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 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 5BC72CEE327 for ; Tue, 18 Nov 2025 15:49:18 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vLNww-00052y-VO; Tue, 18 Nov 2025 10:48:59 -0500 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 1vLNvu-0004au-8n for qemu-devel@nongnu.org; Tue, 18 Nov 2025 10:48:11 -0500 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 1vLNvs-0001us-S2 for qemu-devel@nongnu.org; Tue, 18 Nov 2025 10:47:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1763480872; 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=MbGOVueTX9DUaLsVj+a+6vgmHY+pg2JzMr0b9qjbJCQ=; b=hYvjEXQ9nvuhH1M3D9bMvaZgOLj0fhIRGORFmYz7D2VWhX9scezo7rhXMysxhVifPIsWY7 hcgeWvk3iOMvIWjxgxBmeQWiI8GkPfmVClEa+18Jn/qW9N1ncmuv8KJ3sqrs2PMIz7hVbS 0c815vB4zXUt1S7l86SlX2AGS7oysy0= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-213-_a8yZfZCP2e3bNwc3JZeTA-1; Tue, 18 Nov 2025 10:47:44 -0500 X-MC-Unique: _a8yZfZCP2e3bNwc3JZeTA-1 X-Mimecast-MFC-AGG-ID: _a8yZfZCP2e3bNwc3JZeTA_1763480863 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 6CD111977017 for ; Tue, 18 Nov 2025 15:47:21 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.45.242.18]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2064B3003777 for ; Tue, 18 Nov 2025 15:47:20 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 2451E21E66EF; Tue, 18 Nov 2025 16:47:18 +0100 (CET) From: Markus Armbruster To: qemu-devel@nongnu.org Cc: jasowang@redhat.com, mst@redhat.com, berrange@redhat.com Subject: [PATCH 3/3] ebpf: Make ebpf_rss_load() return value consistent with @errp Date: Tue, 18 Nov 2025 16:47:18 +0100 Message-ID: <20251118154718.3969982-4-armbru@redhat.com> In-Reply-To: <20251118154718.3969982-1-armbru@redhat.com> References: <20251118154718.3969982-1-armbru@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-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 ebpf_rss_load() returns false for failure without setting an Error when its @ctx argument already has an eBPF program loaded. This is wrong. Fortunately, it is only called @ctx has a program. Replace the incorrect error check by an assertion. The return value is now obviously reliable. Change the caller to use it, because it's more concise. Signed-off-by: Markus Armbruster --- ebpf/ebpf_rss.c | 4 +--- hw/net/virtio-net.c | 4 +--- 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/ebpf/ebpf_rss.c b/ebpf/ebpf_rss.c index b64e9da3e3..926392b3c5 100644 --- a/ebpf/ebpf_rss.c +++ b/ebpf/ebpf_rss.c @@ -106,9 +106,7 @@ bool ebpf_rss_load(struct EBPFRSSContext *ctx, Error **errp) { struct rss_bpf *rss_bpf_ctx; - if (ebpf_rss_is_loaded(ctx)) { - return false; - } + g_assert(!ebpf_rss_is_loaded(ctx)); rss_bpf_ctx = rss_bpf__open(); if (rss_bpf_ctx == NULL) { diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 3b85560f6f..f5d93eb400 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -1363,9 +1363,7 @@ static bool virtio_net_load_ebpf(VirtIONet *n, Error **errp) return virtio_net_load_ebpf_fds(n, errp); } - ebpf_rss_load(&n->ebpf_rss, &err); - /* Beware, ebpf_rss_load() can return false with @err unset */ - if (err) { + if (!ebpf_rss_load(&n->ebpf_rss, &err)) { warn_report_err(err); } return true; -- 2.49.0