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Date:      Thu, 27 Feb 2003 17:45:27 +0200
From:      Ruslan Ermilov <ru@freebsd.org>
To:        "Daniel C. Sobral" <dcs@tcoip.com.br>
Cc:        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:  <20030227154527.GA88361@sunbay.com>
In-Reply-To: <3E5E0EEC.9020203@tcoip.com.br>
References:  <200302262212.h1QMC4L8017995@repoman.freebsd.org> <3E5DFD83.4070605@tcoip.com.br> <20030227122441.GF39346@sunbay.com> <3E5E0EEC.9020203@tcoip.com.br>

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On Thu, Feb 27, 2003 at 10:13:16AM -0300, 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=20
> >>>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=20
> >>detected and is in use? I did the pciconf trick you mentioned, but...=
=20
> >><shrug>
> >>
> >ifconfig(8) will tell you:
> >
> >xl0: flags=3D8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
> >        options=3D3<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?=20
> >>pciconf shows some of mine as being 0d.
> >>
> >
> >0d =3D=3D 13.  :-)
>=20
> Unless Bill Paul meant 13 as being 0x13 =3D=3D 19. He mentions pciconf,=
=20
> which shows just "0d", and would show just "13" for 0x13, so I'm still=20
> unsure. Well, I'll have a new kernel soon on my 5.x testbox, and check=20
> this out. Thanks for the ifconfig reply.
>=20
Laziness?  :-)

if_fxpreg.h:#define FXP_REV_82550               12
if_fxpreg.h:#define FXP_REV_82550_C             13      /* 82550 C stepping=
 */


Cheers,
--=20
Ruslan Ermilov		Sysadmin and DBA,
ru@sunbay.com		Sunbay Software AG,
ru@FreeBSD.org		FreeBSD committer,
+380.652.512.251	Simferopol, Ukraine

http://www.FreeBSD.org	The Power To Serve
http://www.oracle.com	Enabling The Information Age

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