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authorHerbert Xu <herbert@gondor.apana.org.au>2006-09-21 11:39:29 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2006-09-21 11:39:29 +1000
commit6bfd48096ff8ecabf955958b51ddfa7988eb0a14 (patch)
tree813799f00d8402348ba6817953b1c631541be66c /include
parent492e2b63eb10c28f4f0b694264d74a8755cd1be0 (diff)
[CRYPTO] api: Added spawns
Spawns lock a specific crypto algorithm in place. They can then be used with crypto_spawn_tfm to allocate a tfm for that algorithm. When the base algorithm of a spawn is deregistered, all its spawns will be automatically removed. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/crypto/algapi.h11
-rw-r--r--include/linux/crypto.h4
2 files changed, 15 insertions, 0 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index ffec530d52f..b20f4bdb23b 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -36,10 +36,21 @@ struct crypto_template {
char name[CRYPTO_MAX_ALG_NAME];
};
+struct crypto_spawn {
+ struct list_head list;
+ struct crypto_alg *alg;
+ struct crypto_instance *inst;
+};
+
int crypto_register_template(struct crypto_template *tmpl);
void crypto_unregister_template(struct crypto_template *tmpl);
struct crypto_template *crypto_lookup_template(const char *name);
+int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
+ struct crypto_instance *inst);
+void crypto_drop_spawn(struct crypto_spawn *spawn);
+struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn);
+
static inline void *crypto_instance_ctx(struct crypto_instance *inst)
{
return inst->__ctx;
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 85f73c38191..40a6330abc8 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -35,6 +35,8 @@
#define CRYPTO_ALG_TYPE_COMPRESS 0x00000004
#define CRYPTO_ALG_LARVAL 0x00000010
+#define CRYPTO_ALG_DEAD 0x00000020
+#define CRYPTO_ALG_DYING 0x00000040
/*
* Transform masks and values (for crt_flags).
@@ -145,6 +147,8 @@ struct compress_alg {
struct crypto_alg {
struct list_head cra_list;
+ struct list_head cra_users;
+
u32 cra_flags;
unsigned int cra_blocksize;
unsigned int cra_ctxsize;