author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 15 Sep 2010 13:53:10 +0300 | |
branch | RCL_3 |
changeset 67 | bb2423252ea3 |
parent 5 | 1422c6cd3f0c |
child 75 | c1029e558ef5 |
permissions | -rw-r--r-- |
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// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// in_pkt.cpp - packet handling routines |
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// Mainly the RMBufPacketPeek implementation |
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// + extension header locations |
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// + method for adding a destination option |
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// |
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#include "in_pkt.h" |
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#include "in_pkt_platform.h" |
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#include "ext_hdr.h" |
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#include <nifmbuf.h> |
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#define OPTIMIZE_PADDING |
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// RMBufPacketPeek |
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// *************** |
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EXPORT_C TUint8 *TInet6PacketBase::Access(RMBufChain &aPacket, TInt aOffset, TInt aSize, TInt aMin) |
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/** |
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* Accesses a contiguous block of memory within RMBufChain starting |
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* at specified offset. |
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* |
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* Attempts to map aSize amount of contiguous RMBuf space at |
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* the specified offset, by rearranging the RMBufs, |
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* if necessary. |
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* |
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* If aSize amount is not available, the returned pointer maps |
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* the maximum available space (< aSize). |
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* |
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* @param aSize |
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* The size of the requested contiguous mapping (in octets). |
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* The value cannot be larger than KMBufSmallSize. If aSize <= 1, |
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* the method will return availabe contiguous mapping at the |
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* indicated offset without rearranging the RMBuf chain. Values |
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* larger than 1 may require rearrangement to get the requested |
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* area into single RMBuf. |
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* @param aOffset |
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* The offset to the beginning of the area. The value MUST |
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* be in range: 0 <= aOffset <= Length(). |
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* @param aMin |
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* The minimum accepted iLength. If iLength is less that aMin, |
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* then returns NULL. |
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* @return |
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* A pointer to the data starting at indicated |
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* offset. The iLength is set to the |
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* maximum available contiguous data starting from the |
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* requested offset. iLength is always <= KMBufSmallSize. |
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* @note |
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* The length can be either less or |
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* larger than aSize. The caller must verify the returned |
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* length to detect whether Access succeeded. |
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*/ |
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{ |
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|
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// |
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// Can only map at most KMBufSmallSize bytes |
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// (truncate aSize to avoid Panics from the Align) |
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// |
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if (aSize > KMBufSmallSize) |
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aSize = KMBufSmallSize; |
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for (int already_tried = 0; ;already_tried = 1) |
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{ |
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RMBuf *p; |
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TInt offset, len; |
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iLength = 0; |
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if (aPacket.IsEmpty() || !aPacket.Goto(aOffset, p, offset, len)) |
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return NULL; |
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else if ((aSize <= len && (offset & iAlign) == 0) || already_tried) |
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{ |
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if (len < aMin) |
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return NULL; |
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iLength = len; |
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return p->Buffer() ? (p->Buffer()+ offset): NULL; |
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} |
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// The requested alignment value is not |
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// satisfied! |
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// |
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// Brute force buffer mangling here: just |
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// Split the chain at requested point, apply |
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// align to the tail part, and then join the |
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// pieces together (assuming this join operation |
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// does not undo the align...) |
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// (If this is going to occur frequently |
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// some optimizations is in order... -- msa) |
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// |
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// |
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// *NOTE* |
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// If aOffset == 0, SplitL works weird (IMHO): it does |
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// nothing (when it logically should move all to the |
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105 |
// tail part!). Thus, zero offset needs to be handled |
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// specially (sort of optimizing, so it's not too bad) |
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// -- msa |
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108 |
// |
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if (aOffset > 0) |
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110 |
{ |
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RMBufChain tail; |
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TInt err = aPacket.Split(aOffset, tail); |
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if (err == KErrNone && !tail.IsEmpty()) |
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114 |
{ |
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tail.Align(aSize); |
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aPacket.Append(tail); |
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} |
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118 |
} |
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119 |
else |
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120 |
aPacket.Align(aSize); |
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121 |
// And now just retry the Goto and use that |
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// result as is (either we succeeded or not) |
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123 |
} |
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124 |
} |
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125 |
|
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EXPORT_C TPtr8 RMBufPacketPeek::Access(TInt aSize, TUint aOffset) |
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127 |
/** |
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* Accesses a contiguous block of memory within RMBufChain starting |
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* at specified offset. |
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* |
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* Attempts to map aSize amount of contiguous RMBuf space at |
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* the specified offset into a TPtr8, by rearranging the RMBufs, |
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* if necessary. |
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134 |
* |
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* If aSize amount is not available, the returned pointer maps |
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* the maximum available space (< aSize). |
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* |
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138 |
* @param aSize |
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* The size of the requested contiguous mapping (in octets). |
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* The value cannot be larger than KMBufSmallSize. If aSize <= 1, |
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* the method will return availabe contiguous mapping at the |
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* indicated offset without rearranging the RMBuf chain. Values |
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* larger than 1 may require rearrangement to get the requested |
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* area into single RMBuf. |
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* @param aOffset |
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* The offset to the beginning of the area. The value MUST |
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* be in range: 0 <= aOffset <= Length(). |
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* @return |
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* A pointer descriptor for the data starting at indicated |
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* offset. The length of the descriptor is set to the |
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* maximum available contiguous data starting from the |
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* requested offset. Length is always <= KMBufSmallSize. |
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* @note |
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* The length can be either less or |
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* larger than aSize. The caller must verify the returned |
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* length to detect whether Access succeeded. |
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157 |
*/ |
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158 |
{ |
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159 |
TInet6PacketBase map(TInet6PacketBase::EAlign1); |
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TUint8 *const ptr = map.Access(*this, aOffset, aSize, 1); |
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161 |
return TPtr8(ptr, map.iLength, map.iLength); |
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162 |
} |
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163 |
|
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164 |
|
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165 |
EXPORT_C TIpHeader *RMBufPacketPeek::GetIpHeader() |
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166 |
/** |
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167 |
* Access IP header (v4 or v6) from the packet at offset 0. |
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168 |
* |
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169 |
* @return IP header (or NULL). |
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* A non-NULL return implies that full header, either IPv4 or |
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171 |
* IPv6 is accessible through the pointer. This method is |
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172 |
* intended to save code space, and not necessarily for |
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173 |
* speed... |
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174 |
*/ |
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175 |
{ |
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176 |
TInet6Packet<TIpHeader> ip(*this); |
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177 |
if (ip.iHdr) |
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178 |
{ |
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179 |
if (ip.iHdr->ip4.Version() == 4) |
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180 |
{ |
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181 |
// Need to do sanity check on header length (because it can be garbage) |
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const TInt hlen = ip.iHdr->ip4.HeaderLength(); |
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183 |
if (hlen >= TInet6HeaderIP4::MinHeaderLength() && ip.iLength >= hlen) |
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184 |
return (TIpHeader *)ip.iHdr; |
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185 |
} |
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186 |
else if (ip.iHdr->ip4.Version() == 6) |
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187 |
{ |
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188 |
if (ip.iLength >= TInet6HeaderIP::MinHeaderLength()) |
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189 |
return (TIpHeader *)ip.iHdr; |
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190 |
} |
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191 |
} |
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192 |
return NULL; |
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193 |
} |
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194 |
|
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195 |
// TPacketPocker |
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196 |
// ************* |
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197 |
|
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198 |
EXPORT_C TPacketPoker::TPacketPoker(RMBufChain &aChain) : iCurrent(aChain.First()), iOffset(0), iTail(0) |
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199 |
/** |
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200 |
* Constructor. |
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201 |
* |
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202 |
* @param aChain The RMBuf chain to be poked. |
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203 |
*/ |
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204 |
{ |
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205 |
// Find initial value for iTail. |
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206 |
while (iCurrent) |
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207 |
{ |
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208 |
iTail = iCurrent->Length(); |
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209 |
if (iTail > 0) |
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210 |
break; |
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// Ugh. There have been RMBuf's with ZERO length! |
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iCurrent = iCurrent->Next(); |
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} |
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} |
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215 |
|
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EXPORT_C void TPacketPoker::OverL(TInt aSize) |
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/** |
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* Skip over bytes. |
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* |
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* @param aSize The number of bytes to skip |
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* @leave KErrEof, if skipped past end of chain. |
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*/ |
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223 |
{ |
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224 |
for (;;) |
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225 |
{ |
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if (aSize < iTail) |
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227 |
{ |
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iTail -= aSize; // Results always: iTail > 0! |
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iOffset += aSize; |
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return; |
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} |
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aSize -= iTail; |
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if ((iCurrent = iCurrent->Next()) == NULL) |
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{ |
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iTail = 0; // All scanned, at end of chain |
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if (aSize > 0) // --> Error, if request was more |
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User::Leave(KErrEof); // KErrEof used (for lack of any better) |
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return; |
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} |
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iOffset = 0; |
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iTail = iCurrent->Length(); |
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} |
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} |
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244 |
|
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EXPORT_C TUint8 *TPacketPoker::AdjustL(TInt aSize) |
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/** |
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* Arrange contiguous run of bytes. |
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* |
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* Arragen content of RMBuf chain so that starting from |
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* the current offset, a number of bytes is accessible |
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* in contiguous memory. |
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* |
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* @param aSize The requested length, |
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* @return The pointer to be beginning of area. |
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* @leave KErrEof, if request cannot be satisfied. |
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*/ |
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257 |
{ |
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RMBufChain chain(iCurrent); |
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if (iOffset > 0) |
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{ |
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RMBufChain tail; |
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chain.SplitL(iOffset, tail); |
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tail.Align(aSize); |
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chain.Append(tail); |
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} |
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else |
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chain.Align(aSize); |
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ASSERT(iCurrent == chain.First()); |
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iTail = iCurrent->Length() - iOffset; |
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if (iTail < aSize) // Align failed? |
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User::Leave(KErrEof); // KErrEof used (for lack of any better) |
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return Ptr(); |
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} |
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274 |
|
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// |
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276 |
|
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EXPORT_C TBool TPacketPoker::IsExtensionHeader(TInt aProtocolId) |
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/** |
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* Tests whether a protocol is a known IPv6 extension header using the standard format. |
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* |
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* @param aProtocolId Protocol ID to test. |
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* @return ETrue, |
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* if the protocol header follows the generic IPv6 extension |
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* header format (TInet6HeaderExtension). |
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*/ |
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286 |
{ |
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// If more of these are known, could perhaps implement a |
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// static boolean table indexed by protocol -- msa |
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289 |
return |
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290 |
( |
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aProtocolId == STATIC_CAST(TInt, KProtocolInet6HopOptions) || |
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aProtocolId == STATIC_CAST(TInt, KProtocolInet6DestinationOptions) || |
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aProtocolId == STATIC_CAST(TInt, KProtocolInet6RoutingHeader) |
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294 |
); |
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295 |
} |
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296 |
|
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297 |
// TPacketHead |
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// *********** |
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299 |
|
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EXPORT_C TBool TPacketHead::ExtHdrGet(TInt aType, TInt& aOfs, TInt& aLen) |
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301 |
/** |
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* Gets the offset and length of an extension header. |
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* |
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* @param aType Extension header type |
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* @retval aOfs On return, the header offset |
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* @retval aLen On return, the header length |
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* @return ETrue if the header was found, otherwise EFalse |
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*/ |
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309 |
{ |
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if (iPacket.IsEmpty()) |
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return EFalse; |
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312 |
|
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TInt type = ip6.NextHeader(); |
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TInt ofs = 0; |
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315 |
|
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316 |
while (TPacketPoker::IsExtensionHeader(type) && ofs<iOffset) |
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317 |
{ |
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changeset
|
318 |
//TInet6Options is about as generic Extension Header class as possible. |
af10295192d8
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diff
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|
319 |
//Thus no need to create another one. |
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Revision: 201004
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parents:
diff
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|
320 |
TInet6Packet<TInet6Options> hdr(iPacket, ofs); |
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parents:
diff
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|
321 |
if (hdr.iHdr == NULL) return EFalse; |
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parents:
diff
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|
322 |
|
af10295192d8
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parents:
diff
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|
323 |
if (type == aType) |
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diff
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|
324 |
{ |
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Revision: 201004
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parents:
diff
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|
325 |
aOfs = ofs; |
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diff
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|
326 |
aLen = hdr.iHdr->HeaderLength(); |
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parents:
diff
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|
327 |
return ETrue; |
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Revision: 201004
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parents:
diff
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|
328 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
329 |
type = hdr.iHdr->NextHeader(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
330 |
ofs += hdr.iHdr->HeaderLength(); |
af10295192d8
Revision: 201004
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parents:
diff
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|
331 |
} |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
332 |
return EFalse; |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
333 |
} |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
334 |
|
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
335 |
EXPORT_C TBool TPacketHead::ExtHdrGetOrPrependL(TInt aType, TInt& aOfs, TInt& aLen) |
af10295192d8
Revision: 201004
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parents:
diff
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|
336 |
/** |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
337 |
* Gets the offset and length of an extension header, or if it doesn't already |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
338 |
* exist, creates the header before all other extension headers. |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
339 |
* |
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parents:
diff
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|
340 |
* @param aType |
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Revision: 201004
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parents:
diff
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|
341 |
* Extension header type |
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Revision: 201004
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parents:
diff
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|
342 |
* @retval aOfs |
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Revision: 201004
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parents:
diff
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|
343 |
* If the header is created, this specifies the header offset. If |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
344 |
* the header already exists, on return: the actual header offset. |
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Revision: 201004
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parents:
diff
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|
345 |
* @retval aLen |
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Revision: 201004
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parents:
diff
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|
346 |
* If the header is created, this specifies the header length. If |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
347 |
* the header already exists, on return: the actual header length. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
348 |
* @return |
af10295192d8
Revision: 201004
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parents:
diff
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|
349 |
* ETrue if the header was found, EFalse if the header was created. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
350 |
*/ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
351 |
{ |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
352 |
if (ExtHdrGet(aType, aOfs, aLen)) |
af10295192d8
Revision: 201004
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parents:
diff
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|
353 |
return ETrue; |
af10295192d8
Revision: 201004
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parents:
diff
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|
354 |
ASSERT(aLen && ((aLen & 7) == 0)); |
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Revision: 201004
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parents:
diff
changeset
|
355 |
|
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
356 |
if (iPacket.IsEmpty()) |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
357 |
{ |
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Revision: 201004
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parents:
diff
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|
358 |
iPacket.AllocL(aLen); |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
359 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
360 |
else |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
361 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
362 |
iPacket.PrependL(aLen); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
363 |
} |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
364 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
365 |
//Zero out the header |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
366 |
iPacket.FillZ(aLen); |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
367 |
TInet6Packet<TInet6Options> hdr(iPacket, 0); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
368 |
if (hdr.iHdr == NULL) |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
369 |
{ |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
370 |
iPacket.TrimStart(aLen); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
371 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
372 |
} |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
373 |
|
af10295192d8
Revision: 201004
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parents:
diff
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|
374 |
hdr.iHdr->SetNextHeader(ip6.NextHeader()); |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
375 |
ip6.SetNextHeader(aType); |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
376 |
hdr.iHdr->SetHdrExtLen((aLen >> 3) - 1); |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
377 |
|
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
378 |
aOfs = 0; |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
379 |
iOffset += aLen; |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
380 |
return EFalse; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
381 |
} |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
382 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
383 |
EXPORT_C TBool TPacketHead::ExtHdrGetOrAppendL(TInt aType, TInt& aOfs, TInt& aLen) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
384 |
/** |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
385 |
* Gets the offset and length of an extension header, or if it doesn't already |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
* exist, creates the header after all other extension headers. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
387 |
* |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
388 |
* @param aType Extension header type |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
389 |
* @retval aOfs |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
390 |
* If the header is created, this specifies the header offset. If |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
* the header already exists, on return, the actual header offset. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |
* @retval aLen |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
393 |
* If the header is created, this specifies the header length. If |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
394 |
* the header already exists, on return, the actual header length. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
395 |
* @return ETrue if the header was found, EFalse if the header was created |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
396 |
*/ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
if (ExtHdrGet(aType, aOfs, aLen)) return ETrue; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
399 |
if (iPacket.IsEmpty()) return ExtHdrGetOrPrependL(aType, aOfs, aLen); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
400 |
ASSERT(aLen && ((aLen & 7) == 0)); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
402 |
TInt nxt = ip6.NextHeader(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
TInt ofs = 0; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
FOREVER |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
TInet6Packet<TInet6Options> hdr(iPacket, ofs); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
if (hdr.iHdr == NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
409 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
410 |
nxt = hdr.iHdr->NextHeader(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
411 |
ofs += hdr.iHdr->HeaderLength(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
412 |
if (ofs >= iOffset) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
hdr.iHdr->SetNextHeader(aType); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
break; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
416 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
RMBufChain tail; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
tail.AllocL(aLen); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
tail.FillZ(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
422 |
iPacket.Append(tail); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
TInet6Packet<TInet6Options> hdr(iPacket, iOffset); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
if (hdr.iHdr == NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
iPacket.TrimEnd(iOffset); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
430 |
hdr.iHdr->SetNextHeader(nxt); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
431 |
hdr.iHdr->SetHdrExtLen((aLen >> 3) - 1); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
aOfs = iOffset; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
iOffset += aLen; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
return EFalse; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
437 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
// |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
// TODO: Possibility to replace existing padding with an option which |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
// would preserve the alignment. (eg. Home Address is kind of Pad2) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
// |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
EXPORT_C void TPacketHead::AddDestinationOptionL(const TUint8* aOption, TUint8 aLen, TUint8 aAlign/*=0*/, TUint8 aModulo/*=4*/) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
/** |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
* Adds a Destination Option extension header option. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
* |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
* If no Destination Option extension header already exists, one is created |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
* as the first extension header. The option is aligned according to the |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
* specified aAlign and aModulo parameters. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
* |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
* @param aOption |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
* Option Data |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
* @param aLen |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
* Option Data length |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
* @param aAlign |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
456 |
* Option alignment requirement. The default is no alignment. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
457 |
* @param aModulo |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
458 |
* Option must start at an octect position which is a multiple |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
459 |
* of the specified value |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
460 |
*/ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
461 |
TPtrC8 ptr(aOption, aLen); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
462 |
AddDestinationOptionL(ptr, aAlign, aModulo); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
463 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
464 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
465 |
EXPORT_C void TPacketHead::AddDestinationOptionL(const TPtrC8& aOption, TUint8 aAlign/*=0*/, TUint8 aModulo/*=4*/) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
/** |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
* Adds a Destination Option extension header option. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
468 |
* |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
* If no Destination Option extension header already exists, one is |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
470 |
* created as the first extension header. The option is aligned |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
471 |
* according to the specified aAlign and aModulo parameters. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
472 |
* |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
473 |
* @param aOption |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
474 |
* Pointer to the start of the Option Data |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
475 |
* @param aAlign |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
476 |
* Option alignment requirement. The default is no alignment. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
477 |
* @param aModulo |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
478 |
* Option must start at an octect position which is a multiple |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
479 |
* of the specified value |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
480 |
*/ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
481 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
TUint padlen = aAlign?(TUint(aAlign - 2) % aModulo):0; //Leading pad |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
483 |
TInt len = 2 + padlen + aOption.Length(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
484 |
TInt trailpad = (8 - (len & 7)) & 7; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
485 |
len += trailpad; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
486 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
487 |
TInt ofs; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
488 |
if (! ExtHdrGetOrAppendL(KProtocolInet6DestinationOptions, ofs, len)) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
489 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
490 |
//Simple case, new header was allocated and initialized with required length. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
491 |
//Just put the option in. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
492 |
ofs += 2; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
493 |
#ifdef OPTIMIZE_PADDING |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
494 |
if (padlen > 1) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
495 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
496 |
TInet6Packet<TInet6OptionBase> pad(iPacket, ofs); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
497 |
if (pad.iHdr == NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
498 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
499 |
pad.iHdr->SetType(KDstOptionPadN); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
500 |
pad.iHdr->SetDataLen(padlen - 2); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
501 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
502 |
#endif |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
503 |
ofs += padlen; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
504 |
iPacket.CopyIn(aOption, ofs); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
#ifdef OPTIMIZE_PADDING |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
506 |
ofs += aOption.Length(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
if (trailpad > 1) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
TInet6Packet<TInet6OptionBase> pad(iPacket, ofs); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
if (pad.iHdr == NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
pad.iHdr->SetType(KDstOptionPadN); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
pad.iHdr->SetDataLen(trailpad - 2); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
515 |
#endif |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
516 |
return; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
//Now we have the position and size of the header |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
TInet6Packet<TInet6Options> opt(iPacket, ofs); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
521 |
if (opt.iHdr == NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
//padlen = leading pad |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
ofs += len; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
padlen = aAlign?(TUint(aAlign - ofs) % aModulo):0; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
TInt size = padlen + aOption.Length(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
528 |
trailpad = (8 - (size & 7)) & 7; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
529 |
size += trailpad; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
530 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
531 |
RMBufChain pkt; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
532 |
pkt.AllocL(size); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
pkt.FillZ(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
#ifdef OPTIMIZE_PADDING |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
//Optimize leading pad |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
536 |
if (padlen > 1) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
537 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
TInet6Packet<TInet6OptionBase> pad(pkt, 0); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
539 |
if (pad.iHdr == NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
540 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
pad.iHdr->SetType(KDstOptionPadN); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
pad.iHdr->SetDataLen(padlen - 2); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
//Optimize trailing pad |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
if (trailpad > 1) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
547 |
TInet6Packet<TInet6OptionBase> pad(pkt, padlen+aOption.Length()); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
548 |
if (pad.iHdr == NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
549 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
550 |
pad.iHdr->SetType(KDstOptionPadN); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
551 |
pad.iHdr->SetDataLen(trailpad - 2); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
552 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
553 |
#endif |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
554 |
pkt.CopyIn(aOption, padlen); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
iPacket.Append(pkt); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
558 |
iOffset += size; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
opt.iHdr->SetHdrExtLen(opt.iHdr->HdrExtLen() + (size >> 3)); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
} |