Re: [dpdk-dev] [PATCH] eal/headers: explicitly cast void * to type *

[Thomas Monjalon <thomas@monjalon.net>]

14/01/2021 19:27, Dmitry Kozlyuk:
> > > If it's a public header then maybe it's missing a @file?
> > >  
> > My 2c on this in general...
> >  
> > The use of public vs private headers is not always clear, sadly, in DPDK,
> > for historical reasons.  With the make builds, libraries picked up headers
> > from other libraries via the "include" folder for all of DPDK, meaning that
> > if a particular header was internal only but used by multiple other libs,
> > it was placed in "include" for simplicity, rather than having each library
> > using it having to have separate "-I/path/to/header" cflags specified.
> > With the switch to meson, this common folder use is no longer be the case,
> > but because of the old way of doing things it may be that in the transition
> > some private headers were inadvertently kept as public (and possibly vice
> > versa, though that is more likely to be spotted by now).
> > 
> > /Bruce
> 
> Here is why rte_ethdev_pci.h should be considered private to DPDK:
> 
> * rte_eth_copy_pci_info - intended for device init, that is, driver job
> * eth_dev_pci_specific_init - wrapper for the above
> * rte_eth_dev_pci_allocate - @internal, deals with private data
> * rte_eth_dev_pci_generic_probe - @internal, deals with private data
> * rte_eth_dev_pci_generic_remove - @internal

Yes rte_ethdev_pci.h is a helper for ethdev drivers,
it is DPDK internal.