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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7138 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jgong5
2008-12-26 09:09:02 +00:00
parent d17371e86b
commit cab450ccda
2 changed files with 174 additions and 91 deletions
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101
MdeModulePkg/Library/DxeUdpIoLib/DxeUdpIoLib.c
View File

@ -4,7 +4,7 @@
Copyright (c) 2005 - 2007, Intel Corporation.<BR>
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
which accompanies this distribution. The full text of the license may be found at<BR>
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
@ -24,7 +24,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
/**
Free a UDP_TX_TOKEN. The event is closed and memory released.
Free a UDP_TX_TOKEN. The TX event is closed.
@param Token The UDP_TX_TOKEN to release.
@ -39,9 +39,9 @@ UdpIoFreeTxToken (
}
/**
Free a receive request wrap.
Free a UDP_RX_TOKEN. The RX event is closed.
@param Token The receive request to release.
@param Token The UDP_RX_TOKEN to release.
**/
VOID
@ -55,8 +55,9 @@ UdpIoFreeRxToken (
/**
The callback function when the packet is sent by UDP.
It will remove the packet from the local list then call
the packet owner's callback function.
the packet owner's callback function set by UdpIoSendDatagram.
@param Context The UDP TX Token.
@ -117,8 +118,9 @@ UdpIoRecycleDgram (
}
/**
The event handle for UDP receive request. It will build
a NET_BUF from the recieved UDP data, then deliver it
The event handle for UDP receive request.
It will build a NET_BUF from the recieved UDP data, then deliver it
to the receiver.
@param Context The UDP RX token.
@ -363,12 +365,15 @@ UdpIoWrapTx (
return Token;
}
/**
Create a UDP IO port to access the UDP service. It will
create and configure a UDP child.
Create a UDP_IO_PORT to access the UDP service. It will create and configure
a UDP child.
The function will locate the UDP service binding prototype on the Controller
parameter and use it to create a UDP child (aka Udp instance). Then the UDP
child will be configured by calling Configure function prototype. Any failures
in creating or configure the UDP child will lead to the failure of UDP_IO_PORT
creation.
@param Controller The controller that has the UDP service binding
protocol installed.
@ -376,7 +381,7 @@ UdpIoWrapTx (
@param Configure The function to configure the created UDP child
@param Context The opaque parameter for the Configure funtion.
@return A point to just created UDP IO port or NULL if some error happened.
@return Newly-created UDP_IO_PORT or NULL if failed.
**/
UDP_IO_PORT *
@ -465,12 +470,11 @@ FREE_MEM:
return NULL;
}
/**
Cancel all the sent datagram that pass the selection of ToCancel.
Cancel all the sent datagram that pass the selection criteria of ToCancel.
If ToCancel is NULL, all the datagrams are cancelled.
@param UdpIo The UDP IO port to cancel packet
@param UdpIo The UDP_IO_PORT to cancel packet
@param IoStatus The IoStatus to return to the packet owners.
@param ToCancel The select funtion to test whether to cancel this
packet or not.
@ -498,14 +502,14 @@ UdpIoCancelDgrams (
}
}
/**
Free the UDP IO port and all its related resources including
all the transmitted packet.
Free the UDP_IO_PORT and all its related resources.
The function will cancel all sent datagram and receive request.
@param UdpIo The UDP IO port to free.
@param UdpIo The UDP_IO_PORT to free.
@retval EFI_SUCCESS The UDP IO port is freed.
@retval EFI_SUCCESS The UDP_IO_PORT is freed.
**/
EFI_STATUS
@ -557,11 +561,13 @@ UdpIoFreePort (
/**
Clean up the UDP IO port. It will release all the transmitted
datagrams and receive request. It will also configure NULL the
UDP child.
Clean up the UDP_IO_PORT without freeing it. The function is called when
user wants to re-use the UDP_IO_PORT later.
It will release all the transmitted datagrams and receive request. It will
also configure NULL for the UDP instance.
@param UdpIo UDP IO port to clean up.
@param UdpIo The UDP_IO_PORT to clean up.
**/
VOID
@ -585,15 +591,20 @@ UdpIoCleanPort (
}
/**
Send a packet through the UDP IO port.
Send a packet through the UDP_IO_PORT.
The packet will be wrapped in UDP_TX_TOKEN. Function Callback will be called
when the packet is sent. The optional parameter EndPoint overrides the default
address pair if specified.
@param UdpIo The UDP IO Port to send the packet through
@param UdpIo The UDP_IO_PORT to send the packet through
@param Packet The packet to send
@param EndPoint The local and remote access point
@param EndPoint The local and remote access point. Override the
default address pair set during configuration.
@param Gateway The gateway to use
@param CallBack The call back function to call when packet is
@param CallBack The function being called when packet is
transmitted or failed.
@param Context The opque parameter to the CallBack
@param Context The opaque parameter passed to CallBack
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the packet
@retval EFI_SUCCESS The packet is successfully delivered to UDP for
@ -637,10 +648,10 @@ UdpIoSendDatagram (
/**
The selection function to cancel a single sent datagram.
The select function to cancel a single sent datagram.
@param Token The UDP TX token to test againist.
@param Context The context
@param Token The UDP_TX_TOKEN to test against
@param Context The NET_BUF of the sent datagram
@retval TRUE The packet is to be cancelled.
@retval FALSE The packet is not to be cancelled.
@ -662,11 +673,10 @@ UdpIoCancelSingleDgram (
return FALSE;
}
/**
Cancel a single sent datagram.
@param UdpIo The UDP IO port to cancel the packet from
@param UdpIo The UDP_IO_PORT to cancel the packet from
@param Packet The packet to cancel
**/
@ -681,17 +691,22 @@ UdpIoCancelSentDatagram (
}
/**
Issue a receive request to the UDP IO port.
Issue a receive request to the UDP_IO_PORT.
This function is called when upper-layer needs packet from UDP for processing.
Only one receive request is acceptable at a time so a common usage model is
to invoke this function inside its Callback function when the former packet
is processed.
@param UdpIo The UDP IO port to recieve the packet from.
@param CallBack The call back function to execute when receive
finished.
@param Context The opque context to the call back
@param HeadLen The lenght of the application's header
@param UdpIo The UDP_IO_PORT to receive the packet from.
@param CallBack The call back function to execute when the packet
is received.
@param Context The opaque context passed to Callback
@param HeadLen The length of the upper-layer's protocol header
@retval EFI_ALREADY_STARTED There is already a pending receive request. Only
one receive request is supported.
@retval EFI_OUT_OF_RESOURCES Failed to allocate some resource.
one receive request is supported at a time.
@retval EFI_OUT_OF_RESOURCES Failed to allocate needed resources.
@retval EFI_SUCCESS The receive request is issued successfully.
**/