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Thu, 25 Jan 2024 08:25:58 -0800 From: Avihai Horon To: CC: Peter Xu , Fabiano Rosas , "Avihai Horon" Subject: [PATCH 17/17] migration/postcopy: Use the new migration channel connect API for postcopy preempt Date: Thu, 25 Jan 2024 18:25:28 +0200 Message-ID: <20240125162528.7552-18-avihaih@nvidia.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20240125162528.7552-1-avihaih@nvidia.com> References: <20240125162528.7552-1-avihaih@nvidia.com> MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF000099DC:EE_|CH3PR12MB8971:EE_ X-MS-Office365-Filtering-Correlation-Id: e2313c2e-b42e-4651-7f01-08dc1dc25756 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233; 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envelope-from=avihaih@nvidia.com; helo=NAM11-CO1-obe.outbound.protection.outlook.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.5, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Use the new migration channel connect API for postcopy preempt and remove old channel connect code. Signed-off-by: Avihai Horon --- migration/postcopy-ram.h | 2 +- migration/postcopy-ram.c | 105 +++++++++++++++------------------------ 2 files changed, 42 insertions(+), 65 deletions(-) diff --git a/migration/postcopy-ram.h b/migration/postcopy-ram.h index 442ab89752..c1b7d9be6d 100644 --- a/migration/postcopy-ram.h +++ b/migration/postcopy-ram.h @@ -192,7 +192,7 @@ enum PostcopyChannels { }; void postcopy_preempt_new_channel(MigrationIncomingState *mis, QEMUFile *file); -void postcopy_preempt_setup(MigrationState *s); +int postcopy_preempt_setup(MigrationState *s); int postcopy_preempt_establish_channel(MigrationState *s); #endif diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c index 3df937e7da..1d80acc7b4 100644 --- a/migration/postcopy-ram.c +++ b/migration/postcopy-ram.c @@ -34,9 +34,9 @@ #include "exec/ramblock.h" #include "socket.h" #include "yank_functions.h" -#include "tls.h" #include "qemu/userfaultfd.h" #include "qemu/mmap-alloc.h" +#include "channel.h" #include "options.h" /* Arbitrary limit on size of each discard command, @@ -1620,65 +1620,6 @@ void postcopy_preempt_new_channel(MigrationIncomingState *mis, QEMUFile *file) trace_postcopy_preempt_new_channel(); } -/* - * Setup the postcopy preempt channel with the IOC. If ERROR is specified, - * setup the error instead. This helper will free the ERROR if specified. - */ -static void -postcopy_preempt_send_channel_done(MigrationState *s, - QIOChannel *ioc, Error *local_err) -{ - if (local_err) { - migrate_set_error(s, local_err); - error_free(local_err); - } else { - migration_ioc_register_yank(ioc); - s->postcopy_qemufile_src = qemu_file_new_output(ioc); - trace_postcopy_preempt_new_channel(); - } - - /* - * Kick the waiter in all cases. The waiter should check upon - * postcopy_qemufile_src to know whether it failed or not. - */ - qemu_sem_post(&s->postcopy_qemufile_src_sem); -} - -static void postcopy_preempt_tls_handshake(QIOChannel *ioc, gpointer opaque, - Error *err) -{ - MigrationState *s = opaque; - - postcopy_preempt_send_channel_done(s, ioc, err); - object_unref(ioc); -} - -static void -postcopy_preempt_send_channel_new(QIOTask *task, gpointer opaque) -{ - g_autoptr(QIOChannel) ioc = QIO_CHANNEL(qio_task_get_source(task)); - MigrationState *s = opaque; - Error *local_err = NULL; - - if (qio_task_propagate_error(task, &local_err)) { - goto out; - } - - if (migrate_channel_requires_tls_upgrade(ioc)) { - if (!migration_tls_channel_connect(ioc, "preempt", s->hostname, - postcopy_preempt_tls_handshake, s, - false, &local_err)) { - goto out; - } - /* Setup the channel until TLS handshake finished */ - return; - } - -out: - /* This handles both good and error cases */ - postcopy_preempt_send_channel_done(s, ioc, local_err); -} - /* * This function will kick off an async task to establish the preempt * channel, and wait until the connection setup completed. Returns 0 if @@ -1697,7 +1638,9 @@ int postcopy_preempt_establish_channel(MigrationState *s) * setup phase of migration (even if racy in an unreliable network). */ if (!s->preempt_pre_7_2) { - postcopy_preempt_setup(s); + if (postcopy_preempt_setup(s)) { + return -1; + } } /* @@ -1709,10 +1652,44 @@ int postcopy_preempt_establish_channel(MigrationState *s) return s->postcopy_qemufile_src ? 0 : -1; } -void postcopy_preempt_setup(MigrationState *s) +/* + * Setup the postcopy preempt channel with the IOC. If ERROR is specified, + * setup the error instead. This helper will free the ERROR if specified. + */ +static void postcopy_preempt_send_channel_new_callback(QIOChannel *ioc, + void *opaque, Error *err) +{ + MigrationState *s = opaque; + + if (err) { + migrate_set_error(s, err); + error_free(err); + } else { + migration_ioc_register_yank(ioc); + s->postcopy_qemufile_src = qemu_file_new_output(ioc); + trace_postcopy_preempt_new_channel(); + } + + /* + * Kick the waiter in all cases. The waiter should check upon + * postcopy_qemufile_src to know whether it failed or not. + */ + qemu_sem_post(&s->postcopy_qemufile_src_sem); + object_unref(OBJECT(ioc)); +} + +int postcopy_preempt_setup(MigrationState *s) { - /* Kick an async task to connect */ - socket_send_channel_create(postcopy_preempt_send_channel_new, s); + Error *local_err = NULL; + + if (!migration_channel_connect(postcopy_preempt_send_channel_new_callback, + "preempt", s, false, &local_err)) { + migrate_set_error(s, local_err); + error_report_err(local_err); + return -1; + } + + return 0; } static void postcopy_pause_ram_fast_load(MigrationIncomingState *mis)