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As explained here: https://lore.kernel.org/netdev/20210908220834.d7gmtnwrorhharna@skbuf/ DSA tagging protocol drivers cannot depend on symbols exported by switch drivers, because this creates a circular dependency that breaks module autoloading. The tag_ocelot.c file depends on the ocelot_ptp_rew_op() function exported by the common ocelot switch lib. This function looks at OCELOT_SKB_CB(skb) and computes how to populate the REW_OP field of the DSA tag, for PTP timestamping (the command: one-step/two-step, and the TX timestamp identifier). None of that requires deep insight into the driver, it is quite stateless, as it only depends upon the skb->cb. So let's make it a static inline function and put it in include/linux/dsa/ocelot.h, a file that despite its name is used by the ocelot switch driver for populating the injection header too - since commit40d3f295b5("net: mscc: ocelot: use common tag parsing code with DSA"). With that function declared as static inline, its body is expanded inside each call site, so the dependency is broken and the DSA tagger can be built without the switch library, upon which the felix driver depends. Fixes:39e5308b32("net: mscc: ocelot: support PTP Sync one-step timestamping") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
158 lines
5.3 KiB
Text
158 lines
5.3 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig NET_DSA
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tristate "Distributed Switch Architecture"
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depends on BRIDGE || BRIDGE=n
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depends on HSR || HSR=n
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depends on INET && NETDEVICES
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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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imply NET_SELFTESTS
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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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# Drivers must select the appropriate tagging format(s)
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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_LEGACY
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tristate "Tag driver for Broadcom legacy 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 legacy switches which place the tag after the MAC source
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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_HELLCREEK
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tristate "Tag driver for Hirschmann Hellcreek TSN switches"
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help
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Say Y or M if you want to enable support for tagging frames
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for the Hirschmann Hellcreek TSN switches.
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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_COMMON
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tristate
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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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select NET_DSA_TAG_DSA_COMMON
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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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select NET_DSA_TAG_DSA_COMMON
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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, using NPI port"
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select PACKING
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help
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Say Y or M if you want to enable NPI tagging for the Ocelot switches
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(VSC7511, VSC7512, VSC7513, VSC7514, VSC9953, VSC9959). In this mode,
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the frames over the Ethernet CPU port are prepended with a
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hardware-defined injection/extraction frame header. Flow control
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(PAUSE frames) over the CPU port is not supported when operating in
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this mode.
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config NET_DSA_TAG_OCELOT_8021Q
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tristate "Tag driver for Ocelot family of switches, using VLAN"
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depends on MSCC_OCELOT_SWITCH_LIB || \
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(MSCC_OCELOT_SWITCH_LIB=n && COMPILE_TEST)
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help
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Say Y or M if you want to enable support for tagging frames with a
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custom VLAN-based header. Frames that require timestamping, such as
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PTP, are not delivered over Ethernet but over register-based MMIO.
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Flow control over the CPU port is functional in this mode. When using
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this mode, less TCAM resources (VCAP IS1, IS2, ES0) are available for
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use with tc-flower.
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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 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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config NET_DSA_TAG_XRS700X
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tristate "Tag driver for XRS700x 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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Arrow SpeedChips XRS700x switches that use a single byte tag trailer.
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endif
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