Messages in this thread |  | | Date | Wed, 6 May 2026 23:02:52 +0200 | | Subject | Re: [Patch net-next v1 0/7] r8169: add RSS support for RTL8127 | | From | Heiner Kallweit <> |
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On 06.05.2026 10:13, javen wrote: > From: Javen Xu <javen_xu@realsil.com.cn> > > This patch series adds RSS (Receive Side Scaling) support for the r8169 > ethernet driver, specifically for RTL8127 (RTL_GIGA_MAC_VER_80).
Series adds RSS support for RTL8127 only. Is this generic enough to retrofit RSS support for other chip versions like RTL8126 w/o bigger refactoring?
> > RSS enables packet distribution across multiple receive queues, which can > significantly improve network throughput on multi-core systems by allowing > parallel processing of incoming packets. > > Key features: > - Multi-queue RX support (up to 8 queues) > - MSI-X interrupt with vector mapping > - Dynamic queue configuration via ethtool (-L) > - RSS hash computation for flow classification > > Experiments: > Platform: AMD Ryzen Embedded R2514 with Radeon Graphics(4 Cores/8 Threads) > Arch: x86_64 > Test command: > Server: iperf3 -s > Client: iperf3 -c 192.168.2.1 -P 20 -t 3600 > Monitor: mpstat -P ALL 1 > > Before this patch (Without RSS): > Throughput: Unstable, fluctuating between 3.76 Gbits/sec and > 8.2 Gbits/sec. > CPU Usage: A single CPU core is fully occupied with softirq reaching > up to 96%. > > After this patch (With RSS enabled): > Throughput: Stable at 9.42 Gbits/sec. > CPU Usage: The traffic load is evenly distributed across multiple CPU > cores. The maximum softirq on a single core dropped to 63%. > > Other Experiments: > Link: https://lore.kernel.org/netdev/0A5279953D81BB9C+f50c9b49-3e5d-467f-b69a-7e49ed223383@radxa.com/ > > Javen Xu (7): > r8169: add support for multi irqs > r8169: add support for multi rx queues > r8169: add support for new interrupt mapping > r8169: enable new interrupt mapping > r8169: add support and enable rss > r8169: move struct ethtool_ops > r8169: add support for ethtool > > drivers/net/ethernet/realtek/r8169_main.c | 1202 ++++++++++++++++++--- > 1 file changed, 1080 insertions(+), 122 deletions(-) >
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