[PATCH net-next 0/4] Software fallback for bridging in DSA
flat view
STALE2072d
From: Vladimir Oltean <olteanv@gmail.com>
Date: 2021-02-14 15:55:27
Subsystem:
arrow speedchips xrs7000 series ethernet switch driver, broadcom b53/sf2 ethernet switch driver, hirschmann hellcreek ethernet switch driver, mediatek switch driver, microchip ksz series ethernet switch driver, networking [dsa], networking [general], ocelot ethernet switch driver, the rest · Maintainers:
George McCollister, Florian Fainelli, Jonas Gorski, Kurt Kanzenbach, Chester A. Unal, Daniel Golle, Woojung Huh, Andrew Lunn, Vladimir Oltean, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
From: Vladimir Oltean <vladimir.oltean@nxp.com> As was discussed here: https://patchwork.kernel.org/project/netdevbpf/patch/20201202091356.24075-3-tobias@waldekranz.com/ it is desirable to not reject a LAG interface (bonding, team) even if the switch isn't able to offload bridging towards that link aggregation group. At least the DSA setups I have are not that unbalanced between the horsepower of the CPU and the horsepower of the switch such that software forwarding to be completely impractical. This series makes all switch drivers theoretically able to do the right thing when they are configured in a way similar to this (credits to Tobias Waldekranz for the drawing): br0 / \ team0 \ / \ \ swp0 swp1 swp2 although in practice there is one more prerequisite: for software fallback mode, they need to disable address learning. It is preferable that they do this by implementing the .port_pre_bridge_join and .port_bridge_join methods. Vladimir Oltean (4): net: dsa: don't offload switchdev objects on ports that don't offload the bridge net: dsa: reject switchdev objects centrally from dsa_slave_port_obj_{add,del} net: dsa: return -EOPNOTSUPP if .port_lag_join is not implemented net: dsa: don't set skb->offload_fwd_mark when not offloading the bridge net/dsa/dsa_priv.h | 16 ++++++++++++++++ net/dsa/slave.c | 21 +++++++++++---------- net/dsa/switch.c | 13 ++++++++++--- net/dsa/tag_brcm.c | 2 +- net/dsa/tag_dsa.c | 9 +++++---- net/dsa/tag_hellcreek.c | 2 +- net/dsa/tag_ksz.c | 2 +- net/dsa/tag_lan9303.c | 4 +++- net/dsa/tag_mtk.c | 2 +- net/dsa/tag_ocelot.c | 2 +- net/dsa/tag_ocelot_8021q.c | 2 +- net/dsa/tag_rtl4_a.c | 2 +- net/dsa/tag_sja1105.c | 4 ++-- net/dsa/tag_xrs700x.c | 3 +-- 14 files changed, 55 insertions(+), 29 deletions(-) -- 2.25.1