net/mlx5: Move table size calculation to steering cmd layer

Currently the table size is calculated by the fs_core layer. However, each
steering cmd instance has a different allocation logic. FW steering uses
a predefined pools of multiple sizes. SW steering doesn't have a pool,
and can allocate any size of tables.

Move the table size calculation to the steering cmd layer as a pre-step
for moving fs_chains pool logic globally to firmware steering, and
increasing table sizes for software steering. In addition, change the
size parameter to absolute size to allow the special zero value to
mean "get next available maximum size".

Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
index 8e06731d3cb351603267809fc89714449d943515..94712a10ef9a5c2ea75971a30caced0eb6a94bcd 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
@@ -49,9 +49,11 @@ static int mlx5_cmd_stub_update_root_ft(struct mlx5_flow_root_namespace *ns,
 
 static int mlx5_cmd_stub_create_flow_table(struct mlx5_flow_root_namespace *ns,
                                           struct mlx5_flow_table *ft,
-                                          unsigned int log_size,
+                                          unsigned int size,
                                           struct mlx5_flow_table *next_ft)
 {
+       ft->max_fte = size ? roundup_pow_of_two(size) : 1;
+
        return 0;
 }
 
@@ -181,7 +183,7 @@ static int mlx5_cmd_update_root_ft(struct mlx5_flow_root_namespace *ns,
 
 static int mlx5_cmd_create_flow_table(struct mlx5_flow_root_namespace *ns,
                                      struct mlx5_flow_table *ft,
-                                     unsigned int log_size,
+                                     unsigned int size,
                                      struct mlx5_flow_table *next_ft)
 {
        int en_encap = !!(ft->flags & MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT);
@@ -190,8 +192,12 @@ static int mlx5_cmd_create_flow_table(struct mlx5_flow_root_namespace *ns,
        u32 out[MLX5_ST_SZ_DW(create_flow_table_out)] = {};
        u32 in[MLX5_ST_SZ_DW(create_flow_table_in)] = {};
        struct mlx5_core_dev *dev = ns->dev;
+       unsigned int log_size = 0;
        int err;
 
+       log_size = size ? ilog2(roundup_pow_of_two(size)) : 0;
+       ft->max_fte = 1 << log_size;
+
        MLX5_SET(create_flow_table_in, in, opcode,
                 MLX5_CMD_OP_CREATE_FLOW_TABLE);
 

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h
index d62de642eca99a8e2f8fd61bb822064ef0ca1e11..c2e102ed82adee0274b11dad623f590813720ba7 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.h
@@ -38,7 +38,7 @@
 struct mlx5_flow_cmds {
        int (*create_flow_table)(struct mlx5_flow_root_namespace *ns,
                                 struct mlx5_flow_table *ft,
-                                unsigned int log_size,
+                                unsigned int size,
                                 struct mlx5_flow_table *next_ft);
        int (*destroy_flow_table)(struct mlx5_flow_root_namespace *ns,
                                  struct mlx5_flow_table *ft);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index f74d2c834037f680851ff3fdbf85c0c7492d3b95..378990c933e5986886c1e60eca108043b5382e44 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -752,7 +752,7 @@ static struct mlx5_flow_group *alloc_insert_flow_group(struct mlx5_flow_table *f
        return fg;
 }
 
-static struct mlx5_flow_table *alloc_flow_table(int level, u16 vport, int max_fte,
+static struct mlx5_flow_table *alloc_flow_table(int level, u16 vport,
                                                enum fs_flow_table_type table_type,
                                                enum fs_flow_table_op_mod op_mod,
                                                u32 flags)
@@ -775,7 +775,6 @@ static struct mlx5_flow_table *alloc_flow_table(int level, u16 vport, int max_ft
        ft->op_mod = op_mod;
        ft->type = table_type;
        ft->vport = vport;
-       ft->max_fte = max_fte;
        ft->flags = flags;
        INIT_LIST_HEAD(&ft->fwd_rules);
        mutex_init(&ft->lock);
@@ -1070,7 +1069,6 @@ static struct mlx5_flow_table *__mlx5_create_flow_table(struct mlx5_flow_namespa
        struct mlx5_flow_table *next_ft;
        struct fs_prio *fs_prio = NULL;
        struct mlx5_flow_table *ft;
-       int log_table_sz;
        int err;
 
        if (!root) {
@@ -1101,7 +1099,6 @@ static struct mlx5_flow_table *__mlx5_create_flow_table(struct mlx5_flow_namespa
         */
        ft = alloc_flow_table(ft_attr->level,
                              vport,
-                             ft_attr->max_fte ? roundup_pow_of_two(ft_attr->max_fte) : 0,
                              root->table_type,
                              op_mod, ft_attr->flags);
        if (IS_ERR(ft)) {
@@ -1110,12 +1107,11 @@ static struct mlx5_flow_table *__mlx5_create_flow_table(struct mlx5_flow_namespa
        }
 
        tree_init_node(&ft->node, del_hw_flow_table, del_sw_flow_table);
-       log_table_sz = ft->max_fte ? ilog2(ft->max_fte) : 0;
        next_ft = unmanaged ? ft_attr->next_ft :
                              find_next_chained_ft(fs_prio);
        ft->def_miss_action = ns->def_miss_action;
        ft->ns = ns;
-       err = root->cmds->create_flow_table(root, ft, log_table_sz, next_ft);
+       err = root->cmds->create_flow_table(root, ft, ft_attr->max_fte, next_ft);
        if (err)
                goto free_ft;
 

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c
index 96c39a17d02619c002b90134d4112a9788ee2315..ee45d698cd9ca125a102b8fee648aae0f1895a6c 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c
@@ -62,7 +62,7 @@ static int set_miss_action(struct mlx5_flow_root_namespace *ns,
 
 static int mlx5_cmd_dr_create_flow_table(struct mlx5_flow_root_namespace *ns,
                                         struct mlx5_flow_table *ft,
-                                        unsigned int log_size,
+                                        unsigned int size,
                                         struct mlx5_flow_table *next_ft)
 {
        struct mlx5dr_table *tbl;
@@ -71,7 +71,7 @@ static int mlx5_cmd_dr_create_flow_table(struct mlx5_flow_root_namespace *ns,
 
        if (mlx5_dr_is_fw_table(ft->flags))
                return mlx5_fs_cmd_get_fw_cmds()->create_flow_table(ns, ft,
-                                                                   log_size,
+                                                                   size,
                                                                    next_ft);
        flags = ft->flags;
        /* turn off encap/decap if not supported for sw-str by fw */
@@ -97,6 +97,8 @@ static int mlx5_cmd_dr_create_flow_table(struct mlx5_flow_root_namespace *ns,
                }
        }
 
+       ft->max_fte = size ? roundup_pow_of_two(size) : 1;
+
        return 0;
 }