[thirdparty/iw.git] / station.c

#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"

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];
	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_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 },
	};

	static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
		[NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
		[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!");
		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!");
		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%d ms",
			nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]));
	if (sinfo[NL80211_STA_INFO_RX_BYTES])
		printf("\n\trx bytes:\t%d",
			nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]));
	if (sinfo[NL80211_STA_INFO_RX_PACKETS])
		printf("\n\trx packets:\t%d",
			nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]));
	if (sinfo[NL80211_STA_INFO_TX_BYTES])
		printf("\n\ttx bytes:\t%d",
			nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]));
	if (sinfo[NL80211_STA_INFO_TX_PACKETS])
		printf("\n\ttx packets:\t%d",
			nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]));
	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_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!");
		} else {
			printf("\n\ttx bitrate:\t");
			if (rinfo[NL80211_RATE_INFO_BITRATE]) {
				int rate = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
				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_u16(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);
	}

	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)
{
	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 int handle_station_set(struct nl80211_state *state,
			      struct nl_cb *cb,
			      struct nl_msg *msg,
			      int argc, char **argv)
{
	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(station, set, "<MAC address> plink_action <open|block>",
	NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set,
	"Set mesh peer link action for this station (peer).");

static int handle_station_dump(struct nl80211_state *state,
			       struct nl_cb *cb,
			       struct nl_msg *msg,
			       int argc, char **argv)
{
	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");
Commit	Line	Data
2ef1be68	1	#include <net/if.h>
3d1e8704	2	#include <errno.h>
d5ac8ad3	3	#include <string.h>
2ef1be68	4
3d1e8704 LCC	5	#include <netlink/genl/genl.h>
	6	#include <netlink/genl/family.h>
	7	#include <netlink/genl/ctrl.h>
	8	#include <netlink/msg.h>
	9	#include <netlink/attr.h>
3d1e8704	10
f408e01b	11	#include "nl80211.h"
3d1e8704 LCC	12	#include "iw.h"
	13
	14	enum plink_state {
	15	LISTEN,
	16	OPN_SNT,
	17	OPN_RCVD,
	18	CNF_RCVD,
	19	ESTAB,
	20	HOLDING,
	21	BLOCKED
	22	};
	23
	24	enum plink_actions {
	25	PLINK_ACTION_UNDEFINED,
	26	PLINK_ACTION_OPEN,
	27	PLINK_ACTION_BLOCK,
	28	};
	29
	30
3d1e8704 LCC	31	static int print_sta_handler(struct nl_msg msg, void arg)
	32	{
	33	struct nlattr *tb[NL80211_ATTR_MAX + 1];
	34	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	35	struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
9cd3f1c1	36	struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
3d1e8704 LCC	37	char mac_addr[20], state_name[10], dev[20];
	38	static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
	39	[NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
	40	[NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
	41	[NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
859677cb JB	42	[NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
859677cb JB	43	[NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
9cd3f1c1 HR	44	[NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
9cd3f1c1 HR	45	[NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
3d1e8704 LCC	46	[NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
	47	[NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
	48	[NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
	49	};
	50
9cd3f1c1 HR	51	static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
	52	[NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
	53	[NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
	54	[NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
	55	[NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
	56	};
	57
3d1e8704 LCC	58	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
	59	genlmsg_attrlen(gnlh, 0), NULL);
	60
	61	/*
	62	* TODO: validate the interface and mac address!
	63	* Otherwise, there's a race condition as soon as
	64	* the kernel starts sending station notifications.
	65	*/
	66
	67	if (!tb[NL80211_ATTR_STA_INFO]) {
	68	fprintf(stderr, "sta stats missing!");
	69	return NL_SKIP;
	70	}
	71	if (nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
	72	tb[NL80211_ATTR_STA_INFO],
	73	stats_policy)) {
	74	fprintf(stderr, "failed to parse nested attributes!");
	75	return NL_SKIP;
	76	}
	77
	78	mac_addr_n2a(mac_addr, nla_data(tb[NL80211_ATTR_MAC]));
	79	if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
fbb181fa	80	printf("Station %s (on %s)", mac_addr, dev);
3d1e8704 LCC	81
3d1e8704 LCC	82	if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
fbb181fa	83	printf("\n\tinactive time:\t%d ms",
3d1e8704 LCC	84	nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]));
3d1e8704 LCC	85	if (sinfo[NL80211_STA_INFO_RX_BYTES])
fbb181fa	86	printf("\n\trx bytes:\t%d",
3d1e8704	87	nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]));
859677cb JB	88	if (sinfo[NL80211_STA_INFO_RX_PACKETS])
	89	printf("\n\trx packets:\t%d",
	90	nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]));
3d1e8704	91	if (sinfo[NL80211_STA_INFO_TX_BYTES])
fbb181fa	92	printf("\n\ttx bytes:\t%d",
3d1e8704	93	nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]));
859677cb JB	94	if (sinfo[NL80211_STA_INFO_TX_PACKETS])
	95	printf("\n\ttx packets:\t%d",
	96	nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]));
9cd3f1c1 HR	97	if (sinfo[NL80211_STA_INFO_SIGNAL])
	98	printf("\n\tsignal: \t%d dBm",
	99	(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]));
	100
	101	if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
	102	if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
	103	sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy)) {
	104	fprintf(stderr, "failed to parse nested rate attributes!");
	105	} else {
	106	printf("\n\ttx bitrate:\t");
	107	if (rinfo[NL80211_RATE_INFO_BITRATE]) {
	108	int rate = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
	109	printf("%d.%d MBit/s", rate / 10, rate % 10);
	110	}
	111
	112	if (rinfo[NL80211_RATE_INFO_MCS])
	113	printf(" MCS %d", nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]));
	114	if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
	115	printf(" 40Mhz");
	116	if (rinfo[NL80211_RATE_INFO_SHORT_GI])
	117	printf(" short GI");
	118	}
	119	}
	120
3d1e8704	121	if (sinfo[NL80211_STA_INFO_LLID])
fbb181fa	122	printf("\n\tmesh llid:\t%d",
3d1e8704 LCC	123	nla_get_u16(sinfo[NL80211_STA_INFO_LLID]));
3d1e8704 LCC	124	if (sinfo[NL80211_STA_INFO_PLID])
fbb181fa	125	printf("\n\tmesh plid:\t%d",
3d1e8704 LCC	126	nla_get_u16(sinfo[NL80211_STA_INFO_PLID]));
	127	if (sinfo[NL80211_STA_INFO_PLINK_STATE]) {
	128	switch (nla_get_u16(sinfo[NL80211_STA_INFO_PLINK_STATE])) {
	129	case LISTEN:
	130	strcpy(state_name, "LISTEN");
	131	break;
	132	case OPN_SNT:
	133	strcpy(state_name, "OPN_SNT");
	134	break;
	135	case OPN_RCVD:
	136	strcpy(state_name, "OPN_RCVD");
	137	break;
	138	case CNF_RCVD:
	139	strcpy(state_name, "CNF_RCVD");
	140	break;
	141	case ESTAB:
	142	strcpy(state_name, "ESTAB");
	143	break;
	144	case HOLDING:
	145	strcpy(state_name, "HOLDING");
	146	break;
	147	case BLOCKED:
	148	strcpy(state_name, "BLOCKED");
	149	break;
	150	default:
	151	strcpy(state_name, "UNKNOWN");
	152	break;
	153	}
fbb181fa	154	printf("\n\tmesh plink:\t%s", state_name);
3d1e8704 LCC	155	}
	156
	157	printf("\n");
	158	return NL_SKIP;
	159	}
	160
7c37a24d JB	161	static int handle_station_get(struct nl80211_state *state,
7c37a24d JB	162	struct nl_cb *cb,
b1ca19a8 JB	163	struct nl_msg *msg,
b1ca19a8 JB	164	int argc, char **argv)
3d1e8704	165	{
3d1e8704 LCC	166	unsigned char mac_addr[ETH_ALEN];
3d1e8704 LCC	167
b1ca19a8	168	if (argc < 1)
5e75fd04	169	return 1;
3d1e8704 LCC	170
	171	if (mac_addr_a2n(mac_addr, argv[0])) {
	172	fprintf(stderr, "invalid mac address\n");
5e75fd04	173	return 2;
3d1e8704 LCC	174	}
	175
	176	argc--;
	177	argv++;
	178
b1ca19a8	179	if (argc)
5e75fd04	180	return 1;
3d1e8704 LCC	181
3d1e8704 LCC	182	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
3d1e8704	183
3d1e8704	184	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);
3d1e8704	185
70391ccf	186	return 0;
3d1e8704	187	nla_put_failure:
70391ccf	188	return -ENOBUFS;
3d1e8704	189	}
b1ca19a8	190	COMMAND(station, get, "<MAC address>",
70cf4544 JB	191	NL80211_CMD_GET_STATION, 0, CIB_NETDEV, handle_station_get,
70cf4544 JB	192	"Get information for a specific station.");
b1ca19a8	193	COMMAND(station, del, "<MAC address>",
70cf4544 JB	194	NL80211_CMD_DEL_STATION, 0, CIB_NETDEV, handle_station_get,
70cf4544 JB	195	"Remove the given station entry (use with caution!)");
3d1e8704	196
7c37a24d JB	197	static int handle_station_set(struct nl80211_state *state,
7c37a24d JB	198	struct nl_cb *cb,
b1ca19a8 JB	199	struct nl_msg *msg,
b1ca19a8 JB	200	int argc, char **argv)
3d1e8704	201	{
3d1e8704 LCC	202	unsigned char plink_action;
	203	unsigned char mac_addr[ETH_ALEN];
	204
b1ca19a8	205	if (argc < 3)
5e75fd04	206	return 1;
3d1e8704 LCC	207
	208	if (mac_addr_a2n(mac_addr, argv[0])) {
	209	fprintf(stderr, "invalid mac address\n");
5e75fd04	210	return 2;
3d1e8704 LCC	211	}
	212	argc--;
	213	argv++;
	214
b1ca19a8 JB	215	if (strcmp("plink_action", argv[0]) != 0)
b1ca19a8 JB	216	return 1;
3d1e8704 LCC	217	argc--;
	218	argv++;
	219
	220	if (strcmp("open", argv[0]) == 0)
	221	plink_action = PLINK_ACTION_OPEN;
	222	else if (strcmp("block", argv[0]) == 0)
	223	plink_action = PLINK_ACTION_BLOCK;
	224	else {
	225	fprintf(stderr, "plink action not supported\n");
5e75fd04	226	return 2;
3d1e8704 LCC	227	}
	228	argc--;
	229	argv++;
	230
b1ca19a8	231	if (argc)
5e75fd04	232	return 1;
3d1e8704 LCC	233
3d1e8704 LCC	234	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
3d1e8704 LCC	235	NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_ACTION, plink_action);
3d1e8704 LCC	236
70391ccf	237	return 0;
3d1e8704	238	nla_put_failure:
70391ccf	239	return -ENOBUFS;
3d1e8704	240	}
b1ca19a8	241	COMMAND(station, set, "<MAC address> plink_action <open\|block>",
70cf4544 JB	242	NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set,
70cf4544 JB	243	"Set mesh peer link action for this station (peer).");
b1ca19a8	244
7c37a24d JB	245	static int handle_station_dump(struct nl80211_state *state,
7c37a24d JB	246	struct nl_cb *cb,
b1ca19a8 JB	247	struct nl_msg *msg,
b1ca19a8 JB	248	int argc, char **argv)
3d1e8704	249	{
3d1e8704	250	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);
70391ccf	251	return 0;
3d1e8704	252	}
b1ca19a8	253	COMMAND(station, dump, NULL,
70cf4544 JB	254	NL80211_CMD_GET_STATION, NLM_F_DUMP, CIB_NETDEV, handle_station_dump,
70cf4544 JB	255	"List all stations known, e.g. the AP on managed interfaces");