]> git.ipfire.org Git - thirdparty/iw.git/blobdiff - util.c
iw: separate wait/print when waiting for an event
[thirdparty/iw.git] / util.c
diff --git a/util.c b/util.c
index 4542749a18bdd66d67fd79c08b26b57ca0c85f7d..2fa0b746048d34f6b7665c58cf8df6e00c90f83e 100644 (file)
--- a/util.c
+++ b/util.c
@@ -5,7 +5,7 @@
 #include "iw.h"
 #include "nl80211.h"
 
-void mac_addr_n2a(char *mac_addr, unsigned char *arg)
+void mac_addr_n2a(char *mac_addr, const unsigned char *arg)
 {
        int i, l;
 
@@ -133,6 +133,8 @@ static const char *ifmodes[NL80211_IFTYPE_MAX + 1] = {
        "P2P-client",
        "P2P-GO",
        "P2P-device",
+       "outside context of a BSS",
+       "NAN",
 };
 
 static char modebuf[100];
@@ -147,7 +149,7 @@ const char *iftype_name(enum nl80211_iftype iftype)
 
 static const char *commands[NL80211_CMD_MAX + 1] = {
 /*
- * sed 's/^\tNL80211_CMD_//;t n;d;:n s%^\([^=]*\),.*%\t[NL80211_CMD_\1] = \"\L\1\",%;t;d' nl80211.h
+ * sed 's%^\tNL80211_CMD_%%;t n;d;:n s%^\([^=]*\),.*%\t[NL80211_CMD_\1] = \"\L\1\",%;t;d' nl80211.h | grep -v "reserved"
  */
        [NL80211_CMD_UNSPEC] = "unspec",
        [NL80211_CMD_GET_WIPHY] = "get_wiphy",
@@ -248,6 +250,41 @@ static const char *commands[NL80211_CMD_MAX + 1] = {
        [NL80211_CMD_FT_EVENT] = "ft_event",
        [NL80211_CMD_CRIT_PROTOCOL_START] = "crit_protocol_start",
        [NL80211_CMD_CRIT_PROTOCOL_STOP] = "crit_protocol_stop",
+       [NL80211_CMD_GET_COALESCE] = "get_coalesce",
+       [NL80211_CMD_SET_COALESCE] = "set_coalesce",
+       [NL80211_CMD_CHANNEL_SWITCH] = "channel_switch",
+       [NL80211_CMD_VENDOR] = "vendor",
+       [NL80211_CMD_SET_QOS_MAP] = "set_qos_map",
+       [NL80211_CMD_ADD_TX_TS] = "add_tx_ts",
+       [NL80211_CMD_DEL_TX_TS] = "del_tx_ts",
+       [NL80211_CMD_GET_MPP] = "get_mpp",
+       [NL80211_CMD_JOIN_OCB] = "join_ocb",
+       [NL80211_CMD_LEAVE_OCB] = "leave_ocb",
+       [NL80211_CMD_CH_SWITCH_STARTED_NOTIFY] = "ch_switch_started_notify",
+       [NL80211_CMD_TDLS_CHANNEL_SWITCH] = "tdls_channel_switch",
+       [NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH] = "tdls_cancel_channel_switch",
+       [NL80211_CMD_WIPHY_REG_CHANGE] = "wiphy_reg_change",
+       [NL80211_CMD_ABORT_SCAN] = "abort_scan",
+       [NL80211_CMD_START_NAN] = "start_nan",
+       [NL80211_CMD_STOP_NAN] = "stop_nan",
+       [NL80211_CMD_ADD_NAN_FUNCTION] = "add_nan_function",
+       [NL80211_CMD_DEL_NAN_FUNCTION] = "del_nan_function",
+       [NL80211_CMD_CHANGE_NAN_CONFIG] = "change_nan_config",
+       [NL80211_CMD_NAN_MATCH] = "nan_match",
+       [NL80211_CMD_SET_MULTICAST_TO_UNICAST] = "set_multicast_to_unicast",
+       [NL80211_CMD_UPDATE_CONNECT_PARAMS] = "update_connect_params",
+       [NL80211_CMD_SET_PMK] = "set_pmk",
+       [NL80211_CMD_DEL_PMK] = "del_pmk",
+       [NL80211_CMD_PORT_AUTHORIZED] = "port_authorized",
+       [NL80211_CMD_RELOAD_REGDB] = "reload_regdb",
+       [NL80211_CMD_EXTERNAL_AUTH] = "external_auth",
+       [NL80211_CMD_STA_OPMODE_CHANGED] = "sta_opmode_changed",
+       [NL80211_CMD_CONTROL_PORT_FRAME] = "control_port_frame",
+       [NL80211_CMD_GET_FTM_RESPONDER_STATS] = "get_ftm_responder_stats",
+       [NL80211_CMD_PEER_MEASUREMENT_START] = "peer_measurement_start",
+       [NL80211_CMD_PEER_MEASUREMENT_RESULT] = "peer_measurement_result",
+       [NL80211_CMD_PEER_MEASUREMENT_COMPLETE] = "peer_measurement_complete",
+       [NL80211_CMD_NOTIFY_RADAR] = "notify_radar",
 };
 
 static char cmdbuf[100];
@@ -330,7 +367,7 @@ static int hex2num(char digit)
        return tolower(digit) - 'a' + 10;
 }
 
-static int hex2byte(char *hex)
+static int hex2byte(const char *hex)
 {
        int d1, d2;
 
@@ -343,7 +380,7 @@ static int hex2byte(char *hex)
        return (d1 << 4) | d2;
 }
 
-static char *hex2bin(char *hex, char *buf)
+char *hex2bin(const char *hex, char *buf)
 {
        char *result = buf;
        int d;
@@ -360,16 +397,103 @@ static char *hex2bin(char *hex, char *buf)
        return result;
 }
 
-int parse_keys(struct nl_msg *msg, char **argv, int argc)
+static int parse_akm_suite(const char *cipher_str)
+{
+
+       if (!strcmp(cipher_str, "PSK"))
+               return 0x000FAC02;
+       if (!strcmp(cipher_str, "FT/PSK"))
+               return 0x000FAC03;
+       if (!strcmp(cipher_str, "PSK/SHA-256"))
+               return 0x000FAC06;
+       return -EINVAL;
+}
+
+static int parse_cipher_suite(const char *cipher_str)
+{
+
+       if (!strcmp(cipher_str, "TKIP"))
+               return 0x000FAC02;
+       if (!strcmp(cipher_str, "CCMP") || !strcmp(cipher_str, "CCMP-128"))
+               return 0x000FAC04;
+       if (!strcmp(cipher_str, "GCMP") || !strcmp(cipher_str, "GCMP-128"))
+               return 0x000FAC08;
+       if (!strcmp(cipher_str, "GCMP-256"))
+               return 0x000FAC09;
+       if (!strcmp(cipher_str, "CCMP-256"))
+               return 0x000FAC0A;
+       return -EINVAL;
+}
+
+int parse_keys(struct nl_msg *msg, char **argv[], int *argc)
 {
        struct nlattr *keys;
        int i = 0;
        bool have_default = false;
+       char *arg = **argv;
        char keybuf[13];
+       int pos = 0;
 
-       if (!argc)
+       if (!*argc)
                return 1;
 
+       if (!memcmp(&arg[pos], "psk", 3)) {
+               char psk_keybuf[32];
+               int cipher_suite, akm_suite;
+
+               if (*argc < 4)
+                       goto explain;
+
+               pos+=3;
+               if (arg[pos] != ':')
+                       goto explain;
+               pos++;
+
+               NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, NL80211_WPA_VERSION_2);
+
+               if (strlen(&arg[pos]) != (sizeof(psk_keybuf) * 2) || !hex2bin(&arg[pos], psk_keybuf)) {
+                       printf("Bad PSK\n");
+                       return -EINVAL;
+               }
+
+               NLA_PUT(msg, NL80211_ATTR_PMK, 32, psk_keybuf);
+               NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, NL80211_AUTHTYPE_OPEN_SYSTEM);
+
+               *argv += 1;
+               *argc -= 1;
+               arg = **argv;
+
+               akm_suite = parse_akm_suite(arg);
+               if (akm_suite < 0)
+                       goto explain;
+
+               NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, akm_suite);
+
+               *argv += 1;
+               *argc -= 1;
+               arg = **argv;
+
+               cipher_suite = parse_cipher_suite(arg);
+               if (cipher_suite < 0)
+                       goto explain;
+
+               NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher_suite);
+
+               *argv += 1;
+               *argc -= 1;
+               arg = **argv;
+
+               cipher_suite = parse_cipher_suite(arg);
+               if (cipher_suite < 0)
+                       goto explain;
+
+               NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher_suite);
+
+               *argv += 1;
+               *argc -= 1;
+               return 0;
+       }
+
        NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
 
        keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
@@ -377,11 +501,13 @@ int parse_keys(struct nl_msg *msg, char **argv, int argc)
                return -ENOBUFS;
 
        do {
-               char *arg = *argv;
-               int pos = 0, keylen;
+               int keylen;
                struct nlattr *key = nla_nest_start(msg, ++i);
                char *keydata;
 
+               arg = **argv;
+               pos = 0;
+
                if (!key)
                        return -ENOBUFS;
 
@@ -402,12 +528,14 @@ int parse_keys(struct nl_msg *msg, char **argv, int argc)
                switch (strlen(keydata)) {
                case 10:
                        keydata = hex2bin(keydata, keybuf);
+                       /* fall through */
                case 5:
                        NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC01);
                        keylen = 5;
                        break;
                case 26:
                        keydata = hex2bin(keydata, keybuf);
+                       /* fall through */
                case 13:
                        NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC05);
                        keylen = 13;
@@ -421,15 +549,15 @@ int parse_keys(struct nl_msg *msg, char **argv, int argc)
 
                NLA_PUT(msg, NL80211_KEY_DATA, keylen, keydata);
 
-               argv++;
-               argc--;
+               *argv += 1;
+               *argc -= 1;
 
                /* one key should be TX key */
-               if (!have_default && !argc)
+               if (!have_default && !*argc)
                        NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
 
                nla_nest_end(msg, key);
-       } while (argc);
+       } while (*argc);
 
        nla_nest_end(msg, keys);
 
@@ -442,10 +570,284 @@ int parse_keys(struct nl_msg *msg, char **argv, int argc)
                        "  'index:' is a single digit (0-3)\n"
                        "  'data'   must be 5 or 13 ascii chars\n"
                        "           or 10 or 26 hex digits\n"
-                       "for example: d:2:6162636465 is the same as d:2:abcde\n");
+                       "for example: d:2:6162636465 is the same as d:2:abcde\n"
+                       "or psk:data <AKM Suite> <pairwise CIPHER> <groupwise CIPHER> where\n"
+                       "  'data' is the PSK (output of wpa_passphrase and the CIPHER can be CCMP or GCMP\n"
+                       "for example: psk:0123456789abcdef PSK CCMP CCMP\n"
+                       "The allowed AKM suites are PSK, FT/PSK, PSK/SHA-256\n"
+                       "The allowed Cipher suites are TKIP, CCMP, GCMP, GCMP-256, CCMP-256\n");
        return 2;
 }
 
+enum nl80211_chan_width str_to_bw(const char *str)
+{
+       static const struct {
+               const char *name;
+               unsigned int val;
+       } bwmap[] = {
+               { .name = "5", .val = NL80211_CHAN_WIDTH_5, },
+               { .name = "10", .val = NL80211_CHAN_WIDTH_10, },
+               { .name = "20", .val = NL80211_CHAN_WIDTH_20, },
+               { .name = "40", .val = NL80211_CHAN_WIDTH_40, },
+               { .name = "80", .val = NL80211_CHAN_WIDTH_80, },
+               { .name = "80+80", .val = NL80211_CHAN_WIDTH_80P80, },
+               { .name = "160", .val = NL80211_CHAN_WIDTH_160, },
+       };
+       unsigned int i;
+
+       for (i = 0; i < ARRAY_SIZE(bwmap); i++) {
+               if (strcasecmp(bwmap[i].name, str) == 0)
+                       return bwmap[i].val;
+       }
+
+       return NL80211_CHAN_WIDTH_20_NOHT;
+}
+
+static int parse_freqs(struct chandef *chandef, int argc, char **argv,
+                      int *parsed)
+{
+       uint32_t freq;
+       char *end;
+       bool need_cf1 = false, need_cf2 = false;
+
+       if (argc < 1)
+               return 0;
+
+       chandef->width = str_to_bw(argv[0]);
+
+       switch (chandef->width) {
+       case NL80211_CHAN_WIDTH_20_NOHT:
+               /* First argument was not understood, give up gracefully. */
+               return 0;
+       case NL80211_CHAN_WIDTH_20:
+       case NL80211_CHAN_WIDTH_5:
+       case NL80211_CHAN_WIDTH_10:
+               break;
+       case NL80211_CHAN_WIDTH_80P80:
+               need_cf2 = true;
+               /* fall through */
+       case NL80211_CHAN_WIDTH_40:
+       case NL80211_CHAN_WIDTH_80:
+       case NL80211_CHAN_WIDTH_160:
+               need_cf1 = true;
+               break;
+       }
+
+       *parsed += 1;
+
+       if (!need_cf1)
+               return 0;
+
+       if (argc < 2)
+               return 1;
+
+       /* center freq 1 */
+       if (!*argv[1])
+               return 1;
+       freq = strtoul(argv[1], &end, 10);
+       if (*end)
+               return 1;
+       *parsed += 1;
+
+       chandef->center_freq1 = freq;
+
+       if (!need_cf2)
+               return 0;
+
+       if (argc < 3)
+               return 1;
+
+       /* center freq 2 */
+       if (!*argv[2])
+               return 1;
+       freq = strtoul(argv[2], &end, 10);
+       if (*end)
+               return 1;
+       chandef->center_freq2 = freq;
+
+       *parsed += 1;
+
+       return 0;
+}
+
+
+/**
+ * parse_freqchan - Parse frequency or channel definition
+ *
+ * @chandef: chandef structure to be filled in
+ * @chan: Boolean whether to parse a channel or frequency based specifier
+ * @argc: Number of arguments
+ * @argv: Array of string arguments
+ * @parsed: Pointer to return the number of used arguments, or NULL to error
+ *          out if any argument is left unused.
+ *
+ * The given chandef structure will be filled in from the command line
+ * arguments. argc/argv will be updated so that further arguments from the
+ * command line can be parsed.
+ *
+ * Note that despite the fact that the function knows how many center freqs
+ * are needed, there's an ambiguity if the next argument after this is an
+ * integer argument, since the valid channel width values are interpreted
+ * as such, rather than a following argument. This can be avoided by the
+ * user by giving "NOHT" instead.
+ *
+ * The working specifier if chan is set are:
+ *   <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
+ *
+ * And if frequency is set:
+ *   <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
+ *   <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
+ *
+ * If the mode/channel width is not given the NOHT is assumed.
+ *
+ * Return: Number of used arguments, zero or negative error number otherwise
+ */
+int parse_freqchan(struct chandef *chandef, bool chan, int argc, char **argv,
+                  int *parsed)
+{
+       char *end;
+       static const struct chanmode chanmode[] = {
+               { .name = "HT20",
+                 .width = NL80211_CHAN_WIDTH_20,
+                 .freq1_diff = 0,
+                 .chantype = NL80211_CHAN_HT20 },
+               { .name = "HT40+",
+                 .width = NL80211_CHAN_WIDTH_40,
+                 .freq1_diff = 10,
+                 .chantype = NL80211_CHAN_HT40PLUS },
+               { .name = "HT40-",
+                 .width = NL80211_CHAN_WIDTH_40,
+                 .freq1_diff = -10,
+                 .chantype = NL80211_CHAN_HT40MINUS },
+               { .name = "NOHT",
+                 .width = NL80211_CHAN_WIDTH_20_NOHT,
+                 .freq1_diff = 0,
+                 .chantype = NL80211_CHAN_NO_HT },
+               { .name = "5MHz",
+                 .width = NL80211_CHAN_WIDTH_5,
+                 .freq1_diff = 0,
+                 .chantype = -1 },
+               { .name = "10MHz",
+                 .width = NL80211_CHAN_WIDTH_10,
+                 .freq1_diff = 0,
+                 .chantype = -1 },
+               { .name = "80MHz",
+                 .width = NL80211_CHAN_WIDTH_80,
+                 .freq1_diff = 0,
+                 .chantype = -1 },
+       };
+       const struct chanmode *chanmode_selected = NULL;
+       unsigned int freq;
+       unsigned int i;
+       int _parsed = 0;
+       int res = 0;
+
+       if (argc < 1)
+               return 1;
+
+       if (!argv[0])
+               goto out;
+       freq = strtoul(argv[0], &end, 10);
+       if (*end) {
+               res = 1;
+               goto out;
+       }
+
+       _parsed += 1;
+
+       memset(chandef, 0, sizeof(struct chandef));
+
+       if (chan) {
+               enum nl80211_band band;
+
+               band = freq <= 14 ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
+               freq = ieee80211_channel_to_frequency(freq, band);
+       }
+       chandef->control_freq = freq;
+       /* Assume 20MHz NOHT channel for now. */
+       chandef->center_freq1 = freq;
+
+       /* Try to parse HT mode definitions */
+       if (argc > 1) {
+               for (i = 0; i < ARRAY_SIZE(chanmode); i++) {
+                       if (strcasecmp(chanmode[i].name, argv[1]) == 0) {
+                               chanmode_selected = &chanmode[i];
+                               _parsed += 1;
+                               break;
+                       }
+               }
+       }
+
+       /* channel mode given, use it and return. */
+       if (chanmode_selected) {
+               chandef->center_freq1 = get_cf1(chanmode_selected, freq);
+               chandef->width = chanmode_selected->width;
+               goto out;
+       }
+
+       /* This was a only a channel definition, nothing further may follow. */
+       if (chan)
+               goto out;
+
+       res = parse_freqs(chandef, argc - 1, argv + 1, &_parsed);
+
+ out:
+       /* Error out if parsed is NULL. */
+       if (!parsed && _parsed != argc)
+               return 1;
+
+       if (parsed)
+               *parsed = _parsed;
+
+       return res;
+}
+
+int put_chandef(struct nl_msg *msg, struct chandef *chandef)
+{
+       NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chandef->control_freq);
+       NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width);
+
+       switch (chandef->width) {
+       case NL80211_CHAN_WIDTH_20_NOHT:
+               NLA_PUT_U32(msg,
+                           NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+                           NL80211_CHAN_NO_HT);
+               break;
+       case NL80211_CHAN_WIDTH_20:
+               NLA_PUT_U32(msg,
+                           NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+                           NL80211_CHAN_HT20);
+               break;
+       case NL80211_CHAN_WIDTH_40:
+               if (chandef->control_freq > chandef->center_freq1)
+                       NLA_PUT_U32(msg,
+                                   NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+                                   NL80211_CHAN_HT40MINUS);
+               else
+                       NLA_PUT_U32(msg,
+                                   NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+                                   NL80211_CHAN_HT40PLUS);
+               break;
+       default:
+               break;
+       }
+
+       if (chandef->center_freq1)
+               NLA_PUT_U32(msg,
+                           NL80211_ATTR_CENTER_FREQ1,
+                           chandef->center_freq1);
+
+       if (chandef->center_freq2)
+               NLA_PUT_U32(msg,
+                           NL80211_ATTR_CENTER_FREQ2,
+                           chandef->center_freq2);
+
+       return 0;
+
+ nla_put_failure:
+       return -ENOBUFS;
+}
+
 static void print_mcs_index(const __u8 *mcs)
 {
        int mcs_bit, prev_bit = -2, prev_cont = 0;
@@ -590,7 +992,7 @@ void print_ht_mcs(const __u8 *mcs)
        unsigned int tx_max_num_spatial_streams, max_rx_supp_data_rate;
        bool tx_mcs_set_defined, tx_mcs_set_equal, tx_unequal_modulation;
 
-       max_rx_supp_data_rate = (mcs[10] & ((mcs[11] & 0x3) << 8));
+       max_rx_supp_data_rate = (mcs[10] | ((mcs[11] & 0x3) << 8));
        tx_mcs_set_defined = !!(mcs[12] & (1 << 0));
        tx_mcs_set_equal = !(mcs[12] & (1 << 1));
        tx_max_num_spatial_streams = ((mcs[12] >> 2) & 3) + 1;
@@ -667,8 +1069,8 @@ void print_vht_info(__u32 capa, const __u8 *mcs)
        PRINT_VHT_CAPA(22, "+HTC-VHT");
        /* max A-MPDU */
        /* VHT link adaptation */
-       PRINT_VHT_CAPA(29, "RX antenna pattern consistency");
-       PRINT_VHT_CAPA(30, "TX antenna pattern consistency");
+       PRINT_VHT_CAPA(28, "RX antenna pattern consistency");
+       PRINT_VHT_CAPA(29, "TX antenna pattern consistency");
 
        printf("\t\tVHT RX MCS set:\n");
        tmp = mcs[0] | (mcs[1] << 8);
@@ -698,3 +1100,79 @@ void print_vht_info(__u32 capa, const __u8 *mcs)
        tmp = mcs[6] | (mcs[7] << 8);
        printf("\t\tVHT TX highest supported: %d Mbps\n", tmp & 0x1fff);
 }
+
+void iw_hexdump(const char *prefix, const __u8 *buf, size_t size)
+{
+       size_t i;
+
+       printf("%s: ", prefix);
+       for (i = 0; i < size; i++) {
+               if (i && i % 16 == 0)
+                       printf("\n%s: ", prefix);
+               printf("%02x ", buf[i]);
+       }
+       printf("\n\n");
+}
+
+int get_cf1(const struct chanmode *chanmode, unsigned long freq)
+{
+       unsigned int cf1 = freq, j;
+       unsigned int vht80[] = { 5180, 5260, 5500, 5580, 5660, 5745 };
+
+       switch (chanmode->width) {
+       case NL80211_CHAN_WIDTH_80:
+               /* setup center_freq1 */
+               for (j = 0; j < ARRAY_SIZE(vht80); j++) {
+                       if (freq >= vht80[j] && freq < vht80[j] + 80)
+                               break;
+               }
+
+               if (j == ARRAY_SIZE(vht80))
+                       break;
+
+               cf1 = vht80[j] + 30;
+               break;
+       default:
+               cf1 = freq + chanmode->freq1_diff;
+               break;
+       }
+
+       return cf1;
+}
+
+int parse_random_mac_addr(struct nl_msg *msg, char *addrs)
+{
+       char *a_addr, *a_mask, *sep;
+       unsigned char addr[ETH_ALEN], mask[ETH_ALEN];
+
+       if (!*addrs) {
+               /* randomise all but the multicast bit */
+               NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN,
+                       "\x00\x00\x00\x00\x00\x00");
+               NLA_PUT(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
+                       "\x01\x00\x00\x00\x00\x00");
+               return 0;
+       }
+
+       if (*addrs != '=')
+               return 1;
+
+       addrs++;
+       sep = strchr(addrs, '/');
+       a_addr = addrs;
+
+       if (!sep)
+               return 1;
+
+       *sep = 0;
+       a_mask = sep + 1;
+       if (mac_addr_a2n(addr, a_addr) || mac_addr_a2n(mask, a_mask))
+               return 1;
+
+       NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+       NLA_PUT(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN, mask);
+
+       return 0;
+ nla_put_failure:
+       return -ENOBUFS;
+}