| #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 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_PASSIVE_SCAN] = { .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 bandidx = 1; |
| int rem_band, rem_freq, rem_rate, rem_mode, rem_cmd, rem_ftype, rem_if; |
| int open; |
| |
| nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), |
| genlmsg_attrlen(gnlh, 0), NULL); |
| |
| if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) |
| return NL_SKIP; |
| |
| if (tb_msg[NL80211_ATTR_WIPHY_NAME]) |
| printf("Wiphy %s\n", nla_get_string(tb_msg[NL80211_ATTR_WIPHY_NAME])); |
| |
| nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) { |
| printf("\tBand %d:\n", bandidx); |
| bandidx++; |
| |
| nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), |
| nla_len(nl_band), NULL); |
| |
| #ifdef NL80211_BAND_ATTR_HT_CAPA |
| 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])); |
| #endif |
| |
| printf("\t\tFrequencies:\n"); |
| |
| 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 (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN]) |
| print_flag("passive scanning", &open); |
| 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"); |
| } |
| |
| 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_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_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_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 }, |
| }; |
| 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\n", |
| 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" : ""); |
| 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%.4x", 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%.4x", 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 = sizeof(struct nl80211_wowlan_pattern_support), |
| }, |
| [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 }, |
| }; |
| struct nl80211_wowlan_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", |
| pat->max_patterns, pat->min_pattern_len, pat->max_pattern_len); |
| } |
| 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"); |
| } |
| } |
| |
| return NL_SKIP; |
| } |
| |
| static int handle_info(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_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); |
