From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 159D1A04F3 for ; Tue, 7 Jan 2020 18:37:44 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 5FAA11D9E6; Tue, 7 Jan 2020 18:37:42 +0100 (CET) Received: from mail-wr1-f53.google.com (mail-wr1-f53.google.com [209.85.221.53]) by dpdk.org (Postfix) with ESMTP id BB9BA1D545 for ; Sat, 4 Jan 2020 08:25:08 +0100 (CET) Received: by mail-wr1-f53.google.com with SMTP id q10so5384682wrm.11 for ; Fri, 03 Jan 2020 23:25:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=maOKWbUoJbBcazNhlPQl2W2YSDgWPlsbYzbnpluYPZ4=; b=WzNC4Kf5Mhs5F5QWlrZlPYjEU3t1gn41JCEjYQwzXWNhTMtu1ETLybqfPZS0fp4bRE ILwa2D5xiHdw4IhhboOjs0evJXLTb/zYLaZiZBEv8Jl6ZhSdNLc+Od1ueR7pnte9O0Nq gqmPY1dA4mWtfuUUlvU1+zxvZ/KR5LmOP9kDKt+IvB7XBfQ+MWRvTIVSbqXHdXcl1KyV dDV2jg7lIlhis84HDh58hAqqoSD+i3PLe7BkfCuPrHhQg2rTgvLbJY47wKiRuuS5Xw9D bE4fjyMOtQXSryqFLs3ONNx5WuYcAem42AIAHuX696xYdnn1A3Za6aj2VNzqjYjuic1T EVOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=maOKWbUoJbBcazNhlPQl2W2YSDgWPlsbYzbnpluYPZ4=; b=cCdBTQv3JF9bLUgav6d4oD3bKTM2V9LN5AvLskSQuxm8LTUm8xtKLoWDueV6Uw/O0X Lkfr/lJgNbTTEO4Ea0lEvrbUYdG/tiA5FXB4HJwRqdf7aV9zpM8BDTmbYa4PFn1uVouQ 1pX3pePg+RCHfjiIgfM/+Iy5OJJ6BMAHSD5bSsE6eTHBlj4JUv7Uo5S2b8Vg4OAUI3Y5 KAS9UQ/7r2ECqkP7cX3uHOBj2JKnyzaORMgYIVXTI5+ctckf7+zhS6IxTBMEwvcCwJBN xQqYr8JPyB+ASzsBQTB4tu3+aqsWYz4UHJtcJWIa68xfTvQZh14mtlC47DlYVOED9okC kcfw== X-Gm-Message-State: APjAAAU1MVkT3Bpoqwtjk2RJI2hWnW54eIk/ijteg3tmaR7ALzMnBgFB ncPFFai47vd0ooURt2jqB9yueWEc588yJuWlnAqEkG0p X-Google-Smtp-Source: APXvYqyDnHXpmAgfQmnBK/ozxUl2eydt4o8/F5tn/VUqdUPt9OMIJBGTAU6TVBORlbrMlSHjCZXidzt1X14ceQv2ZuM= X-Received: by 2002:a5d:488c:: with SMTP id g12mr90822110wrq.67.1578122708076; Fri, 03 Jan 2020 23:25:08 -0800 (PST) MIME-Version: 1.0 From: Rohit kamble Date: Sat, 4 Jan 2020 12:54:56 +0530 Message-ID: To: users@dpdk.org X-Mailman-Approved-At: Tue, 07 Jan 2020 18:37:41 +0100 Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] l2fwd application are not sending continuous packets . X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" Hello Dpdk Team, I'm facing issue while forwarding packets in DPDK's l2fwd application. While sending 1 Lac packets from Scapy, I could see sometimes packets are sending from one VM to another VM. Before explaining issue let me explain topology. *Topology :-=======*1) I am having 4 VMs(Virtual Machines) in same host. All these VM are running on Ubuntu 16.04.1. 2) VM-1 is used as Scapy to forward packets (Scapy version 2.4.3) . While creating packets I am giving destination mac(d-mac) address of VM-1. 3) In VM-2 am running L2 forwarding application. In this l2fwd application, I am doing simple packet forwarding by statically keeping mac address of VM-3. Code :- l2fwd_mac_updating () { ... ...... ....... *((uint64_t *)tmp) = 0xddccbbaa/*VM-3 mac address*/ + ((uint64_t)dest_portid << 40); } 4) Also in VM-3, I am doing same like VM-2, but I kept mac address of VM-4 5) In VM-4, I am using wireshark to see packets coming from VM-3. 6) In VM-2 and VM-3, I kept promiscuous mode off by commenting out rte_eth_promiscuous_enable(). --------------- --------------------- ------------------ ------------------------ | VM-1 | ----------> | VM-2 | ----------------> | VM-3 | ------------------> | VM-4 | --------------- --------------------- ------------------ ------------------------ Scapy Simple L2 forwarding Simple L2 forwarding Wireshark used for sending packets Sending all packets to Sending all packets to VM-3 VM-4 (DPDK) (DPDK) *Problem :- ======*== >From scapy VM, I am sending 1 lac packets with rate of 100 packets per second. *During problematic condition I could see packets are not getting forward from VM-3.**Problematic state is happening anytime after sending 1k packets.* This issue is not consistence but I could see this issue 8 out of 10 times. * Debugging and Observations :-=========================* When I tried to debug this issue , I could see that 1) In problematic state, rx queue of VM-3 is not getting packets, but VM-2 is sending packets properly. I checked this by using pdump of rx queue. 2) Just before problematic state in VM-3, I could see that previous packet(only one packet) instead of going to VM-4, it is coming back to again in rx queue of VM-3 and after wards I did not get any packets in rx queue. 3) I have changed rate of packet forward 10packets per second. but still see the issue. *Can anyone please help to solve this problem ? I need it urgently .* Thanks, Rohit