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Fam Zheng 38705bb57b virtio-net: Flush incoming queues when DRIVER_OK is being set 
This patch fixes network hang after "stop" then "cont", while network
packets keep arriving.

Tested both manually (tap, host pinging guest) and with Jason's qtest
series (plus his "[PATCH 2.4] socket: pass correct size in
net_socket_send()" fix).

As virtio_net_set_status is called when guest driver is setting status
byte and when vm state is changing, it is a good opportunity to flush
queued packets.

This is necessary because during vm stop the backend (e.g. tap) would
stop rx processing after .can_receive returns false, until the queue is
explicitly flushed or purged.

The other interesting condition in .can_receive, virtio_queue_ready(),
is handled by virtio_net_handle_rx() when guest kicks; the 3rd condition
is invalid queue index which doesn't need flushing.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-07-20 14:19:41 +03:00
audio ossaudio: fix memory leak 2015-07-08 13:11:01 +02:00
backends Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
block block/curl: Don't lose original error when a connection fails. 2015-07-14 21:50:13 -04:00
bsd-user cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
crypto crypto: avoid undefined behavior in nettle calls 2015-07-16 20:00:21 +02:00
default-configs acpi: split out ICH ACPI support 2015-07-07 13:11:57 +03:00
disas disas/mips: fix disassembling R6 instructions 2015-07-15 14:07:20 +01:00
docs Revert "vhost-user: add multi queue support" 2015-07-20 14:19:40 +03:00
dtc@65cc4d2748 dtc: Update dtc / libfdt submodule to version 1.4.0 2015-06-03 23:56:49 +02:00
fpu target-s390x: define default NaN values 2015-06-05 01:37:58 +02:00
fsdev virtfs-proxy-helper: fail gracefully if socket path is too long 2015-06-16 20:32:29 +05:30
gdb-xml gdb-xml: Include XML for s390 vector registers 2015-05-27 17:52:03 +02:00
hw virtio-net: Flush incoming queues when DRIVER_OK is being set 2015-07-20 14:19:41 +03:00
include virtio-net: unbreak any layout 2015-07-20 14:19:41 +03:00
libcacard libcacard: pkgconfig: tidy dependent libs 2015-06-23 19:57:28 +03:00
libdecnumber remove libdecnumber/dpd/decimal128Local.h 2015-06-23 19:57:27 +03:00
linux-headers linux-headers: Update to 4.2-rc1 2015-07-06 17:59:01 +02:00
linux-user linux-user: Fix MIPS N64 trap and break instruction bug 2015-07-15 14:07:25 +01:00
migration RDMA: Fix error exits 2015-07-16 20:00:20 +02:00
net Revert "vhost-user: add multi queue support" 2015-07-20 14:19:40 +03:00
pc-bios pseries: Update SLOF firmware image to qemu-slof-20150429 2015-07-07 17:44:49 +02:00
pixman@87eea99e44 pixman: update internal copy to pixman-0.32.6 2014-09-15 08:14:19 +02:00
po po: fix conflict with %.mo rule in rules.mak 2014-09-26 13:35:08 +02:00
qapi migration: create migration event 2015-07-07 14:54:55 +02:00
qga qga: added GuestPCIAddress information 2015-07-07 20:59:04 -05:00
qobject Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qom cpu: Convert cpu_index into a bitmap 2015-07-09 15:20:40 +02:00
roms pseries: Update SLOF firmware image to qemu-slof-20150429 2015-07-07 17:44:49 +02:00
scripts pci_regs.h: import from linux 2015-07-08 10:09:56 +03:00
slirp qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
stubs main-loop: introduce qemu_mutex_iothread_locked 2015-07-01 15:45:50 +02:00
target-alpha cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-arm target-arm: Fix broken SCTLR_EL3 reset 2015-07-15 17:16:26 +01:00
target-cris disas: cris: QOMify target specific disas setup 2015-07-09 15:20:41 +02:00
target-i386 target-i386: emulate CPUID level of real hardware 2015-07-15 17:05:59 -03:00
target-lm32 cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-m68k cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-microblaze disas: microblaze: QOMify target specific disas setup 2015-07-09 15:20:41 +02:00
target-mips mips/kvm: Sign extend registers written to KVM 2015-07-16 20:00:20 +02:00
target-moxie cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-openrisc cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-ppc cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-s390x cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-sh4 cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-sparc cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-tricore cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-unicore32 cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
target-xtensa cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
tcg tci: Fix regression with INDEX_op_qemu_st_i32, INDEX_op_qemu_st_i64 2015-07-13 10:07:38 +01:00
tests Bugfixes and Daniel Berrange's crypto library. 2015-07-08 20:46:35 +01:00
trace Remove superfluous '\n' around error_report() 2015-03-10 08:15:33 +03:00
ui vnc: fix vnc client authentication 2015-07-14 15:33:48 +02:00
util crypto: move built-in AES implementation into crypto/ 2015-07-07 12:04:13 +02:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore gitignore: Ignore more .pod files. 2015-04-04 09:45:59 +03:00
.gitmodules PPC: Add u-boot firmware for e500 2014-06-16 13:24:35 +02:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml .travis.yml: Add "--enable-modules" 2015-01-26 12:27:05 +01:00
accel.c accel: Create accel object when initializing machine 2014-10-09 15:36:14 +02:00
aio-posix.c AioContext: acquire/release AioContext during aio_poll 2015-04-28 15:36:08 +02:00
aio-win32.c AioContext: acquire/release AioContext during aio_poll 2015-04-28 15:36:08 +02:00
arch_init.c migration: reduce include files 2015-06-12 06:42:34 +02:00
async.c Revert "iothread: release iothread around aio_poll" 2015-06-12 13:58:33 +01:00
balloon.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
block.c block: Fix backing file child when modifying graph 2015-07-14 17:15:23 +02:00
blockdev-nbd.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
blockdev.c mirror: correct buf_size 2015-07-14 21:50:13 -04:00
blockjob.c blockjob: add block_job_release function 2015-07-07 14:27:14 +01:00
bootdevice.c misc: fix typos in copyright declaration 2015-03-26 14:21:43 +01:00
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 Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE CODING_STYLE: Section about conditional statement 2014-08-15 18:54:06 +04:00
configure crypto: fix build with nettle >= 3.0.0 2015-07-16 20:00:20 +02:00
COPYING
COPYING.LIB
coroutine-gthread.c glib-compat.h: add new thread API emulation on top of pre-2.31 API 2014-06-10 07:44:01 +02:00
coroutine-sigaltstack.c coroutine-sigaltstack: Change jmp_buf to sigjmp_buf 2014-11-11 11:07:55 +03:00
coroutine-ucontext.c coroutine-ucontext: use __thread 2015-01-13 13:43:28 +00:00
coroutine-win32.c coroutine-win32.c: Add noinline attribute to work around gcc bug 2014-06-26 14:08:14 +01:00
cpu-exec.c cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
cpus.c cpu-exec: Purge all uses of ENV_GET_CPU() 2015-07-09 15:20:40 +02:00
cputlb.c memory: replace cpu_physical_memory_reset_dirty() with test-and-clear 2015-06-05 17:10:00 +02:00
device_tree.c device-tree: Make a common-obj 2015-06-03 14:21:24 +03:00
device-hotplug.c pci-hotplug-old: Has been dead for five major releases, bury 2015-03-01 12:37:54 +01:00
disas.c disas: cris: QOMify target specific disas setup 2015-07-09 15:20:41 +02:00
dma-helpers.c range: remove useless inclusions 2015-04-30 16:05:48 +03:00
dump.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
exec.c cpu: Change cpu_exec_init() arg to cpu, not env 2015-07-09 15:20:40 +02:00
gdbstub.c gdbstub: Use cpu_set_pc() helper 2015-07-09 15:20:40 +02:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands.hx qmp/hmp: add rocker device support 2015-06-12 13:42:17 +01:00
hmp.c qmp: Add optional bool "unmap" to drive-mirror 2015-07-02 10:06:23 +01:00
hmp.h qmp/hmp: add rocker device support 2015-06-12 13:42:17 +01:00
iohandler.c iohandler: Change return type of qemu_set_fd_handler to "void" 2015-06-12 13:26:21 +01:00
ioport.c - miscellaneous cleanups for TCG (Emilio) and NBD (Bogdan) 2015-04-30 12:04:11 +01:00
iothread.c qom: Add helper function for getting user objects root 2015-06-19 18:40:00 +02:00
kvm-all.c VFIO updates for 2.4-rc0 2015-07-07 09:22:40 +01:00
kvm-stub.c kvm: some fixes to kvm_resamplefds_allowed 2015-07-06 12:15:14 -06:00
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00
main-loop.c Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
MAINTAINERS MAINTAINERS: update email address 2015-07-14 17:15:23 +02:00
Makefile Makefile: Add "make ctags" 2015-06-23 20:23:39 +03:00
Makefile.objs crypto: introduce new module for computing hash digests 2015-07-07 12:04:07 +02:00
Makefile.target migration: move savevm.c inside migration/ 2015-06-12 06:42:30 +02:00
memory_mapping.c memory_mapping: Rework cpu related includes 2015-06-26 16:00:50 +02:00
memory.c memory: fix refcount leak in memory_region_present 2015-07-16 20:00:20 +02:00
module-common.c module: implement module loading 2014-02-20 13:14:18 +01:00
monitor.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
nbd.c qemu-nbd: only send a limited number of errno codes on the wire 2015-05-08 14:45:11 +02:00
numa.c numa: Fix memory leak in numa_set_mem_node_id() 2015-07-15 16:57:50 -03:00
os-posix.c rcu: do not create thread in pthread_atfork callback 2015-04-01 10:06:38 +02:00
os-win32.c pidfile: stop making pidfile error a special case 2014-11-02 10:04:34 +03:00
page_cache.c xbzrle: rebuild the cache_is_cached function 2015-01-15 17:49:43 +05:30
qapi-schema.json Revert "vhost-user: add multi queue support" 2015-07-20 14:19:40 +03:00
qdev-monitor.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: Fix fd leak in main() 2014-06-27 10:39:10 +02:00
qemu-char.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-coroutine-io.c coroutine-io: Return -errno in case of error 2015-03-18 12:07:21 +01:00
qemu-coroutine-lock.c coroutine: remove unnecessary parentheses in qemu_co_queue_empty 2015-04-30 16:05:49 +03:00
qemu-coroutine-sleep.c coroutine: Drop co_sleep_ns 2014-08-29 10:46:58 +01:00
qemu-coroutine.c coroutine: Clean up qemu_coroutine_enter() 2015-03-09 11:11:59 +01:00
qemu-doc.texi raw-posix: Deprecate host floppy passthrough 2015-03-19 11:43:02 +01:00
qemu-img-cmds.hx qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-img.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qemu-img.texi qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-io-cmds.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-io.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-log.c qemu-log: Correct help text of 'log cpu_reset' 2015-02-10 09:27:20 +03:00
qemu-nbd.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-nbd.texi nbd: Miscellaneous typo fixes. 2014-05-24 00:07:29 +04:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx Revert "vhost-user: add multi queue support" 2015-07-20 14:19:40 +03:00
qemu-seccomp.c seccomp: add mlockall to whitelist 2015-01-23 14:07:08 +01:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c qemu-timer: Call clock reset notifiers on forward jumps 2015-06-19 12:27:14 +02:00
qemu.nsi nsis: Improved support for parallel installation of 32 and 64 bit code 2013-11-07 07:02:44 +01:00
qemu.sasl sasl: Avoid 'Could not find keytab file' in syslog 2014-03-15 13:54:18 +04:00
qjson.c QJSON: Use OBJECT_CHECK 2015-05-11 08:59:07 -04:00
qmp-commands.hx migration: Write documetation for events capabilites 2015-07-15 09:07:54 +02:00
qmp.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
qtest.c qtest: pre-buffer hex nibs 2015-05-22 15:58:22 -04:00
README Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
rules.mak rules.mak: Force CFLAGS for all objects in DSO 2015-05-08 14:45:11 +02:00
softmmu_template.h softmmu: Add probe_write() 2015-06-11 10:13:28 +01:00
spice-qemu-char.c spice: fix spice_chr_add_watch() pre-condition 2015-05-29 09:56:01 +02:00
tcg-runtime.c tcg: Push tcg-runtime routines into exec/helper-* 2014-05-28 09:33:54 -07:00
tci.c tcg: Mask TCGMemOp appropriately for indexing 2015-06-09 06:35:29 -07:00
thread-pool.c thread-pool: clean up thread_pool_completion_bh() 2015-04-28 15:36:09 +02:00
thunk.c linux-user: Allocate thunk size dynamically 2015-06-15 11:36:58 +03:00
tpm.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
trace-events vmstate: Create optional sections 2015-07-07 14:54:52 +02:00
translate-all.c translate-all: Change tb_flush() env argument to cpu 2015-07-09 15:20:40 +02:00
translate-all.h translate-all: remove unnecessary argument to tb_invalidate_phys_range 2015-06-05 17:09:59 +02:00
user-exec.c exec: move functions to translate-all.h 2015-06-05 17:09:59 +02:00
VERSION Update version for v2.4.0-rc1 release 2015-07-16 20:32:20 +01:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c migration: Register global state section before loadvm 2015-07-15 09:07:54 +02:00
xen-common-stub.c accel: Move Xen registration code to xen-common.c 2014-10-04 08:59:15 +02:00
xen-common.c accel: Pass MachineState object to accel init functions 2014-10-09 12:57:10 +02:00
xen-hvm-stub.c xen: Remove xen_cmos_set_s3_resume() 2015-03-10 08:15:33 +03:00
xen-hvm.c xen-220615, more SOB lines 2015-06-23 17:46:20 +01:00
xen-mapcache.c xen: add a lock for the mapcache 2015-01-20 14:24:17 +00:00

README 

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

- QEMU team