mac80211: clean up IEEE80211_FC use

Really doesn't need to be defined four times.

Also, while at it, remove a useless macro (IEEE80211_ALIGN32_PAD)
and a function prototype for a function we don't actually have
(ieee80211_set_compression.)
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/ieee80211_i.h

@@ -35,9 +35,9 @@
 
 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
 
-struct ieee80211_local;
+#define IEEE80211_FC(type, subtype) cpu_to_le16(type | subtype)
 
-#define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
+struct ieee80211_local;
 
 /* Maximum number of broadcast/multicast frames to buffer when some of the
  * associated stations are using power saving. */
@@ -893,11 +893,8 @@ extern const struct iw_handler_def ieee80211_iw_handler_def;
 
 
 /* ieee80211_ioctl.c */
-int ieee80211_set_compression(struct ieee80211_local *local,
-			      struct net_device *dev, struct sta_info *sta);
 int ieee80211_set_freq(struct ieee80211_local *local, int freq);
 /* ieee80211_sta.c */
-#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
 void ieee80211_sta_timer(unsigned long data);
 void ieee80211_sta_work(struct work_struct *work);
 void ieee80211_sta_scan_work(struct work_struct *work);

net/mac80211/ieee80211_sta.c

@@ -57,8 +57,6 @@
 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
 
 
-#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
-
 #define ERP_INFO_USE_PROTECTION BIT(1)
 
 /* mgmt header + 1 byte action code */

net/mac80211/mesh_hwmp.c

@@ -10,8 +10,6 @@
 #include <asm/unaligned.h>
 #include "mesh.h"
 
-#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
-
 #define TEST_FRAME_LEN	8192
 #define MAX_METRIC	0xffffffff
 #define ARITH_SHIFT	8

net/mac80211/mesh_plink.c

@@ -18,7 +18,6 @@
 #define mpl_dbg(fmt, args...)	do { (void)(0); } while (0)
 #endif
 
-#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
 #define PLINK_GET_FRAME_SUBTYPE(p) (p)
 #define PLINK_GET_LLID(p) (p + 1)
 #define PLINK_GET_PLID(p) (p + 3)