From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77DCDC48BE5 for ; Tue, 15 Jun 2021 21:21:04 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E361160FDA for ; Tue, 15 Jun 2021 21:21:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E361160FDA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42282 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ltGUY-0004BT-Qq for qemu-devel@archiver.kernel.org; Tue, 15 Jun 2021 17:21:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58600) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ltFzK-0003I1-0X for qemu-devel@nongnu.org; Tue, 15 Jun 2021 16:48:47 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:46574) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ltFzA-0001HE-I7 for qemu-devel@nongnu.org; Tue, 15 Jun 2021 16:48:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1623790115; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jCYU+dUTh+hdt/nbwoaF3c2Xc8nUzuwyD+IQEyyXs/o=; b=Iob/rCovU/1WC9mSTz334wKz8reZjwbqky77f1vjxJ7lXEmkh6FlJBcT54t3gHvRaT1qWD DtDj2w3Yre9x4wnsA/Xe2fE7N6qubbigz1gLTwJgyRUCIxncpJd3hfRQuBZESvKnwcgmwY eIBr2qxYLwf6pF32FQqMyOuENzDqFPY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-355-HqerLBgKMu-yIf7qKR33qw-1; Tue, 15 Jun 2021 16:48:34 -0400 X-MC-Unique: HqerLBgKMu-yIf7qKR33qw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 37A82FC97; Tue, 15 Jun 2021 20:48:33 +0000 (UTC) Received: from blue.redhat.com (ovpn-114-191.phx2.redhat.com [10.3.114.191]) by smtp.corp.redhat.com (Postfix) with ESMTP id C05F85D9CA; Tue, 15 Jun 2021 20:48:32 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Subject: [PULL 33/34] block/nbd: add nbd_client_connected() helper Date: Tue, 15 Jun 2021 15:47:55 -0500 Message-Id: <20210615204756.281505-34-eblake@redhat.com> In-Reply-To: <20210615204756.281505-1-eblake@redhat.com> References: <20210615204756.281505-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eblake@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.197, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Vladimir Sementsov-Ogievskiy , "open list:Network Block Dev..." , Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Vladimir Sementsov-Ogievskiy We already have two similar helpers for other state. Let's add another one for convenience. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Eric Blake Message-Id: <20210610100802.5888-32-vsementsov@virtuozzo.com> Signed-off-by: Eric Blake --- block/nbd.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/block/nbd.c b/block/nbd.c index 5e7e238b4790..5cfb749e089d 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -122,15 +122,20 @@ static void nbd_clear_bdrvstate(BlockDriverState *bs) s->x_dirty_bitmap = NULL; } +static bool nbd_client_connected(BDRVNBDState *s) +{ + return qatomic_load_acquire(&s->state) == NBD_CLIENT_CONNECTED; +} + static void nbd_channel_error(BDRVNBDState *s, int ret) { if (ret == -EIO) { - if (qatomic_load_acquire(&s->state) == NBD_CLIENT_CONNECTED) { + if (nbd_client_connected(s)) { s->state = s->reconnect_delay ? NBD_CLIENT_CONNECTING_WAIT : NBD_CLIENT_CONNECTING_NOWAIT; } } else { - if (qatomic_load_acquire(&s->state) == NBD_CLIENT_CONNECTED) { + if (nbd_client_connected(s)) { qio_channel_shutdown(s->ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL); } s->state = NBD_CLIENT_QUIT; @@ -228,7 +233,7 @@ static void nbd_client_attach_aio_context(BlockDriverState *bs, * s->connection_co is either yielded from nbd_receive_reply or from * nbd_co_reconnect_loop() */ - if (qatomic_load_acquire(&s->state) == NBD_CLIENT_CONNECTED) { + if (nbd_client_connected(s)) { qio_channel_attach_aio_context(QIO_CHANNEL(s->ioc), new_context); } @@ -499,7 +504,7 @@ static coroutine_fn void nbd_connection_entry(void *opaque) nbd_co_reconnect_loop(s); } - if (qatomic_load_acquire(&s->state) != NBD_CLIENT_CONNECTED) { + if (!nbd_client_connected(s)) { continue; } @@ -578,7 +583,7 @@ static int nbd_co_send_request(BlockDriverState *bs, qemu_co_queue_wait(&s->free_sema, &s->send_mutex); } - if (qatomic_load_acquire(&s->state) != NBD_CLIENT_CONNECTED) { + if (!nbd_client_connected(s)) { rc = -EIO; goto err; } @@ -605,8 +610,7 @@ static int nbd_co_send_request(BlockDriverState *bs, if (qiov) { qio_channel_set_cork(s->ioc, true); rc = nbd_send_request(s->ioc, request); - if (qatomic_load_acquire(&s->state) == NBD_CLIENT_CONNECTED && - rc >= 0) { + if (nbd_client_connected(s) && rc >= 0) { if (qio_channel_writev_all(s->ioc, qiov->iov, qiov->niov, NULL) < 0) { rc = -EIO; @@ -931,7 +935,7 @@ static coroutine_fn int nbd_co_do_receive_one_chunk( s->requests[i].receiving = true; qemu_coroutine_yield(); s->requests[i].receiving = false; - if (qatomic_load_acquire(&s->state) != NBD_CLIENT_CONNECTED) { + if (!nbd_client_connected(s)) { error_setg(errp, "Connection closed"); return -EIO; } @@ -1090,7 +1094,7 @@ static bool nbd_reply_chunk_iter_receive(BDRVNBDState *s, NBDReply local_reply; NBDStructuredReplyChunk *chunk; Error *local_err = NULL; - if (qatomic_load_acquire(&s->state) != NBD_CLIENT_CONNECTED) { + if (!nbd_client_connected(s)) { error_setg(&local_err, "Connection closed"); nbd_iter_channel_error(iter, -EIO, &local_err); goto break_loop; @@ -1115,8 +1119,7 @@ static bool nbd_reply_chunk_iter_receive(BDRVNBDState *s, } /* Do not execute the body of NBD_FOREACH_REPLY_CHUNK for simple reply. */ - if (nbd_reply_is_simple(reply) || - qatomic_load_acquire(&s->state) != NBD_CLIENT_CONNECTED) { + if (nbd_reply_is_simple(reply) || !nbd_client_connected(s)) { goto break_loop; } -- 2.31.1