linux.git/Documentation/infiniband, branch v4.8

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

2016-05-28T18:04:16+00:00

Pull more rdma updates from Doug Ledford:
 "This is the second group of code for the 4.7 merge window.  It looks
  large, but only in one sense.  I'll get to that in a minute.  The list
  of changes here breaks down as follows:

   - Dynamic counter infrastructure in the IB drivers

     This is a sysfs based code to allow free form access to the
     hardware counters RDMA devices might support so drivers don't need
     to code this up repeatedly themselves

   - SendOnlyFullMember multicast support

   - IB router support

   - A couple misc fixes

   - The big item on the list: hfi1 driver updates, plus moving the hfi1
     driver out of staging

  There was a group of 15 patches in the hfi1 list that I thought I had
  in the first pull request but they weren't.  So that added to the
  length of the hfi1 section here.

  As far as these go, everything but the hfi1 is pretty straight
  forward.

  The hfi1 is, if you recall, the driver that Al had complaints about
  how it used the write/writev interfaces in an overloaded fashion.  The
  write portion of their interface behaved like the write handler in the
  IB stack proper and did bi-directional communications.  The writev
  interface, on the other hand, only accepts SDMA request structures.
  The completions for those structures are sent back via an entirely
  different event mechanism.

  With the security patch, we put security checks on the write
  interface, however, we also knew they would be going away soon.  Now,
  we've converted the write handler in the hfi1 driver to use ioctls
  from the IB reserved magic area for its bidirectional communications.
  With that change, Intel has addressed all of the items originally on
  their TODO when they went into staging (as well as many items added to
  the list later).

  As such, I moved them out, and since they were the last item in the
  staging/rdma directory, and I don't have immediate plans to use the
  staging area again, I removed the staging/rdma area.

  Because of the move out of staging, as well as a series of 5 patches
  in the hfi1 driver that removed code people thought should be done in
  a different way and was optional to begin with (a snoop debug
  interface, an eeprom driver for an eeprom connected directory to their
  hfi1 chip and not via an i2c bus, and a few other things like that),
  the line count, especially the removal count, is high"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (56 commits)
  staging/rdma: Remove the entire rdma subdirectory of staging
  IB/core: Make device counter infrastructure dynamic
  IB/hfi1: Fix pio map initialization
  IB/hfi1: Correct 8051 link parameter settings
  IB/hfi1: Update pkey table properly after link down or FM start
  IB/rdamvt: Fix rdmavt s_ack_queue sizing
  IB/rdmavt: Max atomic value should be a u8
  IB/hfi1: Fix hard lockup due to not using save/restore spin lock
  IB/hfi1: Add tracing support for send with invalidate opcode
  IB/hfi1, qib: Add ieth to the packet header definitions
  IB/hfi1: Move driver out of staging
  IB/hfi1: Do not free hfi1 cdev parent structure early
  IB/hfi1: Add trace message in user IOCTL handling
  IB/hfi1: Remove write(), use ioctl() for user cmds
  IB/hfi1: Add ioctl() interface for user commands
  IB/hfi1: Remove unused user command
  IB/hfi1: Remove snoop/diag interface
  IB/hfi1: Remove EPROM functionality from data device
  IB/hfi1: Remove UI char device
  IB/hfi1: Remove multiple device cdev
  ...

IB/core: Make device counter infrastructure dynamic

2016-05-26T16:52:51+00:00

In practice, each RDMA device has a unique set of counters that the
hardware implements.  Having a central set of counters that they must
all adhere to is limiting and causes many useful counters to not be
available.

Therefore we create a dynamic counter registration infrastructure.

The driver must implement a stats structure allocation routine, in
which the driver must place the directory name it wants, a list of
names for all of the counters, an array of u64 counters themselves,
plus a few generic configuration options.

We then implement a core routine to create a sysfs file for each
of the named stats elements, and a core routine to retrieve the
stats when any of the sysfs attribute files are read.

To avoid excessive beating on the stats generation routine in the
drivers, the core code also caches the stats for a short period of
time so that someone attempting to read all of the stats in a
given device's directory will not result in a stats generation
call per file read.

Future work will attempt to standardize just the shared stats
elements, and possibly add a method to get the stats via netlink
in addition to sysfs.

Signed-off-by: Christoph Lameter 
Signed-off-by: Mark Bloch 
Reviewed-by: Steve Wise 
Signed-off-by: Doug Ledford 
[ Add caching, make structure names more informative, add i40iw support,
  other significant rewrites from the original patch ]

Documentation: fix common spelling mistakes

2016-04-28T13:51:59+00:00

This fixes several spelling mistakes in the Documentation/ tree, which
are caught by checkpatch.pl's spell checking.

Signed-off-by: Kees Cook 
Reviewed-by: Paul E. McKenney 
Acked-by: Randy Dunlap 
Signed-off-by: Jonathan Corbet

staging/rdma/hfi1: Method to toggle "fast ECN" detection

2016-03-11T01:37:50+00:00

Add a per port sysfs paramter to toggle cc_prescan/Fast ECN Detection and
remove the Kconfig option which was previously used to control this.

While am updating the sysfs documentation, fix the name of CCMgtA.

Reviewed-by: Arthur Kepner 
Reviewed-by: Mike Marciniszyn 
Signed-off-by: Vennila Megavannan 
Signed-off-by: Ira Weiny 
Signed-off-by: Doug Ledford

IB: remove in-kernel support for memory windows

2015-12-23T19:29:04+00:00

Remove the unused ib_allow_mw and ib_bind_mw functions, remove the
unused IB_WR_BIND_MW and IB_WC_BIND_MW opcodes and move ib_dealloc_mw
into the uverbs module.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Jason Gunthorpe  [core]
Reviewed-by: Steve Wise 
Signed-off-by: Doug Ledford

IB/hfi1: add driver files

2015-08-29T02:59:36+00:00

Signed-off-by: Andrew Friedley 
Signed-off-by: Arthur Kepner 
Signed-off-by: Brendan Cunningham 
Signed-off-by: Brian Welty 
Signed-off-by: Caz Yokoyama 
Signed-off-by: Dean Luick 
Signed-off-by: Dennis Dalessandro 
Signed-off-by: Easwar Hariharan 
Signed-off-by: Harish Chegondi 
Signed-off-by: Ira Weiny 
Signed-off-by: Jim Snow 
Signed-off-by: John Gregor 
Signed-off-by: Jubin John 
Signed-off-by: Kaike Wan 
Signed-off-by: Kevin Pine 
Signed-off-by: Kyle Liddell 
Signed-off-by: Mike Marciniszyn 
Signed-off-by: Mitko Haralanov 
Signed-off-by: Ravi Krishnaswamy 
Signed-off-by: Sadanand Warrier 
Signed-off-by: Sanath Kumar 
Signed-off-by: Sudeep Dutt 
Signed-off-by: Vlad Danushevsky 
Signed-off-by: Doug Ledford

IB/mad: add new ioctl to ABI to support new registration options

2014-08-11T03:36:00+00:00

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

Signed-off-by: Ira Weiny 
Signed-off-by: Roland Dreier

IB/ipoib: Add rtnl_link_ops support

2012-09-20T20:49:17+00:00

Add rtnl_link_ops to IPoIB, with the first usage being child device
create/delete through them. Childs devices are now either legacy ones,
created/deleted through the ipoib sysfs entries, or RTNL ones.

Adding support for RTNL childs involved refactoring of ipoib_vlan_add
which is now used by both the sysfs and the link_ops code.

Also, added ndo_uninit entry to support calling unregister_netdevice_queue
from the rtnl dellink entry. This required removal of calls to
ipoib_dev_cleanup from the driver in flows which use unregister_netdevice,
since the networking core will invoke ipoib_uninit which does exactly that.

Signed-off-by: Erez Shitrit 
Signed-off-by: Or Gerlitz 
Signed-off-by: David S. Miller

Documentation: update broken web addresses.

2010-08-04T13:21:40+00:00

Below you will find an updated version from the original series bunching all patches into one big patch
updating broken web addresses that are located in Documentation/*
Some of the addresses date as far far back as 1995 etc... so searching became a bit difficult,
the best way to deal with these is to use web.archive.org to locate these addresses that are outdated.
Now there are also some addresses pointing to .spec files some are located, but some(after searching
on the companies site)where still no where to be found. In this case I just changed the address
to the company site this way the users can contact the company and they can locate them for the users.

Signed-off-by: Justin P. Mattock 
Signed-off-by: Thomas Weber 
Signed-off-by: Mike Frysinger 
Cc: Paulo Marques 
Cc: Randy Dunlap 
Cc: Michael Neuling 
Signed-off-by: Jiri Kosina

IB: Fix typo in ipoib.txt

2009-12-09T22:21:36+00:00

Delete extra words in "is to takes advantage of".

Signed-off-by: Bart Van Assche 
Signed-off-by: Roland Dreier