mlxsw: spectrum: qdiscs: Add tclass number to the mlxsw_sp_qdisc

Tclass number is needed for most of the operations related to the qdisc in
the driver. Create a field for it in the mlxsw_sp_qdisc instead of passing
it to every function as parameter.

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 6f7687bfa1e231f8169fa5d39357251ce0a372b0..dcf6d7c932f99f9d7cb02eefcde3ca2c6d02cad1 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
@@ -49,6 +49,7 @@ enum mlxsw_sp_qdisc_type {
 struct mlxsw_sp_qdisc {
        u32 handle;
        enum mlxsw_sp_qdisc_type type;
+       u8 tclass_num;
        union {
                struct red_stats red;
        } xstats_base;
@@ -99,9 +100,9 @@ mlxsw_sp_tclass_congestion_disable(struct mlxsw_sp_port *mlxsw_sp_port,
 
 static void
 mlxsw_sp_setup_tc_qdisc_red_clean_stats(struct mlxsw_sp_port *mlxsw_sp_port,
-                                       struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
-                                       int tclass_num)
+                                       struct mlxsw_sp_qdisc *mlxsw_sp_qdisc)
 {
+       u8 tclass_num = mlxsw_sp_qdisc->tclass_num;
        struct mlxsw_sp_qdisc_stats *stats_base;
        struct mlxsw_sp_port_xstats *xstats;
        struct rtnl_link_stats64 *stats;
@@ -125,15 +126,15 @@ mlxsw_sp_setup_tc_qdisc_red_clean_stats(struct mlxsw_sp_port *mlxsw_sp_port,
 
 static int
 mlxsw_sp_qdisc_red_destroy(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
-                          struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
-                          int tclass_num)
+                          struct mlxsw_sp_qdisc *mlxsw_sp_qdisc)
 {
        int err;
 
        if (mlxsw_sp_qdisc->handle != handle)
                return 0;
 
-       err = mlxsw_sp_tclass_congestion_disable(mlxsw_sp_port, tclass_num);
+       err = mlxsw_sp_tclass_congestion_disable(mlxsw_sp_port,
+                                                mlxsw_sp_qdisc->tclass_num);
        mlxsw_sp_qdisc->handle = TC_H_UNSPEC;
        mlxsw_sp_qdisc->type = MLXSW_SP_QDISC_NO_QDISC;
 
@@ -143,10 +144,10 @@ mlxsw_sp_qdisc_red_destroy(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
 static int
 mlxsw_sp_qdisc_red_replace(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
                           struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
-                          int tclass_num,
                           struct tc_red_qopt_offload_params *p)
 {
        struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+       u8 tclass_num = mlxsw_sp_qdisc->tclass_num;
        u32 min, max;
        u64 prob;
        int err = 0;
@@ -183,8 +184,7 @@ mlxsw_sp_qdisc_red_replace(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
        mlxsw_sp_qdisc->type = MLXSW_SP_QDISC_RED;
        if (mlxsw_sp_qdisc->handle != handle)
                mlxsw_sp_setup_tc_qdisc_red_clean_stats(mlxsw_sp_port,
-                                                       mlxsw_sp_qdisc,
-                                                       tclass_num);
+                                                       mlxsw_sp_qdisc);
 
        mlxsw_sp_qdisc->handle = handle;
        return 0;
@@ -193,16 +193,17 @@ err_bad_param:
        err = -EINVAL;
 err_config:
        mlxsw_sp_qdisc_red_destroy(mlxsw_sp_port, mlxsw_sp_qdisc->handle,
-                                  mlxsw_sp_qdisc, tclass_num);
+                                  mlxsw_sp_qdisc);
        return err;
 }
 
 static int
 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 *res)
 {
        struct red_stats *xstats_base = &mlxsw_sp_qdisc->xstats_base.red;
+       u8 tclass_num = mlxsw_sp_qdisc->tclass_num;
        struct mlxsw_sp_port_xstats *xstats;
        int early_drops, marks, pdrops;
 
@@ -229,10 +230,10 @@ mlxsw_sp_qdisc_get_red_xstats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
 static int
 mlxsw_sp_qdisc_get_red_stats(struct mlxsw_sp_port *mlxsw_sp_port, u32 handle,
                             struct mlxsw_sp_qdisc *mlxsw_sp_qdisc,
-                            int tclass_num,
                             struct tc_qopt_offload_stats *res)
 {
        u64 tx_bytes, tx_packets, overlimits, drops;
+       u8 tclass_num = mlxsw_sp_qdisc->tclass_num;
        struct mlxsw_sp_qdisc_stats *stats_base;
        struct mlxsw_sp_port_xstats *xstats;
        struct rtnl_link_stats64 *stats;
@@ -271,29 +272,26 @@ int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
                          struct tc_red_qopt_offload *p)
 {
        struct mlxsw_sp_qdisc *mlxsw_sp_qdisc;
-       int tclass_num;
 
        if (p->parent != TC_H_ROOT)
                return -EOPNOTSUPP;
 
        mlxsw_sp_qdisc = mlxsw_sp_port->root_qdisc;
-       tclass_num = MLXSW_SP_PORT_DEFAULT_TCLASS;
 
        switch (p->command) {
        case TC_RED_REPLACE:
                return mlxsw_sp_qdisc_red_replace(mlxsw_sp_port, p->handle,
-                                                 mlxsw_sp_qdisc, tclass_num,
-                                                 &p->set);
+                                                 mlxsw_sp_qdisc, &p->set);
        case TC_RED_DESTROY:
                return mlxsw_sp_qdisc_red_destroy(mlxsw_sp_port, p->handle,
-                                                 mlxsw_sp_qdisc, tclass_num);
+                                                 mlxsw_sp_qdisc);
        case TC_RED_XSTATS:
                return mlxsw_sp_qdisc_get_red_xstats(mlxsw_sp_port, p->handle,
-                                                    mlxsw_sp_qdisc, tclass_num,
+                                                    mlxsw_sp_qdisc,
                                                     p->xstats);
        case TC_RED_STATS:
                return mlxsw_sp_qdisc_get_red_stats(mlxsw_sp_port, p->handle,
-                                                   mlxsw_sp_qdisc, tclass_num,
+                                                   mlxsw_sp_qdisc,
                                                    &p->stats);
        default:
                return -EOPNOTSUPP;
@@ -307,6 +305,8 @@ int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port)
        if (!mlxsw_sp_port->root_qdisc)
                return -ENOMEM;
 
+       mlxsw_sp_port->root_qdisc->tclass_num = MLXSW_SP_PORT_DEFAULT_TCLASS;
+
        return 0;
 }