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SubjectRe: Query about Tun/Tap Modules
Date
From
shiva@sasken.com said:
> Q1 : Now I am not able to understand how to use this module for my
> above stated purpose.
> If anybody has used this utility(Tun/tap) before , please let me
> know how to get these ethernet packet going towards IP layer and IP
> packets going towards ethernet driver.

It's not clear how similar my use of TUN/TAP is to what you want, but UML uses
TUN/TAP as one mechanism to network a virtual machine to the host, and it
works quite well.

See tuntap_up() in
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/user-mode-linux/tools/uml_net/uml_net.c?rev=1.10&content-type=text/vnd.viewcvs-markup
for setting up a TUN/TAP interface and
tuntap_user_read() and tuntap_user_write() (which are both trivial)
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/user-mode-linux/linux/arch/um/drivers/tuntap_user.c?rev=1.2&content-type=text/vnd.viewcvs-markup
for getting packets in and out of the interface.

Jeff

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