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iwlwifi: mvm: differentiate net-detect from sched scan 

Net-detect scans were using the same type as sched scan, which was
causing the driver to return -EBUSY and prevent the system from
suspending if there was an ongoing scheduled scan.  To avoid this, add
a new type for net-detect and don't stop anything when it is
requested, so that the existing scheduled scan will be resumed when
the system wakes up.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Luciano Coelho 2015-03-20 16:11:28 +02:00 committed by Emmanuel Grumbach
parent 6749dd80bb
commit 19945dfb94
4 changed files with 19 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/iwlwifi/mvm/d3.c
View File

@ -981,7 +981,8 @@ iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
if (ret)
return ret;
ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies);
ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
IWL_MVM_SCAN_NETDETECT);
if (ret)
return ret;

2
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -2743,7 +2743,7 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
goto out;
}
ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies);
ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
out:
mutex_unlock(&mvm->mutex);

7
drivers/net/wireless/iwlwifi/mvm/mvm.h
View File

@ -448,14 +448,18 @@ extern const u8 tid_to_mac80211_ac[];
enum iwl_scan_status {
IWL_MVM_SCAN_REGULAR = BIT(0),
IWL_MVM_SCAN_SCHED = BIT(1),
IWL_MVM_SCAN_NETDETECT = BIT(2),
IWL_MVM_SCAN_STOPPING_REGULAR = BIT(8),
IWL_MVM_SCAN_STOPPING_SCHED = BIT(9),
IWL_MVM_SCAN_STOPPING_NETDETECT = BIT(10),
IWL_MVM_SCAN_REGULAR_MASK = IWL_MVM_SCAN_REGULAR |
IWL_MVM_SCAN_STOPPING_REGULAR,
IWL_MVM_SCAN_SCHED_MASK = IWL_MVM_SCAN_SCHED |
IWL_MVM_SCAN_STOPPING_SCHED,
IWL_MVM_SCAN_NETDETECT_MASK = IWL_MVM_SCAN_NETDETECT |
IWL_MVM_SCAN_STOPPING_NETDETECT,
IWL_MVM_SCAN_STOPPING_MASK = 0xff00,
IWL_MVM_SCAN_MASK = 0x00ff,
@ -1179,7 +1183,8 @@ int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct cfg80211_sched_scan_request *req,
struct ieee80211_scan_ies *ies);
struct ieee80211_scan_ies *ies,
int type);
int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify);
int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb,

12
drivers/net/wireless/iwlwifi/mvm/scan.c
View File

@ -1533,6 +1533,13 @@ static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
return -EBUSY;
return iwl_mvm_cancel_scan(mvm);
case IWL_MVM_SCAN_NETDETECT:
/* No need to stop anything for net-detect since the
* firmware is restarted anyway. This way, any sched
* scans that were running will be restarted when we
* resume.
*/
return 0;
default:
WARN_ON(1);
break;
@ -1574,7 +1581,8 @@ int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct cfg80211_sched_scan_request *req,
struct ieee80211_scan_ies *ies)
struct ieee80211_scan_ies *ies,
int type)
{
int ret;
@ -1585,7 +1593,7 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
return -EBUSY;
}
ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_SCHED);
ret = iwl_mvm_check_running_scans(mvm, type);
if (ret)
return ret;