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2019-10-29COLO-compare: Fix incorrect `if` logicFan Yang1-3/+3
'colo_mark_tcp_pkt' should return 'true' when packets are the same, and 'false' otherwise. However, it returns 'true' when 'colo_compare_packet_payload' returns non-zero while 'colo_compare_packet_payload' is just a 'memcmp'. The result is that COLO-compare reports inconsistent TCP packets when they are actually the same. Fixes: f449c9e549c ("colo: compare the packet based on the tcp sequence number") Cc: qemu-stable@nongnu.org Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Fan Yang <Fan_Yang@sjtu.edu.cn> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-10-17Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell1-0/+4
virtio, vhost, acpi: features, fixes, tests ARM ACPI memory hotplug support + tests for new arm/virt ACPI tables. Virtio fs support (no migration). A vhost-user reconnect bugfix. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Tue 15 Oct 2019 22:02:19 BST # gpg: using RSA key 281F0DB8D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full] # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full] # Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67 # Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469 * remotes/mst/tags/for_upstream: virtio: add vhost-user-fs-pci device virtio: add vhost-user-fs base device virtio: Add virtio_fs linux headers tests/acpi: add expected tables for arm/virt tests: document how to update acpi tables tests: Add bios tests to arm/virt tests: allow empty expected files tests/acpi: add empty files tests: Update ACPI tables list for upcoming arm/virt tests docs/specs: Add ACPI GED documentation hw/arm: Use GED for system_powerdown event hw/arm: Factor out powerdown notifier from GPIO hw/arm/virt-acpi-build: Add PC-DIMM in SRAT hw/arm/virt: Enable device memory cold/hot plug with ACPI boot hw/arm/virt: Add memory hotplug framework hw/acpi: Add ACPI Generic Event Device Support hw/acpi: Do not create memory hotplug method when handler is not defined hw/acpi: Make ACPI IO address space configurable vhost-user: save features if the char dev is closed Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-05vhost-user: save features if the char dev is closedAdrian Moreno1-0/+4
That way the state can be correctly restored when the device is opened again. This might happen if the backend is restarted. Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1738768 Reported-by: Pei Zhang <pezhang@redhat.com> Fixes: 6ab79a20af3a ("do not call vhost_net_cleanup() on running net from char user event") Cc: ddstreet@canonical.com Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-stable@nongnu.org Signed-off-by: Adrian Moreno <amorenoz@redhat.com> Message-Id: <20190924162044.11414-1-amorenoz@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-01slirp: Allow non-local DNS address when restrict is offSamuel Thibault1-2/+2
This can be used to set a DNS server to be used by the guest which is different from the one configured on the host. Buglink: https://bugs.launchpad.net/qemu/+bug/1010484 Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
2019-09-18trace: Remove trailing newline in eventsPhilippe Mathieu-Daudé1-3/+3
While the tracing framework does not forbid trailing newline in events format string, using them lead to confuse output. It is the responsibility of the backend to properly end an event line. Some of our formats have trailing newlines, remove them. [Fixed typo in commit description reported by Eric Blake <eblake@redhat.com> --Stefan] Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20190916095121.29506-2-philmd@redhat.com Message-Id: <20190916095121.29506-2-philmd@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-09-12migration: register_savevm_live doesn't need devDr. David Alan Gilbert1-1/+1
Commit 78dd48df3 removed the last caller of register_savevm_live for an instantiable device (rather than a single system wide device); so trim out the parameter. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190822115433.12070-1-dgilbert@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-08-16sysemu: Split sysemu/runstate.h off sysemu/sysemu.hMarkus Armbruster1-0/+2
sysemu/sysemu.h is a rather unfocused dumping ground for stuff related to the system-emulator. Evidence: * It's included widely: in my "build everything" tree, changing sysemu/sysemu.h still triggers a recompile of some 1100 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h, down from 5400 due to the previous two commits). * It pulls in more than a dozen additional headers. Split stuff related to run state management into its own header sysemu/runstate.h. Touching sysemu/sysemu.h now recompiles some 850 objects. qemu/uuid.h also drops from 1100 to 850, and qapi/qapi-types-run-state.h from 4400 to 4200. Touching new sysemu/runstate.h recompiles some 500 objects. Since I'm touching MAINTAINERS to add sysemu/runstate.h anyway, also add qemu/main-loop.h. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190812052359.30071-30-armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> [Unbreak OS-X build]
2019-08-16Clean up inclusion of sysemu/sysemu.hMarkus Armbruster4-4/+0
In my "build everything" tree, changing sysemu/sysemu.h triggers a recompile of some 5400 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). Almost a third of its inclusions are actually superfluous. Delete them. Downgrade two more to qapi/qapi-types-run-state.h, and move one from char/serial.h to char/serial.c. hw/semihosting/config.c, monitor/monitor.c, qdev-monitor.c, and stubs/semihost.c define variables declared in sysemu/sysemu.h without including it. The compiler is cool with that, but include it anyway. This doesn't reduce actual use much, as it's still included into widely included headers. The next commit will tackle that. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20190812052359.30071-27-armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2019-08-16Include hw/qdev-properties.h lessMarkus Armbruster1-1/+1
In my "build everything" tree, changing hw/qdev-properties.h triggers a recompile of some 2700 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). Many places including hw/qdev-properties.h (directly or via hw/qdev.h) actually need only hw/qdev-core.h. Include hw/qdev-core.h there instead. hw/qdev.h is actually pointless: all it does is include hw/qdev-core.h and hw/qdev-properties.h, which in turn includes hw/qdev-core.h. Replace the remaining uses of hw/qdev.h by hw/qdev-properties.h. While there, delete a few superfluous inclusions of hw/qdev-core.h. Touching hw/qdev-properties.h now recompiles some 1200 objects. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Daniel P. Berrangé" <berrange@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20190812052359.30071-22-armbru@redhat.com>
2019-08-16Include qemu/main-loop.h lessMarkus Armbruster4-0/+4
In my "build everything" tree, changing qemu/main-loop.h triggers a recompile of some 5600 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). It includes block/aio.h, which in turn includes qemu/event_notifier.h, qemu/notify.h, qemu/processor.h, qemu/qsp.h, qemu/queue.h, qemu/thread-posix.h, qemu/thread.h, qemu/timer.h, and a few more. Include qemu/main-loop.h only where it's needed. Touching it now recompiles only some 1700 objects. For block/aio.h and qemu/event_notifier.h, these numbers drop from 5600 to 2800. For the others, they shrink only slightly. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190812052359.30071-21-armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-07-29net/colo-compare.c: Fix memory leak and code style issue.Zhang Chen1-7/+20
This patch to fix the origin "char *data" memory leak, code style issue and add necessary check here. Reported-by: Coverity (CID 1402785) Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-29net: tap: replace snprintf with g_strdup_printf callsPrasad J Pandit1-8/+11
When invoking qemu-bridge-helper in 'net_bridge_run_helper', instead of using fixed sized buffers, use dynamically allocated ones initialised and returned by g_strdup_printf(). Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Reviewed-by: Li Qiang <liq3ea@gmail.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02COLO-compare: Add colo-compare remote notify supportZhang Chen1-10/+44
This patch make colo-compare can send message to remote COLO frame(Xen) when occur checkpoint. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02COLO-compare: Make the compare_chr_send() can send notification message.Zhang Chen1-8/+33
We need use this function to send notification message for remote colo-frame(Xen). So we add new parameter for this job. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02COLO-compare: Add remote notification chardev handler frameZhang Chen1-0/+39
Add chardev handler to send notification to remote(current from Xen) colo-frame. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02COLO-compare: Add new parameter to communicate with remote colo-frameZhang Chen1-0/+21
We add the "notify_dev=chardevID" parameter. After that colo-compare can connect with remote(currently just for Xen, KVM-COLO didn't need it.) colo-frame through chardev socket, it can notify remote(Xen) colo-frame to handle checkpoint event. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02net/announce: Add optional IDDr. David Alan Gilbert2-8/+47
Previously there was a single instance of the timer used by monitor triggered announces, that's OK, but when combined with the previous change that lets you have announces for subsets of interfaces it's a bit restrictive if you want to do different things to different interfaces. Add an 'id' field to the announce, and maintain a list of the timers based on id. This allows you to for example: a) Start an announce going on interface eth0 for a long time b) Start an announce going on interface eth1 for a long time c) Kill the announce on eth0 while leaving eth1 going. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02net/announce: Allow optional list of interfacesDr. David Alan Gilbert2-8/+33
Allow the caller to restrict the set of interfaces that announces are sent on. The default is still to send on all interfaces. e.g. { "execute": "announce-self", "arguments": { "initial": 50, "max": 550, "rounds": 5, "step": 50, "interfaces": ["vn2", "vn1"] } } This doesn't affect the behaviour of migraiton announcments. Note: There's still only one timer for the qmp command, so that performing an 'announce-self' on one list of interfaces followed by another 'announce-self' on another list will stop the announces on the existing set. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02net: remove unused get_str_sep() functionStefano Garzarella1-20/+0
Since the get_str_sep() function is no longer used in net/net.c, we can remove it. Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02net: use g_strsplit() for parsing host address and portStefano Garzarella1-16/+27
Use the glib function to split host address and port in the parse_host_port() function. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02net: avoid using variable length array in net_client_init()Stefano Garzarella1-12/+19
net_client_init() uses a variable length array to store the prefix of 'ipv6-net' parameter (e.g. if ipv6-net=fec0::0/64, the prefix is 'fec0::0'). This patch introduces g_strsplit() to split the 'ipv6-net' parameter, so we can remove the variable length array. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-07-02net: fix assertion failure when ipv6-prefixlen is not a numberStefano Garzarella1-4/+5
If 'ipv6-prefixlen' is not a number, the current behaviour produces an assertion failure: $ qemu-system-x86_64 -net user,ipv6-net=feca::0/a qemu-system-x86_64: qemu/util/qemu-option.c:1175: qemu_opts_foreach: Assertion `!errp || !*errp' failed. Aborted (core dumped) This patch fixes it, jumping to the end of the function when 'ipv6-prefixlen' is not a number, and printing the more friendly message: $ qemu-system-x86_64 -net user,ipv6-net=feca::0/a qemu-system-x86_64: Parameter 'ipv6-prefixlen' expects a number Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-06-12Include qemu-common.h exactly where neededMarkus Armbruster12-9/+4
No header includes qemu-common.h after this commit, as prescribed by qemu-common.h's file comment. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-5-armbru@redhat.com> [Rebased with conflicts resolved automatically, except for include/hw/arm/xlnx-zynqmp.h hw/arm/nrf51_soc.c hw/arm/msf2-soc.c block/qcow2-refcount.c block/qcow2-cluster.c block/qcow2-cache.c target/arm/cpu.h target/lm32/cpu.h target/m68k/cpu.h target/mips/cpu.h target/moxie/cpu.h target/nios2/cpu.h target/openrisc/cpu.h target/riscv/cpu.h target/tilegx/cpu.h target/tricore/cpu.h target/unicore32/cpu.h target/xtensa/cpu.h; bsd-user/main.c and net/tap-bsd.c fixed up]
2019-06-12Include qemu/module.h where needed, drop it from qemu-common.hMarkus Armbruster6-3/+9
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-4-armbru@redhat.com> [Rebased with conflicts resolved automatically, except for hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c; ui/cocoa.m fixed up]
2019-06-11qemu-common: Move qemu_isalnum() etc. to qemu/ctype.hMarkus Armbruster2-0/+2
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-3-armbru@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-20do not call vhost_net_cleanup() on running net from char user eventDan Streetman1-1/+0
Buglink: https://launchpad.net/bugs/1823458 Currently, a user CHR_EVENT_CLOSED event will cause net_vhost_user_event() to call vhost_user_cleanup(), which calls vhost_net_cleanup() for all its queues. However, vhost_net_cleanup() must never be called like this for fully-initialized nets; when other code later calls vhost_net_stop() - such as from virtio_net_vhost_status() - it will try to access the already-cleaned-up fields and fail with assertion errors or segfaults. The vhost_net_cleanup() will eventually be called from qemu_cleanup_net_client(). Signed-off-by: Dan Streetman <ddstreet@canonical.com> Message-Id: <20190416184624.15397-3-dan.streetman@canonical.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-05-17net/colo-compare.c: Fix a crash in COLO Primary.Lukas Straub1-2/+1
Because event_unhandled_count may be accessed concurrently, it needs to be protected by taking the lock. However the assert is outside the lock, probably causing it to read garbage and aborting Qemu erroneously. The Bug only happens when running Qemu in COLO mode. This Patch fixes the following bug: https://bugs.launchpad.net/qemu/+bug/1824622 Signed-off-by: Lukas Straub <lukasstraub2@web.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-05-17net/slirp: fix the IPv6 prefix length error messageStefano Garzarella1-1/+2
Reword and add a missing parentheses at the end of the error message. Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-05-13Clean up header guards that don't match their file nameMarkus Armbruster1-3/+3
Header guard symbols should match their file name to make guard collisions less likely. Cleaned up with scripts/clean-header-guards.pl, followed by some renaming of new guard symbols picked by the script to better ones. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190315145123.28030-6-armbru@redhat.com> [Rebase to master: update include/hw/net/ne2000-isa.h]
2019-05-03net: Print output of "-net nic, model=help" to stdout instead of stderrThomas Huth1-3/+4
We are printing all other help output to stdout already (e.g. "-help", "-cpu help" and "-machine help" output). So the "-net nic,model=help" output should go to stdout instead of stderr, too. And while we're at it, also print the NICs line by line, like we do it e.g. with the "-cpu help" or "-M help" output, too. Buglink: https://bugs.launchpad.net/qemu/+bug/1574327 Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190423160608.7519-1-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-29net: tap: use qemu_set_nonblockLi Qiang1-5/+5
The fcntl will change the flags directly, use qemu_set_nonblock() instead. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Li Qiang <liq3ea@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-29net/socket: learn to talk with a unix dgram socketMarc-André Lureau1-4/+21
-net socket has a fd argument, and may be passed pre-opened sockets. TCP sockets use framing. UDP sockets have datagram boundaries. When given a unix dgram socket, it will be able to read from it, but will attempt to send on the dgram_dst, which is unset. The other end will not receive the data. Let's teach -net socket to recognize a UNIX DGRAM socket, and use the regular send() command (without dgram_dst). This makes running slirp out-of-process possible that way (python pseudo-code): a, b = socket.socketpair(socket.AF_UNIX, socket.SOCK_DGRAM) subprocess.Popen('qemu -net socket,fd=%d -net user' % a.fileno(), shell=True) subprocess.Popen('qemu ... -net nic -net socket,fd=%d' % b.fileno(), shell=True) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-22trace-events: Shorten file names in commentsMarkus Armbruster1-5/+5
We spell out sub/dir/ in sub/dir/trace-events' comments pointing to source files. That's because when trace-events got split up, the comments were moved verbatim. Delete the sub/dir/ part from these comments. Gets rid of several misspellings. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20190314180929.27722-3-armbru@redhat.com Message-Id: <20190314180929.27722-3-armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-03-12vhost-user: simplify vhost_user_init/vhost_user_cleanupMarc-André Lureau1-9/+4
Take a VhostUserState* that can be pre-allocated, and initialize it with the associated chardev. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Tiwei Bie <tiwei.bie@intel.com> Message-Id: <20190308140454.32437-4-marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-03-07build-sys: link with slirp as an external projectMarc-André Lureau2-1/+3
Use the "system" libslirp if its present or requested. Else build with a static libslirp.a if slirp/ is checked out ("internal") or a submodule ("git"). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190212162524.31504-7-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-03-07slirp: move sources to src/ subdirectoryMarc-André Lureau1-1/+1
Prepare for making slirp/ a standalone project. Remove some useless includes while at it. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190212162524.31504-5-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-03-07slirp: use libslirp migration codeMarc-André Lureau1-0/+55
slirp migration code uses QEMU vmstate so far, when building WITH_QEMU. Introduce slirp_state_{load,save,version}() functions to move the state saving handling to libslirp side. So far, the bitstream compatibility should remain equal with current QEMU, as this is effectively using the same code, with the same format etc. When libslirp is made standalone, we will need some mechanism to ensure bitstream compatibility regardless of the libslirp version installed. See the FIXME note in the code. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190212162524.31504-3-marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-03-06slirp: Mark pieces missing IPv6 supportSamuel Thibault1-0/+1
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2019-03-05qmp: Add announce-self commandDr. David Alan Gilbert1-0/+7
Add a qmp command that can trigger guest announcements. It uses its own announce-timer instance, and parameters passed to it explicitly in the command. Like most qmp commands, it's in the main thread/bql, so there's no racing with any outstanding timer. Based on work of Germano Veit Michel <germano@redhat.com> and Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05net: Add a network device specific self-announcement abilityDr. David Alan Gilbert1-0/+5
Some network devices have a capability to do self announcements (ex: virtio-net). Add infrastructure that would allow devices to expose this ability. Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05migration: Switch to using announce timerDr. David Alan Gilbert2-0/+71
Switch the announcements to using the new announce timer. Move the code that does it to announce.c rather than savevm because it really has nothing to do with the actual migration. Migration starts the announce from bh's and so they're all in the main thread/bql, and so there's never any racing with the timers themselves. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05net: Introduce announce timerDr. David Alan Gilbert2-0/+61
The 'announce timer' will be used by migration, and explicit requests for qemu to perform network announces. Based on the work by Germano Veit Michel <germano@redhat.com> and Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05net: netmap: improve netmap_receive_iov()Vincenzo Maffione1-12/+17
Changes: - Save CPU cycles by computing the return value while scanning the input iovec, rather than calling iov_size() at the end. - Remove check for s->tx != NULL, because it cannot happen. - Cache ring->tail in a local variable and use it to check for space in the TX ring. The use of nm_ring_empty() was invalid, because nobody is updating ring->cur and ring->head at that point. - In case we run out of netmap slots in the middle of a packet, move the wake-up point by advancing ring->cur, but do not expose the incomplete packet (i.e., by updating also ring->head). Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05net: netmap: simplify netmap_receive()Vincenzo Maffione1-39/+11
Improve code reuse by implementing netmap_receive() with a call to netmap_receive_iov(). Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05net: netmap: small improvements netmap_send()Vincenzo Maffione1-12/+19
This change improves the handling of incomplete multi-slot packets (e.g. with the NS_MOREFRAG set), by advancing ring->head only on complete packets. The ring->cur pointer is advanced in any case in order to acknowledge the kernel and move the wake-up point (thus avoiding repeated wake-ups). Also don't be verbose when incomplete packets are found. Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05net/colo-compare.c: Remove duplicated codeZhang Chen1-8/+0
Fix duplicated code: https://bugs.launchpad.net/qemu/+bug/1811499 Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-02-21vhost-user: support cross-endian vnet headersPaolo Bonzini1-0/+13
vhost-user already has a way to communicate the endianness of the guest via the vring endianness messages. The vring endianness always matches the vnet header endianness so there is no need to do anything else in the backend. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1543851204-41186-9-git-send-email-pbonzini@redhat.com> Message-Id: <1550165756-21617-5-git-send-email-pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-02-21vhost-net-user: add stubs for when no virtio-net device is presentPaolo Bonzini3-2/+27
hw/net/vhost_net.c needs functions that are declared in net/vhost-user.c: the vhost-user code is always compiled into QEMU, only the constructor net_init_vhost_user is unreachable. Also, net/vhost-user.c needs functions declared in hw/virtio/vhost-stub.c even if no virtio device exists. Break this dependency. First, add a minimal version of net/vhost-user.c, with no functionality and no dependency on vhost code. Second, #ifdef out the calls back to net/vhost-user.c from hw/net/vhost_net.c. While at it, this patch fixes the CONFIG_VHOST_NET_USE*D* typo. Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <1543851204-41186-3-git-send-email-pbonzini@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1550165756-21617-3-git-send-email-pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-02-13char: allow specifying a GMainContext at opening timePaolo Bonzini1-1/+1
This will be needed by vhost-user-test, when each test switches to its own GMainLoop and GMainContext. Otherwise, for a reconnecting socket the initial connection will happen on the default GMainContext, and no one will be listening on it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20190202110834.24880-1-pbonzini@redhat.com> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2019-02-07slirp: pass opaque to all callbacksMarc-André Lureau1-9/+16
This is friendlier for FFI bindings. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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