| 1 | |
| 2 | |
| 3 | *
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| 4 | * Copyright (C) 2012-2025 OpenVPN, Inc.
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| 5 | *
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| 6 | * Author: James Yonan <[email protected]>
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| 7 | * Antonio Quartulli <[email protected]>
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| 8 |
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| 9 |
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| 10 | #include <linux/netdevice.h>
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| 11 | #include <linux/socket.h>
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| 12 |
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| 13 | #include "ovpnpriv.h"
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| 14 | #include "bind.h"
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| 15 | #include "peer.h"
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| 16 |
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| 17 | |
| 18 | * ovpn_bind_from_sockaddr - retrieve binding matching sockaddr
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| 19 | * @ss: the sockaddr to match
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| 20 | *
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| 21 | * Return: the bind matching the passed sockaddr if found, NULL otherwise
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| 22 |
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| 23 | struct ovpn_bind *ovpn_bind_from_sockaddr(const struct sockaddr_storage *ss)
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| 24 | {
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| 25 | struct ovpn_bind *bind;
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| 26 | size_t sa_len;
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| 27 |
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| 28 | if (ss->ss_family == AF_INET)
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| 29 | sa_len = sizeof(struct sockaddr_in);
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| 30 | else if (ss->ss_family == AF_INET6)
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| 31 | sa_len = sizeof(struct sockaddr_in6);
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| 32 | else
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| 33 | return ERR_PTR(-EAFNOSUPPORT);
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| 34 |
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| 35 | bind = kzalloc_obj(*bind, GFP_ATOMIC);
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| 36 | if (unlikely(!bind))
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| 37 | return ERR_PTR(-ENOMEM);
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| 38 |
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| 39 | memcpy(&bind->remote, ss, sa_len);
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| 40 |
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| 41 | return bind;
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| 42 | }
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| 43 |
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| 44 | |
| 45 | * ovpn_bind_reset - assign new binding to peer
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| 46 | * @peer: the peer whose binding has to be replaced
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| 47 | * @new: the new bind to assign
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| 48 |
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| 49 | void ovpn_bind_reset(struct ovpn_peer *peer, struct ovpn_bind *new)
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| 50 | {
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| 51 | lockdep_assert_held(&peer->lock);
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| 52 |
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| 53 | kfree_rcu(rcu_replace_pointer(peer->bind, new,
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| 54 | lockdep_is_held(&peer->lock)), rcu);
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| 55 | }
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