----- Original Message -----
> From: "Luke Bigum" <luke.bi...@lmax.com>
> To: "linuxptp-users" <firstname.lastname@example.org>
> Sent: Tuesday, 4 October, 2016 15:18:05
> Subject: Re: [Linuxptp-users] issue with NetXtreme II BCM57810
> ----- Original Message -----
>> From: "Richard Cochran" <richardcoch...@gmail.com>
>> To: "Luke Bigum" <luke.bi...@lmax.com>
>> Cc: "linuxptp-users" <email@example.com>
>> Sent: Tuesday, 4 October, 2016 14:28:39
>> Subject: Re: [Linuxptp-users] issue with NetXtreme II BCM57810
>> I don't have this card nor was I involved in reviewing the driver.
>> The file, drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c, contains
>> the PHC stuff.
>> Looking at bnx2x_init_cyclecounter(), they have mult = shift = 1.
>> That implies that
>> nanoseconds = ticks / 2
>> and that their internal clock runs at 2 GHz!
>> Maybe they meant to have shift=0, or maybe your card has a (model
>> specific 1 GHz clock).
>> Anyhow, the testptp result is clear enough. You should take this up
>> with the driver maintainers.
> Thanks Richard, that's helpful. I'll track it down.
For the Internet record, Qlogic have fixed this in version 7.14.05 of their
10Gig driver pack. I've compiled this bnx2x driver against a 3.18 kernel and
the PHC advances at regular speed. The source and some binaries are available
I don't know when they will be added to the mainline kernel.
LMAX Exchange, Yellow Building, 1A Nicholas Road, London W11 4AN
Recognised by the most prestigious business and technology awards
2016 Best Trading & Execution, HFM US Technology Awards
2016, 2015, 2014, 2013 Best FX Trading Venue - ECN/MTF, WSL Institutional
2015 Winner, Deloitte UK Technology Fast 50
2015, 2014, 2013, One of the UK's fastest growing technology firms, The Sunday
Times Tech Track 100
2015 Winner, Deloitte EMEA Technology Fast 500
2015, 2014, 2013 Best Margin Sector Platform, Profit & Loss Readers' Choice
FX and CFDs are leveraged products that can result in losses exceeding your
deposit. They are not suitable for everyone so please ensure you fully
understand the risks involved.
This message and its attachments are confidential, may not be disclosed or used
by any person other than the addressee and are intended only for the named
recipient(s). This message is not intended for any recipient(s) who based on
their nationality, place of business, domicile or for any other reason, is/are
subject to local laws or regulations which prohibit the provision of such
products and services. This message is subject to the following terms
(http://lmax.com/pdf/general-disclaimers.pdf), if you cannot access these,
please notify us by replying to this email and we will send you the terms. If
you are not the intended recipient, please notify the sender immediately and
delete any copies of this message.
LMAX Exchange is the trading name of LMAX Limited. LMAX Limited operates a
multilateral trading facility. LMAX Limited is authorised and regulated by the
Financial Conduct Authority (firm registration number 509778) and is a company
registered in England and Wales (number 6505809).
LMAX Hong Kong Limited is a wholly-owned subsidiary of LMAX Limited. LMAX Hong
Kong is licensed by the Securities and Futures Commission in Hong Kong to
conduct Type 3 (leveraged foreign exchange trading) regulated activity with CE
Check out the vibrant tech community on one of the world's most
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
Linuxptp-users mailing list