Backport from mainline:

    syscall:  Add ioctl consts from if_tun.h
    
    During the gccgo build define constants from
    some header files are processed by mksysinfo.sh and
    added to syscall.go.  In some cases the constants
    are based on macros which are not processed
    correctly by mksysinfo.sh.  This adds the support
    to generate the correct values for the TUN* constants
    from linux/if_tun.h.
    
    Fixes golang/go#11707
    
    Reviewed-on: https://go-review.googlesource.com/12491

    syscall:  Fix to libgo/mksysinfo.sh
    
    In a recent change to mksysinfo.sh, a space was missing on
    some lines which caused the libgo build to hang on some
    systems.  This corrects that problem.
    
    Fixes golang/go#11924
    
    Reviewed-on: https://go-review.googlesource.com/12835

    syscall:  RawSockaddr fix for ppc64, ppc64le
    
    The struct RawSockaddr contains a field Data which
    should be uint8 on ppc64 and ppc64le, but is declared
    as int8 in gccgo.  This change adds a two new files
    which contain the structure declaration for
    RawSockaddr, one with the correct types for for ppc64
    and ppc64le, and the other for non-ppc64 platforms.
    
    Fixes golang/go#11469
    
    Reviewed-on: https://go-review.googlesource.com/11946


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch@226595 138bc75d-0d04-0410-961f-82ee72b054a4

libgo/Makefile.am

@@ -1676,7 +1676,17 @@ endif # !LIBGO_IS_LINUX
 # Define socket sizes and types.
 if LIBGO_IS_LINUX
 syscall_socket_file = go/syscall/socket_linux.go epoll.go
+if LIBGO_IS_PPC64LE
+syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
 else
+if LIBGO_IS_PPC64
+syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
+else
+syscall_socket_type_file = go/syscall/socket_linux_type.go
+endif
+endif
+else
+syscall_socket_type_file =
 if LIBGO_IS_SOLARIS
 syscall_socket_file = go/syscall/socket_solaris.go
 else
@@ -1762,6 +1772,7 @@ go_base_syscall_files = \
 	$(syscall_size_file) \
 	$(syscall_socket_file) \
 	$(syscall_socket_os_file) \
+	$(syscall_socket_type_file) \
 	$(syscall_uname_file) \
 	$(syscall_netlink_file) \
 	$(syscall_lsf_file) \

libgo/Makefile.in

@@ -1848,6 +1848,10 @@ go_unicode_utf8_files = \
 
 # Define socket sizes and types.
 @LIBGO_IS_LINUX_TRUE@syscall_socket_file = go/syscall/socket_linux.go epoll.go
+@LIBGO_IS_LINUX_FALSE@syscall_socket_type_file = 
+@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_PPC64LE_FALSE@@LIBGO_IS_PPC64_FALSE@syscall_socket_type_file = go/syscall/socket_linux_type.go
+@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_PPC64LE_FALSE@@LIBGO_IS_PPC64_TRUE@syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
+@LIBGO_IS_LINUX_TRUE@@LIBGO_IS_PPC64LE_TRUE@syscall_socket_type_file = go/syscall/socket_linux_ppc64x_type.go
 @LIBGO_IS_SOLARIS_FALSE@syscall_socket_os_file = go/syscall/socket_posix.go
 
 # Define socket functions.
@@ -1898,6 +1902,7 @@ go_base_syscall_files = \
 	$(syscall_size_file) \
 	$(syscall_socket_file) \
 	$(syscall_socket_os_file) \
+	$(syscall_socket_type_file) \
 	$(syscall_uname_file) \
 	$(syscall_netlink_file) \
 	$(syscall_lsf_file) \

libgo/go/syscall/socket_linux.go

@@ -136,11 +136,6 @@ type RawSockaddrNetlink struct {
 	Groups uint32
 }
 
-type RawSockaddr struct {
-	Family uint16
-	Data   [14]int8
-}
-
 // BindToDevice binds the socket associated with fd to device.
 func BindToDevice(fd int, device string) (err error) {
 	return SetsockoptString(fd, SOL_SOCKET, SO_BINDTODEVICE, device)

libgo/go/syscall/socket_linux_ppc64x_type.go

@@ -0,0 +1,14 @@
+// socket_linux_ppc64x_type.go -- Socket handling specific to ppc64 GNU/Linux.
+
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+// Type needed on ppc64le & ppc64
+
+type RawSockaddr struct {
+	Family uint16
+	Data   [14]uint8
+}

libgo/go/syscall/socket_linux_type.go

@@ -0,0 +1,14 @@
+// socket_linux_type.go -- Socket handling specific to GNU/Linux.
+
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+// Type needed if not on ppc64le or ppc64
+
+type RawSockaddr struct {
+	Family uint16
+	Data   [14]int8
+}

libgo/mksysinfo.sh

@@ -201,6 +201,67 @@ enum {
 #ifdef TCSETS
   TCSETS_val = TCSETS,
 #endif
+#ifdef TUNSETIFF
+  TUNSETIFF_val = TUNSETIFF,
+#endif
+#ifdef TUNSETNOCSUM
+  TUNSETNOCSUM_val = TUNSETNOCSUM,
+#endif
+#ifdef TUNSETDEBUG
+  TUNSETDEBUG_val = TUNSETDEBUG,
+#endif
+#ifdef TUNSETPERSIST
+  TUNSETPERSIST_val = TUNSETPERSIST,
+#endif
+#ifdef TUNSETOWNER
+  TUNSETOWNER_val = TUNSETOWNER,
+#endif
+#ifdef TUNSETLINK
+  TUNSETLINK_val = TUNSETLINK,
+#endif
+#ifdef TUNSETGROUP
+  TUNSETGROUP_val = TUNSETGROUP,
+#endif
+#ifdef TUNGETFEATURES
+  TUNGETFEATURES_val = TUNGETFEATURES,
+#endif
+#ifdef TUNSETOFFLOAD
+  TUNSETOFFLOAD_val = TUNSETOFFLOAD,
+#endif
+#ifdef TUNSETTXFILTER
+  TUNSETTXFILTER_val = TUNSETTXFILTER,
+#endif
+#ifdef TUNGETIFF
+  TUNGETIFF_val = TUNGETIFF,
+#endif
+#ifdef TUNGETSNDBUF
+  TUNGETSNDBUF_val = TUNGETSNDBUF,
+#endif
+#ifdef TUNSETSNDBUF
+  TUNSETSNDBUF_val = TUNSETSNDBUF,
+#endif
+#ifdef TUNATTACHFILTER
+  TUNATTACHFILTER_val = TUNATTACHFILTER,
+#endif
+#ifdef TUNDETACHFILTER
+  TUNDETACHFILTER_val = TUNDETACHFILTER,
+#endif
+#ifdef TUNGETVNETHDRSZ
+  TUNGETVNETHDRSZ_val = TUNGETVNETHDRSZ,
+#endif
+#ifdef TUNSETVNETHDRSZ
+  TUNSETVNETHDRSZ_val = TUNSETVNETHDRSZ,
+#endif
+#ifdef TUNSETQUEUE
+  TUNSETQUEUE_val = TUNSETQUEUE,
+#endif
+#ifdef TUNSETIFINDEX
+  TUNSETIFINDEX_val = TUNSETIFINDEX,
+#endif
+#ifdef TUNGETFILTER
+  TUNGETFILTER_val = TUNGETFILTER,
+#endif
+
 };
 EOF
 
@@ -830,6 +891,9 @@ grep '^type _passwd ' gen-sysinfo.go | \
 grep '^const _TIOC' gen-sysinfo.go | \
     grep -v '_val =' | \
     sed -e 's/^\(const \)_\(TIOC[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
+grep '^const _TUNSET' gen-sysinfo.go | \
+    grep -v '_val =' | \
+    sed -e 's/^\(const \)_\(TUNSET[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 # We need TIOCGWINSZ.
 if ! grep '^const TIOCGWINSZ' ${OUT} >/dev/null 2>&1; then
   if grep '^const _TIOCGWINSZ_val' ${OUT} >/dev/null 2>&1; then
@@ -872,6 +936,129 @@ if ! grep '^const TIOCSIG' ${OUT} >/dev/null 2>&1; then
   fi
 fi
 
+if ! grep '^const TUNSETNOCSUM' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETNOCSUM_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETNOCSUM = _TUNSETNOCSUM_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETDEBUG' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETDEBUG_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETDEBUG = _TUNSETDEBUG_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETIFF' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETIFF_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETIFF = _TUNSETIFF_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETPERSIST' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETPERSIST_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETPERSIST = _TUNSETPERSIST_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETOWNER' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETOWNER_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETOWNER = _TUNSETOWNER_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETLINK' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETLINK_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETLINK = _TUNSETLINK_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETGROUP' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETGROUP_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETGROUP = _TUNSETGROUP_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNGETFEATURES' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNGETFEATURES_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNGETFEATURES = _TUNGETFEATURES_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETOFFLOAD' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETOFFLOAD_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETOFFLOAD = _TUNSETOFFLOAD_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETTXFILTER' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETTXFILTER_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETTXFILTER = _TUNSETTXFILTER_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNGETIFF' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNGETIFF_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNGETIFF = _TUNGETIFF_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNGETSNDBUF' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNGETSNDBUF_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNGETSNDBUF = _TUNGETSNDBUF_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETSNDBUF' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETSNDBUF_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETSNDBUF = _TUNSETSNDBUF_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNATTACHFILTER' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNATTACHFILTER_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNATTACHFILTER = _TUNATTACHFILTER_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNDETACHFILTER' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNDETACHFILTER_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNDETACHFILTER = _TUNDETACHFILTER_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNGETVNETHDRSZ' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNGETVNETHDRSZ_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNGETVNETHDRSZ = _TUNGETVNETHDRSZ_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETVNETHDRSZ' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETVNETHDRSZ_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETVNETHDRSZ = _TUNSETVNETHDRSZ_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNSETQUEUE' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETQUEUE_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETQUEUE = _TUNSETQUEUE_val' >> ${OUT}
+  fi
+fi
+
+
+if ! grep '^const TUNSETIFINDEX' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNSETIFINDEX_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNSETIFINDEX = _TUNSETIFINDEX_val' >> ${OUT}
+  fi
+fi
+
+if ! grep '^const TUNGETFILTER' ${OUT} >/dev/null 2>&1; then
+  if grep '^const _TUNGETFILTER_val' ${OUT} >/dev/null 2>&1; then
+    echo 'const TUNGETFILTER = _TUNGETFILTER_val' >> ${OUT}
+  fi
+fi
+
+
+
 # The ioctl flags for terminal control
 grep '^const _TC[GS]ET' gen-sysinfo.go | grep -v _val | \
     sed -e 's/^\(const \)_\(TC[GS]ET[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}