On Fri, 2017-05-05 at 11:39 +0200, Johannes Berg wrote:
> On Fri, 2017-05-05 at 02:34 -0700, Joe Perches wrote:
> > On Fri, 2017-05-05 at 11:06 +0200, Johannes Berg wrote:
> > > > o Use explicit casts to proper types instead of casts to (void *)
> > > > and have the compiler do the implicit cast
> > >
> > > I see no advantage in this, why? All it does is make the code
> > > longer,
> > > and if anything changes, you have to change it in multiple places
> > > now.
> >
> > It makes use of the casted to types consistent within net/mac80211
> >
> > Here are the current uses. I changed iface .c to match the others.
>
> Well, OK. I'd rather change the others I guess, don't really see the
> point.
>
> > $ grep -P --include=*.[ch] "\((\w++\s*){1,2}\s*\*\).*skb->cb" net/mac80211
> > net/mac80211/iface.c: ra_tid = (void *)&skb->cb;
> > net/mac80211/iface.c: ra_tid = (void *)&skb->cb;
> > net/mac80211/iface.c: rx_agg = (void *)&skb->cb;
> > net/mac80211/iface.c: rx_agg = (void *)&skb->cb;
> > net/mac80211/agg-tx.c: ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
> > net/mac80211/agg-tx.c: ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
> > net/mac80211/agg-rx.c: rx_agg = (struct ieee80211_rx_agg *) &skb->cb;
>
> It's really just these three that are related to the iface.c ones
> anyway.
>
> > net/mac80211/mlme.c: struct ieee80211_rx_status *rx_status = (void
> > *) skb->cb;
> > net/mac80211/mlme.c: rx_status = (struct ieee80211_rx_status *)
> > skb->cb;
> >
>
> These should be using IEEE80211_SKB_RXCB(skb) :)
patches welcome... :)
