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// SPDX-License-Identifier: GPL-2.0
/* OpenVPN data channel offload
*
* Copyright (C) 2012-2025 OpenVPN, Inc.
*
* Author: James Yonan <james@openvpn.net>
* Antonio Quartulli <antonio@openvpn.net>
*/
#include <linux/netdevice.h>
#include <linux/socket.h>
#include "ovpnpriv.h"
#include "bind.h"
#include "peer.h"
/**
* ovpn_bind_from_sockaddr - retrieve binding matching sockaddr
* @ss: the sockaddr to match
*
* Return: the bind matching the passed sockaddr if found, NULL otherwise
*/
struct ovpn_bind *ovpn_bind_from_sockaddr(const struct sockaddr_storage *ss)
{
struct ovpn_bind *bind;
size_t sa_len;
if (ss->ss_family == AF_INET)
sa_len = sizeof(struct sockaddr_in);
else if (ss->ss_family == AF_INET6)
sa_len = sizeof(struct sockaddr_in6);
else
return ERR_PTR(-EAFNOSUPPORT);
bind = kzalloc(sizeof(*bind), GFP_ATOMIC);
if (unlikely(!bind))
return ERR_PTR(-ENOMEM);
memcpy(&bind->remote, ss, sa_len);
return bind;
}
/**
* ovpn_bind_reset - assign new binding to peer
* @peer: the peer whose binding has to be replaced
* @new: the new bind to assign
*/
void ovpn_bind_reset(struct ovpn_peer *peer, struct ovpn_bind *new)
{
lockdep_assert_held(&peer->lock);
kfree_rcu(rcu_replace_pointer(peer->bind, new,
lockdep_is_held(&peer->lock)), rcu);
}
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