netdev - Re: [PATCH net-next 3/4] net: switchdev: Add switchdev_port_bridge_getlink

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Message-ID: <20170109202817.GF3771@localhost.localdomain>
Date:   Mon, 9 Jan 2017 18:28:17 -0200
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        vivien.didelot@...oirfairelinux.com, andrew@...n.ch,
        jiri@...nulli.us
Subject: Re: [PATCH net-next 3/4] net: switchdev: Add
 switchdev_port_bridge_getlink_deferred

On Mon, Jan 09, 2017 at 12:13:19PM -0800, Florian Fainelli wrote:
> On 01/09/2017 12:11 PM, Marcelo Ricardo Leitner wrote:
> > On Mon, Jan 09, 2017 at 11:45:02AM -0800, Florian Fainelli wrote:
> >> Add switchdev_port_bridge_getlink_deferred() which does a deferred
> >> object dump operation, this is required for e.g: DSA switches which
> >> typically have sleeping I/O operations which is incompatible with being
> >> in atomic context obviously.
> >>
> >> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
> >> ---
> 
> >>  	struct switchdev_attr attr = {
> >>  		.orig_dev = dev,
> >> @@ -829,12 +841,49 @@ int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
> >>  	if (err && err != -EOPNOTSUPP)
> >>  		return err;
> >>  
> >> -	return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
> >> +	return ndo_dflt_bridge_getlink(skb, pid, seq, d, mode,
> > 
> > Was this s/dev/d/ by mistake?
> 
> No, it's not a mistake, it was made so that the function signature could
> be within 80 columns.

Right, but the change on the signature is on the chunk prior to this
one. Yet this one is not on the prototype and leads to:

.../linux/net/switchdev/switchdev.c: In function ‘__switchdev_port_bridge_getlink’:
.../linux/net/switchdev/switchdev.c:844:48: error: ‘d’ undeclared (first use in this function)
  return ndo_dflt_bridge_getlink(skb, pid, seq, d, mode,
                                                ^
.../linux/net/switchdev/switchdev.c:844:48: note: each undeclared identifier is reported only once for each function it appears in
.../linux/net/switchdev/switchdev.c:847:1: warning: control reaches end of non-void function [-Wreturn-type]
 }

  Marcelo