cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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peerlookup.h (1794B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
      4 */
      5
      6#ifndef _WG_PEERLOOKUP_H
      7#define _WG_PEERLOOKUP_H
      8
      9#include "messages.h"
     10
     11#include <linux/hashtable.h>
     12#include <linux/mutex.h>
     13#include <linux/siphash.h>
     14
     15struct wg_peer;
     16
     17struct pubkey_hashtable {
     18	/* TODO: move to rhashtable */
     19	DECLARE_HASHTABLE(hashtable, 11);
     20	siphash_key_t key;
     21	struct mutex lock;
     22};
     23
     24struct pubkey_hashtable *wg_pubkey_hashtable_alloc(void);
     25void wg_pubkey_hashtable_add(struct pubkey_hashtable *table,
     26			     struct wg_peer *peer);
     27void wg_pubkey_hashtable_remove(struct pubkey_hashtable *table,
     28				struct wg_peer *peer);
     29struct wg_peer *
     30wg_pubkey_hashtable_lookup(struct pubkey_hashtable *table,
     31			   const u8 pubkey[NOISE_PUBLIC_KEY_LEN]);
     32
     33struct index_hashtable {
     34	/* TODO: move to rhashtable */
     35	DECLARE_HASHTABLE(hashtable, 13);
     36	spinlock_t lock;
     37};
     38
     39enum index_hashtable_type {
     40	INDEX_HASHTABLE_HANDSHAKE = 1U << 0,
     41	INDEX_HASHTABLE_KEYPAIR = 1U << 1
     42};
     43
     44struct index_hashtable_entry {
     45	struct wg_peer *peer;
     46	struct hlist_node index_hash;
     47	enum index_hashtable_type type;
     48	__le32 index;
     49};
     50
     51struct index_hashtable *wg_index_hashtable_alloc(void);
     52__le32 wg_index_hashtable_insert(struct index_hashtable *table,
     53				 struct index_hashtable_entry *entry);
     54bool wg_index_hashtable_replace(struct index_hashtable *table,
     55				struct index_hashtable_entry *old,
     56				struct index_hashtable_entry *new);
     57void wg_index_hashtable_remove(struct index_hashtable *table,
     58			       struct index_hashtable_entry *entry);
     59struct index_hashtable_entry *
     60wg_index_hashtable_lookup(struct index_hashtable *table,
     61			  const enum index_hashtable_type type_mask,
     62			  const __le32 index, struct wg_peer **peer);
     63
     64#endif /* _WG_PEERLOOKUP_H */