Subject: Re: [patch net-next v2 01/10] net: rename netdev_phys_port_id to more generic name

From: Jamal Hadi Salim <[email-masked]>
Date: Sun, 09 Nov 2014 22:35:12 -0500

On 11/09/14 05:51, Jiri Pirko wrote:
> So this can be reused for identification of other "items" as well.
>

>
> diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
> index 9dd0669..55dc4da 100644
> --- a/net/core/net-sysfs.c
> +++ b/net/core/net-sysfs.c
> @@ -387,7 +387,7 @@ static ssize_t phys_port_id_show(struct device *dev,
>   		return restart_syscall();
>
>   	if (dev_isalive(netdev)) {
> -		struct netdev_phys_port_id ppid;
> +		struct netdev_phys_item_id ppid;
>
>   		ret = dev_get_phys_port_id(netdev, &ppid);
>   		if (!ret)
> diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
> index a688268..1087c6d 100644
> --- a/net/core/rtnetlink.c
> +++ b/net/core/rtnetlink.c
> @@ -868,7 +868,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
>   	       + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
>   	       + rtnl_link_get_size(dev) /* IFLA_LINKINFO */
>   	       + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */
> -	       + nla_total_size(MAX_PHYS_PORT_ID_LEN); /* IFLA_PHYS_PORT_ID */
> +	       + nla_total_size(MAX_PHYS_ITEM_ID_LEN); /* IFLA_PHYS_PORT_ID */
>   }
>

[...]
>   static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
> @@ -952,7 +952,7 @@ static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev,
>   static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev)
>   {
>   	int err;
> -	struct netdev_phys_port_id ppid;
> +	struct netdev_phys_item_id ppid;
>
>   	err = dev_get_phys_port_id(dev, &ppid);
>   	if (err) {
> @@ -1196,7 +1196,7 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
>   	[IFLA_PROMISCUITY]	= { .type = NLA_U32 },
>   	[IFLA_NUM_TX_QUEUES]	= { .type = NLA_U32 },
>   	[IFLA_NUM_RX_QUEUES]	= { .type = NLA_U32 },
> -	[IFLA_PHYS_PORT_ID]	= { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
> +	[IFLA_PHYS_PORT_ID]	= { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
>   	[IFLA_CARRIER_CHANGES]	= { .type = NLA_U32 },  /* ignored */
>   };

wouldnt this just break an existing ABI? You may need to introduce a new 
attribute.

cheers,
jamal