From: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Date: Sun, 31 May 2015 18:19:21 +0000 (+0200)
Subject: staging: rtl8192e: Make ethernet addresses properly aligned
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=06c111072892d3f5fed9d73d1becb59d3f33410b;p=openwrt%2Fstaging%2Fblogic.git

staging: rtl8192e: Make ethernet addresses properly aligned

Reorder ethernet addresses allocated on stack or in non-packed
structures to keep them aligned(2).
Use ETH_ALEN as array length in places where it was hardcoded to 6.

Alignment verified using pahole where possible and target-tested
with BUG_ON() trap in ether_addr_copy.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c b/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c
index aad5cc95c341..926fca790895 100644
--- a/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c
+++ b/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c
@@ -316,12 +316,11 @@ void rtl8192e_SetHwReg(struct net_device *dev, u8 variable, u8 *val)
 static void rtl8192_read_eeprom_info(struct net_device *dev)
 {
 	struct r8192_priv *priv = rtllib_priv(dev);
-
+	const u8 bMac_Tmp_Addr[ETH_ALEN] = {0x00, 0xe0, 0x4c, 0x00, 0x00, 0x01};
 	u8 tempval;
 	u8 ICVer8192, ICVer8256;
 	u16 i, usValue, IC_Version;
 	u16 EEPROMId;
-	u8 bMac_Tmp_Addr[6] = {0x00, 0xe0, 0x4c, 0x00, 0x00, 0x01};
 
 	RT_TRACE(COMP_INIT, "====> rtl8192_read_eeprom_info\n");
 
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
index 6d60ac47c8c5..6f339cd7ae3e 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
@@ -2573,8 +2573,7 @@ static int rtl8192_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	int ret = -1;
 	struct rtllib_device *ieee = priv->rtllib;
 	u32 key[4];
-	u8 broadcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-	u8 zero_addr[6] = {0};
+	const u8 broadcast_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 	struct iw_point *p = &wrq->u.data;
 	struct ieee_param *ipw = NULL;
 
@@ -2611,8 +2610,7 @@ static int rtl8192_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 				}
 
 				if (ieee->pairwise_key_type) {
-					if (memcmp(ieee->ap_mac_addr, zero_addr,
-					    6) == 0)
+					if (is_zero_ether_addr(ieee->ap_mac_addr))
 						ieee->iw_mode = IW_MODE_ADHOC;
 					memcpy((u8 *)key, ipw->u.crypt.key, 16);
 					EnableHWSecurityConfig8192(dev);
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
index 8d6a109e023b..43702df399de 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
@@ -987,8 +987,8 @@ static int r8192_wx_set_enc_ext(struct net_device *dev,
 
 	ret = rtllib_wx_set_encode_ext(ieee, info, wrqu, extra);
 	{
-		u8 broadcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-		u8 zero[6] = {0};
+		const u8 broadcast_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+		const u8 zero[ETH_ALEN] = {0};
 		u32 key[4] = {0};
 		struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
 		struct iw_point *encoding = &wrqu->encoding;
diff --git a/drivers/staging/rtl8192e/rtl819x_Qos.h b/drivers/staging/rtl8192e/rtl819x_Qos.h
index 55ef7ec33f65..b3e7dae982a7 100644
--- a/drivers/staging/rtl8192e/rtl819x_Qos.h
+++ b/drivers/staging/rtl8192e/rtl819x_Qos.h
@@ -255,8 +255,8 @@ union qos_tclas {
 		u8		Priority;
 		u8		ClassifierType;
 		u8		Mask;
-		u8		SrcAddr[6];
-		u8		DstAddr[6];
+		u8		SrcAddr[ETH_ALEN];
+		u8		DstAddr[ETH_ALEN];
 		u16		Type;
 	} TYPE0_ETH;
 
diff --git a/drivers/staging/rtl8192e/rtl819x_TS.h b/drivers/staging/rtl8192e/rtl819x_TS.h
index 8601b1ad217d..b3e721bf975c 100644
--- a/drivers/staging/rtl8192e/rtl819x_TS.h
+++ b/drivers/staging/rtl8192e/rtl819x_TS.h
@@ -35,7 +35,7 @@ struct ts_common_info {
 	struct list_head		List;
 	struct timer_list		SetupTimer;
 	struct timer_list		InactTimer;
-	u8				Addr[6];
+	u8				Addr[ETH_ALEN];
 	union tspec_body TSpec;
 	union qos_tclas TClass[TCLAS_NUM];
 	u8				TClasProc;
diff --git a/drivers/staging/rtl8192e/rtllib.h b/drivers/staging/rtl8192e/rtllib.h
index bfec4fde01d1..411363c5eb9a 100644
--- a/drivers/staging/rtl8192e/rtllib.h
+++ b/drivers/staging/rtl8192e/rtllib.h
@@ -1531,7 +1531,7 @@ struct rtllib_network {
 	u16	CcxRmState[2];
 	bool	bMBssidValid;
 	u8	MBssidMask;
-	u8	MBssid[6];
+	u8	MBssid[ETH_ALEN];
 	bool	bWithCcxVerNum;
 	u8	BssCcxVerNumber;
 	/* These are network statistics */
@@ -1866,7 +1866,7 @@ struct rt_link_detect {
 
 struct sw_cam_table {
 
-	u8				macaddr[6];
+	u8				macaddr[ETH_ALEN];
 	bool				bused;
 	u8				key_buf[16];
 	u16				key_type;
@@ -1912,10 +1912,10 @@ enum ratr_table_mode_8192s {
 
 #define	NUM_PMKID_CACHE		16
 struct rt_pmkid_list {
-	u8 bUsed;
-	u8 Bssid[6];
+	u8 Bssid[ETH_ALEN];
 	u8 PMKID[16];
 	u8 SsidBuf[33];
+	u8 bUsed;
 	u8 *ssid_octet;
 	u16 ssid_length;
 };
@@ -2083,7 +2083,7 @@ struct rtllib_device {
 	u8 *wpa_ie;
 	size_t wps_ie_len;
 	u8 *wps_ie;
-	u8 ap_mac_addr[6];
+	u8 ap_mac_addr[ETH_ALEN];
 	u16 pairwise_key_type;
 	u16 group_key_type;
 
diff --git a/drivers/staging/rtl8192e/rtllib_crypt_tkip.c b/drivers/staging/rtl8192e/rtllib_crypt_tkip.c
index 656b4b359c50..cdad066538bf 100644
--- a/drivers/staging/rtl8192e/rtllib_crypt_tkip.c
+++ b/drivers/staging/rtl8192e/rtllib_crypt_tkip.c
@@ -52,7 +52,8 @@ struct rtllib_tkip_data {
 	struct crypto_blkcipher *tx_tfm_arc4;
 	struct crypto_hash *tx_tfm_michael;
 	/* scratch buffers for virt_to_page() (crypto API) */
-	u8 rx_hdr[16], tx_hdr[16];
+	u8 rx_hdr[16];
+	u8 tx_hdr[16];
 };
 
 static void *rtllib_tkip_init(int key_idx)
diff --git a/drivers/staging/rtl8192e/rtllib_rx.c b/drivers/staging/rtl8192e/rtllib_rx.c
index bb789cc9208d..3228bfd1a5f6 100644
--- a/drivers/staging/rtl8192e/rtllib_rx.c
+++ b/drivers/staging/rtl8192e/rtllib_rx.c
@@ -1258,7 +1258,11 @@ static int rtllib_rx_InfraAdhoc(struct rtllib_device *ieee, struct sk_buff *skb,
 	struct rx_ts_record *pTS = NULL;
 	u16 fc, sc, SeqNum = 0;
 	u8 type, stype, multicast = 0, unicast = 0, nr_subframes = 0, TID = 0;
-	u8 dst[ETH_ALEN], src[ETH_ALEN], bssid[ETH_ALEN] = {0}, *payload;
+	u8 *payload;
+	u8 dst[ETH_ALEN];
+	u8 src[ETH_ALEN];
+	u8 bssid[ETH_ALEN] = {0};
+
 	size_t hdrlen = 0;
 	bool bToOtherSTA = false;
 	int ret = 0, i = 0;
diff --git a/drivers/staging/rtl8192e/rtllib_softmac.c b/drivers/staging/rtl8192e/rtllib_softmac.c
index cd758feac88c..051105d77a21 100644
--- a/drivers/staging/rtl8192e/rtllib_softmac.c
+++ b/drivers/staging/rtl8192e/rtllib_softmac.c
@@ -1957,9 +1957,9 @@ static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
 static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
 				      struct sk_buff *skb)
 {
-
 	u8 dest[ETH_ALEN];
 
+
 	ieee->softmac_stats.rx_ass_rq++;
 	if (assoc_rq_parse(skb, dest) != -1)
 		rtllib_resp_to_assoc_rq(ieee, dest);
@@ -2912,7 +2912,7 @@ exit:
 
 struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
 {
-	u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+	const u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 
 	struct sk_buff *skb;
 	struct rtllib_probe_response *b;
diff --git a/drivers/staging/rtl8192e/rtllib_tx.c b/drivers/staging/rtl8192e/rtllib_tx.c
index 3b159638bba2..b177d7b32198 100644
--- a/drivers/staging/rtl8192e/rtllib_tx.c
+++ b/drivers/staging/rtl8192e/rtllib_tx.c
@@ -579,8 +579,9 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
 		.seq_ctl = 0,
 		.qos_ctl = 0
 	};
-	u8 dest[ETH_ALEN], src[ETH_ALEN];
 	int qos_actived = ieee->current_network.qos_data.active;
+	u8 dest[ETH_ALEN];
+	u8 src[ETH_ALEN];
 	struct lib80211_crypt_data *crypt = NULL;
 	struct cb_desc *tcb_desc;
 	u8 bIsMulticast = false;