netdev - Re: [PATCH 24/38] cls_u32: Convert tc_u_common->handle

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Date:   Wed, 21 Aug 2019 14:38:46 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH 24/38] cls_u32: Convert tc_u_common->handle_idr to
 XArray

On Wed, 21 Aug 2019 14:25:42 -0700, Matthew Wilcox wrote:
> On Wed, Aug 21, 2019 at 02:13:08PM -0700, Jakub Kicinski wrote:
> > On Tue, 20 Aug 2019 15:32:45 -0700, Matthew Wilcox wrote:  
> > > @@ -305,8 +306,12 @@ static void *u32_get(struct tcf_proto *tp, u32 handle)
> > >  /* Protected by rtnl lock */
> > >  static u32 gen_new_htid(struct tc_u_common *tp_c, struct tc_u_hnode *ptr)
> > >  {
> > > -	int id = idr_alloc_cyclic(&tp_c->handle_idr, ptr, 1, 0x7FF, GFP_KERNEL);
> > > -	if (id < 0)
> > > +	int err;
> > > +	u32 id;
> > > +
> > > +	err = xa_alloc_cyclic(&tp_c->ht_xa, &id, ptr, XA_LIMIT(0, 0x7ff),
> > > +			&tp_c->ht_next, GFP_KERNEL);  
> > 
> > nit: indentation seems off here and a couple of other places.  
> 
> what indentation rule does the networking stack use?  i just leave the
> cursor where my editor puts it, which seems to be two tabs.

Oh, match opening bracket..

	err = xa_alloc_cyclic(&tp_c->ht_xa, &id, ptr, XA_LIMIT(0, 0x7ff),
			      &tp_c->ht_next, GFP_KERNEL);