drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c
Extension
.c
Size
9798 bytes
Lines
306
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (IS_ERR(counter)) {
			esw_warn(esw->dev,
				 "vport[%d] configure ingress drop rule counter failed\n",
				 vport->vport);
			counter = NULL;
		}
		vport->ingress.legacy.drop_counter = counter;
	}

	if (!vport->info.vlan && !vport->info.qos && !vport->info.spoofchk) {
		esw_acl_ingress_lgcy_cleanup(esw, vport);
		return 0;
	}

	if (!vport->ingress.acl) {
		vport->ingress.acl = esw_acl_table_create(esw, vport,
							  MLX5_FLOW_NAMESPACE_ESW_INGRESS,
							  table_size);
		if (IS_ERR(vport->ingress.acl)) {
			err = PTR_ERR(vport->ingress.acl);
			vport->ingress.acl = NULL;
			goto out;
		}

		err = esw_acl_ingress_lgcy_groups_create(esw, vport);
		if (err)
			goto out;
	}

	esw_debug(esw->dev,
		  "vport[%d] configure ingress rules, vlan(%d) qos(%d)\n",
		  vport->vport, vport->info.vlan, vport->info.qos);

	spec = kvzalloc_obj(*spec);
	if (!spec) {
		err = -ENOMEM;
		goto out;
	}

	if ((vport->info.vlan || vport->info.qos)) {
		if (vst_mode_steering)
			vst_push_cvlan = true;
		else if (!MLX5_CAP_ESW(esw->dev, vport_cvlan_insert_always))
			vst_check_cvlan = true;
	}

	if (vst_check_cvlan || vport->info.spoofchk)
		spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;

	/* Create ingress allow rule */
	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_ALLOW;
	if (vst_push_cvlan) {
		flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
		flow_act.vlan[0].prio = vport->info.qos;
		flow_act.vlan[0].vid = vport->info.vlan;
		flow_act.vlan[0].ethtype = ETH_P_8021Q;
	}

	if (vst_check_cvlan)
		MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
				 outer_headers.cvlan_tag);

	if (vport->info.spoofchk) {
		MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
				 outer_headers.smac_47_16);
		MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
				 outer_headers.smac_15_0);
		smac_v = MLX5_ADDR_OF(fte_match_param,
				      spec->match_value,
				      outer_headers.smac_47_16);
		ether_addr_copy(smac_v, vport->info.mac);
	}

	vport->ingress.allow_rule = mlx5_add_flow_rules(vport->ingress.acl, spec,
							&flow_act, NULL, 0);
	if (IS_ERR(vport->ingress.allow_rule)) {
		err = PTR_ERR(vport->ingress.allow_rule);
		esw_warn(esw->dev,
			 "vport[%d] configure ingress allow rule, err(%d)\n",
			 vport->vport, err);
		vport->ingress.allow_rule = NULL;
		goto out;
	}

	if (!vst_check_cvlan && !vport->info.spoofchk)
		goto out;

	memset(&flow_act, 0, sizeof(flow_act));
	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
	/* Attach drop flow counter */

Annotation

Implementation Notes