From nobody Wed Nov 5 07:52:36 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1533288362453125.52769909338303; Fri, 3 Aug 2018 02:26:02 -0700 (PDT) Received: from localhost ([::1]:49808 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1flWLR-0002iP-BF for importer@patchew.org; Fri, 03 Aug 2018 05:26:01 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52933) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1flWA4-0001Xa-OK for qemu-devel@nongnu.org; Fri, 03 Aug 2018 05:14:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1flWA3-0001hs-C7 for qemu-devel@nongnu.org; Fri, 03 Aug 2018 05:14:16 -0400 Received: from mail-pl0-x232.google.com ([2607:f8b0:400e:c01::232]:43714) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1flWA3-0001fu-2U for qemu-devel@nongnu.org; Fri, 03 Aug 2018 05:14:15 -0400 Received: by mail-pl0-x232.google.com with SMTP id x6-v6so2297874plv.10 for ; Fri, 03 Aug 2018 02:14:15 -0700 (PDT) Received: from VM_120_46_centos.localdomain ([119.28.87.64]) by smtp.gmail.com with ESMTPSA id e21-v6sm7991352pfl.187.2018.08.03.02.14.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 03 Aug 2018 02:14:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=UaUc+NfHOvncluzDJkjXLlo2mSi7ZcHceZZz9mI6xM4=; b=jZCRlJKTTOUlGmSHLwAODgsO/AesyzG7phoGXK3YggKd7zsX5lkbXjDv4pmnuOTMn/ P3Abudrv41r0il7jRYbrLRSBnvmrNrgpu+qGWGUmulowmei8ATCBs/1klj2+twmCWUPD ifbhANoYaUJuSwzVgHX4mOI2RH1ADLK7mDs5tC1HTA2ED9WSDT/A6yYNSaYXEm/NXaIU ZDP5UEX7lCaxNJey+wv3/DkooniNm5Ac6lmN1II1jCiUDZgSC0t4F1dtQZ5oOllMc0iO avc4C/Lnjl72+d310BK29bmXjLO2keqzIXPHE9Y9aCVAdBOEuznQtr4bx5iIhCF5KLzZ BkhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=UaUc+NfHOvncluzDJkjXLlo2mSi7ZcHceZZz9mI6xM4=; b=UHD9htatJ0doZbU0itrSIuSwuivSPD+cGc6xt7/2y6wugSqGDmNjBs/QZCHvHj8vFf hXRHhT2yzcDxOWfTrM8cWGG5Nms+vMj6kDylSjYtxq9cQI7z39Vm+qP7RFpkT3Z6z22v OoUPNHpVP+NAyo2MFrUJwGlEqrXuSsUu6a52UeEonzluUCnxFCXUIX5R8G7fVTVGIOd6 YrpjWXywAPCSAQZcGewq3h6bRluxshz7CuxCcHWYhNVc02zZcSCxm6ghSur0kpd3ovpC QkuK1uKZ2hK9x/8D9m7mBm8xzn5H7j1w13zqxct0vdqS+wDdTdKtDqPFbKMzkUJoydyI La8w== X-Gm-Message-State: AOUpUlESAIiRnN/u+j8Df0LiJ4EP11PRdWOwXkZGmiOIaPo8wmFQL1hn mVEsc/s2tFTxQ0Hdrj2zTU8= X-Google-Smtp-Source: AAOMgpcRrohT5Lj78mcNI37y+qO2Sl3hZonrUNFB7z4zc4hPSpRjo1vMry0bEfNB3Zc/VIOgrL9tEw== X-Received: by 2002:a17:902:d906:: with SMTP id c6-v6mr2726015plz.65.1533287654263; Fri, 03 Aug 2018 02:14:14 -0700 (PDT) From: Lidong Chen X-Google-Original-From: Lidong Chen To: zhang.zhanghailiang@huawei.com, quintela@redhat.com, dgilbert@redhat.com Date: Fri, 3 Aug 2018 17:13:47 +0800 Message-Id: <1533287630-4221-10-git-send-email-lidongchen@tencent.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1533287630-4221-1-git-send-email-lidongchen@tencent.com> References: <1533287630-4221-1-git-send-email-lidongchen@tencent.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c01::232 Subject: [Qemu-devel] [PATCH v6 09/12] migration: implement the shutdown for RDMA QIOChannel X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lidong Chen , qemu-devel@nongnu.org, Lidong Chen Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDMRC_1 RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Lidong Chen Because RDMA QIOChannel not implement shutdown function, If the to_dst_file was set error, the return path thread will wait forever. and the migration thread will wait return path thread exit. the backtrace of return path thread is: (gdb) bt #0 0x00007f372a76bb0f in ppoll () from /lib64/libc.so.6 #1 0x000000000071dc24 in qemu_poll_ns (fds=3D0x7ef7091d0580, nfds=3D2,= timeout=3D100000000) at qemu-timer.c:325 #2 0x00000000006b2fba in qemu_rdma_wait_comp_channel (rdma=3D0xd424000) at migration/rdma.c:1501 #3 0x00000000006b3191 in qemu_rdma_block_for_wrid (rdma=3D0xd424000, w= rid_requested=3D4000, byte_len=3D0x7ef7091d0640) at migration/rdma.c:1580 #4 0x00000000006b3638 in qemu_rdma_exchange_get_response (rdma=3D0xd42= 4000, head=3D0x7ef7091d0720, expecting=3D3, idx=3D0) at migration/rdma.c:= 1726 #5 0x00000000006b3ad6 in qemu_rdma_exchange_recv (rdma=3D0xd424000, he= ad=3D0x7ef7091d0720, expecting=3D3) at migration/rdma.c:1903 #6 0x00000000006b5d03 in qemu_rdma_get_buffer (opaque=3D0x6a57dc0, buf= =3D0x5c80030 "", pos=3D8, size=3D32768) at migration/rdma.c:2714 #7 0x00000000006a9635 in qemu_fill_buffer (f=3D0x5c80000) at migration= /qemu-file.c:232 #8 0x00000000006a9ecd in qemu_peek_byte (f=3D0x5c80000, offset=3D0) at migration/qemu-file.c:502 #9 0x00000000006a9f1f in qemu_get_byte (f=3D0x5c80000) at migration/qe= mu-file.c:515 #10 0x00000000006aa162 in qemu_get_be16 (f=3D0x5c80000) at migration/qe= mu-file.c:591 #11 0x00000000006a46d3 in source_return_path_thread ( opaque=3D0xd826a0 ) at migration/migration= .c:1331 #12 0x00007f372aa49e25 in start_thread () from /lib64/libpthread.so.0 #13 0x00007f372a77635d in clone () from /lib64/libc.so.6 the backtrace of migration thread is: (gdb) bt #0 0x00007f372aa4af57 in pthread_join () from /lib64/libpthread.so.0 #1 0x00000000007d5711 in qemu_thread_join (thread=3D0xd826f8 ) at util/qemu-thread-posix.c:504 #2 0x00000000006a4bc5 in await_return_path_close_on_source ( ms=3D0xd826a0 ) at migration/migration.c:1= 460 #3 0x00000000006a53e4 in migration_completion (s=3D0xd826a0 , current_active_state=3D4, old_vm_running=3D0x7ef7089cf976, start_ti= me=3D0x7ef7089cf980) at migration/migration.c:1695 #4 0x00000000006a5c54 in migration_thread (opaque=3D0xd826a0 ) at migration/migration.c:1837 #5 0x00007f372aa49e25 in start_thread () from /lib64/libpthread.so.0 #6 0x00007f372a77635d in clone () from /lib64/libc.so.6 Signed-off-by: Lidong Chen Reviewed-by: Dr. David Alan Gilbert --- migration/rdma.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/migration/rdma.c b/migration/rdma.c index 673f126..1affc46 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -3039,6 +3039,45 @@ static int qio_channel_rdma_close(QIOChannel *ioc, return 0; } =20 +static int +qio_channel_rdma_shutdown(QIOChannel *ioc, + QIOChannelShutdown how, + Error **errp) +{ + QIOChannelRDMA *rioc =3D QIO_CHANNEL_RDMA(ioc); + RDMAContext *rdmain, *rdmaout; + + rcu_read_lock(); + + rdmain =3D atomic_rcu_read(&rioc->rdmain); + rdmaout =3D atomic_rcu_read(&rioc->rdmain); + + switch (how) { + case QIO_CHANNEL_SHUTDOWN_READ: + if (rdmain) { + rdmain->error_state =3D -1; + } + break; + case QIO_CHANNEL_SHUTDOWN_WRITE: + if (rdmaout) { + rdmaout->error_state =3D -1; + } + break; + case QIO_CHANNEL_SHUTDOWN_BOTH: + default: + if (rdmain) { + rdmain->error_state =3D -1; + } + if (rdmaout) { + rdmaout->error_state =3D -1; + } + break; + } + + rcu_read_unlock(); + return 0; +} + /* * Parameters: * @offset =3D=3D 0 : @@ -3865,6 +3904,7 @@ static void qio_channel_rdma_class_init(ObjectClass *= klass, ioc_klass->io_close =3D qio_channel_rdma_close; ioc_klass->io_create_watch =3D qio_channel_rdma_create_watch; ioc_klass->io_set_aio_fd_handler =3D qio_channel_rdma_set_aio_fd_handl= er; + ioc_klass->io_shutdown =3D qio_channel_rdma_shutdown; } =20 static const TypeInfo qio_channel_rdma_info =3D { --=20 1.8.3.1