Add module parameter to allow forcing redirection of crypto requests to
cryptd worker threads. This allows these code paths to be actually tested
(easier).
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@xxxxxxxx>
---
arch/x86/crypto/ablk_helper.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/crypto/ablk_helper.c b/arch/x86/crypto/ablk_helper.c
index 43282fe..52385a3 100644
--- a/arch/x86/crypto/ablk_helper.c
+++ b/arch/x86/crypto/ablk_helper.c
@@ -33,6 +33,8 @@
#include <asm/i387.h>
#include <asm/crypto/ablk_helper.h>
+static int force_cryptd_redirect;
+
int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key,
unsigned int key_len)
{
@@ -70,7 +72,7 @@ int ablk_encrypt(struct ablkcipher_request *req)
struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
struct async_helper_ctx *ctx = crypto_ablkcipher_ctx(tfm);
- if (!irq_fpu_usable()) {
+ if (force_cryptd_redirect || !irq_fpu_usable()) {
struct ablkcipher_request *cryptd_req =
ablkcipher_request_ctx(req);
@@ -89,7 +91,7 @@ int ablk_decrypt(struct ablkcipher_request *req)
struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
struct async_helper_ctx *ctx = crypto_ablkcipher_ctx(tfm);
- if (!irq_fpu_usable()) {
+ if (force_cryptd_redirect || !irq_fpu_usable()) {
struct ablkcipher_request *cryptd_req =
ablkcipher_request_ctx(req);
@@ -146,4 +148,7 @@ int ablk_init(struct crypto_tfm *tfm)
}
EXPORT_SYMBOL_GPL(ablk_init);
+module_param(force_cryptd_redirect, int, 0);
+MODULE_PARM_DESC(force_cryptd_redirect,
+ "Force all crypto request to cryptd worker instead of using current context (Use only for testing purposes!)");
MODULE_LICENSE("GPL");
--
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