169 lines
4.9 KiB
C
169 lines
4.9 KiB
C
/* SCTP kernel reference Implementation
|
|
* (C) Copyright IBM Corp. 2001, 2004
|
|
* Copyright (c) 1999-2000 Cisco, Inc.
|
|
* Copyright (c) 1999-2001 Motorola, Inc.
|
|
* Copyright (c) 2001 Intel Corp.
|
|
* Copyright (c) 2001 Nokia, Inc.
|
|
* Copyright (c) 2001 La Monte H.P. Yarroll
|
|
*
|
|
* These are the definitions needed for the sctp_ulpevent type. The
|
|
* sctp_ulpevent type is used to carry information from the state machine
|
|
* upwards to the ULP.
|
|
*
|
|
* This file is part of the SCTP kernel reference Implementation
|
|
*
|
|
* The SCTP reference implementation is free software;
|
|
* you can redistribute it and/or modify it under the terms of
|
|
* the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* The SCTP reference implementation is distributed in the hope that it
|
|
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
|
|
* ************************
|
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
* See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GNU CC; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*
|
|
* Please send any bug reports or fixes you make to the
|
|
* email address(es):
|
|
* lksctp developers <lksctp-developers@lists.sourceforge.net>
|
|
*
|
|
* Or submit a bug report through the following website:
|
|
* http://www.sf.net/projects/lksctp
|
|
*
|
|
* Written or modified by:
|
|
* Jon Grimm <jgrimm@us.ibm.com>
|
|
* La Monte H.P. Yarroll <piggy@acm.org>
|
|
* Karl Knutson <karl@athena.chicago.il.us>
|
|
* Sridhar Samudrala <sri@us.ibm.com>
|
|
*
|
|
* Any bugs reported given to us we will try to fix... any fixes shared will
|
|
* be incorporated into the next SCTP release.
|
|
*/
|
|
|
|
#ifndef __sctp_ulpevent_h__
|
|
#define __sctp_ulpevent_h__
|
|
|
|
/* A structure to carry information to the ULP (e.g. Sockets API) */
|
|
/* Warning: This sits inside an skb.cb[] area. Be very careful of
|
|
* growing this structure as it is at the maximum limit now.
|
|
*/
|
|
struct sctp_ulpevent {
|
|
struct sctp_association *asoc;
|
|
__u16 stream;
|
|
__u16 ssn;
|
|
__u16 flags;
|
|
__u32 ppid;
|
|
__u32 tsn;
|
|
__u32 cumtsn;
|
|
int msg_flags;
|
|
int iif;
|
|
unsigned int rmem_len;
|
|
};
|
|
|
|
/* Retrieve the skb this event sits inside of. */
|
|
static inline struct sk_buff *sctp_event2skb(struct sctp_ulpevent *ev)
|
|
{
|
|
return container_of((void *)ev, struct sk_buff, cb);
|
|
}
|
|
|
|
/* Retrieve & cast the event sitting inside the skb. */
|
|
static inline struct sctp_ulpevent *sctp_skb2event(struct sk_buff *skb)
|
|
{
|
|
return (struct sctp_ulpevent *)skb->cb;
|
|
}
|
|
|
|
void sctp_ulpevent_free(struct sctp_ulpevent *);
|
|
int sctp_ulpevent_is_notification(const struct sctp_ulpevent *);
|
|
void sctp_queue_purge_ulpevents(struct sk_buff_head *list);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_assoc_change(
|
|
const struct sctp_association *asoc,
|
|
__u16 flags,
|
|
__u16 state,
|
|
__u16 error,
|
|
__u16 outbound,
|
|
__u16 inbound,
|
|
struct sctp_chunk *chunk,
|
|
gfp_t gfp);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
|
|
const struct sctp_association *asoc,
|
|
const struct sockaddr_storage *aaddr,
|
|
int flags,
|
|
int state,
|
|
int error,
|
|
gfp_t gfp);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
|
|
const struct sctp_association *asoc,
|
|
struct sctp_chunk *chunk,
|
|
__u16 flags,
|
|
gfp_t gfp);
|
|
struct sctp_ulpevent *sctp_ulpevent_make_send_failed(
|
|
const struct sctp_association *asoc,
|
|
struct sctp_chunk *chunk,
|
|
__u16 flags,
|
|
__u32 error,
|
|
gfp_t gfp);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event(
|
|
const struct sctp_association *asoc,
|
|
__u16 flags,
|
|
gfp_t gfp);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
|
|
const struct sctp_association *asoc,
|
|
__u32 indication, gfp_t gfp);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_adaptation_indication(
|
|
const struct sctp_association *asoc, gfp_t gfp);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
|
|
struct sctp_chunk *chunk,
|
|
gfp_t gfp);
|
|
|
|
struct sctp_ulpevent *sctp_ulpevent_make_authkey(
|
|
const struct sctp_association *asoc, __u16 key_id,
|
|
__u32 indication, gfp_t gfp);
|
|
|
|
void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
|
|
struct msghdr *);
|
|
__u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event);
|
|
|
|
/* Is this event type enabled? */
|
|
static inline int sctp_ulpevent_type_enabled(__u16 sn_type,
|
|
struct sctp_event_subscribe *mask)
|
|
{
|
|
char *amask = (char *) mask;
|
|
return amask[sn_type - SCTP_SN_TYPE_BASE];
|
|
}
|
|
|
|
/* Given an event subscription, is this event enabled? */
|
|
static inline int sctp_ulpevent_is_enabled(const struct sctp_ulpevent *event,
|
|
struct sctp_event_subscribe *mask)
|
|
{
|
|
__u16 sn_type;
|
|
int enabled = 1;
|
|
|
|
if (sctp_ulpevent_is_notification(event)) {
|
|
sn_type = sctp_ulpevent_get_notification_type(event);
|
|
enabled = sctp_ulpevent_type_enabled(sn_type, mask);
|
|
}
|
|
return enabled;
|
|
}
|
|
|
|
#endif /* __sctp_ulpevent_h__ */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|