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From: Justin Chen <justin.chen@broadcom.com>
To: Florian Fainelli <florian.fainelli@broadcom.com>, netdev@vger.kernel.org
Cc: pabeni@redhat.com, kuba@kernel.org, edumazet@google.com,
	davem@davemloft.net, andrew+netdev@lunn.ch,
	bcm-kernel-feedback-list@broadcom.com
Subject: Re: [PATCH RFC net] net: bcmgenet: fix leaking and racing timeout handler
Date: Wed, 25 Mar 2026 15:11:16 -0700	[thread overview]
Message-ID: <eb7b544f-7fde-4b3e-863c-633c04329edd@broadcom.com> (raw)
In-Reply-To: <77801f99-517e-4b60-846a-f26469a7526a@broadcom.com>



On 3/25/26 3:00 PM, Florian Fainelli wrote:
> On 3/25/26 10:36, justin.chen@broadcom.com wrote:
>> From: Justin Chen <justin.chen@broadcom.com>
>>
>> The bcmgenet_timeout handler tries to take down all tx queues when
>> a single queue times out. This is over zealous and causes many race
>> conditions with queues that are still chugging along. Instead lets
>> only restart the timed out queue.
>>
>> While reclaiming the tx queue we fast forward the write pointer to
>> drop any data in flight. These dropped frames are not added back
>> to the pool of free bds. We also need to tell the netdev that we
>> are dropping said data.
>>
>> Signed-off-by: Justin Chen <justin.chen@broadcom.com>
> 
> The first bits in bcmgenet_tx_reclaim would be fixing:
> 
> Fixes: f1bacae8b655 ("net: bcmgenet: support reclaiming unsent Tx packets")
> 
> and the other part in bcmgenet_tx_timeout() would have:
> 
> Fixes: 13ea657806cf ("net: bcmgenet: improve TX timeout")
> 
> Both fixes look good to me:
> 
> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>

Thanks. I will resend v2 as two patches once we get verification the 
patch is working as intended.

Justin

  reply	other threads:[~2026-03-25 22:11 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-25 17:36 [PATCH RFC net] net: bcmgenet: fix leaking and racing timeout handler justin.chen
2026-03-25 22:00 ` Florian Fainelli
2026-03-25 22:11   ` Justin Chen [this message]
2026-03-26  8:05 ` Nicolai Buchwitz

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