2019-04-12 21:37:16

by Ben Greear

[permalink] [raw]
Subject: [PATCH 1/2] wireless: Support auth-at-ms timer in sta-info

From: Ben Greear <[email protected]>

Report time stamp of when sta became authenticated.

Signed-off-by: Ben Greear <[email protected]>
---
include/net/cfg80211.h | 2 ++
include/uapi/linux/nl80211.h | 2 ++
net/wireless/nl80211.c | 1 +
3 files changed, 5 insertions(+)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index f49eb1464b7a..430501c09c01 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1268,6 +1268,7 @@ struct cfg80211_tid_stats {
* indicate the relevant values in this struct for them
* @connected_time: time(in secs) since a station is last connected
* @inactive_time: time since last station activity (tx/rx) in milliseconds
+ * @auth_at_ms: time in ms of the last assoc -> auth transition.
* @rx_bytes: bytes (size of MPDUs) received from this station
* @tx_bytes: bytes (size of MPDUs) transmitted to this station
* @llid: mesh local link id
@@ -1324,6 +1325,7 @@ struct station_info {
u64 filled;
u32 connected_time;
u32 inactive_time;
+ u64 auth_at_ms;
u64 rx_bytes;
u64 tx_bytes;
u16 llid;
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 0f03cfcda965..8d0b7a88877c 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -3079,6 +3079,7 @@ enum nl80211_sta_bss_param {
* @NL80211_STA_INFO_TX_DURATION: aggregate PPDU duration for all frames
* sent to the station (u64, usec)
* @NL80211_STA_INFO_AIRTIME_WEIGHT: current airtime weight for station (u16)
+ * @NL80211_STA_INFO_AUTH_AT_MS: Timestamp of last assoc -> auth transition, in ms
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@@ -3124,6 +3125,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_CONNECTED_TO_GATE,
NL80211_STA_INFO_TX_DURATION,
NL80211_STA_INFO_AIRTIME_WEIGHT,
+ NL80211_STA_INFO_AUTH_AT_MS,

/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index bcb432815c64..74be48c1ae02 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4763,6 +4763,7 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,

PUT_SINFO(CONNECTED_TIME, connected_time, u32);
PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
+ PUT_SINFO_U64(AUTH_AT_MS, auth_at_ms);

if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
--
2.20.1



2019-04-12 21:37:18

by Ben Greear

[permalink] [raw]
Subject: [PATCH 2/2] mac80211: add auth-at-ms support.

From: Ben Greear <[email protected]>

Report when sta becomes authenticated.

Signed-off-by: Ben Greear <[email protected]>
---
net/mac80211/sta_info.c | 3 +++
net/mac80211/sta_info.h | 2 ++
2 files changed, 5 insertions(+)

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 044120c45950..6dab7abe1603 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -1980,6 +1980,7 @@ int sta_info_move_state(struct sta_info *sta,
break;
case IEEE80211_STA_AUTHORIZED:
if (sta->sta_state == IEEE80211_STA_ASSOC) {
+ sta->auth_at_ms = ktime_to_ms(ktime_get_real());
ieee80211_vif_inc_num_mcast(sta->sdata);
set_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
ieee80211_check_fast_xmit(sta);
@@ -2197,6 +2198,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
BIT_ULL(NL80211_STA_INFO_STA_FLAGS) |
BIT_ULL(NL80211_STA_INFO_BSS_PARAM) |
BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) |
+ BIT_ULL(NL80211_STA_INFO_AUTH_AT_MS) |
BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC);

if (sdata->vif.type == NL80211_IFTYPE_STATION) {
@@ -2205,6 +2207,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
}

sinfo->connected_time = ktime_get_seconds() - sta->last_connected;
+ sinfo->auth_at_ms = sta->auth_at_ms;
sinfo->inactive_time =
jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta));

diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index c5d557032be5..97777978b8f5 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -455,6 +455,7 @@ struct ieee80211_sta_rx_stats {
* the station when it leaves powersave or polls for frames
* @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
* @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on
+ * @auth_at_ms: time (in ms) of last assoc -> auth transition
* @last_connected: time (in seconds) when a station got connected
* @last_seq_ctrl: last received seq/frag number from this STA (per TID
* plus one for non-QoS frames)
@@ -531,6 +532,7 @@ struct sta_info {
unsigned long driver_buffered_tids;
unsigned long txq_buffered_tids;

+ unsigned long auth_at_ms;
long last_connected;

/* Updated from RX path only, no locking requirements */
--
2.20.1


2019-04-15 11:15:46

by Johannes Berg

[permalink] [raw]
Subject: Re: [PATCH 1/2] wireless: Support auth-at-ms timer in sta-info

On Fri, 2019-04-12 at 14:37 -0700, [email protected] wrote:
> From: Ben Greear <[email protected]>
>
> Report time stamp of when sta became authenticated.

You didn't actually implement this ;-)

Did you mean associated?

> + * @auth_at_ms: time in ms of the last assoc -> auth transition.

There's commonly not really such a transition?

johannes


2019-04-15 16:32:30

by Ben Greear

[permalink] [raw]
Subject: Re: [PATCH 1/2] wireless: Support auth-at-ms timer in sta-info

On 4/15/19 4:15 AM, Johannes Berg wrote:
> On Fri, 2019-04-12 at 14:37 -0700, [email protected] wrote:
>> From: Ben Greear <[email protected]>
>>
>> Report time stamp of when sta became authenticated.
>
> You didn't actually implement this ;-)
>
> Did you mean associated?
>
>> + * @auth_at_ms: time in ms of the last assoc -> auth transition.
>
> There's commonly not really such a transition?

Oh, I guess AUTHORIZED is only when doing .1x authentication? My test case
was (luckly?) doing that, so I didn't notice the bug.

I'll change to setting the timer in the ASSOC state instead.

Thanks,
Ben

--
Ben Greear <[email protected]>
Candela Technologies Inc http://www.candelatech.com


2019-04-15 17:03:18

by Johannes Berg

[permalink] [raw]
Subject: Re: [PATCH 1/2] wireless: Support auth-at-ms timer in sta-info

On Mon, 2019-04-15 at 09:32 -0700, Ben Greear wrote:
> On 4/15/19 4:15 AM, Johannes Berg wrote:
> > On Fri, 2019-04-12 at 14:37 -0700, [email protected] wrote:
> > > From: Ben Greear <[email protected]>
> > >
> > > Report time stamp of when sta became authenticated.
> >
> > You didn't actually implement this ;-)
> >
> > Did you mean associated?
> >
> > > + * @auth_at_ms: time in ms of the last assoc -> auth transition.
> >
> > There's commonly not really such a transition?
>
> Oh, I guess AUTHORIZED is only when doing .1x authentication? My test case
> was (luckly?) doing that, so I didn't notice the bug.

Oh, you meant *authorized*... Most of the code uses "auth" ==
"authenticated" :-)

johannes