diff options
| author | Jack Morgenstein <jackm@mellanox.co.il> | 2005-10-10 13:48:07 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2005-10-17 15:20:29 -0700 |
| commit | efaae8f71f3088cc73c9e5ceabbd314aa82ac768 (patch) | |
| tree | b19084ae0a9dc6837cb2837cbd21386c9f1b2e0e /drivers/infiniband/hw/mthca/mthca_main.c | |
| parent | 4ab6fb7e5b3d34b65a1c3473d80d9d1a462d3a49 (diff) | |
| download | lwn-efaae8f71f3088cc73c9e5ceabbd314aa82ac768.tar.gz lwn-efaae8f71f3088cc73c9e5ceabbd314aa82ac768.zip | |
[IB] mthca: Better limit checking and reporting
Check the sizes of CQs, QPs and SRQs when creating objects, and fail
instead of creating too-big queues. Also return real limits instead
of just plausible-sounding values from mthca_query_device().
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_main.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_main.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c index 576e7fcd053c..7c35abec81ea 100644 --- a/drivers/infiniband/hw/mthca/mthca_main.c +++ b/drivers/infiniband/hw/mthca/mthca_main.c @@ -162,9 +162,18 @@ static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim mdev->limits.pkey_table_len = dev_lim->max_pkeys; mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay; mdev->limits.max_sg = dev_lim->max_sg; + mdev->limits.max_wqes = dev_lim->max_qp_sz; + mdev->limits.max_qp_init_rdma = dev_lim->max_requester_per_qp; mdev->limits.reserved_qps = dev_lim->reserved_qps; + mdev->limits.max_srq_wqes = dev_lim->max_srq_sz; mdev->limits.reserved_srqs = dev_lim->reserved_srqs; mdev->limits.reserved_eecs = dev_lim->reserved_eecs; + /* + * Subtract 1 from the limit because we need to allocate a + * spare CQE so the HCA HW can tell the difference between an + * empty CQ and a full CQ. + */ + mdev->limits.max_cqes = dev_lim->max_cq_sz - 1; mdev->limits.reserved_cqs = dev_lim->reserved_cqs; mdev->limits.reserved_eqs = dev_lim->reserved_eqs; mdev->limits.reserved_mtts = dev_lim->reserved_mtts; |