1. 15 5月, 2014 1 次提交
  2. 17 1月, 2014 1 次提交
  3. 10 12月, 2013 1 次提交
    • J
      mlx4_core: Roll back round robin bitmap allocation commit for CQs, SRQs, and MPTs · 7c6d74d2
      Jack Morgenstein 提交于
      Commit f4ec9e95 "mlx4_core: Change bitmap allocator to work in round-robin fashion"
      introduced round-robin allocation (via bitmap) for all resources which allocate
      via a bitmap.
      
      Round robin allocation is desirable for mcgs, counters, pd's, UARs, and xrcds.
      These are simply numbers, with no involvement of ICM memory mapping.
      
      Round robin is required for QPs, since we had a problem with immediate
      reuse of a 24-bit QP number (commit f4ec9e95).
      
      However, for other resources which use the bitmap allocator and involve
      mapping ICM memory -- MPTs, CQs, SRQs -- round-robin is not desirable.
      
      What happens in these cases is the following:
      
      ICM memory is allocated and mapped in chunks of 256K.
      
      Since the resource allocation index goes up monotonically, the allocator
      will eventually require mapping a new chunk. Now, chunks are also unmapped
      when their reference count goes back to zero.  Thus, if a single app is
      running and starts/exits frequently we will have the following situation:
      
      When the app starts, a new chunk must be allocated and mapped.
      
      When the app exits, the chunk reference count goes back to zero, and the
      chunk is unmapped and freed. Therefore, the app must pay the cost of allocation
      and mapping of ICM memory each time it runs (although the price is paid only when
      allocating the initial entry in the new chunk).
      
      For apps which allocate MPTs/SRQs/CQs and which operate as described above,
      this presented a performance problem.
      
      We therefore roll back the round-robin allocator modification for MPTs, CQs, SRQs.
      Reported-by: NMatthew Finlay <matt@mellanox.com>
      Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      7c6d74d2
  4. 08 11月, 2013 1 次提交
  5. 25 4月, 2013 1 次提交
    • A
      net/mlx4_en: Add HW timestamping (TS) support · ec693d47
      Amir Vadai 提交于
      The patch allows to enable/disable HW timestamping for incoming and/or
      outgoing packets. It adds and initializes all structs and callbacks
      needed by kernel TS API.
      To enable/disable HW timestamping appropriate ioctl should be used.
      Currently HWTSTAMP_FILTER_ALL/NONE and HWTSAMP_TX_ON/OFF only are
      supported.
      When enabling TS on receive flow - VLAN stripping will be disabled.
      Also were made all relevant changes in RX/TX flows to consider TS request
      and plant HW timestamps into relevant structures.
      mlx4_ib was fixed to compile with new mlx4_cq_alloc() signature.
      Signed-off-by: NEugenia Emantayev <eugenia@mellanox.com>
      Signed-off-by: NAmir Vadai <amirv@mellanox.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ec693d47
  6. 08 3月, 2013 1 次提交
  7. 23 1月, 2012 1 次提交
  8. 14 12月, 2011 3 次提交
    • E
      mlx4_core: resource tracking for HCA resources used by guests · c82e9aa0
      Eli Cohen 提交于
      The resource tracker is used to track usage of HCA resources by the different
      guests.
      
      Virtual functions (VFs) are attached to guest operating systems but
      resources are allocated from the same pool and are assigned to VFs. It is
      essential that hostile/buggy guests not be able to affect the operation of
      other VFs, possibly attached to other guest OSs since ConnectX firmware is not
      tolerant to misuse of resources.
      
      The resource tracker module associates each resource with a VF and maintains
      state information for the allocated object. It also defines allowed state
      transitions and enforces them.
      
      Relationships between resources are also referred to. For example, CQs are
      pointed to by QPs, so it is forbidden to destroy a CQ if a QP refers to it.
      
      ICM memory is always accessible through the primary function and hence it is
      allocated by the owner of the primary function.
      
      When a guest dies, an FLR is generated for all the VFs it owns and all the
      resources it used are freed.
      
      The tracked resource types are: QPs, CQs, SRQs, MPTs, MTTs, MACs, RES_EQs,
      and XRCDNs.
      Signed-off-by: NEli Cohen <eli@mellanox.co.il>
      Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c82e9aa0
    • J
      mlx4_core: cq modifications for SRIOV · d7233386
      Jack Morgenstein 提交于
      CQs are resources which are allocated and tracked by the PF driver.
      In multifunction mode, the allocation and icm mapping is done in
      the resource tracker (later patch in this sequence).
      
      To accomplish this, we have "work" functions whose names start with
      "__", and "request" functions (same name, no __). If we are operating
      in multifunction mode, the request function actually results in
      comm-channel commands being sent (ALLOC_RES or FREE_RES).
      The PF-driver comm-channel handler will ultimately invoke the
      "work" (__) function and return the result.
      
      If we are not in multifunction mode, the "work" handler is invoked
      immediately.
      Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      d7233386
    • J
      mlx4_core: Add "native" argument to mlx4_cmd and its callers (where needed) · f9baff50
      Jack Morgenstein 提交于
      For SRIOV, some Hypervisor commands can be executed directly (native = 1).
      Others should go through the command wrapper flow (for tracking resource
      usage, for example, or for changing some HCA configurations that slaves
      need to be notified of).
      
      This patch sets the groundwork for this capability -- adding the correct
      value of "native" in each case.
      
      Note that if SRIOV is not activated, this parameter has no effect.
      Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f9baff50
  9. 01 11月, 2011 1 次提交
  10. 11 8月, 2011 1 次提交
  11. 24 3月, 2011 1 次提交
    • Y
      mlx4: Changing interrupt scheme · 0b7ca5a9
      Yevgeny Petrilin 提交于
      Adding a pool of MSI-X vectors and EQs that can be used explicitly by mlx4_core
      customers (mlx4_ib, mlx4_en). The consumers will assign their own names to the
      interrupt vectors. Those vectors are not opened at mlx4 device initialization,
      opened by demand.
      Changed the max number of possible EQs according to the new scheme, no longer relies on
      on number of cores.
      The new functionality is exposed through mlx4_assign_eq() and mlx4_release_eq().
      Customers that do not use the new API will get completion vectors as before.
      Signed-off-by: NMarkuze Alex <markuze@mellanox.co.il>
      Signed-off-by: NYevgeny Petrilin <yevgenyp@mellanox.co.il>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      0b7ca5a9
  12. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  13. 06 9月, 2009 1 次提交
  14. 22 12月, 2008 1 次提交
  15. 23 10月, 2008 1 次提交
  16. 26 7月, 2008 1 次提交
  17. 30 4月, 2008 1 次提交
  18. 24 4月, 2008 1 次提交
  19. 17 4月, 2008 2 次提交
  20. 11 10月, 2007 1 次提交
    • R
      mlx4_core: Fix section mismatches · 3d73c288
      Roland Dreier 提交于
          
      Commit ee49bd93 ("mlx4_core: Reset device when internal error is
      detected") introduced some section mismatch problems when
      CONFIG_HOTPLUG=n, because the error recovery code tears down and
      reinitializes the device after everything is loaded, which ends up
      calling into lots of code marked __devinit and __devexit from regular
      .text.  Fix this by getting rid of these now-incorrect section
      markers.
      Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      3d73c288
  21. 08 6月, 2007 1 次提交
    • E
      mlx4_core: Fix CQ context layout · 09360d54
      Eli Cohen 提交于
      The reserved6 field should be 64 bits, not just 16 bits.  Without
      this, the structure does not match the hardware layout on 32-bit
      architectures: the db_rec_addr field ends up at offset 52 instead of
      offset 56.  The bug slipped by because the alignment of __be64 members
      ends up putting it in the right place on x86-64.
      Signed-off-by: NEli Cohen <eli@mellanox.co.il>
      Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      09360d54
  22. 09 5月, 2007 1 次提交
    • R
      IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters · 225c7b1f
      Roland Dreier 提交于
      Add an InfiniBand driver for Mellanox ConnectX adapters.  Because
      these adapters can also be used as ethernet NICs and Fibre Channel 
      HBAs, the driver is split into two modules: 
       
        mlx4_core: Handles low-level things like device initialization and 
          processing firmware commands.  Also controls resource allocation 
          so that the InfiniBand, ethernet and FC functions can share a 
          device without stepping on each other. 
       
        mlx4_ib: Handles InfiniBand-specific things; plugs into the 
          InfiniBand midlayer. 
      Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      225c7b1f