diff options
Diffstat (limited to 'EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_igmp.c')
| -rw-r--r-- | EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_igmp.c | 462 |
1 files changed, 0 insertions, 462 deletions
diff --git a/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_igmp.c b/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_igmp.c deleted file mode 100644 index 22dcf25524..0000000000 --- a/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_igmp.c +++ /dev/null @@ -1,462 +0,0 @@ -/*++
-
-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.
-
---*/
-
-
-
-
-#define RAND_MAX 0x10000
-#include "Bc.h"
-
-//
-// Definitions for internet group management protocol version 2 message
-// structure Per RFC 2236, November 1997
-//
-STATIC UINT8 RouterAlertOption[4] = { 0x80 | 20, 4, 0, 0 };
-STATIC IPV4_ADDR AllRoutersGroup = { { 224, 0, 0, 2 } };
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-STATIC
-VOID
-ClearGroupTimer (
- PXE_BASECODE_DEVICE *Private,
- UINTN TimerId
- )
-{
- if (Private == NULL) {
- return ;
- }
-
- if (TimerId >= Private->MCastGroupCount) {
- return ;
- }
-
- if (Private->IgmpGroupEvent[TimerId] == NULL) {
- return ;
- }
-
- gBS->CloseEvent (Private->IgmpGroupEvent[TimerId]);
- Private->IgmpGroupEvent[TimerId] = NULL;
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-STATIC
-VOID
-SetGroupTimer (
- PXE_BASECODE_DEVICE *Private,
- UINTN TimerId,
- UINTN MaxRespTime
- )
-/*++
-Routine description:
- Set IGMP response timeout value.
-
-Parameters:
- Private := Pointer to PxeBc interface
- TimerId := Timer ID#
- MaxRespTime := Base response timeout value in tenths of seconds
-
-Returns:
---*/
-{
- EFI_STATUS EfiStatus;
-
- if (Private == NULL) {
- return ;
- }
-
- if (TimerId >= Private->MCastGroupCount) {
- return ;
- }
-
- if (Private->IgmpGroupEvent[TimerId] != NULL) {
- gBS->CloseEvent (Private->IgmpGroupEvent[TimerId]);
- }
-
- EfiStatus = gBS->CreateEvent (
- EVT_TIMER,
- TPL_CALLBACK,
- NULL,
- NULL,
- &Private->IgmpGroupEvent[TimerId]
- );
-
- if (EFI_ERROR (EfiStatus)) {
- Private->IgmpGroupEvent[TimerId] = NULL;
- return ;
- }
-
- EfiStatus = gBS->SetTimer (
- Private->IgmpGroupEvent[TimerId],
- TimerRelative,
- MaxRespTime * 1000000 + Random (Private) % RAND_MAX
- );
-
- if (EFI_ERROR (EfiStatus)) {
- gBS->CloseEvent (Private->IgmpGroupEvent[TimerId]);
- Private->IgmpGroupEvent[TimerId] = NULL;
- }
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-STATIC
-VOID
-SendIgmpMessage (
- PXE_BASECODE_DEVICE *Private,
- UINT8 Type,
- INTN GroupId
- )
-/*++
-Routine description:
- Send an IGMP message
-
-Parameters:
- Private := Pointer to PxeBc interface
- Type := Message type opcode
- GroupId := Group ID#
-
-Returns:
---*/
-{
- Private->IgmpMessage.Type = Type;
- Private->IgmpMessage.MaxRespTime = 0;
- Private->IgmpMessage.Checksum = 0;
- Private->IgmpMessage.GroupAddress = Private->MCastGroup[GroupId];
- Private->IgmpMessage.Checksum = IpChecksum (
- (UINT16 *) &Private->IgmpMessage,
- sizeof Private->IgmpMessage
- );
-
- Ipv4SendWOp (
- Private,
- 0,
- (UINT8 *) &Private->IgmpMessage,
- sizeof Private->IgmpMessage,
- PROT_IGMP,
- RouterAlertOption,
- sizeof RouterAlertOption,
- ((Type == IGMP_TYPE_LEAVE_GROUP) ? AllRoutersGroup.L : Private->IgmpMessage.GroupAddress),
- EFI_PXE_BASE_CODE_FUNCTION_IGMP
- );
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-STATIC
-VOID
-ReportIgmp (
- PXE_BASECODE_DEVICE *Private,
- INTN GroupId
- )
-/*++
-Routine description:
- Send an IGMP report message.
-
-Parameters:
- Private := Pointer to PxeBc interface
- GroupId := Group ID#
-
-Returns:
---*/
-{
- //
- // if version 1 querier, send v1 report
- //
- UINT8 Type;
-
- if (Private->Igmpv1TimeoutEvent != NULL) {
- if (!EFI_ERROR (gBS->CheckEvent (Private->Igmpv1TimeoutEvent))) {
- gBS->CloseEvent (Private->Igmpv1TimeoutEvent);
- Private->Igmpv1TimeoutEvent = NULL;
- Private->UseIgmpv1Reporting = TRUE;
- }
- }
-
- Type = (UINT8) (Private->UseIgmpv1Reporting ? IGMP_TYPE_V1REPORT : IGMP_TYPE_REPORT);
-
- SendIgmpMessage (Private, Type, GroupId);
- ClearGroupTimer (Private, GroupId);
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-VOID
-IgmpCheckTimers (
- PXE_BASECODE_DEVICE *Private
- )
-/*++
-Routine description:
- Check IGMP timers and send reports for all groups that have expired.
-Parameters:
- Private := Pointer to PxeBc interface
-
-Returns:
---*/
-{
- UINTN GroupId;
-
- if (Private == NULL) {
- return ;
- }
-
- for (GroupId = 0; GroupId < Private->MCastGroupCount; ++GroupId) {
- if (Private->IgmpGroupEvent[GroupId] == NULL) {
- continue;
- }
-
- if (!EFI_ERROR (gBS->CheckEvent (Private->IgmpGroupEvent[GroupId]))) {
- //
- // send a report
- //
- ReportIgmp (Private, GroupId);
- }
- }
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-STATIC
-INTN
-FindMulticastGroup (
- PXE_BASECODE_DEVICE *Private,
- UINT32 GroupAddress
- )
-/*++
-Routine description:
- Fund group ID# (index).
-
-Parameters:
- Private := Pointer to PxeBc interface
- GroupAddress := Group multicast address
-
-Returns:
- 0 := Group not found
- other := Group ID#
---*/
-{
- UINTN GroupId;
-
- for (GroupId = 0; GroupId < Private->MCastGroupCount; ++GroupId) {
- if (Private->MCastGroup[GroupId] == GroupAddress) {
- return GroupId + 1;
- }
- }
-
- return 0;
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-VOID
-IgmpJoinGroup (
- PXE_BASECODE_DEVICE *Private,
- EFI_IP_ADDRESS *GroupPtr
- )
-/*++
-Routine description:
- Join multicast group.
-
-Parameters:
- Private := Pointer to PxeBc interface
- GroupPtr := Pointer to group mutlicast IP address.
-
-Returns:
---*/
-{
- UINT32 Grp;
-
- Grp = *(UINT32 *) GroupPtr;
-
- //
- // see if we already have it or if we can't take anymore
- //
- if (FindMulticastGroup (Private, Grp) || Private->MCastGroupCount == MAX_MCAST_GROUPS) {
- return ;
- }
- //
- // add the group
- //
- Private->MCastGroup[Private->MCastGroupCount] = Grp;
-
- ReportIgmp (Private, Private->MCastGroupCount);
- //
- // send a report
- // so it will get sent again per RFC 2236
- //
- SetGroupTimer (
- Private,
- Private->MCastGroupCount++,
- UNSOLICITED_REPORT_INTERVAL * 10
- );
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-VOID
-IgmpLeaveGroup (
- PXE_BASECODE_DEVICE *Private,
- EFI_IP_ADDRESS *GroupPtr
- )
-/*++
-Routine description:
- Leave multicast group.
-
-Parameters:
- Private := Pointer to PxeBc interface
- GroupPtr := Mutlicast group IP address.
-
-Returns:
---*/
-{
- UINT32 Grp;
- UINTN GroupId;
-
- Grp = *(UINT32 *) GroupPtr;
-
- //
- // if not in group, ignore
- //
- GroupId = FindMulticastGroup (Private, Grp);
-
- if (GroupId == 0) {
- return ;
- }
- //
- // if not v1 querrier, send leave group IGMP message
- //
- if (Private->Igmpv1TimeoutEvent != NULL) {
- if (!EFI_ERROR (gBS->CheckEvent (Private->Igmpv1TimeoutEvent))) {
- gBS->CloseEvent (Private->Igmpv1TimeoutEvent);
- Private->Igmpv1TimeoutEvent = NULL;
- Private->UseIgmpv1Reporting = TRUE;
- } else {
- SendIgmpMessage (Private, IGMP_TYPE_LEAVE_GROUP, GroupId - 1);
- }
- }
-
- while (GroupId < Private->MCastGroupCount) {
- Private->MCastGroup[GroupId - 1] = Private->MCastGroup[GroupId];
- Private->IgmpGroupEvent[GroupId - 1] = Private->IgmpGroupEvent[GroupId];
- ++GroupId;
- }
-
- --Private->MCastGroupCount;
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-VOID
-HandleIgmp (
- PXE_BASECODE_DEVICE *Private,
- IGMPV2_MESSAGE *IgmpMessagePtr,
- UINTN IgmpLength
- )
-/*++
-Routine description:
- Handle received IGMP packet
-
-Parameters:
- Private := Pointer to PxeBc interface
- IgmpMessagePtr := Pointer to IGMP packet
- IgmpLength := packet length in bytes
-
-Returns:
---*/
-{
- EFI_STATUS EfiStatus;
- UINTN GroupId;
- INTN MaxRespTime;
-
- if (Private == NULL) {
- return ;
- }
-
- if (Private->MCastGroupCount == 0) {
- //
- // if we don't belong to any multicast groups, ignore
- //
- return ;
- }
- //
- // verify checksum
- //
- if (IpChecksum ((UINT16 *) IgmpMessagePtr, IgmpLength)) {
- //
- // bad checksum - ignore packet
- //
- return ;
- }
-
- switch (IgmpMessagePtr->Type) {
- case IGMP_TYPE_QUERY:
- //
- // if a version 1 querier, note the fact and set max resp time
- //
- MaxRespTime = IgmpMessagePtr->MaxRespTime;
-
- if (MaxRespTime == 0) {
- Private->UseIgmpv1Reporting = TRUE;
-
- if (Private->Igmpv1TimeoutEvent != NULL) {
- gBS->CloseEvent (Private->Igmpv1TimeoutEvent);
- }
-
- EfiStatus = gBS->CreateEvent (
- EVT_TIMER,
- TPL_CALLBACK,
- NULL,
- NULL,
- &Private->Igmpv1TimeoutEvent
- );
-
- if (EFI_ERROR (EfiStatus)) {
- Private->Igmpv1TimeoutEvent = NULL;
- } else {
- EfiStatus = gBS->SetTimer (
- Private->Igmpv1TimeoutEvent,
- TimerRelative,
- (UINT64) V1ROUTER_PRESENT_TIMEOUT * 10000000
- );
- }
-
- MaxRespTime = IGMP_DEFAULT_MAX_RESPONSE_TIME * 10;
- }
- //
- // if a general query (!GroupAddress), set all our group timers
- //
- if (!IgmpMessagePtr->GroupAddress) {
- for (GroupId = 0; GroupId < Private->MCastGroupCount; ++GroupId) {
- SetGroupTimer (Private, GroupId, MaxRespTime);
- }
- } else {
- //
- // specific query - set only specific group
- //
- GroupId = FindMulticastGroup (Private, IgmpMessagePtr->GroupAddress);
-
- if (GroupId != 0) {
- SetGroupTimer (Private, GroupId - 1, MaxRespTime);
- }
- }
-
- break;
-
- //
- // if we have a timer running for this group, clear it
- //
- case IGMP_TYPE_V1REPORT:
- case IGMP_TYPE_REPORT:
- GroupId = FindMulticastGroup (Private, IgmpMessagePtr->GroupAddress);
-
- if (GroupId != 0) {
- ClearGroupTimer (Private, GroupId - 1);
- }
-
- break;
- }
-}
-
-/* EOF - pxe_bc_igmp.c */
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