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-rw-r--r--examples/rtnl/rtnl-link-dump2.c108
1 files changed, 108 insertions, 0 deletions
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;
+}