mirror of https://github.com/acidanthera/audk.git
385 lines
13 KiB
C
385 lines
13 KiB
C
/** @file
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Ip4 internal functions and type defintions.
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Copyright (c) 2005 - 2009, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __EFI_IP4_IMPL_H__
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#define __EFI_IP4_IMPL_H__
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#include <Uefi.h>
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#include <Protocol/IpSec.h>
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#include <Protocol/Ip4.h>
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#include <Protocol/Ip4Config.h>
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#include <Protocol/Arp.h>
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#include <Protocol/ManagedNetwork.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/BaseLib.h>
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#include <Library/UefiLib.h>
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#include <Library/NetLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/DpcLib.h>
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#include "Ip4Common.h"
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#include "Ip4Driver.h"
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#include "Ip4If.h"
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#include "Ip4Icmp.h"
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#include "Ip4Option.h"
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#include "Ip4Igmp.h"
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#include "Ip4Route.h"
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#include "Ip4Input.h"
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#include "Ip4Output.h"
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#define IP4_PROTOCOL_SIGNATURE SIGNATURE_32 ('I', 'P', '4', 'P')
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#define IP4_SERVICE_SIGNATURE SIGNATURE_32 ('I', 'P', '4', 'S')
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//
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// The state of IP4 protocol. It starts from UNCONFIGED. if it is
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// successfully configured, it goes to CONFIGED. if configure NULL
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// is called, it becomes UNCONFIGED again. If (partly) destoried, it
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// becomes DESTORY.
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//
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#define IP4_STATE_UNCONFIGED 0
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#define IP4_STATE_CONFIGED 1
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#define IP4_STATE_DESTORY 2
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//
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// The state of IP4 service. It starts from UNSTARTED. It transits
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// to STARTED if autoconfigure is started. If default address is
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// configured, it becomes CONFIGED. and if partly destoried, it goes
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// to DESTORY.
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//
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#define IP4_SERVICE_UNSTARTED 0
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#define IP4_SERVICE_STARTED 1
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#define IP4_SERVICE_CONFIGED 2
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#define IP4_SERVICE_DESTORY 3
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///
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/// IP4_TXTOKEN_WRAP wraps the upper layer's transmit token.
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/// The user's data is kept in the Packet. When fragment is
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/// needed, each fragment of the Packet has a reference to the
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/// Packet, no data is actually copied. The Packet will be
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/// released when all the fragments of it have been recycled by
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/// MNP. Upon then, the IP4_TXTOKEN_WRAP will be released, and
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/// user's event signalled.
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///
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typedef struct {
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IP4_PROTOCOL *IpInstance;
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EFI_IP4_COMPLETION_TOKEN *Token;
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EFI_EVENT IpSecRecycleSignal;
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NET_BUF *Packet;
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BOOLEAN Sent;
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INTN Life;
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} IP4_TXTOKEN_WRAP;
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///
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/// IP4_IPSEC_WRAP wraps the packet received from MNP layer. The packet
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/// will be released after it has been processed by the receiver. Upon then,
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/// the IP4_IPSEC_WRAP will be released, and the IpSecRecycleSignal will be signaled
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/// to notice IPsec to free the resources.
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///
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typedef struct {
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EFI_EVENT IpSecRecycleSignal;
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NET_BUF *Packet;
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} IP4_IPSEC_WRAP;
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///
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/// IP4_RXDATA_WRAP wraps the data IP4 child delivers to the
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/// upper layers. The received packet is kept in the Packet.
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/// The Packet itself may be constructured from some fragments.
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/// All the fragments of the Packet is organized by a
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/// IP4_ASSEMBLE_ENTRY structure. If the Packet is recycled by
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/// the upper layer, the assemble entry and its associated
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/// fragments will be freed at last.
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///
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typedef struct {
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LIST_ENTRY Link;
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IP4_PROTOCOL *IpInstance;
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NET_BUF *Packet;
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EFI_IP4_RECEIVE_DATA RxData;
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} IP4_RXDATA_WRAP;
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struct _IP4_PROTOCOL {
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UINT32 Signature;
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EFI_IP4_PROTOCOL Ip4Proto;
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EFI_HANDLE Handle;
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INTN State;
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IP4_SERVICE *Service;
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LIST_ENTRY Link; // Link to all the IP protocol from the service
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//
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// User's transmit/receive tokens, and received/deliverd packets
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//
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NET_MAP RxTokens;
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NET_MAP TxTokens; // map between (User's Token, IP4_TXTOKE_WRAP)
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LIST_ENTRY Received; // Received but not delivered packet
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LIST_ENTRY Delivered; // Delivered and to be recycled packets
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EFI_LOCK RecycleLock;
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//
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// Instance's address and route tables. There are two route tables.
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// RouteTable is used by the IP4 driver to route packet. EfiRouteTable
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// is used to communicate the current route info to the upper layer.
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//
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IP4_INTERFACE *Interface;
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LIST_ENTRY AddrLink; // Ip instances with the same IP address.
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IP4_ROUTE_TABLE *RouteTable;
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EFI_IP4_ROUTE_TABLE *EfiRouteTable;
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UINT32 EfiRouteCount;
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//
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// IGMP data for this instance
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//
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IP4_ADDR *Groups; // stored in network byte order
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UINT32 GroupCount;
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EFI_IP4_CONFIG_DATA ConfigData;
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};
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struct _IP4_SERVICE {
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UINT32 Signature;
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EFI_SERVICE_BINDING_PROTOCOL ServiceBinding;
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INTN State;
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BOOLEAN InDestory;
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//
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// List of all the IP instances and interfaces, and default
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// interface and route table and caches.
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//
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UINTN NumChildren;
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LIST_ENTRY Children;
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LIST_ENTRY Interfaces;
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IP4_INTERFACE *DefaultInterface;
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IP4_ROUTE_TABLE *DefaultRouteTable;
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//
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// Ip reassemble utilities, and IGMP data
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//
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IP4_ASSEMBLE_TABLE Assemble;
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IGMP_SERVICE_DATA IgmpCtrl;
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//
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// Low level protocol used by this service instance
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//
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EFI_HANDLE Image;
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EFI_HANDLE Controller;
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EFI_HANDLE MnpChildHandle;
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EFI_MANAGED_NETWORK_PROTOCOL *Mnp;
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EFI_MANAGED_NETWORK_CONFIG_DATA MnpConfigData;
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EFI_SIMPLE_NETWORK_MODE SnpMode;
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EFI_EVENT Timer;
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//
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// Auto configure staff
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//
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EFI_IP4_CONFIG_PROTOCOL *Ip4Config;
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EFI_EVENT DoneEvent;
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EFI_EVENT ReconfigEvent;
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EFI_EVENT ActiveEvent;
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//
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// The string representation of the current mac address of the
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// NIC this IP4_SERVICE works on.
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//
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CHAR16 *MacString;
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UINT32 MaxPacketSize;
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UINT32 OldMaxPacketSize; ///< The MTU before IPsec enable.
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};
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#define IP4_INSTANCE_FROM_PROTOCOL(Ip4) \
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CR ((Ip4), IP4_PROTOCOL, Ip4Proto, IP4_PROTOCOL_SIGNATURE)
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#define IP4_SERVICE_FROM_PROTOCOL(Sb) \
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CR ((Sb), IP4_SERVICE, ServiceBinding, IP4_SERVICE_SIGNATURE)
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#define IP4_NO_MAPPING(IpInstance) (!(IpInstance)->Interface->Configured)
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extern EFI_IP4_PROTOCOL mEfiIp4ProtocolTemplete;
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/**
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Config the MNP parameter used by IP. The IP driver use one MNP
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child to transmit/receive frames. By default, it configures MNP
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to receive unicast/multicast/broadcast. And it will enable/disable
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the promiscous receive according to whether there is IP child
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enable that or not. If Force is FALSE, it will iterate through
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all the IP children to check whether the promiscuous receive
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setting has been changed. If it hasn't been changed, it won't
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reconfigure the MNP. If Force is TRUE, the MNP is configured no
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matter whether that is changed or not.
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@param[in] IpSb The IP4 service instance that is to be changed.
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@param[in] Force Force the configuration or not.
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@retval EFI_SUCCESS The MNP is successfully configured/reconfigured.
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@retval Others Configuration failed.
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**/
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EFI_STATUS
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Ip4ServiceConfigMnp (
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IN IP4_SERVICE *IpSb,
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IN BOOLEAN Force
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);
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/**
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Intiialize the IP4_PROTOCOL structure to the unconfigured states.
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@param IpSb The IP4 service instance.
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@param IpInstance The IP4 child instance.
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**/
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VOID
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Ip4InitProtocol (
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IN IP4_SERVICE *IpSb,
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IN OUT IP4_PROTOCOL *IpInstance
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);
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/**
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Clean up the IP4 child, release all the resources used by it.
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@param[in] IpInstance The IP4 child to clean up.
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@retval EFI_SUCCESS The IP4 child is cleaned up
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@retval EFI_DEVICE_ERROR Some resources failed to be released
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**/
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EFI_STATUS
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Ip4CleanProtocol (
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IN IP4_PROTOCOL *IpInstance
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);
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/**
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Cancel the user's receive/transmit request.
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@param[in] IpInstance The IP4 child
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@param[in] Token The token to cancel. If NULL, all token will be
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cancelled.
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@retval EFI_SUCCESS The token is cancelled
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@retval EFI_NOT_FOUND The token isn't found on either the
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transmit/receive queue
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@retval EFI_DEVICE_ERROR Not all token is cancelled when Token is NULL.
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**/
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EFI_STATUS
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Ip4Cancel (
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IN IP4_PROTOCOL *IpInstance,
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IN EFI_IP4_COMPLETION_TOKEN *Token OPTIONAL
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);
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/**
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Change the IP4 child's multicast setting. The caller
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should make sure that the parameters is valid.
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@param[in] IpInstance The IP4 child to change the setting.
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@param[in] JoinFlag TRUE to join the group, otherwise leave it
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@param[in] GroupAddress The target group address
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@retval EFI_ALREADY_STARTED Want to join the group, but already a member of it
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@retval EFI_OUT_OF_RESOURCES Failed to allocate some resources.
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@retval EFI_DEVICE_ERROR Failed to set the group configuraton
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@retval EFI_SUCCESS Successfully updated the group setting.
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@retval EFI_NOT_FOUND Try to leave the group which it isn't a member.
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**/
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EFI_STATUS
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Ip4Groups (
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IN IP4_PROTOCOL *IpInstance,
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IN BOOLEAN JoinFlag,
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IN EFI_IPv4_ADDRESS *GroupAddress OPTIONAL
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);
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/**
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The heart beat timer of IP4 service instance. It times out
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all of its IP4 children's received-but-not-delivered and
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transmitted-but-not-recycle packets, and provides time input
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for its IGMP protocol.
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@param[in] Event The IP4 service instance's heart beat timer.
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@param[in] Context The IP4 service instance.
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**/
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VOID
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EFIAPI
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Ip4TimerTicking (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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/**
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Decrease the life of the transmitted packets. If it is
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decreased to zero, cancel the packet. This function is
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called by Ip4PacketTimerTicking which time out both the
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received-but-not-delivered and transmitted-but-not-recycle
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packets.
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@param[in] Map The IP4 child's transmit map.
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@param[in] Item Current transmitted packet
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@param[in] Context Not used.
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@retval EFI_SUCCESS Always returns EFI_SUCCESS
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**/
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EFI_STATUS
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EFIAPI
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Ip4SentPacketTicking (
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IN NET_MAP *Map,
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IN NET_MAP_ITEM *Item,
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IN VOID *Context
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);
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/**
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The callback function for the net buffer which wraps the user's
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transmit token. Although it seems this function is pretty simple,
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there are some subtle things.
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When user requests the IP to transmit a packet by passing it a
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token, the token is wrapped in an IP4_TXTOKEN_WRAP and the data
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is wrapped in an net buffer. the net buffer's Free function is
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set to Ip4FreeTxToken. The Token and token wrap are added to the
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IP child's TxToken map. Then the buffer is passed to Ip4Output for
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transmission. If something error happened before that, the buffer
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is freed, which in turn will free the token wrap. The wrap may
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have been added to the TxToken map or not, and the user's event
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shouldn't be fired because we are still in the EfiIp4Transmit. If
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the buffer has been sent by Ip4Output, it should be removed from
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the TxToken map and user's event signaled. The token wrap and buffer
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are bound together. Check the comments in Ip4Output for information
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about IP fragmentation.
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@param[in] Context The token's wrap
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**/
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VOID
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EFIAPI
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Ip4FreeTxToken (
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IN VOID *Context
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);
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extern EFI_IPSEC2_PROTOCOL *mIpSec;
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#endif
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