Merge branch 'dpaa2-eth-devlink-port-number-from-the-dpmac'

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Vincent Jardin via says:

====================
dpaa2-eth: devlink port number from the DPMAC

dpaa2-eth registers every DPNI as a physical devlink port without a
port number, so all the DPAA2 interfaces report the same
phys_port_name "p0", including the DPNIs that have no DPMAC behind
them.

Patch 1 uses the DPMAC id as the physical port number. The attributes
of a registered devlink port cannot change, so when the DPNI endpoint
changes at runtime a warning says the number is stale until the DPNI
is rebound.

Patch 2 registers the DPNIs without a DPMAC as virtual ports. They
have no phys_port_name, so "p<dpmac id>" is unique.

With both patches, udev can name an interface using its DPMAC, for
instance:

  SUBSYSTEM=="net", ACTION=="add", DRIVERS=="fsl_dpaa2_eth", \
    ATTR{phys_port_name}=="p3", NAME="dpmac3"
====================

Link: https://patch.msgid.link/20260928-for-upstream-dpaa2_ports-v2-0-1cda148530bf@free.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Jakub Kicinski 2026-10-01 17:08:40 -07:00

parent f49defea76 aed5a323ec

commit 58328b5b58

3 changed files with 48 additions and 2 deletions

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45

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c

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2

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c

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3

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h

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