/** @file
IpIo Library.
Copyright (c) 2005 - 2007, Intel Corporation.<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Protocol/Udp4.h>
#include <Library/IpIoLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
LIST_ENTRY mActiveIpIoList = {
&mActiveIpIoList,
&mActiveIpIoList
};
EFI_IP4_CONFIG_DATA mIpIoDefaultIpConfigData = {
EFI_IP_PROTO_UDP,
FALSE,
TRUE,
FALSE,
FALSE,
FALSE,
{{0, 0, 0, 0}},
{{0, 0, 0, 0}},
0,
255,
FALSE,
FALSE,
0,
0
};
ICMP_ERROR_INFO mIcmpErrMap[10] = {
{FALSE, TRUE},
{FALSE, TRUE},
{TRUE, TRUE},
{TRUE, TRUE},
{TRUE, TRUE},
{FALSE, TRUE},
{FALSE, TRUE},
{FALSE, TRUE},
{FALSE, FALSE},
{FALSE, TRUE}
};
/**
Notify function for IP transmit token.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoTransmitHandlerDpc (
IN VOID *Context
);
/**
Notify function for IP transmit token.
@param[in] Event The event signaled.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoTransmitHandler (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
This function create an IP child ,open the IP protocol, and return the opened
IP protocol as Interface.
@param[in] ControllerHandle The controller handle.
@param[in] ImageHandle The image handle.
@param[in] ChildHandle Pointer to the buffer to save the IP child handle.
@param[out] Interface Pointer used to get the IP protocol interface.
@retval EFI_SUCCESS The IP child is created and the IP protocol
interface is retrieved.
@retval Others The required operation failed.
**/
EFI_STATUS
IpIoCreateIpChildOpenProtocol (
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ImageHandle,
IN EFI_HANDLE *ChildHandle,
OUT VOID **Interface
)
{
EFI_STATUS Status;
//
// Create an IP child.
//
Status = NetLibCreateServiceChild (
ControllerHandle,
ImageHandle,
&gEfiIp4ServiceBindingProtocolGuid,
ChildHandle
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Open the IP protocol installed on the *ChildHandle.
//
Status = gBS->OpenProtocol (
*ChildHandle,
&gEfiIp4ProtocolGuid,
Interface,
ImageHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
//
// On failure, destroy the IP child.
//
NetLibDestroyServiceChild (
ControllerHandle,
ImageHandle,
&gEfiIp4ServiceBindingProtocolGuid,
*ChildHandle
);
}
return Status;
}
/**
This function close the previously openned IP protocol and destroy the IP child.
@param[in] ControllerHandle The controller handle.
@param[in] ImageHandle The image handle.
@param[in] ChildHandle The child handle of the IP child.
@retval EFI_SUCCESS The IP protocol is closed and the relevant IP child
is destroyed.
@retval Others The required operation failed.
**/
EFI_STATUS
IpIoCloseProtocolDestroyIpChild (
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ImageHandle,
IN EFI_HANDLE ChildHandle
)
{
EFI_STATUS Status;
//
// Close the previously openned IP protocol.
//
gBS->CloseProtocol (
ChildHandle,
&gEfiIp4ProtocolGuid,
ImageHandle,
ControllerHandle
);
//
// Destroy the IP child.
//
Status = NetLibDestroyServiceChild (
ControllerHandle,
ImageHandle,
&gEfiIp4ServiceBindingProtocolGuid,
ChildHandle
);
return Status;
}
/**
This function handles ICMP packets.
@param[in] IpIo Pointer to the IP_IO instance.
@param[in, out] Pkt Pointer to the ICMP packet.
@param[in] Session Pointer to the net session of this ICMP packet.
@retval EFI_SUCCESS The ICMP packet is handled successfully.
@retval EFI_ABORTED This type of ICMP packet is not supported.
**/
EFI_STATUS
IpIoIcmpHandler (
IN IP_IO *IpIo,
IN OUT NET_BUF *Pkt,
IN EFI_NET_SESSION_DATA *Session
)
{
IP4_ICMP_ERROR_HEAD *IcmpHdr;
EFI_IP4_HEADER *IpHdr;
ICMP_ERROR IcmpErr;
UINT8 *PayLoadHdr;
UINT8 Type;
UINT8 Code;
UINT32 TrimBytes;
IcmpHdr = NET_PROTO_HDR (Pkt, IP4_ICMP_ERROR_HEAD);
IpHdr = (EFI_IP4_HEADER *) (&IcmpHdr->IpHead);
//
// Check the ICMP packet length.
//
if (Pkt->TotalSize < ICMP_ERRLEN (IpHdr)) {
return EFI_ABORTED;
}
Type = IcmpHdr->Head.Type;
Code = IcmpHdr->Head.Code;
//
// Analyze the ICMP Error in this ICMP pkt
//
switch (Type) {
case ICMP_TYPE_UNREACH:
switch (Code) {
case ICMP_CODE_UNREACH_NET:
case ICMP_CODE_UNREACH_HOST:
case ICMP_CODE_UNREACH_PROTOCOL:
case ICMP_CODE_UNREACH_PORT:
case ICMP_CODE_UNREACH_SRCFAIL:
IcmpErr = (ICMP_ERROR) (ICMP_ERR_UNREACH_NET + Code);
break;
case ICMP_CODE_UNREACH_NEEDFRAG:
IcmpErr = ICMP_ERR_MSGSIZE;
break;
case ICMP_CODE_UNREACH_NET_UNKNOWN:
case ICMP_CODE_UNREACH_NET_PROHIB:
case ICMP_CODE_UNREACH_TOSNET:
IcmpErr = ICMP_ERR_UNREACH_NET;
break;
case ICMP_CODE_UNREACH_HOST_UNKNOWN:
case ICMP_CODE_UNREACH_ISOLATED:
case ICMP_CODE_UNREACH_HOST_PROHIB:
case ICMP_CODE_UNREACH_TOSHOST:
IcmpErr = ICMP_ERR_UNREACH_HOST;
break;
default:
return EFI_ABORTED;
}
break;
case ICMP_TYPE_TIMXCEED:
if (Code > 1) {
return EFI_ABORTED;
}
IcmpErr = (ICMP_ERROR) (Code + ICMP_ERR_TIMXCEED_INTRANS);
break;
case ICMP_TYPE_PARAMPROB:
if (Code > 1) {
return EFI_ABORTED;
}
IcmpErr = ICMP_ERR_PARAMPROB;
break;
case ICMP_TYPE_SOURCEQUENCH:
if (Code != 0) {
return EFI_ABORTED;
}
IcmpErr = ICMP_ERR_QUENCH;
break;
default:
return EFI_ABORTED;
}
//
// Notify user the ICMP pkt only containing payload except
// IP and ICMP header
//
PayLoadHdr = (UINT8 *) ((UINT8 *) IpHdr + EFI_IP4_HEADER_LEN (IpHdr));
TrimBytes = (UINT32) (PayLoadHdr - (UINT8 *) IcmpHdr);
NetbufTrim (Pkt, TrimBytes, TRUE);
IpIo->PktRcvdNotify (EFI_ICMP_ERROR, IcmpErr, Session, Pkt, IpIo->RcvdContext);
return EFI_SUCCESS;
}
/**
Free function for receive token of IP_IO. It is used to
signal the recycle event to notify IP to recycle the
data buffer.
@param[in] Event The event to be signaled.
**/
VOID
IpIoExtFree (
IN VOID *Event
)
{
gBS->SignalEvent ((EFI_EVENT) Event);
}
/**
Create a send entry to wrap a packet before sending
out it through IP.
@param[in, out] IpIo Pointer to the IP_IO instance.
@param[in, out] Pkt Pointer to the packet.
@param[in] Sender Pointer to the IP sender.
@param[in] Context Pointer to the context.
@param[in] NotifyData Pointer to the notify data.
@param[in] Dest Pointer to the destination IP address.
@param[in] Override Pointer to the overriden IP_IO data.
@return Pointer to the data structure created to wrap the packet. If NULL,
@return resource limit occurred.
**/
IP_IO_SEND_ENTRY *
IpIoCreateSndEntry (
IN OUT IP_IO *IpIo,
IN OUT NET_BUF *Pkt,
IN EFI_IP4_PROTOCOL *Sender,
IN VOID *Context OPTIONAL,
IN VOID *NotifyData OPTIONAL,
IN IP4_ADDR Dest,
IN IP_IO_OVERRIDE *Override
)
{
IP_IO_SEND_ENTRY *SndEntry;
EFI_IP4_COMPLETION_TOKEN *SndToken;
EFI_IP4_TRANSMIT_DATA *TxData;
EFI_STATUS Status;
EFI_IP4_OVERRIDE_DATA *OverrideData;
volatile UINT32 Index;
//
// Allocate resource for SndEntry
//
SndEntry = AllocatePool (sizeof (IP_IO_SEND_ENTRY));
if (NULL == SndEntry) {
return NULL;
}
//
// Allocate resource for SndToken
//
SndToken = AllocatePool (sizeof (EFI_IP4_COMPLETION_TOKEN));
if (NULL == SndToken) {
goto ReleaseSndEntry;
}
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
IpIoTransmitHandler,
SndEntry,
&(SndToken->Event)
);
if (EFI_ERROR (Status)) {
goto ReleaseSndToken;
}
//
// Allocate resource for TxData
//
TxData = AllocatePool (
sizeof (EFI_IP4_TRANSMIT_DATA) +
sizeof (EFI_IP4_FRAGMENT_DATA) * (Pkt->BlockOpNum - 1)
);
if (NULL == TxData) {
goto ReleaseEvent;
}
//
// Allocate resource for OverrideData if needed
//
OverrideData = NULL;
if (NULL != Override) {
OverrideData = AllocatePool (sizeof (EFI_IP4_OVERRIDE_DATA));
if (NULL == OverrideData) {
goto ReleaseResource;
}
//
// Set the fields of OverrideData
//
CopyMem (OverrideData, Override, sizeof (*OverrideData));
}
//
// Set the fields of TxData
//
CopyMem (&TxData->DestinationAddress, &Dest, sizeof (EFI_IPv4_ADDRESS));
TxData->OverrideData = OverrideData;
TxData->OptionsLength = 0;
TxData->OptionsBuffer = NULL;
TxData->TotalDataLength = Pkt->TotalSize;
TxData->FragmentCount = Pkt->BlockOpNum;
for (Index = 0; Index < Pkt->BlockOpNum; Index++) {
TxData->FragmentTable[Index].FragmentBuffer = Pkt->BlockOp[Index].Head;
TxData->FragmentTable[Index].FragmentLength = Pkt->BlockOp[Index].Size;
}
//
// Set the fields of SndToken
//
SndToken->Packet.TxData = TxData;
//
// Set the fields of SndEntry
//
SndEntry->IpIo = IpIo;
SndEntry->Ip = Sender;
SndEntry->Context = Context;
SndEntry->NotifyData = NotifyData;
SndEntry->Pkt = Pkt;
NET_GET_REF (Pkt);
SndEntry->SndToken = SndToken;
InsertTailList (&IpIo->PendingSndList, &SndEntry->Entry);
return SndEntry;
ReleaseResource:
gBS->FreePool (TxData);
ReleaseEvent:
gBS->CloseEvent (SndToken->Event);
ReleaseSndToken:
gBS->FreePool (SndToken);
ReleaseSndEntry:
gBS->FreePool (SndEntry);
return NULL;
}
/**
Destroy the SndEntry.
This function pairs with IpIoCreateSndEntry().
@param[in] SndEntry Pointer to the send entry to be destroyed.
**/
VOID
IpIoDestroySndEntry (
IN IP_IO_SEND_ENTRY *SndEntry
)
{
EFI_IP4_TRANSMIT_DATA *TxData;
TxData = SndEntry->SndToken->Packet.TxData;
if (NULL != TxData->OverrideData) {
gBS->FreePool (TxData->OverrideData);
}
gBS->FreePool (TxData);
NetbufFree (SndEntry->Pkt);
gBS->CloseEvent (SndEntry->SndToken->Event);
gBS->FreePool (SndEntry->SndToken);
RemoveEntryList (&SndEntry->Entry);
gBS->FreePool (SndEntry);
}
/**
Notify function for IP transmit token.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoTransmitHandlerDpc (
IN VOID *Context
)
{
IP_IO *IpIo;
IP_IO_SEND_ENTRY *SndEntry;
SndEntry = (IP_IO_SEND_ENTRY *) Context;
IpIo = SndEntry->IpIo;
if ((IpIo->PktSentNotify != NULL) && (SndEntry->NotifyData != NULL)) {
IpIo->PktSentNotify (
SndEntry->SndToken->Status,
SndEntry->Context,
SndEntry->Ip,
SndEntry->NotifyData
);
}
IpIoDestroySndEntry (SndEntry);
}
/**
Notify function for IP transmit token.
@param[in] Event The event signaled.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoTransmitHandler (
IN EFI_EVENT Event,
IN VOID *Context
)
{
//
// Request IpIoTransmitHandlerDpc as a DPC at TPL_CALLBACK
//
NetLibQueueDpc (TPL_CALLBACK, IpIoTransmitHandlerDpc, Context);
}
/**
The dummy handler for the dummy IP receive token.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoDummyHandlerDpc (
IN VOID *Context
)
{
IP_IO_IP_INFO *IpInfo;
EFI_IP4_COMPLETION_TOKEN *DummyToken;
IpInfo = (IP_IO_IP_INFO *) Context;
DummyToken = &(IpInfo->DummyRcvToken);
if (EFI_ABORTED == DummyToken->Status) {
//
// The reception is actively aborted by the consumer, directly return.
//
return;
} else if (EFI_SUCCESS == DummyToken->Status) {
ASSERT ((DummyToken->Packet.RxData)!= NULL);
gBS->SignalEvent (DummyToken->Packet.RxData->RecycleSignal);
}
IpInfo->Ip->Receive (IpInfo->Ip, DummyToken);
}
/**
This function add IpIoDummyHandlerDpc to the end of the DPC queue.
@param[in] Event The event signaled.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoDummyHandler (
IN EFI_EVENT Event,
IN VOID *Context
)
{
//
// Request IpIoDummyHandlerDpc as a DPC at TPL_CALLBACK
//
NetLibQueueDpc (TPL_CALLBACK, IpIoDummyHandlerDpc, Context);
}
/**
Notify function for the IP receive token, used to process
the received IP packets.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoListenHandlerDpc (
IN VOID *Context
)
{
IP_IO *IpIo;
EFI_STATUS Status;
EFI_IP4_RECEIVE_DATA *RxData;
EFI_IP4_PROTOCOL *Ip;
EFI_NET_SESSION_DATA Session;
NET_BUF *Pkt;
IpIo = (IP_IO *) Context;
Ip = IpIo->Ip;
Status = IpIo->RcvToken.Status;
RxData = IpIo->RcvToken.Packet.RxData;
if (EFI_ABORTED == Status) {
//
// The reception is actively aborted by the consumer, directly return.
//
return;
}
if (((EFI_SUCCESS != Status) && (EFI_ICMP_ERROR != Status)) || (NULL == RxData)) {
//
// @bug Only process the normal packets and the icmp error packets, if RxData is NULL
// @bug with Status == EFI_SUCCESS or EFI_ICMP_ERROR, just resume the receive although
// @bug this should be a bug of the low layer (IP).
//
goto Resume;
}
if (NULL == IpIo->PktRcvdNotify) {
goto CleanUp;
}
if ((EFI_IP4 (RxData->Header->SourceAddress) != 0) &&
!Ip4IsUnicast (EFI_NTOHL (RxData->Header->SourceAddress), 0)) {
//
// The source address is not zero and it's not a unicast IP address, discard it.
//
goto CleanUp;
}
//
// Create a netbuffer representing packet
//
Pkt = NetbufFromExt (
(NET_FRAGMENT *) RxData->FragmentTable,
RxData->FragmentCount,
0,
0,
IpIoExtFree,
RxData->RecycleSignal
);
if (NULL == Pkt) {
goto CleanUp;
}
//
// Create a net session
//
Session.Source = EFI_IP4 (RxData->Header->SourceAddress);
Session.Dest = EFI_IP4 (RxData->Header->DestinationAddress);
Session.IpHdr = RxData->Header;
if (EFI_SUCCESS == Status) {
IpIo->PktRcvdNotify (EFI_SUCCESS, (ICMP_ERROR) 0, &Session, Pkt, IpIo->RcvdContext);
} else {
//
// Status is EFI_ICMP_ERROR
//
Status = IpIoIcmpHandler (IpIo, Pkt, &Session);
if (EFI_ERROR (Status)) {
NetbufFree (Pkt);
}
}
goto Resume;
CleanUp:
gBS->SignalEvent (RxData->RecycleSignal);
Resume:
Ip->Receive (Ip, &(IpIo->RcvToken));
}
/**
This function add IpIoListenHandlerDpc to the end of the DPC queue.
@param[in] Event The event signaled.
@param[in] Context The context passed in by the event notifier.
**/
VOID
EFIAPI
IpIoListenHandler (
IN EFI_EVENT Event,
IN VOID *Context
)
{
//
// Request IpIoListenHandlerDpc as a DPC at TPL_CALLBACK
//
NetLibQueueDpc (TPL_CALLBACK, IpIoListenHandlerDpc, Context);
}
/**
Create a new IP_IO instance.
This function uses IP4 service binding protocol in Controller to create an IP4
child (aka IP4 instance).
@param[in] Image The image handle of the driver or application that
consumes IP_IO.
@param[in] Controller The controller handle that has IP4 service binding
protocol installed.
@return Pointer to a newly created IP_IO instance, or NULL if failed.
**/
IP_IO *
EFIAPI
IpIoCreate (
IN EFI_HANDLE Image,
IN EFI_HANDLE Controller
)
{
EFI_STATUS Status;
IP_IO *IpIo;
IpIo = AllocateZeroPool (sizeof (IP_IO));
if (NULL == IpIo) {
return NULL;
}
InitializeListHead (&(IpIo->PendingSndList));
InitializeListHead (&(IpIo->IpList));
IpIo->Controller = Controller;
IpIo->Image = Image;
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
IpIoListenHandler,
IpIo,
&(IpIo->RcvToken.Event)
);
if (EFI_ERROR (Status)) {
goto ReleaseIpIo;
}
//
// Create an IP child and open IP protocol
//
Status = IpIoCreateIpChildOpenProtocol (
Controller,
Image,
&IpIo->ChildHandle,
(VOID **)&(IpIo->Ip)
);
if (EFI_ERROR (Status)) {
goto ReleaseIpIo;
}
return IpIo;
ReleaseIpIo:
if (NULL != IpIo->RcvToken.Event) {
gBS->CloseEvent (IpIo->RcvToken.Event);
}
gBS->FreePool (IpIo);
return NULL;
}
/**
Open an IP_IO instance for use.
This function is called after IpIoCreate(). It is used for configuring the IP
instance and register the callbacks and their context data for sending and
receiving IP packets.
@param[in, out] IpIo Pointer to an IP_IO instance that needs
to open.
@param[in] OpenData The configuration data and callbacks for
the IP_IO instance.
@retval EFI_SUCCESS The IP_IO instance opened with OpenData
successfully.
@retval EFI_ACCESS_DENIED The IP_IO instance is configured, avoid to
reopen it.
@retval Others Error condition occurred.
**/
EFI_STATUS
EFIAPI
IpIoOpen (
IN OUT IP_IO *IpIo,
IN IP_IO_OPEN_DATA *OpenData
)
{
EFI_STATUS Status;
EFI_IP4_PROTOCOL *Ip;
if (IpIo->IsConfigured) {
return EFI_ACCESS_DENIED;
}
Ip = IpIo->Ip;
//
// configure ip
//
Status = Ip->Configure (Ip, &OpenData->IpConfigData);
if (EFI_ERROR (Status)) {
return Status;
}
//
// @bug To delete the default route entry in this Ip, if it is:
// @bug (0.0.0.0, 0.0.0.0, 0.0.0.0). Delete this statement if Ip modified
// @bug its code
//
Status = Ip->Routes (Ip, TRUE, &mZeroIp4Addr, &mZeroIp4Addr, &mZeroIp4Addr);
if (EFI_ERROR (Status) && (EFI_NOT_FOUND != Status)) {
return Status;
}
IpIo->PktRcvdNotify = OpenData->PktRcvdNotify;
IpIo->PktSentNotify = OpenData->PktSentNotify;
IpIo->RcvdContext = OpenData->RcvdContext;
IpIo->SndContext = OpenData->SndContext;
IpIo->Protocol = OpenData->IpConfigData.DefaultProtocol;
//
// start to listen incoming packet
//
Status = Ip->Receive (Ip, &(IpIo->RcvToken));
if (EFI_ERROR (Status)) {
Ip->Configure (Ip, NULL);
goto ErrorExit;
}
IpIo->IsConfigured = TRUE;
InsertTailList (&mActiveIpIoList, &IpIo->Entry);
ErrorExit:
return Status;
}
/**
Stop an IP_IO instance.
This function is paired with IpIoOpen(). The IP_IO will be unconfigured and all
the pending send/receive tokens will be canceled.
@param[in, out] IpIo Pointer to the IP_IO instance that needs to stop.
@retval EFI_SUCCESS The IP_IO instance stopped successfully.
@retval Others Error condition occurred.
**/
EFI_STATUS
EFIAPI
IpIoStop (
IN OUT IP_IO *IpIo
)
{
EFI_STATUS Status;
EFI_IP4_PROTOCOL *Ip;
IP_IO_IP_INFO *IpInfo;
if (!IpIo->IsConfigured) {
return EFI_SUCCESS;
}
//
// Remove the IpIo from the active IpIo list.
//
RemoveEntryList (&IpIo->Entry);
Ip = IpIo->Ip;
//
// Configure NULL Ip
//
Status = Ip->Configure (Ip, NULL);
if (EFI_ERROR (Status)) {
return Status;
}
IpIo->IsConfigured = FALSE;
//
// Detroy the Ip List used by IpIo
//
while (!IsListEmpty (&(IpIo->IpList))) {
IpInfo = NET_LIST_HEAD (&(IpIo->IpList), IP_IO_IP_INFO, Entry);
IpIoRemoveIp (IpIo, IpInfo);
}
//
// All pending send tokens should be flushed by reseting the IP instances.
//
ASSERT (IsListEmpty (&IpIo->PendingSndList));
//
// Close the receive event.
//
gBS->CloseEvent (IpIo->RcvToken.Event);
return EFI_SUCCESS;
}
/**
Destroy an IP_IO instance.
This function is paired with IpIoCreate(). The IP_IO will be closed first.
Resource will be freed afterwards. See IpIoCloseProtocolDestroyIpChild().
@param[in, out] IpIo Pointer to the IP_IO instance that needs to be
destroyed.
@retval EFI_SUCCESS The IP_IO instance destroyed successfully.
@retval Others Error condition occurred.
**/
EFI_STATUS
EFIAPI
IpIoDestroy (
IN OUT IP_IO *IpIo
)
{
//
// Stop the IpIo.
//
IpIoStop (IpIo);
//
// Close the IP protocol and destroy the child.
//
IpIoCloseProtocolDestroyIpChild (IpIo->Controller, IpIo->Image, IpIo->ChildHandle);
gBS->FreePool (IpIo);
return EFI_SUCCESS;
}
/**
Send out an IP packet.
This function is called after IpIoOpen(). The data to be sent are wrapped in
Pkt. The IP instance wrapped in IpIo is used for sending by default but can be
overriden by Sender. Other sending configs, like source address and gateway
address etc., are specified in OverrideData.
@param[in, out] IpIo Pointer to an IP_IO instance used for sending IP
packet.
@param[in, out] Pkt Pointer to the IP packet to be sent.
@param[in] Sender The IP protocol instance used for sending.
@param[in] Context Optional context data.
@param[in] NotifyData Optional notify data.
@param[in] Dest The destination IP address to send this packet to.
@param[in] OverrideData The data to override some configuration of the IP
instance used for sending.
@retval EFI_SUCCESS The operation is completed successfully.
@retval EFI_NOT_STARTED The IpIo is not configured.
@retval EFI_OUT_OF_RESOURCES Failed due to resource limit.
**/
EFI_STATUS
EFIAPI
IpIoSend (
IN OUT IP_IO *IpIo,
IN OUT NET_BUF *Pkt,
IN IP_IO_IP_INFO *Sender OPTIONAL,
IN VOID *Context OPTIONAL,
IN VOID *NotifyData OPTIONAL,
IN IP4_ADDR Dest,
IN IP_IO_OVERRIDE *OverrideData OPTIONAL
)
{
EFI_STATUS Status;
EFI_IP4_PROTOCOL *Ip;
IP_IO_SEND_ENTRY *SndEntry;
if (!IpIo->IsConfigured) {
return EFI_NOT_STARTED;
}
Ip = (NULL == Sender) ? IpIo->Ip : Sender->Ip;
//
// create a new SndEntry
//
SndEntry = IpIoCreateSndEntry (IpIo, Pkt, Ip, Context, NotifyData, Dest, OverrideData);
if (NULL == SndEntry) {
return EFI_OUT_OF_RESOURCES;
}
//
// Send this Packet
//
Status = Ip->Transmit (Ip, SndEntry->SndToken);
if (EFI_ERROR (Status)) {
IpIoDestroySndEntry (SndEntry);
}
return Status;
}
/**
Cancel the IP transmit token which wraps this Packet.
@param[in] IpIo Pointer to the IP_IO instance.
@param[in] Packet Pointer to the packet of NET_BUF to cancel.
**/
VOID
EFIAPI
IpIoCancelTxToken (
IN IP_IO *IpIo,
IN VOID *Packet
)
{
LIST_ENTRY *Node;
IP_IO_SEND_ENTRY *SndEntry;
EFI_IP4_PROTOCOL *Ip;
ASSERT ((IpIo)!= NULL && (Packet)!= NULL);
NET_LIST_FOR_EACH (Node, &IpIo->PendingSndList) {
SndEntry = NET_LIST_USER_STRUCT (Node, IP_IO_SEND_ENTRY, Entry);
if (SndEntry->Pkt == Packet) {
Ip = SndEntry->Ip;
Ip->Cancel (Ip, SndEntry->SndToken);
break;
}
}
}
/**
Add a new IP instance for sending data.
The function is used to add the IP_IO to the IP_IO sending list. The caller
can later use IpIoFindSender() to get the IP_IO and call IpIoSend() to send
data.
@param[in, out] IpIo Pointer to a IP_IO instance to add a new IP
instance for sending purpose.
@return Pointer to the created IP_IO_IP_INFO structure, NULL if failed.
**/
IP_IO_IP_INFO *
EFIAPI
IpIoAddIp (
IN OUT IP_IO *IpIo
)
{
EFI_STATUS Status;
IP_IO_IP_INFO *IpInfo;
ASSERT (IpIo != NULL);
IpInfo = AllocatePool (sizeof (IP_IO_IP_INFO));
if (IpInfo == NULL) {
return IpInfo;
}
//
// Init this IpInfo, set the Addr and SubnetMask to 0 before we configure the IP
// instance.
//
InitializeListHead (&IpInfo->Entry);
IpInfo->ChildHandle = NULL;
IpInfo->Addr = 0;
IpInfo->SubnetMask = 0;
IpInfo->RefCnt = 1;
//
// Create the IP instance and open the Ip4 protocol.
//
Status = IpIoCreateIpChildOpenProtocol (
IpIo->Controller,
IpIo->Image,
&IpInfo->ChildHandle,
(VOID **) &IpInfo->Ip
);
if (EFI_ERROR (Status)) {
goto ReleaseIpInfo;
}
//
// Create the event for the DummyRcvToken.
//
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
IpIoDummyHandler,
IpInfo,
&IpInfo->DummyRcvToken.Event
);
if (EFI_ERROR (Status)) {
goto ReleaseIpChild;
}
//
// Link this IpInfo into the IpIo.
//
InsertTailList (&IpIo->IpList, &IpInfo->Entry);
return IpInfo;
ReleaseIpChild:
IpIoCloseProtocolDestroyIpChild (
IpIo->Controller,
IpIo->Image,
IpInfo->ChildHandle
);
ReleaseIpInfo:
gBS->FreePool (IpInfo);
return NULL;
}
/**
Configure the IP instance of this IpInfo and start the receiving if Ip4ConfigData
is not NULL.
@param[in, out] IpInfo Pointer to the IP_IO_IP_INFO instance.
@param[in, out] Ip4ConfigData The IP4 configure data used to configure the IP
instance, if NULL the IP instance is reset. If
UseDefaultAddress is set to TRUE, and the configure
operation succeeds, the default address information
is written back in this Ip4ConfigData.
@retval EFI_SUCCESS The IP instance of this IpInfo is configured successfully
or no need to reconfigure it.
@retval Others Configuration fails.
**/
EFI_STATUS
EFIAPI
IpIoConfigIp (
IN OUT IP_IO_IP_INFO *IpInfo,
IN OUT EFI_IP4_CONFIG_DATA *Ip4ConfigData OPTIONAL
)
{
EFI_STATUS Status;
EFI_IP4_PROTOCOL *Ip;
EFI_IP4_MODE_DATA Ip4ModeData;
ASSERT (IpInfo != NULL);
if (IpInfo->RefCnt > 1) {
//
// This IP instance is shared, don't reconfigure it until it has only one
// consumer. Currently, only the tcp children cloned from their passive parent
// will share the same IP. So this cases only happens while Ip4ConfigData is NULL,
// let the last consumer clean the IP instance.
//
return EFI_SUCCESS;
}
Ip = IpInfo->Ip;
Status = Ip->Configure (Ip, Ip4ConfigData);
if (EFI_ERROR (Status)) {
goto OnExit;
}
if (Ip4ConfigData != NULL) {
if (Ip4ConfigData->UseDefaultAddress) {
Ip->GetModeData (Ip, &Ip4ModeData, NULL, NULL);
Ip4ConfigData->StationAddress = Ip4ModeData.ConfigData.StationAddress;
Ip4ConfigData->SubnetMask = Ip4ModeData.ConfigData.SubnetMask;
}
CopyMem (&IpInfo->Addr, &Ip4ConfigData->StationAddress, sizeof (IP4_ADDR));
CopyMem (&IpInfo->SubnetMask, &Ip4ConfigData->SubnetMask, sizeof (IP4_ADDR));
Status = Ip->Receive (Ip, &IpInfo->DummyRcvToken);
if (EFI_ERROR (Status)) {
Ip->Configure (Ip, NULL);
}
} else {
//
// The IP instance is reseted, set the stored Addr and SubnetMask to zero.
//
IpInfo->Addr = 0;
IpInfo->SubnetMask =0;
}
OnExit:
return Status;
}
/**
Destroy an IP instance maintained in IpIo->IpList for
sending purpose.
This function pairs with IpIoAddIp(). The IpInfo is previously created by
IpIoAddIp(). The IP_IO_IP_INFO::RefCnt is decremented and the IP instance
will be dstroyed if the RefCnt is zero.
@param[in] IpIo Pointer to the IP_IO instance.
@param[in] IpInfo Pointer to the IpInfo to be removed.
**/
VOID
EFIAPI
IpIoRemoveIp (
IN IP_IO *IpIo,
IN IP_IO_IP_INFO *IpInfo
)
{
ASSERT (IpInfo->RefCnt > 0);
NET_PUT_REF (IpInfo);
if (IpInfo->RefCnt > 0) {
return;
}
RemoveEntryList (&IpInfo->Entry);
IpInfo->Ip->Configure (IpInfo->Ip, NULL);
IpIoCloseProtocolDestroyIpChild (IpIo->Controller, IpIo->Image, IpInfo->ChildHandle);
gBS->CloseEvent (IpInfo->DummyRcvToken.Event);
gBS->FreePool (IpInfo);
}
/**
Find the first IP protocol maintained in IpIo whose local
address is the same with Src.
This function is called when the caller needs the IpIo to send data to the
specified Src. The IpIo was added previously by IpIoAddIp().
@param[in, out] IpIo Pointer to the pointer of the IP_IO instance.
@param[in] Src The local IP address.
@return Pointer to the IP protocol can be used for sending purpose and its local
@return address is the same with Src.
**/
IP_IO_IP_INFO *
EFIAPI
IpIoFindSender (
IN OUT IP_IO **IpIo,
IN IP4_ADDR Src
)
{
LIST_ENTRY *IpIoEntry;
IP_IO *IpIoPtr;
LIST_ENTRY *IpInfoEntry;
IP_IO_IP_INFO *IpInfo;
NET_LIST_FOR_EACH (IpIoEntry, &mActiveIpIoList) {
IpIoPtr = NET_LIST_USER_STRUCT (IpIoEntry, IP_IO, Entry);
if ((*IpIo != NULL) && (*IpIo != IpIoPtr)) {
continue;
}
NET_LIST_FOR_EACH (IpInfoEntry, &IpIoPtr->IpList) {
IpInfo = NET_LIST_USER_STRUCT (IpInfoEntry, IP_IO_IP_INFO, Entry);
if (IpInfo->Addr == Src) {
*IpIo = IpIoPtr;
return IpInfo;
}
}
}
//
// No match.
//
return NULL;
}
/**
Get the ICMP error map information.
The ErrorStatus will be returned. The IsHard and Notify are optional. If they
are not NULL, this routine will fill them.
@param[in] IcmpError IcmpError Type.
@param[out] IsHard Whether it is a hard error.
@param[out] Notify Whether it need to notify SockError.
@return ICMP Error Status, such as EFI_NETWORK_UNREACHABLE.
**/
EFI_STATUS
EFIAPI
IpIoGetIcmpErrStatus (
IN ICMP_ERROR IcmpError,
OUT BOOLEAN *IsHard OPTIONAL,
OUT BOOLEAN *Notify OPTIONAL
)
{
ASSERT ((IcmpError >= ICMP_ERR_UNREACH_NET) && (IcmpError <= ICMP_ERR_PARAMPROB));
if (IsHard != NULL) {
*IsHard = mIcmpErrMap[IcmpError].IsHard;
}
if (Notify != NULL) {
*Notify = mIcmpErrMap[IcmpError].Notify;
}
switch (IcmpError) {
case ICMP_ERR_UNREACH_NET:
return EFI_NETWORK_UNREACHABLE;
case ICMP_ERR_TIMXCEED_INTRANS:
case ICMP_ERR_TIMXCEED_REASS:
case ICMP_ERR_UNREACH_HOST:
return EFI_HOST_UNREACHABLE;
case ICMP_ERR_UNREACH_PROTOCOL:
return EFI_PROTOCOL_UNREACHABLE;
case ICMP_ERR_UNREACH_PORT:
return EFI_PORT_UNREACHABLE;
case ICMP_ERR_MSGSIZE:
case ICMP_ERR_UNREACH_SRCFAIL:
case ICMP_ERR_QUENCH:
case ICMP_ERR_PARAMPROB:
return EFI_ICMP_ERROR;
}
//
// will never run here!
//
ASSERT (FALSE);
return EFI_UNSUPPORTED;
}