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monitor: Decode information elements binary into individual tags

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This commit is contained in:
Marcel Holtmann 2014-08-10 00:14:29 -07:00
parent 0394da4ce2
commit c50d624e55
2 changed files with 32 additions and 8 deletions
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3
Makefile.am
View File

@ -51,7 +51,8 @@ client_iwctl_LDADD = ell/libell-internal.la
monitor_iwmon_SOURCES = monitor/main.c linux/nl80211.h \ monitor_iwmon_SOURCES = monitor/main.c linux/nl80211.h \
monitor/nlmon.h monitor/nlmon.c \ monitor/nlmon.h monitor/nlmon.c \
monitor/pcap.h monitor/pcap.c \ monitor/pcap.h monitor/pcap.c \
monitor/display.h monitor/display.c monitor/display.h monitor/display.c \
src/ie.h src/ie.c
monitor_iwmon_LDADD = ell/libell-internal.la monitor_iwmon_LDADD = ell/libell-internal.la
noinst_PROGRAMS = tools/hwsim noinst_PROGRAMS = tools/hwsim

37
monitor/nlmon.c
View File

@ -39,6 +39,7 @@
#include <ell/ell.h> #include <ell/ell.h>
#include "linux/nl80211.h" #include "linux/nl80211.h"
#include "src/ie.h"
#include "monitor/display.h" #include "monitor/display.h"
#include "monitor/nlmon.h" #include "monitor/nlmon.h"
@ -147,6 +148,23 @@ static void print_hexdump(unsigned int level,
} }
} }
static void print_ie(unsigned int level, const char *label,
const void *data, uint16_t size)
{
struct ie_tlv_iter iter;
print_attr(level, "%s: len %u", label, size);
ie_tlv_iter_init(&iter, data, size);
while (ie_tlv_iter_next(&iter)) {
uint8_t tag = ie_tlv_iter_get_tag(&iter);
print_attr(level + 1, "Tag %u: len %u", tag, iter.len);
print_hexdump(level + 1, iter.data, iter.len);
}
}
typedef void (*attr_func_t) (unsigned int level, const char *label, typedef void (*attr_func_t) (unsigned int level, const char *label,
const void *data, uint16_t size); const void *data, uint16_t size);
enum attr_type { enum attr_type {
@ -208,12 +226,14 @@ static const struct attr_entry bss_table[] = {
{ NL80211_BSS_TSF, "TSF", ATTR_U64 }, { NL80211_BSS_TSF, "TSF", ATTR_U64 },
{ NL80211_BSS_BEACON_INTERVAL, "Beacon Interval", ATTR_U16 }, { NL80211_BSS_BEACON_INTERVAL, "Beacon Interval", ATTR_U16 },
{ NL80211_BSS_CAPABILITY, "Capability", ATTR_U16 }, { NL80211_BSS_CAPABILITY, "Capability", ATTR_U16 },
{ NL80211_BSS_INFORMATION_ELEMENTS, "IEs", ATTR_BINARY }, { NL80211_BSS_INFORMATION_ELEMENTS, "IEs",
ATTR_CUSTOM, { .function = print_ie } },
{ NL80211_BSS_SIGNAL_MBM, "Signal mBm", ATTR_S32 }, { NL80211_BSS_SIGNAL_MBM, "Signal mBm", ATTR_S32 },
{ NL80211_BSS_SIGNAL_UNSPEC, "Signal Unspec",ATTR_U8 }, { NL80211_BSS_SIGNAL_UNSPEC, "Signal Unspec",ATTR_U8 },
{ NL80211_BSS_STATUS, "Status", ATTR_U32 }, { NL80211_BSS_STATUS, "Status", ATTR_U32 },
{ NL80211_BSS_SEEN_MS_AGO, "Seen ms ago", ATTR_U32 }, { NL80211_BSS_SEEN_MS_AGO, "Seen ms ago", ATTR_U32 },
{ NL80211_BSS_BEACON_IES, "Beacon IEs", ATTR_BINARY }, { NL80211_BSS_BEACON_IES, "Beacon IEs",
ATTR_CUSTOM, { .function = print_ie } },
{ NL80211_BSS_CHAN_WIDTH, "Chan Width", ATTR_U32 }, { NL80211_BSS_CHAN_WIDTH, "Chan Width", ATTR_U32 },
{ } { }
}; };
@ -303,7 +323,8 @@ static const struct attr_entry attr_table[] = {
{ NL80211_ATTR_MGMT_SUBTYPE, { NL80211_ATTR_MGMT_SUBTYPE,
"Management Subtype", ATTR_U8 }, "Management Subtype", ATTR_U8 },
{ NL80211_ATTR_IE, { NL80211_ATTR_IE,
"Information Elements", ATTR_BINARY }, "Information Elements", ATTR_CUSTOM,
{ .function = print_ie } },
{ NL80211_ATTR_MAX_NUM_SCAN_SSIDS, { NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
"Max Number Scan SSIDs", ATTR_U8 }, "Max Number Scan SSIDs", ATTR_U8 },
{ NL80211_ATTR_SCAN_FREQUENCIES, { NL80211_ATTR_SCAN_FREQUENCIES,
@ -376,9 +397,9 @@ static const struct attr_entry attr_table[] = {
{ NL80211_ATTR_AKM_SUITES, { NL80211_ATTR_AKM_SUITES,
"AKM Suites" }, "AKM Suites" },
{ NL80211_ATTR_REQ_IE, { NL80211_ATTR_REQ_IE,
"Request IE" }, "Request IE", ATTR_CUSTOM, { .function = print_ie } },
{ NL80211_ATTR_RESP_IE, { NL80211_ATTR_RESP_IE,
"Response IE" }, "Response IE", ATTR_CUSTOM, { .function = print_ie } },
{ NL80211_ATTR_PREV_BSSID, { NL80211_ATTR_PREV_BSSID,
"Previous BSSID", ATTR_ADDRESS }, "Previous BSSID", ATTR_ADDRESS },
{ NL80211_ATTR_KEY, { NL80211_ATTR_KEY,
@ -477,9 +498,11 @@ static const struct attr_entry attr_table[] = {
{ NL80211_ATTR_HIDDEN_SSID, { NL80211_ATTR_HIDDEN_SSID,
"Hidden SSID", ATTR_U32 }, "Hidden SSID", ATTR_U32 },
{ NL80211_ATTR_IE_PROBE_RESP, { NL80211_ATTR_IE_PROBE_RESP,
"IE Probe Response" }, "IE Probe Response", ATTR_CUSTOM,
{ .function = print_ie } },
{ NL80211_ATTR_IE_ASSOC_RESP, { NL80211_ATTR_IE_ASSOC_RESP,
"IE Assoc Response" }, "IE Assoc Response", ATTR_CUSTOM,
{ .function = print_ie } },
{ NL80211_ATTR_STA_WME, { NL80211_ATTR_STA_WME,
"Station WME" }, "Station WME" },
{ NL80211_ATTR_SUPPORT_AP_UAPSD, { NL80211_ATTR_SUPPORT_AP_UAPSD,