3 * - IPv6 Protcol Handling
10 extern tInterface *gIP_Interfaces;
11 extern Uint32 IPv4_Netmask(int FixedBits);
14 int IPv6_Initialise();
15 void IPv6_int_GetPacket(tAdapter *Interface, tMacAddr From, int Length, void *Buffer);
16 tInterface *IPv6_GetInterface(tAdapter *Adapter, tIPv6 Address, int Broadcast);
20 * \fn int IPv6_Initialise()
24 Link_RegisterType(IPV6_ETHERNET_ID, IPv6_int_GetPacket);
29 * \fn void IPv6_int_GetPacket(tInterface *Interface, tMacAddr From, int Length, void *Buffer)
30 * \brief Process an IPv6 Packet
32 void IPv6_int_GetPacket(tAdapter *Interface, tMacAddr From, int Length, void *Buffer)
34 tIPv6Header *hdr = Buffer;
35 if(Length < sizeof(tIPv6Header)) return;
37 if(hdr->Version != 6) return;
41 * \fn tInterface *IPv6_GetInterface(tAdapter *Adapter, tIPv6 Address)
42 * \brief Searches an adapter for a matching address
44 tInterface *IPv6_GetInterface(tAdapter *Adapter, tIPv6 Address, int Broadcast)
47 tInterface *iface = NULL;
50 for( iface = gIP_Interfaces; iface; iface = iface->Next)
52 // Check for this adapter
53 if( iface->Adapter != Adapter ) continue;
55 // Skip non-IPv6 Interfaces
56 if( iface->Type != 6 ) continue;
58 // If the address is a perfect match, return this interface
59 if( IP6_EQU(Address, iface->IP6.Address) ) return iface;
61 // Check if we want to match broadcast addresses
62 if( !Broadcast ) continue;
64 // Check for broadcast
65 if( iface->IP6.SubnetBits > 32 && Address.L[0] != iface->IP6.Address.L[0] )
67 if( iface->IP6.SubnetBits > 64 && Address.L[1] != iface->IP6.Address.L[1] )
69 if( iface->IP6.SubnetBits > 96 && Address.L[2] != iface->IP6.Address.L[2] )
72 j = iface->IP6.SubnetBits / 32;
73 i = iface->IP6.SubnetBits % 32;
74 netmask = IPv4_Netmask( iface->IP6.SubnetBits % 32 );
76 // Check the last bit of the netmask
77 if( (Address.L[j] >> i) != (iface->IP6.Address.L[j] >> i) ) continue;
79 // Check that the host portion is one
80 if( (Address.L[j] & ~netmask) != (0xFFFFFFFF & ~netmask) ) continue;
81 if( j >= 2 && Address.L[3] != 0xFFFFFFFF) continue;
82 if( j >= 1 && Address.L[2] != 0xFFFFFFFF) continue;
83 if( j >= 0 && Address.L[1] != 0xFFFFFFFF) continue;