add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/net/rxrpc/conn_service.c
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@@ -1,16 +1,18 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* Service connection management
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  *
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  * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
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  * Written by David Howells (dhowells@redhat.com)
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public Licence
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- * as published by the Free Software Foundation; either version
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- * 2 of the Licence, or (at your option) any later version.
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  */
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 #include <linux/slab.h>
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 #include "ar-internal.h"
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+
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+static struct rxrpc_bundle rxrpc_service_dummy_bundle = {
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+	.ref		= REFCOUNT_INIT(1),
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+	.debug_id	= UINT_MAX,
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+	.channel_lock	= __SPIN_LOCK_UNLOCKED(&rxrpc_service_dummy_bundle.channel_lock),
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+};
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 /*
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  * Find a service connection under RCU conditions.
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@@ -97,7 +99,7 @@
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 	return;
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 found_extant_conn:
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-	if (atomic_read(&cursor->usage) == 0)
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+	if (refcount_read(&cursor->ref) == 0)
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 		goto replace_old_connection;
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 	write_sequnlock_bh(&peer->service_conn_lock);
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 	/* We should not be able to get here.  rxrpc_incoming_connection() is
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@@ -130,7 +132,8 @@
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 		 * the rxrpc_connections list.
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 		 */
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 		conn->state = RXRPC_CONN_SERVICE_PREALLOC;
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-		atomic_set(&conn->usage, 2);
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+		refcount_set(&conn->ref, 2);
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+		conn->bundle = rxrpc_get_bundle(&rxrpc_service_dummy_bundle);
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 		atomic_inc(&rxnet->nr_conns);
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 		write_lock(&rxnet->conn_lock);
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@@ -139,7 +142,7 @@
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 		write_unlock(&rxnet->conn_lock);
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 		trace_rxrpc_conn(conn->debug_id, rxrpc_conn_new_service,
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-				 atomic_read(&conn->usage),
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+				 refcount_read(&conn->ref),
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 				 __builtin_return_address(0));
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 	}
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@@ -152,6 +155,8 @@
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  */
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 void rxrpc_new_incoming_connection(struct rxrpc_sock *rx,
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 				   struct rxrpc_connection *conn,
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+				   const struct rxrpc_security *sec,
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+				   struct key *key,
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 				   struct sk_buff *skb)
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 {
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 	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
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@@ -164,6 +169,8 @@
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 	conn->service_id	= sp->hdr.serviceId;
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 	conn->security_ix	= sp->hdr.securityIndex;
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 	conn->out_clientflag	= 0;
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+	conn->security		= sec;
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+	conn->server_key	= key_get(key);
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 	if (conn->security_ix)
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 		conn->state	= RXRPC_CONN_SERVICE_UNSECURED;
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 	else