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2016-02-23all: Clean up includesPeter Maydell2-2/+0
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-08qom: Swap 'name' next to visitor in ObjectPropertyAccessorEric Blake2-8/+10
Similar to the previous patch, it's nice to have all functions in the tree that involve a visitor and a name for conversion to or from QAPI to consistently stick the 'name' parameter next to the Visitor parameter. Done by manually changing include/qom/object.h and qom/object.c, then running this Coccinelle script and touching up the fallout (Coccinelle insisted on adding some trailing whitespace). @ rule1 @ identifier fn; typedef Object, Visitor, Error; identifier obj, v, opaque, name, errp; @@ void fn - (Object *obj, Visitor *v, void *opaque, const char *name, + (Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { ... } @@ identifier rule1.fn; expression obj, v, opaque, name, errp; @@ fn(obj, v, - opaque, name, + name, opaque, errp) Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1454075341-13658-20-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-08qapi: Swap visit_* arguments for consistent 'name' placementEric Blake3-6/+6
JSON uses "name":value, but many of our visitor interfaces were called with visit_type_FOO(v, &value, name, errp). This can be a bit confusing to have to mentally swap the parameter order to match JSON order. It's particularly bad for visit_start_struct(), where the 'name' parameter is smack in the middle of the otherwise-related group of 'obj, kind, size' parameters! It's time to do a global swap of the parameter ordering, so that the 'name' parameter is always immediately after the Visitor argument. Additional reason in favor of the swap: the existing include/qjson.h prefers listing 'name' first in json_prop_*(), and I have plans to unify that file with the qapi visitors; listing 'name' first in qapi will minimize churn to the (admittedly few) qjson.h clients. Later patches will then fix docs, object.h, visitor-impl.h, and those clients to match. Done by first patching scripts/qapi*.py by hand to make generated files do what I want, then by running the following Coccinelle script to affect the rest of the code base: $ spatch --sp-file script `git grep -l '\bvisit_' -- '**/*.[ch]'` I then had to apply some touchups (Coccinelle insisted on TAB indentation in visitor.h, and botched the signature of visit_type_enum() by rewriting 'const char *const strings[]' to the syntactically invalid 'const char*const[] strings'). The movement of parameters is sufficient to provoke compiler errors if any callers were missed. // Part 1: Swap declaration order @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_start_struct -(TV v, TObj OBJ, T1 ARG1, const char *name, T2 ARG2, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type bool, TV, T1; identifier ARG1; @@ bool visit_optional -(TV v, T1 ARG1, const char *name) +(TV v, const char *name, T1 ARG1) { ... } @@ type TV, TErr, TObj, T1; identifier OBJ, ARG1; @@ void visit_get_next_type -(TV v, TObj OBJ, T1 ARG1, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, TErr errp) { ... } @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_type_enum -(TV v, TObj OBJ, T1 ARG1, T2 ARG2, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type TV, TErr, TObj; identifier OBJ; identifier VISIT_TYPE =~ "^visit_type_"; @@ void VISIT_TYPE -(TV v, TObj OBJ, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, TErr errp) { ... } // Part 2: swap caller order @@ expression V, NAME, OBJ, ARG1, ARG2, ERR; identifier VISIT_TYPE =~ "^visit_type_"; @@ ( -visit_start_struct(V, OBJ, ARG1, NAME, ARG2, ERR) +visit_start_struct(V, NAME, OBJ, ARG1, ARG2, ERR) | -visit_optional(V, ARG1, NAME) +visit_optional(V, NAME, ARG1) | -visit_get_next_type(V, OBJ, ARG1, NAME, ERR) +visit_get_next_type(V, NAME, OBJ, ARG1, ERR) | -visit_type_enum(V, OBJ, ARG1, ARG2, NAME, ERR) +visit_type_enum(V, NAME, OBJ, ARG1, ARG2, ERR) | -VISIT_TYPE(V, OBJ, NAME, ERR) +VISIT_TYPE(V, NAME, OBJ, ERR) ) Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1454075341-13658-19-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-04net: Clean up includesPeter Maydell22-15/+22
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1454089805-5470-11-git-send-email-peter.maydell@linaro.org
2016-02-04net/filter: Fix the output information for command 'info network'zhanghailiang2-25/+29
The properties of netfilter object could be changed by 'qom-set' command, but the output of 'info network' command is not updated, because it got the old information through nf->info_str, it will not be updated while we change the value of netfilter's property. Here we split a helper function that could collect the output information for filter, and also remove the useless member 'info_str' from struct NetFilterState. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Eric Blake <eblake@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Cc: Yang Hongyang <hongyang.yang@easystack.cn> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-02-04net: always walk through filters in reverse if traffic is egressLi Zhijian2-7/+34
Previously, if we attach more than one filters for a single netdev, both ingress and egress traffic will go through net filters in same order like: ingress: netdev ->filter1 ->filter2 ->...filter[n] ->emulated device egress: emulated device ->filter1 ->filter2 ->...filter[n] ->netdev. This is against the natural feeling and will complicate filters configuration since in some scenes, we hope filters handle the egress traffic in a reverse order. For example, in colo-proxy (will be implemented later), we have a redirector filter and a colo-rewriter filter, we need the filter behave like: ingress(->)/egress(<-): chardev<->redirector<->colo-rewriter<->emulated device Since both buffer filter and dump do not require strict order of filters, this patch switches to always let egress traffic walk through net filters in reverse to simplify the possible filters configuration in the future. Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Yang Hongyang <hongyang.yang@easystack.cn> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-02-04net: netmap: use nm_open() to open netmap portsVincenzo Maffione1-65/+32
This patch simplifies the netmap backend code by means of the nm_open() helper function provided by netmap_user.h, which hides the details of open(), iotcl() and mmap() carried out on the netmap device. Moreover, the semantic of nm_open() makes it possible to open special netmap ports (e.g. pipes, monitors) and use special modes (e.g. host rings only, single queue mode, exclusive access). Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-02-04net/slirp: Tell the users when they are using deprecated optionsThomas Huth1-0/+3
We don't want to support the legacy -tftp, -bootp, -smb and -net channel options forever. So let's start telling the users that they are deprecated and what option should be used instead. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-01-18qom: Change object property iterator API contractDaniel P. Berrange1-4/+3
Currently the ObjectProperty iterator API works as follows: ObjectPropertyIterator *iter; iter = object_property_iter_init(obj); while ((prop = object_property_iter_next(iter))) { ... } object_property_iter_free(iter); This has the benefit that the ObjectPropertyIterator struct can be opaque, but has the downside that callers need to explicitly call a free function. It is also not in keeping with iterator style used elsewhere in QEMU/GLib2. This patch changes the API to use stack allocation instead: ObjectPropertyIterator iter; object_property_iter_init(&iter, obj); while ((prop = object_property_iter_next(&iter))) { ... } Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [AF: Fused ObjectPropertyIterator struct with typedef] Signed-off-by: Andreas Färber <afaerber@suse.de>
2016-01-13error: Strip trailing '\n' from error string arguments (again)Markus Armbruster1-3/+3
Commit 6daf194d, be62a2eb and 312fd5f got rid of a bunch, but they keep coming back. Tracked down with the Coccinelle semantic patch from commit 312fd5f. Cc: Fam Zheng <famz@redhat.com> Cc: Peter Crosthwaite <crosthwaitepeter@gmail.com> Cc: Bharata B Rao <bharata@linux.vnet.ibm.com> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com> Cc: David Hildenbrand <dahi@linux.vnet.ibm.com> Cc: Jason J. Herne <jjherne@linux.vnet.ibm.com> Cc: Stefan Berger <stefanb@linux.vnet.ibm.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Changchun Ouyang <changchun.ouyang@intel.com> Cc: zhanghailiang <zhang.zhanghailiang@huawei.com> Cc: Pavel Fedin <p.fedin@samsung.com> Signed-off-by: Markus Armbruster <armbru@pond.sub.org> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Acked-by: Fam Zheng <famz@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1450452927-8346-17-git-send-email-armbru@redhat.com>
2016-01-11Merge remote-tracking branch ↵Peter Maydell1-1/+1
'remotes/mjt/tags/pull-trivial-patches-2016-01-11' into staging trivial patches for 2016-01-11 # gpg: Signature made Mon 11 Jan 2016 08:39:32 GMT using RSA key ID A4C3D7DB # gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>" # gpg: aka "Michael Tokarev <mjt@corpit.ru>" # gpg: aka "Michael Tokarev <mjt@debian.org>" * remotes/mjt/tags/pull-trivial-patches-2016-01-11: hw/s390x: Remove superfluous return statements hw/core/qdev: Remove superfluous return statement hw/acpi: Remove superfluous return statement hw/ide: Remove superfluous return statements osdep.h: Include glib-compat.h in osdep.h rather than qemu-common.h scripts/checkpatch.pl: Don't allow special cases of unspaced operators PCI Bonito: QOMify and cleanup SH PCI Host: convert to realize() gt64120: convert to realize() Add missing syscall nrs. according to more recent Linux kernels hw/misc/edu: Convert to realize() configure: fix trace backend check xen/Makefile.objs: simplify crypto: Fix typo in example MAINTAINERS: Add the correct device_tree.h file iscsi: fix readcapacity error message net: convert qemu_log to error_report, fix message linux-user: enable sigaltstack for all architectures unicore32: convert get_sp_from_cpustate from macro to inline Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-11net: convert qemu_log to error_report, fix messagePaolo Bonzini1-1/+1
Ensure that the error is printed with the proper timestamp. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-01-11l2tpv3: fix cookie decodingAlexis Dambricourt1-1/+1
If a 32 bits l2tpv3 frame cookie MSB if set to 1, the cast to uint64_t cookie will spread 1 to the four most significant bytes. Then the condition (cookie != s->rx_cookie) becomes false. Signed-off-by: Alexis Dambricourt <alexis.dambricourt@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-01-11net/filter: fix nf->netdev_id leakLi Zhijian1-0/+1
Cc: Jason Wang <jasowang@redhat.com> Cc: qemu-stable@nongnu.org Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-01-11net/dump: fix nfds->filename leakLi Zhijian1-0/+8
Cc: Jason Wang <jasowang@redhat.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Cc: qemu-stable@nongnu.org Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-12-17qapi: Don't let implicit enum MAX member collideEric Blake1-2/+2
Now that we guarantee the user doesn't have any enum values beginning with a single underscore, we can use that for our own purposes. Renaming ENUM_MAX to ENUM__MAX makes it obvious that the sentinel is generated. This patch was mostly generated by applying a temporary patch: |diff --git a/scripts/qapi.py b/scripts/qapi.py |index e6d014b..b862ec9 100644 |--- a/scripts/qapi.py |+++ b/scripts/qapi.py |@@ -1570,6 +1570,7 @@ const char *const %(c_name)s_lookup[] = { | max_index = c_enum_const(name, 'MAX', prefix) | ret += mcgen(''' | [%(max_index)s] = NULL, |+// %(max_index)s | }; | ''', | max_index=max_index) then running: $ cat qapi-{types,event}.c tests/test-qapi-types.c | sed -n 's,^// \(.*\)MAX,s|\1MAX|\1_MAX|g,p' > list $ git grep -l _MAX | xargs sed -i -f list The only things not generated are the changes in scripts/qapi.py. Rejecting enum members named 'MAX' is now useless, and will be dropped in the next patch. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1447836791-369-23-git-send-email-eblake@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> [Rebased to current master, commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-12-02vhost-user: verify that number of queues is non-zeroVictor Kaplansky1-0/+5
Fix QEMU crash when -netdev type=vhost-user,queues=n is passed with zero number of queues. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2015-11-27tap-win32: disable broken async write pathAndrew Baumann1-10/+36
The code under the TUN_ASYNCHRONOUS_WRITES path makes two incorrect assumptions about the behaviour of the WriteFile API for overlapped file handles. First, WriteFile does not update the lpNumberOfBytesWritten parameter when the write completes asynchronously (the number of bytes written is known only when the operation completes). Second, the buffer shouldn't be touched (or freed) until the operation completes. This led to at least one bug where tap_win32_write returned zero bytes written, which in turn caused further writes ("receives") to be disabled for that device. This change disables the asynchronous write path, while keeping most of the code around in case someone sees value in resurrecting it. It also adds some conditional debug output, similar to the read path. Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com> Acked-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-11-27tap-win32: skip unexpected nodes during registry enumerationAndrew Baumann1-1/+2
In order to find a named tap device, get_device_guid() enumerates children of HKLM\SYSTEM\CCS\Control\Network\{4D36E972-E325-11CE-BFC1-08002BE10318} (aka NETWORK_CONNECTIONS_KEY). For each child, it then looks for a "Connection" subkey, but if this key doesn't exist, it aborts the entire search. This was observed to fail on at least one Windows 10 machine, where there is an additional child of NETWORK_CONNECTIONS_KEY (named "Descriptions"). Since registry enumeration doesn't guarantee any particular sort order, we should continue to search for matching children rather than aborting the search. Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-11-25vhost-user: set link down when the char device is closedWen Congyang1-1/+1
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2015-11-18net: Convert net filter code to use object property iteratorsDaniel P. Berrange1-1/+4
Stop directly accessing the Object::properties field data structure and instead use the formal object property iterator APIs. This insulates the code from future data structure changes in the Object struct. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Tested-by: Pavel Fedin <p.fedin@samsung.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-11-12net: netmap: use error_setg() helpers in place of error_report()Vincenzo Maffione1-11/+11
This update was required to align error reporting of netmap backend initialization to the modifications introduced by commit a30ecde. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-11-12net: netmap: Fix compilation issueVincenzo Maffione1-1/+1
Reorganization of struct NetClientOptions (commit e4ba22b) caused a compilation failure of the netmap backend. This patch fixes the issue by properly accessing the union field. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-11-06tap-bsd: use user-specified tap device if it already existsEd Maste1-5/+33
Acked-by: Roger Pau Monné <roger.pau@citrix.com> Signed-off-by: Ed Maste <emaste@freebsd.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-11-02net: Convert to new qapi union layoutEric Blake10-32/+32
We have two issues with our qapi union layout: 1) Even though the QMP wire format spells the tag 'type', the C code spells it 'kind', requiring some hacks in the generator. 2) The C struct uses an anonymous union, which places all tag values in the same namespace as all non-variant members. This leads to spurious collisions if a tag value matches a non-variant member's name. Make the conversion to the new layout for net-related code. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1445898903-12082-18-git-send-email-eblake@redhat.com> [Commit message tweaked slightly] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-10-27net: free the string returned by object_get_canonical_path_componentYang Hongyang1-2/+3
The value returned from object_get_canonical_path_component must be freed. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-27net: make iov_to_buf take right size argument in nc_sendv_compat()Yang Hongyang1-1/+1
We want "buf, sizeof(buf)" here. sizeof(buffer) is the size of a pointer, which is wrong. Thanks to Paolo for pointing it out. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-27net: Remove duplicate data from query-rx-filter on multiqueue net devicesVladislav Yasevich1-0/+6
When responding to a query-rx-filter command on a multiqueue netdev, qemu reports the data for each queue. The data, however, is not per-queue, but per device and the same data is reported multiple times. This causes confusion and may also cause extra unnecessary processing when looking at the data. Commit 638fb14169 (net: Make qmp_query_rx_filter() with name argument more obvious) partially addresses this issue, by limiting the output when the name is specified. However, when the name is not specified, the issue still persists. Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-27net/dump: Provide the dumping facility as a net-filterThomas Huth1-1/+128
Use the net-filter infrastructure to provide the dumping functions for netdev devices, too. Reviewed-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-27net/dump: Separate the NetClientState from the DumpStateThomas Huth1-25/+49
With the upcoming dumping-via-netfilter patch, the DumpState should not be related to NetClientState anymore, so move the related information to a new struct called DumpNetClient. Reviewed-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-27net/dump: Rework net-dump init functionsThomas Huth1-14/+13
Move the creation of the dump client from net_dump_init() into net_init_dump(), so we can later use the former function for dump via netfilter, too. Also rename net_dump_init() to net_dump_state_init() to make it easier distinguishable from net_init_dump(). Reviewed-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-27net/dump: Add support for receive_iov functionThomas Huth1-3/+21
Adding a proper receive_iov function to the net dump module. This will make it easier to support the dump filter feature for the -netdev option in later patches. Reviewed-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-22vhost user: add rarp sending after live migration for legacy guestThibaut Collet1-2/+22
A new vhost user message is added to allow QEMU to ask to vhost user backend to broadcast a fake RARP after live migration for guest without GUEST_ANNOUNCE capability. This new message is sent only if the backend supports the new VHOST_USER_PROTOCOL_F_RARP protocol feature. The payload of this new message is the MAC address of the guest (not known by the backend). The MAC address is copied in the first 6 bytes of a u64 to avoid to create a new payload message type. This new message has no equivalent ioctl so a new callback is added in the userOps structure to send the request. Upon reception of this new message the vhost user backend must generate and broadcast a fake RARP request to notify the migration is terminated. Signed-off-by: Thibaut Collet <thibaut.collet@6wind.com> [Rebased and fixed checkpatch errors - Marc-André] Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
2015-10-22vhost user: add support of live migrationThibaut Collet1-2/+10
Some vhost user backends are able to support live migration. To provide this service the following features must be added: 1. Add the VIRTIO_NET_F_GUEST_ANNOUNCE capability to vhost-net when netdev backend is vhost-user. 2. Provide a nop receive callback to vhost-user. This callback is called by: * qemu_announce_self after a migration to send fake RARP to avoid network outage for peers talking to the migrated guest. - For guest with GUEST_ANNOUNCE capabilities, guest already sends GARP when the bit VIRTIO_NET_S_ANNOUNCE is set. => These packets must be discarded. - For guest without GUEST_ANNOUNCE capabilities, migration termination is notified when the guest sends packets. => These packets can be discarded. * virtio_net_tx_bh with a dummy boot to send fake bootp/dhcp request. BIOS guest manages virtio driver to send 4 bootp/dhcp request in case of dummy boot. => These packets must be discarded. Signed-off-by: Thibaut Collet <thibaut.collet@6wind.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
2015-10-22net: add trace_vhost_user_eventMarc-André Lureau1-2/+2
Replace error_report() and use tracing instead. It's not an error to get a connection or a disconnection, so silence this and trace it instead. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
2015-10-21net: don't set native endiannessMichael S. Tsirkin1-0/+8
commit 5be7d9f1b1452613b95c6ba70b8d7ad3d0797991 vhost-net: tell tap backend about the vnet endianness makes vhost net always try to set LE - even if that matches the native endian-ness. This makes it fail on older kernels on x86 without TUNSETVNETLE support. To fix, make qemu_set_vnet_le/qemu_set_vnet_be skip the ioctl if it matches the host endian-ness. Reported-by: Marcel Apfelbaum <marcel@redhat.com> Cc: Greg Kurz <gkurz@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
2015-10-12netfilter: add a netbuffer filterYang Hongyang2-0/+187
This filter is to buffer/release packets. Can be used when using MicroCheckpointing or other Remus like VM FT solutions. You can also use it to crudely simulate network delay. Doesn't actually delay individual packets, but batches them together, which is a delay of sorts. Usage: -netdev tap,id=bn0 -object filter-buffer,id=f0,netdev=bn0,queue=rx,interval=1000 NOTE: Interval is in microseconds, it can't be omitted currently, and can't be 0. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-12net/queue: export qemu_net_queue_append_iovYang Hongyang1-6/+6
This will be used by buffer filter implementation later to queue packets. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-12netfilter: print filter info associate with the netdevYang Hongyang2-0/+31
When execute "info network", print filter info also. add a info_str member to NetFilterState, store specific filters info. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-12netfilter: add an API to pass the packet to next filterYang Hongyang1-0/+58
add an API qemu_netfilter_pass_to_next() to pass the packet to next filter. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-12net/queue: introduce NetQueueDeliverFuncYang Hongyang2-4/+6
net/queue.c has logic to send/queue/flush packets but a qemu_deliver_packet_iov() call is hardcoded. Abstract this func so that we can use our own deliver function in netfilter. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-12net: merge qemu_deliver_packet and qemu_deliver_packet_iovYang Hongyang2-36/+21
qemu_deliver_packet_iov already have the compat delivery, we can drop qemu_deliver_packet. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-12netfilter: hook packets before net queue sendYang Hongyang2-0/+83
Capture packets that will be sent. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-10-12init/cleanup of netfilter objectYang Hongyang3-0/+146
Add a netfilter object based on QOM. A netfilter is attached to a netdev, captures all network packets that pass through the netdev. When we delete the netdev, we also delete the netfilter object attached to it, because if the netdev is removed, the filter which attached to it is useless. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2015-09-25Merge remote-tracking branch ↵Peter Maydell1-1/+1
'remotes/vivier-misc/tags/pull-muldiv64-20150925' into staging Remove muldiv64() by using period instead of frequency # gpg: Signature made Fri 25 Sep 2015 14:54:37 BST using RSA key ID 3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" # gpg: aka "Laurent Vivier <laurent@vivier.eu>" # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier-misc/tags/pull-muldiv64-20150925: net: remove muldiv64() bt: remove muldiv64() hpet: remove muldiv64() arm: clarify the use of muldiv64() openrisc: remove muldiv64() mips: remove muldiv64() pcnet: remove muldiv64() rtl8139: remove muldiv64() i6300esb: remove muldiv64() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-25net: remove muldiv64()Laurent Vivier1-1/+1
muldiv64() is used to convert nanoseconds to microseconds. x = muldiv64(qemu_clock_get_ns(..), 1000000, get_ticks_per_sec()); As get_ticks_per_sec() is 10^9, it can be replaced by: x = qemu_clock_get_us(..); Signed-off-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-09-24vhost-user: add multiple queue supportChangchun Ouyang1-48/+93
This patch is initially based a patch from Nikolay Nikolaev. This patch adds vhost-user multiple queue support, by creating a nc and vhost_net pair for each queue. Qemu exits if find that the backend can't support the number of requested queues (by providing queues=# option). The max number is queried by a new message, VHOST_USER_GET_QUEUE_NUM, and is sent only when protocol feature VHOST_USER_PROTOCOL_F_MQ is present first. The max queue check is done at vhost-user initiation stage. We initiate one queue first, which, in the meantime, also gets the max_queues the backend supports. In older version, it was reported that some messages are sent more times than necessary. Here we came an agreement with Michael that we could categorize vhost user messages to 2 types: non-vring specific messages, which should be sent only once, and vring specific messages, which should be sent per queue. Here I introduced a helper function vhost_user_one_time_request(), which lists following messages as non-vring specific messages: VHOST_USER_SET_OWNER VHOST_USER_RESET_DEVICE VHOST_USER_SET_MEM_TABLE VHOST_USER_GET_QUEUE_NUM For above messages, we simply ignore them when they are not sent the first time. Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: Jason Wang <jasowang@redhat.com> Tested-by: Marcel Apfelbaum <marcel@redhat.com>
2015-09-11trivial: remove trailing newline from error_reportJohn Snow1-2/+2
Minor cleanup. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-07-20net: Flush queued packets when guest resumesFam Zheng1-7/+12
Since commit 6e99c63 "net/socket: Drop net_socket_can_send" and friends, net queues need to be explicitly flushed after qemu_can_send_packet() returns false, because the netdev side will disable the polling of fd. This fixes the case of "cont" after "stop" (or migration). Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1436232067-29144-1-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-07-20socket: pass correct size in net_socket_send()Jason Wang1-1/+1
We should pass the size of packet instead of the remaining to qemu_send_packet_async(). Fixes: 6e99c631f116221d169ea53953d91b8aa74d297a ("net/socket: Drop net_socket_can_send") Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-id: 1436259656-24263-1-git-send-email-jasowang@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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