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MD Danish Anwar says: ==================== Introduce switch mode support for ICSSG driver This series adds support for switch-mode for ICSSG driver. This series also introduces helper APIs to configure firmware maintained FDB (Forwarding Database) and VLAN tables. These APIs are later used by ICSSG driver in switch mode. Now the driver will boot by default in dual EMAC mode. When first ICSSG interface is added to bridge driver will still be in EMAC mode. As soon as second ICSSG interface is added to same bridge, switch-mode will be enabled and switch firmwares will be loaded to PRU cores. The driver will remain in dual EMAC mode if ICSSG interfaces are added to two different bridges or if two different interfaces (One ICSSG, one other) is added to the same bridge. We'll only enable is_switch_mode flag when two ICSSG interfaces are added to same bridge. We start in dual MAC mode. Let's say lan0 and lan1 are ICSSG interfaces ip link add name br0 type bridge ip link set lan0 master br0 At this point, we get a CHANGEUPPER event. Only one port is a member of the bridge, so we will still be in dual MAC mode. ip link set lan1 master br0 We get a second CHANGEUPPER event, the second interface lan1 is also ICSSG interface so we will set the is_switch_mode flag and when interfaces are brought up again, ICSSG switch firmwares will be loaded to PRU Cores. There are some other cases to consider as well. ip link add name br0 type bridge ip link add name br1 type bridge ip link set lan0 master br0 ip link set ppp0 master br0 Here we are adding lan0 (ICSSG) and ppp0 (non ICSSG) to same bridge, as they both are not ICSSG, we will still be running in dual EMAC mode. ip link set lan1 master br1 ip link set vpn0 master br1 Here we are adding lan1 (ICSSG) and vpn0 (non ICSSG) to same bridge, as they both are not ICSSG, we will still be running in dual EMAC mode. This is v6 of the series. Changes from v5 to v6: *) Removed __packed from structures in icssg_config.h file. *) Added RB tags of Andrew Lunn <andrew@lunn.ch> to patch 2/3 and patch 3/3 of this series. Changes from v4 to v5: *) Rebased on 6.10-rc1. *) Dropped the RFC tag. Changes from v3 to v4: *) Added RFC tag as net-next is closed now. *) Modified the driver to remove the need of bringing interfaces up / down for enabling / disabling switch mode. Now switch mode can be enabled without bringig interfaces up / down as requested by Andrew Lunn <andrew@lunn.ch> *) Modified commit message of patch 3/3. Changes from v2 to v3: *) Dropped RFC tag. *) Used ether_addr_copy() instead of manually copying mac address using for loop in patch 1/3 as suggested by Andrew Lunn <andrew@lunn.ch> *) Added helper API icssg_fdb_setup() in patch 1/3 to reduce code duplication as suggested by Andrew Lunn <andrew@lunn.ch> *) In prueth_switchdev_stp_state_set() removed BR_STATE_LEARNING as learning without forwarding is not supported by ICSSG firmware. *) Used ether_addr_equal() wherever possible in patch 2/3 as suggested by Andrew Lunn <andrew@lunn.ch> *) Fixed typo "nit: s/prueth_switchdevice_nb/prueth_switchdev_nb/" in patch 2/3 as suggested by Simon Horman <horms@kernel.org> *) Squashed "#include "icssg_mii_rt.h" to patch 2/3 from patch 3/3 as suggested by Simon Horman <horms@kernel.org> *) Rebased on latest net-next/main. Changes from v1 to v2: *) Removed TAPRIO support patch from this series. *) Stopped using devlink for enabling switch-mode as suggested by Andrew L *) Added read_poll_timeout() in patch 1 / 3 as suggested by Andrew L. v1 https://lore.kernel.org/all/20230830110847.1219515-4-danishanwar@ti.com/ v2 https://lore.kernel.org/all/20240118071005.1514498-1-danishanwar@ti.com/ v3 https://lore.kernel.org/all/20240327114054.1907278-1-danishanwar@ti.com/ v4 https://lore.kernel.org/all/20240515060320.2783244-1-danishanwar@ti.com/ v5 https://lore.kernel.org/all/20240527052738.152821-1-danishanwar@ti.com/ Thanks and Regards, Md Danish Anwar ==================== Link: https://lore.kernel.org/r/20240528113734.379422-1-danishanwar@ti.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.