diff options
| author | Arik Nemtsov <arik@wizery.com> | 2015-01-22 14:24:44 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-02-01 15:57:22 +0200 |
| commit | b9dccdb33c4dc86922d025d02e91715ad9510732 (patch) | |
| tree | faf8f78fe4483cc81888f0a50029ff5b6ad8db6c /drivers/net/wireless/iwlwifi/mvm/mvm.h | |
| parent | 5cb1270143668fa72007b52a8be6b4aa2c182809 (diff) | |
iwlwifi: mvm: ignore stale TDLS ch-switch responses
During out-of-channel activities (e.g. scan) TDLS ch-switch responses from
a peer are kept in FW. These packets arrive only after the out-of-channel
activity is complete, which can be in the order of several seconds.
Since TDLS ch-sw has no dialog-token-like mechanism for distinguishing
sessions, use the GP2 time of the incoming ch-switch response to discern
validity. For this purpose record the GP2 time of an outgoing TDLS ch-sw
request and compare to the Rx time of the ch-sw response.
The methods works in practice since the GP2 time of FW-deferred Rx is
accurate and contains the real Rx timestamp.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/mvm.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/mvm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index fc80b7b43b2..ed097268a1b 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -798,6 +798,9 @@ struct iwl_mvm { struct cfg80211_chan_def chandef; struct sk_buff *skb; /* ch sw template */ u32 ch_sw_tm_ie; + + /* timestamp of last ch-sw request sent (GP2 time) */ + u32 sent_timestamp; } peer; } tdls_cs; |