This shows how old a scan result entry is.
---
Example:
# ./iw eth1 scan trigger freq 2412
# sleep 1
# ./iw eth1 scan dump | grep seen
last seen: 832 ms ago
last seen: 852 ms ago
last seen: 852 ms ago
# sleep 1
# ./iw eth1 scan dump | grep seen
last seen: 1836 ms ago
last seen: 1856 ms ago
last seen: 1856 ms ago
Index: iw/scan.c
===================================================================
--- iw.orig/scan.c 2009-09-21 14:06:47.000000000 +0200
+++ iw/scan.c 2009-09-24 09:57:02.000000000 +0200
@@ -754,6 +754,7 @@ static int print_bss_handler(struct nl_m
[NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
[NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
[NL80211_BSS_STATUS] = { .type = NLA_U32 },
+ [NL80211_BSS_AGE_MS] = { .type = NLA_U32 },
};
struct scan_params *params = arg;
@@ -845,6 +846,10 @@ static int print_bss_handler(struct nl_m
unsigned char s = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
printf("\tsignal: %d/100\n", s);
}
+ if (bss[NL80211_BSS_AGE_MS]) {
+ int age = nla_get_u32(bss[NL80211_BSS_AGE_MS]);
+ printf("\tlast seen: %d ms ago\n", age);
+ }
if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
print_ies(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]),
nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]),
Index: iw/nl80211.h
===================================================================
--- iw.orig/nl80211.h 2009-09-24 09:55:57.000000000 +0200
+++ iw/nl80211.h 2009-09-24 09:56:29.000000000 +0200
@@ -1261,6 +1261,7 @@ enum nl80211_channel_type {
* @NL80211_BSS_SIGNAL_UNSPEC: signal strength of the probe response/beacon
* in unspecified units, scaled to 0..100 (u8)
* @NL80211_BSS_STATUS: status, if this BSS is "used"
+ * @NL80211_BSS_AGE_MS: age of this BSS entry in ms
* @__NL80211_BSS_AFTER_LAST: internal
* @NL80211_BSS_MAX: highest BSS attribute
*/
@@ -1275,6 +1276,7 @@ enum nl80211_bss {
NL80211_BSS_SIGNAL_MBM,
NL80211_BSS_SIGNAL_UNSPEC,
NL80211_BSS_STATUS,
+ NL80211_BSS_AGE_MS,
/* keep last */
__NL80211_BSS_AFTER_LAST,
--
http://www.holgerschurig.de
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