linux-kernel - Re: [PATCH 02/18] soc: qcom: create "include/soc/qcom/rmnet.h"

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Message-ID: <005ae8fb4ea9ba86fd0924b1719f1753@codeaurora.org>
Date:   Wed, 15 May 2019 19:09:52 -0600
From:   Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
To:     Alex Elder <elder@...aro.org>
Cc:     Arnd Bergmann <arnd@...db.de>, David Miller <davem@...emloft.net>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        stranche@...eaurora.org, YueHaibing <yuehaibing@...wei.com>,
        Joe Perches <joe@...ches.com>, syadagir@...eaurora.org,
        mjavid@...eaurora.org, evgreen@...omium.org, benchan@...gle.com,
        ejcaruso@...gle.com, abhishek.esse@...il.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/18] soc: qcom: create "include/soc/qcom/rmnet.h"

>>> +#ifndef _SOC_QCOM_RMNET_H_
>>> +#define _SOC_QCOM_RMNET_H_
>>> +
>>> +#include <linux/types.h>
>>> +
>>> +/* Header structure that precedes packets in ETH_P_MAP protocol */
>>> +struct rmnet_map_header {
>>> +       u8  pad_len             : 6;
>>> +       u8  reserved_bit        : 1;
>>> +       u8  cd_bit              : 1;
>>> +       u8  mux_id;
>>> +       __be16 pkt_len;
>>> +}  __aligned(1);
>> 
>> If we move this into include/soc/, I want the structure to be 
>> portable,
>> and avoid the bit fields. Please use mask/shift operations or the
>> include/linux/bits.h macros instead to make this work with big-endian
>> kernels.
> 
> Sure, I'll do that.  I did that everywhere else in the driver,
> but here I just tried to preserve the original code as I moved
> it.  I will update at least these structures, and all existing
> code (plus the IPA code) to use fields masks.
> 
> 					-Alex
>> 
>>      Arnd
>> 

Hi Alex

Could we instead have the rmnet header definition in
include/linux/if_rmnet.h

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