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Improve PXE Over IPv4 performance: 

1. Stop UdpWrite instance upon return from EfiPxeBcUdpWrite() to avoid mass pkgs enqueue to this useless instance in Udp layer.
2. Enhance Udp timeout logic to prevent the worst case happen, and set PxeUdp instance to 50ms to avoid enqueue mass pkgs in background.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10861 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
hhuan13 2010-09-09 09:30:19 +00:00
parent f3e699088b
commit 2e4c2a049b
3 changed files with 18 additions and 14 deletions
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2
MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Impl.c
View File

@ -431,7 +431,7 @@ Udp4CheckTimeout (
//
// TimeoutTick unit is microsecond, MNP_TIMEOUT_CHECK_INTERVAL unit is 100ns.
//
if (Wrap->TimeoutTick <= (UDP4_TIMEOUT_INTERVAL / 10)) {
if (Wrap->TimeoutTick < (UDP4_TIMEOUT_INTERVAL / 10)) {
//
// Remove this RxData if it timeouts.
//

28
MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
View File

@ -1407,20 +1407,20 @@ EfiPxeBcUdpWrite (
if (SrcPort != NULL) {
Private->CurrentUdpSrcPort = *SrcPort;
}
Status = PxeBcConfigureUdpWriteInstance (
Udp4,
&Private->StationIp.v4,
&Private->SubnetMask.v4,
&Private->GatewayIp.v4,
&Private->CurrentUdpSrcPort
);
if (EFI_ERROR (Status)) {
Private->CurrentUdpSrcPort = 0;
return EFI_INVALID_PARAMETER;
}
}
Status = PxeBcConfigureUdpWriteInstance (
Udp4,
&Private->StationIp.v4,
&Private->SubnetMask.v4,
&Private->GatewayIp.v4,
&Private->CurrentUdpSrcPort
);
if (EFI_ERROR (Status)) {
Private->CurrentUdpSrcPort = 0;
return EFI_INVALID_PARAMETER;
}
ZeroMem (&Token, sizeof (EFI_UDP4_COMPLETION_TOKEN));
ZeroMem (&Udp4Session, sizeof (EFI_UDP4_SESSION_DATA));
@ -1492,6 +1492,10 @@ ON_EXIT:
FreePool (Udp4TxData);
//
// Reset the instance.
//
Udp4->Configure (Udp4, NULL);
return Status;
}

2
MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
View File

@ -53,7 +53,7 @@ typedef struct _PXEBC_PRIVATE_DATA PXEBC_PRIVATE_DATA;
#define PXEBC_DEFAULT_UDP_OVERHEAD_SIZE 8
#define PXEBC_DEFAULT_TFTP_OVERHEAD_SIZE 4
#define PXEBC_DEFAULT_PACKET_SIZE 1480
#define PXEBC_DEFAULT_LIFETIME 2000000 // 2 seconds, unit is microsecond
#define PXEBC_DEFAULT_LIFETIME 50000 // 50ms, unit is microsecond
struct _PXEBC_PRIVATE_DATA {
UINT32 Signature;