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Date: Sat, 27 Jun 2020 14:17:15 -0700
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>, kuba@...nel.org
Cc: netdev@...r.kernel.org, Saeed Mahameed <saeedm@...lanox.com>,
Tariq Toukan <tariqt@...lanox.com>,
Maxim Mikityanskiy <maximmi@...lanox.com>
Subject: [net-next 03/15] net/mlx5e: API to manipulate TTC rules destinations
Store the default destinations of the on-load generated TTC
(Traffic Type Classifier) rules in the ttc rules table.
Introduce TTC API functions to manipulate/restore and get the TTC rule
destination and use these API functions in arfs implementation.
This will allow a better decoupling between TTC implementation and its
users.
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
Signed-off-by: Tariq Toukan <tariqt@...lanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@...lanox.com>
---
.../net/ethernet/mellanox/mlx5/core/en/fs.h | 16 +++-
.../net/ethernet/mellanox/mlx5/core/en_arfs.c | 34 +++-----
.../net/ethernet/mellanox/mlx5/core/en_fs.c | 84 ++++++++++++++-----
3 files changed, 86 insertions(+), 48 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h b/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h
index 0416f7712109..c633579474c3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/fs.h
@@ -105,11 +105,16 @@ enum mlx5e_tunnel_types {
bool mlx5e_tunnel_inner_ft_supported(struct mlx5_core_dev *mdev);
+struct mlx5e_ttc_rule {
+ struct mlx5_flow_handle *rule;
+ struct mlx5_flow_destination default_dest;
+};
+
/* L3/L4 traffic type classifier */
struct mlx5e_ttc_table {
- struct mlx5e_flow_table ft;
- struct mlx5_flow_handle *rules[MLX5E_NUM_TT];
- struct mlx5_flow_handle *tunnel_rules[MLX5E_NUM_TUNNEL_TT];
+ struct mlx5e_flow_table ft;
+ struct mlx5e_ttc_rule rules[MLX5E_NUM_TT];
+ struct mlx5_flow_handle *tunnel_rules[MLX5E_NUM_TUNNEL_TT];
};
/* NIC prio FTS */
@@ -248,6 +253,11 @@ void mlx5e_destroy_inner_ttc_table(struct mlx5e_priv *priv,
struct mlx5e_ttc_table *ttc);
void mlx5e_destroy_flow_table(struct mlx5e_flow_table *ft);
+int mlx5e_ttc_fwd_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type,
+ struct mlx5_flow_destination *new_dest);
+struct mlx5_flow_destination
+mlx5e_ttc_get_default_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type);
+int mlx5e_ttc_fwd_default_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type);
void mlx5e_enable_cvlan_filter(struct mlx5e_priv *priv);
void mlx5e_disable_cvlan_filter(struct mlx5e_priv *priv);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c
index c4c9d6cda7e6..39475f6565c7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_arfs.c
@@ -90,23 +90,15 @@ static enum mlx5e_traffic_types arfs_get_tt(enum arfs_type type)
static int arfs_disable(struct mlx5e_priv *priv)
{
- struct mlx5_flow_destination dest = {};
- struct mlx5e_tir *tir = priv->indir_tir;
- int err = 0;
- int tt;
- int i;
+ int err, i;
- dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
for (i = 0; i < ARFS_NUM_TYPES; i++) {
- dest.tir_num = tir[i].tirn;
- tt = arfs_get_tt(i);
- /* Modify ttc rules destination to bypass the aRFS tables*/
- err = mlx5_modify_rule_destination(priv->fs.ttc.rules[tt],
- &dest, NULL);
+ /* Modify ttc rules destination back to their default */
+ err = mlx5e_ttc_fwd_default_dest(priv, arfs_get_tt(i));
if (err) {
netdev_err(priv->netdev,
- "%s: modify ttc destination failed\n",
- __func__);
+ "%s: modify ttc[%d] default destination failed, err(%d)\n",
+ __func__, arfs_get_tt(i), err);
return err;
}
}
@@ -125,21 +117,17 @@ int mlx5e_arfs_disable(struct mlx5e_priv *priv)
int mlx5e_arfs_enable(struct mlx5e_priv *priv)
{
struct mlx5_flow_destination dest = {};
- int err = 0;
- int tt;
- int i;
+ int err, i;
dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
for (i = 0; i < ARFS_NUM_TYPES; i++) {
dest.ft = priv->fs.arfs.arfs_tables[i].ft.t;
- tt = arfs_get_tt(i);
/* Modify ttc rules destination to point on the aRFS FTs */
- err = mlx5_modify_rule_destination(priv->fs.ttc.rules[tt],
- &dest, NULL);
+ err = mlx5e_ttc_fwd_dest(priv, arfs_get_tt(i), &dest);
if (err) {
netdev_err(priv->netdev,
- "%s: modify ttc destination failed err=%d\n",
- __func__, err);
+ "%s: modify ttc[%d] dest to arfs, failed err(%d)\n",
+ __func__, arfs_get_tt(i), err);
arfs_disable(priv);
return err;
}
@@ -186,8 +174,10 @@ static int arfs_add_default_rule(struct mlx5e_priv *priv,
return -EINVAL;
}
+ /* FIXME: Must use mlx5e_ttc_get_default_dest(),
+ * but can't since TTC default is not setup yet !
+ */
dest.tir_num = tir[tt].tirn;
-
arfs_t->default_rule = mlx5_add_flow_rules(arfs_t->ft.t, NULL,
&flow_act,
&dest, 1);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
index 73d3dc07331f..64d002d92250 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -672,9 +672,9 @@ static void mlx5e_cleanup_ttc_rules(struct mlx5e_ttc_table *ttc)
int i;
for (i = 0; i < MLX5E_NUM_TT; i++) {
- if (!IS_ERR_OR_NULL(ttc->rules[i])) {
- mlx5_del_flow_rules(ttc->rules[i]);
- ttc->rules[i] = NULL;
+ if (!IS_ERR_OR_NULL(ttc->rules[i].rule)) {
+ mlx5_del_flow_rules(ttc->rules[i].rule);
+ ttc->rules[i].rule = NULL;
}
}
@@ -857,7 +857,8 @@ static int mlx5e_generate_ttc_table_rules(struct mlx5e_priv *priv,
struct mlx5e_ttc_table *ttc)
{
struct mlx5_flow_destination dest = {};
- struct mlx5_flow_handle **rules;
+ struct mlx5_flow_handle **trules;
+ struct mlx5e_ttc_rule *rules;
struct mlx5_flow_table *ft;
int tt;
int err;
@@ -867,39 +868,47 @@ static int mlx5e_generate_ttc_table_rules(struct mlx5e_priv *priv,
dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
for (tt = 0; tt < MLX5E_NUM_TT; tt++) {
+ struct mlx5e_ttc_rule *rule = &rules[tt];
+
if (tt == MLX5E_TT_ANY)
dest.tir_num = params->any_tt_tirn;
else
dest.tir_num = params->indir_tirn[tt];
- rules[tt] = mlx5e_generate_ttc_rule(priv, ft, &dest,
- ttc_rules[tt].etype,
- ttc_rules[tt].proto);
- if (IS_ERR(rules[tt]))
+
+ rule->rule = mlx5e_generate_ttc_rule(priv, ft, &dest,
+ ttc_rules[tt].etype,
+ ttc_rules[tt].proto);
+ if (IS_ERR(rule->rule)) {
+ err = PTR_ERR(rule->rule);
+ rule->rule = NULL;
goto del_rules;
+ }
+ rule->default_dest = dest;
}
if (!params->inner_ttc || !mlx5e_tunnel_inner_ft_supported(priv->mdev))
return 0;
- rules = ttc->tunnel_rules;
+ trules = ttc->tunnel_rules;
dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest.ft = params->inner_ttc->ft.t;
for (tt = 0; tt < MLX5E_NUM_TUNNEL_TT; tt++) {
if (!mlx5e_tunnel_proto_supported(priv->mdev,
ttc_tunnel_rules[tt].proto))
continue;
- rules[tt] = mlx5e_generate_ttc_rule(priv, ft, &dest,
- ttc_tunnel_rules[tt].etype,
- ttc_tunnel_rules[tt].proto);
- if (IS_ERR(rules[tt]))
+ trules[tt] = mlx5e_generate_ttc_rule(priv, ft, &dest,
+ ttc_tunnel_rules[tt].etype,
+ ttc_tunnel_rules[tt].proto);
+ if (IS_ERR(trules[tt])) {
+ err = PTR_ERR(trules[tt]);
+ trules[tt] = NULL;
goto del_rules;
+ }
}
return 0;
del_rules:
- err = PTR_ERR(rules[tt]);
- rules[tt] = NULL;
mlx5e_cleanup_ttc_rules(ttc);
return err;
}
@@ -1015,33 +1024,38 @@ static int mlx5e_generate_inner_ttc_table_rules(struct mlx5e_priv *priv,
struct mlx5e_ttc_table *ttc)
{
struct mlx5_flow_destination dest = {};
- struct mlx5_flow_handle **rules;
+ struct mlx5e_ttc_rule *rules;
struct mlx5_flow_table *ft;
int err;
int tt;
ft = ttc->ft.t;
rules = ttc->rules;
-
dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
+
for (tt = 0; tt < MLX5E_NUM_TT; tt++) {
+ struct mlx5e_ttc_rule *rule = &rules[tt];
+
if (tt == MLX5E_TT_ANY)
dest.tir_num = params->any_tt_tirn;
else
dest.tir_num = params->indir_tirn[tt];
- rules[tt] = mlx5e_generate_inner_ttc_rule(priv, ft, &dest,
- ttc_rules[tt].etype,
- ttc_rules[tt].proto);
- if (IS_ERR(rules[tt]))
+ rule->rule = mlx5e_generate_inner_ttc_rule(priv, ft, &dest,
+ ttc_rules[tt].etype,
+ ttc_rules[tt].proto);
+ if (IS_ERR(rule->rule)) {
+ err = PTR_ERR(rule->rule);
+ rule->rule = NULL;
goto del_rules;
+ }
+ rule->default_dest = dest;
}
return 0;
del_rules:
- err = PTR_ERR(rules[tt]);
- rules[tt] = NULL;
+
mlx5e_cleanup_ttc_rules(ttc);
return err;
}
@@ -1210,6 +1224,30 @@ int mlx5e_create_ttc_table(struct mlx5e_priv *priv, struct ttc_params *params,
return err;
}
+int mlx5e_ttc_fwd_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type,
+ struct mlx5_flow_destination *new_dest)
+{
+ return mlx5_modify_rule_destination(priv->fs.ttc.rules[type].rule, new_dest, NULL);
+}
+
+struct mlx5_flow_destination
+mlx5e_ttc_get_default_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type)
+{
+ struct mlx5_flow_destination *dest = &priv->fs.ttc.rules[type].default_dest;
+
+ WARN_ONCE(dest->type != MLX5_FLOW_DESTINATION_TYPE_TIR,
+ "TTC[%d] default dest is not setup yet", type);
+
+ return *dest;
+}
+
+int mlx5e_ttc_fwd_default_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type)
+{
+ struct mlx5_flow_destination dest = mlx5e_ttc_get_default_dest(priv, type);
+
+ return mlx5e_ttc_fwd_dest(priv, type, &dest);
+}
+
static void mlx5e_del_l2_flow_rule(struct mlx5e_priv *priv,
struct mlx5e_l2_rule *ai)
{
--
2.26.2
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