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NetworkPkg/SnpDxe: Shutdown SnpDxe on BeforeExitBootServices Event. #6010

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NetworkPkg/SnpDxe: Shutdown SnpDxe on BeforeExitBootServices Event. #6010

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Commits on Sep 19, 2024

  1. NetworkPkg/SnpDxe: Shutdown SnpDxe on BeforeExitBootServices Event. 

    SnpDxe registers for an ExitBootServices callback and runs the
PXE_OPCODE_SHUTDOWN and PXE_OPCODE_STOP commands for any network
controllers that the driver is attached to.

Register the SnpDxe callback for gEfiEventBeforeExitBootServicesGuid
instead of gEfiEventExitBootServicesGuid to ensure the correct ordering:

1. ExitBootServices event
2. Network card shutdown sequence is completed

Also, close the event to prevent rerunning the shutdown if multiple
ExitBootServices events need to be called by the OS.

Signed-off-by: Aaron Pop <[email protected]>
    @JoeLopez333 @apop5
    JoeLopez333 authored and apop5 committed Sep 19, 2024
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