diff options
Diffstat (limited to 'MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Main.c')
| -rw-r--r-- | MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Main.c | 869 |
1 files changed, 869 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Main.c b/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Main.c new file mode 100644 index 0000000000..4f897cb54b --- /dev/null +++ b/MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Main.c @@ -0,0 +1,869 @@ +/** @file
+
+Copyright (c) 2006 - 2007, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+ Udp4Main.c
+
+Abstract:
+
+
+**/
+
+#include "Udp4Impl.h"
+
+#include <Protocol/Ip4.h>
+
+EFI_UDP4_PROTOCOL mUdp4Protocol = {
+ Udp4GetModeData,
+ Udp4Configure,
+ Udp4Groups,
+ Udp4Routes,
+ Udp4Transmit,
+ Udp4Receive,
+ Udp4Cancel,
+ Udp4Poll
+};
+
+
+/**
+ This function copies the current operational settings of this EFI UDPv4 Protocol
+ instance into user-supplied buffers. This function is used optionally to retrieve
+ the operational mode data of underlying networks or drivers.
+
+ @param This Pointer to the EFI_UDP4_PROTOCOL instance.
+ @param Udp4ConfigData Pointer to the buffer to receive the current
+ configuration data.
+ @param Ip4ModeData Pointer to the EFI IPv4 Protocol mode data
+ structure.
+ @param MnpConfigData Pointer to the managed network configuration data
+ structure.
+ @param SnpModeData Pointer to the simple network mode data structure.
+
+ @retval EFI_SUCCESS The mode data was read.
+ @retval EFI_NOT_STARTED When Udp4ConfigData is queried, no configuration
+ data is available because this instance has not
+ been started.
+ @retval EFI_INVALID_PARAMETER This is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4GetModeData (
+ IN EFI_UDP4_PROTOCOL *This,
+ OUT EFI_UDP4_CONFIG_DATA *Udp4ConfigData OPTIONAL,
+ OUT EFI_IP4_MODE_DATA *Ip4ModeData OPTIONAL,
+ OUT EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL,
+ OUT EFI_SIMPLE_NETWORK_MODE *SnpModeData OPTIONAL
+ )
+{
+ UDP4_INSTANCE_DATA *Instance;
+ EFI_IP4_PROTOCOL *Ip;
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+
+ if (!Instance->Configured && (Udp4ConfigData != NULL)) {
+ return EFI_NOT_STARTED;
+ }
+
+ OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);
+
+ if (Udp4ConfigData != NULL) {
+ //
+ // Set the Udp4ConfigData.
+ //
+ *Udp4ConfigData = Instance->ConfigData;
+ }
+
+ Ip = Instance->IpInfo->Ip;
+
+ //
+ // Get the underlying Ip4ModeData, MnpConfigData and SnpModeData.
+ //
+ Status = Ip->GetModeData (Ip, Ip4ModeData, MnpConfigData, SnpModeData);
+
+ NET_RESTORE_TPL (OldTpl);
+
+ return Status;
+}
+
+
+/**
+ This function is used to do the following:
+ Initialize and start this instance of the EFI UDPv4 Protocol.
+ Change the filtering rules and operational parameters.
+ Reset this instance of the EFI UDPv4 Protocol.
+
+ @param This Pointer to the EFI_UDP4_PROTOCOL instance.
+ @param UdpConfigData Pointer to the buffer to receive the current mode
+ data.
+
+ @retval EFI_SUCCESS The configuration settings were set, changed, or
+ reset successfully.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
+ BOOTP, RARP, etc.) is not finished yet.
+ @retval EFI_INVALID_PARAMETER One or more following conditions are TRUE: This is
+ NULL. UdpConfigData.StationAddress is not a valid
+ unicast IPv4 address. UdpConfigData.SubnetMask is
+ not a valid IPv4 address mask.
+ UdpConfigData.RemoteAddress is not a valid unicast
+ IPv4 address if it is not zero.
+ @retval EFI_ALREADY_STARTED The EFI UDPv4 Protocol instance is already
+ started/configured and must be stopped/reset
+ before it can be reconfigured. Only TypeOfService,
+ TimeToLive, DoNotFragment, ReceiveTimeout, and
+ TransmitTimeout can be reconfigured without
+ stopping the current instance of the EFI UDPv4
+ Protocol.
+ @retval EFI_ACCESS_DENIED UdpConfigData.AllowDuplicatePort is FALSE and
+ UdpConfigData.StationPort is already used by other
+ instance.
+ @retval EFI_OUT_OF_RESOURCES The EFI UDPv4 Protocol driver cannot allocate
+ memory for this EFI UDPv4 Protocol instance.
+ @retval EFI_DEVICE_ERROR An unexpected network or system error occurred and
+ this instance was not opened.
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4Configure (
+ IN EFI_UDP4_PROTOCOL *This,
+ IN EFI_UDP4_CONFIG_DATA *UdpConfigData OPTIONAL
+ )
+{
+ EFI_STATUS Status;
+ UDP4_INSTANCE_DATA *Instance;
+ UDP4_SERVICE_DATA *Udp4Service;
+ EFI_TPL OldTpl;
+ IP4_ADDR StationAddress;
+ IP4_ADDR SubnetMask;
+ IP4_ADDR RemoteAddress;
+ EFI_IP4_CONFIG_DATA Ip4ConfigData;
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+
+ if (!Instance->Configured && (UdpConfigData == NULL)) {
+ return EFI_SUCCESS;
+ }
+
+ Udp4Service = Instance->Udp4Service;
+ Status = EFI_SUCCESS;
+
+ OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);
+
+ if (UdpConfigData != NULL) {
+
+ StationAddress = EFI_NTOHL (UdpConfigData->StationAddress);
+ SubnetMask = EFI_NTOHL (UdpConfigData->SubnetMask);
+ RemoteAddress = EFI_NTOHL (UdpConfigData->RemoteAddress);
+
+ if (!UdpConfigData->UseDefaultAddress &&
+ (!IP4_IS_VALID_NETMASK (SubnetMask) ||
+ !((StationAddress == 0) || Ip4IsUnicast (StationAddress, SubnetMask)) ||
+ !((RemoteAddress == 0) || Ip4IsUnicast (RemoteAddress, 0)))) {
+ //
+ // Don't use default address, and subnet mask is invalid or StationAddress is not
+ // a valid unicast IPv4 address or RemoteAddress is not a valid unicast IPv4 address
+ // if it is not 0.
+ //
+ Status = EFI_INVALID_PARAMETER;
+ goto ON_EXIT;
+ }
+
+ if (Instance->Configured) {
+ //
+ // The instance is already configured, try to do the re-configuration.
+ //
+ if (!Udp4IsReconfigurable (&Instance->ConfigData, UdpConfigData)) {
+ //
+ // If the new configuration data wants to change some unreconfigurable
+ // settings, return EFI_ALREADY_STARTED.
+ //
+ Status = EFI_ALREADY_STARTED;
+ goto ON_EXIT;
+ }
+
+ //
+ // Save the reconfigurable parameters.
+ //
+ Instance->ConfigData.TypeOfService = UdpConfigData->TypeOfService;
+ Instance->ConfigData.TimeToLive = UdpConfigData->TimeToLive;
+ Instance->ConfigData.DoNotFragment = UdpConfigData->DoNotFragment;
+ Instance->ConfigData.ReceiveTimeout = UdpConfigData->ReceiveTimeout;
+ Instance->ConfigData.TransmitTimeout = UdpConfigData->TransmitTimeout;
+ } else {
+ //
+ // Construct the Ip configuration data from the UdpConfigData.
+ //
+ Udp4BuildIp4ConfigData (UdpConfigData, &Ip4ConfigData);
+
+ //
+ // Configure the Ip instance wrapped in the IpInfo.
+ //
+ Status = IpIoConfigIp (Instance->IpInfo, &Ip4ConfigData);
+ if (EFI_ERROR (Status)) {
+ if (Status == EFI_NO_MAPPING) {
+ Instance->IsNoMapping = TRUE;
+ }
+
+ goto ON_EXIT;
+ }
+
+ Instance->IsNoMapping = FALSE;
+
+ //
+ // Save the configuration data.
+ //
+ Instance->ConfigData = *UdpConfigData;
+ Instance->ConfigData.StationAddress = Ip4ConfigData.StationAddress;
+ Instance->ConfigData.SubnetMask = Ip4ConfigData.SubnetMask;
+
+ //
+ // Try to allocate the required port resource.
+ //
+ Status = Udp4Bind (&Udp4Service->ChildrenList, &Instance->ConfigData);
+ if (EFI_ERROR (Status)) {
+ //
+ // Reset the ip instance if bind fails.
+ //
+ IpIoConfigIp (Instance->IpInfo, NULL);
+ goto ON_EXIT;
+ }
+
+ //
+ // Pre calculate the checksum for the pseudo head, ignore the UDP length first.
+ //
+ Instance->HeadSum = NetPseudoHeadChecksum (
+ EFI_IP4 (Instance->ConfigData.StationAddress),
+ EFI_IP4 (Instance->ConfigData.RemoteAddress),
+ EFI_IP_PROTO_UDP,
+ 0
+ );
+
+ Instance->Configured = TRUE;
+ }
+ } else {
+ //
+ // UdpConfigData is NULL, reset the instance.
+ //
+ Instance->Configured = FALSE;
+ Instance->IsNoMapping = FALSE;
+
+ //
+ // Reset the Ip instance wrapped in the IpInfo.
+ //
+ IpIoConfigIp (Instance->IpInfo, NULL);
+
+ //
+ // Cancel all the user tokens.
+ //
+ Udp4InstanceCancelToken (Instance, NULL);
+
+ //
+ // Remove the buffered RxData for this instance.
+ //
+ Udp4FlushRxData (&Instance->RcvdDgramQue);
+ }
+
+ Udp4SetVariableData (Instance->Udp4Service);
+
+ON_EXIT:
+
+ NET_RESTORE_TPL (OldTpl);
+
+ return Status;
+}
+
+
+/**
+ This function is used to enable and disable the multicast group filtering.
+
+ @param This Pointer to the EFI_UDP4_PROTOCOL instance.
+ @param JoinFlag Set to TRUE to join a multicast group. Set to
+ FALSE to leave one or all multicast groups.
+ @param MulticastAddress Pointer to multicast group address to join or
+ leave.
+
+ @retval EFI_SUCCESS The operation completed successfully.
+ @retval EFI_NOT_STARTED The EFI UDPv4 Protocol instance has not been
+ started.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
+ BOOTP, RARP, etc.) is not finished yet.
+ @retval EFI_OUT_OF_RESOURCES Could not allocate resources to join the group.
+ @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
+ This is NULL. JoinFlag is TRUE and
+ MulticastAddress is NULL. JoinFlag is TRUE and
+ *MulticastAddress is not a valid multicast
+ address.
+ @retval EFI_ALREADY_STARTED The group address is already in the group table
+ (when JoinFlag is TRUE).
+ @retval EFI_NOT_FOUND The group address is not in the group table (when
+ JoinFlag is FALSE).
+ @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4Groups (
+ IN EFI_UDP4_PROTOCOL *This,
+ IN BOOLEAN JoinFlag,
+ IN EFI_IPv4_ADDRESS *MulticastAddress OPTIONAL
+ )
+{
+ EFI_STATUS Status;
+ UDP4_INSTANCE_DATA *Instance;
+ EFI_IP4_PROTOCOL *Ip;
+ EFI_TPL OldTpl;
+
+ if ((This == NULL) ||
+ (JoinFlag && (MulticastAddress == NULL)) ||
+ (JoinFlag && !IP4_IS_MULTICAST (EFI_NTOHL (*MulticastAddress)))) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+
+ if (Instance->IsNoMapping) {
+ return EFI_NO_MAPPING;
+ }
+
+ if (!Instance->Configured) {
+ return EFI_NOT_STARTED;
+ }
+
+ Ip = Instance->IpInfo->Ip;
+
+ OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);
+
+ //
+ // Invoke the Ip instance the Udp4 instance consumes to do the group operation.
+ //
+ Status = Ip->Groups (Ip, JoinFlag, MulticastAddress);
+
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+
+ //
+ // Keep a local copy of the configured multicast IPs because IpIo receives
+ // datagrams from the 0 station address IP instance and then UDP delivers to
+ // the matched instance. This copy of multicast IPs is used to avoid receive
+ // the mutlicast datagrams destinated to multicast IPs the other instances configured.
+ //
+ if (JoinFlag) {
+
+ NetMapInsertTail (
+ &Instance->McastIps,
+ (VOID *) (UINTN) EFI_IP4 (*MulticastAddress),
+ NULL
+ );
+ } else {
+
+ NetMapIterate (&Instance->McastIps, Udp4LeaveGroup, MulticastAddress);
+ }
+
+ON_EXIT:
+
+ NET_RESTORE_TPL (OldTpl);
+
+ return Status;
+}
+
+
+/**
+ This function adds a route to or deletes a route from the routing table.
+
+ @param This Pointer to the EFI_UDP4_PROTOCOL instance.
+ @param DeleteRoute Set to TRUE to delete this route from the routing
+ table. Set to FALSE to add this route to the
+ routing table.
+ @param SubnetAddress The destination network address that needs to be
+ routed.
+ @param SubnetMask The subnet mask of SubnetAddress.
+ @param GatewayAddress The gateway IP address for this route.
+
+ @retval EFI_SUCCESS The operation completed successfully.
+ @retval EFI_NOT_STARTED The EFI UDPv4 Protocol instance has not been
+ started.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
+ BOOTP, RARP, etc.) is not finished yet.
+ @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
+ This is NULL. SubnetAddress is NULL. SubnetMask is
+ NULL. GatewayAddress is NULL. SubnetAddress is not
+ a valid subnet address. SubnetMask is not a valid
+ subnet mask. GatewayAddress is not a valid unicast
+ IP address.
+ @retval EFI_OUT_OF_RESOURCES Could not add the entry to the routing table.
+ @retval EFI_NOT_FOUND This route is not in the routing table.
+ @retval EFI_ACCESS_DENIED The route is already defined in the routing table.
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4Routes (
+ IN EFI_UDP4_PROTOCOL *This,
+ IN BOOLEAN DeleteRoute,
+ IN EFI_IPv4_ADDRESS *SubnetAddress,
+ IN EFI_IPv4_ADDRESS *SubnetMask,
+ IN EFI_IPv4_ADDRESS *GatewayAddress
+ )
+{
+ UDP4_INSTANCE_DATA *Instance;
+ EFI_IP4_PROTOCOL *Ip;
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+
+ if (Instance->IsNoMapping) {
+ return EFI_NO_MAPPING;
+ }
+
+ if (!Instance->Configured) {
+ return EFI_NOT_STARTED;
+ }
+
+ Ip = Instance->IpInfo->Ip;
+
+ //
+ // Invoke the Ip instance the Udp4 instance consumes to do the actual operation.
+ //
+ return Ip->Routes (Ip, DeleteRoute, SubnetAddress, SubnetMask, GatewayAddress);
+}
+
+
+/**
+ This function places a sending request to this instance of the EFI UDPv4 Protocol,
+ alongside the transmit data that was filled by the user.
+
+ @param This Pointer to the EFI_UDP4_PROTOCOL instance.
+ @param Token Pointer to the completion token that will be
+ placed into the transmit queue.
+
+ @retval EFI_SUCCESS The data has been queued for transmission.
+ @retval EFI_NOT_STARTED This EFI UDPv4 Protocol instance has not been
+ started.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
+ BOOTP, RARP, etc.) is not finished yet.
+ @retval EFI_INVALID_PARAMETER One or more of the following are TRUE: This is
+ NULL. Token is NULL. Token.Event is NULL.
+ Token.Packet.TxData is NULL.
+ Token.Packet.TxData.FragmentCount is zero.
+ Token.Packet.TxData.DataLength is not equal to the
+ sum of fragment lengths. One or more of the
+ Token.Packet.TxData.FragmentTable[].
+ FragmentLength fields is zero. One or more of the
+ Token.Packet.TxData.FragmentTable[].
+ FragmentBuffer fields is NULL.
+ Token.Packet.TxData. GatewayAddress is not a
+ unicast IPv4 address if it is not NULL. One or
+ more IPv4 addresses in Token.Packet.TxData.
+ UdpSessionData are not valid unicast IPv4
+ addresses if the UdpSessionData is not NULL.
+ @retval EFI_ACCESS_DENIED The transmit completion token with the same
+ Token.Event is already in the transmit queue.
+ @retval EFI_NOT_READY The completion token could not be queued because
+ the transmit queue is full.
+ @retval EFI_OUT_OF_RESOURCES Could not queue the transmit data.
+ @retval EFI_NOT_FOUND There is no route to the destination network or
+ address.
+ @retval EFI_BAD_BUFFER_SIZE The data length is greater than the maximum UDP
+ packet size. Or the length of the IP header + UDP
+ header + data length is greater than MTU if
+ DoNotFragment is TRUE.
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4Transmit (
+ IN EFI_UDP4_PROTOCOL *This,
+ IN EFI_UDP4_COMPLETION_TOKEN *Token
+ )
+{
+ EFI_STATUS Status;
+ UDP4_INSTANCE_DATA *Instance;
+ EFI_TPL OldTpl;
+ NET_BUF *Packet;
+ EFI_UDP4_HEADER *Udp4Header;
+ EFI_UDP4_CONFIG_DATA *ConfigData;
+ IP4_ADDR Destination;
+ EFI_UDP4_TRANSMIT_DATA *TxData;
+ EFI_UDP4_SESSION_DATA *UdpSessionData;
+ UDP4_SERVICE_DATA *Udp4Service;
+ IP_IO_OVERRIDE Override;
+ UINT16 HeadSum;
+
+ if ((This == NULL) || (Token == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+
+ if (Instance->IsNoMapping) {
+ return EFI_NO_MAPPING;
+ }
+
+ if (!Instance->Configured) {
+ return EFI_NOT_STARTED;
+ }
+
+ OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);
+
+ //
+ // Validate the Token, if the token is invalid return the error code.
+ //
+ Status = Udp4ValidateTxToken (Instance, Token);
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+
+ if (EFI_ERROR (NetMapIterate (&Instance->TxTokens, Udp4TokenExist, Token)) ||
+ EFI_ERROR (NetMapIterate (&Instance->RxTokens, Udp4TokenExist, Token))) {
+ //
+ // Try to find a duplicate token in the two token maps, if found, return
+ // EFI_ACCESS_DENIED.
+ //
+ Status = EFI_ACCESS_DENIED;
+ goto ON_EXIT;
+ }
+
+ TxData = Token->Packet.TxData;
+
+ //
+ // Create a net buffer to hold the user buffer and the udp header.
+ //
+ Packet = NetbufFromExt (
+ (NET_FRAGMENT *)TxData->FragmentTable,
+ TxData->FragmentCount,
+ UDP4_HEADER_SIZE,
+ 0,
+ Udp4NetVectorExtFree,
+ NULL
+ );
+ if (Packet == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto ON_EXIT;
+ }
+
+ //
+ // Store the IpIo in ProtoData.
+ //
+ Udp4Service = Instance->Udp4Service;
+ *((UINTN *) &Packet->ProtoData[0]) = (UINTN) (Udp4Service->IpIo);
+
+ Udp4Header = (EFI_UDP4_HEADER *) NetbufAllocSpace (Packet, UDP4_HEADER_SIZE, TRUE);
+ ConfigData = &Instance->ConfigData;
+
+ //
+ // Fill the udp header.
+ //
+ Udp4Header->SrcPort = HTONS (ConfigData->StationPort);
+ Udp4Header->DstPort = HTONS (ConfigData->RemotePort);
+ Udp4Header->Length = HTONS (Packet->TotalSize);
+ Udp4Header->Checksum = 0;
+
+ UdpSessionData = TxData->UdpSessionData;
+ Override.SourceAddress = ConfigData->StationAddress;
+
+ if (UdpSessionData != NULL) {
+ //
+ // Set the SourceAddress, SrcPort and Destination according to the specified
+ // UdpSessionData.
+ //
+ if (EFI_IP4 (UdpSessionData->SourceAddress) != 0) {
+ Override.SourceAddress = UdpSessionData->SourceAddress;
+ }
+
+ if (UdpSessionData->SourcePort != 0) {
+ Udp4Header->SrcPort = HTONS (UdpSessionData->SourcePort);
+ }
+
+ Destination = EFI_IP4 (UdpSessionData->DestinationAddress);
+
+ if (UdpSessionData->DestinationPort != 0) {
+ Udp4Header->DstPort = HTONS (UdpSessionData->DestinationPort);
+ }
+
+ //
+ // calculate the pseudo head checksum using the overridden parameters.
+ //
+ HeadSum = NetPseudoHeadChecksum (
+ EFI_IP4 (Override.SourceAddress),
+ Destination,
+ EFI_IP_PROTO_UDP,
+ 0
+ );
+ } else {
+ //
+ // UdpSessionData is NULL, use the address and port information previously configured.
+ //
+ Destination = EFI_IP4 (ConfigData->RemoteAddress);
+ HeadSum = Instance->HeadSum;
+ }
+
+ //
+ // calculate the checksum.
+ //
+ Udp4Header->Checksum = Udp4Checksum (Packet, HeadSum);
+ if (Udp4Header->Checksum == 0) {
+ //
+ // If the calculated checksum is 0, fill the Checksum field with all ones.
+ //
+ Udp4Header->Checksum = 0xffff;
+ }
+
+ //
+ // Fill the IpIo Override data.
+ //
+ EFI_IP4 (Override.GatewayAddress) = (TxData->GatewayAddress != NULL) ?
+ EFI_IP4 (*(TxData->GatewayAddress)) : 0;
+ Override.Protocol = EFI_IP_PROTO_UDP;
+ Override.TypeOfService = ConfigData->TypeOfService;
+ Override.TimeToLive = ConfigData->TimeToLive;
+ Override.DoNotFragment = ConfigData->DoNotFragment;
+
+ //
+ // Save the token into the TxToken map.
+ //
+ Status = NetMapInsertTail (&Instance->TxTokens, Token, Packet);
+ if (EFI_ERROR (Status)) {
+ goto FREE_PACKET;
+ }
+
+ //
+ // Send out this datagram through IpIo.
+ //
+ Status = IpIoSend (
+ Udp4Service->IpIo,
+ Packet,
+ Instance->IpInfo,
+ Instance,
+ Token,
+ Destination,
+ &Override
+ );
+ if (EFI_ERROR (Status)) {
+ //
+ // Remove this token from the TxTokens.
+ //
+ Udp4RemoveToken (&Instance->TxTokens, Token);
+ }
+
+FREE_PACKET:
+
+ NetbufFree (Packet);
+
+ON_EXIT:
+
+ NET_RESTORE_TPL (OldTpl);
+
+ return Status;
+}
+
+
+/**
+ This function places a completion token into the receive packet queue. This function
+ is always asynchronous.
+
+ @param This Pointer to the EFI_UDP4_PROTOCOL instance.
+ @param Token Pointer to a token that is associated with the
+ receive data descriptor.
+
+ @retval EFI_SUCCESS The receive completion token is cached.
+ @retval EFI_NOT_STARTED This EFI UDPv4 Protocol instance has not been
+ started.
+ @retval EFI_NO_MAPPING When using a default address, configuration (DHCP,
+ BOOTP, RARP, etc.) is not finished yet.
+ @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
+ This is NULL. Token is NULL. Token.Event is NULL.
+ @retval EFI_OUT_OF_RESOURCES The receive completion token could not be queued
+ due to a lack of system resources (usually
+ memory).
+ @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
+ The EFI UDPv4 Protocol instance has been reset to
+ startup defaults.
+ @retval EFI_ACCESS_DENIED A receive completion token with the same
+ Token.Event is already in the receive queue.
+ @retval EFI_NOT_READY The receive request could not be queued because
+ the receive queue is full.
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4Receive (
+ IN EFI_UDP4_PROTOCOL *This,
+ IN EFI_UDP4_COMPLETION_TOKEN *Token
+ )
+{
+ EFI_STATUS Status;
+ UDP4_INSTANCE_DATA *Instance;
+ EFI_TPL OldTpl;
+
+ if ((This == NULL) || (Token == NULL) || (Token->Event == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+
+ if (Instance->IsNoMapping) {
+ return EFI_NO_MAPPING;
+ }
+
+ if (!Instance->Configured) {
+ return EFI_NOT_STARTED;
+ }
+
+ OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);
+
+ if (EFI_ERROR (NetMapIterate (&Instance->RxTokens, Udp4TokenExist, Token))||
+ EFI_ERROR (NetMapIterate (&Instance->TxTokens, Udp4TokenExist, Token))) {
+ //
+ // Return EFI_ACCESS_DENIED if the specified token is already in the TxTokens or
+ // RxTokens map.
+ //
+ Status = EFI_ACCESS_DENIED;
+ goto ON_EXIT;
+ }
+
+ Token->Packet.RxData = NULL;
+
+ //
+ // Save the token into the RxTokens map.
+ //
+ Status = NetMapInsertTail (&Instance->RxTokens, Token, NULL);
+ if (EFI_ERROR (Status)) {
+ return EFI_NOT_READY;
+ }
+
+ //
+ // If there is an icmp error, report it.
+ //
+ Udp4ReportIcmpError (Instance);
+
+ //
+ // Try to delivered the received datagrams.
+ //
+ Udp4InstanceDeliverDgram (Instance);
+
+ON_EXIT:
+
+ NET_RESTORE_TPL (OldTpl);
+
+ return Status;
+}
+
+
+/**
+ This function is used to abort a pending transmit or receive request.
+
+ @param This Pointer to the EFI_UDP4_PROTOCOL instance.
+ @param Token Pointer to a token that has been issued by
+ EFI_UDP4_PROTOCOL.Transmit() or
+ EFI_UDP4_PROTOCOL.Receive().
+
+ @retval EFI_SUCCESS The asynchronous I/O request is aborted and
+ Token.Event is signaled. When Token is NULL, all
+ pending requests are aborted and their events are
+ signaled.
+ @retval EFI_INVALID_PARAMETER This is NULL.
+ @retval EFI_NOT_STARTED This instance has not been started.
+ @retval EFI_NO_MAPPING When using the default address, configuration
+ (DHCP, BOOTP, RARP, etc.) is not finished yet.
+ @retval EFI_NOT_FOUND When Token is not NULL, the asynchronous I/O
+ request is not found in the transmit or receive
+ queue. It is either completed or not issued by
+ Transmit() or Receive().
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4Cancel (
+ IN EFI_UDP4_PROTOCOL *This,
+ IN EFI_UDP4_COMPLETION_TOKEN *Token OPTIONAL
+ )
+{
+ EFI_STATUS Status;
+ UDP4_INSTANCE_DATA *Instance;
+ EFI_TPL OldTpl;
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+
+ if (Instance->IsNoMapping) {
+ return EFI_NO_MAPPING;
+ }
+
+ if (!Instance->Configured) {
+ return EFI_NOT_STARTED;
+ }
+
+ OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);
+
+ //
+ // Cancle the tokens specified by Token for this instance.
+ //
+ Status = Udp4InstanceCancelToken (Instance, Token);
+
+ NET_RESTORE_TPL (OldTpl);
+
+ return Status;
+}
+
+
+/**
+ This function can be used by network drivers and applications to increase the rate that
+ data packets are moved between the communications device and the transmit/receive queues.
+ Argumens:
+ This - Pointer to the EFI_UDP4_PROTOCOL instance.
+
+ @retval EFI_SUCCESS Incoming or outgoing data was processed.
+ @retval EFI_INVALID_PARAMETER This is NULL.
+ @retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
+ @retval EFI_TIMEOUT Data was dropped out of the transmit and/or
+ receive queue.
+
+**/
+EFI_STATUS
+EFIAPI
+Udp4Poll (
+ IN EFI_UDP4_PROTOCOL *This
+ )
+{
+ UDP4_INSTANCE_DATA *Instance;
+ EFI_IP4_PROTOCOL *Ip;
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = UDP4_INSTANCE_DATA_FROM_THIS (This);
+ Ip = Instance->IpInfo->Ip;
+
+ //
+ // Invode the Ip instance consumed by the udp instance to do the poll operation.
+ //
+ return Ip->Poll (Ip);
+}
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