Re: [PATCH net-next 0/6] net: bcmgenet: add XDP support

[Florian Fainelli]

On 3/13/26 16:01, Florian Fainelli wrote:
> On 3/13/26 02:20, Nicolai Buchwitz wrote:
> > Add XDP support to the bcmgenet driver, covering XDP_PASS, XDP_DROP,
> > XDP_TX, XDP_REDIRECT, and ndo_xdp_xmit.
> >
> > The first patch converts the RX path from the existing kmalloc-based
> > allocation to page_pool, which is a prerequisite for XDP. The remaining
> > patches incrementally add XDP functionality and per-action statistics.
> >
> > Tested on Raspberry Pi CM4 (BCM2711, bcmgenet, 1Gbps link):
> > - XDP_PASS: 943 Mbit/s TX, 935 Mbit/s RX (no regression vs baseline)
> > - XDP_PASS latency: 0.164ms avg, 0% packet loss
> > - XDP_DROP: all inbound traffic blocked as expected
> > - XDP_TX: TX counter increments (packet reflection working)
> > - Link flap with XDP attached: no errors
> > - Program swap under iperf3 load: no errors
>
> This is very nice, thanks for doing that work! If the network is brought 
> up and there is a background iperf3 client transmitting data, and then 
> you issue "reboot -f", you will see the following NPD:

Sorry to flood you with more messages, after a little while I see those 
showing up on the console, is that intended?

# [ 4322.017024] page_pool_release_retry() stalled pool shutdown: id 5, 
256 inflight 4289 sec
[ 4331.297004] page_pool_release_retry() stalled pool shutdown: id 6, 
256 inflight 60 sec
--
Florian