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@xxxxxxxxxxxxxxxxxxx>
---
crypto/aead.c | 13 +++++++++++++
include/crypto/internal/aead.h | 1 +
2 files changed, 14 insertions(+)
diff --git a/crypto/aead.c b/crypto/aead.c
index 07bf997..8cd45a7 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -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
diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h
index c3942f4..a292e96 100644
--- a/include/crypto/internal/aead.h
+++ b/include/crypto/internal/aead.h
@@ -21,6 +21,7 @@
struct rtattr;
struct aead_instance {
+ void (*free)(struct aead_instance *inst);
union {
struct {
char head[offsetof(struct aead_alg, base)];
--
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