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Scrubbed part of the code. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6548 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jgong5 2008-11-14 09:16:11 +00:00
parent faac3f0cfe
commit f92046412a
6 changed files with 750 additions and 243 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Driver.c
View File

@ -31,19 +31,23 @@ EFI_DRIVER_BINDING_PROTOCOL gDhcp4DriverBinding = {
NULL
};
EFI_SERVICE_BINDING_PROTOCOL mDhcp4ServiceBindingTemplete = {
EFI_SERVICE_BINDING_PROTOCOL mDhcp4ServiceBindingTemplate = {
Dhcp4ServiceBindingCreateChild,
Dhcp4ServiceBindingDestroyChild
};
/**
This is the declaration of an EFI image entry point. This entry point is
the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
both device drivers and bus drivers.
Entry point of the DHCP driver to install various protocols.
@param ImageHandle The image handle of the driver.
@param SystemTable The system table.
@param ImageHandle The firmware allocated handle for the UEFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCES if the driver binding and component name protocols are successfully
@retval Others Failed to install the protocols.
@retval EFI_SUCCESS The operation completed successfully.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
@ -65,14 +69,20 @@ Dhcp4DriverEntryPoint (
/**
Test to see if DHCP driver supports the ControllerHandle.
Test to see if this driver supports ControllerHandle. This service
is called by the EFI boot service ConnectController(). In
order to make drivers as small as possible, there are a few calling
restrictions for this service. ConnectController() must
follow these calling restrictions. If any other agent wishes to call
Supported() it must also follow these calling restrictions.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to test
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCES This driver supports this device
@retval EFI_SUCCESS This driver supports this device
@retval EFI_ALREADY_STARTED This driver is already running on this device
@retval other This driver does not support this device
**/
@ -144,12 +154,12 @@ DhcpConfigUdpIo (
/**
Destory the DHCP service. The Dhcp4 service may be partly initialized,
or partly destoried. If a resource is destoried, it is marked as so in
case the destory failed and being called again later.
or partly destroyed. If a resource is destroyed, it is marked as so in
case the destroy failed and being called again later.
@param DhcpSb The DHCP service instance to destory.
@retval EFI_SUCCESS The DHCP service is successfully closed.
@retval EFI_SUCCESS Always return success.
**/
EFI_STATUS
@ -187,6 +197,7 @@ Dhcp4CloseService (
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource .
@retval EFI_SUCCESS The DHCP service instance is created.
@retval other Other error occurs.
**/
EFI_STATUS
@ -207,7 +218,6 @@ Dhcp4CreateService (
}
DhcpSb->Signature = DHCP_SERVICE_SIGNATURE;
DhcpSb->ServiceBinding = mDhcp4ServiceBindingTemplete;
DhcpSb->ServiceState = DHCP_UNCONFIGED;
DhcpSb->InDestory = FALSE;
DhcpSb->Controller = Controller;
@ -215,7 +225,11 @@ Dhcp4CreateService (
InitializeListHead (&DhcpSb->Children);
DhcpSb->DhcpState = Dhcp4Stopped;
DhcpSb->Xid = NET_RANDOM (NetRandomInitSeed ());
CopyMem (
&DhcpSb->ServiceBinding,
&mDhcp4ServiceBindingTemplate,
sizeof (EFI_SERVICE_BINDING_PROTOCOL)
);
//
// Create various resources, UdpIo, Timer, and get Mac address
//
@ -254,14 +268,19 @@ ON_ERROR:
/**
Start this driver on ControllerHandle.
Start this driver on ControllerHandle. This service is called by the
EFI boot service ConnectController(). In order to make
drivers as small as possible, there are a few calling restrictions for
this service. ConnectController() must follow these
calling restrictions. If any other agent wishes to call Start() it
must also follow these calling restrictions.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to bind driver to
@param RemainingDevicePath Optional parameter use to pick a specific child
device to start.
@retval EFI_SUCCES This driver is added to ControllerHandle
@retval EFI_SUCCESS This driver is added to ControllerHandle
@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle
@retval other This driver does not support this device
@ -329,15 +348,20 @@ ON_ERROR:
/**
Stop this driver on ControllerHandle.
Stop this driver on ControllerHandle. This service is called by the
EFI boot service DisconnectController(). In order to
make drivers as small as possible, there are a few calling
restrictions for this service. DisconnectController()
must follow these calling restrictions. If any other agent wishes
to call Stop() it must also follow these calling restrictions.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to stop driver on
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number
of children is zero stop the entire bus driver.
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
children is zero stop the entire bus driver.
@param ChildHandleBuffer List of Child Handles to Stop.
@retval EFI_SUCCES This driver is removed ControllerHandle
@retval EFI_SUCCESS This driver is removed ControllerHandle
@retval other This driver was not removed from this device
**/
@ -424,7 +448,7 @@ Dhcp4DriverBindingStop (
/**
Initialize a new DHCP child.
Initialize a new DHCP instance.
@param DhcpSb The dhcp service instance
@param Instance The dhcp instance to initialize
@ -435,7 +459,7 @@ Dhcp4DriverBindingStop (
VOID
DhcpInitProtocol (
IN DHCP_SERVICE *DhcpSb,
IN DHCP_PROTOCOL *Instance
IN OUT DHCP_PROTOCOL *Instance
)
{
Instance->Signature = DHCP_PROTOCOL_SIGNATURE;
@ -453,17 +477,17 @@ DhcpInitProtocol (
/**
Creates a child handle with a set of DHCP4 services.
Creates a child handle with a set of I/O services.
@param This Protocol instance pointer.
@param ChildHandle Pointer to the handle of the child to create. If
it is NULL, then a new handle is created. If it
is not NULL, then the DHCP4 services are added to
the existing child handle.
@param ChildHandle Pointer to the handle of the child to create. If it is NULL,
then a new handle is created. If it is not NULL, then the
I/O services are added to the existing child handle.
@retval EFI_SUCCES The child handle was created with the DHCP4
services
@retval EFI_OUT_OF_RESOURCES There are not enough resources to create the child
@retval EFI_SUCCES The child handle was created with the I/O services
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create
the child
@retval other The child handle was not created
**/
@ -545,17 +569,17 @@ Dhcp4ServiceBindingCreateChild (
/**
Destroys a child handle with a set of DHCP4 services.
Destroys a child handle with a set of I/O services.
@param This Protocol instance pointer.
@param ChildHandle Handle of the child to destroy
@retval EFI_SUCCES The DHCP4 service is removed from the child handle
@retval EFI_UNSUPPORTED The child handle does not support the DHCP4
service
@retval EFI_SUCCES The I/O services were removed from the child handle
@retval EFI_UNSUPPORTED The child handle does not support the I/O services
that are being removed.
@retval EFI_INVALID_PARAMETER Child handle is not a valid EFI Handle.
@retval EFI_ACCESS_DENIED The child handle could not be destroyed because
its DHCP4 services are being used.
@retval EFI_ACCESS_DENIED The child handle could not be destroyed because its
I/O services are being used.
@retval other The child handle was not destroyed
**/
@ -600,8 +624,8 @@ Dhcp4ServiceBindingDestroyChild (
}
//
// A child can be destoried more than once. For example,
// Dhcp4DriverBindingStop will destory all of its children.
// A child can be destroyed more than once. For example,
// Dhcp4DriverBindingStop will destroy all of its children.
// when caller driver is being stopped, it will destory the
// dhcp child it opens.
//

679
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c
View File

@ -23,16 +23,340 @@ Abstract:
#include "Dhcp4Impl.h"
/**
Returns the current operating mode and cached data packet for the EFI DHCPv4 Protocol driver.
The GetModeData() function returns the current operating mode and cached data
packet for the EFI DHCPv4 Protocol driver.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Dhcp4ModeData Pointer to storage for the EFI_DHCP4_MODE_DATA structure.
@retval EFI_SUCCESS The mode data was returned.
@retval EFI_INVALID_PARAMETER This is NULL.
**/
EFI_STATUS
EFIAPI
EfiDhcp4GetModeData (
IN EFI_DHCP4_PROTOCOL *This,
OUT EFI_DHCP4_MODE_DATA *Dhcp4ModeData
);
/**
Get the current operation parameter and lease for the network interface.
Initializes, changes, or resets the operational settings for the EFI DHCPv4 Protocol driver.
@param This The DHCP protocol instance
@param Dhcp4ModeData The variable to save the DHCP mode data.
The Configure() function is used to initialize, change, or reset the operational
settings of the EFI DHCPv4 Protocol driver for the communication device on which
the EFI DHCPv4 Service Binding Protocol is installed. This function can be
successfully called only if both of the following are true:
* This instance of the EFI DHCPv4 Protocol driver is in the Dhcp4Stopped, Dhcp4Init,
Dhcp4InitReboot, or Dhcp4Bound states.
* No other EFI DHCPv4 Protocol driver instance that is controlled by this EFI
DHCPv4 Service Binding Protocol driver instance has configured this EFI DHCPv4
Protocol driver.
When this driver is in the Dhcp4Stopped state, it can transfer into one of the
following two possible initial states:
* Dhcp4Init
* Dhcp4InitReboot
The driver can transfer into these states by calling Configure() with a non-NULL
Dhcp4CfgData. The driver will transfer into the appropriate state based on the
supplied client network address in the ClientAddress parameter and DHCP options
in the OptionList parameter as described in RFC 2131.
When Configure() is called successfully while Dhcp4CfgData is set to NULL, the
default configuring data will be reset in the EFI DHCPv4 Protocol driver and
the state of the EFI DHCPv4 Protocol driver will not be changed. If one instance
wants to make it possible for another instance to configure the EFI DHCPv4 Protocol
driver, it must call this function with Dhcp4CfgData set to NULL.
@retval EFI_INVALID_PARAMETER The parameter is invalid
@retval EFI_SUCCESS The Dhcp4ModeData is updated with the current
operation parameter.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Dhcp4CfgData Pointer to the EFI_DHCP4_CONFIG_DATA.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Init or
Dhcp4InitReboot state, if the original state of this driver
was Dhcp4Stopped and the value of Dhcp4CfgData was
not NULL. Otherwise, the state was left unchanged.
@retval EFI_ACCESS_DENIED This instance of the EFI DHCPv4 Protocol driver was not in the
Dhcp4Stopped, Dhcp4Init, Dhcp4InitReboot, or Dhcp4Bound state;
Or onother instance of this EFI DHCPv4 Protocol driver is already
in a valid configured state.
@retval EFI_INVALID_PARAMETER Some parameter is NULL.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
EfiDhcp4Configure (
IN EFI_DHCP4_PROTOCOL *This,
IN EFI_DHCP4_CONFIG_DATA *Dhcp4CfgData OPTIONAL
);
/**
Starts the DHCP configuration process.
The Start() function starts the DHCP configuration process. This function can
be called only when the EFI DHCPv4 Protocol driver is in the Dhcp4Init or
Dhcp4InitReboot state.
If the DHCP process completes successfully, the state of the EFI DHCPv4 Protocol
driver will be transferred through Dhcp4Selecting and Dhcp4Requesting to the
Dhcp4Bound state. The CompletionEvent will then be signaled if it is not NULL.
If the process aborts, either by the user or by some unexpected network error,
the state is restored to the Dhcp4Init state. The Start() function can be called
again to restart the process.
Refer to RFC 2131 for precise state transitions during this process. At the
time when each event occurs in this process, the callback function that was set
by EFI_DHCP4_PROTOCOL.Configure() will be called and the user can take this
opportunity to control the process.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param CompletionEvent If not NULL, indicates the event that will be signaled when the
EFI DHCPv4 Protocol driver is transferred into the
Dhcp4Bound state or when the DHCP process is aborted.
EFI_DHCP4_PROTOCOL.GetModeData() can be called to
check the completion status. If NULL,
EFI_DHCP4_PROTOCOL.Start() will wait until the driver
is transferred into the Dhcp4Bound state or the process fails.
@retval EFI_SUCCESS The DHCP configuration process has started, or it has completed
when CompletionEvent is NULL.
@retval EFI_NOT_STARTED The EFI DHCPv4 Protocol driver is in the Dhcp4Stopped
state. EFI_DHCP4_PROTOCOL. Configure() needs to be called.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_TIMEOUT The DHCP configuration process failed because no response was
received from the server within the specified timeout value.
@retval EFI_ABORTED The user aborted the DHCP process.
@retval EFI_ALREADY_STARTED Some other EFI DHCPv4 Protocol instance already started the
DHCP process.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
EfiDhcp4Start (
IN EFI_DHCP4_PROTOCOL *This,
IN EFI_EVENT CompletionEvent OPTIONAL
);
/**
Extends the lease time by sending a request packet.
The RenewRebind() function is used to manually extend the lease time when the
EFI DHCPv4 Protocol driver is in the Dhcp4Bound state and the lease time has
not expired yet. This function will send a request packet to the previously
found server (or to any server when RebindRequest is TRUE) and transfer the
state into the Dhcp4Renewing state (or Dhcp4Rebinding when RebindingRequest is
TRUE). When a response is received, the state is returned to Dhcp4Bound.
If no response is received before the try count is exceeded (the RequestTryCount
field that is specified in EFI_DHCP4_CONFIG_DATA) but before the lease time that
was issued by the previous server expires, the driver will return to the Dhcp4Bound
state and the previous configuration is restored. The outgoing and incoming packets
can be captured by the EFI_DHCP4_CALLBACK function.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param RebindRequest If TRUE, this function broadcasts the request packets and enters
the Dhcp4Rebinding state. Otherwise, it sends a unicast
request packet and enters the Dhcp4Renewing state.
@param CompletionEvent If not NULL, this event is signaled when the renew/rebind phase
completes or some error occurs.
EFI_DHCP4_PROTOCOL.GetModeData() can be called to
check the completion status. If NULL,
EFI_DHCP4_PROTOCOL.RenewRebind() will busy-wait
until the DHCP process finishes.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the
Dhcp4Renewing state or is back to the Dhcp4Bound state.
@retval EFI_NOT_STARTED The EFI DHCPv4 Protocol driver is in the Dhcp4Stopped
state. EFI_DHCP4_PROTOCOL.Configure() needs to
be called.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_TIMEOUT There was no response from the server when the try count was
exceeded.
@retval EFI_ACCESS_DENIED The driver is not in the Dhcp4Bound state.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
EfiDhcp4RenewRebind (
IN EFI_DHCP4_PROTOCOL *This,
IN BOOLEAN RebindRequest,
IN EFI_EVENT CompletionEvent OPTIONAL
);
/**
Releases the current address configuration.
The Release() function releases the current configured IP address by doing either
of the following:
* Sending a DHCPRELEASE packet when the EFI DHCPv4 Protocol driver is in the
Dhcp4Bound state
* Setting the previously assigned IP address that was provided with the
EFI_DHCP4_PROTOCOL.Configure() function to 0.0.0.0 when the driver is in
Dhcp4InitReboot state
After a successful call to this function, the EFI DHCPv4 Protocol driver returns
to the Dhcp4Init state and any subsequent incoming packets will be discarded silently.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Init phase.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_ACCESS_DENIED The EFI DHCPv4 Protocol driver is not Dhcp4InitReboot state.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
EFIAPI
EfiDhcp4Release (
IN EFI_DHCP4_PROTOCOL *This
);
/**
Stops the current address configuration.
The Stop() function is used to stop the DHCP configuration process. After this
function is called successfully, the EFI DHCPv4 Protocol driver is transferred
into the Dhcp4Stopped state. EFI_DHCP4_PROTOCOL.Configure() needs to be called
before DHCP configuration process can be started again. This function can be
called when the EFI DHCPv4 Protocol driver is in any state.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Stopped phase.
@retval EFI_INVALID_PARAMETER This is NULL.
**/
EFI_STATUS
EFIAPI
EfiDhcp4Stop (
IN EFI_DHCP4_PROTOCOL *This
);
/**
Builds a DHCP packet, given the options to be appended or deleted or replaced.
The Build() function is used to assemble a new packet from the original packet
by replacing or deleting existing options or appending new options. This function
does not change any state of the EFI DHCPv4 Protocol driver and can be used at
any time.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param SeedPacket Initial packet to be used as a base for building new packet.
@param DeleteCount Number of opcodes in the DeleteList.
@param DeleteList List of opcodes to be deleted from the seed packet.
Ignored if DeleteCount is zero.
@param AppendCount Number of entries in the OptionList.
@param AppendList Pointer to a DHCP option list to be appended to SeedPacket.
If SeedPacket also contains options in this list, they are
replaced by new options (except pad option). Ignored if
AppendCount is zero. Type EFI_DHCP4_PACKET_OPTION
@param NewPacket Pointer to storage for the pointer to the new allocated packet.
Use the EFI Boot Service FreePool() on the resulting pointer
when done with the packet.
@retval EFI_SUCCESS The new packet was built.
@retval EFI_OUT_OF_RESOURCES Storage for the new packet could not be allocated.
@retval EFI_INVALID_PARAMETER Some parameter is NULL.
**/
EFI_STATUS
EFIAPI
EfiDhcp4Build (
IN EFI_DHCP4_PROTOCOL *This,
IN EFI_DHCP4_PACKET *SeedPacket,
IN UINT32 DeleteCount,
IN UINT8 *DeleteList OPTIONAL,
IN UINT32 AppendCount,
IN EFI_DHCP4_PACKET_OPTION *AppendList[] OPTIONAL,
OUT EFI_DHCP4_PACKET **NewPacket
);
/**
Transmits a DHCP formatted packet and optionally waits for responses.
The TransmitReceive() function is used to transmit a DHCP packet and optionally
wait for the response from servers. This function does not change the state of
the EFI DHCPv4 Protocol driver and thus can be used at any time.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Token Pointer to the EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN structure.
@retval EFI_SUCCESS The packet was successfully queued for transmission.
@retval EFI_INVALID_PARAMETER Some parameter is NULL.
@retval EFI_NOT_READY The previous call to this function has not finished yet. Try to call
this function after collection process completes.
@retval EFI_NO_MAPPING The default station address is not available yet.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval Others Some other unexpected error occurred.
**/
EFI_STATUS
EFIAPI
EfiDhcp4TransmitReceive (
IN EFI_DHCP4_PROTOCOL *This,
IN EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN *Token
);
/**
Parses the packed DHCP option data.
The Parse() function is used to retrieve the option list from a DHCP packet.
If *OptionCount isn’t zero, and there is enough space for all the DHCP options
in the Packet, each element of PacketOptionList is set to point to somewhere in
the Packet->Dhcp4.Option where a new DHCP option begins. If RFC3396 is supported,
the caller should reassemble the parsed DHCP options to get the finial result.
If *OptionCount is zero or there isn’t enough space for all of them, the number
of DHCP options in the Packet is returned in OptionCount.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Packet Pointer to packet to be parsed.
@param OptionCount On input, the number of entries in the PacketOptionList.
On output, the number of entries that were written into the
PacketOptionList.
@param PacketOptionList List of packet option entries to be filled in. End option or pad
options are not included.
@retval EFI_SUCCESS The packet was successfully parsed.
@retval EFI_INVALID_PARAMETER Some parameter is NULL.
@retval EFI_BUFFER_TOO_SMALL One or more of the following conditions is TRUE:
1) *OptionCount is smaller than the number of options that
were found in the Packet.
2) PacketOptionList is NULL.
**/
EFI_STATUS
EFIAPI
EfiDhcp4Parse (
IN EFI_DHCP4_PROTOCOL *This,
IN EFI_DHCP4_PACKET *Packet,
IN OUT UINT32 *OptionCount,
OUT EFI_DHCP4_PACKET_OPTION *PacketOptionList[] OPTIONAL
);
EFI_DHCP4_PROTOCOL mDhcp4ProtocolTemplate = {
EfiDhcp4GetModeData,
EfiDhcp4Configure,
EfiDhcp4Start,
EfiDhcp4RenewRebind,
EfiDhcp4Release,
EfiDhcp4Stop,
EfiDhcp4Build,
EfiDhcp4TransmitReceive,
EfiDhcp4Parse
};
/**
Returns the current operating mode and cached data packet for the EFI DHCPv4 Protocol driver.
The GetModeData() function returns the current operating mode and cached data
packet for the EFI DHCPv4 Protocol driver.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Dhcp4ModeData Pointer to storage for the EFI_DHCP4_MODE_DATA structure.
@retval EFI_SUCCESS The mode data was returned.
@retval EFI_INVALID_PARAMETER This is NULL.
**/
EFI_STATUS
@ -107,7 +431,7 @@ EfiDhcp4GetModeData (
**/
VOID
DhcpCleanConfigure (
IN EFI_DHCP4_CONFIG_DATA *Config
IN OUT EFI_DHCP4_CONFIG_DATA *Config
)
{
UINT32 Index;
@ -147,7 +471,7 @@ DhcpCleanConfigure (
**/
EFI_STATUS
DhcpCopyConfigure (
IN EFI_DHCP4_CONFIG_DATA *Dst,
OUT EFI_DHCP4_CONFIG_DATA *Dst,
IN EFI_DHCP4_CONFIG_DATA *Src
)
{
@ -271,18 +595,45 @@ DhcpYieldControl (
/**
Configure the DHCP protocol instance and its underlying DHCP service
for operation. If Dhcp4CfgData is NULL and the child is currently
controlling the DHCP service, release the control.
Initializes, changes, or resets the operational settings for the EFI DHCPv4 Protocol driver.
@param This The DHCP protocol instance
@param Dhcp4CfgData The DHCP configure data.
The Configure() function is used to initialize, change, or reset the operational
settings of the EFI DHCPv4 Protocol driver for the communication device on which
the EFI DHCPv4 Service Binding Protocol is installed. This function can be
successfully called only if both of the following are true:
* This instance of the EFI DHCPv4 Protocol driver is in the Dhcp4Stopped, Dhcp4Init,
Dhcp4InitReboot, or Dhcp4Bound states.
* No other EFI DHCPv4 Protocol driver instance that is controlled by this EFI
DHCPv4 Service Binding Protocol driver instance has configured this EFI DHCPv4
Protocol driver.
When this driver is in the Dhcp4Stopped state, it can transfer into one of the
following two possible initial states:
* Dhcp4Init
* Dhcp4InitReboot
The driver can transfer into these states by calling Configure() with a non-NULL
Dhcp4CfgData. The driver will transfer into the appropriate state based on the
supplied client network address in the ClientAddress parameter and DHCP options
in the OptionList parameter as described in RFC 2131.
When Configure() is called successfully while Dhcp4CfgData is set to NULL, the
default configuring data will be reset in the EFI DHCPv4 Protocol driver and
the state of the EFI DHCPv4 Protocol driver will not be changed. If one instance
wants to make it possible for another instance to configure the EFI DHCPv4 Protocol
driver, it must call this function with Dhcp4CfgData set to NULL.
@retval EFI_INVALID_PARAMETER The parameters are invalid.
@retval EFI_ACCESS_DENIED The service isn't in one of configurable states,
or there is already an active child.
@retval EFI_OUT_OF_RESOURCE Failed to allocate some resources.
@retval EFI_SUCCESS The child is configured.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Dhcp4CfgData Pointer to the EFI_DHCP4_CONFIG_DATA.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Init or
Dhcp4InitReboot state, if the original state of this driver
was Dhcp4Stopped and the value of Dhcp4CfgData was
not NULL. Otherwise, the state was left unchanged.
@retval EFI_ACCESS_DENIED This instance of the EFI DHCPv4 Protocol driver was not in the
Dhcp4Stopped, Dhcp4Init, Dhcp4InitReboot, or Dhcp4Bound state;
Or onother instance of this EFI DHCPv4 Protocol driver is already
in a valid configured state.
@retval EFI_INVALID_PARAMETER Some parameter is NULL.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
@ -394,15 +745,43 @@ ON_EXIT:
/**
Start the DHCP process.
Starts the DHCP configuration process.
@param This The DHCP protocol instance
@param CompletionEvent The event to signal is address is acquired.
The Start() function starts the DHCP configuration process. This function can
be called only when the EFI DHCPv4 Protocol driver is in the Dhcp4Init or
Dhcp4InitReboot state.
If the DHCP process completes successfully, the state of the EFI DHCPv4 Protocol
driver will be transferred through Dhcp4Selecting and Dhcp4Requesting to the
Dhcp4Bound state. The CompletionEvent will then be signaled if it is not NULL.
If the process aborts, either by the user or by some unexpected network error,
the state is restored to the Dhcp4Init state. The Start() function can be called
again to restart the process.
Refer to RFC 2131 for precise state transitions during this process. At the
time when each event occurs in this process, the callback function that was set
by EFI_DHCP4_PROTOCOL.Configure() will be called and the user can take this
opportunity to control the process.
@retval EFI_INVALID_PARAMETER The parameters are invalid.
@retval EFI_NOT_STARTED The protocol hasn't been configured.
@retval EFI_ALREADY_STARTED The DHCP process has already been started.
@retval EFI_SUCCESS The DHCP process is started.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param CompletionEvent If not NULL, indicates the event that will be signaled when the
EFI DHCPv4 Protocol driver is transferred into the
Dhcp4Bound state or when the DHCP process is aborted.
EFI_DHCP4_PROTOCOL.GetModeData() can be called to
check the completion status. If NULL,
EFI_DHCP4_PROTOCOL.Start() will wait until the driver
is transferred into the Dhcp4Bound state or the process fails.
@retval EFI_SUCCESS The DHCP configuration process has started, or it has completed
when CompletionEvent is NULL.
@retval EFI_NOT_STARTED The EFI DHCPv4 Protocol driver is in the Dhcp4Stopped
state. EFI_DHCP4_PROTOCOL. Configure() needs to be called.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_TIMEOUT The DHCP configuration process failed because no response was
received from the server within the specified timeout value.
@retval EFI_ABORTED The user aborted the DHCP process.
@retval EFI_ALREADY_STARTED Some other EFI DHCPv4 Protocol instance already started the
DHCP process.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
@ -482,16 +861,41 @@ ON_ERROR:
/**
Request an extra manual renew/rebind.
Extends the lease time by sending a request packet.
@param This The DHCP protocol instance
@param RebindRequest TRUE if request a rebind, otherwise renew it
@param CompletionEvent Event to signal when complete
The RenewRebind() function is used to manually extend the lease time when the
EFI DHCPv4 Protocol driver is in the Dhcp4Bound state and the lease time has
not expired yet. This function will send a request packet to the previously
found server (or to any server when RebindRequest is TRUE) and transfer the
state into the Dhcp4Renewing state (or Dhcp4Rebinding when RebindingRequest is
TRUE). When a response is received, the state is returned to Dhcp4Bound.
If no response is received before the try count is exceeded (the RequestTryCount
field that is specified in EFI_DHCP4_CONFIG_DATA) but before the lease time that
was issued by the previous server expires, the driver will return to the Dhcp4Bound
state and the previous configuration is restored. The outgoing and incoming packets
can be captured by the EFI_DHCP4_CALLBACK function.
@retval EFI_INVALID_PARAMETER The parameters are invalid
@retval EFI_NOT_STARTED The DHCP protocol hasn't been started.
@retval EFI_ACCESS_DENIED The DHCP protocol isn't in Bound state.
@retval EFI_SUCCESS The DHCP is renewed/rebound.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param RebindRequest If TRUE, this function broadcasts the request packets and enters
the Dhcp4Rebinding state. Otherwise, it sends a unicast
request packet and enters the Dhcp4Renewing state.
@param CompletionEvent If not NULL, this event is signaled when the renew/rebind phase
completes or some error occurs.
EFI_DHCP4_PROTOCOL.GetModeData() can be called to
check the completion status. If NULL,
EFI_DHCP4_PROTOCOL.RenewRebind() will busy-wait
until the DHCP process finishes.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the
Dhcp4Renewing state or is back to the Dhcp4Bound state.
@retval EFI_NOT_STARTED The EFI DHCPv4 Protocol driver is in the Dhcp4Stopped
state. EFI_DHCP4_PROTOCOL.Configure() needs to
be called.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_TIMEOUT There was no response from the server when the try count was
exceeded.
@retval EFI_ACCESS_DENIED The driver is not in the Dhcp4Bound state.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
@ -582,15 +986,24 @@ ON_ERROR:
/**
Release the current acquired lease.
Releases the current address configuration.
@param This The DHCP protocol instance
The Release() function releases the current configured IP address by doing either
of the following:
* Sending a DHCPRELEASE packet when the EFI DHCPv4 Protocol driver is in the
Dhcp4Bound state
* Setting the previously assigned IP address that was provided with the
EFI_DHCP4_PROTOCOL.Configure() function to 0.0.0.0 when the driver is in
Dhcp4InitReboot state
After a successful call to this function, the EFI DHCPv4 Protocol driver returns
to the Dhcp4Init state and any subsequent incoming packets will be discarded silently.
@retval EFI_INVALID_PARAMETER The parameter is invalid
@retval EFI_DEVICE_ERROR Failed to transmit the DHCP release packet
@retval EFI_ACCESS_DENIED The DHCP service isn't in one of the connected
state.
@retval EFI_SUCCESS The lease is released.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Init phase.
@retval EFI_INVALID_PARAMETER This is NULL.
@retval EFI_ACCESS_DENIED The EFI DHCPv4 Protocol driver is not Dhcp4InitReboot state.
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
**/
EFI_STATUS
@ -650,13 +1063,18 @@ ON_EXIT:
/**
Stop the current DHCP process. After this, other DHCP child
can gain control of the service, configure and use it.
Stops the current address configuration.
@param This The DHCP protocol instance
The Stop() function is used to stop the DHCP configuration process. After this
function is called successfully, the EFI DHCPv4 Protocol driver is transferred
into the Dhcp4Stopped state. EFI_DHCP4_PROTOCOL.Configure() needs to be called
before DHCP configuration process can be started again. This function can be
called when the EFI DHCPv4 Protocol driver is in any state.
@retval EFI_INVALID_PARAMETER The parameter is invalid.
@retval EFI_SUCCESS The DHCP process is stopped.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@retval EFI_SUCCESS The EFI DHCPv4 Protocol driver is now in the Dhcp4Stopped phase.
@retval EFI_INVALID_PARAMETER This is NULL.
**/
EFI_STATUS
@ -696,21 +1114,30 @@ EfiDhcp4Stop (
/**
Build a new DHCP packet from the seed packet. Options may be deleted or
appended. The caller should free the NewPacket when finished using it.
Builds a DHCP packet, given the options to be appended or deleted or replaced.
@param This The DHCP protocol instance.
@param SeedPacket The seed packet to start with
@param DeleteCount The number of options to delete
@param DeleteList The options to delete from the packet
@param AppendCount The number of options to append
@param AppendList The options to append to the packet
@param NewPacket The new packet, allocated and built by this
function.
The Build() function is used to assemble a new packet from the original packet
by replacing or deleting existing options or appending new options. This function
does not change any state of the EFI DHCPv4 Protocol driver and can be used at
any time.
@retval EFI_INVALID_PARAMETER The parameters are invalid.
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory
@retval EFI_SUCCESS The packet is build.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param SeedPacket Initial packet to be used as a base for building new packet.
@param DeleteCount Number of opcodes in the DeleteList.
@param DeleteList List of opcodes to be deleted from the seed packet.
Ignored if DeleteCount is zero.
@param AppendCount Number of entries in the OptionList.
@param AppendList Pointer to a DHCP option list to be appended to SeedPacket.
If SeedPacket also contains options in this list, they are
replaced by new options (except pad option). Ignored if
AppendCount is zero. Type EFI_DHCP4_PACKET_OPTION
@param NewPacket Pointer to storage for the pointer to the new allocated packet.
Use the EFI Boot Service FreePool() on the resulting pointer
when done with the packet.
@retval EFI_SUCCESS The new packet was built.
@retval EFI_OUT_OF_RESOURCES Storage for the new packet could not be allocated.
@retval EFI_INVALID_PARAMETER Some parameter is NULL.
**/
EFI_STATUS
@ -755,6 +1182,15 @@ EfiDhcp4Build (
);
}
/**
Callback by UdpIoCreatePort() when creating UdpIo for this Dhcp4 instance.
@param UdpIo The UdpIo being created.
@param Context Dhcp4 instance.
@retval EFI_SUCCESS UdpIo is configured successfully.
@retval other Other error occurs.
**/
EFI_STATUS
Dhcp4InstanceConfigUdpIo (
IN UDP_IO_PORT *UdpIo,
@ -793,9 +1229,18 @@ Dhcp4InstanceConfigUdpIo (
return UdpIo->Udp->Configure (UdpIo->Udp, &UdpConfigData);
}
/**
Create UdpIo for this Dhcp4 instance.
@param Instance The Dhcp4 instance.
@retval EFI_SUCCESS UdpIo is created successfully.
@retval EFI_OUT_OF_RESOURCES Fails to create UdpIo because of limited
resources or configuration failure.
**/
EFI_STATUS
Dhcp4InstanceCreateUdpIo (
IN DHCP_PROTOCOL *Instance
IN OUT DHCP_PROTOCOL *Instance
)
{
DHCP_SERVICE *DhcpSb;
@ -811,28 +1256,34 @@ Dhcp4InstanceCreateUdpIo (
}
}
/**
Callback of Dhcp packet. Does nothing.
@param Arg The context.
@return None.
**/
VOID
DhcpDummyExtFree (
IN VOID *Arg
)
/*++
Routine Description:
Release the packet.
Arguments:
Arg - The packet to release
Returns:
None
--*/
{
}
/**
Callback of UdpIoRecvDatagram() that handles a Dhcp4 packet.
Only BOOTP responses will be handled that correspond to the Xid of the request
sent out. The packet will be queued to the response queue.
@param UdpPacket The Dhcp4 packet.
@param Points Udp4 address pair.
@param IoStatus Status of the input.
@param Context Extra info for the input.
@return None.
**/
VOID
PxeDhcpInput (
NET_BUF *UdpPacket,
@ -856,7 +1307,7 @@ PxeDhcpInput (
DhcpSb = Instance->Service;
//
// Don't restart receive if error occurs or DHCP is destoried.
// Don't restart receive if error occurs or DHCP is destroyed.
//
if (EFI_ERROR (IoStatus)) {
return ;
@ -930,6 +1381,14 @@ RESTART:
}
}
/**
Complete a Dhcp4 transaction and signal the upper layer.
@param Instance Dhcp4 instance.
@return None.
**/
VOID
PxeDhcpDone (
IN DHCP_PROTOCOL *Instance
@ -948,7 +1407,7 @@ PxeDhcpDone (
}
//
// Copy the recieved DHCP responses.
// Copy the received DHCP responses.
//
NetbufQueCopy (&Instance->ResponseQueue, 0, Instance->ResponseQueue.BufSize, (UINT8 *) Token->ResponseList);
Token->Status = EFI_SUCCESS;
@ -959,7 +1418,7 @@ PxeDhcpDone (
SIGNAL_USER:
//
// Clean the resources dedicated for this transmit receive transaction.
// Clean up the resources dedicated for this transmit receive transaction.
//
NetbufQueFlush (&Instance->ResponseQueue);
UdpIoCleanPort (Instance->UdpIo);
@ -976,6 +1435,10 @@ SIGNAL_USER:
/**
Transmits a DHCP formatted packet and optionally waits for responses.
The TransmitReceive() function is used to transmit a DHCP packet and optionally
wait for the response from servers. This function does not change the state of
the EFI DHCPv4 Protocol driver and thus can be used at any time.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Token Pointer to the EFI_DHCP4_TRANSMIT_RECEIVE_TOKEN structure.
@ -1025,11 +1488,12 @@ EfiDhcp4TransmitReceive (
(Token->TimeoutValue == 0) ||
((Token->ListenPointCount != 0) && (Token->ListenPoints == NULL)) ||
EFI_ERROR (DhcpValidateOptions (Token->Packet, NULL)) ||
EFI_IP4_EQUAL (&Token->RemoteAddress, &mZeroIp4Addr)) {
EFI_IP4_EQUAL (&Token->RemoteAddress, &mZeroIp4Addr)
) {
//
// The DHCP packet isn't well-formed, the Transaction ID is already used
// , the timeout value is zero, the ListenPoint is invalid,
// or the RemoteAddress is zero.
// The DHCP packet isn't well-formed, the Transaction ID is already used,
// the timeout value is zero, the ListenPoint is invalid, or the
// RemoteAddress is zero.
//
return EFI_INVALID_PARAMETER;
}
@ -1058,7 +1522,11 @@ EfiDhcp4TransmitReceive (
//
// Save the Client Address is sent out
//
CopyMem (&DhcpSb->ClientAddressSendOut[0], &Token->Packet->Dhcp4.Header.ClientHwAddr[0], Token->Packet->Dhcp4.Header.HwAddrLen);
CopyMem (
&DhcpSb->ClientAddressSendOut[0],
&Token->Packet->Dhcp4.Header.ClientHwAddr[0],
Token->Packet->Dhcp4.Header.HwAddrLen
);
//
// Wrap the DHCP packet into a net buffer.
@ -1147,7 +1615,7 @@ ON_ERROR:
the individual DHCP option in the packet.
@param Tag The DHCP option type
@param Len length of the DHCP option data
@param Len Length of the DHCP option data
@param Data The DHCP option data
@param Context The context, to pass several parameters in.
@ -1181,18 +1649,30 @@ Dhcp4ParseCheckOption (
/**
Parse the DHCP options in the Packet into the PacketOptionList.
User should allocate this array of EFI_DHCP4_PACKET_OPTION points.
Parses the packed DHCP option data.
@param This The DHCP protocol instance
@param Packet The DHCP packet to parse
@param OptionCount On input, the size of the PacketOptionList; On
output, the actual number of options processed.
@param PacketOptionList The array of EFI_DHCP4_PACKET_OPTION points
The Parse() function is used to retrieve the option list from a DHCP packet.
If *OptionCount isn’t zero, and there is enough space for all the DHCP options
in the Packet, each element of PacketOptionList is set to point to somewhere in
the Packet->Dhcp4.Option where a new DHCP option begins. If RFC3396 is supported,
the caller should reassemble the parsed DHCP options to get the finial result.
If *OptionCount is zero or there isn’t enough space for all of them, the number
of DHCP options in the Packet is returned in OptionCount.
@retval EFI_INVALID_PARAMETER The parameters are invalid.
@retval EFI_BUFFER_TOO_SMALL A bigger array of points is needed.
@retval EFI_SUCCESS The options are parsed.
@param This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param Packet Pointer to packet to be parsed.
@param OptionCount On input, the number of entries in the PacketOptionList.
On output, the number of entries that were written into the
PacketOptionList.
@param PacketOptionList List of packet option entries to be filled in. End option or pad
options are not included.
@retval EFI_SUCCESS The packet was successfully parsed.
@retval EFI_INVALID_PARAMETER Some parameter is NULL.
@retval EFI_BUFFER_TOO_SMALL One or more of the following conditions is TRUE:
1) *OptionCount is smaller than the number of options that
were found in the Packet.
2) PacketOptionList is NULL.
**/
EFI_STATUS
@ -1245,16 +1725,3 @@ EfiDhcp4Parse (
return EFI_SUCCESS;
}
EFI_DHCP4_PROTOCOL mDhcp4ProtocolTemplate = {
EfiDhcp4GetModeData,
EfiDhcp4Configure,
EfiDhcp4Start,
EfiDhcp4RenewRebind,
EfiDhcp4Release,
EfiDhcp4Stop,
EfiDhcp4Build,
EfiDhcp4TransmitReceive,
EfiDhcp4Parse
};

43
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c
View File

@ -33,6 +33,7 @@ UINT32 mDhcp4DefaultTimeout[4] = { 4, 8, 16, 32 };
@param DhcpSb The DHCP service instance
@retval EFI_SUCCESS The request has been sent
@retval other Some error occurs when sending the request.
**/
EFI_STATUS
@ -140,7 +141,7 @@ DhcpCallUser (
Notify the user about the operation result.
@param DhcpSb DHCP service instance
@param Which which notify function to signal
@param Which Which notify function to signal
@return None
@ -158,14 +159,16 @@ DhcpNotifyUser (
}
if ((Child->CompletionEvent != NULL) &&
((Which == DHCP_NOTIFY_COMPLETION) || (Which == DHCP_NOTIFY_ALL))) {
((Which == DHCP_NOTIFY_COMPLETION) || (Which == DHCP_NOTIFY_ALL))
) {
gBS->SignalEvent (Child->CompletionEvent);
Child->CompletionEvent = NULL;
}
if ((Child->RenewRebindEvent != NULL) &&
((Which == DHCP_NOTIFY_RENEWREBIND) || (Which == DHCP_NOTIFY_ALL))) {
((Which == DHCP_NOTIFY_RENEWREBIND) || (Which == DHCP_NOTIFY_ALL))
) {
gBS->SignalEvent (Child->RenewRebindEvent);
Child->RenewRebindEvent = NULL;
@ -191,7 +194,7 @@ DhcpNotifyUser (
**/
EFI_STATUS
DhcpSetState (
IN DHCP_SERVICE *DhcpSb,
IN OUT DHCP_SERVICE *DhcpSb,
IN INTN State,
IN BOOLEAN CallUser
)
@ -251,7 +254,7 @@ DhcpSetState (
**/
VOID
DhcpSetTransmitTimer (
IN DHCP_SERVICE *DhcpSb
IN OUT DHCP_SERVICE *DhcpSb
)
{
UINT32 *Times;
@ -287,7 +290,7 @@ DhcpSetTransmitTimer (
**/
VOID
DhcpComputeLease (
IN DHCP_SERVICE *DhcpSb,
IN OUT DHCP_SERVICE *DhcpSb,
IN DHCP_PARAMETER *Para
)
{
@ -317,7 +320,7 @@ DhcpComputeLease (
such as DHCP release.
@param UdpIo The UDP IO port to configure
@param Context The opaque parameter to the function.
@param Context Dhcp service instance.
@retval EFI_SUCCESS The UDP IO port is successfully configured.
@retval Others It failed to configure the port.
@ -395,7 +398,7 @@ DhcpConfigLeaseIoPort (
**/
EFI_STATUS
DhcpLeaseAcquired (
IN DHCP_SERVICE *DhcpSb
IN OUT DHCP_SERVICE *DhcpSb
)
{
INTN Class;
@ -635,7 +638,8 @@ DhcpHandleSelect (
// Don't return a error for these two case otherwise the session is ended.
//
if (!DHCP_IS_BOOTP (Para) &&
((Para->DhcpType != DHCP_MSG_OFFER) || (Para->ServerId == 0))) {
((Para->DhcpType != DHCP_MSG_OFFER) || (Para->ServerId == 0))
) {
goto ON_EXIT;
}
@ -713,7 +717,8 @@ DhcpHandleRequest (
//
if (DHCP_IS_BOOTP (Para) ||
(Para->ServerId != DhcpSb->Para->ServerId) ||
((Para->DhcpType != DHCP_MSG_ACK) && (Para->DhcpType != DHCP_MSG_NAK))) {
((Para->DhcpType != DHCP_MSG_ACK) && (Para->DhcpType != DHCP_MSG_NAK))
) {
Status = EFI_SUCCESS;
goto ON_EXIT;
@ -804,7 +809,8 @@ DhcpHandleRenewRebind (
//
if (DHCP_IS_BOOTP (Para) ||
(Para->ServerId != DhcpSb->Para->ServerId) ||
((Para->DhcpType != DHCP_MSG_ACK) && (Para->DhcpType != DHCP_MSG_NAK))) {
((Para->DhcpType != DHCP_MSG_ACK) && (Para->DhcpType != DHCP_MSG_NAK))
) {
Status = EFI_SUCCESS;
goto ON_EXIT;
@ -882,7 +888,8 @@ DhcpHandleReboot (
// Ignore the BOOTP message and DHCP messages other than DHCP ACK/NACK
//
if (DHCP_IS_BOOTP (Para) ||
((Para->DhcpType != DHCP_MSG_ACK) && (Para->DhcpType != DHCP_MSG_NAK))) {
((Para->DhcpType != DHCP_MSG_ACK) && (Para->DhcpType != DHCP_MSG_NAK))
) {
Status = EFI_SUCCESS;
goto ON_EXIT;
@ -944,7 +951,7 @@ ON_EXIT:
/**
Handle the received DHCP packets. This function drivers the DHCP
Handle the received DHCP packets. This function drives the DHCP
state machine.
@param UdpPacket The UDP packets received.
@ -1158,6 +1165,7 @@ DhcpOnPacketSent (
@retval EFI_OUT_OF_RESOURCES Failed to allocate resources for the packet
@retval EFI_ACCESS_DENIED Failed to transmit the packet through UDP
@retval EFI_SUCCESS The message is sent
@retval other Other error occurs
**/
EFI_STATUS
@ -1239,7 +1247,8 @@ DhcpSendMessage (
// 3. DHCP request to confirm one lease.
//
if ((Type == DHCP_MSG_DECLINE) || (Type == DHCP_MSG_RELEASE) ||
((Type == DHCP_MSG_REQUEST) && (DhcpSb->DhcpState == Dhcp4Requesting))) {
((Type == DHCP_MSG_REQUEST) && (DhcpSb->DhcpState == Dhcp4Requesting))
) {
ASSERT ((Para != NULL) && (Para->ServerId != 0));
@ -1346,7 +1355,11 @@ DhcpSendMessage (
//
// Save the Client Address will be sent out
//
CopyMem (&DhcpSb->ClientAddressSendOut[0], &Packet->Dhcp4.Header.ClientHwAddr[0], Packet->Dhcp4.Header.HwAddrLen);
CopyMem (
&DhcpSb->ClientAddressSendOut[0],
&Packet->Dhcp4.Header.ClientHwAddr[0],
Packet->Dhcp4.Header.HwAddrLen
);
//

33
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.c
View File

@ -22,11 +22,11 @@ Abstract:
#include "Dhcp4Impl.h"
//
// A list of the format of DHCP Options sorted by option tag
// to validate a dhcp message. Refere the comments of the
// DHCP_OPTION_FORMAT structure.
//
///
/// A list of the format of DHCP Options sorted by option tag
/// to validate a dhcp message. Refere the comments of the
/// DHCP_OPTION_FORMAT structure.
///
DHCP_OPTION_FORMAT DhcpOptionFormats[] = {
{DHCP_TAG_NETMASK, DHCP_OPTION_IP, 1, 1 , TRUE},
{DHCP_TAG_TIME_OFFSET, DHCP_OPTION_INT32, 1, 1 , FALSE},
@ -162,7 +162,8 @@ DhcpFindOptionFormat (
@param OptValue The value of the option
@param Len The length of the option value
@return TRUE is the option is valid, otherwise FALSE.
@retval TRUE The option is valid.
@retval FALSE Otherwise.
**/
BOOLEAN
@ -213,7 +214,8 @@ DhcpOptionIsValid (
Occur = Len / Unit;
if (((Format->MinOccur != -1) && (Occur < Format->MinOccur)) ||
((Format->MaxOccur != -1) && (Occur > Format->MaxOccur))) {
((Format->MaxOccur != -1) && (Occur > Format->MaxOccur))
) {
return FALSE;
}
@ -250,7 +252,7 @@ DhcpGetParameter (
IN UINT8 Tag,
IN INTN Len,
IN UINT8 *Data,
IN DHCP_PARAMETER *Para
OUT DHCP_PARAMETER *Para
)
{
switch (Tag) {
@ -311,7 +313,7 @@ DhcpGetParameter (
@param BufLen The length of the buffer
@param Check The callback function for each option found
@param Context The opaque parameter for the Check
@param Overload variable to save the value of DHCP_TAG_OVERLOAD
@param Overload Variable to save the value of DHCP_TAG_OVERLOAD
option.
@retval EFI_SUCCESS All the options are valid
@ -389,7 +391,7 @@ DhcpIterateBufferOptions (
@param Context The opaque parameter for Check
@retval EFI_SUCCESS The DHCP packet's options are well formated
@retval Others The DHCP packet's options are not well formated
@retval EFI_INVALID_PARAMETER The DHCP packet's options are not well formated
**/
EFI_STATUS
@ -449,7 +451,7 @@ DhcpIterateOptions (
/**
Call back function to DhcpiterateOptions to compute each option's
Call back function to DhcpIterateOptions to compute each option's
length. It just adds the data length of all the occurances of this
Tag. Context is an array of 256 DHCP_OPTION_COUNT.
@ -480,8 +482,8 @@ DhcpGetOptionLen (
/**
Call back function to DhcpiterateOptions to consolidate each option's
data. There are maybe several occurance of the same option.
Call back function to DhcpIterateOptions to consolidate each option's
data. There are maybe several occurrence of the same option.
@param Tag The option to consolidate its data
@param Len The length of option data
@ -536,7 +538,7 @@ DhcpFillOption (
as a UINT8. It then iterates the DHCP packet to get data length of
each option by calling DhcpIterOptions with DhcpGetOptionLen. Now, it
knows the number of present options and their length. It allocates a
array of DHCP_OPTION and a continous buffer after the array to put
array of DHCP_OPTION and a continuous buffer after the array to put
all the options' data. Each option's data is pointed to by the Data
field in DHCP_OPTION structure. At last, it call DhcpIterateOptions
with DhcpFillOption to fill each option's data to its position in the
@ -743,7 +745,7 @@ ON_EXIT:
**/
UINT8 *
DhcpAppendOption (
IN UINT8 *Buf,
OUT UINT8 *Buf,
IN UINT8 Tag,
IN UINT16 DataLen,
IN UINT8 *Data
@ -781,6 +783,7 @@ DhcpAppendOption (
function.
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory
@retval EFI_INVALID_PARAMETER The options in SeekPacket are mal-formated
@retval EFI_SUCCESS The packet is build.
**/

46
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.h
View File

@ -24,9 +24,9 @@ Abstract:
#ifndef __EFI_DHCP4_OPTION_H__
#define __EFI_DHCP4_OPTION_H__
//
// DHCP option tags (types)
//
///
/// DHCP option tags (types)
///
typedef enum {
//
// RFC1497 vendor extensions
@ -158,19 +158,19 @@ typedef enum {
DHCP_OVERLOAD_BOTH = 3
} DHCP_OVERLOAD_TYPE;
//
// The DHCP option structure. This structure extends the EFI_DHCP_OPTION
// structure to support options longer than 255 bytes, such as classless route.
//
///
/// The DHCP option structure. This structure extends the EFI_DHCP_OPTION
/// structure to support options longer than 255 bytes, such as classless route.
///
typedef struct {
UINT8 Tag;
UINT16 Len;
UINT8 *Data;
} DHCP_OPTION;
//
// Structures used to parse the DHCP options with RFC3396 support.
//
///
/// Structures used to parse the DHCP options with RFC3396 support.
///
typedef struct {
UINT8 Index;
UINT16 Offset;
@ -182,11 +182,11 @@ typedef struct {
UINT8 *Buf;
} DHCP_OPTION_CONTEXT;
//
// The options that matters to DHCP driver itself. The user of
// DHCP clients may be interested in other options, such as
// classless route, who can parse the DHCP offer to get them.
//
///
/// The options that matters to DHCP driver itself. The user of
/// DHCP clients may be interested in other options, such as
/// classless route, who can parse the DHCP offer to get them.
///
typedef struct {
IP4_ADDR NetMask; // DHCP_TAG_NETMASK
IP4_ADDR Router; // DHCP_TAG_ROUTER, only the first router is used
@ -202,14 +202,14 @@ typedef struct {
UINT32 T2; // DHCP_TAG_T2
} DHCP_PARAMETER;
//
// Structure used to describe and validate the format of DHCP options.
// Type is the options' data type, such as DHCP_OPTION_INT8. MinOccur
// is the minium occurance of this data type. MaxOccur is defined
// similarly. If MaxOccur is -1, it means that there is no limit on the
// maximum occurance. Alert tells whether DHCP client should further
// inspect the option to parse DHCP_PARAMETER.
//
///
/// Structure used to describe and validate the format of DHCP options.
/// Type is the options' data type, such as DHCP_OPTION_INT8. MinOccur
/// is the minium occurance of this data type. MaxOccur is defined
/// similarly. If MaxOccur is -1, it means that there is no limit on the
/// maximum occurance. Alert tells whether DHCP client should further
/// inspect the option to parse DHCP_PARAMETER.
///
typedef struct {
UINT8 Tag;
INTN Type;