1 #include <net/if.h>
2 #include <errno.h>
3
4 #include <netlink/genl/genl.h>
5 #include <netlink/genl/family.h>
6 #include <netlink/genl/ctrl.h>
7 #include <netlink/msg.h>
8 #include <netlink/attr.h>
9
10 #include "nl80211.h"
11 #include "iw.h"
12
13 SECTION(mpp);
14
print_mpp_handler(struct nl_msg * msg,void * arg)15 static int print_mpp_handler(struct nl_msg *msg, void *arg)
16 {
17 struct nlattr *tb[NL80211_ATTR_MAX + 1];
18 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
19 char dst[20], next_hop[20], dev[20];
20
21 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
22 genlmsg_attrlen(gnlh, 0), NULL);
23
24 /*
25 * TODO: validate the interface and mac address!
26 * Otherwise, there's a race condition as soon as
27 * the kernel starts sending mpath notifications.
28 */
29
30 mac_addr_n2a(dst, nla_data(tb[NL80211_ATTR_MAC]));
31 mac_addr_n2a(next_hop, nla_data(tb[NL80211_ATTR_MPATH_NEXT_HOP]));
32 if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
33 printf("%s %s %s\n", dst, next_hop, dev);
34
35 return NL_SKIP;
36 }
37
handle_mpp_get(struct nl80211_state * state,struct nl_msg * msg,int argc,char ** argv,enum id_input id)38 static int handle_mpp_get(struct nl80211_state *state,
39 struct nl_msg *msg,
40 int argc, char **argv,
41 enum id_input id)
42 {
43 unsigned char dst[ETH_ALEN];
44
45 if (argc < 1)
46 return 1;
47
48 if (mac_addr_a2n(dst, argv[0])) {
49 fprintf(stderr, "invalid mac address\n");
50 return 2;
51 }
52 argc--;
53 argv++;
54
55 if (argc)
56 return 1;
57
58 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
59
60 register_handler(print_mpp_handler, NULL);
61
62 return 0;
63 nla_put_failure:
64 return -ENOBUFS;
65 }
66 COMMAND(mpp, get, "<MAC address>",
67 NL80211_CMD_GET_MPP, 0, CIB_NETDEV, handle_mpp_get,
68 "Get information on mesh proxy path to the given node.");
69
handle_mpp_dump(struct nl80211_state * state,struct nl_msg * msg,int argc,char ** argv,enum id_input id)70 static int handle_mpp_dump(struct nl80211_state *state,
71 struct nl_msg *msg,
72 int argc, char **argv,
73 enum id_input id)
74 {
75 printf("DEST ADDR PROXY NODE IFACE\n");
76 register_handler(print_mpp_handler, NULL);
77 return 0;
78 }
79 COMMAND(mpp, dump, NULL,
80 NL80211_CMD_GET_MPP, NLM_F_DUMP, CIB_NETDEV, handle_mpp_dump,
81 "List known mesh proxy paths.");
82