From patchwork Sun Feb 7 08:44:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parav Pandit X-Patchwork-Id: 379076 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 48E6BC4332B for ; Sun, 7 Feb 2021 08:45:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C3B264E72 for ; Sun, 7 Feb 2021 08:45:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229704AbhBGIpX (ORCPT ); Sun, 7 Feb 2021 03:45:23 -0500 Received: from hqnvemgate25.nvidia.com ([216.228.121.64]:14525 "EHLO hqnvemgate25.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229601AbhBGIpJ (ORCPT ); Sun, 7 Feb 2021 03:45:09 -0500 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate25.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Sun, 07 Feb 2021 00:44:29 -0800 Received: from sw-mtx-036.mtx.labs.mlnx (172.20.145.6) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Sun, 7 Feb 2021 08:44:28 +0000 From: Parav Pandit To: , , CC: Parav Pandit Subject: [PATCH net-next v2 5/7] netdevsim: Simulate port function state for a PCI port Date: Sun, 7 Feb 2021 10:44:10 +0200 Message-ID: <20210207084412.252259-6-parav@nvidia.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210207084412.252259-1-parav@nvidia.com> References: <20210206125551.8616-1-parav@nvidia.com> <20210207084412.252259-1-parav@nvidia.com> MIME-Version: 1.0 X-Originating-IP: [172.20.145.6] X-ClientProxiedBy: HQMAIL111.nvidia.com (172.20.187.18) To HQMAIL107.nvidia.com (172.20.187.13) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1612687469; bh=I+Za4fGJu0Hwrbf3oi5ivQ4WDIg32epMIBugfJ8ZxuM=; h=From:To:CC:Subject:Date:Message-ID:X-Mailer:In-Reply-To: References:MIME-Version:Content-Transfer-Encoding:Content-Type: X-Originating-IP:X-ClientProxiedBy; b=mkQtNNfwWrAWJYURMY/necrIGNYKrOOPzyxCVcQceXGOkUXjKTOFtLjk+OP80vVkK WPG0mPdWK91Zdy7pWCMTiO/OFLjV/y+5rIKWTRb1sPbHrMbladnZ11kmbF5M0JBw2n Q4ZaIzr92pr/Bi+LQorRVAwKvhMy3AqiyVvU5xaL0MTOc/gx/4Aish5B6coTp5uJqc D5wp9OKR9U3uxEH5Fmu2JfmhkP4K0EO3bA2hXQzyRX4vUhgnDeOGJT/Yguoy4zo4oo asJJELDV2cnZ+O7c3gcKGyrK9HHkU+M4+G5a1lBD0tmv+1tm68rOK6aqBO+s8VUDmW UiJNz2SEbSRAQ== Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Simulate port function state of a PCI port. This enables users to get the state of the PCI port function. Example of a PCI SF port which supports a port function hw_addr set: Create a device with ID=10 and one physical port. $ echo "10 1" > /sys/bus/netdevsim/new_device Add PCI PF port: $ devlink port add netdevsim/netdevsim10 flavour pcipf pfnum 2 netdevsim/netdevsim10/1: type eth netdev eth1 flavour pcipf controller 0 pfnum 2 external false splittable false function: hw_addr 00:00:00:00:00:00 $ devlink port add netdevsim/netdevsim10 flavour pcisf pfnum 2 netdevsim/netdevsim10/2: type eth netdev eth2 flavour pcisf controller 0 pfnum 2 sfnum 0 splittable false function: hw_addr 00:00:00:00:00:00 Show devlink port: $ devlink port show netdevsim/netdevsim10/2 netdevsim/netdevsim10/2: type eth netdev eth2 flavour pcisf controller 0 pfnum 2 sfnum 0 splittable false function: hw_addr 00:00:00:00:00:00 state inactive opstate detached Show the port and function attributes in JSON format: $ devlink port show netdevsim/netdevsim10/2 -jp { "port": { "netdevsim/netdevsim10/2": { "type": "eth", "netdev": "eth2", "flavour": "pcisf", "controller": 0, "pfnum": 2, "sfnum": 0, "splittable": false, "function": { "hw_addr": "00:00:00:00:00:00", "state": "inactive", "opstate": "detached" } } } } Signed-off-by: Parav Pandit --- drivers/net/netdevsim/dev.c | 1 + drivers/net/netdevsim/netdevsim.h | 5 +++++ drivers/net/netdevsim/port_function.c | 22 ++++++++++++++++++++++ 3 files changed, 28 insertions(+) diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index ab15b5f7e955..9f2164ea89cd 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -909,6 +909,7 @@ static const struct devlink_ops nsim_dev_devlink_ops = { .port_del = nsim_dev_devlink_port_del, .port_function_hw_addr_get = nsim_dev_port_fn_hw_addr_get, .port_function_hw_addr_set = nsim_dev_port_fn_hw_addr_set, + .port_fn_state_get = nsim_dev_port_fn_state_get, }; #define NSIM_DEV_MAX_MACS_DEFAULT 32 diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h index aafe2027a112..c0544d93e1e8 100644 --- a/drivers/net/netdevsim/netdevsim.h +++ b/drivers/net/netdevsim/netdevsim.h @@ -328,3 +328,8 @@ int nsim_dev_port_fn_hw_addr_set(struct devlink *devlink, struct devlink_port *port, const u8 *hw_addr, int hw_addr_len, struct netlink_ext_ack *extack); +int nsim_dev_port_fn_state_get(struct devlink *devlink, + struct devlink_port *port, + enum devlink_port_fn_state *state, + enum devlink_port_fn_opstate *opstate, + struct netlink_ext_ack *extack); diff --git a/drivers/net/netdevsim/port_function.c b/drivers/net/netdevsim/port_function.c index 5d6c5a732546..a25c449e4559 100644 --- a/drivers/net/netdevsim/port_function.c +++ b/drivers/net/netdevsim/port_function.c @@ -17,6 +17,7 @@ struct nsim_port_fn { u32 sfnum; u16 pfnum; u8 hw_addr[ETH_ALEN]; + u8 state; /* enum devlink_port_fn_state */ }; static struct devlink_port * @@ -248,6 +249,7 @@ static int nsim_devlink_port_fn_add(struct devlink *devlink, goto pf_err; } + port->state = DEVLINK_PORT_FN_STATE_INACTIVE; err = devlink_port_register(devlink, &port->dl_port, port->port_index); if (err) goto reg_err; @@ -482,3 +484,23 @@ int nsim_dev_port_fn_hw_addr_set(struct devlink *devlink, memcpy(port->hw_addr, hw_addr, ETH_ALEN); return 0; } + +int nsim_dev_port_fn_state_get(struct devlink *devlink, + struct devlink_port *dl_port, + enum devlink_port_fn_state *state, + enum devlink_port_fn_opstate *opstate, + struct netlink_ext_ack *extack) +{ + struct nsim_dev *nsim_dev = devlink_priv(devlink); + struct nsim_port_fn *port; + + port = nsim_dev_to_port_fn(nsim_dev, dl_port, extack); + if (IS_ERR(port)) + return PTR_ERR(port); + *state = port->state; + if (port->state == DEVLINK_PORT_FN_STATE_INACTIVE) + *opstate = DEVLINK_PORT_FN_OPSTATE_DETACHED; + else + *opstate = DEVLINK_PORT_FN_OPSTATE_ATTACHED; + return 0; +}