Zhu Yi <yi.zhu@xxxxxxxxx> writes:
> Mac80211 drivers can now pass paged SKBs to mac80211 via
> ieee80211_rx{_irqsafe}. The implementation currently use
> skb_linearize() in a few places i.e. management frame
> handling, software decryption, defragmentation and A-MSDU
> process. We will optimize them one by one later.
[...]
> --- a/include/net/mac80211.h
> +++ b/include/net/mac80211.h
> @@ -1822,7 +1822,10 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw);
> * ieee80211_rx - receive frame
> *
> * Use this function to hand received frames to mac80211. The receive
> - * buffer in @skb must start with an IEEE 802.11 header.
> + * buffer in @skb must start with an IEEE 802.11 header. In case of a
> + * paged @skb is used, the driver is recommended to put the ieee80211
> + * header of the frame on the linear part of the @skb to avoid memory
> + * allocation and/or memcpy by the stack.
This is much better now. Thank you.
--
Kalle Valo
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