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27#ifndef __sctp_ulpevent_h__
28#define __sctp_ulpevent_h__
29
30
31
32
33
34
35
36
37
38struct sctp_ulpevent {
39 struct sctp_association *asoc;
40 struct sctp_chunk *chunk;
41 unsigned int rmem_len;
42 union {
43 __u32 mid;
44 __u16 ssn;
45 };
46 union {
47 __u32 ppid;
48 __u32 fsn;
49 };
50 __u32 tsn;
51 __u32 cumtsn;
52 __u16 stream;
53 __u16 flags;
54 __u16 msg_flags;
55} __packed;
56
57
58static inline struct sk_buff *sctp_event2skb(const struct sctp_ulpevent *ev)
59{
60 return container_of((void *)ev, struct sk_buff, cb);
61}
62
63
64static inline struct sctp_ulpevent *sctp_skb2event(struct sk_buff *skb)
65{
66 return (struct sctp_ulpevent *)skb->cb;
67}
68
69void sctp_ulpevent_free(struct sctp_ulpevent *);
70int sctp_ulpevent_is_notification(const struct sctp_ulpevent *);
71unsigned int sctp_queue_purge_ulpevents(struct sk_buff_head *list);
72
73struct sctp_ulpevent *sctp_ulpevent_make_assoc_change(
74 const struct sctp_association *asoc,
75 __u16 flags,
76 __u16 state,
77 __u16 error,
78 __u16 outbound,
79 __u16 inbound,
80 struct sctp_chunk *chunk,
81 gfp_t gfp);
82
83void sctp_ulpevent_notify_peer_addr_change(struct sctp_transport *transport,
84 int state, int error);
85
86struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
87 const struct sctp_association *asoc,
88 struct sctp_chunk *chunk,
89 __u16 flags,
90 gfp_t gfp);
91struct sctp_ulpevent *sctp_ulpevent_make_send_failed(
92 const struct sctp_association *asoc,
93 struct sctp_chunk *chunk,
94 __u16 flags,
95 __u32 error,
96 gfp_t gfp);
97
98struct sctp_ulpevent *sctp_ulpevent_make_send_failed_event(
99 const struct sctp_association *asoc,
100 struct sctp_chunk *chunk,
101 __u16 flags,
102 __u32 error,
103 gfp_t gfp);
104
105struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event(
106 const struct sctp_association *asoc,
107 __u16 flags,
108 gfp_t gfp);
109
110struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
111 const struct sctp_association *asoc,
112 __u32 indication, __u32 sid, __u32 seq,
113 __u32 flags, gfp_t gfp);
114
115struct sctp_ulpevent *sctp_ulpevent_make_adaptation_indication(
116 const struct sctp_association *asoc, gfp_t gfp);
117
118struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
119 struct sctp_chunk *chunk,
120 gfp_t gfp);
121
122struct sctp_ulpevent *sctp_ulpevent_make_authkey(
123 const struct sctp_association *asoc, __u16 key_id,
124 __u32 indication, gfp_t gfp);
125
126struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
127 const struct sctp_association *asoc, gfp_t gfp);
128
129struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
130 const struct sctp_association *asoc, __u16 flags,
131 __u16 stream_num, __be16 *stream_list, gfp_t gfp);
132
133struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event(
134 const struct sctp_association *asoc, __u16 flags,
135 __u32 local_tsn, __u32 remote_tsn, gfp_t gfp);
136
137struct sctp_ulpevent *sctp_ulpevent_make_stream_change_event(
138 const struct sctp_association *asoc, __u16 flags,
139 __u32 strchange_instrms, __u32 strchange_outstrms, gfp_t gfp);
140
141struct sctp_ulpevent *sctp_make_reassembled_event(
142 struct net *net, struct sk_buff_head *queue,
143 struct sk_buff *f_frag, struct sk_buff *l_frag);
144
145void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
146 struct msghdr *);
147void sctp_ulpevent_read_rcvinfo(const struct sctp_ulpevent *event,
148 struct msghdr *);
149void sctp_ulpevent_read_nxtinfo(const struct sctp_ulpevent *event,
150 struct msghdr *, struct sock *sk);
151
152__u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event);
153
154static inline void sctp_ulpevent_type_set(__u16 *subscribe,
155 __u16 sn_type, __u8 on)
156{
157 if (sn_type > SCTP_SN_TYPE_MAX)
158 return;
159
160 if (on)
161 *subscribe |= (1 << (sn_type - SCTP_SN_TYPE_BASE));
162 else
163 *subscribe &= ~(1 << (sn_type - SCTP_SN_TYPE_BASE));
164}
165
166
167static inline bool sctp_ulpevent_type_enabled(__u16 subscribe, __u16 sn_type)
168{
169 if (sn_type > SCTP_SN_TYPE_MAX)
170 return false;
171
172 return subscribe & (1 << (sn_type - SCTP_SN_TYPE_BASE));
173}
174
175
176static inline bool sctp_ulpevent_is_enabled(const struct sctp_ulpevent *event,
177 __u16 subscribe)
178{
179 __u16 sn_type;
180
181 if (!sctp_ulpevent_is_notification(event))
182 return true;
183
184 sn_type = sctp_ulpevent_get_notification_type(event);
185
186 return sctp_ulpevent_type_enabled(subscribe, sn_type);
187}
188
189#endif
190