linux-kernel - Re: [PATCH 2/2] mt76: mt7615: update peer's bssid when state transition changes

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Date:   Wed, 12 Jun 2019 10:26:19 +0200
From:   Lorenzo Bianconi <lorenzo@...nel.org>
To:     Ryder Lee <ryder.lee@...iatek.com>
Cc:     Felix Fietkau <nbd@....name>,
        Lorenzo Bianconi <lorenzo.bianconi@...hat.com>,
        Roy Luo <royluo@...gle.com>, YF Luo <yf.luo@...iatek.com>,
        Yiwei Chung <yiwei.chung@...iatek.com>,
        Sean Wang <sean.wang@...iatek.com>,
        linux-wireless@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] mt76: mt7615: update peer's bssid when state
 transition changes

> Driver should update peer's bssid and bss information when
> state transition changes.
> 
> Signed-off-by: Ryder Lee <ryder.lee@...iatek.com>
> ---
>  .../net/wireless/mediatek/mt76/mt7615/main.c  |  5 +-
>  .../net/wireless/mediatek/mt76/mt7615/mcu.c   | 49 ++++++++++---------
>  2 files changed, 27 insertions(+), 27 deletions(-)
> 

[...]

> diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
> index e82086eb8aa4..8fc12cd37906 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
> @@ -741,17 +741,6 @@ int mt7615_mcu_set_bss_info(struct mt7615_dev *dev,
>  	u8 *buf, *data, tx_wlan_idx = 0;
>  	struct req_hdr *hdr;
>  
> -	if (en) {
> -		len += sizeof(struct bss_info_omac);
> -		features |= BIT(BSS_INFO_OMAC);
> -		if (mvif->omac_idx > EXT_BSSID_START) {
> -			len += sizeof(struct bss_info_ext_bss);
> -			features |= BIT(BSS_INFO_EXT_BSS);
> -			ntlv++;
> -		}
> -		ntlv++;
> -	}
> -
>  	switch (vif->type) {
>  	case NL80211_IFTYPE_AP:
>  	case NL80211_IFTYPE_MESH_POINT:
> @@ -759,22 +748,23 @@ int mt7615_mcu_set_bss_info(struct mt7615_dev *dev,
>  		conn_type = CONNECTION_INFRA_AP;
>  		break;
>  	case NL80211_IFTYPE_STATION: {
> -		struct ieee80211_sta *sta;
> -		struct mt7615_sta *msta;
> -
> -		rcu_read_lock();
> -
> -		sta = ieee80211_find_sta(vif, vif->bss_conf.bssid);
> -		if (!sta) {
> +		/* TODO: enable BSS_INFO_UAPSD & BSS_INFO_PM */
> +		if (en) {
> +			struct ieee80211_sta *sta;
> +			struct mt7615_sta *msta;
> +
> +			rcu_read_lock();
> +			sta = ieee80211_find_sta(vif, vif->bss_conf.bssid);
> +			if (!sta) {
> +				rcu_read_unlock();
> +				return -EINVAL;
> +			}
> +
> +			msta = (struct mt7615_sta *)sta->drv_priv;
> +			tx_wlan_idx = msta->wcid.idx;
>  			rcu_read_unlock();
> -			return -EINVAL;
>  		}
> -
> -		msta = (struct mt7615_sta *)sta->drv_priv;
> -		tx_wlan_idx = msta->wcid.idx;
>  		conn_type = CONNECTION_INFRA_STA;
> -
> -		rcu_read_unlock();
>  		break;
>  	}
>  	default:
> @@ -782,6 +772,17 @@ int mt7615_mcu_set_bss_info(struct mt7615_dev *dev,
>  		break;
>  	}
>  
> +	if (en) {
> +		len += sizeof(struct bss_info_omac);
> +		features |= BIT(BSS_INFO_OMAC);
> +		if (mvif->omac_idx > EXT_BSSID_START) {
> +			len += sizeof(struct bss_info_ext_bss);
> +			features |= BIT(BSS_INFO_EXT_BSS);
> +			ntlv++;
> +		}
> +		ntlv++;
> +	}

What did you move this chunk down?

Regards,
Lorenzo

> +
>  	buf = kzalloc(len, GFP_KERNEL);
>  	if (!buf)
>  		return -ENOMEM;
> -- 
> 2.18.0
> 

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