[Bug 208977] bxe driver causes packet corruption with RLO activated

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208977

            Bug ID: 208977
           Summary: bxe driver causes packet corruption with RLO activated
           Product: Base System
           Version: 10.2-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: fbsd at qty.se
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

With RLO activated on bxe interfaces, we get corrupted files over NFS, parts of
a read file will occasionally have parts of network traffic in it, usually
parts of other files. Sometimes only the beginning of a file is shown.

Opening the same file from another server not using bxe will always show the
correct file.
Opening the same file from another server using bxe might give you a corrupted
file, but not exactly the same corruption as another server using bxe.

Deactivating RLO will make the problem go away and show the correct file
content.

We've also gotten errors regarding mysql like this: PHP Warning:  Packets out
of order. Expected 14 received 32. Packet size=2105376 in <file>

This bug is very similar to the earlier bug regarding bxe with TSO enabled,
more info on that one here: https://www.freebsd.org/releases/10.0R/errata.html

HW: Dell FX2 with FN410T IOA
NIC: BCM57810
freebsd-version: 10.2-RELEASE-p14

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