From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
This patch adds an optional struct crypto_alg->cra_check_optimized() caller
that can be used by libcrypto algorithms in order to load an architecture
dependent optimized / HW offload module.
This includes adding the call to alg->cra_check_optimized() inside of
crypto_larval_lookup() once the initial generic algorithm has been
loaded via request_module().
Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---
crypto/api.c | 6 +++++-
include/linux/crypto.h | 1 +
2 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/crypto/api.c b/crypto/api.c
index 033a714..4dcbef6 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -226,8 +226,12 @@ struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask)
alg = crypto_alg_lookup(name, type, mask);
}
- if (alg)
+ if (alg) {
+ if (alg->cra_check_optimized)
+ alg->cra_check_optimized(alg);
+
return crypto_is_larval(alg) ? crypto_larval_wait(alg) : alg;
+ }
return crypto_larval_add(name, type, mask);
}
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index a6a7a1c..ea7c426 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -295,6 +295,7 @@ struct crypto_alg {
int (*cra_init)(struct crypto_tfm *tfm);
void (*cra_exit)(struct crypto_tfm *tfm);
+ void (*cra_check_optimized)(struct crypto_alg *alg);
void (*cra_destroy)(struct crypto_alg *alg);
struct module *cra_module;
--
1.5.6.5
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