mlxsw: spectrum: qdiscs: Clean qdisc statistics structs

Clean RED offloaded stats and make them more generic by breaking the
generic qdisc stats to a struct of their own.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
index 55e4e4d..0b6e553 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
@@ -49,18 +49,15 @@ enum mlxsw_sp_qdisc_type {
 struct mlxsw_sp_qdisc {
        u32 handle;
        enum mlxsw_sp_qdisc_type type;
-       struct red_stats xstats_base;
        union {
-               struct {
-                       u64 tail_drop_base;
-                       u64 ecn_base;
-                       u64 wred_drop_base;
-               } red;
-       } xstats;
-       u64 tx_bytes;
-       u64 tx_packets;
-       u64 drops;
-       u64 overlimits;
+               struct red_stats red;
+       } xstats_base;
+       struct mlxsw_sp_qdisc_stats {
+               u64 tx_bytes;
+               u64 tx_packets;
+               u64 drops;
+               u64 overlimits;
+       } stats_base;
 };
 
 static int
@@ -105,26 +102,28 @@ mlxsw_sp_setup_tc_qdisc_clean_stats(struct mlxsw_sp_port *mlxsw_sp_port,
                                    struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
                                    int tclass_num)
 {
-       struct red_stats *xstats_base = &mlxsw_sp_qdisc->xstats_base;
+       struct mlxsw_sp_qdisc_stats *stats_base;
        struct mlxsw_sp_port_xstats *xstats;
        struct rtnl_link_stats64 *stats;
+       struct red_stats *red_base;
 
        xstats = &mlxsw_sp_port->periodic_hw_stats.xstats;
        stats = &mlxsw_sp_port->periodic_hw_stats.stats;
+       stats_base = &mlxsw_sp_qdisc->stats_base;
 
-       mlxsw_sp_qdisc->tx_packets = stats->tx_packets;
-       mlxsw_sp_qdisc->tx_bytes = stats->tx_bytes;
+       stats_base->tx_packets = stats->tx_packets;
+       stats_base->tx_bytes = stats->tx_bytes;
 
        switch (mlxsw_sp_qdisc->type) {
        case MLXSW_SP_QDISC_RED:
-               xstats_base->prob_mark = xstats->ecn;
-               xstats_base->prob_drop = xstats->wred_drop[tclass_num];
-               xstats_base->pdrop = xstats->tail_drop[tclass_num];
-
-               mlxsw_sp_qdisc->overlimits = xstats_base->prob_drop +
-                                            xstats_base->prob_mark;
-               mlxsw_sp_qdisc->drops = xstats_base->prob_drop +
-                                       xstats_base->pdrop;
+               red_base = &mlxsw_sp_qdisc->xstats_base.red;
+               red_base->prob_mark = xstats->ecn;
+               red_base->prob_drop = xstats->wred_drop[tclass_num];
+               red_base->pdrop = xstats->tail_drop[tclass_num];
+
+               stats_base->overlimits = red_base->prob_drop +
+                                        red_base->prob_mark;
+               stats_base->drops = red_base->prob_drop + red_base->pdrop;
                break;
        default:
                break;
@@ -210,7 +209,7 @@ mlxsw_sp_qdisc_get_red_xstats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
                              struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
                              int tclass_num, struct red_stats *res)
 {
-       struct red_stats *xstats_base = &mlxsw_sp_qdisc->xstats_base;
+       struct red_stats *xstats_base = &mlxsw_sp_qdisc->xstats_base.red;
        struct mlxsw_sp_port_xstats *xstats;
        int early_drops, marks, pdrops;
 
@@ -241,6 +240,7 @@ mlxsw_sp_qdisc_get_red_stats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
                             struct tc_qopt_offload_stats *res)
 {
        u64 tx_bytes, tx_packets, overlimits, drops;
+       struct mlxsw_sp_qdisc_stats *stats_base;
        struct mlxsw_sp_port_xstats *xstats;
        struct rtnl_link_stats64 *stats;
 
@@ -250,13 +250,14 @@ mlxsw_sp_qdisc_get_red_stats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
 
        xstats = &mlxsw_sp_port->periodic_hw_stats.xstats;
        stats = &mlxsw_sp_port->periodic_hw_stats.stats;
+       stats_base = &mlxsw_sp_qdisc->stats_base;
 
-       tx_bytes = stats->tx_bytes - mlxsw_sp_qdisc->tx_bytes;
-       tx_packets = stats->tx_packets - mlxsw_sp_qdisc->tx_packets;
+       tx_bytes = stats->tx_bytes - stats_base->tx_bytes;
+       tx_packets = stats->tx_packets - stats_base->tx_packets;
        overlimits = xstats->wred_drop[tclass_num] + xstats->ecn -
-                    mlxsw_sp_qdisc->overlimits;
+                    stats_base->overlimits;
        drops = xstats->wred_drop[tclass_num] + xstats->tail_drop[tclass_num] -
-               mlxsw_sp_qdisc->drops;
+               stats_base->drops;
 
        _bstats_update(res->bstats, tx_bytes, tx_packets);
        res->qstats->overlimits += overlimits;
@@ -264,10 +265,10 @@ mlxsw_sp_qdisc_get_red_stats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
        res->qstats->backlog += mlxsw_sp_cells_bytes(mlxsw_sp_port->mlxsw_sp,
                                                xstats->backlog[tclass_num]);
 
-       mlxsw_sp_qdisc->drops +=  drops;
-       mlxsw_sp_qdisc->overlimits += overlimits;
-       mlxsw_sp_qdisc->tx_bytes += tx_bytes;
-       mlxsw_sp_qdisc->tx_packets += tx_packets;
+       stats_base->drops +=  drops;
+       stats_base->overlimits += overlimits;
+       stats_base->tx_bytes += tx_bytes;
+       stats_base->tx_packets += tx_packets;
        return 0;
 }