From patchwork Fri Aug 2 03:19:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1968105 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=IOivPY/7; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WZrhN5t7jz1ybX for ; Fri, 2 Aug 2024 13:21:08 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sZipj-0003ZJ-1a; Thu, 01 Aug 2024 23:19:59 -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 1sZipg-0003Nk-8M for qemu-devel@nongnu.org; Thu, 01 Aug 2024 23:19:56 -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 1sZipe-0008QM-MF for qemu-devel@nongnu.org; Thu, 01 Aug 2024 23:19:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1722568793; 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=hlVS0wk+yi4XQ7gjjjnTC+8gcRLIF1sX0foWefqDJ+g=; b=IOivPY/7VsbkMpVOpCEX7TZxH+h2G4CucUg7Kdru5VyiNd48soo9CAfWx2RXEbzp7jduIC DGllwzrPmQuy9AVpTbULhApkta+ruCgtL+47POjkpHv61rD4ta4dAhxcnTM/eiCon3jK8f FGFmxW8Vij7KWzSu3ooSXl0G9RGIf3s= Received: from mx-prod-mc-03.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-221-t5QoyAuBMwSnMNwKUVjwbg-1; Thu, 01 Aug 2024 23:19:49 -0400 X-MC-Unique: t5QoyAuBMwSnMNwKUVjwbg-1 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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 290801956064; Fri, 2 Aug 2024 03:19:46 +0000 (UTC) Received: from localhost.localdomain (unknown [10.72.112.229]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 087EE3000198; Fri, 2 Aug 2024 03:19:39 +0000 (UTC) From: Jason Wang To: qemu-devel@nongnu.org Cc: Akihiko Odaki , Zhibin Hu , qemu-stable@nongnu.org, "Michael S . Tsirkin" , Jason Wang Subject: [PULL 2/8] virtio-net: Ensure queue index fits with RSS Date: Fri, 2 Aug 2024 11:19:23 +0800 Message-ID: <20240802031929.44060-3-jasowang@redhat.com> In-Reply-To: <20240802031929.44060-1-jasowang@redhat.com> References: <20240802031929.44060-1-jasowang@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.131, 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_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Akihiko Odaki Ensure the queue index points to a valid queue when software RSS enabled. The new calculation matches with the behavior of Linux's TAP device with the RSS eBPF program. Fixes: 4474e37a5b3a ("virtio-net: implement RX RSS processing") Reported-by: Zhibin Hu Cc: qemu-stable@nongnu.org Signed-off-by: Akihiko Odaki Reviewed-by: Michael S. Tsirkin Signed-off-by: Jason Wang --- hw/net/virtio-net.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 8f30972708..5635620a31 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -1905,7 +1905,8 @@ static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf, if (!no_rss && n->rss_data.enabled && n->rss_data.enabled_software_rss) { int index = virtio_net_process_rss(nc, buf, size, &extra_hdr); if (index >= 0) { - NetClientState *nc2 = qemu_get_subqueue(n->nic, index); + NetClientState *nc2 = + qemu_get_subqueue(n->nic, index % n->curr_queue_pairs); return virtio_net_receive_rcu(nc2, buf, size, true); } }