Improving the debug capabilities of the heap code, changed VFS to use const char...

[tpg/acess2.git] / Modules / IPStack / ipv4.h

diff --git a/Modules/IPStack/ipv4.h b/Modules/IPStack/ipv4.h
index 67b3dc8..d9bc0f7 100644 (file)
--- a/Modules/IPStack/ipv4.h
+++ b/Modules/IPStack/ipv4.h
@@ -12,9 +12,10 @@ typedef struct sIPv4Header   tIPv4Header;
 struct sIPv4Header
 {
        struct {
-               unsigned Version:       4;      // = 4
+               // Spec says Version is first, but stupid bit ordering
                unsigned HeaderLength:  4;      // in 4-byte chunks
-       };
+               unsigned Version:       4;      // = 4
+       } __attribute__((packed));
        Uint8   DiffServices;   // Differentiated Services
        Uint16  TotalLength;
        Uint16  Identifcation;
@@ -24,10 +25,10 @@ struct sIPv4Header
                unsigned DontFragment:  1;
                unsigned MoreFragments: 1;
                unsigned FragOffLow:    5;
-       };
+       } __attribute__((packed));
        Uint8   FragOffHi;      // Number of 8-byte blocks from the original start
        
-       Uint8   TTL;    // Max number of hops effectively
+       Uint8   TTL;    // Max number of hops, effectively
        Uint8   Protocol;
        Uint16  HeaderChecksum; // One's Complement Sum of the entire header must equal zero
        
@@ -35,7 +36,7 @@ struct sIPv4Header
        tIPv4   Destination;
        
        Uint8   Options[];
-};
+} __attribute__((packed));
 
 #define IP4PROT_ICMP   1
 #define IP4PROT_TCP    6
@@ -43,4 +44,9 @@ struct sIPv4Header
 
 #define IPV4_ETHERNET_ID       0x0800
 
+// === FUNCTIONS ===
+extern int     IPv4_RegisterCallback(int ID, tIPCallback Callback);
+extern Uint16  IPv4_Checksum(const void *Buf, int Size);
+extern int     IPv4_SendPacket(tInterface *Iface, tIPv4 Address, int Protocol, int ID, int Length, const void *Data);
+
 #endif