netdev - Re: [PATCH v2] vmxnet3: disable rx data ring on dma allocation failure

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Message-ID: <CAP1Q3XSvz60Lo10j7RUJR7qmFLv=cMMkaN_EZ1q2YuP1VE6xxw@mail.gmail.com>
Date: Sun, 2 Jun 2024 23:49:48 -0700
From: Ronak Doshi <ronak.doshi@...adcom.com>
To: Matthias Stocker <mstocker@...racuda.com>
Cc: kuba@...nel.org, doshir@...are.com, pv-drivers@...are.com, 
	netdev@...r.kernel.org
Subject: Re: [PATCH v2] vmxnet3: disable rx data ring on dma allocation failure

Hi,

> When vmxnet3_rq_create() fails to allocate memory for rq->data_ring.base,
> the subsequent call to vmxnet3_rq_destroy_all_rxdataring does not reset
> rq->data_ring.desc_size for the data ring that failed, which presumably
> causes the hypervisor to reference it on packet reception.
>
> To fix this bug, rq->data_ring.desc_size needs to be set to 0 to tell
> the hypervisor to disable this feature.
>

Reviewed-by: Ronak Doshi <ronak.doshi@...adcom.com>

Thanks,
Ronak

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