_iface_open(ifname, peer);
+		peer->iface = fastd_iface_open(peer);
 		if (peer->iface)
 			on_up(peer, true);
 		else if (!peer->config_source_dir)
@@ -879,12 +873,7 @@ bool fastd_peer_set_established(fastd_peer_t *peer) {
 		return true;
 
 	if (!peer->iface) {
-		const char *ifname = peer->ifname;
-
-		if (!ifname && fastd_config_single_iface())
-			ifname = conf.ifname;
-
-		peer->iface = fastd_iface_open(ifname, peer);
+		peer->iface = fastd_iface_open(peer);
 		if (peer->iface)
 			on_up(peer, false);
 		else
-- 
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