On 11/01/2011 01:59 PM, Jamie Iles wrote: > Hi Nikos, > > On Tue, Nov 01, 2011 at 01:43:26PM +0100, Nikos Mavrogiannopoulos wrote: [...] >> I suppose that no answer means there is no way. In that case would you >> consider this or a similar patch to indicate whether a driver provides >> an algorithm not available to userspace via other means (e.g. >> instruction set)? This would allow users of the kernel interfaces to >> avoid using software implementations or implementations that are >> available to userspace anyway. > [...] >> diff --git a/include/linux/crypto.h b/include/linux/crypto.h >> index de9adec..3e14cee 100644 >> --- a/include/linux/crypto.h >> +++ b/include/linux/crypto.h >> @@ -51,6 +51,11 @@ >> #define CRYPTO_ALG_DYING 0x00000040 >> #define CRYPTO_ALG_ASYNC 0x00000080 >> >> +/* Set this bit if the algorithm provided is hardware accelerated but >> + * not available to userspace via instruction set or so. >> + */ >> +#define CRYPTO_ALG_KERN_ONLY 0x00000100 > Would it be a bit clearer if this was CRYPTO_ALG_IS_UNPRIVILIGED and was > set the other way round (so instruction set based ones that users can > use)? I had to do a double take with KERN_ONLY. Could also be, although I think both names are not so intuitive :) Note btw that the flag value in the patch is not correct (it overlaps with another one). regards, Nikos -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
