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Re: [patch] ipvs: off by one in set_sctp_state()

To: Julian Anastasov <ja@xxxxxx>
Subject: Re: [patch] ipvs: off by one in set_sctp_state()
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>, Wensong Zhang <wensong@xxxxxxxxxxxx>, Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>, Patrick McHardy <kaber@xxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, netdev@xxxxxxxxxxxxxxx, lvs-devel@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, netfilter@xxxxxxxxxxxxxxx, coreteam@xxxxxxxxxxxxx
From: Simon Horman <horms@xxxxxxxxxxxx>
Date: Tue, 23 Apr 2013 11:22:43 +0900
On Mon, Apr 22, 2013 at 09:03:28AM +0300, Julian Anastasov wrote:
> 
>       Hello,
> 
> On Mon, 22 Apr 2013, Simon Horman wrote:
> 
> > >   There are more confusing (still, non-fatal)
> > > problems in this IPVS-SCTP support, eg.
> > > 
> > >         if (direction == IP_VS_DIR_OUTPUT)
> > > -               event++;
> > > +               event *= 2;
> > > 
> > >   I guess we are running with wrong timeouts.
> > 
> > IMHO there seem to be many problems with SCTP, but it is good to
> > fix the ones we find as we find them.
> 
>       At the time I found it (during IPVS optimizations
> development), it didn't looked fatal, I preferred to
> allocate more time for SCTP for debugging.
> 
> > Would you like to make a patch for the above change or should I?
> 
>       May be the code is correct, my mistake. I was
> confused from the order in sctp_events[] but ipvs_sctp_event_t
> allocates values for _SER states.

Thanks, it sounds like we should study things more carefully
before making any changes.

> > >   Also, I'm not sure we support properly the
> > > one-way states as done for TCP (IP_VS_DIR_INPUT_ONLY).
> > > May be this code deserves more serious review, for example,
> > > net/netfilter/nf_conntrack_proto_sctp.c looks as good
> > > source for comparison.
> > 
> > I believe it does need a more serious review.
> 
> Regards
> 
> --
> Julian Anastasov <ja@xxxxxx>
> 
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