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bh=L9QE8mwk5GY7edOuLm3/DrFaaaobWNNTb2ZcS+1k7gg=; b=Brv1gj3AbHSbNtQ89yFvfJZk86wIDGF+G6qAIXtRN0Vz0vJCa7rOX8EvbmMIKayZjarYMs 9kMRVk6PTAvJInmGMC6956k6F3sNDAGLLL+I0CPxRSXLpAiTq5R2pQJLJgXRIROwrf/Y6U kcZwM0fRlv8QNOHYINRcTR2u4NHleOc= X-MC-Unique: 7QCrUhxTO62l90BdTcx5Hg-1 From: Juan Quintela To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, Paolo Bonzini , Vladimir Sementsov-Ogievskiy , Fam Zheng , Cleber Rosa , Eric Blake , Li Zhijian , Peter Xu , Markus Armbruster , John Snow , Stefan Hajnoczi , Juan Quintela , Leonardo Bras , Laurent Vivier , Fabiano Rosas , Thomas Huth , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PULL 38/38] migration/multifd: Clarify Error usage in multifd_channel_connect Date: Mon, 16 Oct 2023 12:07:06 +0200 Message-ID: <20231016100706.2551-39-quintela@redhat.com> In-Reply-To: <20231016100706.2551-1-quintela@redhat.com> References: <20231016100706.2551-1-quintela@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1697451166243100003 From: Fabiano Rosas The function is currently called from two sites, one always gives it a NULL Error and the other always gives it a non-NULL Error. In the non-NULL case, all it does it trace the error and return. One of the callers already have tracing, add a tracepoint to the other and stop passing the error into the function. Cc: Markus Armbruster Signed-off-by: Fabiano Rosas Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Message-ID: <20231012134343.23757-4-farosas@suse.de> --- migration/multifd.c | 60 ++++++++++++++++++++---------------------- migration/trace-events | 3 ++- 2 files changed, 30 insertions(+), 33 deletions(-) diff --git a/migration/multifd.c b/migration/multifd.c index c92955de41..1fe53d3b98 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -775,7 +775,7 @@ out: =20 static bool multifd_channel_connect(MultiFDSendParams *p, QIOChannel *ioc, - Error *error); + Error **errp); =20 static void multifd_tls_outgoing_handshake(QIOTask *task, gpointer opaque) @@ -784,21 +784,22 @@ static void multifd_tls_outgoing_handshake(QIOTask *t= ask, QIOChannel *ioc =3D QIO_CHANNEL(qio_task_get_source(task)); Error *err =3D NULL; =20 - if (qio_task_propagate_error(task, &err)) { - trace_multifd_tls_outgoing_handshake_error(ioc, error_get_pretty(e= rr)); - } else { + if (!qio_task_propagate_error(task, &err)) { trace_multifd_tls_outgoing_handshake_complete(ioc); + if (multifd_channel_connect(p, ioc, &err)) { + return; + } } =20 - if (!multifd_channel_connect(p, ioc, err)) { - /* - * Error happen, mark multifd_send_thread status as 'quit' althoug= h it - * is not created, and then tell who pay attention to me. - */ - p->quit =3D true; - qemu_sem_post(&multifd_send_state->channels_ready); - qemu_sem_post(&p->sem_sync); - } + trace_multifd_tls_outgoing_handshake_error(ioc, error_get_pretty(err)); + + /* + * Error happen, mark multifd_send_thread status as 'quit' although it + * is not created, and then tell who pay attention to me. + */ + p->quit =3D true; + qemu_sem_post(&multifd_send_state->channels_ready); + qemu_sem_post(&p->sem_sync); } =20 static void *multifd_tls_handshake_thread(void *opaque) @@ -814,7 +815,7 @@ static void *multifd_tls_handshake_thread(void *opaque) return NULL; } =20 -static void multifd_tls_channel_connect(MultiFDSendParams *p, +static bool multifd_tls_channel_connect(MultiFDSendParams *p, QIOChannel *ioc, Error **errp) { @@ -824,7 +825,7 @@ static void multifd_tls_channel_connect(MultiFDSendPara= ms *p, =20 tioc =3D migration_tls_client_create(ioc, hostname, errp); if (!tioc) { - return; + return false; } =20 object_unref(OBJECT(ioc)); @@ -834,31 +835,25 @@ static void multifd_tls_channel_connect(MultiFDSendPa= rams *p, qemu_thread_create(&p->thread, "multifd-tls-handshake-worker", multifd_tls_handshake_thread, p, QEMU_THREAD_JOINABLE); + return true; } =20 static bool multifd_channel_connect(MultiFDSendParams *p, QIOChannel *ioc, - Error *error) + Error **errp) { trace_multifd_set_outgoing_channel( ioc, object_get_typename(OBJECT(ioc)), - migrate_get_current()->hostname, error); + migrate_get_current()->hostname); =20 - if (error) { - return false; - } if (migrate_channel_requires_tls_upgrade(ioc)) { - multifd_tls_channel_connect(p, ioc, &error); - if (!error) { - /* - * tls_channel_connect will call back to this - * function after the TLS handshake, - * so we mustn't call multifd_send_thread until then - */ - return true; - } else { - return false; - } + /* + * tls_channel_connect will call back to this + * function after the TLS handshake, + * so we mustn't call multifd_send_thread until then + */ + return multifd_tls_channel_connect(p, ioc, errp); + } else { migration_ioc_register_yank(ioc); p->registered_yank =3D true; @@ -897,11 +892,12 @@ static void multifd_new_send_channel_async(QIOTask *t= ask, gpointer opaque) p->c =3D ioc; qio_channel_set_delay(p->c, false); p->running =3D true; - if (multifd_channel_connect(p, ioc, local_err)) { + if (multifd_channel_connect(p, ioc, &local_err)) { return; } } =20 + trace_multifd_new_send_channel_async_error(p->id, local_err); multifd_new_send_channel_cleanup(p, ioc, local_err); } =20 diff --git a/migration/trace-events b/migration/trace-events index 403cc1ae11..fa9486dffe 100644 --- a/migration/trace-events +++ b/migration/trace-events @@ -125,6 +125,7 @@ postcopy_preempt_reset_channel(void) "" =20 # multifd.c multifd_new_send_channel_async(uint8_t id) "channel %u" +multifd_new_send_channel_async_error(uint8_t id, void *err) "channel=3D%u = err=3D%p" multifd_recv(uint8_t id, uint64_t packet_num, uint32_t used, uint32_t flag= s, uint32_t next_packet_size) "channel %u packet_num %" PRIu64 " pages %u f= lags 0x%x next packet size %u" multifd_recv_new_channel(uint8_t id) "channel %u" multifd_recv_sync_main(long packet_num) "packet num %ld" @@ -144,7 +145,7 @@ multifd_send_thread_start(uint8_t id) "%u" multifd_tls_outgoing_handshake_start(void *ioc, void *tioc, const char *ho= stname) "ioc=3D%p tioc=3D%p hostname=3D%s" multifd_tls_outgoing_handshake_error(void *ioc, const char *err) "ioc=3D%p= err=3D%s" multifd_tls_outgoing_handshake_complete(void *ioc) "ioc=3D%p" -multifd_set_outgoing_channel(void *ioc, const char *ioctype, const char *h= ostname, void *err) "ioc=3D%p ioctype=3D%s hostname=3D%s err=3D%p" +multifd_set_outgoing_channel(void *ioc, const char *ioctype, const char *h= ostname) "ioc=3D%p ioctype=3D%s hostname=3D%s" =20 # migration.c await_return_path_close_on_source_close(void) "" --=20 2.41.0