netdev - [net-next 04/15] net/mlx5: E-switch, Introduce flag to indicate if fdb table is created

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Date:   Wed, 29 Jun 2022 17:59:54 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Chris Mi <cmi@...dia.com>, Mark Bloch <mbloch@...dia.com>,
        Roi Dayan <roid@...dia.com>
Subject: [net-next 04/15] net/mlx5: E-switch, Introduce flag to indicate if fdb table is created

From: Chris Mi <cmi@...dia.com>

Introduce flag to indicate if fdb table is created as a pre-step
to prepare for removing dependency between sriov and eswitch mode
in the downstream patches.

Signed-off-by: Chris Mi <cmi@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Reviewed-by: Roi Dayan <roid@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 3 +++
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.h | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 823bfcff7846..b9a3473f5672 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1274,6 +1274,8 @@ int mlx5_eswitch_enable_locked(struct mlx5_eswitch *esw, int mode, int num_vfs)
 	if (err)
 		goto abort;
 
+	esw->fdb_table.flags |= MLX5_ESW_FDB_CREATED;
+
 	mlx5_eswitch_event_handlers_register(esw);
 
 	esw_info(esw->dev, "Enable: mode(%s), nvfs(%d), active vports(%d)\n",
@@ -1356,6 +1358,7 @@ void mlx5_eswitch_disable_locked(struct mlx5_eswitch *esw, bool clear_vf)
 
 	mlx5_eswitch_event_handlers_unregister(esw);
 
+	esw->fdb_table.flags &= ~MLX5_ESW_FDB_CREATED;
 	if (esw->mode == MLX5_ESWITCH_LEGACY)
 		esw_legacy_disable(esw);
 	else if (esw->mode == MLX5_ESWITCH_OFFLOADS)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index a08f5315d768..a9ba0e324834 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -287,6 +287,10 @@ enum {
 
 struct mlx5_esw_bridge_offloads;
 
+enum {
+	MLX5_ESW_FDB_CREATED = BIT(0),
+};
+
 struct mlx5_eswitch {
 	struct mlx5_core_dev    *dev;
 	struct mlx5_nb          nb;
@@ -576,6 +580,11 @@ mlx5_esw_devlink_port_index_to_vport_num(unsigned int dl_port_index)
 	return dl_port_index & 0xffff;
 }
 
+static inline bool mlx5_esw_is_fdb_created(struct mlx5_eswitch *esw)
+{
+	return esw->fdb_table.flags & MLX5_ESW_FDB_CREATED;
+}
+
 /* TODO: This mlx5e_tc function shouldn't be called by eswitch */
 void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw);
 
-- 
2.36.1