From: Stephen Hemminger <shemminger@vyatta.com>
To: "Niccolò Belli" <darkbasic@linuxsystems.it>
Cc: netdev@vger.kernel.org
Subject: Re: sky2 still badly broken
Date: Thu, 3 May 2012 08:23:52 -0700 [thread overview]
Message-ID: <20120503082352.771acab3@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <4FA2527A.6020808@linuxsystems.it>
On Thu, 03 May 2012 11:40:10 +0200
Niccolò Belli <darkbasic@linuxsystems.it> wrote:
> Il 02/05/2012 20:56, Stephen Hemminger ha scritto:
> > It could be that your switch doesn't do autonegotiation or flow
> > control. You are getting receive fifo overflow errors.
>
> I don't have this problem with other NICs. Also transfer rate is very
> low (even 2 MB/s sometimes) while I get ~110MB/s with other NICs (and
> the same switch of course).
>
> Niccolò
The receiver on some versions of the chip can't keep up with full speed
of 1G bit/sec. The receive FIFO has hardware issues, and since I don't
work for Marvell, working around the problem is guesswork. Without exact
information all that can be done is have a timeout and blunt force reset
logic. The vendor driver sk98lin has the same brute force logic, but may
just not print the message.
next prev parent reply other threads:[~2012-05-03 15:23 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-27 20:15 sky2 still badly broken Niccolò Belli
2012-04-27 20:41 ` [RFT] sky2: fix status length check on older chips Stephen Hemminger
2012-04-27 20:48 ` David Miller
2012-04-27 20:55 ` Stephen Hemminger
2012-04-27 23:05 ` Niccolò Belli
2012-04-28 2:46 ` Stephen Hemminger
2012-04-28 10:25 ` Niccolò Belli
2012-04-30 16:19 ` Stephen Hemminger
2012-04-30 18:23 ` Niccolò Belli
2012-04-28 3:03 ` [PATCH] sky2: fix receive length error in mixed non-VLAN/VLAN traffic Stephen Hemminger
2012-04-28 3:05 ` Stephen Hemminger
2012-09-17 14:20 ` [RFT] sky2: fix status length check on older chips Ivan Minev
2012-04-30 19:25 ` sky2 still badly broken Stephen Hemminger
2012-04-30 23:50 ` Niccolò Belli
2012-05-02 15:12 ` Niccolò Belli
2012-05-02 18:56 ` Stephen Hemminger
2012-05-03 9:40 ` Niccolò Belli
2012-05-03 15:23 ` Stephen Hemminger [this message]
2012-05-03 18:06 ` Niccolò Belli
2012-05-03 18:15 ` Stephen Hemminger
2012-05-03 19:26 ` Niccolò Belli
2012-05-03 19:36 ` Niccolò Belli
2012-05-03 21:25 ` Stephen Hemminger
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120503082352.771acab3@nehalam.linuxnetplumber.net \
--to=shemminger@vyatta.com \
--cc=darkbasic@linuxsystems.it \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.