From patchwork Wed Dec 16 06:48:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 11976805 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=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 54E0BC3526D for ; Wed, 16 Dec 2020 06:52:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 234A023371 for ; Wed, 16 Dec 2020 06:52:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726217AbgLPGwZ (ORCPT ); Wed, 16 Dec 2020 01:52:25 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:39219 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726212AbgLPGwY (ORCPT ); Wed, 16 Dec 2020 01:52:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1608101458; 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=Xl32/mo6T6OKk23f/V3h6Z3M7yIv1Tk47fxKQgFDkUg=; b=FFrgchgOv5rD0/UNyLwyVMoI0k/GG7SoGneIvg8Qed2kEcPIPD2hZJWrVL4Kch4O4Sn+tq Lx+CiLJGyOi+aMbBi5LHV02DGV6V+Xd6e78X9qtPcAA4tGAavZ7tJnzPpjdC+CFtahrgSU kQ+XONaANEFbj5VhyAW5AQbT9htlxYg= 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-510-PBlHIUTAMLezxYnT6GRv-A-1; Wed, 16 Dec 2020 01:50:55 -0500 X-MC-Unique: PBlHIUTAMLezxYnT6GRv-A-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F16CE800D62; Wed, 16 Dec 2020 06:50:53 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-12-210.pek2.redhat.com [10.72.12.210]) by smtp.corp.redhat.com (Postfix) with ESMTP id C82BD10013C1; Wed, 16 Dec 2020 06:50:43 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Cc: eperezma@redhat.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, lulu@redhat.com, eli@mellanox.com, lingshan.zhu@intel.com, rob.miller@broadcom.com, stefanha@redhat.com, sgarzare@redhat.com Subject: [PATCH 20/21] vdpa_sim: filter destination mac address Date: Wed, 16 Dec 2020 14:48:17 +0800 Message-Id: <20201216064818.48239-21-jasowang@redhat.com> In-Reply-To: <20201216064818.48239-1-jasowang@redhat.com> References: <20201216064818.48239-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch implements a simple unicast filter for vDPA simulator. Signed-off-by: Jason Wang --- drivers/vdpa/vdpa_sim/vdpa_sim.c | 49 ++++++++++++++++++++------------ 1 file changed, 31 insertions(+), 18 deletions(-) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index e901177c6dfe..fe90a783bde4 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -175,6 +175,22 @@ static void vdpasim_complete(struct vdpasim_virtqueue *vq, size_t len) local_bh_enable(); } +static bool receive_filter(struct vdpasim *vdpasim, size_t len) +{ + bool modern = vdpasim->features & (1ULL << VIRTIO_F_VERSION_1); + size_t hdr_len = modern ? sizeof(struct virtio_net_hdr_v1) : + sizeof(struct virtio_net_hdr); + + if (len < ETH_ALEN + hdr_len) + return false; + + if (!strncmp(vdpasim->buffer + hdr_len, + vdpasim->config.mac, ETH_ALEN)) + return true; + + return false; +} + static void vdpasim_work(struct work_struct *work) { struct vdpasim *vdpasim = container_of(work, struct @@ -182,7 +198,6 @@ static void vdpasim_work(struct work_struct *work) struct vdpasim_virtqueue *txq = &vdpasim->vqs[1]; struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0]; ssize_t read, write; - size_t total_write; int pkts = 0; int err; @@ -195,36 +210,34 @@ static void vdpasim_work(struct work_struct *work) goto out; while (true) { - total_write = 0; err = vringh_getdesc_iotlb(&txq->vring, &txq->out_iov, NULL, &txq->head, GFP_ATOMIC); if (err <= 0) break; + read = vringh_iov_pull_iotlb(&txq->vring, &txq->out_iov, + vdpasim->buffer, + PAGE_SIZE); + + if (!receive_filter(vdpasim, read)) { + vdpasim_complete(txq, 0); + continue; + } + err = vringh_getdesc_iotlb(&rxq->vring, NULL, &rxq->in_iov, &rxq->head, GFP_ATOMIC); if (err <= 0) { - vringh_complete_iotlb(&txq->vring, txq->head, 0); + vdpasim_complete(txq, 0); break; } - while (true) { - read = vringh_iov_pull_iotlb(&txq->vring, &txq->out_iov, - vdpasim->buffer, - PAGE_SIZE); - if (read <= 0) - break; - - write = vringh_iov_push_iotlb(&rxq->vring, &rxq->in_iov, - vdpasim->buffer, read); - if (write <= 0) - break; - - total_write += write; - } + write = vringh_iov_push_iotlb(&rxq->vring, &rxq->in_iov, + vdpasim->buffer, read); + if (write <= 0) + break; vdpasim_complete(txq, 0); - vdpasim_complete(rxq, total_write); + vdpasim_complete(rxq, write); if (++pkts > 4) { schedule_work(&vdpasim->work);