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net/sctp: Make wrappers for accessing in/out streams

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This patch introduces wrappers for accessing in/out streams indirectly.
This will enable to replace physically contiguous memory arrays
of streams with flexible arrays (or maybe any other appropriate
mechanism) which do memory allocation on a per-page basis.

Signed-off-by: Oleg Babin <obabin@virtuozzo.com>
Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Konstantin Khorenko
2018-08-10 20:11:42 +03:00
committed by David S. Miller
parent b70f1f3af4
commit 05364ca03c
9 changed files with 103 additions and 81 deletions
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22
net/sctp/stream_sched_prio.c
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@@ -75,10 +75,10 @@ static struct sctp_stream_priorities *sctp_sched_prio_get_head(
/* No luck. So we search on all streams now. */
for (i = 0; i < stream->outcnt; i++) {
if (!stream->out[i].ext)
if (!SCTP_SO(stream, i)->ext)
continue;
p = stream->out[i].ext->prio_head;
p = SCTP_SO(stream, i)->ext->prio_head;
if (!p)
/* Means all other streams won't be initialized
* as well.
@@ -165,7 +165,7 @@ static void sctp_sched_prio_sched(struct sctp_stream *stream,
static int sctp_sched_prio_set(struct sctp_stream *stream, __u16 sid,
__u16 prio, gfp_t gfp)
{
struct sctp_stream_out *sout = &stream->out[sid];
struct sctp_stream_out *sout = SCTP_SO(stream, sid);
struct sctp_stream_out_ext *soute = sout->ext;
struct sctp_stream_priorities *prio_head, *old;
bool reschedule = false;
@@ -186,7 +186,7 @@ static int sctp_sched_prio_set(struct sctp_stream *stream, __u16 sid,
return 0;
for (i = 0; i < stream->outcnt; i++) {
soute = stream->out[i].ext;
soute = SCTP_SO(stream, i)->ext;
if (soute && soute->prio_head == old)
/* It's still in use, nothing else to do here. */
return 0;
@@ -201,7 +201,7 @@ static int sctp_sched_prio_set(struct sctp_stream *stream, __u16 sid,
static int sctp_sched_prio_get(struct sctp_stream *stream, __u16 sid,
__u16 *value)
{
*value = stream->out[sid].ext->prio_head->prio;
*value = SCTP_SO(stream, sid)->ext->prio_head->prio;
return 0;
}
@@ -215,7 +215,7 @@ static int sctp_sched_prio_init(struct sctp_stream *stream)
static int sctp_sched_prio_init_sid(struct sctp_stream *stream, __u16 sid,
gfp_t gfp)
{
INIT_LIST_HEAD(&stream->out[sid].ext->prio_list);
INIT_LIST_HEAD(&SCTP_SO(stream, sid)->ext->prio_list);
return sctp_sched_prio_set(stream, sid, 0, gfp);
}
@@ -233,9 +233,9 @@ static void sctp_sched_prio_free(struct sctp_stream *stream)
*/
sctp_sched_prio_unsched_all(stream);
for (i = 0; i < stream->outcnt; i++) {
if (!stream->out[i].ext)
if (!SCTP_SO(stream, i)->ext)
continue;
prio = stream->out[i].ext->prio_head;
prio = SCTP_SO(stream, i)->ext->prio_head;
if (prio && list_empty(&prio->prio_sched))
list_add(&prio->prio_sched, &list);
}
@@ -255,7 +255,7 @@ static void sctp_sched_prio_enqueue(struct sctp_outq *q,
ch = list_first_entry(&msg->chunks, struct sctp_chunk, frag_list);
sid = sctp_chunk_stream_no(ch);
stream = &q->asoc->stream;
sctp_sched_prio_sched(stream, stream->out[sid].ext);
sctp_sched_prio_sched(stream, SCTP_SO(stream, sid)->ext);
}
static struct sctp_chunk *sctp_sched_prio_dequeue(struct sctp_outq *q)
@@ -297,7 +297,7 @@ static void sctp_sched_prio_dequeue_done(struct sctp_outq *q,
* this priority.
*/
sid = sctp_chunk_stream_no(ch);
soute = q->asoc->stream.out[sid].ext;
soute = SCTP_SO(&q->asoc->stream, sid)->ext;
prio = soute->prio_head;
sctp_sched_prio_next_stream(prio);
@@ -317,7 +317,7 @@ static void sctp_sched_prio_sched_all(struct sctp_stream *stream)
__u16 sid;
sid = sctp_chunk_stream_no(ch);
sout = &stream->out[sid];
sout = SCTP_SO(stream, sid);
if (sout->ext)
sctp_sched_prio_sched(stream, sout->ext);
}