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MdeModulePkg/Ip4Dxe: Add an independent timer for reconfig checking

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* Since wireless network can switch at very short time, the time interval
  of reconfig event checking is too long for this case. To achieve better
  performance and scalability, separate this task from Ip4 tick timer.

Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Fu Siyuan <siyuan.fu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wang Fan <fan.wang@intel.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
(cherry picked from commit 018432f0ce)
This commit is contained in:
Wang Fan
2018-01-11 15:28:41 +08:00
committed by Jiaxin Wu
parent 07dce6fb78
commit 0f63da7c61
3 changed files with 83 additions and 22 deletions
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47
MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.c
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@@ -1,6 +1,6 @@
/** @file
Copyright (c) 2005 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
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
@@ -2231,18 +2231,10 @@ Ip4SentPacketTicking (
return EFI_SUCCESS;
}
/**
There are two steps for this the heart beat timer of IP4 service instance.
First, it times out all of its IP4 children's received-but-not-delivered
and transmitted-but-not-recycle packets, and provides time input for its
IGMP protocol.
Second, a dedicated timer is used to poll underlying media status. In case
of cable swap, a new round auto configuration will be initiated. The timer
will signal the IP4 to run DHCP configuration again. IP4 driver will free
old IP address related resource, such as route table and Interface, then
initiate a DHCP process to acquire new IP, eventually create route table
for new IP address.
This heart beat timer of IP4 service instance times out all of its IP4 children's
received-but-not-delivered and transmitted-but-not-recycle packets, and provides
time input for its IGMP protocol.
@param[in] Event The IP4 service instance's heart beat timer.
@param[in] Context The IP4 service instance.
@@ -2256,6 +2248,34 @@ Ip4TimerTicking (
)
{
IP4_SERVICE *IpSb;
IpSb = (IP4_SERVICE *) Context;
NET_CHECK_SIGNATURE (IpSb, IP4_SERVICE_SIGNATURE);
Ip4PacketTimerTicking (IpSb);
Ip4IgmpTicking (IpSb);
}
/**
This dedicated timer is used to poll underlying network media status. In case
of cable swap or wireless network switch, a new round auto configuration will
be initiated. The timer will signal the IP4 to run DHCP configuration again.
IP4 driver will free old IP address related resource, such as route table and
Interface, then initiate a DHCP process to acquire new IP, eventually create
route table for new IP address.
@param[in] Event The IP4 service instance's heart beat timer.
@param[in] Context The IP4 service instance.
**/
VOID
EFIAPI
Ip4TimerReconfigChecking (
IN EFI_EVENT Event,
IN VOID *Context
)
{
IP4_SERVICE *IpSb;
BOOLEAN OldMediaPresent;
EFI_STATUS Status;
EFI_SIMPLE_NETWORK_MODE SnpModeData;
@@ -2265,9 +2285,6 @@ Ip4TimerTicking (
OldMediaPresent = IpSb->MediaPresent;
Ip4PacketTimerTicking (IpSb);
Ip4IgmpTicking (IpSb);
//
// Get fresh mode data from MNP, since underlying media status may change.
// Here, it needs to mention that the MediaPresent can also be checked even if