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Merge branch 'sctp-shrink-stream-outq-in-the-right-place'

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Xin Long says:

====================
sctp: shrink stream outq in the right place

Patch 1 is an improvement, and Patch 2 is a bug fix.
====================

Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2020-07-22 18:00:12 -07:00
commit f659173364
1 changed files with 18 additions and 9 deletions
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27
net/sctp/stream.c
View File

@ -22,17 +22,11 @@
#include <net/sctp/sm.h>
#include <net/sctp/stream_sched.h>
/* Migrates chunks from stream queues to new stream queues if needed,
* but not across associations. Also, removes those chunks to streams
* higher than the new max.
*/
static void sctp_stream_outq_migrate(struct sctp_stream *stream,
struct sctp_stream *new, __u16 outcnt)
static void sctp_stream_shrink_out(struct sctp_stream *stream, __u16 outcnt)
{
struct sctp_association *asoc;
struct sctp_chunk *ch, *temp;
struct sctp_outq *outq;
int i;
asoc = container_of(stream, struct sctp_association, stream);
outq = &asoc->outqueue;
@ -56,6 +50,19 @@ static void sctp_stream_outq_migrate(struct sctp_stream *stream,
sctp_chunk_free(ch);
}
}
/* Migrates chunks from stream queues to new stream queues if needed,
* but not across associations. Also, removes those chunks to streams
* higher than the new max.
*/
static void sctp_stream_outq_migrate(struct sctp_stream *stream,
struct sctp_stream *new, __u16 outcnt)
{
int i;
if (stream->outcnt > outcnt)
sctp_stream_shrink_out(stream, outcnt);
if (new) {
/* Here we actually move the old ext stuff into the new
@ -1037,11 +1044,13 @@ struct sctp_chunk *sctp_process_strreset_resp(
nums = ntohs(addstrm->number_of_streams);
number = stream->outcnt - nums;
if (result == SCTP_STRRESET_PERFORMED)
if (result == SCTP_STRRESET_PERFORMED) {
for (i = number; i < stream->outcnt; i++)
SCTP_SO(stream, i)->state = SCTP_STREAM_OPEN;
else
} else {
sctp_stream_shrink_out(stream, number);
stream->outcnt = number;
}
*evp = sctp_ulpevent_make_stream_change_event(asoc, flags,
0, nums, GFP_ATOMIC);