Michael Brown 6164741f81 [efi] Guard against GetStatus() failing to return a NULL TX buffer ...

The UEFI specification requires the EFI_SIMPLE_NETWORK_PROTOCOL
GetStatus() method to set TxBuf to NULL if there are no transmit
buffers to recycle.

Some implementations (observed with Lan9118Dxe in EDK2) fill in TxBuf
only when there is a transmit buffer to recycle, which leads to large
numbers of "spurious TX completion" errors.

Work around this problem by initialising TxBuf to NULL before calling
the GetStatus() method.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

2016-05-11 23:02:10 +01:00

..

nii.c

[efi] Remove raw EFI_HANDLE values from debug messages

2015-08-27 15:40:44 +01:00

nii.h

[legal] Relicense files under GPL2_OR_LATER_OR_UBDL

2015-03-02 14:17:31 +00:00

snp.c

[efi] Remove raw EFI_HANDLE values from debug messages

2015-08-27 15:40:44 +01:00

snpnet.c

[efi] Guard against GetStatus() failing to return a NULL TX buffer

2016-05-11 23:02:10 +01:00

snpnet.h

[efi] Rewrite SNP NIC driver

2014-07-08 14:01:55 +01:00

snponly.c

[efi] Remove raw EFI_HANDLE values from debug messages

2015-08-27 15:40:44 +01:00