From: Felix Janda <felix.janda@posteo.de>
Date: Sat, 16 May 2015 13:59:50 +0000 (+0200)
Subject: Use OPENVPN_ETH_P_* so that <netinet/if_ether.h> is unecessary
X-Git-Tag: v2.4_alpha1~305
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ddb1f20a9ddbb94956c9f7b1115c89543d9b411a;p=thirdparty%2Fopenvpn.git

Use OPENVPN_ETH_P_* so that <netinet/if_ether.h> is unecessary

Fixes compilation error on linux with musl libc because of
conflicting ethhdr declarations in <netinet/if_ether.h> and
<linux/if_ether.h> which is included from <linux/if_tun.h>

Signed-off-by: Felix Janda <felix.janda@posteo.de>
Acked-by: Steffan Karger <steffan.karger@fox-it.com>
Message-Id: <20150516134604.GA2302@euler>
URL: http://article.gmane.org/gmane.network.openvpn.devel/9690
Signed-off-by: Gert Doering <gert@greenie.muc.de>
---

diff --git a/configure.ac b/configure.ac
index 913246881..5dccfbbc9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -461,7 +461,7 @@ SOCKET_INCLUDES="
 "
 
 AC_CHECK_HEADERS(
-	[net/if.h netinet/ip.h netinet/if_ether.h resolv.h sys/un.h net/if_utun.h sys/kern_control.h],
+	[net/if.h netinet/ip.h resolv.h sys/un.h net/if_utun.h sys/kern_control.h],
 	,
 	,
 	[[${SOCKET_INCLUDES}]]
diff --git a/src/openvpn/syshead.h b/src/openvpn/syshead.h
index b898bf2f3..cf29131f2 100644
--- a/src/openvpn/syshead.h
+++ b/src/openvpn/syshead.h
@@ -214,10 +214,6 @@
 
 #if defined(TARGET_LINUX) || defined (TARGET_ANDROID)
 
-#if defined(HAVE_NETINET_IF_ETHER_H)
-#include <netinet/if_ether.h>
-#endif
-
 #ifdef HAVE_LINUX_IF_TUN_H
 #include <linux/if_tun.h>
 #endif
diff --git a/src/openvpn/tun.c b/src/openvpn/tun.c
index 11a6d714c..ce3ed853b 100644
--- a/src/openvpn/tun.c
+++ b/src/openvpn/tun.c
@@ -1856,9 +1856,9 @@ write_tun (struct tuntap* tt, uint8_t *buf, int len)
       pi.flags = 0;
 
       if(iph->version == 6)
-	pi.proto = htons(ETH_P_IPV6);
+	pi.proto = htons(OPENVPN_ETH_P_IPV6);
       else
-	pi.proto = htons(ETH_P_IP);
+	pi.proto = htons(OPENVPN_ETH_P_IPV4);
 
       vect[0].iov_len = sizeof(pi);
       vect[0].iov_base = &pi;