crypto: cryptd - Add helpers to check whether a tfm is queued
This patch adds helpers to check whether a given tfm is currently
queued. This is meant to be used by ablk_helper and similar
entities to ensure that no reordering is introduced because of
requests queued in cryptd with respect to requests being processed
in softirq context.
The per-cpu queue length limit is also increased to 1000 in line
with network limits.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/include/crypto/cryptd.h b/include/crypto/cryptd.h
index 1547f54..bc792d5 100644
--- a/include/crypto/cryptd.h
+++ b/include/crypto/cryptd.h
@@ -31,6 +31,7 @@
struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
u32 type, u32 mask);
struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm);
+bool cryptd_ablkcipher_queued(struct cryptd_ablkcipher *tfm);
void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm);
struct cryptd_ahash {
@@ -48,6 +49,8 @@
u32 type, u32 mask);
struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm);
struct shash_desc *cryptd_shash_desc(struct ahash_request *req);
+/* Must be called without moving CPUs. */
+bool cryptd_ahash_queued(struct cryptd_ahash *tfm);
void cryptd_free_ahash(struct cryptd_ahash *tfm);
struct cryptd_aead {
@@ -64,6 +67,8 @@
u32 type, u32 mask);
struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm);
+/* Must be called without moving CPUs. */
+bool cryptd_aead_queued(struct cryptd_aead *tfm);
void cryptd_free_aead(struct cryptd_aead *tfm);