libosmo-netif interface

Hi. While looking at osmocom/netif/datagram.h I've noticed that it's organized differently compared to other libosmo*. Most notably, it does not have structure definitions, only brief declarations in datagram.h while the actual definition is in datagram.c This effectively means that client code using the library do not have access to struct internals and have to use various "osmo_dgram_.x_set_*()" functions to manipulate them. This got me curious - what are the pros and cons of this approach? I can see the benefit of being able to change struct internals without changing the API. I can also see the downside in having to define lot's of boilerplate setter/getter functions. What else? Are there other nice things about this approach? Is there a way to avoid or at least simplify setter/getter boilerplate? Are there some other downsides to this? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte