From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36925C433F5 for ; Fri, 29 Oct 2021 07:48:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DD2661151 for ; Fri, 29 Oct 2021 07:48:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232320AbhJ2HvB (ORCPT ); Fri, 29 Oct 2021 03:51:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232290AbhJ2Hux (ORCPT ); Fri, 29 Oct 2021 03:50:53 -0400 Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7AD88C061714 for ; Fri, 29 Oct 2021 00:48:25 -0700 (PDT) Received: by mail-pg1-x530.google.com with SMTP id e65so9145513pgc.5 for ; Fri, 29 Oct 2021 00:48:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=6jIcDpdO9Ci/8DYhyd0odk7AqIemH//mL6+LpmIKVLM=; b=OMM3M1o4u4S0bT0/KpHTmHDP7GYbobgpJYRzccYvOXA4VLnqKAq5wvfpLYUsigsZxX w2/cjWQnuITo6gM8pbFmwvznZKcSSt4t+Z9/8HxXiH4fnELLsjqncAM/dt/VLueKiHqE yu4+KHLGoZP/TA2VyFASJYAxW9e89qU8cj7gY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=6jIcDpdO9Ci/8DYhyd0odk7AqIemH//mL6+LpmIKVLM=; b=E1bf/kj8pVk6f4VjN63ZhzNxNom8bWhd7JfJEqhtl8Z4sWKDbG+bP6ErNp6A7KSrev 21Y2Nqt2FB43pvLB1twubbFojRzhiogpW1Tlvgdjej2TcDOOgM872NLm3s4FEJ3wStpP mDbLT5fFrgVNBbIQDJZY1SyVn40W/Qupm0P2hmY5+T9eYFtZY7+IqPy/8xJTEx6P4rt3 DSRov2AvooIFB+RQQ4UIu7rmGLB4i8MKl9r7edgBzVdjreE4vzI0wBuHtB5JE3o3NbOl Mo/pFW8VSvT+2Pq55BWzA7UEJ4cX4Ugo/zpTtFQRHZEXS0lebIPf/JUqoRb+neTqLAZv /oSg== X-Gm-Message-State: AOAM533fec1sBunStlGalVWyUeJNoteDiPz9PgYdkaYJo52l7y+z6vKL yZupyyj7al0ibD26neCDMi/EuQ== X-Google-Smtp-Source: ABdhPJzcgz1EXbNyU/CJO7Q12IfcbudoBbCjIUgBcqgilqqad+cSqF3QC1QdSkd7wbos3uvjyF0qtA== X-Received: by 2002:a63:ea4e:: with SMTP id l14mr2403911pgk.406.1635493704398; Fri, 29 Oct 2021 00:48:24 -0700 (PDT) Received: from localhost.swdvt.lab.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id s18sm5721186pfc.87.2021.10.29.00.48.23 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 29 Oct 2021 00:48:23 -0700 (PDT) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org, kuba@kernel.org, edwin.peer@broadcom.com, gospo@broadcom.com, jiri@nvidia.com Subject: [PATCH net-next v2 10/19] bnxt_en: Refactor coredump functions Date: Fri, 29 Oct 2021 03:47:47 -0400 Message-Id: <1635493676-10767-11-git-send-email-michael.chan@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1635493676-10767-1-git-send-email-michael.chan@broadcom.com> References: <1635493676-10767-1-git-send-email-michael.chan@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000055f39305cf790df8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --00000000000055f39305cf790df8 From: Edwin Peer The coredump functionality will be used by devlink health. Refactor these functions that get coredump and coredump length. There is no functional change, but the following checkpatch warnings were addressed: - strscpy is preferred over strlcpy. - sscanf results should be checked, with an additional warning. Signed-off-by: Edwin Peer Signed-off-by: Michael Chan --- .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 48 ++++++++++++------- 1 file changed, 31 insertions(+), 17 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 15c518024965..fe832f97f905 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -3808,7 +3808,7 @@ bnxt_fill_coredump_record(struct bnxt *bp, struct bnxt_coredump_record *record, record->low_version = 0; record->high_version = 1; record->asic_state = 0; - strlcpy(record->system_name, utsname()->nodename, + strscpy(record->system_name, utsname()->nodename, sizeof(record->system_name)); record->year = cpu_to_le16(tm.tm_year + 1900); record->month = cpu_to_le16(tm.tm_mon + 1); @@ -3820,11 +3820,12 @@ bnxt_fill_coredump_record(struct bnxt *bp, struct bnxt_coredump_record *record, strcpy(record->commandline, "ethtool -w"); record->total_segments = cpu_to_le32(total_segs); - sscanf(utsname()->release, "%u.%u", &os_ver_major, &os_ver_minor); + if (sscanf(utsname()->release, "%u.%u", &os_ver_major, &os_ver_minor) != 2) + netdev_warn(bp->dev, "Unknown OS release in coredump\n"); record->os_ver_major = cpu_to_le32(os_ver_major); record->os_ver_minor = cpu_to_le32(os_ver_minor); - strlcpy(record->os_name, utsname()->sysname, 32); + strscpy(record->os_name, utsname()->sysname, sizeof(record->os_name)); time64_to_tm(end, 0, &tm); record->end_year = cpu_to_le16(tm.tm_year + 1900); record->end_month = cpu_to_le16(tm.tm_mon + 1); @@ -3842,7 +3843,7 @@ bnxt_fill_coredump_record(struct bnxt *bp, struct bnxt_coredump_record *record, record->ioctl_high_version = 0; } -static int bnxt_get_coredump(struct bnxt *bp, void *buf, u32 *dump_len) +static int __bnxt_get_coredump(struct bnxt *bp, void *buf, u32 *dump_len) { u32 ver_get_resp_len = sizeof(struct hwrm_ver_get_output); u32 offset = 0, seg_hdr_len, seg_record_len, buf_len = 0; @@ -3945,6 +3946,30 @@ static int bnxt_get_coredump(struct bnxt *bp, void *buf, u32 *dump_len) return rc; } +static int bnxt_get_coredump(struct bnxt *bp, u16 dump_type, void *buf, u32 *dump_len) +{ + if (dump_type == BNXT_DUMP_CRASH) { +#ifdef CONFIG_TEE_BNXT_FW + return tee_bnxt_copy_coredump(buf, 0, *dump_len); +#else + return -EOPNOTSUPP; +#endif + } else { + return __bnxt_get_coredump(bp, buf, dump_len); + } +} + +static u32 bnxt_get_coredump_length(struct bnxt *bp, u16 dump_type) +{ + u32 len = 0; + + if (dump_type == BNXT_DUMP_CRASH) + len = BNXT_CRASH_DUMP_LEN; + else + __bnxt_get_coredump(bp, NULL, &len); + return len; +} + static int bnxt_set_dump(struct net_device *dev, struct ethtool_dump *dump) { struct bnxt *bp = netdev_priv(dev); @@ -3976,10 +4001,7 @@ static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump) bp->ver_resp.hwrm_fw_rsvd_8b; dump->flag = bp->dump_flag; - if (bp->dump_flag == BNXT_DUMP_CRASH) - dump->len = BNXT_CRASH_DUMP_LEN; - else - bnxt_get_coredump(bp, NULL, &dump->len); + dump->len = bnxt_get_coredump_length(bp, bp->dump_flag); return 0; } @@ -3994,15 +4016,7 @@ static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump, memset(buf, 0, dump->len); dump->flag = bp->dump_flag; - if (dump->flag == BNXT_DUMP_CRASH) { -#ifdef CONFIG_TEE_BNXT_FW - return tee_bnxt_copy_coredump(buf, 0, dump->len); -#endif - } else { - return bnxt_get_coredump(bp, buf, &dump->len); - } - - return 0; + return bnxt_get_coredump(bp, dump->flag, buf, &dump->len); } static int bnxt_get_ts_info(struct net_device *dev, -- 2.18.1 --00000000000055f39305cf790df8 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQbQYJKoZIhvcNAQcCoIIQXjCCEFoCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg 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