From: David S. Miller Date: Mon, 14 Mar 2022 10:36:15 +0000 (+0000) Subject: Merge branch 'dsa-felix-qos' X-Git-Tag: microblaze-v5.19~142^2~93 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=92ebb2361e1b32d4b5975f017289473ed84ab86d;p=linux-2.6-microblaze.git Merge branch 'dsa-felix-qos' Vladimir Oltean says: ==================== Basic QoS classification on Felix DSA switch using dcbnl Basic QoS classification for Ocelot switches means port-based default priority, DSCP-based and VLAN PCP based. This is opposed to advanced QoS classification which is done through the VCAP IS1 TCAM based engine. The patch set is a logical continuation of this RFC which attempted to describe the default-prio as a matchall entry placed at the end of a series of offloaded tc filters: https://patchwork.kernel.org/project/netdevbpf/cover/20210113154139.1803705-1-olteanv@gmail.com/ I have tried my best to satisfy the feedback that we should cater for pre-configured QoS profiles. Ironically, the only pre-configured QoS profile that the Felix switch driver has is for VLAN PCP (1:1 mapping with QoS class), yet IEEE 802.1Q or dcbnl offer no mechanism for reporting or changing that. Testing was done with the iproute2 dcb app. The qos_class of packets was dumped from net/dsa/tag_ocelot.c. (1) $ dcb app show dev swp3 default-prio 0 (2) $ dcb app replace dev swp3 default-prio 3 (3) $ dcb app replace dev swp3 dscp-prio CS3:5 (4) $ dcb app replace dev swp3 dscp-prio CS2:2 (5) $ dcb app show dev swp3 default-prio 3 dscp-prio CS2:2 CS3:5 Traffic sent with "ping -Q 64 ", which means CS2. These packets match qos_class 0 after command (1), qos_class 3 after command (2), qos_class 3 after command (3), and qos_class 2 after command (2). ==================== Signed-off-by: David S. Miller --- 92ebb2361e1b32d4b5975f017289473ed84ab86d