Commit Graph

2903 Commits

Author SHA1 Message Date
Linus Torvalds
ad804a0b2a Merge branch 'akpm' (patches from Andrew)
Merge second patch-bomb from Andrew Morton:

 - most of the rest of MM

 - procfs

 - lib/ updates

 - printk updates

 - bitops infrastructure tweaks

 - checkpatch updates

 - nilfs2 update

 - signals

 - various other misc bits: coredump, seqfile, kexec, pidns, zlib, ipc,
   dma-debug, dma-mapping, ...

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (102 commits)
  ipc,msg: drop dst nil validation in copy_msg
  include/linux/zutil.h: fix usage example of zlib_adler32()
  panic: release stale console lock to always get the logbuf printed out
  dma-debug: check nents in dma_sync_sg*
  dma-mapping: tidy up dma_parms default handling
  pidns: fix set/getpriority and ioprio_set/get in PRIO_USER mode
  kexec: use file name as the output message prefix
  fs, seqfile: always allow oom killer
  seq_file: reuse string_escape_str()
  fs/seq_file: use seq_* helpers in seq_hex_dump()
  coredump: change zap_threads() and zap_process() to use for_each_thread()
  coredump: ensure all coredumping tasks have SIGNAL_GROUP_COREDUMP
  signal: remove jffs2_garbage_collect_thread()->allow_signal(SIGCONT)
  signal: introduce kernel_signal_stop() to fix jffs2_garbage_collect_thread()
  signal: turn dequeue_signal_lock() into kernel_dequeue_signal()
  signals: kill block_all_signals() and unblock_all_signals()
  nilfs2: fix gcc uninitialized-variable warnings in powerpc build
  nilfs2: fix gcc unused-but-set-variable warnings
  MAINTAINERS: nilfs2: add header file for tracing
  nilfs2: add tracepoints for analyzing reading and writing metadata files
  ...
2015-11-07 14:32:45 -08:00
Linus Torvalds
ab9f2faf8f Initial 4.4 merge window submission
- "Checksum offload support in user space" enablement
 - Misc cxgb4 fixes, add T6 support
 - Misc usnic fixes
 - 32 bit build warning fixes
 - Misc ocrdma fixes
 - Multicast loopback prevention extension
 - Extend the GID cache to store and return attributes of GIDs
 - Misc iSER updates
 - iSER clustering update
 - Network NameSpace support for rdma CM
 - Work Request cleanup series
 - New Memory Registration API
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma updates from Doug Ledford:
 "This is my initial round of 4.4 merge window patches.  There are a few
  other things I wish to get in for 4.4 that aren't in this pull, as
  this represents what has gone through merge/build/run testing and not
  what is the last few items for which testing is not yet complete.

   - "Checksum offload support in user space" enablement
   - Misc cxgb4 fixes, add T6 support
   - Misc usnic fixes
   - 32 bit build warning fixes
   - Misc ocrdma fixes
   - Multicast loopback prevention extension
   - Extend the GID cache to store and return attributes of GIDs
   - Misc iSER updates
   - iSER clustering update
   - Network NameSpace support for rdma CM
   - Work Request cleanup series
   - New Memory Registration API"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (76 commits)
  IB/core, cma: Make __attribute_const__ declarations sparse-friendly
  IB/core: Remove old fast registration API
  IB/ipath: Remove fast registration from the code
  IB/hfi1: Remove fast registration from the code
  RDMA/nes: Remove old FRWR API
  IB/qib: Remove old FRWR API
  iw_cxgb4: Remove old FRWR API
  RDMA/cxgb3: Remove old FRWR API
  RDMA/ocrdma: Remove old FRWR API
  IB/mlx4: Remove old FRWR API support
  IB/mlx5: Remove old FRWR API support
  IB/srp: Dont allocate a page vector when using fast_reg
  IB/srp: Remove srp_finish_mapping
  IB/srp: Convert to new registration API
  IB/srp: Split srp_map_sg
  RDS/IW: Convert to new memory registration API
  svcrdma: Port to new memory registration API
  xprtrdma: Port to new memory registration API
  iser-target: Port to new memory registration API
  IB/iser: Port to new fast registration API
  ...
2015-11-07 13:33:07 -08:00
Mel Gorman
71baba4b92 mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM
__GFP_WAIT was used to signal that the caller was in atomic context and
could not sleep.  Now it is possible to distinguish between true atomic
context and callers that are not willing to sleep.  The latter should
clear __GFP_DIRECT_RECLAIM so kswapd will still wake.  As clearing
__GFP_WAIT behaves differently, there is a risk that people will clear the
wrong flags.  This patch renames __GFP_WAIT to __GFP_RECLAIM to clearly
indicate what it does -- setting it allows all reclaim activity, clearing
them prevents it.

[akpm@linux-foundation.org: fix build]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-06 17:50:42 -08:00
Linus Torvalds
9cf5c095b6 asm-generic cleanups
The asm-generic changes for 4.4 are mostly a series from Christoph Hellwig
 to clean up various abuses of headers in there. The patch to rename the
 io-64-nonatomic-*.h headers caused some conflicts with new users, so I
 added a workaround that we can remove in the next merge window.
 
 The only other patch is a warning fix from Marek Vasut
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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic cleanups from Arnd Bergmann:
 "The asm-generic changes for 4.4 are mostly a series from Christoph
  Hellwig to clean up various abuses of headers in there.  The patch to
  rename the io-64-nonatomic-*.h headers caused some conflicts with new
  users, so I added a workaround that we can remove in the next merge
  window.

  The only other patch is a warning fix from Marek Vasut"

* tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: temporarily add back asm-generic/io-64-nonatomic*.h
  asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations
  gpio-mxc: stop including <asm-generic/bug>
  n_tracesink: stop including <asm-generic/bug>
  n_tracerouter: stop including <asm-generic/bug>
  mlx5: stop including <asm-generic/kmap_types.h>
  hifn_795x: stop including <asm-generic/kmap_types.h>
  drbd: stop including <asm-generic/kmap_types.h>
  move count_zeroes.h out of asm-generic
  move io-64-nonatomic*.h out of asm-generic
2015-11-06 14:22:15 -08:00
Sagi Grimberg
13d3e895fa RDMA/nes: Remove old FRWR API
No ULP uses it anymore, go ahead and remove it.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:32:29 -04:00
Sagi Grimberg
b8533eccc8 IB/qib: Remove old FRWR API
No ULP uses it anymore, go ahead and remove it.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:32:29 -04:00
Sagi Grimberg
d3cfd002e6 iw_cxgb4: Remove old FRWR API
No ULP uses it anymore, go ahead and remove it.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:32:29 -04:00
Sagi Grimberg
94e585cb74 RDMA/cxgb3: Remove old FRWR API
No ULP uses it anymore, go ahead and remove it.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:19 -04:00
Sagi Grimberg
191cfed565 RDMA/ocrdma: Remove old FRWR API
No ULP uses it anymore, go ahead and remove it.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:19 -04:00
Sagi Grimberg
e761c67fbf IB/mlx4: Remove old FRWR API support
No ULP uses it anymore, go ahead and remove it.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:19 -04:00
Sagi Grimberg
dd01e66a6c IB/mlx5: Remove old FRWR API support
No ULP uses it anymore, go ahead and remove it.
Keep only the local invalidate part of the handlers.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:19 -04:00
Sagi Grimberg
0ba24dd39a RDMA/nes: Support the new memory registration API
Support the new memory registration API by allocating a
private page list array in nes_mr and populate it when
nes_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating IB_WR_FAST_REG_MR handling and take the
needed information from different places:
- page_size, iova, length (ib_mr)
- page array (nes_mr)
- key, access flags (ib_reg_wr)

The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:18 -04:00
Sagi Grimberg
38071a461f IB/qib: Support the new memory registration API
Support the new memory registration API by allocating a
private page list array in qib_mr and populate it when
qib_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating qib_fastreg_mr just take the needed information
from different places:
- page_size, iova, length (ib_mr)
- page array (qib_mr)
- key, access flags (ib_reg_wr)

The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:18 -04:00
Sagi Grimberg
8376b86de7 iw_cxgb4: Support the new memory registration API
Support the new memory registration API by allocating a
private page list array in c4iw_mr and populate it when
c4iw_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating build_fastreg just take the needed information
from different places:
- page_size, iova, length (ib_mr)
- page array (c4iw_mr)
- key, access flags (ib_reg_wr)

The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:18 -04:00
Sagi Grimberg
14fb4171ab RDMA/cxgb3: Support the new memory registration API
Support the new memory registration API by allocating a
private page list array in iwch_mr and populate it when
iwch_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating build_fastreg just take the needed information
from different places:
- page_size, iova, length (ib_mr)
- page array (iwch_mr)
- key, access flags (ib_reg_wr)

The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:18 -04:00
Sagi Grimberg
2eaa1c5647 RDMA/ocrdma: Support the new memory registration API
Support the new memory registration API by allocating a
private page list array in ocrdma_mr and populate it when
ocrdma_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating IB_WR_FAST_REG_MR, but take the needed
information from different places:
- page_size, iova, length, access flags (ib_mr)
- page array (ocrdma_mr)
- key (ib_reg_wr)

The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:18 -04:00
Sagi Grimberg
1b2cd0fc67 IB/mlx4: Support the new memory registration API
Support the new memory registration API by allocating a
private page list array in mlx4_ib_mr and populate it when
mlx4_ib_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by setting the exact WQE as IB_WR_FAST_REG_MR, just take the
needed information from different places:
- page_size, iova, length, access flags (ib_mr)
- page array (mlx4_ib_mr)
- key (ib_reg_wr)

The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Tested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:17 -04:00
Sagi Grimberg
8a187ee52b IB/mlx5: Support the new memory registration API
Support the new memory registration API by allocating a
private page list array in mlx5_ib_mr and populate it when
mlx5_ib_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by setting the exact WQE as IB_WR_FAST_REG_MR, just take the
needed information from different places:
- page_size, iova, length, access flags (ib_mr)
- page array (mlx5_ib_mr)
- key (ib_reg_wr)

The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:17 -04:00
Sagi Grimberg
a706000916 IB/mlx5: Remove dead fmr code
Just function declarations - no need for those
laying arround. If for some reason someone will want
FMR support in mlx5, it should be easy enough to restore
a few structs.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-28 22:27:17 -04:00
Doug Ledford
63e8790d39 Merge branch 'wr-cleanup' into k.o/for-4.4 2015-10-28 22:23:34 -04:00
Matan Barak
dbf727de74 IB/core: Use GID table in AH creation and dmac resolution
Previously, vlan id and source MAC were used from QP attributes. Since
the net device is now stored in the GID attributes, they could be used
instead of getting this information from the QP attributes.

IB_QP_SMAC, IB_QP_ALT_SMAC, IB_QP_VID and IB_QP_ALT_VID were removed
because there is no known libibverbs that uses them.

This commit also modifies the vendors (mlx4, ocrdma) drivers in order
to use the new approach.

ocrdma driver changes were done by Somnath Kotur <Somnath.Kotur@Avagotech.Com>

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 23:48:17 -04:00
Matan Barak
55ee3ab2e4 IB/core: Add netdev and gid attributes paramteres to cache
Adding an ability to query the IB cache by a netdev and get the
attributes of a GID. These parameters are necessary in order to
successfully resolve the required GID (when the netdevice is known)
and get the Ethernet L2 attributes from a GID.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-By: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 23:48:17 -04:00
Eran Ben Elisha
fbfb6625ea IB/mlx4: Add support for blocking multicast loopback QP creation user flag
MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK is now supported downstream.

In addition, this flag was supported only for IB_QPT_UD, now, with the
new implementation it is supported for all QP types.

Support IB_USER_VERBS_EX_CMD_CREATE_QP in order to get the flag from
user space using the extension create qp command.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 23:16:47 -04:00
Eran Ben Elisha
7b59f0f951 IB/mlx4: Add counter based implementation for QP multicast loopback block
Current implementation for MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK is not
supported when link layer is Ethernet.

This patch will add counter based implementation for multicast loopback
prevention. HW can drop multicast loopback packets if sender QP counter
index is equal to receiver QP counter index. If qp flag
MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK is set and link layer is Ethernet,
create a new counter and attach it to the QP so it will continue
receiving multicast loopback traffic but it's own.

The decision if to create a new counter is being made at the qp
modification to RTR after the QP's port is set. When QP is destroyed or
moved back to reset state, delete the counter.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 23:16:47 -04:00
Eran Ben Elisha
3ba8e31d5a IB/mlx4: Add IB counters table
This is an infrastructure step for allocating and attaching more than
one counter to QPs on the same port. Allocate a counters table and
manage the insertion and removals of the counters in load and unload of
mlx4 IB.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 23:16:47 -04:00
Hariprasad S
963cab5082 iw_cxgb4: Adds support for T6 adapter
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 23:16:38 -04:00
Selvin Xavier
c6a7b0d7a5 RDMA/ocrdma: Bump up ocrdma version number to 11.0.0.0
Updating the version number to 11.0.0.0

Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:28:19 -04:00
Devesh Sharma
af74d1956f RDMA/ocrdma: Prevent CQ-Doorbell floods
Changing CQ-Doorbell(DB) logic to prevent DB floods, it is supposed to be
pressed only if any hw CQE is polled. If cq-arm was requested
previously then don't bother about number of hw CQEs polled and
arm the CQ.

Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:28:19 -04:00
Naga Irrinki
aeb922df2c RDMA/ocrdma: Check resource ids received in Async CQE
Some versions of the FW sends wrong QP or CQ IDs in the
Async CQE. Adding a check to see whether qp or cq structures
associated with the CQE is valid.

Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:28:19 -04:00
Selvin Xavier
fb16d8c49e RDMA/ocrdma: Avoid a possible crash in ocrdma_rem_port_stats
debugfs_remove should be called before freeing the driver
stats resources to avoid any crash during ocrdma_remove.

Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:28:19 -04:00
Selvin Xavier
5a85f5e9d4 RDMA/ocrdma: Cleanup unused device list and rcu variables
ocrdma_dev_list is not used by the driver. So removing
the references of this variable. dev->rcu was introduced
for the ipv6 notifier for GID management. This is no longer
required as the GID management is outside the HW driver.

Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:28:18 -04:00
Hariprasad S
3dd9a5dc24 iw_cxgb4: reverse the ord/ird in the ESTABLISHED upcall
The ESTABLISHED event should have the peer's ord/ird so
swap the values in the event before the upcall.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:16:10 -04:00
Hariprasad S
f57b780c00 iw_cxgb4: fix misuse of ep->ord for minimum ird calculation
When calculating the minimum ird in c4iw_accept_cr(), we need to always
have a value of at least 1 if the RTR message is a 0B read.  The code
was
incorrectly using ep->ord for this logic which was incorrectly adjusting
the ird and causing incorrect ord/ird negotiation when using MPAv2 to
negotiate these values.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:16:10 -04:00
Hariprasad S
158c776dba iw_cxgb4: pass the ord/ird in connect reply events
This allows client ULPs to get the negotiated ord/ird which is useful
to avoid stalling the SQ due to exceeding the ORD.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:16:10 -04:00
Hariprasad S
99718e59fa iw_cxgb4: detect fatal errors while creating listening filters
In c4iw_create_listen(), if we're using listen filters, then bail out
of the busy loop if the device becomes fatally dead

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 17:16:10 -04:00
Arnd Bergmann
b61e564af8 RDMA/cxgb4: re-fix 32-bit build warning
Casting a pointer to __be64 produces a warning on 32-bit architectures:

drivers/infiniband/hw/cxgb4/mem.c:147:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    req->wr.wr_lo = (__force __be64)&wr_wait;

This was fixed at least twice for this driver in different places,
and accidentally reverted once more. This puts the correct version
back in place.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 6198dd8d7a ("iw_cxgb4: 32b platform fixes")
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 16:56:28 -04:00
Insu Yun
fe274c5aed usnic: correctly handle kzalloc return value
Since kzalloc returns memory address, not error code,
it should be checked whether it is null or not.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Reviewed-by: Dave Goodell <dgoodell@cisco.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 16:41:19 -04:00
Insu Yun
2c79dad895 usnic: correctly check failed allocation
Since ib_alloc_device returns allocated memory address, not error,
it should be checked as IS_NULL, not IS_ERR_OR_NULL.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Reviewed-by: Dave Goodell <dgoodell@cisco.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-21 16:41:19 -04:00
Doug Ledford
fc81a06965 Merge branch 'k.o/for-4.3-v1' into k.o/for-4.4
Pick up the late fixes from the 4.3 cycle so we have them in our
next branch.
2015-10-21 16:40:21 -04:00
David S. Miller
26440c835f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/usb/asix_common.c
	net/ipv4/inet_connection_sock.c
	net/switchdev/switchdev.c

In the inet_connection_sock.c case the request socket hashing scheme
is completely different in net-next.

The other two conflicts were overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-20 06:08:27 -07:00
Ivan Vecera
47ea032533 drivers/net: get rid of unnecessary initializations in .get_drvinfo()
Many drivers initialize uselessly n_priv_flags, n_stats, testinfo_len,
eedump_len & regdump_len fields in their .get_drvinfo() ethtool op.
It's not necessary as these fields is filled in ethtool_get_drvinfo().

v2: removed unused variable
v3: removed another unused variable

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-16 00:24:10 -07:00
Christoph Hellwig
adec640e03 mlx5: stop including <asm-generic/kmap_types.h>
<linux/highmem.h> is the placace the get the kmap type flags, asm-generic
files are generic implementations only to be used by architecture code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-10-15 00:21:10 +02:00
Christoph Hellwig
25556ae6b9 IB: remove xrc_remote_srq_num from struct ib_send_wr
The field is only initialized in mlx, but never used.

If we want to add proper XRC support it should be done with a new
struct ib_xrc_wr.

This shrinks the various WR structures by another 4 bytes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Haggai Eran <haggaie@mellanox.com>
2015-10-08 11:09:11 +01:00
Christoph Hellwig
e622f2f4ad IB: split struct ib_send_wr
This patch split up struct ib_send_wr so that all non-trivial verbs
use their own structure which embedds struct ib_send_wr.  This dramaticly
shrinks the size of a WR for most common operations:

sizeof(struct ib_send_wr) (old):	96

sizeof(struct ib_send_wr):		48
sizeof(struct ib_rdma_wr):		64
sizeof(struct ib_atomic_wr):		96
sizeof(struct ib_ud_wr):		88
sizeof(struct ib_fast_reg_wr):		88
sizeof(struct ib_bind_mw_wr):		96
sizeof(struct ib_sig_handover_wr):	80

And with Sagi's pending MR rework the fast registration WR will also be
down to a reasonable size:

sizeof(struct ib_fastreg_wr):		64

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> [srp, srpt]
Reviewed-by: Chuck Lever <chuck.lever@oracle.com> [sunrpc]
Tested-by: Haggai Eran <haggaie@mellanox.com>
Tested-by: Sagi Grimberg <sagig@mellanox.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
2015-10-08 11:09:10 +01:00
Jeff Squyres
3805eade3b usnic: add missing clauses to BSD license
The usnic_verbs kernel module was clearly marked with the following in
its code:

  MODULE_LICENSE("Dual BSD/GPL");

However, we accidentally left a few clauses of the BSD text out of the
license header in all the source files.  This commit fixes that: all
the files are properly dual BSD/GPL-licensed.  Contributors that might
have been confused by this have been contacted to get their permission
and are Cc:ed here.

Cc: Benoit Taine <benoit.taine@lip6.fr>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Masanari Iida <standby24x7@gmail.com>
Cc: Matan Barak <matanb@mellanox.com>
Cc: Michael Wang <yun.wang@profitbricks.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-10-06 13:43:25 -04:00
Bodong Wang
070b399723 IB/mlx4: Report checksum offload cap for RAW QP when query device
Signed-off-by: Bodong Wang <bodong@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-09-28 22:10:15 -04:00
Sagi Grimberg
81fb5e26a9 IB/mlx5: Remove pa_lkey usages
Since mlx5 driver cannot rely on registration using the
reserved lkey (global_dma_lkey) it used to allocate a private
physical address lkey for each allocated pd.
Commit 96249d70dd ("IB/core: Guarantee that a local_dma_lkey
is available") just does it in the core layer so we can go ahead
and use that.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-09-25 10:46:51 -04:00
Sagi Grimberg
c6790aa9f4 IB/mlx5: Remove support for IB_DEVICE_LOCAL_DMA_LKEY
Commit 96249d70dd ("IB/core: Guarantee that a local_dma_lkey
is available") allows ULPs that make use of the local dma key to keep
working as before by allocating a DMA MR with local permissions and
converted these consumers to use the MR associated with the PD
rather then device->local_dma_lkey.

ConnectIB has some known issues with memory registration
using the local_dma_lkey (SEND, RDMA, RECV seems to work ok).

Thus don't expose support for it (remove device->local_dma_lkey
setting), and take advantage of the above commit such that no regression
is introduced to working systems.

The local_dma_lkey support will be restored in CX4 depending on FW
capability query.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-09-25 10:46:51 -04:00
Linus Torvalds
72714841b7 Changes for 4.3-rc1
- Move ehca driver to staging/rdma and schedule for deletion
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma driver move from Doug Ledford:
 "This is a move only, no functional changes.

  I tried to get it in prior to the rc1 release, but we were waiting on
  IBM to get back to us that they were OK with the deprecation and
  eventual removal of this driver.  That OK didn't materialize until
  last week, so integration and testing time pushed us beyond the rc1
  release.

  Summary:

   - Move ehca driver to staging/rdma and schedule for deletion"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/ehca: Deprecate driver, move to staging, schedule deletion
2015-09-16 09:16:20 -07:00
Doug Ledford
447e9a4d27 IB/ehca: Deprecate driver, move to staging, schedule deletion
The ehca driver is only supported on IBM machines with a custom EBus.
As they have opted to build their newer machines using more industry
standard technology and haven't really been pushing EBus capable
machines for a while, this driver can now safely be moved to the
staging area and scheduled for eventual removal.  This plan was brought
to IBM's attention and received their sign-off.

Cc: alexs@linux.vnet.ibm.com
Cc: hnguyen@de.ibm.com
Cc: raisch@de.ibm.com
Cc: stefan.roscher@de.ibm.com
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-09-11 18:13:35 -04:00