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There are use cases for which the existing tagger, based on the NPI (Node Processor Interface) functionality, is insufficient. Namely: - Frames injected through the NPI port bypass the frame analyzer, so no source address learning is performed, no TSN stream classification, etc. - Flow control is not functional over an NPI port (PAUSE frames are encapsulated in the same Extraction Frame Header as all other frames) - There can be at most one NPI port configured for an Ocelot switch. But in NXP LS1028A and T1040 there are two Ethernet CPU ports. The non-NPI port is currently either disabled, or operated as a plain user port (albeit an internally-facing one). Having the ability to configure the two CPU ports symmetrically could pave the way for e.g. creating a LAG between them, to increase bandwidth seamlessly for the system. So there is a desire to have an alternative to the NPI mode. This change keeps the default tagger for the Seville and Felix switches as "ocelot", but it can be changed via the following device attribute: echo ocelot-8021q > /sys/class/<dsa-master>/dsa/tagging 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>
29 lines
882 B
Plaintext
29 lines
882 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config NET_DSA_MSCC_FELIX
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tristate "Ocelot / Felix Ethernet switch support"
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depends on NET_DSA && PCI
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depends on NET_VENDOR_MICROSEMI
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depends on NET_VENDOR_FREESCALE
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depends on HAS_IOMEM
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select MSCC_OCELOT_SWITCH_LIB
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select NET_DSA_TAG_OCELOT_8021Q
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select NET_DSA_TAG_OCELOT
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select FSL_ENETC_MDIO
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select PCS_LYNX
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help
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This driver supports the VSC9959 (Felix) switch, which is embedded as
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a PCIe function of the NXP LS1028A ENETC RCiEP.
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config NET_DSA_MSCC_SEVILLE
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tristate "Ocelot / Seville Ethernet switch support"
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depends on NET_DSA
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depends on NET_VENDOR_MICROSEMI
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depends on HAS_IOMEM
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select MSCC_OCELOT_SWITCH_LIB
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select NET_DSA_TAG_OCELOT_8021Q
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select NET_DSA_TAG_OCELOT
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select PCS_LYNX
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help
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This driver supports the VSC9953 (Seville) switch, which is embedded
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as a platform device on the NXP T1040 SoC.
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