Date: Thu, 27 Nov 2025 19:13:23 +0100 From: Florian Smeets <flo@FreeBSD.org> To: Adrian Chadd <adrian@freebsd.org>, FreeBSD Net <freebsd-net@freebsd.org>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: looking for testers for if_rge - RTL8125/8126/8127 ethernet driver Message-ID: <cfd43166-a287-4ea0-97f5-dbbf08856bdc@FreeBSD.org> In-Reply-To: <CAJ-VmonP4%2BQmpSUfM6Xatta83e6zkjMShzL7ob1nJVOH=Tjwhg@mail.gmail.com> References: <CAJ-VmonP4%2BQmpSUfM6Xatta83e6zkjMShzL7ob1nJVOH=Tjwhg@mail.gmail.com>
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On 23.11.25 03:16, Adrian Chadd wrote:
> hi!
>
> i've ported Kevin Lo's openbsd driver for these realtek chipsets to FreeBSD.
> It works well enough for me to use on my laptop w/ RTL8125B / Killer E3000.
> I'm now opening it up to others who are willing to build/run a kernel
> module to test the driver out and report back.
>
This is great. Finally, an in tree driver for these very common NICs.
The 1100.00 version of the net/realtek-re-kmod was just unreliable for
me (constant hangs, no matter which options I turned off and on). I've
only done light testing with the official 1101.00 driver. I was able to
wedge it with less than a minute of iperf3, and the ifconfig down/up
dance that was able to revive the interface with 1100.00 was not able to
recover the interface.
I ran if_rge on my NAS and did some testing. I haven't had one hang with
this driver, even after pounding the network for hours. That's a big
plus for me. Thanks.
I was able to achieve close to 2.5Gb/s TX and close to 1Gb/s RX with
iperf3 --bidir.
CPU usage appears to be substantially higher than with the official
Realtek driver.
[intr{irq59: rge0}] goes to around 50% of one core, and [kernel{rge0
taskq thread}] hovers between 20-25% when running the above iperf3 tests.
With the official 1101.00 driver, the only process using > 1% CPU is
this one [kernel{re0 taskq}] and it is around 10% with the test
mentioned above.
The system is
CPU: AMD Ryzen 9 7940HS w/ Radeon 780M Graphics (3992.64-MHz
K8-class CPU)
rge0@pci0:1:0:0: class=0x020000 rev=0x05 hdr=0x00 vendor=0x10ec
device=0x8125 subvendor=0x1f4c subdevice=0xb002
vendor = 'Realtek Semiconductor Co., Ltd.'
device = 'RTL8125 2.5GbE Controller'
class = network
subclass = ethernet
bar [10] = type I/O Port, range 32, base 0xf000, size 256, enabled
bar [18] = type Memory, range 64, base 0xdcb00000, size 65536,
enabled
bar [20] = type Memory, range 64, base 0xdcb10000, size 16384,
enabled
All tests were done with FreeBSD-kernel-generic-nodebug-16 kernels from
the last couple of days.
Florian
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