From patchwork Wed Jan 7 17:37:43 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 1213 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 n07HXjFB024642 for ; Wed, 7 Jan 2009 09:33:45 -0800 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753428AbZAGRhS (ORCPT ); Wed, 7 Jan 2009 12:37:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753775AbZAGRhR (ORCPT ); Wed, 7 Jan 2009 12:37:17 -0500 Received: from g1t0029.austin.hp.com ([15.216.28.36]:9360 "EHLO g1t0029.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753428AbZAGRhP (ORCPT ); Wed, 7 Jan 2009 12:37:15 -0500 Received: from g1t0038.austin.hp.com (g1t0038.austin.hp.com [16.236.32.44]) by g1t0029.austin.hp.com (Postfix) with ESMTP id C12FB386F4; Wed, 7 Jan 2009 17:37:15 +0000 (UTC) Received: from ldl.fc.hp.com (ldl.fc.hp.com [15.11.146.30]) by g1t0038.austin.hp.com (Postfix) with ESMTP id A941230069; Wed, 7 Jan 2009 17:37:15 +0000 (UTC) Received: from localhost (ldl.fc.hp.com [127.0.0.1]) by ldl.fc.hp.com (Postfix) with ESMTP id 30C6139C010; Wed, 7 Jan 2009 10:37:15 -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 KGhRS8weZZPw; Wed, 7 Jan 2009 10:37:13 -0700 (MST) Received: from [10.91.73.10] (lart.fc.hp.com [15.11.146.31]) by ldl.fc.hp.com (Postfix) with ESMTP id 62D3E39C001; Wed, 7 Jan 2009 10:37:13 -0700 (MST) Subject: [PATCH 4/5][RFC] virti-net: Enable filtering based on MAC, promisc, broadcast and allmulti From: Alex Williamson To: kvm , qemu-devel Cc: Mark McLoughlin Organization: OSLO R&D Date: Wed, 07 Jan 2009 10:37:43 -0700 Message-Id: <1231349863.7109.83.camel@lappy> Mime-Version: 1.0 X-Mailer: Evolution 2.24.2 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org virti-net: Enable filtering based on MAC, promisc, broadcast and allmulti Signed-off-by: Alex Williamson --- 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/hw/virtio-net.c b/hw/virtio-net.c index 653cad4..fa8e71c 100644 --- a/hw/virtio-net.c +++ b/hw/virtio-net.c @@ -167,6 +167,25 @@ 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->status.bits.promisc) + return 1; + + if ((buf[0] & 1) && n->status.bits.allmulti) + return 1; + + if (!memcmp(buf, bcast, sizeof(bcast))) + return 1; + + if (!memcmp(buf, n->mac, 6)) + return 1; + + return 0; +} + static void virtio_net_receive(void *opaque, const uint8_t *buf, int size) { VirtIONet *n = opaque; @@ -176,6 +195,9 @@ 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);