From patchwork Wed Oct 11 09:21:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 13416950 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 4FBC7CD6E51 for ; Wed, 11 Oct 2023 09:25:07 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qqVR9-0008Od-Jf; Wed, 11 Oct 2023 05:23:27 -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 1qqVR7-00087i-Dw for qemu-devel@nongnu.org; Wed, 11 Oct 2023 05:23:25 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqVQw-00050T-Es for qemu-devel@nongnu.org; Wed, 11 Oct 2023 05:23:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697016192; 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=T7fslpI+dX1ojdIlQPOK+gy83IxxlkK1Y8sFsRgg9sw=; b=MNo5I9sPL9fouWBI+//rY4siK3T3PEiCSkRM2RnFExuedhHt7fJSwuYIbPciCW/L9X2ZNS 7SPWSa1sue/Ag+ZXhYBJgybmmL0DSmaCmopYu1eyIAm9r5OprVf3YGw1nLsnq4zRU2I53m AuLy7zYTtRqDixhRAkGLCb5y1MnvTQU= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-7-1NV6pbMZPwq3kgWumjVyzw-1; Wed, 11 Oct 2023 05:22:59 -0400 X-MC-Unique: 1NV6pbMZPwq3kgWumjVyzw-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 3BFA13814583; Wed, 11 Oct 2023 09:22:59 +0000 (UTC) Received: from secure.mitica (unknown [10.39.195.75]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7D10A1C060AE; Wed, 11 Oct 2023 09:22:57 +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 26/65] migration/rdma: Replace dangerous macro CHECK_ERROR_STATE() Date: Wed, 11 Oct 2023 11:21:24 +0200 Message-ID: <20231011092203.1266-27-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=170.10.129.124; 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_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: 2.1.29 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 Hiding return statements in macros is a bad idea. Use a function instead, and open code the return part. Signed-off-by: Markus Armbruster Reviewed-by: Fabiano Rosas Reviewed-by: Li Zhijian Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Message-ID: <20230928132019.2544702-20-armbru@redhat.com> --- migration/rdma.c | 43 +++++++++++++++++++++++++++---------------- 1 file changed, 27 insertions(+), 16 deletions(-) diff --git a/migration/rdma.c b/migration/rdma.c index 18be228e3b..30e2c817f2 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -85,18 +85,6 @@ */ static uint32_t known_capabilities = RDMA_CAPABILITY_PIN_ALL; -#define CHECK_ERROR_STATE() \ - do { \ - if (rdma->error_state) { \ - if (!rdma->error_reported) { \ - error_report("RDMA is in an error state waiting migration" \ - " to abort!"); \ - rdma->error_reported = true; \ - } \ - return rdma->error_state; \ - } \ - } while (0) - /* * A work request ID is 64-bits and we split up these bits * into 3 parts: @@ -451,6 +439,16 @@ typedef struct QEMU_PACKED { uint64_t chunks; /* how many sequential chunks to register */ } RDMARegister; +static int check_error_state(RDMAContext *rdma) +{ + if (rdma->error_state && !rdma->error_reported) { + error_report("RDMA is in an error state waiting migration" + " to abort!"); + rdma->error_reported = true; + } + return rdma->error_state; +} + static void register_to_network(RDMAContext *rdma, RDMARegister *reg) { RDMALocalBlock *local_block; @@ -3268,7 +3266,10 @@ static int qemu_rdma_save_page(QEMUFile *f, ram_addr_t block_offset, return -EIO; } - CHECK_ERROR_STATE(); + ret = check_error_state(rdma); + if (ret) { + return ret; + } qemu_fflush(f); @@ -3574,7 +3575,10 @@ static int qemu_rdma_registration_handle(QEMUFile *f) return -EIO; } - CHECK_ERROR_STATE(); + ret = check_error_state(rdma); + if (ret) { + return ret; + } local = &rdma->local_ram_blocks; do { @@ -3878,6 +3882,7 @@ static int qemu_rdma_registration_start(QEMUFile *f, { QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f)); RDMAContext *rdma; + int ret; if (migration_in_postcopy()) { return 0; @@ -3889,7 +3894,10 @@ static int qemu_rdma_registration_start(QEMUFile *f, return -EIO; } - CHECK_ERROR_STATE(); + ret = check_error_state(rdma); + if (ret) { + return ret; + } trace_qemu_rdma_registration_start(flags); qemu_put_be64(f, RAM_SAVE_FLAG_HOOK); @@ -3920,7 +3928,10 @@ static int qemu_rdma_registration_stop(QEMUFile *f, return -EIO; } - CHECK_ERROR_STATE(); + ret = check_error_state(rdma); + if (ret) { + return ret; + } qemu_fflush(f); ret = qemu_rdma_drain_cq(rdma);