[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_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_TX_BYTES])
		printf("\n\ttx bytes:\t%d",
			nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]));
	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 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);
COMMAND(station, del, "<MAC address>",
	NL80211_CMD_DEL_STATION, 0, CIB_NETDEV, handle_station_get);

static int handle_station_set(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);

static int handle_station_dump(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);
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 },
9cd3f1c1 HR	42	[NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
9cd3f1c1 HR	43	[NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
3d1e8704 LCC	44	[NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
	45	[NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
	46	[NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
	47	};
	48
9cd3f1c1 HR	49	static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
	50	[NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
	51	[NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
	52	[NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
	53	[NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
	54	};
	55
3d1e8704 LCC	56	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
	57	genlmsg_attrlen(gnlh, 0), NULL);
	58
	59	/*
	60	* TODO: validate the interface and mac address!
	61	* Otherwise, there's a race condition as soon as
	62	* the kernel starts sending station notifications.
	63	*/
	64
	65	if (!tb[NL80211_ATTR_STA_INFO]) {
	66	fprintf(stderr, "sta stats missing!");
	67	return NL_SKIP;
	68	}
	69	if (nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
	70	tb[NL80211_ATTR_STA_INFO],
	71	stats_policy)) {
	72	fprintf(stderr, "failed to parse nested attributes!");
	73	return NL_SKIP;
	74	}
	75
	76	mac_addr_n2a(mac_addr, nla_data(tb[NL80211_ATTR_MAC]));
	77	if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
fbb181fa	78	printf("Station %s (on %s)", mac_addr, dev);
3d1e8704 LCC	79
3d1e8704 LCC	80	if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
fbb181fa	81	printf("\n\tinactive time:\t%d ms",
3d1e8704 LCC	82	nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]));
3d1e8704 LCC	83	if (sinfo[NL80211_STA_INFO_RX_BYTES])
fbb181fa	84	printf("\n\trx bytes:\t%d",
3d1e8704 LCC	85	nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]));
3d1e8704 LCC	86	if (sinfo[NL80211_STA_INFO_TX_BYTES])
fbb181fa	87	printf("\n\ttx bytes:\t%d",
3d1e8704	88	nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]));
9cd3f1c1 HR	89	if (sinfo[NL80211_STA_INFO_SIGNAL])
	90	printf("\n\tsignal: \t%d dBm",
	91	(int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]));
	92
	93	if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
	94	if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
	95	sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy)) {
	96	fprintf(stderr, "failed to parse nested rate attributes!");
	97	} else {
	98	printf("\n\ttx bitrate:\t");
	99	if (rinfo[NL80211_RATE_INFO_BITRATE]) {
	100	int rate = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
	101	printf("%d.%d MBit/s", rate / 10, rate % 10);
	102	}
	103
	104	if (rinfo[NL80211_RATE_INFO_MCS])
	105	printf(" MCS %d", nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]));
	106	if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
	107	printf(" 40Mhz");
	108	if (rinfo[NL80211_RATE_INFO_SHORT_GI])
	109	printf(" short GI");
	110	}
	111	}
	112
3d1e8704	113	if (sinfo[NL80211_STA_INFO_LLID])
fbb181fa	114	printf("\n\tmesh llid:\t%d",
3d1e8704 LCC	115	nla_get_u16(sinfo[NL80211_STA_INFO_LLID]));
3d1e8704 LCC	116	if (sinfo[NL80211_STA_INFO_PLID])
fbb181fa	117	printf("\n\tmesh plid:\t%d",
3d1e8704 LCC	118	nla_get_u16(sinfo[NL80211_STA_INFO_PLID]));
	119	if (sinfo[NL80211_STA_INFO_PLINK_STATE]) {
	120	switch (nla_get_u16(sinfo[NL80211_STA_INFO_PLINK_STATE])) {
	121	case LISTEN:
	122	strcpy(state_name, "LISTEN");
	123	break;
	124	case OPN_SNT:
	125	strcpy(state_name, "OPN_SNT");
	126	break;
	127	case OPN_RCVD:
	128	strcpy(state_name, "OPN_RCVD");
	129	break;
	130	case CNF_RCVD:
	131	strcpy(state_name, "CNF_RCVD");
	132	break;
	133	case ESTAB:
	134	strcpy(state_name, "ESTAB");
	135	break;
	136	case HOLDING:
	137	strcpy(state_name, "HOLDING");
	138	break;
	139	case BLOCKED:
	140	strcpy(state_name, "BLOCKED");
	141	break;
	142	default:
	143	strcpy(state_name, "UNKNOWN");
	144	break;
	145	}
fbb181fa	146	printf("\n\tmesh plink:\t%s", state_name);
3d1e8704 LCC	147	}
	148
	149	printf("\n");
	150	return NL_SKIP;
	151	}
	152
70391ccf	153	static int handle_station_get(struct nl_cb *cb,
b1ca19a8 JB	154	struct nl_msg *msg,
b1ca19a8 JB	155	int argc, char **argv)
3d1e8704	156	{
3d1e8704 LCC	157	unsigned char mac_addr[ETH_ALEN];
3d1e8704 LCC	158
b1ca19a8	159	if (argc < 1)
5e75fd04	160	return 1;
3d1e8704 LCC	161
	162	if (mac_addr_a2n(mac_addr, argv[0])) {
	163	fprintf(stderr, "invalid mac address\n");
5e75fd04	164	return 2;
3d1e8704 LCC	165	}
	166
	167	argc--;
	168	argv++;
	169
b1ca19a8	170	if (argc)
5e75fd04	171	return 1;
3d1e8704 LCC	172
3d1e8704 LCC	173	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
3d1e8704	174
3d1e8704	175	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);
3d1e8704	176
70391ccf	177	return 0;
3d1e8704	178	nla_put_failure:
70391ccf	179	return -ENOBUFS;
3d1e8704	180	}
b1ca19a8 JB	181	COMMAND(station, get, "<MAC address>",
	182	NL80211_CMD_GET_STATION, 0, CIB_NETDEV, handle_station_get);
	183	COMMAND(station, del, "<MAC address>",
	184	NL80211_CMD_DEL_STATION, 0, CIB_NETDEV, handle_station_get);
3d1e8704	185
70391ccf	186	static int handle_station_set(struct nl_cb *cb,
b1ca19a8 JB	187	struct nl_msg *msg,
b1ca19a8 JB	188	int argc, char **argv)
3d1e8704	189	{
3d1e8704 LCC	190	unsigned char plink_action;
	191	unsigned char mac_addr[ETH_ALEN];
	192
b1ca19a8	193	if (argc < 3)
5e75fd04	194	return 1;
3d1e8704 LCC	195
	196	if (mac_addr_a2n(mac_addr, argv[0])) {
	197	fprintf(stderr, "invalid mac address\n");
5e75fd04	198	return 2;
3d1e8704 LCC	199	}
	200	argc--;
	201	argv++;
	202
b1ca19a8 JB	203	if (strcmp("plink_action", argv[0]) != 0)
b1ca19a8 JB	204	return 1;
3d1e8704 LCC	205	argc--;
	206	argv++;
	207
	208	if (strcmp("open", argv[0]) == 0)
	209	plink_action = PLINK_ACTION_OPEN;
	210	else if (strcmp("block", argv[0]) == 0)
	211	plink_action = PLINK_ACTION_BLOCK;
	212	else {
	213	fprintf(stderr, "plink action not supported\n");
5e75fd04	214	return 2;
3d1e8704 LCC	215	}
	216	argc--;
	217	argv++;
	218
b1ca19a8	219	if (argc)
5e75fd04	220	return 1;
3d1e8704 LCC	221
3d1e8704 LCC	222	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
3d1e8704 LCC	223	NLA_PUT_U8(msg, NL80211_ATTR_STA_PLINK_ACTION, plink_action);
3d1e8704 LCC	224
70391ccf	225	return 0;
3d1e8704	226	nla_put_failure:
70391ccf	227	return -ENOBUFS;
3d1e8704	228	}
b1ca19a8 JB	229	COMMAND(station, set, "<MAC address> plink_action <open\|block>",
	230	NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set);
	231
70391ccf	232	static int handle_station_dump(struct nl_cb *cb,
b1ca19a8 JB	233	struct nl_msg *msg,
b1ca19a8 JB	234	int argc, char **argv)
3d1e8704	235	{
3d1e8704	236	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_sta_handler, NULL);
70391ccf	237	return 0;
3d1e8704	238	}
b1ca19a8	239	COMMAND(station, dump, NULL,
f903d035	240	NL80211_CMD_GET_STATION, NLM_F_DUMP, CIB_NETDEV, handle_station_dump);