- add 'ip rule' support. First take..

   text    data     bss     dec     hex filename
   2999       0       0    2999     bb7 networking/libiproute/iprule.o

14 files changed, 497 insertions, 28 deletions

diff --git a/include/applets.h b/include/applets.h
index 1d6cc932e..80ee222d8 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -164,6 +164,7 @@ USE_IPCRM(APPLET(ipcrm, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS))
 USE_IPCS(APPLET(ipcs, _BB_DIR_USR_BIN, _BB_SUID_ALWAYS))
 USE_IPLINK(APPLET(iplink, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_IPROUTE(APPLET(iproute, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_IPRULE(APPLET(iprule, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_IPTUNNEL(APPLET(iptunnel, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_KILL(APPLET(kill, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_KILLALL(APPLET_ODDNAME(killall, kill, _BB_DIR_USR_BIN, _BB_SUID_NEVER, killall))
diff --git a/include/usage.h b/include/usage.h
index 7898473a6..2a6e335ba 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1453,10 +1453,10 @@ USE_FEATURE_DATE_ISOFMT( \
         "\t-s\tstrip symbol tables"
 
 #define ip_trivial_usage \
-        "[ OPTIONS ] { address | link | route | tunnel } { COMMAND | help }"
+        "[OPTIONS] {address | link | route | tunnel | rule} {COMMAND}"
 #define ip_full_usage \
-        "ip [ OPTIONS ] OBJECT { COMMAND | help }\n" \
-        "where  OBJECT := { link | addr | route | tunnel }\n" \
+        "ip [OPTIONS] OBJECT {COMMAND}\n" \
+        "where  OBJECT := {link | addr | route | tunnel |rule}\n" \
         "OPTIONS := { -f[amily] { inet | inet6 | link } | -o[neline] }"
 
 #define ipaddr_trivial_usage \
@@ -1529,6 +1529,17 @@ USE_FEATURE_DATE_ISOFMT( \
         "\t\t\tSELECTOR := [ root PREFIX ] [ match PREFIX ] [ proto RTPROTO ]\n" \
         "\t\t\tROUTE := [ TYPE ] PREFIX [ tos TOS ] [ proto RTPROTO ]"
 
+#define iprule_trivial_usage \
+        "{[ list | add | del ] RULE}"
+#define iprule_full_usage \
+        "iprule [ list | add | del ] SELECTOR ACTION\n" \
+        "\tSELECTOR := [ from PREFIX ] [ to PREFIX ] [ tos TOS ] [ fwmark FWMARK ]\n" \
+        "\t\t\t[ dev STRING ] [ pref NUMBER ]\n" \
+        "\tACTION := [ table TABLE_ID ] [ nat ADDRESS ]\n" \
+        "\t\t\t[ prohibit | reject | unreachable ]\n" \
+        "\t\t\t[ realms [SRCREALM/]DSTREALM ]\n" \
+        "\tTABLE_ID := [ local | main | default | NUMBER ]"
+
 #define iptunnel_trivial_usage \
         "{ add | change | del | show } [ NAME ]\n" \
         "\t\t[ mode { ipip | gre | sit } ]\n" \
diff --git a/networking/Config.in b/networking/Config.in
index 34847a14b..ba41ab119 100644
--- a/networking/Config.in
+++ b/networking/Config.in
@@ -364,6 +364,13 @@ config FEATURE_IP_TUNNEL
         help
           Add support for tunneling commands to "ip".
 
+config FEATURE_IP_RULE
+        bool "ip rule"
+        default n
+        depends on IP
+        help
+          Add support for rule commands to "ip".
+
 config FEATURE_IP_SHORT_FORMS
         bool "Support short forms of ip commands."
         default n
@@ -398,6 +405,11 @@ config IPTUNNEL
         default y
         depends on FEATURE_IP_SHORT_FORMS && FEATURE_IP_TUNNEL
 
+config IPRULE
+        bool
+        default y
+        depends on FEATURE_IP_SHORT_FORMS && FEATURE_IP_RULE
+
 config IPCALC
         bool "ipcalc"
         default n
diff --git a/networking/Kbuild b/networking/Kbuild
index 066475925..a9a51fc2e 100644
--- a/networking/Kbuild
+++ b/networking/Kbuild
@@ -21,6 +21,7 @@ lib-$(CONFIG_IPCALC)       += ipcalc.o
 lib-$(CONFIG_IPADDR)       += ipaddr.o
 lib-$(CONFIG_IPLINK)       += iplink.o
 lib-$(CONFIG_IPROUTE)      += iproute.o
+lib-$(CONFIG_IPRULE)       += iprule.o
 lib-$(CONFIG_IPTUNNEL)     += iptunnel.o
 lib-$(CONFIG_NAMEIF)       += nameif.o
 lib-$(CONFIG_NC)           += nc.o
diff --git a/networking/ip.c b/networking/ip.c
index 636315597..4c8b89e2f 100644
--- a/networking/ip.c
+++ b/networking/ip.c
@@ -24,26 +24,22 @@ int ip_main(int argc, char **argv)
         ip_parse_common_args(&argc, &argv);
 
         if (argc > 1) {
-#ifdef CONFIG_FEATURE_IP_ADDRESS
-                if (matches(argv[1], "address") == 0) {
+                if (ENABLE_FEATURE_IP_ADDRESS && matches(argv[1], "address") == 0) {
                         ret = do_ipaddr(argc-2, argv+2);
                 }
-#endif
-#ifdef CONFIG_FEATURE_IP_ROUTE
-                if (matches(argv[1], "route") == 0) {
+                if (ENABLE_FEATURE_IP_ROUTE && matches(argv[1], "route") == 0) {
                         ret = do_iproute(argc-2, argv+2);
                 }
-#endif
-#ifdef CONFIG_FEATURE_IP_LINK
-                if (matches(argv[1], "link") == 0) {
+                if (ENABLE_FEATURE_IP_LINK && matches(argv[1], "link") == 0) {
                         ret = do_iplink(argc-2, argv+2);
                 }
-#endif
-#ifdef CONFIG_FEATURE_IP_TUNNEL
-                if (matches(argv[1], "tunnel") == 0 || strcmp(argv[1], "tunl") == 0) {
+                if (ENABLE_FEATURE_IP_TUNNEL &&
+                        (matches(argv[1], "tunnel") == 0 || strcmp(argv[1], "tunl") == 0)) {
                         ret = do_iptunnel(argc-2, argv+2);
                 }
-#endif
+                if (ENABLE_FEATURE_IP_RULE && matches(argv[1], "rule") == 0) {
+                        ret = do_iprule(argc-2, argv+2);
+                }
         }
         if (ret) {
                 bb_show_usage();
diff --git a/networking/iprule.c b/networking/iprule.c
new file mode 100644
index 000000000..43eaea633
--- /dev/null
+++ b/networking/iprule.c
@@ -0,0 +1,25 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * ip.c         "ip" utility frontend.
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ *
+ * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ *
+ * Changes:
+ *
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ */
+
+#include "libiproute/utils.h"
+#include "libiproute/ip_common.h"
+
+#include "busybox.h"
+
+int iprule_main(int argc, char **argv)
+{
+        ip_parse_common_args(&argc, &argv);
+
+        return do_iprule(argc-1, argv+1);
+}
diff --git a/networking/libiproute/Kbuild b/networking/libiproute/Kbuild
index 476374e19..8383630f2 100644
--- a/networking/libiproute/Kbuild
+++ b/networking/libiproute/Kbuild
@@ -12,6 +12,7 @@ lib-$(CONFIG_IP) += \
         iplink.o \
         iproute.o \
         iptunnel.o \
+        iprule.o \
         libnetlink.o \
         ll_addr.o \
         ll_map.o \
@@ -56,3 +57,10 @@ lib-$(CONFIG_IPTUNNEL) += \
         iptunnel.o \
         rt_names.o \
         utils.o
+
+lib-$(CONFIG_IPRULE) += \
+        ip_parse_common_args.o \
+        iprule.o \
+        rt_names.o \
+        utils.o
+
diff --git a/networking/libiproute/ipaddress.c b/networking/libiproute/ipaddress.c
index fc6cf7beb..42cf629c6 100644
--- a/networking/libiproute/ipaddress.c
+++ b/networking/libiproute/ipaddress.c
@@ -99,7 +99,7 @@ static void print_queuelen(char *name)
 }
 
 static int print_linkinfo(struct sockaddr_nl ATTRIBUTE_UNUSED *who,
-                struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
+                const struct nlmsghdr *n, void ATTRIBUTE_UNUSED *arg)
 {
         FILE *fp = (FILE*)arg;
         struct ifinfomsg *ifi = NLMSG_DATA(n);
diff --git a/networking/libiproute/iprule.c b/networking/libiproute/iprule.c
new file mode 100644
index 000000000..19338770f
--- /dev/null
+++ b/networking/libiproute/iprule.c
@@ -0,0 +1,331 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * iprule.c             "ip rule".
+ *
+ *              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.
+ *
+ * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ *
+ * Changes:
+ *
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ */
+
+#include "libbb.h"
+#include <syslog.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <arpa/inet.h>
+
+#include "rt_names.h"
+#include "utils.h"
+/*
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+        fprintf(stderr, "Usage: ip rule [ list | add | del ] SELECTOR ACTION\n");
+        fprintf(stderr, "SELECTOR := [ from PREFIX ] [ to PREFIX ] [ tos TOS ] [ fwmark FWMARK ]\n");
+        fprintf(stderr, "            [ dev STRING ] [ pref NUMBER ]\n");
+        fprintf(stderr, "ACTION := [ table TABLE_ID ] [ nat ADDRESS ]\n");
+        fprintf(stderr, "          [ prohibit | reject | unreachable ]\n");
+        fprintf(stderr, "          [ realms [SRCREALM/]DSTREALM ]\n");
+        fprintf(stderr, "TABLE_ID := [ local | main | default | NUMBER ]\n");
+        exit(-1);
+}
+*/
+static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
+                                        struct nlmsghdr *n, void *arg)
+{
+        FILE *fp = (FILE*)arg;
+        struct rtmsg *r = NLMSG_DATA(n);
+        int len = n->nlmsg_len;
+        int host_len = -1;
+        struct rtattr * tb[RTA_MAX+1];
+        char abuf[256];
+        SPRINT_BUF(b1);
+
+        if (n->nlmsg_type != RTM_NEWRULE)
+                return 0;
+
+        len -= NLMSG_LENGTH(sizeof(*r));
+        if (len < 0)
+                return -1;
+
+        memset(tb, 0, sizeof(tb));
+        parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
+
+        if (r->rtm_family == AF_INET)
+                host_len = 32;
+        else if (r->rtm_family == AF_INET6)
+                host_len = 128;
+/*      else if (r->rtm_family == AF_DECnet)
+                host_len = 16;
+        else if (r->rtm_family == AF_IPX)
+                host_len = 80;
+*/
+        if (tb[RTA_PRIORITY])
+                fprintf(fp, "%u:\t", *(unsigned*)RTA_DATA(tb[RTA_PRIORITY]));
+        else
+                fprintf(fp, "0:\t");
+
+        fprintf(fp, "from ");
+        if (tb[RTA_SRC]) {
+                if (r->rtm_src_len != host_len) {
+                        fprintf(fp, "%s/%u", rt_addr_n2a(r->rtm_family,
+                                                         RTA_PAYLOAD(tb[RTA_SRC]),
+                                                         RTA_DATA(tb[RTA_SRC]),
+                                                         abuf, sizeof(abuf)),
+                                r->rtm_src_len
+                                );
+                } else {
+                        fprintf(fp, "%s", format_host(r->rtm_family,
+                                                       RTA_PAYLOAD(tb[RTA_SRC]),
+                                                       RTA_DATA(tb[RTA_SRC]),
+                                                       abuf, sizeof(abuf))
+                                );
+                }
+        } else if (r->rtm_src_len) {
+                fprintf(fp, "0/%d", r->rtm_src_len);
+        } else {
+                fprintf(fp, "all");
+        }
+        fprintf(fp, " ");
+
+        if (tb[RTA_DST]) {
+                if (r->rtm_dst_len != host_len) {
+                        fprintf(fp, "to %s/%u ", rt_addr_n2a(r->rtm_family,
+                                                         RTA_PAYLOAD(tb[RTA_DST]),
+                                                         RTA_DATA(tb[RTA_DST]),
+                                                         abuf, sizeof(abuf)),
+                                r->rtm_dst_len
+                                );
+                } else {
+                        fprintf(fp, "to %s ", format_host(r->rtm_family,
+                                                       RTA_PAYLOAD(tb[RTA_DST]),
+                                                       RTA_DATA(tb[RTA_DST]),
+                                                       abuf, sizeof(abuf)));
+                }
+        } else if (r->rtm_dst_len) {
+                fprintf(fp, "to 0/%d ", r->rtm_dst_len);
+        }
+
+        if (r->rtm_tos) {
+                fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
+        }
+        if (tb[RTA_PROTOINFO]) {
+                fprintf(fp, "fwmark %#x ", *(__u32*)RTA_DATA(tb[RTA_PROTOINFO]));
+        }
+
+        if (tb[RTA_IIF]) {
+                fprintf(fp, "iif %s ", (char*)RTA_DATA(tb[RTA_IIF]));
+        }
+
+        if (r->rtm_table)
+                fprintf(fp, "lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1, sizeof(b1)));
+
+        if (tb[RTA_FLOW]) {
+                __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
+                __u32 from = to>>16;
+                to &= 0xFFFF;
+                if (from) {
+                        fprintf(fp, "realms %s/",
+                                rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
+                }
+                fprintf(fp, "%s ",
+                        rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
+        }
+
+        if (r->rtm_type == RTN_NAT) {
+                if (tb[RTA_GATEWAY]) {
+                        fprintf(fp, "map-to %s ",
+                                format_host(r->rtm_family,
+                                            RTA_PAYLOAD(tb[RTA_GATEWAY]),
+                                            RTA_DATA(tb[RTA_GATEWAY]),
+                                            abuf, sizeof(abuf)));
+                } else
+                        fprintf(fp, "masquerade");
+        } else if (r->rtm_type != RTN_UNICAST)
+                fprintf(fp, "%s", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
+
+        fprintf(fp, "\n");
+        fflush(fp);
+        return 0;
+}
+
+int iprule_list(int argc, char **argv)
+{
+        struct rtnl_handle rth;
+        int af = preferred_family;
+
+        if (af == AF_UNSPEC)
+                af = AF_INET;
+
+        if (argc > 0) {
+                bb_error_msg("\"rule show\" needs no arguments");
+                return -1;
+        }
+
+        if (rtnl_open(&rth, 0) < 0)
+                return 1;
+
+        if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) {
+                bb_perror_msg("Cannot send dump request");
+                return 1;
+        }
+
+        if (rtnl_dump_filter(&rth, print_rule, stdout, NULL, NULL) < 0) {
+                bb_error_msg("Dump terminated");
+                return 1;
+        }
+
+        return 0;
+}
+
+
+int iprule_modify(int cmd, int argc, char **argv)
+{
+        int table_ok = 0;
+        struct rtnl_handle rth;
+        struct {
+                struct nlmsghdr n;
+                struct rtmsg    r;
+                char            buf[1024];
+        } req;
+
+        memset(&req, 0, sizeof(req));
+
+        req.n.nlmsg_type = cmd;
+        req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
+        req.n.nlmsg_flags = NLM_F_REQUEST;
+        req.r.rtm_family = preferred_family;
+        req.r.rtm_protocol = RTPROT_BOOT;
+        req.r.rtm_scope = RT_SCOPE_UNIVERSE;
+        req.r.rtm_table = 0;
+        req.r.rtm_type = RTN_UNSPEC;
+
+        if (cmd == RTM_NEWRULE) {
+                req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
+                req.r.rtm_type = RTN_UNICAST;
+        }
+
+        while (argc > 0) {
+                if (strcmp(*argv, "from") == 0) {
+                        inet_prefix dst;
+                        NEXT_ARG();
+                        get_prefix(&dst, *argv, req.r.rtm_family);
+                        req.r.rtm_src_len = dst.bitlen;
+                        addattr_l(&req.n, sizeof(req), RTA_SRC, &dst.data, dst.bytelen);
+                } else if (strcmp(*argv, "to") == 0) {
+                        inet_prefix dst;
+                        NEXT_ARG();
+                        get_prefix(&dst, *argv, req.r.rtm_family);
+                        req.r.rtm_dst_len = dst.bitlen;
+                        addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
+                } else if (matches(*argv, "preference") == 0 ||
+                           matches(*argv, "order") == 0 ||
+                           matches(*argv, "priority") == 0) {
+                        __u32 pref;
+                        NEXT_ARG();
+                        if (get_u32(&pref, *argv, 0))
+                                invarg("preference value", *argv);
+                        addattr32(&req.n, sizeof(req), RTA_PRIORITY, pref);
+                } else if (strcmp(*argv, "tos") == 0) {
+                        __u32 tos;
+                        NEXT_ARG();
+                        if (rtnl_dsfield_a2n(&tos, *argv))
+                                invarg("TOS value", *argv);
+                        req.r.rtm_tos = tos;
+                } else if (strcmp(*argv, "fwmark") == 0) {
+                        __u32 fwmark;
+                        NEXT_ARG();
+                        if (get_u32(&fwmark, *argv, 0))
+                                invarg("fwmark value", *argv);
+                        addattr32(&req.n, sizeof(req), RTA_PROTOINFO, fwmark);
+                } else if (matches(*argv, "realms") == 0) {
+                        __u32 realm;
+                        NEXT_ARG();
+                        if (get_rt_realms(&realm, *argv))
+                                invarg("realms", *argv);
+                        addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
+                } else if (matches(*argv, "table") == 0 ||
+                           strcmp(*argv, "lookup") == 0) {
+                        int tid;
+                        NEXT_ARG();
+                        if (rtnl_rttable_a2n(&tid, *argv))
+                                invarg("table ID", *argv);
+                        req.r.rtm_table = tid;
+                        table_ok = 1;
+                } else if (strcmp(*argv, "dev") == 0 ||
+                           strcmp(*argv, "iif") == 0) {
+                        NEXT_ARG();
+                        addattr_l(&req.n, sizeof(req), RTA_IIF, *argv, strlen(*argv)+1);
+                } else if (strcmp(*argv, "nat") == 0 ||
+                           matches(*argv, "map-to") == 0) {
+                        NEXT_ARG();
+                        addattr32(&req.n, sizeof(req), RTA_GATEWAY, get_addr32(*argv));
+                        req.r.rtm_type = RTN_NAT;
+                } else {
+                        int type;
+
+                        if (strcmp(*argv, "type") == 0) {
+                                NEXT_ARG();
+                        }
+                        if (matches(*argv, "help") == 0)
+                                bb_show_usage();
+                        if (rtnl_rtntype_a2n(&type, *argv))
+                                invarg("Failed to parse rule type", *argv);
+                        req.r.rtm_type = type;
+                }
+                argc--;
+                argv++;
+        }
+
+        if (req.r.rtm_family == AF_UNSPEC)
+                req.r.rtm_family = AF_INET;
+
+        if (!table_ok && cmd == RTM_NEWRULE)
+                req.r.rtm_table = RT_TABLE_MAIN;
+
+        if (rtnl_open(&rth, 0) < 0)
+                return 1;
+
+        if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+                return 2;
+
+        return 0;
+}
+
+int do_iprule(int argc, char **argv)
+{
+        static const char * const ip_rule_commands[] =
+                {"add", "delete", "list", "show", 0};
+        int command_num = 2;
+        int cmd;
+
+        if (argc < 1)
+                return iprule_list(0, NULL);
+        if (*argv)
+                command_num = index_in_substr_array(ip_rule_commands, *argv);
+        switch (command_num) {
+                case 0: /* add */
+                        cmd = RTM_NEWRULE;
+                        break;
+                case 1: /* delete */
+                        cmd = RTM_DELRULE;
+                        break;
+                case 2: /* list */
+                case 3: /* show */
+                        return iprule_list(argc-1, argv+1);
+                        break;
+                default:
+                        bb_error_msg_and_die("unknown command %s", *argv);
+        }
+        return iprule_modify(cmd, argc-1, argv+1);
+}
+
diff --git a/networking/libiproute/libnetlink.c b/networking/libiproute/libnetlink.c
index ec52cff73..c7e17e1dd 100644
--- a/networking/libiproute/libnetlink.c
+++ b/networking/libiproute/libnetlink.c
@@ -121,10 +121,10 @@ int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
 }
 
 int rtnl_dump_filter(struct rtnl_handle *rth,
-                     int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
-                     void *arg1,
-                     int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
-                     void *arg2)
+                int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
+                void *arg1,
+                int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
+                void *arg2)
 {
         char buf[8192];
         struct sockaddr_nl nladdr;
diff --git a/networking/libiproute/libnetlink.h b/networking/libiproute/libnetlink.h
index c2ef984c4..7cfcd2042 100644
--- a/networking/libiproute/libnetlink.h
+++ b/networking/libiproute/libnetlink.h
@@ -20,14 +20,14 @@ extern void rtnl_close(struct rtnl_handle *rth);
 extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
 extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
 extern int rtnl_dump_filter(struct rtnl_handle *rth,
-                            int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
-                            void *arg1,
-                            int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
-                            void *arg2);
+                        int (*filter)(struct sockaddr_nl*, struct nlmsghdr *n, void*),
+                        void *arg1,
+                        int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
+                        void *arg2);
 extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
-                     unsigned groups, struct nlmsghdr *answer,
-                     int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
-                     void *jarg);
+                        unsigned groups, struct nlmsghdr *answer,
+                        int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
+                        void *jarg);
 extern int rtnl_send(struct rtnl_handle *rth, char *buf, int);
 
 
diff --git a/networking/libiproute/rt_names.c b/networking/libiproute/rt_names.c
index c0f790754..ed21fbe26 100644
--- a/networking/libiproute/rt_names.c
+++ b/networking/libiproute/rt_names.c
@@ -240,7 +240,23 @@ int rtnl_rtrealm_a2n(uint32_t *id, char *arg)
         return 0;
 }
 
-
+#if ENABLE_FEATURE_IP_RULE
+const char * rtnl_rtrealm_n2a(int id, char *buf, int len)
+{
+        if (id<0 || id>=256) {
+                snprintf(buf, len, "%d", id);
+                return buf;
+        }
+        if (!rtnl_rtrealm_tab[id]) {
+                if (!rtnl_rtrealm_init)
+                        rtnl_rtrealm_initialize();
+        }
+        if (rtnl_rtrealm_tab[id])
+                return rtnl_rtrealm_tab[id];
+        snprintf(buf, len, "%d", id);
+        return buf;
+}
+#endif
 
 static const char * rtnl_rtdsfield_tab[256] = {
         "0",
@@ -303,3 +319,66 @@ int rtnl_dsfield_a2n(uint32_t *id, char *arg)
         *id = res;
         return 0;
 }
+
+#if ENABLE_FEATURE_IP_RULE
+static int rtnl_rttable_init;
+static const char * rtnl_rttable_tab[256] = {
+        "unspec",
+};
+static void rtnl_rttable_initialize(void)
+{
+        rtnl_rttable_init = 1;
+        rtnl_rttable_tab[255] = "local";
+        rtnl_rttable_tab[254] = "main";
+        rtnl_rttable_tab[253] = "default";
+        rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab, 256);
+}
+
+const char *rtnl_rttable_n2a(int id, char *buf, int len)
+{
+        if (id < 0 || id >= 256) {
+                snprintf(buf, len, "%d", id);
+                return buf;
+        }
+        if (!rtnl_rttable_tab[id]) {
+                if (!rtnl_rttable_init)
+                        rtnl_rttable_initialize();
+        }
+        if (rtnl_rttable_tab[id])
+                return rtnl_rttable_tab[id];
+        snprintf(buf, len, "%d", id);
+        return buf;
+}
+
+int rtnl_rttable_a2n(uint32_t * id, char *arg)
+{
+        static char *cache = NULL;
+        static unsigned long res;
+        char *end;
+        int i;
+
+        if (cache && strcmp(cache, arg) == 0) {
+                *id = res;
+                return 0;
+        }
+
+        if (!rtnl_rttable_init)
+                rtnl_rttable_initialize();
+
+        for (i = 0; i < 256; i++) {
+                if (rtnl_rttable_tab[i] && strcmp(rtnl_rttable_tab[i], arg) == 0) {
+                        cache = (char*)rtnl_rttable_tab[i];
+                        res = i;
+                        *id = res;
+                        return 0;
+                }
+        }
+
+        i = strtoul(arg, &end, 0);
+        if (!end || end == arg || *end || i > 255)
+                return -1;
+        *id = i;
+        return 0;
+}
+
+#endif
diff --git a/networking/libiproute/rt_names.h b/networking/libiproute/rt_names.h
index 41afeed63..92b807f3d 100644
--- a/networking/libiproute/rt_names.h
+++ b/networking/libiproute/rt_names.h
@@ -6,11 +6,14 @@
 
 extern const char* rtnl_rtprot_n2a(int id, char *buf, int len);
 extern const char* rtnl_rtscope_n2a(int id, char *buf, int len);
+extern const char* rtnl_rtrealm_n2a(int id, char *buf, int len);
 extern const char* rtnl_dsfield_n2a(int id, char *buf, int len);
+extern const char* rtnl_rttable_n2a(int id, char *buf, int len);
 extern int rtnl_rtprot_a2n(uint32_t *id, char *arg);
 extern int rtnl_rtscope_a2n(uint32_t *id, char *arg);
 extern int rtnl_rtrealm_a2n(uint32_t *id, char *arg);
 extern int rtnl_dsfield_a2n(uint32_t *id, char *arg);
+extern int rtnl_rttable_a2n(uint32_t *id, char *arg);
 
 
 extern const char * ll_type_n2a(int type, char *buf, int len);
diff --git a/scripts/defconfig b/scripts/defconfig
index ab50409d4..11361dc42 100644
--- a/scripts/defconfig
+++ b/scripts/defconfig
@@ -535,11 +535,13 @@ CONFIG_FEATURE_IP_ADDRESS=y
 CONFIG_FEATURE_IP_LINK=y
 CONFIG_FEATURE_IP_ROUTE=y
 CONFIG_FEATURE_IP_TUNNEL=y
+CONFIG_FEATURE_IP_RULE=y
 CONFIG_FEATURE_IP_SHORT_FORMS=y
 CONFIG_IPADDR=y
 CONFIG_IPLINK=y
 CONFIG_IPROUTE=y
 CONFIG_IPTUNNEL=y
+CONFIG_IPRULE=y
 CONFIG_IPCALC=y
 CONFIG_FEATURE_IPCALC_FANCY=y
 CONFIG_FEATURE_IPCALC_LONG_OPTIONS=y