diff options
| author | jgong5 <jgong5@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-11-18 09:29:44 +0000 |
|---|---|---|
| committer | jgong5 <jgong5@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-11-18 09:29:44 +0000 |
| commit | 2ff2921247ab4cf5eaa6a0b0358a531e6bfacbcb (patch) | |
| tree | 002aedad428646a70122252e810c86b42a54f779 /MdeModulePkg/Universal/Network/Ip4Dxe | |
| parent | d9ef3b7dc43a48bf563689ed9fc107c19928048f (diff) | |
| download | edk2-platforms-2ff2921247ab4cf5eaa6a0b0358a531e6bfacbcb.tar.xz | |
synced function header
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6595 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Universal/Network/Ip4Dxe')
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.h | 134 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c | 13 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.h | 109 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.h | 21 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c | 113 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.h | 114 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Igmp.h | 133 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c | 5 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h | 98 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.h | 95 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Option.h | 41 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h | 68 | ||||
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Route.h | 108 |
13 files changed, 954 insertions, 98 deletions
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.h index 9142e1df42..553714e89b 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Common.h @@ -86,38 +86,111 @@ typedef enum { ///
#define IP4_US_TO_SEC(Us) (((Us) + 999999) / 1000000)
+/**
+ Return the cast type (Unicast/Boradcast) specific to an
+ interface. All the addresses are host byte ordered.
+
+ @param IpAddr The IP address to classify in host byte order
+ @param IpIf The interface that IpAddr received from
+
+ @return The cast type of this IP address specific to the interface.
+ @retval IP4_LOCAL_HOST The IpAddr equals to the interface's address
+ @retval IP4_SUBNET_BROADCAST The IpAddr is a directed subnet boradcast to the
+ interface
+ @retval IP4_NET_BROADCAST The IpAddr is a network broadcast to the interface
+ @retval 0 Otherwise.
+
+**/
INTN
Ip4GetNetCast (
- IN IP4_ADDR IpAddr,
- IN IP4_INTERFACE *IpIf
+ IN IP4_ADDR IpAddr,
+ IN IP4_INTERFACE *IpIf
);
+/**
+ Find the cast type of the packet related to the local host.
+ This isn't the same as link layer cast type. For example, DHCP
+ server may send local broadcast to the local unicast MAC.
+
+ @param IpSb The IP4 service binding instance that received the
+ packet
+ @param Dst The destination address in the packet (host byte
+ order)
+ @param Src The source address in the packet (host byte order)
+
+ @return The cast type for the Dst, it will return on the first non-promiscuous
+ cast type to a configured interface. If the packet doesn't match any of
+ the interface, multicast address and local broadcast address are checked.
+
+**/
INTN
Ip4GetHostCast (
- IN IP4_SERVICE *IpSb,
- IN IP4_ADDR Dst,
- IN IP4_ADDR Src
+ IN IP4_SERVICE *IpSb,
+ IN IP4_ADDR Dst,
+ IN IP4_ADDR Src
);
+/**
+ Find an interface whose configured IP address is Ip.
+
+ @param IpSb The IP4 service binding instance
+ @param Ip The Ip address (host byte order) to find
+
+ @return The IP4_INTERFACE point if found, otherwise NULL
+
+**/
IP4_INTERFACE *
Ip4FindInterface (
- IN IP4_SERVICE *IpService,
- IN IP4_ADDR Addr
+ IN IP4_SERVICE *IpSb,
+ IN IP4_ADDR Ip
);
+/**
+ Find an interface that Ip is on that connected network.
+
+ @param IpSb The IP4 service binding instance
+ @param Ip The Ip address (host byte order) to find
+
+ @return The IP4_INTERFACE point if found, otherwise NULL
+
+**/
IP4_INTERFACE *
Ip4FindNet (
- IN IP4_SERVICE *IpService,
- IN IP4_ADDR Addr
+ IN IP4_SERVICE *IpSb,
+ IN IP4_ADDR Ip
);
+/**
+ Find an interface of the service with the same Ip/Netmask pair.
+
+ @param IpSb Ip4 service binding instance
+ @param Ip The Ip adress to find (host byte order)
+ @param Netmask The network to find (host byte order)
+
+ @return The IP4_INTERFACE point if found, otherwise NULL
+
+**/
IP4_INTERFACE *
Ip4FindStationAddress (
- IN IP4_SERVICE *IpSb,
- IN IP4_ADDR Ip,
- IN IP4_ADDR Netmask
+ IN IP4_SERVICE *IpSb,
+ IN IP4_ADDR Ip,
+ IN IP4_ADDR Netmask
);
+/**
+ Get the MAC address for a multicast IP address. Call
+ Mnp's McastIpToMac to find the MAC address in stead of
+ hard code the NIC to be Ethernet.
+
+ @param Mnp The Mnp instance to get the MAC address.
+ @param Multicast The multicast IP address to translate.
+ @param Mac The buffer to hold the translated address.
+
+ @retval EFI_SUCCESS if the multicast IP is successfully translated to a
+ multicast MAC address.
+ @retval other Otherwise some error.
+
+**/
EFI_STATUS
Ip4GetMulticastMac (
IN EFI_MANAGED_NETWORK_PROTOCOL *Mnp,
@@ -125,19 +198,50 @@ Ip4GetMulticastMac ( OUT EFI_MAC_ADDRESS *Mac
);
+/**
+ Convert the multibyte field in IP header's byter order.
+ In spite of its name, it can also be used to convert from
+ host to network byte order.
+
+ @param Head The IP head to convert
+
+ @return Point to the converted IP head
+
+**/
IP4_HEAD *
Ip4NtohHead (
- IN IP4_HEAD *Head
+ IN IP4_HEAD *Head
);
+/**
+ Set the Ip4 variable data.
+
+ Save the list of all of the IPv4 addresses and subnet masks that are currently
+ being used to volatile variable storage.
+
+ @param IpSb Ip4 service binding instance
+
+ @retval EFI_SUCCESS Successfully set variable.
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources to set the variable.
+ @retval other Set variable failed.
+
+**/
EFI_STATUS
Ip4SetVariableData (
- IN IP4_SERVICE *IpSb
+ IN IP4_SERVICE *IpSb
);
+/**
+ Clear the variable and free the resource.
+
+ @param IpSb Ip4 service binding instance
+
+ @return None.
+
+**/
VOID
Ip4ClearVariableData (
- IN IP4_SERVICE *IpSb
+ IN IP4_SERVICE *IpSb
);
#endif
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c index f36394a009..a43145e162 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.c @@ -122,6 +122,19 @@ Ip4DriverBindingSupported ( return Status;
}
+/**
+ Clean up a IP4 service binding instance. It will release all
+ the resource allocated by the instance. The instance may be
+ partly initialized, or partly destroyed. If a resource is
+ destroyed, it is marked as that in case the destory failed and
+ being called again later.
+
+ @param IpSb The IP4 serviceing binding instance to clean up
+
+ @retval EFI_SUCCESS The resource used by the instance are cleaned up
+ @retval other Failed to clean up some of the resources.
+
+**/
EFI_STATUS
Ip4CleanService (
IN IP4_SERVICE *IpSb
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.h index 6ff56f0e94..4d5cbe68f6 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Driver.h @@ -31,6 +31,21 @@ extern EFI_COMPONENT_NAME2_PROTOCOL gIp4ComponentName2; //
// Function prototype for the driver's entry point
//
+/**
+ 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.
+
+ The entry point for IP4 driver which install the driver
+ binding and component name protocol on its image.
+
+ @param ImageHandle The firmware allocated handle for the UEFI image.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @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
EFIAPI
Ip4DriverEntryPoint (
@@ -41,22 +56,76 @@ Ip4DriverEntryPoint ( //
// Function prototypes for the Drivr Binding Protocol
//
+/**
+ 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_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
+
+**/
EFI_STATUS
EFIAPI
Ip4DriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
+ IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
);
+/**
+ 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_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
+
+**/
EFI_STATUS
EFIAPI
Ip4DriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
+ IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
);
+/**
+ 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 ChildHandleBuffer List of Child Handles to Stop.
+
+ @retval EFI_SUCCESS This driver is removed ControllerHandle
+ @retval other This driver was not removed from this device
+
+**/
EFI_STATUS
EFIAPI
Ip4DriverBindingStop (
@@ -69,13 +138,43 @@ Ip4DriverBindingStop ( //
// Function ptototypes for the ServiceBinding Prococol
//
+/**
+ 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
+ I/O services are added to the existing child handle.
+
+ @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
+
+**/
EFI_STATUS
EFIAPI
Ip4ServiceBindingCreateChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
- IN EFI_HANDLE *ChildHandle
+ IN OUT EFI_HANDLE *ChildHandle
);
+/**
+ 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 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
+ I/O services are being used.
+ @retval other The child handle was not destroyed
+
+**/
EFI_STATUS
EFIAPI
Ip4ServiceBindingDestroyChild (
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.h index 0246f9c042..5b7b1a67b3 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.h @@ -90,10 +90,25 @@ typedef struct { extern IP4_ICMP_CLASS mIcmpClass[];
extern EFI_IP4_ICMP_TYPE mIp4SupportedIcmp[];
+/**
+ Handle the ICMP packet. First validate the message format,
+ then according to the message types, process it as query or
+ error packet.
+
+ @param IpSb The IP service that receivd the packet
+ @param Head The IP head of the ICMP query packet
+ @param Packet The content of the ICMP query with IP head
+ removed.
+
+ @retval EFI_INVALID_PARAMETER The packet is malformated.
+ @retval EFI_SUCCESS The ICMP message is successfully processed.
+ @retval Others Failed to handle ICMP packet.
+
+**/
EFI_STATUS
Ip4IcmpHandle (
- IN IP4_SERVICE *IpSb,
- IN IP4_HEAD *Header,
- IN NET_BUF *Packet
+ IN IP4_SERVICE *IpSb,
+ IN IP4_HEAD *Head,
+ IN NET_BUF *Packet
);
#endif
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c index dfd58406c2..1a47fa9478 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c @@ -29,25 +29,64 @@ Abstract: //
EFI_MAC_ADDRESS mZeroMacAddress;
+/**
+ Callback funtion when frame transmission is finished. It will
+ call the frame owner's callback function to tell it the result.
+
+ @param Context Context which is point to the token.
+
+ @return None.
+
+**/
VOID
EFIAPI
Ip4OnFrameSentDpc (
- IN VOID *Context
+ IN VOID *Context
);
+/**
+ Request Ip4OnFrameSentDpc as a DPC at TPL_CALLBACK.
+
+ @param Event The transmit token's event.
+ @param Context Context which is point to the token.
+
+ @return None
+
+**/
VOID
EFIAPI
Ip4OnFrameSent (
- IN EFI_EVENT Event,
- IN VOID *Context
+ IN EFI_EVENT Event,
+ IN VOID *Context
);
+/**
+ Callback function when ARP request are finished. It will cancelled
+ all the queued frame if the ARP requests failed. Or transmit them
+ if the request succeed.
+
+ @param Context The context of the callback, a point to the ARP
+ queue
+
+ @return None
+
+**/
VOID
EFIAPI
Ip4OnArpResolvedDpc (
IN VOID *Context
);
+/**
+ Request Ip4OnArpResolvedDpc as a DPC at TPL_CALLBACK.
+
+ @param Event The Arp request event.
+ @param Context The context of the callback, a point to the ARP
+ queue.
+
+ @return None
+
+**/
VOID
EFIAPI
Ip4OnArpResolved (
@@ -55,19 +94,55 @@ Ip4OnArpResolved ( IN VOID *Context
);
+/**
+ Received a frame from MNP, wrap it in net buffer then deliver
+ it to IP's input function. The ownship of the packet also
+ transferred to IP. When Ip is finished with this packet, it
+ will call NetbufFree to release the packet, NetbufFree will
+ again call the Ip4RecycleFrame to signal MNP's event and free
+ the token used.
+
+ @param Context Context for the callback.
+
+ @return None.
+
+**/
VOID
EFIAPI
Ip4OnFrameReceivedDpc (
- IN VOID *Context
+ IN VOID *Context
);
+/**
+
+ Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK.
+
+ @param Event The receive event delivered to MNP for receive.
+ @param Context Context for the callback.
+
+ @return None.
+
+**/
VOID
EFIAPI
Ip4OnFrameReceived (
- IN EFI_EVENT Event,
- IN VOID *Context
+ IN EFI_EVENT Event,
+ IN VOID *Context
);
+/**
+ Remove all the frames on the ARP queue that pass the FrameToCancel,
+ that is, either FrameToCancel is NULL or it returns true for the frame.
+
+ @param ArpQue ARP frame to remove the frames from.
+ @param IoStatus The status returned to the cancelled frames'
+ callback function.
+ @param FrameToCancel Function to select which frame to cancel.
+ @param Context Opaque parameter to the FrameToCancel.
+
+ @return NONE
+
+**/
VOID
Ip4CancelFrameArp (
IN IP4_ARP_QUE *ArpQue,
@@ -1142,28 +1217,22 @@ Ip4OnFrameReceivedDpc ( Token->CallBack (Token->IpInstance, Packet, EFI_SUCCESS, Flag, Token->Context);
}
+/**
+
+ Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK.
+
+ @param Event The receive event delivered to MNP for receive.
+ @param Context Context for the callback.
+
+ @return None.
+
+**/
VOID
EFIAPI
Ip4OnFrameReceived (
IN EFI_EVENT Event,
IN VOID *Context
)
-/*++
-
-Routine Description:
-
- Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK
-
-Arguments:
-
- Event - The receive event delivered to MNP for receive.
- Context - Context for the callback.
-
-Returns:
-
- None.
-
---*/
{
//
// Request Ip4OnFrameReceivedDpc as a DPC at TPL_CALLBACK
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.h index d02e7d1d6e..8c06cfc55b 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.h @@ -198,6 +198,19 @@ struct _IP4_INTERFACE { BOOLEAN PromiscRecv;
};
+/**
+ Create an IP4_INTERFACE. Delay the creation of ARP instance until
+ the interface is configured.
+
+ @param Mnp The shared MNP child of this IP4 service binding
+ instance
+ @param Controller The controller this IP4 service binding instance
+ is installed. Most like the UNDI handle.
+ @param ImageHandle This driver's image handle
+
+ @return Point to the created IP4_INTERFACE, otherwise NULL.
+
+**/
IP4_INTERFACE *
Ip4CreateInterface (
IN EFI_MANAGED_NETWORK_PROTOCOL *Mnp,
@@ -205,19 +218,68 @@ Ip4CreateInterface ( IN EFI_HANDLE ImageHandle
);
+/**
+ Set the interface's address, create and configure
+ the ARP child if necessary.
+
+ @param Interface The interface to set the address
+ @param IpAddr The interface's IP address
+ @param SubnetMask The interface's netmask
+
+ @retval EFI_SUCCESS The interface is configured with Ip/netmask pair,
+ and a ARP is created for it.
+ @retval Others Failed to set the interface's address.
+
+**/
EFI_STATUS
Ip4SetAddress (
- IN IP4_INTERFACE *Interface,
- IN IP4_ADDR IpAddr,
- IN IP4_ADDR SubnetMask
+ IN OUT IP4_INTERFACE *Interface,
+ IN IP4_ADDR IpAddr,
+ IN IP4_ADDR SubnetMask
);
+/**
+ Free the interface used by IpInstance. All the IP instance with
+ the same Ip/Netmask pair share the same interface. It is reference
+ counted. All the frames haven't been sent will be cancelled.
+ Because the IpInstance is optional, the caller must remove
+ IpInstance from the interface's instance list itself.
+
+ @param Interface The interface used by the IpInstance
+ @param IpInstance The Ip instance that free the interface. NULL if
+ the Ip driver is releasing the default interface.
+
+ @retval EFI_SUCCESS The interface use IpInstance is freed.
+
+**/
EFI_STATUS
Ip4FreeInterface (
IN IP4_INTERFACE *Interface,
- IN IP4_PROTOCOL *IpInstance OPTIONAL
+ IN IP4_PROTOCOL *IpInstance OPTIONAL
);
+/**
+ Send a frame from the interface. If the next hop is broadcast or
+ multicast address, it is transmitted immediately. If the next hop
+ is a unicast, it will consult ARP to resolve the NextHop's MAC.
+ If some error happened, the CallBack won't be called. So, the caller
+ must test the return value, and take action when there is an error.
+
+ @param Interface The interface to send the frame from
+ @param IpInstance The IP child that request the transmission. NULL
+ if it is the IP4 driver itself.
+ @param Packet The packet to transmit.
+ @param NextHop The immediate destination to transmit the packet
+ to.
+ @param CallBack Function to call back when transmit finished.
+ @param Context Opaque parameter to the call back.
+
+ @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 is successfully transmitted.
+ @retval other Other error occurs.
+
+**/
EFI_STATUS
Ip4SendFrame (
IN IP4_INTERFACE *Interface,
@@ -228,6 +290,21 @@ Ip4SendFrame ( IN VOID *Context
);
+/**
+ Remove all the frames on the interface that pass the FrameToCancel,
+ either queued on ARP queues or that have already been delivered to
+ MNP and not yet recycled.
+
+ @param Interface Interface to remove the frames from
+ @param IoStatus The transmit status returned to the frames'
+ callback
+ @param FrameToCancel Function to select the frame to cancel, NULL to
+ select all
+ @param Context Opaque parameters passed to FrameToCancel
+
+ @return NONE
+
+**/
VOID
Ip4CancelFrames (
IN IP4_INTERFACE *Interface,
@@ -236,11 +313,40 @@ Ip4CancelFrames ( IN VOID *Context
);
+/**
+ If there is a pending receive request, cancel it. Don't call
+ the receive request's callback because this function can be only
+ called if the instance or driver is tearing itself down. It
+ doesn't make sense to call it back. But it is necessary to call
+ the transmit token's callback to give it a chance to free the
+ packet and update the upper layer's transmit request status, say
+ that from the UDP.
+
+ @param Interface The interface used by the IpInstance
+
+ @return None
+
+**/
VOID
Ip4CancelReceive (
IN IP4_INTERFACE *Interface
);
+/**
+ Request to receive the packet from the interface.
+
+ @param Interface The interface to receive the frames from
+ @param IpInstance The instance that requests the receive. NULL for
+ the driver itself.
+ @param CallBack Function to call when receive finished.
+ @param Context Opaque parameter to the callback
+
+ @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 recieve request has been started.
+ @retval other Other error occurs.
+
+**/
EFI_STATUS
Ip4ReceiveFrame (
IN IP4_INTERFACE *Interface,
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Igmp.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Igmp.h index 6c48d6aca8..7dd75740e7 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Igmp.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Igmp.h @@ -69,52 +69,151 @@ typedef enum { IGMP_UNSOLICIATED_REPORT = 10
} IGMP_ENUM_TYPES;
+/**
+ Init the IGMP control data of the IP4 service instance, configure
+ MNP to receive ALL SYSTEM multicast.
+
+ @param IpSb The IP4 service whose IGMP is to be initialized.
+
+ @retval EFI_SUCCESS IGMP of the IpSb is successfully initialized.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resource to initialize IGMP.
+ @retval Others Failed to initialize the IGMP of IpSb.
+
+**/
EFI_STATUS
Ip4InitIgmp (
- IN IP4_SERVICE *IpService
+ IN OUT IP4_SERVICE *IpSb
);
+/**
+ Join the multicast group on behalf of this IP4 child
+
+ @param IpInstance The IP4 child that wants to join the group
+ @param Address The group to join
+
+ @retval EFI_SUCCESS Successfully join the multicast group
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resources
+ @retval Others Failed to join the multicast group.
+
+**/
EFI_STATUS
Ip4JoinGroup (
- IN IP4_PROTOCOL *IpInstance,
- IN IP4_ADDR Address
+ IN IP4_PROTOCOL *IpInstance,
+ IN IP4_ADDR Address
);
+/**
+ Leave the IP4 multicast group on behalf of IpInstance.
+
+ @param IpInstance The IP4 child that wants to leave the group
+ address
+ @param Address The group address to leave
+
+ @retval EFI_NOT_FOUND The IP4 service instance isn't in the group
+ @retval EFI_SUCCESS Successfully leave the multicast group.
+ @retval Others Failed to leave the multicast group.
+
+**/
EFI_STATUS
Ip4LeaveGroup (
- IN IP4_PROTOCOL *IpInstance,
- IN IP4_ADDR Address
+ IN IP4_PROTOCOL *IpInstance,
+ IN IP4_ADDR Address
);
+/**
+ Handle the received IGMP message for the IP4 service instance.
+
+ @param IpSb The IP4 service instance that received the message
+ @param Head The IP4 header of the received message
+ @param Packet The IGMP message, without IP4 header
+
+ @retval EFI_INVALID_PARAMETER The IGMP message is malformated.
+ @retval EFI_SUCCESS The IGMP message is successfully processed.
+
+**/
EFI_STATUS
Ip4IgmpHandle (
- IN IP4_SERVICE *IpService,
- IN IP4_HEAD *Head,
- IN NET_BUF *Packet
+ IN IP4_SERVICE *IpSb,
+ IN IP4_HEAD *Head,
+ IN NET_BUF *Packet
);
+/**
+ The periodical timer function for IGMP. It does the following
+ things:
+ 1. Decrease the Igmpv1QuerySeen to make it possible to refresh
+ the IGMP server type.
+ 2. Decrease the report timer for each IGMP group in "delaying
+ member" state.
+
+ @param IpSb The IP4 service instance that is ticking
+
+ @return None
+
+**/
VOID
Ip4IgmpTicking (
- IN IP4_SERVICE *IpService
+ IN IP4_SERVICE *IpSb
);
+/**
+ Add a group address to the array of group addresses.
+ The caller should make sure that no duplicated address
+ existed in the array. Although the function doesn't
+ assume the byte order of the both Source and Addr, the
+ network byte order is used by the caller.
+
+ @param Source The array of group addresses to add to
+ @param Count The number of group addresses in the Source
+ @param Addr The IP4 multicast address to add
+
+ @return NULL if failed to allocate memory for the new groups,
+ otherwise the new combined group addresses.
+
+**/
IP4_ADDR *
Ip4CombineGroups (
- IN IP4_ADDR *SourceGroups,
- IN UINT32 Count,
- IN IP4_ADDR Addr
+ IN IP4_ADDR *Source,
+ IN UINT32 Count,
+ IN IP4_ADDR Addr
);
+/**
+ Remove a group address from the array of group addresses.
+ Although the function doesn't assume the byte order of the
+ both Groups and Addr, the network byte order is used by
+ the caller.
+
+ @param Groups The array of group addresses to remove from
+ @param Count The number of group addresses in the Groups
+ @param Addr The IP4 multicast address to remove
+
+ @return The nubmer of group addresses in the Groups after remove.
+ It is Count if the Addr isn't in the Groups.
+
+**/
INTN
Ip4RemoveGroupAddr (
- IN IP4_ADDR *Group,
- IN UINT32 GroupCnt,
- IN IP4_ADDR Addr
+ IN OUT IP4_ADDR *Groups,
+ IN UINT32 Count,
+ IN IP4_ADDR Addr
);
+/**
+ Find the IGMP_GROUP structure which contains the status of multicast
+ group Address in this IGMP control block
+
+ @param IgmpCtrl The IGMP control block to search from
+ @param Address The multicast address to search
+
+ @return NULL if the multicast address isn't in the IGMP control block. Otherwise
+ the point to the IGMP_GROUP which contains the status of multicast group
+ for Address.
+
+**/
IGMP_GROUP *
Ip4FindGroup (
- IN IGMP_SERVICE_DATA *IgmpCtrl,
- IN IP4_ADDR Address
+ IN IGMP_SERVICE_DATA *IgmpCtrl,
+ IN IP4_ADDR Address
);
#endif
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c index 2026bcc7d4..8017932e7f 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c @@ -691,7 +691,8 @@ ON_EXIT: gBS->FreePool (Data);
}
-/*++
+/**
+
Request Ip4AutoConfigCallBackDpc as a DPC at TPL_CALLBACK.
@param Event The event that is signalled.
@@ -699,7 +700,7 @@ ON_EXIT: @return None.
-++*/
+**/
VOID
EFIAPI
Ip4AutoConfigCallBack (
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h index 3f19167631..08ca3708dd 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h @@ -216,36 +216,112 @@ struct _IP4_SERVICE { extern EFI_IP4_PROTOCOL mEfiIp4ProtocolTemplete;
+/**
+ Config the MNP parameter used by IP. The IP driver use one MNP
+ child to transmit/receive frames. By default, it configures MNP
+ to receive unicast/multicast/broadcast. And it will enable/disable
+ the promiscous receive according to whether there is IP child
+ enable that or not. If Force is FALSE, it will iterate through
+ all the IP children to check whether the promiscuous receive
+ setting has been changed. If it hasn't been changed, it won't
+ reconfigure the MNP. If Force is TRUE, the MNP is configured no
+ matter whether that is changed or not.
+
+ @param IpSb The IP4 service instance that is to be changed.
+ @param Force Force the configuration or not.
+
+ @retval EFI_SUCCESS The MNP is successfully configured/reconfigured.
+ @retval Others Configuration failed.
+
+**/
EFI_STATUS
Ip4ServiceConfigMnp (
IN IP4_SERVICE *IpSb,
IN BOOLEAN Force
);
+/**
+ Intiialize the IP4_PROTOCOL structure to the unconfigured states.
+
+ @param IpSb The IP4 service instance.
+ @param IpInstance The IP4 child instance.
+
+ @return None
+
+**/
VOID
Ip4InitProtocol (
- IN IP4_SERVICE *IpSb,
- IN IP4_PROTOCOL *IpInstance
+ IN IP4_SERVICE *IpSb,
+ IN OUT IP4_PROTOCOL *IpInstance
);
+/**
+ Clean up the IP4 child, release all the resources used by it.
+
+ @param IpInstance The IP4 child to clean up.
+
+ @retval EFI_SUCCESS The IP4 child is cleaned up
+ @retval EFI_DEVICE_ERROR Some resources failed to be released
+
+**/
EFI_STATUS
Ip4CleanProtocol (
IN IP4_PROTOCOL *IpInstance
);
+/**
+ Cancel the user's receive/transmit request.
+
+ @param IpInstance The IP4 child
+ @param Token The token to cancel. If NULL, all token will be
+ cancelled.
+
+ @retval EFI_SUCCESS The token is cancelled
+ @retval EFI_NOT_FOUND The token isn't found on either the
+ transmit/receive queue
+ @retval EFI_DEVICE_ERROR Not all token is cancelled when Token is NULL.
+
+**/
EFI_STATUS
Ip4Cancel (
IN IP4_PROTOCOL *IpInstance,
- IN EFI_IP4_COMPLETION_TOKEN *Token
+ IN EFI_IP4_COMPLETION_TOKEN *Token OPTIONAL
);
+/**
+ Change the IP4 child's multicast setting. The caller
+ should make sure that the parameters is valid.
+
+ @param IpInstance The IP4 child to change the setting.
+ @param JoinFlag TRUE to join the group, otherwise leave it
+ @param GroupAddress The target group address
+
+ @retval EFI_ALREADY_STARTED Want to join the group, but already a member of it
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate some resources.
+ @retval EFI_DEVICE_ERROR Failed to set the group configuraton
+ @retval EFI_SUCCESS Successfully updated the group setting.
+ @retval EFI_NOT_FOUND Try to leave the group which it isn't a member.
+
+**/
EFI_STATUS
Ip4Groups (
IN IP4_PROTOCOL *IpInstance,
IN BOOLEAN JoinFlag,
- IN EFI_IPv4_ADDRESS *GroupAddress
+ IN EFI_IPv4_ADDRESS *GroupAddress OPTIONAL
);
+/**
+ The heart beat timer of IP4 service instance. It times out
+ all of its IP4 children's received-but-not-delivered and
+ transmitted-but-not-recycle packets, and provides time input
+ for its IGMP protocol.
+
+ @param Event The IP4 service instance's heart beat timer.
+ @param Context The IP4 service instance.
+
+ @return None
+
+**/
VOID
EFIAPI
Ip4TimerTicking (
@@ -253,6 +329,20 @@ Ip4TimerTicking ( IN VOID *Context
);
+/**
+ Decrease the life of the transmitted packets. If it is
+ decreased to zero, cancel the packet. This function is
+ called by Ip4PacketTimerTicking which time out both the
+ received-but-not-delivered and transmitted-but-not-recycle
+ packets.
+
+ @param Map The IP4 child's transmit map.
+ @param Item Current transmitted packet
+ @param Context Not used.
+
+ @retval EFI_SUCCESS Always returns EFI_SUCCESS
+
+**/
EFI_STATUS
Ip4SentPacketTicking (
IN NET_MAP *Map,
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.h index fcbfb01699..43833af8c4 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Input.h @@ -91,16 +91,49 @@ typedef struct { #define IP4_RXDATA_WRAP_SIZE(NumFrag) \
(sizeof (IP4_RXDATA_WRAP) + sizeof (EFI_IP4_FRAGMENT_DATA) * ((NumFrag) - 1))
+/**
+ Initialize an already allocated assemble table. This is generally
+ the assemble table embedded in the IP4 service instance.
+
+ @param Table The assemble table to initialize.
+
+ @return NONE
+
+**/
VOID
Ip4InitAssembleTable (
- IN IP4_ASSEMBLE_TABLE *Table
+ IN OUT IP4_ASSEMBLE_TABLE *Table
);
+/**
+ Clean up the assemble table: remove all the fragments
+ and assemble entries.
+
+ @param Table The assemble table to clean up
+
+ @return None
+
+**/
VOID
Ip4CleanAssembleTable (
IN IP4_ASSEMBLE_TABLE *Table
);
+/**
+ The IP4 input routine. It is called by the IP4_INTERFACE when a
+ IP4 fragment is received from MNP.
+
+ @param Ip4Instance The IP4 child that request the receive, most like
+ it is NULL.
+ @param Packet The IP4 packet received.
+ @param IoStatus The return status of receive request.
+ @param Flag The link layer flag for the packet received, such
+ as multicast.
+ @param Context The IP4 service instance that own the MNP.
+
+ @return None
+
+**/
VOID
Ip4AccpetFrame (
IN IP4_PROTOCOL *Ip4Instance,
@@ -110,26 +143,78 @@ Ip4AccpetFrame ( IN VOID *Context
);
+/**
+ Demultiple the packet. the packet delivery is processed in two
+ passes. The first pass will enque a shared copy of the packet
+ to each IP4 child that accepts the packet. The second pass will
+ deliver a non-shared copy of the packet to each IP4 child that
+ has pending receive requests. Data is copied if more than one
+ child wants to consume the packet because each IP child needs
+ its own copy of the packet to make changes.
+
+ @param IpSb The IP4 service instance that received the packet
+ @param Head The header of the received packet
+ @param Packet The data of the received packet
+
+ @retval EFI_NOT_FOUND No IP child accepts the packet
+ @retval EFI_SUCCESS The packet is enqueued or delivered to some IP
+ children.
+
+**/
EFI_STATUS
Ip4Demultiplex (
- IN IP4_SERVICE *SbInstance,
+ IN IP4_SERVICE *IpSb,
IN IP4_HEAD *Head,
IN NET_BUF *Packet
);
+/**
+ Enqueue a received packet to all the IP children that share
+ the same interface.
+
+ @param IpSb The IP4 service instance that receive the packet
+ @param Head The header of the received packet
+ @param Packet The data of the received packet
+ @param IpIf The interface to enqueue the packet to
+
+ @return The number of the IP4 children that accepts the packet
+
+**/
INTN
Ip4InterfaceEnquePacket (
- IN IP4_SERVICE *SbInstance,
+ IN IP4_SERVICE *IpSb,
IN IP4_HEAD *Head,
IN NET_BUF *Packet,
- IN IP4_INTERFACE *Interface
+ IN IP4_INTERFACE *IpIf
);
+/**
+ Deliver the received packets to upper layer if there are both received
+ requests and enqueued packets. If the enqueued packet is shared, it will
+ duplicate it to a non-shared packet, release the shared packet, then
+ deliver the non-shared packet up.
+
+ @param IpInstance The IP child to deliver the packet up.
+
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate resources to deliver the
+ packets.
+ @retval EFI_SUCCESS All the enqueued packets that can be delivered
+ are delivered up.
+
+**/
EFI_STATUS
Ip4InstanceDeliverPacket (
- IN IP4_PROTOCOL *Ip4Instance
+ IN IP4_PROTOCOL *IpInstance
);
+/**
+ Timeout the fragment and enqueued packets.
+
+ @param IpSb The IP4 service instance to timeout
+
+ @return None
+
+**/
VOID
Ip4PacketTimerTicking (
IN IP4_SERVICE *IpSb
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Option.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Option.h index fa173fb086..546bf8ca6d 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Option.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Option.h @@ -34,19 +34,50 @@ typedef enum { IP4_OPTION_COPY_MASK = 0x80
} IP4_OPTION_ENUM_TYPES;
+/**
+ Validate the IP4 option format for both the packets we received
+ and will transmit. It will compute the ICMP error message fields
+ if the option is mal-formated. But this information isn't used.
+
+ @param Option The first byte of the option
+ @param OptionLen The length of the whole option
+ @param Rcvd The option is from the packet we received if TRUE,
+ otherwise the option we wants to transmit.
+
+ @retval TRUE The option is properly formatted
+ @retval FALSE The option is mal-formated
+
+**/
BOOLEAN
Ip4OptionIsValid (
IN UINT8 *Option,
- IN UINT32 OptLen,
+ IN UINT32 OptionLen,
IN BOOLEAN Rcvd
);
+/**
+ Copy the option from the original option to buffer. It
+ handles the details such as:
+ 1. whether copy the single IP4 option to the first/non-first
+ fragments.
+ 2. Pad the options copied over to aligned to 4 bytes.
+
+ @param Option The original option to copy from
+ @param OptionLen The length of the original option
+ @param FirstFragment Whether it is the first fragment
+ @param Buf The buffer to copy options to. NULL
+ @param BufLen The length of the buffer
+
+ @retval EFI_SUCCESS The options are copied over
+ @retval EFI_BUFFER_TOO_SMALL Buf is NULL or BufLen provided is too small.
+
+**/
EFI_STATUS
Ip4CopyOption (
- IN UINT8 *Option,
- IN UINT32 OptLen,
- IN BOOLEAN Fragment,
- IN UINT8 *Buf, OPTIONAL
+ IN UINT8 *Option,
+ IN UINT32 OptionLen,
+ IN BOOLEAN FirstFragment,
+ IN OUT UINT8 *Buf, OPTIONAL
IN OUT UINT32 *BufLen
);
#endif
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h index 991f10cbc0..8e64446461 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h @@ -21,20 +21,66 @@ Abstract: #ifndef __EFI_IP4_OUTPUT_H__
#define __EFI_IP4_OUTPUT_H__
+/**
+ The default callback function for system generated packet.
+ It will free the packet.
+
+ @param Ip4Instance The IP4 child that issued the transmission. It most
+ like is NULL.
+ @param Packet The packet that transmitted.
+ @param IoStatus The result of the transmission, succeeded or failed.
+ @param LinkFlag Not used when transmission. check IP4_FRAME_CALLBACK
+ for reference.
+ @param Context The context provided by us
+
+ @return None
+
+**/
VOID
Ip4SysPacketSent (
IP4_PROTOCOL *Ip4Instance,
NET_BUF *Packet,
EFI_STATUS IoStatus,
- UINT32 Flag,
+ UINT32 LinkFlag,
VOID *Context
);
+/**
+ Transmit an IP4 packet. The packet comes either from the IP4
+ child's consumer (IpInstance != NULL) or the IP4 driver itself
+ (IpInstance == NULL). It will route the packet, fragment it,
+ then transmit all the fragments through some interface.
+
+ @param IpSb The IP4 service instance to transmit the packet
+ @param IpInstance The IP4 child that issues the transmission. It is
+ NULL if the packet is from the system.
+ @param Packet The user data to send, excluding the IP header.
+ @param Head The caller supplied header. The caller should set
+ the following header fields: Tos, TotalLen, Id, tl,
+ Fragment, Protocol, Src and Dst. All the fields are
+ in host byte order. This function will fill in the
+ Ver, HeadLen, Fragment, and checksum. The Fragment
+ only need to include the DF flag. Ip4Output will
+ compute the MF and offset for you.
+ @param Option The original option to append to the IP headers
+ @param OptLen The length of the option
+ @param GateWay The next hop address to transmit packet to.
+ 255.255.255.255 means broadcast.
+ @param Callback The callback function to issue when transmission
+ completed.
+ @param Context The opaque context for the callback
+
+ @retval EFI_NO_MAPPING There is no interface to the destination.
+ @retval EFI_NOT_FOUND There is no route to the destination
+ @retval EFI_SUCCESS The packet is successfully transmitted.
+ @retval Others Failed to transmit the packet.
+
+**/
EFI_STATUS
Ip4Output (
IN IP4_SERVICE *IpSb,
- IN IP4_PROTOCOL *IpInstance, OPTIONAL
- IN NET_BUF *Data,
+ IN IP4_PROTOCOL *IpInstance, OPTIONAL
+ IN NET_BUF *Packet,
IN IP4_HEAD *Head,
IN UINT8 *Option,
IN UINT32 OptLen,
@@ -43,11 +89,21 @@ Ip4Output ( IN VOID *Context
);
+/**
+ Cancel the Packet and all its fragments.
+
+ @param IpIf The interface from which the Packet is sent
+ @param Packet The Packet to cancel
+ @param IoStatus The status returns to the sender.
+
+ @return None
+
+**/
VOID
Ip4CancelPacket (
- IN IP4_INTERFACE *IpIf,
- IN NET_BUF *Packet,
- IN EFI_STATUS IoStatus
+ IN IP4_INTERFACE *IpIf,
+ IN NET_BUF *Packet,
+ IN EFI_STATUS IoStatus
);
extern UINT16 mIp4Id;
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Route.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Route.h index bc396f94b4..5ba2b578ef 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Route.h +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Route.h @@ -99,32 +99,89 @@ struct _IP4_ROUTE_TABLE { IP4_ROUTE_CACHE Cache;
};
-IP4_ROUTE_TABLE*
+/**
+ Create an empty route table, includes its internal route cache
+
+ @return NULL if failed to allocate memory for the route table, otherwise
+ the point to newly created route table.
+
+**/
+IP4_ROUTE_TABLE *
Ip4CreateRouteTable (
VOID
);
+/**
+ Free the route table and its associated route cache. Route
+ table is reference counted.
+
+ @param RtTable The route table to free.
+
+ @return None
+
+**/
VOID
Ip4FreeRouteTable (
- IN IP4_ROUTE_TABLE *RouteTable
+ IN IP4_ROUTE_TABLE *RtTable
);
+/**
+ Add a route entry to the route table. All the IP4_ADDRs are in
+ host byte order.
+
+ @param RtTable Route table to add route to
+ @param Dest The destination of the network
+ @param Netmask The netmask of the destination
+ @param Gateway The next hop address
+
+ @retval EFI_ACCESS_DENIED The same route already exists
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the entry
+ @retval EFI_SUCCESS The route is added successfully.
+
+**/
EFI_STATUS
Ip4AddRoute (
- IN IP4_ROUTE_TABLE *RtTable,
- IN IP4_ADDR Dest,
- IN IP4_ADDR Netmask,
- IN IP4_ADDR Gateway
+ IN OUT IP4_ROUTE_TABLE *RtTable,
+ IN IP4_ADDR Dest,
+ IN IP4_ADDR Netmask,
+ IN IP4_ADDR Gateway
);
+/**
+ Remove a route entry and all the route caches spawn from it.
+
+ @param RtTable The route table to remove the route from
+ @param Dest The destination network
+ @param Netmask The netmask of the Dest
+ @param Gateway The next hop address
+
+ @retval EFI_SUCCESS The route entry is successfully removed
+ @retval EFI_NOT_FOUND There is no route entry in the table with that
+ properity.
+
+**/
EFI_STATUS
Ip4DelRoute (
- IN IP4_ROUTE_TABLE *RtTable,
- IN IP4_ADDR Dest,
- IN IP4_ADDR Netmask,
- IN IP4_ADDR Gateway
+ IN OUT IP4_ROUTE_TABLE *RtTable,
+ IN IP4_ADDR Dest,
+ IN IP4_ADDR Netmask,
+ IN IP4_ADDR Gateway
);
+/**
+ Find a route cache with the dst and src. This is used by ICMP
+ redirect messasge process. All kinds of redirect is treated as
+ host redirect according to RFC1122. So, only route cache entries
+ are modified according to the ICMP redirect message.
+
+ @param RtTable The route table to search the cache for
+ @param Dest The destination address
+ @param Src The source address
+
+ @return NULL if no route entry to the (Dest, Src). Otherwise the point
+ to the correct route cache entry.
+
+**/
IP4_ROUTE_CACHE_ENTRY *
Ip4FindRouteCache (
IN IP4_ROUTE_TABLE *RtTable,
@@ -132,11 +189,31 @@ Ip4FindRouteCache ( IN IP4_ADDR Src
);
+/**
+ Free the route cache entry. It is reference counted.
+
+ @param RtCacheEntry The route cache entry to free.
+
+ @return None
+
+**/
VOID
Ip4FreeRouteCacheEntry (
IN IP4_ROUTE_CACHE_ENTRY *RtCacheEntry
);
+/**
+ Search the route table to route the packet. Return/create a route
+ cache if there is a route to the destination.
+
+ @param RtTable The route table to search from
+ @param Dest The destination address to search for
+ @param Src The source address to search for
+
+ @return NULL if failed to route packet, otherwise a route cache
+ entry that can be used to route packet.
+
+**/
IP4_ROUTE_CACHE_ENTRY *
Ip4Route (
IN IP4_ROUTE_TABLE *RtTable,
@@ -144,6 +221,17 @@ Ip4Route ( IN IP4_ADDR Src
);
+/**
+ Build a EFI_IP4_ROUTE_TABLE to be returned to the caller of
+ GetModeData. The EFI_IP4_ROUTE_TABLE is clumsy to use in the
+ internal operation of the IP4 driver.
+
+ @param IpInstance The IP4 child that requests the route table.
+
+ @retval EFI_SUCCESS The route table is successfully build
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the rotue table.
+
+**/
EFI_STATUS
Ip4BuildEfiRouteTable (
IN IP4_PROTOCOL *IpInstance
|