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authorEran Ben Elisha2015-06-15 17:59:02 +0300
committerDavid S. Miller2015-06-15 17:23:02 -0700
commit6de5f7f6a1fa2288552d46b3effbb6d5571413e5 (patch)
treebcdd1b0cd0e8278da2552274e10b589518333bcf /drivers/net/ethernet/mellanox/mlx4/main.c
parent68230242cdbcc34d14f664358f8a2392ec1a9f2d (diff)
net/mlx4_core: Allocate default counter per port
Default counter per port will be allocated at the mlx4 core driver load. Every QP opened by the Ethernet driver will be attached to the port's default counter. This is an infrastructure step to collect VF statistics from the PF. 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>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/main.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/main.c71
1 files changed, 68 insertions, 3 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 8b27bfcf809d..4e69cf52a579 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2219,6 +2219,47 @@ static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
}
+static void mlx4_cleanup_default_counters(struct mlx4_dev *dev)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ int port;
+
+ for (port = 0; port < dev->caps.num_ports; port++)
+ if (priv->def_counter[port] != -1)
+ mlx4_counter_free(dev, priv->def_counter[port]);
+}
+
+static int mlx4_allocate_default_counters(struct mlx4_dev *dev)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ int port, err = 0;
+ u32 idx;
+
+ for (port = 0; port < dev->caps.num_ports; port++)
+ priv->def_counter[port] = -1;
+
+ for (port = 0; port < dev->caps.num_ports; port++) {
+ err = mlx4_counter_alloc(dev, &idx);
+
+ if (!err || err == -ENOSPC) {
+ priv->def_counter[port] = idx;
+ } else if (err == -ENOENT) {
+ err = 0;
+ continue;
+ } else {
+ mlx4_err(dev, "%s: failed to allocate default counter port %d err %d\n",
+ __func__, port + 1, err);
+ mlx4_cleanup_default_counters(dev);
+ return err;
+ }
+
+ mlx4_dbg(dev, "%s: default counter index %d for port %d\n",
+ __func__, priv->def_counter[port], port + 1);
+ }
+
+ return err;
+}
+
int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
{
struct mlx4_priv *priv = mlx4_priv(dev);
@@ -2227,8 +2268,10 @@ int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
return -ENOENT;
*idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
- if (*idx == -1)
- return -ENOMEM;
+ if (*idx == -1) {
+ *idx = MLX4_SINK_COUNTER_INDEX(dev);
+ return -ENOSPC;
+ }
return 0;
}
@@ -2275,6 +2318,9 @@ void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
return;
+ if (idx == MLX4_SINK_COUNTER_INDEX(dev))
+ return;
+
__mlx4_clear_if_stat(dev, idx);
mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
@@ -2296,6 +2342,14 @@ void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
}
EXPORT_SYMBOL_GPL(mlx4_counter_free);
+int mlx4_get_default_counter_index(struct mlx4_dev *dev, int port)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+
+ return priv->def_counter[port - 1];
+}
+EXPORT_SYMBOL_GPL(mlx4_get_default_counter_index);
+
void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port)
{
struct mlx4_priv *priv = mlx4_priv(dev);
@@ -2439,6 +2493,12 @@ static int mlx4_setup_hca(struct mlx4_dev *dev)
}
}
+ err = mlx4_allocate_default_counters(dev);
+ if (err) {
+ mlx4_err(dev, "Failed to allocate default counters, aborting\n");
+ goto err_counters_table_free;
+ }
+
if (!mlx4_is_slave(dev)) {
for (port = 1; port <= dev->caps.num_ports; port++) {
ib_port_default_caps = 0;
@@ -2470,13 +2530,16 @@ static int mlx4_setup_hca(struct mlx4_dev *dev)
if (err) {
mlx4_err(dev, "Failed to set port %d, aborting\n",
port);
- goto err_counters_table_free;
+ goto err_default_countes_free;
}
}
}
return 0;
+err_default_countes_free:
+ mlx4_cleanup_default_counters(dev);
+
err_counters_table_free:
if (!mlx4_is_slave(dev))
mlx4_cleanup_counters_table(dev);
@@ -3212,6 +3275,7 @@ err_port:
for (--port; port >= 1; --port)
mlx4_cleanup_port_info(&priv->port[port]);
+ mlx4_cleanup_default_counters(dev);
if (!mlx4_is_slave(dev))
mlx4_cleanup_counters_table(dev);
mlx4_cleanup_qp_table(dev);
@@ -3511,6 +3575,7 @@ static void mlx4_unload_one(struct pci_dev *pdev)
mlx4_free_resource_tracker(dev,
RES_TR_FREE_SLAVES_ONLY);
+ mlx4_cleanup_default_counters(dev);
if (!mlx4_is_slave(dev))
mlx4_cleanup_counters_table(dev);
mlx4_cleanup_qp_table(dev);