[openfabrics-ewg] ipath patches for RC3

Tue Aug 29 23:23:56 PDT 2006

On Tue, 2006-08-29 at 16:17 -0700, Bryan O'Sullivan wrote:

> This is a set of patches for the ipath driver for OFED 1.1 RC3.

I forgot to include a broken-out description of the patches earlier;
here it is.

	<b
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allow-disable-sma.patch:
    IB/ipath - allow SMA to be disabled

    This is useful for testing purposes.

control-rx-polarity-inversion.patch:
    IB/ipath - control receive polarity inversion

count-attached-qps-correctly.patch:
    IB/ipath - account for attached QPs correctly

count-cqs-properly.patch:
    IB/ipath - lock and count allocated CQs properly

diag-send.patch:
    IB/ipath - add new minor device to allow sending of diag packets

drop-double-unregister.patch:
    IB/ipath - don't unregister the IB device twice

fix-ipath_poll-return.patch:
    IB/ipath - fix return value from ipath_poll

    This stops the generic poll code from waiting for a timeout.

fix-kpiobufs-handling.patch:
    IB/ipath - fix handling of kpiobufs

    Change comment: no longer imply that user can set ipath_kpiobufs to zero.
    Actually set ipath_kpiobufs from parameter. Previously only altered
    per-device ipath_lastport_piobuf, which was over-written in chip init.

fix-port_rcvhdrq-memleak.patch:
    IB/ipath - fix memory leak if allocation fails

    If the second allocation failed, the first structure allocated in this
    routine was not freed.

fix-sq_sig_all.patch:
    IB/ipath - handle sq_sig_all field correctly

fix-unload-crash-if-cfgports-lt-portcnt.patch:
    IB/ipath - fix for crash on module unload, if cfgports < portcnt

    Allocate enough pointers for all possible ports, to avoid problems in
    cleanup/unload.

forbid-zero-entry-cq.patch:
    IB/ipath - do not allow use of CQ entries with invalid counts

freeze-with-serno.patch:
    IB/ipath - add serial number to hardware freeze error message

    Also added the word "Hardware" after "Fatal" to make it more obvious
    that it's hardware, not software.

guid-0-cleanup.patch:
    IB/ipath - clean up handling of GUID 0

    Respond with an error to the SM if our GUID is 0, and don't allow the
    user to set our GUID to 0.

limit-packets-sent-without-ack.patch:
    IB/ipath - limit # of packets sent without an ACK received

    The sender requests an ACK every 1/2 MB to avoid retransmit timeouts that
    were causing MVAPICH mod_bw to fail after a predictable number of sends.

limit-qp-create-count.patch:
    IB/ipath - put a limit on the number of QPs that can be created

lock-resource-limit-counters-correctly.patch:
    IB/ipath - lock resource limit counters correctly

merge-core-verbs.patch:
    IB/ipath - merge ipath_core and ib_ipath drivers

    There is little point in keeping the two drivers separate, so we are
    merging them.

merge-debug-code.patch:
    IB/ipath - simplify debugging code after ipath_core and ib_ipath merger

mmap-cq-rq.patch:
    IB/ipath: Performance improvements via mmap of queues

    Improve performance of userspace post receive, post SRQ receive, and
    poll CQ operations for ipath by allowing userspace to directly mmap()
    receive queues and completion queues.  This eliminates the copying
    between userspace and the kernel in the data path.

simplify-layer.patch:
    IB/ipath - simplify layering code

    A lot of ipath layer code was only called in one place. Now that the
    ipath_core and ib_ipath drivers are merged, it's more sensible to simply
    inline the simple stuff that the layer code was doing.

trivial-cleanups.patch:
    IB/ipath - trivial cleanups

unregister-from-openib-early.patch:
    IB/ipath - unregister from IB core early

    This gives upper-level protocols a chance to unregister while the device
    is still usable.

user-data-to-modify-methods.patch:
    IB/uverbs: Pass userspace data to modify_srq and modify_qp methods

    Pass a struct ib_udata to the low-level driver's ->modify_srq() and
    ->modify_qp() methods, so that it can get to the device-specific data
    passed in by the userspace driver.

user-master-slave.patch:
    IB/ipath - driver support for userspace sharing of HW contexts

    This allows multiple userspace processes to share a single hardware
    context in a master/slave arrangement.  It is backwards binary compatible
    with existing userspace.

validate-path_mig_state-properly.patch:
    IB/ipath - validate path_mig_state properly

warn-if-no-lid.patch:
    IB/ipath - print warning if LID not acquired within one minute

backport/bits_per_byte-2.6.15.patch:
    BACKPORT - define BITS_PER_BYTE for 2.6.15 and earlier

backport/class-2.6.12.patch:
    BACKPORT - changes to class API for 2.6.12 and earlier

backport/class-2.6.9.patch:
    BACKPORT - changes to class API for 2.6.9 and earlier

backport/class-2.6.9_U4.patch:
    BACKPORT - class changes for RHEL4 U4, 2.6.9 with 2.6.15 bits

backport/dont-leak-info-to-userspace.patch:
    BACKPORT - Don't leak kernel information to userspace

    This is done using vmalloc_user in newer kernels.

backport/fs-get_sb-2.6.17.patch:
    BACKPORT - change signature of ipath_get_sb for 2.6.17 and earlier

backport/header.patch:
    BACKPORT - ipath_backport.h header

backport/idr_destroy-2.6.13.patch:
    BACKPORT - idr_destroy didn't appear until 2.6.14

backport/iounmap-2.6.9.patch:
    BACKPORT - backport to handle change in iounmap signature in 2.6.9

backport/iowrite32_copy.patch:
    BACKPORT - backport iowrite32_copy to 2.6.15 and earlier

backport/mutex-2.6.15.patch:
    BACKPORT - turn mutexes into semaphores for 2.6.15 and earlier

backport/page-hacks-2.6.14.patch:
    BACKPORT - fix up page management for kernels prior to 2.6.15

backport/page-hacks-2.6.9.patch:
    BACKPORT - use more insistent gfp flags for 2.6.9

backport/pci_find_next_capability-2.6.14.patch:
    BACKPORT - backport pci_find_next_capability to 2.6.14 and earlier

backport/pcie-linkstate-2.6.9.patch:
    BACKPORT - define PCI_EXP_LNKSTA for 2.6.9

backport/remap_page_range-2.6.9.patch:
    BACKPORT - remap_pfn_range was remap_page_range in 2.6.9

backport/rlimit-2.6.9.patch:
    BACKPORT - rlim moved from current to current->signal in 2.6.10

backport/sysfs-show-2.6.12.patch:
    BACKPORT - handle change to sysfs show method's signature in 2.6.13