drivers/net/wireguard/device.h

   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_DEVICE_H
   7 #define _WG_DEVICE_H
   8
   9 #include "noise.h"
  10 #include "allowedips.h"
  11 #include "peerlookup.h"
  12 #include "cookie.h"
  13
  14 #include <linux/types.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/workqueue.h>
  17 #include <linux/mutex.h>
  18 #include <linux/net.h>
  19 #include <linux/ptr_ring.h>
  20
  21 struct wg_device;
  22
  23 struct multicore_worker {
  24         void *ptr;
  25         struct work_struct work;
  26 };
  27
  28 struct crypt_queue {
  29         struct ptr_ring ring;
  30         struct multicore_worker __percpu *worker;
  31         int last_cpu;
  32 };
  33
  34 struct prev_queue {
  35         struct sk_buff *head, *tail, *peeked;
  36         struct { struct sk_buff *next, *prev; } empty; // Match first 2 members of struct sk_buff.
  37         atomic_t count;
  38 };
  39
  40 struct wg_device {
  41         struct net_device *dev;
  42         struct crypt_queue encrypt_queue, decrypt_queue, handshake_queue;
  43         struct sock __rcu *sock4, *sock6;
  44         struct net __rcu *creating_net;
  45         struct noise_static_identity static_identity;
  46         struct workqueue_struct *packet_crypt_wq,*handshake_receive_wq, *handshake_send_wq;
  47         struct cookie_checker cookie_checker;
  48         struct pubkey_hashtable *peer_hashtable;
  49         struct index_hashtable *index_hashtable;
  50         struct allowedips peer_allowedips;
  51         struct mutex device_update_lock, socket_update_lock;
  52         struct list_head device_list, peer_list;
  53         atomic_t handshake_queue_len;
  54         unsigned int num_peers, device_update_gen;
  55         u32 fwmark;
  56         u16 incoming_port;
  57 };
  58
  59 int wg_device_init(void);
  60 void wg_device_uninit(void);
  61
  62 #endif /* _WG_DEVICE_H */