[ntb] Adding support for NTB

sosreport currently lacks support for collecting information
about PCI-E Non-transparent bridge hardware. This pull request
adds support for collecting that information. For more
information about NTB, see this page:

https://github.com/jonmason/ntb/wiki

Closes #701.

Signed-off-by: Kenneth Koski <mechaxl@gmail.com>
Signed-off-by: Bryn M. Reeves <bmr@redhat.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/sos/plugins/ntb.py b/sos/plugins/ntb.py
new file mode 100644
index 00000000..da9d1726
--- /dev/null
+++ b/sos/plugins/ntb.py
@@ -0,0 +1,35 @@
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+from sos.plugins import Plugin, RedHatPlugin
+
+
+class Ntb(Plugin, RedHatPlugin):
+    """Linux PCI-Express Non-Transparent Bridge
+    """
+
+    plugin_name = 'ntb'
+    profiles = ('hardware', )
+
+    def setup(self):
+        # NTB is hardwired at PCI Bus 0, device 3, function 0 on Intel
+        # processors (see page 8 in
+        # http://download.intel.com/design/intarch/papers/323328.pdf).
+        self.add_copy_spec([
+            '/sys/kernel/debug/ntb_hw_intel/0000:*/info',
+            '/sys/kernel/debug/ntb_transport/0000:*/qp*/stats'
+        ])
+
+
+# vim: set et ts=4 sw=4 :