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59 lines
1.8 KiB
59 lines
1.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2015-2019 Jason A. Donenfeld <[email protected]>. All Rights Reserved. |
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*/ |
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#ifndef _WG_ALLOWEDIPS_H |
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#define _WG_ALLOWEDIPS_H |
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#include <linux/mutex.h> |
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#include <linux/ip.h> |
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#include <linux/ipv6.h> |
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struct wg_peer; |
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struct allowedips_node { |
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struct wg_peer __rcu *peer; |
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struct allowedips_node __rcu *bit[2]; |
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/* While it may seem scandalous that we waste space for v4, |
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* we're alloc'ing to the nearest power of 2 anyway, so this |
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* doesn't actually make a difference. |
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*/ |
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u8 bits[16] __aligned(__alignof(u64)); |
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u8 cidr, bit_at_a, bit_at_b, bitlen; |
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/* Keep rarely used list at bottom to be beyond cache line. */ |
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union { |
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struct list_head peer_list; |
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struct rcu_head rcu; |
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}; |
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}; |
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struct allowedips { |
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struct allowedips_node __rcu *root4; |
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struct allowedips_node __rcu *root6; |
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u64 seq; |
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}; |
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void wg_allowedips_init(struct allowedips *table); |
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void wg_allowedips_free(struct allowedips *table, struct mutex *mutex); |
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int wg_allowedips_insert_v4(struct allowedips *table, const struct in_addr *ip, |
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u8 cidr, struct wg_peer *peer, struct mutex *lock); |
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int wg_allowedips_insert_v6(struct allowedips *table, const struct in6_addr *ip, |
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u8 cidr, struct wg_peer *peer, struct mutex *lock); |
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void wg_allowedips_remove_by_peer(struct allowedips *table, |
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struct wg_peer *peer, struct mutex *lock); |
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/* The ip input pointer should be __aligned(__alignof(u64))) */ |
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int wg_allowedips_read_node(struct allowedips_node *node, u8 ip[16], u8 *cidr); |
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/* These return a strong reference to a peer: */ |
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struct wg_peer *wg_allowedips_lookup_dst(struct allowedips *table, |
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struct sk_buff *skb); |
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struct wg_peer *wg_allowedips_lookup_src(struct allowedips *table, |
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struct sk_buff *skb); |
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#ifdef DEBUG |
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bool wg_allowedips_selftest(void); |
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#endif |
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#endif /* _WG_ALLOWEDIPS_H */
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