linux-kernel - Re: [PATCH v2 4/5] mwifiex: Send DELBA requests according to spec

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Date:   Sat, 16 Oct 2021 17:33:17 +0200
From:   Jonas Dreßler <verdre@...d.nl>
To:     Pali Rohár <pali@...nel.org>
Cc:     Amitkumar Karwar <amitkarwar@...il.com>,
        Ganapathi Bhat <ganapathi017@...il.com>,
        Xinming Hu <huxinming820@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Tsuchiya Yuto <kitakar@...il.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Maximilian Luz <luzmaximilian@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH v2 4/5] mwifiex: Send DELBA requests according to spec

On 10/16/21 16:28, Pali Rohár wrote:
> On Saturday 16 October 2021 12:36:55 Jonas Dreßler wrote:
>> While looking at on-air packets using Wireshark, I noticed we're never
>> setting the initiator bit when sending DELBA requests to the AP: While
>> we set the bit on our del_ba_param_set bitmask, we forget to actually
>> copy that bitmask over to the command struct, which means we never
>> actually set the initiator bit.
>>
>> Fix that and copy the bitmask over to the host_cmd_ds_11n_delba command
>> struct.
>>
>> Signed-off-by: Jonas Dreßler <verdre@...d.nl>
> 
> Hello! This looks like is fixing mwifiex_send_delba() function which was
> added in initial mwifiex commit. So probably it should have following
> tag:
> 
> Fixes: 5e6e3a92b9a4 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
> 

Hi Pali,

thanks a lot for the quick review, I just addressed this in v3!

>> ---
>>   drivers/net/wireless/marvell/mwifiex/11n.c | 5 +++--
>>   1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/wireless/marvell/mwifiex/11n.c b/drivers/net/wireless/marvell/mwifiex/11n.c
>> index b0695432b26a..9ff2058bcd7e 100644
>> --- a/drivers/net/wireless/marvell/mwifiex/11n.c
>> +++ b/drivers/net/wireless/marvell/mwifiex/11n.c
>> @@ -657,14 +657,15 @@ int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac,
>>   	uint16_t del_ba_param_set;
>>   
>>   	memset(&delba, 0, sizeof(delba));
>> -	delba.del_ba_param_set = cpu_to_le16(tid << DELBA_TID_POS);
>>   
>> -	del_ba_param_set = le16_to_cpu(delba.del_ba_param_set);
>> +	del_ba_param_set = tid << DELBA_TID_POS;
>> +
>>   	if (initiator)
>>   		del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK;
>>   	else
>>   		del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK;
>>   
>> +	delba.del_ba_param_set = cpu_to_le16(del_ba_param_set);
>>   	memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN);
>>   
>>   	/* We don't wait for the response of this command */
>> -- 
>> 2.31.1
>>