mac80211: add A-MSDU tx support

[carl9170fw.git] / include / linux / ieee80211.h

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 633053047fbc070f4ee93815bfc58855ee2cb046..7bc9f831972294ed6205c18eab456ffa9a2236aa 100644 (file)
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -159,6 +159,9 @@ static inline u16 ieee80211_sn_sub(u16 sn1, u16 sn2)
 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 #define IEEE80211_MAX_FRAME_LEN                2352
 
+/* Maximal size of an A-MSDU that can be transported in a HT BA session */
+#define IEEE80211_MAX_MPDU_LEN_HT_BA           4095
+
 /* Maximal size of an A-MSDU */
 #define IEEE80211_MAX_MPDU_LEN_HT_3839         3839
 #define IEEE80211_MAX_MPDU_LEN_HT_7935         7935
@@ -644,6 +647,16 @@ static inline bool ieee80211_is_first_frag(__le16 seq_ctrl)
        return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 }
 
+/**
+ * ieee80211_is_frag - check if a frame is a fragment
+ * @hdr: 802.11 header of the frame
+ */
+static inline bool ieee80211_is_frag(struct ieee80211_hdr *hdr)
+{
+       return ieee80211_has_morefrags(hdr->frame_control) ||
+              hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG);
+}
+
 struct ieee80211s_hdr {
        u8 flags;
        u8 ttl;