[PATCH V2 11/11] library: Add setup_tun() callback

[Woodhouse, David]

On Mon, 2016-02-08 at 22:34 -0800, Kevin Cernekee wrote:
> 
>   openconnect_obtain_cookie()
>   openconnect_make_cstp_connection()
>   openconnect_setup_dtls()
>   openconnect_get_ip_info()
>   # ask the OS to create the tun interface
>   openconnect_setup_tun_fd()
>   openconnect_mainloop()
> 
> But now that MTU is calculated a few seconds after the mainloop starts
> up, it is necessary to provide a callback so that the calling application
> can create a tun interface with the correct MTU.

What happens if apps *don't* update, and the library is just updated
(with no soname bump) without the application being changed.

Does the dynamic MTU detection still happen, but achieve nothing and
basically leave things as they were in OpenConnect 7.05?

If so, that fact needs noting in the commit message.

If not, we need an soname bump. Or to make it compatible by explicitly
checking for a setup_tun callback being set, and changing the library
behaviour accordingly.


-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse at intel.com                              Intel Corporation

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