linux-kernel - Re: [PATCH net-next v3 1/2] net: dsa: Use conduit and user terms

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Date:   Mon, 16 Oct 2023 09:41:35 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>,
        Florian Fainelli <florian.fainelli@...adcom.com>
Cc:     netdev@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        "open list:ARM/Mediatek SoC support" <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH net-next v3 1/2] net: dsa: Use conduit and user terms

On 10/16/23 06:23, Vladimir Oltean wrote:
> On Fri, Oct 13, 2023 at 02:52:50PM -0700, Florian Fainelli wrote:
>> Use more inclusive terms throughout the DSA subsystem by moving away
>> from "master" which is replaced by "conduit" and "slave" which is
>> replaced by "user". No functional changes.
>>
>> Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>
>> ---
>> diff --git a/Documentation/networking/dsa/configuration.rst b/Documentation/networking/dsa/configuration.rst
>> index d2934c40f0f1..e6c9719874b0 100644
>> --- a/Documentation/networking/dsa/configuration.rst
>> +++ b/Documentation/networking/dsa/configuration.rst
>> -Past this point, the DSA slave network devices get delivered regular Ethernet
>> +Past this point, the DSA user network devices get delivered regular Ethernet
>>   frames that can be processed by the networking stack.
>>   
>> -Slave network devices
>> +User network devices
>>   ---------------------
> 
> Please adjust section underline width.

Done.

> 
> Do we want a sentence in the documentation that clarifies that "user interfaces"
> and "conduit interfaces" used to be called "slave interfaces" and "master interfaces"
> (for 15 years), so that old time users don't get confused as to what happened?

Sure, we can do that.

> 
>> @@ -863,7 +863,7 @@ int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
>>   }
>>   
>>   /* This enforces legacy behavior for switch drivers which assume they can't
>> - * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0
>> + * receive VLAN configuration when enuserd to a bridge with vlan_filtering=0
> 
> when joining a bridge
> 
>>    */
>>   bool dsa_port_skip_vlan_configuration(struct dsa_port *dp)
>>   {
>> @@ -1057,7 +1057,7 @@ static int dsa_switch_event(struct notifier_block *nb,
>>   		err = dsa_switch_tag_8021q_vlan_del(ds, info);
>>   		break;
>>   	case DSA_NOTIFIER_MASTER_STATE_CHANGE:
> 
> As Stephen points out, maybe you want to change this notifier name as well.
> 
>> -		err = dsa_switch_master_state_change(ds, info);
>> +		err = dsa_switch_conduit_state_change(ds, info);
>>   		break;
>>   	default:
>>   		err = -EOPNOTSUPP;
>> diff --git a/net/dsa/tag.h b/net/dsa/tag.h
>> index 32d12f4a9d73..f6b9c73718df 100644
>> --- a/net/dsa/tag.h
>> +++ b/net/dsa/tag.h
>> @@ -9,7 +9,7 @@
>>   #include <net/dsa.h>
>>   
>>   #include "port.h"
>> -#include "slave.h"
>> +#include "user.h"
>>   
>>   struct dsa_tag_driver {
>>   	const struct dsa_device_ops *ops;
>> @@ -29,7 +29,7 @@ static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops)
>>   	return ops->needed_headroom + ops->needed_tailroom;
>>   }
>>   
>> -static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
>> +static inline struct net_device *dsa_conduit_find_user(struct net_device *dev,
>>   						       int device, int port)
> 
> Please adjust alignment.

checkpatch did not complain and my editor shows me the alignment appears 
to be proper, what am I missing?

> 
>>   {
>>   	struct dsa_port *cpu_dp = dev->dsa_ptr;
>> diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c
>> index cbdfc392f7e0..71b26ae6db39 100644
>> --- a/net/dsa/tag_8021q.c
>> +++ b/net/dsa/tag_8021q.c
>> @@ -468,10 +468,10 @@ struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
>>   }
>>   EXPORT_SYMBOL_GPL(dsa_8021q_xmit);
>>   
>> -struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *master,
>> +struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *conduit,
>>   						   int vbid)
> 
> Alignment.

Likewise.

> 
>>   {
>> -	struct dsa_port *cpu_dp = master->dsa_ptr;
>> +	struct dsa_port *cpu_dp = conduit->dsa_ptr;
>>   	struct dsa_switch_tree *dst = cpu_dp->dst;
>>   	struct dsa_port *dp;
>>   
>> diff --git a/net/dsa/tag_8021q.h b/net/dsa/tag_8021q.h
>> index b75cbaa028ef..41f7167ac520 100644
>> --- a/net/dsa/tag_8021q.h
>> +++ b/net/dsa/tag_8021q.h
>> @@ -16,7 +16,7 @@ struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
>>   void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id,
>>   		   int *vbid);
>>   
>> -struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *master,
>> +struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *conduit,
>>   						   int vbid);
> 
> Alignment.

Likewise.
-- 
Florian