[ovs-discuss] The function compose_output_action__ has a serious bug

Wangyong ywang at h3c.com
Sun Oct 12 22:24:08 UTC 2014


Dear all,
I'think the function compose_output_action__ has a serious bug.

When the host A has to virtual machine VMa and VMb. if huge traffic from VMa to VMb, then offline
the VMb, and this function enter the first condition. so the action length is zero. so when return, the
OVS will generate a DROP flow entry to the datapath.
    if (!xport) {
        xlate_report(ctx, "Nonexistent output port");
        return;
    } else if (xport->config & OFPUTIL_PC_NO_FWD) {
-------------------------------------------------------------------------------------------------------------------------------------
本邮件及其附件含有杭州华三通信技术有限公司的保密信息,仅限于发送给上面地址中列出
的个人或群组。禁止任何其他人以任何形式使用(包括但不限于全部或部分地泄露、复制、
或散发)本邮件中的信息。如果您错收了本邮件,请您立即电话或邮件通知发件人并删除本
邮件!
This e-mail and its attachments contain confidential information from H3C, which is
intended only for the person or entity whose address is listed above. Any use of the
information contained herein in any way (including, but not limited to, total or partial
disclosure, reproduction, or dissemination) by persons other than the intended
recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender
by phone or email immediately and delete it!
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://openvswitch.org/pipermail/ovs-discuss/attachments/20141012/5fffa0f1/attachment-0002.html>


More information about the discuss mailing list