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-rw-r--r--net/rxrpc/net_ns.c135
1 files changed, 135 insertions, 0 deletions
diff --git a/net/rxrpc/net_ns.c b/net/rxrpc/net_ns.c
new file mode 100644
index 000000000..bb4c25d6d
--- /dev/null
+++ b/net/rxrpc/net_ns.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* rxrpc network namespace handling.
+ *
+ * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ */
+
+#include <linux/proc_fs.h>
+#include "ar-internal.h"
+
+unsigned int rxrpc_net_id;
+
+static void rxrpc_client_conn_reap_timeout(struct timer_list *timer)
+{
+ struct rxrpc_net *rxnet =
+ container_of(timer, struct rxrpc_net, client_conn_reap_timer);
+
+ if (rxnet->live)
+ rxrpc_queue_work(&rxnet->client_conn_reaper);
+}
+
+static void rxrpc_service_conn_reap_timeout(struct timer_list *timer)
+{
+ struct rxrpc_net *rxnet =
+ container_of(timer, struct rxrpc_net, service_conn_reap_timer);
+
+ if (rxnet->live)
+ rxrpc_queue_work(&rxnet->service_conn_reaper);
+}
+
+static void rxrpc_peer_keepalive_timeout(struct timer_list *timer)
+{
+ struct rxrpc_net *rxnet =
+ container_of(timer, struct rxrpc_net, peer_keepalive_timer);
+
+ if (rxnet->live)
+ rxrpc_queue_work(&rxnet->peer_keepalive_work);
+}
+
+/*
+ * Initialise a per-network namespace record.
+ */
+static __net_init int rxrpc_init_net(struct net *net)
+{
+ struct rxrpc_net *rxnet = rxrpc_net(net);
+ int ret, i;
+
+ rxnet->live = true;
+ get_random_bytes(&rxnet->epoch, sizeof(rxnet->epoch));
+ rxnet->epoch |= RXRPC_RANDOM_EPOCH;
+
+ INIT_LIST_HEAD(&rxnet->calls);
+ spin_lock_init(&rxnet->call_lock);
+ atomic_set(&rxnet->nr_calls, 1);
+
+ atomic_set(&rxnet->nr_conns, 1);
+ INIT_LIST_HEAD(&rxnet->conn_proc_list);
+ INIT_LIST_HEAD(&rxnet->service_conns);
+ rwlock_init(&rxnet->conn_lock);
+ INIT_WORK(&rxnet->service_conn_reaper,
+ rxrpc_service_connection_reaper);
+ timer_setup(&rxnet->service_conn_reap_timer,
+ rxrpc_service_conn_reap_timeout, 0);
+
+ atomic_set(&rxnet->nr_client_conns, 0);
+ rxnet->kill_all_client_conns = false;
+ spin_lock_init(&rxnet->client_conn_cache_lock);
+ spin_lock_init(&rxnet->client_conn_discard_lock);
+ INIT_LIST_HEAD(&rxnet->idle_client_conns);
+ INIT_WORK(&rxnet->client_conn_reaper,
+ rxrpc_discard_expired_client_conns);
+ timer_setup(&rxnet->client_conn_reap_timer,
+ rxrpc_client_conn_reap_timeout, 0);
+
+ INIT_HLIST_HEAD(&rxnet->local_endpoints);
+ mutex_init(&rxnet->local_mutex);
+
+ hash_init(rxnet->peer_hash);
+ spin_lock_init(&rxnet->peer_hash_lock);
+ for (i = 0; i < ARRAY_SIZE(rxnet->peer_keepalive); i++)
+ INIT_LIST_HEAD(&rxnet->peer_keepalive[i]);
+ INIT_LIST_HEAD(&rxnet->peer_keepalive_new);
+ timer_setup(&rxnet->peer_keepalive_timer,
+ rxrpc_peer_keepalive_timeout, 0);
+ INIT_WORK(&rxnet->peer_keepalive_work, rxrpc_peer_keepalive_worker);
+ rxnet->peer_keepalive_base = ktime_get_seconds();
+
+ ret = -ENOMEM;
+ rxnet->proc_net = proc_net_mkdir(net, "rxrpc", net->proc_net);
+ if (!rxnet->proc_net)
+ goto err_proc;
+
+ proc_create_net("calls", 0444, rxnet->proc_net, &rxrpc_call_seq_ops,
+ sizeof(struct seq_net_private));
+ proc_create_net("conns", 0444, rxnet->proc_net,
+ &rxrpc_connection_seq_ops,
+ sizeof(struct seq_net_private));
+ proc_create_net("peers", 0444, rxnet->proc_net,
+ &rxrpc_peer_seq_ops,
+ sizeof(struct seq_net_private));
+ proc_create_net("locals", 0444, rxnet->proc_net,
+ &rxrpc_local_seq_ops,
+ sizeof(struct seq_net_private));
+ return 0;
+
+err_proc:
+ rxnet->live = false;
+ return ret;
+}
+
+/*
+ * Clean up a per-network namespace record.
+ */
+static __net_exit void rxrpc_exit_net(struct net *net)
+{
+ struct rxrpc_net *rxnet = rxrpc_net(net);
+
+ rxnet->live = false;
+ del_timer_sync(&rxnet->peer_keepalive_timer);
+ cancel_work_sync(&rxnet->peer_keepalive_work);
+ /* Remove the timer again as the worker may have restarted it. */
+ del_timer_sync(&rxnet->peer_keepalive_timer);
+ rxrpc_destroy_all_calls(rxnet);
+ rxrpc_destroy_all_connections(rxnet);
+ rxrpc_destroy_all_peers(rxnet);
+ rxrpc_destroy_all_locals(rxnet);
+ proc_remove(rxnet->proc_net);
+}
+
+struct pernet_operations rxrpc_net_ops = {
+ .init = rxrpc_init_net,
+ .exit = rxrpc_exit_net,
+ .id = &rxrpc_net_id,
+ .size = sizeof(struct rxrpc_net),
+};