netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Stephen Hemminger <stephen@networkplumber.org>
To: netdev@vger.kernel.org
Subject: Fw: [Bug 103991] New: skb legth doesn't match the sum of all the fragments length
Date: Thu, 3 Sep 2015 10:37:43 -0700	[thread overview]
Message-ID: <20150903103743.56271574@urahara> (raw)


There is really not enough information here to make a real evaluation.
kernel is old, hardware is unspecified, and the real problem is not well
identified.


Begin forwarded message:

Date: Thu, 3 Sep 2015 10:51:44 +0000
From: "bugzilla-daemon@bugzilla.kernel.org" <bugzilla-daemon@bugzilla.kernel.org>
To: "shemminger@linux-foundation.org" <shemminger@linux-foundation.org>
Subject: [Bug 103991] New: skb legth doesn't match the sum of all the fragments length


https://bugzilla.kernel.org/show_bug.cgi?id=103991

            Bug ID: 103991
           Summary: skb legth doesn't match the sum of all the fragments
                    length
           Product: Networking
           Version: 2.5
    Kernel Version: 3.13.0-62-generic
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: IPV4
          Assignee: shemminger@linux-foundation.org
          Reporter: tht1234@mailinator.com
        Regression: No

The DUT has 2 interfaces with the same 10GB Ethernet card .
The driver and H/W support TSO at 10G speed.
IP forwarding on the DUT is enabled.
Run iperf from a system connected to one interface to a system connedted to the
second interface:

      system A -------> DUT -------> system B

Watch the outgoing skbs on the DUT to system B:

  On packets with nr_frags == MAX_SKB_FRAGS (17) skb_len is *NOT* equal the
some of the skb->len - skb->data_len + all of its frag->size.

-- 
You are receiving this mail because:
You are the assignee for the bug.

                 reply	other threads:[~2015-09-03 17:37 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20150903103743.56271574@urahara \
    --to=stephen@networkplumber.org \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).