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This implements the known parts of the Realtek 4 byte tag protocol version 0xA, as found in the RTL8366RB DSA switch. It is designated as protocol version 0xA as a different Realtek 4 byte tag format with protocol version 0x9 is known to exist in the Realtek RTL8306 chips. The tag and switch chip lacks public documentation, so the tag format has been reverse-engineered from packet dumps. As only ingress traffic has been available for analysis an egress tag has not been possible to develop (even using educated guesses about bit fields) so this is as far as it gets. It is not known if the switch even supports egress tagging. Excessive attempts to figure out the egress tag format was made. When nothing else worked, I just tried all bit combinations with 0xannp where a is protocol and p is port. I looped through all values several times trying to get a response from ping, without any positive result. Using just these ingress tags however, the switch functionality is vastly improved and the packets find their way into the destination port without any tricky VLAN configuration. On the D-Link DIR-685 the LAN ports now come up and respond to ping without any command line configuration so this is a real improvement for users. Egress packets need to be restricted to the proper target ports using VLAN, which the RTL8366RB DSA switch driver already sets up. Cc: DENG Qingfang <dqfext@gmail.com> Cc: Mauri Sandberg <sandberg@mailfence.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
131 lines
4.1 KiB
Text
131 lines
4.1 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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config HAVE_NET_DSA
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def_bool y
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depends on INET && NETDEVICES && !S390
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# Drivers must select NET_DSA and the appropriate tagging format
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menuconfig NET_DSA
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tristate "Distributed Switch Architecture"
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depends on HAVE_NET_DSA
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depends on BRIDGE || BRIDGE=n
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select GRO_CELLS
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select NET_SWITCHDEV
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select PHYLINK
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select NET_DEVLINK
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help
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Say Y if you want to enable support for the hardware switches supported
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by the Distributed Switch Architecture.
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if NET_DSA
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# tagging formats
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config NET_DSA_TAG_8021Q
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tristate
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select VLAN_8021Q
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help
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Unlike the other tagging protocols, the 802.1Q config option simply
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provides helpers for other tagging implementations that might rely on
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VLAN in one way or another. It is not a complete solution.
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Drivers which use these helpers should select this as dependency.
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config NET_DSA_TAG_AR9331
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tristate "Tag driver for Atheros AR9331 SoC with built-in switch"
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help
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Say Y or M if you want to enable support for tagging frames for
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the Atheros AR9331 SoC with built-in switch.
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config NET_DSA_TAG_BRCM_COMMON
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tristate
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default n
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config NET_DSA_TAG_BRCM
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tristate "Tag driver for Broadcom switches using in-frame headers"
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select NET_DSA_TAG_BRCM_COMMON
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help
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Say Y if you want to enable support for tagging frames for the
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Broadcom switches which place the tag after the MAC source address.
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config NET_DSA_TAG_BRCM_PREPEND
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tristate "Tag driver for Broadcom switches using prepended headers"
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select NET_DSA_TAG_BRCM_COMMON
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help
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Say Y if you want to enable support for tagging frames for the
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Broadcom switches which places the tag before the Ethernet header
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(prepended).
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config NET_DSA_TAG_GSWIP
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tristate "Tag driver for Lantiq / Intel GSWIP switches"
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help
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Say Y or M if you want to enable support for tagging frames for the
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Lantiq / Intel GSWIP switches.
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config NET_DSA_TAG_DSA
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tristate "Tag driver for Marvell switches using DSA headers"
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help
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Say Y or M if you want to enable support for tagging frames for the
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Marvell switches which use DSA headers.
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config NET_DSA_TAG_EDSA
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tristate "Tag driver for Marvell switches using EtherType DSA headers"
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help
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Say Y or M if you want to enable support for tagging frames for the
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Marvell switches which use EtherType DSA headers.
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config NET_DSA_TAG_MTK
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tristate "Tag driver for Mediatek switches"
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help
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Say Y or M if you want to enable support for tagging frames for
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Mediatek switches.
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config NET_DSA_TAG_KSZ
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tristate "Tag driver for Microchip 8795/9477/9893 families of switches"
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help
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Say Y if you want to enable support for tagging frames for the
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Microchip 8795/9477/9893 families of switches.
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config NET_DSA_TAG_RTL4_A
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tristate "Tag driver for Realtek 4 byte protocol A tags"
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help
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Say Y or M if you want to enable support for tagging frames for the
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Realtek switches with 4 byte protocol A tags, sich as found in
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the Realtek RTL8366RB.
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config NET_DSA_TAG_OCELOT
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tristate "Tag driver for Ocelot family of switches"
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select PACKING
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help
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Say Y or M if you want to enable support for tagging frames for the
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Ocelot switches (VSC7511, VSC7512, VSC7513, VSC7514, VSC9959).
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config NET_DSA_TAG_QCA
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tristate "Tag driver for Qualcomm Atheros QCA8K switches"
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help
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Say Y or M if you want to enable support for tagging frames for
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the Qualcomm Atheros QCA8K switches.
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config NET_DSA_TAG_LAN9303
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tristate "Tag driver for SMSC/Microchip LAN9303 family of switches"
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help
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Say Y or M if you want to enable support for tagging frames for the
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SMSC/Microchip LAN9303 family of switches.
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config NET_DSA_TAG_SJA1105
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tristate "Tag driver for NXP SJA1105 switches"
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select NET_DSA_TAG_8021Q
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select PACKING
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help
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Say Y or M if you want to enable support for tagging frames with the
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NXP SJA1105 switch family. Both the native tagging protocol (which
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is only for link-local traffic) as well as non-native tagging (based
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on a custom 802.1Q VLAN header) are available.
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config NET_DSA_TAG_TRAILER
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tristate "Tag driver for switches using a trailer tag"
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help
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Say Y or M if you want to enable support for tagging frames at
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with a trailed. e.g. Marvell 88E6060.
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endif
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