On Tue, Apr 11, 2023 at 04:14:24PM +0800, Jia Jie Ho wrote:
>
> +static int starfive_hash_export(struct ahash_request *req, void *out)
> +{
> + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm);
> +
> + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk);
> + ahash_request_set_callback(&rctx->ahash_fbk_req,
> + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP,
> + req->base.complete, req->base.data);
> +
> + ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src,
> + req->result, req->nbytes);
> +
> + return crypto_ahash_export(&rctx->ahash_fbk_req, out);
> +}
You can't export a freshly created request. The fallback
request needs to have been created by the usual init/update
calls.
The export function should simply invoke export.
> +static int starfive_hash_cra_init_algs(struct crypto_tfm *tfm,
> + const char *algs_hmac_name,
> + unsigned int mode,
> + const char *alg_name)
> +{
> + struct starfive_cryp_ctx *ctx = crypto_tfm_ctx(tfm);
> + struct crypto_ahash *ahash = __crypto_ahash_cast(tfm);
> +
> + ctx->cryp = starfive_cryp_find_dev(ctx);
> +
> + if (!ctx->cryp)
> + return -ENODEV;
> +
> + ctx->ahash_fbk = crypto_alloc_ahash(alg_name, 0,
> + CRYPTO_ALG_NEED_FALLBACK);
> +
> + if (IS_ERR(ctx->ahash_fbk))
> + return dev_err_probe(ctx->cryp->dev, PTR_ERR(ctx->ahash_fbk),
> + "starfive_hash: Could not load fallback driver.\n");
> +
> + crypto_hash_alg_common(ahash)->statesize = crypto_ahash_statesize(ctx->ahash_fbk);
I've just posted a patch to linux-crypto to do this properly:
https://lore.kernel.org/linux-crypto/ZEEOXIHwqKblKfBJ@xxxxxxxxxxxxxxxxxxx/T/#u
Please switch to using the helper that I added.
> +static int starfive_hash256_setkey(struct crypto_ahash *tfm,
> + const u8 *key, unsigned int keylen)
> +{
> + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm);
> + unsigned int digestsize = crypto_ahash_digestsize(tfm);
> + unsigned int blocksize;
> + int ret = 0;
> +
> + blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
Please use crypto_ahash_blocksize. We should never use crypto_ahash_tfm
in new code.
> +static int starfive_hash_cra_sha224_init(struct crypto_tfm *tfm)
> +{
> + return starfive_hash_cra_init_algs(tfm, NULL,
> + STARFIVE_HASH_SHA224,
> + "sha224-generic");
> +}
Please switch to the new API and use init_tfm/exit_tfm instead of
cra_init/cra_exit.
Thanks,
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
