From 03b64e888fd12740e9d4540d6f3d07e0070237fc Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 28 Dec 2012 21:05:49 +0000
Subject: mac80211: assume 2-byte aligning for 802.11 packets, slightly
 improves code size and performance

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34910 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../542-mac80211_optimize_wireless_struct.patch    | 71 ++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 package/mac80211/patches/542-mac80211_optimize_wireless_struct.patch

(limited to 'package/mac80211/patches/542-mac80211_optimize_wireless_struct.patch')

diff --git a/package/mac80211/patches/542-mac80211_optimize_wireless_struct.patch b/package/mac80211/patches/542-mac80211_optimize_wireless_struct.patch
new file mode 100644
index 000000000..6b62d12b4
--- /dev/null
+++ b/package/mac80211/patches/542-mac80211_optimize_wireless_struct.patch
@@ -0,0 +1,71 @@
+--- a/include/linux/ieee80211.h
++++ b/include/linux/ieee80211.h
+@@ -180,7 +180,7 @@ struct ieee80211_hdr {
+ 	u8 addr3[6];
+ 	__le16 seq_ctrl;
+ 	u8 addr4[6];
+-} __packed;
++} __packed __aligned(2);
+ 
+ struct ieee80211_hdr_3addr {
+ 	__le16 frame_control;
+@@ -189,7 +189,7 @@ struct ieee80211_hdr_3addr {
+ 	u8 addr2[6];
+ 	u8 addr3[6];
+ 	__le16 seq_ctrl;
+-} __packed;
++} __packed __aligned(2);
+ 
+ struct ieee80211_qos_hdr {
+ 	__le16 frame_control;
+@@ -199,7 +199,7 @@ struct ieee80211_qos_hdr {
+ 	u8 addr3[6];
+ 	__le16 seq_ctrl;
+ 	__le16 qos_ctrl;
+-} __packed;
++} __packed __aligned(2);
+ 
+ /**
+  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
+@@ -576,7 +576,7 @@ struct ieee80211s_hdr {
+ 	__le32 seqnum;
+ 	u8 eaddr1[6];
+ 	u8 eaddr2[6];
+-} __packed;
++} __packed __aligned(2);
+ 
+ /* Mesh flags */
+ #define MESH_FLAGS_AE_A4 	0x1
+@@ -830,7 +830,7 @@ struct ieee80211_mgmt {
+ 			} u;
+ 		} __packed action;
+ 	} u;
+-} __packed;
++} __packed __aligned(2);
+ 
+ /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
+ #define BSS_MEMBERSHIP_SELECTOR_HT_PHY	127
+@@ -861,20 +861,20 @@ struct ieee80211_rts {
+ 	__le16 duration;
+ 	u8 ra[6];
+ 	u8 ta[6];
+-} __packed;
++} __packed __aligned(2);
+ 
+ struct ieee80211_cts {
+ 	__le16 frame_control;
+ 	__le16 duration;
+ 	u8 ra[6];
+-} __packed;
++} __packed __aligned(2);
+ 
+ struct ieee80211_pspoll {
+ 	__le16 frame_control;
+ 	__le16 aid;
+ 	u8 bssid[6];
+ 	u8 ta[6];
+-} __packed;
++} __packed __aligned(2);
+ 
+ /* TDLS */
+ 
-- 
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