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mac80211: let the driver reserve extra tailroom in beacons

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Can be used to add extra IEs (such as P2P NoA) without having to
reallocate the buffer.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau
2013-12-14 13:54:53 +01:00
committed by Johannes Berg
parent 7907c7d33c
commit 70dabeb74e
2 changed files with 10 additions and 3 deletions
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4
include/net/mac80211.h
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@@ -1613,6 +1613,9 @@ enum ieee80211_hw_flags {
* @extra_tx_headroom: headroom to reserve in each transmit skb
* for use by the driver (e.g. for transmit headers.)
*
* @extra_beacon_tailroom: tailroom to reserve in each beacon tx skb.
* Can be used by drivers to add extra IEs.
*
* @channel_change_time: time (in microseconds) it takes to change channels.
*
* @max_signal: Maximum value for signal (rssi) in RX information, used
@@ -1695,6 +1698,7 @@ struct ieee80211_hw {
void *priv;
u32 flags;
unsigned int extra_tx_headroom;
unsigned int extra_beacon_tailroom;
int channel_change_time;
int vif_data_size;
int sta_data_size;