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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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13
net/sctp/stream_sched.c
View file

@ -161,7 +161,7 @@ int sctp_sched_set_sched(struct sctp_association *asoc,
/* Give the next scheduler a clean slate. */
for (i = 0; i < asoc->stream.outcnt; i++) {
void *p = asoc->stream.out[i].ext;
void *p = SCTP_SO(&asoc->stream, i)->ext;
if (!p)
continue;
@ -175,7 +175,7 @@ int sctp_sched_set_sched(struct sctp_association *asoc,
asoc->outqueue.sched = n;
n->init(&asoc->stream);
for (i = 0; i < asoc->stream.outcnt; i++) {
if (!asoc->stream.out[i].ext)
if (!SCTP_SO(&asoc->stream, i)->ext)
continue;
ret = n->init_sid(&asoc->stream, i, GFP_KERNEL);
@ -217,7 +217,7 @@ int sctp_sched_set_value(struct sctp_association *asoc, __u16 sid,
if (sid >= asoc->stream.outcnt)
return -EINVAL;
if (!asoc->stream.out[sid].ext) {
if (!SCTP_SO(&asoc->stream, sid)->ext) {
int ret;
ret = sctp_stream_init_ext(&asoc->stream, sid);
@ -234,7 +234,7 @@ int sctp_sched_get_value(struct sctp_association *asoc, __u16 sid,
if (sid >= asoc->stream.outcnt)
return -EINVAL;
if (!asoc->stream.out[sid].ext)
if (!SCTP_SO(&asoc->stream, sid)->ext)
return 0;
return asoc->outqueue.sched->get(&asoc->stream, sid, value);
@ -252,7 +252,7 @@ void sctp_sched_dequeue_done(struct sctp_outq *q, struct sctp_chunk *ch)
* priority stream comes in.
*/
sid = sctp_chunk_stream_no(ch);
sout = &q->asoc->stream.out[sid];
sout = SCTP_SO(&q->asoc->stream, sid);
q->asoc->stream.out_curr = sout;
return;
}
@ -272,8 +272,9 @@ void sctp_sched_dequeue_common(struct sctp_outq *q, struct sctp_chunk *ch)
int sctp_sched_init_sid(struct sctp_stream *stream, __u16 sid, gfp_t gfp)
{
struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
struct sctp_stream_out_ext *ext = SCTP_SO(stream, sid)->ext;
INIT_LIST_HEAD(&stream->out[sid].ext->outq);
INIT_LIST_HEAD(&ext->outq);
return sched->init_sid(stream, sid, gfp);
}