I'm confused.

On Tue, 2014-03-18 at 20:32 -0700, beh...@converseincode.com wrote:


>       struct scatterlist assoc, pt, ct[2];
> -     struct {
> -             struct aead_request     req;
> -             u8                      priv[crypto_aead_reqsize(tfm)];
> -     } aead_req;
>  
> -     memset(&aead_req, 0, sizeof(aead_req));
> +     char aead_req_data[sizeof(struct aead_request) +
> +             crypto_aead_reqsize(tfm)]
> +             __aligned(__alignof__(struct aead_request));

This looks fine, though I'd argue the blank lines before/after it
shouldn't be there, and the indentation should be a bit different, but I
was willing to clean that up.

>  int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
>                             u8 *data, size_t data_len, u8 *mic)
>  {
>       struct scatterlist assoc, pt, ct[2];
> -     struct {
> -             struct aead_request     req;
> -             u8                      priv[crypto_aead_reqsize(tfm)];
> -     } aead_req;
>  
> -     memset(&aead_req, 0, sizeof(aead_req));
> +     char aead_req_data[sizeof(struct aead_request) +
> +                             crypto_aead_reqsize(tfm) +
> +                             CRYPTO_MINALIGN] CRYPTO_MINALIGN_ATTR;

But why does the second instance use a completely different size/align?

johannes

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