[Openvpn-users] Solution [Again] tun/tap on Solaris 10 using Sun Studio or GNU C in 32 and 64 bit environments.

[Rodger L. <rl...@ta...>]

HI All:
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I was experiencing this problem that others have reported in other
flavours of Solaris through the years. It all comes down to how the
driver is compiled on Solaris.
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# /usr/sbin/add_drv -v tun
exit status =3D 0
devfsadm: driver failed to attach: tun
exit status =3D 1
Warning: Driver (tun) successfully added to system but failed to attach
Driver (tun) installed.

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Kudos to Avnish Pundir who posted (2006-09-19) his solution to a
specific problem that he was having.
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The details for doing this correctly using Sun Studio and GNU C 32 or 64
bit environments are nicely summarized on the Sun web site at:
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http://docs.sun.com/app/docs/doc/819-3159/6n5d9rbv8?a=3Dview#fgouv
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But to summarize the compiling and copying to the correct location ....
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# Sun Studio targetting 64 bit SPARC
% cc -D_KERNEL -xarch=3Dv9 -c tun.c

# Sun Studio targetting 64 bit x86
%cc -D_KERNEL -xarch=3Damd64 -xmodel=3Dkernel -c tun.c

# Sun Studio targetting 32 bit=20
% cc -D_KERNEL -c tun.c

# GNU C Compiler targetting 64 bit SPACE ( optional: mtune=3Dultrasparc
-O2 )
% gcc -D_KERNEL -m64 -mcpu=3Dv9 -mcmodel=3Dmedlow -fno-pic -mno-fpu
-ffreestanding -nodefaultlibs -c tun.c
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# GNU C Compiler targetting 64 bit x86 ( optional: mtune=3Dopteron -O2 )
% gcc -D_KERNEL -m64 -mcmodel=3Dkernel -mno-red-zone -ffreestanding
-nodefaultlibs -c tun.c
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# GNU C Compiler targetting 32 bit
% gcc -D_KERNEL -ffreestanding -nodefaultlibs -c tun.c

The linking is the same for all
% usr/ccs/bin/ld -r -o tun tun.o
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The destination is different for depending on the architecture:
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# 64 bit sparc
cp tun /usr/kernel/drv/sparcv9/tun

# 64 bit x86
cp tun /usr/kernel/drv/amd64/tun

# 32 bit
cp tun /usr/kernel/drv/tun

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Regards,
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Rodger Lucas

TAZZ Networks

Glasgow

Scotland, United Kingdom

( Voice: +44 (0)141 222 2126
+ Email: rl...@ta... <mailto:rl...@ta...>=20

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