station.c - platform/external/iw - Gitiles

 #include <net/if.h>
 #include <errno.h>
 #include <string.h>

 #include <netlink/genl/genl.h>
 #include <netlink/genl/family.h>
 #include <netlink/genl/ctrl.h>
 #include <netlink/msg.h>
 #include <netlink/attr.h>

 #include "nl80211.h"
 #include "iw.h"

 SECTION(station);

 enum plink_state {
 	LISTEN,
 	OPN_SNT,
 	OPN_RCVD,
 	CNF_RCVD,
 	ESTAB,
 	HOLDING,
 	BLOCKED
 };

 enum plink_actions {
 	PLINK_ACTION_UNDEFINED,
 	PLINK_ACTION_OPEN,
 	PLINK_ACTION_BLOCK,
 };


 static int print_sta_handler(struct nl_msg *msg, void *arg)
 {
 	struct nlattr *tb[NL80211_ATTR_MAX + 1];
 	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 	struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
 	struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
 	char mac_addr[20], state_name[10], dev[20];
 	struct nl80211_sta_flag_update *sta_flags;
 	static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
 		[NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
 		[NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
 		[NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
 		[NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
 		[NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
 		[NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
 		[NL80211_STA_INFO_T_OFFSET] = { .type = NLA_U64 },
 		[NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
 		[NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
 		[NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
 		[NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
 		[NL80211_STA_INFO_TX_RETRIES] = { .type = NLA_U32 },
 		[NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
 		[NL80211_STA_INFO_STA_FLAGS] =
 			{ .minlen = sizeof(struct nl80211_sta_flag_update) },
 	};

 	static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
 		[NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
 		[NL80211_RATE_INFO_BITRATE32] = { .type = NLA_U32 },
 		[NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
 		[NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
 		[NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
 	};

 	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 		  genlmsg_attrlen(gnlh, 0), NULL);

 	/*
 	 * TODO: validate the interface and mac address!
 	 * Otherwise, there's a race condition as soon as
 	 * the kernel starts sending station notifications.
 	 */

 	if (!tb[NL80211_ATTR_STA_INFO]) {
 		fprintf(stderr, "sta stats missing!\n");
 		return NL_SKIP;
 	}
 	if (nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
 			     tb[NL80211_ATTR_STA_INFO],
 			     stats_policy)) {
 		fprintf(stderr, "failed to parse nested attributes!\n");
 		return NL_SKIP;
 	}

 	mac_addr_n2a(mac_addr, nla_data(tb[NL80211_ATTR_MAC]));
 	if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
 	printf("Station %s (on %s)", mac_addr, dev);

 	if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
 		printf("\n\tinactive time:\t%u ms",
 			nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]));
 	if (sinfo[NL80211_STA_INFO_RX_BYTES])
 		printf("\n\trx bytes:\t%u",
 			nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]));
 	if (sinfo[NL80211_STA_INFO_RX_PACKETS])
 		printf("\n\trx packets:\t%u",
 			nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]));
 	if (sinfo[NL80211_STA_INFO_TX_BYTES])
 		printf("\n\ttx bytes:\t%u",
 			nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]));
 	if (sinfo[NL80211_STA_INFO_TX_PACKETS])
 		printf("\n\ttx packets:\t%u",
 			nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]));
 	if (sinfo[NL80211_STA_INFO_TX_RETRIES])
 		printf("\n\ttx retries:\t%u",
 			nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]));
 	if (sinfo[NL80211_STA_INFO_TX_FAILED])
 		printf("\n\ttx failed:\t%u",
 			nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]));
 	if (sinfo[NL80211_STA_INFO_SIGNAL])
 		printf("\n\tsignal:  \t%d dBm",
 			(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]));
 	if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
 		printf("\n\tsignal avg:\t%d dBm",
 			(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]));
 	if (sinfo[NL80211_STA_INFO_T_OFFSET])
 		printf("\n\tToffset:\t%lld us",
 			(unsigned long long)nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]));

 	if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
 		if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
 				     sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy)) {
 			fprintf(stderr, "failed to parse nested rate attributes!\n");
 		} else {
 			int rate = 0;
 			printf("\n\ttx bitrate:\t");
 			if (rinfo[NL80211_RATE_INFO_BITRATE32])
 				rate = nla_get_u32(rinfo[NL80211_RATE_INFO_BITRATE32]);
 			else if (rinfo[NL80211_RATE_INFO_BITRATE])
 				rate = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
 			if (rate > 0)
 				printf("%d.%d MBit/s", rate / 10, rate % 10);

 			if (rinfo[NL80211_RATE_INFO_MCS])
 				printf(" MCS %d", nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]));
 			if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
 				printf(" 40Mhz");
 			if (rinfo[NL80211_RATE_INFO_SHORT_GI])
 				printf(" short GI");
 		}
 	}

 	if (sinfo[NL80211_STA_INFO_LLID])
 		printf("\n\tmesh llid:\t%d",
 			nla_get_u16(sinfo[NL80211_STA_INFO_LLID]));
 	if (sinfo[NL80211_STA_INFO_PLID])
 		printf("\n\tmesh plid:\t%d",
 			nla_get_u16(sinfo[NL80211_STA_INFO_PLID]));
 	if (sinfo[NL80211_STA_INFO_PLINK_STATE]) {
 		switch (nla_get_u8(sinfo[NL80211_STA_INFO_PLINK_STATE])) {
 		case LISTEN:
 			strcpy(state_name, "LISTEN");
 			break;
 		case OPN_SNT:
 			strcpy(state_name, "OPN_SNT");
 			break;
 		case OPN_RCVD:
 			strcpy(state_name, "OPN_RCVD");
 			break;
 		case CNF_RCVD:
 			strcpy(state_name, "CNF_RCVD");
 			break;
 		case ESTAB:
 			strcpy(state_name, "ESTAB");
 			break;
 		case HOLDING:
 			strcpy(state_name, "HOLDING");
 			break;
 		case BLOCKED:
 			strcpy(state_name, "BLOCKED");
 			break;
 		default:
 			strcpy(state_name, "UNKNOWN");
 			break;
 		}
 		printf("\n\tmesh plink:\t%s", state_name);
 	}

 	if (sinfo[NL80211_STA_INFO_STA_FLAGS]) {
 		sta_flags = (struct nl80211_sta_flag_update *)
 			    nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]);

 		if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 			printf("\n\tauthorized:\t");
 			if (sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 				printf("yes");
 			else
 				printf("no");
 		}

 		if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 			printf("\n\tauthenticated:\t");
 			if (sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 				printf("yes");
 			else
 				printf("no");
 		}

 		if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 			printf("\n\tpreamble:\t");
 			if (sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 				printf("short");
 			else
 				printf("long");
 		}

 		if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME)) {
 			printf("\n\tWMM/WME:\t");
 			if (sta_flags->set & BIT(NL80211_STA_FLAG_WME))
 				printf("yes");
 			else
 				printf("no");
 		}

 		if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP)) {
 			printf("\n\tMFP:\t\t");
 			if (sta_flags->set & BIT(NL80211_STA_FLAG_MFP))
 				printf("yes");
 			else
 				printf("no");
 		}

 		if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 			printf("\n\tTDLS peer:\t\t");
 			if (sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 				printf("yes");
 			else
 				printf("no");
 		}
 	}

 	printf("\n");
 	return NL_SKIP;
 }

 static int handle_station_get(struct nl80211_state *state,
 			      struct nl_cb *cb,
 			      struct nl_msg *msg,
 			      int argc, char **argv,
 			      enum id_input id)
 {
 	unsigned char mac_addr[ETH_ALEN];

 	if (argc < 1)
 		return 1;

 	if (mac_addr_a2n(mac_addr, argv[0])) {
 		fprintf(stderr, "invalid mac address\n");
 		return 2;
 	}

 	argc--;
 	argv++;

 	if (argc)
 		return 1;

 	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);

 	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);

 	return 0;
  nla_put_failure:
 	return -ENOBUFS;
 }
 COMMAND(station, get, "<MAC address>",
 	NL80211_CMD_GET_STATION, 0, CIB_NETDEV, handle_station_get,
 	"Get information for a specific station.");
 COMMAND(station, del, "<MAC address>",
 	NL80211_CMD_DEL_STATION, 0, CIB_NETDEV, handle_station_get,
 	"Remove the given station entry (use with caution!)");

 static const struct cmd *station_set_plink;
 static const struct cmd *station_set_vlan;

 static const struct cmd *select_station_cmd(int argc, char **argv)
 {
 	if (argc < 2)
 		return NULL;
 	if (strcmp(argv[1], "plink_action") == 0)
 		return station_set_plink;
 	if (strcmp(argv[1], "vlan") == 0)
 		return station_set_vlan;
 	return NULL;
 }

 static int handle_station_set_plink(struct nl80211_state *state,
 			      struct nl_cb *cb,
 			      struct nl_msg *msg,
 			      int argc, char **argv,
 			      enum id_input id)
 {
 	unsigned char plink_action;
 	unsigned char mac_addr[ETH_ALEN];

 	if (argc < 3)
 		return 1;

 	if (mac_addr_a2n(mac_addr, argv[0])) {
 		fprintf(stderr, "invalid mac address\n");
 		return 2;
 	}
 	argc--;
 	argv++;

 	if (strcmp("plink_action", argv[0]) != 0)
 		return 1;
 	argc--;
 	argv++;

 	if (strcmp("open", argv[0]) == 0)
 		plink_action = PLINK_ACTION_OPEN;
 	else if (strcmp("block", argv[0]) == 0)
 		plink_action = PLINK_ACTION_BLOCK;
 	else {
 		fprintf(stderr, "plink action not supported\n");
 		return 2;
 	}
 	argc--;
 	argv++;

 	if (argc)
 		return 1;

 	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
 	NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_ACTION, plink_action);

 	return 0;
  nla_put_failure:
 	return -ENOBUFS;
 }
 COMMAND_ALIAS(station, set, "<MAC address> plink_action <open|block>",
 	NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set_plink,
 	"Set mesh peer link action for this station (peer).",
 	select_station_cmd, station_set_plink);

 static int handle_station_set_vlan(struct nl80211_state *state,
 				   struct nl_cb *cb,
 				   struct nl_msg *msg,
 				   int argc, char **argv,
 				   enum id_input id)
 {
 	unsigned char mac_addr[ETH_ALEN];
 	unsigned long sta_vlan = 0;
 	char *err = NULL;

 	if (argc < 3)
 		return 1;

 	if (mac_addr_a2n(mac_addr, argv[0])) {
 		fprintf(stderr, "invalid mac address\n");
 		return 2;
 	}
 	argc--;
 	argv++;

 	if (strcmp("vlan", argv[0]) != 0)
 		return 1;
 	argc--;
 	argv++;

 	sta_vlan = strtoul(argv[0], &err, 0);
 	if (err && *err) {
 		fprintf(stderr, "invalid vlan id\n");
 		return 2;
 	}
 	argc--;
 	argv++;

 	if (argc)
 		return 1;

 	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
 	NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, sta_vlan);

 	return 0;
  nla_put_failure:
 	return -ENOBUFS;
 }
 COMMAND_ALIAS(station, set, "<MAC address> vlan <ifindex>",
 	NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set_vlan,
 	"Set an AP VLAN for this station.",
 	select_station_cmd, station_set_vlan);


 static int handle_station_dump(struct nl80211_state *state,
 			       struct nl_cb *cb,
 			       struct nl_msg *msg,
 			       int argc, char **argv,
 			       enum id_input id)
 {
 	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);
 	return 0;
 }
 COMMAND(station, dump, NULL,
 	NL80211_CMD_GET_STATION, NLM_F_DUMP, CIB_NETDEV, handle_station_dump,
 	"List all stations known, e.g. the AP on managed interfaces");
	#include <net/if.h>
	#include <errno.h>
	#include <string.h>

	#include <netlink/genl/genl.h>
	#include <netlink/genl/family.h>
	#include <netlink/genl/ctrl.h>
	#include <netlink/msg.h>
	#include <netlink/attr.h>

	#include "nl80211.h"
	#include "iw.h"

	SECTION(station);

	enum plink_state {
	LISTEN,
	OPN_SNT,
	OPN_RCVD,
	CNF_RCVD,
	ESTAB,
	HOLDING,
	BLOCKED
	};

	enum plink_actions {
	PLINK_ACTION_UNDEFINED,
	PLINK_ACTION_OPEN,
	PLINK_ACTION_BLOCK,
	};


	static int print_sta_handler(struct nl_msg msg, void arg)
	{
	struct nlattr *tb[NL80211_ATTR_MAX + 1];
	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
	struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
	char mac_addr[20], state_name[10], dev[20];
	struct nl80211_sta_flag_update *sta_flags;
	static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
	[NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
	[NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
	[NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
	[NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
	[NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
	[NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
	[NL80211_STA_INFO_T_OFFSET] = { .type = NLA_U64 },
	[NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
	[NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
	[NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
	[NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
	[NL80211_STA_INFO_TX_RETRIES] = { .type = NLA_U32 },
	[NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
	[NL80211_STA_INFO_STA_FLAGS] =
	{ .minlen = sizeof(struct nl80211_sta_flag_update) },
	};

	static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
	[NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
	[NL80211_RATE_INFO_BITRATE32] = { .type = NLA_U32 },
	[NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
	[NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
	[NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
	};

	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
	genlmsg_attrlen(gnlh, 0), NULL);

	/*
	* TODO: validate the interface and mac address!
	* Otherwise, there's a race condition as soon as
	* the kernel starts sending station notifications.
	*/

	if (!tb[NL80211_ATTR_STA_INFO]) {
	fprintf(stderr, "sta stats missing!\n");
	return NL_SKIP;
	}
	if (nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
	tb[NL80211_ATTR_STA_INFO],
	stats_policy)) {
	fprintf(stderr, "failed to parse nested attributes!\n");
	return NL_SKIP;
	}

	mac_addr_n2a(mac_addr, nla_data(tb[NL80211_ATTR_MAC]));
	if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
	printf("Station %s (on %s)", mac_addr, dev);

	if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
	printf("\n\tinactive time:\t%u ms",
	nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]));
	if (sinfo[NL80211_STA_INFO_RX_BYTES])
	printf("\n\trx bytes:\t%u",
	nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]));
	if (sinfo[NL80211_STA_INFO_RX_PACKETS])
	printf("\n\trx packets:\t%u",
	nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]));
	if (sinfo[NL80211_STA_INFO_TX_BYTES])
	printf("\n\ttx bytes:\t%u",
	nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]));
	if (sinfo[NL80211_STA_INFO_TX_PACKETS])
	printf("\n\ttx packets:\t%u",
	nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]));
	if (sinfo[NL80211_STA_INFO_TX_RETRIES])
	printf("\n\ttx retries:\t%u",
	nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]));
	if (sinfo[NL80211_STA_INFO_TX_FAILED])
	printf("\n\ttx failed:\t%u",
	nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]));
	if (sinfo[NL80211_STA_INFO_SIGNAL])
	printf("\n\tsignal: \t%d dBm",
	(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]));
	if (sinfo[NL80211_STA_INFO_SIGNAL_AVG])
	printf("\n\tsignal avg:\t%d dBm",
	(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]));
	if (sinfo[NL80211_STA_INFO_T_OFFSET])
	printf("\n\tToffset:\t%lld us",
	(unsigned long long)nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]));

	if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
	if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
	sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy)) {
	fprintf(stderr, "failed to parse nested rate attributes!\n");
	} else {
	int rate = 0;
	printf("\n\ttx bitrate:\t");
	if (rinfo[NL80211_RATE_INFO_BITRATE32])
	rate = nla_get_u32(rinfo[NL80211_RATE_INFO_BITRATE32]);
	else if (rinfo[NL80211_RATE_INFO_BITRATE])
	rate = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
	if (rate > 0)
	printf("%d.%d MBit/s", rate / 10, rate % 10);

	if (rinfo[NL80211_RATE_INFO_MCS])
	printf(" MCS %d", nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]));
	if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
	printf(" 40Mhz");
	if (rinfo[NL80211_RATE_INFO_SHORT_GI])
	printf(" short GI");
	}
	}

	if (sinfo[NL80211_STA_INFO_LLID])
	printf("\n\tmesh llid:\t%d",
	nla_get_u16(sinfo[NL80211_STA_INFO_LLID]));
	if (sinfo[NL80211_STA_INFO_PLID])
	printf("\n\tmesh plid:\t%d",
	nla_get_u16(sinfo[NL80211_STA_INFO_PLID]));
	if (sinfo[NL80211_STA_INFO_PLINK_STATE]) {
	switch (nla_get_u8(sinfo[NL80211_STA_INFO_PLINK_STATE])) {
	case LISTEN:
	strcpy(state_name, "LISTEN");
	break;
	case OPN_SNT:
	strcpy(state_name, "OPN_SNT");
	break;
	case OPN_RCVD:
	strcpy(state_name, "OPN_RCVD");
	break;
	case CNF_RCVD:
	strcpy(state_name, "CNF_RCVD");
	break;
	case ESTAB:
	strcpy(state_name, "ESTAB");
	break;
	case HOLDING:
	strcpy(state_name, "HOLDING");
	break;
	case BLOCKED:
	strcpy(state_name, "BLOCKED");
	break;
	default:
	strcpy(state_name, "UNKNOWN");
	break;
	}
	printf("\n\tmesh plink:\t%s", state_name);
	}

	if (sinfo[NL80211_STA_INFO_STA_FLAGS]) {
	sta_flags = (struct nl80211_sta_flag_update *)
	nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]);

	if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
	printf("\n\tauthorized:\t");
	if (sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED))
	printf("yes");
	else
	printf("no");
	}

	if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
	printf("\n\tauthenticated:\t");
	if (sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
	printf("yes");
	else
	printf("no");
	}

	if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
	printf("\n\tpreamble:\t");
	if (sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
	printf("short");
	else
	printf("long");
	}

	if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME)) {
	printf("\n\tWMM/WME:\t");
	if (sta_flags->set & BIT(NL80211_STA_FLAG_WME))
	printf("yes");
	else
	printf("no");
	}

	if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP)) {
	printf("\n\tMFP:\t\t");
	if (sta_flags->set & BIT(NL80211_STA_FLAG_MFP))
	printf("yes");
	else
	printf("no");
	}

	if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
	printf("\n\tTDLS peer:\t\t");
	if (sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER))
	printf("yes");
	else
	printf("no");
	}
	}

	printf("\n");
	return NL_SKIP;
	}

	static int handle_station_get(struct nl80211_state *state,
	struct nl_cb *cb,
	struct nl_msg *msg,
	int argc, char **argv,
	enum id_input id)
	{
	unsigned char mac_addr[ETH_ALEN];

	if (argc < 1)
	return 1;

	if (mac_addr_a2n(mac_addr, argv[0])) {
	fprintf(stderr, "invalid mac address\n");
	return 2;
	}

	argc--;
	argv++;

	if (argc)
	return 1;

	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);

	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);

	return 0;
	nla_put_failure:
	return -ENOBUFS;
	}
	COMMAND(station, get, "<MAC address>",
	NL80211_CMD_GET_STATION, 0, CIB_NETDEV, handle_station_get,
	"Get information for a specific station.");
	COMMAND(station, del, "<MAC address>",
	NL80211_CMD_DEL_STATION, 0, CIB_NETDEV, handle_station_get,
	"Remove the given station entry (use with caution!)");

	static const struct cmd *station_set_plink;
	static const struct cmd *station_set_vlan;

	static const struct cmd select_station_cmd(int argc, char *argv)
	{
	if (argc < 2)
	return NULL;
	if (strcmp(argv[1], "plink_action") == 0)
	return station_set_plink;
	if (strcmp(argv[1], "vlan") == 0)
	return station_set_vlan;
	return NULL;
	}

	static int handle_station_set_plink(struct nl80211_state *state,
	struct nl_cb *cb,
	struct nl_msg *msg,
	int argc, char **argv,
	enum id_input id)
	{
	unsigned char plink_action;
	unsigned char mac_addr[ETH_ALEN];

	if (argc < 3)
	return 1;

	if (mac_addr_a2n(mac_addr, argv[0])) {
	fprintf(stderr, "invalid mac address\n");
	return 2;
	}
	argc--;
	argv++;

	if (strcmp("plink_action", argv[0]) != 0)
	return 1;
	argc--;
	argv++;

	if (strcmp("open", argv[0]) == 0)
	plink_action = PLINK_ACTION_OPEN;
	else if (strcmp("block", argv[0]) == 0)
	plink_action = PLINK_ACTION_BLOCK;
	else {
	fprintf(stderr, "plink action not supported\n");
	return 2;
	}
	argc--;
	argv++;

	if (argc)
	return 1;

	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
	NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_ACTION, plink_action);

	return 0;
	nla_put_failure:
	return -ENOBUFS;
	}
	COMMAND_ALIAS(station, set, "<MAC address> plink_action <open\|block>",
	NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set_plink,
	"Set mesh peer link action for this station (peer).",
	select_station_cmd, station_set_plink);

	static int handle_station_set_vlan(struct nl80211_state *state,
	struct nl_cb *cb,
	struct nl_msg *msg,
	int argc, char **argv,
	enum id_input id)
	{
	unsigned char mac_addr[ETH_ALEN];
	unsigned long sta_vlan = 0;
	char *err = NULL;

	if (argc < 3)
	return 1;

	if (mac_addr_a2n(mac_addr, argv[0])) {
	fprintf(stderr, "invalid mac address\n");
	return 2;
	}
	argc--;
	argv++;

	if (strcmp("vlan", argv[0]) != 0)
	return 1;
	argc--;
	argv++;

	sta_vlan = strtoul(argv[0], &err, 0);
	if (err && *err) {
	fprintf(stderr, "invalid vlan id\n");
	return 2;
	}
	argc--;
	argv++;

	if (argc)
	return 1;

	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
	NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, sta_vlan);

	return 0;
	nla_put_failure:
	return -ENOBUFS;
	}
	COMMAND_ALIAS(station, set, "<MAC address> vlan <ifindex>",
	NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set_vlan,
	"Set an AP VLAN for this station.",
	select_station_cmd, station_set_vlan);


	static int handle_station_dump(struct nl80211_state *state,
	struct nl_cb *cb,
	struct nl_msg *msg,
	int argc, char **argv,
	enum id_input id)
	{
	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);
	return 0;
	}
	COMMAND(station, dump, NULL,
	NL80211_CMD_GET_STATION, NLM_F_DUMP, CIB_NETDEV, handle_station_dump,
	"List all stations known, e.g. the AP on managed interfaces");