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Declaration of structures and functions of MnpDxe driver.
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Copyright (c) 2005 - 2010, 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
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of the BSD License which accompanies this distribution. The full
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text of the license may be found at<BR>
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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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#include "MnpDriver.h"
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#define NET_ETHER_FCS_SIZE 4
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#define MNP_SYS_POLL_INTERVAL (10 * TICKS_PER_MS) // 10 milliseconds
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#define MNP_TIMEOUT_CHECK_INTERVAL (50 * TICKS_PER_MS) // 50 milliseconds
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#define MNP_MEDIA_DETECT_INTERVAL (500 * TICKS_PER_MS) // 500 milliseconds
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#define MNP_TX_TIMEOUT_TIME (500 * TICKS_PER_MS) // 500 milliseconds
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#define MNP_INIT_NET_BUFFER_NUM 512
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#define MNP_NET_BUFFER_INCREASEMENT 64
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#define MNP_MAX_NET_BUFFER_NUM 65536
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#define MNP_MAX_RCVD_PACKET_QUE_SIZE 256
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#define MNP_RECEIVE_UNICAST 0x01
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#define MNP_RECEIVE_BROADCAST 0x02
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#define UNICAST_PACKET MNP_RECEIVE_UNICAST
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#define BROADCAST_PACKET MNP_RECEIVE_BROADCAST
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#define MNP_INSTANCE_DATA_SIGNATURE SIGNATURE_32 ('M', 'n', 'p', 'I')
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#define MNP_INSTANCE_DATA_FROM_THIS(a) \
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MNP_INSTANCE_DATA_SIGNATURE \
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MNP_SERVICE_DATA *MnpServiceData;
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EFI_MANAGED_NETWORK_PROTOCOL ManagedNetwork;
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LIST_ENTRY GroupCtrlBlkList;
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LIST_ENTRY RxDeliveredPacketQueue;
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LIST_ENTRY RcvdPacketQueue;
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UINTN RcvdPacketQueueSize;
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EFI_MANAGED_NETWORK_CONFIG_DATA ConfigData;
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EFI_MAC_ADDRESS Address;
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LIST_ENTRY CtrlBlkEntry;
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MNP_GROUP_ADDRESS *GroupAddress;
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} MNP_GROUP_CONTROL_BLOCK;
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MNP_INSTANCE_DATA *Instance;
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EFI_MANAGED_NETWORK_RECEIVE_DATA RxData;
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Initialize the mnp device context data.
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@param[in, out] MnpDeviceData Pointer to the mnp device context data.
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@param[in] ImageHandle The driver image handle.
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@param[in] ControllerHandle Handle of device to bind driver to.
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@retval EFI_SUCCESS The mnp service context is initialized.
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@retval EFI_UNSUPPORTED ControllerHandle does not support Simple Network Protocol.
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@retval Others Other errors as indicated.
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MnpInitializeDeviceData (
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IN OUT MNP_DEVICE_DATA *MnpDeviceData,
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IN EFI_HANDLE ImageHandle,
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IN EFI_HANDLE ControllerHandle
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Destroy the MNP device context data.
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@param[in, out] MnpDeviceData Pointer to the mnp device context data.
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@param[in] ImageHandle The driver image handle.
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MnpDestroyDeviceData (
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IN OUT MNP_DEVICE_DATA *MnpDeviceData,
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IN EFI_HANDLE ImageHandle
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Create mnp service context data.
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@param[in] MnpDeviceData Pointer to the mnp device context data.
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@param[in] VlanId The VLAN ID.
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@param[in] Priority The VLAN priority. If VlanId is 0,
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@return A pointer to MNP_SERVICE_DATA or NULL if failed to create MNP service context.
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MnpCreateServiceData (
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IN MNP_DEVICE_DATA *MnpDeviceData,
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IN UINT8 Priority OPTIONAL
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Initialize the mnp service context data.
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@param[in, out] MnpServiceData Pointer to the mnp service context data.
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@param[in] ImageHandle The driver image handle.
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@param[in] ControllerHandle Handle of device to bind driver to.
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@retval EFI_SUCCESS The mnp service context is initialized.
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@retval EFI_UNSUPPORTED ControllerHandle does not support Simple Network Protocol.
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@retval Others Other errors as indicated.
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MnpInitializeServiceData (
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IN OUT MNP_SERVICE_DATA *MnpServiceData,
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IN EFI_HANDLE ImageHandle,
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IN EFI_HANDLE ControllerHandle
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Destroy the MNP service context data.
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@param[in, out] MnpServiceData Pointer to the mnp service context data.
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@retval EFI_SUCCESS The mnp service context is destroyed.
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@retval Others Errors as indicated.
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MnpDestroyServiceData (
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IN OUT MNP_SERVICE_DATA *MnpServiceData
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Destroy all child of the MNP service data.
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@param[in, out] MnpServiceData Pointer to the mnp service context data.
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@retval EFI_SUCCESS All child are destroyed.
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@retval Others Failed to destroy all child.
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MnpDestroyServiceChild (
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IN OUT MNP_SERVICE_DATA *MnpServiceData
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Find the MNP Service Data for given VLAN ID.
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@param[in] MnpDeviceData Pointer to the mnp device context data.
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@param[in] VlanId The VLAN ID.
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@return A pointer to MNP_SERVICE_DATA or NULL if not found.
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IN MNP_DEVICE_DATA *MnpDeviceData,
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Initialize the mnp instance context data.
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@param[in] MnpServiceData Pointer to the mnp service context data.
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@param[in, out] Instance Pointer to the mnp instance context data
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MnpInitializeInstanceData (
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IN MNP_SERVICE_DATA *MnpServiceData,
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IN OUT MNP_INSTANCE_DATA *Instance
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Check whether the token specified by Arg matches the token in Item.
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@param[in] Map Pointer to the NET_MAP.
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@param[in] Item Pointer to the NET_MAP_ITEM.
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@param[in] Arg Pointer to the Arg, it's a pointer to the token to
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@retval EFI_SUCCESS The token specified by Arg is different from the
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@retval EFI_ACCESS_DENIED The token specified by Arg is the same as that in
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IN NET_MAP_ITEM *Item,
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Cancel the token specified by Arg if it matches the token in Item.
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@param[in, out] Map Pointer to the NET_MAP.
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@param[in, out] Item Pointer to the NET_MAP_ITEM.
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@param[in] Arg Pointer to the Arg, it's a pointer to the
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@retval EFI_SUCCESS The Arg is NULL, and the token in Item is cancelled,
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or the Arg isn't NULL, and the token in Item is
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different from the Arg.
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@retval EFI_ABORTED The Arg isn't NULL, the token in Item mathces the
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Arg, and the token is cancelled.
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IN OUT NET_MAP_ITEM *Item,
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Flush the instance's received data.
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@param[in, out] Instance Pointer to the mnp instance context data.
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MnpFlushRcvdDataQueue (
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IN OUT MNP_INSTANCE_DATA *Instance
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Configure the Instance using ConfigData.
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@param[in, out] Instance Pointer to the mnp instance context data.
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@param[in] ConfigData Pointer to the configuration data used to configure
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@retval EFI_SUCCESS The Instance is configured.
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@retval EFI_UNSUPPORTED EnableReceiveTimestamps is on and the
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implementation doesn't support it.
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@retval Others Other errors as indicated.
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MnpConfigureInstance (
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IN OUT MNP_INSTANCE_DATA *Instance,
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IN EFI_MANAGED_NETWORK_CONFIG_DATA *ConfigData OPTIONAL
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Do the group operations for this instance.
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@param[in, out] Instance Pointer to the instance context data.
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@param[in] JoinFlag Set to TRUE to join a group. Set to TRUE to
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leave a group/groups.
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@param[in] MacAddress Pointer to the group address to join or leave.
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@param[in] CtrlBlk Pointer to the group control block if JoinFlag
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@retval EFI_SUCCESS The group operation finished.
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@retval EFI_OUT_OF_RESOURCES Failed due to lack of memory resources.
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@retval Others Other errors as indicated.
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IN OUT MNP_INSTANCE_DATA *Instance,
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IN EFI_MAC_ADDRESS *MacAddress OPTIONAL,
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IN MNP_GROUP_CONTROL_BLOCK *CtrlBlk OPTIONAL
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Validates the Mnp transmit token.
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@param[in] Instance Pointer to the Mnp instance context data.
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@param[in] Token Pointer to the transmit token to check.
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@return The Token is valid or not.
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IN MNP_INSTANCE_DATA *Instance,
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IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token
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Build the packet to transmit from the TxData passed in.
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@param[in] MnpServiceData Pointer to the mnp service context data.
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@param[in] TxData Pointer to the transmit data containing the information
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@param[out] PktBuf Pointer to record the address of the packet.
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@param[out] PktLen Pointer to a UINT32 variable used to record the packet's
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IN MNP_SERVICE_DATA *MnpServiceData,
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IN EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData,
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Synchronously send out the packet.
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@param[in] MnpServiceData Pointer to the mnp service context data.
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@param[in] Packet Pointer to the pakcet buffer.
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@param[in] Length The length of the packet.
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@param[in, out] Token Pointer to the token the packet generated from.
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@retval EFI_SUCCESS The packet is sent out.
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@retval EFI_TIMEOUT Time out occurs, the packet isn't sent.
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@retval EFI_DEVICE_ERROR An unexpected network error occurs.
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IN MNP_SERVICE_DATA *MnpServiceData,
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IN OUT EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token
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Try to deliver the received packet to the instance.
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@param[in, out] Instance Pointer to the mnp instance context data.
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@retval EFI_SUCCESS The received packet is delivered, or there is no
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packet to deliver, or there is no available receive
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@retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.
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MnpInstanceDeliverPacket (
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IN OUT MNP_INSTANCE_DATA *Instance
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Recycle the RxData and other resources used to hold and deliver the received
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@param[in] Event The event this notify function registered to.
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@param[in] Context Pointer to the context data registerd to the Event.
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Try to receive a packet and deliver it.
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@param[in, out] MnpDeviceData Pointer to the mnp device context data.
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@retval EFI_SUCCESS add return value to function comment
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@retval EFI_NOT_STARTED The simple network protocol is not started.
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@retval EFI_NOT_READY No packet received.
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@retval EFI_DEVICE_ERROR An unexpected error occurs.
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IN OUT MNP_DEVICE_DATA *MnpDeviceData
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Allocate a free NET_BUF from MnpDeviceData->FreeNbufQue. If there is none
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in the queue, first try to allocate some and add them into the queue, then
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fetch the NET_BUF from the updated FreeNbufQue.
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@param[in, out] MnpDeviceData Pointer to the MNP_DEVICE_DATA.
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@return Pointer to the allocated free NET_BUF structure, if NULL the
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IN OUT MNP_DEVICE_DATA *MnpDeviceData
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Try to reclaim the Nbuf into the buffer pool.
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@param[in, out] MnpDeviceData Pointer to the mnp device context data.
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@param[in, out] Nbuf Pointer to the NET_BUF to free.
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IN OUT MNP_DEVICE_DATA *MnpDeviceData,
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Remove the received packets if timeout occurs.
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@param[in] Event The event this notify function registered to.
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@param[in] Context Pointer to the context data registered to the event.
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MnpCheckPacketTimeout (
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Poll to update MediaPresent field in SNP ModeData by Snp.GetStatus().
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@param[in] Event The event this notify function registered to.
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@param[in] Context Pointer to the context data registered to the event.
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MnpCheckMediaStatus (
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Poll to receive the packets from Snp. This function is either called by upperlayer
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protocols/applications or the system poll timer notify mechanism.
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@param[in] Event The event this notify function registered to.
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@param[in] Context Pointer to the context data registered to the event.
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Returns the operational parameters for the current MNP child driver. May also
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support returning the underlying SNP driver mode data.
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The GetModeData() function is used to read the current mode data (operational
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parameters) from the MNP or the underlying SNP.
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@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
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@param[out] MnpConfigData Pointer to storage for MNP operational parameters. Type
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EFI_MANAGED_NETWORK_CONFIG_DATA is defined in "Related
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@param[out] SnpModeData Pointer to storage for SNP operational parameters. This
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feature may be unsupported. Type EFI_SIMPLE_NETWORK_MODE
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is defined in the EFI_SIMPLE_NETWORK_PROTOCOL.
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@retval EFI_SUCCESS The operation completed successfully.
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@retval EFI_INVALID_PARAMETER This is NULL.
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@retval EFI_UNSUPPORTED The requested feature is unsupported in this
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@retval EFI_NOT_STARTED This MNP child driver instance has not been
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configured. The default values are returned in
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MnpConfigData if it is not NULL.
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@retval Others The mode data could not be read.
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IN EFI_MANAGED_NETWORK_PROTOCOL *This,
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OUT EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL,
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OUT EFI_SIMPLE_NETWORK_MODE *SnpModeData OPTIONAL
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Sets or clears the operational parameters for the MNP child driver.
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The Configure() function is used to set, change, or reset the operational
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parameters for the MNP child driver instance. Until the operational parameters
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have been set, no network traffic can be sent or received by this MNP child
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driver instance. Once the operational parameters have been reset, no more
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traffic can be sent or received until the operational parameters have been set
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Each MNP child driver instance can be started and stopped independently of
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each other by setting or resetting their receive filter settings with the
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Configure() function.
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After any successful call to Configure(), the MNP child driver instance is
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started. The internal periodic timer (if supported) is enabled. Data can be
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transmitted and may be received if the receive filters have also been enabled.
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Note: If multiple MNP child driver instances will receive the same packet
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because of overlapping receive filter settings, then the first MNP child
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driver instance will receive the original packet and additional instances will
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receive copies of the original packet.
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Note: Warning: Receive filter settings that overlap will consume extra
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processor and/or DMA resources and degrade system and network performance.
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@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
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@param[in] MnpConfigData Pointer to configuration data that will be assigned
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to the MNP child driver instance. If NULL, the MNP
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child driver instance is reset to startup defaults
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and all pending transmit and receive requests are
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flushed. Type EFI_MANAGED_NETWORK_CONFIG_DATA is
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defined in EFI_MANAGED_NETWORK_PROTOCOL.GetModeData().
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@retval EFI_SUCCESS The operation completed successfully.
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@retval EFI_INVALID_PARAMETER One or more of the following conditions is
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* MnpConfigData.ProtocolTypeFilter is not
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The operational data for the MNP child driver
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instance is unchanged.
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@retval EFI_OUT_OF_RESOURCES Required system resources (usually memory)
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could not be allocated.
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The MNP child driver instance has been reset to
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@retval EFI_UNSUPPORTED The requested feature is unsupported in
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this [MNP] implementation. The operational data
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for the MNP child driver instance is unchanged.
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@retval EFI_DEVICE_ERROR An unexpected network or system error
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occurred. The MNP child driver instance has
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been reset to startup defaults.
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@retval Others The MNP child driver instance has been reset to
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IN EFI_MANAGED_NETWORK_PROTOCOL *This,
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IN EFI_MANAGED_NETWORK_CONFIG_DATA *MnpConfigData OPTIONAL
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Translates an IP multicast address to a hardware (MAC) multicast address. This
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function may be unsupported in some MNP implementations.
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The McastIpToMac() function translates an IP multicast address to a hardware
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(MAC) multicast address. This function may be implemented by calling the
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underlying EFI_SIMPLE_NETWORK. MCastIpToMac() function, which may also be
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unsupported in some MNP implementations.
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@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
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@param[in] Ipv6Flag Set to TRUE to if IpAddress is an IPv6 multicast address.
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Set to FALSE if IpAddress is an IPv4 multicast address.
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@param[in] IpAddress Pointer to the multicast IP address (in network byte
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@param[out] MacAddress Pointer to the resulting multicast MAC address.
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@retval EFI_SUCCESS The operation completed successfully.
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@retval EFI_INVALID_PARAMETER One of the following conditions is TRUE:
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* IpAddress is not a valid multicast IP
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* MacAddress is NULL.
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@retval EFI_NOT_STARTED This MNP child driver instance has not been
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@retval EFI_UNSUPPORTED The requested feature is unsupported in this
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@retval EFI_DEVICE_ERROR An unexpected network or system error occurred.
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@retval Others The address could not be converted.
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IN EFI_MANAGED_NETWORK_PROTOCOL *This,
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IN EFI_IP_ADDRESS *IpAddress,
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OUT EFI_MAC_ADDRESS *MacAddress
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Enables and disables receive filters for multicast address. This function may
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be unsupported in some MNP implementations.
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The Groups() function only adds and removes multicast MAC addresses from the
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filter list. The MNP driver does not transmit or process Internet Group
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Management Protocol (IGMP) packets. If JoinFlag is FALSE and MacAddress is
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NULL, then all joined groups are left.
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@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
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@param[in] JoinFlag Set to TRUE to join this multicast group.
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Set to FALSE to leave this multicast group.
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@param[in] MacAddress Pointer to the multicast MAC group (address) to join or
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@retval EFI_SUCCESS The requested operation completed successfully.
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@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
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* JoinFlag is TRUE and MacAddress is NULL.
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* MacAddress is not a valid multicast MAC
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* The MNP multicast group settings are
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@retval EFI_NOT_STARTED This MNP child driver instance has not been
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@retval EFI_ALREADY_STARTED The supplied multicast group is already joined.
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@retval EFI_NOT_FOUND The supplied multicast group is not joined.
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@retval EFI_DEVICE_ERROR An unexpected network or system error occurred.
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The MNP child driver instance has been reset to
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@retval EFI_UNSUPPORTED The requested feature is unsupported in this MNP
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@retval Others The requested operation could not be completed.
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The MNP multicast group settings are unchanged.
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IN EFI_MANAGED_NETWORK_PROTOCOL *This,
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IN EFI_MAC_ADDRESS *MacAddress OPTIONAL
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Places asynchronous outgoing data packets into the transmit queue.
672
The Transmit() function places a completion token into the transmit packet
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queue. This function is always asynchronous.
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The caller must fill in the Token.Event and Token.TxData fields in the
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completion token, and these fields cannot be NULL. When the transmit operation
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completes, the MNP updates the Token.Status field and the Token.Event is
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Note: There may be a performance penalty if the packet needs to be
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defragmented before it can be transmitted by the network device. Systems in
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which performance is critical should review the requirements and features of
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the underlying communications device and drivers.
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@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
685
@param[in] Token Pointer to a token associated with the transmit data
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descriptor. Type EFI_MANAGED_NETWORK_COMPLETION_TOKEN
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is defined in "Related Definitions" below.
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@retval EFI_SUCCESS The transmit completion token was cached.
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@retval EFI_NOT_STARTED This MNP child driver instance has not been
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@retval EFI_INVALID_PARAMETER One or more of the following conditions is
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* Token.Event is NULL.
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* Token.TxData is NULL.
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* Token.TxData.DestinationAddress is not
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NULL and Token.TxData.HeaderLength is zero.
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* Token.TxData.FragmentCount is zero.
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* (Token.TxData.HeaderLength +
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Token.TxData.DataLength) is not equal to the
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Token.TxData.FragmentTable[].FragmentLength
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Token.TxData.FragmentTable[].FragmentLength
710
Token.TxData.FragmentTable[].FragmentBufferfields
712
* Token.TxData.DataLength is greater than MTU.
713
@retval EFI_ACCESS_DENIED The transmit completion token is already in the
715
@retval EFI_OUT_OF_RESOURCES The transmit data could not be queued due to a
716
lack of system resources (usually memory).
717
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
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The MNP child driver instance has been reset to
720
@retval EFI_NOT_READY The transmit request could not be queued because
721
the transmit queue is full.
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IN EFI_MANAGED_NETWORK_PROTOCOL *This,
728
IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token
732
Aborts an asynchronous transmit or receive request.
734
The Cancel() function is used to abort a pending transmit or receive request.
735
If the token is in the transmit or receive request queues, after calling this
736
function, Token.Status will be set to EFI_ABORTED and then Token.Event will be
737
signaled. If the token is not in one of the queues, which usually means that
738
the asynchronous operation has completed, this function will not signal the
739
token and EFI_NOT_FOUND is returned.
741
@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
742
@param[in] Token Pointer to a token that has been issued by
743
EFI_MANAGED_NETWORK_PROTOCOL.Transmit() or
744
EFI_MANAGED_NETWORK_PROTOCOL.Receive(). If NULL, all
745
pending tokens are aborted.
747
@retval EFI_SUCCESS The asynchronous I/O request was aborted and
748
Token.Event was signaled. When Token is NULL,
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all pending requests were aborted and their
750
events were signaled.
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@retval EFI_NOT_STARTED This MNP child driver instance has not been
753
@retval EFI_INVALID_PARAMETER This is NULL.
754
@retval EFI_NOT_FOUND When Token is not NULL, the asynchronous I/O
755
request was not found in the transmit or
756
receive queue. It has either completed or was
757
not issued by Transmit() and Receive().
763
IN EFI_MANAGED_NETWORK_PROTOCOL *This,
764
IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token OPTIONAL
768
Places an asynchronous receiving request into the receiving queue.
770
The Receive() function places a completion token into the receive packet
771
queue. This function is always asynchronous.
772
The caller must fill in the Token.Event field in the completion token, and
773
this field cannot be NULL. When the receive operation completes, the MNP
774
updates the Token.Status and Token.RxData fields and the Token.Event is
777
@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
778
@param[in] Token Pointer to a token associated with the receive
779
data descriptor. Type
780
EFI_MANAGED_NETWORK_COMPLETION_TOKEN is defined in
781
EFI_MANAGED_NETWORK_PROTOCOL.Transmit().
783
@retval EFI_SUCCESS The receive completion token was cached.
784
@retval EFI_NOT_STARTED This MNP child driver instance has not been
786
@retval EFI_INVALID_PARAMETER One or more of the following conditions is
790
* Token.Event is NULL
791
@retval EFI_OUT_OF_RESOURCES The transmit data could not be queued due to a
792
lack of system resources (usually memory).
793
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred.
794
The MNP child driver instance has been reset to
796
@retval EFI_ACCESS_DENIED The receive completion token was already in the
798
@retval EFI_NOT_READY The receive request could not be queued because
799
the receive queue is full.
805
IN EFI_MANAGED_NETWORK_PROTOCOL *This,
806
IN EFI_MANAGED_NETWORK_COMPLETION_TOKEN *Token
810
Polls for incoming data packets and processes outgoing data packets.
812
The Poll() function can be used by network drivers and applications to
813
increase the rate that data packets are moved between the communications
814
device and the transmit and receive queues.
815
Normally, a periodic timer event internally calls the Poll() function. But, in
816
some systems, the periodic timer event may not call Poll() fast enough to
817
transmit and/or receive all data packets without missing packets. Drivers and
818
applications that are experiencing packet loss should try calling the Poll()
821
@param[in] This Pointer to the EFI_MANAGED_NETWORK_PROTOCOL instance.
823
@retval EFI_SUCCESS Incoming or outgoing data was processed.
824
@retval EFI_NOT_STARTED This MNP child driver instance has not been
826
@retval EFI_DEVICE_ERROR An unexpected system or network error occurred. The
827
MNP child driver instance has been reset to startup
829
@retval EFI_NOT_READY No incoming or outgoing data was processed. Consider
830
increasing the polling rate.
831
@retval EFI_TIMEOUT Data was dropped out of the transmit and/or receive
832
queue. Consider increasing the polling rate.
838
IN EFI_MANAGED_NETWORK_PROTOCOL *This
842
Configure the Snp receive filters according to the instances' receive filter
845
@param[in] MnpDeviceData Pointer to the mnp device context data.
847
@retval EFI_SUCCESS The receive filters is configured.
848
@retval EFI_OUT_OF_RESOURCES The receive filters can't be configured due
849
to lack of memory resource.
853
MnpConfigReceiveFilters (
854
IN MNP_DEVICE_DATA *MnpDeviceData