diff options
author | Mark Bloch <markb@mellanox.com> | 2016-06-17 15:10:55 +0300 |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2016-06-23 11:39:14 -0400 |
commit | 0837e86a7a3422b85aa45c6f4631f6a3f74cbd01 (patch) | |
tree | cf520ecef75e917f6d7ddcca2598aa6de1c8c223 /drivers/infiniband | |
parent | af1ba291c5e498973cc325c501dd8da80b234571 (diff) | |
download | linux-0837e86a7a3422b85aa45c6f4631f6a3f74cbd01.tar.bz2 |
IB/mlx5: Add per port counters
In order to support statistics for ports, we attach
each QP to a counter set which is dedicate to this port.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 56 | ||||
-rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 6 | ||||
-rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 9 |
3 files changed, 69 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index a7cc6d74d3b0..b29b84134c4c 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2541,6 +2541,41 @@ static void mlx5_disable_roce(struct mlx5_ib_dev *dev) unregister_netdevice_notifier(&dev->roce.nb); } +static void mlx5_ib_dealloc_q_counters(struct mlx5_ib_dev *dev) +{ + unsigned int i; + + for (i = 0; i < dev->num_ports; i++) + mlx5_core_dealloc_q_counter(dev->mdev, + dev->port[i].q_cnt_id); +} + +static int mlx5_ib_alloc_q_counters(struct mlx5_ib_dev *dev) +{ + int i; + int ret; + + for (i = 0; i < dev->num_ports; i++) { + ret = mlx5_core_alloc_q_counter(dev->mdev, + &dev->port[i].q_cnt_id); + if (ret) { + mlx5_ib_warn(dev, + "couldn't allocate queue counter for port %d, err %d\n", + i + 1, ret); + goto dealloc_counters; + } + } + + return 0; + +dealloc_counters: + while (--i >= 0) + mlx5_core_dealloc_q_counter(dev->mdev, + dev->port[i].q_cnt_id); + + return ret; +} + static void *mlx5_ib_add(struct mlx5_core_dev *mdev) { struct mlx5_ib_dev *dev; @@ -2563,10 +2598,15 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev) dev->mdev = mdev; + dev->port = kcalloc(MLX5_CAP_GEN(mdev, num_ports), sizeof(*dev->port), + GFP_KERNEL); + if (!dev->port) + goto err_dealloc; + rwlock_init(&dev->roce.netdev_lock); err = get_port_caps(dev); if (err) - goto err_dealloc; + goto err_free_port; if (mlx5_use_mad_ifc(dev)) get_ext_port_caps(dev); @@ -2729,10 +2769,14 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev) if (err) goto err_rsrc; - err = ib_register_device(&dev->ib_dev, NULL); + err = mlx5_ib_alloc_q_counters(dev); if (err) goto err_odp; + err = ib_register_device(&dev->ib_dev, NULL); + if (err) + goto err_q_cnt; + err = create_umr_res(dev); if (err) goto err_dev; @@ -2754,6 +2798,9 @@ err_umrc: err_dev: ib_unregister_device(&dev->ib_dev); +err_q_cnt: + mlx5_ib_dealloc_q_counters(dev); + err_odp: mlx5_ib_odp_remove_one(dev); @@ -2764,6 +2811,9 @@ err_disable_roce: if (ll == IB_LINK_LAYER_ETHERNET) mlx5_disable_roce(dev); +err_free_port: + kfree(dev->port); + err_dealloc: ib_dealloc_device((struct ib_device *)dev); @@ -2776,11 +2826,13 @@ static void mlx5_ib_remove(struct mlx5_core_dev *mdev, void *context) enum rdma_link_layer ll = mlx5_ib_port_link_layer(&dev->ib_dev, 1); ib_unregister_device(&dev->ib_dev); + mlx5_ib_dealloc_q_counters(dev); destroy_umrc_res(dev); mlx5_ib_odp_remove_one(dev); destroy_dev_resources(&dev->devr); if (ll == IB_LINK_LAYER_ETHERNET) mlx5_disable_roce(dev); + kfree(dev->port); ib_dealloc_device(&dev->ib_dev); } diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 0001ed51e1bd..372385d0f993 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -591,6 +591,10 @@ struct mlx5_ib_resources { struct mutex mutex; }; +struct mlx5_ib_port { + u16 q_cnt_id; +}; + struct mlx5_roce { /* Protect mlx5_ib_get_netdev from invoking dev_hold() with a NULL * netdev pointer @@ -629,6 +633,8 @@ struct mlx5_ib_dev { /* protect resources needed as part of reset flow */ spinlock_t reset_flow_resource_lock; struct list_head qp_list; + /* Array with num_ports elements */ + struct mlx5_ib_port *port; }; static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq) diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 9004905d3d93..5ca14a22868f 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -2651,6 +2651,15 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp, else sqd_event = 0; + if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { + u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num : + qp->port) - 1; + struct mlx5_ib_port *mibport = &dev->port[port_num]; + + context->qp_counter_set_usr_page |= + cpu_to_be32(mibport->q_cnt_id << 16); + } + if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) context->sq_crq_size |= cpu_to_be16(1 << 4); |