On Wed, 2013-02-20 at 11:17 -0800, Eric Dumazet wrote: > On Wed, 2013-02-20 at 19:16 +0100, Johannes Berg wrote: > > > Yes and no. The current code doesn't pull in much data, not even the IP > > header, so worst case it copies 14 bytes (ethernet header) in mac80211 > > to obtain alignment. By pulling in everything here, it later has to copy > > everything again later to obtain alignment. > > Can you give me pointers to the code doing that ? Sure: net/mac80211/rx.c ~line 1900, look for #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS. > On x86 we should not doing anything. We don't do anything if CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is defined. 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
