diff mbox series

[3/4] mt76: mt7915: reject duplicated twt flows

Message ID 20220505082554.16656-3-chui-hao.chiu@mediatek.com (mailing list archive)
State New, archived
Headers show
Series [1/4] mt76: mt7915: update mt7986 patch in mt7986_wmac_adie_patch_7976() | expand

Commit Message

Peter Chiu May 5, 2022, 8:25 a.m. UTC
Reject twt flows with the same parameters to prevent some potential issues
causing by duplicated establishment.

Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Reviewed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
---
 .../net/wireless/mediatek/mt76/mt7915/mac.c   | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

Comments

Lorenzo Bianconi May 5, 2022, 12:22 p.m. UTC | #1
> Reject twt flows with the same parameters to prevent some potential issues
> causing by duplicated establishment.
> 
> Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
> Reviewed-by: Shayne Chen <shayne.chen@mediatek.com>
> Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
> ---
>  .../net/wireless/mediatek/mt76/mt7915/mac.c   | 31 +++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
> index 94a1871fbf43..ff60a3d2d26d 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
> @@ -2601,6 +2601,34 @@ static int mt7915_mac_check_twt_req(struct ieee80211_twt_setup *twt)
>  	return 0;
>  }
>  
> +static inline bool
> +mt7915_mac_twt_param_equal(struct mt7915_sta *msta,
> +			   struct ieee80211_twt_params *twt_agrt)

nit: please do not use inline in .c files.

Regards,
Lorenzo

> +{
> +	u16 type = le16_to_cpu(twt_agrt->req_type);
> +	u8 exp;
> +	int i;
> +
> +	exp = FIELD_GET(IEEE80211_TWT_REQTYPE_WAKE_INT_EXP, type);
> +	for (i = 0; i < MT7915_MAX_STA_TWT_AGRT; i++) {
> +		struct mt7915_twt_flow *f;
> +
> +		if (!(msta->twt.flowid_mask & BIT(i)))
> +			continue;
> +
> +		f = &msta->twt.flow[i];
> +		if (f->duration == twt_agrt->min_twt_dur &&
> +		    f->mantissa == twt_agrt->mantissa &&
> +		    f->exp == exp &&
> +		    f->protection == !!(type & IEEE80211_TWT_REQTYPE_PROTECTION) &&
> +		    f->flowtype == !!(type & IEEE80211_TWT_REQTYPE_FLOWTYPE) &&
> +		    f->trigger == !!(type & IEEE80211_TWT_REQTYPE_TRIGGER))
> +			return true;
> +	}
> +
> +	return false;
> +}
> +
>  void mt7915_mac_add_twt_setup(struct ieee80211_hw *hw,
>  			      struct ieee80211_sta *sta,
>  			      struct ieee80211_twt_setup *twt)
> @@ -2634,6 +2662,9 @@ void mt7915_mac_add_twt_setup(struct ieee80211_hw *hw,
>  	exp = FIELD_GET(IEEE80211_TWT_REQTYPE_WAKE_INT_EXP, req_type);
>  	sta_setup_cmd = FIELD_GET(IEEE80211_TWT_REQTYPE_SETUP_CMD, req_type);
>  
> +	if (mt7915_mac_twt_param_equal(msta, twt_agrt))
> +		goto unlock;
> +
>  	flow = &msta->twt.flow[flowid];
>  	memset(flow, 0, sizeof(*flow));
>  	INIT_LIST_HEAD(&flow->list);
> -- 
> 2.18.0
>
Felix Fietkau May 5, 2022, 12:26 p.m. UTC | #2
On 05.05.22 14:22, Lorenzo Bianconi wrote:
>> Reject twt flows with the same parameters to prevent some potential issues
>> causing by duplicated establishment.
>> 
>> Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
>> Reviewed-by: Shayne Chen <shayne.chen@mediatek.com>
>> Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
>> ---
>>  .../net/wireless/mediatek/mt76/mt7915/mac.c   | 31 +++++++++++++++++++
>>  1 file changed, 31 insertions(+)
>> 
>> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
>> index 94a1871fbf43..ff60a3d2d26d 100644
>> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
>> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
>> @@ -2601,6 +2601,34 @@ static int mt7915_mac_check_twt_req(struct ieee80211_twt_setup *twt)
>>  	return 0;
>>  }
>>  
>> +static inline bool
>> +mt7915_mac_twt_param_equal(struct mt7915_sta *msta,
>> +			   struct ieee80211_twt_params *twt_agrt)
> 
> nit: please do not use inline in .c files.
I applied the patch already, so I folded in a fix for this.

- Felix
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 94a1871fbf43..ff60a3d2d26d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -2601,6 +2601,34 @@  static int mt7915_mac_check_twt_req(struct ieee80211_twt_setup *twt)
 	return 0;
 }
 
+static inline bool
+mt7915_mac_twt_param_equal(struct mt7915_sta *msta,
+			   struct ieee80211_twt_params *twt_agrt)
+{
+	u16 type = le16_to_cpu(twt_agrt->req_type);
+	u8 exp;
+	int i;
+
+	exp = FIELD_GET(IEEE80211_TWT_REQTYPE_WAKE_INT_EXP, type);
+	for (i = 0; i < MT7915_MAX_STA_TWT_AGRT; i++) {
+		struct mt7915_twt_flow *f;
+
+		if (!(msta->twt.flowid_mask & BIT(i)))
+			continue;
+
+		f = &msta->twt.flow[i];
+		if (f->duration == twt_agrt->min_twt_dur &&
+		    f->mantissa == twt_agrt->mantissa &&
+		    f->exp == exp &&
+		    f->protection == !!(type & IEEE80211_TWT_REQTYPE_PROTECTION) &&
+		    f->flowtype == !!(type & IEEE80211_TWT_REQTYPE_FLOWTYPE) &&
+		    f->trigger == !!(type & IEEE80211_TWT_REQTYPE_TRIGGER))
+			return true;
+	}
+
+	return false;
+}
+
 void mt7915_mac_add_twt_setup(struct ieee80211_hw *hw,
 			      struct ieee80211_sta *sta,
 			      struct ieee80211_twt_setup *twt)
@@ -2634,6 +2662,9 @@  void mt7915_mac_add_twt_setup(struct ieee80211_hw *hw,
 	exp = FIELD_GET(IEEE80211_TWT_REQTYPE_WAKE_INT_EXP, req_type);
 	sta_setup_cmd = FIELD_GET(IEEE80211_TWT_REQTYPE_SETUP_CMD, req_type);
 
+	if (mt7915_mac_twt_param_equal(msta, twt_agrt))
+		goto unlock;
+
 	flow = &msta->twt.flow[flowid];
 	memset(flow, 0, sizeof(*flow));
 	INIT_LIST_HEAD(&flow->list);