From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f172.google.com (mail-pg1-f172.google.com [209.85.215.172]) by dpdk.org (Postfix) with ESMTP id 202B85B3E for ; Mon, 31 Dec 2018 10:42:52 +0100 (CET) Received: by mail-pg1-f172.google.com with SMTP id n2so12557702pgm.3 for ; Mon, 31 Dec 2018 01:42:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fluidic-io.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to; bh=YCjI77GFkXdXu6LJYpM0UZy1fIvJCuimqXqgWnACZ44=; b=kJAcF3SkycZtnton/w4PxtInEKlTh5lcbYdc4ZjB4exEiOi8EOMAepW8OvBXZ5kG0r LIkzG7NmyhaCNnwrgK2aeTHiTez5YQL/cW4G9eCji9vJsoL7xSsH5rORPERxSSmHgPSu Y+j/tsKrhPI8VztT0tiMSSN1Di6db4SfVewcUjXPLV1rC9irIqeofu8eyrl6siDNIJZA bZutYb6inzyvw3/MvFgCVTtY7ncjazw4xbNopyyQoKkqDiMAt+/nbDZMUlIVaML1BXmz 8ftzOlNjJ15wa6/EL1S6IKhoX1lFjTfQndE2HQG1dzrvUUISYVxTM6IOwaHjV4shb476 4Wag== 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=YCjI77GFkXdXu6LJYpM0UZy1fIvJCuimqXqgWnACZ44=; b=TbMPSt1tra7vOVsNvLzw/0gbNBUVTwXj0Ls6+senDbeWya/aN6bjCQbBohc3FttaoO x84p+QabYyOzuFswBcd1vSrYCb3IariBKBbV6xiKlpOgG4SjFfK6k7etCaafujeQRiX1 kAhRbYQb/t89+xHixwdjwbr8kuArOX5IdMG9Te5tYMR4daQytfyLUuByNebldOwcA4a1 u9L33NIt3Msk90h+qY/3lw4G57jiHTtBlNME6CHF4dUNb3FpOFJaCVSzM4itd5Hel/u5 h7kWgWFDJqpliwXLkdbvQSuzwO7ajKyKlwL7XthPOG2b7/mAu0DH0zTo/+zw4Dg+hq5e rvQQ== X-Gm-Message-State: AJcUukdNhW+zF8l2GteuZrDqLK/epHFT3fv+od77cbqxPnctF0JRVZOC ZnM0E5/Tj3gUTSrmbOukZA0imwS6S55VtsOKTNttMxROsCQ= X-Google-Smtp-Source: ALg8bN6XFvIwN2QqyOm50VVsiMOXZpfObDNb4jAi8YG1zXAluLNAU14oZKA6g+jhMyIvV7Ofd5Wbo5EpFNyXS36AMHY= X-Received: by 2002:a63:9843:: with SMTP id l3mr34914285pgo.413.1546249370774; Mon, 31 Dec 2018 01:42:50 -0800 (PST) MIME-Version: 1.0 From: DoHyung Kim Date: Mon, 31 Dec 2018 18:42:40 +0900 Message-ID: To: users@dpdk.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] Weird phenomenon involving KNI 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: , X-List-Received-Date: Mon, 31 Dec 2018 09:42:52 -0000 I'm on the latest revision of 17.11 w/ a 2-port Intel X540 NIC. And having some trouble. one of the 2 ports is bound to a uio_pci_generic, and a KNI interface is up and assigned the MAC address of the port and an IP address, while the other port is kept intact bound to the kernel. Initially the 2 ports are known by their own IP addresses. But a few dozen seconds later, the latter port begins to report via ARP it has the IP address originally assigned to the KNI interface. So my DPDK app doesn't receive any of packets sent to the IP address assigned to the KNI interface. If I set the latter port down w/ ifdown and start my DPDK app, then my app receives packets as intended. But when I set the normal port up again, then it doesn't receive any packet since, this time, the KNI announces via ARP it has the IP address of the other port too. I searched for solution in DPDK mailing lists for this problem, but instead found a few posts mentioning KNI will be replaced w/ something else. But it seems that it's still gaining functionalities over the releases. So I'm confused. Please inform me of any clue for solving the problem described above. Or should I fallback to something more stable like TAP driver? Thanks in advance. -- DoHyung Kim Fluidic Inc.