This patchset extends devlink regions to support per port regions, and them makes use of them to support the ports of the mv88e6xxx switches.
root@rap:~# devlink region show mdio_bus/gpio-0:00/global1: size 64 snapshot [] mdio_bus/gpio-0:00/global2: size 64 snapshot [] mdio_bus/gpio-0:00/atu: size 49152 snapshot [] mdio_bus/gpio-0:00/1/port: size 64 snapshot [] mdio_bus/gpio-0:00/2/port: size 64 snapshot [] mdio_bus/gpio-0:00/3/port: size 64 snapshot [] mdio_bus/gpio-0:00/4/port: size 64 snapshot [] mdio_bus/gpio-0:00/8/port: size 64 snapshot [] root@rap:~# devlink region new mdio_bus/gpio-0:00/1/port snapshot 42 root@rap:~# devlink region dump mdio_bus/gpio-0:00/1/port snapshot 42 0000000000000000 4f 1e 3e 20 00 01 01 39 3f 05 00 00 fd 07 00 00 0000000000000010 80 00 01 00 00 00 00 00 00 00 00 00 00 00 00 91 0000000000000020 00 00 00 00 00 00 00 00 00 00 00 00 22 00 00 00 0000000000000030 07 3e 00 00 00 00 00 80 00 00 00 00 00 00 5b 00 DSA only instantiates devlink ports for switch ports which are used. For this hardware, only 4 user ports and the CPU port have devlink ports, which explains the discontinuous port regions. Andrew Lunn (4): net: devlink: Add support for port regions net: dsa: Add devlink port regions support to DSA net: dsa: Add helper for converting devlink port to ds and port net: dsa: mv88e6xxx: Add per port devlink regions drivers/net/dsa/mv88e6xxx/chip.c | 8 + drivers/net/dsa/mv88e6xxx/devlink.c | 61 +++++++ drivers/net/dsa/mv88e6xxx/devlink.h | 6 +- include/net/devlink.h | 27 +++ include/net/dsa.h | 19 +++ net/core/devlink.c | 250 +++++++++++++++++++++++++--- net/dsa/dsa.c | 14 ++ 7 files changed, 358 insertions(+), 27 deletions(-) -- 2.28.0
