Wireshark-bugs: [Wireshark-bugs] [Bug 13198] New: tshark fails to pass RPC-over-RDMA frames to R
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Fri, 02 Dec 2016 20:07:00 +0000
Bug ID 13198
Summary tshark fails to pass RPC-over-RDMA frames to RPC subdissector
Product Wireshark
Version unspecified
Hardware All
OS All
Status UNCONFIRMED
Severity Normal
Priority Low
Component TShark
Assignee bugzilla-admin@wireshark.org
Reporter chuck.lever@oracle.com 

Created attachment 15101 [details]
Capture containing frames which should be displayed as NFS

Build Information:
TShark (Wireshark) 2.3.0 (v2.3.0rc0-1604-g11894f8)

Copyright 1998-2016 Gerald Combs <gerald@wireshark.org> and contributors.
License GPLv2+: GNU GPL version 2 or later
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled (64-bit) with libpcap, with POSIX capabilities (Linux), with libnl 3,
with GLib 2.48.2, with zlib 1.2.8, with SMI 0.4.8, with c-ares 1.12.0, without
Lua, with GnuTLS 3.4.16, with Gcrypt 1.6.6, with MIT Kerberos, with GeoIP,
without nghttp2, without LZ4, without Snappy.

Running on Linux 4.8.10-200.fc24.x86_64, with Intel(R) Core(TM) i7-5557U CPU @
3.10GHz (with SSE4.2), with 1981 MB of physical memory, with locale
en_US.UTF-8,
with libpcap version 1.7.4, with GnuTLS 3.4.16, with Gcrypt 1.6.6, with zlib
1.2.8.

Built using gcc 6.2.1 20160916 (Red Hat 6.2.1-2).
--
With "tshark -V" the RPC-over-RDMA dissector passes the RPC payload to the RPC
dissector (and then it passes the payload to the correct RPC program
dissector).

Without "-V", the RPC-over-RDMA dissector does not pass the payload on for more
dissection.

A sample wire capture is attached. See frames 54ff.

   54   0.005801      LID: 11 → LID: 5       RPCoRDMA 94 RDMA_MSG XID
0x7155124a[Malformed Packet]
   55   0.005802       LID: 5 → LID: 11      InfiniBand 30 RC Acknowledge
QP=0x000224 
   56   0.005826       LID: 5 → LID: 11      RPCoRDMA 78 RDMA_MSG XID
0x7155124a[Malformed Packet]
   57   0.005828      LID: 11 → LID: 5       InfiniBand 30 RC Acknowledge
QP=0x00020f 
   58   0.006610      LID: 11 → LID: 5       RPCoRDMA 166 RDMA_MSG XID
0x7255124a[Malformed Packet]
   59   0.006610       LID: 5 → LID: 11      InfiniBand 30 RC Acknowledge
QP=0x000224 
   60   0.006650       LID: 5 → LID: 11      RPCoRDMA 134 RDMA_MSG XID
0x7255124a[Malformed Packet]
   61   0.006651      LID: 11 → LID: 5       InfiniBand 30 RC Acknowledge
QP=0x00020f 

These are valid RPC, and should be further dissected as RPC and NFS frames.

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