[PATCH 2/8] wifi: ath12k: support change_sta_links() mac80211 op

[Kalle Valo]

Baochen Qiang <quic_bqiang at quicinc.com> writes:

> On 11/6/2024 10:26 PM, Kalle Valo wrote:
>> From: Sriram R <quic_srirrama at quicinc.com>
>> 
>> Add ath12k_mac_op_change_sta_links() for adding and removing
>> link station.
>> 
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
>> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
>> 
>> Signed-off-by: Sriram R <quic_srirrama at quicinc.com>
>> Signed-off-by: Harshitha Prem <quic_hprem at quicinc.com>
>> Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>
>> ---
>>  drivers/net/wireless/ath/ath12k/mac.c | 97 ++++++++++++++++++++++++++-
>>  1 file changed, 96 insertions(+), 1 deletion(-)
>> 
>> diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
>> index 0ff886e4b3ed..c0cc4e51a4d1 100644
>> --- a/drivers/net/wireless/ath/ath12k/mac.c
>> +++ b/drivers/net/wireless/ath/ath12k/mac.c
>> @@ -5572,6 +5572,101 @@ static void ath12k_mac_op_sta_rc_update(struct ieee80211_hw *hw,
>>  	rcu_read_unlock();
>>  }
>>  
>> +static struct ath12k_link_sta *
>> +ath12k_mac_alloc_assign_link_sta(struct ath12k_hw *ah,
>> +				 struct ath12k_sta *ahsta,
>> +				 struct ath12k_vif *ahvif, u8 link_id)
>> +{
>> +	struct ath12k_link_sta *arsta;
>> +	int ret;
>> +
>> +	lockdep_assert_wiphy(ah->hw->wiphy);
>> +
>> +	if (link_id >= IEEE80211_MLD_MAX_NUM_LINKS)
>> +		return NULL;
>> +
>> +	arsta = wiphy_dereference(ah->hw->wiphy, ahsta->link[link_id]);
>> +	if (arsta)
>> +		return NULL;
>> +
>> +	arsta = kzalloc(sizeof(*arsta), GFP_KERNEL);
>
> kmalloc() is preferred as ath12k_mac_assign_link_sta() will do 'zero'?

That's true. Jeff, are you able to change this in the pending branch?

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