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-rw-r--r--examples/rtnl/Makefile.am35
-rw-r--r--examples/rtnl/rtnl-link-dump.c117
-rw-r--r--examples/rtnl/rtnl-link-dump2.c108
-rw-r--r--examples/rtnl/rtnl-link-dump3.c108
-rw-r--r--examples/rtnl/rtnl-link-event.c100
-rw-r--r--examples/rtnl/rtnl-link-set.c88
-rw-r--r--examples/rtnl/rtnl-route-add.c99
-rw-r--r--examples/rtnl/rtnl-route-dump.c247
8 files changed, 902 insertions, 0 deletions
diff --git a/examples/rtnl/Makefile.am b/examples/rtnl/Makefile.am
new file mode 100644
index 0000000..9f0600d
--- /dev/null
+++ b/examples/rtnl/Makefile.am
@@ -0,0 +1,35 @@
+include $(top_srcdir)/Make_global.am
+
+check_PROGRAMS = rtnl-link-dump rtnl-link-dump2 rtnl-link-dump3 \
+ rtnl-link-event \
+ rtnl-link-set \
+ rtnl-route-add \
+ rtnl-route-dump
+
+rtnl_link_dump_SOURCES = rtnl-link-dump.c
+rtnl_link_dump_LDADD = ../../src/libmnl.la
+rtnl_link_dump_LDFLAGS = -dynamic -ldl
+
+rtnl_link_dump2_SOURCES = rtnl-link-dump2.c
+rtnl_link_dump2_LDADD = ../../src/libmnl.la
+rtnl_link_dump2_LDFLAGS = -dynamic -ldl
+
+rtnl_link_dump3_SOURCES = rtnl-link-dump3.c
+rtnl_link_dump3_LDADD = ../../src/libmnl.la
+rtnl_link_dump3_LDFLAGS = -dynamic -ldl
+
+rtnl_route_add_SOURCES = rtnl-route-add.c
+rtnl_route_add_LDADD = ../../src/libmnl.la
+rtnl_route_add_LDFLAGS = -dynamic -ldl
+
+rtnl_link_event_SOURCES = rtnl-link-event.c
+rtnl_link_event_LDADD = ../../src/libmnl.la
+rtnl_link_event_LDFLAGS = -dynamic -ldl
+
+rtnl_link_set_SOURCES = rtnl-link-set.c
+rtnl_link_set_LDADD = ../../src/libmnl.la
+rtnl_link_set_LDFLAGS = -dynamic -ldl
+
+rtnl_route_dump_SOURCES = rtnl-route-dump.c
+rtnl_route_dump_LDADD = ../../src/libmnl.la
+rtnl_route_dump_LDFLAGS = -dynamic -ldl
diff --git a/examples/rtnl/rtnl-link-dump.c b/examples/rtnl/rtnl-link-dump.c
new file mode 100644
index 0000000..8bce803
--- /dev/null
+++ b/examples/rtnl/rtnl-link-dump.c
@@ -0,0 +1,117 @@
+/*
+ * (C) 2009-2010 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/if.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+
+static int data_attr_cb(const struct nlattr *attr, void *data)
+{
+ const struct nlattr **tb = (const struct nlattr **)data;
+ int type = mnl_attr_get_type(attr);
+
+ /* skip unsupported attribute in user-space */
+ if (mnl_attr_type_valid(attr, IFLA_MAX) < 0)
+ return MNL_CB_OK;
+
+ switch(type) {
+ case IFLA_MTU:
+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ break;
+ case IFLA_IFNAME:
+ if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) {
+ perror("mnl_attr_validate2");
+ return MNL_CB_ERROR;
+ }
+ break;
+ }
+ tb[type] = attr;
+ return MNL_CB_OK;
+}
+
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct nlattr *tb[IFLA_MAX+1] = {};
+ struct ifinfomsg *ifm = mnl_nlmsg_get_payload(nlh);
+
+ printf("index=%d type=%d flags=%d family=%d ",
+ ifm->ifi_index, ifm->ifi_type,
+ ifm->ifi_flags, ifm->ifi_family);
+
+ if (ifm->ifi_flags & IFF_RUNNING)
+ printf("[RUNNING] ");
+ else
+ printf("[NOT RUNNING] ");
+
+ mnl_attr_parse(nlh, sizeof(*ifm), data_attr_cb, tb);
+ if (tb[IFLA_MTU]) {
+ printf("mtu=%d ", mnl_attr_get_u32(tb[IFLA_MTU]));
+ }
+ if (tb[IFLA_IFNAME]) {
+ printf("name=%s", mnl_attr_get_str(tb[IFLA_IFNAME]));
+ }
+ printf("\n");
+ return MNL_CB_OK;
+}
+
+int main()
+{
+ struct mnl_socket *nl;
+ char buf[getpagesize()];
+ struct nlmsghdr *nlh;
+ struct rtgenmsg *rt;
+ int ret;
+ unsigned int seq, portid;
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = RTM_GETLINK;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ nlh->nlmsg_seq = seq = time(NULL);
+ rt = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtgenmsg));
+ rt->rtgen_family = AF_PACKET;
+
+ nl = mnl_socket_open(NETLINK_ROUTE);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+ portid = mnl_socket_get_portid(nl);
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_send");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ while (ret > 0) {
+ ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
+ if (ret <= MNL_CB_STOP)
+ break;
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ }
+ if (ret == -1) {
+ perror("error");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
diff --git a/examples/rtnl/rtnl-link-dump2.c b/examples/rtnl/rtnl-link-dump2.c
new file mode 100644
index 0000000..ac3a6be
--- /dev/null
+++ b/examples/rtnl/rtnl-link-dump2.c
@@ -0,0 +1,108 @@
+/*
+ * (C) 2009-2010 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/if.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+
+static int data_attr_cb(const struct nlattr *attr, void *data)
+{
+ /* skip unsupported attribute in user-space */
+ if (mnl_attr_type_valid(attr, IFLA_MAX) < 0)
+ return MNL_CB_OK;
+
+ switch(mnl_attr_get_type(attr)) {
+ case IFLA_MTU:
+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ printf("mtu=%d ", mnl_attr_get_u32(attr));
+ break;
+ case IFLA_IFNAME:
+ if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) {
+ perror("mnl_attr_validate2");
+ return MNL_CB_ERROR;
+ }
+ printf("name=%s ", mnl_attr_get_str(attr));
+ break;
+ }
+ return MNL_CB_OK;
+}
+
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct ifinfomsg *ifm = mnl_nlmsg_get_payload(nlh);
+
+ printf("index=%d type=%d flags=%d family=%d ",
+ ifm->ifi_index, ifm->ifi_type,
+ ifm->ifi_flags, ifm->ifi_family);
+
+ if (ifm->ifi_flags & IFF_RUNNING)
+ printf("[RUNNING] ");
+ else
+ printf("[NOT RUNNING] ");
+
+ mnl_attr_parse(nlh, sizeof(*ifm), data_attr_cb, NULL);
+ printf("\n");
+ return MNL_CB_OK;
+}
+
+int main()
+{
+ struct mnl_socket *nl;
+ char buf[getpagesize()];
+ struct nlmsghdr *nlh;
+ struct rtgenmsg *rt;
+ int ret;
+ unsigned int seq, portid;
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = RTM_GETLINK;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ nlh->nlmsg_seq = seq = time(NULL);
+ rt = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtgenmsg));
+ rt->rtgen_family = AF_PACKET;
+
+ nl = mnl_socket_open(NETLINK_ROUTE);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+ portid = mnl_socket_get_portid(nl);
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_send");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ while (ret > 0) {
+ ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
+ if (ret <= MNL_CB_STOP)
+ break;
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ }
+ if (ret == -1) {
+ perror("error");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
diff --git a/examples/rtnl/rtnl-link-dump3.c b/examples/rtnl/rtnl-link-dump3.c
new file mode 100644
index 0000000..6d06d7c
--- /dev/null
+++ b/examples/rtnl/rtnl-link-dump3.c
@@ -0,0 +1,108 @@
+/*
+ * (C) 2009-2010 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/if.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct ifinfomsg *ifm = mnl_nlmsg_get_payload(nlh);
+ struct nlattr *attr;
+
+ printf("index=%d type=%d flags=%d family=%d ",
+ ifm->ifi_index, ifm->ifi_type,
+ ifm->ifi_flags, ifm->ifi_family);
+
+ if (ifm->ifi_flags & IFF_RUNNING)
+ printf("[RUNNING] ");
+ else
+ printf("[NOT RUNNING] ");
+
+ mnl_attr_for_each(attr, nlh, sizeof(*ifm)) {
+ int type = mnl_attr_get_type(attr);
+
+ /* skip unsupported attribute in user-space */
+ if (mnl_attr_type_valid(attr, IFLA_MAX) < 0)
+ continue;
+
+ switch(type) {
+ case IFLA_MTU:
+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ printf("mtu=%d ", mnl_attr_get_u32(attr));
+ break;
+ case IFLA_IFNAME:
+ if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ printf("name=%s ", mnl_attr_get_str(attr));
+ break;
+ }
+ }
+ printf("\n");
+
+ return MNL_CB_OK;
+}
+
+int main()
+{
+ struct mnl_socket *nl;
+ char buf[getpagesize()];
+ struct nlmsghdr *nlh;
+ struct rtgenmsg *rt;
+ int ret;
+ unsigned int seq, portid;
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = RTM_GETLINK;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ nlh->nlmsg_seq = seq = time(NULL);
+ rt = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtgenmsg));
+ rt->rtgen_family = AF_PACKET;
+
+ nl = mnl_socket_open(NETLINK_ROUTE);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+ portid = mnl_socket_get_portid(nl);
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_send");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ while (ret > 0) {
+ ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
+ if (ret <= MNL_CB_STOP)
+ break;
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ }
+ if (ret == -1) {
+ perror("error");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
diff --git a/examples/rtnl/rtnl-link-event.c b/examples/rtnl/rtnl-link-event.c
new file mode 100644
index 0000000..aa51a1e
--- /dev/null
+++ b/examples/rtnl/rtnl-link-event.c
@@ -0,0 +1,100 @@
+/*
+ * (C) 2009-2010 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/if.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+
+static int data_attr_cb(const struct nlattr *attr, void *data)
+{
+ const struct nlattr **tb = (const struct nlattr **)data;
+ int type = mnl_attr_get_type(attr);
+
+ /* skip unsupported attribute in user-space */
+ if (mnl_attr_type_valid(attr, IFLA_MAX) < 0)
+ return MNL_CB_OK;
+
+ switch(type) {
+ case IFLA_MTU:
+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ break;
+ case IFLA_IFNAME:
+ if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) {
+ perror("mnl_attr_validate2");
+ return MNL_CB_ERROR;
+ }
+ break;
+ }
+ tb[type] = attr;
+ return MNL_CB_OK;
+}
+
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct nlattr *tb[IFLA_MAX+1] = {};
+ struct ifinfomsg *ifm = mnl_nlmsg_get_payload(nlh);
+
+ printf("index=%d type=%d flags=%d family=%d ",
+ ifm->ifi_index, ifm->ifi_type,
+ ifm->ifi_flags, ifm->ifi_family);
+
+ if (ifm->ifi_flags & IFF_RUNNING)
+ printf("[RUNNING] ");
+ else
+ printf("[NOT RUNNING] ");
+
+ mnl_attr_parse(nlh, sizeof(*ifm), data_attr_cb, tb);
+ if (tb[IFLA_MTU]) {
+ printf("mtu=%d ", mnl_attr_get_u32(tb[IFLA_MTU]));
+ }
+ if (tb[IFLA_IFNAME]) {
+ printf("name=%s", mnl_attr_get_str(tb[IFLA_IFNAME]));
+ }
+ printf("\n");
+ return MNL_CB_OK;
+}
+
+int main()
+{
+ struct mnl_socket *nl;
+ char buf[getpagesize()];
+ int ret;
+
+ nl = mnl_socket_open(NETLINK_ROUTE);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, RTMGRP_LINK, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ while (ret > 0) {
+ ret = mnl_cb_run(buf, ret, 0, 0, data_cb, NULL);
+ if (ret <= 0)
+ break;
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ }
+ if (ret == -1) {
+ perror("error");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
diff --git a/examples/rtnl/rtnl-link-set.c b/examples/rtnl/rtnl-link-set.c
new file mode 100644
index 0000000..d5cf9b1
--- /dev/null
+++ b/examples/rtnl/rtnl-link-set.c
@@ -0,0 +1,88 @@
+/*
+ * (C) 2009-2010 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <time.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/if.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+
+int main(int argc, char *argv[])
+{
+ struct mnl_socket *nl;
+ char buf[getpagesize()];
+ struct nlmsghdr *nlh;
+ struct ifinfomsg *ifm;
+ int ret;
+ unsigned int seq, portid, change = 0, flags = 0;
+
+ if (argc != 3) {
+ printf("Usage: %s [ifname] [up|down]\n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ if (strncasecmp(argv[2], "up", strlen("up")) == 0) {
+ change |= IFF_UP;
+ flags |= IFF_UP;
+ } else if (strncasecmp(argv[2], "down", strlen("down")) == 0) {
+ change |= IFF_UP;
+ flags &= ~IFF_UP;
+ } else {
+ fprintf(stderr, "%s is not `up' nor `down'\n", argv[2]);
+ exit(EXIT_FAILURE);
+ }
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = RTM_NEWLINK;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
+ nlh->nlmsg_seq = seq = time(NULL);
+ ifm = mnl_nlmsg_put_extra_header(nlh, sizeof(*ifm));
+ ifm->ifi_family = AF_UNSPEC;
+ ifm->ifi_change = change;
+ ifm->ifi_flags = flags;
+
+ mnl_attr_put_str(nlh, IFLA_IFNAME, argv[1]);
+
+ nl = mnl_socket_open(NETLINK_ROUTE);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+ portid = mnl_socket_get_portid(nl);
+
+ mnl_nlmsg_fprintf(stdout, nlh);
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_send");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ if (ret == -1) {
+ perror("read");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
+ if (ret == -1){
+ perror("callback");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
diff --git a/examples/rtnl/rtnl-route-add.c b/examples/rtnl/rtnl-route-add.c
new file mode 100644
index 0000000..1f2d1a0
--- /dev/null
+++ b/examples/rtnl/rtnl-route-add.c
@@ -0,0 +1,99 @@
+/*
+ * (C) 2009-2010 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <strings.h>
+#include <net/if.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+
+int main(int argc, char *argv[])
+{
+ if (argc <= 3) {
+ printf("Usage: %s iface destination cidr [gateway]\n", argv[0]);
+ printf("Example: %s eth0 10.0.1.12 32 10.0.1.11\n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ int iface;
+ iface = if_nametoindex(argv[1]);
+ if (iface == 0) {
+ printf("Bad interface name\n");
+ exit(EXIT_FAILURE);
+ }
+
+ in_addr_t dst;
+ if (!inet_pton(AF_INET, argv[2], &dst)) {
+ printf("Bad destination\n");
+ exit(EXIT_FAILURE);
+ }
+
+ uint32_t mask;
+ if (sscanf(argv[3], "%u", &mask) == 0) {
+ printf("Bad CIDR\n");
+ exit(EXIT_FAILURE);
+ }
+
+ in_addr_t gw;
+ if (argc >= 5 && !inet_pton(AF_INET, argv[4], &gw)) {
+ printf("Bad gateway\n");
+ exit(EXIT_FAILURE);
+ }
+
+ struct mnl_socket *nl;
+ char buf[getpagesize()];
+ struct nlmsghdr *nlh;
+ struct rtmsg *rtm;
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = RTM_NEWROUTE;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
+ nlh->nlmsg_seq = time(NULL);
+
+ rtm = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtmsg));
+ rtm->rtm_family = AF_INET;
+ rtm->rtm_dst_len = mask;
+ rtm->rtm_src_len = 0;
+ rtm->rtm_tos = 0;
+ rtm->rtm_protocol = RTPROT_BOOT;
+ rtm->rtm_table = RT_TABLE_MAIN;
+ rtm->rtm_type = RTN_UNICAST;
+ /* is there any gateway? */
+ rtm->rtm_scope = (argc == 4) ? RT_SCOPE_LINK : RT_SCOPE_UNIVERSE;
+ rtm->rtm_flags = 0;
+
+ mnl_attr_put_u32(nlh, RTA_DST, dst);
+ mnl_attr_put_u32(nlh, RTA_OIF, iface);
+ if (argc >= 5)
+ mnl_attr_put_u32(nlh, RTA_GATEWAY, gw);
+
+ nl = mnl_socket_open(NETLINK_ROUTE);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_send");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
diff --git a/examples/rtnl/rtnl-route-dump.c b/examples/rtnl/rtnl-route-dump.c
new file mode 100644
index 0000000..34c95cf
--- /dev/null
+++ b/examples/rtnl/rtnl-route-dump.c
@@ -0,0 +1,247 @@
+/*
+ * (C) 2009-2010 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <arpa/inet.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/if.h>
+#include <linux/if_link.h>
+#include <linux/rtnetlink.h>
+
+static int data_attr_cb2(const struct nlattr *attr, void *data)
+{
+ /* skip unsupported attribute in user-space */
+ if (mnl_attr_type_valid(attr, RTAX_MAX) < 0)
+ return MNL_CB_OK;
+
+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ return MNL_CB_OK;
+}
+
+static void attributes_show_ipv4(struct nlattr *tb[])
+{
+ if (tb[RTA_TABLE]) {
+ printf("table=%u ", mnl_attr_get_u32(tb[RTA_TABLE]));
+ }
+ if (tb[RTA_DST]) {
+ struct in_addr *addr = mnl_attr_get_payload(tb[RTA_DST]);
+ printf("dst=%s ", inet_ntoa(*addr));
+ }
+ if (tb[RTA_SRC]) {
+ struct in_addr *addr = mnl_attr_get_payload(tb[RTA_SRC]);
+ printf("src=%s ", inet_ntoa(*addr));
+ }
+ if (tb[RTA_OIF]) {
+ printf("oif=%u ", mnl_attr_get_u32(tb[RTA_OIF]));
+ }
+ if (tb[RTA_FLOW]) {
+ printf("flow=%u ", mnl_attr_get_u32(tb[RTA_FLOW]));
+ }
+ if (tb[RTA_PREFSRC]) {
+ struct in_addr *addr = mnl_attr_get_payload(tb[RTA_PREFSRC]);
+ printf("prefsrc=%s ", inet_ntoa(*addr));
+ }
+ if (tb[RTA_GATEWAY]) {
+ struct in_addr *addr = mnl_attr_get_payload(tb[RTA_GATEWAY]);
+ printf("gw=%s ", inet_ntoa(*addr));
+ }
+ if (tb[RTA_METRICS]) {
+ int i;
+ struct nlattr *tbx[RTAX_MAX+1] = {};
+
+ mnl_attr_parse_nested(tb[RTA_METRICS], data_attr_cb2, tbx);
+
+ for (i=0; i<RTAX_MAX; i++) {
+ if (tbx[i]) {
+ printf("metrics[%d]=%u ",
+ i, mnl_attr_get_u32(tbx[i]));
+ }
+ }
+ }
+ printf("\n");
+}
+
+static int data_attr_cb(const struct nlattr *attr, void *data)
+{
+ const struct nlattr **tb = (const struct nlattr **)data;
+ int type = mnl_attr_get_type(attr);
+
+ /* skip unsupported attribute in user-space */
+ if (mnl_attr_type_valid(attr, RTA_MAX) < 0)
+ return MNL_CB_OK;
+
+ switch(type) {
+ case RTA_TABLE:
+ case RTA_DST:
+ case RTA_SRC:
+ case RTA_OIF:
+ case RTA_FLOW:
+ case RTA_PREFSRC:
+ case RTA_GATEWAY:
+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ break;
+ case RTA_METRICS:
+ if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ break;
+ }
+ tb[type] = attr;
+ return MNL_CB_OK;
+}
+
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct nlattr *tb[RTA_MAX+1] = {};
+ struct rtmsg *rm = mnl_nlmsg_get_payload(nlh);
+
+ /* protocol family = AF_INET | AF_INET6 */
+ printf("family=%u ", rm->rtm_family);
+
+ /* destination CIDR, eg. 24 or 32 for IPv4 */
+ printf("dst_len=%u ", rm->rtm_dst_len);
+
+ /* source CIDR */
+ printf("src_len=%u ", rm->rtm_src_len);
+
+ /* type of service (TOS), eg. 0 */
+ printf("tos=%u ", rm->rtm_tos);
+
+ /* table id:
+ * RT_TABLE_UNSPEC = 0
+ *
+ * ... user defined values ...
+ *
+ * RT_TABLE_COMPAT = 252
+ * RT_TABLE_DEFAULT = 253
+ * RT_TABLE_MAIN = 254
+ * RT_TABLE_LOCAL = 255
+ * RT_TABLE_MAX = 0xFFFFFFFF
+ *
+ * Synonimous attribute: RTA_TABLE.
+ */
+ printf("table=%u ", rm->rtm_table);
+
+ /* type:
+ * RTN_UNSPEC = 0
+ * RTN_UNICAST = 1
+ * RTN_LOCAL = 2
+ * RTN_BROADCAST = 3
+ * RTN_ANYCAST = 4
+ * RTN_MULTICAST = 5
+ * RTN_BLACKHOLE = 6
+ * RTN_UNREACHABLE = 7
+ * RTN_PROHIBIT = 8
+ * RTN_THROW = 9
+ * RTN_NAT = 10
+ * RTN_XRESOLVE = 11
+ * __RTN_MAX = 12
+ */
+ printf("type=%u ", rm->rtm_type);
+
+ /* scope:
+ * RT_SCOPE_UNIVERSE = 0 : everywhere in the universe
+ *
+ * ... user defined values ...
+ *
+ * RT_SCOPE_SITE = 200
+ * RT_SCOPE_LINK = 253 : destination attached to link
+ * RT_SCOPE_HOST = 254 : local address
+ * RT_SCOPE_NOWHERE = 255 : not existing destination
+ */
+ printf("scope=%u ", rm->rtm_scope);
+
+ /* protocol:
+ * RTPROT_UNSPEC = 0
+ * RTPROT_REDIRECT = 1
+ * RTPROT_KERNEL = 2 : route installed by kernel
+ * RTPROT_BOOT = 3 : route installed during boot
+ * RTPROT_STATIC = 4 : route installed by administrator
+ *
+ * Values >= RTPROT_STATIC are not interpreted by kernel, they are
+ * just user-defined.
+ */
+ printf("proto=%u ", rm->rtm_protocol);
+
+ /* flags:
+ * RTM_F_NOTIFY = 0x100: notify user of route change
+ * RTM_F_CLONED = 0x200: this route is cloned
+ * RTM_F_EQUALIZE = 0x400: Multipath equalizer: NI
+ * RTM_F_PREFIX = 0x800: Prefix addresses
+ */
+ printf("flags=%x\n", rm->rtm_flags);
+
+ mnl_attr_parse(nlh, sizeof(*rm), data_attr_cb, tb);
+
+ switch(rm->rtm_family) {
+ case AF_INET:
+ attributes_show_ipv4(tb);
+ break;
+ }
+
+ return MNL_CB_OK;
+}
+
+int main()
+{
+ struct mnl_socket *nl;
+ char buf[getpagesize()];
+ struct nlmsghdr *nlh;
+ struct rtmsg *rtm;
+ int ret;
+ unsigned int seq, portid;
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = RTM_GETROUTE;
+ nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ nlh->nlmsg_seq = seq = time(NULL);
+ rtm = mnl_nlmsg_put_extra_header(nlh, sizeof(struct rtmsg));
+ rtm->rtm_family = AF_INET;
+
+ nl = mnl_socket_open(NETLINK_ROUTE);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+ portid = mnl_socket_get_portid(nl);
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_send");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ while (ret > 0) {
+ ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
+ if (ret <= MNL_CB_STOP)
+ break;
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ }
+ if (ret == -1) {
+ perror("error");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}