Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c8681f14013d3ad2fc4fb4e30cfd4ea548f7a249 Commit: c8681f14013d3ad2fc4fb4e30cfd4ea548f7a249 Parent: 13ef5f44c3931dff1d75443a875e97b588d4b8f0 Author: Jack Morgenstein <[EMAIL PROTECTED]> AuthorDate: Thu Jun 21 13:39:10 2007 -0700 Committer: Roland Dreier <[EMAIL PROTECTED]> CommitDate: Thu Jun 21 13:39:10 2007 -0700
IB/mlx4: Correct max_srq_wr returned from mlx4_ib_query_device() We need to keep a spare entry in the SRQ so that there always is a next WQE available when posting receives (so that we can tell the difference between a full queue and an empty queue). So subtract 1 from the value HW gives us before reporting the limit on SRQ entries to consumers. Found by Mellanox QA. Signed-off-by: Jack Morgenstein <[EMAIL PROTECTED]> Signed-off-by: Roland Dreier <[EMAIL PROTECTED]> --- drivers/infiniband/hw/mlx4/main.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index 1095c82..c591616 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -120,7 +120,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev, props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; - props->max_srq_wr = dev->dev->caps.max_srq_wqes; + props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; props->max_srq_sge = dev->dev->caps.max_srq_sge; props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html