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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-08-06 14:28:44 +0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2006-09-21 05:16:29 +0400 |
| commit | 6521f30273fbec65146a0f16de74b7b402b0f7b0 (patch) | |
| tree | 1e664f6c1a7c960c60c4cae01585933029f81a5f /include | |
| parent | 72fa491912689ca69dd15f4266945d2c2f2819f8 (diff) | |
| download | linux-6521f30273fbec65146a0f16de74b7b402b0f7b0.tar.xz | |
[CRYPTO] api: Add crypto_alg reference counting
Up until now we've relied on module reference counting to ensure that the
crypto_alg structures don't disappear from under us. This was good enough
as long as each crypto_alg came from exactly one module.
However, with parameterised crypto algorithms a crypto_alg object may need
two or more modules to operate. This means that we need to count the
references to the crypto_alg object directly.
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/linux/crypto.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/crypto.h b/include/linux/crypto.h index cb1e6631b132..7f57ff8ec975 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -17,6 +17,7 @@ #ifndef _LINUX_CRYPTO_H #define _LINUX_CRYPTO_H +#include <asm/atomic.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> @@ -148,6 +149,7 @@ struct crypto_alg { unsigned int cra_alignmask; int cra_priority; + atomic_t cra_refcnt; char cra_name[CRYPTO_MAX_ALG_NAME]; char cra_driver_name[CRYPTO_MAX_ALG_NAME]; @@ -160,6 +162,7 @@ struct crypto_alg { int (*cra_init)(struct crypto_tfm *tfm); void (*cra_exit)(struct crypto_tfm *tfm); + void (*cra_destroy)(struct crypto_alg *alg); struct module *cra_module; }; |