[RFC PATCH v3 04/12] netdev: support binding dma-buf to netdevice

[Mina Almasry]

On Fri, Nov 10, 2023 at 3:20 PM Jakub Kicinski <kuba at kernel.org> wrote:
>
> On Sun,  5 Nov 2023 18:44:03 -0800 Mina Almasry wrote:
> > --- a/include/linux/netdevice.h
> > +++ b/include/linux/netdevice.h
> > @@ -52,6 +52,8 @@
> >  #include <net/net_trackers.h>
> >  #include <net/net_debug.h>
> >  #include <net/dropreason-core.h>
> > +#include <linux/xarray.h>
> > +#include <linux/refcount.h>
> >
> >  struct netpoll_info;
> >  struct device;
> > @@ -808,6 +810,84 @@ bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id,
> >  #endif
> >  #endif /* CONFIG_RPS */
> >
> > +struct netdev_dmabuf_binding {
>
> Similar nitpick to the skbuff.h comment. Take this somewhere else,
> please, it doesn't need to be included in netdevice.h
>
> > +     struct netdev_dmabuf_binding *rbinding;
>
> the 'r' in rbinding stands for rx? 🤔️
>

reverse binding. As in usually it's netdev->binding, but the reverse
map holds the bindings themselves so we can unbind them from the
netdev.
-- 
Thanks,
Mina