net/mlx5: E-switch, refactor FDB miss rule add/remove

Currently, E-switch FDB have a single peer miss rule.
In order to support more than one peer, refactor E-switch FDB to
have peer miss rule per peer, and change the code to add/remove a
rule from specific peer.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/eswitch.h

@@ -218,7 +218,7 @@ struct mlx5_eswitch_fdb {
 			struct mlx5_flow_group *send_to_vport_grp;
 			struct mlx5_flow_group *send_to_vport_meta_grp;
 			struct mlx5_flow_group *peer_miss_grp;
-			struct mlx5_flow_handle **peer_miss_rules;
+			struct mlx5_flow_handle **peer_miss_rules[MLX5_MAX_PORTS];
 			struct mlx5_flow_group *miss_grp;
 			struct mlx5_flow_handle **send_to_vport_meta_rules;
 			struct mlx5_flow_handle *miss_rule_uni;

drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c

@@ -1132,7 +1132,7 @@ static int esw_add_fdb_peer_miss_rules(struct mlx5_eswitch *esw,
 		flows[vport->index] = flow;
 	}
 
-	esw->fdb_table.offloads.peer_miss_rules = flows;
+	esw->fdb_table.offloads.peer_miss_rules[mlx5_get_dev_index(peer_dev)] = flows;
 
 	kvfree(spec);
 	return 0;
@@ -1160,13 +1160,14 @@ static int esw_add_fdb_peer_miss_rules(struct mlx5_eswitch *esw,
 	return err;
 }
 
-static void esw_del_fdb_peer_miss_rules(struct mlx5_eswitch *esw)
+static void esw_del_fdb_peer_miss_rules(struct mlx5_eswitch *esw,
+					struct mlx5_core_dev *peer_dev)
 {
 	struct mlx5_flow_handle **flows;
 	struct mlx5_vport *vport;
 	unsigned long i;
 
-	flows = esw->fdb_table.offloads.peer_miss_rules;
+	flows = esw->fdb_table.offloads.peer_miss_rules[mlx5_get_dev_index(peer_dev)];
 
 	mlx5_esw_for_each_vf_vport(esw, i, vport, mlx5_core_max_vfs(esw->dev))
 		mlx5_del_flow_rules(flows[vport->index]);
@@ -2700,7 +2701,7 @@ static void mlx5_esw_offloads_unpair(struct mlx5_eswitch *esw,
 	mlx5e_tc_clean_fdb_peer_flows(esw);
 #endif
 	mlx5_esw_offloads_rep_event_unpair(esw, peer_esw);
-	esw_del_fdb_peer_miss_rules(esw);
+	esw_del_fdb_peer_miss_rules(esw, peer_esw->dev);
 }
 
 static int mlx5_esw_offloads_pair(struct mlx5_eswitch *esw,