Re: [PATCH v8 01/26] tcp: authopt: Initial support and key management

[Paolo Abeni]

On Mon, 2022-09-05 at 10:05 +0300, Leonard Crestez wrote:
[...]
> diff --git a/net/ipv4/tcp_authopt.c b/net/ipv4/tcp_authopt.c
> new file mode 100644
> index 000000000000..d38e9c89c89d
> --- /dev/null
> +++ b/net/ipv4/tcp_authopt.c
> @@ -0,0 +1,317 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +
> +#include <net/tcp_authopt.h>
> +#include <net/ipv6.h>
> +#include <net/tcp.h>
> +#include <linux/kref.h>
> +
> +/* This is enabled when first struct tcp_authopt_info is allocated and never released */
> +DEFINE_STATIC_KEY_FALSE(tcp_authopt_needed_key);
> +EXPORT_SYMBOL(tcp_authopt_needed_key);
> +
> +static inline struct netns_tcp_authopt *sock_net_tcp_authopt(const struct sock *sk)
> +{
> +	return &sock_net(sk)->tcp_authopt;
> +}

Please have a look at PW report for this series, there are a bunch of
issues to be addressed, e.g. above 'static inline' should be just
'static'


> +
> +static void tcp_authopt_key_release_kref(struct kref *ref)
> +{
> +	struct tcp_authopt_key_info *key = container_of(ref, struct tcp_authopt_key_info, ref);
> +
> +	kfree_rcu(key, rcu);
> +}
> +
> +static void tcp_authopt_key_put(struct tcp_authopt_key_info *key)
> +{
> +	if (key)
> +		kref_put(&key->ref, tcp_authopt_key_release_kref);
> +}
> +
> +static void tcp_authopt_key_del(struct netns_tcp_authopt *net,
> +				struct tcp_authopt_key_info *key)
> +{
> +	lockdep_assert_held(&net->mutex);
> +	hlist_del_rcu(&key->node);
> +	key->flags |= TCP_AUTHOPT_KEY_DEL;
> +	kref_put(&key->ref, tcp_authopt_key_release_kref);
> +}
> +
> +/* Free info and keys.
> + * Don't touch tp->authopt_info, it might not even be assigned yes.
> + */
> +void tcp_authopt_free(struct sock *sk, struct tcp_authopt_info *info)

this need to be 'static'.

I'm sorry to bring the next topic this late (If already discussed, I
missed that point), is possible to split this series in smaller chunks?


Cheers,

Paolo