aesni_xts_ctx
struct aesni_xts_ctx *ctx = aes_xts_ctx(tfm);
const struct aesni_xts_ctx *ctx = aes_xts_ctx(tfm);
const struct aesni_xts_ctx *ctx = aes_xts_ctx(tfm);
#define XTS_AES_CTX_SIZE (sizeof(struct aesni_xts_ctx) + AESNI_ALIGN_EXTRA)
static inline struct aesni_xts_ctx *aes_xts_ctx(struct crypto_skcipher *tfm)