On Thu, 31 Mar 2022 at 05:44, Marcelo Ricardo Leitner
<marcelo.leitner@xxxxxxxxx> wrote:
>
> On Wed, Mar 30, 2022 at 01:06:02PM +1000, Jamie Bainbridge wrote:
> > Singleton chunks (INIT, HEARTBEAT PMTU probes, and SHUTDOWN-
> > COMPLETE) are not counted in SCTP_GET_ASOC_STATS "sas_octrlchunks"
> > counter available to the assoc owner.
> >
> > These are all control chunks so they should be counted as such.
> >
> > Add counting of singleton chunks so they are properly accounted for.
> >
> > Fixes: 196d67593439 ("sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call")
> > Signed-off-by: Jamie Bainbridge <jamie.bainbridge@xxxxxxxxx>
> > ---
> > net/sctp/outqueue.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
> > index a18609f608fb786b2532a4febbd72a9737ab906c..bed34918b41f24810677adc0cd4fbd0859396a02 100644
> > --- a/net/sctp/outqueue.c
> > +++ b/net/sctp/outqueue.c
> > @@ -914,6 +914,7 @@ static void sctp_outq_flush_ctrl(struct sctp_flush_ctx *ctx)
> > ctx->asoc->base.sk->sk_err = -error;
> > return;
> > }
> > + ctx->asoc->stats.octrlchunks++;
> > break;
> >
> > case SCTP_CID_ABORT:
> > @@ -939,6 +940,7 @@ static void sctp_outq_flush_ctrl(struct sctp_flush_ctx *ctx)
> > case SCTP_CID_HEARTBEAT:
> > if (chunk->pmtu_probe) {
> > sctp_packet_singleton(ctx->transport, chunk, ctx->gfp);
> > + ctx->asoc->stats.octrlchunks++;
>
> sctp_packet_singleton can fail. It shouldn't be propagated to the
> socket but octrlchunks shouldn't be incremented then. Not too diferent
> from the one above.
Ah, thanks for the catch! Is this syntax assigning to error okay?
error = sctp_packet_singleton(ctx->transport, chunk, ctx->gfp);
if (!error)
ctx->asoc->stats.octrlchunks++;
break;
> > break;
> > }
> > fallthrough;
> > --
> > 2.35.1
> >
