From patchwork Fri Jan 16 21:10:20 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 2886 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n0GL81kX016122 for ; Fri, 16 Jan 2009 13:08:01 -0800 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761905AbZAPVMQ (ORCPT ); Fri, 16 Jan 2009 16:12:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1762291AbZAPVMQ (ORCPT ); Fri, 16 Jan 2009 16:12:16 -0500 Received: from g5t0006.atlanta.hp.com ([15.192.0.43]:4355 "EHLO g5t0006.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761905AbZAPVMO (ORCPT ); Fri, 16 Jan 2009 16:12:14 -0500 Received: from g4t0009.houston.hp.com (g4t0009.houston.hp.com [16.234.32.26]) by g5t0006.atlanta.hp.com (Postfix) with ESMTP id 84B9AC631; Fri, 16 Jan 2009 21:12:14 +0000 (UTC) Received: from ldl.fc.hp.com (ldl.fc.hp.com [15.11.146.30]) by g4t0009.houston.hp.com (Postfix) with ESMTP id A182BC041; Fri, 16 Jan 2009 21:12:12 +0000 (UTC) Received: from localhost (ldl.fc.hp.com [127.0.0.1]) by ldl.fc.hp.com (Postfix) with ESMTP id 6239C39C00D; Fri, 16 Jan 2009 14:12:12 -0700 (MST) X-Virus-Scanned: Debian amavisd-new at ldl.fc.hp.com Received: from ldl.fc.hp.com ([127.0.0.1]) by localhost (ldl.fc.hp.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id URAjXi4iGiXh; Fri, 16 Jan 2009 14:12:11 -0700 (MST) Received: from kvm.aw (lart.fc.hp.com [15.11.146.31]) by ldl.fc.hp.com (Postfix) with ESMTP id 3863639C071; Fri, 16 Jan 2009 14:12:11 -0700 (MST) From: Alex Williamson Subject: [PATCH 5/7] qemu:virtio-net: Enable filtering based on MAC, promisc, broadcast and allmulti To: kvm@vger.kernel.org Cc: qemu-devel@nongnu.org, markmc@redhat.com Date: Fri, 16 Jan 2009 14:10:20 -0700 Message-ID: <20090116211020.16725.2766.stgit@kvm.aw> In-Reply-To: <20090116210954.16725.44321.stgit@kvm.aw> References: <20090116210954.16725.44321.stgit@kvm.aw> User-Agent: StGIT/0.14.2 MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Make use of the new RX_MODE control virtqueue class by dropping packets the guest doesn't want to see. Signed-off-by: Alex Williamson --- qemu/hw/virtio-net.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/qemu/hw/virtio-net.c b/qemu/hw/virtio-net.c index d34c299..bb5348a 100644 --- a/qemu/hw/virtio-net.c +++ b/qemu/hw/virtio-net.c @@ -293,6 +293,25 @@ static int receive_header(VirtIONet *n, struct iovec *iov, int iovcnt, return offset; } +static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) +{ + static uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + + if (n->promisc) + return 1; + + if ((buf[0] & 1) && n->allmulti) + return 1; + + if (!memcmp(buf, bcast, sizeof(bcast))) + return 1; + + if (!memcmp(buf, n->mac, ETH_ALEN)) + return 1; + + return 0; +} + static void virtio_net_receive(void *opaque, const uint8_t *buf, int size) { VirtIONet *n = opaque; @@ -302,6 +321,9 @@ static void virtio_net_receive(void *opaque, const uint8_t *buf, int size) if (!do_virtio_net_can_receive(n, size)) return; + if (!receive_filter(n, buf, size)) + return; + /* hdr_len refers to the header we supply to the guest */ hdr_len = n->mergeable_rx_bufs ? sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr);