Re: [RFC PATCH v3] crypto: Add IV generation algorithms

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Hi Gilad,

On 18 January 2017 at 20:51, Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx> wrote:
> I have some review comments and a bug report -

Thank you very much for testing this on ARM and for the comments.

> I'm pretty sure this needs to be
>
>  n2 = bio_segments(ctx->bio_out);

Yes you are right, that was a typo :)

>> +
>> +       rinfo.is_write = bio_data_dir(ctx->bio_in) == WRITE;
>
> Please consider wrapping the above boolean expression in parenthesis.

Well, I can do that to enhance the clarity.

>> +       rinfo.iv_sector = ctx->cc_sector;
>> +       rinfo.nents = nents;
>> +       rinfo.iv = iv;
>> +
>> +       skcipher_request_set_crypt(req, dmreq->sg_in, dmreq->sg_out,
>
> Also, where do the scatterlist src2 and dst2 that you use
> sg_set_page() get sg_init_table() called on?
> I couldn't figure it out...

Thank you pointing this out. I missed out to add sg_init_table(src2, 1)
and sg_init_table(dst2, 1), but sg_set_page is used in geniv_iter_block.
This is probably the reason for the panic on ARM platform. However it
ran fine under qemu-x86. May be I should setup an arm platform too
for testing.

Regards,
Binoy

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