diff options
| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-08-25 11:24:43 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-09-22 15:22:38 -0700 |
| commit | 0b81e4f79af8322c7142701982f40d1431dedf19 (patch) | |
| tree | 4d1161d8603471cbe8ece750980eb22767a91235 /drivers/infiniband | |
| parent | ca4ce383acfb05b8035453cdbbfd4f8ae36c7a69 (diff) | |
| download | linux-0b81e4f79af8322c7142701982f40d1431dedf19.tar.bz2 | |
IB/ipath: put a limit on the number of QPs that can be created
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_qp.c | 15 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.c | 7 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.h | 4 |
3 files changed, 25 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_qp.c b/drivers/infiniband/hw/ipath/ipath_qp.c index 77391886d2f8..607ba72af2fa 100644 --- a/drivers/infiniband/hw/ipath/ipath_qp.c +++ b/drivers/infiniband/hw/ipath/ipath_qp.c @@ -833,9 +833,21 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, } } + spin_lock(&dev->n_qps_lock); + if (dev->n_qps_allocated == ib_ipath_max_qps) { + spin_unlock(&dev->n_qps_lock); + ret = ERR_PTR(-ENOMEM); + goto bail_ip; + } + + dev->n_qps_allocated++; + spin_unlock(&dev->n_qps_lock); + ret = &qp->ibqp; goto bail; +bail_ip: + kfree(qp->ip); bail_rwq: vfree(qp->r_rq.wq); bail_qp: @@ -864,6 +876,9 @@ int ipath_destroy_qp(struct ib_qp *ibqp) spin_lock_irqsave(&qp->s_lock, flags); qp->state = IB_QPS_ERR; spin_unlock_irqrestore(&qp->s_lock, flags); + spin_lock(&dev->n_qps_lock); + dev->n_qps_allocated--; + spin_unlock(&dev->n_qps_lock); /* Stop the sending tasklet. */ tasklet_kill(&qp->s_task); diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index ab0006288b41..b9be0fd2ed36 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -73,6 +73,10 @@ module_param_named(max_qp_wrs, ib_ipath_max_qp_wrs, uint, S_IWUSR | S_IRUGO); MODULE_PARM_DESC(max_qp_wrs, "Maximum number of QP WRs to support"); +unsigned int ib_ipath_max_qps = 16384; +module_param_named(max_qps, ib_ipath_max_qps, uint, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(max_qps, "Maximum number of QPs to support"); + unsigned int ib_ipath_max_sges = 0x60; module_param_named(max_sges, ib_ipath_max_sges, uint, S_IWUSR | S_IRUGO); MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support"); @@ -958,7 +962,7 @@ static int ipath_query_device(struct ib_device *ibdev, props->sys_image_guid = dev->sys_image_guid; props->max_mr_size = ~0ull; - props->max_qp = dev->qp_table.max; + props->max_qp = ib_ipath_max_qps; props->max_qp_wr = ib_ipath_max_qp_wrs; props->max_sge = ib_ipath_max_sges; props->max_cq = ib_ipath_max_cqs; @@ -1420,6 +1424,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd) spin_lock_init(&idev->n_pds_lock); spin_lock_init(&idev->n_ahs_lock); spin_lock_init(&idev->n_cqs_lock); + spin_lock_init(&idev->n_qps_lock); spin_lock_init(&idev->n_srqs_lock); spin_lock_init(&idev->n_mcast_grps_lock); diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h index f2956090d93f..09bbb3f9a217 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.h +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -482,6 +482,8 @@ struct ipath_ibdev { spinlock_t n_ahs_lock; u32 n_cqs_allocated; /* number of CQs allocated for device */ spinlock_t n_cqs_lock; + u32 n_qps_allocated; /* number of QPs allocated for device */ + spinlock_t n_qps_lock; u32 n_srqs_allocated; /* number of SRQs allocated for device */ spinlock_t n_srqs_lock; u32 n_mcast_grps_allocated; /* number of mcast groups allocated */ @@ -792,6 +794,8 @@ extern unsigned int ib_ipath_max_cqs; extern unsigned int ib_ipath_max_qp_wrs; +extern unsigned int ib_ipath_max_qps; + extern unsigned int ib_ipath_max_sges; extern unsigned int ib_ipath_max_mcast_grps; |