Remove the test for linux/if_tun.h.

It has been available for years on any decent Linux distribution.
Although linux/if_tun.h is now required to compile tinc,
you can still run it on systems which only support Ethertap.

diff --git a/configure.in b/configure.in
index 1ce3fb054ab1fba87a640e25cdb09e6f23fcd73c..181ff8f28195f6a5cafbf1375782373d36490715 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -142,12 +142,6 @@ AC_CACHE_SAVE
 
 dnl These are defined in files in m4/
 
-case $host_os in
-  *linux*)
-    tinc_TUNTAP
-  ;;
-esac
-
 tinc_OPENSSL
 tinc_ZLIB
 tinc_LZO

diff --git a/m4/tuntap.m4 b/m4/tuntap.m4
deleted file mode 100644 (file)
index 8c14a9b..0000000
--- a/m4/tuntap.m4
+++ /dev/null
@@ -1,44 +0,0 @@
-dnl Check to find out whether the running kernel has support for TUN/TAP
-
-AC_DEFUN([tinc_TUNTAP],
-[
-  AC_ARG_WITH(kernel,
-    AS_HELP_STRING([--with-kernel=DIR], [give the directory with kernel sources (default: /usr/src/linux)]),
-    kerneldir="$withval",
-    kerneldir="/usr/src/linux"
-  )
-  
-  AC_CACHE_CHECK([for linux/if_tun.h], tinc_cv_linux_if_tun_h,
-  [ 
-    AC_COMPILE_IFELSE(
-      AC_LANG_PROGRAM([
-        #include "$kerneldir/include/linux/if_tun.h"
-       int a = IFF_TAP;
-      ]),
-      [if_tun_h="\"$kerneldir/include/linux/if_tun.h\""],
-      [AC_COMPILE_IFELSE(
-        AC_LANG_PROGRAM([
-         #include <linux/if_tun.h>
-          int a = IFF_TAP;
-       ]),
-        [if_tun_h="default"],
-        [if_tun_h="no"]
-      )]
-    )
-  
-    if test $if_tun_h = no; then
-      tinc_cv_linux_if_tun_h=none
-    else
-      tinc_cv_linux_if_tun_h="$if_tun_h"
-    fi
-  ])
-  
-  if test $tinc_cv_linux_if_tun_h != none; then
-    AC_DEFINE(HAVE_TUNTAP, 1, [Universal tun/tap driver present])
-    if test $tinc_cv_linux_if_tun_h != default; then
-     AC_DEFINE_UNQUOTED(LINUX_IF_TUN_H, $tinc_cv_linux_if_tun_h, [Location of if_tun.h])
-    fi
-  fi
-  AC_SUBST(LINUX_IF_TUN_H)
-  AC_SUBST(HAVE_TUNTAP)
-])

diff --git a/src/linux/device.c b/src/linux/device.c
index c320e510877d370ef2c9b4074a7c7962fa6d0f08..3af8df09dc483c4cce869c9db0755d4d0555e639 100644 (file)
--- a/src/linux/device.c
+++ b/src/linux/device.c
@@ -22,16 +22,8 @@
 
 #include "system.h"
 
-#ifdef HAVE_TUNTAP
-#ifdef LINUX_IF_TUN_H
-#include LINUX_IF_TUN_H
-#else
 #include <linux/if_tun.h>
-#endif
 #define DEFAULT_DEVICE "/dev/net/tun"
-#else
-#define DEFAULT_DEVICE "/dev/tap0"
-#endif
 
 #include "conf.h"
 #include "logger.h"