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85 lines
2.0 KiB
85 lines
2.0 KiB
#include <net/if.h>
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#include <errno.h>
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#include <string.h>
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#include <netlink/genl/genl.h>
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#include <netlink/genl/family.h>
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#include <netlink/genl/ctrl.h>
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#include <netlink/msg.h>
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#include <netlink/attr.h>
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#include "nl80211.h"
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#include "iw.h"
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SECTION(mpp);
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static int print_mpp_handler(struct nl_msg *msg, void *arg)
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{
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struct nlattr *tb[NL80211_ATTR_MAX + 1];
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struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
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char dst[20], next_hop[20], dev[20];
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nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
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genlmsg_attrlen(gnlh, 0), NULL);
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/*
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* TODO: validate the interface and mac address!
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* Otherwise, there's a race condition as soon as
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* the kernel starts sending mpath notifications.
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*/
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mac_addr_n2a(dst, nla_data(tb[NL80211_ATTR_MAC]));
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mac_addr_n2a(next_hop, nla_data(tb[NL80211_ATTR_MPATH_NEXT_HOP]));
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if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
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printf("%s %s %s\n", dst, next_hop, dev);
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return NL_SKIP;
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}
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static int handle_mpp_get(struct nl80211_state *state,
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struct nl_cb *cb,
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struct nl_msg *msg,
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int argc, char **argv,
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enum id_input id)
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{
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unsigned char dst[ETH_ALEN];
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if (argc < 1)
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return 1;
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if (mac_addr_a2n(dst, argv[0])) {
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fprintf(stderr, "invalid mac address\n");
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return 2;
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}
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argc--;
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argv++;
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if (argc)
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return 1;
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NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
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nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_mpp_handler, NULL);
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return 0;
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nla_put_failure:
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return -ENOBUFS;
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}
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COMMAND(mpp, get, "<MAC address>",
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NL80211_CMD_GET_MPP, 0, CIB_NETDEV, handle_mpp_get,
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"Get information on mesh proxy path to the given node.");
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static int handle_mpp_dump(struct nl80211_state *state,
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struct nl_cb *cb,
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struct nl_msg *msg,
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int argc, char **argv,
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enum id_input id)
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{
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printf("DEST ADDR PROXY NODE IFACE\n");
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nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_mpp_handler, NULL);
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return 0;
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}
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COMMAND(mpp, dump, NULL,
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NL80211_CMD_GET_MPP, NLM_F_DUMP, CIB_NETDEV, handle_mpp_dump,
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"List known mesh proxy paths.");
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