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    Subject[PATCH 8 of 53] ipath - cap number of CQEs
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    Cap the number of CQEs.  Not a real limitation for us, but expected by
    the verbs code.

    Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>

    diff -r e823378bd19c -r 1d3e85454b53 drivers/infiniband/hw/ipath/ipath_cq.c
    --- a/drivers/infiniband/hw/ipath/ipath_cq.c Fri May 12 15:55:27 2006 -0700
    +++ b/drivers/infiniband/hw/ipath/ipath_cq.c Fri May 12 15:55:27 2006 -0700
    @@ -161,6 +161,11 @@ struct ib_cq *ipath_create_cq(struct ib_
    struct ib_wc *wc;
    struct ib_cq *ret;

    + if (entries > ib_ipath_max_cqe) {
    + ret = ERR_PTR(-EINVAL);
    + goto bail;
    + }
    +
    /*
    * Need to use vmalloc() if we want to support large #s of
    * entries.
    diff -r e823378bd19c -r 1d3e85454b53 drivers/infiniband/hw/ipath/ipath_verbs.c
    --- a/drivers/infiniband/hw/ipath/ipath_verbs.c Fri May 12 15:55:27 2006 -0700
    +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c Fri May 12 15:55:27 2006 -0700
    @@ -64,6 +64,11 @@ module_param_named(max_ahs, ib_ipath_max
    module_param_named(max_ahs, ib_ipath_max_ahs, uint, S_IWUSR | S_IRUGO);
    MODULE_PARM_DESC(max_ahs,
    "Maximum number of address handles to support");
    +
    +unsigned int ib_ipath_max_cqe = 0xFFFF;
    +module_param_named(max_cqe, ib_ipath_max_cqe, uint, S_IWUSR | S_IRUGO);
    +MODULE_PARM_DESC(max_cqe,
    + "Maximum number of completion queue entries to support");

    MODULE_LICENSE("GPL");
    MODULE_AUTHOR("PathScale <support@pathscale.com>");
    @@ -598,7 +603,7 @@ static int ipath_query_device(struct ib_
    props->max_sge = 255;
    props->max_cq = 0xffff;
    props->max_ah = ib_ipath_max_ahs;
    - props->max_cqe = 0xffff;
    + props->max_cqe = ib_ipath_max_cqe;
    props->max_mr = dev->lk_table.max;
    props->max_pd = ib_ipath_max_pds;
    props->max_qp_rd_atom = 1;
    diff -r e823378bd19c -r 1d3e85454b53 drivers/infiniband/hw/ipath/ipath_verbs.h
    --- a/drivers/infiniband/hw/ipath/ipath_verbs.h Fri May 12 15:55:27 2006 -0700
    +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h Fri May 12 15:55:27 2006 -0700
    @@ -690,6 +690,8 @@ extern const int ib_ipath_state_ops[];

    extern unsigned int ib_ipath_lkey_table_size;

    +extern unsigned int ib_ipath_max_cqe;
    +
    extern const u32 ib_ipath_rnr_table[];

    #endif /* IPATH_VERBS_H */
    -
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