--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/linklayerprotocols/ethernetnif/EthInt/CLanIp6Bearer.cpp Tue Jan 26 15:23:49 2010 +0200
@@ -0,0 +1,259 @@
+// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// Implementation CLanIp6Bearer class, a derived from CLanxBearer.
+// History
+// 15/11/01 Started by Julian Skidmore.
+// 11/03 Refactored as part of the DHCP relocation work
+//
+//
+
+/**
+ @file
+*/
+
+#include <in_sock.h> // Header is retained, but in_sock.h is modified for ipv6
+#include <in6_if.h>
+#include <in_pkt.h>
+#include <comms-infras/connectionsettings.h>
+#include "CLanIp6Bearer.h"
+#include "EthProto.h"
+#include <comms-infras/es_protbinder.h>
+#include "EthProvision.h"
+
+using namespace ESock;
+
+/**
+Required ConstructL() method. Performs the following:
+" Sets a unique name for this binder instance in the iIfName field - "eth6[0x%x]" where "%x"
+ is the hexadecimal address of the "this" object.
+" Update the MAC address from link using UpdateMACAddr()
+" Reads CommDb settings (e.g. IPv6 static DNS configuration) from the LAN Service Table via
+ ReadCommDbLanSettingsL().
+*/
+void CLanIp6Bearer::ConstructL()
+{
+ iIfName.Format(_L("eth6[0x%08x]"), this);
+ UpdateMACAddr();
+ // ReadCommDbLanSettingsL() moved from here to point when provisioning information received
+}
+
+TInt CLanIp6Bearer::Control(TUint aLevel,TUint aName,TDes8& aOption)
+{
+ if ((aLevel==KCOLInterface) || (aLevel==KSOLInterface))
+ {
+ switch (aName)
+ {
+ case KSoIfHardwareAddr:
+ {
+ typedef TPckgBuf<TSoIfHardwareAddr> THwAddr;
+ THwAddr& theHwAddrRef=((THwAddr&)aOption);
+ THwAddr hwAddrCopy(theHwAddrRef);
+ theHwAddrRef().iHardwareAddr.SetFamily(1); // Set the address family type
+ theHwAddrRef().iHardwareAddr.SetLength(4); // The length of the family part.
+ theHwAddrRef().iHardwareAddr.Append(hwAddrCopy.Mid(12,4)); // set the hardware type in the port field
+ theHwAddrRef().iHardwareAddr.Append(Link()->MacAddress());
+ return KErrNone;
+ }
+ default:
+ return KErrNotSupported;
+ }
+ }
+ return KErrNotSupported;
+}
+
+/**
+ResolveMulticastIp6 is a helper method for Process. It takes a TSockAddr& destination address
+and a reference to the packet and generates a destination Mac address automatically from the
+destination Ip6 address, by applying the standard KMulticastPrefix (which is the byte sequence
+{0x33, 0x33}) and then appending bytes 12 to 15 of the Ip6 destination address.
+@param aDstAddr The destination address from the info header on the packet
+@param aPdu The Ip6 packet (actually an RMBufPacket).
+*/
+void CLanIp6Bearer::ResolveMulticastIp6(TSockAddr& aDstAddr,RMBufChain& aPdu)
+{
+ // We need to obtain the IPv6 header - i.e. the destination address.
+ // Octets 12 to 15 of the destination address, should be copied to
+ // Octets 2 to 5 of the aDstAddr.
+ // Octets 0 and 1 should be 0x3333.
+ TIpv6Header* header = (TIpv6Header*)aPdu.First()->Next()->Ptr();
+ //__ASSERT_DEBUG(header->GetVersion()==6, User::Panic(_L("Ether6:3"), 0));
+ TUint ix;
+ for(ix=0; ix<2; ix++)
+ {
+ aDstAddr[ix]=KMulticastPrefix[ix];
+ }
+ for(ix=2; ix<KMACByteLength; ix++)
+ {
+ aDstAddr[ix]=header->iDestAddrB[ix+10];
+ }
+}
+
+/**
+ShiftLinkLayerAddress is a helper method for Process. It takes a TSockAddr& destination address
+which already contains the correct information, but in the wrong place and copies bytes 8 to 1
+3 of the aDstAddr to 0 to 5 of aDstAddr.
+@param aDstAddr The destination address from the info header on the packet
+*/
+void CLanIp6Bearer::ShiftLinkLayerAddress(TSockAddr& aDstAddr)
+{
+ for(TUint ix=0; ix<KMACByteLength; ix++)
+ {
+ aDstAddr[ix]=aDstAddr[ix+8];
+ }
+}
+
+/**
+Call down from the Protocol
+Real Protocol data is in the second MBuf of the RMBufChain
+ARP will modify the first MBuf so it's ready for EtherXX Framing and
+will have inserted the dest MAC address if it could resolve it
+ARP send method returns KErrNotFound if it can't resolve and ARP
+hangs onto the packet data till the address is resolved at which
+point it calls us back to forward the pdu to the packet driver.
+Caller Flow controls off if the return to this method is <= 0
+@param aPdu A reference to the packet to be sent (really an RMBufPkt)
+@param aSource A pointer to the source protocol.
+@return The no. of bytes send.
+*/
+MLowerDataSender::TSendResult CLanIp6Bearer::Send(RMBufChain& aPdu)
+{
+ // Check that we are allowed to send data
+ if (!Link()->BearerIsActive(this))
+ {
+ aPdu.Free();
+ return ESendBlocked;
+ }
+
+ // just some checking.
+ RMBufPktInfo* info = RMBufPacket::PeekInfoInChain(aPdu);
+ TUint32 family = info->iDstAddr.Family();
+ __ASSERT_DEBUG(family!=KAfInet, User::Panic(_L("Ether6:1"), 0));
+ if(family==KAfInet6)
+ { // Have to generate the MAC as described in
+ ResolveMulticastIp6(info->iDstAddr,aPdu); //the RFC2464, section 7.
+ }
+ else if (family==0x1)
+ {
+ ShiftLinkLayerAddress(info->iDstAddr);
+ }
+ return static_cast<MLowerDataSender::TSendResult>(Link()->FrameSend(aPdu,NULL,KIP6FrameType));
+}
+
+/**
+WantsProtocol, takes an ethernet aProtocolCode code and the initial part of the packet's
+payload as input and returns ETrue if the bearer wants the packet of this type of protocol
+and payload, or EFalse otherwise. CLanIp6Bearer wants the protocol if it is an Arp message or
+an Ip6 protocol (an Ip protocol, whose Version field == 6). WantsProtocol also sets
+iArpMsgNext to ETrue if the protocol was Arp or EFalse otherwise.
+@param aProtocolCode The Ethernet protocol Type.
+@param aPayload A pointer to the beginning of the packet payload.
+@return sets iArpMsgNext to ETrue if the protocol was Arp or EFalse otherwise.
+*/
+TBool CLanIp6Bearer::WantsProtocol(TUint16 aProtocolCode,const TUint8* aPayload)
+{
+ return (aProtocolCode==KIP6FrameType && (aPayload[0]>>4)==KIP6Protocol) ? ETrue:EFalse;
+}
+
+/**
+Process processes a packet received from the LinkLayer.
+@param aPdu The Packet to be sent (actually an RMBufPkt).
+@param aLLC Unclear.
+*/
+void CLanIp6Bearer::Process(RMBufChain& aPdu, TAny* /*aLLC*/)
+{
+ if(iUpperReceiver)
+ {
+ iUpperReceiver->Process(aPdu);
+ }
+ else
+ {
+ aPdu.Free();
+ }
+}
+
+void CLanIp6Bearer::UpdateMACAddr()
+{
+ TE64Addr myEuMac;
+ myEuMac.SetAddrFromEUI48(Link()->MacAddress().Ptr());
+ iEuiMac.SetAddress(myEuMac);
+}
+
+/**
+Read any static DNS configuration information from CommDb
+ReadCommDbLanSettingsL() reads CommDb settings from the LAN Service Table. In particular, it
+reads the fields related to IPv6 Static DNS configuration. The LAN_IP6_DNS_ADDR_FROM_SERVER
+field is a boolean that indicates whether IPv6 Static DNS configuration is required or not.
+If FALSE, then static configuration is required. In this case, the IPv6 primary and secondary
+DNS server addresses are read from the CommDb fields LAN_IP6_NAME_SERVER1 and LAN_IP6_NAME_SERVER2
+and stored in the iPrimaryDns and iSecondaryDns data members. They are later presented to
+the TCP/IP stack when the Control() method is called with the KSoIfConfig option.
+*/
+void CLanIp6Bearer::ReadCommDbLanSettingsL()
+{
+ ASSERT(iProvision);
+ iPrimaryDns = iProvision->PrimaryDns();
+ iSecondaryDns = iProvision->SecondaryDns();
+}
+
+TInt CLanIp6Bearer::GetConfig(TBinderConfig& aConfig)
+ {
+ TBinderConfig6* config = TBinderConfig::Cast<TBinderConfig6>(aConfig);
+
+ if(config == NULL)
+ {
+ return KErrNotSupported;
+ }
+
+ config->iFamily = KAfInet6;
+
+ config->iInfo.iFeatures = KIfNeedsND | KIfCanMulticast;
+ config->iInfo.iMtu = Link()->Mtu();
+ config->iInfo.iRMtu = Link()->Mtu();
+ config->iInfo.iSpeedMetric = Link()->SpeedMetric();
+
+ TEui64Addr& localId = TEui64Addr::Cast(config->iLocalId);
+ localId = iEuiMac;
+
+ // If required, configure static DNS addresses
+
+ if (!iPrimaryDns.IsUnspecified())
+ {
+ config->iNameSer1.SetAddress(iPrimaryDns);
+ if (!iSecondaryDns.IsUnspecified())
+ config->iNameSer2.SetAddress(iSecondaryDns);
+ }
+
+ return KErrNone;
+ }
+
+const TDesC8& CLanIp6Bearer::ProtocolName() const
+/**
+Return the protocol name of this bearer
+
+Called from CLANLinkCommon
+*/
+ {
+ _LIT8(KProtocolName, "ip6");
+ return KProtocolName();
+ }
+
+void CLanIp6Bearer::SetProvisionL(const Meta::SMetaData* aProvision)
+ {
+ if (iProvision == NULL)
+ {
+ iProvision = static_cast<const TLanIp6Provision*>(aProvision);
+ ReadCommDbLanSettingsL();
+ }
+ }
+