From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Pirko Subject: [patch net-next 0/9] Introduce devlink interface and first drivers to use it Date: Mon, 22 Feb 2016 19:31:55 +0100 Message-ID: <1456165924-14399-1-git-send-email-jiri@resnulli.us> Cc: davem@davemloft.net, idosch@mellanox.com, eladr@mellanox.com, yotamg@mellanox.com, ogerlitz@mellanox.com, yishaih@mellanox.com, dledford@redhat.com, sean.hefty@intel.com, hal.rosenstock@gmail.com, eugenia@mellanox.com, roopa@cumulusnetworks.com, nikolay@cumulusnetworks.com, hadarh@mellanox.com, jhs@mojatatu.com, john.fastabend@gmail.com, jeffrey.t.kirsher@intel.com, brouer@redhat.com, ivecera@redhat.com, rami.rosen@intel.com To: netdev@vger.kernel.org Return-path: Received: from mail-wm0-f47.google.com ([74.125.82.47]:36199 "EHLO mail-wm0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751389AbcBVScI (ORCPT ); Mon, 22 Feb 2016 13:32:08 -0500 Received: by mail-wm0-f47.google.com with SMTP id g62so187117807wme.1 for ; Mon, 22 Feb 2016 10:32:07 -0800 (PST) Sender: netdev-owner@vger.kernel.org List-ID: From: Jiri Pirko There a is need for some userspace API that would allow to expose things that are not directly related to any device class like net_device of ib_device, but rather chip-wide/switch-ASIC-wide stuff. Use cases: 1) get/set of port type (Ethernet/InfiniBand) 2) setting up port splitters - split port into multiple ones and squash again, enables usage of splitter cable 3) setting up shared buffers - shared among multiple ports within one chip (work in progress) 4) configuration of switch wide properties - resources division etc - This will allow to pass configuration that is unacceptable to be passed as a module option. First patch of this set introduces a new generic Netlink based interface, called "devlink". It is similar to nl80211 model and it is heavily influenced by it, including the API definition. The devlink introduction patch implements use cases 1) and 2). Other 2 are in development atm and will be addressed by follow-ups. It is very convenient for drivers to use devlink, as you can see in other patches in this set. Counterpart for devlink is userspace tool for now called "dl". Command line interface and outputs are derived from "ip" tool so it should be easy for users to get used to it. It is available here as a standalone tool for now: https://github.com/jpirko/devlink After this is merge in kernel, I will include the "dl" or "devlink" tool into iproute2 toolset. Port type setting example: myhost:~$ dl help Usage: dl [ OPTIONS ] OBJECT { COMMAND | help } where OBJECT := { dev | port | monitor } OPTIONS := { -v/--verbose } myhost:~$ dl dev help Usage: dl dev show [DEV] Usage: dl dev set DEV [ name NEWNAME ] myhost:~$ dl dev show 0: devlink0: bus pci dev 0000:01:00.0 myhost:~$ dl port help Usage: dl port show [DEV/PORT_INDEX] Usage: dl port set DEV/PORT_INDEX [ type { eth | ib | auto} ] Usage: dl port split DEV/PORT_INDEX count Usage: dl port unsplit DEV/PORT_INDEX myhost:~$ dl port show devlink0/1: type ib ibdev mlx4_0 devlink0/2: type ib ibdev mlx4_0 myhost:~$ sudo dl port set devlink0/1 type eth myhost:~$ dl port show devlink0/1: type eth netdev ens4 devlink0/2: type ib ibdev mlx4_0 myhost:~$ sudo dl port set devlink0/2 type auto myhost:~$ dl port show devlink0/1: type eth netdev ens4 devlink0/2: type ib(auto) ibdev mlx4_0 Port splitting example: myswitch:~$ dl port devlink0/1: type eth netdev eth0 devlink0/3: type eth netdev eth1 devlink0/5: type eth netdev eth2 ... devlink0/63: type eth netdev eth31 myswitch:~$ sudo dl port split devlink0/1 2 myswitch:~$ dl port devlink0/3: type eth netdev eth1 devlink0/5: type eth netdev eth2 ... devlink0/63: type eth netdev eth31 devlink0/1: type eth netdev eth0 split_group 16 devlink0/2: type eth netdev eth32 split_group 16 myswitch:~$ sudo dl port unsplit devlink0/1 myswitch:~$ dl port devlink0/3: type eth netdev eth1 devlink0/5: type eth netdev eth2 ... devlink0/63: type eth netdev eth31 devlink0/1: type eth netdev eth0 Ido Schimmel (4): mlxsw: spectrum: Unmap local port from module during teardown mlxsw: spectrum: Store local port to module mapping during init mlxsw: spectrum: Mark unused ports using NULL mlxsw: spectrum: Introduce port splitting Jiri Pirko (5): Introduce devlink infrastructure mlx4: Implement devlink interface mlx4: Implement port type setting via devlink interface mlxsw: Implement devlink interface mlxsw: core: Add devlink port splitter callbacks MAINTAINERS | 8 + drivers/infiniband/hw/mlx4/main.c | 7 + drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 8 +- drivers/net/ethernet/mellanox/mlx4/intf.c | 9 + drivers/net/ethernet/mellanox/mlx4/main.c | 129 +++- drivers/net/ethernet/mellanox/mlx4/mlx4.h | 2 + drivers/net/ethernet/mellanox/mlxsw/core.c | 56 +- drivers/net/ethernet/mellanox/mlxsw/core.h | 2 + drivers/net/ethernet/mellanox/mlxsw/port.h | 2 + drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 238 ++++++- drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 8 +- drivers/net/ethernet/mellanox/mlxsw/switchx2.c | 20 + include/linux/mlx4/driver.h | 3 + include/net/devlink.h | 156 +++++ include/uapi/linux/devlink.h | 73 ++ net/Kconfig | 7 + net/core/Makefile | 1 + net/core/devlink.c | 887 +++++++++++++++++++++++++ 18 files changed, 1557 insertions(+), 59 deletions(-) create mode 100644 include/net/devlink.h create mode 100644 include/uapi/linux/devlink.h create mode 100644 net/core/devlink.c -- 2.5.0