crypto4xx_alloc_sa
rc = crypto4xx_alloc_sa(ctx, SA_AES128_LEN + (keylen-16) / 4);
rc = crypto4xx_alloc_sa(ctx, SA_AES128_CCM_LEN + (keylen - 16) / 4);
rc = crypto4xx_alloc_sa(ctx, SA_AES128_GCM_LEN + (keylen - 16) / 4);
int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size);