netdev - [PATCH net-next 04/14] mlxsw: spectrum_qdisc: Add mlxsw_sp_qdisc_get_class

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Date:   Fri, 24 Jan 2020 15:23:08 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jiri@...lanox.com, jhs@...atatu.com,
        xiyou.wangcong@...il.com, petrm@...lanox.com, mlxsw@...lanox.com,
        Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net-next 04/14] mlxsw: spectrum_qdisc: Add mlxsw_sp_qdisc_get_class_stats()

From: Petr Machata <petrm@...lanox.com>

Add a wrapper around mlxsw_sp_qdisc_collect_tc_stats() and
mlxsw_sp_qdisc_update_stats() for the simple case of doing both in one go:
mlxsw_sp_qdisc_get_class_stats(). Dispatch to that function from
mlxsw_sp_qdisc_get_red_stats(). This new function will be useful for other
leaf Qdiscs as well.

Signed-off-by: Petr Machata <petrm@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 .../ethernet/mellanox/mlxsw/spectrum_qdisc.c  | 29 ++++++++++++-------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
index ef63b8cbbc94..a0f07e951607 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
@@ -273,6 +273,24 @@ mlxsw_sp_qdisc_update_stats(struct mlxsw_sp *mlxsw_sp,
 	stats_base->tx_packets += tx_packets;
 }
 
+static void
+mlxsw_sp_qdisc_get_tc_stats(struct mlxsw_sp_port *mlxsw_sp_port,
+			    struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
+			    struct tc_qopt_offload_stats *stats_ptr)
+{
+	u64 tx_packets = 0;
+	u64 tx_bytes = 0;
+	u64 backlog = 0;
+	u64 drops = 0;
+
+	mlxsw_sp_qdisc_collect_tc_stats(mlxsw_sp_port, mlxsw_sp_qdisc,
+					&tx_bytes, &tx_packets,
+					&drops, &backlog);
+	mlxsw_sp_qdisc_update_stats(mlxsw_sp_port->mlxsw_sp, mlxsw_sp_qdisc,
+				    tx_bytes, tx_packets, drops, backlog,
+				    stats_ptr);
+}
+
 static int
 mlxsw_sp_tclass_congestion_enable(struct mlxsw_sp_port *mlxsw_sp_port,
 				  int tclass_num, u32 min, u32 max,
@@ -452,24 +470,15 @@ mlxsw_sp_qdisc_get_red_stats(struct mlxsw_sp_port *mlxsw_sp_port,
 	u8 tclass_num = mlxsw_sp_qdisc->tclass_num;
 	struct mlxsw_sp_qdisc_stats *stats_base;
 	struct mlxsw_sp_port_xstats *xstats;
-	u64 tx_packets = 0;
-	u64 tx_bytes = 0;
-	u64 backlog = 0;
 	u64 overlimits;
-	u64 drops = 0;
 
 	xstats = &mlxsw_sp_port->periodic_hw_stats.xstats;
 	stats_base = &mlxsw_sp_qdisc->stats_base;
 
-	mlxsw_sp_qdisc_collect_tc_stats(mlxsw_sp_port, mlxsw_sp_qdisc,
-					&tx_bytes, &tx_packets,
-					&drops, &backlog);
+	mlxsw_sp_qdisc_get_tc_stats(mlxsw_sp_port, mlxsw_sp_qdisc, stats_ptr);
 	overlimits = xstats->wred_drop[tclass_num] + xstats->ecn -
 		     stats_base->overlimits;
 
-	mlxsw_sp_qdisc_update_stats(mlxsw_sp_port->mlxsw_sp, mlxsw_sp_qdisc,
-				    tx_bytes, tx_packets, drops, backlog,
-				    stats_ptr);
 	stats_ptr->qstats->overlimits += overlimits;
 	stats_base->overlimits += overlimits;
 
-- 
2.24.1