On 18 December 2015 at 13:07, Johannes Berg <johan...@sipsolutions.net> wrote: > On Fri, 2015-12-18 at 12:57 +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 call memmove(ieee80211_hdrsize()) twice. >> >> Currently this was tested with ath9k, both hw/sw crypt for >> tkip/ccmp. >> For sure more tests required (eg. fast path isn't used for >> ath9k STA, wep sw crypt). >> >> Signed-off-by: Janusz Dziedzic <janusz.dzied...@tieto.com> >> --- >> include/net/mac80211.h | 4 ++++ >> net/mac80211/debugfs.c | 1 + >> net/mac80211/ieee80211_i.h | 1 + >> net/mac80211/sta_info.h | 4 ++-- >> net/mac80211/tkip.c | 15 ++++++++++++--- >> net/mac80211/tx.c | 38 +++++++++++++++++++++++++++++++++--- >> -- >> net/mac80211/util.c | 7 ++++++- >> net/mac80211/wep.c | 11 ++++++----- >> net/mac80211/wep.h | 1 + >> net/mac80211/wpa.c | 14 ++++++-------- >> 10 files changed, 72 insertions(+), 24 deletions(-) >> > Btw, how can you get away without changing the status path? > Yes, this is still missed.
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