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authorEran Ben Elisha <eranbe@mellanox.com>2015-06-15 17:58:58 +0300
committerDavid S. Miller <davem@davemloft.net>2015-06-15 17:23:01 -0700
commit47d8417f5914012c794684f651213ffae1b91619 (patch)
tree7be5039f8dcfde0e3efe72e3b967316c7d5f9a58
parentb72ca7e96acf7320c53c5d64d4518be1cf6d4ef3 (diff)
downloadlinux-47d8417f5914012c794684f651213ffae1b91619.tar.bz2
net/mlx4_core: Add sink counter
Reserve the last valid counter index for "sink" counter, when a new counter cannot be allocated, the driver will use this counter. In order to avoid allocating this counter on any other flow, fix the indices bitmap allocation range, and reserve the sink counter index. Add macro for the sink counter index and replace all appearences of the index with the macro. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/infiniband/hw/mlx4/qp.c3
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_resources.c2
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/main.c11
-rw-r--r--include/linux/mlx4/device.h1
4 files changed, 11 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 02fc91c68027..c7d916fab68a 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1544,7 +1544,8 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
dev->counters[qp->port - 1];
optpar |= MLX4_QP_OPTPAR_COUNTER_INDEX;
} else
- context->pri_path.counter_index = 0xff;
+ context->pri_path.counter_index =
+ MLX4_SINK_COUNTER_INDEX(dev->dev);
if (qp->flags & MLX4_IB_QP_NETIF) {
mlx4_ib_steer_qp_reg(dev, qp, 1);
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_resources.c b/drivers/net/ethernet/mellanox/mlx4/en_resources.c
index 34f2fdf4fe5d..97bcb9135f8d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_resources.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_resources.c
@@ -66,7 +66,7 @@ void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
context->pri_path.sched_queue |= user_prio << 3;
context->pri_path.feup = MLX4_FEUP_FORCE_ETH_UP;
}
- context->pri_path.counter_index = 0xff;
+ context->pri_path.counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
context->cqn_send = cpu_to_be32(cqn);
context->cqn_recv = cpu_to_be32(cqn);
context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 1072dc1054dd..2bf54687f9fb 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -479,7 +479,7 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
}
}
- dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
+ dev->caps.max_counters = dev_cap->max_counters;
dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
@@ -2193,13 +2193,16 @@ err_free_icm:
static int mlx4_init_counters_table(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
- int nent;
+ int nent_pow2;
if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
return -ENOENT;
- nent = dev->caps.max_counters;
- return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
+ nent_pow2 = roundup_pow_of_two(dev->caps.max_counters);
+ /* reserve last counter index for sink counter */
+ return mlx4_bitmap_init(&priv->counters_bitmap, nent_pow2,
+ nent_pow2 - 1, 0,
+ nent_pow2 - dev->caps.max_counters + 1);
}
static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index ad31e476873f..312c50420dde 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -957,6 +957,7 @@ struct mlx4_mad_ifc {
((dev)->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
#define MLX4_INVALID_SLAVE_ID 0xFF
+#define MLX4_SINK_COUNTER_INDEX(dev) (dev->caps.max_counters - 1)
void handle_port_mgmt_change_event(struct work_struct *work);