Annotation of embedaddon/strongswan/src/libcharon/sa/ikev2/tasks/child_rekey.h, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (C) 2016 Tobias Brunner
3: * Copyright (C) 2007 Martin Willi
4: * HSR Hochschule fuer Technik Rapperswil
5: *
6: * This program is free software; you can redistribute it and/or modify it
7: * under the terms of the GNU General Public License as published by the
8: * Free Software Foundation; either version 2 of the License, or (at your
9: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * for more details.
15: */
16:
17: /**
18: * @defgroup child_rekey child_rekey
19: * @{ @ingroup tasks_v2
20: */
21:
22: #ifndef CHILD_REKEY_H_
23: #define CHILD_REKEY_H_
24:
25: typedef struct child_rekey_t child_rekey_t;
26:
27: #include <library.h>
28: #include <sa/ike_sa.h>
29: #include <sa/child_sa.h>
30: #include <sa/task.h>
31:
32: /**
33: * Task of type TASK_CHILD_REKEY, rekey an established CHILD_SA.
34: */
35: struct child_rekey_t {
36:
37: /**
38: * Implements the task_t interface
39: */
40: task_t task;
41:
42: /**
43: * Check if the given SA is the redundant CHILD_SA created during a rekey
44: * collision.
45: *
46: * This is called if the other peer deletes the redundant SA before we were
47: * able to handle the CREATE_CHILD_SA response.
48: *
49: * @param child CHILD_SA to check
50: * @return TRUE if the SA is the redundant CHILD_SA
51: */
52: bool (*is_redundant)(child_rekey_t *this, child_sa_t *child);
53:
54: /**
55: * Register a rekeying/delete task which collides with this one
56: *
57: * If two peers initiate rekeying at the same time, the collision must
58: * be handled gracefully. The task manager is aware of what exchanges
59: * are going on and notifies the active task by passing the passive.
60: *
61: * @param other passive task (adopted)
62: */
63: void (*collide)(child_rekey_t* this, task_t *other);
64: };
65:
66: /**
67: * Create a new TASK_CHILD_REKEY task.
68: *
69: * @param ike_sa IKE_SA this task works for
70: * @param protocol protocol of CHILD_SA to rekey, PROTO_NONE as responder
71: * @param spi inbound SPI of CHILD_SA to rekey
72: * @return child_rekey task to handle by the task_manager
73: */
74: child_rekey_t *child_rekey_create(ike_sa_t *ike_sa, protocol_id_t protocol,
75: uint32_t spi);
76:
77: #endif /** CHILD_REKEY_H_ @}*/
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