{"id":2196232,"url":"http://patchwork.ozlabs.org/api/1.0/covers/2196232/?format=json","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.0/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260213071042.3733239-1-lulu@redhat.com>","date":"2026-02-13T07:08:00","name":"[RFC,0/5] net/filter-redirector: Add AF_PACKET support for vhost-net","submitter":{"id":78960,"url":"http://patchwork.ozlabs.org/api/1.0/people/78960/?format=json","name":"Cindy Lu","email":"lulu@redhat.com"},"series":[{"id":492063,"url":"http://patchwork.ozlabs.org/api/1.0/series/492063/?format=json","date":"2026-02-13T07:08:05","name":"net/filter-redirector: Add AF_PACKET support for vhost-net","version":1,"mbox":"http://patchwork.ozlabs.org/series/492063/mbox/"}],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=CXuzVTXs;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1770966656;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:mime-version:mime-version:\n content-transfer-encoding:content-transfer-encoding;\n bh=aAeo8Qp29w58NpL2Ar0gIFc3G/2b+aZ7G1Yo/rVw+Uk=;\n b=CXuzVTXsEhjoaqVLA5NnDn00BYoGd4wkg0PQXgSRCn1G7fNyZa5SUUtNljKx2eHedHPMuG\n mt3qTzyxPTaL4pgEMqm1bIhHewytGrSnV35S4icmiNvnKhnxeR3Qo8pm1u53y4cxJDTO8W\n BwhRy+NPy4Se9HHLEdSnN9z52WFkTqI=","X-MC-Unique":"Wq8vh4GPPTy-4gSJFhrtcA-1","X-Mimecast-MFC-AGG-ID":"Wq8vh4GPPTy-4gSJFhrtcA_1770966650","From":"Cindy Lu ","To":"lulu@redhat.com, mst@redhat.com, jasowang@redhat.com, zhangckid@gmail.com,\n lizhijian@fujitsu.com, qemu-devel@nongnu.org","Subject":"[RFC 0/5] net/filter-redirector: Add AF_PACKET support for vhost-net","Date":"Fri, 13 Feb 2026 15:08:00 +0800","Message-ID":"<20260213071042.3733239-1-lulu@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=170.10.133.124; envelope-from=lulu@redhat.com;\n 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,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n 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":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"This series extends filter-redirector to support vhost-net backends by\nintroducing AF_PACKET based packet capture and injection.\n\nTODO\n========\nThis series introduces basic support for filter-redirector, enabling\nsimple mirroring of VM1's ingress traffic to VM2's mirror port. \nAdditional functionality including filter_buffer and other filter features\nwill be added in following versions.\n\nExample Usage\n=============\nPrimary VM (mirror incoming packets to secondary via chardev socket):\n\n -netdev tap,id=net0,vhost=on,...\n -chardev socket,id=mirror0,host=...,port=...,server=on,wait=off\n -object filter-redirector,id=vm1redir,netdev=net0,in_netdev=net0,outdev=mirror0\n\nSecondary VM (receive mirrored packets):\n\n -chardev socket,id=red0,host=...,port=...,reconnect-ms=1000\n -object filter-redirector,id=vm2redir,netdev=net0,indev=red0,out_netdev=net0\n\nTesting\n=======\n- Tested with vhost=on/off TAP netdev on x86_64\n\nCindy Lu (5):\n net/filter: Allow redirector on vhost backends\n net/filter-redirector: add in/out_netdev properties\n net/filter-redirector: Add AF_PACKET sockets initialization\n net/filter-redirector: add AF_PACKET redirect datapath\n qapi: add in/out_netdev to filter-redirector\n\n net/filter-mirror.c | 460 +++++++++++++++++++++++++++++++++++++++++---\n net/filter.c | 6 +-\n qapi/qom.json | 19 +-\n 3 files changed, 459 insertions(+), 26 deletions(-)"}