7  * These functions manipulate sctp stream queue/scheduling.
26 static void sctp_sched_prio_unsched_all(struct sctp_stream *stream);
41 			struct sctp_stream *stream, int prio, gfp_t gfp)  in sctp_sched_prio_new_head()  argument
59 			struct sctp_stream *stream, int prio, gfp_t gfp)  in sctp_sched_prio_get_head()  argument
67 	list_for_each_entry(p, &stream->prio_list, prio_sched) {  in sctp_sched_prio_get_head()
75 	for (i = 0; i < stream->outcnt; i++) {  in sctp_sched_prio_get_head()
76 		if (!SCTP_SO(stream, i)->ext)  in sctp_sched_prio_get_head()
79 		p = SCTP_SO(stream, i)->ext->prio_head;  in sctp_sched_prio_get_head()
90 	return sctp_sched_prio_new_head(stream, prio, gfp);  in sctp_sched_prio_get_head()
114 			/* Try to move to the next stream */  in sctp_sched_prio_unsched()
119 		/* Also unsched the priority if this was the last stream */  in sctp_sched_prio_unsched()
122 			/* If there is no stream left, clear next */  in sctp_sched_prio_unsched()
130 static void sctp_sched_prio_sched(struct sctp_stream *stream,  in sctp_sched_prio_sched()  argument
141 	/* Schedule the stream. If there is a next, we schedule the new  in sctp_sched_prio_sched()
153 	list_for_each_entry(prio, &stream->prio_list, prio_sched) {  in sctp_sched_prio_sched()
160 	list_add_tail(&prio_head->prio_sched, &stream->prio_list);  in sctp_sched_prio_sched()
163 static int sctp_sched_prio_set(struct sctp_stream *stream, __u16 sid,  in sctp_sched_prio_set()  argument
166 	struct sctp_stream_out *sout = SCTP_SO(stream, sid);  in sctp_sched_prio_set()
175 	prio_head = sctp_sched_prio_get_head(stream, prio, gfp);  in sctp_sched_prio_set()
182 		sctp_sched_prio_sched(stream, soute);  in sctp_sched_prio_set()
188 static int sctp_sched_prio_get(struct sctp_stream *stream, __u16 sid,  in sctp_sched_prio_get()  argument
191 	*value = SCTP_SO(stream, sid)->ext->prio_head->prio;  in sctp_sched_prio_get()
195 static int sctp_sched_prio_init(struct sctp_stream *stream)  in sctp_sched_prio_init()  argument
197 	INIT_LIST_HEAD(&stream->prio_list);  in sctp_sched_prio_init()
202 static int sctp_sched_prio_init_sid(struct sctp_stream *stream, __u16 sid,  in sctp_sched_prio_init_sid()  argument
205 	INIT_LIST_HEAD(&SCTP_SO(stream, sid)->ext->prio_list);  in sctp_sched_prio_init_sid()
206 	return sctp_sched_prio_set(stream, sid, 0, gfp);  in sctp_sched_prio_init_sid()
209 static void sctp_sched_prio_free_sid(struct sctp_stream *stream, __u16 sid)  in sctp_sched_prio_free_sid()  argument
211 	sctp_sched_prio_head_put(SCTP_SO(stream, sid)->ext->prio_head);  in sctp_sched_prio_free_sid()
212 	SCTP_SO(stream, sid)->ext->prio_head = NULL;  in sctp_sched_prio_free_sid()
215 static void sctp_sched_prio_free(struct sctp_stream *stream)  in sctp_sched_prio_free()  argument
227 	sctp_sched_prio_unsched_all(stream);  in sctp_sched_prio_free()
228 	for (i = 0; i < stream->outcnt; i++) {  in sctp_sched_prio_free()
229 		if (!SCTP_SO(stream, i)->ext)  in sctp_sched_prio_free()
231 		prio = SCTP_SO(stream, i)->ext->prio_head;  in sctp_sched_prio_free()
244 	struct sctp_stream *stream;  in sctp_sched_prio_enqueue()  local
250 	stream = &q->asoc->stream;  in sctp_sched_prio_enqueue()
251 	sctp_sched_prio_sched(stream, SCTP_SO(stream, sid)->ext);  in sctp_sched_prio_enqueue()
256 	struct sctp_stream *stream = &q->asoc->stream;  in sctp_sched_prio_dequeue()  local
266 	 * one or the first chunk on the next active stream.  in sctp_sched_prio_dequeue()
268 	if (stream->out_curr) {  in sctp_sched_prio_dequeue()
269 		soute = stream->out_curr->ext;  in sctp_sched_prio_dequeue()
271 		prio = list_entry(stream->prio_list.next,  in sctp_sched_prio_dequeue()
289 	/* Last chunk on that msg, move to the next stream on  in sctp_sched_prio_dequeue_done()
293 	soute = SCTP_SO(&q->asoc->stream, sid)->ext;  in sctp_sched_prio_dequeue_done()
302 static void sctp_sched_prio_sched_all(struct sctp_stream *stream)  in sctp_sched_prio_sched_all()  argument
308 	asoc = container_of(stream, struct sctp_association, stream);  in sctp_sched_prio_sched_all()
313 		sout = SCTP_SO(stream, sid);  in sctp_sched_prio_sched_all()
315 			sctp_sched_prio_sched(stream, sout->ext);  in sctp_sched_prio_sched_all()
319 static void sctp_sched_prio_unsched_all(struct sctp_stream *stream)  in sctp_sched_prio_unsched_all()  argument
324 	list_for_each_entry_safe(p, tmp, &stream->prio_list, prio_sched)  in sctp_sched_prio_unsched_all()