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[99.254.121.117]) by smtp.gmail.com with ESMTPSA id af79cd13be357-798abc07501sm449643685a.89.2024.06.17.11.15.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Jun 2024 11:15:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1718648149; 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=p42qzqR5kciw8JLdqJ1YJNv4+ai0V2jb43gqFLRGij4=; b=D48H8++VplGVlteZvH3M+ijbJEc7XPgGZcw7EuI/aRfZV571H6MWdppY7Lh7X52GWJwLDm lxXeIL54EZWBlyyKiBAe94Reya3NfVx/wNY7K58be5k8fxivSnDOeVRUgTuYeWIoAloSKV 4kDDllkmJUYz40oNxXML4k5VHsyLrS0= X-MC-Unique: arLO_fd-Pm-z-W4mYy-scQ-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718648145; x=1719252945; 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=p42qzqR5kciw8JLdqJ1YJNv4+ai0V2jb43gqFLRGij4=; b=ddOf4ffHs3GOyP3sIzG9sCGmWwWTUfSl7Xfwr3GfsEQrvJzLQndF3mVXSNcjzTL3+3 wVF5JG+IyV3b98nOpxBOWEA4W/YXWvFWRfMQs4bT9KdQMciUBOxeQCvKoDe3ES34yG5U 2o0Wh8ocWxHVKz5XElKc9ZpNzlll/V432DUJlgDBq0Rf4FrhbIrlkgcdRB5qvw81eg/6 y5ICx4SLQWchy+v5OrSbiJmfoIOlj4STaRk4sRwAYbhMYcWZ+k5/Cr+3xx0LOcCfoXse MAD2rFGL+awCdfwSRFCbz/4i3bOPcxfDojO4jd0jmuNo6Y9XE+kN+x4EOGVdYZunyS9c cV/Q== X-Gm-Message-State: AOJu0YwNFq7p2lGTwysKeaF4Eqi+KWnk5KgVwCY+gWaTa7YXVX+oVtMK H2oE84AnT++GwFnltDzb8+bQEM+ffVlOLZwVyHa3QuElcAndbKCLCO/nT8XdFX++soTMry1A2Y/ qfZG7EFUfgTk5EC3DFG2v2lopIycPQVKn6Ff7Ma+2PQjyM3g6v3LF40/VIVY9+hhypKGsr54Fmv l46D6RgldsFxSV4dZefyFKeyuL/i2JDInPCw== X-Received: by 2002:a05:620a:2b85:b0:798:cf0f:b523 with SMTP id af79cd13be357-798d23c4660mr1304576085a.2.1718648144890; Mon, 17 Jun 2024 11:15:44 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFYn2ssArX0+Ktm0J1BKUoHy0VUXD62Zc3f3EcClrd9yoX/KpzHPw+oip+dGMS/s1RDQiPwaA== X-Received: by 2002:a05:620a:2b85:b0:798:cf0f:b523 with SMTP id af79cd13be357-798d23c4660mr1304572285a.2.1718648144270; Mon, 17 Jun 2024 11:15:44 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Cc: Thomas Huth , Markus Armbruster , Laurent Vivier , Fabiano Rosas , Eric Blake , Prasad Pandit , peterx@redhat.com, Jiri Denemark , Bandan Das Subject: [PATCH v2 04/10] migration: Cleanup incoming migration setup state change Date: Mon, 17 Jun 2024 14:15:28 -0400 Message-ID: <20240617181534.1425179-5-peterx@redhat.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240617181534.1425179-1-peterx@redhat.com> References: <20240617181534.1425179-1-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=170.10.129.124; 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=-0.148, 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: 1718648287215100001 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. Signed-off-by: Peter Xu Reviewed-by: Fabiano Rosas --- migration/migration.c | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 75c9d80e8e..59442181a1 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -595,6 +595,29 @@ 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) @@ -633,8 +656,9 @@ 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