From: Corey Hickey <bugfood-ml@fatooh•org>
To: Patrick McHardy <kaber@trash•net>,
Linux Netdev List <netdev@vger•kernel.org>
Subject: Re: [PATCH 01/10] Preparatory refactoring part 1.
Date: Mon, 01 Oct 2007 13:46:44 -0700 [thread overview]
Message-ID: <47015CB4.7000102@fatooh.org> (raw)
In-Reply-To: <4700F54A.6070408@trash.net>
Patrick McHardy wrote:
> Corey Hickey wrote:
>> Make a new function sfq_q_enqueue() that operates directly on the
>> queue data. This will be useful for implementing sfq_change() in
>> a later patch. A pleasant side-effect is reducing most of the
>> duplicate code in sfq_enqueue() and sfq_requeue().
>>
>> Similarly, make a new function sfq_q_dequeue().
>>
>> Signed-off-by: Corey Hickey <bugfood-ml@fatooh•org>
>> ---
>> net/sched/sch_sfq.c | 72 +++++++++++++++++++++++++++------------------------
>> 1 files changed, 38 insertions(+), 34 deletions(-)
>>
>> diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
>> index 3a23e30..57485ef 100644
>> --- a/net/sched/sch_sfq.c
>> +++ b/net/sched/sch_sfq.c
>>
>
>
> The sfq_q_enqueue part looks fine.
>
>>
>> - sch->qstats.drops++;
>
>
> A line in the changelog explaining that this was increased twice
> would have been nice.
Certainly; I think I didn't realize, when you originally pointed out the
duplicate incrementing, that it was a bug in the original version and
not in my patch. Otherwise, I would have sent it as a separate patch.
If a note in this patch will suffice, though, I'll definitely do so.
>> sfq_drop(sch);
>> return NET_XMIT_CN;
>> }
>>
>> -
>> -
>> -
>> -static struct sk_buff *
>> -sfq_dequeue(struct Qdisc* sch)
>> +static struct
>> +sk_buff *sfq_q_dequeue(struct sfq_sched_data *q)
>
>
> What is this function needed for?
It gets used in sfq_change for moving packets from the old queue into
the new one. In this case, we don't want to modify sch->q.qlen or
sch->qstats.backlog, since those don't actually change.
while ((skb = sfq_q_dequeue(q)) != NULL)
sfq_q_enqueue(skb, &tmp, SFQ_TAIL);
I'll improve the description of this patch to make that more clear.
-Corey
next prev parent reply other threads:[~2007-10-01 20:46 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-28 22:52 SFQ: backport some features from ESFQ (try 4) Corey Hickey
2007-09-28 22:52 ` [PATCH 01/10] Preparatory refactoring part 1 Corey Hickey
2007-10-01 13:25 ` Patrick McHardy
2007-10-01 20:46 ` Corey Hickey [this message]
2007-10-02 3:17 ` Patrick McHardy
2007-09-28 22:52 ` [PATCH 02/10] Preparatory refactoring part 2 Corey Hickey
2007-10-01 13:33 ` Patrick McHardy
2007-10-01 20:46 ` Corey Hickey
2007-10-02 3:19 ` Patrick McHardy
2007-09-28 22:52 ` [PATCH 03/10] Move two functions Corey Hickey
2007-10-01 13:27 ` Patrick McHardy
2007-10-01 20:46 ` Corey Hickey
2007-09-28 22:52 ` [PATCH 04/10] Make "depth" (number of queues) user-configurable: Corey Hickey
2007-09-28 22:52 ` [PATCH 05/10] Add divisor Corey Hickey
2007-10-01 13:38 ` Patrick McHardy
2007-10-01 20:47 ` Corey Hickey
2007-09-28 22:52 ` [PATCH 06/10] Make qdisc changeable Corey Hickey
2007-10-01 13:43 ` Patrick McHardy
2007-10-01 20:47 ` Corey Hickey
2007-09-28 22:52 ` [PATCH 07/10] Remove comments about hardcoded values Corey Hickey
2007-09-28 22:52 ` [PATCH 08/10] Multiply perturb_period by HZ when used rather than when assigned Corey Hickey
2007-09-28 22:52 ` [PATCH 09/10] Change perturb_period to unsigned Corey Hickey
2007-10-01 13:45 ` Patrick McHardy
2007-10-01 20:47 ` Corey Hickey
2007-09-28 22:52 ` [PATCH 10/10] Use nested compat attributes to pass parameters Corey Hickey
2007-10-01 13:54 ` Patrick McHardy
2007-10-01 20:47 ` Corey Hickey
2007-10-02 3:21 ` Patrick McHardy
2007-09-28 22:54 ` sfq Corey Hickey
2007-09-28 22:57 ` sfq (iproute2 patches) Corey Hickey
2007-09-28 22:54 ` [PATCH 1/3] SFQ: Support changing depth and divisor Corey Hickey
2007-09-28 22:54 ` [PATCH 2/3] Change perturb_period to unsigned Corey Hickey
2007-09-28 22:54 ` [PATCH 3/3] Use nested compat attributes for passing parameters to the kernel Corey Hickey
2007-09-29 15:38 ` SFQ: backport some features from ESFQ (try 4) Patrick McHardy
2007-09-29 17:36 ` Corey Hickey
-- strict thread matches above, loose matches on Subject: below --
2007-08-25 22:26 [PATCH 00/10] SFQ: backport some features from ESFQ (try 3) Corey Hickey
2007-08-25 22:26 ` [PATCH 01/10] Preparatory refactoring part 1 Corey Hickey
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