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History log of /drivers/infiniband/hw/qib/qib_mad.c
Revision Date Author Comments
0f29b46d49b0ca50536632c6a33986c3171f5ea1 09-Aug-2014 Ira Weiny <ira.weiny@intel.com> IB/mad: add new ioctl to ABI to support new registration options

Registrations options are specified through flags. Definitions of flags will
be in subsequent patches.

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
911eccd284d13d78c92ec4f1f1092c03457d732a 02-May-2014 Mike Marciniszyn <mike.marciniszyn@intel.com> IB/qib: Fix port in pkey change event

The code used a literal 1 in dispatching an IB_EVENT_PKEY_CHANGE.

As of the dual port qib QDR card, this is not necessarily correct.

Change to use the port as specified in the call.

Cc: <stable@vger.kernel.org>
Reported-by: Alex Estrin <alex.estrin@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
7d7632add8dd99f68b21546efff08a5a162de184 07-Mar-2014 Mike Marciniszyn <mike.marciniszyn@intel.com> IB/qib: Modify software pma counters to use percpu variables

The counters, unicast_xmit, unicast_rcv, multicast_xmit, multicast_rcv
are now maintained as percpu variables.

The mad code is modified to add a z_ latch so that the percpu counters
monotonically increase with appropriate adjustments in the reset,
read logic to maintain the z_ latch.

This patch also corrects the fact the unitcast_xmit wasn't handled
at all for UC and RC QPs.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
4c3550057b83bde3250b2f105c7f56326fb43044 12-Sep-2012 Mike Marciniszyn <mike.marciniszyn@intel.com> IB/qib: Fix failure of compliance test C14-024#06_LocalPortNum

Commit 3236b2d469db ("IB/qib: MADs with misset M_Keys should return
failure") introduced a return code assignment that unfortunately
introduced an unconditional exit for the routine due to missing braces.

This patch adds the braces to correct the original patch.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
36a8f01cd24b125aa027c71c1288588edde5322d 19-Jul-2012 Mike Marciniszyn <mike.marciniszyn@intel.com> IB/qib: Add congestion control agent implementation

Add a congestion control agent in the driver that handles gets and
sets from the congestion control manager in the fabric for the
Performance Scale Messaging (PSM) library.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
1fb9fed6d48960fec3ad8c97fed9aa16c9557091 16-Jul-2012 Mike Marciniszyn <mike.marciniszyn@intel.com> IB/qib: Fix QP RCU sparse warnings

Commit af061a644a0e ("IB/qib: Use RCU for qpn lookup") introduced sparse
warnings.

This patch corrects those issues.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
3236b2d469dba42fde837b8cb06308f7f360dfed 02-May-2012 Jim Foraker <foraker1@llnl.gov> IB/qib: MADs with misset M_Keys should return failure

If a MAD is sent directly to the local HCA rather than placed on a QP
and the MAD fails M_Key checks, there is no means to generate a
timeout for the client, which may hang. Instead we report
IB_MAD_RESULT_FAILURE, which operates the same for on-the-wire
packets, but will generate a send failure back to the client.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jim Foraker <foraker1@llnl.gov>
Signed-off-by: Roland Dreier <roland@purestorage.com>
6199c8961e1bcd38c112bee9028d482e2a7768eb 02-May-2012 Jim Foraker <foraker1@llnl.gov> IB/qib: Fix M_Key lease timeout handling

If a port has an M_Key lease set, the M_Key protect bits set to 1, and
a SubnSet arrives with an invalid M_Key, an M_Key mismatch trap is
generated, the lease timer begins as expected, and eventually the
M_Key protect bits will be set back to 0 as per the spec. However, if
any other SMP with an invalid M_Key arrives, the lease timer is expired
and the M_Key protect bits remain in force.

This is not according to to spec. In particular, C14-17 says that
a lease timer that is underway is not affected by protection level
checks (ie, at protection level 1, a SubnGet with a bad M_Key may be
successful, but does not stop the timer), and C14-19 says that the timer
shall stop when a valid M_Key has been received. C14-19 is the only
compliance statement that specifies a stopping condition for the timer.

This behavior is magnified if the port's Master SM LID attribute
points at itself. In that case, the M_Key mismatch trap is sufficient to
expire the timer, and the mkey lease attribute is rendered useless.

Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Signed-off-by: Jim Foraker <foraker1@llnl.gov>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
4ccf28a26c981bcc6f938a7ea293a623d2d66d7b 02-May-2012 Todd Rimmer <todd.rimmer@qlogic.com> IB/qib: Correct ordering of reregister vs. port active events

When a port first goes active with SMA Set(PortInfo) and reregister
bit set, the driver sends up the reregister event followed by a port
active event.

The problem is that in response to reregister event most apps try to
issue a SA query of some sort, but that fails because port is not
active.

The qib driver needs to a trivial change to correct this behavior.

This issue has been there for a while; however the recent serdes work
has probably made the delay between the reregister event and the
active event larger and hence opened the race far enough so that its
being seen more often.

The patch also changes the clientrereg local to a u8 and saves off the
rereg bit into it. The code following the nested subn_get_portinfo()
now restores that bit per o14-12.2.1 with a logical OR from that copy.

Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
520b3ee70527cb47f0b08ceb25ace02aed71eab7 26-Feb-2012 Mike Marciniszyn <mike.marciniszyn@qlogic.com> IB/qib: Avoid filtering LID on SMA portinfo

The current get portinfo handling filters the LID being sent,
changing zero to 0xffff.

This causes OpenSM to log excessive warning messages.

Reviewed-by: Edward Mascarenhas <edward.mascarenhas@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
6aea213a62122701891fe55cc3405d31b927cfde 05-Jul-2011 Or Gerlitz <ogerlitz@mellanox.com> IB/pma: Add include file for IBA performance counters definitions

Move the various definitions and mad structures needed for software
implementation of IBA PM agent from the ipath and qib drivers into a
single include file, which in turn could be used by more consumers.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
36b87b419c7616a8aaa9889566d9a9b50689dee1 04-Mar-2011 Mitko Haralanov <mitko@qlogic.com> IB/qib: Fix M_Key field in SubnGet and SubnGetResp MADs

Set the M_Key field in SubnGet and SugnGetResp MADs based on correctly
interpreting the protection level specified in the M_KeyProtBits field.

Signed-off-by: Mitko Haralanov <mitko@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
cc7fb05946fb1cd2fd0582f9e39f759e20dfeefa 23-Feb-2011 Mitko Haralanov <mitko@qlogic.com> IB/qib: Return correct MAD when setting link width to 255

Fix a bug which causes the driver to return incorrect MADs as a
response to Set(PortInfo) which sets the link width to 0xFF or link
speed to 0xF.

Signed-off-by: Mitko Haralanov <mitko@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
3c9e5f4d657170c2fbc3d382d2daae3820713a6c 11-Jan-2011 Mike Marciniszyn <mike.marciniszyn@qlogic.com> IB/qib: Set port physical state even if other fields are invalid

The IBTA vol. 1 release 1.2.1 spec. says:
C14-24.2.1: If PortInfo:Portstate=Down, then a SubnSet(PortInfo) shall
make any changes it specifies to PortInfo:PortPhysicalState; any other
result is vendor-dependent.

The patch changes the error handling so that the reply says there are
invalid fields but still attempts to set fields that are in range
including PortInfo:PortPhysicalState.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
f931551bafe1f10ded7f5282e2aa162c267a2e5d 24-May-2010 Ralph Campbell <ralph.campbell@qlogic.com> IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters

Add a low-level IB driver for QLogic PCIe adapters.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>