Adding ARP example in order to dump the info in the form:
index= family= dst= lladdr=
state=
Signed-off-by: Laura Garcia Liebana
---
examples/rtnl/Makefile.am | 6 +-
examples/rtnl/rtnl-arp-dump.c | 161 ++
2 files changed, 166 insertions(+), 1 deletion(-)
create mode 100644 examples/rtnl/rtnl-arp-dump.c
diff --git a/examples/rtnl/Makefile.am b/examples/rtnl/Makefile.am
index 24769b6..e56365c 100644
--- a/examples/rtnl/Makefile.am
+++ b/examples/rtnl/Makefile.am
@@ -6,7 +6,8 @@ check_PROGRAMS = rtnl-addr-dump \
rtnl-link-set \
rtnl-route-add \
rtnl-route-dump \
-rtnl-route-event
+rtnl-route-event \
+rtnl-arp-dump
rtnl_addr_dump_SOURCES = rtnl-addr-dump.c
rtnl_addr_dump_LDADD = ../../src/libmnl.la
@@ -34,3 +35,6 @@ rtnl_route_dump_LDADD = ../../src/libmnl.la
rtnl_route_event_SOURCES = rtnl-route-event.c
rtnl_route_event_LDADD = ../../src/libmnl.la
+
+rtnl_arp_dump_SOURCES = rtnl-arp-dump.c
+rtnl_arp_dump_LDADD = ../../src/libmnl.la
diff --git a/examples/rtnl/rtnl-arp-dump.c b/examples/rtnl/rtnl-arp-dump.c
new file mode 100644
index 000..fc0f205
--- /dev/null
+++ b/examples/rtnl/rtnl-arp-dump.c
@@ -0,0 +1,161 @@
+/* This example is placed in the public domain. */
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+
+static int data_attr_cb(const struct nlattr *attr, void *data)
+{
+ const struct nlattr **tb = data;
+ int type = mnl_attr_get_type(attr);
+
+ /* skip unsupported attribute in user-space */
+ if (mnl_attr_type_valid(attr, IFA_MAX) < 0)
+ return MNL_CB_OK;
+
+ switch(type) {
+ case NDA_DST:
+ if (mnl_attr_validate(attr, MNL_TYPE_BINARY) < 0) {
+ perror("mnl_attr_validate");
+ return MNL_CB_ERROR;
+ }
+ break;
+ case NDA_LLADDR:
+ if (mnl_attr_validate(attr, MNL_TYPE_BINARY) < 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[IFA_MAX + 1] = {};
+ struct ndmsg *ndm = mnl_nlmsg_get_payload(nlh);
+
+ printf("index=%d family=%d ", ndm->ndm_ifindex, ndm->ndm_family);
+
+ mnl_attr_parse(nlh, sizeof(*ndm), data_attr_cb, tb);
+ printf("dst=");
+ if (tb[NDA_DST]) {
+ void *addr = mnl_attr_get_payload(tb[NDA_DST]);
+ char out[INET6_ADDRSTRLEN];
+
+ if (inet_ntop(ndm->ndm_family, addr, out, sizeof(out)))
+ printf("%s ", out);
+ }
+
+ mnl_attr_parse(nlh, sizeof(*ndm), data_attr_cb, tb);
+ printf("lladdr=");
+ if (tb[NDA_LLADDR]) {
+ void *addr = mnl_attr_get_payload(tb[NDA_LLADDR]);
+ unsigned char lladdr[6] = {0};
+
+ if (memcpy(&lladdr, addr, 6))
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ", lladdr[0],
lladdr[1], lladdr[2], lladdr[3], lladdr[4], lladdr[5]);
+ }
+
+ printf("state=");
+ switch(ndm->ndm_state) {
+ case NUD_INCOMPLETE:
+ printf("incomplete ");
+ break;
+ case NUD_REACHABLE:
+ printf("reachable ");
+ break;
+ case NUD_STALE:
+ printf("stale ");
+ break;
+ case NUD_DELAY:
+ printf("delay ");
+ break;
+ case NUD_PROBE:
+ printf("probe ");
+ break;
+ case NUD_FAILED:
+ printf("failed ");
+ break;
+ case NUD_NOARP:
+ printf("noarp ");
+ break;
+ case NUD_PERMANENT:
+ printf("permanent ");
+ break;
+ default:
+ printf("%d ", ndm->ndm_state);
+ break;
+ }
+
+ printf("\n");
+ return MNL_CB_OK;
+}
+
+int main(int argc, char *argv[])
+{
+ struct mnl_socket *nl;
+ char buf[MNL_SOCKET_BUFFER_SIZE];
+ struct nlmsghdr *nlh;
+ struct rtgenmsg *rt;
+ int ret;
+ unsigned int seq, portid;
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s \n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = RTM_GETNEIGH;
+ 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));
+ if (strcmp(argv[1], "inet") == 0)
+ rt->rtgen_family = AF_INET;
+ else if (strcmp(argv[1], "inet6") == 0)
+ rt->rtgen_family = AF_INET6;
+
+