diff --git a/extensions/libxt_HMARK.c b/extensions/libxt_HMARK.c
new file mode 100644
index 0000000..ee2629d
--- /dev/null
+++ b/extensions/libxt_HMARK.c
@@ -0,0 +1,441 @@
+/*
+ * (C) 2012 by Hans Schillstrom <hans.schillstrom@ericsson.com>
+ * (C) 2012 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * 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.
+ *
+ * Description: shared library add-on to iptables to add HMARK target support
+ *
+ * Initial development by Hans Schillstrom. Pablo's improvements to this piece
+ * of software has been sponsored by Sophos Astaro <http://www.sophos.com>.
+ */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "xtables.h"
+#include <linux/netfilter/xt_HMARK.h>
+
+static void HMARK_help(void)
+{
+	printf(
+"HMARK target options, i.e. modify hash calculation by:\n"
+"  --hmark-tuple [src|dst|sport|dport|spi|proto|ct][,...]\n"
+"  --hmark-mod value		    nfmark modulus value\n"
+"  --hmark-offset value		    Last action add value to nfmark\n\n"
+"  --hmark-rnd			    Random see for hashing\n"
+" Alternatively, fine tuning of what will be included in hash calculation\n"
+"  --hmark-src-prefix length	    Source address mask CIDR prefix\n"
+"  --hmark-dst-prefix length	    Dest address mask CIDR prefix\n"
+"  --hmark-sport-mask value	    Mask src port with value\n"
+"  --hmark-dport-mask value	    Mask dst port with value\n"
+"  --hmark-spi-mask value	    For esp and ah AND spi with value\n"
+"  --hmark-sport-set value	    OR src port with value\n"
+"  --hmark-dport-set value	    OR dst port with value\n"
+"  --hmark-spi-set value	    For esp and ah OR spi with value\n"
+"  --hmark-proto-mask value	    Mask Protocol with value\n");
+}
+
+#define hi struct xt_hmark_info
+
+enum {
+	O_HMARK_SADDR_MASK,
+	O_HMARK_DADDR_MASK,
+	O_HMARK_SPI,
+	O_HMARK_SPI_MASK,
+	O_HMARK_SPORT,
+	O_HMARK_DPORT,
+	O_HMARK_SPORT_MASK,
+	O_HMARK_DPORT_MASK,
+	O_HMARK_PROTO_MASK,
+	O_HMARK_RND,
+	O_HMARK_MODULUS,
+	O_HMARK_OFFSET,
+	O_HMARK_CT,
+	O_HMARK_TYPE,
+};
+
+#define HMARK_OPT_PKT_MASK			\
+	((1 << O_HMARK_SADDR_MASK)		| \
+	 (1 << O_HMARK_DADDR_MASK)		| \
+	 (1 << O_HMARK_SPI_MASK)		| \
+	 (1 << O_HMARK_SPORT_MASK)		| \
+	 (1 << O_HMARK_DPORT_MASK)		| \
+	 (1 << O_HMARK_PROTO_MASK)		| \
+	 (1 << O_HMARK_SPI_MASK)		| \
+	 (1 << O_HMARK_SPORT)			| \
+	 (1 << O_HMARK_DPORT)			| \
+	 (1 << O_HMARK_SPI))
+
+static const struct xt_option_entry HMARK_opts[] = {
+	{ .name  = "hmark-tuple",
+	  .type  = XTTYPE_STRING,
+	  .id	 = O_HMARK_TYPE,
+	},
+	{ .name  = "hmark-src-prefix",
+	  .type  = XTTYPE_PLENMASK,
+	  .id	 = O_HMARK_SADDR_MASK,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, src_mask)
+	},
+	{ .name  = "hmark-dst-prefix",
+	  .type  = XTTYPE_PLENMASK,
+	  .id	 = O_HMARK_DADDR_MASK,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, dst_mask)
+	},
+	{ .name  = "hmark-sport-mask",
+	  .type  = XTTYPE_UINT16,
+	  .id	 = O_HMARK_SPORT_MASK,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, port_mask.p16.src)
+	},
+	{ .name  = "hmark-dport-mask",
+	  .type  = XTTYPE_UINT16,
+	  .id	 = O_HMARK_DPORT_MASK,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, port_mask.p16.dst)
+	},
+	{ .name  = "hmark-spi-mask",
+	  .type  = XTTYPE_UINT32,
+	  .id	 = O_HMARK_SPI_MASK,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, port_mask.v32)
+	},
+	{ .name  = "hmark-sport",
+	  .type  = XTTYPE_UINT16,
+	  .id	 = O_HMARK_SPORT,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, port_set.p16.src)
+	},
+	{ .name  = "hmark-dport",
+	  .type  = XTTYPE_UINT16,
+	  .id	 = O_HMARK_DPORT,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, port_set.p16.dst)
+	},
+	{ .name  = "hmark-spi",
+	  .type  = XTTYPE_UINT32,
+	  .id	 = O_HMARK_SPI,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, port_set.v32)
+	},
+	{ .name  = "hmark-proto-mask",
+	  .type  = XTTYPE_UINT16,
+	  .id	 = O_HMARK_PROTO_MASK,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, proto_mask)
+	},
+	{ .name  = "hmark-rnd",
+	  .type  = XTTYPE_UINT32,
+	  .id	 = O_HMARK_RND,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, hashrnd)
+	},
+	{ .name = "hmark-mod",
+	  .type = XTTYPE_UINT32,
+	  .id = O_HMARK_MODULUS,
+	  .min = 1,
+	  .flags = XTOPT_PUT | XTOPT_MAND, XTOPT_POINTER(hi, hmodulus)
+	},
+	{ .name  = "hmark-offset",
+	  .type  = XTTYPE_UINT32,
+	  .id	 = O_HMARK_OFFSET,
+	  .flags = XTOPT_PUT, XTOPT_POINTER(hi, hoffset)
+	},
+	XTOPT_TABLEEND,
+};
+
+static int
+hmark_parse(const char *type, size_t len, struct xt_hmark_info *info,
+	    unsigned int *xflags)
+{
+	if (strncasecmp(type, "ct", len) == 0) {
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_CT);
+		*xflags |= (1 << O_HMARK_CT);
+	} else if (strncasecmp(type, "src", len) == 0) {
+		memset(&info->src_mask, 0xff, sizeof(info->src_mask));
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_SADDR_MASK);
+		*xflags |= (1 << O_HMARK_SADDR_MASK);
+	} else if (strncasecmp(type, "dst", len) == 0) {
+		memset(&info->dst_mask, 0xff, sizeof(info->dst_mask));
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_DADDR_MASK);
+		*xflags |= (1 << O_HMARK_DADDR_MASK);
+	} else if (strncasecmp(type, "sport", len) == 0) {
+		memset(&info->port_mask.p16.src, 0xff,
+			sizeof(info->port_mask.p16.src));
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_SPORT_MASK);
+		*xflags |= (1 << O_HMARK_SPORT_MASK);
+	} else if (strncasecmp(type, "dport", len) == 0) {
+		memset(&info->port_mask.p16.dst, 0xff,
+			sizeof(info->port_mask.p16.dst));
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_DPORT_MASK);
+		*xflags |= (1 << O_HMARK_DPORT_MASK);
+	} else if (strncasecmp(type, "proto", len) == 0) {
+		memset(&info->proto_mask, 0xff, sizeof(info->proto_mask));
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_PROTO_MASK);
+		*xflags |= (1 << O_HMARK_PROTO_MASK);
+	} else if (strncasecmp(type, "spi", len) == 0) {
+		memset(&info->port_mask.v32, 0xff, sizeof(info->port_mask.v32));
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_SPI_MASK);
+		*xflags |= (1 << O_HMARK_SPI_MASK);
+	} else
+		return 0;
+
+	return 1;
+}
+
+static void
+hmark_parse_type(struct xt_option_call *cb)
+{
+	const char *arg = cb->arg;
+	struct xt_hmark_info *info = cb->data;
+	const char *comma;
+
+	while ((comma = strchr(arg, ',')) != NULL) {
+		if (comma == arg ||
+		    !hmark_parse(arg, comma-arg, info, &cb->xflags))
+			xtables_error(PARAMETER_PROBLEM, "Bad type \"%s\"", arg);
+		arg = comma+1;
+	}
+	if (!*arg)
+		xtables_error(PARAMETER_PROBLEM, "\"--hmark-tuple\" requires "
+						 "a list of types with no "
+						 "spaces, e.g. "
+						 "src,dst,sport,dport,proto");
+	if (strlen(arg) == 0 ||
+	    !hmark_parse(arg, strlen(arg), info, &cb->xflags))
+		xtables_error(PARAMETER_PROBLEM, "Bad type \"%s\"", arg);
+}
+
+static void HMARK_parse(struct xt_option_call *cb, int plen)
+{
+	struct xt_hmark_info *info = cb->data;
+
+	xtables_option_parse(cb);
+
+	switch (cb->entry->id) {
+	case O_HMARK_TYPE:
+		hmark_parse_type(cb);
+		break;
+	case O_HMARK_SADDR_MASK:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_SADDR_MASK);
+		break;
+	case O_HMARK_DADDR_MASK:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_DADDR_MASK);
+		break;
+	case O_HMARK_SPI:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_SPI_MASK);
+		break;
+	case O_HMARK_SPORT:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_SPORT);
+		break;
+	case O_HMARK_DPORT:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_DPORT);
+		break;
+	case O_HMARK_SPORT_MASK:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_SPORT_MASK);
+		break;
+	case O_HMARK_DPORT_MASK:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_DPORT_MASK);
+		break;
+	case O_HMARK_PROTO_MASK:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_PROTO_MASK);
+		break;
+	case O_HMARK_RND:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_RND);
+		break;
+	case O_HMARK_MODULUS:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_MODULUS);
+		break;
+	case O_HMARK_OFFSET:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_OFFSET);
+		break;
+	case O_HMARK_CT:
+		info->flags |= XT_HMARK_FLAG(XT_HMARK_CT);
+		break;
+	}
+	cb->xflags |= (1 << cb->entry->id);
+}
+
+static void HMARK_ip4_parse(struct xt_option_call *cb)
+{
+	HMARK_parse(cb, 32);
+}
+static void HMARK_ip6_parse(struct xt_option_call *cb)
+{
+	HMARK_parse(cb, 128);
+}
+
+static void HMARK_check(struct xt_fcheck_call *cb)
+{
+	if (!(cb->xflags & (1 << O_HMARK_MODULUS)))
+		xtables_error(PARAMETER_PROBLEM, "--hmark-mod is mandatory");
+	if (!(cb->xflags & (1 << O_HMARK_RND)))
+		xtables_error(PARAMETER_PROBLEM, "--hmark-rnd is mandatory");
+	if (cb->xflags & (1 << O_HMARK_SPI_MASK) &&
+	    (cb->xflags & (1 << O_HMARK_SPORT_MASK ||
+	     cb->xflags & (1 << O_HMARK_DPORT_MASK))))
+		xtables_error(PARAMETER_PROBLEM, "you cannot use "
+				"--hmark-spi-mask and --hmark-?port-mask,"
+				"at the same time");
+	if (!((cb->xflags & HMARK_OPT_PKT_MASK) ||
+	       cb->xflags & (1 << O_HMARK_CT)))
+		xtables_error(PARAMETER_PROBLEM, "you have to specify "
+				"--hmark-tuple at least");
+}
+
+static void HMARK_print(const struct xt_hmark_info *info)
+{
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPORT))
+		printf("sport-mask 0x%x ", htons(info->port_mask.p16.src));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DPORT))
+		printf("dport-mask 0x%x ", htons(info->port_mask.p16.dst));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPI))
+		printf("spi-mask 0x%x ", htonl(info->port_mask.v32));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPORT_MASK))
+		printf("sport-set 0x%x ", htons(info->port_set.p16.src));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DPORT_MASK))
+		printf("dport-set 0x%x ", htons(info->port_set.p16.dst));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPI_MASK))
+		printf("spi-set 0x%x ", htonl(info->port_set.v32));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_PROTO_MASK))
+		printf("proto-mask 0x%x ", info->proto_mask);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_RND))
+		printf("rnd 0x%x ", info->hashrnd);
+}
+
+static void HMARK_ip6_print(const void *ip,
+			    const struct xt_entry_target *target, int numeric)
+{
+	const struct xt_hmark_info *info =
+			(const struct xt_hmark_info *)target->data;
+
+	printf(" HMARK ");
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_MODULUS))
+		printf("mod %u ", info->hmodulus);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_OFFSET))
+		printf("+ 0x%x ", info->hoffset);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_CT))
+		printf("ct, ");
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SADDR_MASK))
+		printf("src-prefix %s ",
+		       xtables_ip6mask_to_numeric(&info->src_mask.in6) + 1);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DADDR_MASK))
+		printf("dst-prefix %s ",
+		       xtables_ip6mask_to_numeric(&info->dst_mask.in6) + 1);
+	HMARK_print(info);
+}
+static void HMARK_ip4_print(const void *ip,
+			    const struct xt_entry_target *target, int numeric)
+{
+	const struct xt_hmark_info *info =
+		(const struct xt_hmark_info *)target->data;
+
+	printf(" HMARK ");
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_MODULUS))
+		printf("mod %u ", info->hmodulus);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_OFFSET))
+		printf("+ 0x%x ", info->hoffset);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_CT))
+		printf("ct, ");
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SADDR_MASK))
+		printf("src-prefix %s ",
+		       xtables_ipmask_to_numeric(&info->src_mask.in) + 1);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DADDR_MASK))
+		printf("dst-prefix %s ",
+		       xtables_ipmask_to_numeric(&info->dst_mask.in) + 1);
+	HMARK_print(info);
+}
+
+static void HMARK_save(const struct xt_hmark_info *info)
+{
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPORT_MASK))
+		printf(" --hmark-sport-mask 0x%04x",
+		       htons(info->port_mask.p16.src));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DPORT_MASK))
+		printf(" --hmark-dport-mask 0x%04x",
+		       htons(info->port_mask.p16.dst));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPI))
+		printf(" --hmark-spi-mask 0x%08x",
+		       htonl(info->port_mask.v32));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPORT))
+		printf(" --hmark-sport-set 0x%04x",
+		       htons(info->port_set.p16.src));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DPORT))
+		printf(" --hmark-dport-set 0x%04x",
+		       htons(info->port_set.p16.dst));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SPI_MASK))
+		printf(" --hmark-spi-set 0x%08x", htonl(info->port_set.v32));
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_PROTO_MASK))
+		printf(" --hmark-proto-mask 0x%02x", info->proto_mask);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_RND))
+		printf(" --hmark-rnd 0x%08x", info->hashrnd);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_MODULUS))
+		printf(" --hmark-mod %u", info->hmodulus);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_OFFSET))
+		printf(" --hmark-offset %u", info->hoffset);
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_CT))
+		printf(" --hmark-tuple ct");
+}
+
+static void HMARK_ip6_save(const void *ip, const struct xt_entry_target *target)
+{
+	const struct xt_hmark_info *info =
+		(const struct xt_hmark_info *)target->data;
+	int ret;
+
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SADDR_MASK)) {
+		ret = xtables_ip6mask_to_cidr(&info->src_mask.in6);
+		printf(" --hmark-src-prefix %d", ret);
+	}
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DADDR_MASK)) {
+		ret = xtables_ip6mask_to_cidr(&info->dst_mask.in6);
+		printf(" --hmark-dst-prefix %d", ret);
+	}
+	HMARK_save(info);
+}
+
+static void HMARK_ip4_save(const void *ip, const struct xt_entry_target *target)
+{
+	const struct xt_hmark_info *info =
+		(const struct xt_hmark_info *)target->data;
+	int ret;
+
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_SADDR_MASK)) {
+		ret = xtables_ipmask_to_cidr(&info->src_mask.in);
+		printf(" --hmark-src-prefix %d", ret);
+	}
+	if (info->flags & XT_HMARK_FLAG(XT_HMARK_DADDR_MASK)) {
+		ret = xtables_ipmask_to_cidr(&info->dst_mask.in);
+		printf(" --hmark-dst-prefix %d", ret);
+	}
+	HMARK_save(info);
+}
+
+static struct xtables_target mark_tg_reg[] = {
+	{
+		.family        = NFPROTO_IPV4,
+		.name	       = "HMARK",
+		.version       = XTABLES_VERSION,
+		.size	       = XT_ALIGN(sizeof(struct xt_hmark_info)),
+		.userspacesize = XT_ALIGN(sizeof(struct xt_hmark_info)),
+		.help	       = HMARK_help,
+		.print	       = HMARK_ip4_print,
+		.save	       = HMARK_ip4_save,
+		.x6_parse      = HMARK_ip4_parse,
+		.x6_fcheck     = HMARK_check,
+		.x6_options    = HMARK_opts,
+	},
+	{
+		.family        = NFPROTO_IPV6,
+		.name	       = "HMARK",
+		.version       = XTABLES_VERSION,
+		.size	       = XT_ALIGN(sizeof(struct xt_hmark_info)),
+		.userspacesize = XT_ALIGN(sizeof(struct xt_hmark_info)),
+		.help	       = HMARK_help,
+		.print	       = HMARK_ip6_print,
+		.save	       = HMARK_ip6_save,
+		.x6_parse      = HMARK_ip6_parse,
+		.x6_fcheck     = HMARK_check,
+		.x6_options    = HMARK_opts,
+	},
+};
+
+void _init(void)
+{
+	xtables_register_targets(mark_tg_reg, ARRAY_SIZE(mark_tg_reg));
+}
diff --git a/extensions/libxt_HMARK.man b/extensions/libxt_HMARK.man
new file mode 100644
index 0000000..6b36b58
--- /dev/null
+++ b/extensions/libxt_HMARK.man
@@ -0,0 +1,60 @@
+Like MARK, i.e. set the fwmark, but the mark is calculated from hashing
+packet selector at choice. You have also to specify the mark range and,
+optionally, the offset to start from. ICMP error messages are inspected
+and used to calculate the hashing.
+.PP
+Existing options are:
+.TP
+\fB\-\-hmark\-tuple\fP tuple\fI\fP
+Possible tuple members are:
+.B src
+meaning source address (IPv4, IPv6 address),
+.B dst
+meaning destination address (IPv4, IPv6 address),
+.B sport
+meaning source port (TCP, UDP, UDPlite, SCTP, DCCP),
+.B dport
+meaning destination port (TCP, UDP, UDPlite, SCTP, DCCP),
+.B spi
+meaning Security Parameter Index (AH, ESP), and
+.B ct
+meaning the usage of the conntrack tuple instead of the packet selectors.
+.TP
+\fB\-\-hmark\-mod\fP \fIvalue (must be > 0)\fP
+Modulus for hash calculation (to limit the range of possible marks)
+.TP
+\fB\-\-hmark\-offset\fP \fIvalue\fP
+Offset to start marks from.
+.TP
+For advanced usage, instead of using \-\-hmark\-tuple, you can specify custom
+prefixes and masks:
+.TP
+\fB\-\-hmark\-src\-prefix\fP \fIcidr\fP
+The source address mask in CIDR notation.
+.TP
+\fB\-\-hmark\-dst\-prefix\fP \fIcidr\fP
+The destination address mask in CIDR notation.
+.TP
+\fB\-\-hmark\-sport\-mask\fP \fIvalue\fP
+A 16 bit source port mask in hexadecimal.
+.TP
+\fB\-\-hmark\-dport\-mask\fP \fIvalue\fP
+A 16 bit destination port mask in hexadecimal.
+.TP
+\fB\-\-hmark\-spi\-mask\fP \fIvalue\fP
+A 32 bit field with spi mask.
+.TP
+\fB\-\-hmark\-proto\-mask\fP \fIvalue\fP
+An 8 bit field with layer 4 protocol number.
+.TP
+\fB\-\-hmark\-rnd\fP \fIvalue\fP
+A 32 bit random custom value to feed hash calculation.
+.PP
+\fIExamples:\fP
+.PP
+iptables \-t mangle \-A PREROUTING \-m state \-\-state NEW
+ \-j HMARK \-\-hmark-tuple ct \-\-hmark-offset 10000 \-\-hmark\-mod 10
+\-\-hmark\-rnd 0xfeedcafe
+.PP
+iptables \-t mangle \-A PREROUTING -j HMARK \-\-hmark-tuple src,dst,proto
+\-\-hmark-mod 10 \-\-hmark\-rand 0xdeafbeef
diff --git a/include/linux/netfilter/xt_HMARK.h b/include/linux/netfilter/xt_HMARK.h
new file mode 100644
index 0000000..826fc58
--- /dev/null
+++ b/include/linux/netfilter/xt_HMARK.h
@@ -0,0 +1,50 @@
+#ifndef XT_HMARK_H_
+#define XT_HMARK_H_
+
+#include <linux/types.h>
+
+enum {
+	XT_HMARK_SADDR_MASK,
+	XT_HMARK_DADDR_MASK,
+	XT_HMARK_SPI,
+	XT_HMARK_SPI_MASK,
+	XT_HMARK_SPORT,
+	XT_HMARK_DPORT,
+	XT_HMARK_SPORT_MASK,
+	XT_HMARK_DPORT_MASK,
+	XT_HMARK_PROTO_MASK,
+	XT_HMARK_RND,
+	XT_HMARK_MODULUS,
+	XT_HMARK_OFFSET,
+	XT_HMARK_CT,
+	XT_HMARK_METHOD_L3,
+	XT_HMARK_METHOD_L3_4,
+};
+#define XT_HMARK_FLAG(flag)	(1 << flag)
+
+union hmark_ports {
+	struct {
+		__u16	src;
+		__u16	dst;
+	} p16;
+	struct {
+		__be16	src;
+		__be16	dst;
+	} b16;
+	__u32	v32;
+	__be32	b32;
+};
+
+struct xt_hmark_info {
+	union nf_inet_addr	src_mask;
+	union nf_inet_addr	dst_mask;
+	union hmark_ports	port_mask;
+	union hmark_ports	port_set;
+	__u32			flags;
+	__u16			proto_mask;
+	__u32			hashrnd;
+	__u32			hmodulus;
+	__u32			hoffset;	/* Mark offset to start from */
+};
+
+#endif /* XT_HMARK_H_ */