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crypto: aead - Add type-safe function for freeing instances

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This patch adds a type-safe function for freeing AEAD instances
to struct aead_instance.  This replaces the existing free function
in struct crypto_template which does not know the type of the
instance that it's freeing.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-07-09 07:17:17 +08:00
parent 319382a697
commit ba75e15fa0
2 changed files with 14 additions and 0 deletions
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13
crypto/aead.c
View File

@ -307,9 +307,22 @@ static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
seq_printf(m, "geniv : <none>\n");
}
static void crypto_aead_free_instance(struct crypto_instance *inst)
{
struct aead_instance *aead = aead_instance(inst);
if (!aead->free) {
inst->tmpl->free(inst);
return;
}
aead->free(aead);
}
static const struct crypto_type crypto_new_aead_type = {
.extsize = crypto_alg_extsize,
.init_tfm = crypto_aead_init_tfm,
.free = crypto_aead_free_instance,
#ifdef CONFIG_PROC_FS
.show = crypto_aead_show,
#endif

1
include/crypto/internal/aead.h
View File

@ -21,6 +21,7 @@
struct rtattr;
struct aead_instance {
void (*free)(struct aead_instance *inst);
union {
struct {
char head[offsetof(struct aead_alg, base)];