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 X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 4C600C433F5 for ; Wed, 8 Sep 2021 18:28:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2366D6113D for ; Wed, 8 Sep 2021 18:28:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349790AbhIHS37 (ORCPT ); Wed, 8 Sep 2021 14:29:59 -0400 Received: from mail-pj1-f50.google.com ([209.85.216.50]:45824 "EHLO mail-pj1-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350369AbhIHS3a (ORCPT ); Wed, 8 Sep 2021 14:29:30 -0400 Received: by mail-pj1-f50.google.com with SMTP id f11-20020a17090aa78b00b0018e98a7cddaso2153970pjq.4 for ; Wed, 08 Sep 2021 11:28:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=VD7CgH6LmzPGFepmYwj/XJvv5e8RaOhEdaE4SiHDyRU=; b=bP/YX4jEHUDfkTnVk/UXHbvCDO1F0IXg/7H2BCdxSxJkHzpagSgss4jKResB5ZtGtR G8jPPmtnJfSwiRNy+eSXhYe1fdkyStV0XLRtzpWa/WI0I8ziipxHAsb3grALJwJkB+Zs UQ+jq8Gvod1jI+yoXEYuTR1YR3dS1HrBTMM9Eex891IK+H3FZQJVGuthwK+vIIl1al+T YmoGZ2O9ub9z3GesE/trQ1NxbdlkyPAzxhbiEv2rASKP6e/r1fZwY/qhWhwz3PiYoRiw Ds/qjUqEt+bi/es5gnNPvREW9EYyqkTgpqMf+3DuWdRGwpg6jNwRWsO2w5agyowCAdfX qHsg== X-Gm-Message-State: AOAM531L8pLwRJ0Zp+Mcv/VwqrdN5zl/3NrWOxjnncJWcBFAyiWjwPCa bfxG7rjIlvidNYQWKGOdrgA= X-Google-Smtp-Source: ABdhPJylWRgbJYJc848q6vjWv3mMkAkdpB/B6gtLvmD/rpt/qfJmocLB+FGe8v3MUqSZYC8ANbZpqw== X-Received: by 2002:a17:90a:1a4c:: with SMTP id 12mr5655857pjl.195.1631125699297; Wed, 08 Sep 2021 11:28:19 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:c0ea:8a04:6095:f44a]) by smtp.gmail.com with ESMTPSA id x10sm3273257pfj.174.2021.09.08.11.28.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Sep 2021 11:28:18 -0700 (PDT) Subject: Re: [PATCH v2 01/10] qla2xxx: Add support for mailbox passthru To: Nilesh Javali , martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, GR-QLogic-Storage-Upstream@marvell.com, djeffery@redhat.com, loberman@redhat.com References: <20210908164622.19240-1-njavali@marvell.com> <20210908164622.19240-2-njavali@marvell.com> From: Bart Van Assche Message-ID: <96a11a9b-fc55-0826-1970-b37b738c3c97@acm.org> Date: Wed, 8 Sep 2021 11:28:16 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20210908164622.19240-2-njavali@marvell.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org On 9/8/21 9:46 AM, Nilesh Javali wrote: > +struct qla_mbx_passthru { > + uint16_t reserved1[2]; > + uint16_t mbx_in[32]; > + uint16_t mbx_out[32]; > + uint32_t reserved2[16]; > +} __packed; Why does this data structure start with 4 reserved bytes? Thanks, Bart.