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SubjectRe: [PATCH v7 00/19] simplify crypto wait for async op
On Tue, Sep 5, 2017 at 2:23 PM, Harsh Jain <harshjain.prof@gmail.com> wrote:
> On Sun, Sep 3, 2017 at 11:47 AM, Gilad Ben-Yossef <gilad@benyossef.com> wrote:
>> On Thu, Aug 31, 2017 at 3:31 PM, Harsh Jain <harshjain.prof@gmail.com> wrote:
>>> HI Gilad,
>>>
>>> I think we need an update in ESP also. Now EBUSY return means driver
>>> has accepted, Packet should not be dropped in
>>>
>>> esp_output_tail() function.
>>
>> Good catch. You are right and the same holds true for ah_output() in ah4.c.
>>
>> But I do wonder, the code there now treats -EBUSY as a special case
>> and returns NET_XMIT_DROP
>> but if an AEAD or AHASH transformation return some other error, like
>> -ENOMEM or -EINVAL shouldn't
>> we return NET_XMIT_DROP in that case too?
> I think we should not, XMIT_DROP implies drop current packet only,
> later on when device is recovered from busy state, Upper layer
> protocol(TCP) will re-transmit the packet. It helps in flow control.
>>

I see. Makes sense.

Thanks,
Gilad

--
Gilad Ben-Yossef
Chief Coffee Drinker

"If you take a class in large-scale robotics, can you end up in a
situation where the homework eats your dog?"
-- Jean-Baptiste Queru

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