netdev - Re: net: tso: add UDP segmentation support: adds regression for ax200 upload

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Message-ID: <5d89fd24-f00a-7e70-00ce-83529f13b05e@candelatech.com>
Date:   Thu, 17 Dec 2020 12:40:26 -0800
From:   Ben Greear <greearb@...delatech.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     netdev <netdev@...r.kernel.org>
Subject: Re: net: tso: add UDP segmentation support: adds regression for ax200
 upload

On 12/17/20 10:20 AM, Eric Dumazet wrote:
> On Thu, Dec 17, 2020 at 7:13 PM Ben Greear <greearb@...delatech.com> wrote:
>>
> 
>>
>> It is the iwlwifi/mvm logic that supports ax200.
> 
> Let me ask again :
> 
> I see two different potential call points :
> 
> drivers/net/wireless/intel/iwlwifi/pcie/tx.c:1529:
> tso_build_hdr(skb, hdr_page->pos, &tso, data_left, !total_len);
> drivers/net/wireless/intel/iwlwifi/queue/tx.c:427:
> tso_build_hdr(skb, hdr_page->pos, &tso, data_left, !total_len);
> 
> To the best of your knowledge, which one would be used in your case ?
> 
> Both are horribly complex, I do not want to spend time studying two
> implementations.

It is the queue/tx.c code that executes on my system, verified with
printk.

Thanks,
Ben

> 
> Thanks.
> 


-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com