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IB/mlx4: Use flow counters on IBoE ports

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Allocate flow counter per Ethernet/IBoE port, and attach this counter
to all the QPs created on that port.  Based on patch by Eli Cohen
<eli@mellanox.co.il>.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Or Gerlitz 2011-06-15 14:49:57 +00:00 committed by Roland Dreier
parent 6aea213a62
commit cfcde11c3d
4 changed files with 29 additions and 4 deletions
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19
drivers/infiniband/hw/mlx4/main.c
View File

@ -1098,11 +1098,21 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
if (init_node_data(ibdev))
goto err_map;
for (i = 0; i < ibdev->num_ports; ++i) {
if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
IB_LINK_LAYER_ETHERNET) {
err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
if (err)
ibdev->counters[i] = -1;
} else
ibdev->counters[i] = -1;
}
spin_lock_init(&ibdev->sm_lock);
mutex_init(&ibdev->cap_mask_mutex);
if (ib_register_device(&ibdev->ib_dev, NULL))
goto err_map;
goto err_counter;
if (mlx4_ib_mad_init(ibdev))
goto err_reg;
@ -1132,6 +1142,10 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
err_reg:
ib_unregister_device(&ibdev->ib_dev);
err_counter:
for (; i; --i)
mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
err_map:
iounmap(ibdev->uar_map);
@ -1160,7 +1174,8 @@ static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
ibdev->iboe.nb.notifier_call = NULL;
}
iounmap(ibdev->uar_map);
for (p = 0; p < ibdev->num_ports; ++p)
mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
mlx4_CLOSE_PORT(dev, p);

1
drivers/infiniband/hw/mlx4/mlx4_ib.h
View File

@ -193,6 +193,7 @@ struct mlx4_ib_dev {
struct mutex cap_mask_mutex;
bool ib_active;
struct mlx4_ib_iboe iboe;
int counters[MLX4_MAX_PORTS];
};
static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)

10
drivers/infiniband/hw/mlx4/qp.c
View File

@ -893,7 +893,6 @@ static int mlx4_set_path(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah,
--path->static_rate;
} else
path->static_rate = 0;
path->counter_index = 0xff;
if (ah->ah_flags & IB_AH_GRH) {
if (ah->grh.sgid_index >= dev->dev->caps.gid_table_len[port]) {
@ -1034,6 +1033,15 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
}
}
if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
if (dev->counters[qp->port - 1] != -1) {
context->pri_path.counter_index =
dev->counters[qp->port - 1];
optpar |= MLX4_QP_OPTPAR_COUNTER_INDEX;
} else
context->pri_path.counter_index = 0xff;
}
if (attr_mask & IB_QP_PKEY_INDEX) {
context->pri_path.pkey_index = attr->pkey_index;
optpar |= MLX4_QP_OPTPAR_PKEY_INDEX;

3
include/linux/mlx4/qp.h
View File

@ -54,7 +54,8 @@ enum mlx4_qp_optpar {
MLX4_QP_OPTPAR_RETRY_COUNT = 1 << 12,
MLX4_QP_OPTPAR_RNR_RETRY = 1 << 13,
MLX4_QP_OPTPAR_ACK_TIMEOUT = 1 << 14,
MLX4_QP_OPTPAR_SCHED_QUEUE = 1 << 16
MLX4_QP_OPTPAR_SCHED_QUEUE = 1 << 16,
MLX4_QP_OPTPAR_COUNTER_INDEX = 1 << 20
};
enum mlx4_qp_state {