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- /** @file
- Implement IP6 pseudo interface.
- Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include "Ip6Impl.h"
- /**
- Request Ip6OnFrameSentDpc as a DPC at TPL_CALLBACK.
- @param[in] Event The transmit token's event.
- @param[in] Context The Context which is pointed to the token.
- **/
- VOID
- EFIAPI
- Ip6OnFrameSent (
- IN EFI_EVENT Event,
- IN VOID *Context
- );
- /**
- Fileter function to cancel all the frame related to an IP instance.
- @param[in] Frame The transmit request to test whether to cancel.
- @param[in] Context The context which is the Ip instance that issued
- the transmit.
- @retval TRUE The frame belongs to this instance and is to be
- removed.
- @retval FALSE The frame doesn't belong to this instance.
- **/
- BOOLEAN
- Ip6CancelInstanceFrame (
- IN IP6_LINK_TX_TOKEN *Frame,
- IN VOID *Context
- )
- {
- if (Frame->IpInstance == (IP6_PROTOCOL *)Context) {
- return TRUE;
- }
- return FALSE;
- }
- /**
- Set the interface's address. This will trigger the DAD process for the
- address to set. To set an already set address, the lifetimes wil be
- updated to the new value passed in.
- @param[in] Interface The interface to set the address.
- @param[in] Ip6Addr The interface's to be assigned IPv6 address.
- @param[in] IsAnycast If TRUE, the unicast IPv6 address is anycast.
- Otherwise, it is not anycast.
- @param[in] PrefixLength The prefix length of the Ip6Addr.
- @param[in] ValidLifetime The valid lifetime for this address.
- @param[in] PreferredLifetime The preferred lifetime for this address.
- @param[in] DadCallback The caller's callback to trigger when DAD finishes.
- This is an optional parameter that may be NULL.
- @param[in] Context The context that will be passed to DadCallback.
- This is an optional parameter that may be NULL.
- @retval EFI_SUCCESS The interface is scheduled to be configured with
- the specified address.
- @retval EFI_OUT_OF_RESOURCES Failed to set the interface's address due to
- lack of resources.
- **/
- EFI_STATUS
- Ip6SetAddress (
- IN IP6_INTERFACE *Interface,
- IN EFI_IPv6_ADDRESS *Ip6Addr,
- IN BOOLEAN IsAnycast,
- IN UINT8 PrefixLength,
- IN UINT32 ValidLifetime,
- IN UINT32 PreferredLifetime,
- IN IP6_DAD_CALLBACK DadCallback OPTIONAL,
- IN VOID *Context OPTIONAL
- )
- {
- IP6_SERVICE *IpSb;
- IP6_ADDRESS_INFO *AddressInfo;
- LIST_ENTRY *Entry;
- IP6_PREFIX_LIST_ENTRY *PrefixEntry;
- UINT64 Delay;
- IP6_DELAY_JOIN_LIST *DelayNode;
- NET_CHECK_SIGNATURE (Interface, IP6_INTERFACE_SIGNATURE);
- IpSb = Interface->Service;
- if (Ip6IsOneOfSetAddress (IpSb, Ip6Addr, NULL, &AddressInfo)) {
- ASSERT (AddressInfo != NULL);
- //
- // Update the lifetime.
- //
- AddressInfo->ValidLifetime = ValidLifetime;
- AddressInfo->PreferredLifetime = PreferredLifetime;
- if (DadCallback != NULL) {
- DadCallback (TRUE, Ip6Addr, Context);
- }
- return EFI_SUCCESS;
- }
- AddressInfo = (IP6_ADDRESS_INFO *)AllocatePool (sizeof (IP6_ADDRESS_INFO));
- if (AddressInfo == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- AddressInfo->Signature = IP6_ADDR_INFO_SIGNATURE;
- IP6_COPY_ADDRESS (&AddressInfo->Address, Ip6Addr);
- AddressInfo->IsAnycast = IsAnycast;
- AddressInfo->PrefixLength = PrefixLength;
- AddressInfo->ValidLifetime = ValidLifetime;
- AddressInfo->PreferredLifetime = PreferredLifetime;
- if (AddressInfo->PrefixLength == 0) {
- //
- // Find an appropriate prefix from on-link prefixes and update the prefixlength.
- // Longest prefix match is used here.
- //
- NET_LIST_FOR_EACH (Entry, &IpSb->OnlinkPrefix) {
- PrefixEntry = NET_LIST_USER_STRUCT (Entry, IP6_PREFIX_LIST_ENTRY, Link);
- if (NetIp6IsNetEqual (&PrefixEntry->Prefix, &AddressInfo->Address, PrefixEntry->PrefixLength)) {
- AddressInfo->PrefixLength = PrefixEntry->PrefixLength;
- break;
- }
- }
- }
- if (AddressInfo->PrefixLength == 0) {
- //
- // If the prefix length is still zero, try the autonomous prefixes.
- // Longest prefix match is used here.
- //
- NET_LIST_FOR_EACH (Entry, &IpSb->AutonomousPrefix) {
- PrefixEntry = NET_LIST_USER_STRUCT (Entry, IP6_PREFIX_LIST_ENTRY, Link);
- if (NetIp6IsNetEqual (&PrefixEntry->Prefix, &AddressInfo->Address, PrefixEntry->PrefixLength)) {
- AddressInfo->PrefixLength = PrefixEntry->PrefixLength;
- break;
- }
- }
- }
- if (AddressInfo->PrefixLength == 0) {
- //
- // BUGBUG: Stil fail, use 64 as the default prefix length.
- //
- AddressInfo->PrefixLength = IP6_LINK_LOCAL_PREFIX_LENGTH;
- }
- //
- // Node should delay joining the solicited-node multicast address by a random delay
- // between 0 and MAX_RTR_SOLICITATION_DELAY (1 second).
- // Thus queue the address to be processed in Duplicate Address Detection module
- // after the delay time (in milliseconds).
- //
- Delay = (UINT64)NET_RANDOM (NetRandomInitSeed ());
- Delay = MultU64x32 (Delay, IP6_ONE_SECOND_IN_MS);
- Delay = RShiftU64 (Delay, 32);
- DelayNode = (IP6_DELAY_JOIN_LIST *)AllocatePool (sizeof (IP6_DELAY_JOIN_LIST));
- if (DelayNode == NULL) {
- FreePool (AddressInfo);
- return EFI_OUT_OF_RESOURCES;
- }
- DelayNode->DelayTime = (UINT32)(DivU64x32 (Delay, IP6_TIMER_INTERVAL_IN_MS));
- DelayNode->Interface = Interface;
- DelayNode->AddressInfo = AddressInfo;
- DelayNode->DadCallback = DadCallback;
- DelayNode->Context = Context;
- InsertTailList (&Interface->DelayJoinList, &DelayNode->Link);
- return EFI_SUCCESS;
- }
- /**
- Create an IP6_INTERFACE.
- @param[in] IpSb The IP6 service binding instance.
- @param[in] LinkLocal If TRUE, the instance is created for link-local address.
- Otherwise, it is not for a link-local address.
- @return Point to the created IP6_INTERFACE, otherwise NULL.
- **/
- IP6_INTERFACE *
- Ip6CreateInterface (
- IN IP6_SERVICE *IpSb,
- IN BOOLEAN LinkLocal
- )
- {
- EFI_STATUS Status;
- IP6_INTERFACE *Interface;
- EFI_IPv6_ADDRESS *Ip6Addr;
- NET_CHECK_SIGNATURE (IpSb, IP6_SERVICE_SIGNATURE);
- Interface = AllocatePool (sizeof (IP6_INTERFACE));
- if (Interface == NULL) {
- return NULL;
- }
- Interface->Signature = IP6_INTERFACE_SIGNATURE;
- Interface->RefCnt = 1;
- InitializeListHead (&Interface->AddressList);
- Interface->AddressCount = 0;
- Interface->Configured = FALSE;
- Interface->Service = IpSb;
- Interface->Controller = IpSb->Controller;
- Interface->Image = IpSb->Image;
- InitializeListHead (&Interface->ArpQues);
- InitializeListHead (&Interface->SentFrames);
- Interface->DupAddrDetect = IpSb->Ip6ConfigInstance.DadXmits.DupAddrDetectTransmits;
- InitializeListHead (&Interface->DupAddrDetectList);
- InitializeListHead (&Interface->DelayJoinList);
- InitializeListHead (&Interface->IpInstances);
- Interface->PromiscRecv = FALSE;
- if (!LinkLocal) {
- return Interface;
- }
- //
- // Get the link local addr
- //
- Ip6Addr = Ip6CreateLinkLocalAddr (IpSb);
- if (Ip6Addr == NULL) {
- goto ON_ERROR;
- }
- //
- // Perform DAD - Duplicate Address Detection.
- //
- Status = Ip6SetAddress (
- Interface,
- Ip6Addr,
- FALSE,
- IP6_LINK_LOCAL_PREFIX_LENGTH,
- (UINT32)IP6_INFINIT_LIFETIME,
- (UINT32)IP6_INFINIT_LIFETIME,
- NULL,
- NULL
- );
- FreePool (Ip6Addr);
- if (EFI_ERROR (Status)) {
- goto ON_ERROR;
- }
- return Interface;
- ON_ERROR:
- FreePool (Interface);
- return NULL;
- }
- /**
- Free the interface used by IpInstance. All the IP instance with
- the same Ip/prefix pair share the same interface. It is reference
- counted. All the frames that haven't been sent will be cancelled.
- Because the IpInstance is optional, the caller must remove
- IpInstance from the interface's instance list.
- @param[in] Interface The interface used by the IpInstance.
- @param[in] IpInstance The IP instance that free the interface. NULL if
- the IP driver is releasing the default interface.
- **/
- VOID
- Ip6CleanInterface (
- IN IP6_INTERFACE *Interface,
- IN IP6_PROTOCOL *IpInstance OPTIONAL
- )
- {
- IP6_DAD_ENTRY *Duplicate;
- IP6_DELAY_JOIN_LIST *Delay;
- NET_CHECK_SIGNATURE (Interface, IP6_INTERFACE_SIGNATURE);
- ASSERT (Interface->RefCnt > 0);
- //
- // Remove all the pending transmit token related to this IP instance.
- //
- Ip6CancelFrames (Interface, EFI_ABORTED, Ip6CancelInstanceFrame, IpInstance);
- if (--Interface->RefCnt > 0) {
- return;
- }
- //
- // Destroy the interface if this is the last IP instance.
- // Remove all the system transmitted packets
- // from this interface, cancel the receive request if exists.
- //
- Ip6CancelFrames (Interface, EFI_ABORTED, Ip6CancelInstanceFrame, NULL);
- ASSERT (IsListEmpty (&Interface->IpInstances));
- ASSERT (IsListEmpty (&Interface->ArpQues));
- ASSERT (IsListEmpty (&Interface->SentFrames));
- while (!IsListEmpty (&Interface->DupAddrDetectList)) {
- Duplicate = NET_LIST_HEAD (&Interface->DupAddrDetectList, IP6_DAD_ENTRY, Link);
- NetListRemoveHead (&Interface->DupAddrDetectList);
- FreePool (Duplicate);
- }
- while (!IsListEmpty (&Interface->DelayJoinList)) {
- Delay = NET_LIST_HEAD (&Interface->DelayJoinList, IP6_DELAY_JOIN_LIST, Link);
- NetListRemoveHead (&Interface->DelayJoinList);
- FreePool (Delay);
- }
- Ip6RemoveAddr (Interface->Service, &Interface->AddressList, &Interface->AddressCount, NULL, 0);
- RemoveEntryList (&Interface->Link);
- FreePool (Interface);
- }
- /**
- Create and wrap a transmit request into a newly allocated IP6_LINK_TX_TOKEN.
- @param[in] Interface The interface to send out from.
- @param[in] IpInstance The IpInstance that transmit the packet. NULL if
- the packet is sent by the IP6 driver itself.
- @param[in] Packet The packet to transmit
- @param[in] CallBack Call back function to execute if transmission
- finished.
- @param[in] Context Opaque parameter to the callback.
- @return The wrapped token if succeed or NULL.
- **/
- IP6_LINK_TX_TOKEN *
- Ip6CreateLinkTxToken (
- IN IP6_INTERFACE *Interface,
- IN IP6_PROTOCOL *IpInstance OPTIONAL,
- IN NET_BUF *Packet,
- IN IP6_FRAME_CALLBACK CallBack,
- IN VOID *Context
- )
- {
- EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;
- EFI_MANAGED_NETWORK_TRANSMIT_DATA *MnpTxData;
- IP6_LINK_TX_TOKEN *Token;
- EFI_STATUS Status;
- UINT32 Count;
- Token = AllocatePool (sizeof (IP6_LINK_TX_TOKEN) + (Packet->BlockOpNum - 1) * sizeof (EFI_MANAGED_NETWORK_FRAGMENT_DATA));
- if (Token == NULL) {
- return NULL;
- }
- Token->Signature = IP6_LINK_TX_SIGNATURE;
- InitializeListHead (&Token->Link);
- Token->IpInstance = IpInstance;
- Token->CallBack = CallBack;
- Token->Packet = Packet;
- Token->Context = Context;
- ZeroMem (&Token->DstMac, sizeof (EFI_MAC_ADDRESS));
- IP6_COPY_LINK_ADDRESS (&Token->SrcMac, &Interface->Service->SnpMode.CurrentAddress);
- MnpToken = &(Token->MnpToken);
- MnpToken->Status = EFI_NOT_READY;
- Status = gBS->CreateEvent (
- EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- Ip6OnFrameSent,
- Token,
- &MnpToken->Event
- );
- if (EFI_ERROR (Status)) {
- FreePool (Token);
- return NULL;
- }
- MnpTxData = &Token->MnpTxData;
- MnpToken->Packet.TxData = MnpTxData;
- MnpTxData->DestinationAddress = &Token->DstMac;
- MnpTxData->SourceAddress = &Token->SrcMac;
- MnpTxData->ProtocolType = IP6_ETHER_PROTO;
- MnpTxData->DataLength = Packet->TotalSize;
- MnpTxData->HeaderLength = 0;
- Count = Packet->BlockOpNum;
- NetbufBuildExt (Packet, (NET_FRAGMENT *)MnpTxData->FragmentTable, &Count);
- MnpTxData->FragmentCount = (UINT16)Count;
- return Token;
- }
- /**
- Free the link layer transmit token. It will close the event,
- then free the memory used.
- @param[in] Token Token to free.
- **/
- VOID
- Ip6FreeLinkTxToken (
- IN IP6_LINK_TX_TOKEN *Token
- )
- {
- NET_CHECK_SIGNATURE (Token, IP6_LINK_TX_SIGNATURE);
- gBS->CloseEvent (Token->MnpToken.Event);
- FreePool (Token);
- }
- /**
- Callback function when the received packet is freed.
- Check Ip6OnFrameReceived for information.
- @param[in] Context Points to EFI_MANAGED_NETWORK_RECEIVE_DATA.
- **/
- VOID
- EFIAPI
- Ip6RecycleFrame (
- IN VOID *Context
- )
- {
- EFI_MANAGED_NETWORK_RECEIVE_DATA *RxData;
- RxData = (EFI_MANAGED_NETWORK_RECEIVE_DATA *)Context;
- gBS->SignalEvent (RxData->RecycleEvent);
- }
- /**
- Received a frame from MNP. Wrap it in net buffer then deliver
- it to IP's input function. The ownship of the packet also
- is transferred to IP. When Ip is finished with this packet, it
- will call NetbufFree to release the packet, NetbufFree will
- again call the Ip6RecycleFrame to signal MNP's event and free
- the token used.
- @param[in] Context Context for the callback.
- **/
- VOID
- EFIAPI
- Ip6OnFrameReceivedDpc (
- IN VOID *Context
- )
- {
- EFI_MANAGED_NETWORK_COMPLETION_TOKEN *MnpToken;
- EFI_MANAGED_NETWORK_RECEIVE_DATA *MnpRxData;
- IP6_LINK_RX_TOKEN *Token;
- NET_FRAGMENT Netfrag;
- NET_BUF *Packet;
- UINT32 Flag;
- IP6_SERVICE *IpSb;
- Token = (IP6_LINK_RX_TOKEN *)Context;
- NET_CHECK_SIGNATURE (Token, IP6_LINK_RX_SIGNATURE);
- //
- // First clear the interface's receive request in case the
- // caller wants to call Ip6ReceiveFrame in the callback.
- //
- IpSb = (IP6_SERVICE *)Token->Context;
- NET_CHECK_SIGNATURE (IpSb, IP6_SERVICE_SIGNATURE);
- MnpToken = &Token->MnpToken;
- MnpRxData = MnpToken->Packet.RxData;
- if (EFI_ERROR (MnpToken->Status) || (MnpRxData == NULL)) {
- Token->CallBack (NULL, MnpToken->Status, 0, Token->Context);
- return;
- }
- //
- // Wrap the frame in a net buffer then deliver it to IP input.
- // IP will reassemble the packet, and deliver it to upper layer
- //
- Netfrag.Len = MnpRxData->DataLength;
- Netfrag.Bulk = MnpRxData->PacketData;
- Packet = NetbufFromExt (&Netfrag, 1, IP6_MAX_HEADLEN, 0, Ip6RecycleFrame, Token->MnpToken.Packet.RxData);
- if (Packet == NULL) {
- gBS->SignalEvent (MnpRxData->RecycleEvent);
- Token->CallBack (NULL, EFI_OUT_OF_RESOURCES, 0, Token->Context);
- return;
- }
- Flag = (MnpRxData->BroadcastFlag ? IP6_LINK_BROADCAST : 0);
- Flag |= (MnpRxData->MulticastFlag ? IP6_LINK_MULTICAST : 0);
- Flag |= (MnpRxData->PromiscuousFlag ? IP6_LINK_PROMISC : 0);
- Token->CallBack (Packet, EFI_SUCCESS, Flag, Token->Context);
- }
- /**
- Request Ip6OnFrameReceivedDpc as a DPC at TPL_CALLBACK.
- @param Event The receive event delivered to MNP for receive.
- @param Context Context for the callback.
- **/
- VOID
- EFIAPI
- Ip6OnFrameReceived (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
- {
- //
- // Request Ip6OnFrameReceivedDpc as a DPC at TPL_CALLBACK
- //
- QueueDpc (TPL_CALLBACK, Ip6OnFrameReceivedDpc, Context);
- }
- /**
- Request to receive the packet from the interface.
- @param[in] CallBack Function to call when receive finished.
- @param[in] IpSb Points to IP6 service binding instance.
- @retval EFI_ALREADY_STARTED There is already a pending receive request.
- @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to receive.
- @retval EFI_SUCCESS The receive request has been started.
- **/
- EFI_STATUS
- Ip6ReceiveFrame (
- IN IP6_FRAME_CALLBACK CallBack,
- IN IP6_SERVICE *IpSb
- )
- {
- EFI_STATUS Status;
- IP6_LINK_RX_TOKEN *Token;
- NET_CHECK_SIGNATURE (IpSb, IP6_SERVICE_SIGNATURE);
- Token = &IpSb->RecvRequest;
- Token->CallBack = CallBack;
- Token->Context = (VOID *)IpSb;
- Status = IpSb->Mnp->Receive (IpSb->Mnp, &Token->MnpToken);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- return EFI_SUCCESS;
- }
- /**
- Callback function when frame transmission is finished. It will
- call the frame owner's callback function to tell it the result.
- @param[in] Context Context which points to the token.
- **/
- VOID
- EFIAPI
- Ip6OnFrameSentDpc (
- IN VOID *Context
- )
- {
- IP6_LINK_TX_TOKEN *Token;
- Token = (IP6_LINK_TX_TOKEN *)Context;
- NET_CHECK_SIGNATURE (Token, IP6_LINK_TX_SIGNATURE);
- RemoveEntryList (&Token->Link);
- Token->CallBack (
- Token->Packet,
- Token->MnpToken.Status,
- 0,
- Token->Context
- );
- Ip6FreeLinkTxToken (Token);
- }
- /**
- Request Ip6OnFrameSentDpc as a DPC at TPL_CALLBACK.
- @param[in] Event The transmit token's event.
- @param[in] Context Context which points to the token.
- **/
- VOID
- EFIAPI
- Ip6OnFrameSent (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
- {
- //
- // Request Ip6OnFrameSentDpc as a DPC at TPL_CALLBACK
- //
- QueueDpc (TPL_CALLBACK, Ip6OnFrameSentDpc, Context);
- }
- /**
- Send a frame from the interface. If the next hop is a multicast address,
- it is transmitted immediately. If the next hop is a unicast,
- and the NextHop's MAC is not known, it will perform address resolution.
- If an error occurred, the CallBack won't be called. So, the caller
- must test the return value, and take action when there is an error.
- @param[in] Interface The interface to send the frame from
- @param[in] IpInstance The IP child that request the transmission.
- NULL if it is the IP6 driver itself.
- @param[in] Packet The packet to transmit.
- @param[in] NextHop The immediate destination to transmit the packet to.
- @param[in] CallBack Function to call back when transmit finished.
- @param[in] Context Opaque parameter to the callback.
- @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to send the frame.
- @retval EFI_NO_MAPPING Can't resolve the MAC for the nexthop.
- @retval EFI_SUCCESS The packet successfully transmitted.
- **/
- EFI_STATUS
- Ip6SendFrame (
- IN IP6_INTERFACE *Interface,
- IN IP6_PROTOCOL *IpInstance OPTIONAL,
- IN NET_BUF *Packet,
- IN EFI_IPv6_ADDRESS *NextHop,
- IN IP6_FRAME_CALLBACK CallBack,
- IN VOID *Context
- )
- {
- IP6_SERVICE *IpSb;
- IP6_LINK_TX_TOKEN *Token;
- EFI_STATUS Status;
- IP6_NEIGHBOR_ENTRY *NeighborCache;
- LIST_ENTRY *Entry;
- IP6_NEIGHBOR_ENTRY *ArpQue;
- IpSb = Interface->Service;
- NET_CHECK_SIGNATURE (IpSb, IP6_SERVICE_SIGNATURE);
- //
- // Only when link local address is performing DAD, the interface could be used in unconfigured.
- //
- if (IpSb->LinkLocalOk) {
- ASSERT (Interface->Configured);
- }
- Token = Ip6CreateLinkTxToken (Interface, IpInstance, Packet, CallBack, Context);
- if (Token == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- if (IP6_IS_MULTICAST (NextHop)) {
- Status = Ip6GetMulticastMac (IpSb->Mnp, NextHop, &Token->DstMac);
- if (EFI_ERROR (Status)) {
- goto Error;
- }
- goto SendNow;
- }
- //
- // If send to itself, directly send out
- //
- if (EFI_IP6_EQUAL (&Packet->Ip.Ip6->DestinationAddress, &Packet->Ip.Ip6->SourceAddress)) {
- IP6_COPY_LINK_ADDRESS (&Token->DstMac, &IpSb->SnpMode.CurrentAddress);
- goto SendNow;
- }
- //
- // If unicast, check the neighbor state.
- //
- NeighborCache = Ip6FindNeighborEntry (IpSb, NextHop);
- ASSERT (NeighborCache != NULL);
- if (NeighborCache->Interface == NULL) {
- NeighborCache->Interface = Interface;
- }
- switch (NeighborCache->State) {
- case EfiNeighborStale:
- NeighborCache->State = EfiNeighborDelay;
- NeighborCache->Ticks = (UINT32)IP6_GET_TICKS (IP6_DELAY_FIRST_PROBE_TIME);
- //
- // Fall through
- //
- case EfiNeighborReachable:
- case EfiNeighborDelay:
- case EfiNeighborProbe:
- IP6_COPY_LINK_ADDRESS (&Token->DstMac, &NeighborCache->LinkAddress);
- goto SendNow;
- break;
- default:
- break;
- }
- //
- // Have to do asynchronous ARP resolution. First check whether there is
- // already a pending request.
- //
- NET_LIST_FOR_EACH (Entry, &Interface->ArpQues) {
- ArpQue = NET_LIST_USER_STRUCT (Entry, IP6_NEIGHBOR_ENTRY, ArpList);
- if (ArpQue == NeighborCache) {
- InsertTailList (&NeighborCache->Frames, &Token->Link);
- NeighborCache->ArpFree = TRUE;
- return EFI_SUCCESS;
- }
- }
- //
- // First frame requires ARP.
- //
- InsertTailList (&NeighborCache->Frames, &Token->Link);
- InsertTailList (&Interface->ArpQues, &NeighborCache->ArpList);
- NeighborCache->ArpFree = TRUE;
- return EFI_SUCCESS;
- SendNow:
- //
- // Insert the tx token into the SentFrames list before calling Mnp->Transmit.
- // Remove it if the returned status is not EFI_SUCCESS.
- //
- InsertTailList (&Interface->SentFrames, &Token->Link);
- Status = IpSb->Mnp->Transmit (IpSb->Mnp, &Token->MnpToken);
- if (EFI_ERROR (Status)) {
- RemoveEntryList (&Token->Link);
- goto Error;
- }
- return EFI_SUCCESS;
- Error:
- Ip6FreeLinkTxToken (Token);
- return Status;
- }
- /**
- The heartbeat timer of IP6 service instance. It times out
- all of its IP6 children's received-but-not-delivered and
- transmitted-but-not-recycle packets.
- @param[in] Event The IP6 service instance's heartbeat timer.
- @param[in] Context The IP6 service instance.
- **/
- VOID
- EFIAPI
- Ip6TimerTicking (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
- {
- IP6_SERVICE *IpSb;
- IpSb = (IP6_SERVICE *)Context;
- NET_CHECK_SIGNATURE (IpSb, IP6_SERVICE_SIGNATURE);
- Ip6PacketTimerTicking (IpSb);
- Ip6NdTimerTicking (IpSb);
- Ip6MldTimerTicking (IpSb);
- }
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