sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2025-12-24 15:23:42 +03:00
Code Issues Packages Projects Releases Wiki Activity

[efi] Disable SNP devices when running iPXE as the application

Browse Source 
Some UEFI builds will set up a timer to continuously poll any SNP
devices.  This can drain packets from the network device's receive
queue before iPXE gets a chance to process them.

Use netdev_rx_[un]freeze() to explicitly indicate when we expect our
network devices to be driven via the external SNP API (as we do with
the UNDI API on the standard BIOS build), and disable the SNP API
except when receive queue processing is frozen.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2014-03-14 14:16:05 +00:00
parent f618178e60
commit f473b9c3f6
4 changed files with 138 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/arch/x86/prefix/efidrvprefix.c
View File

@@ -22,6 +22,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <stdlib.h>
#include <ipxe/init.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/efi_snp.h>
/**
* EFI entry point
@@ -42,7 +43,8 @@ EFI_STATUS EFIAPI _efidrv_start ( EFI_HANDLE image_handle,
initialise();
startup();
/* Release network devices for use via SNP */
efi_snp_release();
return 0;
}
REQUIRE_OBJECT ( efi_snp );