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aosp12/external/iw/info.c

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#include <stdbool.h>
#include <errno.h>
#include <net/if.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"
static void print_flag(const char *name, int *open)
{
if (!*open)
printf(" (");
else
printf(", ");
printf("%s", name);
*open = 1;
}
static char *cipher_name(__u32 c)
{
static char buf[20];
switch (c) {
case 0x000fac01:
return "WEP40 (00-0f-ac:1)";
case 0x000fac05:
return "WEP104 (00-0f-ac:5)";
case 0x000fac02:
return "TKIP (00-0f-ac:2)";
case 0x000fac04:
return "CCMP (00-0f-ac:4)";
case 0x000fac06:
return "CMAC (00-0f-ac:6)";
case 0x000fac08:
return "GCMP (00-0f-ac:8)";
case 0x00147201:
return "WPI-SMS4 (00-14-72:1)";
default:
sprintf(buf, "%.2x-%.2x-%.2x:%d",
c >> 24, (c >> 16) & 0xff,
(c >> 8) & 0xff, c & 0xff);
return buf;
}
}
static char *dfs_state_name(enum nl80211_dfs_state state)
{
switch (state) {
case NL80211_DFS_USABLE:
return "usable";
case NL80211_DFS_AVAILABLE:
return "available";
case NL80211_DFS_UNAVAILABLE:
return "unavailable";
default:
return "unknown";
}
}
static int ext_feature_isset(const unsigned char *ext_features, int ext_features_len,
enum nl80211_ext_feature_index ftidx)
{
unsigned char ft_byte;
if ((int) ftidx / 8 >= ext_features_len)
return 0;
ft_byte = ext_features[ftidx / 8];
return (ft_byte & BIT(ftidx % 8)) != 0;
}
static int print_phy_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
[NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
[__NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
};
struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
[NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
};
struct nlattr *nl_band;
struct nlattr *nl_freq;
struct nlattr *nl_rate;
struct nlattr *nl_mode;
struct nlattr *nl_cmd;
struct nlattr *nl_if, *nl_ftype;
int rem_band, rem_freq, rem_rate, rem_mode, rem_cmd, rem_ftype, rem_if;
int open;
/*
* static variables only work here, other applications need to use the
* callback pointer and store them there so they can be multithreaded
* and/or have multiple netlink sockets, etc.
*/
static int64_t phy_id = -1;
static int last_band = -1;
static bool band_had_freq = false;
bool print_name = true;
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb_msg[NL80211_ATTR_WIPHY]) {
if (nla_get_u32(tb_msg[NL80211_ATTR_WIPHY]) == phy_id)
print_name = false;
else
last_band = -1;
phy_id = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY]);
}
if (print_name && tb_msg[NL80211_ATTR_WIPHY_NAME])
printf("Wiphy %s\n", nla_get_string(tb_msg[NL80211_ATTR_WIPHY_NAME]));
/* needed for split dump */
if (tb_msg[NL80211_ATTR_WIPHY_BANDS]) {
nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
if (last_band != nl_band->nla_type) {
printf("\tBand %d:\n", nl_band->nla_type + 1);
band_had_freq = false;
}
last_band = nl_band->nla_type;
nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
nla_len(nl_band), NULL);
if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
__u16 cap = nla_get_u16(tb_band[NL80211_BAND_ATTR_HT_CAPA]);
print_ht_capability(cap);
}
if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
__u8 exponent = nla_get_u8(tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]);
print_ampdu_length(exponent);
}
if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
__u8 spacing = nla_get_u8(tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]);
print_ampdu_spacing(spacing);
}
if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]) == 16)
print_ht_mcs(nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]));
if (tb_band[NL80211_BAND_ATTR_VHT_CAPA] &&
tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])
print_vht_info(nla_get_u32(tb_band[NL80211_BAND_ATTR_VHT_CAPA]),
nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]));
if (tb_band[NL80211_BAND_ATTR_FREQS]) {
if (!band_had_freq) {
printf("\t\tFrequencies:\n");
band_had_freq = true;
}
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
uint32_t freq;
nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
nla_len(nl_freq), freq_policy);
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
continue;
freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
printf("\t\t\t* %d MHz [%d]", freq, ieee80211_frequency_to_channel(freq));
if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
!tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
printf(" (%.1f dBm)", 0.01 * nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
open = 0;
if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) {
print_flag("disabled", &open);
goto next;
}
/* If both flags are set assume an new kernel */
if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR] && tb_freq[__NL80211_FREQUENCY_ATTR_NO_IBSS]) {
print_flag("no IR", &open);
} else if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) {
print_flag("passive scan", &open);
} else if (tb_freq[__NL80211_FREQUENCY_ATTR_NO_IBSS]){
print_flag("no ibss", &open);
}
if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
print_flag("radar detection", &open);
next:
if (open)
printf(")");
printf("\n");
if (!tb_freq[NL80211_FREQUENCY_ATTR_DISABLED] && tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
enum nl80211_dfs_state state = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
unsigned long time;
printf("\t\t\t DFS state: %s", dfs_state_name(state));
if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_TIME]) {
time = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_TIME]);
printf(" (for %lu sec)", time/1000);
}
printf("\n");
if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME])
printf("\t\t\t DFS CAC time: %u ms\n",
nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]));
}
}
}
if (tb_band[NL80211_BAND_ATTR_RATES]) {
printf("\t\tBitrates (non-HT):\n");
nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
nla_len(nl_rate), rate_policy);
if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
continue;
printf("\t\t\t* %2.1f Mbps", 0.1 * nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]));
open = 0;
if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
print_flag("short preamble supported", &open);
if (open)
printf(")");
printf("\n");
}
}
}
}
if (tb_msg[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
printf("\tmax # scan SSIDs: %d\n",
nla_get_u8(tb_msg[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]));
if (tb_msg[NL80211_ATTR_MAX_SCAN_IE_LEN])
printf("\tmax scan IEs length: %d bytes\n",
nla_get_u16(tb_msg[NL80211_ATTR_MAX_SCAN_IE_LEN]));
if (tb_msg[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
printf("\tmax # sched scan SSIDs: %d\n",
nla_get_u8(tb_msg[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]));
if (tb_msg[NL80211_ATTR_MAX_MATCH_SETS])
printf("\tmax # match sets: %d\n",
nla_get_u8(tb_msg[NL80211_ATTR_MAX_MATCH_SETS]));
if (tb_msg[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
unsigned int frag;
frag = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
if (frag != (unsigned int)-1)
printf("\tFragmentation threshold: %d\n", frag);
}
if (tb_msg[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
unsigned int rts;
rts = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
if (rts != (unsigned int)-1)
printf("\tRTS threshold: %d\n", rts);
}
if (tb_msg[NL80211_ATTR_WIPHY_RETRY_SHORT] ||
tb_msg[NL80211_ATTR_WIPHY_RETRY_LONG]) {
unsigned char retry_short = 0, retry_long = 0;
if (tb_msg[NL80211_ATTR_WIPHY_RETRY_SHORT])
retry_short = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_RETRY_SHORT]);
if (tb_msg[NL80211_ATTR_WIPHY_RETRY_LONG])
retry_long = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_RETRY_LONG]);
if (retry_short == retry_long) {
printf("\tRetry short long limit: %d\n", retry_short);
} else {
printf("\tRetry short limit: %d\n", retry_short);
printf("\tRetry long limit: %d\n", retry_long);
}
}
if (tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
unsigned char coverage;
coverage = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
/* See handle_distance() for an explanation where the '450' comes from */
printf("\tCoverage class: %d (up to %dm)\n", coverage, 450 * coverage);
}
if (tb_msg[NL80211_ATTR_CIPHER_SUITES]) {
int num = nla_len(tb_msg[NL80211_ATTR_CIPHER_SUITES]) / sizeof(__u32);
int i;
__u32 *ciphers = nla_data(tb_msg[NL80211_ATTR_CIPHER_SUITES]);
if (num > 0) {
printf("\tSupported Ciphers:\n");
for (i = 0; i < num; i++)
printf("\t\t* %s\n",
cipher_name(ciphers[i]));
}
}
if (tb_msg[NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX] &&
tb_msg[NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX])
printf("\tAvailable Antennas: TX %#x RX %#x\n",
nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX]),
nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX]));
if (tb_msg[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
tb_msg[NL80211_ATTR_WIPHY_ANTENNA_RX])
printf("\tConfigured Antennas: TX %#x RX %#x\n",
nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_ANTENNA_TX]),
nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_ANTENNA_RX]));
if (tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES]) {
printf("\tSupported interface modes:\n");
nla_for_each_nested(nl_mode, tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES], rem_mode)
printf("\t\t * %s\n", iftype_name(nla_type(nl_mode)));
}
if (tb_msg[NL80211_ATTR_SOFTWARE_IFTYPES]) {
printf("\tsoftware interface modes (can always be added):\n");
nla_for_each_nested(nl_mode, tb_msg[NL80211_ATTR_SOFTWARE_IFTYPES], rem_mode)
printf("\t\t * %s\n", iftype_name(nla_type(nl_mode)));
}
if (tb_msg[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
struct nlattr *nl_combi;
int rem_combi;
bool have_combinations = false;
nla_for_each_nested(nl_combi, tb_msg[NL80211_ATTR_INTERFACE_COMBINATIONS], rem_combi) {
static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
[NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
[NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
[NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
[NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
};
struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
[NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
[NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
};
struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
struct nlattr *nl_limit;
int err, rem_limit;
bool comma = false;
if (!have_combinations) {
printf("\tvalid interface combinations:\n");
have_combinations = true;
}
printf("\t\t * ");
err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
nl_combi, iface_combination_policy);
if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
!tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
!tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) {
printf(" <failed to parse>\n");
goto broken_combination;
}
nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], rem_limit) {
bool ift_comma = false;
err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
nl_limit, iface_limit_policy);
if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) {
printf("<failed to parse>\n");
goto broken_combination;
}
if (comma)
printf(", ");
comma = true;
printf("#{");
nla_for_each_nested(nl_mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], rem_mode) {
printf("%s %s", ift_comma ? "," : "",
iftype_name(nla_type(nl_mode)));
ift_comma = true;
}
printf(" } <= %u", nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]));
}
printf(",\n\t\t ");
printf("total <= %d, #channels <= %d%s",
nla_get_u32(tb_comb[NL80211_IFACE_COMB_MAXNUM]),
nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]),
tb_comb[NL80211_IFACE_COMB_STA_AP_BI_MATCH] ?
", STA/AP BI must match" : "");
if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS]) {
unsigned long widths = nla_get_u32(tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS]);
if (widths) {
int width;
bool first = true;
printf(", radar detect widths: {");
for (width = 0; width < 32; width++)
if (widths & (1 << width)) {
printf("%s %s",
first ? "":",",
channel_width_name(width));
first = false;
}
printf(" }\n");
}
}
printf("\n");
broken_combination:
;
}
if (!have_combinations)
printf("\tinterface combinations are not supported\n");
}
if (tb_msg[NL80211_ATTR_SUPPORTED_COMMANDS]) {
printf("\tSupported commands:\n");
nla_for_each_nested(nl_cmd, tb_msg[NL80211_ATTR_SUPPORTED_COMMANDS], rem_cmd)
printf("\t\t * %s\n", command_name(nla_get_u32(nl_cmd)));
}
if (tb_msg[NL80211_ATTR_TX_FRAME_TYPES]) {
printf("\tSupported TX frame types:\n");
nla_for_each_nested(nl_if, tb_msg[NL80211_ATTR_TX_FRAME_TYPES], rem_if) {
bool printed = false;
nla_for_each_nested(nl_ftype, nl_if, rem_ftype) {
if (!printed)
printf("\t\t * %s:", iftype_name(nla_type(nl_if)));
printed = true;
printf(" 0x%.2x", nla_get_u16(nl_ftype));
}
if (printed)
printf("\n");
}
}
if (tb_msg[NL80211_ATTR_RX_FRAME_TYPES]) {
printf("\tSupported RX frame types:\n");
nla_for_each_nested(nl_if, tb_msg[NL80211_ATTR_RX_FRAME_TYPES], rem_if) {
bool printed = false;
nla_for_each_nested(nl_ftype, nl_if, rem_ftype) {
if (!printed)
printf("\t\t * %s:", iftype_name(nla_type(nl_if)));
printed = true;
printf(" 0x%.2x", nla_get_u16(nl_ftype));
}
if (printed)
printf("\n");
}
}
if (tb_msg[NL80211_ATTR_SUPPORT_IBSS_RSN])
printf("\tDevice supports RSN-IBSS.\n");
if (tb_msg[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]) {
struct nlattr *tb_wowlan[NUM_NL80211_WOWLAN_TRIG];
static struct nla_policy wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
[NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .minlen = 12 },
[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_U32 },
[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
};
struct nl80211_pattern_support *pat;
int err;
err = nla_parse_nested(tb_wowlan, MAX_NL80211_WOWLAN_TRIG,
tb_msg[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED],
wowlan_policy);
printf("\tWoWLAN support:");
if (err) {
printf(" <failed to parse>\n");
} else {
printf("\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_ANY])
printf("\t\t * wake up on anything (device continues operating normally)\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_DISCONNECT])
printf("\t\t * wake up on disconnect\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_MAGIC_PKT])
printf("\t\t * wake up on magic packet\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
pat = nla_data(tb_wowlan[NL80211_WOWLAN_TRIG_PKT_PATTERN]);
printf("\t\t * wake up on pattern match, up to %u patterns of %u-%u bytes,\n"
"\t\t maximum packet offset %u bytes\n",
pat->max_patterns, pat->min_pattern_len, pat->max_pattern_len,
(nla_len(tb_wowlan[NL80211_WOWLAN_TRIG_PKT_PATTERN]) <
sizeof(*pat)) ? 0 : pat->max_pkt_offset);
}
if (tb_wowlan[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
printf("\t\t * can do GTK rekeying\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
printf("\t\t * wake up on GTK rekey failure\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
printf("\t\t * wake up on EAP identity request\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
printf("\t\t * wake up on 4-way handshake\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
printf("\t\t * wake up on rfkill release\n");
if (tb_wowlan[NL80211_WOWLAN_TRIG_NET_DETECT])
printf("\t\t * wake up on network detection, up to %d match sets\n",
nla_get_u32(tb_wowlan[NL80211_WOWLAN_TRIG_NET_DETECT]));
if (tb_wowlan[NL80211_WOWLAN_TRIG_TCP_CONNECTION])
printf("\t\t * wake up on TCP connection\n");
}
}
if (tb_msg[NL80211_ATTR_ROAM_SUPPORT])
printf("\tDevice supports roaming.\n");
if (tb_msg[NL80211_ATTR_SUPPORT_AP_UAPSD])
printf("\tDevice supports AP-side u-APSD.\n");
if (tb_msg[NL80211_ATTR_HT_CAPABILITY_MASK]) {
struct ieee80211_ht_cap *cm;
printf("\tHT Capability overrides:\n");
if (nla_len(tb_msg[NL80211_ATTR_HT_CAPABILITY_MASK]) >= sizeof(*cm)) {
cm = nla_data(tb_msg[NL80211_ATTR_HT_CAPABILITY_MASK]);
printf("\t\t * MCS: %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx"
" %02hhx %02hhx %02hhx %02hhx\n",
cm->mcs.rx_mask[0], cm->mcs.rx_mask[1],
cm->mcs.rx_mask[2], cm->mcs.rx_mask[3],
cm->mcs.rx_mask[4], cm->mcs.rx_mask[5],
cm->mcs.rx_mask[6], cm->mcs.rx_mask[7],
cm->mcs.rx_mask[8], cm->mcs.rx_mask[9]);
if (cm->cap_info & htole16(IEEE80211_HT_CAP_MAX_AMSDU))
printf("\t\t * maximum A-MSDU length\n");
if (cm->cap_info & htole16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))
printf("\t\t * supported channel width\n");
if (cm->cap_info & htole16(IEEE80211_HT_CAP_SGI_40))
printf("\t\t * short GI for 40 MHz\n");
if (cm->ampdu_params_info & IEEE80211_HT_AMPDU_PARM_FACTOR)
printf("\t\t * max A-MPDU length exponent\n");
if (cm->ampdu_params_info & IEEE80211_HT_AMPDU_PARM_DENSITY)
printf("\t\t * min MPDU start spacing\n");
} else {
printf("\tERROR: capabilities mask is too short, expected: %d, received: %d\n",
(int)(sizeof(*cm)),
(int)(nla_len(tb_msg[NL80211_ATTR_HT_CAPABILITY_MASK])));
}
}
if (tb_msg[NL80211_ATTR_FEATURE_FLAGS]) {
unsigned int features = nla_get_u32(tb_msg[NL80211_ATTR_FEATURE_FLAGS]);
if (features & NL80211_FEATURE_SK_TX_STATUS)
printf("\tDevice supports TX status socket option.\n");
if (features & NL80211_FEATURE_HT_IBSS)
printf("\tDevice supports HT-IBSS.\n");
if (features & NL80211_FEATURE_INACTIVITY_TIMER)
printf("\tDevice has client inactivity timer.\n");
if (features & NL80211_FEATURE_CELL_BASE_REG_HINTS)
printf("\tDevice accepts cell base station regulatory hints.\n");
if (features & NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL)
printf("\tP2P Device uses a channel (of the concurrent ones)\n");
if (features & NL80211_FEATURE_SAE)
printf("\tDevice supports SAE with AUTHENTICATE command\n");
if (features & NL80211_FEATURE_LOW_PRIORITY_SCAN)
printf("\tDevice supports low priority scan.\n");
if (features & NL80211_FEATURE_SCAN_FLUSH)
printf("\tDevice supports scan flush.\n");
if (features & NL80211_FEATURE_AP_SCAN)
printf("\tDevice supports AP scan.\n");
if (features & NL80211_FEATURE_VIF_TXPOWER)
printf("\tDevice supports per-vif TX power setting\n");
if (features & NL80211_FEATURE_NEED_OBSS_SCAN)
printf("\tUserspace should do OBSS scan and generate 20/40 coex reports\n");
if (features & NL80211_FEATURE_P2P_GO_CTWIN)
printf("\tP2P GO supports CT window setting\n");
if (features & NL80211_FEATURE_P2P_GO_OPPPS)
printf("\tP2P GO supports opportunistic powersave setting\n");
if (features & NL80211_FEATURE_FULL_AP_CLIENT_STATE)
printf("\tDriver supports full state transitions for AP/GO clients\n");
if (features & NL80211_FEATURE_USERSPACE_MPM)
printf("\tDriver supports a userspace MPM\n");
if (features & NL80211_FEATURE_ACTIVE_MONITOR)
printf("\tDevice supports active monitor (which will ACK incoming frames)\n");
if (features & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
printf("\tDriver/device bandwidth changes during BSS lifetime (AP/GO mode)\n");
if (features & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
printf("\tDevice adds DS IE to probe requests\n");
if (features & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
printf("\tDevice adds WFA TPC Report IE to probe requests\n");
if (features & NL80211_FEATURE_QUIET)
printf("\tDevice supports quiet requests from AP\n");
if (features & NL80211_FEATURE_TX_POWER_INSERTION)
printf("\tDevice can update TPC Report IE\n");
if (features & NL80211_FEATURE_ACKTO_ESTIMATION)
printf("\tDevice supports ACK timeout estimation.\n");
if (features & NL80211_FEATURE_STATIC_SMPS)
printf("\tDevice supports static SMPS\n");
if (features & NL80211_FEATURE_DYNAMIC_SMPS)
printf("\tDevice supports dynamic SMPS\n");
if (features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
printf("\tDevice supports WMM-AC admission (TSPECs)\n");
if (features & NL80211_FEATURE_MAC_ON_CREATE)
printf("\tDevice supports configuring vdev MAC-addr on create.\n");
if (features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)
printf("\tDevice supports TDLS channel switching\n");
}
if (tb_msg[NL80211_ATTR_EXT_FEATURES]) {
struct nlattr *tb = tb_msg[NL80211_ATTR_EXT_FEATURES];
if (ext_feature_isset(nla_data(tb), nla_len(tb),
NL80211_EXT_FEATURE_VHT_IBSS))
printf("\tDevice supports VHT-IBSS.\n");
}
if (tb_msg[NL80211_ATTR_TDLS_SUPPORT])
printf("\tDevice supports T-DLS.\n");
if (tb_msg[NL80211_ATTR_COALESCE_RULE]) {
struct nl80211_coalesce_rule_support *rule;
struct nl80211_pattern_support *pat;
printf("\tCoalesce support:\n");
rule = nla_data(tb_msg[NL80211_ATTR_COALESCE_RULE]);
pat = &rule->pat;
printf("\t\t * Maximum %u coalesce rules supported\n"
"\t\t * Each rule contains upto %u patterns of %u-%u bytes,\n"
"\t\t maximum packet offset %u bytes\n"
"\t\t * Maximum supported coalescing delay %u msecs\n",
rule->max_rules, pat->max_patterns, pat->min_pattern_len,
pat->max_pattern_len, pat->max_pkt_offset, rule->max_delay);
}
return NL_SKIP;
}
static bool nl80211_has_split_wiphy = false;
static int handle_info(struct nl80211_state *state,
struct nl_cb *cb,
struct nl_msg *msg,
int argc, char **argv,
enum id_input id)
{
char *feat_args[] = { "features", "-q" };
int err;
err = handle_cmd(state, CIB_NONE, 2, feat_args);
if (!err && nl80211_has_split_wiphy) {
nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP);
nlmsg_hdr(msg)->nlmsg_flags |= NLM_F_DUMP;
}
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_phy_handler, NULL);
return 0;
}
__COMMAND(NULL, info, "info", NULL, NL80211_CMD_GET_WIPHY, 0, 0, CIB_PHY, handle_info,
"Show capabilities for the specified wireless device.", NULL);
TOPLEVEL(list, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info,
"List all wireless devices and their capabilities.");
TOPLEVEL(phy, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info, NULL);
static int handle_commands(struct nl80211_state *state,
struct nl_cb *cb, struct nl_msg *msg,
int argc, char **argv, enum id_input id)
{
int i;
for (i = 1; i < NL80211_CMD_MAX; i++)
printf("%d (0x%x): %s\n", i, i, command_name(i));
/* don't send netlink messages */
return 2;
}
TOPLEVEL(commands, NULL, NL80211_CMD_GET_WIPHY, 0, CIB_NONE, handle_commands,
"list all known commands and their decimal & hex value");
static int print_feature_handler(struct nl_msg *msg, void *arg)
{
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
bool print = (unsigned long)arg;
#define maybe_printf(...) do { if (print) printf(__VA_ARGS__); } while (0)
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) {
uint32_t feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]);
maybe_printf("nl80211 features: 0x%x\n", feat);
if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) {
maybe_printf("\t* split wiphy dump\n");
nl80211_has_split_wiphy = true;
}
}
return NL_SKIP;
}
static int handle_features(struct nl80211_state *state,
struct nl_cb *cb, struct nl_msg *msg,
int argc, char **argv, enum id_input id)
{
unsigned long print = argc == 0 || strcmp(argv[0], "-q");
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_feature_handler, (void *)print);
return 0;
}
TOPLEVEL(features, "", NL80211_CMD_GET_PROTOCOL_FEATURES, 0, CIB_NONE,
handle_features, "");
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