netdev - Re: [PATCH 1/6] net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG

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Date:	Fri, 19 Apr 2013 16:10:39 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	bhutchings@...arflare.com
Cc:	kaber@...sh.net, netdev@...r.kernel.org
Subject: Re: [PATCH 1/6] net: vlan: rename NETIF_F_HW_VLAN_* feature flags
 to NETIF_F_HW_VLAN_CTAG_*

From: Ben Hutchings <bhutchings@...arflare.com>
Date: Fri, 19 Apr 2013 21:07:17 +0100

> On Fri, 2013-04-19 at 14:04 +0200, Patrick McHardy wrote:
>> @@ -60,10 +60,10 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
>>  	[NETIF_F_IPV6_CSUM_BIT] =        "tx-checksum-ipv6",
>>  	[NETIF_F_HIGHDMA_BIT] =          "highdma",
>>  	[NETIF_F_FRAGLIST_BIT] =         "tx-scatter-gather-fraglist",
>> -	[NETIF_F_HW_VLAN_TX_BIT] =       "tx-vlan-hw-insert",
>> +	[NETIF_F_HW_VLAN_CTAG_TX_BIT] =  "tx-vlan-ctag-hw-insert",
>>  
>> -	[NETIF_F_HW_VLAN_RX_BIT] =       "rx-vlan-hw-parse",
>> -	[NETIF_F_HW_VLAN_FILTER_BIT] =   "rx-vlan-filter",
>> +	[NETIF_F_HW_VLAN_CTAG_RX_BIT] =  "rx-vlan-ctag-hw-parse",
>> +	[NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-ctag-filter",
>>  	[NETIF_F_VLAN_CHALLENGED_BIT] =  "vlan-challenged",
>>  	[NETIF_F_GSO_BIT] =              "tx-generic-segmentation",
>>  	[NETIF_F_LLTX_BIT] =             "tx-lockless",
> [...]
> 
> The only stable userland identifiers for these features are their names.
> So this is a userland ABI change and I don't think it's acceptable.

I think this is up for debate, but if others agree we can revert the
names and only put "stag" in the new ones.
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