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

..

arch

[arm] Add optimised TCP/IP checksumming for 64-bit ARM

2016-05-11 08:16:36 +01:00

bin

Rename .cvsignore files to .gitignore

2007-06-09 22:57:00 +01:00

config

[arm] Add support for 64-bit ARM (Aarch64)

2016-05-08 00:20:20 +01:00

core

[libc] Avoid implicit assumptions about potentially-optimised memcpy()

2016-05-09 16:23:38 +01:00

crypto

[arm] Avoid instruction references to symbols defined via ".equ"

2016-05-08 00:08:48 +01:00

doc

[build] Rename gPXE to iPXE

2010-04-19 23:43:39 +01:00

drivers

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

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

hci

[mucurses] Fix GCC 6 nonnull-compare errors

2016-05-04 16:01:32 +01:00

image

[build] Allow assembler section type character to vary by architecture

2016-03-13 11:20:53 +00:00

include

[legacy] Fix building with GCC 6

2016-05-04 16:01:33 +01:00

interface

[efi] Generalise EFI entropy generation to non-x86 CPUs

2016-05-04 14:34:24 +01:00

libgcc

[libgcc] Provide __divmoddi4()

2016-05-05 23:42:57 +01:00

net

[ethernet] Make LACP support configurable at build time

2016-04-18 10:08:46 +01:00

scripts

[efi] Centralise architecture-independent EFI Makefile and linker script

2016-03-12 21:47:13 +00:00

tests

[bitops] Fix typo in test case

2016-05-05 23:42:57 +01:00

usr

[int13] Allow drive to be hooked using the natural drive number

2016-03-22 09:55:09 +00:00

util

[efi] Allow for building with older versions of elf.h system header

2016-05-09 16:18:10 +01:00

.gitignore

[build] Add support for local configuration files

2010-03-26 19:07:22 +00:00

doxygen.cfg

[build] Remove PACKED macro

2010-05-29 23:49:47 +01:00

Makefile

[build] Remove unnecessary dependency on zlib

2016-05-02 23:09:49 +01:00

Makefile.efi

[efi] Centralise architecture-independent EFI Makefile and linker script

2016-03-12 21:47:13 +00:00

Makefile.housekeeping

[build] Remove unnecessary dependency on zlib

2016-05-02 23:09:49 +01:00