mac80211: Add HT helper functions

Some refactoring for IBSS HT.

Move HT info and capability IEs building code into separate functions.

Add function to get the channel type from an HT info IE.

Signed-off-by: Alexander Simon <an.alexsimon@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 28 deletions

diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 94472eb34d76..fab5092e3788 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -103,7 +103,6 @@ static void ieee80211_add_ht_ie(struct sk_buff *skb, const u8 *ht_info_ie,
         u8 *pos;
         u32 flags = channel->flags;
         u16 cap = sband->ht_cap.cap;
-        __le16 tmp;
 
         if (!sband->ht_cap.ht_supported)
                 return;
@@ -154,34 +153,8 @@ static void ieee80211_add_ht_ie(struct sk_buff *skb, const u8 *ht_info_ie,
         }
 
         /* reserve and fill IE */
-
         pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
-        *pos++ = WLAN_EID_HT_CAPABILITY;
-        *pos++ = sizeof(struct ieee80211_ht_cap);
-        memset(pos, 0, sizeof(struct ieee80211_ht_cap));
-
-        /* capability flags */
-        tmp = cpu_to_le16(cap);
-        memcpy(pos, &tmp, sizeof(u16));
-        pos += sizeof(u16);
-
-        /* AMPDU parameters */
-        *pos++ = sband->ht_cap.ampdu_factor |
-                 (sband->ht_cap.ampdu_density <<
-                        IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT);
-
-        /* MCS set */
-        memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
-        pos += sizeof(sband->ht_cap.mcs);
-
-        /* extended capabilities */
-        pos += sizeof(__le16);
-
-        /* BF capabilities */
-        pos += sizeof(__le32);
-
-        /* antenna selection */
-        pos += sizeof(u8);
+        ieee80211_ie_build_ht_cap(pos, sband, cap);
 }
 
 static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,