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authorFelix Fietkau <nbd@openwrt.org>2013-12-16 21:49:14 +0100
committerJohannes Berg <johannes.berg@intel.com>2013-12-19 13:37:46 +0100
commita7022e65c68ad89d6eb64f21aa4831c3822403d4 (patch)
tree7f00a23cf59d36eac93e99435d78adf486a0d242 /include/net/mac80211.h
parent34a3740d6b392896b71e36cd5cd68837a8f94a5c (diff)
downloadop-kernel-dev-a7022e65c68ad89d6eb64f21aa4831c3822403d4.zip
op-kernel-dev-a7022e65c68ad89d6eb64f21aa4831c3822403d4.tar.gz
mac80211: add helper functions for tracking P2P NoA state
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'include/net/mac80211.h')
-rw-r--r--include/net/mac80211.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 531785f..f838af8 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -4652,4 +4652,51 @@ bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, struct sk_buff *skb,
int band, struct ieee80211_sta **sta);
+/**
+ * struct ieee80211_noa_data - holds temporary data for tracking P2P NoA state
+ *
+ * @next_tsf: TSF timestamp of the next absent state change
+ * @has_next_tsf: next absent state change event pending
+ *
+ * @absent: descriptor bitmask, set if GO is currently absent
+ *
+ * private:
+ *
+ * @count: count fields from the NoA descriptors
+ * @desc: adjusted data from the NoA
+ */
+struct ieee80211_noa_data {
+ u32 next_tsf;
+ bool has_next_tsf;
+
+ u8 absent;
+
+ u8 count[IEEE80211_P2P_NOA_DESC_MAX];
+ struct {
+ u32 start;
+ u32 duration;
+ u32 interval;
+ } desc[IEEE80211_P2P_NOA_DESC_MAX];
+};
+
+/**
+ * ieee80211_parse_p2p_noa - initialize NoA tracking data from P2P IE
+ *
+ * @attr: P2P NoA IE
+ * @data: NoA tracking data
+ * @tsf: current TSF timestamp
+ *
+ * Return: number of successfully parsed descriptors
+ */
+int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
+ struct ieee80211_noa_data *data, u32 tsf);
+
+/**
+ * ieee80211_update_p2p_noa - get next pending P2P GO absent state change
+ *
+ * @data: NoA tracking data
+ * @tsf: current TSF timestamp
+ */
+void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf);
+
#endif /* MAC80211_H */
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