From patchwork Sun Aug 22 13:59:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 501482 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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 3FA54C432BE for ; Sun, 22 Aug 2021 14:01:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2030B61207 for ; Sun, 22 Aug 2021 14:01:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234187AbhHVOCg (ORCPT ); Sun, 22 Aug 2021 10:02:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233642AbhHVOCU (ORCPT ); Sun, 22 Aug 2021 10:02:20 -0400 Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com [IPv6:2a00:1450:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68A92C0617AE; Sun, 22 Aug 2021 07:01:35 -0700 (PDT) Received: by mail-wr1-x42c.google.com with SMTP id f5so21904039wrm.13; Sun, 22 Aug 2021 07:01:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=IPujwYC6E9l7jqY2RWqen9mgADujdWEnooR3WaHxdYM=; b=XFcTU7lkZFZ7hC4iTBXDTcHN55VjjNH6RXOTDZkKc0YnZc/6jT31WBHS6tmdfcrj5M kMM2+OOtNmzrzyN89i530GbMMw20IC3bZr992+nEvn+KZpnJRJc7g0XcLYPKutrOkx3Q 5Ovr0pwYzdGVAueDJqzIbFDskOII2+fegMIkd7usoBudkWR1D18UDmfI4WgtoYRveg1T EmxhAnJdQwkzhmAg0pDeGctKYwXEwbkNfL4R8Br+RWe/JlHsrRvzLhc4esdysyI399n4 Bw509HxI+TTLM20zIx9YqDKrEJBSW3JKEhtCEgtJYyv5QfFIrCVJke+KfM+itFkIM8V4 WiuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=IPujwYC6E9l7jqY2RWqen9mgADujdWEnooR3WaHxdYM=; b=WoPHLqQOnLIIV8VTXd/aoKWl8Iw+2swvpYH1giMzT8olrXxQzeZfGkjYXBXQ7/eRau Qy3RnP64x8aKYVSbwnfPe3fQx2pZBt7SoEE4LO9HWVP9K9hxQ6CctOdzhMIzW70H8M17 K0lE75nMvRuDxiWkkSF3GVxBADzQx8qEgLA+V4CJqCKNl29sYMYjO0wHcDbRac5hAZmE XsETwjmos7CJkPe3xSKPueQiy2Oc5EQVbbe958s3gS8svizLHdGgwlanbey4NHLC+fL1 UwRxrb6pcesVeFlr7XSd2TX0JJgjhudbADIazJ+GWnREoUm9TtwI4lnYdwjdfr+mciOW FGEA== X-Gm-Message-State: AOAM532ONk112tuK2i+PXYZocnMi4vW+0qDCiTDchDYhDL+axQ4OnAmp BQGnXCVjYCC0gR6Fte2/5NnGT10Iv6g+Iw== X-Google-Smtp-Source: ABdhPJw1WUokU8P1rcYCEmDesECHWY5gmLrlPx40jjL8iTSNLxSN1cQkQhTsu5pBrfWwtH+7dgAYpw== X-Received: by 2002:a5d:690b:: with SMTP id t11mr6974024wru.182.1629640893822; Sun, 22 Aug 2021 07:01:33 -0700 (PDT) Received: from ?IPv6:2003:ea:8f08:4500:fc53:5e22:f926:c43b? (p200300ea8f084500fc535e22f926c43b.dip0.t-ipconnect.de. [2003:ea:8f08:4500:fc53:5e22:f926:c43b]) by smtp.googlemail.com with ESMTPSA id m21sm9894283wms.3.2021.08.22.07.01.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 22 Aug 2021 07:01:33 -0700 (PDT) Subject: [PATCH 11/12] cxgb4: Search VPD with pci_vpd_find_ro_info_keyword() From: Heiner Kallweit To: Bjorn Helgaas , Raju Rangoju , Jakub Kicinski , David Miller Cc: "linux-pci@vger.kernel.org" , "netdev@vger.kernel.org" References: <1ca29408-7bc7-4da5-59c7-87893c9e0442@gmail.com> Message-ID: Date: Sun, 22 Aug 2021 15:59:21 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <1ca29408-7bc7-4da5-59c7-87893c9e0442@gmail.com> Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use pci_vpd_find_ro_info_keyword() to search for keywords in VPD to simplify the code. Signed-off-by: Heiner Kallweit --- drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 67 +++++++++------------- 1 file changed, 27 insertions(+), 40 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index 2aeb2f80f..5e8ac42ac 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -2743,10 +2743,9 @@ int t4_seeprom_wp(struct adapter *adapter, bool enable) */ int t4_get_raw_vpd_params(struct adapter *adapter, struct vpd_params *p) { - int i, ret = 0, addr; - int sn, pn, na; + unsigned int id_len, pn_len, sn_len, na_len; + int sn, pn, na, addr, ret = 0; u8 *vpd, base_val = 0; - unsigned int vpdr_len, kw_offset, id_len; vpd = vmalloc(VPD_LEN); if (!vpd) @@ -2772,60 +2771,48 @@ int t4_get_raw_vpd_params(struct adapter *adapter, struct vpd_params *p) } id_len = pci_vpd_lrdt_size(vpd); - if (id_len > ID_LEN) - id_len = ID_LEN; - i = pci_vpd_find_tag(vpd, VPD_LEN, PCI_VPD_LRDT_RO_DATA); - if (i < 0) { - dev_err(adapter->pdev_dev, "missing VPD-R section\n"); + ret = pci_vpd_check_csum(vpd, VPD_LEN); + if (ret) { + dev_err(adapter->pdev_dev, "VPD checksum incorrect or missing\n"); ret = -EINVAL; goto out; } - vpdr_len = pci_vpd_lrdt_size(&vpd[i]); - kw_offset = i + PCI_VPD_LRDT_TAG_SIZE; - if (vpdr_len + kw_offset > VPD_LEN) { - dev_err(adapter->pdev_dev, "bad VPD-R length %u\n", vpdr_len); - ret = -EINVAL; + ret = pci_vpd_find_ro_info_keyword(vpd, VPD_LEN, + PCI_VPD_RO_KEYWORD_SERIALNO, &sn_len); + if (ret < 0) goto out; - } + sn = ret; -#define FIND_VPD_KW(var, name) do { \ - var = pci_vpd_find_info_keyword(vpd, kw_offset, vpdr_len, name); \ - if (var < 0) { \ - dev_err(adapter->pdev_dev, "missing VPD keyword " name "\n"); \ - ret = -EINVAL; \ - goto out; \ - } \ - var += PCI_VPD_INFO_FLD_HDR_SIZE; \ -} while (0) - - ret = pci_vpd_check_csum(vpd, VPD_LEN); - if (ret) { - dev_err(adapter->pdev_dev, "VPD checksum incorrect or missing\n"); - ret = -EINVAL; + ret = pci_vpd_find_ro_info_keyword(vpd, VPD_LEN, + PCI_VPD_RO_KEYWORD_PARTNO, &pn_len); + if (ret < 0) goto out; - } + pn = ret; - FIND_VPD_KW(sn, "SN"); - FIND_VPD_KW(pn, "PN"); - FIND_VPD_KW(na, "NA"); -#undef FIND_VPD_KW + ret = pci_vpd_find_ro_info_keyword(vpd, VPD_LEN, "NA", &na_len); + if (ret < 0) + goto out; + na = ret; - memcpy(p->id, vpd + PCI_VPD_LRDT_TAG_SIZE, id_len); + memcpy(p->id, vpd + PCI_VPD_LRDT_TAG_SIZE, min_t(int, id_len, ID_LEN)); strim(p->id); - i = pci_vpd_info_field_size(vpd + sn - PCI_VPD_INFO_FLD_HDR_SIZE); - memcpy(p->sn, vpd + sn, min(i, SERNUM_LEN)); + memcpy(p->sn, vpd + sn, min_t(int, sn_len, SERNUM_LEN)); strim(p->sn); - i = pci_vpd_info_field_size(vpd + pn - PCI_VPD_INFO_FLD_HDR_SIZE); - memcpy(p->pn, vpd + pn, min(i, PN_LEN)); + memcpy(p->pn, vpd + pn, min_t(int, pn_len, PN_LEN)); strim(p->pn); - memcpy(p->na, vpd + na, min(i, MACADDR_LEN)); + memcpy(p->na, vpd + na, min_t(int, na_len, MACADDR_LEN)); strim((char *)p->na); out: vfree(vpd); - return ret < 0 ? ret : 0; + if (ret < 0) { + dev_err(adapter->pdev_dev, "error reading VPD\n"); + return ret; + } + + return 0; } /**