7 #include <netlink/genl/genl.h>
8 #include <netlink/genl/family.h>
9 #include <netlink/genl/ctrl.h>
10 #include <netlink/msg.h>
11 #include <netlink/attr.h>
16 #define WLAN_CAPABILITY_ESS (1<<0)
17 #define WLAN_CAPABILITY_IBSS (1<<1)
18 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
19 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
20 #define WLAN_CAPABILITY_PRIVACY (1<<4)
21 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
22 #define WLAN_CAPABILITY_PBCC (1<<6)
23 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
24 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
25 #define WLAN_CAPABILITY_QOS (1<<9)
26 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
27 #define WLAN_CAPABILITY_APSD (1<<11)
28 #define WLAN_CAPABILITY_RADIO_MEASURE (1<<12)
29 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
30 #define WLAN_CAPABILITY_DEL_BACK (1<<14)
31 #define WLAN_CAPABILITY_IMM_BACK (1<<15)
32 /* DMG (60gHz) 802.11ad */
33 /* type - bits 0..1 */
34 #define WLAN_CAPABILITY_DMG_TYPE_MASK (3<<0)
36 #define WLAN_CAPABILITY_DMG_TYPE_IBSS (1<<0) /* Tx by: STA */
37 #define WLAN_CAPABILITY_DMG_TYPE_PBSS (2<<0) /* Tx by: PCP */
38 #define WLAN_CAPABILITY_DMG_TYPE_AP (3<<0) /* Tx by: AP */
40 #define WLAN_CAPABILITY_DMG_CBAP_ONLY (1<<2)
41 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
42 #define WLAN_CAPABILITY_DMG_PRIVACY (1<<4)
43 #define WLAN_CAPABILITY_DMG_ECPAC (1<<5)
45 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT (1<<8)
46 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE (1<<12)
48 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
49 static unsigned char ieee80211_oui
[3] = { 0x00, 0x0f, 0xac };
50 static unsigned char wfa_oui
[3] = { 0x50, 0x6f, 0x9a };
54 enum print_ie_type type
;
55 bool show_both_ie_sets
;
58 #define IEEE80211_COUNTRY_EXTENSION_ID 201
60 union ieee80211_country_ie_triplet
{
65 } __attribute__ ((packed
)) chans
;
67 __u8 reg_extension_id
;
70 } __attribute__ ((packed
)) ext
;
71 } __attribute__ ((packed
));
73 static int handle_scan(struct nl80211_state
*state
,
76 int argc
, char **argv
,
79 struct nl_msg
*ssids
= NULL
, *freqs
= NULL
;
92 bool passive
= false, have_ssids
= false, have_freqs
= false;
93 size_t ies_len
= 0, meshid_len
= 0;
94 unsigned char *ies
= NULL
, *meshid
= NULL
, *tmpies
;
97 ssids
= nlmsg_alloc();
101 freqs
= nlmsg_alloc();
107 for (i
= 0; i
< argc
; i
++) {
110 if (strcmp(argv
[i
], "freq") == 0) {
114 } else if (strcmp(argv
[i
], "ies") == 0) {
117 } else if (strcmp(argv
[i
], "lowpri") == 0) {
119 flags
|= NL80211_SCAN_FLAG_LOW_PRIORITY
;
121 } else if (strcmp(argv
[i
], "flush") == 0) {
123 flags
|= NL80211_SCAN_FLAG_FLUSH
;
125 } else if (strcmp(argv
[i
], "ap-force") == 0) {
127 flags
|= NL80211_SCAN_FLAG_AP
;
129 } else if (strcmp(argv
[i
], "ssid") == 0) {
133 } else if (strcmp(argv
[i
], "passive") == 0) {
137 } else if (strcmp(argv
[i
], "meshid") == 0) {
144 freq
= strtoul(argv
[i
], &eptr
, 10);
145 if (eptr
!= argv
[i
] + strlen(argv
[i
])) {
146 /* failed to parse as number -- maybe a tag? */
151 NLA_PUT_U32(freqs
, i
, freq
);
154 ies
= parse_hex(argv
[i
], &ies_len
);
156 goto nla_put_failure
;
160 NLA_PUT(ssids
, i
, strlen(argv
[i
]), argv
[i
]);
163 meshid_len
= strlen(argv
[i
]);
164 meshid
= (unsigned char *) malloc(meshid_len
+ 2);
166 goto nla_put_failure
;
167 meshid
[0] = 114; /* mesh element id */
168 meshid
[1] = meshid_len
;
169 memcpy(&meshid
[2], argv
[i
], meshid_len
);
177 tmpies
= (unsigned char *) malloc(ies_len
+ meshid_len
);
179 goto nla_put_failure
;
181 memcpy(tmpies
, ies
, ies_len
);
185 memcpy(&tmpies
[ies_len
], meshid
, meshid_len
);
188 NLA_PUT(msg
, NL80211_ATTR_IE
, ies_len
+ meshid_len
, tmpies
);
193 NLA_PUT(ssids
, 1, 0, "");
195 nla_put_nested(msg
, NL80211_ATTR_SCAN_SSIDS
, ssids
);
198 nla_put_nested(msg
, NL80211_ATTR_SCAN_FREQUENCIES
, freqs
);
200 NLA_PUT_U32(msg
, NL80211_ATTR_SCAN_FLAGS
, flags
);
209 static void tab_on_first(bool *first
)
217 static void print_ssid(const uint8_t type
, uint8_t len
, const uint8_t *data
)
220 print_ssid_escaped(len
, data
);
224 #define BSS_MEMBERSHIP_SELECTOR_VHT_PHY 126
225 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
227 static void print_supprates(const uint8_t type
, uint8_t len
, const uint8_t *data
)
233 for (i
= 0; i
< len
; i
++) {
234 int r
= data
[i
] & 0x7f;
236 if (r
== BSS_MEMBERSHIP_SELECTOR_VHT_PHY
&& data
[i
] & 0x80)
238 else if (r
== BSS_MEMBERSHIP_SELECTOR_HT_PHY
&& data
[i
] & 0x80)
241 printf("%d.%d", r
/2, 5*(r
&1));
243 printf("%s ", data
[i
] & 0x80 ? "*" : "");
248 static void print_ds(const uint8_t type
, uint8_t len
, const uint8_t *data
)
250 printf(" channel %d\n", data
[0]);
253 static const char *country_env_str(char environment
)
255 switch (environment
) {
257 return "Indoor only";
259 return "Outdoor only";
261 return "Indoor/Outdoor";
267 static void print_country(const uint8_t type
, uint8_t len
, const uint8_t *data
)
269 printf(" %.*s", 2, data
);
271 printf("\tEnvironment: %s\n", country_env_str(data
[2]));
277 printf("\t\tNo country IE triplets present\n");
283 union ieee80211_country_ie_triplet
*triplet
= (void *) data
;
285 if (triplet
->ext
.reg_extension_id
>= IEEE80211_COUNTRY_EXTENSION_ID
) {
286 printf("\t\tExtension ID: %d Regulatory Class: %d Coverage class: %d (up to %dm)\n",
287 triplet
->ext
.reg_extension_id
,
288 triplet
->ext
.reg_class
,
289 triplet
->ext
.coverage_class
,
290 triplet
->ext
.coverage_class
* 450);
298 if (triplet
->chans
.first_channel
<= 14)
299 end_channel
= triplet
->chans
.first_channel
+ (triplet
->chans
.num_channels
- 1);
301 end_channel
= triplet
->chans
.first_channel
+ (4 * (triplet
->chans
.num_channels
- 1));
303 printf("\t\tChannels [%d - %d] @ %d dBm\n", triplet
->chans
.first_channel
, end_channel
, triplet
->chans
.max_power
);
312 static void print_powerconstraint(const uint8_t type
, uint8_t len
, const uint8_t *data
)
314 printf(" %d dB\n", data
[0]);
317 static void print_tpcreport(const uint8_t type
, uint8_t len
, const uint8_t *data
)
319 printf(" TX power: %d dBm\n", data
[0]);
320 /* printf(" Link Margin (%d dB) is reserved in Beacons\n", data[1]); */
323 static void print_erp(const uint8_t type
, uint8_t len
, const uint8_t *data
)
326 printf(" <no flags>");
328 printf(" NonERP_Present");
330 printf(" Use_Protection");
332 printf(" Barker_Preamble_Mode");
336 static void print_cipher(const uint8_t *data
)
338 if (memcmp(data
, ms_oui
, 3) == 0) {
341 printf("Use group cipher suite");
356 printf("%.02x-%.02x-%.02x:%d",
357 data
[0], data
[1] ,data
[2], data
[3]);
360 } else if (memcmp(data
, ieee80211_oui
, 3) == 0) {
363 printf("Use group cipher suite");
378 printf("AES-128-CMAC");
384 printf("%.02x-%.02x-%.02x:%d",
385 data
[0], data
[1] ,data
[2], data
[3]);
389 printf("%.02x-%.02x-%.02x:%d",
390 data
[0], data
[1] ,data
[2], data
[3]);
393 static void print_auth(const uint8_t *data
)
395 if (memcmp(data
, ms_oui
, 3) == 0) {
398 printf("IEEE 802.1X");
404 printf("%.02x-%.02x-%.02x:%d",
405 data
[0], data
[1] ,data
[2], data
[3]);
408 } else if (memcmp(data
, ieee80211_oui
, 3) == 0) {
411 printf("IEEE 802.1X");
417 printf("FT/IEEE 802.1X");
423 printf("IEEE 802.1X/SHA-256");
426 printf("PSK/SHA-256");
432 printf("%.02x-%.02x-%.02x:%d",
433 data
[0], data
[1] ,data
[2], data
[3]);
437 printf("%.02x-%.02x-%.02x:%d",
438 data
[0], data
[1] ,data
[2], data
[3]);
441 static void print_rsn_ie(const char *defcipher
, const char *defauth
,
442 uint8_t len
, const uint8_t *data
)
445 __u16 version
, count
, capa
;
448 version
= data
[0] + (data
[1] << 8);
449 tab_on_first(&first
);
450 printf("\t * Version: %d\n", version
);
456 tab_on_first(&first
);
457 printf("\t * Group cipher: %s\n", defcipher
);
458 printf("\t * Pairwise ciphers: %s\n", defcipher
);
462 tab_on_first(&first
);
463 printf("\t * Group cipher: ");
471 tab_on_first(&first
);
472 printf("\t * Pairwise ciphers: %s\n", defcipher
);
476 count
= data
[0] | (data
[1] << 8);
477 if (2 + (count
* 4) > len
)
480 tab_on_first(&first
);
481 printf("\t * Pairwise ciphers:");
482 for (i
= 0; i
< count
; i
++) {
484 print_cipher(data
+ 2 + (i
* 4));
488 data
+= 2 + (count
* 4);
489 len
-= 2 + (count
* 4);
492 tab_on_first(&first
);
493 printf("\t * Authentication suites: %s\n", defauth
);
497 count
= data
[0] | (data
[1] << 8);
498 if (2 + (count
* 4) > len
)
501 tab_on_first(&first
);
502 printf("\t * Authentication suites:");
503 for (i
= 0; i
< count
; i
++) {
505 print_auth(data
+ 2 + (i
* 4));
509 data
+= 2 + (count
* 4);
510 len
-= 2 + (count
* 4);
513 capa
= data
[0] | (data
[1] << 8);
514 tab_on_first(&first
);
515 printf("\t * Capabilities:");
519 printf(" NoPairwise");
520 switch ((capa
& 0x000c) >> 2) {
522 printf(" 1-PTKSA-RC");
525 printf(" 2-PTKSA-RC");
528 printf(" 4-PTKSA-RC");
531 printf(" 16-PTKSA-RC");
534 switch ((capa
& 0x0030) >> 4) {
536 printf(" 1-GTKSA-RC");
539 printf(" 2-GTKSA-RC");
542 printf(" 4-GTKSA-RC");
545 printf(" 16-GTKSA-RC");
549 printf(" MFP-required");
551 printf(" MFP-capable");
553 printf(" Peerkey-enabled");
555 printf(" SPP-AMSDU-capable");
557 printf(" SPP-AMSDU-required");
558 printf(" (0x%.4x)\n", capa
);
564 int pmkid_count
= data
[0] | (data
[1] << 8);
566 if (len
>= 2 + 16 * pmkid_count
) {
567 tab_on_first(&first
);
568 printf("\t * %d PMKIDs\n", pmkid_count
);
569 /* not printing PMKID values */
570 data
+= 2 + 16 * pmkid_count
;
571 len
-= 2 + 16 * pmkid_count
;
577 tab_on_first(&first
);
578 printf("\t * Group mgmt cipher suite: ");
587 printf("\t\t * bogus tail data (%d):", len
);
589 printf(" %.2x", *data
);
597 static void print_rsn(const uint8_t type
, uint8_t len
, const uint8_t *data
)
599 print_rsn_ie("CCMP", "IEEE 802.1X", len
, data
);
602 static void print_ht_capa(const uint8_t type
, uint8_t len
, const uint8_t *data
)
605 print_ht_capability(data
[0] | (data
[1] << 8));
606 print_ampdu_length(data
[2] & 3);
607 print_ampdu_spacing((data
[2] >> 2) & 7);
608 print_ht_mcs(data
+ 3);
611 static const char* ntype_11u(uint8_t t
)
614 case 0: return "Private";
615 case 1: return "Private with Guest";
616 case 2: return "Chargeable Public";
617 case 3: return "Free Public";
618 case 4: return "Personal Device";
619 case 5: return "Emergency Services Only";
620 case 14: return "Test or Experimental";
621 case 15: return "Wildcard";
622 default: return "Reserved";
626 static const char* vgroup_11u(uint8_t t
)
629 case 0: return "Unspecified";
630 case 1: return "Assembly";
631 case 2: return "Business";
632 case 3: return "Educational";
633 case 4: return "Factory and Industrial";
634 case 5: return "Institutional";
635 case 6: return "Mercantile";
636 case 7: return "Residential";
637 case 8: return "Storage";
638 case 9: return "Utility and Miscellaneous";
639 case 10: return "Vehicular";
640 case 11: return "Outdoor";
641 default: return "Reserved";
645 static void print_interworking(const uint8_t type
, uint8_t len
, const uint8_t *data
)
647 /* See Section 7.3.2.92 in the 802.11u spec. */
650 uint8_t ano
= data
[0];
651 printf("\t\tNetwork Options: 0x%hx\n", (unsigned short)(ano
));
652 printf("\t\t\tNetwork Type: %i (%s)\n",
653 (int)(ano
& 0xf), ntype_11u(ano
& 0xf));
655 printf("\t\t\tInternet\n");
657 printf("\t\t\tASRA\n");
659 printf("\t\t\tESR\n");
661 printf("\t\t\tUESA\n");
663 if ((len
== 3) || (len
== 9)) {
664 printf("\t\tVenue Group: %i (%s)\n",
665 (int)(data
[1]), vgroup_11u(data
[1]));
666 printf("\t\tVenue Type: %i\n", (int)(data
[2]));
669 printf("\t\tHESSID: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
670 data
[3], data
[4], data
[5], data
[6], data
[7], data
[8]);
672 printf("\t\tHESSID: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n",
673 data
[1], data
[2], data
[3], data
[4], data
[5], data
[6]);
676 static void print_11u_advert(const uint8_t type
, uint8_t len
, const uint8_t *data
)
678 /* See Section 7.3.2.93 in the 802.11u spec. */
679 /* TODO: This code below does not decode private protocol IDs */
682 while (idx
< (len
- 1)) {
683 uint8_t qri
= data
[idx
];
684 uint8_t proto_id
= data
[idx
+ 1];
685 printf("\t\tQuery Response Info: 0x%hx\n", (unsigned short)(qri
));
686 printf("\t\t\tQuery Response Length Limit: %i\n",
689 printf("\t\t\tPAME-BI\n");
692 printf("\t\t\tANQP\n"); break;
694 printf("\t\t\tMIH Information Service\n"); break;
696 printf("\t\t\tMIH Command and Event Services Capability Discovery\n"); break;
698 printf("\t\t\tEmergency Alert System (EAS)\n"); break;
700 printf("\t\t\tVendor Specific\n"); break;
702 printf("\t\t\tReserved: %i\n", proto_id
); break;
708 static const char *ht_secondary_offset
[4] = {
715 static void print_ht_op(const uint8_t type
, uint8_t len
, const uint8_t *data
)
717 static const char *protection
[4] = {
723 static const char *sta_chan_width
[2] = {
729 printf("\t\t * primary channel: %d\n", data
[0]);
730 printf("\t\t * secondary channel offset: %s\n",
731 ht_secondary_offset
[data
[1] & 0x3]);
732 printf("\t\t * STA channel width: %s\n", sta_chan_width
[(data
[1] & 0x4)>>2]);
733 printf("\t\t * RIFS: %d\n", (data
[1] & 0x8)>>3);
734 printf("\t\t * HT protection: %s\n", protection
[data
[2] & 0x3]);
735 printf("\t\t * non-GF present: %d\n", (data
[2] & 0x4) >> 2);
736 printf("\t\t * OBSS non-GF present: %d\n", (data
[2] & 0x10) >> 4);
737 printf("\t\t * dual beacon: %d\n", (data
[4] & 0x40) >> 6);
738 printf("\t\t * dual CTS protection: %d\n", (data
[4] & 0x80) >> 7);
739 printf("\t\t * STBC beacon: %d\n", data
[5] & 0x1);
740 printf("\t\t * L-SIG TXOP Prot: %d\n", (data
[5] & 0x2) >> 1);
741 printf("\t\t * PCO active: %d\n", (data
[5] & 0x4) >> 2);
742 printf("\t\t * PCO phase: %d\n", (data
[5] & 0x8) >> 3);
745 static void print_capabilities(const uint8_t type
, uint8_t len
, const uint8_t *data
)
751 for (i
= 0; i
< len
; i
++) {
754 for (bit
= 0; bit
< 8; bit
++) {
755 if (!(data
[i
] & (1 << bit
)))
763 #define CAPA(bit, name) case bit: printf(" " name); break
765 switch (bit
+ base
) {
766 CAPA(0, "HT Information Exchange Supported");
767 CAPA(1, "reserved (On-demand Beacon)");
768 CAPA(2, "Extended Channel Switching");
769 CAPA(3, "reserved (Wave Indication)");
770 CAPA(4, "PSMP Capability");
771 CAPA(5, "reserved (Service Interval Granularity)");
772 CAPA(6, "S-PSMP Capability");
774 CAPA(8, "Diagnostics");
775 CAPA(9, "Multicast Diagnostics");
776 CAPA(10, "Location Tracking");
778 CAPA(12, "Proxy ARP Service");
779 CAPA(13, "Collocated Interference Reporting");
780 CAPA(14, "Civic Location");
781 CAPA(15, "Geospatial Location");
783 CAPA(17, "WNM-Sleep Mode");
784 CAPA(18, "TIM Broadcast");
785 CAPA(19, "BSS Transition");
786 CAPA(20, "QoS Traffic Capability");
787 CAPA(21, "AC Station Count");
788 CAPA(22, "Multiple BSSID");
789 CAPA(23, "Timing Measurement");
790 CAPA(24, "Channel Usage");
791 CAPA(25, "SSID List");
793 CAPA(27, "UTC TSF Offset");
794 CAPA(28, "TDLS Peer U-APSD Buffer STA Support");
795 CAPA(29, "TDLS Peer PSM Support");
796 CAPA(30, "TDLS channel switching");
797 CAPA(31, "Interworking");
800 CAPA(34, "SSPN Interface");
801 CAPA(35, "Reserved");
802 CAPA(36, "MSGCF Capability");
803 CAPA(37, "TDLS Support");
804 CAPA(38, "TDLS Prohibited");
805 CAPA(39, "TDLS Channel Switching Prohibited");
806 CAPA(40, "Reject Unadmitted Frame");
807 CAPA(44, "Identifier Location");
808 CAPA(45, "U-APSD Coexistence");
809 CAPA(46, "WNM-Notification");
810 CAPA(47, "Reserved");
811 CAPA(48, "UTF-8 SSID");
823 static void print_tim(const uint8_t type
, uint8_t len
, const uint8_t *data
)
825 printf(" DTIM Count %u DTIM Period %u Bitmap Control 0x%x "
827 data
[0], data
[1], data
[2], data
[3]);
829 printf(" (+ %u octet%s)", len
- 4, len
- 4 == 1 ? "" : "s");
833 static void print_ibssatim(const uint8_t type
, uint8_t len
, const uint8_t *data
)
835 printf(" %d TUs", (data
[1] << 8) + data
[0]);
838 static void print_vht_capa(const uint8_t type
, uint8_t len
, const uint8_t *data
)
841 print_vht_info(data
[0] | (data
[1] << 8) |
842 (data
[2] << 16) | (data
[3] << 24),
846 static void print_vht_oper(const uint8_t type
, uint8_t len
, const uint8_t *data
)
848 const char *chandwidths
[] = {
849 [0] = "20 or 40 MHz",
856 printf("\t\t * channel width: %d (%s)\n", data
[0],
857 data
[0] < ARRAY_SIZE(chandwidths
) ? chandwidths
[data
[0]] : "unknown");
858 printf("\t\t * center freq segment 1: %d\n", data
[1]);
859 printf("\t\t * center freq segment 2: %d\n", data
[2]);
860 printf("\t\t * VHT basic MCS set: 0x%.2x%.2x\n", data
[4], data
[3]);
863 static void print_obss_scan_params(const uint8_t type
, uint8_t len
, const uint8_t *data
)
866 printf("\t\t * passive dwell: %d TUs\n", (data
[1] << 8) | data
[0]);
867 printf("\t\t * active dwell: %d TUs\n", (data
[3] << 8) | data
[2]);
868 printf("\t\t * channel width trigger scan interval: %d s\n", (data
[5] << 8) | data
[4]);
869 printf("\t\t * scan passive total per channel: %d TUs\n", (data
[7] << 8) | data
[6]);
870 printf("\t\t * scan active total per channel: %d TUs\n", (data
[9] << 8) | data
[8]);
871 printf("\t\t * BSS width channel transition delay factor: %d\n", (data
[11] << 8) | data
[10]);
872 printf("\t\t * OBSS Scan Activity Threshold: %d.%02d %%\n",
873 ((data
[13] << 8) | data
[12]) / 100, ((data
[13] << 8) | data
[12]) % 100);
876 static void print_secchan_offs(const uint8_t type
, uint8_t len
, const uint8_t *data
)
878 if (data
[0] < ARRAY_SIZE(ht_secondary_offset
))
879 printf(" %s (%d)\n", ht_secondary_offset
[data
[0]], data
[0]);
881 printf(" %d\n", data
[0]);
884 static void print_bss_load(const uint8_t type
, uint8_t len
, const uint8_t *data
)
887 printf("\t\t * station count: %d\n", (data
[1] << 8) | data
[0]);
888 printf("\t\t * channel utilisation: %d/255\n", data
[2]);
889 printf("\t\t * available admission capacity: %d [*32us]\n", (data
[4] << 8) | data
[3]);
892 static void print_mesh_conf(const uint8_t type
, uint8_t len
, const uint8_t *data
)
895 printf("\t\t * Active Path Selection Protocol ID: %d\n", data
[0]);
896 printf("\t\t * Active Path Selection Metric ID: %d\n", data
[1]);
897 printf("\t\t * Congestion Control Mode ID: %d\n", data
[2]);
898 printf("\t\t * Synchronization Method ID: %d\n", data
[3]);
899 printf("\t\t * Authentication Protocol ID: %d\n", data
[4]);
900 printf("\t\t * Mesh Formation Info:\n");
901 printf("\t\t\t Number of Peerings: %d\n", (data
[5] & 0x7E) >> 1);
903 printf("\t\t\t Connected to Mesh Gate\n");
905 printf("\t\t\t Connected to AS\n");
906 printf("\t\t * Mesh Capability\n");
908 printf("\t\t\t Accepting Additional Mesh Peerings\n");
910 printf("\t\t\t MCCA Supported\n");
912 printf("\t\t\t MCCA Enabled\n");
914 printf("\t\t\t Forwarding\n");
916 printf("\t\t\t MBCA Supported\n");
918 printf("\t\t\t TBTT Adjusting\n");
920 printf("\t\t\t Mesh Power Save Level\n");
925 void (*print
)(const uint8_t type
, uint8_t len
, const uint8_t *data
);
926 uint8_t minlen
, maxlen
;
930 static void print_ie(const struct ie_print
*p
, const uint8_t type
,
931 uint8_t len
, const uint8_t *data
)
938 printf("\t%s:", p
->name
);
939 if (len
< p
->minlen
|| len
> p
->maxlen
) {
941 printf(" <invalid: %d bytes:", len
);
942 for (i
= 0; i
< len
; i
++)
943 printf(" %.02x", data
[i
]);
946 printf(" <invalid: 1 byte: %.02x>\n", data
[0]);
948 printf(" <invalid: no data>\n");
952 p
->print(type
, len
, data
);
955 #define PRINT_IGN { \
962 static const struct ie_print ieprinters
[] = {
963 [0] = { "SSID", print_ssid
, 0, 32, BIT(PRINT_SCAN
) | BIT(PRINT_LINK
), },
964 [1] = { "Supported rates", print_supprates
, 0, 255, BIT(PRINT_SCAN
), },
965 [3] = { "DS Parameter set", print_ds
, 1, 1, BIT(PRINT_SCAN
), },
966 [5] = { "TIM", print_tim
, 4, 255, BIT(PRINT_SCAN
), },
967 [6] = { "IBSS ATIM window", print_ibssatim
, 2, 2, BIT(PRINT_SCAN
), },
968 [7] = { "Country", print_country
, 3, 255, BIT(PRINT_SCAN
), },
969 [11] = { "BSS Load", print_bss_load
, 5, 5, BIT(PRINT_SCAN
), },
970 [32] = { "Power constraint", print_powerconstraint
, 1, 1, BIT(PRINT_SCAN
), },
971 [35] = { "TPC report", print_tpcreport
, 2, 2, BIT(PRINT_SCAN
), },
972 [42] = { "ERP", print_erp
, 1, 255, BIT(PRINT_SCAN
), },
973 [45] = { "HT capabilities", print_ht_capa
, 26, 26, BIT(PRINT_SCAN
), },
974 [47] = { "ERP D4.0", print_erp
, 1, 255, BIT(PRINT_SCAN
), },
975 [74] = { "Overlapping BSS scan params", print_obss_scan_params
, 14, 255, BIT(PRINT_SCAN
), },
976 [61] = { "HT operation", print_ht_op
, 22, 22, BIT(PRINT_SCAN
), },
977 [62] = { "Secondary Channel Offset", print_secchan_offs
, 1, 1, BIT(PRINT_SCAN
), },
978 [191] = { "VHT capabilities", print_vht_capa
, 12, 255, BIT(PRINT_SCAN
), },
979 [192] = { "VHT operation", print_vht_oper
, 5, 255, BIT(PRINT_SCAN
), },
980 [48] = { "RSN", print_rsn
, 2, 255, BIT(PRINT_SCAN
), },
981 [50] = { "Extended supported rates", print_supprates
, 0, 255, BIT(PRINT_SCAN
), },
982 [113] = { "MESH Configuration", print_mesh_conf
, 7, 7, BIT(PRINT_SCAN
), },
983 [114] = { "MESH ID", print_ssid
, 0, 32, BIT(PRINT_SCAN
) | BIT(PRINT_LINK
), },
984 [127] = { "Extended capabilities", print_capabilities
, 0, 255, BIT(PRINT_SCAN
), },
985 [107] = { "802.11u Interworking", print_interworking
, 0, 255, BIT(PRINT_SCAN
), },
986 [108] = { "802.11u Advertisement", print_11u_advert
, 0, 255, BIT(PRINT_SCAN
), },
989 static void print_wifi_wpa(const uint8_t type
, uint8_t len
, const uint8_t *data
)
991 print_rsn_ie("TKIP", "IEEE 802.1X", len
, data
);
994 static bool print_wifi_wmm_param(const uint8_t *data
, uint8_t len
)
997 static const char *aci_tbl
[] = { "BE", "BK", "VI", "VO" };
1003 printf("Parameter: not version 1: ");
1007 printf("\t * Parameter version 1");
1012 printf("\n\t\t * u-APSD");
1016 for (i
= 0; i
< 4; i
++) {
1017 printf("\n\t\t * %s:", aci_tbl
[(data
[0] >> 5) & 3]);
1020 printf(" CW %d-%d", (1 << (data
[1] & 0xf)) - 1,
1021 (1 << (data
[1] >> 4)) - 1);
1022 printf(", AIFSN %d", data
[0] & 0xf);
1023 if (data
[2] | data
[3])
1024 printf(", TXOP %d usec", (data
[2] + (data
[3] << 8)) * 32);
1032 printf("invalid: ");
1036 static void print_wifi_wmm(const uint8_t type
, uint8_t len
, const uint8_t *data
)
1042 printf(" information:");
1045 if (print_wifi_wmm_param(data
+ 1, len
- 1))
1049 printf(" type %d:", data
[0]);
1053 for(i
= 1; i
< len
; i
++)
1054 printf(" %.02x", data
[i
]);
1058 static const char * wifi_wps_dev_passwd_id(uint16_t id
)
1062 return "Default (PIN)";
1064 return "User-specified";
1066 return "Machine-specified";
1070 return "PushButton";
1072 return "Registrar-specified";
1078 static void print_wifi_wps(const uint8_t type
, uint8_t len
, const uint8_t *data
)
1081 __u16 subtype
, sublen
;
1084 subtype
= (data
[0] << 8) + data
[1];
1085 sublen
= (data
[2] << 8) + data
[3];
1091 tab_on_first(&first
);
1092 printf("\t * Version: %d.%d\n", data
[4] >> 4, data
[4] & 0xF);
1095 tab_on_first(&first
);
1096 printf("\t * Device name: %.*s\n", sublen
, data
+ 4);
1100 tab_on_first(&first
);
1102 printf("\t * Device Password ID: (invalid "
1103 "length %d)\n", sublen
);
1106 id
= data
[4] << 8 | data
[5];
1107 printf("\t * Device Password ID: %u (%s)\n",
1108 id
, wifi_wps_dev_passwd_id(id
));
1112 tab_on_first(&first
);
1113 printf("\t * Manufacturer: %.*s\n", sublen
, data
+ 4);
1116 tab_on_first(&first
);
1117 printf("\t * Model: %.*s\n", sublen
, data
+ 4);
1120 tab_on_first(&first
);
1121 printf("\t * Model Number: %.*s\n", sublen
, data
+ 4);
1125 tab_on_first(&first
);
1126 printf("\t * Response Type: %d%s\n",
1127 val
, val
== 3 ? " (AP)" : "");
1132 tab_on_first(&first
);
1133 printf("\t * RF Bands: 0x%x\n", val
);
1138 tab_on_first(&first
);
1139 printf("\t * Selected Registrar: 0x%x\n", val
);
1143 tab_on_first(&first
);
1144 printf("\t * Serial Number: %.*s\n", sublen
, data
+ 4);
1148 tab_on_first(&first
);
1149 printf("\t * Wi-Fi Protected Setup State: %d%s%s\n",
1151 val
== 1 ? " (Unconfigured)" : "",
1152 val
== 2 ? " (Configured)" : "");
1156 tab_on_first(&first
);
1157 printf("\t * UUID: ");
1159 printf("(invalid, length=%d)\n", sublen
);
1162 printf("%02x%02x%02x%02x-%02x%02x-%02x%02x-"
1163 "%02x%02x-%02x%02x%02x%02x%02x%02x\n",
1164 data
[4], data
[5], data
[6], data
[7],
1165 data
[8], data
[9], data
[10], data
[11],
1166 data
[12], data
[13], data
[14], data
[15],
1167 data
[16], data
[17], data
[18], data
[19]);
1170 tab_on_first(&first
);
1172 printf("\t * Primary Device Type: (invalid "
1173 "length %d)\n", sublen
);
1176 printf("\t * Primary Device Type: "
1177 "%u-%02x%02x%02x%02x-%u\n",
1178 data
[4] << 8 | data
[5],
1179 data
[6], data
[7], data
[8], data
[9],
1180 data
[10] << 8 | data
[11]);
1185 tab_on_first(&first
);
1186 printf("\t * AP setup locked: 0x%.2x\n", val
);
1191 __u16 meth
= (data
[4] << 8) + data
[5];
1193 tab_on_first(&first
);
1194 printf("\t * %sConfig methods:",
1195 subtype
== 0x1053 ? "Selected Registrar ": "");
1196 #define T(bit, name) do { \
1197 if (meth & (1<<bit)) { \
1217 const __u8
*subdata
= data
+ 4;
1218 __u16 tmplen
= sublen
;
1220 tab_on_first(&first
);
1221 printf("\t * Unknown TLV (%#.4x, %d bytes):",
1224 printf(" %.2x", *subdata
);
1238 printf("\t\t * bogus tail data (%d):", len
);
1240 printf(" %.2x", *data
);
1248 static const struct ie_print wifiprinters
[] = {
1249 [1] = { "WPA", print_wifi_wpa
, 2, 255, BIT(PRINT_SCAN
), },
1250 [2] = { "WMM", print_wifi_wmm
, 1, 255, BIT(PRINT_SCAN
), },
1251 [4] = { "WPS", print_wifi_wps
, 0, 255, BIT(PRINT_SCAN
), },
1254 static inline void print_p2p(const uint8_t type
, uint8_t len
, const uint8_t *data
)
1262 sublen
= (data
[2] << 8) + data
[1];
1264 if (sublen
> len
- 3)
1268 case 0x02: /* capability */
1269 tab_on_first(&first
);
1271 printf("\t * malformed capability\n");
1274 printf("\t * Group capa: 0x%.2x, Device capa: 0x%.2x\n",
1277 case 0x0d: /* device info */
1278 if (sublen
< 6 + 2 + 8 + 1) {
1279 printf("\t * malformed device info\n");
1282 /* fall through for now */
1283 case 0x00: /* status */
1284 case 0x01: /* minor reason */
1285 case 0x03: /* device ID */
1286 case 0x04: /* GO intent */
1287 case 0x05: /* configuration timeout */
1288 case 0x06: /* listen channel */
1289 case 0x07: /* group BSSID */
1290 case 0x08: /* ext listen timing */
1291 case 0x09: /* intended interface address */
1292 case 0x0a: /* manageability */
1293 case 0x0b: /* channel list */
1294 case 0x0c: /* NoA */
1295 case 0x0e: /* group info */
1296 case 0x0f: /* group ID */
1297 case 0x10: /* interface */
1298 case 0x11: /* operating channel */
1299 case 0x12: /* invitation flags */
1300 case 0xdd: /* vendor specific */
1302 const __u8
*subdata
= data
+ 4;
1303 __u16 tmplen
= sublen
;
1305 tab_on_first(&first
);
1306 printf("\t * Unknown TLV (%#.2x, %d bytes):",
1309 printf(" %.2x", *subdata
);
1323 tab_on_first(&first
);
1324 printf("\t * bogus tail data (%d):", len
);
1326 printf(" %.2x", *data
);
1334 static const struct ie_print wfa_printers
[] = {
1335 [9] = { "P2P", print_p2p
, 2, 255, BIT(PRINT_SCAN
), },
1338 static void print_vendor(unsigned char len
, unsigned char *data
,
1339 bool unknown
, enum print_ie_type ptype
)
1344 printf("\tVendor specific: <too short> data:");
1345 for(i
= 0; i
< len
; i
++)
1346 printf(" %.02x", data
[i
]);
1351 if (len
>= 4 && memcmp(data
, ms_oui
, 3) == 0) {
1352 if (data
[3] < ARRAY_SIZE(wifiprinters
) &&
1353 wifiprinters
[data
[3]].name
&&
1354 wifiprinters
[data
[3]].flags
& BIT(ptype
)) {
1355 print_ie(&wifiprinters
[data
[3]], data
[3], len
- 4, data
+ 4);
1360 printf("\tMS/WiFi %#.2x, data:", data
[3]);
1361 for(i
= 0; i
< len
- 4; i
++)
1362 printf(" %.02x", data
[i
+ 4]);
1367 if (len
>= 4 && memcmp(data
, wfa_oui
, 3) == 0) {
1368 if (data
[3] < ARRAY_SIZE(wfa_printers
) &&
1369 wfa_printers
[data
[3]].name
&&
1370 wfa_printers
[data
[3]].flags
& BIT(ptype
)) {
1371 print_ie(&wfa_printers
[data
[3]], data
[3], len
- 4, data
+ 4);
1376 printf("\tWFA %#.2x, data:", data
[3]);
1377 for(i
= 0; i
< len
- 4; i
++)
1378 printf(" %.02x", data
[i
+ 4]);
1386 printf("\tVendor specific: OUI %.2x:%.2x:%.2x, data:",
1387 data
[0], data
[1], data
[2]);
1388 for (i
= 3; i
< len
; i
++)
1389 printf(" %.2x", data
[i
]);
1393 void print_ies(unsigned char *ie
, int ielen
, bool unknown
,
1394 enum print_ie_type ptype
)
1396 while (ielen
>= 2 && ielen
>= ie
[1]) {
1397 if (ie
[0] < ARRAY_SIZE(ieprinters
) &&
1398 ieprinters
[ie
[0]].name
&&
1399 ieprinters
[ie
[0]].flags
& BIT(ptype
)) {
1400 print_ie(&ieprinters
[ie
[0]], ie
[0], ie
[1], ie
+ 2);
1401 } else if (ie
[0] == 221 /* vendor */) {
1402 print_vendor(ie
[1], ie
+ 2, unknown
, ptype
);
1403 } else if (unknown
) {
1406 printf("\tUnknown IE (%d):", ie
[0]);
1407 for (i
=0; i
<ie
[1]; i
++)
1408 printf(" %.2x", ie
[2+i
]);
1416 static void print_capa_dmg(__u16 capa
)
1418 switch (capa
& WLAN_CAPABILITY_DMG_TYPE_MASK
) {
1419 case WLAN_CAPABILITY_DMG_TYPE_AP
:
1422 case WLAN_CAPABILITY_DMG_TYPE_PBSS
:
1425 case WLAN_CAPABILITY_DMG_TYPE_IBSS
:
1426 printf(" DMG_IBSS");
1430 if (capa
& WLAN_CAPABILITY_DMG_CBAP_ONLY
)
1431 printf(" CBAP_Only");
1432 if (capa
& WLAN_CAPABILITY_DMG_CBAP_SOURCE
)
1433 printf(" CBAP_Src");
1434 if (capa
& WLAN_CAPABILITY_DMG_PRIVACY
)
1436 if (capa
& WLAN_CAPABILITY_DMG_ECPAC
)
1438 if (capa
& WLAN_CAPABILITY_DMG_SPECTRUM_MGMT
)
1439 printf(" SpectrumMgmt");
1440 if (capa
& WLAN_CAPABILITY_DMG_RADIO_MEASURE
)
1441 printf(" RadioMeasure");
1444 static void print_capa_non_dmg(__u16 capa
)
1446 if (capa
& WLAN_CAPABILITY_ESS
)
1448 if (capa
& WLAN_CAPABILITY_IBSS
)
1450 if (capa
& WLAN_CAPABILITY_CF_POLLABLE
)
1451 printf(" CfPollable");
1452 if (capa
& WLAN_CAPABILITY_CF_POLL_REQUEST
)
1453 printf(" CfPollReq");
1454 if (capa
& WLAN_CAPABILITY_PRIVACY
)
1456 if (capa
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
1457 printf(" ShortPreamble");
1458 if (capa
& WLAN_CAPABILITY_PBCC
)
1460 if (capa
& WLAN_CAPABILITY_CHANNEL_AGILITY
)
1461 printf(" ChannelAgility");
1462 if (capa
& WLAN_CAPABILITY_SPECTRUM_MGMT
)
1463 printf(" SpectrumMgmt");
1464 if (capa
& WLAN_CAPABILITY_QOS
)
1466 if (capa
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
1467 printf(" ShortSlotTime");
1468 if (capa
& WLAN_CAPABILITY_APSD
)
1470 if (capa
& WLAN_CAPABILITY_RADIO_MEASURE
)
1471 printf(" RadioMeasure");
1472 if (capa
& WLAN_CAPABILITY_DSSS_OFDM
)
1473 printf(" DSSS-OFDM");
1474 if (capa
& WLAN_CAPABILITY_DEL_BACK
)
1475 printf(" DelayedBACK");
1476 if (capa
& WLAN_CAPABILITY_IMM_BACK
)
1477 printf(" ImmediateBACK");
1480 static int print_bss_handler(struct nl_msg
*msg
, void *arg
)
1482 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
1483 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
1484 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1485 char mac_addr
[20], dev
[20];
1486 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1487 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1488 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1489 [NL80211_BSS_BSSID
] = { },
1490 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1491 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1492 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
1493 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1494 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1495 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1496 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1497 [NL80211_BSS_BEACON_IES
] = { },
1499 struct scan_params
*params
= arg
;
1500 int show
= params
->show_both_ie_sets
? 2 : 1;
1501 bool is_dmg
= false;
1503 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
1504 genlmsg_attrlen(gnlh
, 0), NULL
);
1506 if (!tb
[NL80211_ATTR_BSS
]) {
1507 fprintf(stderr
, "bss info missing!\n");
1510 if (nla_parse_nested(bss
, NL80211_BSS_MAX
,
1511 tb
[NL80211_ATTR_BSS
],
1513 fprintf(stderr
, "failed to parse nested attributes!\n");
1517 if (!bss
[NL80211_BSS_BSSID
])
1520 mac_addr_n2a(mac_addr
, nla_data(bss
[NL80211_BSS_BSSID
]));
1521 printf("BSS %s", mac_addr
);
1522 if (tb
[NL80211_ATTR_IFINDEX
]) {
1523 if_indextoname(nla_get_u32(tb
[NL80211_ATTR_IFINDEX
]), dev
);
1524 printf("(on %s)", dev
);
1527 if (bss
[NL80211_BSS_STATUS
]) {
1528 switch (nla_get_u32(bss
[NL80211_BSS_STATUS
])) {
1529 case NL80211_BSS_STATUS_AUTHENTICATED
:
1530 printf(" -- authenticated");
1532 case NL80211_BSS_STATUS_ASSOCIATED
:
1533 printf(" -- associated");
1535 case NL80211_BSS_STATUS_IBSS_JOINED
:
1536 printf(" -- joined");
1539 printf(" -- unknown status: %d",
1540 nla_get_u32(bss
[NL80211_BSS_STATUS
]));
1546 if (bss
[NL80211_BSS_TSF
]) {
1547 unsigned long long tsf
;
1548 tsf
= (unsigned long long)nla_get_u64(bss
[NL80211_BSS_TSF
]);
1549 printf("\tTSF: %llu usec (%llud, %.2lld:%.2llu:%.2llu)\n",
1550 tsf
, tsf
/1000/1000/60/60/24, (tsf
/1000/1000/60/60) % 24,
1551 (tsf
/1000/1000/60) % 60, (tsf
/1000/1000) % 60);
1553 if (bss
[NL80211_BSS_FREQUENCY
]) {
1554 int freq
= nla_get_u32(bss
[NL80211_BSS_FREQUENCY
]);
1555 printf("\tfreq: %d\n", freq
);
1559 if (bss
[NL80211_BSS_BEACON_INTERVAL
])
1560 printf("\tbeacon interval: %d TUs\n",
1561 nla_get_u16(bss
[NL80211_BSS_BEACON_INTERVAL
]));
1562 if (bss
[NL80211_BSS_CAPABILITY
]) {
1563 __u16 capa
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
1564 printf("\tcapability:");
1566 print_capa_dmg(capa
);
1568 print_capa_non_dmg(capa
);
1569 printf(" (0x%.4x)\n", capa
);
1571 if (bss
[NL80211_BSS_SIGNAL_MBM
]) {
1572 int s
= nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]);
1573 printf("\tsignal: %d.%.2d dBm\n", s
/100, s
%100);
1575 if (bss
[NL80211_BSS_SIGNAL_UNSPEC
]) {
1576 unsigned char s
= nla_get_u8(bss
[NL80211_BSS_SIGNAL_UNSPEC
]);
1577 printf("\tsignal: %d/100\n", s
);
1579 if (bss
[NL80211_BSS_SEEN_MS_AGO
]) {
1580 int age
= nla_get_u32(bss
[NL80211_BSS_SEEN_MS_AGO
]);
1581 printf("\tlast seen: %d ms ago\n", age
);
1584 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
] && show
--) {
1585 if (bss
[NL80211_BSS_BEACON_IES
])
1586 printf("\tInformation elements from Probe Response "
1588 print_ies(nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]),
1589 nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]),
1590 params
->unknown
, params
->type
);
1592 if (bss
[NL80211_BSS_BEACON_IES
] && show
--) {
1593 printf("\tInformation elements from Beacon frame:\n");
1594 print_ies(nla_data(bss
[NL80211_BSS_BEACON_IES
]),
1595 nla_len(bss
[NL80211_BSS_BEACON_IES
]),
1596 params
->unknown
, params
->type
);
1602 static struct scan_params scan_params
;
1604 static int handle_scan_dump(struct nl80211_state
*state
,
1607 int argc
, char **argv
,
1613 memset(&scan_params
, 0, sizeof(scan_params
));
1615 if (argc
== 1 && !strcmp(argv
[0], "-u"))
1616 scan_params
.unknown
= true;
1617 else if (argc
== 1 && !strcmp(argv
[0], "-b"))
1618 scan_params
.show_both_ie_sets
= true;
1620 scan_params
.type
= PRINT_SCAN
;
1622 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, print_bss_handler
,
1627 static int handle_scan_combined(struct nl80211_state
*state
,
1630 int argc
, char **argv
,
1634 static char *dump_argv
[] = {
1640 static const __u32 cmds
[] = {
1641 NL80211_CMD_NEW_SCAN_RESULTS
,
1642 NL80211_CMD_SCAN_ABORTED
,
1644 int trig_argc
, dump_argc
, err
;
1646 if (argc
>= 3 && !strcmp(argv
[2], "-u")) {
1648 dump_argv
[3] = "-u";
1649 } else if (argc
>= 3 && !strcmp(argv
[2], "-b")) {
1651 dump_argv
[3] = "-b";
1655 trig_argc
= 3 + (argc
- 2) + (3 - dump_argc
);
1656 trig_argv
= calloc(trig_argc
, sizeof(*trig_argv
));
1659 trig_argv
[0] = argv
[0];
1660 trig_argv
[1] = "scan";
1661 trig_argv
[2] = "trigger";
1663 for (i
= 0; i
< argc
- 2 - (dump_argc
- 3); i
++)
1664 trig_argv
[i
+ 3] = argv
[i
+ 2 + (dump_argc
- 3)];
1665 err
= handle_cmd(state
, id
, trig_argc
, trig_argv
);
1671 * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION
1673 * This code has a bug, which requires creating a separate
1674 * nl80211 socket to fix:
1675 * It is possible for a NL80211_CMD_NEW_SCAN_RESULTS or
1676 * NL80211_CMD_SCAN_ABORTED message to be sent by the kernel
1677 * before (!) we listen to it, because we only start listening
1678 * after we send our scan request.
1680 * Doing it the other way around has a race condition as well,
1681 * if you first open the events socket you may get a notification
1682 * for a previous scan.
1684 * The only proper way to fix this would be to listen to events
1685 * before sending the command, and for the kernel to send the
1686 * scan request along with the event, so that you can match up
1687 * whether the scan you requested was finished or aborted (this
1688 * may result in processing a scan that another application
1689 * requested, but that doesn't seem to be a problem).
1691 * Alas, the kernel doesn't do that (yet).
1694 if (listen_events(state
, ARRAY_SIZE(cmds
), cmds
) ==
1695 NL80211_CMD_SCAN_ABORTED
) {
1696 printf("scan aborted!\n");
1700 dump_argv
[0] = argv
[0];
1701 return handle_cmd(state
, id
, dump_argc
, dump_argv
);
1703 TOPLEVEL(scan
, "[-u] [freq <freq>*] [ies <hex as 00:11:..>] [meshid <meshid>] [lowpri,flush,ap-force] [ssid <ssid>*|passive]", 0, 0,
1704 CIB_NETDEV
, handle_scan_combined
,
1705 "Scan on the given frequencies and probe for the given SSIDs\n"
1706 "(or wildcard if not given) unless passive scanning is requested.\n"
1707 "If -u is specified print unknown data in the scan results.\n"
1708 "Specified (vendor) IEs must be well-formed.");
1709 COMMAND(scan
, dump
, "[-u]",
1710 NL80211_CMD_GET_SCAN
, NLM_F_DUMP
, CIB_NETDEV
, handle_scan_dump
,
1711 "Dump the current scan results. If -u is specified, print unknown\n"
1712 "data in scan results.");
1713 COMMAND(scan
, trigger
, "[freq <freq>*] [ies <hex as 00:11:..>] [meshid <meshid>] [lowpri,flush,ap-force] [ssid <ssid>*|passive]",
1714 NL80211_CMD_TRIGGER_SCAN
, 0, CIB_NETDEV
, handle_scan
,
1715 "Trigger a scan on the given frequencies with probing for the given\n"
1716 "SSIDs (or wildcard if not given) unless passive scanning is requested.");