From patchwork Fri May 14 14:11:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Saleem, Shiraz" X-Patchwork-Id: 439787 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,USER_AGENT_GIT autolearn=unavailable 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 AE76AC433B4 for ; Fri, 14 May 2021 14:15:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8CAB16145D for ; Fri, 14 May 2021 14:15:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234326AbhENOQm (ORCPT ); Fri, 14 May 2021 10:16:42 -0400 Received: from mga04.intel.com ([192.55.52.120]:41450 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234318AbhENOQ2 (ORCPT ); Fri, 14 May 2021 10:16:28 -0400 IronPort-SDR: BFB3kK902IwC2A3OHAXrb4GI+Z5s9oVOiDDUeWywKB6ww+Cyg98uS/R161MXJT95spr/IFi8f1 Wc7pMDVAwMPg== X-IronPort-AV: E=McAfee;i="6200,9189,9984"; a="198227398" X-IronPort-AV: E=Sophos;i="5.82,300,1613462400"; d="scan'208";a="198227398" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 May 2021 07:15:11 -0700 IronPort-SDR: kW9AIZhrt3v58TkmElK+3rdpZO1HCS2clX/EhjxCHiELhcNoFbosTbh/ESrCYd4fpHAhpidYh0 vyUBMD1RVXYQ== X-IronPort-AV: E=Sophos;i="5.82,300,1613462400"; d="scan'208";a="542867705" Received: from ssaleem-mobl.amr.corp.intel.com ([10.212.97.94]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 May 2021 07:15:10 -0700 From: Shiraz Saleem To: dledford@redhat.com, jgg@nvidia.com, kuba@kernel.org, davem@davemloft.net Cc: linux-rdma@vger.kernel.org, netdev@vger.kernel.org, david.m.ertman@intel.com, anthony.l.nguyen@intel.com, Shiraz Saleem Subject: [PATCH v5 06/22] i40e: Register auxiliary devices to provide RDMA Date: Fri, 14 May 2021 09:11:58 -0500 Message-Id: <20210514141214.2120-7-shiraz.saleem@intel.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20210514141214.2120-1-shiraz.saleem@intel.com> References: <20210514141214.2120-1-shiraz.saleem@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Convert i40e to use the auxiliary bus infrastructure to export the RDMA functionality of the device to the RDMA driver. Register i40e client auxiliary RDMA device on the auxiliary bus per PCIe device function for the new auxiliary rdma driver (irdma) to attach to. The global i40e_register_client and i40e_unregister_client symbols will be obsoleted once irdma replaces i40iw in the kernel for the X722 device. Signed-off-by: Shiraz Saleem --- drivers/net/ethernet/intel/Kconfig | 1 + drivers/net/ethernet/intel/i40e/i40e.h | 2 + drivers/net/ethernet/intel/i40e/i40e_client.c | 152 ++++++++++++++++++++++---- drivers/net/ethernet/intel/i40e/i40e_main.c | 1 + 4 files changed, 136 insertions(+), 20 deletions(-) diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig index d8a12da..eae1b42 100644 --- a/drivers/net/ethernet/intel/Kconfig +++ b/drivers/net/ethernet/intel/Kconfig @@ -241,6 +241,7 @@ config I40E tristate "Intel(R) Ethernet Controller XL710 Family support" imply PTP_1588_CLOCK depends on PCI + select AUXILIARY_BUS help This driver supports Intel(R) Ethernet Controller XL710 Family of devices. For more information on how to identify your adapter, go diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 85d3dd3a..b9417dc 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -870,6 +870,8 @@ struct i40e_netdev_priv { struct i40e_vsi *vsi; }; +extern struct ida i40e_client_ida; + /* struct that defines an interrupt vector */ struct i40e_q_vector { struct i40e_vsi *vsi; diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index 32f3fac..251da69 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -12,6 +12,7 @@ static struct i40e_client *registered_client; static LIST_HEAD(i40e_devices); static DEFINE_MUTEX(i40e_device_mutex); +DEFINE_IDA(i40e_client_ida); static int i40e_client_virtchnl_send(struct i40e_info *ldev, struct i40e_client *client, @@ -275,6 +276,57 @@ void i40e_client_update_msix_info(struct i40e_pf *pf) cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector]; } +static void i40e_auxiliary_dev_release(struct device *dev) +{ + struct i40e_auxiliary_device *i40e_aux_dev = + container_of(dev, struct i40e_auxiliary_device, aux_dev.dev); + + ida_free(&i40e_client_ida, i40e_aux_dev->aux_dev.id); + kfree(i40e_aux_dev); +} + +static int i40e_register_auxiliary_dev(struct i40e_info *ldev, const char *name) +{ + struct i40e_auxiliary_device *i40e_aux_dev; + struct pci_dev *pdev = ldev->pcidev; + struct auxiliary_device *aux_dev; + int ret; + + i40e_aux_dev = kzalloc(sizeof(*i40e_aux_dev), GFP_KERNEL); + if (!i40e_aux_dev) + return -ENOMEM; + + i40e_aux_dev->ldev = ldev; + + aux_dev = &i40e_aux_dev->aux_dev; + aux_dev->name = name; + aux_dev->dev.parent = &pdev->dev; + aux_dev->dev.release = i40e_auxiliary_dev_release; + ldev->aux_dev = aux_dev; + + ret = ida_alloc(&i40e_client_ida, GFP_KERNEL); + if (ret < 0) { + kfree(i40e_aux_dev); + return ret; + } + aux_dev->id = ret; + + ret = auxiliary_device_init(aux_dev); + if (ret < 0) { + ida_free(&i40e_client_ida, aux_dev->id); + kfree(i40e_aux_dev); + return ret; + } + + ret = auxiliary_device_add(aux_dev); + if (ret) { + auxiliary_device_uninit(aux_dev); + return ret; + } + + return ret; +} + /** * i40e_client_add_instance - add a client instance struct to the instance list * @pf: pointer to the board struct @@ -286,9 +338,6 @@ static void i40e_client_add_instance(struct i40e_pf *pf) struct netdev_hw_addr *mac = NULL; struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; - if (!registered_client || pf->cinst) - return; - cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); if (!cdev) return; @@ -308,11 +357,8 @@ static void i40e_client_add_instance(struct i40e_pf *pf) cdev->lan_info.fw_build = pf->hw.aq.fw_build; set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state); - if (i40e_client_get_params(vsi, &cdev->lan_info.params)) { - kfree(cdev); - cdev = NULL; - return; - } + if (i40e_client_get_params(vsi, &cdev->lan_info.params)) + goto free_cdev; mac = list_first_entry(&cdev->lan_info.netdev->dev_addrs.list, struct netdev_hw_addr, list); @@ -324,7 +370,17 @@ static void i40e_client_add_instance(struct i40e_pf *pf) cdev->client = registered_client; pf->cinst = cdev; - i40e_client_update_msix_info(pf); + cdev->lan_info.msix_count = pf->num_iwarp_msix; + cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector]; + + if (i40e_register_auxiliary_dev(&cdev->lan_info, "intel_rdma_iwarp")) + goto free_cdev; + + return; + +free_cdev: + kfree(cdev); + pf->cinst = NULL; } /** @@ -345,7 +401,7 @@ void i40e_client_del_instance(struct i40e_pf *pf) **/ void i40e_client_subtask(struct i40e_pf *pf) { - struct i40e_client *client = registered_client; + struct i40e_client *client; struct i40e_client_instance *cdev; struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; int ret = 0; @@ -359,9 +415,11 @@ void i40e_client_subtask(struct i40e_pf *pf) test_bit(__I40E_CONFIG_BUSY, pf->state)) return; - if (!client || !cdev) + if (!cdev || !cdev->client) return; + client = cdev->client; + /* Here we handle client opens. If the client is down, and * the netdev is registered, then open the client. */ @@ -423,16 +481,8 @@ int i40e_lan_add_device(struct i40e_pf *pf) pf->hw.pf_id, pf->hw.bus.bus_id, pf->hw.bus.device, pf->hw.bus.func); - /* If a client has already been registered, we need to add an instance - * of it to our new LAN device. - */ - if (registered_client) - i40e_client_add_instance(pf); + i40e_client_add_instance(pf); - /* Since in some cases register may have happened before a device gets - * added, we can schedule a subtask to go initiate the clients if - * they can be launched at probe time. - */ set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state); i40e_service_event_schedule(pf); @@ -449,9 +499,13 @@ int i40e_lan_add_device(struct i40e_pf *pf) **/ int i40e_lan_del_device(struct i40e_pf *pf) { + struct auxiliary_device *aux_dev = pf->cinst->lan_info.aux_dev; struct i40e_device *ldev, *tmp; int ret = -ENODEV; + auxiliary_device_delete(aux_dev); + auxiliary_device_uninit(aux_dev); + /* First, remove any client instance. */ i40e_client_del_instance(pf); @@ -732,6 +786,64 @@ static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev, return err; } +int i40e_client_device_register(struct i40e_info *ldev) +{ + struct i40e_client *client; + struct i40e_pf *pf; + + if (!ldev) { + pr_err("Failed to reg client dev: ldev ptr NULL\n"); + return -EINVAL; + } + + client = ldev->client; + pf = ldev->pf; + if (!client) { + pr_err("Failed to reg client dev: client ptr NULL\n"); + return -EINVAL; + } + + if (!ldev->ops || !client->ops) { + pr_err("Failed to reg client dev: client dev peer_ops/ops NULL\n"); + return -EINVAL; + } + + pf->cinst->client = ldev->client; + set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state); + i40e_service_event_schedule(pf); + + return 0; +} +EXPORT_SYMBOL_GPL(i40e_client_device_register); + +void i40e_client_device_unregister(struct i40e_info *ldev) +{ + struct i40e_pf *pf = ldev->pf; + struct i40e_client_instance *cdev = pf->cinst; + + while (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state)) + usleep_range(500, 1000); + + if (!cdev || !cdev->client || !cdev->client->ops || + !cdev->client->ops->close) { + dev_err(&pf->pdev->dev, "Cannot close client device\n"); + return; + } + if (test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { + cdev->client->ops->close(&cdev->lan_info, cdev->client, false); + clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); + i40e_client_release_qvlist(&cdev->lan_info); + } + + pf->cinst->client = NULL; + clear_bit(__I40E_SERVICE_SCHED, pf->state); +} +EXPORT_SYMBOL_GPL(i40e_client_device_unregister); + +/* Retain these legacy global registration/unregistration calls till i40iw is + * removed from the kernel. The irdma unified driver does not use these + * exported symbols. + */ /** * i40e_register_client - Register a i40e client driver with the L2 driver * @client: pointer to the i40e_client struct diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 704e4748..9db1968 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -16270,6 +16270,7 @@ static void __exit i40e_exit_module(void) { pci_unregister_driver(&i40e_driver); destroy_workqueue(i40e_wq); + ida_destroy(&i40e_client_ida); i40e_dbg_exit(); } module_exit(i40e_exit_module);