linux_dsm_epyc7002/net/dsa
Russell King 54a0ed0df4 net: dsa: provide an option for drivers to always receive bridge VLANs
DSA assumes that a bridge which has vlan filtering disabled is not
vlan aware, and ignores all vlan configuration. However, the kernel
software bridge code allows configuration in this state.

This causes the kernel's idea of the bridge vlan state and the
hardware state to disagree, so "bridge vlan show" indicates a correct
configuration but the hardware lacks all configuration. Even worse,
enabling vlan filtering on a DSA bridge immediately blocks all traffic
which, given the output of "bridge vlan show", is very confusing.

Provide an option that drivers can set to indicate they want to receive
vlan configuration even when vlan filtering is disabled. At the very
least, this is safe for Marvell DSA bridges, which do not look up
ingress traffic in the VTU if the port is in 8021Q disabled state. It is
also safe for the Ocelot switch family. Whether this change is suitable
for all DSA bridges is not known.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-12 13:08:07 -07:00
..
dsa2.c net: dsa: introduce a dsa_switch_find function 2020-05-10 19:52:33 -07:00
dsa_priv.h net: dsa: provide an option for drivers to always receive bridge VLANs 2020-05-12 13:08:07 -07:00
dsa.c net: dsa: introduce a dsa_port_from_netdev public helper 2020-05-07 17:31:57 -07:00
Kconfig net: dsa: add GRO support via gro_cells 2020-04-23 12:32:13 -07:00
Makefile net: dsa: add support for Atheros AR9331 TAG format 2019-12-20 17:05:47 -08:00
master.c net: dsa: Do not leave DSA master with NULL netdev_ops 2020-05-06 17:31:54 -07:00
port.c net: dsa: provide an option for drivers to always receive bridge VLANs 2020-05-12 13:08:07 -07:00
slave.c net: dsa: provide an option for drivers to always receive bridge VLANs 2020-05-12 13:08:07 -07:00
switch.c net: dsa: permit cross-chip bridging between all trees in the system 2020-05-10 19:52:33 -07:00
tag_8021q.c net: dsa: sja1105: implement cross-chip bridging operations 2020-05-10 19:52:33 -07:00
tag_ar9331.c net: dsa: tag_ar9331: Make sure there is headroom for tag 2020-02-14 07:34:51 -08:00
tag_brcm.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
tag_dsa.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_edsa.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_gswip.c net: dsa: tag_gswip: fix typo in tagger name 2020-01-16 13:58:26 +01:00
tag_ksz.c net: dsa: ksz: use common define for tag len 2019-12-20 21:06:49 -08:00
tag_lan9303.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_mtk.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_ocelot.c net: dsa: ocelot: Constify dsa_device_ops 2020-05-11 16:50:45 -07:00
tag_qca.c net: dsa: tag_qca: Make sure there is headroom for tag 2020-02-14 07:34:51 -08:00
tag_sja1105.c net: dsa: tag_sja1105: Constify dsa_device_ops 2020-05-11 16:50:45 -07:00
tag_trailer.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00