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[99.254.121.117]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6b2a5c466bfsm80844256d6.68.2024.06.19.15.30.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Jun 2024 15:30:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1718836264; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=27xJFRRKvK54skIyMMmN8RUpsUo90Pcr5piRqr+33Eg=; b=XM1YjGw24IkD8Y23Z00LpZkB2w1vzYfIszkvolQhL+bN/9dCdldjMGVvDpEG0gs+UA8oU/ mDf62xO4hbIW+ccM9Vi78KFc4fmxvcN4lKD/GDRj+JNevyNTcZlhjLkGWcP5aVXp2vt2gR EDPTvwUBXexjqDuynfM1FLplEQ2NJuw= X-MC-Unique: lqq_PWoJMLqSi4fHqL4LOw-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718836259; x=1719441059; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=27xJFRRKvK54skIyMMmN8RUpsUo90Pcr5piRqr+33Eg=; b=MEtO2QaRmpVJ4cn7sZyk3dZPWUs9jMheDYCR/vHH2uYh0rtLFMKfBHzrLZCq++1Esv I5VHiVT1VloeVdZGTfIoDdI2GRygLYaIEAW6Q5UxLXpuwx8rIuzYQhmhG5MO4xDk0uIL w8jhNClxANKlKJwuUOnRm9KgKdM5g+D2ltej+mxvOqbEpo8+4hbnTnY5ATqlv1+efl+3 U3jJYshH2/RyANIJLjEUnJLbYoPEm6SiBUYVIktktMACyZPzk9rXQ0XSR30ON3dUJxnH I5k0xJt6edGU5siIMm3w8eKSyDFM1XfjXsVrCe1hJCOGx9f/W+OH+ElsOEENn62LaXsJ eDYQ== X-Gm-Message-State: AOJu0Yy3U1fhK2KwLOweCCjgZWH0+2f8iYiUBTME/XqzgIc6j2hA/Bef TYmOH2Z6OpoQXs/oB/GmfD4STu5CxPIXIfClFzYesXzDI8Y+P1CVIeUew7AFafBQusJZenBMhcL voo/ZOUzwON/vu9i1541DHr5xt7dLG2aHQEHuDQrgrbovCorncYhOGX10l2tqMQAneBgQ35CFpN 0iZHPxWTf3XSCr7YXhRU+4BkRNrksigESkPw== X-Received: by 2002:a05:6830:1c45:b0:6fb:8c91:5969 with SMTP id 46e09a7af769-70075596c20mr3940776a34.2.1718836259415; Wed, 19 Jun 2024 15:30:59 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHHDXuLNbGboiDCcn8RUqKWsKIjQGWZZhpdcsSA28maRIqslrDXnUbrHVSVKs0PEWZZ/Ccd+Q== X-Received: by 2002:a05:6830:1c45:b0:6fb:8c91:5969 with SMTP id 46e09a7af769-70075596c20mr3940737a34.2.1718836258782; Wed, 19 Jun 2024 15:30:58 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Cc: Markus Armbruster , Bandan Das , Zhijian Li , Fabiano Rosas , Jiri Denemark , Prasad Pandit , Eric Blake , peterx@redhat.com Subject: [PATCH v3 04/11] migration: Cleanup incoming migration setup state change Date: Wed, 19 Jun 2024 18:30:39 -0400 Message-ID: <20240619223046.1798968-5-peterx@redhat.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240619223046.1798968-1-peterx@redhat.com> References: <20240619223046.1798968-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.144, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1718836371786100005 Content-Type: text/plain; charset="utf-8" Destination QEMU can setup incoming ports for two purposes: either a fresh new incoming migration, in which QEMU will switch to SETUP for channel establishment, or a paused postcopy migration, in which QEMU will stay in POSTCOPY_PAUSED until kicking off the RECOVER phase. Now the state machine worked on dest node for the latter, only because migrate_set_state() implicitly will become a noop if the current state check failed. It wasn't clear at all. Clean it up by providing a helper migration_incoming_state_setup() doing proper checks over current status. Postcopy-paused will be explicitly checked now, and then we can bail out for unknown states. Reviewed-by: Fabiano Rosas Signed-off-by: Peter Xu --- migration/migration.c | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 795b30f0d0..41a88fc50a 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -618,6 +618,29 @@ bool migrate_uri_parse(const char *uri, MigrationChann= el **channel, return true; } =20 +static bool +migration_incoming_state_setup(MigrationIncomingState *mis, Error **errp) +{ + MigrationStatus current =3D mis->state; + + if (current =3D=3D MIGRATION_STATUS_POSTCOPY_PAUSED) { + /* + * Incoming postcopy migration will stay in PAUSED state even if + * reconnection happened. + */ + return true; + } + + if (current !=3D MIGRATION_STATUS_NONE) { + error_setg(errp, "Illegal migration incoming state: %s", + MigrationStatus_str(current)); + return false; + } + + migrate_set_state(&mis->state, current, MIGRATION_STATUS_SETUP); + return true; +} + static void qemu_start_incoming_migration(const char *uri, bool has_channe= ls, MigrationChannelList *channels, Error **errp) @@ -656,8 +679,9 @@ static void qemu_start_incoming_migration(const char *u= ri, bool has_channels, return; } =20 - migrate_set_state(&mis->state, MIGRATION_STATUS_NONE, - MIGRATION_STATUS_SETUP); + if (!migration_incoming_state_setup(mis, errp)) { + return; + } =20 if (addr->transport =3D=3D MIGRATION_ADDRESS_TYPE_SOCKET) { SocketAddress *saddr =3D &addr->u.socket; --=20 2.45.0