From patchwork Wed Oct 11 09:21:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 13416958 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 213E8CD6E55 for ; Wed, 11 Oct 2023 09:28:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qqVQx-0007R9-5Q; Wed, 11 Oct 2023 05:23:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqVQr-0007KF-1P for qemu-devel@nongnu.org; Wed, 11 Oct 2023 05:23:09 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqVQp-0004yn-CL for qemu-devel@nongnu.org; Wed, 11 Oct 2023 05:23:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697016186; 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=szkfZFal3gRV6YMln02f04O1VbuVOGrG3KyiudA4Niw=; b=haV7APoPAfmwhtFo4meKFm6jmaaYh8OL0D3CO9mo0+U4r9zACO1wMwHtDoBBtWmBqQp/aT 8euemXiwuK+2GYZ2njHHzSDPAR/7w/B+YfnI6GfowAuv6+Z4nr+w0R2juCkhSB4t5FCKTQ nBV7aUm/f/qd6PgsFQ5be/gC4tbXFbw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-660-IM4KZtaJMsy0F_EqnmC8jQ-1; Wed, 11 Oct 2023 05:23:03 -0400 X-MC-Unique: IM4KZtaJMsy0F_EqnmC8jQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 3C968811E7B; Wed, 11 Oct 2023 09:23:03 +0000 (UTC) Received: from secure.mitica (unknown [10.39.195.75]) by smtp.corp.redhat.com (Postfix) with ESMTP id 82F801C060B0; Wed, 11 Oct 2023 09:23:01 +0000 (UTC) From: Juan Quintela To: qemu-devel@nongnu.org Cc: Laurent Vivier , Peter Xu , Paolo Bonzini , Markus Armbruster , Juan Quintela , Thomas Huth , Li Zhijian , Leonardo Bras , Eric Blake , Fabiano Rosas Subject: [PULL 28/65] migration/rdma: Fix qemu_get_cm_event_timeout() to always set error Date: Wed, 11 Oct 2023 11:21:26 +0200 Message-ID: <20231011092203.1266-29-quintela@redhat.com> In-Reply-To: <20231011092203.1266-1-quintela@redhat.com> References: <20231011092203.1266-1-quintela@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Markus Armbruster qemu_get_cm_event_timeout() neglects to set an error when it fails because rdma_get_cm_event() fails. Harmless, as its caller qemu_rdma_connect() substitutes a generic error then. Fix it anyway. qemu_rdma_connect() also sets the generic error when its own call of rdma_get_cm_event() fails. Make the error handling more obvious: set a specific error right after rdma_get_cm_event() fails. Delete the generic error. Signed-off-by: Markus Armbruster Reviewed-by: Peter Xu Reviewed-by: Li Zhijian Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Message-ID: <20230928132019.2544702-22-armbru@redhat.com> --- migration/rdma.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/migration/rdma.c b/migration/rdma.c index 9c576bdcba..0039295a15 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -2555,7 +2555,11 @@ static int qemu_get_cm_event_timeout(RDMAContext *rdma, ERROR(errp, "failed to poll cm event, errno=%i", errno); return -1; } else if (poll_fd.revents & POLLIN) { - return rdma_get_cm_event(rdma->channel, cm_event); + if (rdma_get_cm_event(rdma->channel, cm_event) < 0) { + ERROR(errp, "failed to get cm event"); + return -1; + } + return 0; } else { ERROR(errp, "no POLLIN event, revent=%x", poll_fd.revents); return -1; @@ -2605,6 +2609,9 @@ static int qemu_rdma_connect(RDMAContext *rdma, bool return_path, ret = qemu_get_cm_event_timeout(rdma, &cm_event, 5000, errp); } else { ret = rdma_get_cm_event(rdma->channel, &cm_event); + if (ret < 0) { + ERROR(errp, "failed to get cm event"); + } } if (ret) { /* @@ -2613,7 +2620,6 @@ static int qemu_rdma_connect(RDMAContext *rdma, bool return_path, * Will go away later in this series. */ perror("rdma_get_cm_event after rdma_connect"); - ERROR(errp, "connecting to destination!"); goto err_rdma_source_connect; }