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We currently treat network devices as available for use via the SNP API only if RX queue processing has been frozen. (This is similar in spirit to the way that RX queue processing is frozen for the network device currently exposed via the PXE API.) The default state of a freshly created network device is for the RX queue to not be frozen, and thus to be unavailable for use via SNP. This causes problems when devices are added through code paths other than _efidrv_start() (which explicitly releases devices for use via SNP). We don't actually need to freeze RX queue processing, since calls via the SNP API will always use netdev_poll() rather than net_poll(), and so will never trigger the RX queue processing code path anyway. We can therefore simplify the code to use a single global flag to indicate whether network devices are claimed for use by iPXE or available for use via SNP. Using a global flag allows the default state for dynamically created network devices to behave sensibly. Signed-off-by: Michael Brown <mcb30@ipxe.org>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/*
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* Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdlib.h>
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#include <ipxe/init.h>
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#include <ipxe/efi/efi.h>
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/**
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* EFI entry point
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*
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* @v image_handle Image handle
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* @v systab System table
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* @ret efirc EFI return status code
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*/
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EFI_STATUS EFIAPI _efidrv_start ( EFI_HANDLE image_handle,
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EFI_SYSTEM_TABLE *systab ) {
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EFI_STATUS efirc;
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/* Initialise EFI environment */
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if ( ( efirc = efi_init ( image_handle, systab ) ) != 0 )
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return efirc;
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/* Initialise iPXE environment */
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initialise();
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startup();
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return 0;
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}
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