5 files changed, 170 insertions, 27 deletions

diff --git a/include/usage.h b/include/usage.h
index da4fad886..0a0948bdd 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -878,28 +878,28 @@
 #define ifup_full_usage \
         "Usage: ifup <options> <ifaces...>\n\n" \
         "Options:\n" \
-        "\t-h, --help\t\tthis help\n" \
-        "\t-a, --all\t\tde/configure all interfaces automatically\n" \
-        "\t-i, --interfaces FILE\tuse FILE for interface definitions\n" \
-    "\t-n, --no-act\t\tprint out what would happen, but don't do it\n" \
-        "\t\t\t\t(note that this option doesn't disable mappings)\n" \
-    "\t-v, --verbose\t\tprint out what would happen before doing it\n" \
-        "\t--no-mappings\t\tdon't run any mappings\n" \
-        "\t--force\t\t\tforce de/configuration\n"
+        "\t-h\tthis help\n" \
+        "\t-a\tde/configure all interfaces automatically\n" \
+        "\t-i FILE\tuse FILE for interface definitions\n" \
+        "\t-n\tprint out what would happen, but don't do it\n" \
+        "\t\t\t(note that this option doesn't disable mappings)\n" \
+        "\t-v\tprint out what would happen before doing it\n" \
+        "\t-m\tdon't run any mappings\n" \
+        "\t-f\tforce de/configuration\n"
 
 #define ifdown_trivial_usage \
         "<-ahinv> <ifaces...>"
 #define ifdown_full_usage \
         "Usage: ifdown <options> <ifaces...>\n\n" \
         "Options:\n" \
-        "\t-h, --help\t\tthis help\n" \
-        "\t-a, --all\t\tde/configure all interfaces automatically\n" \
-        "\t-i, --interfaces FILE\tuse FILE for interface definitions\n" \
-    "\t-n, --no-act\t\tprint out what would happen, but don't do it\n" \
-        "\t\t\t\t(note that this option doesn't disable mappings)\n" \
-    "\t-v, --verbose\t\tprint out what would happen before doing it\n" \
-        "\t--no-mappings\t\tdon't run any mappings\n" \
-        "\t--force\t\t\tforce de/configuration\n"
+        "\t-h\tthis help\n" \
+        "\t-a\tde/configure all interfaces automatically\n" \
+        "\t-i FILE\tuse FILE for interface definitions\n" \
+        "\t-n\tprint out what would happen, but don't do it\n" \
+        "\t\t(note that this option doesn't disable mappings)\n" \
+        "\t-v\tprint out what would happen before doing it\n" \
+        "\t-m\tdon't run any mappings\n" \
+        "\t-f\tforce de/configuration\n"
         
 #define init_trivial_usage \
         ""
diff --git a/networking/Config.in b/networking/Config.in
index 42dd06e50..bc1178007 100644
--- a/networking/Config.in
+++ b/networking/Config.in
@@ -96,6 +96,13 @@ config CONFIG_IFUPDOWN
         help
           Please submit a patch to add help text for this item.
 
+config CONFIG_FEATURE_IFUPDOWN_IP
+        bool "  Use ip applet"
+        default n
+        depends on CONFIG_IFUPDOWN && CONFIG_IP && CONFIG_FEATURE_IP_ADDRESS && CONFIG_FEATURE_IP_LINK && CONFIG_FEATURE_IP_ROUTE
+        help
+          Please submit a patch to add help text for this item.
+
 config CONFIG_FEATURE_IFUPDOWN_IPV4
         bool "  Enable support for IPv4"
         default y
@@ -104,14 +111,14 @@ config CONFIG_FEATURE_IFUPDOWN_IPV4
           Please submit a patch to add help text for this item.
 
 config CONFIG_FEATURE_IFUPDOWN_IPV6
-        bool "  Enable support for IPv6 (requires ip command)"
+        bool "  Enable support for IPv6"
         default n
         depends on CONFIG_IFUPDOWN
         help
           Please submit a patch to add help text for this item.
 
 config CONFIG_FEATURE_IFUPDOWN_IPX
-        bool "  Enable support for IPX (requires ipx_interface command)"
+        bool "  Enable support for IPX"
         default n
         depends on CONFIG_IFUPDOWN
         help
diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index 37185327b..665e527cc 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -307,22 +307,40 @@ address_family_t addr_ipx = {
 #ifdef CONFIG_FEATURE_IFUPDOWN_IPV6
 static int loopback_up6(interface_defn_t *ifd, execfn *exec)
 {
-        if (!execute("ifconfig %iface% add ::1", ifd, exec)) {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("ip link set %iface% up", ifd, exec))
                 return(0);
-        }
+        if (!execute("ip addr add ::1 dev %iface%", ifd, exec))
+                return(0);
+#else
+        if (!execute("ifconfig %iface% add ::1", ifd, exec))
+                return(0);
+#endif
         return(1);
 }
 
 static int loopback_down6(interface_defn_t *ifd, execfn *exec)
 {
-        if (!execute("ifconfig %iface% del ::1", ifd, exec)) {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("ip link set %iface% down", ifd, exec))
                 return(0);
-        }
+#else
+        if (!execute("ifconfig %iface% del ::1", ifd, exec))
+                return(0);
+#endif
         return(1);
 }
 
 static int static_up6(interface_defn_t *ifd, execfn *exec)
 {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("ip link set %iface% up", ifd, exec))
+                return(0);
+        if (!execute("ip addr add %address%/%netmask% dev %iface%", ifd, exec))
+                return(0);
+        if (!execute("[[ ip route add ::/0 via %gateway% ]]", ifd, exec))
+                return(0);
+#else
         if (!execute("ifconfig %iface% [[media %media%]] [[hw %hwaddress%]] [[mtu %mtu%]] up", ifd, exec)) {
                 return(0);
         }
@@ -332,17 +350,24 @@ static int static_up6(interface_defn_t *ifd, execfn *exec)
         if (!execute("[[ route -A inet6 add ::/0 gw %gateway% ]]", ifd, exec)) {
                 return(0);
         }
+#endif
         return(1);
 }
 
 static int static_down6(interface_defn_t *ifd, execfn *exec)
 {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("ip link set %iface% down", ifd, exec))
+                return(0);
+#else
         if (!execute("ifconfig %iface% down", ifd, exec)) {
                 return(0);
         }
+#endif
         return(1);
 }
 
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
 static int v4tunnel_up(interface_defn_t *ifd, execfn *exec)
 {
         if (!execute("ip tunnel add %iface% mode sit remote %endpoint% [[local %local%]] [[ttl %ttl%]]", ifd, exec)) {
@@ -367,9 +392,12 @@ static int v4tunnel_down(interface_defn_t * ifd, execfn * exec)
         }
         return(1);
 }
+#endif
 
 static method_t methods6[] = {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
         { "v4tunnel", v4tunnel_up, v4tunnel_down, },
+#endif
         { "static", static_up6, static_down6, },
         { "loopback", loopback_up6, loopback_down6, },
 };
@@ -384,22 +412,44 @@ address_family_t addr_inet6 = {
 #ifdef CONFIG_FEATURE_IFUPDOWN_IPV4
 static int loopback_up(interface_defn_t *ifd, execfn *exec)
 {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("ip link set %iface% up", ifd, exec))
+                return(0);
+        if (!execute("ip addr add 127.0.0.1 dev %iface%", ifd, exec))
+                return(0);
+#else
         if (!execute("ifconfig %iface% 127.0.0.1 up", ifd, exec)) {
                 return(0);
         }
+#endif
         return(1);
 }
 
 static int loopback_down(interface_defn_t *ifd, execfn *exec)
 {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("ip -f inet addr flush dev %iface%", ifd, exec))
+                return(0);
+        if (!execute("ip link set %iface% down", ifd, exec))
+                return(0);
+#else
         if (!execute("ifconfig %iface% 127.0.0.1 down", ifd, exec)) {
                 return(0);
         }
+#endif
         return(1);
 }
 
 static int static_up(interface_defn_t *ifd, execfn *exec)
 {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("ip link set %iface% up", ifd, exec))
+                return(0);
+        if (!execute("ip addr add %address%/%netmask% dev %iface%", ifd, exec))
+                return(0);
+        if (!execute("[[ ip route add default via %gateway% dev %iface% ]]", ifd, exec))
+                return(0);
+#else
         if (!execute("ifconfig %iface% %address% netmask %netmask% [[broadcast %broadcast%]]    [[pointopoint %pointopoint%]] [[media %media%]] [[mtu %mtu%]]   [[hw %hwaddress%]] up",
                  ifd, exec)) {
                 return(0);
@@ -407,17 +457,27 @@ static int static_up(interface_defn_t *ifd, execfn *exec)
         if (!execute("[[ route add default gw %gateway% %iface% ]]", ifd, exec)) {
                 return(0);
         }
+#endif
         return(1);
 }
 
 static int static_down(interface_defn_t *ifd, execfn *exec)
 {
+#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+        if (!execute("[[ ip route del default via %gateway% dev %iface% ]]", ifd, exec))
+                return(0);
+        if (!execute("ip -f inet addr flush dev %iface%", ifd, exec))
+                return(0);
+        if (!execute("ip link set %iface% down", ifd, exec))
+                return(0);
+#else
         if (!execute("[[ route del default gw %gateway% %iface% ]]", ifd, exec)) {
                 return(0);
         }
         if (!execute("ifconfig %iface% down", ifd, exec)) {
                 return(0);
         }
+#endif
         return(1);
 }
 
@@ -936,7 +996,6 @@ static int doit(char *str)
                 case 0:         /* child */
                         execle("/bin/sh", "/bin/sh", "-c", str, NULL, environ);
                         exit(127);
-                default:                /* parent */
                 }
                 waitpid(child, &status, 0);
                 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
diff --git a/networking/libiproute/ipaddress.c b/networking/libiproute/ipaddress.c
index 2821f2e8d..77368fb3c 100644
--- a/networking/libiproute/ipaddress.c
+++ b/networking/libiproute/ipaddress.c
@@ -42,6 +42,10 @@ static struct
         int flags, flagmask;
         int up;
         char *label;
+        int flushed;
+        char *flushb;
+        int flushp;
+        int flushe;
         struct rtnl_handle *rth;
 } filter;
 
@@ -191,6 +195,16 @@ static int print_linkinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg
         return 0;
 }
 
+static int flush_update(void)
+{
+        if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
+                perror("Failed to send flush request\n");
+                return -1;
+        }
+        filter.flushp = 0;
+        return 0;
+}
+
 static int print_addrinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 {
         FILE *fp = (FILE*)arg;
@@ -208,6 +222,9 @@ static int print_addrinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg
                 return -1;
         }
 
+        if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
+                return 0;
+
         memset(rta_tb, 0, sizeof(rta_tb));
         parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
 
@@ -242,6 +259,22 @@ static int print_addrinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg
                 }
         }
 
+        if (filter.flushb) {
+                struct nlmsghdr *fn;
+                if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
+                        if (flush_update())
+                                return -1;
+                }
+                fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
+                memcpy(fn, n, n->nlmsg_len);
+                fn->nlmsg_type = RTM_DELADDR;
+                fn->nlmsg_flags = NLM_F_REQUEST;
+                fn->nlmsg_seq = ++filter.rth->seq;
+                filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
+                filter.flushed++;
+                return 0;
+        }
+
         if (n->nlmsg_type == RTM_DELADDR)
                 fprintf(fp, "Deleted ");
 
@@ -382,7 +415,7 @@ static void ipaddr_reset_filter(int _oneline)
         filter.oneline = _oneline;
 }
 
-extern int ipaddr_list(int argc, char **argv)
+extern int ipaddr_list_or_flush(int argc, char **argv, int flush)
 {
         const char *option[] = { "to", "scope", "up", "label", "dev", 0 };
         struct nlmsg_list *linfo = NULL;
@@ -398,6 +431,17 @@ extern int ipaddr_list(int argc, char **argv)
         if (filter.family == AF_UNSPEC)
                 filter.family = preferred_family;
 
+        if (flush) {
+                if (argc <= 0) {
+                        fprintf(stderr, "Flush requires arguments.\n");
+                        return -1;
+                }
+                if (filter.family == AF_PACKET) {
+                        fprintf(stderr, "Cannot flush link addresses.\n");
+                        return -1;
+                }
+        }
+
         while (argc > 0) {
                 const unsigned short option_num = compare_string_array(option, *argv);
                 switch (option_num) {
@@ -461,6 +505,37 @@ extern int ipaddr_list(int argc, char **argv)
                 }
         }
 
+        if (flush) {
+                int round = 0;
+                char flushb[4096-512];
+
+                filter.flushb = flushb;
+                filter.flushp = 0;
+                filter.flushe = sizeof(flushb);
+                filter.rth = &rth;
+
+                for (;;) {
+                        if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
+                                perror("Cannot send dump request");
+                                exit(1);
+                        }
+                        filter.flushed = 0;
+                        if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) {
+                                fprintf(stderr, "Flush terminated\n");
+                                exit(1);
+                        }
+                        if (filter.flushed == 0) {
+                                if (round == 0)
+                                        fprintf(stderr, "Nothing to flush.\n");
+                                fflush(stdout);
+                                return 0;
+                        }
+                        round++;
+                        if (flush_update() < 0)
+                                exit(1);
+                }
+        }
+
         if (filter.family != AF_PACKET) {
                 if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
                         perror_msg_and_die("Cannot send dump request");
@@ -727,7 +802,7 @@ static int ipaddr_modify(int cmd, int argc, char **argv)
 
 extern int do_ipaddr(int argc, char **argv)
 {
-        const char *commands[] = { "add", "delete", "list", "show", "lst", 0 };
+        const char *commands[] = { "add", "delete", "list", "show", "lst", "flush", 0 };
         unsigned short command_num = 2;
 
         if (*argv) {
@@ -741,7 +816,9 @@ extern int do_ipaddr(int argc, char **argv)
                 case 2: /* list */
                 case 3: /* show */
                 case 4: /* lst */
-                        return ipaddr_list(argc-1, argv+1);
+                        return ipaddr_list_or_flush(argc-1, argv+1, 0);
+                case 5: /* flush */
+                        return ipaddr_list_or_flush(argc-1, argv+1, 1);
         }
         error_msg_and_die("Unknown command %s", *argv);
 }
diff --git a/networking/libiproute/iplink.c b/networking/libiproute/iplink.c
index ef4d6b9a5..3b2f4dac1 100644
--- a/networking/libiproute/iplink.c
+++ b/networking/libiproute/iplink.c
@@ -334,7 +334,7 @@ static int ipaddr_list_link(int argc, char **argv)
 {
         preferred_family = AF_PACKET;
         do_link = 1;
-        return ipaddr_list(argc, argv);
+        return ipaddr_list_or_flush(argc, argv, 0);
 }
 
 int do_iplink(int argc, char **argv)