Date: Thu, 27 Feb 2003 14:23:45 -0300 From: "Daniel C. Sobral" <dcs@tcoip.com.br> To: Ruslan Ermilov <ru@FreeBSD.org> Cc: Jonathan Lemon <jlemon@FreeBSD.org>, Bill Paul <wpaul@FreeBSD.org>, src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/fxp if_fxp.c if_fxpreg.h if_fxpvar.h Message-ID: <3E5E49A1.9050507@tcoip.com.br> In-Reply-To: <20030227160017.GB88361@sunbay.com> References: <200302262212.h1QMC4L8017995@repoman.freebsd.org> <3E5DFD83.4070605@tcoip.com.br> <20030227122441.GF39346@sunbay.com> <3E5E0EEC.9020203@tcoip.com.br> <3E5E1D66.6080801@tcoip.com.br> <20030227160017.GB88361@sunbay.com>
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Ruslan Ermilov wrote:
> On Thu, Feb 27, 2003 at 11:15:02AM -0300, Daniel C. Sobral wrote:
>
>>Daniel C. Sobral wrote:
>>
>>>Ruslan Ermilov wrote:
>>>
>>>
>>>>On Thu, Feb 27, 2003 at 08:58:59AM -0300, Daniel C. Sobral wrote:
>>>>
>>>>
>>>>>Bill Paul wrote:
>>>>>
>>>>>
>>>>>>wpaul 2003/02/26 14:12:04 PST
>>>>>>
>>>>>>Modified files:
>>>>>> sys/dev/fxp if_fxp.c if_fxpreg.h if_fxpvar.h Log:
>>>>>>As previously threatened, add TCP/IP checksum offload support to
>>>>>>the fxp driver. This is enabled only for the 82550/82551 chips
>>>>>>(PCI revision code 12 or 13). RX and TX checksum offload are
>>>>>>both supported. Transmit offload is limited to TCP and UDP only
>>>>>>right now: there seems to be a problem with IP header checksumming
>>>>>>on transmit in some cases.
>>>>>
>>>>>
>>>>>I'm curious. Is there any way of knowing whether support has been
>>>>>detected and is in use? I did the pciconf trick you mentioned, but...
>>>>><shrug>
>>>>>
>>>>ifconfig(8) will tell you:
>>>>
>>>>xl0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
>>>> options=3<RXCSUM,TXCSUM>
>>>> ether 00:50:da:b4:10:5b
>>>> media: Ethernet autoselect (none)
>>>> status: no carrier
>>>>
>>>>"ifconfig -m" will tell you the list of supported capabilities.
>>>>
>>>>
>>>>
>>>>>Alas, when you say revision code 12 or 13... is that hex or decimal?
>>>>>pciconf shows some of mine as being 0d.
>>>>>
>>>>
>>>>0d == 13. :-)
>>>
>>>
>>>Unless Bill Paul meant 13 as being 0x13 == 19. He mentions pciconf,
>>>which shows just "0d", and would show just "13" for 0x13, so I'm still
>>>unsure. Well, I'll have a new kernel soon on my 5.x testbox, and check
>>>this out. Thanks for the ifconfig reply.
>>
>>So... how does one turn it on?
>>
>
> Will you be surprised to know that ifconfig(8) does this? ;-)
I would:
root@piratinga:/usr/src/sbin/ifconfig# ifconfig -m fxp2
fxp2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=8<VLAN_MTU>
capability list:
=b<RXCSUM,TXCSUM,VLAN_MTU>
ether 00:02:b3:8f:30:41
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
supported media:
media autoselect
media 100baseTX mediaopt full-duplex
media 100baseTX
media 10baseT/UTP mediaopt full-duplex
media 10baseT/UTP
media none
media 100baseTX mediaopt hw-loopback
root@piratinga:/usr/src/sbin/ifconfig# ifconfig fxp2 rxcsum
root@piratinga:/usr/src/sbin/ifconfig# ifconfig fxp2 txcsum
root@piratinga:/usr/src/sbin/ifconfig# ifconfig -m fxp2
fxp2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=8<VLAN_MTU>
capability list:
=b<RXCSUM,TXCSUM,VLAN_MTU>
ether 00:02:b3:8f:30:41
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
supported media:
media autoselect
media 100baseTX mediaopt full-duplex
media 100baseTX
media 10baseT/UTP mediaopt full-duplex
media 10baseT/UTP
media none
media 100baseTX mediaopt hw-loopback
root@piratinga:/usr/src/sbin/ifconfig#
> Jonathan forgot to document the "rxcsum", "txcsum", and
> "netcons" capabilities in the ifconfig(8) manpage.
Honestly, I thought this would have been configured with mediaopt. At
any rate, it doesn't work.
--
Daniel C. Sobral (8-DCS)
Gerencia de Operacoes
Divisao de Comunicacao de Dados
Coordenacao de Seguranca
TCO
Fones: 55-61-313-7654/Cel: 55-61-9618-0904
E-mail: Daniel.Capo@tco.net.br
Daniel.Sobral@tcoip.com.br
dcs@tcoip.com.br
Outros:
dcs@newsguy.com
dcs@freebsd.org
capo@notorious.bsdconspiracy.net
"I stopped believing in Santa Claus when I was six. Mother took me to
see him in a department store and he asked for my autograph."
-- Shirley Temple
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