net: Add Wireguard support
This patch was created via the create-patch.sh script from the
wiregaurd-compat repo at
https://git.zx2c4.com/wireguard-linux-compat,
commit 3d3c92b4711b42169137b2ddf42ed4382e2babdf
Change-Id: I74f7eb09028152f71f78ae7ce20254d94ad0e256
diff --git a/net/wireguard/device.h b/net/wireguard/device.h
new file mode 100644
index 0000000..43c7ceb
--- /dev/null
+++ b/net/wireguard/device.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#ifndef _WG_DEVICE_H
+#define _WG_DEVICE_H
+
+#include "noise.h"
+#include "allowedips.h"
+#include "peerlookup.h"
+#include "cookie.h"
+
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/workqueue.h>
+#include <linux/mutex.h>
+#include <linux/net.h>
+#include <linux/ptr_ring.h>
+
+struct wg_device;
+
+struct multicore_worker {
+ void *ptr;
+ struct work_struct work;
+};
+
+struct crypt_queue {
+ struct ptr_ring ring;
+ struct multicore_worker __percpu *worker;
+ int last_cpu;
+};
+
+struct prev_queue {
+ struct sk_buff *head, *tail, *peeked;
+ struct { struct sk_buff *next, *prev; } empty; // Match first 2 members of struct sk_buff.
+ atomic_t count;
+};
+
+struct wg_device {
+ struct net_device *dev;
+ struct crypt_queue encrypt_queue, decrypt_queue, handshake_queue;
+ struct sock __rcu *sock4, *sock6;
+ struct net __rcu *creating_net;
+ struct noise_static_identity static_identity;
+ struct workqueue_struct *packet_crypt_wq,*handshake_receive_wq, *handshake_send_wq;
+ struct cookie_checker cookie_checker;
+ struct pubkey_hashtable *peer_hashtable;
+ struct index_hashtable *index_hashtable;
+ struct allowedips peer_allowedips;
+ struct mutex device_update_lock, socket_update_lock;
+ struct list_head device_list, peer_list;
+ atomic_t handshake_queue_len;
+ unsigned int num_peers, device_update_gen;
+ u32 fwmark;
+ u16 incoming_port;
+};
+
+int wg_device_init(void);
+void wg_device_uninit(void);
+
+#endif /* _WG_DEVICE_H */