From patchwork Sun Nov 15 11:36:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukas Straub X-Patchwork-Id: 1400430 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=web.de Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; secure) header.d=web.de header.i=@web.de header.a=rsa-sha256 header.s=dbaedf251592 header.b=OAqw/Zzj; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4CYqxV612lz9sRK for ; Sun, 15 Nov 2020 22:39:42 +1100 (AEDT) Received: from localhost ([::1]:57572 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1keGNg-0008TA-Me for incoming@patchwork.ozlabs.org; Sun, 15 Nov 2020 06:39:40 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57040) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1keGKU-0005A1-Da; Sun, 15 Nov 2020 06:36:22 -0500 Received: from mout.web.de ([212.227.15.3]:51063) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1keGKS-0008HQ-9Z; Sun, 15 Nov 2020 06:36:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1605440174; bh=aOQZxDWLmA3ottt++HvQsb09XxJx64I2LDDCqr2+C3Q=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=OAqw/ZzjdvuCZ9tSBiXHSAw38C+gcz5IiFPpMNjav/t1dPIQn0onvVb02HG6r1Oc3 42aue7wf9M4Ybri2XvI0mPqL7GvvHVp8Y/IoSw6Bw8CHgLony0GfWGjqOd+ndY1I1e CQlVUtOVl0pg72/kjjCoPHpHPATjb+NacVMqA9S8= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from luklap ([87.123.206.172]) by smtp.web.de (mrweb004 [213.165.67.108]) with ESMTPSA (Nemesis) id 0MP2Sl-1kbDvV0KRz-006R2I; Sun, 15 Nov 2020 12:36:14 +0100 Date: Sun, 15 Nov 2020 12:36:13 +0100 From: Lukas Straub To: qemu-devel Subject: [PATCH v11 4/7] migration: Add yank feature Message-ID: <483f47c06989ca8bf39ec2fd2233f429c677c5c9.1605439674.git.lukasstraub2@web.de> In-Reply-To: References: MIME-Version: 1.0 X-Provags-ID: V03:K1:mWoH5/HcwcRKM0Np/7jisdUpxLgKel3/Bq2HWGoTcCiZebGz5Tp uvgm0fKpERkMbprrEYRTEWGXBIHUd4E2w2pPFwLJVkdCZpc0ROdRP73UrkD0I897tRGzax+ rf73ehmMZwE/BwfcjizC63s2psBZmR8yQBBC1DgMzDluFvBcMn0PfRyfC+BzijXaiQ8ZjfV 4bY/7bYzTyvS+RICl9+4w== X-UI-Out-Filterresults: notjunk:1;V03:K0:0ZyHuWxBLxo=:JCYFZnJgMItf++0oi9Bqss 0G9wUwQ9d3cit890S4mi/vDiARro3Yhpzt64HM82GKfStRjkKesCO5x3I1CxL6Kke8P9trGyX 8bluvtM0zSwcj4ewXEbIl8ex1B07tkYlXnDUA2qMZ9TpyHbcyxst0PEjSbcxPysei02RaUAdk zKR+oiUU+BMzIhGgm6MbnOoWZ4BiX4vUjyZV+gWBSjfZGuw2FnBccgKl4D958n7schD1E6lXM gxEc5dXNd/J1RsvlezhMZmoxXlDHS7ThWrfUMnJEAwlRM0DvNI5lthPuowf/11vXRacnwLKh9 iixiWz3cHxzq77AIIJU56rCWw8V0h98pLX8gIT8m5ynIcEBIarP76Dm4ndihYNeqCPFF+jchb bX2zTyZUXQ8X4O876as8mq4h7PNMUK+Q/2pwn299oFDhgPsNj0M5n3+s3nhlqhA9AdNO59kxB 9uutchKVqH6oomaIvoG8crMd/GeKOKbmFK3JHgs38WJA9+VS2gehhcuAcqQMPBhN488GJH63L U2dBsUW+3vhCu2vtJee8dy70sLvt+Egl83NWS+fflgcSjI19mlDS+XgjgVEeGlAtL5jmUVocp I0gFgVE+qokk2fsVMAAnl2ajK0ktqerbSE+wfZgLeBeOWNr15H0StdQT/fE16pQz5nD8BMYoI hiWT9FXfowV9rlHy+aJJguFO/07SvMkuK7CVKLIBtU9LKDiE3B5RsHMxeBvkQZkgFVZTqpgWY EvZUgUdM4Y9BBU9xle249Qs1TYMbQRq3P6JhUjDTy7OAjWepQ8OUmiOvYYX2pkEqxg/ng3oB2 Q69RVd7WUzf1yvW5mRKL8FZL+GAVQE8/ODM6xZ7OSlKPDRjYgdYt1ijmD6zTgYvBnpI99/kIH /UBilirGGYYGmeYnV/ig== Received-SPF: pass client-ip=212.227.15.3; envelope-from=lukasstraub2@web.de; helo=mout.web.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/15 06:36:18 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , "Daniel P. =?utf-8?b?QmVycmFuZ8Op?= " , qemu-block , Juan Quintela , Markus Armbruster , "Dr. David Alan Gilbert" , Max Reitz , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9?= Lureau Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Register yank functions on sockets to shut them down. Signed-off-by: Lukas Straub Acked-by: Stefan Hajnoczi Acked-by: Dr. David Alan Gilbert --- migration/channel.c | 13 +++++++++++++ migration/migration.c | 25 +++++++++++++++++++++++++ migration/multifd.c | 10 ++++++++++ migration/qemu-file-channel.c | 7 +++++++ migration/savevm.c | 6 ++++++ 5 files changed, 61 insertions(+) -- 2.20.1 diff --git a/migration/channel.c b/migration/channel.c index 8a783baa0b..35fe234e9c 100644 --- a/migration/channel.c +++ b/migration/channel.c @@ -18,6 +18,8 @@ #include "trace.h" #include "qapi/error.h" #include "io/channel-tls.h" +#include "io/channel-socket.h" +#include "qemu/yank.h" /** * @migration_channel_process_incoming - Create new incoming migration channel @@ -35,6 +37,11 @@ void migration_channel_process_incoming(QIOChannel *ioc) trace_migration_set_incoming_channel( ioc, object_get_typename(OBJECT(ioc))); + if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) { + yank_register_function(MIGRATION_YANK_INSTANCE, yank_generic_iochannel, + QIO_CHANNEL(ioc)); + } + if (s->parameters.tls_creds && *s->parameters.tls_creds && !object_dynamic_cast(OBJECT(ioc), @@ -67,6 +74,12 @@ void migration_channel_connect(MigrationState *s, ioc, object_get_typename(OBJECT(ioc)), hostname, error); if (!error) { + if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) { + yank_register_function(MIGRATION_YANK_INSTANCE, + yank_generic_iochannel, + QIO_CHANNEL(ioc)); + } + if (s->parameters.tls_creds && *s->parameters.tls_creds && !object_dynamic_cast(OBJECT(ioc), diff --git a/migration/migration.c b/migration/migration.c index 87a9b59f83..a5add9d17d 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -56,6 +56,7 @@ #include "net/announce.h" #include "qemu/queue.h" #include "multifd.h" +#include "qemu/yank.h" #ifdef CONFIG_VFIO #include "hw/vfio/vfio-common.h" @@ -252,6 +253,8 @@ void migration_incoming_state_destroy(void) qapi_free_SocketAddressList(mis->socket_address_list); mis->socket_address_list = NULL; } + + yank_unregister_instance(MIGRATION_YANK_INSTANCE); } static void migrate_generate_event(int new_state) @@ -429,8 +432,14 @@ void qemu_start_incoming_migration(const char *uri, Error **errp) { const char *p = NULL; + yank_register_instance(MIGRATION_YANK_INSTANCE, errp); + if (*errp) { + return; + } + qapi_event_send_migration(MIGRATION_STATUS_SETUP); if (!strcmp(uri, "defer")) { + yank_unregister_instance(MIGRATION_YANK_INSTANCE); deferred_incoming_migration(errp); } else if (strstart(uri, "tcp:", &p) || strstart(uri, "unix:", NULL) || @@ -445,6 +454,7 @@ void qemu_start_incoming_migration(const char *uri, Error **errp) } else if (strstart(uri, "fd:", &p)) { fd_start_incoming_migration(p, errp); } else { + yank_unregister_instance(MIGRATION_YANK_INSTANCE); error_setg(errp, "unknown migration protocol: %s", uri); } } @@ -1750,6 +1760,7 @@ static void migrate_fd_cleanup(MigrationState *s) } notifier_list_notify(&migration_state_notifiers, s); block_cleanup_parameters(s); + yank_unregister_instance(MIGRATION_YANK_INSTANCE); } static void migrate_fd_cleanup_schedule(MigrationState *s) @@ -2024,6 +2035,7 @@ void qmp_migrate_recover(const char *uri, Error **errp) * only re-setup the migration stream and poke existing migration * to continue using that newly established channel. */ + yank_unregister_instance(MIGRATION_YANK_INSTANCE); qemu_start_incoming_migration(uri, errp); } @@ -2161,6 +2173,13 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, return; } + if (!(has_resume && resume)) { + yank_register_instance(MIGRATION_YANK_INSTANCE, errp); + if (*errp) { + return; + } + } + if (strstart(uri, "tcp:", &p) || strstart(uri, "unix:", NULL) || strstart(uri, "vsock:", NULL)) { @@ -2174,6 +2193,9 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, } else if (strstart(uri, "fd:", &p)) { fd_start_outgoing_migration(s, p, &local_err); } else { + if (!(has_resume && resume)) { + yank_unregister_instance(MIGRATION_YANK_INSTANCE); + } error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "uri", "a valid migration protocol"); migrate_set_state(&s->state, MIGRATION_STATUS_SETUP, @@ -2183,6 +2205,9 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, } if (local_err) { + if (!(has_resume && resume)) { + yank_unregister_instance(MIGRATION_YANK_INSTANCE); + } migrate_fd_error(s, local_err); error_propagate(errp, local_err); return; diff --git a/migration/multifd.c b/migration/multifd.c index 45c690aa11..1a1e589064 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -25,6 +25,9 @@ #include "trace.h" #include "multifd.h" +#include "qemu/yank.h" +#include "io/channel-socket.h" + /* Multiple fd's */ #define MULTIFD_MAGIC 0x11223344U @@ -974,6 +977,13 @@ int multifd_load_cleanup(Error **errp) for (i = 0; i < migrate_multifd_channels(); i++) { MultiFDRecvParams *p = &multifd_recv_state->params[i]; + if (object_dynamic_cast(OBJECT(p->c), TYPE_QIO_CHANNEL_SOCKET) + && OBJECT(p->c)->ref == 1) { + yank_unregister_function(MIGRATION_YANK_INSTANCE, + yank_generic_iochannel, + QIO_CHANNEL(p->c)); + } + object_unref(OBJECT(p->c)); p->c = NULL; qemu_mutex_destroy(&p->mutex); diff --git a/migration/qemu-file-channel.c b/migration/qemu-file-channel.c index d2ce32f4b9..afc3a7f642 100644 --- a/migration/qemu-file-channel.c +++ b/migration/qemu-file-channel.c @@ -27,6 +27,7 @@ #include "qemu-file.h" #include "io/channel-socket.h" #include "qemu/iov.h" +#include "qemu/yank.h" static ssize_t channel_writev_buffer(void *opaque, @@ -104,6 +105,12 @@ static int channel_close(void *opaque, Error **errp) int ret; QIOChannel *ioc = QIO_CHANNEL(opaque); ret = qio_channel_close(ioc, errp); + if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET) + && OBJECT(ioc)->ref == 1) { + yank_unregister_function(MIGRATION_YANK_INSTANCE, + yank_generic_iochannel, + QIO_CHANNEL(ioc)); + } object_unref(OBJECT(ioc)); return ret; } diff --git a/migration/savevm.c b/migration/savevm.c index 5f937a2762..1a3808998e 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -62,6 +62,7 @@ #include "migration/colo.h" #include "qemu/bitmap.h" #include "net/announce.h" +#include "qemu/yank.h" const unsigned int postcopy_ram_discard_version; @@ -3008,6 +3009,11 @@ int load_snapshot(const char *name, Error **errp) qemu_system_reset(SHUTDOWN_CAUSE_NONE); mis->from_src_file = f; + yank_register_instance(MIGRATION_YANK_INSTANCE, errp); + if (*errp) { + ret = -EINVAL; + goto err_drain; + } aio_context_acquire(aio_context); ret = qemu_loadvm_state(f); migration_incoming_state_destroy();