1 files changed, 61 insertions, 0 deletions

diff --git a/include/net/sctp/stream_interleave.h b/include/net/sctp/stream_interleave.h
new file mode 100644
index 000000000000..6657711c8bc4
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+++ b/include/net/sctp/stream_interleave.h
@@ -0,0 +1,61 @@
+/* SCTP kernel implementation
+ * (C) Copyright Red Hat Inc. 2017
+ *
+ * These are definitions used by the stream schedulers, defined in RFC
+ * draft ndata (https://tools.ietf.org/html/draft-ietf-tsvwg-sctp-ndata-11)
+ *
+ * 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, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Please send any bug reports or fixes you make to the
+ * email addresses:
+ *    lksctp developers <linux-sctp@vger.kernel.org>
+ *
+ * Written or modified by:
+ *   Xin Long <lucien.xin@gmail.com>
+ */
+
+#ifndef __sctp_stream_interleave_h__
+#define __sctp_stream_interleave_h__
+
+struct sctp_stream_interleave {
+        __u16   data_chunk_len;
+        __u16   ftsn_chunk_len;
+        /* (I-)DATA process */
+        struct sctp_chunk *(*make_datafrag)(const struct sctp_association *asoc,
+                                            const struct sctp_sndrcvinfo *sinfo,
+                                            int len, __u8 flags, gfp_t gfp);
+        void    (*assign_number)(struct sctp_chunk *chunk);
+        bool    (*validate_data)(struct sctp_chunk *chunk);
+        int     (*ulpevent_data)(struct sctp_ulpq *ulpq,
+                                 struct sctp_chunk *chunk, gfp_t gfp);
+        int     (*enqueue_event)(struct sctp_ulpq *ulpq,
+                                 struct sctp_ulpevent *event);
+        void    (*renege_events)(struct sctp_ulpq *ulpq,
+                                 struct sctp_chunk *chunk, gfp_t gfp);
+        void    (*start_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
+        void    (*abort_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
+        /* (I-)FORWARD-TSN process */
+        void    (*generate_ftsn)(struct sctp_outq *q, __u32 ctsn);
+        bool    (*validate_ftsn)(struct sctp_chunk *chunk);
+        void    (*report_ftsn)(struct sctp_ulpq *ulpq, __u32 ftsn);
+        void    (*handle_ftsn)(struct sctp_ulpq *ulpq,
+                               struct sctp_chunk *chunk);
+};
+
+void sctp_stream_interleave_init(struct sctp_stream *stream);
+
+#endif /* __sctp_stream_interleave_h__ */