Re: [PATCH] ixp4xx_crypto panic with fragmented packets inscatterlist

[Herbert Xu]

Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote:
>
> I don't think you can use chained scatterlists unless the architecture
> supports it.  It's not a case that you have to flatten the chaining
> before passing it over to the arch - it seems you're not allowed to
> create a chained scatterlist in the first place:
> 
> static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents,
>                            struct scatterlist *sgl)
> {
> #ifndef ARCH_HAS_SG_CHAIN
>        BUG();
> #endif

The crypto layer does its own chaining.  However, this chaining
is not meant to be exposed to any external entities until generic
chaining has been ported everywhere.

Cheers,
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