[RFC 2/2] mlx5: Sample code to exercise new device statistics

[Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>]

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Just put some counters out to allow the testing of the new ib statistics.

Signed-off-by: Mark Bloch <markb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
 drivers/infiniband/core/sysfs.c             | 298 ++++++++++++++++------------
 drivers/infiniband/hw/cxgb3/iwch_provider.c | 136 +++++++++----
 drivers/infiniband/hw/cxgb4/provider.c      |  26 ++-
 drivers/infiniband/hw/mlx5/main.c           |  35 ++++
 include/rdma/ib_verbs.h                     |  60 +-----
 5 files changed, 335 insertions(+), 220 deletions(-)

Index: linux/drivers/infiniband/hw/mlx5/main.c
===================================================================
--- linux.orig/drivers/infiniband/hw/mlx5/main.c	2016-03-03 13:13:50.471454368 -0600
+++ linux/drivers/infiniband/hw/mlx5/main.c	2016-03-03 13:13:50.469454440 -0600
@@ -2122,6 +2122,40 @@ static int mlx5_port_immutable(struct ib
 	return 0;
 }
 
+static char *names[] = {
+	"tcpInSegs",
+	"tcpOutSegs",
+	"tcpRetransSegs",
+	"tcpOutRsts",
+	NULL
+};
+
+static char *port_names[] = {
+	"p1",
+	NULL
+};
+
+static int mlx5_get_protocol_stats(struct ib_device *ibdev,
+				   struct rdma_protocol_stats *stats,
+				   u8 port)
+{
+	if (port != 0) {
+		stats->name = port_names;
+		stats->dirname = "ib_stats";
+		stats->value[0] = 1;
+		return 0;
+	}
+	stats->value[0] = 1;
+	stats->value[1] = 2;
+	stats->value[2] = 3;
+	stats->value[3] = 4;
+
+	stats->name = names;
+	stats->dirname = "ib_stats";
+
+	return 0;
+}
+
 static int mlx5_enable_roce(struct mlx5_ib_dev *dev)
 {
 	int err;
@@ -2266,6 +2300,7 @@ static void *mlx5_ib_add(struct mlx5_cor
 	dev->ib_dev.map_mr_sg		= mlx5_ib_map_mr_sg;
 	dev->ib_dev.check_mr_status	= mlx5_ib_check_mr_status;
 	dev->ib_dev.get_port_immutable  = mlx5_port_immutable;
+	dev->ib_dev.get_protocol_stats	= mlx5_get_protocol_stats;
 
 	mlx5_ib_internal_fill_odp_caps(dev);
 


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