On Sat, Nov 18, 2023 at 2:55 PM Vadim Fedorenko <vadfed@xxxxxxxx> wrote:
>
> +/**
> + * struct bpf_crypto_lskcipher_ctx - refcounted BPF sync skcipher context structure
> + * @tfm: The pointer to crypto_sync_skcipher struct.
> + * @rcu: The RCU head used to free the crypto context with RCU safety.
> + * @usage: Object reference counter. When the refcount goes to 0, the
> + * memory is released back to the BPF allocator, which provides
> + * RCU safety.
> + */
> +struct bpf_crypto_lskcipher_ctx {
> + struct crypto_lskcipher *tfm;
> + struct rcu_head rcu;
> + refcount_t usage;
> +};
> +
> +__bpf_kfunc_start_defs();
> +
> +/**
> + * bpf_crypto_lskcipher_ctx_create() - Create a mutable BPF crypto context.
Let's drop 'lskcipher' from the kfunc names and ctx struct.
bpf users don't need to know the internal implementation details.
bpf_crypto_encrypt/decrypt() is clear enough.
