From patchwork Tue Jul 6 06:41:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guangbin Huang X-Patchwork-Id: 12359927 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 B3B5FC07E9E for ; Tue, 6 Jul 2021 06:45:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B5A261945 for ; Tue, 6 Jul 2021 06:45:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230257AbhGFGrp (ORCPT ); Tue, 6 Jul 2021 02:47:45 -0400 Received: from szxga08-in.huawei.com ([45.249.212.255]:10273 "EHLO szxga08-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230148AbhGFGri (ORCPT ); Tue, 6 Jul 2021 02:47:38 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4GJtFY1RP2z1CDpv; Tue, 6 Jul 2021 14:39:29 +0800 (CST) Received: from dggemi759-chm.china.huawei.com (10.1.198.145) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Tue, 6 Jul 2021 14:44:56 +0800 Received: from localhost.localdomain (10.67.165.24) by dggemi759-chm.china.huawei.com (10.1.198.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Tue, 6 Jul 2021 14:44:56 +0800 From: Guangbin Huang To: , , CC: , , , , Subject: [RFC PATCH net-next 6/8] net: hns3: add devlink reload support for VF Date: Tue, 6 Jul 2021 14:41:30 +0800 Message-ID: <1625553692-2773-7-git-send-email-huangguangbin2@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1625553692-2773-1-git-send-email-huangguangbin2@huawei.com> References: <1625553692-2773-1-git-send-email-huangguangbin2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggemi759-chm.china.huawei.com (10.1.198.145) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC From: Hao Chen Add devlink reload support for HNS3 ethernet VF driver. Signed-off-by: Hao Chen Signed-off-by: Guangbin Huang --- .../hisilicon/hns3/hns3vf/hclgevf_devlink.c | 71 ++++++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c index 1cc6e2fac3a3..53b0b8931325 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c @@ -32,8 +32,75 @@ static int hclgevf_devlink_info_get(struct devlink *devlink, return devlink_info_version_running_put(req, "fw-version", version_str); } +static int hclgevf_devlink_reload_down(struct devlink *devlink, + bool netns_change, + enum devlink_reload_action action, + enum devlink_reload_limit limit, + struct netlink_ext_ack *extack) +{ + struct hclgevf_devlink_priv *priv = devlink_priv(devlink); + struct hclgevf_dev *hdev = priv->hdev; + struct hnae3_handle *h = &hdev->nic; + struct pci_dev *pdev = hdev->pdev; + int ret; + + if (test_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state)) { + dev_err(&pdev->dev, "reset is handling\n"); + return -EBUSY; + } + + switch (action) { + case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: + rtnl_lock(); + ret = hdev->nic_client->ops->reset_notify(h, HNAE3_DOWN_CLIENT); + if (ret) { + rtnl_unlock(); + return ret; + } + + ret = hdev->nic_client->ops->reset_notify(h, + HNAE3_UNINIT_CLIENT); + rtnl_unlock(); + return ret; + default: + return -EOPNOTSUPP; + } +} + +static int hclgevf_devlink_reload_up(struct devlink *devlink, + enum devlink_reload_action action, + enum devlink_reload_limit limit, + u32 *actions_performed, + struct netlink_ext_ack *extack) +{ + struct hclgevf_devlink_priv *priv = devlink_priv(devlink); + struct hclgevf_dev *hdev = priv->hdev; + struct hnae3_handle *h = &hdev->nic; + int ret; + + *actions_performed = BIT(action); + switch (action) { + case DEVLINK_RELOAD_ACTION_DRIVER_REINIT: + rtnl_lock(); + ret = hdev->nic_client->ops->reset_notify(h, HNAE3_INIT_CLIENT); + if (ret) { + rtnl_unlock(); + return ret; + } + + ret = hdev->nic_client->ops->reset_notify(h, HNAE3_UP_CLIENT); + rtnl_unlock(); + return ret; + default: + return -EOPNOTSUPP; + } +} + static const struct devlink_ops hclgevf_devlink_ops = { .info_get = hclgevf_devlink_info_get, + .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), + .reload_down = hclgevf_devlink_reload_down, + .reload_up = hclgevf_devlink_reload_up, }; int hclgevf_devlink_init(struct hclgevf_dev *hdev) @@ -60,6 +127,8 @@ int hclgevf_devlink_init(struct hclgevf_dev *hdev) hdev->devlink = devlink; + devlink_reload_enable(devlink); + return 0; out_reg_fail: @@ -74,6 +143,8 @@ void hclgevf_devlink_uninit(struct hclgevf_dev *hdev) if (!devlink) return; + devlink_reload_disable(devlink); + devlink_unregister(devlink); devlink_free(devlink);