netdev - Re: [net-next PATCH v2] net: sched: cls_flower: Classify packets using port ranges

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Date:   Fri, 9 Nov 2018 20:55:22 -0800
From:   "Nambiar, Amritha" <amritha.nambiar@...el.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, jakub.kicinski@...ronome.com,
        sridhar.samudrala@...el.com, jhs@...atatu.com,
        xiyou.wangcong@...il.com, jiri@...nulli.us
Subject: Re: [net-next PATCH v2] net: sched: cls_flower: Classify packets
 using port ranges

On 11/8/2018 3:15 PM, David Miller wrote:
> From: Amritha Nambiar <amritha.nambiar@...el.com>
> Date: Wed, 07 Nov 2018 13:22:42 -0800
> 
>> diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h
>> index 401d0c1..b63c3cf 100644
>> --- a/include/uapi/linux/pkt_cls.h
>> +++ b/include/uapi/linux/pkt_cls.h
>> @@ -405,6 +405,11 @@ enum {
>>  	TCA_FLOWER_KEY_UDP_SRC,		/* be16 */
>>  	TCA_FLOWER_KEY_UDP_DST,		/* be16 */
>>  
>> +	TCA_FLOWER_KEY_PORT_SRC_MIN,	/* be16 */
>> +	TCA_FLOWER_KEY_PORT_SRC_MAX,	/* be16 */
>> +	TCA_FLOWER_KEY_PORT_DST_MIN,	/* be16 */
>> +	TCA_FLOWER_KEY_PORT_DST_MAX,	/* be16 */
>> +
>>  	TCA_FLOWER_FLAGS,
>>  	TCA_FLOWER_KEY_VLAN_ID,		/* be16 */
>>  	TCA_FLOWER_KEY_VLAN_PRIO,	/* u8   */
>> @@ -518,6 +523,8 @@ enum {
> 
> I don't think you can do this without breaking UAPI, this changes the
> value of TCA_FLOWER_FLAGS and all subsequent values in this
> enumeration.
> 

Will move the new fields to the bottom of the enum in v3.