[PATCH 2/9] staging: rtl8188eu: Remove unused functons defined in rtw_br_ext.c

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This patch removes some functions defined in rtw_br_ext.c, which have become
obsolete after removal of rtw_br_client_tx().

Signed-off-by: navin patidar <navin.patidar@xxxxxxxxx>
---
 drivers/staging/rtl8188eu/core/rtw_br_ext.c    |  727 ------------------------
 drivers/staging/rtl8188eu/include/usb_osintf.h |    1 -
 2 files changed, 728 deletions(-)

diff --git a/drivers/staging/rtl8188eu/core/rtw_br_ext.c b/drivers/staging/rtl8188eu/core/rtw_br_ext.c
index 70b8f07..8689912 100644
--- a/drivers/staging/rtl8188eu/core/rtw_br_ext.c
+++ b/drivers/staging/rtl8188eu/core/rtw_br_ext.c
@@ -103,27 +103,6 @@ static inline int __nat25_add_pppoe_tag(struct sk_buff *skb, struct pppoe_tag *t
 	return data_len;
 }
 
-static int skb_pull_and_merge(struct sk_buff *skb, unsigned char *src, int len)
-{
-	int tail_len;
-	unsigned long end, tail;
-
-	if ((src+len) > skb_tail_pointer(skb) || skb->len < len)
-		return -1;
-
-	tail = (unsigned long)skb_tail_pointer(skb);
-	end = (unsigned long)src+len;
-	if (tail < end)
-		return -1;
-
-	tail_len = (int)(tail-end);
-	if (tail_len > 0)
-		memmove(src, src+len, tail_len);
-
-	skb_trim(skb, skb->len-len);
-	return 0;
-}
-
 static inline unsigned long __nat25_timeout(struct adapter *priv)
 {
 	unsigned long timeout;
@@ -196,91 +175,6 @@ static inline void __nat25_generate_pppoe_network_addr(unsigned char *networkAdd
 	memcpy(networkAddr+3, (unsigned char *)ac_mac, 6);
 }
 
-static  void __nat25_generate_ipv6_network_addr(unsigned char *networkAddr,
-				__be32 *ipAddr)
-{
-	memset(networkAddr, 0, MAX_NETWORK_ADDR_LEN);
-
-	networkAddr[0] = NAT25_IPV6;
-	memcpy(networkAddr+1, (unsigned char *)ipAddr, 16);
-}
-
-static unsigned char *scan_tlv(unsigned char *data, int len, unsigned char tag, unsigned char len8b)
-{
-	while (len > 0) {
-		if (*data == tag && *(data+1) == len8b && len >= len8b*8)
-			return data+2;
-
-		len -= (*(data+1))*8;
-		data += (*(data+1))*8;
-	}
-	return NULL;
-}
-
-static int update_nd_link_layer_addr(unsigned char *data, int len, unsigned char *replace_mac)
-{
-	struct icmp6hdr *icmphdr = (struct icmp6hdr *)data;
-	unsigned char *mac;
-
-	if (icmphdr->icmp6_type == NDISC_ROUTER_SOLICITATION) {
-		if (len >= 8) {
-			mac = scan_tlv(&data[8], len-8, 1, 1);
-			if (mac) {
-				_DEBUG_INFO("Router Solicitation, replace MAC From: %02x:%02x:%02x:%02x:%02x:%02x, To: %02x:%02x:%02x:%02x:%02x:%02x\n",
-					mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
-					replace_mac[0], replace_mac[1], replace_mac[2], replace_mac[3], replace_mac[4], replace_mac[5]);
-				memcpy(mac, replace_mac, 6);
-				return 1;
-			}
-		}
-	} else if (icmphdr->icmp6_type == NDISC_ROUTER_ADVERTISEMENT) {
-		if (len >= 16) {
-			mac = scan_tlv(&data[16], len-16, 1, 1);
-			if (mac) {
-				_DEBUG_INFO("Router Advertisement, replace MAC From: %02x:%02x:%02x:%02x:%02x:%02x, To: %02x:%02x:%02x:%02x:%02x:%02x\n",
-					mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
-					replace_mac[0], replace_mac[1], replace_mac[2], replace_mac[3], replace_mac[4], replace_mac[5]);
-				memcpy(mac, replace_mac, 6);
-				return 1;
-			}
-		}
-	} else if (icmphdr->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION) {
-		if (len >= 24) {
-			mac = scan_tlv(&data[24], len-24, 1, 1);
-			if (mac) {
-				_DEBUG_INFO("Neighbor Solicitation, replace MAC From: %02x:%02x:%02x:%02x:%02x:%02x, To: %02x:%02x:%02x:%02x:%02x:%02x\n",
-					mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
-					replace_mac[0], replace_mac[1], replace_mac[2], replace_mac[3], replace_mac[4], replace_mac[5]);
-				memcpy(mac, replace_mac, 6);
-				return 1;
-			}
-		}
-	} else if (icmphdr->icmp6_type == NDISC_NEIGHBOUR_ADVERTISEMENT) {
-		if (len >= 24) {
-			mac = scan_tlv(&data[24], len-24, 2, 1);
-			if (mac) {
-				_DEBUG_INFO("Neighbor Advertisement, replace MAC From: %02x:%02x:%02x:%02x:%02x:%02x, To: %02x:%02x:%02x:%02x:%02x:%02x\n",
-					mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
-					replace_mac[0], replace_mac[1], replace_mac[2], replace_mac[3], replace_mac[4], replace_mac[5]);
-				memcpy(mac, replace_mac, 6);
-				return 1;
-			}
-		}
-	} else if (icmphdr->icmp6_type == NDISC_REDIRECT) {
-		if (len >= 40) {
-			mac = scan_tlv(&data[40], len-40, 2, 1);
-			if (mac) {
-				_DEBUG_INFO("Redirect,  replace MAC From: %02x:%02x:%02x:%02x:%02x:%02x, To: %02x:%02x:%02x:%02x:%02x:%02x\n",
-					mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
-					replace_mac[0], replace_mac[1], replace_mac[2], replace_mac[3], replace_mac[4], replace_mac[5]);
-				memcpy(mac, replace_mac, 6);
-				return 1;
-			}
-		}
-	}
-	return 0;
-}
-
 static inline int __nat25_network_hash(unsigned char *networkAddr)
 {
 	if (networkAddr[0] == NAT25_IPV4) {
@@ -349,88 +243,6 @@ static inline void __network_hash_unlink(struct nat25_network_db_entry *ent)
 	ent->pprev_hash = NULL;
 }
 
-static int __nat25_db_network_lookup_and_replace(struct adapter *priv,
-				struct sk_buff *skb, unsigned char *networkAddr)
-{
-	struct nat25_network_db_entry *db;
-	spin_lock_bh(&priv->br_ext_lock);
-
-	db = priv->nethash[__nat25_network_hash(networkAddr)];
-	while (db != NULL) {
-		if (!memcmp(db->networkAddr, networkAddr, MAX_NETWORK_ADDR_LEN)) {
-			if (!__nat25_has_expired(priv, db)) {
-				/*  replace the destination mac address */
-				memcpy(skb->data, db->macAddr, ETH_ALEN);
-				atomic_inc(&db->use_count);
-
-				DEBUG_INFO("NAT25: Lookup M:%02x%02x%02x%02x%02x%02x N:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
-							"%02x%02x%02x%02x%02x%02x\n",
-					db->macAddr[0],
-					db->macAddr[1],
-					db->macAddr[2],
-					db->macAddr[3],
-					db->macAddr[4],
-					db->macAddr[5],
-					db->networkAddr[0],
-					db->networkAddr[1],
-					db->networkAddr[2],
-					db->networkAddr[3],
-					db->networkAddr[4],
-					db->networkAddr[5],
-					db->networkAddr[6],
-					db->networkAddr[7],
-					db->networkAddr[8],
-					db->networkAddr[9],
-					db->networkAddr[10],
-					db->networkAddr[11],
-					db->networkAddr[12],
-					db->networkAddr[13],
-					db->networkAddr[14],
-					db->networkAddr[15],
-					db->networkAddr[16]);
-			}
-			spin_unlock_bh(&priv->br_ext_lock);
-			return 1;
-		}
-		db = db->next_hash;
-	}
-	spin_unlock_bh(&priv->br_ext_lock);
-	return 0;
-}
-
-static void __nat25_db_network_insert(struct adapter *priv,
-				unsigned char *macAddr, unsigned char *networkAddr)
-{
-	struct nat25_network_db_entry *db;
-	int hash;
-
-	spin_lock_bh(&priv->br_ext_lock);
-	hash = __nat25_network_hash(networkAddr);
-	db = priv->nethash[hash];
-	while (db != NULL) {
-		if (!memcmp(db->networkAddr, networkAddr, MAX_NETWORK_ADDR_LEN)) {
-			ether_addr_copy(db->macAddr, macAddr);
-			db->ageing_timer = jiffies;
-			spin_unlock_bh(&priv->br_ext_lock);
-			return;
-		}
-		db = db->next_hash;
-	}
-	db = (struct nat25_network_db_entry *) rtw_malloc(sizeof(*db));
-	if (db == NULL) {
-		spin_unlock_bh(&priv->br_ext_lock);
-		return;
-	}
-	memcpy(db->networkAddr, networkAddr, MAX_NETWORK_ADDR_LEN);
-	ether_addr_copy(db->macAddr, macAddr);
-	atomic_set(&db->use_count, 1);
-	db->ageing_timer = jiffies;
-
-	__network_hash_link(priv, db, hash);
-
-	spin_unlock_bh(&priv->br_ext_lock);
-}
-
 /*
  *	NAT2.5 interface
  */
@@ -491,545 +303,6 @@ void nat25_db_expire(struct adapter *priv)
 	spin_unlock_bh(&priv->br_ext_lock);
 }
 
-int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
-{
-	unsigned short protocol;
-	unsigned char networkAddr[MAX_NETWORK_ADDR_LEN];
-	unsigned int tmp;
-
-	if (skb == NULL)
-		return -1;
-
-	if ((method <= NAT25_MIN) || (method >= NAT25_MAX))
-		return -1;
-
-	protocol = be16_to_cpu(*((__be16 *)(skb->data + 2 * ETH_ALEN)));
-
-	/*---------------------------------------------------*/
-	/*                 Handle IP frame                   */
-	/*---------------------------------------------------*/
-	if (protocol == ETH_P_IP) {
-		struct iphdr *iph = (struct iphdr *)(skb->data + ETH_HLEN);
-
-		if (((unsigned char *)(iph) + (iph->ihl<<2)) >= (skb->data + ETH_HLEN + skb->len)) {
-			DEBUG_WARN("NAT25: malformed IP packet !\n");
-			return -1;
-		}
-
-		switch (method) {
-		case NAT25_CHECK:
-			return -1;
-		case NAT25_INSERT:
-			/* some multicast with source IP is all zero, maybe other case is illegal */
-			/* in class A, B, C, host address is all zero or all one is illegal */
-			if (iph->saddr == 0)
-				return 0;
-			tmp = be32_to_cpu(iph->saddr);
-			DEBUG_INFO("NAT25: Insert IP, SA =%08x, DA =%08x\n", tmp, iph->daddr);
-			__nat25_generate_ipv4_network_addr(networkAddr, &tmp);
-			/* record source IP address and , source mac address into db */
-			__nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-
-			return 0;
-		case NAT25_LOOKUP:
-			DEBUG_INFO("NAT25: Lookup IP, SA =%08x, DA =%08x\n", iph->saddr, iph->daddr);
-			tmp = be32_to_cpu(iph->daddr);
-			__nat25_generate_ipv4_network_addr(networkAddr, &tmp);
-
-			if (!__nat25_db_network_lookup_and_replace(priv, skb, networkAddr)) {
-				if (*((unsigned char *)&iph->daddr + 3) == 0xff) {
-					/*  L2 is unicast but L3 is broadcast, make L2 bacome broadcast */
-					DEBUG_INFO("NAT25: Set DA as broadcast\n");
-					memset(skb->data, 0xff, ETH_ALEN);
-				} else {
-					/*  forward unknown IP packet to upper TCP/IP */
-					DEBUG_INFO("NAT25: Replace DA with BR's MAC\n");
-					if ((*(u32 *)priv->br_mac) == 0 && (*(u16 *)(priv->br_mac+4)) == 0) {
-						netdev_info(skb->dev,
-								"Re-init netdev_br_init() due to br_mac == 0!\n");
-						netdev_br_init(priv->pnetdev);
-					}
-					memcpy(skb->data, priv->br_mac, ETH_ALEN);
-				}
-			}
-			return 0;
-		default:
-			return -1;
-		}
-	} else if (protocol == ETH_P_ARP) {
-		/*---------------------------------------------------*/
-		/*                 Handle ARP frame                  */
-		/*---------------------------------------------------*/
-		struct arphdr *arp = (struct arphdr *)(skb->data + ETH_HLEN);
-		unsigned char *arp_ptr = (unsigned char *)(arp + 1);
-		unsigned int *sender, *target;
-
-		if (arp->ar_pro != __constant_htons(ETH_P_IP)) {
-			DEBUG_WARN("NAT25: arp protocol unknown (%4x)!\n", be16_to_cpu(arp->ar_pro));
-			return -1;
-		}
-
-		switch (method) {
-		case NAT25_CHECK:
-			return 0;	/*  skb_copy for all ARP frame */
-		case NAT25_INSERT:
-			DEBUG_INFO("NAT25: Insert ARP, MAC =%02x%02x%02x%02x%02x%02x\n", arp_ptr[0],
-				arp_ptr[1], arp_ptr[2], arp_ptr[3], arp_ptr[4], arp_ptr[5]);
-
-			/*  change to ARP sender mac address to wlan STA address */
-			memcpy(arp_ptr, GET_MY_HWADDR(priv), ETH_ALEN);
-			arp_ptr += arp->ar_hln;
-			sender = (unsigned int *)arp_ptr;
-			__nat25_generate_ipv4_network_addr(networkAddr, sender);
-			__nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-			return 0;
-		case NAT25_LOOKUP:
-			DEBUG_INFO("NAT25: Lookup ARP\n");
-
-			arp_ptr += arp->ar_hln;
-			sender = (unsigned int *)arp_ptr;
-			arp_ptr += (arp->ar_hln + arp->ar_pln);
-			target = (unsigned int *)arp_ptr;
-			__nat25_generate_ipv4_network_addr(networkAddr, target);
-			__nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-			/*  change to ARP target mac address to Lookup result */
-			arp_ptr = (unsigned char *)(arp + 1);
-			arp_ptr += (arp->ar_hln + arp->ar_pln);
-			memcpy(arp_ptr, skb->data, ETH_ALEN);
-			return 0;
-		default:
-			return -1;
-		}
-	} else if ((protocol == ETH_P_IPX) ||
-		   (protocol <= ETH_FRAME_LEN)) {
-		/*---------------------------------------------------*/
-		/*         Handle IPX and Apple Talk frame           */
-		/*---------------------------------------------------*/
-		unsigned char ipx_header[2] = {0xFF, 0xFF};
-		struct ipxhdr	*ipx = NULL;
-		struct elapaarp	*ea = NULL;
-		struct ddpehdr	*ddp = NULL;
-		unsigned char *framePtr = skb->data + ETH_HLEN;
-
-		if (protocol == ETH_P_IPX) {
-			DEBUG_INFO("NAT25: Protocol = IPX (Ethernet II)\n");
-			ipx = (struct ipxhdr *)framePtr;
-		} else if (protocol <= ETH_FRAME_LEN) {
-			if (!memcmp(ipx_header, framePtr, 2)) {
-				DEBUG_INFO("NAT25: Protocol = IPX (Ethernet 802.3)\n");
-				ipx = (struct ipxhdr *)framePtr;
-			} else {
-				unsigned char ipx_8022_type =  0xE0;
-				unsigned char snap_8022_type = 0xAA;
-
-				if (*framePtr == snap_8022_type) {
-					unsigned char ipx_snap_id[5] = {0x0, 0x0, 0x0, 0x81, 0x37};		/*  IPX SNAP ID */
-					unsigned char aarp_snap_id[5] = {0x00, 0x00, 0x00, 0x80, 0xF3};	/*  Apple Talk AARP SNAP ID */
-					unsigned char ddp_snap_id[5] = {0x08, 0x00, 0x07, 0x80, 0x9B};	/*  Apple Talk DDP SNAP ID */
-
-					framePtr += 3;	/*  eliminate the 802.2 header */
-
-					if (!memcmp(ipx_snap_id, framePtr, 5)) {
-						framePtr += 5;	/*  eliminate the SNAP header */
-
-						DEBUG_INFO("NAT25: Protocol = IPX (Ethernet SNAP)\n");
-						ipx = (struct ipxhdr *)framePtr;
-					} else if (!memcmp(aarp_snap_id, framePtr, 5)) {
-						framePtr += 5;	/*  eliminate the SNAP header */
-
-						ea = (struct elapaarp *)framePtr;
-					} else if (!memcmp(ddp_snap_id, framePtr, 5)) {
-						framePtr += 5;	/*  eliminate the SNAP header */
-
-						ddp = (struct ddpehdr *)framePtr;
-					} else {
-						DEBUG_WARN("NAT25: Protocol = Ethernet SNAP %02x%02x%02x%02x%02x\n", framePtr[0],
-							framePtr[1], framePtr[2], framePtr[3], framePtr[4]);
-						return -1;
-					}
-				} else if (*framePtr == ipx_8022_type) {
-					framePtr += 3;	/*  eliminate the 802.2 header */
-
-					if (!memcmp(ipx_header, framePtr, 2)) {
-						DEBUG_INFO("NAT25: Protocol = IPX (Ethernet 802.2)\n");
-						ipx = (struct ipxhdr *)framePtr;
-					} else {
-						return -1;
-					}
-				} else {
-					return -1;
-				}
-			}
-		} else {
-			return -1;
-		}
-
-		/*   IPX   */
-		if (ipx != NULL) {
-			switch (method) {
-			case NAT25_CHECK:
-				if (!memcmp(skb->data+ETH_ALEN, ipx->ipx_source.node, ETH_ALEN))
-					DEBUG_INFO("NAT25: Check IPX skb_copy\n");
-				return 0;
-			case NAT25_INSERT:
-				DEBUG_INFO("NAT25: Insert IPX, Dest =%08x,%02x%02x%02x%02x%02x%02x,%04x Source =%08x,%02x%02x%02x%02x%02x%02x,%04x\n",
-					ipx->ipx_dest.net,
-					ipx->ipx_dest.node[0],
-					ipx->ipx_dest.node[1],
-					ipx->ipx_dest.node[2],
-					ipx->ipx_dest.node[3],
-					ipx->ipx_dest.node[4],
-					ipx->ipx_dest.node[5],
-					ipx->ipx_dest.sock,
-					ipx->ipx_source.net,
-					ipx->ipx_source.node[0],
-					ipx->ipx_source.node[1],
-					ipx->ipx_source.node[2],
-					ipx->ipx_source.node[3],
-					ipx->ipx_source.node[4],
-					ipx->ipx_source.node[5],
-					ipx->ipx_source.sock);
-
-				if (!memcmp(skb->data+ETH_ALEN, ipx->ipx_source.node, ETH_ALEN)) {
-					DEBUG_INFO("NAT25: Use IPX Net, and Socket as network addr\n");
-
-					__nat25_generate_ipx_network_addr_with_socket(networkAddr, &ipx->ipx_source.net, &ipx->ipx_source.sock);
-
-					/*  change IPX source node addr to wlan STA address */
-					memcpy(ipx->ipx_source.node, GET_MY_HWADDR(priv), ETH_ALEN);
-				} else {
-					__nat25_generate_ipx_network_addr_with_node(networkAddr, &ipx->ipx_source.net, ipx->ipx_source.node);
-				}
-				__nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-				return 0;
-			case NAT25_LOOKUP:
-				if (!memcmp(GET_MY_HWADDR(priv), ipx->ipx_dest.node, ETH_ALEN)) {
-					DEBUG_INFO("NAT25: Lookup IPX, Modify Destination IPX Node addr\n");
-
-					__nat25_generate_ipx_network_addr_with_socket(networkAddr, &ipx->ipx_dest.net, &ipx->ipx_dest.sock);
-
-					__nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-
-					/*  replace IPX destination node addr with Lookup destination MAC addr */
-					memcpy(ipx->ipx_dest.node, skb->data, ETH_ALEN);
-				} else {
-					__nat25_generate_ipx_network_addr_with_node(networkAddr, &ipx->ipx_dest.net, ipx->ipx_dest.node);
-
-					__nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-				}
-				return 0;
-			default:
-				return -1;
-			}
-		} else if (ea != NULL) {
-			/* Sanity check fields. */
-			if (ea->hw_len != ETH_ALEN || ea->pa_len != AARP_PA_ALEN) {
-				DEBUG_WARN("NAT25: Appletalk AARP Sanity check fail!\n");
-				return -1;
-			}
-
-			switch (method) {
-			case NAT25_CHECK:
-				return 0;
-			case NAT25_INSERT:
-				/*  change to AARP source mac address to wlan STA address */
-				memcpy(ea->hw_src, GET_MY_HWADDR(priv), ETH_ALEN);
-
-				DEBUG_INFO("NAT25: Insert AARP, Source =%d,%d Destination =%d,%d\n",
-					ea->pa_src_net,
-					ea->pa_src_node,
-					ea->pa_dst_net,
-					ea->pa_dst_node);
-
-				__nat25_generate_apple_network_addr(networkAddr, &ea->pa_src_net, &ea->pa_src_node);
-
-				__nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-
-				return 0;
-			case NAT25_LOOKUP:
-				DEBUG_INFO("NAT25: Lookup AARP, Source =%d,%d Destination =%d,%d\n",
-					ea->pa_src_net,
-					ea->pa_src_node,
-					ea->pa_dst_net,
-					ea->pa_dst_node);
-
-				__nat25_generate_apple_network_addr(networkAddr, &ea->pa_dst_net, &ea->pa_dst_node);
-
-				__nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-
-				/*  change to AARP destination mac address to Lookup result */
-				memcpy(ea->hw_dst, skb->data, ETH_ALEN);
-				return 0;
-			default:
-				return -1;
-			}
-		} else if (ddp != NULL) {
-			switch (method) {
-			case NAT25_CHECK:
-				return -1;
-			case NAT25_INSERT:
-				DEBUG_INFO("NAT25: Insert DDP, Source =%d,%d Destination =%d,%d\n",
-					ddp->deh_snet,
-					ddp->deh_snode,
-					ddp->deh_dnet,
-					ddp->deh_dnode);
-
-				__nat25_generate_apple_network_addr(networkAddr, &ddp->deh_snet, &ddp->deh_snode);
-
-				__nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-
-				return 0;
-			case NAT25_LOOKUP:
-				DEBUG_INFO("NAT25: Lookup DDP, Source =%d,%d Destination =%d,%d\n",
-					ddp->deh_snet,
-					ddp->deh_snode,
-					ddp->deh_dnet,
-					ddp->deh_dnode);
-				__nat25_generate_apple_network_addr(networkAddr, &ddp->deh_dnet, &ddp->deh_dnode);
-				__nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-				return 0;
-			default:
-				return -1;
-			}
-		}
-
-		return -1;
-	} else if ((protocol == ETH_P_PPP_DISC) ||
-		   (protocol == ETH_P_PPP_SES)) {
-		/*---------------------------------------------------*/
-		/*                Handle PPPoE frame                 */
-		/*---------------------------------------------------*/
-		struct pppoe_hdr *ph = (struct pppoe_hdr *)(skb->data + ETH_HLEN);
-		__be16 *pMagic;
-
-		switch (method) {
-		case NAT25_CHECK:
-			if (ph->sid == 0)
-				return 0;
-			return 1;
-		case NAT25_INSERT:
-			if (ph->sid == 0) {	/*  Discovery phase according to tag */
-				if (ph->code == PADI_CODE || ph->code == PADR_CODE) {
-					if (priv->ethBrExtInfo.addPPPoETag) {
-						struct pppoe_tag *tag, *pOldTag;
-						unsigned char tag_buf[40];
-						int old_tag_len = 0;
-
-						tag = (struct pppoe_tag *)tag_buf;
-						pOldTag = (struct pppoe_tag *)__nat25_find_pppoe_tag(ph, ntohs(PTT_RELAY_SID));
-						if (pOldTag) { /*  if SID existed, copy old value and delete it */
-							old_tag_len = ntohs(pOldTag->tag_len);
-							if (old_tag_len+TAG_HDR_LEN+MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN > sizeof(tag_buf)) {
-								DEBUG_ERR("SID tag length too long!\n");
-								return -1;
-							}
-
-							memcpy(tag->tag_data+MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN,
-								pOldTag->tag_data, old_tag_len);
-
-							if (skb_pull_and_merge(skb, (unsigned char *)pOldTag, TAG_HDR_LEN+old_tag_len) < 0) {
-								DEBUG_ERR("call skb_pull_and_merge() failed in PADI/R packet!\n");
-								return -1;
-							}
-							ph->length = htons(ntohs(ph->length)-TAG_HDR_LEN-old_tag_len);
-						}
-
-						tag->tag_type = PTT_RELAY_SID;
-						tag->tag_len = htons(MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN+old_tag_len);
-
-						/*  insert the magic_code+client mac in relay tag */
-						pMagic = (__be16 *)tag->tag_data;
-						*pMagic = htons(MAGIC_CODE);
-						memcpy(tag->tag_data+MAGIC_CODE_LEN, skb->data+ETH_ALEN, ETH_ALEN);
-
-						/* Add relay tag */
-						if (__nat25_add_pppoe_tag(skb, tag) < 0)
-							return -1;
-
-						DEBUG_INFO("NAT25: Insert PPPoE, forward %s packet\n",
-										(ph->code == PADI_CODE ? "PADI" : "PADR"));
-					} else { /*  not add relay tag */
-						if (priv->pppoe_connection_in_progress &&
-								memcmp(skb->data+ETH_ALEN, priv->pppoe_addr, ETH_ALEN))	 {
-							DEBUG_ERR("Discard PPPoE packet due to another PPPoE connection is in progress!\n");
-							return -2;
-						}
-
-						if (priv->pppoe_connection_in_progress == 0)
-							memcpy(priv->pppoe_addr, skb->data+ETH_ALEN, ETH_ALEN);
-
-						priv->pppoe_connection_in_progress = WAIT_TIME_PPPOE;
-					}
-				} else {
-					return -1;
-				}
-			} else {	/*  session phase */
-				DEBUG_INFO("NAT25: Insert PPPoE, insert session packet to %s\n", skb->dev->name);
-
-				__nat25_generate_pppoe_network_addr(networkAddr, skb->data, &(ph->sid));
-
-				__nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-
-
-				if (!priv->ethBrExtInfo.addPPPoETag &&
-				    priv->pppoe_connection_in_progress &&
-				    !memcmp(skb->data+ETH_ALEN, priv->pppoe_addr, ETH_ALEN))
-					priv->pppoe_connection_in_progress = 0;
-			}
-			return 0;
-		case NAT25_LOOKUP:
-			if (ph->code == PADO_CODE || ph->code == PADS_CODE) {
-				if (priv->ethBrExtInfo.addPPPoETag) {
-					struct pppoe_tag *tag;
-					unsigned char *ptr;
-					unsigned short tagType, tagLen;
-					int offset = 0;
-
-					ptr = __nat25_find_pppoe_tag(ph, ntohs(PTT_RELAY_SID));
-					if (ptr == NULL) {
-						DEBUG_ERR("Fail to find PTT_RELAY_SID in FADO!\n");
-						return -1;
-					}
-
-					tag = (struct pppoe_tag *)ptr;
-					tagType = (unsigned short)((ptr[0] << 8) + ptr[1]);
-					tagLen = (unsigned short)((ptr[2] << 8) + ptr[3]);
-
-					if ((tagType != ntohs(PTT_RELAY_SID)) || (tagLen < (MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN))) {
-						DEBUG_ERR("Invalid PTT_RELAY_SID tag length [%d]!\n", tagLen);
-						return -1;
-					}
-
-					pMagic = (__be16 *)tag->tag_data;
-					if (ntohs(*pMagic) != MAGIC_CODE) {
-						DEBUG_ERR("Can't find MAGIC_CODE in %s packet!\n",
-							(ph->code == PADO_CODE ? "PADO" : "PADS"));
-						return -1;
-					}
-
-					memcpy(skb->data, tag->tag_data+MAGIC_CODE_LEN, ETH_ALEN);
-
-					if (tagLen > MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN)
-						offset = TAG_HDR_LEN;
-
-					if (skb_pull_and_merge(skb, ptr+offset, TAG_HDR_LEN+MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN-offset) < 0) {
-						DEBUG_ERR("call skb_pull_and_merge() failed in PADO packet!\n");
-						return -1;
-					}
-					ph->length = htons(ntohs(ph->length)-(TAG_HDR_LEN+MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN-offset));
-					if (offset > 0)
-						tag->tag_len = htons(tagLen-MAGIC_CODE_LEN-RTL_RELAY_TAG_LEN);
-
-					DEBUG_INFO("NAT25: Lookup PPPoE, forward %s Packet from %s\n",
-						(ph->code == PADO_CODE ? "PADO" : "PADS"),	skb->dev->name);
-				} else { /*  not add relay tag */
-					if (!priv->pppoe_connection_in_progress) {
-						DEBUG_ERR("Discard PPPoE packet due to no connection in progress!\n");
-						return -1;
-					}
-					memcpy(skb->data, priv->pppoe_addr, ETH_ALEN);
-					priv->pppoe_connection_in_progress = WAIT_TIME_PPPOE;
-				}
-			} else {
-				if (ph->sid != 0) {
-					DEBUG_INFO("NAT25: Lookup PPPoE, lookup session packet from %s\n", skb->dev->name);
-					__nat25_generate_pppoe_network_addr(networkAddr, skb->data+ETH_ALEN, &(ph->sid));
-					__nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-				} else {
-					return -1;
-				}
-			}
-			return 0;
-		default:
-			return -1;
-		}
-	} else if (protocol == 0x888e) {
-		/*---------------------------------------------------*/
-		/*                 Handle EAP frame                  */
-		/*---------------------------------------------------*/
-		switch (method) {
-		case NAT25_CHECK:
-			return -1;
-		case NAT25_INSERT:
-			return 0;
-		case NAT25_LOOKUP:
-			return 0;
-		default:
-			return -1;
-		}
-	} else if ((protocol == 0xe2ae) || (protocol == 0xe2af)) {
-		/*---------------------------------------------------*/
-		/*         Handle C-Media proprietary frame          */
-		/*---------------------------------------------------*/
-		switch (method) {
-		case NAT25_CHECK:
-			return -1;
-		case NAT25_INSERT:
-			return 0;
-		case NAT25_LOOKUP:
-			return 0;
-		default:
-			return -1;
-		}
-	} else if (protocol == ETH_P_IPV6) {
-		/*------------------------------------------------*/
-		/*         Handle IPV6 frame			  */
-		/*------------------------------------------------*/
-		struct ipv6hdr *iph = (struct ipv6hdr *)(skb->data + ETH_HLEN);
-
-		if (sizeof(*iph) >= (skb->len - ETH_HLEN)) {
-			DEBUG_WARN("NAT25: malformed IPv6 packet !\n");
-			return -1;
-		}
-
-		switch (method) {
-		case NAT25_CHECK:
-			if (skb->data[0] & 1)
-				return 0;
-			return -1;
-		case NAT25_INSERT:
-			DEBUG_INFO("NAT25: Insert IP, SA =%4x:%4x:%4x:%4x:%4x:%4x:%4x:%4x,"
-							" DA =%4x:%4x:%4x:%4x:%4x:%4x:%4x:%4x\n",
-				iph->saddr.s6_addr16[0], iph->saddr.s6_addr16[1], iph->saddr.s6_addr16[2], iph->saddr.s6_addr16[3],
-				iph->saddr.s6_addr16[4], iph->saddr.s6_addr16[5], iph->saddr.s6_addr16[6], iph->saddr.s6_addr16[7],
-				iph->daddr.s6_addr16[0], iph->daddr.s6_addr16[1], iph->daddr.s6_addr16[2], iph->daddr.s6_addr16[3],
-				iph->daddr.s6_addr16[4], iph->daddr.s6_addr16[5], iph->daddr.s6_addr16[6], iph->daddr.s6_addr16[7]);
-
-			if (memcmp(&iph->saddr, "\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0\x0", 16)) {
-				__nat25_generate_ipv6_network_addr(networkAddr, (__be32 *)&iph->saddr);
-				__nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-
-				if (iph->nexthdr == IPPROTO_ICMPV6 &&
-						skb->len > (ETH_HLEN +  sizeof(*iph) + 4)) {
-					if (update_nd_link_layer_addr(skb->data + ETH_HLEN + sizeof(*iph),
-								      skb->len - ETH_HLEN - sizeof(*iph), GET_MY_HWADDR(priv))) {
-						struct icmp6hdr  *hdr = (struct icmp6hdr *)(skb->data + ETH_HLEN + sizeof(*iph));
-						hdr->icmp6_cksum = 0;
-						hdr->icmp6_cksum = csum_ipv6_magic(&iph->saddr, &iph->daddr,
-										be16_to_cpu(iph->payload_len),
-										IPPROTO_ICMPV6,
-										csum_partial((__u8 *)hdr,
-										be16_to_cpu(iph->payload_len), 0));
-					}
-				}
-			}
-			return 0;
-		case NAT25_LOOKUP:
-			DEBUG_INFO("NAT25: Lookup IP, SA =%4x:%4x:%4x:%4x:%4x:%4x:%4x:%4x, DA =%4x:%4x:%4x:%4x:%4x:%4x:%4x:%4x\n",
-				   iph->saddr.s6_addr16[0], iph->saddr.s6_addr16[1], iph->saddr.s6_addr16[2], iph->saddr.s6_addr16[3],
-				   iph->saddr.s6_addr16[4], iph->saddr.s6_addr16[5], iph->saddr.s6_addr16[6], iph->saddr.s6_addr16[7],
-				   iph->daddr.s6_addr16[0], iph->daddr.s6_addr16[1], iph->daddr.s6_addr16[2], iph->daddr.s6_addr16[3],
-				   iph->daddr.s6_addr16[4], iph->daddr.s6_addr16[5], iph->daddr.s6_addr16[6], iph->daddr.s6_addr16[7]);
-			__nat25_generate_ipv6_network_addr(networkAddr, (__be32 *)&iph->daddr);
-			__nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-			return 0;
-		default:
-			return -1;
-		}
-	}
-	return -1;
-}
-
 #define SERVER_PORT			67
 #define CLIENT_PORT			68
 #define DHCP_MAGIC			0x63825363
diff --git a/drivers/staging/rtl8188eu/include/usb_osintf.h b/drivers/staging/rtl8188eu/include/usb_osintf.h
index 292ded7..8036c38 100644
--- a/drivers/staging/rtl8188eu/include/usb_osintf.h
+++ b/drivers/staging/rtl8188eu/include/usb_osintf.h
@@ -34,7 +34,6 @@ void dhcp_flag_bcast(struct adapter *priv, struct sk_buff *skb);
 void *scdb_findEntry(struct adapter *priv, unsigned char *macAddr,
 		     unsigned char *ipAddr);
 void nat25_db_expire(struct adapter *priv);
-int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method);
 
 int rtw_resume_process(struct adapter *padapter);
 
-- 
1.7.10.4

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