On Fri, 2012-09-07 at 08:24 -0700, Ben Greear wrote: > On 09/07/2012 07:54 AM, Felix Fietkau wrote: > > skb->dev might contain a stale reference to a device that was already > > deleted, and using it unchecked can lead to invalid pointer accesses. > > Since this is only used for nl80211 tx, iterate over active interfaces > > to find a match for skb->dev, and discard the tx status if the device > > is gone. > > Nasty performance hit if we have lots of virtual > interfaces, eh? Maybe some sort of ref-counting > would be better? Or a hashed lookup on the netdev > pointer/token? As Felix also pointed out to me, no. Frames that need to go to nl80211 should be rare, this isn't the common case. johannes -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
