1 /* SCTP kernel implementation
2 * (C) Copyright IBM Corp. 2001, 2004
3 * Copyright (c) 1999-2000 Cisco, Inc.
4 * Copyright (c) 1999-2001 Motorola, Inc.
5 * Copyright (c) 2001 Intel Corp.
6 * Copyright (c) 2001 Nokia, Inc.
7 * Copyright (c) 2001 La Monte H.P. Yarroll
9 * These are the definitions needed for the sctp_ulpevent type. The
10 * sctp_ulpevent type is used to carry information from the state machine
13 * This file is part of the SCTP kernel implementation
15 * This SCTP implementation is free software;
16 * you can redistribute it and/or modify it under the terms of
17 * the GNU General Public License as published by
18 * the Free Software Foundation; either version 2, or (at your option)
21 * This SCTP implementation is distributed in the hope that it
22 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
23 * ************************
24 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
25 * See the GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with GNU CC; see the file COPYING. If not, write to
29 * the Free Software Foundation, 59 Temple Place - Suite 330,
30 * Boston, MA 02111-1307, USA.
32 * Please send any bug reports or fixes you make to the
34 * lksctp developers <lksctp-developers@lists.sourceforge.net>
36 * Or submit a bug report through the following website:
37 * http://www.sf.net/projects/lksctp
39 * Written or modified by:
40 * Jon Grimm <jgrimm@us.ibm.com>
41 * La Monte H.P. Yarroll <piggy@acm.org>
42 * Karl Knutson <karl@athena.chicago.il.us>
43 * Sridhar Samudrala <sri@us.ibm.com>
45 * Any bugs reported given to us we will try to fix... any fixes shared will
46 * be incorporated into the next SCTP release.
49 #ifndef __sctp_ulpevent_h__
50 #define __sctp_ulpevent_h__
52 /* A structure to carry information to the ULP (e.g. Sockets API) */
53 /* Warning: This sits inside an skb.cb[] area. Be very careful of
54 * growing this structure as it is at the maximum limit now.
56 struct sctp_ulpevent
{
57 struct sctp_association
*asoc
;
66 unsigned int rmem_len
;
69 /* Retrieve the skb this event sits inside of. */
70 static inline struct sk_buff
*sctp_event2skb(const struct sctp_ulpevent
*ev
)
72 return container_of((void *)ev
, struct sk_buff
, cb
);
75 /* Retrieve & cast the event sitting inside the skb. */
76 static inline struct sctp_ulpevent
*sctp_skb2event(struct sk_buff
*skb
)
78 return (struct sctp_ulpevent
*)skb
->cb
;
81 void sctp_ulpevent_free(struct sctp_ulpevent
*);
82 int sctp_ulpevent_is_notification(const struct sctp_ulpevent
*);
83 void sctp_queue_purge_ulpevents(struct sk_buff_head
*list
);
85 struct sctp_ulpevent
*sctp_ulpevent_make_assoc_change(
86 const struct sctp_association
*asoc
,
92 struct sctp_chunk
*chunk
,
95 struct sctp_ulpevent
*sctp_ulpevent_make_peer_addr_change(
96 const struct sctp_association
*asoc
,
97 const struct sockaddr_storage
*aaddr
,
103 struct sctp_ulpevent
*sctp_ulpevent_make_remote_error(
104 const struct sctp_association
*asoc
,
105 struct sctp_chunk
*chunk
,
108 struct sctp_ulpevent
*sctp_ulpevent_make_send_failed(
109 const struct sctp_association
*asoc
,
110 struct sctp_chunk
*chunk
,
115 struct sctp_ulpevent
*sctp_ulpevent_make_shutdown_event(
116 const struct sctp_association
*asoc
,
120 struct sctp_ulpevent
*sctp_ulpevent_make_pdapi(
121 const struct sctp_association
*asoc
,
122 __u32 indication
, gfp_t gfp
);
124 struct sctp_ulpevent
*sctp_ulpevent_make_adaptation_indication(
125 const struct sctp_association
*asoc
, gfp_t gfp
);
127 struct sctp_ulpevent
*sctp_ulpevent_make_rcvmsg(struct sctp_association
*asoc
,
128 struct sctp_chunk
*chunk
,
131 struct sctp_ulpevent
*sctp_ulpevent_make_authkey(
132 const struct sctp_association
*asoc
, __u16 key_id
,
133 __u32 indication
, gfp_t gfp
);
135 void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent
*event
,
137 __u16
sctp_ulpevent_get_notification_type(const struct sctp_ulpevent
*event
);
139 /* Is this event type enabled? */
140 static inline int sctp_ulpevent_type_enabled(__u16 sn_type
,
141 struct sctp_event_subscribe
*mask
)
143 char *amask
= (char *) mask
;
144 return amask
[sn_type
- SCTP_SN_TYPE_BASE
];
147 /* Given an event subscription, is this event enabled? */
148 static inline int sctp_ulpevent_is_enabled(const struct sctp_ulpevent
*event
,
149 struct sctp_event_subscribe
*mask
)
154 if (sctp_ulpevent_is_notification(event
)) {
155 sn_type
= sctp_ulpevent_get_notification_type(event
);
156 enabled
= sctp_ulpevent_type_enabled(sn_type
, mask
);
161 #endif /* __sctp_ulpevent_h__ */
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