diff options
| author | Bryan O'Sullivan <bos@pathscale.com> | 2006-08-25 22:24:43 +0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-09-23 02:22:38 +0400 |
| commit | 0b81e4f79af8322c7142701982f40d1431dedf19 (patch) | |
| tree | 4d1161d8603471cbe8ece750980eb22767a91235 /drivers/infiniband/hw/ipath/ipath_qp.c | |
| parent | ca4ce383acfb05b8035453cdbbfd4f8ae36c7a69 (diff) | |
| download | linux-0b81e4f79af8322c7142701982f40d1431dedf19.tar.xz | |
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/hw/ipath/ipath_qp.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_qp.c | 15 |
1 files changed, 15 insertions, 0 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); |