This patch adds the BlockAck frame structure as described in
802.11n specification section 7.2.1.8.
Signed-off-by: Christian Lamparter <chunkeey@xxxxxxxxxxxxxx>
---
I'm not sure if:
- everyone will be happy about ext. ieee80211_ba_cb structure?
- this structure should a part of ieee80211_bar?
---
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 49b1abd..cda0b23 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -747,10 +747,48 @@ struct ieee80211_bar {
__le16 start_seq_num;
} __attribute__((packed));
-/* 802.11 BAR control masks */
+/* 802.11 BA(R) control masks */
#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000
+#define IEEE80211_BAR_CTRL_MULTI_TID 0x0002
#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
+/**
+ * struct ieee80211_ba_cb - Compressed BlockAck variant
+ *
+ * This structure refers to "BA Information field" as
+ * described in 802.11n specification section 7.2.1.8.3
+ */
+struct ieee80211_ba_cb {
+ __le16 start_seq_num;
+ __u8 bitmap[8];
+} __attribute__((packed));
+
+/**
+ * struct ieee80211_ba - BlockAck frame
+ *
+ * This structure refers to "BlockAck frame" as
+ * described in 802.11n specification section 7.2.1.8.1
+ */
+struct ieee80211_ba {
+ __le16 frame_control;
+ __le16 duration;
+ __u8 ra[6];
+ __u8 ta[6];
+ __le16 control;
+ union {
+ struct {
+ __le16 start_seq_num;
+ __u8 bitmap[128];
+ } basic __attribute__((packed));
+
+ struct ieee80211_ba_cb cb;
+
+ struct {
+ __le16 per_tid;
+ struct ieee80211_ba_cb cb;
+ } cbmtid[0] __attribute__((packed));
+ } __attribute__((packed));
+} __attribute__((packed));
#define IEEE80211_HT_MCS_MASK_LEN 10
--
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