linux/net/dsa/Kconfig
Florian Fainelli 129bd7ca8a net: dsa: Prevent usage of NET_DSA_TAG_8021Q as tagging protocol
It is possible for a switch driver to use NET_DSA_TAG_8021Q as a valid
DSA tagging protocol since it registers itself as such, unfortunately
since there are not xmit or rcv functions provided, the lack of a xmit()
function will lead to a NPD in dsa_slave_xmit() to start with.

net/dsa/tag_8021q.c is only comprised of a set of helper functions at
the moment, but is not a fully autonomous or functional tagging "driver"
(though it could become later on). We do not have any users of
NET_DSA_TAG_8021Q so now is a good time to make sure there are not
issues being encountered by making this file strictly a place holder for
helper functions.

Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-12 19:46:27 -08:00

111 lines
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# SPDX-License-Identifier: GPL-2.0-only
config HAVE_NET_DSA
def_bool y
depends on INET && NETDEVICES && !S390
# Drivers must select NET_DSA and the appropriate tagging format
menuconfig NET_DSA
tristate "Distributed Switch Architecture"
depends on HAVE_NET_DSA
depends on BRIDGE || BRIDGE=n
select NET_SWITCHDEV
select PHYLINK
select NET_DEVLINK
---help---
Say Y if you want to enable support for the hardware switches supported
by the Distributed Switch Architecture.
if NET_DSA
# tagging formats
config NET_DSA_TAG_8021Q
tristate
select VLAN_8021Q
help
Unlike the other tagging protocols, the 802.1Q config option simply
provides helpers for other tagging implementations that might rely on
VLAN in one way or another. It is not a complete solution.
Drivers which use these helpers should select this as dependency.
config NET_DSA_TAG_BRCM_COMMON
tristate
default n
config NET_DSA_TAG_BRCM
tristate "Tag driver for Broadcom switches using in-frame headers"
select NET_DSA_TAG_BRCM_COMMON
help
Say Y if you want to enable support for tagging frames for the
Broadcom switches which place the tag after the MAC source address.
config NET_DSA_TAG_BRCM_PREPEND
tristate "Tag driver for Broadcom switches using prepended headers"
select NET_DSA_TAG_BRCM_COMMON
help
Say Y if you want to enable support for tagging frames for the
Broadcom switches which places the tag before the Ethernet header
(prepended).
config NET_DSA_TAG_GSWIP
tristate "Tag driver for Lantiq / Intel GSWIP switches"
help
Say Y or M if you want to enable support for tagging frames for the
Lantiq / Intel GSWIP switches.
config NET_DSA_TAG_DSA
tristate "Tag driver for Marvell switches using DSA headers"
help
Say Y or M if you want to enable support for tagging frames for the
Marvell switches which use DSA headers.
config NET_DSA_TAG_EDSA
tristate "Tag driver for Marvell switches using EtherType DSA headers"
help
Say Y or M if you want to enable support for tagging frames for the
Marvell switches which use EtherType DSA headers.
config NET_DSA_TAG_MTK
tristate "Tag driver for Mediatek switches"
help
Say Y or M if you want to enable support for tagging frames for
Mediatek switches.
config NET_DSA_TAG_KSZ
tristate "Tag driver for Microchip 8795/9477/9893 families of switches"
help
Say Y if you want to enable support for tagging frames for the
Microchip 8795/9477/9893 families of switches.
config NET_DSA_TAG_QCA
tristate "Tag driver for Qualcomm Atheros QCA8K switches"
help
Say Y or M if you want to enable support for tagging frames for
the Qualcomm Atheros QCA8K switches.
config NET_DSA_TAG_LAN9303
tristate "Tag driver for SMSC/Microchip LAN9303 family of switches"
help
Say Y or M if you want to enable support for tagging frames for the
SMSC/Microchip LAN9303 family of switches.
config NET_DSA_TAG_SJA1105
tristate "Tag driver for NXP SJA1105 switches"
select NET_DSA_TAG_8021Q
select PACKING
help
Say Y or M if you want to enable support for tagging frames with the
NXP SJA1105 switch family. Both the native tagging protocol (which
is only for link-local traffic) as well as non-native tagging (based
on a custom 802.1Q VLAN header) are available.
config NET_DSA_TAG_TRAILER
tristate "Tag driver for switches using a trailer tag"
help
Say Y or M if you want to enable support for tagging frames at
with a trailed. e.g. Marvell 88E6060.
endif