to_c4iw_ucontext
struct c4iw_ucontext *context = to_c4iw_ucontext(ucontext);
ucontext = to_c4iw_ucontext(context);
struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context);
ucontext = pd->uobject ? to_c4iw_ucontext(pd->uobject->context) : NULL;