netdev - Re: [PATCH] sctp: be mroe restrictive in transport selection on bundled sacks

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Message-ID: <20120627132244.GD19313@hmsreliant.think-freely.org>
Date:	Wed, 27 Jun 2012 09:22:44 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	Vlad Yasevich <vyasevich@...il.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-sctp@...r.kernel.org
Subject: Re: [PATCH] sctp: be mroe restrictive in transport selection on
 bundled sacks

On Wed, Jun 27, 2012 at 09:20:57AM -0400, Vlad Yasevich wrote:
> On 06/27/2012 06:24 AM, Neil Horman wrote:
> >On Tue, Jun 26, 2012 at 09:05:04PM -0700, David Miller wrote:
> >>From: Neil Horman<nhorman@...driver.com>
> >>Date: Tue, 26 Jun 2012 16:31:44 -0400
> >>
> >>>@@ -240,15 +240,20 @@ static sctp_xmit_t sctp_packet_bundle_sack(struct sctp_packet *pkt,
> >>>  	 */
> >>>  	if (sctp_chunk_is_data(chunk)&&  !pkt->has_sack&&
> >>>  	!pkt->has_cookie_echo) {
> >>>-		struct sctp_association *asoc;
> >>>  		struct timer_list *timer;
> >>>-		asoc = pkt->transport->asoc;
> >>>+		struct sctp_association *asoc = pkt->transport->asoc;
> >>>+		struct sctp_transport *trans;
> >>>+
> >>>  		timer =&asoc->timers[SCTP_EVENT_TIMEOUT_SACK];
> >>>
> >>>  		/* If the SACK timer is running, we have a pending SACK */
> >>>  		if (timer_pending(timer)) {
> >>>  			struct sctp_chunk *sack;
> >>>  			asoc->a_rwnd = asoc->rwnd;
> >>>+
> >>>+			if (chunk->transport&&  !chunk->transport->moved_ctsn)
> >>>+				return retval;
> >>>+
> >>>  			sack = sctp_make_sack(asoc);
> >>>  			if (sack) {
> >>>  				retval = sctp_packet_append_chunk(pkt, sack);
> >>
> >>The new local variable 'trans' seems to be unused.
> >>
> >Crap, thank you Dave, that was a holdover from an initial pass I had made in
> >writing this.  I'll repost with that removed once Vald has a chance to look this
> >over
> >Neil
> >
> 
> Also, may want to move a_rwnd adjustment to after the new if clause.
> No sense adjusting it if we are just going to bail.
> 
> -vlad
> 

copy that, I'll make both changes and repost.  Thanks!
Neil

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