diff options
Diffstat (limited to 'include/net/sctp/ulpevent.h')
| -rw-r--r-- | include/net/sctp/ulpevent.h | 138 |
1 files changed, 78 insertions, 60 deletions
diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h index ca4693b4e09e..994e984eef32 100644 --- a/include/net/sctp/ulpevent.h +++ b/include/net/sctp/ulpevent.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* SCTP kernel implementation * (C) Copyright IBM Corp. 2001, 2004 * Copyright (c) 1999-2000 Cisco, Inc. @@ -12,38 +13,15 @@ * * This file is part of the SCTP kernel implementation * - * This SCTP 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. - * - * This SCTP 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 + * lksctp developers <linux-sctp@vger.kernel.org> * * 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__ @@ -52,19 +30,29 @@ /* 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. + * + * sctp_ulpevent is saved in sk->cb(48 bytes), whose last 4 bytes + * have been taken by sock_skb_cb, So here it has to use 'packed' + * to make sctp_ulpevent fit into the rest 44 bytes. */ struct sctp_ulpevent { struct sctp_association *asoc; - __u16 stream; - __u16 ssn; - __u16 flags; - __u32 ppid; + struct sctp_chunk *chunk; + unsigned int rmem_len; + union { + __u32 mid; + __u16 ssn; + }; + union { + __u32 ppid; + __u32 fsn; + }; __u32 tsn; __u32 cumtsn; - int msg_flags; - int iif; - unsigned int rmem_len; -}; + __u16 stream; + __u16 flags; + __u16 msg_flags; +} __packed; /* Retrieve the skb this event sits inside of. */ static inline struct sk_buff *sctp_event2skb(const struct sctp_ulpevent *ev) @@ -92,13 +80,8 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_change( 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); +void sctp_ulpevent_notify_peer_addr_change(struct sctp_transport *transport, + int state, int error); struct sctp_ulpevent *sctp_ulpevent_make_remote_error( const struct sctp_association *asoc, @@ -112,6 +95,13 @@ struct sctp_ulpevent *sctp_ulpevent_make_send_failed( __u32 error, gfp_t gfp); +struct sctp_ulpevent *sctp_ulpevent_make_send_failed_event( + 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, @@ -119,7 +109,8 @@ struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event( struct sctp_ulpevent *sctp_ulpevent_make_pdapi( const struct sctp_association *asoc, - __u32 indication, gfp_t gfp); + __u32 indication, __u32 sid, __u32 seq, + __u32 flags, gfp_t gfp); struct sctp_ulpevent *sctp_ulpevent_make_adaptation_indication( const struct sctp_association *asoc, gfp_t gfp); @@ -135,37 +126,64 @@ struct sctp_ulpevent *sctp_ulpevent_make_authkey( struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event( const struct sctp_association *asoc, gfp_t gfp); +struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event( + const struct sctp_association *asoc, __u16 flags, + __u16 stream_num, __be16 *stream_list, gfp_t gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event( + const struct sctp_association *asoc, __u16 flags, + __u32 local_tsn, __u32 remote_tsn, gfp_t gfp); + +struct sctp_ulpevent *sctp_ulpevent_make_stream_change_event( + const struct sctp_association *asoc, __u16 flags, + __u32 strchange_instrms, __u32 strchange_outstrms, gfp_t gfp); + +struct sctp_ulpevent *sctp_make_reassembled_event( + struct net *net, struct sk_buff_head *queue, + struct sk_buff *f_frag, struct sk_buff *l_frag); + void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event, - struct msghdr *); + struct msghdr *); +void sctp_ulpevent_read_rcvinfo(const struct sctp_ulpevent *event, + struct msghdr *); +void sctp_ulpevent_read_nxtinfo(const struct sctp_ulpevent *event, + struct msghdr *, struct sock *sk); + __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) +static inline void sctp_ulpevent_type_set(__u16 *subscribe, + __u16 sn_type, __u8 on) { - char *amask = (char *) mask; - return amask[sn_type - SCTP_SN_TYPE_BASE]; + if (sn_type > SCTP_SN_TYPE_MAX) + return; + + if (on) + *subscribe |= (1 << (sn_type - SCTP_SN_TYPE_BASE)); + else + *subscribe &= ~(1 << (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) +/* Is this event type enabled? */ +static inline bool sctp_ulpevent_type_enabled(__u16 subscribe, __u16 sn_type) { - __u16 sn_type; - int enabled = 1; + if (sn_type > SCTP_SN_TYPE_MAX) + return false; - if (sctp_ulpevent_is_notification(event)) { - sn_type = sctp_ulpevent_get_notification_type(event); - enabled = sctp_ulpevent_type_enabled(sn_type, mask); - } - return enabled; + return subscribe & (1 << (sn_type - SCTP_SN_TYPE_BASE)); } -#endif /* __sctp_ulpevent_h__ */ - - - +/* Given an event subscription, is this event enabled? */ +static inline bool sctp_ulpevent_is_enabled(const struct sctp_ulpevent *event, + __u16 subscribe) +{ + __u16 sn_type; + if (!sctp_ulpevent_is_notification(event)) + return true; + sn_type = sctp_ulpevent_get_notification_type(event); + return sctp_ulpevent_type_enabled(subscribe, sn_type); +} +#endif /* __sctp_ulpevent_h__ */ |