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Stefan Hajnoczi 00b7ade807 rtl8139: flush queued packets when RxBufPtr is written 
Net queues support efficient "receive disable".  For example, tap's file
descriptor will not be polled while its peer has receive disabled.  This
saves CPU cycles for needlessly copying and then dropping packets which
the peer cannot receive.

rtl8139 is missing the qemu_flush_queued_packets() call that wakes the
queue up when receive becomes possible again.

As a result, the Windows 7 guest driver reaches a state where the
rtl8139 cannot receive packets.  The driver has actually refilled the
receive buffer but we never resume reception.

The bug can be reproduced by running a large FTP 'get' inside a Windows
7 guest:

  $ qemu -netdev tap,id=tap0,...
         -device rtl8139,netdev=tap0

The Linux guest driver does not trigger the bug, probably due to a
different buffer management strategy.

Reported-by: Oliver Francke <oliver.francke@filoo.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-05-24 16:34:13 +02:00
audio remove some double-includes 2013-05-18 16:35:12 +04:00
backends rng random backend: check for -EAGAIN errors on read 2013-04-16 16:10:21 -05:00
block Remove twice include of qemu-common.h 2013-05-18 16:35:11 +04:00
bsd-user bsd-user: OS-agnostic 64-bit SYSCTL types 2013-05-12 13:25:55 +04:00
default-configs audio: Enable all cards 2013-05-03 12:04:49 -05:00
disas tcg-arm: Implement division instructions 2013-04-27 02:16:44 +02:00
docs docs: mention AddressSpaces in docs/memory.txt 2013-05-12 13:25:55 +04:00
dtc@bc895d6d09 dtc: add submodule 2013-04-18 13:50:53 +02:00
fpu fpu: Correct edgecase in float64_muladd 2013-04-15 16:06:15 +02:00
fsdev remove double semicolons 2013-05-12 13:25:55 +04:00
gdb-xml
hw rtl8139: flush queued packets when RxBufPtr is written 2013-05-24 16:34:13 +02:00
include Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-05-22 08:22:36 -05:00
ldscripts
libcacard libcacard/cac: change big switch functions to single return point 2013-04-24 11:48:06 +03:00
linux-headers linux-headers: Update to kvm/queue 2013-04-26 23:02:40 +02:00
linux-user Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-05-22 08:22:36 -05:00
net net: support for bridged networking on Mac OS X 2013-05-24 16:33:48 +02:00
pc-bios Merge branch 's390-for-upstream' of git://github.com/agraf/qemu 2013-05-06 19:56:27 +02:00
pixman@97336fad32
po de_DE.po: Add missing leading spaces 2013-05-08 15:28:49 +02:00
qapi qapi: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
qga Merge remote-tracking branch 'mdroth/qga-pull-2013-05-13' into staging 2013-05-17 10:00:30 -05:00
QMP qmp: fix handling of cmd with Equals in qmp-shell 2013-05-15 08:58:43 -04:00
qobject json-parser: fix handling of large whole number values 2013-05-23 09:44:20 -04:00
qom qom/object: Don't poll cast cache for NULL objects 2013-05-22 07:40:09 -05:00
roms pseries: Update SLOF firmware image 2013-05-06 17:22:48 +02:00
scripts qapi: qapi-visit.py, native list support 2013-05-23 09:44:20 -04:00
slirp remove some double-includes 2013-05-18 16:35:12 +04:00
stubs cpu: Introduce cpu_resume(), for single CPU 2013-05-01 13:04:17 +02:00
sysconfigs/target
target-alpha cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-arm target-arm: Fix incorrect check of kvm_vcpu_ioctl return value 2013-05-03 18:47:22 +01:00
target-cris target-cris: Override do_interrupt for pre-v32 CPU cores 2013-04-16 02:45:11 +02:00
target-i386 target-i386: ROR r8/r16 imm instruction fix 2013-05-10 19:59:54 +02:00
target-lm32 hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-m68k cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-microblaze microblaze: Add internal base vectors reg 2013-04-26 11:28:50 +02:00
target-mips linux-user: Save the correct resume address for MIPS signal handling 2013-05-20 18:16:17 +02:00
target-moxie target-moxie: replace target_phys_addr_t with hwaddr 2013-05-18 16:35:12 +04:00
target-openrisc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-ppc remove some double-includes 2013-05-18 16:35:12 +04:00
target-s390x osdep, kvm: rename low-level RAM allocation functions 2013-05-14 08:53:31 -05:00
target-sh4 hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-sparc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-unicore32 cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-xtensa cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
tcg tcg/optimize: fix setcond2 optimization 2013-05-09 16:14:58 +02:00
tests qapi: add native list coverage for QMP input visitor tests 2013-05-23 09:44:21 -04:00
trace trace: Add ftrace tracing backend 2013-05-03 13:58:09 +02:00
ui ui/input.c: replace magic numbers with macros 2013-05-23 09:58:45 -04:00
util Rename hexdump to avoid FreeBSD libutil conflict 2013-05-20 08:20:08 -05:00
.exrc
.gitignore S390: ccw firmware: Add Makefile 2013-04-26 20:18:24 +02:00
.gitmodules dtc: add submodule 2013-04-18 13:50:53 +02:00
.mailmap
aio-posix.c aio: support G_IO_HUP and G_IO_ERR 2013-02-21 16:17:31 -06:00
aio-win32.c aio: Fix return value of aio_poll() 2013-01-17 10:51:42 +01:00
arch_init.c audio: look for the ISA and PCI buses 2013-04-29 12:16:57 -05:00
async.c aio: add a ThreadPool instance to AioContext 2013-03-15 16:07:50 +01:00
balloon.c
block-migration.c migration: run setup callbacks out of big lock 2013-03-11 13:32:01 +01:00
block.c block: Add hint to -EFBIG error message 2013-05-14 16:44:33 +02:00
blockdev-nbd.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
blockdev.c blockdev: Replace "undefined error" in qmp_block_resize 2013-05-03 10:31:58 +02:00
blockjob.c
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog
cmd.c
cmd.h
CODING_STYLE
configure w32: Fix configure test for -march=i486 2013-05-15 08:49:28 -05:00
COPYING
COPYING.LIB
coroutine-gthread.c
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Fix warnings suppressors to honor --disable-werror 2013-04-17 10:28:04 -05:00
coroutine-win32.c
cpu-exec.c Merge branch 'mingw' of git://qemu.weilnetz.de/qemu 2013-04-13 14:31:54 +02:00
cpus.c cpus: Fix pausing TCG CPUs while in vCPU thread 2013-05-02 12:15:38 +02:00
cputlb.c cpu: Move current_tb field to CPUState 2013-02-16 14:51:00 +01:00
device_tree.c
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
disas.c disas: Disassemble all ppc insns for the guest 2013-04-26 23:02:42 +02:00
dma-helpers.c
dump-stub.c cpu: Move cpu_write_elfXX_note() functions to CPUState 2013-05-01 13:04:19 +02:00
dump.c cpu: Move cpu_write_elfXX_note() functions to CPUState 2013-05-01 13:04:19 +02:00
exec.c osdep: introduce qemu_anon_ram_free to free qemu_anon_ram_alloc-ed memory 2013-05-14 08:53:31 -05:00
gdbstub.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
HACKING osdep, kvm: rename low-level RAM allocation functions 2013-05-14 08:53:31 -05:00
hmp-commands.hx audio: remove HAS_AUDIO 2013-04-29 12:16:36 -05:00
hmp.c Merge remote-tracking branch 'bonzini/hw-dirs' into staging 2013-04-15 17:06:04 -05:00
hmp.h Revert "New QMP command query-cpu-max and HMP command cpu_max" 2013-04-12 09:41:54 -04:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c
kvm-all.c osdep, kvm: rename low-level RAM allocation functions 2013-05-14 08:53:31 -05:00
kvm-stub.c cpu: Call cpu_synchronize_post_init() from DeviceClass::realize() 2013-05-01 13:04:17 +02:00
LICENSE
main-loop.c main-loop: partial revert of 5e3bc73 2013-05-16 14:18:47 -05:00
MAINTAINERS target-i386: Introduce ICC bus/device/bridge 2013-05-01 13:06:06 +02:00
Makefile qapi: enable generation of native list code 2013-05-23 09:44:20 -04:00
Makefile.objs target-i386: Add "feature-words" property to X86CPU 2013-05-06 19:16:05 +02:00
Makefile.target cpu: Make kvm-stub.o available outside softmmu 2013-05-01 13:04:17 +02:00
memory_mapping-stub.c
memory_mapping.c
memory.c memory: fix a bug of detection of memory region collision 2013-03-22 13:21:28 +01:00
migration-exec.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-fd.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-tcp.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-unix.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration.c Revert "migration: don't account sleep time for calculating bandwidth" 2013-05-17 09:58:57 -05:00
monitor.c remove some double-includes 2013-05-18 16:35:12 +04:00
nbd.c nbd: support large NBD requests 2013-05-03 13:05:49 +02:00
os-posix.c Add option to mlock qemu and guest memory 2013-04-22 08:52:23 -05:00
os-win32.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
page_cache.c remove some double-includes 2013-05-18 16:35:12 +04:00
qapi-schema-test.json qapi: add native list coverage for QMP output visitor tests 2013-05-23 09:44:21 -04:00
qapi-schema.json chardev: Make the name of memory device consistent 2013-05-22 07:40:10 -05:00
qdev-monitor.c qdev: Let qdev_prop_parse() pass through Error 2013-05-06 19:40:44 +02:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: force usage of a very high MAC address for the bridge 2013-03-28 12:58:52 -05:00
qemu-char.c chardev: Get filename for new qapi backend 2013-05-22 07:40:10 -05:00
qemu-coroutine-io.c
qemu-coroutine-lock.c coroutine: use AioContext for CoQueue BH 2013-03-15 16:07:51 +01:00
qemu-coroutine-sleep.c
qemu-coroutine.c coroutine: move pooling to common code 2013-02-22 21:21:10 +01:00
qemu-doc.texi audio: update documentation after removing --audio-card-list option 2013-05-12 13:25:55 +04:00
qemu-img-cmds.hx qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-img.c qemu-img: do not zero-pad the compressed write buffer 2013-04-22 10:27:58 +02:00
qemu-img.texi qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-io.c block: Add options QDict to bdrv_file_open() prototypes 2013-03-22 17:51:31 +01:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c Add -f FMT / --format FMT arg to qemu-nbd 2013-04-15 14:29:20 -05:00
qemu-nbd.texi Add -f FMT / --format FMT arg to qemu-nbd 2013-04-15 14:29:20 -05:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx monitor: allow to disable the default monitor 2013-05-23 09:58:45 -04:00
qemu-seccomp.c
qemu-tech.texi
qemu-timer.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
qemu.sasl
qmp-commands.hx Merge remote-tracking branch 'afaerber/qom-cpu' into staging 2013-05-02 10:57:01 -05:00
qmp.c QMP: Add cpu-add command 2013-05-01 13:06:07 +02:00
qtest.c qtest: Handle addresses and values for {in, out}[bwl] as unsigned 2013-04-22 09:11:50 -05:00
readline.c readline: Handle xterm escape sequences for Home/End keys 2013-05-14 08:53:22 -05:00
README
rules.mak win32: fix compilation again 2013-05-03 12:04:40 -05:00
savevm.c qemu-file: do not use stdio for qemu_fdopen 2013-04-17 11:44:22 +02:00
spice-qemu-char.c spice-qemu-char: vmc_write: Don't write more bytes then we're asked too 2013-04-16 11:52:09 +02:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c tci: Make tcg temporaries local to tcg_qemu_tb_exec 2013-04-11 19:58:21 +02:00
thread-pool.c threadpool: drop global thread pool 2013-03-15 16:07:51 +01:00
thunk.c
tpm.c Move TPM passthrough specific command line options to backend structure 2013-04-23 10:40:40 -05:00
trace-events osdep: fix qemu_anon_ram_free trace (+ fix compilation on 32 bit hosts) 2013-05-20 08:20:08 -05:00
translate-all.c translate: remove redundantly included qemu/timer.h 2013-05-18 16:35:12 +04:00
translate-all.h cputlb: Pass CPUState to cpu_unlink_tb() 2013-02-16 14:51:00 +01:00
user-exec.c Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp() 2013-02-23 16:11:19 +00:00
VERSION Open up 1.6 development 2013-05-20 10:55:18 -05:00
version.rc
vl.c monitor: allow to disable the default monitor 2013-05-23 09:58:45 -04:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
xen-mapcache.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-stub.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu.org

- QEMU team