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Date: Wed, 12 Apr 2017 21:55:12 -0400 (EDT) From: David Miller <davem@...emloft.net> To: eric.dumazet@...il.com Cc: stephen@...workplumber.org, netdev@...r.kernel.org, xdp-newbies@...r.kernel.org Subject: Re: [PATCH v3 net-next RFC] Generic XDP From: Eric Dumazet <eric.dumazet@...il.com> Date: Wed, 12 Apr 2017 14:49:53 -0700 > On Wed, 2017-04-12 at 14:30 -0700, Stephen Hemminger wrote: >> On Wed, 12 Apr 2017 14:54:15 -0400 (EDT) >> David Miller <davem@...emloft.net> wrote: >> >> > diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h >> > index b0aa089..071a58b 100644 >> > --- a/include/linux/netdevice.h >> > +++ b/include/linux/netdevice.h >> > @@ -1891,9 +1891,17 @@ struct net_device { >> > struct lock_class_key *qdisc_tx_busylock; >> > struct lock_class_key *qdisc_running_key; >> > bool proto_down; >> > + struct bpf_prog __rcu *xdp_prog; >> >> It would be good if all devices could reuse this for the xdp_prog pointer. >> It would allow for could be used for introspection utility functions in future. > > Problem is that some xdp usages were envisioning a per RX queue xdp > program. True, but that hasn't materialized yet so designing for it so soon doesn't make a lot of sense.
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