diff options
| author |   Felix Fietkau <nbd@nbd.name> | 2020-07-26 13:06:11 +0200 |
|---|---|---|
| committer |   Johannes Berg <johannes.berg@intel.com> | 2020-07-31 09:27:01 +0200 |
| commit | c5d1686b314ea44c5f210990dee05caf98cb068f (patch) | |
| tree | de492c17e1ea677642f89b4f79f6153e17bf7b92 /include/net | |
| parent | mac80211: parse radiotap header when selecting Tx queue (diff) | |
| download | wireguard-linux-c5d1686b314ea44c5f210990dee05caf98cb068f.tar.xz wireguard-linux-c5d1686b314ea44c5f210990dee05caf98cb068f.zip | |
mac80211: add a function for running rx without passing skbs to the stack
This can be used to run mac80211 rx processing on a batch of frames in NAPI
poll before passing them to the network stack in a large batch.
This can improve icache footprint, or it can be used to pass frames via
netif_receive_skb_list.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20200726110611.46886-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/mac80211.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 6e26f0ba6fd0..66e2bfd165e8 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -4361,6 +4361,31 @@ void ieee80211_free_hw(struct ieee80211_hw *hw); void ieee80211_restart_hw(struct ieee80211_hw *hw); /** + * ieee80211_rx_list - receive frame and store processed skbs in a list + * + * Use this function to hand received frames to mac80211. The receive + * 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 function may not be called in IRQ context. Calls to this function + * for a single hardware must be synchronized against each other. Calls to + * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be + * mixed for a single hardware. Must not run concurrently with + * ieee80211_tx_status() or ieee80211_tx_status_ni(). + * + * This function must be called with BHs disabled and RCU read lock + * + * @hw: the hardware this frame came in on + * @sta: the station the frame was received from, or %NULL + * @skb: the buffer to receive, owned by mac80211 after this call + * @list: the destination list + */ +void ieee80211_rx_list(struct ieee80211_hw *hw, struct ieee80211_sta *sta, + struct sk_buff *skb, struct list_head *list); + +/** * ieee80211_rx_napi - receive frame from NAPI context * * Use this function to hand received frames to mac80211. The receive |