Xtables-addons 1.31

This patch adds a module which is useful to users of grsecurity's RBAC
system. It matches packets based on whether RBAC is enabled or
disabled.

See: http://grsecurity.net/

Signed-off-by: Anthony G. Basile <basile@opensource.dyc.edu>

Jan Engelhardt> Also, I do not see a xt_gradm.c in this patch.

This [xt_gradm.c] is part of the grsecurity patch which not only adds
the Xtables code, but also the RBAC code. Without the entire RBAC
stuff, xt_gradm does not make sense and so it is included with the
grsecurity patch to the kernel, and not this patch to Xtables-addons.

>Can you elaborate a bit on how this is useful in conjunction with
>rulesets? I could imagine it be used with LSM selctx'es for example,
>or another extension that tests for other RBAC attributes.

The idea here is that when the RBAC rulesets are not being enforced,
the system is more vulnerable and the user wants stricter firewall
rules. When RBAC is being enforced, one can relax the firewall and
access to services which are now better protected. In practice this
usually means allowing only access to some trusted IP(s) on boot
before RBAC is turned on.

INSTALL

@@ -4,7 +4,7 @@ Installation instructions for Xtables-addons
 Xtables-addons uses the well-known configure(autotools) infrastructure
 in combination with the kernel's Kbuild system.
 
-	$ ./configure
+	$ ./configure --with-xtlibdir=SEE_BELOW
 	$ make
 	# make install
 
@@ -51,20 +51,14 @@ Configuring and compiling
 	For RPM building, it should be /usr/src/linux-obj/...
 	or whatever location the distro makes use of.
 
---with-xtables=
-
-	Specifies the path to the directory where we may find
-	xtables.h, should it not be within the standard C compiler
-	include path (/usr/include), or if you want to override it.
-	The directory will be checked for xtables.h and
-	include/xtables.h. (The latter to support both standard
-	/usr/include and the iptables source root.)
-
 --with-xtlibdir=
 
 	Specifies the path to where the newly built extensions should
 	be installed when `make install` is run. It uses the same
-	default as the Xtables/iptables package, ${libexecdir}/xtables.
+	default as the Xtables/iptables package, ${libexecdir}/xtables,
+	but you may need to specify this nevertheless, as autotools
+	defaults to using /usr/local as prefix, and distributions put
+	the files in differing locations.
 
 If you want to enable debugging, use
 
@@ -73,6 +67,25 @@ If you want to enable debugging, use
 (-O0 is used to turn off instruction reordering, which makes debugging
 much easier.)
 
+To make use of a libxtables that is not in the default path, either
+
+  a) append the location of the pkg-config files like:
+
+	PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
+
+     (Assuming that files have been installed)
+or,
+
+  b) override the pkg-config variables, for example:
+
+	./configure libxtables_CFLAGS="-I../iptables/include" \
+		libxtables_LIBS="-L../iptables/.libs \
+			-Wl,-rpath,../iptables/.libs -lxtables"
+
+     (Use this in case you wish to use it without having to
+     run `make install`. This is because the libxtables.pc pkgconfig
+     file in ../iptables would already point to e.g. /usr/local.)
+
 
 Build-time options
 ==================
@@ -89,4 +102,5 @@ Except for --with-kbuild, distributions should not have a need to
 supply any other flags (besides --prefix=/usr and perhaps
 --libdir=/usr/lib64, etc.) to configure when all prerequired packages
 are installed. If iptables-devel is installed, necessary headers should
-be in /usr/include, so --with-xtables is not needed.
+already be in /usr/include, so that overriding PKG_CONFIG_PATH,
+libxtables_CFLAGS and libxtables_LIBS variables should not be needed.

Makefile.am

@@ -1,7 +1,7 @@
 # -*- Makefile -*-
 
 ACLOCAL_AMFLAGS  = -I m4
-SUBDIRS          = extensions
+SUBDIRS          = extensions geoip
 
 man_MANS := xtables-addons.8
 
@@ -16,10 +16,15 @@ install-exec-hook:
 
 config.status: Makefile.iptrules.in
 
+tmpdir := $(shell mktemp -dtu)
+packer  = xz
+packext = .tar.xz
+
 .PHONY: tarball
 tarball:
-	rm -Rf /tmp/xtables-addons-${PACKAGE_VERSION};
-	pushd ${top_srcdir} && git archive --prefix=xtables-addons-${PACKAGE_VERSION}/ HEAD | tar -C /tmp -x && popd;
-	pushd /tmp/xtables-addons-${PACKAGE_VERSION} && ./autogen.sh && popd;
-	tar -C /tmp -cjf xtables-addons-${PACKAGE_VERSION}.tar.bz2 --owner=root --group=root xtables-addons-${PACKAGE_VERSION}/;
-	rm -Rf /tmp/xtables-addons-${PACKAGE_VERSION};
+# do not use mkdir_p here.
+	mkdir ${tmpdir}
+	pushd ${top_srcdir} && git archive --prefix=${PACKAGE_NAME}-${PACKAGE_VERSION}/ HEAD | tar -C ${tmpdir} -x && popd;
+	pushd ${tmpdir}/${PACKAGE_NAME}-${PACKAGE_VERSION} && ./autogen.sh && popd;
+	tar --use=${packer} -C ${tmpdir} -cf ${PACKAGE_NAME}-${PACKAGE_VERSION}${packext} --owner=root --group=root ${PACKAGE_NAME}-${PACKAGE_VERSION}/;
+	rm -Rf ${tmpdir};

Makefile.iptrules.in

@@ -1,6 +1,8 @@
 # -*- Makefile -*-
 # MANUAL
 
+abs_top_srcdir  = @abs_top_srcdir@
+
 prefix          = @prefix@
 exec_prefix     = @exec_prefix@
 libexecdir      = @libexecdir@
@@ -8,11 +10,13 @@ xtlibdir        = @xtlibdir@
 
 CC              = @CC@
 CCLD            = ${CC}
+CFLAGS          = @CFLAGS@
+LDFLAGS         = @LDFLAGS@
 
 regular_CFLAGS  = @regular_CFLAGS@
 libxtables_CFLAGS = @libxtables_CFLAGS@
 libxtables_LIBS   = @libxtables_LIBS@
-AM_CFLAGS         = ${regular_CFLAGS} ${libxtables_CFLAGS}
+AM_CFLAGS         = ${regular_CFLAGS} ${libxtables_CFLAGS} -I${abs_top_srcdir}/extensions
 AM_DEPFLAGS     = -Wp,-MMD,$(@D)/.$(@F).d,-MT,$@
 
 AM_DEFAULT_VERBOSITY = 0

Makefile.mans.in

@@ -3,8 +3,8 @@
 
 srcdir := @srcdir@
 
-wcman_matches := $(shell find "${srcdir}" -name 'libxt_[a-z]*.man')
-wcman_targets := $(shell find "${srcdir}" -name 'libxt_[A-Z]*.man')
+wcman_matches := $(shell find "${srcdir}" -name 'libxt_[a-z]*.man' | sort)
+wcman_targets := $(shell find "${srcdir}" -name 'libxt_[A-Z]*.man' | sort)
 wlist_matches := $(patsubst ${srcdir}/libxt_%.man,%,${wcman_matches})
 wlist_targets := $(patsubst ${srcdir}/libxt_%.man,%,${wcman_targets})
 

configure.ac

@@ -1,9 +1,9 @@
 
-AC_INIT([xtables-addons], [1.22])
+AC_INIT([xtables-addons], [1.31])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 AC_PROG_INSTALL
-AM_INIT_AUTOMAKE([1.10 -Wall foreign subdir-objects])
+AM_INIT_AUTOMAKE([1.10.2 -Wall foreign subdir-objects])
 AC_PROG_CC
 AM_PROG_CC_C_O
 AC_DISABLE_STATIC
@@ -21,56 +21,23 @@ if [[ "$kbuilddir" == no ]]; then
 	kbuilddir="";
 fi
 
-AC_ARG_WITH([ksource],,[ksourcedir="$withval"])
-AC_ARG_WITH([xtables],
-	AS_HELP_STRING([--with-xtables=PATH],
-	[Path to the Xtables includes [[none]]]),
-	[xtables_location="$withval"])
+AC_CHECK_HEADERS([linux/netfilter/x_tables.h], [],
+	[AC_MSG_ERROR([You need to have linux/netfilter/x_tables.h, see INSTALL file for details])])
+PKG_CHECK_MODULES([libxtables], [xtables >= 1.4.3])
+xtlibdir="$(pkg-config --variable=xtlibdir xtables)"
+
 AC_ARG_WITH([xtlibdir],
 	AS_HELP_STRING([--with-xtlibdir=PATH],
-	[Path where to install Xtables extensions [[LIBEXECDIR/xtables]]]),
-	[xtlibdir="$withval"],
-	[xtlibdir='${libexecdir}/xtables'])
-
-#
-# --with-xtables= overrides a possibly installed pkgconfig file.
-#
-if [[ -n "$xtables_location" ]]; then
-	AC_MSG_CHECKING([xtables.h presence])
-	if [[ -f "$xtables_location/xtables.h" ]]; then
-		AC_MSG_RESULT([$xtables_location/xtables.h])
-		libxtables_CFLAGS="-I $xtables_location";
-	elif [[ -f "$xtables_location/include/xtables.h" ]]; then
-		AC_MSG_RESULT([$xtables_location/include/xtables.h])
-		libxtables_CFLAGS="-I $xtables_location/include";
-	fi;
-	if [[ -z "$xtables_CFLAGS" ]]; then
-		if [[ -f "$includedir/xtables.h" ]]; then
-			AC_MSG_RESULT([$includedir/xtables.h])
-		else
-			AC_MSG_RESULT([no])
-		fi;
-	fi;
-	libxtables_LIBS="-lxtables";
-	AC_SUBST([libxtables_CFLAGS])
-	AC_SUBST([libxtables_LIBS])
-else
-	PKG_CHECK_MODULES([libxtables], [xtables >= 1.4.3])
-fi;
-AC_CHECK_HEADERS([linux/netfilter/x_tables.h], [],
-	[AC_MSG_ERROR([You need to have linux/netfilter/x_tables.h, either through /usr/include or the iptables directory (--with-xtables=)])])
+	[Path where to install Xtables extensions [[autodetect]]]]),
+	[xtlibdir="$withval"])
+AC_MSG_CHECKING([Xtables module directory])
+AC_MSG_RESULT([$xtlibdir])
 
 regular_CFLAGS="-D_LARGEFILE_SOURCE=1 -D_LARGE_FILES -D_FILE_OFFSET_BITS=64 \
 	-D_REENTRANT -Wall -Waggregate-return -Wmissing-declarations \
 	-Wmissing-prototypes -Wredundant-decls -Wshadow -Wstrict-prototypes \
-	-Winline -pipe -DXTABLES_LIBDIR=\\\"\${xtlibdir}\\\"";
-kinclude_CFLAGS="";
-if [[ -n "$kbuilddir" ]]; then
-	kinclude_CFLAGS="$kinclude_CFLAGS -I $kbuilddir/include";
-fi;
-if [[ -n "$ksourcedir" ]]; then
-	kinclude_CFLAGS="$kinclude_CFLAGS -I $ksourcedir/include";
-fi;
+	-Winline -pipe -DXTABLES_LIBDIR=\\\"\${xtlibdir}\\\" \
+	-I\${XA_TOPSRCDIR}/include";
 
 #
 # check kernel version
@@ -81,6 +48,7 @@ if grep -q "CentOS release 5\." /etc/redhat-release 2>/dev/null ||
 	# Well, just a warning. Maybe the admin updated the kernel.
 	echo "WARNING: This distribution's shipped kernel is not supported.";
 fi;
+AC_MSG_CHECKING([kernel version that we will build against])
 krel="$(make -sC ${kbuilddir} kernelrelease)";
 krel="${krel%%-*}";
 kmajor="${krel%%.*}";
@@ -89,29 +57,33 @@ kminor="${krel%%.*}";
 krel="${krel#*.}";
 kmicro="${krel%%.*}";
 if test "$kmicro" = "$krel"; then
+	kmicro="$(($kmicro+0))"; # Get rid of non numbers ("2.6.36+" -> "2.6.36")
 	kstable=0;
 else
+	kmicro="$(($kmicro+0))";
 	kstable="${krel#*.}";
-	if test -z "$kstable"; then
-		kstable=0;
-	fi;
+	kstable="$(($kstable+0))";
 fi;
-echo "Found kernel version $kmajor.$kminor.$kmicro.$kstable in $kbuilddir";
-if test "$kmajor" -gt 2 -o "$kminor" -gt 6 -o "$kmicro" -gt 32; then
-	echo "WARNING: You are trying a newer kernel. Results may vary. :-)";
-elif test \( "$kmajor" -lt 2 -o "$kminor" -lt 6 -o "$kmicro" -lt 17 \) -o \
-    \( "$kmajor" -eq 2 -a "$kminor" -eq 6 -a "$kmicro" -eq 18 -a \
-    "$kstable" -lt 5 \); then
-	echo "ERROR: That kernel version is not supported. Please see INSTALL for minimum configuration.";
-	exit 1;
+if test -z "$kmajor" -o -z "$kminor" -o -z "$kmicro"; then
+	echo "WARNING: Version detection did not succeed. Continue at own luck.";
+else
+	echo "$kmajor.$kminor.$kmicro.$kstable in $kbuilddir";
+	if test "$kmajor" -gt 2 -o "$kminor" -gt 6 -o "$kmicro" -gt 36; then
+		echo "WARNING: You are trying a newer kernel. Results may vary. :-)";
+	elif test \( "$kmajor" -lt 2 -o \
+	    \( "$kmajor" -eq 2 -a "$kminor" -lt 6 \) -o \
+	    \( "$kmajor" -eq 2 -a "$kminor" -eq 0 -a "$kmicro" -lt 17 \) -o \
+	    \( "$kmajor" -eq 2 -a "$kminor" -eq 6 -a "$kmicro" -eq 18 -a \
+	    "$kstable" -lt 5 \) \); then
+		echo "ERROR: That kernel version is not supported. Please see INSTALL for minimum configuration.";
+		exit 1;
+	fi;
 fi;
 
 AC_SUBST([regular_CFLAGS])
-AC_SUBST([kinclude_CFLAGS])
 AC_SUBST([kbuilddir])
-AC_SUBST([ksourcedir])
 AC_SUBST([xtlibdir])
-AC_CONFIG_FILES([Makefile Makefile.iptrules Makefile.mans
+AC_CONFIG_FILES([Makefile Makefile.iptrules Makefile.mans geoip/Makefile
 	extensions/Makefile extensions/ACCOUNT/Makefile
 	extensions/ipset/Makefile extensions/pknock/Makefile])
 AC_OUTPUT

doc/api/2.6.17.c

@@ -0,0 +1,64 @@
+match:
+
+	/* true/false */
+	int
+	(*match)(
+		const struct sk_buff *skb,
+		const struct net_device *in,
+		const struct net_device *out,
+		const struct xt_match *match,
+		const void *matchinfo,
+		int offset,
+		unsigned int protoff,
+		int *hotdrop,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const char *tablename,
+		const void *ip,
+		const struct xt_match *match,
+		void *matchinfo,
+		unsigned int matchinfosize,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_match *match,
+		void *matchinfo,
+		unsigned int matchinfosize,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff **pskb,
+		const struct net_device *in,
+		const struct net_device *out,
+		unsigned int hooknum,
+		const struct xt_target *target,
+		const void *targinfo,
+		void *userdata,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const char *tablename,
+		const void *entry,
+		const struct xt_target *target,
+		void *targinfo,
+		unsigned int targinfosize,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_target *target,
+		void *targinfo,
+		unsigned int targinfosize,
+	);

doc/api/2.6.19.c

@@ -0,0 +1,59 @@
+match:
+
+	/* true/false */
+	int
+	(*match)(
+		const struct sk_buff *skb,
+		const struct net_device *in,
+		const struct net_device *out,
+		const struct xt_match *match,
+		const void *matchinfo,
+		int offset,
+		unsigned int protoff,
+		int *hotdrop,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const char *tablename,
+		const void *ip,
+		const struct xt_match *match,
+		void *matchinfo,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_match *match,
+		void *matchinfo,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff **pskb,
+		const struct net_device *in,
+		const struct net_device *out,
+		unsigned int hooknum,
+		const struct xt_target *target,
+		const void *targinfo,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const char *tablename,
+		const void *entry,
+		const struct xt_target *target,
+		void *targinfo,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_target *target,
+		void *targinfo,
+	);

doc/api/2.6.23.c

@@ -0,0 +1,59 @@
+match:
+
+	/* true/false */
+	bool
+	(*match)(
+		const struct sk_buff *skb,
+		const struct net_device *in,
+		const struct net_device *out,
+		const struct xt_match *match,
+		const void *matchinfo,
+		int offset,
+		unsigned int protoff,
+		bool *hotdrop,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const char *tablename,
+		const void *ip,
+		const struct xt_match *match,
+		void *matchinfo,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_match *match,
+		void *matchinfo,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff **pskb,
+		const struct net_device *in,
+		const struct net_device *out,
+		unsigned int hooknum,
+		const struct xt_target *target,
+		const void *targinfo,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const char *tablename,
+		const void *entry,
+		const struct xt_target *target,
+		void *targinfo,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_target *target,
+		void *targinfo,
+	);

doc/api/2.6.24.c

@@ -0,0 +1,59 @@
+match:
+
+	/* true/false */
+	bool
+	(*match)(
+		const struct sk_buff *skb,
+		const struct net_device *in,
+		const struct net_device *out,
+		const struct xt_match *match,
+		const void *matchinfo,
+		int offset,
+		unsigned int protoff,
+		bool *hotdrop,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const char *tablename,
+		const void *ip,
+		const struct xt_match *match,
+		void *matchinfo,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_match *match,
+		void *matchinfo,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff *skb,
+		const struct net_device *in,
+		const struct net_device *out,
+		unsigned int hooknum,
+		const struct xt_target *target,
+		const void *targinfo,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const char *tablename,
+		const void *entry,
+		const struct xt_target *target,
+		void *targinfo,
+		unsigned int hook_mask,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_target *target,
+		void *targinfo,
+	);

doc/api/2.6.28.c

@@ -0,0 +1,39 @@
+match:
+
+	/* true/false */
+	bool
+	(*match)(
+		const struct sk_buff *skb,
+		const struct xt_match_param *,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const struct xt_mtchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_mtdtor_param *,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff *skb,
+		const struct xt_target_param *,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const struct xt_tgchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_tgdtor_param *,
+	);

doc/api/2.6.31.c

@@ -0,0 +1,38 @@
+match:
+
+	/* true/false */
+	bool
+	(*match)(
+		const struct sk_buff *skb,
+		const struct xt_match_param *,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const struct xt_mtchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_mtdtor_param *,
+	);
+
+target:
+
+	unsigned int
+	(*target)(
+		struct sk_buff *skb,
+		const struct xt_target_param *,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const struct xt_tgchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_tgdtor_param *,
+	);

doc/api/2.6.32.c

@@ -0,0 +1,39 @@
+match:
+
+	/* true/false */
+	bool
+	(*match)(
+		const struct sk_buff *skb,
+		const struct xt_match_param *,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const struct xt_mtchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_mtdtor_param *,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff *skb,
+		const struct xt_target_param *,
+	);
+
+	/* true/false */
+	bool
+	(*checkentry)(
+		const struct xt_tgchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_tgdtor_param *,
+	);

doc/api/2.6.35.c

@@ -0,0 +1,39 @@
+match:
+
+	/* true/false */
+	bool
+	(*match)(
+		const struct sk_buff *skb,
+		struct xt_action_param *,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const struct xt_mtchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_mtdtor_param *,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff *skb,
+		const struct xt_action_param *,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const struct xt_tgchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_tgdtor_param *,
+	);

doc/api/xt-a.c

@@ -0,0 +1,39 @@
+match:
+
+	/* true/false */
+	bool
+	(*match)(
+		const struct sk_buff *skb,
+		struct xt_action_param *,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const struct xt_mtchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_mtdtor_param *,
+	);
+
+target:
+
+	/* verdict */
+	unsigned int
+	(*target)(
+		struct sk_buff **pskb,
+		const struct xt_action_param *,
+	);
+
+	/* error code */
+	int
+	(*checkentry)(
+		const struct xt_tgchk_param *,
+	);
+
+	void
+	(*destroy)(
+		const struct xt_tgdtor_param *,
+	);

doc/changelog.txt

@@ -3,7 +3,93 @@ HEAD
 ====
 
 
-Xtables-addons 1.22 (January 22 2009)
+v1.31 (November 05 2010)
+========================
+- LOGMARK: print remaining lifetime of cts
+- build: improve detection of kernel version and error handling
+- build: automatically derive Xtables module directory, thus
+  --with-xtlibdir is no longer needed for ./configure in most cases
+  (If I still see a distro using it, I will scold you for not
+  reading this changelog.)
+- xt_iface: allow matching against incoming/outgoing interface
+- libxt_gradm: match packets based on status of grsecurity RBAC
+  (userspace part only - xt_gradm is in the grsec patch)
+
+
+v1.30 (October 02 2010)
+=======================
+- update to ipset 4.4
+  * ipport{,ip,net}hash did not work with mixed "src" and "dst"
+    destination parameters
+- deactivate building xt_TEE and xt_CHECKSUM by default, as these have been
+  merged upstream in Linux 2.6.35 and 2.6.36, respectively.
+  Distros still wishing to build this need to enable it in their build
+  script, e.g. perl -i -pe 's{^build_TEE=.*}{build_TEE=m}' mconfig;
+
+
+v1.29 (September 29 2010)
+=========================
+- compat_xtables: return bool for match_check and target_check in 2.6.23..34
+- ipset: enable building of ip_set_ipport{ip,net}hash.ko
+- support for Linux 2.6.36
+- SYSRQ: resolve compile error with Linux 2.6.36
+- TEE: resolve compile error with Linux 2.6.36
+- add workaround for broken linux-glibc-devel 2.6.34 userspace headers
+  ("implicit declaration of function 'ALIGN'")
+
+
+Xtables-addons 1.28 (July 24 2010)
+==================================
+- RAWNAT: IPv6 variants erroneously rejected masks /33-/128
+- new target xt_CHECKSUM
+- xt_length2: add support for IPv6 jumbograms
+- xt_geoip: fix possible out-of-bounds access
+- import xt_geoip database scripts
+
+
+Xtables-addons 1.27 (May 16 2010)
+=================================
+- further updates for the upcoming 2.6.35 changes
+
+
+Xtables-addons 1.26 (April 30 2010)
+===================================
+- compat_xtables: fix 2.6.34 compile error due to a typo
+
+
+Xtables-addons 1.25 (April 26 2010)
+===================================
+- TEE: do rechecksumming in PREROUTING too
+- TEE: decrease TTL on cloned packet
+- TEE: set dont-fragment on cloned packets
+- TEE: free skb when route lookup failed
+- TEE: do not limit use to mangle table
+- TEE: do not retain iif and mark on cloned packet
+- TEE: new loop detection logic
+- TEE: use less expensive pskb_copy
+- condition: remove unnecessary RCU protection
+
+
+Xtables-addons 1.24 (March 17 2010)
+===================================
+- build: fix build of userspace modules against old (pre-2.6.25)
+  headers from linux-glibc-devel (/usr/include/linux)
+- ipp2p: updated bittorent command recognition
+- SYSRQ: let module load when crypto is unavailable
+- SYSRQ: allow processing of UDP-Lite
+
+
+Xtables-addons 1.23 (February 24 2010)
+======================================
+- build: support for Linux 2.6.34
+- build: remove unused --with-ksource option
+- build: remove unneeded --with-xtables option
+- build: fix compilations in RAWNAT, SYSRQ and length2 when CONFIG_IPV6=n
+- ipset: update to 4.2
+- ECHO: fix compilation w.r.t. skb_dst
+
+
+Xtables-addons 1.22 (January 22 2010)
 =====================================
 - compat_xtables: support for 2.6.33 skb_iif changes
 - geoip: for FHS compliance use /usr/share/xt_geoip instead of /var/geoip

extensions/ACCOUNT/libxt_ACCOUNT.c

@@ -12,6 +12,7 @@
 #include <stddef.h>
 #include <xtables.h>
 #include "xt_ACCOUNT.h"
+#include "compat_user.h"
 
 static struct option account_tg_opts[] = {
 	{.name = "addr",  .has_arg = true, .val = 'a'},
@@ -142,7 +143,7 @@ account_tg_save(const void *ip, const struct xt_entry_target *target)
 static struct xtables_target account_tg_reg = {
 	.name          = "ACCOUNT",
 	.revision      = 1,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.version       = XTABLES_VERSION,
 	.size          = XT_ALIGN(sizeof(struct ipt_acc_info)),
 	.userspacesize = offsetof(struct ipt_acc_info, table_nr),

extensions/ACCOUNT/xt_ACCOUNT.c

@@ -264,7 +264,7 @@ static int ipt_acc_table_insert(const char *name, __be32 ip, __be32 netmask)
 	return -1;
 }
 
-static bool ipt_acc_checkentry(const struct xt_tgchk_param *par)
+static int ipt_acc_checkentry(const struct xt_tgchk_param *par)
 {
 	struct ipt_acc_info *info = par->targinfo;
 	int table_nr;
@@ -276,13 +276,13 @@ static bool ipt_acc_checkentry(const struct xt_tgchk_param *par)
 
 	if (table_nr == -1) {
 		printk("ACCOUNT: Table insert problem. Aborting\n");
-		return false;
+		return -EINVAL;
 	}
 	/* Table nr caching so we don't have to do an extra string compare
 	   for every packet */
 	info->table_nr = table_nr;
 
-	return true;
+	return 0;
 }
 
 static void ipt_acc_destroy(const struct xt_tgdtor_param *par)
@@ -478,7 +478,7 @@ static void ipt_acc_depth2_insert(struct ipt_acc_mask_8 *mask_8,
 	}
 }
 
-static unsigned int ipt_acc_target(struct sk_buff **pskb, const struct xt_target_param *par)
+static unsigned int ipt_acc_target(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct ipt_acc_info *info =
 		par->targinfo;
@@ -494,7 +494,7 @@ static unsigned int ipt_acc_target(struct sk_buff **pskb, const struct xt_target
 			"IPs %u.%u.%u.%u/%u.%u.%u.%u\n", info->table_nr,
 			NIPQUAD(src_ip), NIPQUAD(dst_ip));
 		spin_unlock_bh(&ipt_acc_lock);
-		return IPT_CONTINUE;
+		return XT_CONTINUE;
 	}
 
 	/* 8 bit network or "any" network */
@@ -506,7 +506,7 @@ static unsigned int ipt_acc_target(struct sk_buff **pskb, const struct xt_target
 			ipt_acc_tables[info->table_nr].netmask,
 			src_ip, dst_ip, size, &ipt_acc_tables[info->table_nr].itemcount);
 		spin_unlock_bh(&ipt_acc_lock);
-		return IPT_CONTINUE;
+		return XT_CONTINUE;
 	}
 
 	/* 16 bit network */
@@ -517,7 +517,7 @@ static unsigned int ipt_acc_target(struct sk_buff **pskb, const struct xt_target
 			ipt_acc_tables[info->table_nr].netmask,
 			src_ip, dst_ip, size, &ipt_acc_tables[info->table_nr].itemcount);
 		spin_unlock_bh(&ipt_acc_lock);
-		return IPT_CONTINUE;
+		return XT_CONTINUE;
 	}
 
 	/* 24 bit network */
@@ -528,7 +528,7 @@ static unsigned int ipt_acc_target(struct sk_buff **pskb, const struct xt_target
 			ipt_acc_tables[info->table_nr].netmask,
 			src_ip, dst_ip, size, &ipt_acc_tables[info->table_nr].itemcount);
 		spin_unlock_bh(&ipt_acc_lock);
-		return IPT_CONTINUE;
+		return XT_CONTINUE;
 	}
 
 	printk("ACCOUNT: ipt_acc_target: Unable to process packet. "
@@ -536,7 +536,7 @@ static unsigned int ipt_acc_target(struct sk_buff **pskb, const struct xt_target
 		info->table_nr, NIPQUAD(src_ip), NIPQUAD(dst_ip));
 
 	spin_unlock_bh(&ipt_acc_lock);
-	return IPT_CONTINUE;
+	return XT_CONTINUE;
 }
 
 /*
@@ -1082,7 +1082,7 @@ static int ipt_acc_get_ctl(struct sock *sk, int cmd, void *user, int *len)
 static struct xt_target xt_acc_reg __read_mostly = {
 	.name = "ACCOUNT",
 	.revision = 1,
-	.family = AF_INET,
+	.family     = NFPROTO_IPV4,
 	.target = ipt_acc_target,
 	.targetsize = sizeof(struct ipt_acc_info),
 	.checkentry = ipt_acc_checkentry,

extensions/Kbuild

@@ -7,12 +7,16 @@ obj-m                    += compat_xtables.o
 
 obj-${build_ACCOUNT}     += ACCOUNT/
 obj-${build_CHAOS}       += xt_CHAOS.o
+obj-${build_CHECKSUM}    += xt_CHECKSUM.o
 obj-${build_DELUDE}      += xt_DELUDE.o
 obj-${build_DHCPMAC}     += xt_DHCPMAC.o
 obj-${build_ECHO}        += xt_ECHO.o
 obj-${build_IPMARK}      += xt_IPMARK.o
 obj-${build_LOGMARK}     += xt_LOGMARK.o
-obj-${build_RAWNAT}      += xt_RAWNAT.o iptable_rawpost.o ip6table_rawpost.o
+obj-${build_RAWNAT}      += xt_RAWNAT.o iptable_rawpost.o
+ifneq (${CONFIG_IPV6},)
+obj-${build_RAWNAT}      += ip6table_rawpost.o
+endif
 obj-${build_SYSRQ}       += xt_SYSRQ.o
 obj-${build_STEAL}       += xt_STEAL.o
 obj-${build_TARPIT}      += xt_TARPIT.o

extensions/Makefile.am

@@ -7,6 +7,8 @@
 _kcall = -C ${kbuilddir} M=${abs_srcdir}
 
 modules:
+	@echo -n "Xtables-addons ${PACKAGE_VERSION} - Linux "
+	@if [ -n "${kbuilddir}" ]; then ${MAKE} ${_kcall} --no-print-directory -s kernelrelease; fi;
 	${AM_V_silent}if [ -n "${kbuilddir}" ]; then ${MAKE} ${_kcall} modules; fi;
 
 modules_install:

extensions/Mbuild

@@ -2,6 +2,7 @@
 
 obj-${build_ACCOUNT}     += ACCOUNT/
 obj-${build_CHAOS}       += libxt_CHAOS.so
+obj-${build_CHECKSUM}    += libxt_CHECKSUM.so
 obj-${build_DELUDE}      += libxt_DELUDE.so
 obj-${build_DHCPMAC}     += libxt_DHCPMAC.so libxt_dhcpmac.so
 obj-${build_ECHO}        += libxt_ECHO.so
@@ -24,3 +25,4 @@ obj-${build_lscan}       += libxt_lscan.so
 obj-${build_pknock}      += pknock/
 obj-${build_psd}         += libxt_psd.so
 obj-${build_quota2}      += libxt_quota2.so
+obj-${build_gradm}       += libxt_gradm.so

extensions/compat_user.h

@@ -0,0 +1,12 @@
+/*
+ *	Userspace-level compat hacks
+ */
+#ifndef _XTABLES_COMPAT_USER_H
+#define _XTABLES_COMPAT_USER_H 1
+
+/* linux-glibc-devel 2.6.34 header screwup */
+#ifndef ALIGN
+#	define ALIGN(s, n) (((s) + ((n) - 1)) & ~((n) - 1))
+#endif
+
+#endif /* _XTABLES_COMPAT_USER_H */

extensions/compat_xtables.c

@@ -1,6 +1,6 @@
 /*
  *	API compat layer
- *	written by Jan Engelhardt <jengelh [at] medozas de>, 2008
+ *	written by Jan Engelhardt <jengelh [at] medozas de>, 2008 - 2010
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License, either
@@ -34,25 +34,49 @@ static bool xtnu_match_run(const struct sk_buff *skb,
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
 {
 	struct xtnu_match *nm = xtcompat_numatch(cm);
-	bool lo_drop = false, lo_ret;
-	struct xt_match_param local_par = {
-		.in        = in,
-		.out       = out,
-		.match     = cm,
-		.matchinfo = matchinfo,
-		.fragoff   = offset,
-		.thoff     = protoff,
-		.hotdrop   = &lo_drop,
-		.family    = NFPROTO_UNSPEC, /* don't have that info */
-	};
+	bool lo_ret;
+	struct xt_action_param local_par;
+	local_par.in        = in;
+	local_par.out       = out;
+	local_par.match     = cm;
+	local_par.matchinfo = matchinfo;
+	local_par.fragoff   = offset;
+	local_par.thoff     = protoff;
+	local_par.hotdrop   = false;
+	local_par.family    = NFPROTO_UNSPEC; /* don't have that info */
 
 	if (nm == NULL || nm->match == NULL)
 		return false;
 	lo_ret = nm->match(skb, &local_par);
-	*hotdrop = lo_drop;
+	*hotdrop = local_par.hotdrop;
 	return lo_ret;
 }
 #endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) && \
+    LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+static bool xtnu_match_run(const struct sk_buff *skb,
+    const struct xt_match_param *par)
+{
+	struct xtnu_match *nm = xtcompat_numatch(par->match);
+	struct xt_action_param local_par;
+	bool ret;
+
+	local_par.in        = par->in;
+	local_par.out       = par->out;
+	local_par.match     = par->match;
+	local_par.matchinfo = par->matchinfo;
+	local_par.fragoff   = par->fragoff;
+	local_par.thoff     = par->thoff;
+	local_par.hotdrop   = false;
+	local_par.family    = par->family;
+
+	if (nm == NULL || nm->match == NULL)
+		return false;
+	ret = nm->match(skb, &local_par);
+	*par->hotdrop = local_par.hotdrop;
+	return ret;
+}
+#endif
 
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18)
 static int xtnu_match_check(const char *table, const void *entry,
@@ -81,7 +105,24 @@ static bool xtnu_match_check(const char *table, const void *entry,
 		return false;
 	if (nm->checkentry == NULL)
 		return true;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23)
 	return nm->checkentry(&local_par);
+#else
+	return nm->checkentry(&local_par) == 0;
+#endif
+}
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) && \
+    LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+static bool xtnu_match_check(const struct xt_mtchk_param *par)
+{
+	struct xtnu_match *nm = xtcompat_numatch(par->match);
+
+	if (nm == NULL)
+		return false;
+	if (nm->checkentry == NULL)
+		return true;
+	return nm->checkentry(par) == 0;
 }
 #endif
 
@@ -105,7 +146,7 @@ static void xtnu_match_destroy(const struct xt_match *cm, void *matchinfo)
 }
 #endif
 
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
 int xtnu_register_match(struct xtnu_match *nt)
 {
 	struct xt_match *ct;
@@ -127,9 +168,19 @@ int xtnu_register_match(struct xtnu_match *nt)
 	ct->table      = (char *)nt->table;
 	ct->hooks      = nt->hooks;
 	ct->proto      = nt->proto;
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
 	ct->match      = xtnu_match_run;
 	ct->checkentry = xtnu_match_check;
 	ct->destroy    = xtnu_match_destroy;
+#elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+	ct->match      = xtnu_match_run;
+	ct->checkentry = xtnu_match_check;
+	ct->destroy    = nt->destroy;
+#else
+	ct->match      = nt->match;
+	ct->checkentry = xtnu_match_check;
+	ct->destroy    = nt->destroy;
+#endif
 	ct->matchsize  = nt->matchsize;
 	ct->me         = nt->me;
 
@@ -188,35 +239,55 @@ static unsigned int xtnu_target_run(struct sk_buff **pskb,
 static unsigned int xtnu_target_run(struct sk_buff *skb,
     const struct net_device *in, const struct net_device *out,
     unsigned int hooknum, const struct xt_target *ct, const void *targinfo)
-#else
-static unsigned int
-xtnu_target_run(struct sk_buff *skb, const struct xt_target_param *par)
 #endif
-{
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
+{
 	struct xtnu_target *nt = xtcompat_nutarget(ct);
-	struct xt_target_param local_par = {
-		.in       = in,
-		.out      = out,
-		.hooknum  = hooknum,
-		.target   = ct,
-		.targinfo = targinfo,
-		.family   = NFPROTO_UNSPEC,
-	};
-#else
-	struct xtnu_target *nt = xtcompat_nutarget(par->target);
-#endif
+	struct xt_action_param local_par;
+
+	local_par.in       = in;
+	local_par.out      = out;
+	local_par.hooknum  = hooknum;
+	local_par.target   = ct;
+	local_par.targinfo = targinfo;
+	local_par.family   = NFPROTO_UNSPEC;
 
 	if (nt != NULL && nt->target != NULL)
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 23)
 		return nt->target(pskb, &local_par);
 #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
 		return nt->target(&skb, &local_par);
-#else
-		return nt->target(&skb, par);
 #endif
 	return XT_CONTINUE;
 }
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) && \
+    LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+static unsigned int
+xtnu_target_run(struct sk_buff *skb, const struct xt_target_param *par)
+{
+	struct xtnu_target *nt = xtcompat_nutarget(par->target);
+	struct xt_action_param local_par;
+
+	local_par.in       = par->in;
+	local_par.out      = par->out;
+	local_par.hooknum  = par->hooknum;
+	local_par.target   = par->target;
+	local_par.targinfo = par->targinfo;
+	local_par.family   = par->family;
+
+	return nt->target(&skb, &local_par);
+}
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
+static unsigned int
+xtnu_target_run(struct sk_buff *skb, const struct xt_action_param *par)
+{
+	struct xtnu_target *nt = xtcompat_nutarget(par->target);
+
+	return nt->target(&skb, par);
+}
+#endif
 
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18)
 static int xtnu_target_check(const char *table, const void *entry,
@@ -246,7 +317,25 @@ static bool xtnu_target_check(const char *table, const void *entry,
 	if (nt->checkentry == NULL)
 		/* this is valid, just like if there was no function */
 		return true;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23)
 	return nt->checkentry(&local_par);
+#else
+	return nt->checkentry(&local_par) == 0;
+#endif
+}
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) && \
+    LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+static bool xtnu_target_check(const struct xt_tgchk_param *par)
+{
+	struct xtnu_target *nt = xtcompat_nutarget(par->target);
+
+	if (nt == NULL)
+		return false;
+	if (nt->checkentry == NULL)
+		return true;
+	return nt->checkentry(par) == 0;
 }
 #endif
 
@@ -295,6 +384,9 @@ int xtnu_register_target(struct xtnu_target *nt)
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
 	ct->checkentry = xtnu_target_check;
 	ct->destroy    = xtnu_target_destroy;
+#elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+	ct->checkentry = xtnu_target_check;
+	ct->destroy    = nt->destroy;
 #else
 	ct->checkentry = nt->checkentry;
 	ct->destroy    = nt->destroy;
@@ -509,4 +601,18 @@ int xtnu_skb_linearize(struct sk_buff *skb)
 EXPORT_SYMBOL_GPL(xtnu_skb_linearize);
 #endif
 
+void *HX_memmem(const void *space, size_t spacesize,
+    const void *point, size_t pointsize)
+{
+	size_t i;
+
+	if (pointsize > spacesize)
+		return NULL;
+	for (i = 0; i <= spacesize - pointsize; ++i)
+		if (memcmp(space + i, point, pointsize) == 0)
+			return (void *)space + i;
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(HX_memmem);
+
 MODULE_LICENSE("GPL");

extensions/compat_xtables.h

@@ -60,7 +60,7 @@
 #	define init_net__proc_net     init_net.proc_net
 #endif
 
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
 #	define xt_match              xtnu_match
 #	define xt_register_match     xtnu_register_match
 #	define xt_unregister_match   xtnu_unregister_match
@@ -78,6 +78,20 @@
 #	define inet_proto_csum_replace4 xtnu_proto_csum_replace4
 #endif
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 34)
+#	define ipt_unregister_table(tbl) ipt_unregister_table(&init_net, (tbl))
+#	define ip6t_unregister_table(tbl) ip6t_unregister_table(&init_net, (tbl))
+#else
+#	define ipt_unregister_table(tbl) ipt_unregister_table(tbl)
+#	define ip6t_unregister_table(tbl) ip6t_unregister_table(tbl)
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)
+#	define rt_dst(rt)	(&(rt)->dst)
+#else
+#	define rt_dst(rt)	(&(rt)->u.dst)
+#endif
+
 #if !defined(NIP6) && !defined(NIP6_FMT)
 #	define NIP6(addr) \
 		ntohs((addr).s6_addr16[0]), \

extensions/compat_xtnu.h

@@ -32,16 +32,6 @@ enum {
 	NFPROTO_NUMPROTO,
 };
 
-struct xt_match_param {
-	const struct net_device *in, *out;
-	const struct xt_match *match;
-	const void *matchinfo;
-	int fragoff;
-	unsigned int thoff;
-	bool *hotdrop;
-	u_int8_t family;
-};
-
 struct xt_mtchk_param {
 	const char *table;
 	const void *entryinfo;
@@ -81,33 +71,52 @@ struct xt_tgdtor_param {
 };
 #endif
 
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+struct xt_action_param {
+	union {
+		const struct xt_match *match;
+		const struct xt_target *target;
+	};
+	union {
+		const void *matchinfo, *targinfo;
+	};
+	const struct net_device *in, *out;
+	int fragoff;
+	unsigned int thoff, hooknum;
+	u_int8_t family;
+	bool hotdrop;
+};
+#endif
+
 struct xtnu_match {
-	struct list_head list;
-	char name[XT_FUNCTION_MAXNAMELEN - 1 - sizeof(void *)];
-	bool (*match)(const struct sk_buff *, const struct xt_match_param *);
-	bool (*checkentry)(const struct xt_mtchk_param *);
+	/*
+	 * Making it smaller by sizeof(void *) on purpose to catch
+	 * lossy translation, if any.
+	 */
+	char name[sizeof(((struct xt_match *)NULL)->name) - 1 - sizeof(void *)];
+	uint8_t revision;
+	bool (*match)(const struct sk_buff *, struct xt_action_param *);
+	int (*checkentry)(const struct xt_mtchk_param *);
 	void (*destroy)(const struct xt_mtdtor_param *);
 	struct module *me;
 	const char *table;
 	unsigned int matchsize, hooks;
 	unsigned short proto, family;
-	uint8_t revision;
 
 	void *__compat_match;
 };
 
 struct xtnu_target {
-	struct list_head list;
-	char name[XT_FUNCTION_MAXNAMELEN - 1 - sizeof(void *)];
+	char name[sizeof(((struct xt_target *)NULL)->name) - 1 - sizeof(void *)];
+	uint8_t revision;
 	unsigned int (*target)(struct sk_buff **,
-		const struct xt_target_param *);
-	bool (*checkentry)(const struct xt_tgchk_param *);
+		const struct xt_action_param *);
+	int (*checkentry)(const struct xt_tgchk_param *);
 	void (*destroy)(const struct xt_tgdtor_param *);
 	struct module *me;
 	const char *table;
 	unsigned int targetsize, hooks;
 	unsigned short proto, family;
-	uint8_t revision;
 
 	void *__compat_target;
 };
@@ -154,4 +163,6 @@ extern void xtnu_proto_csum_replace4(__u16 __bitwise *, struct sk_buff *,
 	__be32, __be32, bool);
 extern int xtnu_skb_linearize(struct sk_buff *);
 
+extern void *HX_memmem(const void *, size_t, const void *, size_t);
+
 #endif /* _COMPAT_XTNU_H */

extensions/ipset/Kbuild

@@ -3,4 +3,5 @@
 obj-m += ipt_set.o ipt_SET.o
 obj-m += ip_set.o ip_set_ipmap.o ip_set_portmap.o ip_set_macipmap.o
 obj-m += ip_set_iphash.o ip_set_nethash.o ip_set_ipporthash.o
+obj-m += ip_set_ipportiphash.o ip_set_ipportnethash.o
 obj-m += ip_set_iptree.o ip_set_iptreemap.o ip_set_setlist.o

extensions/ipset/ip_set.c

@@ -929,11 +929,11 @@ ip_set_sockfn_set(struct sock *sk, int optval, void *user, unsigned int len)
 	}
 	if (copy_from_user(data, user, len) != 0) {
 		res = -EFAULT;
-		goto done;
+		goto cleanup;
 	}
 	if (down_interruptible(&ip_set_app_mutex)) {
 		res = -EINTR;
-		goto done;
+		goto cleanup;
 	}
 
 	op = (unsigned *)data;
@@ -1109,6 +1109,7 @@ ip_set_sockfn_set(struct sock *sk, int optval, void *user, unsigned int len)
 
     done:
 	up(&ip_set_app_mutex);
+    cleanup:
 	vfree(data);
 	if (res > 0)
 		res = 0;
@@ -1142,11 +1143,11 @@ ip_set_sockfn_get(struct sock *sk, int optval, void *user, int *len)
 	}
 	if (copy_from_user(data, user, *len) != 0) {
 		res = -EFAULT;
-		goto done;
+		goto cleanup;
 	}
 	if (down_interruptible(&ip_set_app_mutex)) {
 		res = -EINTR;
-		goto done;
+		goto cleanup;
 	}
 
 	op = (unsigned *) data;
@@ -1439,6 +1440,7 @@ ip_set_sockfn_get(struct sock *sk, int optval, void *user, int *len)
     	
     done:
 	up(&ip_set_app_mutex);
+    cleanup:
 	vfree(data);
 	if (res > 0)
 		res = 0;

extensions/ipset/ip_set_ipporthash.c

@@ -68,7 +68,7 @@ ipporthash_test(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t port)
 	if (flags[1] == 0)					\
 		return 0;					\
 								\
-	port = get_port(skb, flags++);				\
+	port = get_port(skb, ++flags);				\
 								\
 	if (port == INVALID_PORT)				\
 		return 0;

extensions/ipset/ip_set_ipportiphash.c

@@ -72,8 +72,8 @@ ipportiphash_test(struct ip_set *set,
 	if (flags[2] == 0)					\
 		return 0;					\
 								\
-	port = get_port(skb, flags++);				\
-	ip1 = ipaddr(skb, flags++);				\
+	port = get_port(skb, ++flags);				\
+	ip1 = ipaddr(skb, ++flags);				\
 								\
 	if (port == INVALID_PORT)				\
 		return 0;

extensions/ipset/ip_set_ipportnethash.c

@@ -116,8 +116,8 @@ ipportnethash_utest(struct ip_set *set, const void *data, u_int32_t size)
 	if (flags[2] == 0)					\
 		return 0;					\
 								\
-	port = get_port(skb, flags++);				\
-	ip1 = ipaddr(skb, flags++);				\
+	port = get_port(skb, ++flags);				\
+	ip1 = ipaddr(skb, ++flags);				\
 								\
 	if (port == INVALID_PORT)				\
 		return 0;
@@ -185,7 +185,6 @@ ipportnethash_add(struct ip_set *set,
 	if (ret == 0) {
 		if (!map->nets[cidr-1]++)
 			add_cidr_size(map->cidr, cidr);
-		map->elements++;
 	}
 	return ret;
 }

extensions/ipset/ip_set_nethash.c

@@ -136,7 +136,6 @@ nethash_add(struct ip_set *set, ip_set_ip_t ip, uint8_t cidr)
 	if (ret == 0) {
 		if (!map->nets[cidr-1]++)
 			add_cidr_size(map->cidr, cidr);
-		map->elements++;
 	}
 	
 	return ret;

extensions/ipset/ipset.8

@@ -502,9 +502,13 @@ data storage in
 set and add src to the first single or src,dst to the first double 
 data storage set in
 \fIb\fP.
-.P
 You can imagine a setlist type of set as an ordered union of
 the set elements. 
+.P
+Please note: by the ipset command you can add, delete and
+.B test
+the setnames in a setlist type of set, and not the presence of 
+a set's member (such as an IP address).
 .SH GENERAL RESTRICTIONS
 Setnames starting with colon (:) cannot be defined. Zero valued set 
 entries cannot be used with hash type of sets.

extensions/ipset/ipset.c

@@ -30,7 +30,7 @@
 #define PROC_SYS_MODPROBE "/proc/sys/kernel/modprobe"
 #endif
 
-#define IPSET_VERSION "4.1"
+#define IPSET_VERSION "4.4"
 
 char program_name[] = "ipset";
 char program_version[] = IPSET_VERSION;

extensions/ipset/ipset_iphash.c

@@ -200,8 +200,7 @@ iphash_printips(struct set *set UNUSED, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ip = data + offset;
-		if (*ip)
-			printf("%s\n", ip_tostring(*ip, options));
+		printf("%s\n", ip_tostring(*ip, options));
 		offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
 	}
 }
@@ -230,9 +229,7 @@ iphash_saveips(struct set *set UNUSED, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ip = data + offset;
-		if (*ip)
-			printf("-A %s %s\n", set->name, 
-			       ip_tostring(*ip, options));
+		printf("-A %s %s\n", set->name, ip_tostring(*ip, options));
 		offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
 	}
 }

extensions/ipset/ipset_ipporthash.c

@@ -259,13 +259,11 @@ ipporthash_printips(struct set *set, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ipptr = data + offset;
-		if (*ipptr) {
-			ip = (*ipptr>>16) + mysetdata->first_ip;
-			port = (uint16_t) *ipptr;
-			printf("%s,%s\n", 
-			       ip_tostring(ip, options),
-			       port_tostring(port, options));
-		}
+		ip = (*ipptr>>16) + mysetdata->first_ip;
+		port = (uint16_t) *ipptr;
+		printf("%s,%s\n", 
+		       ip_tostring(ip, options),
+		       port_tostring(port, options));
 		offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
 	}
 }
@@ -296,13 +294,11 @@ ipporthash_saveips(struct set *set, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ipptr = data + offset;
-		if (*ipptr) {
-			ip = (*ipptr>>16) + mysetdata->first_ip;
-			port = (uint16_t) *ipptr;
-			printf("-A %s %s,%s\n", set->name, 
-			       ip_tostring(ip, options),
-			       port_tostring(port, options));
-		}
+		ip = (*ipptr>>16) + mysetdata->first_ip;
+		port = (uint16_t) *ipptr;
+		printf("-A %s %s,%s\n", set->name, 
+		       ip_tostring(ip, options),
+		       port_tostring(port, options));
 		offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
 	}
 }

extensions/ipset/ipset_ipportiphash.c

@@ -265,15 +265,13 @@ ipportiphash_printips(struct set *set, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ipptr = data + offset;
-		if (ipptr->ip && ipptr->ip1) {
-			ip = (ipptr->ip>>16) + mysetdata->first_ip;
-			port = (uint16_t) ipptr->ip;
-			printf("%s,%s,", 
-			       ip_tostring(ip, options),
-			       port_tostring(port, options));
-			printf("%s\n", 
-			       ip_tostring(ipptr->ip1, options));
-		}
+		ip = (ipptr->ip>>16) + mysetdata->first_ip;
+		port = (uint16_t) ipptr->ip;
+		printf("%s,%s,", 
+		       ip_tostring(ip, options),
+		       port_tostring(port, options));
+		printf("%s\n", 
+		       ip_tostring(ipptr->ip1, options));
 		offset += IPSET_VALIGN(sizeof(struct ipportip), dont_align);
 	}
 }
@@ -305,15 +303,13 @@ ipportiphash_saveips(struct set *set, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ipptr = data + offset;
-		if (ipptr->ip && ipptr->ip1) {
-			ip = (ipptr->ip>>16) + mysetdata->first_ip;
-			port = (uint16_t) ipptr->ip;
-			printf("-A %s %s,%s,", set->name, 
-			       ip_tostring(ip, options),
-			       port_tostring(port, options));
-			printf("%s\n",
-			       ip_tostring(ipptr->ip1, options));
-		}
+		ip = (ipptr->ip>>16) + mysetdata->first_ip;
+		port = (uint16_t) ipptr->ip;
+		printf("-A %s %s,%s,", set->name, 
+		       ip_tostring(ip, options),
+		       port_tostring(port, options));
+		printf("%s\n",
+		       ip_tostring(ipptr->ip1, options));
 		offset += IPSET_VALIGN(sizeof(struct ipportip), dont_align);
 	}
 }

extensions/ipset/ipset_ipportnethash.c

@@ -330,15 +330,13 @@ ipportnethash_printips(struct set *set, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ipptr = data + offset;
-		if (ipptr->ip || ipptr->ip1) {
-			ip = (ipptr->ip>>16) + mysetdata->first_ip;
-			port = (uint16_t) ipptr->ip;
-			printf("%s,%s,", 
-			       ip_tostring(ip, options),
-			       port_tostring(port, options));
-			printf("%s\n", 
-			       unpack_ip_tostring(ipptr->ip1, options));
-		}
+		ip = (ipptr->ip>>16) + mysetdata->first_ip;
+		port = (uint16_t) ipptr->ip;
+		printf("%s,%s,", 
+		       ip_tostring(ip, options),
+		       port_tostring(port, options));
+		printf("%s\n", 
+		       unpack_ip_tostring(ipptr->ip1, options));
 		offset += IPSET_VALIGN(sizeof(struct ipportip), dont_align);
 	}
 }
@@ -370,15 +368,13 @@ ipportnethash_saveips(struct set *set, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ipptr = data + offset;
-		if (ipptr) {
-			ip = (ipptr->ip>>16) + mysetdata->first_ip;
-			port = (uint16_t) ipptr->ip;
-			printf("-A %s %s,%s,", set->name, 
-			       ip_tostring(ip, options),
-			       port_tostring(port, options));
-			printf("%s\n",
-			       unpack_ip_tostring(ipptr->ip, options));
-		}
+		ip = (ipptr->ip>>16) + mysetdata->first_ip;
+		port = (uint16_t) ipptr->ip;
+		printf("-A %s %s,%s,", set->name, 
+		       ip_tostring(ip, options),
+		       port_tostring(port, options));
+		printf("%s\n",
+		       unpack_ip_tostring(ipptr->ip, options));
 		offset += IPSET_VALIGN(sizeof(struct ipportip), dont_align);
 	}
 }

extensions/ipset/ipset_nethash.c

@@ -232,8 +232,7 @@ nethash_printips(struct set *set UNUSED, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ip = data + offset;
-		if (*ip)
-			printf("%s\n", unpack_ip_tostring(*ip, options));
+		printf("%s\n", unpack_ip_tostring(*ip, options));
 		offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
 	}
 }
@@ -258,9 +257,8 @@ nethash_saveips(struct set *set UNUSED, void *data, u_int32_t len,
 
 	while (offset < len) {
 		ip = data + offset;
-		if (*ip)
-			printf("-A %s %s\n", set->name, 
-			       unpack_ip_tostring(*ip, options));
+		printf("-A %s %s\n", set->name,
+		       unpack_ip_tostring(*ip, options));
 		offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
 	}
 }

extensions/ipset/ipt_SET.c

@@ -29,7 +29,7 @@
 #include "../compat_xtables.h"
 
 static unsigned int
-target(struct sk_buff **pskb, const struct xt_target_param *par)
+target(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct ipt_set_info_target *info = par->targinfo;
 
@@ -45,7 +45,7 @@ target(struct sk_buff **pskb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
-static bool
+static int
 checkentry(const struct xt_tgchk_param *par)
 {
 	struct ipt_set_info_target *info = par->targinfo;
@@ -54,7 +54,7 @@ checkentry(const struct xt_tgchk_param *par)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
 	if (targinfosize != IPT_ALIGN(sizeof(*info))) {
 		DP("bad target info size %u", targinfosize);
-		return 0;
+		return -EINVAL;
 	}
 #endif
 
@@ -63,7 +63,7 @@ checkentry(const struct xt_tgchk_param *par)
 		if (index == IP_SET_INVALID_ID) {
 			ip_set_printk("cannot find add_set index %u as target",
 				      info->add_set.index);
-			return 0;	/* error */
+			return -EINVAL;
 		}
 	}
 
@@ -72,16 +72,16 @@ checkentry(const struct xt_tgchk_param *par)
 		if (index == IP_SET_INVALID_ID) {
 			ip_set_printk("cannot find del_set index %u as target",
 				      info->del_set.index);
-			return 0;	/* error */
+			return -EINVAL;
 		}
 	}
 	if (info->add_set.flags[IP_SET_MAX_BINDINGS] != 0
 	    || info->del_set.flags[IP_SET_MAX_BINDINGS] != 0) {
 		ip_set_printk("That's nasty!");
-		return 0;	/* error */
+		return -EINVAL;
 	}
 
-	return 1;
+	return 0;
 }
 
 static void destroy(const struct xt_tgdtor_param *par)

extensions/ipset/ipt_set.c

@@ -38,7 +38,7 @@ match_set(const struct ipt_set_info *info,
 }
 
 static bool
-match(const struct sk_buff *skb, const struct xt_match_param *par)
+match(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	const struct ipt_set_info_match *info = par->matchinfo;
 		
@@ -47,7 +47,7 @@ match(const struct sk_buff *skb, const struct xt_match_param *par)
 			 info->match_set.flags[0] & IPSET_MATCH_INV);
 }
 
-static bool
+static int
 checkentry(const struct xt_mtchk_param *par)
 {
 	struct ipt_set_info_match *info = par->matchinfo;
@@ -56,7 +56,7 @@ checkentry(const struct xt_mtchk_param *par)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
 	if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) {
 		ip_set_printk("invalid matchsize %d", matchsize);
-		return 0;
+		return -EINVAL;
 	}
 #endif
 
@@ -65,14 +65,14 @@ checkentry(const struct xt_mtchk_param *par)
 	if (index == IP_SET_INVALID_ID) {
 		ip_set_printk("Cannot find set indentified by id %u to match",
 			      info->match_set.index);
-		return 0;	/* error */
+		return -ENOENT;
 	}
 	if (info->match_set.flags[IP_SET_MAX_BINDINGS] != 0) {
 		ip_set_printk("That's nasty!");
-		return 0;	/* error */
+		return -EINVAL;
 	}
 
-	return 1;
+	return 0;
 }
 
 static void destroy(const struct xt_mtdtor_param *par)

extensions/libxt_CHAOS.c

@@ -16,6 +16,7 @@
 #include <xtables.h>
 #include <linux/netfilter/x_tables.h>
 #include "xt_CHAOS.h"
+#include "compat_user.h"
 
 enum {
 	F_DELUDE = 1 << 0,
@@ -95,7 +96,7 @@ static void chaos_tg_save(const void *ip, const struct xt_entry_target *target)
 static struct xtables_target chaos_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "CHAOS",
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_chaos_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_chaos_tginfo)),
 	.help          = chaos_tg_help,

extensions/libxt_CHECKSUM.c

@@ -0,0 +1,94 @@
+/*
+ * (C) 2002 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010 by Red Hat, Inc
+ * Author: Michael S. Tsirkin <mst@redhat.com>
+ *
+ * This program is distributed under the terms of GNU GPL v2, 1991
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <xtables.h>
+#include "xt_CHECKSUM.h"
+#include "compat_user.h"
+
+static void CHECKSUM_help(void)
+{
+	printf(
+"CHECKSUM target options\n"
+"  --checksum-fill        Fill in packet checksum.\n");
+}
+
+static const struct option CHECKSUM_opts[] = {
+	{ "checksum-fill", 0, NULL, 'F' },
+	{ .name = NULL }
+};
+
+static int CHECKSUM_parse(int c, char **argv, int invert, unsigned int *flags,
+                     const void *entry, struct xt_entry_target **target)
+{
+	struct xt_CHECKSUM_info *einfo
+		= (struct xt_CHECKSUM_info *)(*target)->data;
+
+	switch (c) {
+	case 'F':
+		xtables_param_act(XTF_ONLY_ONCE, "CHECKSUM", "--checksum-fill",
+			*flags & XT_CHECKSUM_OP_FILL);
+		einfo->operation = XT_CHECKSUM_OP_FILL;
+		*flags |= XT_CHECKSUM_OP_FILL;
+		break;
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
+static void CHECKSUM_check(unsigned int flags)
+{
+	if (!flags)
+		xtables_error(PARAMETER_PROBLEM,
+		           "CHECKSUM target: Parameter --checksum-fill is required");
+}
+
+static void CHECKSUM_print(const void *ip, const struct xt_entry_target *target,
+                      int numeric)
+{
+	const struct xt_CHECKSUM_info *einfo =
+		(const struct xt_CHECKSUM_info *)target->data;
+
+	printf("CHECKSUM ");
+
+	if (einfo->operation & XT_CHECKSUM_OP_FILL)
+		printf("fill ");
+}
+
+static void CHECKSUM_save(const void *ip, const struct xt_entry_target *target)
+{
+	const struct xt_CHECKSUM_info *einfo =
+		(const struct xt_CHECKSUM_info *)target->data;
+
+	if (einfo->operation & XT_CHECKSUM_OP_FILL)
+		printf("--checksum-fill ");
+}
+
+static struct xtables_target checksum_tg_reg = {
+	.name          = "CHECKSUM",
+	.version       = XTABLES_VERSION,
+	.family        = NFPROTO_UNSPEC,
+	.size          = XT_ALIGN(sizeof(struct xt_CHECKSUM_info)),
+	.userspacesize = XT_ALIGN(sizeof(struct xt_CHECKSUM_info)),
+	.help          = CHECKSUM_help,
+	.parse         = CHECKSUM_parse,
+	.final_check   = CHECKSUM_check,
+	.print         = CHECKSUM_print,
+	.save          = CHECKSUM_save,
+	.extra_opts    = CHECKSUM_opts,
+};
+
+static __attribute__((constructor)) void _init(void)
+{
+	xtables_register_target(&checksum_tg_reg);
+}

extensions/libxt_CHECKSUM.man

@@ -0,0 +1,8 @@
+This target allows to selectively work around broken/old applications.
+It can only be used in the mangle table.
+.TP
+\fB\-\-checksum\-fill\fP
+Compute and fill in the checksum in a packet that lacks a checksum.
+This is particularly useful, if you need to work around old applications
+such as dhcp clients, that do not work well with checksum offloads,
+but don't want to disable checksum offload in your device.

extensions/libxt_DELUDE.c

@@ -13,6 +13,7 @@
 
 #include <xtables.h>
 #include <linux/netfilter/x_tables.h>
+#include "compat_user.h"
 
 static void delude_tg_help(void)
 {
@@ -33,9 +34,7 @@ static struct xtables_target delude_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "DELUDE",
 	.revision      = 0,
-	.family        = AF_INET,
-	.size          = XT_ALIGN(0),
-	.userspacesize = XT_ALIGN(0),
+	.family        = NFPROTO_IPV4,
 	.help          = delude_tg_help,
 	.parse         = delude_tg_parse,
 	.final_check   = delude_tg_check,

extensions/libxt_DHCPMAC.c

@@ -17,6 +17,7 @@
 #include <xtables.h>
 #include "xt_DHCPMAC.h"
 #include "mac.c"
+#include "compat_user.h"
 
 enum {
 	F_MAC = 1 << 0,
@@ -84,7 +85,7 @@ static struct xtables_target dhcpmac_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "DHCPMAC",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.help          = dhcpmac_tg_help,

extensions/libxt_ECHO.c

@@ -10,6 +10,7 @@
 #include <stdio.h>
 #include <getopt.h>
 #include <xtables.h>
+#include "compat_user.h"
 
 static void echo_tg_help(void)
 {
@@ -29,9 +30,7 @@ static void echo_tg_check(unsigned int flags)
 static struct xtables_target echo_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "ECHO",
-	.family        = AF_UNSPEC,
-	.size          = XT_ALIGN(0),
-	.userspacesize = XT_ALIGN(0),
+	.family        = NFPROTO_UNSPEC,
 	.help          = echo_tg_help,
 	.parse         = echo_tg_parse,
 	.final_check   = echo_tg_check,

extensions/libxt_IPMARK.c

@@ -14,6 +14,7 @@
 #include <string.h>
 #include <xtables.h>
 #include "xt_IPMARK.h"
+#include "compat_user.h"
 
 enum {
 	FL_ADDR_USED     = 1 << 0,
@@ -151,7 +152,7 @@ ipmark_tg_save(const void *entry, const struct xt_entry_target *target)
 static struct xtables_target ipmark_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "IPMARK",
-	.family        = PF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.revision      = 1,
 	.size          = XT_ALIGN(sizeof(struct xt_ipmark_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_ipmark_tginfo)),

extensions/libxt_LOGMARK.c

@@ -13,6 +13,7 @@
 #include <string.h>
 #include <xtables.h>
 #include "xt_LOGMARK.h"
+#include "compat_user.h"
 
 enum {
 	F_LEVEL  = 1 << 0,
@@ -100,7 +101,7 @@ static struct xtables_target logmark_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "LOGMARK",
 	.revision      = 0,
-	.family        = AF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.size          = XT_ALIGN(sizeof(struct xt_logmark_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_logmark_tginfo)),
 	.help          = logmark_tg_help,

extensions/libxt_RAWDNAT.c

@@ -15,6 +15,7 @@
 #include <xtables.h>
 #include <linux/netfilter.h>
 #include "xt_RAWNAT.h"
+#include "compat_user.h"
 
 enum {
 	FLAGS_TO = 1 << 0,
@@ -79,7 +80,7 @@ rawdnat_tg6_parse(int c, char **argv, int invert, unsigned int *flags,
 		end = strchr(optarg, '/');
 		if (end != NULL) {
 			*end++ = '\0';
-			if (!xtables_strtoui(end, NULL, &mask, 0, 32))
+			if (!xtables_strtoui(end, NULL, &mask, 0, 128))
 				xtables_param_act(XTF_BAD_VALUE, "RAWDNAT",
 					"--to-destination", optarg);
 			info->mask = mask;
@@ -154,7 +155,7 @@ static struct xtables_target rawdnat_tg4_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWDNAT",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawdnat_tg_help,
@@ -169,7 +170,7 @@ static struct xtables_target rawdnat_tg6_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWDNAT",
 	.revision      = 0,
-	.family        = PF_INET6,
+	.family        = NFPROTO_IPV6,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawdnat_tg_help,

extensions/libxt_RAWSNAT.c

@@ -15,6 +15,7 @@
 #include <xtables.h>
 #include <linux/netfilter.h>
 #include "xt_RAWNAT.h"
+#include "compat_user.h"
 
 enum {
 	FLAGS_TO = 1 << 0,
@@ -79,7 +80,7 @@ rawsnat_tg6_parse(int c, char **argv, int invert, unsigned int *flags,
 		end = strchr(optarg, '/');
 		if (end != NULL) {
 			*end++ = '\0';
-			if (!xtables_strtoui(end, NULL, &mask, 0, 32))
+			if (!xtables_strtoui(end, NULL, &mask, 0, 128))
 				xtables_param_act(XTF_BAD_VALUE, "RAWSNAT",
 					"--to-source", optarg);
 			info->mask = mask;
@@ -154,7 +155,7 @@ static struct xtables_target rawsnat_tg4_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWSNAT",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawsnat_tg_help,
@@ -169,7 +170,7 @@ static struct xtables_target rawsnat_tg6_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWSNAT",
 	.revision      = 0,
-	.family        = PF_INET6,
+	.family        = NFPROTO_IPV6,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawsnat_tg_help,

extensions/libxt_STEAL.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <xtables.h>
+#include "compat_user.h"
 
 static void steal_tg_help(void)
 {
@@ -19,9 +20,7 @@ static void steal_tg_check(unsigned int flags)
 static struct xtables_target steal_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "STEAL",
-	.family        = AF_UNSPEC,
-	.size          = XT_ALIGN(0),
-	.userspacesize = XT_ALIGN(0),
+	.family        = NFPROTO_UNSPEC,
 	.help          = steal_tg_help,
 	.parse         = steal_tg_parse,
 	.final_check   = steal_tg_check,

extensions/libxt_SYSRQ.c

@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <getopt.h>
 #include <xtables.h>
+#include "compat_user.h"
 
 static void sysrq_tg_help(void)
 {
@@ -25,9 +26,7 @@ static struct xtables_target sysrq_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "SYSRQ",
 	.revision      = 1,
-	.family        = PF_UNSPEC,
-	.size          = XT_ALIGN(0),
-	.userspacesize = XT_ALIGN(0),
+	.family        = NFPROTO_UNSPEC,
 	.help          = sysrq_tg_help,
 	.parse         = sysrq_tg_parse,
 	.final_check   = sysrq_tg_check,

extensions/libxt_TARPIT.c

@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <getopt.h>
 #include <xtables.h>
+#include "compat_user.h"
 
 static void tarpit_tg_help(void)
 {
@@ -24,9 +25,7 @@ static void tarpit_tg_check(unsigned int flags)
 static struct xtables_target tarpit_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "TARPIT",
-	.family        = AF_INET,
-	.size          = XT_ALIGN(0),
-	.userspacesize = XT_ALIGN(0),
+	.family        = NFPROTO_IPV4,
 	.help          = tarpit_tg_help,
 	.parse         = tarpit_tg_parse,
 	.final_check   = tarpit_tg_check,

extensions/libxt_TEE.c

@@ -23,6 +23,7 @@
 #include <linux/netfilter.h>
 #include <linux/netfilter/x_tables.h>
 #include "xt_TEE.h"
+#include "compat_user.h"
 
 enum {
 	FLAG_GATEWAY = 1 << 0,
@@ -138,7 +139,7 @@ static struct xtables_target tee_tg_reg = {
 	.name          = "TEE",
 	.version       = XTABLES_VERSION,
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.help          = tee_tg_help,
@@ -153,7 +154,7 @@ static struct xtables_target tee_tg6_reg = {
 	.name          = "TEE",
 	.version       = XTABLES_VERSION,
 	.revision      = 0,
-	.family        = PF_INET6,
+	.family        = NFPROTO_IPV6,
 	.size          = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.help          = tee_tg_help,

extensions/libxt_condition.c

@@ -16,6 +16,7 @@
 #include <getopt.h>
 #include <xtables.h>
 #include "xt_condition.h"
+#include "compat_user.h"
 
 static void condition_help(void)
 {
@@ -80,7 +81,7 @@ static void condition_save(const void *ip, const struct xt_entry_match *match)
 static struct xtables_match condition_mt_reg = {
 	.name 		= "condition",
 	.revision	= 1,
-	.family		= PF_UNSPEC,
+	.family		= NFPROTO_UNSPEC,
 	.version 	= XTABLES_VERSION,
 	.size 		= XT_ALIGN(sizeof(struct xt_condition_mtinfo)),
 	.userspacesize 	= XT_ALIGN(sizeof(struct xt_condition_mtinfo)),

extensions/libxt_dhcpmac.c

@@ -16,6 +16,7 @@
 #include <xtables.h>
 #include "xt_DHCPMAC.h"
 #include "mac.c"
+#include "compat_user.h"
 
 enum {
 	F_MAC = 1 << 0,
@@ -85,7 +86,7 @@ static struct xtables_match dhcpmac_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "dhcpmac",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.help          = dhcpmac_mt_help,

extensions/libxt_fuzzy.c

@@ -15,6 +15,7 @@
 #include <string.h>
 #include <xtables.h>
 #include "xt_fuzzy.h"
+#include "compat_user.h"
 
 static void fuzzy_mt_help(void)
 {
@@ -103,6 +104,7 @@ static struct xtables_match fuzzy_mt_reg = {
 	.name          = "fuzzy",
 	.revision      = 1,
 	.version       = XTABLES_VERSION,
+	.family        = NFPROTO_UNSPEC,
 	.size          = XT_ALIGN(sizeof(struct xt_fuzzy_mtinfo)),
 	.userspacesize = offsetof(struct xt_fuzzy_mtinfo, packets_total),
 	.help          = fuzzy_mt_help,

extensions/libxt_geoip.c

@@ -24,6 +24,7 @@
 #include <unistd.h>
 #include <xtables.h>
 #include "xt_geoip.h"
+#include "compat_user.h"
 #define GEOIP_DB_DIR "/usr/share/xt_geoip"
 
 static void geoip_help(void)
@@ -259,7 +260,7 @@ geoip_save(const void *ip, const struct xt_entry_match *match)
 }
 
 static struct xtables_match geoip_match = {
-	 .family        = AF_INET,
+	 .family        = NFPROTO_IPV4,
 	 .name          = "geoip",
 	 .revision      = 1,
 	 .version       = XTABLES_VERSION,

extensions/libxt_geoip.man

@@ -10,8 +10,8 @@ NOTE:
 The country is inputed by its ISO-3166 code.
 .PP
 The extra files you will need is the binary database files. They are generated
-from a country-subnet database with the geoip_csv_iv0.pl tool, available at
-http://jengelh.hopto.org/files/geoip/ . The files MUST be moved to
-/usr/share/xt_geoip/
+from a country-subnet database with the geoip_csv_iv0.pl tool that should be
+available in /usr/lib(exec)/xtables-addons/ . The resulting files MUST be moved
+to /usr/share/xt_geoip/
 as the shared library is statically looking for this pathname (e.g.
 /usr/share/xt_geoip/LE/de.iv0).

extensions/libxt_gradm.c

@@ -0,0 +1,98 @@
+/*
+ *	"gradm" match extension for iptables
+ *	Zbigniew Krzystolik <zbyniu@destrukcja.pl>, 2010
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License;
+ *	either version 2 of the License, or any later version, as
+ *	published by the Free Software Foundation.
+ */
+#include <getopt.h>
+#include <netdb.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <xtables.h>
+#include "xt_gradm.h"
+
+static void gradm_mt_help(void)
+{
+	printf(
+"gradm match options:\n"
+" [!] --enabled    is Grsecurity RBAC enabled\n"
+" [!] --disabled   is Grsecurity RBAC disabled\n");
+};
+
+static const struct option gradm_mt_opts[] = {
+	{.name = "enabled",  .has_arg = false, .val = '1'},
+	{.name = "disabled", .has_arg = false, .val = '2'},
+	{NULL},
+};
+
+static void gradm_mt_init(struct xt_entry_match *m)
+{
+}
+
+static int gradm_mt_parse(int c, char **argv, int invert, unsigned int *flags,
+                          const void *entry, struct xt_entry_match **match)
+{
+	struct xt_gradm_mtinfo *info = (void *)(*match)->data;
+
+	switch (c) {
+	case '1':
+		if (invert)
+			info->invflags |= 1;
+		return true;
+	case '2':
+		if (!invert)
+			info->invflags |= 1;
+		return true;
+	}
+	return false;
+}
+
+static void gradm_mt_check(unsigned int flags)
+{
+}
+
+static void gradm_mt_print(const void *ip, const struct xt_entry_match *match,
+                           int numeric)
+{
+	const struct xt_gradm_mtinfo *info = (const void *)match->data;
+
+	if (info->invflags)
+		printf("gradm: disabled");
+	else
+		printf("gradm: enabled");
+}
+
+static void gradm_mt_save(const void *ip, const struct xt_entry_match *match)
+{
+	const struct xt_gradm_mtinfo *info = (const void *)match->data;
+
+	if (info->invflags)
+		printf("--disabled ");
+	else
+		printf("--enabled ");
+}
+
+static struct xtables_match gradm_mt_reg = { 
+	.family        = NFPROTO_UNSPEC,
+	.name          = "gradm",
+	.version       = XTABLES_VERSION,
+	.size          = XT_ALIGN(sizeof(struct xt_gradm_mtinfo)),
+	.userspacesize = XT_ALIGN(sizeof(struct xt_gradm_mtinfo)),
+	.help          = gradm_mt_help,
+	.init          = gradm_mt_init,
+	.parse         = gradm_mt_parse,
+	.final_check   = gradm_mt_check,
+	.print         = gradm_mt_print,
+	.save          = gradm_mt_save,
+	.extra_opts    = gradm_mt_opts,
+};
+
+static __attribute__((constructor)) void gradm_mt_ldr(void)
+{
+	xtables_register_match(&gradm_mt_reg);
+}

extensions/libxt_gradm.man

@@ -0,0 +1,7 @@
+This module matches packets based on grsecurity RBAC status.
+.TP
+[\fB!\fP] \fB\-\-enabled\fP
+Matches packets if grsecurity RBAC is enabled.
+.TP
+[\fB!\fP] \fB\-\-disabled\fP
+Matches packets if grsecurity RBAC is disabled.

extensions/libxt_iface.c

@@ -15,9 +15,16 @@
 
 #include <xtables.h>
 #include "xt_iface.h"
+#include "compat_user.h"
+
+enum {
+	XT_IFACE_IFACE = 1 << 16,
+};
 
 static const struct option iface_mt_opts[] = {
 	{.name = "iface",        .has_arg = true,  .val = 'i'},
+	{.name = "dev-in",       .has_arg = false, .val = 'I'},
+	{.name = "dev-out",      .has_arg = false, .val = 'O'},
 	{.name = "up",           .has_arg = false, .val = 'u'},
 	{.name = "down",         .has_arg = false, .val = 'U'}, /* not up */
 	{.name = "broadcast",    .has_arg = false, .val = 'b'},
@@ -39,9 +46,7 @@ static void iface_print_opt(const struct xt_iface_mtinfo *info,
     const unsigned int option, const char *command)
 {
 	if (info->flags & option)
-		printf(" %s", command);
-	if (info->invflags & option)
-		printf(" ! %s", command);
+		printf(" %s%s", (info->invflags & option) ? "! " : "", command);
 }
 
 static void iface_setflag(struct xt_iface_mtinfo *info,
@@ -50,10 +55,9 @@ static void iface_setflag(struct xt_iface_mtinfo *info,
 	if (*flags & flag)
 		xtables_error(PARAMETER_PROBLEM,
 			"iface: \"--%s\" flag already specified", command);
+	info->flags |= flag;
 	if (invert)
 		info->invflags |= flag;
-	else
-		info->flags |= flag;
 	*flags |= flag;
 }
 
@@ -68,19 +72,20 @@ static void iface_mt_help(void)
 {
 	printf(
 	"iface match options:\n"
-	"    --iface interface    Name of interface\n"
-	"[!] --up / --down        match if UP flag (not) set\n"
-	"[!] --broadcast          match if BROADCAST flag (not) set\n"
-	"[!] --loopback           match if LOOPBACK flag (not) set\n"
+	"    --iface interface     Name of interface\n"
+	"    --dev-in / --dev-out  Use incoming/outgoing interface instead\n"
+	"[!] --up / --down         match if UP flag (not) set\n"
+	"[!] --broadcast           match if BROADCAST flag (not) set\n"
+	"[!] --loopback            match if LOOPBACK flag (not) set\n"
 	"[!] --pointopoint\n"
-	"[!] --pointtopoint       match if POINTOPOINT flag (not) set\n"
-	"[!] --running            match if RUNNING flag (not) set\n"
-	"[!] --noarp / --arp      match if NOARP flag (not) set\n"
-	"[!] --promisc            match if PROMISC flag (not) set\n"
-	"[!] --multicast          match if MULTICAST flag (not) set\n"
-	"[!] --dynamic            match if DYNAMIC flag (not) set\n"
-	"[!] --lower-up           match if LOWER_UP flag (not) set\n"
-	"[!] --dormant            match if DORMANT flag (not) set\n");
+	"[!] --pointtopoint        match if POINTOPOINT flag (not) set\n"
+	"[!] --running             match if RUNNING flag (not) set\n"
+	"[!] --noarp / --arp       match if NOARP flag (not) set\n"
+	"[!] --promisc             match if PROMISC flag (not) set\n"
+	"[!] --multicast           match if MULTICAST flag (not) set\n"
+	"[!] --dynamic             match if DYNAMIC flag (not) set\n"
+	"[!] --lower-up            match if LOWER_UP flag (not) set\n"
+	"[!] --dormant             match if DORMANT flag (not) set\n");
 }
 
 static int iface_mt_parse(int c, char **argv, int invert, unsigned int *flags,
@@ -110,6 +115,18 @@ static int iface_mt_parse(int c, char **argv, int invert, unsigned int *flags,
 		strcpy(info->ifname, optarg);
 		*flags |= XT_IFACE_IFACE;
 		return true;
+	case 'I': /* --dev-in */
+		xtables_param_act(XTF_ONLY_ONCE, "iface", "--dev-in",
+			*flags & XT_IFACE_IFACE);
+		*flags |= XT_IFACE_IFACE;
+		iface_setflag(info, flags, invert, XT_IFACE_DEV_IN, "dev-in");
+		return true;
+	case 'O': /* --dev-out */
+		xtables_param_act(XTF_ONLY_ONCE, "iface", "--dev-out",
+			*flags & XT_IFACE_IFACE);
+		*flags |= XT_IFACE_IFACE;
+		iface_setflag(info, flags, invert, XT_IFACE_DEV_OUT, "dev-out");
+		return true;
 	case 'u': /* UP */
 		iface_setflag(info, flags, invert, XT_IFACE_UP, "up");
 		return true;
@@ -152,7 +169,8 @@ static void iface_mt_check(unsigned int flags)
 	if (!(flags & XT_IFACE_IFACE))
 		xtables_error(PARAMETER_PROBLEM,
 			"iface: You must specify an interface");
-	if (flags == 0 || flags == XT_IFACE_IFACE)
+	if ((flags & ~(XT_IFACE_IFACE | XT_IFACE_DEV_IN |
+	    XT_IFACE_DEV_OUT)) == 0)
 		xtables_error(PARAMETER_PROBLEM,
 			"iface: You must specify at least one option");
 }
@@ -162,7 +180,14 @@ static void iface_mt_print(const void *ip, const struct xt_entry_match *match,
 {
 	const struct xt_iface_mtinfo *info = (const void *)match->data;
 
-	printf("iface: \"%s\" [state:", info->ifname);
+	printf("iface: ");
+	if (info->flags & XT_IFACE_DEV_IN)
+		printf("(in)");
+	else if (info->flags & XT_IFACE_DEV_OUT)
+		printf("(out)");
+	else
+		printf("%s", info->ifname);
+	printf(" [state:");
 	iface_print_opt(info, XT_IFACE_UP,          "up");
 	iface_print_opt(info, XT_IFACE_BROADCAST,   "broadcast");
 	iface_print_opt(info, XT_IFACE_LOOPBACK,    "loopback");
@@ -181,7 +206,12 @@ static void iface_mt_save(const void *ip, const struct xt_entry_match *match)
 {
 	const struct xt_iface_mtinfo *info = (const void *)match->data;
 
-	printf(" --iface %s", info->ifname);
+	if (info->flags & XT_IFACE_DEV_IN)
+		printf("--dev-in");
+	else if (info->flags & XT_IFACE_DEV_OUT)
+		printf("--dev-out");
+	else
+		printf("--iface %s", info->ifname);
 	iface_print_opt(info, XT_IFACE_UP,          "--up");
 	iface_print_opt(info, XT_IFACE_BROADCAST,   "--broadcast");
 	iface_print_opt(info, XT_IFACE_LOOPBACK,    "--loopback");
@@ -200,7 +230,7 @@ static struct xtables_match iface_mt_reg = {
 	.version	= XTABLES_VERSION,
 	.name		= "iface",
 	.revision	= 0,
-	.family		= AF_UNSPEC,
+	.family		= NFPROTO_UNSPEC,
 	.size		= XT_ALIGN(sizeof(struct xt_iface_mtinfo)),
 	.userspacesize	= XT_ALIGN(sizeof(struct xt_iface_mtinfo)),
 	.help		= iface_mt_help,

extensions/libxt_iface.man

@@ -1,7 +1,20 @@
-Allows you to check interface states.
+Allows you to check interface states. First, an interface needs to be selected
+for comparison. Exactly one option of the following three must be specified:
 .TP
 \fB\-\-iface\fP \fIname\fP
-Check the states on the given interface. This option is required.
+Check the states on the given interface.
+.TP
+\fB\-\-dev\-in\fP
+Check the states on the interface on which the packet came in. If the input
+device is not set, because for example you are using \-m iface in the OUTPUT
+chain, this submatch returns false.
+.TP
+\fB\-\-dev\-out\fP
+Check the states on the interface on which the packet will go out. If the
+output device is not set, because for example you are using \-m iface in the
+INPUT chain, this submatch returns false.
+.PP
+Following that, one can select the interface properties to check for:
 .TP
 [\fB!\fP] \fB\-\-up\fP, [\fB!\fP] \fB\-\-down\fP
 Check the UP flag.

extensions/libxt_ipp2p.c

@@ -17,6 +17,7 @@
 #include <ctype.h>
 #include <xtables.h>
 #include "xt_ipp2p.h"
+#include "compat_user.h"
 #define param_act(t, s, f) xtables_param_act((t), "ipp2p", (s), (f))
 
 static void ipp2p_mt_help(void)
@@ -229,7 +230,7 @@ static struct xtables_match ipp2p_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "ipp2p",
 	.revision      = 1,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct ipt_p2p_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct ipt_p2p_info)),
 	.help          = ipp2p_mt_help,

extensions/libxt_ipv4options.c

@@ -14,6 +14,7 @@
 #include <string.h>
 #include <xtables.h>
 #include "xt_ipv4options.h"
+#include "compat_user.h"
 
 /*
  * Overview from http://www.networksorcery.com/enp/protocol/ip.htm
@@ -161,7 +162,7 @@ static struct xtables_match ipv4options_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "ipv4options",
 	.revision      = 1,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
 	.help          = ipv4options_mt_help,

extensions/libxt_length2.c

@@ -5,6 +5,7 @@
 #include <string.h>
 #include <xtables.h>
 #include "xt_length2.h"
+#include "compat_user.h"
 
 enum {
 	F_LAYER  = 1 << 0,
@@ -155,7 +156,7 @@ static struct xtables_match length2_mt_reg = {
 	.version        = XTABLES_VERSION,
 	.name           = "length2",
 	.revision       = 2,
-	.family         = PF_UNSPEC,
+	.family         = NFPROTO_UNSPEC,
 	.size           = XT_ALIGN(sizeof(struct xt_length_mtinfo2)),
 	.userspacesize  = XT_ALIGN(sizeof(struct xt_length_mtinfo2)),
 	.init           = length_mt_init,

extensions/libxt_lscan.c

@@ -17,6 +17,7 @@
 #include <xtables.h>
 #include <linux/netfilter/x_tables.h>
 #include "xt_lscan.h"
+#include "compat_user.h"
 
 static const struct option lscan_mt_opts[] = {
 	{.name = "stealth", .has_arg = false, .val = 'x'},
@@ -105,7 +106,7 @@ static struct xtables_match lscan_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "lscan",
 	.revision      = 0,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_lscan_mtinfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_lscan_mtinfo)),
 	.help          = lscan_mt_help,

extensions/libxt_psd.c

@@ -28,6 +28,7 @@
 #include <xtables.h>
 #include <linux/netfilter/x_tables.h>
 #include "xt_psd.h"
+#include "compat_user.h"
 
 /* Function which prints out usage message. */
 static void psd_mt_help(void) {
@@ -139,7 +140,7 @@ static struct xtables_match psd_mt_reg = {
 	.name			= "psd",
 	.version		= XTABLES_VERSION,
 	.revision   	= 1,
-	.family			= PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size			= XT_ALIGN(sizeof(struct xt_psd_info)),
 	.userspacesize	= XT_ALIGN(sizeof(struct xt_psd_info)),
 	.help			= psd_mt_help,

extensions/libxt_quota2.c

@@ -15,6 +15,7 @@
 #include <string.h>
 #include <xtables.h>
 #include "xt_quota2.h"
+#include "compat_user.h"
 
 enum {
 	FL_QUOTA     = 1 << 0,
@@ -133,7 +134,7 @@ static void quota_mt2_print(const void *ip, const struct xt_entry_match *match,
 }
 
 static struct xtables_match quota_mt2_reg = {
-	.family        = AF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.revision      = 3,
 	.name          = "quota2",
 	.version       = XTABLES_VERSION,

extensions/pknock/libxt_pknock.c

@@ -16,6 +16,7 @@
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv4/ip_tables.h>
 #include "xt_pknock.h"
+#include "compat_user.h"
 
 static const struct option pknock_mt_opts[] = {
 	/* .name, .has_arg, .flag, .val */
@@ -326,7 +327,7 @@ static struct xtables_match pknock_mt_reg = {
 	.name		= "pknock",
 	.version	= XTABLES_VERSION,
 	.revision      = 1,
-	.family		= AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_pknock_mtinfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_pknock_mtinfo)),
 	.help          = pknock_mt_help,

extensions/pknock/xt_pknock.c

@@ -958,7 +958,7 @@ is_close_knock(const struct peer *peer, const struct xt_pknock_mtinfo *info,
 }
 
 static bool pknock_mt(const struct sk_buff *skb,
-    const struct xt_match_param *par)
+    struct xt_action_param *par)
 {
 	const struct xt_pknock_mtinfo *info = par->matchinfo;
 	struct xt_pknock_rule *rule;
@@ -975,7 +975,7 @@ static bool pknock_mt(const struct sk_buff *skb,
 		/* We've been asked to examine this packet, and we
 		 * can't. Hence, no choice but to drop.
 		 */
-		*par->hotdrop = true;
+		par->hotdrop = true;
 		return false;
 	}
 
@@ -1064,9 +1064,9 @@ out:
 	return ret;
 }
 
-#define RETURN_ERR(err) do { printk(KERN_ERR PKNOCK err); return false; } while (false)
+#define RETURN_ERR(err) do { printk(KERN_ERR PKNOCK err); return -EINVAL; } while (false)
 
-static bool pknock_mt_check(const struct xt_mtchk_param *par)
+static int pknock_mt_check(const struct xt_mtchk_param *par)
 {
 	struct xt_pknock_mtinfo *info = par->matchinfo;
 
@@ -1124,9 +1124,10 @@ static bool pknock_mt_check(const struct xt_mtchk_param *par)
 	}
 
 	if (!add_rule(info))
+		/* should ENOMEM here */
 		RETURN_ERR("add_rule() error in checkentry() function.\n");
 
-	return true;
+	return 0;
 }
 
 static void pknock_mt_destroy(const struct xt_mtdtor_param *par)

extensions/xt_CHAOS.c

@@ -45,7 +45,7 @@ static const struct xt_tcp tcp_params = {
 
 /* CHAOS functions */
 static void
-xt_chaos_total(struct sk_buff *skb, const struct xt_target_param *par)
+xt_chaos_total(struct sk_buff *skb, const struct xt_action_param *par)
 {
 	const struct xt_chaos_tginfo *info = par->targinfo;
 	const struct iphdr *iph = ip_hdr(skb);
@@ -62,7 +62,7 @@ xt_chaos_total(struct sk_buff *skb, const struct xt_target_param *par)
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
 	ret = xm_tcp->match(skb, par->in, par->out, xm_tcp, &tcp_params,
 	                    fragoff, thoff, &hotdrop);
-#else
+#elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
 	{
 		struct xt_match_param local_par = {
 			.in        = par->in,
@@ -75,6 +75,19 @@ xt_chaos_total(struct sk_buff *skb, const struct xt_target_param *par)
 		};
 		ret = xm_tcp->match(skb, &local_par);
 	}
+#else
+	{
+		struct xt_action_param local_par;
+		local_par.in        = par->in,
+		local_par.out       = par->out,
+		local_par.match     = xm_tcp;
+		local_par.matchinfo = &tcp_params;
+		local_par.fragoff   = fragoff;
+		local_par.thoff     = thoff;
+		local_par.hotdrop   = false;
+		ret = xm_tcp->match(skb, &local_par);
+		hotdrop = local_par.hotdrop;
+	}
 #endif
 	if (!ret || hotdrop || (unsigned int)net_random() > delude_percentage)
 		return;
@@ -86,17 +99,34 @@ xt_chaos_total(struct sk_buff *skb, const struct xt_target_param *par)
 	destiny->target(&skb, par->in, par->out, par->hooknum, destiny, NULL);
 #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
 	destiny->target(skb, par->in, par->out, par->hooknum, destiny, NULL);
+#elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
+	{
+		struct xt_target_param local_par = {
+			.in       = par->in,
+			.out      = par->out,
+			.hooknum  = par->hooknum,
+			.target   = destiny,
+			.targinfo = par->targinfo,
+			.family   = par->family,
+		};
+		destiny->target(skb, &local_par);
+	}
 #else
 	{
-		struct xt_target_param local_par = *par;
-		local_par.target = destiny;
+		struct xt_action_param local_par;
+		local_par.in       = par->in;
+		local_par.out      = par->out;
+		local_par.hooknum  = par->hooknum;
+		local_par.target   = destiny;
+		local_par.targinfo = par->targinfo;
+		local_par.family   = par->family;
 		destiny->target(skb, &local_par);
 	}
 #endif
 }
 
 static unsigned int
-chaos_tg(struct sk_buff **pskb, const struct xt_target_param *par)
+chaos_tg(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	/*
 	 * Equivalent to:
@@ -120,7 +150,7 @@ chaos_tg(struct sk_buff **pskb, const struct xt_target_param *par)
 #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 27)
 		return xt_reject->target(skb, par->in, par->out, par->hooknum,
 		       xt_reject, &reject_params);
-#else
+#elif LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 34)
 		struct xt_target_param local_par = {
 			.in       = par->in,
 			.out      = par->out,
@@ -129,6 +159,14 @@ chaos_tg(struct sk_buff **pskb, const struct xt_target_param *par)
 			.targinfo = &reject_params,
 		};
 		return xt_reject->target(skb, &local_par);
+#else
+		struct xt_action_param local_par;
+		local_par.in       = par->in;
+		local_par.out      = par->out;
+		local_par.hooknum  = par->hooknum;
+		local_par.target   = xt_reject;
+		local_par.targinfo = &reject_params;
+		return xt_reject->target(skb, &local_par);
 #endif
 	}
 
@@ -141,22 +179,22 @@ chaos_tg(struct sk_buff **pskb, const struct xt_target_param *par)
 	return NF_DROP;
 }
 
-static bool chaos_tg_check(const struct xt_tgchk_param *par)
+static int chaos_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_chaos_tginfo *info = par->targinfo;
 
 	if (info->variant == XTCHAOS_DELUDE && !have_delude) {
 		printk(KERN_WARNING PFX "Error: Cannot use --delude when "
 		       "DELUDE module not available\n");
-		return false;
+		return -EINVAL;
 	}
 	if (info->variant == XTCHAOS_TARPIT && !have_tarpit) {
 		printk(KERN_WARNING PFX "Error: Cannot use --tarpit when "
 		       "TARPIT module not available\n");
-		return false;
+		return -EINVAL;
 	}
 
-	return true;
+	return 0;
 }
 
 static struct xt_target chaos_tg_reg = {

extensions/xt_CHECKSUM.c

@@ -0,0 +1,72 @@
+/*
+ * (C) 2002 by Harald Welte <laforge@netfilter.org>
+ * (C) 2010 Red Hat, Inc.
+ *
+ * Author: Michael S. Tsirkin <mst@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/module.h>
+#include <linux/skbuff.h>
+
+#include <linux/netfilter/x_tables.h>
+#include "xt_CHECKSUM.h"
+#include "compat_xtables.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Michael S. Tsirkin <mst@redhat.com>");
+MODULE_DESCRIPTION("Xtables: checksum modification");
+MODULE_ALIAS("ipt_CHECKSUM");
+MODULE_ALIAS("ip6t_CHECKSUM");
+
+static unsigned int
+checksum_tg(struct sk_buff **pskb, const struct xt_action_param *par)
+{
+	struct sk_buff *skb = *pskb;
+
+	if (skb->ip_summed == CHECKSUM_PARTIAL)
+		skb_checksum_help(skb);
+
+	return XT_CONTINUE;
+}
+
+static int checksum_tg_check(const struct xt_tgchk_param *par)
+{
+	const struct xt_CHECKSUM_info *einfo = par->targinfo;
+
+	if (einfo->operation & ~XT_CHECKSUM_OP_FILL) {
+		pr_info("unsupported CHECKSUM operation %x\n", einfo->operation);
+		return -EINVAL;
+	}
+	if (!einfo->operation) {
+		pr_info("no CHECKSUM operation enabled\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static struct xt_target checksum_tg_reg __read_mostly = {
+	.name       = "CHECKSUM",
+	.family     = NFPROTO_UNSPEC,
+	.target     = checksum_tg,
+	.targetsize = sizeof(struct xt_CHECKSUM_info),
+	.table      = "mangle",
+	.checkentry = checksum_tg_check,
+	.me         = THIS_MODULE,
+};
+
+static int __init checksum_tg_init(void)
+{
+	return xt_register_target(&checksum_tg_reg);
+}
+
+static void __exit checksum_tg_exit(void)
+{
+	xt_unregister_target(&checksum_tg_reg);
+}
+
+module_init(checksum_tg_init);
+module_exit(checksum_tg_exit);

extensions/xt_CHECKSUM.h

@@ -0,0 +1,18 @@
+/* Header file for iptables ipt_CHECKSUM target
+ *
+ * (C) 2002 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010 Red Hat Inc
+ * Author: Michael S. Tsirkin <mst@redhat.com>
+ *
+ * This software is distributed under GNU GPL v2, 1991
+*/
+#ifndef _IPT_CHECKSUM_TARGET_H
+#define _IPT_CHECKSUM_TARGET_H
+
+#define XT_CHECKSUM_OP_FILL	0x01	/* fill in checksum in IP header */
+
+struct xt_CHECKSUM_info {
+	__u8 operation;	/* bitset of operations */
+};
+
+#endif /* _IPT_CHECKSUM_TARGET_H */

extensions/xt_DELUDE.c

@@ -143,7 +143,7 @@ static void delude_send_reset(struct sk_buff *oldskb, unsigned int hook)
 }
 
 static unsigned int
-delude_tg(struct sk_buff **pskb, const struct xt_target_param *par)
+delude_tg(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	/* WARNING: This code causes reentry within iptables.
 	   This means that the iptables jump stack is now crap.  We

extensions/xt_DHCPMAC.c

@@ -69,7 +69,7 @@ static bool ether_cmp(const unsigned char *lh, const unsigned char *rh,
 }
 
 static bool
-dhcpmac_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+dhcpmac_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	const struct dhcpmac_info *info = par->matchinfo;
 	const struct dhcp_message *dh;
@@ -89,7 +89,7 @@ dhcpmac_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 }
 
 static unsigned int
-dhcpmac_tg(struct sk_buff **pskb, const struct xt_target_param *par)
+dhcpmac_tg(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct dhcpmac_info *info = par->targinfo;
 	struct dhcp_message dhcpbuf, *dh;
@@ -139,7 +139,7 @@ static struct xt_match dhcpmac_mt_reg __read_mostly = {
 	.family     = NFPROTO_IPV4,
 	.proto      = IPPROTO_UDP,
 	.match      = dhcpmac_mt,
-	.matchsize  = XT_ALIGN(sizeof(struct dhcpmac_info)),
+	.matchsize  = sizeof(struct dhcpmac_info),
 	.me         = THIS_MODULE,
 };
 

extensions/xt_ECHO.c

@@ -21,7 +21,7 @@
 #include "compat_xtables.h"
 
 static unsigned int
-echo_tg4(struct sk_buff **poldskb, const struct xt_target_param *par)
+echo_tg4(struct sk_buff **poldskb, const struct xt_action_param *par)
 {
 	const struct sk_buff *oldskb = *poldskb;
 	const struct udphdr *oldudp;
@@ -32,7 +32,7 @@ echo_tg4(struct sk_buff **poldskb, const struct xt_target_param *par)
 	unsigned int addr_type, data_len;
 	void *payload;
 
-	printk(KERN_INFO "dst_out=%p\n", (*poldskb)->dst->output);
+	printk(KERN_INFO "dst_out=%p\n", skb_dst(*poldskb)->output);
 
 	/* This allows us to do the copy operation in fewer lines of code. */
 	if (skb_linearize(*poldskb) < 0)
@@ -84,18 +84,17 @@ echo_tg4(struct sk_buff **poldskb, const struct xt_target_param *par)
 #endif
 		addr_type = RTN_LOCAL;
 
-	/* ip_route_me_harder expects skb->dst to be set */
-	dst_hold(oldskb->dst);
-	newskb->dst = oldskb->dst;
+	/* ip_route_me_harder expects the skb's dst to be set */
+	skb_dst_set(newskb, dst_clone(skb_dst(oldskb)));
 
 	if (ip_route_me_harder(&newskb, addr_type) < 0)
 		goto free_nskb;
 
-	newip->ttl        = dst_metric(newskb->dst, RTAX_HOPLIMIT);
+	newip->ttl        = dst_metric(skb_dst(newskb), RTAX_HOPLIMIT);
 	newskb->ip_summed = CHECKSUM_NONE;
 
 	/* "Never happens" (?) */
-	if (newskb->len > dst_mtu(newskb->dst))
+	if (newskb->len > dst_mtu(skb_dst(newskb)))
 		goto free_nskb;
 
 	nf_ct_attach(newskb, *poldskb);
@@ -114,7 +113,6 @@ static struct xt_target echo_tg_reg __read_mostly = {
 	.proto      = IPPROTO_UDP,
 	.table      = "filter",
 	.target     = echo_tg4,
-	.targetsize = XT_ALIGN(0),
 	.me         = THIS_MODULE,
 };
 

extensions/xt_IPMARK.c

@@ -25,7 +25,7 @@ MODULE_ALIAS("ipt_IPMARK");
 MODULE_ALIAS("ip6t_IPMARK");
 
 static unsigned int
-ipmark_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
+ipmark_tg4(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_ipmark_tginfo *ipmarkinfo = par->targinfo;
 	const struct sk_buff *skb = *pskb;
@@ -61,7 +61,7 @@ static __u32 ipmark_from_ip6(const struct in6_addr *a, unsigned int s)
 }
 
 static unsigned int
-ipmark_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
+ipmark_tg6(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_ipmark_tginfo *info = par->targinfo;
 	const struct sk_buff *skb = *pskb;
@@ -86,7 +86,7 @@ static struct xt_target ipmark_tg_reg[] __read_mostly = {
 		.family     = NFPROTO_IPV4,
 		.table      = "mangle",
 		.target     = ipmark_tg4,
-		.targetsize = XT_ALIGN(sizeof(struct xt_ipmark_tginfo)),
+		.targetsize = sizeof(struct xt_ipmark_tginfo),
 		.me         = THIS_MODULE,
 	},
 	{
@@ -95,7 +95,7 @@ static struct xt_target ipmark_tg_reg[] __read_mostly = {
 		.family     = NFPROTO_IPV6,
 		.table      = "mangle",
 		.target     = ipmark_tg6,
-		.targetsize = XT_ALIGN(sizeof(struct xt_ipmark_tginfo)),
+		.targetsize = sizeof(struct xt_ipmark_tginfo),
 		.me         = THIS_MODULE,
 	},
 };

extensions/xt_LOGMARK.c

@@ -2,7 +2,7 @@
  *	"LOGMARK" target extension to Xtables
  *	useful for debugging
  *
- *	Copyright © Jan Engelhardt <jengelh [at] medozas de>, 2008
+ *	Copyright © Jan Engelhardt <jengelh [at] medozas de>, 2008-2010
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License; either
@@ -30,7 +30,7 @@ static const char *const dir_names[] = {
 };
 
 static unsigned int
-logmark_tg(struct sk_buff **pskb, const struct xt_target_param *par)
+logmark_tg(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct sk_buff *skb = *pskb;
 	const struct xt_logmark_tginfo *info = par->targinfo;
@@ -75,23 +75,25 @@ logmark_tg(struct sk_buff **pskb, const struct xt_target_param *par)
 			printk("%s""ASSURED", prev++ ? "," : "");
 		if (ct->status & IPS_CONFIRMED)
 			printk("%s""CONFIRMED", prev++ ? "," : "");
+		printk(" lifetime=%lus",
+		       (jiffies - ct->timeout.expires) / HZ);
 	}
 
 	printk("\n");
 	return XT_CONTINUE;
 }
 
-static bool
+static int
 logmark_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_logmark_tginfo *info = par->targinfo;
 
 	if (info->level >= 8) {
 		pr_debug("LOGMARK: level %u >= 8\n", info->level);
-		return false;
+		return -EINVAL;
 	}
 
-	return true;
+	return 0;
 }
 
 static struct xt_target logmark_tg_reg[] __read_mostly = {

extensions/xt_RAWNAT.c

@@ -22,6 +22,10 @@
 #include "compat_xtables.h"
 #include "xt_RAWNAT.h"
 
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#	define WITH_IPV6 1
+#endif
+
 static inline __be32
 remask(__be32 addr, __be32 repl, unsigned int shift)
 {
@@ -29,6 +33,7 @@ remask(__be32 addr, __be32 repl, unsigned int shift)
 	return htonl((ntohl(addr) & mask) | (ntohl(repl) & ~mask));
 }
 
+#ifdef WITH_IPV6
 static void
 rawnat_ipv6_mask(__be32 *addr, const __be32 *repl, unsigned int mask)
 {
@@ -43,7 +48,7 @@ rawnat_ipv6_mask(__be32 *addr, const __be32 *repl, unsigned int mask)
 		break;
 	case 33 ... 63:
 		addr[0] = repl[0];
-		addr[1] = remask(addr[1], repl[1], mask - 64);
+		addr[1] = remask(addr[1], repl[1], mask - 32);
 		break;
 	case 64:
 		addr[0] = repl[0];
@@ -52,7 +57,7 @@ rawnat_ipv6_mask(__be32 *addr, const __be32 *repl, unsigned int mask)
 	case 65 ... 95:
 		addr[0] = repl[0];
 		addr[1] = repl[1];
-		addr[2] = remask(addr[2], repl[2], mask - 96);
+		addr[2] = remask(addr[2], repl[2], mask - 64);
 	case 96:
 		addr[0] = repl[0];
 		addr[1] = repl[1];
@@ -62,7 +67,7 @@ rawnat_ipv6_mask(__be32 *addr, const __be32 *repl, unsigned int mask)
 		addr[0] = repl[0];
 		addr[1] = repl[1];
 		addr[2] = repl[2];
-		addr[3] = remask(addr[3], repl[3], mask - 128);
+		addr[3] = remask(addr[3], repl[3], mask - 96);
 		break;
 	case 128:
 		addr[0] = repl[0];
@@ -72,6 +77,7 @@ rawnat_ipv6_mask(__be32 *addr, const __be32 *repl, unsigned int mask)
 		break;
 	}
 }
+#endif
 
 static void rawnat4_update_l4(struct sk_buff *skb, __be32 oldip, __be32 newip)
 {
@@ -119,7 +125,7 @@ static unsigned int rawnat4_writable_part(const struct iphdr *iph)
 }
 
 static unsigned int
-rawsnat_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
+rawsnat_tg4(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_rawnat_tginfo *info = par->targinfo;
 	struct iphdr *iph;
@@ -141,7 +147,7 @@ rawsnat_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
 }
 
 static unsigned int
-rawdnat_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
+rawdnat_tg4(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_rawnat_tginfo *info = par->targinfo;
 	struct iphdr *iph;
@@ -162,6 +168,7 @@ rawdnat_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
 	return XT_CONTINUE;
 }
 
+#ifdef WITH_IPV6
 static bool rawnat6_prepare_l4(struct sk_buff **pskb, unsigned int *l4offset,
     unsigned int *l4proto)
 {
@@ -234,7 +241,7 @@ static void rawnat6_update_l4(struct sk_buff *skb, unsigned int l4proto,
 }
 
 static unsigned int
-rawsnat_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
+rawsnat_tg6(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_rawnat_tginfo *info = par->targinfo;
 	unsigned int l4offset, l4proto;
@@ -255,7 +262,7 @@ rawsnat_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
 }
 
 static unsigned int
-rawdnat_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
+rawdnat_tg6(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_rawnat_tginfo *info = par->targinfo;
 	unsigned int l4offset, l4proto;
@@ -274,16 +281,17 @@ rawdnat_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
 	memcpy(&iph->daddr, &new_addr, sizeof(new_addr));
 	return XT_CONTINUE;
 }
+#endif
 
-static bool rawnat_tg_check(const struct xt_tgchk_param *par)
+static int rawnat_tg_check(const struct xt_tgchk_param *par)
 {
 	if (strcmp(par->table, "raw") == 0 ||
 	    strcmp(par->table, "rawpost") == 0)
-		return true;
+		return 0;
 
 	printk(KERN_ERR KBUILD_MODNAME " may only be used in the \"raw\" or "
 	       "\"rawpost\" table.\n");
-	return false;
+	return -EINVAL;
 }
 
 static struct xt_target rawnat_tg_reg[] __read_mostly = {
@@ -296,6 +304,7 @@ static struct xt_target rawnat_tg_reg[] __read_mostly = {
 		.checkentry = rawnat_tg_check,
 		.me         = THIS_MODULE,
 	},
+#ifdef WITH_IPV6
 	{
 		.name       = "RAWSNAT",
 		.revision   = 0,
@@ -305,6 +314,7 @@ static struct xt_target rawnat_tg_reg[] __read_mostly = {
 		.checkentry = rawnat_tg_check,
 		.me         = THIS_MODULE,
 	},
+#endif
 	{
 		.name       = "RAWDNAT",
 		.revision   = 0,
@@ -314,6 +324,7 @@ static struct xt_target rawnat_tg_reg[] __read_mostly = {
 		.checkentry = rawnat_tg_check,
 		.me         = THIS_MODULE,
 	},
+#ifdef WITH_IPV6
 	{
 		.name       = "RAWDNAT",
 		.revision   = 0,
@@ -323,6 +334,7 @@ static struct xt_target rawnat_tg_reg[] __read_mostly = {
 		.checkentry = rawnat_tg_check,
 		.me         = THIS_MODULE,
 	},
+#endif
 };
 
 static int __init rawnat_tg_init(void)

extensions/xt_STEAL.c

@@ -8,7 +8,7 @@
 #include "compat_xtables.h"
 
 static unsigned int
-steal_tg(struct sk_buff **pskb, const struct xt_target_param *par)
+steal_tg(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	kfree_skb(*pskb);
 	return NF_STOLEN;

extensions/xt_SYSRQ.c

@@ -1,6 +1,6 @@
 /*
  *	"SYSRQ" target extension for Netfilter
- *	Copyright © Jan Engelhardt <jengelh [at] medozas de>, 2008
+ *	Copyright © Jan Engelhardt <jengelh [at] medozas de>, 2008 - 2010
  *
  *	Based upon the ipt_SYSRQ idea by Marek Zalem <marek [at] terminus sk>
  *
@@ -23,6 +23,14 @@
 #include <net/ip.h>
 #include "compat_xtables.h"
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19) && \
+    (defined(CONFIG_CRYPTO) || defined(CONFIG_CRYPTO_MODULE))
+#	define WITH_CRYPTO 1
+#endif
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#	define WITH_IPV6 1
+#endif
+
 static bool sysrq_once;
 static char sysrq_password[64];
 static char sysrq_hash[16] = "sha1";
@@ -38,7 +46,7 @@ MODULE_PARM_DESC(hash, "hash algorithm, default sha1");
 MODULE_PARM_DESC(seqno, "sequence number for remote sysrq");
 MODULE_PARM_DESC(debug, "debugging: 0=off, 1=on");
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
+#ifdef WITH_CRYPTO
 static struct crypto_hash *sysrq_tfm;
 static int sysrq_digest_size;
 static unsigned char *sysrq_digest_password;
@@ -127,13 +135,13 @@ static unsigned int sysrq_tg(const void *pdata, uint16_t len)
 			"0123456789abcdef"[sysrq_digest[i] & 0xf];
 	}
 	sysrq_hexdigest[2*sysrq_digest_size] = '\0';
-	if (len - n < sysrq_digest_size) {
+	if (len - n < sysrq_digest_size * 2) {
 		if (sysrq_debug)
 			printk(KERN_INFO KBUILD_MODNAME ": Short digest,"
 			       " expected %s\n", sysrq_hexdigest);
 		return NF_DROP;
 	}
-	if (strncmp(data + n, sysrq_hexdigest, sysrq_digest_size) != 0) {
+	if (strncmp(data + n, sysrq_hexdigest, sysrq_digest_size * 2) != 0) {
 		if (sysrq_debug)
 			printk(KERN_INFO KBUILD_MODNAME ": Bad digest,"
 			       " expected %s\n", sysrq_hexdigest);
@@ -144,7 +152,9 @@ static unsigned int sysrq_tg(const void *pdata, uint16_t len)
 	sysrq_seqno = new_seqno;
 	for (i = 0; i < len && data[i] != ','; ++i) {
 		printk(KERN_INFO KBUILD_MODNAME ": SysRq %c\n", data[i]);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)
+		handle_sysrq(data[i]);
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
 		handle_sysrq(data[i], NULL);
 #else
 		handle_sysrq(data[i], NULL, NULL);
@@ -179,7 +189,9 @@ static unsigned int sysrq_tg(const void *pdata, uint16_t len)
 		return NF_DROP;
 	}
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)
+	handle_sysrq(c);
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
 	handle_sysrq(c, NULL);
 #else
 	handle_sysrq(c, NULL, NULL);
@@ -189,7 +201,7 @@ static unsigned int sysrq_tg(const void *pdata, uint16_t len)
 #endif
 
 static unsigned int
-sysrq_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
+sysrq_tg4(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	struct sk_buff *skb = *pskb;
 	const struct iphdr *iph;
@@ -200,8 +212,8 @@ sysrq_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
 		return NF_DROP;
 
 	iph = ip_hdr(skb);
-	if (iph->protocol != IPPROTO_UDP)
-		return NF_ACCEPT; /* sink it */
+	if (iph->protocol != IPPROTO_UDP && iph->protocol != IPPROTO_UDPLITE)
+		return NF_DROP;
 
 	udph = (const void *)iph + ip_hdrlen(skb);
 	len  = ntohs(udph->len) - sizeof(struct udphdr);
@@ -214,8 +226,9 @@ sysrq_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
 	return sysrq_tg((void *)udph + sizeof(struct udphdr), len);
 }
 
+#ifdef WITH_IPV6
 static unsigned int
-sysrq_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
+sysrq_tg6(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	struct sk_buff *skb = *pskb;
 	const struct ipv6hdr *iph;
@@ -230,7 +243,7 @@ sysrq_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
 	iph = ipv6_hdr(skb);
 	if (ipv6_find_hdr(skb, &th_off, IPPROTO_UDP, &frag_off) < 0 ||
 	    frag_off > 0)
-		return NF_ACCEPT; /* sink it */
+		return NF_DROP;
 
 	udph = (const void *)iph + th_off;
 	len  = ntohs(udph->len) - sizeof(struct udphdr);
@@ -242,10 +255,10 @@ sysrq_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
 		       ntohs(udph->dest), len);
 	return sysrq_tg(udph + sizeof(struct udphdr), len);
 }
+#endif
 
-static bool sysrq_tg_check(const struct xt_tgchk_param *par)
+static int sysrq_tg_check(const struct xt_tgchk_param *par)
 {
-
 	if (par->target->family == NFPROTO_IPV4) {
 		const struct ipt_entry *entry = par->entryinfo;
 
@@ -262,11 +275,11 @@ static bool sysrq_tg_check(const struct xt_tgchk_param *par)
 			goto out;
 	}
 
-	return true;
+	return 0;
 
  out:
 	printk(KERN_ERR KBUILD_MODNAME ": only available for UDP and UDP-Lite");
-	return false;
+	return -EINVAL;
 }
 
 static struct xt_target sysrq_tg_reg[] __read_mostly = {
@@ -278,6 +291,7 @@ static struct xt_target sysrq_tg_reg[] __read_mostly = {
 		.checkentry = sysrq_tg_check,
 		.me         = THIS_MODULE,
 	},
+#ifdef WITH_IPV6
 	{
 		.name       = "SYSRQ",
 		.revision   = 1,
@@ -286,45 +300,12 @@ static struct xt_target sysrq_tg_reg[] __read_mostly = {
 		.checkentry = sysrq_tg_check,
 		.me         = THIS_MODULE,
 	},
+#endif
 };
 
-static int __init sysrq_tg_init(void)
+static void sysrq_crypto_exit(void)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
-	struct timeval now;
-
-	sysrq_tfm = crypto_alloc_hash(sysrq_hash, 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(sysrq_tfm)) {
-		printk(KERN_WARNING KBUILD_MODNAME
-			": Error: Could not find or load %s hash\n",
-			sysrq_hash);
-		sysrq_tfm = NULL;
-		goto fail;
-	}
-	sysrq_digest_size = crypto_hash_digestsize(sysrq_tfm);
-	sysrq_digest = kmalloc(sysrq_digest_size, GFP_KERNEL);
-	if (sysrq_digest == NULL) {
-		printk(KERN_WARNING KBUILD_MODNAME
-			": Cannot allocate digest\n");
-		goto fail;
-	}
-	sysrq_hexdigest = kmalloc(2 * sysrq_digest_size + 1, GFP_KERNEL);
-	if (sysrq_hexdigest == NULL) {
-		printk(KERN_WARNING KBUILD_MODNAME
-			": Cannot allocate hexdigest\n");
-		goto fail;
-	}
-	sysrq_digest_password = kmalloc(sizeof(sysrq_password), GFP_KERNEL);
-	if (sysrq_digest_password == NULL) {
-		printk(KERN_WARNING KBUILD_MODNAME
-			": Cannot allocate password digest space\n");
-		goto fail;
-	}
-	do_gettimeofday(&now);
-	sysrq_seqno = now.tv_sec;
-	return xt_register_targets(sysrq_tg_reg, ARRAY_SIZE(sysrq_tg_reg));
-
- fail:
+#ifdef WITH_CRYPTO
 	if (sysrq_tfm)
 		crypto_free_hash(sysrq_tfm);
 	if (sysrq_digest)
@@ -333,22 +314,62 @@ static int __init sysrq_tg_init(void)
 		kfree(sysrq_hexdigest);
 	if (sysrq_digest_password)
 		kfree(sysrq_digest_password);
-	return -EINVAL;
-#else
-	printk(KERN_WARNING "xt_SYSRQ does not provide crypto for <= 2.6.18\n");
-	return xt_register_targets(sysrq_tg_reg, ARRAY_SIZE(sysrq_tg_reg));
 #endif
 }
 
+static int __init sysrq_crypto_init(void)
+{
+#if defined(WITH_CRYPTO)
+	struct timeval now;
+	int ret;
+
+	sysrq_tfm = crypto_alloc_hash(sysrq_hash, 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(sysrq_tfm)) {
+		printk(KERN_WARNING KBUILD_MODNAME
+			": Error: Could not find or load %s hash\n",
+			sysrq_hash);
+		ret = PTR_ERR(sysrq_tfm);
+		sysrq_tfm = NULL;
+		goto fail;
+	}
+	sysrq_digest_size = crypto_hash_digestsize(sysrq_tfm);
+	sysrq_digest = kmalloc(sysrq_digest_size, GFP_KERNEL);
+	ret = -ENOMEM;
+	if (sysrq_digest == NULL)
+		goto fail;
+	sysrq_hexdigest = kmalloc(2 * sysrq_digest_size + 1, GFP_KERNEL);
+	if (sysrq_hexdigest == NULL)
+		goto fail;
+	sysrq_digest_password = kmalloc(sizeof(sysrq_password), GFP_KERNEL);
+	if (sysrq_digest_password == NULL)
+		goto fail;
+	do_gettimeofday(&now);
+	sysrq_seqno = now.tv_sec;
+	ret = xt_register_targets(sysrq_tg_reg, ARRAY_SIZE(sysrq_tg_reg));
+	if (ret < 0)
+		goto fail;
+	return ret;
+
+ fail:
+	sysrq_crypto_exit();
+	return ret;
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+	printk(KERN_WARNING "xt_SYSRQ does not provide crypto for < 2.6.19\n");
+#endif
+	return -EINVAL;
+}
+
+static int __init sysrq_tg_init(void)
+{
+	if (sysrq_crypto_init() < 0)
+		printk(KERN_WARNING "xt_SYSRQ starting without crypto\n");
+	return xt_register_targets(sysrq_tg_reg, ARRAY_SIZE(sysrq_tg_reg));
+}
+
 static void __exit sysrq_tg_exit(void)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19)
-	crypto_free_hash(sysrq_tfm);
-	kfree(sysrq_digest);
-	kfree(sysrq_hexdigest);
-	kfree(sysrq_digest_password);
-#endif
-	return xt_unregister_targets(sysrq_tg_reg, ARRAY_SIZE(sysrq_tg_reg));
+	sysrq_crypto_exit();
+	xt_unregister_targets(sysrq_tg_reg, ARRAY_SIZE(sysrq_tg_reg));
 }
 
 module_init(sysrq_tg_init);

extensions/xt_TARPIT.c

@@ -73,7 +73,7 @@ static void tarpit_tcp(struct sk_buff *oldskb, unsigned int hook)
 	/* Rate-limit replies to !SYN,ACKs */
 #if 0
 	if (!oth->syn && oth->ack)
-		if (!xrlim_allow(&ort->u.dst, HZ))
+		if (!xrlim_allow(rt_dst(ort), HZ))
 			return;
 #endif
 
@@ -188,7 +188,7 @@ static void tarpit_tcp(struct sk_buff *oldskb, unsigned int hook)
 }
 
 static unsigned int
-tarpit_tg(struct sk_buff **pskb, const struct xt_target_param *par)
+tarpit_tg(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct sk_buff *skb = *pskb;
 	const struct iphdr *iph = ip_hdr(skb);

extensions/xt_TEE.c

@@ -24,7 +24,6 @@
 #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
 #	define WITH_CONNTRACK 1
 #	include <net/netfilter/nf_conntrack.h>
-static struct nf_conn tee_track;
 #endif
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 #	define WITH_IPV6 1
@@ -33,55 +32,27 @@ static struct nf_conn tee_track;
 #include "compat_xtables.h"
 #include "xt_TEE.h"
 
+static bool tee_active[NR_CPUS];
 static const union nf_inet_addr tee_zero_address;
 
-/*
- * Try to route the packet according to the routing keys specified in
- * route_info. Keys are :
- *  - ifindex :
- *      0 if no oif preferred,
- *      otherwise set to the index of the desired oif
- *  - route_info->gateway :
- *      0 if no gateway specified,
- *      otherwise set to the next host to which the pkt must be routed
- * If success, skb->dev is the output device to which the packet must
- * be sent and skb->dst is not NULL
- *
- * RETURN: false - if an error occured
- *         true  - if the packet was succesfully routed to the
- *                 destination desired
- */
 static bool
 tee_tg_route4(struct sk_buff *skb, const struct xt_tee_tginfo *info)
 {
 	const struct iphdr *iph = ip_hdr(skb);
-	int err;
 	struct rtable *rt;
 	struct flowi fl;
 
 	memset(&fl, 0, sizeof(fl));
-	fl.iif = skb_ifindex(skb);
-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 19)
-	fl.nl_u.ip4_u.fwmark = skb_nfmark(skb);
-#else
-	fl.mark = skb_nfmark(skb);
-#endif
 	fl.nl_u.ip4_u.daddr = info->gw.ip;
 	fl.nl_u.ip4_u.tos   = RT_TOS(iph->tos);
 	fl.nl_u.ip4_u.scope = RT_SCOPE_UNIVERSE;
 
-	/* Trying to route the packet using the standard routing table. */
-	err = ip_route_output_key(&init_net, &rt, &fl);
-	if (err != 0) {
-		if (net_ratelimit())
-			pr_debug(KBUILD_MODNAME
-			         ": could not route packet (%d)", err);
+	if (ip_route_output_key(&init_net, &rt, &fl) != 0)
 		return false;
-	}
 
 	dst_release(skb_dst(skb));
-	skb_dst_set(skb, &rt->u.dst);
-	skb->dev      = rt->u.dst.dev;
+	skb_dst_set(skb, rt_dst(rt));
+	skb->dev      = rt_dst(rt)->dev;
 	skb->protocol = htons(ETH_P_IP);
 	return true;
 }
@@ -123,79 +94,58 @@ static void tee_tg_send(struct sk_buff *skb)
 		skb = skb2;
 	}
 
-	if (dst->hh != NULL) {
+	if (dst->hh != NULL)
 		neigh_hh_output(dst->hh, skb);
-	} else if (dst->neighbour != NULL) {
+	else if (dst->neighbour != NULL)
 		dst->neighbour->output(skb);
-	} else {
-		if (net_ratelimit())
-			pr_debug(KBUILD_MODNAME "no hdr & no neighbour cache!\n");
+	else
 		kfree_skb(skb);
-	}
 }
 
-/*
- * To detect and deter routed packet loopback when using the --tee option, we
- * take a page out of the raw.patch book: on the copied skb, we set up a fake
- * ->nfct entry, pointing to the local &route_tee_track. We skip routing
- * packets when we see they already have that ->nfct.
- */
 static unsigned int
-tee_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
+tee_tg4(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_tee_tginfo *info = par->targinfo;
 	struct sk_buff *skb = *pskb;
+	struct iphdr *iph;
+	unsigned int cpu = smp_processor_id();
 
-#ifdef WITH_CONNTRACK
-	if (skb->nfct == &tee_track.ct_general) {
-		/*
-		 * Loopback - a packet we already routed, is to be
-		 * routed another time. Avoid that, now.
-		 */
-		if (net_ratelimit())
-			pr_debug(KBUILD_MODNAME "loopback - DROP!\n");
-		return NF_DROP;
-	}
-#endif
-
-	if (!skb_make_writable(pskb, sizeof(struct iphdr)))
-		return NF_DROP;
-	skb = *pskb;
-
-	/*
-	 * If we are in INPUT, the checksum must be recalculated since
-	 * the length could have changed as a result of defragmentation.
-	 */
-	if (par->hooknum == NF_INET_LOCAL_IN) {
-		struct iphdr *iph = ip_hdr(skb);
-		iph->check = 0;
-		iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
-	}
-
+	if (tee_active[cpu])
+		return XT_CONTINUE;
 	/*
 	 * Copy the skb, and route the copy. Will later return %XT_CONTINUE for
 	 * the original skb, which should continue on its way as if nothing has
 	 * happened. The copy should be independently delivered to the TEE
 	 * --gateway.
 	 */
-	skb = skb_copy(skb, GFP_ATOMIC);
-	if (skb == NULL) {
-		if (net_ratelimit())
-			pr_debug(KBUILD_MODNAME "copy failed!\n");
+	skb = pskb_copy(skb, GFP_ATOMIC);
+	if (skb == NULL)
 		return XT_CONTINUE;
-	}
+	/*
+	 * If we are in PREROUTING/INPUT, the checksum must be recalculated
+	 * since the length could have changed as a result of defragmentation.
+	 *
+	 * We also decrease the TTL to mitigate potential TEE loops
+	 * between two hosts.
+	 *
+	 * Set %IP_DF so that the original source is notified of a potentially
+	 * decreased MTU on the clone route. IPv6 does this too.
+	 */
+	iph = ip_hdr(skb);
+	iph->frag_off |= htons(IP_DF);
+	if (par->hooknum == NF_INET_PRE_ROUTING ||
+	    par->hooknum == NF_INET_LOCAL_IN)
+		--iph->ttl;
+	ip_send_check(iph);
 
 #ifdef WITH_CONNTRACK
 	/*
-	 * Tell conntrack to forget this packet since it may get confused
-	 * when a packet is leaving with dst address == our address.
-	 * Good idea? Dunno. Need advice.
-	 *
-	 * NEW: mark the skb with our &tee_track, so we avoid looping
-	 * on any already routed packet.
+	 * Tell conntrack to forget this packet. It may have side effects to
+	 * see the same packet twice, as for example, accounting the original
+	 * connection for the cloned packet.
 	 */
 	nf_conntrack_put(skb->nfct);
-	skb->nfct     = &tee_track.ct_general;
+	skb->nfct     = &nf_conntrack_untracked.ct_general;
 	skb->nfctinfo = IP_CT_NEW;
 	nf_conntrack_get(skb->nfct);
 #endif
@@ -216,9 +166,13 @@ tee_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
 	 * Also on purpose, no fragmentation is done, to preserve the
 	 * packet as best as possible.
 	 */
-	if (tee_tg_route4(skb, info))
+	if (tee_tg_route4(skb, info)) {
+		tee_active[cpu] = true;
 		tee_tg_send(skb);
-
+		tee_active[cpu] = false;
+	} else {
+		kfree_skb(skb);
+	}
 	return XT_CONTINUE;
 }
 
@@ -231,12 +185,6 @@ tee_tg_route6(struct sk_buff *skb, const struct xt_tee_tginfo *info)
 	struct flowi fl;
 
 	memset(&fl, 0, sizeof(fl));
-	fl.iif = skb_ifindex(skb);
-#if LINUX_VERSION_CODE == KERNEL_VERSION(2, 6, 19)
-	fl.nl_u.ip6_u.fwmark = skb_nfmark(skb);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
-	fl.mark = skb_nfmark(skb);
-#endif
 	fl.nl_u.ip6_u.daddr = info->gw.in6;
 	fl.nl_u.ip6_u.flowlabel = ((iph->flow_lbl[0] & 0xF) << 16) |
 		(iph->flow_lbl[1] << 8) | iph->flow_lbl[2];
@@ -246,11 +194,8 @@ tee_tg_route6(struct sk_buff *skb, const struct xt_tee_tginfo *info)
 #else
 	dst = ip6_route_output(dev_net(skb->dev), NULL, &fl);
 #endif
-	if (dst == NULL) {
-		if (net_ratelimit())
-			printk(KERN_ERR "ip6_route_output failed for tee\n");
+	if (dst == NULL)
 		return false;
-	}
 
 	dst_release(skb_dst(skb));
 	skb_dst_set(skb, dst);
@@ -260,40 +205,47 @@ tee_tg_route6(struct sk_buff *skb, const struct xt_tee_tginfo *info)
 }
 
 static unsigned int
-tee_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
+tee_tg6(struct sk_buff **pskb, const struct xt_action_param *par)
 {
 	const struct xt_tee_tginfo *info = par->targinfo;
 	struct sk_buff *skb = *pskb;
+	unsigned int cpu = smp_processor_id();
 
-	/* Try silence. */
-#ifdef WITH_CONNTRACK
-	if (skb->nfct == &tee_track.ct_general)
-		return NF_DROP;
-#endif
-
-	if ((skb = skb_copy(skb, GFP_ATOMIC)) == NULL)
+	if (tee_active[cpu])
+		return XT_CONTINUE;
+	skb = pskb_copy(skb, GFP_ATOMIC);
+	if (skb == NULL)
 		return XT_CONTINUE;
 
 #ifdef WITH_CONNTRACK
 	nf_conntrack_put(skb->nfct);
-	skb->nfct     = &tee_track.ct_general;
+	skb->nfct     = &nf_conntrack_untracked.ct_general;
 	skb->nfctinfo = IP_CT_NEW;
 	nf_conntrack_get(skb->nfct);
 #endif
-	if (tee_tg_route6(skb, info))
+	if (par->hooknum == NF_INET_PRE_ROUTING ||
+	    par->hooknum == NF_INET_LOCAL_IN) {
+		struct ipv6hdr *iph = ipv6_hdr(skb);
+		--iph->hop_limit;
+	}
+	if (tee_tg_route6(skb, info)) {
+		tee_active[cpu] = true;
 		tee_tg_send(skb);
-
+		tee_active[cpu] = false;
+	} else {
+		kfree_skb(skb);
+	}
 	return XT_CONTINUE;
 }
 #endif /* WITH_IPV6 */
 
-static bool tee_tg_check(const struct xt_tgchk_param *par)
+static int tee_tg_check(const struct xt_tgchk_param *par)
 {
 	const struct xt_tee_tginfo *info = par->targinfo;
 
 	/* 0.0.0.0 and :: not allowed */
-	return memcmp(&info->gw, &tee_zero_address,
-	       sizeof(tee_zero_address)) != 0;
+	return (memcmp(&info->gw, &tee_zero_address,
+	       sizeof(tee_zero_address)) == 0) ? -EINVAL : 0;
 }
 
 static struct xt_target tee_tg_reg[] __read_mostly = {
@@ -301,7 +253,6 @@ static struct xt_target tee_tg_reg[] __read_mostly = {
 		.name       = "TEE",
 		.revision   = 0,
 		.family     = NFPROTO_IPV4,
-		.table      = "mangle",
 		.target     = tee_tg4,
 		.targetsize = sizeof(struct xt_tee_tginfo),
 		.checkentry = tee_tg_check,
@@ -312,7 +263,6 @@ static struct xt_target tee_tg_reg[] __read_mostly = {
 		.name       = "TEE",
 		.revision   = 0,
 		.family     = NFPROTO_IPV6,
-		.table      = "mangle",
 		.target     = tee_tg6,
 		.targetsize = sizeof(struct xt_tee_tginfo),
 		.checkentry = tee_tg_check,
@@ -323,27 +273,12 @@ static struct xt_target tee_tg_reg[] __read_mostly = {
 
 static int __init tee_tg_init(void)
 {
-#ifdef WITH_CONNTRACK
-	/*
-	 * Set up fake conntrack (stolen from raw.patch):
-	 * - to never be deleted, not in any hashes
-	 */
-	atomic_set(&tee_track.ct_general.use, 1);
-
-	/* - and look it like as a confirmed connection */
-	set_bit(IPS_CONFIRMED_BIT, &tee_track.status);
-
-	/* Initialize fake conntrack so that NAT will skip it */
-	tee_track.status |= IPS_NAT_DONE_MASK;
-#endif
-
 	return xt_register_targets(tee_tg_reg, ARRAY_SIZE(tee_tg_reg));
 }
 
 static void __exit tee_tg_exit(void)
 {
 	xt_unregister_targets(tee_tg_reg, ARRAY_SIZE(tee_tg_reg));
-	/* [SC]: shoud not we cleanup tee_track here? */
 }
 
 module_init(tee_tg_init);

extensions/xt_condition.c

@@ -35,6 +35,7 @@ static unsigned int condition_gid_perms = 0;
 
 MODULE_AUTHOR("Stephane Ouellette <ouellettes@videotron.ca>");
 MODULE_AUTHOR("Massimiliano Hofer <max@nucleus.it>");
+MODULE_AUTHOR("Jan Engelhardt <jengelh@medozas.de>");
 MODULE_DESCRIPTION("Allows rules to match against condition variables");
 MODULE_LICENSE("GPL");
 module_param(condition_list_perms, uint, S_IRUSR | S_IWUSR);
@@ -55,7 +56,7 @@ struct condition_variable {
 
 /* proc_lock is a user context only semaphore used for write access */
 /*           to the conditions' list.                               */
-static struct semaphore proc_lock;
+static DEFINE_MUTEX(proc_lock);
 
 static LIST_HEAD(conditions_list);
 static struct proc_dir_entry *proc_net_condition;
@@ -69,7 +70,6 @@ static int condition_proc_read(char __user *buffer, char **start, off_t offset,
 	buffer[1] = '\n';
 	if (length >= 2)
 		*eof = true;
-
 	return 2;
 }
 
@@ -92,25 +92,19 @@ static int condition_proc_write(struct file *file, const char __user *buffer,
 			break;
 		}
 	}
-
 	return length;
 }
 
 static bool
-condition_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+condition_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	const struct xt_condition_mtinfo *info = par->matchinfo;
 	const struct condition_variable *var   = info->condvar;
-	bool x;
 
-	rcu_read_lock();
-	x = rcu_dereference(var->enabled);
-	rcu_read_unlock();
-
-	return x ^ info->invert;
+	return var->enabled ^ info->invert;
 }
 
-static bool condition_mt_check(const struct xt_mtchk_param *par)
+static int condition_mt_check(const struct xt_mtchk_param *par)
 {
 	struct xt_condition_mtinfo *info = par->matchinfo;
 	struct condition_variable *var;
@@ -122,41 +116,36 @@ static bool condition_mt_check(const struct xt_mtchk_param *par)
 		printk(KERN_INFO KBUILD_MODNAME ": name not allowed or too "
 		       "long: \"%.*s\"\n", (unsigned int)sizeof(info->name),
 		       info->name);
-		return false;
+		return -EINVAL;
 	}
-
 	/*
 	 * Let's acquire the lock, check for the condition and add it
 	 * or increase the reference counter.
 	 */
-	if (down_interruptible(&proc_lock))
-		return false;
-
+	mutex_lock(&proc_lock);
 	list_for_each_entry(var, &conditions_list, list) {
 		if (strcmp(info->name, var->status_proc->name) == 0) {
 			var->refcount++;
-			up(&proc_lock);
+			mutex_unlock(&proc_lock);
 			info->condvar = var;
-			return true;
+			return 0;
 		}
 	}
 
 	/* At this point, we need to allocate a new condition variable. */
 	var = kmalloc(sizeof(struct condition_variable), GFP_KERNEL);
-
 	if (var == NULL) {
-		up(&proc_lock);
-		return false;
+		mutex_unlock(&proc_lock);
+		return -ENOMEM;
 	}
 
 	/* Create the condition variable's proc file entry. */
 	var->status_proc = create_proc_entry(info->name, condition_list_perms,
 	                   proc_net_condition);
-
 	if (var->status_proc == NULL) {
 		kfree(var);
-		up(&proc_lock);
-		return false;
+		mutex_unlock(&proc_lock);
+		return -ENOMEM;
 	}
 
 	var->refcount = 1;
@@ -168,16 +157,12 @@ static bool condition_mt_check(const struct xt_mtchk_param *par)
 	wmb();
 	var->status_proc->read_proc  = condition_proc_read;
 	var->status_proc->write_proc = condition_proc_write;
-
-	list_add_rcu(&var->list, &conditions_list);
-
+	list_add(&var->list, &conditions_list);
 	var->status_proc->uid = condition_uid_perms;
 	var->status_proc->gid = condition_gid_perms;
-
-	up(&proc_lock);
-
+	mutex_unlock(&proc_lock);
 	info->condvar = var;
-	return true;
+	return 0;
 }
 
 static void condition_mt_destroy(const struct xt_mtdtor_param *par)
@@ -185,22 +170,15 @@ static void condition_mt_destroy(const struct xt_mtdtor_param *par)
 	const struct xt_condition_mtinfo *info = par->matchinfo;
 	struct condition_variable *var = info->condvar;
 
-	down(&proc_lock);
+	mutex_lock(&proc_lock);
 	if (--var->refcount == 0) {
-		list_del_rcu(&var->list);
+		list_del(&var->list);
 		remove_proc_entry(var->status_proc->name, proc_net_condition);
-		up(&proc_lock);
-		/*
-		 * synchronize_rcu() would be good enough, but
-		 * synchronize_net() guarantees that no packet
-		 * will go out with the old rule after
-		 * succesful removal.
-		 */
-		synchronize_net();
+		mutex_unlock(&proc_lock);
 		kfree(var);
 		return;
 	}
-	up(&proc_lock);
+	mutex_unlock(&proc_lock);
 }
 
 static struct xt_match condition_mt_reg[] __read_mostly = {
@@ -208,7 +186,7 @@ static struct xt_match condition_mt_reg[] __read_mostly = {
 		.name       = "condition",
 		.revision   = 1,
 		.family     = NFPROTO_IPV4,
-		.matchsize  = XT_ALIGN(sizeof(struct xt_condition_mtinfo)),
+		.matchsize  = sizeof(struct xt_condition_mtinfo),
 		.match      = condition_mt,
 		.checkentry = condition_mt_check,
 		.destroy    = condition_mt_destroy,
@@ -218,7 +196,7 @@ static struct xt_match condition_mt_reg[] __read_mostly = {
 		.name       = "condition",
 		.revision   = 1,
 		.family     = NFPROTO_IPV6,
-		.matchsize  = XT_ALIGN(sizeof(struct xt_condition_mtinfo)),
+		.matchsize  = sizeof(struct xt_condition_mtinfo),
 		.match      = condition_mt,
 		.checkentry = condition_mt_check,
 		.destroy    = condition_mt_destroy,
@@ -232,7 +210,7 @@ static int __init condition_mt_init(void)
 {
 	int ret;
 
-	sema_init(&proc_lock, 1);
+	mutex_init(&proc_lock);
 	proc_net_condition = proc_mkdir(dir_name, init_net__proc_net);
 	if (proc_net_condition == NULL)
 		return -EACCES;

extensions/xt_fuzzy.c

@@ -60,7 +60,7 @@ static uint8_t mf_low(uint32_t tx, uint32_t mini, uint32_t maxi)
 }
 
 static bool
-fuzzy_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+fuzzy_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	struct xt_fuzzy_mtinfo *info = (void *)par->matchinfo;
 	unsigned long amount;
@@ -125,7 +125,7 @@ fuzzy_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 	return false;
 }
 
-static bool fuzzy_mt_check(const struct xt_mtchk_param *par)
+static int fuzzy_mt_check(const struct xt_mtchk_param *par)
 {
 	const struct xt_fuzzy_mtinfo *info = par->matchinfo;
 
@@ -133,10 +133,10 @@ static bool fuzzy_mt_check(const struct xt_mtchk_param *par)
 	    info->maximum_rate > FUZZY_MAX_RATE ||
 	    info->minimum_rate >= info->maximum_rate) {
 		printk(KERN_INFO KBUILD_MODNAME ": bad values, please check.\n");
-		return false;
+		return -EDOM;
 	}
 
-	return true;
+	return 0;
 }
 
 static struct xt_match fuzzy_mt_reg[] __read_mostly = {
@@ -146,7 +146,7 @@ static struct xt_match fuzzy_mt_reg[] __read_mostly = {
 		.family     = NFPROTO_IPV4,
 		.match      = fuzzy_mt,
 		.checkentry = fuzzy_mt_check,
-		.matchsize  = XT_ALIGN(sizeof(struct xt_fuzzy_mtinfo)),
+		.matchsize  = sizeof(struct xt_fuzzy_mtinfo),
 		.me         = THIS_MODULE,
 	},
 	{
@@ -155,7 +155,7 @@ static struct xt_match fuzzy_mt_reg[] __read_mostly = {
 		.family     = NFPROTO_IPV6,
 		.match      = fuzzy_mt,
 		.checkentry = fuzzy_mt_check,
-		.matchsize  = XT_ALIGN(sizeof(struct xt_fuzzy_mtinfo)),
+		.matchsize  = sizeof(struct xt_fuzzy_mtinfo),
 		.me         = THIS_MODULE,
 	},
 };

extensions/xt_geoip.c

@@ -46,23 +46,28 @@ geoip_add_node(const struct geoip_country_user __user *umem_ptr)
 	struct geoip_country_user umem;
 	struct geoip_country_kernel *p;
 	struct geoip_subnet *s;
+	int ret;
 
 	if (copy_from_user(&umem, umem_ptr, sizeof(umem)) != 0)
-		return NULL;
+		return ERR_PTR(-EFAULT);
 
 	p = kmalloc(sizeof(struct geoip_country_kernel), GFP_KERNEL);
 	if (p == NULL)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	p->count   = umem.count;
 	p->cc      = umem.cc;
 
 	s = vmalloc(p->count * sizeof(struct geoip_subnet));
-	if (s == NULL)
+	if (s == NULL) {
+		ret = -ENOMEM;
 		goto free_p;
+	}
 	if (copy_from_user(s, (const void __user *)(unsigned long)umem.subnets,
-	    p->count * sizeof(struct geoip_subnet)) != 0)
+	    p->count * sizeof(struct geoip_subnet)) != 0) {
+		ret = -EFAULT;
 		goto free_s;
+	}
 
 	p->subnets = s;
 	atomic_set(&p->ref, 1);
@@ -78,7 +83,7 @@ geoip_add_node(const struct geoip_country_user __user *umem_ptr)
 	vfree(s);
  free_p:
 	kfree(p);
-	return NULL;
+	return ERR_PTR(ret);
 }
 
 static void geoip_try_remove_node(struct geoip_country_kernel *p)
@@ -121,13 +126,13 @@ static bool geoip_bsearch(const struct geoip_subnet *range,
 {
 	int mid;
 
-	if (hi < lo)
+	if (hi <= lo)
 		return false;
 	mid = (lo + hi) / 2;
 	if (range[mid].begin <= addr && addr <= range[mid].end)
 		return true;
 	if (range[mid].begin > addr)
-		return geoip_bsearch(range, addr, lo, mid - 1);
+		return geoip_bsearch(range, addr, lo, mid);
 	else if (range[mid].end < addr)
 		return geoip_bsearch(range, addr, mid + 1, hi);
 
@@ -136,7 +141,7 @@ static bool geoip_bsearch(const struct geoip_subnet *range,
 }
 
 static bool
-xt_geoip_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+xt_geoip_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	const struct xt_geoip_match_info *info = par->matchinfo;
 	const struct geoip_country_kernel *node;
@@ -168,7 +173,7 @@ xt_geoip_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 	return info->flags & XT_GEOIP_INV;
 }
 
-static bool xt_geoip_mt_checkentry(const struct xt_mtchk_param *par)
+static int xt_geoip_mt_checkentry(const struct xt_mtchk_param *par)
 {
 	struct xt_geoip_match_info *info = par->matchinfo;
 	struct geoip_country_kernel *node;
@@ -176,13 +181,15 @@ static bool xt_geoip_mt_checkentry(const struct xt_mtchk_param *par)
 
 	for (i = 0; i < info->count; i++) {
 		node = find_node(info->cc[i]);
-		if (node == NULL)
-			if ((node = geoip_add_node((const void __user *)(unsigned long)info->mem[i].user)) == NULL) {
+		if (node == NULL) {
+			node = geoip_add_node((const void __user *)(unsigned long)info->mem[i].user);
+			if (IS_ERR(node)) {
 				printk(KERN_ERR
-						"xt_geoip: unable to load '%c%c' into memory\n",
-						COUNTRY(info->cc[i]));
-				return false;
+						"xt_geoip: unable to load '%c%c' into memory: %ld\n",
+						COUNTRY(info->cc[i]), PTR_ERR(node));
+				return PTR_ERR(node);
 			}
+		}
 
 		/* Overwrite the now-useless pointer info->mem[i] with
 		 * a pointer to the node's kernelspace structure.
@@ -192,7 +199,7 @@ static bool xt_geoip_mt_checkentry(const struct xt_mtchk_param *par)
 		info->mem[i].kernel = node;
 	}
 
-	return true;
+	return 0;
 }
 
 static void xt_geoip_mt_destroy(const struct xt_mtdtor_param *par)

extensions/xt_gradm.h

@@ -0,0 +1,9 @@
+#ifndef _XT_GRADM_H
+#define _XT_GRADM_H
+
+struct xt_gradm_mtinfo {
+	__u16 flags;
+	__u16 invflags;
+};
+
+#endif

extensions/xt_iface.c

@@ -40,29 +40,46 @@ static const struct xt_iface_flag_pairs xt_iface_lookup[] =
 	{.iface_flag = XT_IFACE_DORMANT,	.iff_flag = IFF_DORMANT},
 };
 
+static const struct net_device *iface_get(const struct xt_iface_mtinfo *info,
+    const struct xt_action_param *par, struct net_device **put)
+{
+	if (info->flags & XT_IFACE_DEV_IN)
+		return par->in;
+	else if (info->flags & XT_IFACE_DEV_OUT)
+		return par->out;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24)
+	return *put = dev_get_by_name(&init_net, info->ifname);
+#else
+	return *put = dev_get_by_name(info->ifname);
+#endif
+}
+
+static bool iface_flagtest(unsigned int devflags, unsigned int flags,
+    unsigned int invflags)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(xt_iface_lookup); ++i)
+		if ((flags & xt_iface_lookup[i].iface_flag) &&
+		    !!(devflags & xt_iface_lookup[i].iff_flag) ^
+		    !(invflags & xt_iface_lookup[i].iface_flag))
+			return false;
+	return true;
+}
+
 static bool xt_iface_mt(const struct sk_buff *skb,
-    const struct xt_match_param *par)
+    struct xt_action_param *par)
 {
 	const struct xt_iface_mtinfo *info = par->matchinfo;
-	struct net_device *dev;
+	struct net_device *put = NULL;
+	const struct net_device *dev = iface_get(info, par, &put);
 	bool retval;
-	int i;
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24)
-	dev = dev_get_by_name(&init_net, info->ifname);
-#else
-	dev = dev_get_by_name(info->ifname);
-#endif
-	retval = dev != NULL;
-	if (retval) {
-		for (i = 0; i < ARRAY_SIZE(xt_iface_lookup) && retval; ++i) {
-			if (info->flags & xt_iface_lookup[i].iface_flag)
-				retval &= dev->flags & xt_iface_lookup[i].iff_flag;
-			if (info->invflags & xt_iface_lookup[i].iface_flag)
-				retval &= !(dev->flags & xt_iface_lookup[i].iff_flag);
-		}
-		dev_put(dev);
-	}
+	if (dev == NULL)
+		return false;
+	retval = iface_flagtest(dev->flags, info->flags, info->invflags);
+	if (put != NULL)
+		dev_put(put);
 	return retval;
 }
 
@@ -71,7 +88,7 @@ static struct xt_match xt_iface_mt_reg[] __read_mostly = {
 		.name       = "iface",
 		.revision   = 0,
 		.family     = NFPROTO_IPV4,
-		.matchsize  = XT_ALIGN(sizeof(struct xt_iface_mtinfo)),
+		.matchsize  = sizeof(struct xt_iface_mtinfo),
 		.match      = xt_iface_mt,
 		.me         = THIS_MODULE,
 	},
@@ -79,7 +96,7 @@ static struct xt_match xt_iface_mt_reg[] __read_mostly = {
 		.name       = "iface",
 		.revision   = 0,
 		.family     = NFPROTO_IPV6,
-		.matchsize  = XT_ALIGN(sizeof(struct xt_iface_mtinfo)),
+		.matchsize  = sizeof(struct xt_iface_mtinfo),
 		.match      = xt_iface_mt,
 		.me         = THIS_MODULE,
 	},

extensions/xt_iface.h

@@ -13,7 +13,8 @@ enum {
 	XT_IFACE_DYNAMIC     = 1 << 8,
 	XT_IFACE_LOWER_UP    = 1 << 9,
 	XT_IFACE_DORMANT     = 1 << 10,
-	XT_IFACE_IFACE       = 1 << 15,
+	XT_IFACE_DEV_IN      = 1 << 11,
+	XT_IFACE_DEV_OUT     = 1 << 12,
 };
 
 struct xt_iface_mtinfo {

extensions/xt_ipp2p.c

@@ -505,19 +505,18 @@ search_bittorrent(const unsigned char *payload, const unsigned int plen)
 		if (payload[0] == 0x13)
 			if (memcmp(payload + 1, "BitTorrent protocol", 19) == 0)
 				return IPP2P_BIT * 100;
-
 		/*
-		 * get tracker commandos, all starts with GET /
-		 * then it can follow: scrape| announce
-		 * and then ?hash_info=
+		 * Any tracker command starts with GET / then *may be* some file on web server
+		 * (e.g. announce.php or dupa.pl or whatever.cgi or NOTHING for tracker on root dir)
+		 * but *must have* one (or more) of strings listed below (true for scrape and announce)
 		 */
 		if (memcmp(payload, "GET /", 5) == 0) {
-			/* message scrape */
-			if (memcmp(payload + 5, "scrape?info_hash=", 17) == 0)
+			if (HX_memmem(payload, plen, "info_hash=", 9) != NULL)
 				return IPP2P_BIT * 100 + 1;
-			/* message announce */
-			if (memcmp(payload + 5, "announce?info_hash=", 19) == 0)
+			if (HX_memmem(payload, plen, "peer_id=", 8) != NULL)
 				return IPP2P_BIT * 100 + 2;
+			if (HX_memmem(payload, plen, "passkey=", 8) != NULL)
+				return IPP2P_BIT * 100 + 4;
 		}
 	} else {
 	    	/* bitcomet encryptes the first packet, so we have to detect another
@@ -809,7 +808,7 @@ static const struct {
 };
 
 static bool
-ipp2p_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+ipp2p_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	const struct ipt_p2p_info *info = par->matchinfo;
 	const unsigned char  *haystack;

extensions/xt_ipv4options.c

@@ -29,7 +29,7 @@ static uint32_t ipv4options_rd(const uint8_t *data, int len)
 }
 
 static bool ipv4options_mt(const struct sk_buff *skb,
-    const struct xt_match_param *par)
+    struct xt_action_param *par)
 {
 	const struct xt_ipv4options_mtinfo1 *info = par->matchinfo;
 	const struct iphdr *iph = ip_hdr(skb);
@@ -50,7 +50,7 @@ static struct xt_match ipv4options_mt_reg __read_mostly = {
 	.revision  = 1,
 	.family    = NFPROTO_IPV4,
 	.match     = ipv4options_mt,
-	.matchsize = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
+	.matchsize = sizeof(struct xt_ipv4options_mtinfo1),
 	.me        = THIS_MODULE,
 };
 

extensions/xt_length2.c

@@ -136,6 +136,30 @@ static bool xtlength_layer7(unsigned int *length, const struct sk_buff *skb,
 	}
 }
 
+static bool
+length2_mt(const struct sk_buff *skb, struct xt_action_param *par)
+{
+	const struct xt_length_mtinfo2 *info = par->matchinfo;
+	const struct iphdr *iph = ip_hdr(skb);
+	unsigned int len = 0;
+	bool hit = true;
+
+	if (info->flags & XT_LENGTH_LAYER3)
+		len = ntohs(iph->tot_len);
+	else if (info->flags & XT_LENGTH_LAYER4)
+		len = ntohs(iph->tot_len) - par->thoff;
+	else if (info->flags & XT_LENGTH_LAYER5)
+		hit = xtlength_layer5(&len, skb, iph->protocol, par->thoff);
+	else if (info->flags & XT_LENGTH_LAYER7)
+		hit = xtlength_layer7(&len, skb, iph->protocol, par->thoff);
+	if (!hit)
+		return false;
+
+	return (len >= info->min && len <= info->max) ^
+	       !!(info->flags & XT_LENGTH_INVERT);
+}
+
+#ifdef WITH_IPV6
 /**
  * llayer4_proto - figure out the L4 protocol in an IPv6 packet
  * @skb:	skb pointer
@@ -174,31 +198,7 @@ llayer4_proto(const struct sk_buff *skb, unsigned int *offset, bool *hotdrop)
 }
 
 static bool
-length2_mt(const struct sk_buff *skb, const struct xt_match_param *par)
-{
-	const struct xt_length_mtinfo2 *info = par->matchinfo;
-	const struct iphdr *iph = ip_hdr(skb);
-	unsigned int len = 0;
-	bool hit = true;
-
-	if (info->flags & XT_LENGTH_LAYER3)
-		len = ntohs(iph->tot_len);
-	else if (info->flags & XT_LENGTH_LAYER4)
-		len = ntohs(iph->tot_len) - par->thoff;
-	else if (info->flags & XT_LENGTH_LAYER5)
-		hit = xtlength_layer5(&len, skb, iph->protocol, par->thoff);
-	else if (info->flags & XT_LENGTH_LAYER7)
-		hit = xtlength_layer7(&len, skb, iph->protocol, par->thoff);
-	if (!hit)
-		return false;
-
-	return (len >= info->min && len <= info->max) ^
-	       !!(info->flags & XT_LENGTH_INVERT);
-}
-
-#ifdef WITH_IPV6
-static bool
-length2_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
+length2_mt6(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	const struct xt_length_mtinfo2 *info = par->matchinfo;
 	const struct ipv6hdr *iph = ipv6_hdr(skb);
@@ -207,9 +207,13 @@ length2_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
 	bool hit = true;
 
 	if (info->flags & XT_LENGTH_LAYER3) {
-		len = sizeof(struct ipv6hdr) + ntohs(iph->payload_len);
+		if (iph->payload_len == 0)
+			/* Jumbogram */
+			len = skb->len;
+		else
+			len = sizeof(struct ipv6hdr) + ntohs(iph->payload_len);
 	} else {
-		l4proto = llayer4_proto(skb, &thoff, par->hotdrop);
+		l4proto = llayer4_proto(skb, &thoff, &par->hotdrop);
 		if (l4proto == NEXTHDR_MAX)
 			return false;
 		if (info->flags & XT_LENGTH_LAYER4)

extensions/xt_lscan.c

@@ -171,7 +171,7 @@ static inline unsigned int lscan_mt_full(int mark,
 }
 
 static bool
-lscan_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+lscan_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	const struct xt_lscan_mtinfo *info = par->matchinfo;
 	enum ip_conntrack_info ctstate;
@@ -216,16 +216,16 @@ lscan_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 	       (info->match_gr && ctdata->mark == mark_grscan);
 }
 
-static bool lscan_mt_check(const struct xt_mtchk_param *par)
+static int lscan_mt_check(const struct xt_mtchk_param *par)
 {
 	const struct xt_lscan_mtinfo *info = par->matchinfo;
 
 	if ((info->match_stealth & ~1) || (info->match_syn & ~1) ||
 	    (info->match_cn & ~1) || (info->match_gr & ~1)) {
 		printk(KERN_WARNING PFX "Invalid flags\n");
-		return false;
+		return -EINVAL;
 	}
-	return true;
+	return 0;
 }
 
 static struct xt_match lscan_mt_reg[] __read_mostly = {

extensions/xt_psd.c

@@ -100,7 +100,7 @@ static inline int hashfunc(struct in_addr addr)
 }
 
 static bool
-xt_psd_match(const struct sk_buff *pskb, const struct xt_match_param *match)
+xt_psd_match(const struct sk_buff *pskb, struct xt_action_param *match)
 {
 	const struct iphdr *iph;
 	const struct tcphdr *tcph;
@@ -312,7 +312,7 @@ out_match:
 
 static struct xt_match xt_psd_reg __read_mostly = {
 	.name		= "psd",
-    .family		= AF_INET,
+	.family    = NFPROTO_IPV4,
 	.revision  = 1,
 	.match		= xt_psd_match,
 	.matchsize	= sizeof(struct xt_psd_info),

extensions/xt_quota2.c

@@ -144,28 +144,26 @@ q2_get_counter(const struct xt_quota_mtinfo2 *q)
 	return NULL;
 }
 
-static bool quota_mt2_check(const struct xt_mtchk_param *par)
+static int quota_mt2_check(const struct xt_mtchk_param *par)
 {
 	struct xt_quota_mtinfo2 *q = par->matchinfo;
 
 	if (q->flags & ~XT_QUOTA_MASK)
-		return false;
+		return -EINVAL;
 
 	q->name[sizeof(q->name)-1] = '\0';
 	if (*q->name == '.' || strchr(q->name, '/') != NULL) {
-		printk(KERN_ERR "xt_quota<%u>: illegal name\n",
-		       par->match->revision);
-		return false;
+		printk(KERN_ERR "xt_quota.3: illegal name\n");
+		return -EINVAL;
 	}
 
 	q->master = q2_get_counter(q);
 	if (q->master == NULL) {
-		printk(KERN_ERR "xt_quota<%u>: memory alloc failure\n",
-		       par->match->revision);
-		return false;
+		printk(KERN_ERR "xt_quota.3: memory alloc failure\n");
+		return -ENOMEM;
 	}
 
-	return true;
+	return 0;
 }
 
 static void quota_mt2_destroy(const struct xt_mtdtor_param *par)
@@ -191,7 +189,7 @@ static void quota_mt2_destroy(const struct xt_mtdtor_param *par)
 }
 
 static bool
-quota_mt2(const struct sk_buff *skb, const struct xt_match_param *par)
+quota_mt2(const struct sk_buff *skb, struct xt_action_param *par)
 {
 	struct xt_quota_mtinfo2 *q = (void *)par->matchinfo;
 	struct xt_quota_counter *e = q->master;

geoip/.gitignore

@@ -0,0 +1,6 @@
+/BE
+/LE
+/GeoIPCountryCSV.zip
+/GeoIPCountryWhois.csv
+/GeoIPv6.csv
+/GeoIPv6.csv.gz

geoip/Makefile.am

@@ -0,0 +1,3 @@
+# -*- Makefile -*-
+
+pkglibexec_SCRIPTS = geoip_build_db.pl geoip_download.sh

geoip/geoip_build_db.pl

@@ -0,0 +1,54 @@
+#!/usr/bin/perl
+#
+#	Converter for MaxMind CSV database to binary, for xt_geoip
+#	Copyright © Jan Engelhardt <jengelh@medozas.de>, 2008
+#
+#	Use -b argument to create big-endian tables.
+#
+use Getopt::Long;
+use IO::Handle;
+use Text::CSV_XS; # or trade for Text::CSV
+use strict;
+
+my %country;
+my %names;
+my $csv = Text::CSV_XS->new({binary => 0, eol => $/}); # or Text::CSV
+my $mode = "VV";
+my $target_dir = ".";
+
+&Getopt::Long::Configure(qw(bundling));
+&GetOptions(
+	"D=s" => \$target_dir,
+	"b"   => sub { $mode = "NN"; },
+);
+
+if (!-d $target_dir) {
+	print STDERR "Target directory $target_dir does not exist.\n";
+	exit 1;
+}
+
+while (my $row = $csv->getline(*ARGV)) {
+	if (!defined($country{$row->[4]})) {
+		$country{$row->[4]} = [];
+		$names{$row->[4]} = $row->[5];
+	}
+	my $c = $country{$row->[4]};
+	push(@$c, [$row->[2], $row->[3]]);
+	if ($. % 4096 == 0) {
+		print STDERR "\r\e[2K$. entries";
+	}
+}
+
+print STDERR "\r\e[2K$. entries total\n";
+
+foreach my $iso_code (sort keys %country) {
+	printf "%5u ranges for %s %s\n",
+		scalar(@{$country{$iso_code}}),
+		$iso_code, $names{$iso_code};
+
+	open(my $fh, "> $target_dir/".uc($iso_code).".iv0");
+	foreach my $range (@{$country{$iso_code}}) {
+		print $fh pack($mode, $range->[0], $range->[1]);
+	}
+	close $fh;
+}

geoip/geoip_download.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+rm -f GeoIPv6.csv{,.gz} GeoIPCountryCSV.zip GeoIPCountryWhois.csv;
+wget \
+	http://geolite.maxmind.com/download/geoip/database/GeoIPv6.csv.gz \
+	http://geolite.maxmind.com/download/geoip/database/GeoIPCountryCSV.zip;
+gzip -d GeoIPv6.csv.gz;
+unzip GeoIPCountryCSV.zip;

include/linux/netfilter.h

@@ -3,6 +3,7 @@
 
 #include <linux/types.h>
 
+
 /* Responses from hook functions. */
 #define NF_DROP 0
 #define NF_ACCEPT 1
@@ -37,6 +38,16 @@ enum nf_inet_hooks {
 	NF_INET_NUMHOOKS
 };
 
+enum {
+	NFPROTO_UNSPEC =  0,
+	NFPROTO_IPV4   =  2,
+	NFPROTO_ARP    =  3,
+	NFPROTO_BRIDGE =  7,
+	NFPROTO_IPV6   = 10,
+	NFPROTO_DECNET = 12,
+	NFPROTO_NUMPROTO,
+};
+
 union nf_inet_addr {
 	__u32		all[4];
 	__be32		ip;