Lines Matching refs:local
26 * Compare a local to an address. Return -ve, 0 or +ve to indicate less than,
34 static long rxrpc_local_cmp_key(const struct rxrpc_local *local,
39 diff = ((local->srx.transport_type - srx->transport_type) ?:
40 (local->srx.transport_len - srx->transport_len) ?:
41 (local->srx.transport.family - srx->transport.family));
50 return ((u16 __force)local->srx.transport.sin.sin_port -
52 memcmp(&local->srx.transport.sin.sin_addr,
60 return ((u16 __force)local->srx.transport.sin6.sin6_port -
62 memcmp(&local->srx.transport.sin6.sin6_addr,
72 * Allocate a new local endpoint.
77 struct rxrpc_local *local;
79 local = kzalloc(sizeof(struct rxrpc_local), GFP_KERNEL);
80 if (local) {
81 refcount_set(&local->ref, 1);
82 atomic_set(&local->active_users, 1);
83 local->rxnet = rxnet;
84 INIT_HLIST_NODE(&local->link);
85 INIT_WORK(&local->processor, rxrpc_local_processor);
86 init_rwsem(&local->defrag_sem);
87 skb_queue_head_init(&local->reject_queue);
88 skb_queue_head_init(&local->event_queue);
89 local->client_bundles = RB_ROOT;
90 spin_lock_init(&local->client_bundles_lock);
91 spin_lock_init(&local->lock);
92 rwlock_init(&local->services_lock);
93 local->debug_id = atomic_inc_return(&rxrpc_debug_id);
94 memcpy(&local->srx, srx, sizeof(*srx));
95 local->srx.srx_service = 0;
96 trace_rxrpc_local(local->debug_id, rxrpc_local_new, 1, NULL);
99 _leave(" = %p", local);
100 return local;
104 * create the local socket
107 static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net)
113 local, local->srx.transport_type, local->srx.transport.family);
115 /* create a socket to represent the local endpoint */
116 ret = sock_create_kern(net, local->srx.transport.family,
117 local->srx.transport_type, 0, &local->socket);
124 usk = local->socket->sk;
130 rcu_assign_sk_user_data(usk, local);
140 if (local->srx.transport.family == AF_INET6)
145 /* if a local address was supplied then bind it */
146 if (local->srx.transport_len > sizeof(sa_family_t)) {
148 ret = kernel_bind(local->socket,
149 (struct sockaddr *)&local->srx.transport,
150 local->srx.transport_len);
157 switch (local->srx.transport.family) {
160 ip6_sock_set_recverr(local->socket->sk);
168 ip_sock_set_recverr(local->socket->sk);
171 ip_sock_set_mtu_discover(local->socket->sk, IP_PMTUDISC_DO);
174 sock_enable_timestamps(local->socket->sk);
185 kernel_sock_shutdown(local->socket, SHUT_RDWR);
186 local->socket->sk->sk_user_data = NULL;
187 sock_release(local->socket);
188 local->socket = NULL;
195 * Look up or create a new local endpoint using the specified local address.
200 struct rxrpc_local *local;
213 local = hlist_entry(cursor, struct rxrpc_local, link);
215 diff = rxrpc_local_cmp_key(local, srx);
221 * but it may also still have the local transport address that
225 local = NULL;
231 * we're attempting to use a local address that the dying
234 if (!rxrpc_use_local(local))
241 local = rxrpc_alloc_local(rxnet, srx);
242 if (!local)
245 ret = rxrpc_open_socket(local, net);
250 hlist_replace_rcu(cursor, &local->link);
253 hlist_add_head_rcu(&local->link, &rxnet->local_endpoints);
261 age, local->debug_id, &local->srx.transport);
263 _leave(" = %p", local);
264 return local;
270 if (local)
271 call_rcu(&local->rcu, rxrpc_local_rcu);
282 * Get a ref on a local endpoint.
284 struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *local)
289 __refcount_inc(&local->ref, &r);
290 trace_rxrpc_local(local->debug_id, rxrpc_local_got, r + 1, here);
291 return local;
295 * Get a ref on a local endpoint unless its usage has already reached 0.
297 struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local)
302 if (local) {
303 if (__refcount_inc_not_zero(&local->ref, &r))
304 trace_rxrpc_local(local->debug_id, rxrpc_local_got,
307 local = NULL;
309 return local;
313 * Queue a local endpoint and pass the caller's reference to the work item.
315 void rxrpc_queue_local(struct rxrpc_local *local)
318 unsigned int debug_id = local->debug_id;
319 int r = refcount_read(&local->ref);
321 if (rxrpc_queue_work(&local->processor))
324 rxrpc_put_local(local);
328 * Drop a ref on a local endpoint.
330 void rxrpc_put_local(struct rxrpc_local *local)
337 if (local) {
338 debug_id = local->debug_id;
340 dead = __refcount_dec_and_test(&local->ref, &r);
344 call_rcu(&local->rcu, rxrpc_local_rcu);
349 * Start using a local endpoint.
351 struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *local)
353 local = rxrpc_get_local_maybe(local);
354 if (!local)
357 if (!__rxrpc_use_local(local)) {
358 rxrpc_put_local(local);
362 return local;
366 * Cease using a local endpoint. Once the number of active users reaches 0, we
369 void rxrpc_unuse_local(struct rxrpc_local *local)
371 if (local) {
372 if (__rxrpc_unuse_local(local)) {
373 rxrpc_get_local(local);
374 rxrpc_queue_local(local);
380 * Destroy a local endpoint's socket and then hand the record to RCU to dispose
386 static void rxrpc_local_destroyer(struct rxrpc_local *local)
388 struct socket *socket = local->socket;
389 struct rxrpc_net *rxnet = local->rxnet;
391 _enter("%d", local->debug_id);
393 local->dead = true;
396 hlist_del_init_rcu(&local->link);
399 rxrpc_clean_up_local_conns(local);
401 ASSERT(!local->service);
404 local->socket = NULL;
411 * local endpoint.
413 rxrpc_purge_queue(&local->reject_queue);
414 rxrpc_purge_queue(&local->event_queue);
423 struct rxrpc_local *local =
427 if (local->dead)
430 trace_rxrpc_local(local->debug_id, rxrpc_local_processing,
431 refcount_read(&local->ref), NULL);
435 if (!__rxrpc_use_local(local)) {
436 rxrpc_local_destroyer(local);
440 if (!skb_queue_empty(&local->reject_queue)) {
441 rxrpc_reject_packets(local);
445 if (!skb_queue_empty(&local->event_queue)) {
446 rxrpc_process_local_events(local);
450 __rxrpc_unuse_local(local);
453 rxrpc_put_local(local);
457 * Destroy a local endpoint after the RCU grace period expires.
461 struct rxrpc_local *local = container_of(rcu, struct rxrpc_local, rcu);
463 _enter("%d", local->debug_id);
465 ASSERT(!work_pending(&local->processor));
467 _net("DESTROY LOCAL %d", local->debug_id);
468 kfree(local);
473 * Verify the local endpoint list is empty by this point.
477 struct rxrpc_local *local;
485 hlist_for_each_entry(local, &rxnet->local_endpoints, link) {
486 pr_err("AF_RXRPC: Leaked local %p {%d}\n",
487 local, refcount_read(&local->ref));