diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c new file mode 100644 index 000000000000..9bda4fe2eafa --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/acl/ingress_lgcy.c @@ -0,0 +1,279 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* Copyright (c) 2020 Mellanox Technologies Inc. All rights reserved. */ + +#include "mlx5_core.h" +#include "eswitch.h" +#include "helper.h" +#include "lgcy.h" + +static void esw_acl_ingress_lgcy_rules_destroy(struct mlx5_vport *vport) +{ + if (vport->ingress.legacy.drop_rule) { + mlx5_del_flow_rules(vport->ingress.legacy.drop_rule); + vport->ingress.legacy.drop_rule = NULL; + } + esw_acl_ingress_allow_rule_destroy(vport); +} + +static int esw_acl_ingress_lgcy_groups_create(struct mlx5_eswitch *esw, + struct mlx5_vport *vport) +{ + int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in); + struct mlx5_core_dev *dev = esw->dev; + struct mlx5_flow_group *g; + void *match_criteria; + u32 *flow_group_in; + int err; + + flow_group_in = kvzalloc(inlen, GFP_KERNEL); + if (!flow_group_in) + return -ENOMEM; + + match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria); + + MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable, + MLX5_MATCH_OUTER_HEADERS); + MLX5_SET_TO_ONES(fte_match_param, match_criteria, outer_headers.cvlan_tag); + MLX5_SET_TO_ONES(fte_match_param, match_criteria, outer_headers.smac_47_16); + MLX5_SET_TO_ONES(fte_match_param, match_criteria, outer_headers.smac_15_0); + MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0); + MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 0); + + g = mlx5_create_flow_group(vport->ingress.acl, flow_group_in); + if (IS_ERR(g)) { + err = PTR_ERR(g); + esw_warn(dev, "vport[%d] ingress create untagged spoofchk flow group, err(%d)\n", + vport->vport, err); + goto spoof_err; + } + vport->ingress.legacy.allow_untagged_spoofchk_grp = g; + + memset(flow_group_in, 0, inlen); + MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable, + MLX5_MATCH_OUTER_HEADERS); + MLX5_SET_TO_ONES(fte_match_param, match_criteria, outer_headers.cvlan_tag); + MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 1); + MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 1); + + g = mlx5_create_flow_group(vport->ingress.acl, flow_group_in); + if (IS_ERR(g)) { + err = PTR_ERR(g); + esw_warn(dev, "vport[%d] ingress create untagged flow group, err(%d)\n", + vport->vport, err); + goto untagged_err; + } + vport->ingress.legacy.allow_untagged_only_grp = g; + + memset(flow_group_in, 0, inlen); + MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable, + MLX5_MATCH_OUTER_HEADERS); + MLX5_SET_TO_ONES(fte_match_param, match_criteria, outer_headers.smac_47_16); + MLX5_SET_TO_ONES(fte_match_param, match_criteria, outer_headers.smac_15_0); + MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 2); + MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 2); + + g = mlx5_create_flow_group(vport->ingress.acl, flow_group_in); + if (IS_ERR(g)) { + err = PTR_ERR(g); + esw_warn(dev, "vport[%d] ingress create spoofchk flow group, err(%d)\n", + vport->vport, err); + goto allow_spoof_err; + } + vport->ingress.legacy.allow_spoofchk_only_grp = g; + + memset(flow_group_in, 0, inlen); + MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 3); + MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 3); + + g = mlx5_create_flow_group(vport->ingress.acl, flow_group_in); + if (IS_ERR(g)) { + err = PTR_ERR(g); + esw_warn(dev, "vport[%d] ingress create drop flow group, err(%d)\n", + vport->vport, err); + goto drop_err; + } + vport->ingress.legacy.drop_grp = g; + kvfree(flow_group_in); + return 0; + +drop_err: + if (!IS_ERR_OR_NULL(vport->ingress.legacy.allow_spoofchk_only_grp)) { + mlx5_destroy_flow_group(vport->ingress.legacy.allow_spoofchk_only_grp); + vport->ingress.legacy.allow_spoofchk_only_grp = NULL; + } +allow_spoof_err: + if (!IS_ERR_OR_NULL(vport->ingress.legacy.allow_untagged_only_grp)) { + mlx5_destroy_flow_group(vport->ingress.legacy.allow_untagged_only_grp); + vport->ingress.legacy.allow_untagged_only_grp = NULL; + } +untagged_err: + if (!IS_ERR_OR_NULL(vport->ingress.legacy.allow_untagged_spoofchk_grp)) { + mlx5_destroy_flow_group(vport->ingress.legacy.allow_untagged_spoofchk_grp); + vport->ingress.legacy.allow_untagged_spoofchk_grp = NULL; + } +spoof_err: + kvfree(flow_group_in); + return err; +} + +static void esw_acl_ingress_lgcy_groups_destroy(struct mlx5_vport *vport) +{ + if (vport->ingress.legacy.allow_spoofchk_only_grp) { + mlx5_destroy_flow_group(vport->ingress.legacy.allow_spoofchk_only_grp); + vport->ingress.legacy.allow_spoofchk_only_grp = NULL; + } + if (vport->ingress.legacy.allow_untagged_only_grp) { + mlx5_destroy_flow_group(vport->ingress.legacy.allow_untagged_only_grp); + vport->ingress.legacy.allow_untagged_only_grp = NULL; + } + if (vport->ingress.legacy.allow_untagged_spoofchk_grp) { + mlx5_destroy_flow_group(vport->ingress.legacy.allow_untagged_spoofchk_grp); + vport->ingress.legacy.allow_untagged_spoofchk_grp = NULL; + } + if (vport->ingress.legacy.drop_grp) { + mlx5_destroy_flow_group(vport->ingress.legacy.drop_grp); + vport->ingress.legacy.drop_grp = NULL; + } +} + +int esw_acl_ingress_lgcy_setup(struct mlx5_eswitch *esw, + struct mlx5_vport *vport) +{ + struct mlx5_flow_destination drop_ctr_dst = {}; + struct mlx5_flow_destination *dst = NULL; + struct mlx5_flow_act flow_act = {}; + struct mlx5_flow_spec *spec = NULL; + struct mlx5_fc *counter = NULL; + /* The ingress acl table contains 4 groups + * (2 active rules at the same time - + * 1 allow rule from one of the first 3 groups. + * 1 drop rule from the last group): + * 1)Allow untagged traffic with smac=original mac. + * 2)Allow untagged traffic. + * 3)Allow traffic with smac=original mac. + * 4)Drop all other traffic. + */ + int table_size = 4; + int dest_num = 0; + int err = 0; + u8 *smac_v; + + esw_acl_ingress_lgcy_rules_destroy(vport); + + if (MLX5_CAP_ESW_INGRESS_ACL(esw->dev, flow_counter)) { + counter = mlx5_fc_create(esw->dev, false); + if (IS_ERR(counter)) + esw_warn(esw->dev, + "vport[%d] configure ingress drop rule counter failed\n", + vport->vport); + 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->vport, + MLX5_FLOW_NAMESPACE_ESW_INGRESS, + table_size); + if (IS_ERR_OR_NULL(vport->ingress.acl)) { + err = PTR_ERR(vport->ingress.acl); + vport->ingress.acl = NULL; + return err; + } + + 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(sizeof(*spec), GFP_KERNEL); + if (!spec) { + err = -ENOMEM; + goto out; + } + + if (vport->info.vlan || vport->info.qos) + 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); + } + + /* Create ingress allow rule */ + memset(spec, 0, sizeof(*spec)); + spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS; + flow_act.action = MLX5_FLOW_CONTEXT_ACTION_ALLOW; + 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; + } + + memset(&flow_act, 0, sizeof(flow_act)); + flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP; + /* Attach drop flow counter */ + if (counter) { + flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; + drop_ctr_dst.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER; + drop_ctr_dst.counter_id = mlx5_fc_id(counter); + dst = &drop_ctr_dst; + dest_num++; + } + vport->ingress.legacy.drop_rule = + mlx5_add_flow_rules(vport->ingress.acl, NULL, + &flow_act, dst, dest_num); + if (IS_ERR(vport->ingress.legacy.drop_rule)) { + err = PTR_ERR(vport->ingress.legacy.drop_rule); + esw_warn(esw->dev, + "vport[%d] configure ingress drop rule, err(%d)\n", + vport->vport, err); + vport->ingress.legacy.drop_rule = NULL; + goto out; + } + kvfree(spec); + return 0; + +out: + esw_acl_ingress_lgcy_cleanup(esw, vport); + kvfree(spec); + return err; +} + +void esw_acl_ingress_lgcy_cleanup(struct mlx5_eswitch *esw, + struct mlx5_vport *vport) +{ + if (IS_ERR_OR_NULL(vport->ingress.acl)) + goto clean_drop_counter; + + esw_debug(esw->dev, "Destroy vport[%d] E-Switch ingress ACL\n", vport->vport); + + esw_acl_ingress_lgcy_rules_destroy(vport); + esw_acl_ingress_lgcy_groups_destroy(vport); + esw_acl_ingress_table_destroy(vport); + +clean_drop_counter: + if (!IS_ERR_OR_NULL(vport->ingress.legacy.drop_counter)) { + mlx5_fc_destroy(esw->dev, vport->ingress.legacy.drop_counter); + vport->ingress.legacy.drop_counter = NULL; + } +} |