mac80211: optimize mac address comparisons to improve performance

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30763 3c298f89-4303-0410-b956-a3cf2f4a3e73
2024-11-19 04:49:42 +02:00 · 2012-03-01 15:13:30 +00:00 · 2012-03-01 15:13:30 +00:00 · 98a4f49247
commit 98a4f49247
parent ba66a4b961
2 changed files with 538 additions and 6 deletions
--- a/package/mac80211/patches/300-pending_work.patch
+++ b/package/mac80211/patches/300-pending_work.patch
@ -337,6 +337,21 @@
 			break;
 --- a/net/mac80211/rx.c
 +++ b/net/mac80211/rx.c
+@@ -489,12 +489,12 @@ ieee80211_rx_mesh_check(struct ieee80211
+ 			if (ieee80211_has_tods(hdr->frame_control) ||
+ 				!ieee80211_has_fromds(hdr->frame_control))
+ 				return RX_DROP_MONITOR;
+-			if (memcmp(hdr->addr3, dev_addr, ETH_ALEN) == 0)
+			if (compare_ether_addr(hdr->addr3, dev_addr) == 0)
+ 				return RX_DROP_MONITOR;
+ 		} else {
+ 			if (!ieee80211_has_a4(hdr->frame_control))
+ 				return RX_DROP_MONITOR;
+-			if (memcmp(hdr->addr4, dev_addr, ETH_ALEN) == 0)
+			if (compare_ether_addr(hdr->addr4, dev_addr) == 0)
+ 				return RX_DROP_MONITOR;
+ 		}
+ 	}
@@ -2282,6 +2282,7 @@ ieee80211_rx_h_action(struct ieee80211_r
 		    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
 		    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
@ -345,6 +360,15 @@
 		    sdata->vif.type != NL80211_IFTYPE_ADHOC)
 			break;
 
+@@ -2336,7 +2337,7 @@ ieee80211_rx_h_action(struct ieee80211_r
+ 			if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ 				break;
+ 
+-			if (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN))
+			if (compare_ether_addr(mgmt->bssid, sdata->u.mgd.bssid))
+ 				break;
+ 
+ 			goto queue;
@@ -2492,14 +2493,15 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_
 
 	if (!ieee80211_vif_is_mesh(&sdata->vif) &&
@ -384,7 +408,33 @@
 		/* should never get here */
 --- a/net/mac80211/sta_info.c
 +++ b/net/mac80211/sta_info.c
-@@ -1050,7 +1050,7 @@ static void ieee80211_send_null_response
+@@ -9,6 +9,7 @@
+ 
+ #include <linux/module.h>
+ #include <linux/init.h>
+#include <linux/etherdevice.h>
+ #include <linux/netdevice.h>
+ #include <linux/types.h>
+ #include <linux/slab.h>
+@@ -101,7 +102,7 @@ struct sta_info *sta_info_get(struct iee
+ 				    lockdep_is_held(&local->sta_mtx));
+ 	while (sta) {
+ 		if (sta->sdata == sdata &&
+-		    memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+		    compare_ether_addr(sta->sta.addr, addr) == 0)
+ 			break;
+ 		sta = rcu_dereference_check(sta->hnext,
+ 					    lockdep_is_held(&local->sta_mtx));
+@@ -124,7 +125,7 @@ struct sta_info *sta_info_get_bss(struct
+ 	while (sta) {
+ 		if ((sta->sdata == sdata ||
+ 		     (sta->sdata->bss && sta->sdata->bss == sdata->bss)) &&
+-		    memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+		    compare_ether_addr(sta->sta.addr, addr) == 0)
+ 			break;
+ 		sta = rcu_dereference_check(sta->hnext,
+ 					    lockdep_is_held(&local->sta_mtx));
+@@ -1050,7 +1051,7 @@ static void ieee80211_send_null_response
 	 * exchange. Also set EOSP to indicate this packet
 	 * ends the poll/service period.
 	 */
@ -393,7 +443,7 @@
 		       IEEE80211_TX_STATUS_EOSP |
 		       IEEE80211_TX_CTL_REQ_TX_STATUS;
 
-@@ -1177,7 +1177,7 @@ ieee80211_sta_ps_deliver_response(struct
+@@ -1177,7 +1178,7 @@ ieee80211_sta_ps_deliver_response(struct
 			 * STA may still remain is PS mode after this frame
 			 * exchange.
 			 */
@ -404,7 +454,15 @@
 			 * Use MoreData flag to indicate whether there are
 --- a/net/mac80211/sta_info.h
 +++ b/net/mac80211/sta_info.h
-@@ -31,7 +31,6 @@
+@@ -14,6 +14,7 @@
+ #include <linux/if_ether.h>
+ #include <linux/workqueue.h>
+ #include <linux/average.h>
+#include <linux/etherdevice.h>
+ #include "key.h"
+ 
+ /**
+@@ -31,7 +32,6 @@
  * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble
  *	frames.
  * @WLAN_STA_WME: Station is a QoS-STA.
@ -412,7 +470,7 @@
  * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
  *	IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
  *	frame to this station is transmitted.
-@@ -62,7 +61,6 @@ enum ieee80211_sta_info_flags {
+@@ -62,7 +62,6 @@ enum ieee80211_sta_info_flags {
 	WLAN_STA_AUTHORIZED,
 	WLAN_STA_SHORT_PREAMBLE,
 	WLAN_STA_WME,
@ -420,6 +478,15 @@
 	WLAN_STA_CLEAR_PS_FILT,
 	WLAN_STA_MFP,
 	WLAN_STA_BLOCK_BA,
+@@ -489,7 +488,7 @@ void for_each_sta_info_type_check(struct
+ 		nxt = _sta ? rcu_dereference(_sta->hnext) : NULL	\
+ 	     )								\
+ 	/* compare address and run code only if it matches */		\
+-	if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0)
+	if (compare_ether_addr(_sta->sta.addr, (_addr)) == 0)
+ 
+ /*
+  * Get STA info by index, BROKEN!
 --- a/net/mac80211/tx.c
 +++ b/net/mac80211/tx.c
@@ -448,18 +448,23 @@ ieee80211_tx_h_unicast_ps_buf(struct iee
@ -463,3 +530,468 @@
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
 	u8 ssid_len, ie_len;
 	u8 *ie;
+--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
+@@ -66,7 +66,7 @@ static void __ieee80211_sta_join_ibss(st
+ 	skb_reset_tail_pointer(skb);
+ 	skb_reserve(skb, sdata->local->hw.extra_tx_headroom);
+ 
+-	if (memcmp(ifibss->bssid, bssid, ETH_ALEN))
+	if (compare_ether_addr(ifibss->bssid, bssid))
+ 		sta_info_flush(sdata->local, sdata);
+ 
+ 	/* if merging, indicate to driver that we leave the old IBSS */
+@@ -403,7 +403,7 @@ static void ieee80211_rx_bss_info(struct
+ 		return;
+ 
+ 	if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
+-	    memcmp(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) {
+	    compare_ether_addr(mgmt->bssid, sdata->u.ibss.bssid) == 0) {
+ 
+ 		rcu_read_lock();
+ 		sta = sta_info_get(sdata, mgmt->sa);
+@@ -508,7 +508,7 @@ static void ieee80211_rx_bss_info(struct
+ 		goto put_bss;
+ 
+ 	/* same BSSID */
+-	if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0)
+	if (compare_ether_addr(cbss->bssid, sdata->u.ibss.bssid) == 0)
+ 		goto put_bss;
+ 
+ 	if (rx_status->flag & RX_FLAG_MACTIME_MPDU) {
+@@ -831,8 +831,8 @@ static void ieee80211_rx_mgmt_probe_req(
+ 	if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da))
+ 		return;
+ 
+-	if (memcmp(mgmt->bssid, ifibss->bssid, ETH_ALEN) != 0 &&
+-	    memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
+	if (compare_ether_addr(mgmt->bssid, ifibss->bssid) != 0 &&
+	    !is_broadcast_ether_addr(mgmt->bssid))
+ 		return;
+ 
+ 	end = ((u8 *) mgmt) + len;
+--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
+@@ -204,7 +204,7 @@ int mesh_rmc_check(u8 *sa, struct ieee80
+ 			kmem_cache_free(rm_cache, p);
+ 			--entries;
+ 		} else if ((seqnum == p->seqnum) &&
+-			   (memcmp(sa, p->sa, ETH_ALEN) == 0))
+			   (compare_ether_addr(sa, p->sa) == 0))
+ 			return -1;
+ 	}
+ 
+--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
+@@ -8,6 +8,7 @@
+  */
+ 
+ #include <linux/slab.h>
+#include <linux/etherdevice.h>
+ #include <asm/unaligned.h>
+ #include "wme.h"
+ #include "mesh.h"
+@@ -419,7 +420,7 @@ static u32 hwmp_route_info_get(struct ie
+ 		new_metric = MAX_METRIC;
+ 	exp_time = TU_TO_EXP_TIME(orig_lifetime);
+ 
+-	if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0) {
+	if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0) {
+ 		/* This MP is the originator, we are not interested in this
+ 		 * frame, except for updating transmitter's path info.
+ 		 */
+@@ -469,7 +470,7 @@ static u32 hwmp_route_info_get(struct ie
+ 
+ 	/* Update and check transmitter routing info */
+ 	ta = mgmt->sa;
+-	if (memcmp(orig_addr, ta, ETH_ALEN) == 0)
+	if (compare_ether_addr(orig_addr, ta) == 0)
+ 		fresh_info = false;
+ 	else {
+ 		fresh_info = true;
+@@ -529,7 +530,7 @@ static void hwmp_preq_frame_process(stru
+ 
+ 	mhwmp_dbg("received PREQ from %pM", orig_addr);
+ 
+-	if (memcmp(target_addr, sdata->vif.addr, ETH_ALEN) == 0) {
+	if (compare_ether_addr(target_addr, sdata->vif.addr) == 0) {
+ 		mhwmp_dbg("PREQ is for us");
+ 		forward = false;
+ 		reply = true;
+@@ -624,7 +625,7 @@ static void hwmp_prep_frame_process(stru
+ 	mhwmp_dbg("received PREP from %pM", PREP_IE_ORIG_ADDR(prep_elem));
+ 
+ 	orig_addr = PREP_IE_ORIG_ADDR(prep_elem);
+-	if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0)
+	if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0)
+ 		/* destination, no forwarding required */
+ 		return;
+ 
+@@ -694,10 +695,12 @@ static void hwmp_perr_frame_process(stru
+ 	rcu_read_lock();
+ 	mpath = mesh_path_lookup(target_addr, sdata);
+ 	if (mpath) {
+		struct sta_info *sta;
+
+ 		spin_lock_bh(&mpath->state_lock);
+		sta = next_hop_deref_protected(mpath);
+ 		if (mpath->flags & MESH_PATH_ACTIVE &&
+-		    memcmp(ta, next_hop_deref_protected(mpath)->sta.addr,
+-							ETH_ALEN) == 0 &&
+		    compare_ether_addr(ta, sta->sta.addr) == 0 &&
+ 		    (!(mpath->flags & MESH_PATH_SN_VALID) ||
+ 		    SN_GT(target_sn, mpath->sn))) {
+ 			mpath->flags &= ~MESH_PATH_ACTIVE;
+@@ -739,7 +742,7 @@ static void hwmp_rann_frame_process(stru
+ 	metric = rann->rann_metric;
+ 
+ 	/*  Ignore our own RANNs */
+-	if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0)
+	if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0)
+ 		return;
+ 
+ 	mhwmp_dbg("received RANN from %pM (is_gate=%d)", orig_addr,
+@@ -1064,7 +1067,7 @@ int mesh_nexthop_lookup(struct sk_buff *
+ 	if (time_after(jiffies,
+ 		       mpath->exp_time -
+ 		       msecs_to_jiffies(sdata->u.mesh.mshcfg.path_refresh_time)) &&
+-	    !memcmp(sdata->vif.addr, hdr->addr4, ETH_ALEN) &&
+	    !compare_ether_addr(sdata->vif.addr, hdr->addr4) &&
+ 	    !(mpath->flags & MESH_PATH_RESOLVING) &&
+ 	    !(mpath->flags & MESH_PATH_FIXED))
+ 		mesh_queue_preq(mpath, PREQ_Q_F_START | PREQ_Q_F_REFRESH);
+--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
+@@ -350,7 +350,7 @@ static struct mesh_path *mpath_lookup(st
+ 	hlist_for_each_entry_rcu(node, n, bucket, list) {
+ 		mpath = node->mpath;
+ 		if (mpath->sdata == sdata &&
+-				memcmp(dst, mpath->dst, ETH_ALEN) == 0) {
+				compare_ether_addr(dst, mpath->dst) == 0) {
+ 			if (MPATH_EXPIRED(mpath)) {
+ 				spin_lock_bh(&mpath->state_lock);
+ 				mpath->flags &= ~MESH_PATH_ACTIVE;
+@@ -525,7 +525,7 @@ int mesh_path_add(u8 *dst, struct ieee80
+ 	int err = 0;
+ 	u32 hash_idx;
+ 
+-	if (memcmp(dst, sdata->vif.addr, ETH_ALEN) == 0)
+	if (compare_ether_addr(dst, sdata->vif.addr) == 0)
+ 		/* never add ourselves as neighbours */
+ 		return -ENOTSUPP;
+ 
+@@ -566,7 +566,8 @@ int mesh_path_add(u8 *dst, struct ieee80
+ 	err = -EEXIST;
+ 	hlist_for_each_entry(node, n, bucket, list) {
+ 		mpath = node->mpath;
+-		if (mpath->sdata == sdata && memcmp(dst, mpath->dst, ETH_ALEN) == 0)
+		if (mpath->sdata == sdata &&
+		    compare_ether_addr(dst, mpath->dst) == 0)
+ 			goto err_exists;
+ 	}
+ 
+@@ -657,7 +658,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struc
+ 	int err = 0;
+ 	u32 hash_idx;
+ 
+-	if (memcmp(dst, sdata->vif.addr, ETH_ALEN) == 0)
+	if (compare_ether_addr(dst, sdata->vif.addr) == 0)
+ 		/* never add ourselves as neighbours */
+ 		return -ENOTSUPP;
+ 
+@@ -694,7 +695,8 @@ int mpp_path_add(u8 *dst, u8 *mpp, struc
+ 	err = -EEXIST;
+ 	hlist_for_each_entry(node, n, bucket, list) {
+ 		mpath = node->mpath;
+-		if (mpath->sdata == sdata && memcmp(dst, mpath->dst, ETH_ALEN) == 0)
+		if (mpath->sdata == sdata &&
+		    compare_ether_addr(dst, mpath->dst) == 0)
+ 			goto err_exists;
+ 	}
+ 
+@@ -887,7 +889,7 @@ int mesh_path_del(u8 *addr, struct ieee8
+ 	hlist_for_each_entry(node, n, bucket, list) {
+ 		mpath = node->mpath;
+ 		if (mpath->sdata == sdata &&
+-		    memcmp(addr, mpath->dst, ETH_ALEN) == 0) {
+		    compare_ether_addr(addr, mpath->dst) == 0) {
+ 			__mesh_path_del(tbl, node);
+ 			goto enddel;
+ 		}
+--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
+@@ -1812,7 +1812,7 @@ ieee80211_rx_mgmt_auth(struct ieee80211_
+ 
+ 	memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
+ 
+-	if (memcmp(bssid, mgmt->bssid, ETH_ALEN))
+	if (compare_ether_addr(bssid, mgmt->bssid))
+ 		return RX_MGMT_NONE;
+ 
+ 	auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+@@ -1893,7 +1893,7 @@ ieee80211_rx_mgmt_deauth(struct ieee8021
+ 		return RX_MGMT_NONE;
+ 
+ 	if (!ifmgd->associated ||
+-	    memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN))
+	    compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
+ 		return RX_MGMT_NONE;
+ 
+ 	bssid = ifmgd->associated->bssid;
+@@ -1925,7 +1925,7 @@ ieee80211_rx_mgmt_disassoc(struct ieee80
+ 		return RX_MGMT_NONE;
+ 
+ 	if (!ifmgd->associated ||
+-	    memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN))
+	    compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
+ 		return RX_MGMT_NONE;
+ 
+ 	reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+@@ -2190,7 +2190,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee
+ 
+ 	if (!assoc_data)
+ 		return RX_MGMT_NONE;
+-	if (memcmp(assoc_data->bss->bssid, mgmt->bssid, ETH_ALEN))
+	if (compare_ether_addr(assoc_data->bss->bssid, mgmt->bssid))
+ 		return RX_MGMT_NONE;
+ 
+ 	/*
+@@ -2278,8 +2278,8 @@ static void ieee80211_rx_bss_info(struct
+ 	bool need_ps = false;
+ 
+ 	if (sdata->u.mgd.associated &&
+-	    memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid,
+-		   ETH_ALEN) == 0) {
+	    compare_ether_addr(mgmt->bssid, sdata->u.mgd.associated->bssid)
+	    == 0) {
+ 		bss = (void *)sdata->u.mgd.associated->priv;
+ 		/* not previously set so we may need to recalc */
+ 		need_ps = !bss->dtim_period;
+@@ -2334,7 +2334,7 @@ static void ieee80211_rx_mgmt_probe_resp
+ 
+ 	ASSERT_MGD_MTX(ifmgd);
+ 
+-	if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN))
+	if (compare_ether_addr(mgmt->da, sdata->vif.addr))
+ 		return; /* ignore ProbeResp to foreign address */
+ 
+ 	baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
+@@ -2347,11 +2347,12 @@ static void ieee80211_rx_mgmt_probe_resp
+ 	ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
+ 
+ 	if (ifmgd->associated &&
+-	    memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0)
+	    compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid) == 0)
+ 		ieee80211_reset_ap_probe(sdata);
+ 
+ 	if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
+-	    memcmp(mgmt->bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN) == 0) {
+	    compare_ether_addr(mgmt->bssid, ifmgd->auth_data->bss->bssid)
+	    == 0) {
+ 		/* got probe response, continue with auth */
+ 		printk(KERN_DEBUG "%s: direct probe responded\n", sdata->name);
+ 		ifmgd->auth_data->tries = 0;
+@@ -2408,7 +2409,8 @@ static void ieee80211_rx_mgmt_beacon(str
+ 		return;
+ 
+ 	if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon &&
+-	    memcmp(mgmt->bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN) == 0) {
+	    compare_ether_addr(mgmt->bssid, ifmgd->assoc_data->bss->bssid)
+	    == 0) {
+ 		ieee802_11_parse_elems(mgmt->u.beacon.variable,
+ 				       len - baselen, &elems);
+ 
+@@ -2423,7 +2425,7 @@ static void ieee80211_rx_mgmt_beacon(str
+ 	}
+ 
+ 	if (!ifmgd->associated ||
+-	    memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN))
+	    compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
+ 		return;
+ 	bssid = ifmgd->associated->bssid;
+ 
+@@ -3285,7 +3287,7 @@ int ieee80211_mgd_assoc(struct ieee80211
+ 		bool match;
+ 
+ 		/* keep sta info, bssid if matching */
+-		match = memcmp(ifmgd->bssid, req->bss->bssid, ETH_ALEN) == 0;
+		match = compare_ether_addr(ifmgd->bssid, req->bss->bssid) == 0;
+ 		ieee80211_destroy_auth_data(sdata, match);
+ 	}
+ 
+@@ -3407,7 +3409,7 @@ int ieee80211_mgd_assoc(struct ieee80211
+ 			goto err_clear;
+ 		}
+ 	} else
+-		WARN_ON_ONCE(memcmp(ifmgd->bssid, req->bss->bssid, ETH_ALEN));
+		WARN_ON_ONCE(compare_ether_addr(ifmgd->bssid, req->bss->bssid));
+ 
+ 	if (!bss->dtim_period &&
+ 	    sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {
+@@ -3448,7 +3450,7 @@ int ieee80211_mgd_deauth(struct ieee8021
+ 	mutex_lock(&ifmgd->mtx);
+ 
+ 	if (ifmgd->associated &&
+-	    memcmp(ifmgd->associated->bssid, req->bssid, ETH_ALEN) == 0) {
+	    compare_ether_addr(ifmgd->associated->bssid, req->bssid) == 0) {
+ 		ieee80211_set_disassoc(sdata, false, true);
+ 		assoc_bss = true;
+ 	} else if (ifmgd->auth_data) {
+--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
+@@ -10,6 +10,7 @@
+  */
+ 
+ #include <linux/export.h>
+#include <linux/etherdevice.h>
+ #include <net/mac80211.h>
+ #include <asm/unaligned.h>
+ #include "ieee80211_i.h"
+@@ -377,7 +378,7 @@ void ieee80211_tx_status(struct ieee8021
+ 
+ 	for_each_sta_info(local, hdr->addr1, sta, tmp) {
+ 		/* skip wrong virtual interface */
+-		if (memcmp(hdr->addr2, sta->sdata->vif.addr, ETH_ALEN))
+		if (compare_ether_addr(hdr->addr2, sta->sdata->vif.addr))
+ 			continue;
+ 
+ 		if (info->flags & IEEE80211_TX_STATUS_EOSP)
+--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
+@@ -6,6 +6,7 @@
+ 
+ #include <linux/kernel.h>
+ #include <linux/module.h>
+#include <linux/etherdevice.h>
+ #include <linux/netdevice.h>
+ #include <linux/nl80211.h>
+ #include <linux/slab.h>
+@@ -100,7 +101,7 @@ void __cfg80211_send_deauth(struct net_d
+ 	ASSERT_WDEV_LOCK(wdev);
+ 
+ 	if (wdev->current_bss &&
+-	    memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
+	    compare_ether_addr(wdev->current_bss->pub.bssid, bssid) == 0) {
+ 		cfg80211_unhold_bss(wdev->current_bss);
+ 		cfg80211_put_bss(&wdev->current_bss->pub);
+ 		wdev->current_bss = NULL;
+@@ -115,7 +116,7 @@ void __cfg80211_send_deauth(struct net_d
+ 
+ 		reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+ 
+-		from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
+		from_ap = compare_ether_addr(mgmt->sa, dev->dev_addr) != 0;
+ 		__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
+ 	} else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
+ 		__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
+@@ -154,7 +155,7 @@ void __cfg80211_send_disassoc(struct net
+ 		return;
+ 
+ 	if (wdev->current_bss &&
+-	    memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
+	    compare_ether_addr(wdev->current_bss->pub.bssid, bssid) == 0) {
+ 		cfg80211_sme_disassoc(dev, wdev->current_bss);
+ 		cfg80211_unhold_bss(wdev->current_bss);
+ 		cfg80211_put_bss(&wdev->current_bss->pub);
+@@ -165,7 +166,7 @@ void __cfg80211_send_disassoc(struct net
+ 
+ 	reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+ 
+-	from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
+	from_ap = compare_ether_addr(mgmt->sa, dev->dev_addr) != 0;
+ 	__cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
+ }
+ EXPORT_SYMBOL(__cfg80211_send_disassoc);
+@@ -285,7 +286,7 @@ int __cfg80211_mlme_auth(struct cfg80211
+ 			return -EINVAL;
+ 
+ 	if (wdev->current_bss &&
+-	    memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
+	    compare_ether_addr(bssid, wdev->current_bss->pub.bssid) == 0)
+ 		return -EALREADY;
+ 
+ 	memset(&req, 0, sizeof(req));
+@@ -362,7 +363,7 @@ int __cfg80211_mlme_assoc(struct cfg8021
+ 	memset(&req, 0, sizeof(req));
+ 
+ 	if (wdev->current_bss && prev_bssid &&
+-	    memcmp(wdev->current_bss->pub.bssid, prev_bssid, ETH_ALEN) == 0) {
+	    compare_ether_addr(wdev->current_bss->pub.bssid, prev_bssid) == 0) {
+ 		/*
+ 		 * Trying to reassociate: Allow this to proceed and let the old
+ 		 * association to be dropped when the new one is completed.
+@@ -446,7 +447,8 @@ int __cfg80211_mlme_deauth(struct cfg802
+ 
+ 	if (local_state_change) {
+ 		if (wdev->current_bss &&
+-		    memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
+		    compare_ether_addr(wdev->current_bss->pub.bssid, bssid)
+		    == 0) {
+ 			cfg80211_unhold_bss(wdev->current_bss);
+ 			cfg80211_put_bss(&wdev->current_bss->pub);
+ 			wdev->current_bss = NULL;
+@@ -495,7 +497,7 @@ static int __cfg80211_mlme_disassoc(stru
+ 	req.local_state_change = local_state_change;
+ 	req.ie = ie;
+ 	req.ie_len = ie_len;
+-	if (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0)
+	if (compare_ether_addr(wdev->current_bss->pub.bssid, bssid) == 0)
+ 		req.bss = &wdev->current_bss->pub;
+ 	else
+ 		return -ENOTCONN;
+@@ -758,8 +760,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
+ 				break;
+ 			}
+ 
+-			if (memcmp(wdev->current_bss->pub.bssid,
+-				   mgmt->bssid, ETH_ALEN)) {
+			if (compare_ether_addr(wdev->current_bss->pub.bssid,
+					       mgmt->bssid)) {
+ 				err = -ENOTCONN;
+ 				break;
+ 			}
+@@ -772,8 +774,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
+ 				break;
+ 
+ 			/* for station, check that DA is the AP */
+-			if (memcmp(wdev->current_bss->pub.bssid,
+-				   mgmt->da, ETH_ALEN)) {
+			if (compare_ether_addr(wdev->current_bss->pub.bssid,
+					       mgmt->da)) {
+ 				err = -ENOTCONN;
+ 				break;
+ 			}
+@@ -781,11 +783,11 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
+ 		case NL80211_IFTYPE_AP:
+ 		case NL80211_IFTYPE_P2P_GO:
+ 		case NL80211_IFTYPE_AP_VLAN:
+-			if (memcmp(mgmt->bssid, dev->dev_addr, ETH_ALEN))
+			if (compare_ether_addr(mgmt->bssid, dev->dev_addr))
+ 				err = -EINVAL;
+ 			break;
+ 		case NL80211_IFTYPE_MESH_POINT:
+-			if (memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN)) {
+			if (compare_ether_addr(mgmt->sa, mgmt->bssid)) {
+ 				err = -EINVAL;
+ 				break;
+ 			}
+@@ -804,7 +806,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
+ 			return err;
+ 	}
+ 
+-	if (memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0)
+	if (compare_ether_addr(mgmt->sa, dev->dev_addr) != 0)
+ 		return -EINVAL;
+ 
+ 	/* Transmit the Action frame as requested by user space */
+--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
+@@ -378,7 +378,7 @@ static int cmp_bss_core(struct cfg80211_
+ 			       b->len_information_elements);
+ 	}
+ 
+-	return memcmp(a->bssid, b->bssid, ETH_ALEN);
+	return compare_ether_addr(a->bssid, b->bssid);
+ }
+ 
+ static int cmp_bss(struct cfg80211_bss *a,
--- a/package/mac80211/patches/551-ath9k_per_chain_signal_strength.patch
+++ b/package/mac80211/patches/551-ath9k_per_chain_signal_strength.patch
@ -23,7 +23,7 @@
 	int antenna;
 --- a/net/mac80211/sta_info.h
 +++ b/net/mac80211/sta_info.h
-@@ -312,6 +312,11 @@ struct sta_info {
+@@ -313,6 +313,11 @@ struct sta_info {
 	unsigned long rx_dropped;
 	int last_signal;
 	struct ewma avg_signal;
@ -67,7 +67,7 @@
 	 * exchange sequence.
 --- a/net/mac80211/sta_info.c
 +++ b/net/mac80211/sta_info.c
-@@ -255,6 +255,8 @@ struct sta_info *sta_info_alloc(struct i
+@@ -256,6 +256,8 @@ struct sta_info *sta_info_alloc(struct i
 	do_posix_clock_monotonic_gettime(&uptime);
 	sta->last_connected = uptime.tv_sec;
 	ewma_init(&sta->avg_signal, 1024, 8);