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/peer.h b/net/wireguard/peer.h
new file mode 100644
index 0000000..76e4d31
--- /dev/null
+++ b/net/wireguard/peer.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#ifndef _WG_PEER_H
+#define _WG_PEER_H
+
+#include "device.h"
+#include "noise.h"
+#include "cookie.h"
+
+#include <linux/types.h>
+#include <linux/netfilter.h>
+#include <linux/spinlock.h>
+#include <linux/kref.h>
+#include <net/dst_cache.h>
+
+struct wg_device;
+
+struct endpoint {
+ union {
+ struct sockaddr addr;
+ struct sockaddr_in addr4;
+ struct sockaddr_in6 addr6;
+ };
+ union {
+ struct {
+ struct in_addr src4;
+ /* Essentially the same as addr6->scope_id */
+ int src_if4;
+ };
+ struct in6_addr src6;
+ };
+};
+
+struct wg_peer {
+ struct wg_device *device;
+ struct prev_queue tx_queue, rx_queue;
+ struct sk_buff_head staged_packet_queue;
+ int serial_work_cpu;
+ bool is_dead;
+ struct noise_keypairs keypairs;
+ struct endpoint endpoint;
+ struct dst_cache endpoint_cache;
+ rwlock_t endpoint_lock;
+ struct noise_handshake handshake;
+ atomic64_t last_sent_handshake;
+ struct work_struct transmit_handshake_work, clear_peer_work, transmit_packet_work;
+ struct cookie latest_cookie;
+ struct hlist_node pubkey_hash;
+ u64 rx_bytes, tx_bytes;
+ struct timer_list timer_retransmit_handshake, timer_send_keepalive;
+ struct timer_list timer_new_handshake, timer_zero_key_material;
+ struct timer_list timer_persistent_keepalive;
+ unsigned int timer_handshake_attempts;
+ u16 persistent_keepalive_interval;
+ bool timer_need_another_keepalive;
+ bool sent_lastminute_handshake;
+ struct timespec64 walltime_last_handshake;
+ struct kref refcount;
+ struct rcu_head rcu;
+ struct list_head peer_list;
+ struct list_head allowedips_list;
+ struct napi_struct napi;
+ u64 internal_id;
+};
+
+struct wg_peer *wg_peer_create(struct wg_device *wg,
+ const u8 public_key[NOISE_PUBLIC_KEY_LEN],
+ const u8 preshared_key[NOISE_SYMMETRIC_KEY_LEN]);
+
+struct wg_peer *__must_check wg_peer_get_maybe_zero(struct wg_peer *peer);
+static inline struct wg_peer *wg_peer_get(struct wg_peer *peer)
+{
+ kref_get(&peer->refcount);
+ return peer;
+}
+void wg_peer_put(struct wg_peer *peer);
+void wg_peer_remove(struct wg_peer *peer);
+void wg_peer_remove_all(struct wg_device *wg);
+
+int wg_peer_init(void);
+void wg_peer_uninit(void);
+
+#endif /* _WG_PEER_H */