pcrypt_aead_ctx
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(aead);
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm);
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm);
inst->alg.base.cra_ctxsize = sizeof(struct pcrypt_aead_ctx);
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(parent);
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(parent);
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(aead);