@@ -668,6 +668,8 @@ static int crypto_skcipher_init_tfm(struct crypto_tfm *tfm)
struct crypto_skcipher *skcipher = __crypto_skcipher_cast(tfm);
struct skcipher_alg *alg = crypto_skcipher_alg(skcipher);
+ skcipher->reqsize = alg->reqsize;
+
skcipher_set_needkey(skcipher);
if (alg->exit)
@@ -797,7 +799,7 @@ static int skcipher_prepare_alg(struct skcipher_alg *alg)
struct crypto_alg *base = &alg->base;
if (alg->ivsize > PAGE_SIZE / 8 || alg->chunksize > PAGE_SIZE / 8 ||
- alg->walksize > PAGE_SIZE / 8)
+ alg->walksize > PAGE_SIZE / 8 || alg->reqsize > PAGE_SIZE / 8)
return -EINVAL;
if (!alg->chunksize)
@@ -100,6 +100,7 @@ struct crypto_sync_skcipher {
* @final_chunksize: Number of bytes that must be processed together
* at the end. If set to -1 then chaining is not
* possible.
+ * @reqsize: Size of the request data structure.
* @base: Definition of a generic crypto algorithm.
*
* All fields except @ivsize are mandatory and must be filled.
@@ -118,6 +119,7 @@ struct skcipher_alg {
unsigned int chunksize;
unsigned int walksize;
int final_chunksize;
+ unsigned int reqsize;
struct crypto_alg base;
};
As it is the reqsize field only exists on the tfm object which means that in order to set it you must provide an init function for the tfm, even if the size is actually static. This patch adds a reqsize field to the skcipher alg object which allows it to be set without having an init function. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> --- crypto/skcipher.c | 4 +++- include/crypto/skcipher.h | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-)