// 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); }