25 	struct wg_peer *peer;  in wg_peer_create()  local
33 	peer = kmem_cache_zalloc(peer_cache, GFP_KERNEL);  in wg_peer_create()
34 	if (unlikely(!peer))  in wg_peer_create()
36 	if (unlikely(dst_cache_init(&peer->endpoint_cache, GFP_KERNEL)))  in wg_peer_create()
39 	peer->device = wg;  in wg_peer_create()
40 	wg_noise_handshake_init(&peer->handshake, &wg->static_identity,  in wg_peer_create()
41 				public_key, preshared_key, peer);  in wg_peer_create()
42 	peer->internal_id = atomic64_inc_return(&peer_counter);  in wg_peer_create()
43 	peer->serial_work_cpu = nr_cpumask_bits;  in wg_peer_create()
44 	wg_cookie_init(&peer->latest_cookie);  in wg_peer_create()
45 	wg_timers_init(peer);  in wg_peer_create()
46 	wg_cookie_checker_precompute_peer_keys(peer);  in wg_peer_create()
47 	spin_lock_init(&peer->keypairs.keypair_update_lock);  in wg_peer_create()
48 	INIT_WORK(&peer->transmit_handshake_work, wg_packet_handshake_send_worker);  in wg_peer_create()
49 	INIT_WORK(&peer->transmit_packet_work, wg_packet_tx_worker);  in wg_peer_create()
50 	wg_prev_queue_init(&peer->tx_queue);  in wg_peer_create()
51 	wg_prev_queue_init(&peer->rx_queue);  in wg_peer_create()
52 	rwlock_init(&peer->endpoint_lock);  in wg_peer_create()
53 	kref_init(&peer->refcount);  in wg_peer_create()
54 	skb_queue_head_init(&peer->staged_packet_queue);  in wg_peer_create()
55 	wg_noise_reset_last_sent_handshake(&peer->last_sent_handshake);  in wg_peer_create()
56 	set_bit(NAPI_STATE_NO_BUSY_POLL, &peer->napi.state);  in wg_peer_create()
57 	netif_napi_add(wg->dev, &peer->napi, wg_packet_rx_poll);  in wg_peer_create()
58 	napi_enable(&peer->napi);  in wg_peer_create()
59 	list_add_tail(&peer->peer_list, &wg->peer_list);  in wg_peer_create()
60 	INIT_LIST_HEAD(&peer->allowedips_list);  in wg_peer_create()
61 	wg_pubkey_hashtable_add(wg->peer_hashtable, peer);  in wg_peer_create()
63 	pr_debug("%s: Peer %llu created\n", wg->dev->name, peer->internal_id);  in wg_peer_create()
64 	return peer;  in wg_peer_create()
67 	kmem_cache_free(peer_cache, peer);  in wg_peer_create()
71 struct wg_peer *wg_peer_get_maybe_zero(struct wg_peer *peer)  in wg_peer_get_maybe_zero()  argument
75 	if (unlikely(!peer || !kref_get_unless_zero(&peer->refcount)))  in wg_peer_get_maybe_zero()
77 	return peer;  in wg_peer_get_maybe_zero()
80 static void peer_make_dead(struct wg_peer *peer)  in peer_make_dead()  argument
83 	list_del_init(&peer->peer_list);  in peer_make_dead()
84 	wg_allowedips_remove_by_peer(&peer->device->peer_allowedips, peer,  in peer_make_dead()
85 				     &peer->device->device_update_lock);  in peer_make_dead()
86 	wg_pubkey_hashtable_remove(peer->device->peer_hashtable, peer);  in peer_make_dead()
89 	WRITE_ONCE(peer->is_dead, true);  in peer_make_dead()
94 static void peer_remove_after_dead(struct wg_peer *peer)  in peer_remove_after_dead()  argument
96 	WARN_ON(!peer->is_dead);  in peer_remove_after_dead()
101 	wg_noise_keypairs_clear(&peer->keypairs);  in peer_remove_after_dead()
106 	wg_timers_stop(peer);  in peer_remove_after_dead()
116 	flush_workqueue(peer->device->packet_crypt_wq);  in peer_remove_after_dead()
118 	flush_workqueue(peer->device->packet_crypt_wq);  in peer_remove_after_dead()
120 	napi_disable(&peer->napi);  in peer_remove_after_dead()
124 	netif_napi_del(&peer->napi);  in peer_remove_after_dead()
129 	flush_workqueue(peer->device->handshake_send_wq);  in peer_remove_after_dead()
148 	--peer->device->num_peers;  in peer_remove_after_dead()
149 	wg_peer_put(peer);  in peer_remove_after_dead()
156 void wg_peer_remove(struct wg_peer *peer)  in wg_peer_remove()  argument
158 	if (unlikely(!peer))  in wg_peer_remove()
160 	lockdep_assert_held(&peer->device->device_update_lock);  in wg_peer_remove()
162 	peer_make_dead(peer);  in wg_peer_remove()
164 	peer_remove_after_dead(peer);  in wg_peer_remove()
169 	struct wg_peer *peer, *temp;  in wg_peer_remove_all()  local
177 	list_for_each_entry_safe(peer, temp, &wg->peer_list, peer_list) {  in wg_peer_remove_all()
178 		peer_make_dead(peer);  in wg_peer_remove_all()
179 		list_add_tail(&peer->peer_list, &dead_peers);  in wg_peer_remove_all()
182 	list_for_each_entry_safe(peer, temp, &dead_peers, peer_list)  in wg_peer_remove_all()
183 		peer_remove_after_dead(peer);  in wg_peer_remove_all()
188 	struct wg_peer *peer = container_of(rcu, struct wg_peer, rcu);  in rcu_release()  local
190 	dst_cache_destroy(&peer->endpoint_cache);  in rcu_release()
191 	WARN_ON(wg_prev_queue_peek(&peer->tx_queue) || wg_prev_queue_peek(&peer->rx_queue));  in rcu_release()
196 	memzero_explicit(peer, sizeof(*peer));  in rcu_release()
197 	kmem_cache_free(peer_cache, peer);  in rcu_release()
202 	struct wg_peer *peer = container_of(refcount, struct wg_peer, refcount);  in kref_release()  local
205 		 peer->device->dev->name, peer->internal_id,  in kref_release()
206 		 &peer->endpoint.addr);  in kref_release()
211 	wg_index_hashtable_remove(peer->device->index_hashtable,  in kref_release()
212 				  &peer->handshake.entry);  in kref_release()
217 	wg_packet_purge_staged_packets(peer);  in kref_release()
220 	call_rcu(&peer->rcu, rcu_release);  in kref_release()
223 void wg_peer_put(struct wg_peer *peer)  in wg_peer_put()  argument
225 	if (unlikely(!peer))  in wg_peer_put()
227 	kref_put(&peer->refcount, kref_release);  in wg_peer_put()