NDIS support sous Free

'Lut,

Je viens de voir passer un commit de Bill Paul concernant le NDISulator,
qui comme son nom l'indique permet d'utiliser des drivers ndis (windows)
sous Free.

Même si cela peut encourager les fondeurs à ne pas dévoiler les specs de
leurs chipsets, c'est aussi la possibilité d'utiliser ces chipsets
lorsque l'on ne peut pas faire autrement.

Enfin le boulot me semble assez génial, et l'introduction du log est
comique ;)

From: Bill Paul <wpaul@FreeBSD.org>
Subject: cvs commit: src/usr.sbin Makefile src/sys/modules Makefile
src/sys/modules/if_ndis Makefile src/sys/modules/ndis Makefile
src/sys/conf files.i386 src/sys/compat/ndis cfg_var.h hal_var.h
kern_ndis.c ndis_var.h ntoskrnl_var.h pe_var.h resource_var.h ...
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
Date: Thu, 11 Dec 2003 14:34:37 -0800 (PST)

wpaul 2003/12/11 14:34:37 PST

FreeBSD src repository

Modified files:
usr.sbin Makefile
sys/modules Makefile
sys/conf files.i386
share/man/man4/man4.i386 Makefile
Added files:
sys/modules/if_ndis Makefile
sys/modules/ndis Makefile
sys/compat/ndis cfg_var.h hal_var.h kern_ndis.c
ndis_var.h ntoskrnl_var.h pe_var.h
resource_var.h subr_hal.c subr_ndis.c
subr_ntoskrnl.c subr_pe.c
sys/dev/if_ndis if_ndis.c if_ndisvar.h
share/man/man4/man4.i386 ndis.4
Log:
Commit the first cut of Project Evil, also known as the NDISulator.

Yes, it's what you think it is. Yes, you should run away now.

This is a special compatibility module for allowing Windows NDIS
miniport network drivers to be used with FreeBSD/x86. This provides
_binary_ NDIS compatibility (not source): you can run NDIS driver
code, but you can't build it. There are three main parts:

sys/compat/ndis: the NDIS compat API, which provides binary
compatibility functions for many routines in NDIS.SYS, HAL.dll
and ntoskrnl.exe in Windows (these are the three modules that
most NDIS miniport drivers use). The compat module also contains
a small PE relocator/dynalinker which relocates the Windows .SYS
image and then patches in our native routines.

sys/dev/if_ndis: the if_ndis driver wrapper. This module makes
use of the ndis compat API and can be compiled with a specially
prepared binary image file (ndis_driver_data.h) containing the
Windows .SYS image and registry key information parsed out of the
accompanying .INF file. Once if_ndis.ko is built, it can be loaded
and unloaded just like a native FreeBSD kenrel module.

usr.sbin/ndiscvt: a special utility that converts foo.sys and foo.inf
into an ndis_driver_data.h file that can be compiled into if_ndis.o.
Contains an .inf file parser graciously provided by Matt Dodd (and
mercilessly hacked upon by me) that strips out device ID info and
registry key info from a .INF file and packages it up with a binary
image array. The ndiscvt(8) utility also does some manipulation of
the segments within the .sys file to make life easier for the kernel
loader. (Doing the manipulation here saves the kernel code from having
to move things around later, which would waste memory.)

ndiscvt is only built for the i386 arch. Only files.i386 has been
updated, and none of this is turned on in GENERIC. It should probably
work on pc98. I have no idea about amd64 or ia64 at this point.

This is still a work in progress. I estimate it's about %85 done, but
I want it under CVS control so I can track subsequent changes. It has
been tested with exactly three drivers: the LinkSys LNE100TX v4 driver
(Lne100v4.sys), the sample Intel 82559 driver from the Windows DDK
(e100bex.sys) and the Broadcom BCM43xx wireless driver (bcmwl5.sys). It
still needs to have a net80211 stuff added to it. To use it, you would
do something like this:

# cd /sys/modules/ndis
# make; make load
# cd /sys/modules/if_ndis
# ndiscvt -i /path/to/foo.inf -s /path/to/foo.sys -o ndis_driver_data.h
# make; make load
# sysctl -a | grep ndis

All registry keys are mapped to sysctl nodes. Sometimes drivers refer
to registry keys that aren't mentioned in foo.inf. If this happens,
the NDIS API module creates sysctl nodes for these keys on the fly so
you can tweak them.

An example usage of the Broadcom wireless driver would be:

# sysctl hw.ndis0.EnableAutoConnect=1
# sysctl hw.ndis0.SSID="MY_SSID"
# sysctl hw.ndis0.NetworkType=0 (0 for bss, 1 for adhoc)
# ifconfig ndis0 <my ipaddr> netmask 0xffffff00 up

Things to be done:

- get rid of debug messages
- add in ndis80211 support
- defer transmissions until after a status update with
NDIS_STATUS_CONNECTED occurs
- Create smarter lookaside list support
- Split off if_ndis_pci.c and if_ndis_pccard.c attachments
- Make sure PCMCIA support works
- Fix ndiscvt to properly parse PCMCIA device IDs from INF files
- write ndisapi.9 man page

Revision Changes Path
1.153 +1 -1 src/share/man/man4/man4.i386/Makefile
1.1 +124 -0 src/share/man/man4/man4.i386/ndis.4 (new)
1.1 +46 -0 src/sys/compat/ndis/cfg_var.h (new)
1.1 +40 -0 src/sys/compat/ndis/hal_var.h (new)
1.1 +1049 -0 src/sys/compat/ndis/kern_ndis.c (new)
1.1 +1174 -0 src/sys/compat/ndis/ndis_var.h (new)
1.1 +105 -0 src/sys/compat/ndis/ntoskrnl_var.h (new)
1.1 +330 -0 src/sys/compat/ndis/pe_var.h (new)
1.1 +160 -0 src/sys/compat/ndis/resource_var.h (new)
1.1 +152 -0 src/sys/compat/ndis/subr_hal.c (new)
1.1 +1930 -0 src/sys/compat/ndis/subr_ndis.c (new)
1.1 +497 -0 src/sys/compat/ndis/subr_ntoskrnl.c (new)
1.1 +537 -0 src/sys/compat/ndis/subr_pe.c (new)
1.460 +6 -0 src/sys/conf/files.i386
1.1 +961 -0 src/sys/dev/if_ndis/if_ndis.c (new)
1.1 +121 -0 src/sys/dev/if_ndis/if_ndisvar.h (new)
1.359 +2 -0 src/sys/modules/Makefile
1.1 +9 -0 src/sys/modules/if_ndis/Makefile (new)
1.1 +9 -0 src/sys/modules/ndis/Makefile (new)
1.282 +1 -0 src/usr.sbin/Makefile
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Eric Masson

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