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Message-ID: <CADvbK_dFw+FLV7yRd9R_xkUotWXe8=r2ptyaQmTjghvLQ9VE9Q@mail.gmail.com>
Date: Fri, 25 Jun 2021 12:23:41 -0400
From: Xin Long <lucien.xin@...il.com>
To: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc: network dev <netdev@...r.kernel.org>, davem <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
"linux-sctp @ vger . kernel . org" <linux-sctp@...r.kernel.org>,
David Laight <david.laight@...lab.com>
Subject: Re: [PATCH net-next 1/2] sctp: do black hole detection in search
complete state
On Thu, Jun 24, 2021 at 9:11 PM Marcelo Ricardo Leitner
<marcelo.leitner@...il.com> wrote:
>
> On Thu, Jun 24, 2021 at 11:48:08AM -0400, Xin Long wrote:
> > @@ -333,13 +328,15 @@ void sctp_transport_pl_recv(struct sctp_transport *t)
> > t->pl.probe_size += SCTP_PL_MIN_STEP;
> > if (t->pl.probe_size >= t->pl.probe_high) {
> > t->pl.probe_high = 0;
> > + t->pl.raise_count = 0;
> > t->pl.state = SCTP_PL_COMPLETE; /* Search -> Search Complete */
> >
> > t->pl.probe_size = t->pl.pmtu;
> > t->pathmtu = t->pl.pmtu + sctp_transport_pl_hlen(t);
> > sctp_assoc_sync_pmtu(t->asoc);
> > }
> > - } else if (t->pl.state == SCTP_PL_COMPLETE) {
> > + } else if (t->pl.state == SCTP_PL_COMPLETE && ++t->pl.raise_count == 30) {
>
> Please either break the condition into 2 lines or even in 2 if()s. The
> ++ operator here can easily go unnoticed otherwise.
will change it to:
} else if (t->pl.state == SCTP_PL_COMPLETE) {
t->pl.raise_count++;
if (t->pl.raise_count == 30) {
Thanks.
>
> > + /* Raise probe_size again after 30 * interval in Search Complete */
> > t->pl.state = SCTP_PL_SEARCH; /* Search Complete -> Search */
> > t->pl.probe_size += SCTP_PL_MIN_STEP;
> > }
> > --
> > 2.27.0
> >
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