X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/071e02c6b6b4837fa9cf0b6d4c749994e02638d7..a8b66f318dda3cc18dfcedaa3af3d01ab68b82e8:/Demos/Device/ClassDriver/RNDISEthernet/Lib/Ethernet.c?ds=sidebyside

diff --git a/Demos/Device/ClassDriver/RNDISEthernet/Lib/Ethernet.c b/Demos/Device/ClassDriver/RNDISEthernet/Lib/Ethernet.c
index a3a42e22d..61193faaa 100644
--- a/Demos/Device/ClassDriver/RNDISEthernet/Lib/Ethernet.c
+++ b/Demos/Device/ClassDriver/RNDISEthernet/Lib/Ethernet.c
@@ -1,21 +1,21 @@
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.
-              
+
   dean [at] fourwalledcubicle [dot] com
-      www.fourwalledcubicle.com
+           www.lufa-lib.org
 */
 
 /*
   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
-  Permission to use, copy, modify, distribute, and sell this 
+  Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
-  without fee, provided that the above copyright notice appear in 
+  without fee, provided that the above copyright notice appear in
   all copies and that both that the copyright notice and this
-  permission notice and warranty disclaimer appear in supporting 
-  documentation, and that the name of the author not be used in 
-  advertising or publicity pertaining to distribution of the 
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
   software without specific, written prior permission.
 
   The author disclaim all warranties with regard to this
@@ -31,10 +31,10 @@
 /** \file
  *
  *  Ethernet frame packet handling routines. This protocol handles the processing of raw Ethernet
- *  frames sent and received, deferring the processing of subpacket protocols to the appropriate
+ *  frames sent and received, deferring the processing of sub-packet protocols to the appropriate
  *  protocol handlers, such as DHCP or ARP.
  */
- 
+
 #include "Ethernet.h"
 
 /** Constant for convenience when checking against or setting a MAC address to the virtual server MAC address. */
@@ -56,16 +56,17 @@ const IP_Address_t  ClientIPAddress     = {CLIENT_IP_ADDRESS};
 /** Processes an incoming Ethernet frame, and writes the appropriate response to the output Ethernet
  *  frame buffer if the sub protocol handlers create a valid response.
  */
-void Ethernet_ProcessPacket(Ethernet_Frame_Info_t* FrameIN, Ethernet_Frame_Info_t* FrameOUT)
+void Ethernet_ProcessPacket(Ethernet_Frame_Info_t* const FrameIN,
+                            Ethernet_Frame_Info_t* const FrameOUT)
 {
 	DecodeEthernetFrameHeader(FrameIN);
 
 	/* Cast the incoming Ethernet frame to the Ethernet header type */
 	Ethernet_Frame_Header_t* FrameINHeader  = (Ethernet_Frame_Header_t*)&FrameIN->FrameData;
 	Ethernet_Frame_Header_t* FrameOUTHeader = (Ethernet_Frame_Header_t*)&FrameOUT->FrameData;
-	
+
 	int16_t                  RetSize        = NO_RESPONSE;
-	
+
 	/* Ensure frame is addressed to either all (broadcast) or the virtual webserver, and is a type II frame */
 	if ((MAC_COMPARE(&FrameINHeader->Destination, &ServerMACAddress) ||
 	     MAC_COMPARE(&FrameINHeader->Destination, &BroadcastMACAddress)) &&
@@ -77,14 +78,14 @@ void Ethernet_ProcessPacket(Ethernet_Frame_Info_t* FrameIN, Ethernet_Frame_Info_
 			case ETHERTYPE_ARP:
 				RetSize = ARP_ProcessARPPacket(&FrameIN->FrameData[sizeof(Ethernet_Frame_Header_t)],
 				                               &FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t)]);
-				break;		
+				break;
 			case ETHERTYPE_IPV4:
 				RetSize = IP_ProcessIPPacket(FrameIN,
 				                             &FrameIN->FrameData[sizeof(Ethernet_Frame_Header_t)],
 				                             &FrameOUT->FrameData[sizeof(Ethernet_Frame_Header_t)]);
 				break;
 		}
-		
+
 		/* Protocol processing routine has filled a response, complete the ethernet frame header */
 		if (RetSize > 0)
 		{
@@ -92,7 +93,7 @@ void Ethernet_ProcessPacket(Ethernet_Frame_Info_t* FrameIN, Ethernet_Frame_Info_
 			FrameOUTHeader->Source          = ServerMACAddress;
 			FrameOUTHeader->Destination     = FrameINHeader->Source;
 			FrameOUTHeader->EtherType       = FrameINHeader->EtherType;
-			
+
 			/* Set the response length in the buffer and indicate that a response is ready to be sent */
 			FrameOUT->FrameLength           = (sizeof(Ethernet_Frame_Header_t) + RetSize);
 			FrameOUT->FrameInBuffer         = true;
@@ -115,16 +116,18 @@ void Ethernet_ProcessPacket(Ethernet_Frame_Info_t* FrameIN, Ethernet_Frame_Info_
  *
  *  \return A 16-bit Ethernet checksum value
  */
-uint16_t Ethernet_Checksum16(void* Data, uint16_t Bytes)
+uint16_t Ethernet_Checksum16(void* Data,
+                             uint16_t Bytes)
 {
 	uint16_t* Words    = (uint16_t*)Data;
 	uint32_t  Checksum = 0;
 
-	for (uint8_t CurrWord = 0; CurrWord < (Bytes >> 1); CurrWord++)
+	for (uint16_t CurrWord = 0; CurrWord < (Bytes >> 1); CurrWord++)
 	  Checksum += Words[CurrWord];
-	  
+
 	while (Checksum & 0xFFFF0000)
 	  Checksum = ((Checksum & 0xFFFF) + (Checksum >> 16));
-	
+
 	return ~Checksum;
 }
+