Import patch ipxfrm-20040707_2.diff

(Logical change 1.53)

7 files changed, 2224 insertions, 2 deletions

diff --git a/ip/Makefile b/ip/Makefile
index 2aa00518..df4fbda1 100644
--- a/ip/Makefile
+++ b/ip/Makefile
@@ -1,6 +1,6 @@
 IPOBJ=ip.o ipaddress.o iproute.o iprule.o \
     rtm_map.o iptunnel.o ipneigh.o iplink.o ipmaddr.o \
-    ipmonitor.o ipmroute.o
+    ipmonitor.o ipmroute.o ipxfrm.o xfrm_state.o xfrm_policy.o
 
 RTMONOBJ=rtmon.o
 
diff --git a/ip/ip.c b/ip/ip.c
index fe379926..6358ec43 100644
--- a/ip/ip.c
+++ b/ip/ip.c
@@ -40,7 +40,7 @@ static void usage(void)
 	fprintf(stderr,
 "Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
 "where  OBJECT := { link | addr | route | rule | neigh | tunnel |\n"
-"                   maddr | mroute | monitor }\n"
+"                   maddr | mroute | monitor | xfrm }\n"
 "       OPTIONS := { -V[ersion] | -s[tatistics] | -r[esolve] |\n"
 "                    -f[amily] { inet | inet6 | ipx | dnet | link } | -o[neline] }\n");
 	exit(-1);
@@ -136,6 +136,8 @@ int main(int argc, char **argv)
 		return do_iptunnel(argc-1, argv+1);
 	if (strcmp(basename, "ipmonitor") == 0)
 		return do_ipmonitor(argc-1, argv+1);
+	if (strcmp(basename, "ipxfrm") == 0)
+		return do_xfrm(argc-1, argv+1);
 
 	if (argc > 1) {
 		if (matches(argv[1], "address") == 0)
@@ -158,6 +160,8 @@ int main(int argc, char **argv)
 			return do_iptunnel(argc-2, argv+2);
 		if (matches(argv[1], "monitor") == 0)
 			return do_ipmonitor(argc-2, argv+2);
+		if (matches(argv[1], "xfrm") == 0)
+			return do_xfrm(argc-2, argv+2);
 		if (matches(argv[1], "help") == 0)
 			usage();
 		fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv[1]);
diff --git a/ip/ip_common.h b/ip/ip_common.h
index 5ac43218..598c998a 100644
--- a/ip/ip_common.h
+++ b/ip/ip_common.h
@@ -18,3 +18,4 @@ extern int do_iplink(int argc, char **argv);
 extern int do_ipmonitor(int argc, char **argv);
 extern int do_multiaddr(int argc, char **argv);
 extern int do_multiroute(int argc, char **argv);
+extern int do_xfrm(int argc, char **argv);
diff --git a/ip/ipxfrm.c b/ip/ipxfrm.c
index e69de29b..786600bd 100644
--- a/ip/ipxfrm.c
+++ b/ip/ipxfrm.c
@@ -0,0 +1,808 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/*
+ * based on ip.c, iproute.c
+ */
+/*
+ * Authors:
+ *	Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <time.h>
+#include <netdb.h>
+#include <net/if.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/xfrm.h>
+
+#include "utils.h"
+#include "xfrm.h"
+
+struct xfrm_filter filter;
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+	fprintf(stderr, 
+		"Usage: ip xfrm XFRM_OBJECT { COMMAND | help }\n"
+		"where  XFRM_OBJECT := { state | policy }\n");
+	exit(-1);
+}
+
+const char *strxf_flags(__u8 flags)
+{
+	static char str[16];
+	const int sn = sizeof(flags) * 8 - 1;
+	__u8 b;
+	int i = 0;
+
+	for (b = (1 << sn); b > 0; b >>= 1)
+		str[i++] = ((b & flags) ? '1' : '0');
+	str[i] = '\0';
+
+	return str;
+}
+
+const char *strxf_share(__u8 share)
+{
+	static char str[32];
+
+	switch (share) {
+	case XFRM_SHARE_ANY:
+		strcpy(str, "any");
+		break;
+	case XFRM_SHARE_SESSION:
+		strcpy(str, "session");
+		break;
+	case XFRM_SHARE_USER:
+		strcpy(str, "user");
+		break;
+	case XFRM_SHARE_UNIQUE:
+		strcpy(str, "unique");
+		break;
+	default:
+		sprintf(str, "unknown-share(%d)", share);
+		break;
+	}
+
+	return str;
+}
+
+void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
+			__u8 mode, __u32 reqid, __u16 family, FILE *fp,
+			const char *prefix)
+{
+	char abuf[256];
+	__u32 spi;
+	struct protoent *pp;
+	char pbuf[32];
+	char *p;
+
+	if (prefix)
+		fprintf(fp, prefix);
+
+	memset(abuf, '\0', sizeof(abuf));
+	fprintf(fp, "%s ", rt_addr_n2a(family, sizeof(*saddr),
+				       saddr, abuf, sizeof(abuf)));
+	memset(abuf, '\0', sizeof(abuf));
+	fprintf(fp, "%s\n", rt_addr_n2a(family, sizeof(id->daddr),
+					&id->daddr, abuf, sizeof(abuf)));
+
+	if (prefix)
+		fprintf(fp, prefix);
+	fprintf(fp, "\t");
+
+	pp = getprotobynumber(id->proto);
+	if (pp)
+		p = pp->p_name;
+	else {
+		sprintf(pbuf, "%d", id->proto);
+		p = pbuf;
+	}
+
+	switch (id->proto) {
+	case IPPROTO_ESP:
+	case IPPROTO_AH:
+	case IPPROTO_COMP:
+		fprintf(fp, "%s ", p);
+		break;
+	default:
+		fprintf(fp, "unspec(%s)", p);
+		break;
+	}
+
+	switch (id->proto) {
+	case IPPROTO_ESP:
+	case IPPROTO_AH:
+	case IPPROTO_COMP:
+	default:
+		spi = ntohl(id->spi);
+		fprintf(fp, "spi %d(0x%08x) ", spi, spi);
+		break;
+	}
+
+	fprintf(fp, "reqid %d ", reqid);
+	fprintf(fp, "%s\n", (mode ? "tunnel" : "transport"));
+}
+
+static const char *strxf_limit(__u64 limit)
+{
+	static char str[32];
+	if (limit == XFRM_INF)
+		strcpy(str, "(INF)");
+	else
+		sprintf(str, "%llu", limit);
+
+	return str;
+}
+
+void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix)
+{
+	if (prefix)
+		fprintf(fp, prefix);
+	fprintf(fp, "stats:\n");
+
+	if (prefix)
+		fprintf(fp, prefix);
+	fprintf(fp, "  ");
+	fprintf(fp, "replay-window %d ", s->replay_window);
+	fprintf(fp, "replay %d ", s->replay);
+	fprintf(fp, "failed %d", s->integrity_failed);
+	fprintf(fp, "\n");
+}
+
+static const char *strxf_time(__u64 time)
+{
+	static char str[32];
+	struct tm *tp;
+	time_t t;
+
+	if (time == 0) {
+		strcpy(str, "(undefined)");
+	} else {
+		/* XXX: treat time in the same manner of xfrm_{user,state}.c */
+		t = (long)time;
+		tp = localtime(&t);
+
+		sprintf(str, "%04d/%02d/%02d %02d:%02d:%02d",
+			tp->tm_year + 1900, tp->tm_mon + 1, tp->tm_mday,
+			tp->tm_hour, tp->tm_min, tp->tm_sec);
+	}
+
+	return str;
+}
+
+void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
+			 struct xfrm_lifetime_cur *cur,
+			 FILE *fp, const char *prefix)
+{
+	if (cfg) {
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "lifetime config:\n");
+
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "  ");
+		fprintf(fp, "limit: ");
+		fprintf(fp, "soft ");
+		fprintf(fp, strxf_limit(cfg->soft_byte_limit));
+		fprintf(fp, "(bytes), hard ");
+		fprintf(fp, strxf_limit(cfg->hard_byte_limit));
+		fprintf(fp, "(bytes)\n");
+
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "  ");
+		fprintf(fp, "limit: ");
+		fprintf(fp, "soft ");
+		fprintf(fp, strxf_limit(cfg->soft_packet_limit));
+		fprintf(fp, "(packets), hard ");
+		fprintf(fp, strxf_limit(cfg->hard_packet_limit));
+		fprintf(fp, "(packets)\n");
+
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "  ");
+		fprintf(fp, "expire add: ");
+		fprintf(fp, "soft ");
+		fprintf(fp, "%llu", cfg->soft_add_expires_seconds);
+		fprintf(fp, "(sec), hard ");
+		fprintf(fp, "%llu", cfg->hard_add_expires_seconds);
+		fprintf(fp, "(sec)\n");
+
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "  ");
+		fprintf(fp, "expire use: ");
+		fprintf(fp, "soft ");
+		fprintf(fp, "%llu", cfg->soft_use_expires_seconds);
+		fprintf(fp, "(sec), hard ");
+		fprintf(fp, "%llu", cfg->hard_use_expires_seconds);
+		fprintf(fp, "(sec)\n");
+	}
+	if (cur) {
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "lifetime current:\n");
+
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "  ");
+		fprintf(fp, "%llu(bytes), ", cur->bytes);
+		fprintf(fp, "%llu(packets)\n", cur->packets);
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "  ");
+		fprintf(fp, "add %s ", strxf_time(cur->add_time));
+		fprintf(fp, "use %s", strxf_time(cur->use_time));
+		fprintf(fp, "\n");
+	}
+}
+
+void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
+			 FILE *fp, const char *prefix)
+{
+	char abuf[256];
+	__u16 f;
+
+	f = sel->family;
+	if (f == AF_UNSPEC)
+		f = family;
+	if (f == AF_UNSPEC)
+		f = preferred_family;
+
+	if (prefix)
+		fprintf(fp, prefix);
+
+	memset(abuf, '\0', sizeof(abuf));
+	fprintf(fp, "%s/%d[%u]", rt_addr_n2a(f, sizeof(sel->saddr),
+					     &sel->saddr,
+					     abuf, sizeof(abuf)),
+		sel->prefixlen_s, sel->sport);
+
+	memset(abuf, '\0', sizeof(abuf));
+	fprintf(fp, " %s/%d[%u]", rt_addr_n2a(f, sizeof(sel->daddr),
+					      &sel->daddr,
+					      abuf, sizeof(abuf)),
+		sel->prefixlen_d, sel->dport);
+
+	fprintf(fp, "\n");
+
+	if (prefix)
+		fprintf(fp, prefix);
+	fprintf(fp, "\t");
+
+	fprintf(fp, "upspec %u ", sel->proto);
+
+	if (sel->ifindex > 0) {
+		char buf[IF_NAMESIZE];
+
+		memset(buf, '\0', sizeof(buf));
+		if_indextoname(sel->ifindex, buf);
+		fprintf(fp, "dev %s ", buf);
+	} else
+		fprintf(fp, "dev (none) ");
+
+	fprintf(fp, "uid %u", sel->user);
+	fprintf(fp, "\n");
+}
+
+static void xfrm_algo_print(struct xfrm_algo *algo, FILE *fp,
+			    const char *prefix)
+{
+	int len;
+	int i;
+
+	if (prefix)
+		fprintf(fp, prefix);
+
+	fprintf(fp, "%s", algo->alg_name);
+
+	len = algo->alg_key_len / 8;
+	for (i = 0; i < len; i ++) {
+		if (i % 4 == 0)
+			fprintf(fp, " ");
+		fprintf(fp, "%x", algo->alg_key[i]);
+	}
+
+	fprintf(fp, "\n");
+}
+
+static const char *strxf_mask(__u32 mask)
+{
+	static char str[128];
+	const int sn = 	sizeof(mask) * 8 - 1;
+	__u32 b;
+	int finish = 0;
+	int broken = 0;
+	int i = 0;
+
+	for (b = (1 << sn); b > 0; b >>= 1) {
+		if ((b & mask) == 0) {
+			if (!finish)
+				finish = 1;
+		} else {
+			if (!finish)
+				i ++;
+			else {
+				broken = 1;
+				break;
+			}
+		}
+	}
+
+	if (!broken)
+		sprintf(str, "%u", i);
+	else
+		sprintf(str, "broken(%u)", mask);
+
+	return str;
+}
+
+static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int ntmpls,
+			    __u16 family, FILE *fp, const char *prefix)
+{
+	char buf[32];
+	const char *p = NULL;
+	int i;
+
+	if (prefix) {
+		strcpy(buf, prefix);
+		strcat(buf, "  ");
+	} else
+		strcpy(buf, "  ");
+	p = buf;
+
+	for (i = 0; i < ntmpls; i++) {
+		struct xfrm_user_tmpl *tmpl = &tmpls[i];
+
+		if (prefix)
+			fprintf(fp, prefix);
+		fprintf(fp, "tmpl-%d:\n", i+1);
+		xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
+				   tmpl->reqid, family, fp, p);
+
+		fprintf(fp, p);
+		fprintf(fp, "\t");
+		fprintf(fp, "level %s ", ((tmpl->optional == 0) ? "required" :
+					  (tmpl->optional == 1) ? "use" :
+					  "unknown-level"));
+		fprintf(fp, "share %s ", strxf_share(tmpl->share));
+		fprintf(fp, "algo-mask:");
+		fprintf(fp, "E=%s, ", strxf_mask(tmpl->ealgos));
+		fprintf(fp, "A=%s, ", strxf_mask(tmpl->aalgos));
+		fprintf(fp, "C=%s", strxf_mask(tmpl->calgos));
+		fprintf(fp, "\n");
+	}
+}
+
+void xfrm_xfrma_print(struct rtattr *tb[], int ntb, __u16 family,
+		      FILE *fp, const char *prefix)
+{
+	int i;
+
+	for (i = 0; i < ntb; i++) {
+		__u16 type = tb[i]->rta_type;
+		void *data = RTA_DATA(tb[i]);
+
+		switch (type) {
+		case XFRMA_ALG_CRYPT:
+			if (prefix)
+				fprintf(fp, prefix);
+			xfrm_algo_print((struct xfrm_algo *)data, fp, "E:");
+			break;
+		case XFRMA_ALG_AUTH:
+			if (prefix)
+				fprintf(fp, prefix);
+			xfrm_algo_print((struct xfrm_algo *)data, fp, "A:");
+			break;
+		case XFRMA_ALG_COMP:
+			if (prefix)
+				fprintf(fp, prefix);
+			xfrm_algo_print((struct xfrm_algo *)data, fp, "C:");
+			break;
+		case XFRMA_ENCAP:
+			if (prefix)
+				fprintf(fp, prefix);
+			/* XXX */
+			fprintf(fp, "encap: (not implemented yet!)\n");
+			break;
+		case XFRMA_TMPL:
+		{
+			int len = tb[i]->rta_len;
+			int ntmpls = len / sizeof(struct xfrm_user_tmpl);
+
+			xfrm_tmpl_print((struct xfrm_user_tmpl *)data,
+					ntmpls, family, fp, prefix);
+			break;
+		}
+		default:
+			if (prefix)
+				fprintf(fp, prefix);
+			fprintf(fp, "unknown rta_type: %u\n", type);
+			break;
+		}
+	}
+}
+
+int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
+		  int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	inet_prefix dst;
+	inet_prefix src;
+	__u8 proto = 0;
+
+	memset(&dst, 0, sizeof(dst));
+	memset(&src, 0, sizeof(src));
+
+	while (1) {
+		if (strcmp(*argv, "src") == 0) {
+			NEXT_ARG();
+
+			get_prefix(&src, *argv, preferred_family);
+			if (src.family == AF_UNSPEC)
+				invarg("\"SADDR\" address family is AF_UNSPEC", *argv);
+			if (family)
+				*family = src.family;
+
+			memcpy(saddr, &src.data, sizeof(*saddr));
+
+			filter.id_src_mask = src.bitlen;
+
+		} else if (strcmp(*argv, "dst") == 0) {
+			NEXT_ARG();
+
+			get_prefix(&dst, *argv, preferred_family);
+			if (dst.family == AF_UNSPEC)
+				invarg("\"DADDR\" address family is AF_UNSPEC", *argv);
+			if (family)
+				*family = dst.family;
+
+			memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
+
+			filter.id_dst_mask = dst.bitlen;
+
+		} else if (strcmp(*argv, "proto") == 0) {
+			struct protoent *pp;
+
+			NEXT_ARG();
+
+			pp = getprotobyname(*argv);
+			if (pp)
+				proto = pp->p_proto;
+			else {
+				if (get_u8(&proto, *argv, 0))
+					invarg("\"PROTO\" is invalid", *argv);
+			}
+
+			switch (proto) {
+			case IPPROTO_ESP:
+			case IPPROTO_AH:
+			case IPPROTO_COMP:
+				id->proto = proto;
+				break;
+			default:
+				invarg("\"PROTO\" is unsuppored proto", *argv);
+			}
+
+			filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "spi") == 0) {
+			__u32 spi;
+
+			NEXT_ARG();
+			if (get_u32(&spi, *argv, 0))
+				invarg("\"SPI\" is invalid", *argv);
+
+			spi = htonl(spi);
+			id->spi = spi;
+
+			filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
+
+		} else {
+			PREV_ARG(); /* back track */
+			break;
+		}
+
+		if (!NEXT_ARG_OK())
+			break;
+		NEXT_ARG();
+	}
+
+	if (src.family && dst.family && (src.family != dst.family))
+		invarg("the same address family is required between \"SADDR\" and \"DADDR\"", *argv);
+	if (proto == 0)
+		missarg("PROTO");
+
+	if (argc == *argcp)
+		missarg("ID");
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+
+	if (matches(*argv, "transport") == 0)
+		*mode = 0;
+	else if (matches(*argv, "tunnel") == 0)
+		*mode = 1;
+	else
+		invarg("\"MODE\" is invalid", *argv);
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+/* NOTE: reqid is used by host-byte order */
+int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+
+	if (get_u32(reqid, *argv, 0))
+		invarg("\"REQID\" is invalid", *argv);
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
+				      int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	__u8 upspec;
+
+	while (1) {
+		if (strcmp(*argv, "proto") == 0) {
+			NEXT_ARG();
+
+			if (strcmp(*argv, "any") == 0)
+				upspec = 0;
+			else {
+				struct protoent *pp;
+				pp = getprotobyname(*argv);
+				if (pp)
+					upspec = pp->p_proto;
+				else {
+					if (get_u8(&upspec, *argv, 0))
+						invarg("\"UPSPEC\" is invalid", *argv);
+				}
+			}
+			sel->proto = upspec;
+
+			filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "sport") == 0) {
+			NEXT_ARG();
+
+			if (get_u16(&sel->sport, *argv, 0))
+				invarg("\"PORT\" is invalid", *argv);
+			sel->sport = htons(sel->sport);
+			if (sel->sport)
+				sel->sport_mask = ~((__u16)0);
+
+			filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "dport") == 0) {
+			NEXT_ARG();
+
+			if (get_u16(&sel->dport, *argv, 0))
+				invarg("\"PORT\" is invalid", *argv);
+			sel->dport = htons(sel->dport);
+			if (sel->dport)
+				sel->dport_mask = ~((__u16)0);
+
+			filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
+
+		} else {
+			PREV_ARG(); /* back track */
+			break;
+		}
+
+		if (!NEXT_ARG_OK())
+			break;
+		NEXT_ARG();
+	}
+	if (argc == *argcp)
+		missarg("UPSPEC");
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	inet_prefix dst;
+	inet_prefix src;
+
+	memset(&dst, 0, sizeof(dst));
+	memset(&src, 0, sizeof(src));
+
+	while (1) {
+		if (strcmp(*argv, "src") == 0) {
+			NEXT_ARG();
+
+			get_prefix(&src, *argv, preferred_family);
+			if (src.family == AF_UNSPEC)
+				invarg("\"SADDR\" address family is AF_UNSPEC", *argv);
+			sel->family = src.family;
+
+			memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
+			sel->prefixlen_s = src.bitlen;
+
+			filter.sel_src_mask = src.bitlen;
+
+		} else if (strcmp(*argv, "dst") == 0) {
+			NEXT_ARG();
+
+			get_prefix(&dst, *argv, preferred_family);
+			if (dst.family == AF_UNSPEC)
+				invarg("\"DADDR\" address family is AF_UNSPEC", *argv);
+			sel->family = dst.family;
+
+			memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
+			sel->prefixlen_d = dst.bitlen;
+
+			filter.sel_dst_mask = dst.bitlen;
+
+		} else if (strcmp(*argv, "upspec") == 0) {
+			NEXT_ARG();
+
+			xfrm_selector_upspec_parse(sel, &argc, &argv);
+
+		} else if (strcmp(*argv, "dev") == 0) {
+			int ifindex;
+
+			NEXT_ARG();
+
+			if (strcmp(*argv, "none") == 0)
+				ifindex = 0;
+			else {
+				ifindex = if_nametoindex(*argv);
+				if (ifindex <= 0)
+					invarg("\"DEV\" is invalid", *argv);
+			}
+			sel->ifindex = ifindex;
+
+			filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
+
+		} else {
+			PREV_ARG(); /* back track */
+			break;
+		}
+
+		if (!NEXT_ARG_OK())
+			break;
+
+		NEXT_ARG();
+	}
+
+	if (src.family && dst.family && (src.family != dst.family))
+		invarg("the same address family is required between \"SADDR\" and \"DADDR\"", *argv);
+
+	if (argc == *argcp)
+		missarg("SELECTOR");
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
+			    int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	int ret;
+
+	if (strcmp(*argv, "time-soft") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
+		if (ret)
+			invarg("\"time-soft\" value is invalid", *argv);
+	} else if (strcmp(*argv, "time-hard") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
+		if (ret)
+			invarg("\"time-hard\" value is invalid", *argv);
+	} else if (strcmp(*argv, "time-use-soft") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
+		if (ret)
+			invarg("\"time-use-soft\" value is invalid", *argv);
+	} else if (strcmp(*argv, "time-use-hard") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
+		if (ret)
+			invarg("\"time-use-hard\" value is invalid", *argv);
+	} else if (strcmp(*argv, "byte-soft") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->soft_byte_limit, *argv, 0);
+		if (ret)
+			invarg("\"byte-soft\" value is invalid", *argv);
+	} else if (strcmp(*argv, "byte-hard") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->hard_byte_limit, *argv, 0);
+		if (ret)
+			invarg("\"byte-hard\" value is invalid", *argv);
+	} else if (strcmp(*argv, "packet-soft") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->soft_packet_limit, *argv, 0);
+		if (ret)
+			invarg("\"packet-soft\" value is invalid", *argv);
+	} else if (strcmp(*argv, "packet-hard") == 0) {
+		NEXT_ARG();
+		ret = get_u64(&lft->hard_packet_limit, *argv, 0);
+		if (ret)
+			invarg("\"packet-hard\" value is invalid", *argv);
+	} else
+		invarg("\"LIMIT\" is invalid", *argv);
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+int do_xfrm(int argc, char **argv)
+{
+	memset(&filter, 0, sizeof(filter));
+
+	if (argc < 1)
+		usage();
+
+	if (strcmp(*argv, "state") == 0 ||
+	    strcmp(*argv, "sa") == 0) {
+		return do_xfrm_state(argc-1, argv+1);
+	} else if (strcmp(*argv, "policy") == 0 ||
+		   strcmp(*argv, "pol") == 0) {
+		return do_xfrm_policy(argc-1, argv+1);
+	} else if (strcmp(*argv, "help") == 0) {
+		usage();
+		fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
+		exit(-1);
+	}
+	usage();
+}
diff --git a/ip/xfrm.h b/ip/xfrm.h
index e69de29b..1d8023ba 100644
--- a/ip/xfrm.h
+++ b/ip/xfrm.h
@@ -0,0 +1,102 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/*
+ * Authors:
+ *	Masahide NAKAMURA @USAGI
+ */
+
+#ifndef __XFRM_H__
+#define __XFRM_H__ 1
+
+#include <stdio.h>
+#include <sys/socket.h>
+#include <linux/xfrm.h>
+#include "utils.h"
+
+#define XFRM_MAX_DEPTH 6
+
+#define XFRMS_RTA(x)  ((struct rtattr*)(((char*)(x)) + NLMSG_ALIGN(sizeof(struct xfrm_usersa_info))))
+#define XFRMS_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct xfrm_usersa_info))
+
+#define XFRMP_RTA(x)  ((struct rtattr*)(((char*)(x)) + NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_info))))
+#define XFRMP_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct xfrm_userpoilcy_info))
+
+struct xfrm_buffer {
+	char *buf;
+	int size;
+	int offset;
+
+	int nlmsg_count;
+	struct rtnl_handle *rth;
+};
+
+struct xfrm_filter {
+	int use;
+
+	struct xfrm_usersa_info xsinfo;
+	__u32 id_src_mask;
+	__u32 id_dst_mask;
+	__u32 id_proto_mask;
+	__u32 id_spi_mask;
+	__u32 mode_mask;
+	__u32 reqid_mask;
+	__u32 state_flags_mask;
+
+	struct xfrm_userpolicy_info xpinfo;
+	__u32 dir_mask;
+	__u32 sel_src_mask;
+	__u32 sel_dst_mask;
+	__u32 sel_dev_mask;
+	__u32 upspec_proto_mask;
+	__u32 upspec_sport_mask;
+	__u32 upspec_dport_mask;
+	__u32 index_mask;
+	__u32 action_mask;
+	__u32 priority_mask;
+};
+#define XFRM_FILTER_MASK_FULL (~(__u32)0)
+
+extern struct xfrm_filter filter;
+
+int do_xfrm_state(int argc, char **argv);
+int do_xfrm_policy(int argc, char **argv);
+
+const char *strxf_flags(__u8 flags);
+const char *strxf_share(__u8 share);
+void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
+			__u8 mode, __u32 reqid, __u16 family, FILE *fp,
+			const char *prefix);
+void xfrm_stats_print(struct xfrm_stats *s, FILE *fp, const char *prefix);
+void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
+			 struct xfrm_lifetime_cur *cur,
+			 FILE *fp, const char *prefix);
+void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
+			 FILE *fp, const char *prefix);
+void xfrm_xfrma_print(struct rtattr *tb[], int ntb, __u16 family,
+		      FILE *fp, const char *prefix);
+int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
+		    int *argcp, char ***argvp);
+int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp);
+int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp);
+int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp);
+int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
+			    int *argcp, char ***argvp);
+
+#endif
diff --git a/ip/xfrm_policy.c b/ip/xfrm_policy.c
index e69de29b..4449d10f 100644
--- a/ip/xfrm_policy.c
+++ b/ip/xfrm_policy.c
@@ -0,0 +1,671 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/*
+ * based on iproute.c
+ */
+/*
+ * Authors:
+ *	Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netdb.h>
+#include <linux/netlink.h>
+#include <linux/xfrm.h>
+#include "utils.h"
+#include "xfrm.h"
+#include "ip_common.h"
+
+//#define NLMSG_FLUSH_BUF_SIZE (4096-512)
+#define NLMSG_FLUSH_BUF_SIZE 8192
+
+/*
+ * Receiving buffer defines:
+ * nlmsg
+ *   data = struct xfrm_userpolicy_info
+ *   rtattr
+ *     data = struct xfrm_user_tmpl[]
+ */
+#define NLMSG_BUF_SIZE 4096
+#define RTA_BUF_SIZE 2048
+#define XFRM_TMPLS_BUF_SIZE 1024
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: ip xfrm policy { add | update } dir DIR sel SELECTOR [ index INDEX ] \n");
+	fprintf(stderr, "        [ action ACTION ] [ priority PRIORITY ] [ LIMIT-LIST ] [ TMPL-LIST ]\n");
+	fprintf(stderr, "        [ sel SELECTOR | index INDEX ] [ TMPL-LIST ]\n");
+	fprintf(stderr, "Usage: ip xfrm policy { delete | get } dir DIR [ sel SELECTOR | index INDEX ]\n");
+	fprintf(stderr, "Usage: ip xfrm policy { flush | list } [ dir DIR ] [ sel SELECTOR ]\n");
+	fprintf(stderr, "        [ index INDEX ] [ action ACTION ] [ priority PRIORITY ]\n");
+	fprintf(stderr, "DIR := [ in | out | fwd ]\n");
+
+	fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ upspec UPSPEC ] [ dev DEV ]\n");
+
+	fprintf(stderr, "UPSPEC := proto PROTO [ sport PORT ] [ dport PORT ]\n");
+
+	//fprintf(stderr, "DEV - device name(default=none)\n");
+
+	fprintf(stderr, "ACTION := [ allow | block ](default=allow)\n");
+
+	//fprintf(stderr, "PRIORITY - priority value(default=0)\n");
+
+	fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
+	fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
+	fprintf(stderr, "         [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] NUMBER ]\n");
+
+	fprintf(stderr, "TMPL-LIST := [ TMPL-LIST ] | [ tmpl TMPL ] | [ tmpl remain ](change only)\n");
+	fprintf(stderr, "TMPL := ID [ mode MODE ] [ reqid REQID ] [ level LEVEL ]\n");
+	fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ]\n");
+
+	fprintf(stderr, "XFRM_PROTO := [ esp | ah | ipcomp ]\n");
+
+ 	fprintf(stderr, "MODE := [ transport | tunnel ](default=transport)\n");
+ 	//fprintf(stderr, "REQID - number(default=0)\n");
+	fprintf(stderr, "LEVEL := [ required | use ](default=required)\n");
+
+	exit(-1);
+}
+
+static int xfrm_policy_dir_parse(__u8 *dir, int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+
+	if (strcmp(*argv, "in") == 0)
+		*dir = XFRM_POLICY_IN;
+	else if (strcmp(*argv, "out") == 0)
+		*dir = XFRM_POLICY_OUT;
+	else if (strcmp(*argv, "fwd") == 0)
+		*dir = XFRM_POLICY_FWD;
+	else
+		invarg("\"DIR\" is invalid", *argv);
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+static int xfrm_tmpl_parse(struct xfrm_user_tmpl *tmpl,
+			   int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+	char *idp = NULL;
+
+	while (1) {
+		if (strcmp(*argv, "mode") == 0) {
+			NEXT_ARG();
+			xfrm_mode_parse(&tmpl->mode,  &argc, &argv);
+		} else if (strcmp(*argv, "reqid") == 0) {
+			NEXT_ARG();
+			xfrm_reqid_parse(&tmpl->reqid, &argc, &argv);
+		} else if (strcmp(*argv, "level") == 0) {
+			NEXT_ARG();
+
+			if (strcmp(*argv, "required") == 0)
+				tmpl->optional = 0;
+			else if (strcmp(*argv, "use") == 0)
+				tmpl->optional = 1;
+			else
+				invarg("\"level\" value is invalid\n", *argv);
+
+		} else {
+			if (idp) {
+				PREV_ARG(); /* back track */
+				break;
+			}
+			idp = *argv;
+			xfrm_id_parse(&tmpl->saddr, &tmpl->id, &tmpl->family,
+				      &argc, &argv);
+			if (preferred_family == AF_UNSPEC)
+				preferred_family = tmpl->family;
+		}
+
+		if (!NEXT_ARG_OK())
+			break;
+
+		NEXT_ARG();
+	}
+	if (argc == *argcp)
+		missarg("TMPL");
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+static int xfrm_policy_modify(int cmd, unsigned flags, int argc, char **argv)
+{
+	struct rtnl_handle rth;
+	struct {
+		struct nlmsghdr			n;
+		struct xfrm_userpolicy_info	xpinfo;
+		char				buf[RTA_BUF_SIZE];
+	} req;
+	char *dirp = NULL;
+	char tmpls_buf[XFRM_TMPLS_BUF_SIZE];
+	int tmpls_len = 0;
+
+	memset(&req, 0, sizeof(req));
+	memset(&tmpls_buf, 0, sizeof(tmpls_buf));
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpinfo));
+	req.n.nlmsg_flags = NLM_F_REQUEST|flags;
+	req.n.nlmsg_type = cmd;
+	req.xpinfo.sel.family = preferred_family;
+
+	req.xpinfo.lft.soft_byte_limit = XFRM_INF;
+	req.xpinfo.lft.hard_byte_limit = XFRM_INF;
+	req.xpinfo.lft.soft_packet_limit = XFRM_INF;
+	req.xpinfo.lft.hard_packet_limit = XFRM_INF;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "dir") == 0) {
+			if (dirp)
+				duparg("dir", *argv);
+			dirp = *argv;
+
+			NEXT_ARG();
+			xfrm_policy_dir_parse(&req.xpinfo.dir, &argc, &argv);
+
+			filter.dir_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "sel") == 0) {
+			NEXT_ARG();
+			xfrm_selector_parse(&req.xpinfo.sel, &argc, &argv);
+			if (preferred_family == AF_UNSPEC)
+				preferred_family = req.xpinfo.sel.family;
+
+		} else if (strcmp(*argv, "index") == 0) {
+			NEXT_ARG();
+			if (get_u32(&req.xpinfo.index, *argv, 0))
+				invarg("\"INDEX\" is invalid", *argv);
+
+			filter.index_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "action") == 0) {
+			NEXT_ARG();
+			if (strcmp(*argv, "allow") == 0)
+				req.xpinfo.action = XFRM_POLICY_ALLOW;
+			else if (strcmp(*argv, "block") == 0)
+				req.xpinfo.action = XFRM_POLICY_BLOCK;
+			else
+				invarg("\"action\" value is invalid\n", *argv);
+
+			filter.action_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "priority") == 0) {
+			NEXT_ARG();
+			if (get_u32(&req.xpinfo.priority, *argv, 0))
+				invarg("\"PRIORITY\" is invalid", *argv);
+
+			filter.priority_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "limit") == 0) {
+			NEXT_ARG();
+			xfrm_lifetime_cfg_parse(&req.xpinfo.lft, &argc, &argv);
+		} else if (strcmp(*argv, "tmpl") == 0) {
+			struct xfrm_user_tmpl *tmpl;
+
+			if (tmpls_len + sizeof(*tmpl) > sizeof(tmpls_buf)) {
+				fprintf(stderr, "Too many tmpls: buffer overflow\n");
+				exit(1);
+			}
+			tmpl = (struct xfrm_user_tmpl *)((char *)tmpls_buf + tmpls_len);
+
+			tmpl->family = preferred_family;
+			tmpl->aalgos = (~(__u32)0);
+			tmpl->ealgos = (~(__u32)0);
+			tmpl->calgos = (~(__u32)0);
+
+			NEXT_ARG();
+			xfrm_tmpl_parse(tmpl, &argc, &argv);
+
+			tmpls_len += sizeof(*tmpl);
+		} else
+			invarg("unknown", *argv);
+
+		argc--; argv++;
+	}
+
+	if (!dirp) {
+		fprintf(stderr, "Not enough information: \"DIR\" is required.\n");
+		exit(1);
+	}
+
+	if (tmpls_len > 0) {
+		addattr_l(&req.n, sizeof(req), XFRMA_TMPL,
+			  (void *)tmpls_buf, tmpls_len);
+	}
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+		exit(1);
+
+	if (req.xpinfo.sel.family == AF_UNSPEC)
+		req.xpinfo.sel.family = AF_INET;
+
+	if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+		exit(2);
+
+	rtnl_close(&rth);
+
+	return 0;
+}
+
+static int xfrm_policy_filter_match(struct xfrm_userpolicy_info *xpinfo)
+{
+	if (!filter.use)
+		return 1;
+
+	if ((xpinfo->dir^filter.xpinfo.dir)&filter.dir_mask)
+		return 0;
+
+	if (filter.sel_src_mask) {
+		if (memcmp(&xpinfo->sel.saddr, &filter.xpinfo.sel.saddr,
+			   filter.sel_src_mask) != 0)
+			return 0;
+		if (xpinfo->sel.prefixlen_s != filter.xpinfo.sel.prefixlen_s)
+			return 0;
+	}
+
+	if (filter.sel_dst_mask) {
+		if (memcmp(&xpinfo->sel.daddr, &filter.xpinfo.sel.daddr,
+			   filter.sel_dst_mask) != 0)
+			return 0;
+		if (xpinfo->sel.prefixlen_d != filter.xpinfo.sel.prefixlen_d)
+			return 0;
+	}
+
+	if ((xpinfo->sel.ifindex^filter.xpinfo.sel.ifindex)&filter.sel_dev_mask)
+		return 0;
+
+	if ((xpinfo->sel.proto^filter.xpinfo.sel.proto)&filter.upspec_proto_mask)
+		return 0;
+
+	if (filter.upspec_sport_mask) {
+		if ((xpinfo->sel.sport^filter.xpinfo.sel.sport)&filter.upspec_sport_mask)
+			return 0;
+	}
+
+	if (filter.upspec_dport_mask) {
+		if ((xpinfo->sel.dport^filter.xpinfo.sel.dport)&filter.upspec_dport_mask)
+			return 0;
+	}
+
+	if ((xpinfo->index^filter.xpinfo.index)&filter.index_mask)
+		return 0;
+
+	if ((xpinfo->action^filter.xpinfo.action)&filter.action_mask)
+		return 0;
+
+	if ((xpinfo->priority^filter.xpinfo.priority)&filter.priority_mask)
+		return 0;
+
+	return 1;
+}
+
+int xfrm_policy_print(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+	FILE *fp = (FILE*)arg;
+	struct xfrm_userpolicy_info *xpinfo = NLMSG_DATA(n);
+	int len = n->nlmsg_len;
+	struct rtattr * tb[XFRM_MAX_DEPTH];
+	int ntb;
+
+	if (n->nlmsg_type != XFRM_MSG_NEWPOLICY &&
+	    n->nlmsg_type != XFRM_MSG_DELPOLICY) {
+		fprintf(stderr, "Not a policy: %08x %08x %08x\n",
+			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+		return 0;
+	}
+
+	len -= NLMSG_LENGTH(sizeof(*xpinfo));
+	if (len < 0) {
+		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+		return -1;
+	}
+
+	if (!xfrm_policy_filter_match(xpinfo))
+		return 0;
+
+	memset(tb, 0, sizeof(tb));
+	ntb = parse_rtattr_byindex(tb, XFRM_MAX_DEPTH, XFRMP_RTA(xpinfo), len);
+
+	if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
+		fprintf(fp, "Deleted ");
+
+	xfrm_selector_print(&xpinfo->sel, preferred_family, fp, NULL);
+
+	fprintf(fp, "\t");
+	fprintf(fp, "%s ", (xpinfo->dir == XFRM_POLICY_IN ? "in " :
+			    xpinfo->dir == XFRM_POLICY_OUT ? "out" :
+			    xpinfo->dir == XFRM_POLICY_FWD ? "fwd" :
+			    "unknown-dir"));
+	fprintf(fp, "%s ", (xpinfo->action == XFRM_POLICY_ALLOW ? "allow" :
+			   xpinfo->action == XFRM_POLICY_BLOCK ? "block" :
+			   "unknown-action"));
+	fprintf(fp, "index %u ", xpinfo->index);
+	fprintf(fp, "priority %u ", xpinfo->priority);
+	fprintf(fp, "share %s ", strxf_share(xpinfo->share));
+	fprintf(fp, "flags 0x%s", strxf_flags(xpinfo->flags));
+	fprintf(fp, "\n");
+
+	if (show_stats > 0)
+		xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, "\t");
+
+	xfrm_xfrma_print(tb, ntb, xpinfo->sel.family, fp, "\t");
+
+	return 0;
+}
+
+static int xfrm_policy_get_or_delete(int argc, char **argv, int delete,
+				     void *res_nlbuf)
+{
+	struct rtnl_handle rth;
+	struct {
+		struct nlmsghdr			n;
+		struct xfrm_userpolicy_id	xpid;
+	} req;
+	char *dirp = NULL;
+	char *selp = NULL;
+	char *indexp = NULL;
+
+	memset(&req, 0, sizeof(req));
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpid));
+	req.n.nlmsg_flags = NLM_F_REQUEST;
+	req.n.nlmsg_type = delete ? XFRM_MSG_DELPOLICY : XFRM_MSG_GETPOLICY;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "dir") == 0) {
+			if (dirp)
+				duparg("dir", *argv);
+			dirp = *argv;
+
+			NEXT_ARG();
+			xfrm_policy_dir_parse(&req.xpid.dir, &argc, &argv);
+
+		} else if (strcmp(*argv, "sel") == 0) {
+			if (selp)
+				duparg("sel", *argv);
+			selp = *argv;
+
+			NEXT_ARG();
+			xfrm_selector_parse(&req.xpid.sel, &argc, &argv);
+			if (preferred_family == AF_UNSPEC)
+				preferred_family = req.xpid.sel.family;
+
+		} else if (strcmp(*argv, "index") == 0) {
+			if (indexp)
+				duparg("index", *argv);
+			indexp = *argv;
+
+			NEXT_ARG();
+			if (get_u32(&req.xpid.index, *argv, 0))
+				invarg("\"INDEX\" is invalid", *argv);
+
+		} else
+			invarg("unknown", *argv);
+
+		argc--; argv++;
+	}
+
+	if (!dirp) {
+		fprintf(stderr, "Not enough information: \"DIR\" is required.\n");
+		exit(1);
+	}
+	if (!selp && !indexp) {
+		fprintf(stderr, "Not enough information: either \"SELECTOR\" or \"INDEX\" is required.\n");
+		exit(1);
+	}
+	if (selp && indexp)
+		duparg2("SELECTOR", "INDEX");
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+		exit(1);
+
+	if (req.xpid.sel.family == AF_UNSPEC)
+		req.xpid.sel.family = AF_INET;
+
+	if (rtnl_talk(&rth, &req.n, 0, 0, res_nlbuf, NULL, NULL) < 0)
+		exit(2);
+
+	rtnl_close(&rth);
+
+	return 0;
+}
+
+static int xfrm_policy_delete(int argc, char **argv)
+{
+	return xfrm_policy_get_or_delete(argc, argv, 1, NULL);
+}
+
+static int xfrm_policy_get(int argc, char **argv)
+{
+	char buf[NLMSG_BUF_SIZE];
+	struct nlmsghdr *n = (struct nlmsghdr *)buf;
+
+	memset(buf, 0, sizeof(buf));
+
+	xfrm_policy_get_or_delete(argc, argv, 0, n);
+
+	if (xfrm_policy_print(NULL, n, (void*)stdout) < 0) {
+		fprintf(stderr, "An error :-)\n");
+		exit(1);
+	}
+
+	return 0;
+}
+
+/*
+ * With an existing policy of nlmsg, make new nlmsg for deleting the policy
+ * and store it to buffer.
+ */
+int xfrm_policy_keep(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+	struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
+	struct rtnl_handle *rth = xb->rth;
+	struct xfrm_userpolicy_info *xpinfo = NLMSG_DATA(n);
+	int len = n->nlmsg_len;
+	struct nlmsghdr *new_n;
+	struct xfrm_userpolicy_id *xpid;
+
+	if (n->nlmsg_type != XFRM_MSG_NEWPOLICY) {
+		fprintf(stderr, "Not a policy: %08x %08x %08x\n",
+			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+		return 0;
+	}
+
+	len -= NLMSG_LENGTH(sizeof(*xpinfo));
+	if (len < 0) {
+		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+		return -1;
+	}
+
+	if (!xfrm_policy_filter_match(xpinfo))
+		return 0;
+
+	if (xb->offset > xb->size) {
+		fprintf(stderr, "Flush buffer overflow\n");
+		return -1;
+	}
+
+	new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
+	new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xpid));
+	new_n->nlmsg_flags = NLM_F_REQUEST;
+	new_n->nlmsg_type = XFRM_MSG_DELPOLICY;
+	new_n->nlmsg_seq = ++rth->seq;
+
+	xpid = NLMSG_DATA(new_n);
+	memcpy(&xpid->sel, &xpinfo->sel, sizeof(xpid->sel));
+	xpid->dir = xpinfo->dir;
+	xpid->index = xpinfo->index;
+
+	xb->offset += new_n->nlmsg_len;
+	xb->nlmsg_count ++;
+
+	return 0;
+}
+
+static int xfrm_policy_list_or_flush(int argc, char **argv, int flush)
+{
+	struct rtnl_handle rth;
+
+	if (argc > 0)
+		filter.use = 1;
+	filter.xpinfo.sel.family = preferred_family;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "dir") == 0) {
+			NEXT_ARG();
+			xfrm_policy_dir_parse(&filter.xpinfo.dir, &argc, &argv);
+
+			filter.dir_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "sel") == 0) {
+			NEXT_ARG();
+			xfrm_selector_parse(&filter.xpinfo.sel, &argc, &argv);
+			if (preferred_family == AF_UNSPEC)
+				preferred_family = filter.xpinfo.sel.family;
+
+		} else if (strcmp(*argv, "index") == 0) {
+			NEXT_ARG();
+			if (get_u32(&filter.xpinfo.index, *argv, 0))
+				invarg("\"INDEX\" is invalid", *argv);
+
+			filter.index_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "action") == 0) {
+			NEXT_ARG();
+			if (strcmp(*argv, "allow") == 0)
+				filter.xpinfo.action = XFRM_POLICY_ALLOW;
+			else if (strcmp(*argv, "block") == 0)
+				filter.xpinfo.action = XFRM_POLICY_BLOCK;
+			else
+				invarg("\"action\" value is invalid\n", *argv);
+
+			filter.action_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "priority") == 0) {
+			NEXT_ARG();
+			if (get_u32(&filter.xpinfo.priority, *argv, 0))
+				invarg("\"PRIORITY\" is invalid", *argv);
+
+			filter.priority_mask = XFRM_FILTER_MASK_FULL;
+
+		} else
+			invarg("unknown", *argv);
+
+		argc--; argv++;
+	}
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+		exit(1);
+
+	if (flush) {
+		struct xfrm_buffer xb;
+		char buf[NLMSG_FLUSH_BUF_SIZE];
+		int i;
+
+		xb.buf = buf;
+		xb.size = sizeof(buf);
+		xb.rth = &rth;
+
+		for (i = 0; ; i++) {
+			xb.offset = 0;
+			xb.nlmsg_count = 0;
+
+			if (show_stats > 1)
+				fprintf(stderr, "Flush round = %d\n", i);
+
+			if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
+				perror("Cannot send dump request");
+				exit(1);
+			}
+
+			if (rtnl_dump_filter(&rth, xfrm_policy_keep, &xb, NULL, NULL) < 0) {
+				fprintf(stderr, "Flush terminated\n");
+				exit(1);
+			}
+			if (xb.nlmsg_count == 0) {
+				if (show_stats > 1)
+					fprintf(stderr, "Flush completed\n");
+				break;
+			}
+
+			if (rtnl_send(&rth, xb.buf, xb.offset) < 0) {
+				perror("Failed to send flush request\n");
+				exit(1);
+			}
+			if (show_stats > 1)
+				fprintf(stderr, "Flushed nlmsg count = %d\n", xb.nlmsg_count);
+
+			xb.offset = 0;
+			xb.nlmsg_count = 0;
+		}
+	} else {
+		if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
+			perror("Cannot send dump request");
+			exit(1);
+		}
+
+		if (rtnl_dump_filter(&rth, xfrm_policy_print, stdout, NULL, NULL) < 0) {
+			fprintf(stderr, "Dump terminated\n");
+			exit(1);
+		}
+	}
+
+	rtnl_close(&rth);
+
+	exit(0);
+}
+
+int do_xfrm_policy(int argc, char **argv)
+{
+	if (argc < 1)
+		return xfrm_policy_list_or_flush(0, NULL, 0);
+
+	if (matches(*argv, "add") == 0)
+		return xfrm_policy_modify(XFRM_MSG_NEWPOLICY, 0,
+					  argc-1, argv+1);
+	if (matches(*argv, "update") == 0)
+		return xfrm_policy_modify(XFRM_MSG_UPDPOLICY, 0,
+					  argc-1, argv+1);
+	if (matches(*argv, "delete") == 0 || matches(*argv, "del") == 0)
+		return xfrm_policy_delete(argc-1, argv+1);
+	if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
+	    || matches(*argv, "lst") == 0)
+		return xfrm_policy_list_or_flush(argc-1, argv+1, 0);
+	if (matches(*argv, "get") == 0)
+		return xfrm_policy_get(argc-1, argv+1);
+	if (matches(*argv, "flush") == 0)
+		return xfrm_policy_list_or_flush(argc-1, argv+1, 1);
+	if (matches(*argv, "help") == 0)
+		usage();
+	fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm policy help\".\n", *argv);
+	exit(-1);
+}
diff --git a/ip/xfrm_state.c b/ip/xfrm_state.c
index e69de29b..9ea6257c 100644
--- a/ip/xfrm_state.c
+++ b/ip/xfrm_state.c
@@ -0,0 +1,636 @@
+/* $USAGI: $ */
+
+/*
+ * Copyright (C)2004 USAGI/WIDE Project
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/*
+ * based on iproute.c
+ */
+/*
+ * Authors:
+ *	Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netdb.h>
+#include <linux/xfrm.h>
+#include "utils.h"
+#include "xfrm.h"
+#include "ip_common.h"
+
+//#define NLMSG_FLUSH_BUF_SIZE (4096-512)
+#define NLMSG_FLUSH_BUF_SIZE 8192
+
+/*
+ * Receiving buffer defines:
+ * nlmsg
+ *   data = struct xfrm_usersa_info
+ *   rtattr
+ *   rtattr
+ *   ... (max count of rtattr is XFRM_MAX_DEPTH)
+ *
+ *  each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t
+ */
+#define NLMSG_BUF_SIZE 4096
+#define RTA_BUF_SIZE 2048
+#define XFRM_ALGO_KEY_BUF_SIZE 512
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n");
+	fprintf(stderr, "        [ reqid REQID ] [ FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ]\n");
+
+	fprintf(stderr, "Usage: ip xfrm state { delete | get } ID\n");
+	fprintf(stderr, "Usage: ip xfrm state { flush | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
+	fprintf(stderr, "        [ FLAG_LIST ]\n");
+
+	fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ]\n");
+	fprintf(stderr, "XFRM_PROTO := [ esp | ah | ipcomp ]\n");
+	//fprintf(stderr, "SPI - security parameter index(default=0)\n");
+
+ 	fprintf(stderr, "MODE := [ transport | tunnel ](default=transport)\n");
+ 	//fprintf(stderr, "REQID - number(default=0)\n");
+
+	fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] [ flag FLAG ]\n");
+	fprintf(stderr, "FLAG := [ noecn ]\n");
+
+	fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] | [ algo ALGO ]\n");
+	fprintf(stderr, "ALGO := ALGO_TYPE ALGO_NAME ALGO_KEY\n");
+	fprintf(stderr, "ALGO_TYPE := [ E | A | C ]\n");
+	//fprintf(stderr, "ALGO_NAME - algorithm name\n");
+	//fprintf(stderr, "ALGO_KEY - algorithm key\n");
+
+	fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ upspec UPSPEC ] [ dev DEV ]\n");
+
+	fprintf(stderr, "UPSPEC := proto PROTO [ sport PORT ] [ dport PORT ]\n");
+
+	//fprintf(stderr, "DEV - device name(default=none)\n");
+	fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
+	fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
+	fprintf(stderr, "         [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] COUNT ]\n");
+	exit(-1);
+}
+
+static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
+			   char *name, char *key, int max)
+{
+	int len;
+
+#if 1
+	/* XXX: verifying both name and key is required! */
+	fprintf(stderr, "warning: ALGONAME/ALGOKEY will send to kernel promiscuously!(verifying them isn't implemented yet)\n");
+#endif
+
+	strncpy(alg->alg_name, name, sizeof(alg->alg_name));
+
+	if (strncmp(key, "0x", 2) == 0) {
+		/*
+		 * XXX: fix me!!
+		 */
+		__u64 val = 0;
+		char *p = (char *)&val;
+
+		if (get_u64(&val, key, 16))
+			invarg("\"ALGOKEY\" is invalid", key);
+
+		len = (strlen(key) - 2) / 2;
+		if (len > sizeof(val))
+			invarg("\"ALGOKEY\" is invalid: too large", key);
+
+		if (len > 0) {
+			int index = sizeof(val) - len;
+			if (len > max)
+				invarg("\"ALGOKEY\" makes buffer overflow\n", key);
+
+			memcpy(alg->alg_key, &p[index], len);
+		}
+
+	} else {
+		len = strlen(key);
+		if (len > 0) {
+			if (len > max)
+				invarg("\"ALGOKEY\" makes buffer overflow\n", key);
+
+			strncpy(alg->alg_key, key, len);
+		}
+	}
+
+	alg->alg_key_len = len * 8;
+
+	return 0;
+}
+
+static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
+{
+	int argc = *argcp;
+	char **argv = *argvp;
+
+	if (strcmp(*argv, "noecn") == 0)
+		*flags |= XFRM_STATE_NOECN;
+	else
+		invarg("\"FLAG\" is invalid", *argv);
+
+	filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
+
+	*argcp = argc;
+	*argvp = argv;
+
+	return 0;
+}
+
+static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv)
+{
+	struct rtnl_handle rth;
+	struct {
+		struct nlmsghdr 	n;
+		struct xfrm_usersa_info xsinfo;
+		char   			buf[RTA_BUF_SIZE];
+	} req;
+	char *idp = NULL;
+	char *ealgop = NULL;
+	char *aalgop = NULL;
+	char *calgop = NULL;
+
+	memset(&req, 0, sizeof(req));
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo));
+	req.n.nlmsg_flags = NLM_F_REQUEST|flags;
+	req.n.nlmsg_type = cmd;
+	req.xsinfo.family = preferred_family;
+
+	req.xsinfo.lft.soft_byte_limit = XFRM_INF;
+	req.xsinfo.lft.hard_byte_limit = XFRM_INF;
+	req.xsinfo.lft.soft_packet_limit = XFRM_INF;
+	req.xsinfo.lft.hard_packet_limit = XFRM_INF;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "algo") == 0) {
+			struct {
+				struct xfrm_algo alg;
+				char buf[XFRM_ALGO_KEY_BUF_SIZE];
+			} alg;
+			int len;
+			enum xfrm_attr_type_t type;
+			char *name;
+			char *key;
+
+			NEXT_ARG();
+
+			if (strcmp(*argv, "E") == 0) {
+				if (ealgop)
+					duparg("ALGOTYPE", *argv);
+				ealgop = *argv;
+				type = XFRMA_ALG_CRYPT;
+			} else if (strcmp(*argv, "A") == 0) {
+				if (aalgop)
+					duparg("ALGOTYPE", *argv);
+				aalgop = *argv;
+				type = XFRMA_ALG_AUTH;
+
+			} else if (strcmp(*argv, "C") == 0) {
+				if (calgop)
+					duparg("ALGOTYPE", *argv);
+				calgop = *argv;
+				type = XFRMA_ALG_COMP;
+			} else
+				invarg("\"ALGOTYPE\" is invalid\n", *argv);
+
+			if (!NEXT_ARG_OK())
+				missarg("ALGONAME");
+			NEXT_ARG();
+			name = *argv;
+
+			if (!NEXT_ARG_OK())
+				missarg("ALGOKEY");
+			NEXT_ARG();
+			key = *argv;
+
+			memset(&alg, 0, sizeof(alg));
+
+			xfrm_algo_parse((void *)&alg, type, name, key, sizeof(alg.buf));
+			len = sizeof(struct xfrm_algo) + alg.alg.alg_key_len;
+
+			addattr_l(&req.n, sizeof(req.buf), type,
+				  (void *)&alg, len);
+
+		} else if (strcmp(*argv, "mode") == 0) {
+			NEXT_ARG();
+			xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
+		} else if (strcmp(*argv, "reqid") == 0) {
+			NEXT_ARG();
+			xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
+		} else if (strcmp(*argv, "flag") == 0) {
+			NEXT_ARG();
+			xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
+		} else if (strcmp(*argv, "sel") == 0) {
+			NEXT_ARG();
+			xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
+
+		} else if (strcmp(*argv, "limit") == 0) {
+			NEXT_ARG();
+			xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
+		} else {
+			if (idp)
+				invarg("unknown", *argv);
+			idp = *argv;
+
+			/* ID */
+			xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
+				      &req.xsinfo.family, &argc, &argv);
+			if (preferred_family == AF_UNSPEC)
+				preferred_family = req.xsinfo.family;
+		}
+		argc--; argv++;
+	}
+
+	if (!idp) {
+		fprintf(stderr, "Not enough information: \"ID\" is required\n");
+		exit(1);
+	}
+
+	if (ealgop || aalgop || calgop) {
+		if (req.xsinfo.id.proto != IPPROTO_ESP &&
+		    req.xsinfo.id.proto != IPPROTO_AH &&
+		    req.xsinfo.id.proto != IPPROTO_COMP) {
+			fprintf(stderr, "\"ALGO\" is invalid with proto=%d\n", req.xsinfo.id.proto);
+			exit(1);
+		}
+	} else {
+		if (req.xsinfo.id.proto == IPPROTO_ESP ||
+		    req.xsinfo.id.proto == IPPROTO_AH ||
+		    req.xsinfo.id.proto == IPPROTO_COMP) {
+			fprintf(stderr, "\"ALGO\" is required with proto=%d\n", req.xsinfo.id.proto);
+			exit (1);
+		}
+	}
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+		exit(1);
+
+	if (req.xsinfo.family == AF_UNSPEC)
+		req.xsinfo.family = AF_INET;
+
+	if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+		exit(2);
+
+	rtnl_close(&rth);
+
+	return 0;
+}
+
+static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
+{
+	if (!filter.use)
+		return 1;
+
+	if (filter.id_src_mask)
+		if (memcmp(&xsinfo->saddr, &filter.xsinfo.saddr,
+			   filter.id_src_mask) != 0)
+			return 0;
+	if (filter.id_dst_mask)
+		if (memcmp(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
+			   filter.id_dst_mask) != 0)
+			return 0;
+	if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
+		return 0;
+	if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
+		return 0;
+	if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
+		return 0;
+	if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
+		return 0;
+	if (filter.state_flags_mask)
+		if ((xsinfo->flags & filter.xsinfo.flags) == 0)
+			return 0;
+
+	return 1;
+}
+
+int xfrm_state_print(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+	FILE *fp = (FILE*)arg;
+	struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
+	int len = n->nlmsg_len;
+	struct rtattr * tb[XFRMA_MAX+1];
+	int ntb;
+
+	if (n->nlmsg_type != XFRM_MSG_NEWSA &&
+	    n->nlmsg_type != XFRM_MSG_DELSA) {
+		fprintf(stderr, "Not a state: %08x %08x %08x\n",
+			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+		return 0;
+	}
+
+	len -= NLMSG_LENGTH(sizeof(*xsinfo));
+	if (len < 0) {
+		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+		return -1;
+	}
+
+	if (!xfrm_state_filter_match(xsinfo))
+		return 0;
+
+	memset(tb, 0, sizeof(tb));
+	ntb = parse_rtattr_byindex(tb, XFRM_MAX_DEPTH, XFRMS_RTA(xsinfo), len);
+
+	if (n->nlmsg_type == XFRM_MSG_DELSA)
+		fprintf(fp, "Deleted ");
+
+	xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
+			   xsinfo->reqid, xsinfo->family, fp, NULL);
+
+	if (show_stats > 0) {
+		fprintf(fp, "\t");
+		fprintf(fp, "seq 0x%08u ", xsinfo->seq);
+		fprintf(fp, "replay-window %d ", xsinfo->replay_window);
+		fprintf(fp, "flags ");
+		if (xsinfo->flags & XFRM_STATE_NOECN)
+			fprintf(fp, "noecn ");
+		fprintf(fp, "(0x%s)", strxf_flags(xsinfo->flags));
+
+		fprintf(fp, "\n");
+	}
+
+	xfrm_xfrma_print(tb, ntb, xsinfo->family, fp, "\t");
+
+	if (show_stats > 0) {
+		fprintf(fp, "\tsel:\n");
+		xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, "\t  ");
+	}
+
+	if (show_stats > 0) {
+		xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, "\t");
+		xfrm_stats_print(&xsinfo->stats, fp, "\t");
+	}
+
+	return 0;
+}
+
+static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
+{
+	struct rtnl_handle rth;
+	struct {
+		struct nlmsghdr 	n;
+		struct xfrm_usersa_id	xsid;
+	} req;
+	struct xfrm_id id;
+	char *idp = NULL;
+
+	memset(&req, 0, sizeof(req));
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid));
+	req.n.nlmsg_flags = NLM_F_REQUEST;
+	req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA;
+	req.xsid.family = preferred_family;
+
+	while (argc > 0) {
+		/*
+		 * XXX: Source address is not used and ignore it to follow
+		 * XXX: a manner of setkey e.g. in the case of deleting/getting
+		 * XXX: message of IPsec SA.
+		 */
+		xfrm_address_t ignore_saddr;
+
+		if (idp)
+			invarg("unknown", *argv);
+		idp = *argv;
+
+		/* ID */
+		memset(&id, 0, sizeof(id));
+		xfrm_id_parse(&ignore_saddr, &id, &req.xsid.family,
+			      &argc, &argv);
+
+		memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
+		req.xsid.spi = id.spi;
+		req.xsid.proto = id.proto;
+
+		argc--; argv++;
+	}
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+		exit(1);
+
+	if (req.xsid.family == AF_UNSPEC)
+		req.xsid.family = AF_INET;
+
+	if (delete) {
+		if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+			exit(2);
+	} else {
+		char buf[NLMSG_BUF_SIZE];
+		struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
+
+		memset(buf, 0, sizeof(buf));
+
+		if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0)
+			exit(2);
+
+		if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
+			fprintf(stderr, "An error :-)\n");
+			exit(1);
+		}
+	}
+
+	rtnl_close(&rth);
+
+	return 0;
+}
+
+/*
+ * With an existing state of nlmsg, make new nlmsg for deleting the state
+ * and store it to buffer.
+ */
+int xfrm_state_keep(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+{
+	struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
+	struct rtnl_handle *rth = xb->rth;
+	struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
+	int len = n->nlmsg_len;
+	struct nlmsghdr *new_n;
+	struct xfrm_usersa_id *xsid;
+
+	if (n->nlmsg_type != XFRM_MSG_NEWSA) {
+		fprintf(stderr, "Not a state: %08x %08x %08x\n",
+			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+		return 0;
+	}
+
+	len -= NLMSG_LENGTH(sizeof(*xsinfo));
+	if (len < 0) {
+		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+		return -1;
+	}
+
+	if (!xfrm_state_filter_match(xsinfo))
+		return 0;
+
+	if (xb->offset > xb->size) {
+		fprintf(stderr, "Flush buffer overflow\n");
+		return -1;
+	}
+
+	new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
+	new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
+	new_n->nlmsg_flags = NLM_F_REQUEST;
+	new_n->nlmsg_type = XFRM_MSG_DELSA;
+	new_n->nlmsg_seq = ++rth->seq;
+
+	xsid = NLMSG_DATA(new_n);
+	xsid->family = xsinfo->family;
+	memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
+	xsid->spi = xsinfo->id.spi;
+	xsid->proto = xsinfo->id.proto;
+
+	xb->offset += new_n->nlmsg_len;
+	xb->nlmsg_count ++;
+
+	return 0;
+}
+
+static int xfrm_state_list_or_flush(int argc, char **argv, int flush)
+{
+	char *idp = NULL;
+	struct rtnl_handle rth;
+
+	filter.use = 1;
+	filter.xsinfo.family = preferred_family;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "mode") == 0) {
+			NEXT_ARG();
+			xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
+
+			filter.mode_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "reqid") == 0) {
+			NEXT_ARG();
+			xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
+
+			filter.reqid_mask = XFRM_FILTER_MASK_FULL;
+
+		} else if (strcmp(*argv, "flag") == 0) {
+			NEXT_ARG();
+			xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
+
+			filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
+
+		} else {
+			if (idp)
+				invarg("unknown", *argv);
+			idp = *argv;
+
+			/* ID */
+			xfrm_id_parse(&filter.xsinfo.saddr,
+				      &filter.xsinfo.id,
+					&filter.xsinfo.family, &argc, &argv);
+			if (preferred_family == AF_UNSPEC)
+				preferred_family = filter.xsinfo.family;
+		}
+		argc--; argv++;
+	}
+
+	if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
+		exit(1);
+
+	if (flush) {
+		struct xfrm_buffer xb;
+		char buf[NLMSG_FLUSH_BUF_SIZE];
+		int i;
+
+		xb.buf = buf;
+		xb.size = sizeof(buf);
+		xb.rth = &rth;
+
+		for (i = 0; ; i++) {
+			xb.offset = 0;
+			xb.nlmsg_count = 0;
+
+			if (show_stats > 1)
+				fprintf(stderr, "Flush round = %d\n", i);
+
+			if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
+				perror("Cannot send dump request");
+				exit(1);
+			}
+
+			if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb, NULL, NULL) < 0) {
+				fprintf(stderr, "Flush terminated\n");
+				exit(1);
+			}
+			if (xb.nlmsg_count == 0) {
+				if (show_stats > 1)
+					fprintf(stderr, "Flush completed\n");
+				break;
+			}
+
+			if (rtnl_send(&rth, xb.buf, xb.offset) < 0) {
+				perror("Failed to send flush request\n");
+				exit(1);
+			}
+			if (show_stats > 1)
+				fprintf(stderr, "Flushed nlmsg count = %d\n", xb.nlmsg_count);
+
+			xb.offset = 0;
+			xb.nlmsg_count = 0;
+		}
+
+	} else {
+		if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
+			perror("Cannot send dump request");
+			exit(1);
+		}
+
+		if (rtnl_dump_filter(&rth, xfrm_state_print, stdout, NULL, NULL) < 0) {
+			fprintf(stderr, "Dump terminated\n");
+			exit(1);
+		}
+	}
+
+	rtnl_close(&rth);
+
+	exit(0);
+}
+
+int do_xfrm_state(int argc, char **argv)
+{
+	if (argc < 1)
+		return xfrm_state_list_or_flush(0, NULL, 0);
+
+	if (matches(*argv, "add") == 0)
+		return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
+					 argc-1, argv+1);
+	if (matches(*argv, "update") == 0)
+		return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
+					 argc-1, argv+1);
+	if (matches(*argv, "delete") == 0 || matches(*argv, "del") == 0)
+		return xfrm_state_get_or_delete(argc-1, argv+1, 1);
+	if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
+	    || matches(*argv, "lst") == 0)
+		return xfrm_state_list_or_flush(argc-1, argv+1, 0);
+	if (matches(*argv, "get") == 0)
+		return xfrm_state_get_or_delete(argc-1, argv+1, 0);
+	if (matches(*argv, "flush") == 0)
+		return xfrm_state_list_or_flush(argc-1, argv+1, 1);
+	if (matches(*argv, "help") == 0)
+		usage();
+	fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
+	exit(-1);
+}