On Thu, 2015-12-17 at 10:20 +0100, Janusz Dziedzic wrote: > HW/driver should set NEED_ALIGNED4_SKBS flag in case require > aligned skbs to four-byte boundaries. > > Before we have to do memmove() in the driver before > pass this to HW and memmove() back in tx completion. > This patch allow to save CPU and skip such memmoves. > For each skb we called memmove(ieee80211_hdrsize()) twice.
IMHO this is pretty awful from a code complexity POV. You also forgot to update fast-xmit maximum header length. Note that we (iwlwifi) also kinda need this, but essentially solve it with the DMA engine. Can't ath9k do the same? johannes -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
