X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Modules%2FIPStack%2Fipv4.c;h=aff593a6129bc250725c759b81256a4ce88888e6;hb=deb8a310abcb8ef8b6afef74a1fa058777740b3f;hp=5fe99abcad773b5fcbd3dd74daf0de27d9e15fca;hpb=845ed09f3edef0c836200df6afbd6bfbc7b3fef6;p=tpg%2Facess2.git diff --git a/Modules/IPStack/ipv4.c b/Modules/IPStack/ipv4.c index 5fe99abc..aff593a6 100644 --- a/Modules/IPStack/ipv4.c +++ b/Modules/IPStack/ipv4.c @@ -51,6 +51,12 @@ int IPv4_RegisterCallback(int ID, tIPCallback Callback) /** * \brief Creates and sends an IPv4 Packet + * \param Iface Interface + * \param Address Destination IP + * \param Protocol Protocol ID + * \param ID Some random ID number + * \param Length Data Length + * \param Data Packet Data */ int IPv4_SendPacket(tInterface *Iface, tIPv4 Address, int Protocol, int ID, int Length, void *Data) { @@ -63,6 +69,13 @@ int IPv4_SendPacket(tInterface *Iface, tIPv4 Address, int Protocol, int ID, int hdr->Version = 4; hdr->HeaderLength = sizeof(tIPv4Header)/4; hdr->DiffServices = 0; // TODO: Check + + hdr->Reserved = 0; + hdr->DontFragment = 0; + hdr->MoreFragments = 0; + hdr->FragOffLow = 0; + hdr->FragOffHi = 0; + hdr->TotalLength = htons( bufSize ); hdr->Identifcation = htons( ID ); // TODO: Check hdr->TTL = DEFAULT_TTL; @@ -70,9 +83,9 @@ int IPv4_SendPacket(tInterface *Iface, tIPv4 Address, int Protocol, int ID, int hdr->HeaderChecksum = 0; // Will be set later hdr->Source = Iface->IP4.Address; hdr->Destination = Address; - hdr->HeaderChecksum = htons( IPv4_Checksum(hdr, sizeof(tIPv4Header)) ); + hdr->HeaderChecksum = IPv4_Checksum(hdr, sizeof(tIPv4Header)); - Log("[IPv4 ] Sending packet to %i.%i.%i.%i", + Log_Log("IPv4", "Sending packet to %i.%i.%i.%i", Address.B[0], Address.B[1], Address.B[2], Address.B[3]); Link_SendPacket(Iface->Adapter, IPV4_ETHERNET_ID, to, bufSize, buf); return 1; @@ -90,23 +103,25 @@ void IPv4_int_GetPacket(tAdapter *Adapter, tMacAddr From, int Length, void *Buff int dataLength; if(Length < sizeof(tIPv4Header)) return; - //Log("[IPv4 ] Version = %i", hdr->Version); - Log("[IPv4 ] HeaderLength = %i", hdr->HeaderLength); - Log("[IPv4 ] DiffServices = %i", hdr->DiffServices); - Log("[IPv4 ] TotalLength = %i", ntohs(hdr->TotalLength) ); - //Log("[IPv4 ] Identifcation = %i", ntohs(hdr->Identifcation) ); - //Log("[IPv4 ] TTL = %i", hdr->TTL ); - Log("[IPv4 ] Protocol = %i", hdr->Protocol ); - //Log("[IPv4 ] HeaderChecksum = 0x%x", ntohs(hdr->HeaderChecksum) ); - Log("[IPv4 ] Source = %i.%i.%i.%i", + #if 0 + //Log_Log("IPv4", "Version = %i", hdr->Version); + //Log_Log("IPv4", "HeaderLength = %i", hdr->HeaderLength); + //Log_Log("IPv4", "DiffServices = %i", hdr->DiffServices); + Log_Log("IPv4", "TotalLength = %i", ntohs(hdr->TotalLength) ); + //Log_Log("IPv4", "Identifcation = %i", ntohs(hdr->Identifcation) ); + //Log_Log("IPv4", "TTL = %i", hdr->TTL ); + Log_Log("IPv4", "Protocol = %i", hdr->Protocol ); + //Log_Log("IPv4", "HeaderChecksum = 0x%x", ntohs(hdr->HeaderChecksum) ); + Log_Log("IPv4", "Source = %i.%i.%i.%i", hdr->Source.B[0], hdr->Source.B[1], hdr->Source.B[2], hdr->Source.B[3] ); - Log("[IPv4 ] Destination = %i.%i.%i.%i", + Log_Log("IPv4", "Destination = %i.%i.%i.%i", hdr->Destination.B[0], hdr->Destination.B[1], hdr->Destination.B[2], hdr->Destination.B[3] ); - + #endif + // Check that the version IS IPv4 if(hdr->Version != 4) { - Log("[IPv4 ] hdr->Version(%i) != 4", hdr->Version); + Log_Log("IPv4", "hdr->Version(%i) != 4", hdr->Version); return; } @@ -115,14 +130,14 @@ void IPv4_int_GetPacket(tAdapter *Adapter, tMacAddr From, int Length, void *Buff // Check Packet length if( ntohs(hdr->TotalLength) > Length) { - Log("[IPv4 ] hdr->TotalLength(%i) > Length(%i)", ntohs(hdr->TotalLength), Length); + Log_Log("IPv4", "hdr->TotalLength(%i) > Length(%i)", ntohs(hdr->TotalLength), Length); return; } // Get Interface (allowing broadcasts) iface = IPv4_GetInterface(Adapter, hdr->Destination, 1); if(!iface) { - Log("[IPv4 ] Ignoring Packet (Not for us)"); + Log_Log("IPv4", "Ignoring Packet (Not for us)"); return; // Not for us? Well, let's ignore it } @@ -136,7 +151,7 @@ void IPv4_int_GetPacket(tAdapter *Adapter, tMacAddr From, int Length, void *Buff if( gaIPv4_Callbacks[hdr->Protocol] ) gaIPv4_Callbacks[hdr->Protocol] (iface, &hdr->Source, dataLength, data); else - Log("[IPv4 ] Unknown Protocol %i", hdr->Protocol); + Log_Log("IPv4", "Unknown Protocol %i", hdr->Protocol); } /** @@ -202,8 +217,6 @@ Uint16 IPv4_Checksum(void *Buf, int Size) Uint16 *arr = Buf; int i; - Log("IPv4_Checksum: (%p, %i)", Buf, Size); - Size = (Size + 1) >> 1; for(i = 0; i < Size; i++ ) { @@ -211,7 +224,7 @@ Uint16 IPv4_Checksum(void *Buf, int Size) sum ++; // Simulate 1's complement sum += arr[i]; } - return htons( ~sum ); + return ~sum ; } /**