From efaae8f71f3088cc73c9e5ceabbd314aa82ac768 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Mon, 10 Oct 2005 13:48:07 -0700 Subject: [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 Signed-off-by: Roland Dreier --- drivers/infiniband/hw/mthca/mthca_main.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/infiniband/hw/mthca/mthca_main.c') 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; -- cgit v1.2.2