Re: [PATCH net-next v2 2/2] devmap: Allow map lookups from eBPF

2019-06-06 Thread Toke Høiland-Jørgensen
Jesper Dangaard Brouer writes: > On Thu, 06 Jun 2019 15:24:14 +0200 > Toke Høiland-Jørgensen wrote: > >> From: Toke Høiland-Jørgensen >> >> We don't currently allow lookups into a devmap from eBPF, because the map >> lookup returns a pointer directly to the dev->ifindex, which shouldn't be >>

Re: [PATCH net-next v2 2/2] devmap: Allow map lookups from eBPF

2019-06-06 Thread Jesper Dangaard Brouer
On Thu, 06 Jun 2019 15:24:14 +0200 Toke Høiland-Jørgensen wrote: > From: Toke Høiland-Jørgensen > > We don't currently allow lookups into a devmap from eBPF, because the map > lookup returns a pointer directly to the dev->ifindex, which shouldn't be > modifiable from eBPF. > > However, being a

[PATCH net-next v2 2/2] devmap: Allow map lookups from eBPF

2019-06-06 Thread Toke Høiland-Jørgensen
From: Toke Høiland-Jørgensen We don't currently allow lookups into a devmap from eBPF, because the map lookup returns a pointer directly to the dev->ifindex, which shouldn't be modifiable from eBPF. However, being able to do lookups in devmaps is useful to know (e.g.) whether forwarding to a spe