Commit Graph

2774 Commits

Author SHA1 Message Date
Paul Gortmaker fec14d2fce infiniband: add moduleparam.h to drivers/infiniband as required
These files were getting the moduleparam infrastructure from the
implicit presence of module.h being everywhere, but that is going
away soon.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:36 -04:00
Paul Gortmaker b108d9764c infiniband: add in export.h for files using EXPORT_SYMBOL/THIS_MODULE
These were getting it implicitly via device.h --> module.h but
we are going to stop that when we clean up the headers.

Fix these in advance so the tree remains biscect-clean.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:35 -04:00
Paul Gortmaker e4dd23d753 infiniband: Fix up module files that need to include module.h
They had been getting it implicitly via device.h but we can't
rely on that for the future, due to a pending cleanup so fix
it now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:35 -04:00
Paul Gortmaker fc87af74af infiniband: Fix up users implicitly relying on getting stat.h
They get it via module.h (via device.h) but we want to clean that up.
When we do, we'll get things like:

  CC [M]  drivers/infiniband/core/sysfs.o
  sysfs.c:361: error: 'S_IRUGO' undeclared here (not in a function)
  sysfs.c:654: error: 'S_IWUSR' undeclared here (not in a function)

so add in the stat header it is using explicitly in advance.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:34 -04:00
Linus Torvalds ec7ae51753 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (204 commits)
  [SCSI] qla4xxx: export address/port of connection (fix udev disk names)
  [SCSI] ipr: Fix BUG on adapter dump timeout
  [SCSI] megaraid_sas: Fix instance access in megasas_reset_timer
  [SCSI] hpsa: change confusing message to be more clear
  [SCSI] iscsi class: fix vlan configuration
  [SCSI] qla4xxx: fix data alignment and use nl helpers
  [SCSI] iscsi class: fix link local mispelling
  [SCSI] iscsi class: Replace iscsi_get_next_target_id with IDA
  [SCSI] aacraid: use lower snprintf() limit
  [SCSI] lpfc 8.3.27: Change driver version to 8.3.27
  [SCSI] lpfc 8.3.27: T10 additions for SLI4
  [SCSI] lpfc 8.3.27: Fix queue allocation failure recovery
  [SCSI] lpfc 8.3.27: Change algorithm for getting physical port name
  [SCSI] lpfc 8.3.27: Changed worst case mailbox timeout
  [SCSI] lpfc 8.3.27: Miscellanous logic and interface fixes
  [SCSI] megaraid_sas: Changelog and version update
  [SCSI] megaraid_sas: Add driver workaround for PERC5/1068 kdump kernel panic
  [SCSI] megaraid_sas: Add multiple MSI-X vector/multiple reply queue support
  [SCSI] megaraid_sas: Add support for MegaRAID 9360/9380 12GB/s controllers
  [SCSI] megaraid_sas: Clear FUSION_IN_RESET before enabling interrupts
  ...
2011-10-28 16:44:18 -07:00
Eric Dumazet 9e903e0852 net: add skb frag size accessors
To ease skb->truesize sanitization, its better to be able to localize
all references to skb frags size.

Define accessors : skb_frag_size() to fetch frag size, and
skb_frag_size_{set|add|sub}() to manipulate it.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19 03:10:46 -04:00
David S. Miller 88c5100c28 Merge branch 'master' of github.com:davem330/net
Conflicts:
	net/batman-adv/soft-interface.c
2011-10-07 13:38:43 -04:00
Ian Campbell 5d6bcdfe38 net: use DMA_x_DEVICE and dma_mapping_error with skb_frag_dma_map
When I converted some drivers from pci_map_page to skb_frag_dma_map I
neglected to convert PCI_DMA_xDEVICE into DMA_x_DEVICE and
pci_dma_mapping_error into dma_mapping_error.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-06 16:17:20 -04:00
Neil Horman e48f129c2f [SCSI] cxgb3i: convert cdev->l2opt to use rcu to prevent NULL dereference
This oops was reported recently:
d:mon> e
cpu 0xd: Vector: 300 (Data Access) at [c0000000fd4c7120]
    pc: d00000000076f194: .t3_l2t_get+0x44/0x524 [cxgb3]
    lr: d000000000b02108: .init_act_open+0x150/0x3d4 [cxgb3i]
    sp: c0000000fd4c73a0
   msr: 8000000000009032
   dar: 0
 dsisr: 40000000
  current = 0xc0000000fd640d40
  paca    = 0xc00000000054ff80
    pid   = 5085, comm = iscsid
d:mon> t
[c0000000fd4c7450] d000000000b02108 .init_act_open+0x150/0x3d4 [cxgb3i]
[c0000000fd4c7500] d000000000e45378 .cxgbi_ep_connect+0x784/0x8e8 [libcxgbi]
[c0000000fd4c7650] d000000000db33f0 .iscsi_if_rx+0x71c/0xb18
[scsi_transport_iscsi2]
[c0000000fd4c7740] c000000000370c9c .netlink_data_ready+0x40/0xa4
[c0000000fd4c77c0] c00000000036f010 .netlink_sendskb+0x4c/0x9c
[c0000000fd4c7850] c000000000370c18 .netlink_sendmsg+0x358/0x39c
[c0000000fd4c7950] c00000000033be24 .sock_sendmsg+0x114/0x1b8
[c0000000fd4c7b50] c00000000033d208 .sys_sendmsg+0x218/0x2ac
[c0000000fd4c7d70] c00000000033f55c .sys_socketcall+0x228/0x27c
[c0000000fd4c7e30] c0000000000086a4 syscall_exit+0x0/0x40
--- Exception: c01 (System Call) at 00000080da560cfc

The root cause was an EEH error, which sent us down the offload_close path in
the cxgb3 driver, which in turn sets cdev->l2opt to NULL, without regard for
upper layer driver (like the cxgbi drivers) which might have execution contexts
in the middle of its use. The result is the oops above, when t3_l2t_get attempts
to dereference L2DATA(cdev)->nentries in arp_hash right after the EEH error handler sets it to NULL.

The fix is to prevent the setting of the NULL pointer until after there are no
further users of it.  The t3cdev->l2opt pointer is now converted to be an rcu
pointer and the L2DATA macro is now called under the protection of the
rcu_read_lock().  When the EEH error path:
t3_adapter_error->offload_close->cxgb3_offload_deactivate
Is exectured, setting of that l2opt pointer to NULL, is now gated on an rcu
quiescence point, preventing, allowing L2DATA callers to safely check for a NULL
pointer without concern that the underlying data will be freeded before the
pointer is dereferenced.

This has been tested by the reporter and shown to fix the reproted oops

[nhorman: fix up unitinialised variable reported by Dan Carpenter]
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Karen Xie <kxie@chelsio.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-09-26 09:28:01 -05:00
David S. Miller 8decf86879 Merge branch 'master' of github.com:davem330/net
Conflicts:
	MAINTAINERS
	drivers/net/Kconfig
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
	drivers/net/ethernet/broadcom/tg3.c
	drivers/net/wireless/iwlwifi/iwl-pci.c
	drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
	drivers/net/wireless/rt2x00/rt2800usb.c
	drivers/net/wireless/wl12xx/main.c
2011-09-22 03:23:13 -04:00
Mike Christie f27fb2ef7b [SCSI] iscsi class: sysfs group is_visible callout for iscsi host attrs
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and driver's host attrs to use the attribute
container sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:14 -06:00
Mike Christie 1d063c1729 [SCSI] iscsi class: sysfs group is_visible callout for session attrs
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and driver's session attrs to use the attribute
container sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:06 -06:00
Mike Christie 3128c6c73c [SCSI] iscsi cls: sysfs group is_visible callout for conn attrs
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and drivers to use the attribute container
sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27 08:36:03 -06:00
Ian Campbell 5581be3b48 IPoIB: convert to SKB paged frag API.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-26 12:38:42 -04:00
Ian Campbell cf383ebb13 IB: nes: convert to SKB paged frag API.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Faisal Latif <faisal.latif@intel.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Acked-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-26 12:38:42 -04:00
Ian Campbell 70b1052ad2 IB: amso1100: convert to SKB paged frag API.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tom Tucker <tom@opengridcomputing.com>
Cc: Steve Wise <swise@opengridcomputing.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-26 12:38:42 -04:00
Jiri Pirko afc4b13df1 net: remove use of ndo_set_multicast_list in drivers
replace it by ndo_set_rx_mode

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-17 20:22:03 -07:00
Roland Dreier 80b43de837 Merge branches 'ipoib' and 'iser' into for-next 2011-08-17 10:57:43 -07:00
Or Gerlitz 200ae1a08b IB/iser: Support iSCSI PDU padding
RFC3270 mandates that iSCSI PDUs are padded to the closest integer
number of four byte words.  Fix the iser code to support that on both
the TX/RX flows.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-08-17 09:45:07 -07:00
Or Gerlitz 0ace64b85e IBiser: Fix wrong mask when sizeof (dma_addr_t) > sizeof (unsigned long)
The code that prepares the SG associated with SCSI command for FMR was
buggy for systems with DMA addresses that don't fit in unsigned long,
e.g under the 32-bit based XenServer dom0 sizeof(dma_addr_t) is 8.

Fix that by casting to unsigned long long a masking constant used by
the code. This resolves a crash in iser_sg_to_page_vec on this system.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-08-17 09:40:55 -07:00
Bernd Schubert 22cfb0bf67 IPoIB: Fix possible NULL dereference in ipoib_start_xmit()
Fix a bug introduced in 69cce1d140 ("net: Abstract dst->neighbour
accesses behind helpers.") where we might dereference skb_dst(skb)
even if it is NULL, which causes:

    [  240.944030] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
    [  240.948007] IP: [<ffffffffa0366ce9>] ipoib_start_xmit+0x39/0x280 [ib_ipoib]
    [...]
    [  240.948007] Call Trace:
    [  240.948007]  <IRQ>
    [  240.948007]  [<ffffffff812cd5e0>] dev_hard_start_xmit+0x2a0/0x590
    [  240.948007]  [<ffffffff8131f680>] ? arp_create+0x70/0x200
    [  240.948007]  [<ffffffff812e8e1f>] sch_direct_xmit+0xef/0x1c0

Addresses: https://bugzilla.kernel.org/show_bug.cgi?id=41212
Signed-off-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-08-16 10:19:20 -07:00
David S. Miller af3dcd2f44 mlx4: Fix infiniband Kconfig dependencies.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-11 23:05:05 -07:00
Jeff Kirsher f7917c009c chelsio: Move the Chelsio drivers
Moves the drivers for the Chelsio chipsets into
drivers/net/ethernet/chelsio/ and the necessary Kconfig and Makefile
changes.

CC: Divy Le Ray <divy@chelsio.com>
CC: Dimitris Michailidis <dm@chelsio.com>
CC: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-10 19:54:52 -07:00
Linus Torvalds 91d41fdf31 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Convert to DIV_ROUND_UP_SECTOR_T usage for sectors / dev_max_sectors
  kernel.h: Add DIV_ROUND_UP_ULL and DIV_ROUND_UP_SECTOR_T macro usage
  iscsi-target: Add iSCSI fabric support for target v4.1
  iscsi: Add Serial Number Arithmetic LT and GT into iscsi_proto.h
  iscsi: Use struct scsi_lun in iscsi structs instead of u8[8]
  iscsi: Resolve iscsi_proto.h naming conflicts with drivers/target/iscsi
2011-07-27 13:21:40 -07:00
Arun Sharma 60063497a9 atomic: use <linux/atomic.h>
This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>

Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:47 -07:00
Nicholas Bellinger 123521830c iscsi: Resolve iscsi_proto.h naming conflicts with drivers/target/iscsi
This patch renames the following iscsi_proto.h structures to avoid
namespace issues with drivers/target/iscsi/iscsi_target_core.h:

*) struct iscsi_cmd -> struct iscsi_scsi_req
*) struct iscsi_cmd_rsp -> struct iscsi_scsi_rsp
*) struct iscsi_login -> struct iscsi_login_req

This patch includes useful ISCSI_FLAG_LOGIN_[CURRENT,NEXT]_STAGE*,
and ISCSI_FLAG_SNACK_TYPE_* definitions used by iscsi_target_mod, and
fixes the incorrect definition of struct iscsi_snack to following
RFC-3720 Section 10.16. SNACK Request.

Also, this patch updates libiscsi, iSER, be2iscsi, and bn2xi to
use the updated structure definitions in a handful of locations.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
2011-07-25 07:18:45 +00:00
Linus Torvalds ece236ce2f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (26 commits)
  IB/qib: Defer HCA error events to tasklet
  mlx4_core: Bump the driver version to 1.0
  RDMA/cxgb4: Use printk_ratelimited() instead of printk_ratelimit()
  IB/mlx4: Support PMA counters for IBoE
  IB/mlx4: Use flow counters on IBoE ports
  IB/pma: Add include file for IBA performance counters definitions
  mlx4_core: Add network flow counters
  mlx4_core: Fix location of counter index in QP context struct
  mlx4_core: Read extended capabilities into the flags field
  mlx4_core: Extend capability flags to 64 bits
  IB/mlx4: Generate GID change events in IBoE code
  IB/core: Add GID change event
  RDMA/cma: Don't allow IPoIB port space for IBoE
  RDMA: Allow for NULL .modify_device() and .modify_port() methods
  IB/qib: Update active link width
  IB/qib: Fix potential deadlock with link down interrupt
  IB/qib: Add sysfs interface to read free contexts
  IB/mthca: Remove unnecessary read of PCI_CAP_ID_EXP
  IB/qib: Remove double define
  IB/qib: Remove unnecessary read of PCI_CAP_ID_EXP
  ...
2011-07-22 14:50:12 -07:00
Roland Dreier 4460207561 Merge branches 'cma', 'cxgb4', 'ipath', 'misc', 'mlx4', 'mthca', 'qib' and 'srp' into for-next 2011-07-22 11:56:11 -07:00
Mike Marciniszyn e67306a380 IB/qib: Defer HCA error events to tasklet
With ib_qib options:

    options ib_qib krcvqs=1 pcie_caps=0x51 rcvhdrcnt=4096 singleport=1 ibmtu=4

a run of ib_write_bw -a yields the following:

    ------------------------------------------------------------------
     #bytes     #iterations    BW peak[MB/sec]    BW average[MB/sec]
     1048576   5000           2910.64            229.80
    ------------------------------------------------------------------

The top cpu use in a profile is:

    CPU: Intel Architectural Perfmon, speed 2400.15 MHz (estimated)
    Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask
    of 0x00 (No unit mask) count 1002300
    Counted LLC_MISSES events (Last level cache demand requests from this core that
    missed the LLC) with a unit mask of 0x41 (No unit mask) count 10000
    samples  %        samples  %        app name                 symbol name
    15237    29.2642  964      17.1195  ib_qib.ko                qib_7322intr
    12320    23.6618  1040     18.4692  ib_qib.ko                handle_7322_errors
    4106      7.8860  0              0  vmlinux                  vsnprintf


Analysis of the stats, profile, the code, and the annotated profile indicate:
 - All of the overflow interrupts (one per packet overflow) are
   serviced on CPU0 with no mitigation on the frequency.
 - All of the receive interrupts are being serviced by CPU0.  (That is
   the way truescale.cmds statically allocates the kctx IRQs to CPU)
 - The code is spending all of its time servicing QIB_I_C_ERROR
   RcvEgrFullErr interrupts on CPU0, starving the packet receive
   processing.
 - The decode_err routine is very inefficient, using a printf variant
   to format a "%s" and continues to loop when the errs mask has been
   cleared.
 - Both qib_7322intr and handle_7322_errors read pci registers, which
   is very inefficient.

The fix does the following:
 - Adds a tasklet to service QIB_I_C_ERROR
 - Replaces the very inefficient scnprintf() with a memcpy().  A field
   is added to qib_hwerror_msgs to save the sizeof("string") at
   compile time so that a strlen is not needed during err_decode().
 - The most frequent errors (Overflows) are serviced first to exit the
   loop as early as possible.
 - The loop now exits as soon as the errs mask is clear rather than
   fruitlessly looping through the msp array.

With this fix the performance changes to:

    ------------------------------------------------------------------
     #bytes     #iterations    BW peak[MB/sec]    BW average[MB/sec]
     1048576   5000           2990.64            2941.35
    ------------------------------------------------------------------

During testing of the error handling overflow patch, it was determined
that some CPU's were slower when servicing both overflow and receive
interrupts on CPU0 with different MSI interrupt vectors.

This patch adds an option (krcvq01_no_msi) to not use a dedicated MSI
interrupt for kctx's < 2 and to service them on the default interrupt.
For some CPUs, the cost of the interrupt enter/exit is more costly
than then the additional PCI read in the default handler.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-22 11:56:05 -07:00
Jiri Pirko 7033c4ad87 nes: do vlan cleanup
- unify vlan and nonvlan rx path
- kill nesvnic->vlan_grp and nes_netdev_vlan_rx_register
- allow to turn on/off rx/tx vlan accel via ethtool (set_features)

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-21 13:47:53 -07:00
Manuel Zerpies 3cbe182a5b RDMA/cxgb4: Use printk_ratelimited() instead of printk_ratelimit()
Since printk_ratelimit() shouldn't be used anymore (see comment in
include/linux/printk.h), replace it with printk_ratelimited().

Signed-off-by: Manuel Zerpies <manuel.f.zerpies@ww.stud.uni-erlangen.de>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 21:18:39 -07:00
Or Gerlitz c37791349c IB/mlx4: Support PMA counters for IBoE
Use the per port counter attached to all QPs created on that port to
implement port level packets/bytes performance counters a la IB.
Derived from a patch by Eli Cohen <eli@mellanox.co.il>

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 21:04:36 -07:00
Or Gerlitz cfcde11c3d IB/mlx4: Use flow counters on IBoE ports
Allocate flow counter per Ethernet/IBoE port, and attach this counter
to all the QPs created on that port.  Based on patch by Eli Cohen
<eli@mellanox.co.il>.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 21:04:36 -07:00
Or Gerlitz 6aea213a62 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>
2011-07-18 21:04:35 -07:00
Or Gerlitz 6451c712fe IB/mlx4: Generate GID change events in IBoE code
IBoE doesn't use LIDs.  Use the GID change event to update the IB core
cache for addition/deletion of GIDs.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 21:04:31 -07:00
Or Gerlitz 761d90ed4c IB/core: Add GID change event
Add IB GID change event type.  This is needed for IBoE when the HW
driver updates the GID (e.g when new VLANs are added/deleted) table
and the change should be reflected to the IB core cache.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 21:04:30 -07:00
Moni Shoua 2efdd6a038 RDMA/cma: Don't allow IPoIB port space for IBoE
This patch fixes a kernel crash in cma_set_qkey().

When the link layer is Ethernet, it is wrong to use IPoIB port space
since no IPoIB interface is available.  Specifically, setting the
Q_Key when port space is RDMA_PS_IPOIB requires MGID calculation and
an SA query, which doesn't make sense over Ethernet.

Signed-off-by: Moni Shoua <monis@mellanox.co.il>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 16:50:25 -07:00
Bart Van Assche 10e1b54bbb RDMA: Allow for NULL .modify_device() and .modify_port() methods
These methods don't make sense for iWARP devices, so rather than
forcing them to implement stubs, just return -ENOSYS in the core if
the hardware driver doesn't set .modify_device and/or .modify_port.

Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 16:44:30 -07:00
Mitko Haralanov e800bd032c IB/qib: Update active link width
Update the active link width on QLE7220 chips when link goes down if
chip width does not match shadowed width.

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>
2011-07-18 12:09:26 -07:00
Ram Vepa 4356d0b64b IB/qib: Fix potential deadlock with link down interrupt
There is a possibility of a deadlock due to the way locks are
acquired and released in qib_set_uevent_bits(). The function
qib_set_uevent_bits() is called in process context and it uses
spin_lock() and spin_unlock().  This same lock is acquired/released
in interrupt context which can lead to a deadlock when running on
the same cpu.

The fix is to replace spin_lock() and spin_unlock() with
spin_lock_irqsave() and spin_unlock_irqrestore() respectively in
qib_set_uevent_bits().

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 12:09:23 -07:00
Ram Vepa 2df4f7579d IB/qib: Add sysfs interface to read free contexts
Indicate the number of free user contexts via the sysfs file
/sys/class/infiniband/qib0/nfreectxts as required for PSM.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 12:09:19 -07:00
Jon Mason 9b89925c0d IB/mthca: Remove unnecessary read of PCI_CAP_ID_EXP
The PCIE capability offset is saved during PCI bus walking.  It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it.  Also, pci_is_pcie is a
better way of determining if the device is PCIE or not (as it uses the
same saved PCIE capability offset).

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 12:01:22 -07:00
Edwin van Vliet ac0cae4495 IB/qib: Remove double define
Signed-off-by: Edwin van Vliet <edwin@cheatah.nl>
Reviewed-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 11:59:23 -07:00
Jon Mason 7f27cda037 IB/qib: Remove unnecessary read of PCI_CAP_ID_EXP
The PCIE capability offset is saved during PCI bus walking.  It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 11:57:52 -07:00
Motohiro KOSAKI 5763181172 IB/ipath: Convert old cpumask api into new one
Adapt to new api.  We plan to remove old one later.  Almost all
changes are trivial, but there is one real fix: the following code is
unsafe:

	int ncpus = num_online_cpus()
	for (i = 0; i < ncpus; i++) {
		..
	}

because 1) we don't guarantee last bit of online cpus is equal to
num_online_cpus(). some arch assign sparse cpu number.  2) cpu
hotplugging may change cpu_online_mask at same time.  we need to pin
it by get_online_cpus().

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 11:56:18 -07:00
Motohiro KOSAKI 0cd85e6738 IB/qib: Convert old cpumask api into new one
Adapt to use new APIs.  We plan to remove old one later and plan to
change current->cpus_allowed implementation.

No functional change.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 11:56:03 -07:00
Jack Morgenstein 0c9361fcde RDMA/cma: Avoid assigning an IS_ERR value to cm_id pointer in CMA id object
Avoid assigning an IS_ERR value to the cm_id pointer.  This fixes a
few anomalies in the error flow due to confusion about checking for
NULL vs IS_ERR, and eliminates the need to test for the IS_ERR value
every time we wish to determine if the cma_id object has a cm device
associated with it.

Also, eliminate the now-unnecessary procedure cma_has_cm_dev (we can
check directly for the existence of the device pointer -- for a
non-NULL check, makes no difference if it is the iwarp or the ib
pointer).

Finally, make a few code changes here to improve coding consistency.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-07-18 09:44:55 -07:00
David S. Miller 69cce1d140 net: Abstract dst->neighbour accesses behind helpers.
dst_{get,set}_neighbour()

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-17 23:11:35 -07:00
Goldwyn Rodrigues cdb73db0b6 IB/mthca: Stop returning separate error and status from FW commands
Instead of having firmware command functions return an error and also
a status, leading to code like:

	err = mthca_FW_COMMAND(..., &status);
	if (err)
		goto out;
        if (status) {
		err = -E...;
		goto out;
	}

all over the place, just handle the FW status inside the FW command
handling code (the way mlx4 does it), so we can simply write:

	err = mthca_FW_COMMAND(...);
	if (err)
		goto out;

In addition to simplifying the source code, this also saves a healthy
chunk of text:

    add/remove: 0/0 grow/shrink: 10/88 up/down: 510/-3357 (-2847)
    function                                     old     new   delta
    static.trans_table                           324     584    +260
    mthca_cmd_poll                               352     477    +125
    mthca_cmd_wait                               511     567     +56
    mthca_table_put                              213     240     +27
    mthca_cleanup_db_tab                         372     387     +15
    __mthca_remove_one                           314     323      +9
    mthca_cleanup_user_db_tab                    275     283      +8
    __mthca_init_one                            1738    1746      +8
    mthca_cleanup                                 20      21      +1
    mthca_MAD_IFC                               1081    1082      +1
    mthca_MGID_HASH                               43      40      -3
    mthca_MAP_ICM_AUX                             23      20      -3
    mthca_MAP_ICM                                 19      16      -3
    mthca_MAP_FA                                  23      20      -3
    mthca_READ_MGM                                43      38      -5
    mthca_QUERY_SRQ                               43      38      -5
    mthca_QUERY_QP                                59      54      -5
    mthca_HW2SW_SRQ                               43      38      -5
    mthca_HW2SW_MPT                               60      55      -5
    mthca_HW2SW_EQ                                43      38      -5
    mthca_HW2SW_CQ                                43      38      -5
    mthca_free_icm_table                         120     114      -6
    mthca_query_srq                              214     206      -8
    mthca_free_qp                                662     654      -8
    mthca_cmd                                     38      28     -10
    mthca_alloc_db                              1321    1311     -10
    mthca_setup_hca                             1067    1055     -12
    mthca_WRITE_MTT                               35      22     -13
    mthca_WRITE_MGM                               40      27     -13
    mthca_UNMAP_ICM_AUX                           36      23     -13
    mthca_UNMAP_FA                                36      23     -13
    mthca_SYS_DIS                                 36      23     -13
    mthca_SYNC_TPT                                36      23     -13
    mthca_SW2HW_SRQ                               35      22     -13
    mthca_SW2HW_MPT                               35      22     -13
    mthca_SW2HW_EQ                                35      22     -13
    mthca_SW2HW_CQ                                35      22     -13
    mthca_RUN_FW                                  36      23     -13
    mthca_DISABLE_LAM                             36      23     -13
    mthca_CLOSE_IB                                36      23     -13
    mthca_CLOSE_HCA                               38      25     -13
    mthca_ARM_SRQ                                 39      26     -13
    mthca_free_icms                              178     164     -14
    mthca_QUERY_DDR                              389     375     -14
    mthca_resize_cq                             1063    1048     -15
    mthca_unmap_eq_icm                           123     107     -16
    mthca_map_eq_icm                             396     380     -16
    mthca_cmd_box                                 90      74     -16
    mthca_SET_IB                                 433     417     -16
    mthca_RESIZE_CQ                              369     353     -16
    mthca_MAP_ICM_page                           240     224     -16
    mthca_MAP_EQ                                 183     167     -16
    mthca_INIT_IB                                473     457     -16
    mthca_INIT_HCA                               745     729     -16
    mthca_map_user_db                            816     798     -18
    mthca_SYS_EN                                 157     139     -18
    mthca_cleanup_qp_table                        78      59     -19
    mthca_cleanup_eq_table                       168     149     -19
    mthca_UNMAP_ICM                              143     121     -22
    mthca_modify_srq                             172     149     -23
    mthca_unmap_fmr                              198     174     -24
    mthca_query_qp                               814     790     -24
    mthca_query_pkey                             343     319     -24
    mthca_SET_ICM_SIZE                            34      10     -24
    mthca_QUERY_DEV_LIM                         1870    1846     -24
    mthca_map_cmd                               1130    1105     -25
    mthca_ENABLE_LAM                             401     375     -26
    mthca_modify_port                            247     220     -27
    mthca_query_device                           884     850     -34
    mthca_NOP                                     75      41     -34
    mthca_table_get                              287     249     -38
    mthca_init_qp_table                          333     293     -40
    mthca_MODIFY_QP                              348     308     -40
    mthca_close_hca                              131      89     -42
    mthca_free_eq                                435     390     -45
    mthca_query_port                             755     705     -50
    mthca_free_cq                                581     528     -53
    mthca_alloc_icm_table                        578     524     -54
    mthca_multicast_attach                      1041     986     -55
    mthca_init_hca                               326     271     -55
    mthca_query_gid                              487     431     -56
    mthca_free_srq                               524     468     -56
    mthca_free_mr                                168     111     -57
    mthca_create_eq                             1560    1501     -59
    mthca_multicast_detach                       790     728     -62
    mthca_write_mtt                              918     854     -64
    mthca_register_device                       1406    1342     -64
    mthca_fmr_alloc                              947     883     -64
    mthca_mr_alloc                               652     582     -70
    mthca_process_mad                           1242    1164     -78
    mthca_dev_lim                                910     830     -80
    find_mgm                                     482     400     -82
    mthca_modify_qp                             3852    3753     -99
    mthca_init_cq                               1281    1181    -100
    mthca_alloc_srq                             1719    1610    -109
    mthca_init_eq_table                         1807    1679    -128
    mthca_init_tavor                             761     491    -270
    mthca_init_arbel                            2617    2098    -519

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
2011-07-15 13:33:20 -07:00
David S. Miller 6a7ebdf2fd Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/bluetooth/l2cap_core.c
2011-07-14 07:56:40 -07:00