From patchwork Sun Feb 7 08:44:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parav Pandit X-Patchwork-Id: 379077 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 2E239C433E9 for ; Sun, 7 Feb 2021 08:45:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0013664E33 for ; Sun, 7 Feb 2021 08:45:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229693AbhBGIpV (ORCPT ); Sun, 7 Feb 2021 03:45:21 -0500 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:4343 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229587AbhBGIpJ (ORCPT ); Sun, 7 Feb 2021 03:45:09 -0500 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Sun, 07 Feb 2021 00:44:28 -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 4/7] netdevsim: Simulate set hardware address of a PCI port Date: Sun, 7 Feb 2021 10:44:09 +0200 Message-ID: <20210207084412.252259-5-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=1612687468; bh=pGK2Af0qn2QRGDOFRDWa+BYwAzh3f5JhXbZqhMSITr8=; 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=YZxFymYIva5+8P7SkscZ9OBomcjPXPjLzkYXYSKf6nu8/b8SycYsEfda/OGyovUyd aIJLUI9XLT0UuaC6DdK3XOm28uzh3teYIkb8ri+3Vee9kfiIRh7AtsKnJJfmUAuRLF YNwBRS9BsM7sVCPjLJeMoCFapTgktUcjy86+UPLSCAsWCKeNGJ58U3ZdcTiEpKGcCx aHe/JxobLCs5OvC4sKW0Ah2aMpVD24T400WWb88bV0Kva19ClzcbHyjOjB5mUah1sj MnrmBQUF1lusYSx1JIsizGo7SVCoESpzqrxb5PabUrdAnmSMLJmpjX24zeSYYjCxMg iV45jlfHTBLJA== Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Allow users to get/set hardware address for the PCI port. Below example creates one devlink port, queries a port, sets a hardware address. 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 Set the MAC address: $ devlink port function set netdevsim/netdevsim10/2 hw_addr 00:11:22:33:44:55 Show devlink ports: $ devlink port show netdevsim/netdevsim10/0: type eth netdev eth0 flavour physical port 1 splittable false 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 netdevsim/netdevsim10/2: type eth netdev eth2 flavour pcisf controller 0 pfnum 2 sfnum 0 splittable false function: hw_addr 00:11:22:33:44:55 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": "00:11:22:33:44:55" } } } } Signed-off-by: Parav Pandit --- drivers/net/netdevsim/dev.c | 1 + drivers/net/netdevsim/netdevsim.h | 4 ++++ drivers/net/netdevsim/port_function.c | 21 +++++++++++++++++++++ 3 files changed, 26 insertions(+) diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 6046906d6b85..ab15b5f7e955 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -908,6 +908,7 @@ static const struct devlink_ops nsim_dev_devlink_ops = { .port_new = nsim_dev_devlink_port_new, .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, }; #define NSIM_DEV_MAX_MACS_DEFAULT 32 diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h index e910c3cf480d..aafe2027a112 100644 --- a/drivers/net/netdevsim/netdevsim.h +++ b/drivers/net/netdevsim/netdevsim.h @@ -324,3 +324,7 @@ int nsim_dev_port_fn_hw_addr_get(struct devlink *devlink, struct devlink_port *port, u8 *hw_addr, int *hw_addr_len, struct netlink_ext_ack *extack); +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); diff --git a/drivers/net/netdevsim/port_function.c b/drivers/net/netdevsim/port_function.c index 882d1bdbfcf5..5d6c5a732546 100644 --- a/drivers/net/netdevsim/port_function.c +++ b/drivers/net/netdevsim/port_function.c @@ -461,3 +461,24 @@ int nsim_dev_port_fn_hw_addr_get(struct devlink *devlink, *hw_addr_len = ETH_ALEN; return 0; } + +int nsim_dev_port_fn_hw_addr_set(struct devlink *devlink, + struct devlink_port *dl_port, + const u8 *hw_addr, int hw_addr_len, + struct netlink_ext_ack *extack) +{ + struct nsim_dev *nsim_dev = devlink_priv(devlink); + struct nsim_port_fn *port; + + if (hw_addr_len != ETH_ALEN) { + NL_SET_ERR_MSG_MOD(extack, + "Hardware address must be 6 bytes long"); + return -EOPNOTSUPP; + } + port = nsim_dev_to_port_fn(nsim_dev, dl_port, extack); + if (IS_ERR(port)) + return PTR_ERR(port); + + memcpy(port->hw_addr, hw_addr, ETH_ALEN); + return 0; +}