Staging: vt6655: use ETH_DATA_LEN macro instead of custom one

Replace custom maximum data lenght definition MAX_DATA_LEN by
ETH_DATA_LEN from <linux/if_ether.h>.

Signed-off-by: Charles Clément <caratorn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/vt6655/device_main.c

@@ -2156,7 +2156,7 @@ BOOL device_dma0_xmit(PSDevice pDevice, struct sk_buff *skb, UINT uNodeIndex) {
     cbFrameBodySize = skb->len - ETH_HLEN;
 
     // 802.1H
-    if (ntohs(pDevice->sTxEthHeader.wType) > MAX_DATA_LEN) {
+    if (ntohs(pDevice->sTxEthHeader.wType) > ETH_DATA_LEN) {
         cbFrameBodySize += 8;
     }
     uMACfragNum = cbGetFragCount(pDevice, pTransmitKey, cbFrameBodySize, &pDevice->sTxEthHeader);
@@ -2359,7 +2359,7 @@ static int  device_xmit(struct sk_buff *skb, struct net_device *dev) {
     memcpy(pDevice->sTxEthHeader.abyDstAddr, (PBYTE)(skb->data), ETH_HLEN);
     cbFrameBodySize = skb->len - ETH_HLEN;
     // 802.1H
-    if (ntohs(pDevice->sTxEthHeader.wType) > MAX_DATA_LEN) {
+    if (ntohs(pDevice->sTxEthHeader.wType) > ETH_DATA_LEN) {
         cbFrameBodySize += 8;
     }
 

drivers/staging/vt6655/rxtx.c

@@ -1622,7 +1622,7 @@ s_cbFillTxBufHead (
 
 
                 // 802.1H
-                if (ntohs(psEthHeader->wType) > MAX_DATA_LEN) {
+                if (ntohs(psEthHeader->wType) > ETH_DATA_LEN) {
                     if ((psEthHeader->wType == TYPE_PKT_IPX) ||
                         (psEthHeader->wType == cpu_to_le16(0xF380))) {
                         memcpy((PBYTE) (pbyPayloadHead), &pDevice->abySNAP_Bridgetunnel[0], 6);
@@ -1986,7 +1986,7 @@ s_cbFillTxBufHead (
         }
 
         // 802.1H
-        if (ntohs(psEthHeader->wType) > MAX_DATA_LEN) {
+        if (ntohs(psEthHeader->wType) > ETH_DATA_LEN) {
             if ((psEthHeader->wType == TYPE_PKT_IPX) ||
                 (psEthHeader->wType == cpu_to_le16(0xF380))) {
                 memcpy((PBYTE) (pbyPayloadHead), &pDevice->abySNAP_Bridgetunnel[0], 6);

drivers/staging/vt6655/tether.h

@@ -40,12 +40,11 @@
                                         // Ethernet address string length
 
 #define MIN_DATA_LEN        46          // min data length
-#define MAX_DATA_LEN        1500        // max data length
 
 #define MIN_PACKET_LEN      (MIN_DATA_LEN + ETH_HLEN)
                                         // 60
                                         // min total packet length (tx)
-#define MAX_PACKET_LEN      (MAX_DATA_LEN + ETH_HLEN)
+#define MAX_PACKET_LEN      (ETH_DATA_LEN + ETH_HLEN)
                                         // 1514
                                         // max total packet length (tx)
 

drivers/staging/vt6655/wroute.c

@@ -95,7 +95,7 @@ BOOL ROUTEbRelay (PSDevice pDevice, PBYTE pbySkbData, UINT uDataLen, UINT uNodeI
 
     cbFrameBodySize = uDataLen - ETH_HLEN;
 
-    if (ntohs(pDevice->sTxEthHeader.wType) > MAX_DATA_LEN) {
+    if (ntohs(pDevice->sTxEthHeader.wType) > ETH_DATA_LEN) {
         cbFrameBodySize += 8;
     }