/* SPDX-License-Identifier: BSD-3-Clause * * Copyright(c) 2019-2020 Xilinx, Inc. * Copyright(c) 2019 Solarflare Communications Inc. * * This software was jointly developed between OKTET Labs (under contract * for Solarflare) and Solarflare Communications, Inc. */ #include #include #include "efx.h" #include "sfc.h" #include "sfc_log.h" #include "sfc_switch.h" static int sfc_mae_assign_entity_mport(struct sfc_adapter *sa, efx_mport_sel_t *mportp) { const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic); return efx_mae_mport_by_pcie_function(encp->enc_pf, encp->enc_vf, mportp); } int sfc_mae_attach(struct sfc_adapter *sa) { struct sfc_adapter_shared * const sas = sfc_sa2shared(sa); struct sfc_mae_switch_port_request switch_port_request = {0}; const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic); efx_mport_sel_t entity_mport; struct sfc_mae *mae = &sa->mae; efx_mae_limits_t limits; int rc; sfc_log_init(sa, "entry"); if (!encp->enc_mae_supported) { mae->status = SFC_MAE_STATUS_UNSUPPORTED; return 0; } sfc_log_init(sa, "init MAE"); rc = efx_mae_init(sa->nic); if (rc != 0) goto fail_mae_init; sfc_log_init(sa, "get MAE limits"); rc = efx_mae_get_limits(sa->nic, &limits); if (rc != 0) goto fail_mae_get_limits; sfc_log_init(sa, "assign entity MPORT"); rc = sfc_mae_assign_entity_mport(sa, &entity_mport); if (rc != 0) goto fail_mae_assign_entity_mport; sfc_log_init(sa, "assign RTE switch domain"); rc = sfc_mae_assign_switch_domain(sa, &mae->switch_domain_id); if (rc != 0) goto fail_mae_assign_switch_domain; sfc_log_init(sa, "assign RTE switch port"); switch_port_request.type = SFC_MAE_SWITCH_PORT_INDEPENDENT; switch_port_request.entity_mportp = &entity_mport; /* * As of now, the driver does not support representors, so * RTE ethdev MPORT simply matches that of the entity. */ switch_port_request.ethdev_mportp = &entity_mport; switch_port_request.ethdev_port_id = sas->port_id; rc = sfc_mae_assign_switch_port(mae->switch_domain_id, &switch_port_request, &mae->switch_port_id); if (rc != 0) goto fail_mae_assign_switch_port; mae->status = SFC_MAE_STATUS_SUPPORTED; mae->nb_outer_rule_prios_max = limits.eml_max_n_outer_prios; mae->nb_action_rule_prios_max = limits.eml_max_n_action_prios; mae->encap_types_supported = limits.eml_encap_types_supported; TAILQ_INIT(&mae->outer_rules); TAILQ_INIT(&mae->action_sets); sfc_log_init(sa, "done"); return 0; fail_mae_assign_switch_port: fail_mae_assign_switch_domain: fail_mae_assign_entity_mport: fail_mae_get_limits: efx_mae_fini(sa->nic); fail_mae_init: sfc_log_init(sa, "failed %d", rc); return rc; } void sfc_mae_detach(struct sfc_adapter *sa) { struct sfc_mae *mae = &sa->mae; enum sfc_mae_status status_prev = mae->status; sfc_log_init(sa, "entry"); mae->nb_action_rule_prios_max = 0; mae->status = SFC_MAE_STATUS_UNKNOWN; if (status_prev != SFC_MAE_STATUS_SUPPORTED) return; efx_mae_fini(sa->nic); sfc_log_init(sa, "done"); } static struct sfc_mae_outer_rule * sfc_mae_outer_rule_attach(struct sfc_adapter *sa, const efx_mae_match_spec_t *match_spec, efx_tunnel_protocol_t encap_type) { struct sfc_mae_outer_rule *rule; struct sfc_mae *mae = &sa->mae; SFC_ASSERT(sfc_adapter_is_locked(sa)); TAILQ_FOREACH(rule, &mae->outer_rules, entries) { if (efx_mae_match_specs_equal(rule->match_spec, match_spec) && rule->encap_type == encap_type) { ++(rule->refcnt); return rule; } } return NULL; } static int sfc_mae_outer_rule_add(struct sfc_adapter *sa, efx_mae_match_spec_t *match_spec, efx_tunnel_protocol_t encap_type, struct sfc_mae_outer_rule **rulep) { struct sfc_mae_outer_rule *rule; struct sfc_mae *mae = &sa->mae; SFC_ASSERT(sfc_adapter_is_locked(sa)); rule = rte_zmalloc("sfc_mae_outer_rule", sizeof(*rule), 0); if (rule == NULL) return ENOMEM; rule->refcnt = 1; rule->match_spec = match_spec; rule->encap_type = encap_type; rule->fw_rsrc.rule_id.id = EFX_MAE_RSRC_ID_INVALID; TAILQ_INSERT_TAIL(&mae->outer_rules, rule, entries); *rulep = rule; return 0; } static void sfc_mae_outer_rule_del(struct sfc_adapter *sa, struct sfc_mae_outer_rule *rule) { struct sfc_mae *mae = &sa->mae; SFC_ASSERT(sfc_adapter_is_locked(sa)); SFC_ASSERT(rule->refcnt != 0); --(rule->refcnt); if (rule->refcnt != 0) return; SFC_ASSERT(rule->fw_rsrc.rule_id.id == EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(rule->fw_rsrc.refcnt == 0); efx_mae_match_spec_fini(sa->nic, rule->match_spec); TAILQ_REMOVE(&mae->outer_rules, rule, entries); rte_free(rule); } static int sfc_mae_outer_rule_enable(struct sfc_adapter *sa, struct sfc_mae_outer_rule *rule, efx_mae_match_spec_t *match_spec_action) { struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc; int rc; SFC_ASSERT(sfc_adapter_is_locked(sa)); if (fw_rsrc->refcnt == 0) { SFC_ASSERT(fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(rule->match_spec != NULL); rc = efx_mae_outer_rule_insert(sa->nic, rule->match_spec, rule->encap_type, &fw_rsrc->rule_id); if (rc != 0) return rc; } rc = efx_mae_match_spec_outer_rule_id_set(match_spec_action, &fw_rsrc->rule_id); if (rc != 0) { if (fw_rsrc->refcnt == 0) { (void)efx_mae_outer_rule_remove(sa->nic, &fw_rsrc->rule_id); } return rc; } ++(fw_rsrc->refcnt); return 0; } static int sfc_mae_outer_rule_disable(struct sfc_adapter *sa, struct sfc_mae_outer_rule *rule) { struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc; int rc; SFC_ASSERT(sfc_adapter_is_locked(sa)); SFC_ASSERT(fw_rsrc->rule_id.id != EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(fw_rsrc->refcnt != 0); if (fw_rsrc->refcnt == 1) { rc = efx_mae_outer_rule_remove(sa->nic, &fw_rsrc->rule_id); if (rc != 0) return rc; fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID; } --(fw_rsrc->refcnt); return 0; } static struct sfc_mae_action_set * sfc_mae_action_set_attach(struct sfc_adapter *sa, const efx_mae_actions_t *spec) { struct sfc_mae_action_set *action_set; struct sfc_mae *mae = &sa->mae; SFC_ASSERT(sfc_adapter_is_locked(sa)); TAILQ_FOREACH(action_set, &mae->action_sets, entries) { if (efx_mae_action_set_specs_equal(action_set->spec, spec)) { ++(action_set->refcnt); return action_set; } } return NULL; } static int sfc_mae_action_set_add(struct sfc_adapter *sa, efx_mae_actions_t *spec, struct sfc_mae_action_set **action_setp) { struct sfc_mae_action_set *action_set; struct sfc_mae *mae = &sa->mae; SFC_ASSERT(sfc_adapter_is_locked(sa)); action_set = rte_zmalloc("sfc_mae_action_set", sizeof(*action_set), 0); if (action_set == NULL) return ENOMEM; action_set->refcnt = 1; action_set->spec = spec; action_set->fw_rsrc.aset_id.id = EFX_MAE_RSRC_ID_INVALID; TAILQ_INSERT_TAIL(&mae->action_sets, action_set, entries); *action_setp = action_set; return 0; } static void sfc_mae_action_set_del(struct sfc_adapter *sa, struct sfc_mae_action_set *action_set) { struct sfc_mae *mae = &sa->mae; SFC_ASSERT(sfc_adapter_is_locked(sa)); SFC_ASSERT(action_set->refcnt != 0); --(action_set->refcnt); if (action_set->refcnt != 0) return; SFC_ASSERT(action_set->fw_rsrc.aset_id.id == EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(action_set->fw_rsrc.refcnt == 0); efx_mae_action_set_spec_fini(sa->nic, action_set->spec); TAILQ_REMOVE(&mae->action_sets, action_set, entries); rte_free(action_set); } static int sfc_mae_action_set_enable(struct sfc_adapter *sa, struct sfc_mae_action_set *action_set) { struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc; int rc; SFC_ASSERT(sfc_adapter_is_locked(sa)); if (fw_rsrc->refcnt == 0) { SFC_ASSERT(fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(action_set->spec != NULL); rc = efx_mae_action_set_alloc(sa->nic, action_set->spec, &fw_rsrc->aset_id); if (rc != 0) return rc; } ++(fw_rsrc->refcnt); return 0; } static int sfc_mae_action_set_disable(struct sfc_adapter *sa, struct sfc_mae_action_set *action_set) { struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc; int rc; SFC_ASSERT(sfc_adapter_is_locked(sa)); SFC_ASSERT(fw_rsrc->aset_id.id != EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(fw_rsrc->refcnt != 0); if (fw_rsrc->refcnt == 1) { rc = efx_mae_action_set_free(sa->nic, &fw_rsrc->aset_id); if (rc != 0) return rc; fw_rsrc->aset_id.id = EFX_MAE_RSRC_ID_INVALID; } --(fw_rsrc->refcnt); return 0; } void sfc_mae_flow_cleanup(struct sfc_adapter *sa, struct rte_flow *flow) { struct sfc_flow_spec *spec; struct sfc_flow_spec_mae *spec_mae; if (flow == NULL) return; spec = &flow->spec; if (spec == NULL) return; spec_mae = &spec->mae; SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID); if (spec_mae->outer_rule != NULL) sfc_mae_outer_rule_del(sa, spec_mae->outer_rule); if (spec_mae->action_set != NULL) sfc_mae_action_set_del(sa, spec_mae->action_set); if (spec_mae->match_spec != NULL) efx_mae_match_spec_fini(sa->nic, spec_mae->match_spec); } static int sfc_mae_set_ethertypes(struct sfc_mae_parse_ctx *ctx) { struct sfc_mae_pattern_data *pdata = &ctx->pattern_data; const efx_mae_field_id_t *fremap = ctx->field_ids_remap; const efx_mae_field_id_t field_ids[] = { EFX_MAE_FIELD_VLAN0_PROTO_BE, EFX_MAE_FIELD_VLAN1_PROTO_BE, }; const struct sfc_mae_ethertype *et; unsigned int i; int rc; /* * In accordance with RTE flow API convention, the innermost L2 * item's "type" ("inner_type") is a L3 EtherType. If there is * no L3 item, it's 0x0000/0x0000. */ et = &pdata->ethertypes[pdata->nb_vlan_tags]; rc = efx_mae_match_spec_field_set(ctx->match_spec, fremap[EFX_MAE_FIELD_ETHER_TYPE_BE], sizeof(et->value), (const uint8_t *)&et->value, sizeof(et->mask), (const uint8_t *)&et->mask); if (rc != 0) return rc; /* * sfc_mae_rule_parse_item_vlan() has already made sure * that pdata->nb_vlan_tags does not exceed this figure. */ RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2); for (i = 0; i < pdata->nb_vlan_tags; ++i) { et = &pdata->ethertypes[i]; rc = efx_mae_match_spec_field_set(ctx->match_spec, fremap[field_ids[i]], sizeof(et->value), (const uint8_t *)&et->value, sizeof(et->mask), (const uint8_t *)&et->mask); if (rc != 0) return rc; } return 0; } static int sfc_mae_rule_process_pattern_data(struct sfc_mae_parse_ctx *ctx, struct rte_flow_error *error) { const efx_mae_field_id_t *fremap = ctx->field_ids_remap; struct sfc_mae_pattern_data *pdata = &ctx->pattern_data; struct sfc_mae_ethertype *ethertypes = pdata->ethertypes; const rte_be16_t supported_tpids[] = { /* VLAN standard TPID (always the first element) */ RTE_BE16(RTE_ETHER_TYPE_VLAN), /* Double-tagging TPIDs */ RTE_BE16(RTE_ETHER_TYPE_QINQ), RTE_BE16(RTE_ETHER_TYPE_QINQ1), RTE_BE16(RTE_ETHER_TYPE_QINQ2), RTE_BE16(RTE_ETHER_TYPE_QINQ3), }; unsigned int nb_supported_tpids = RTE_DIM(supported_tpids); unsigned int ethertype_idx; const uint8_t *valuep; const uint8_t *maskp; int rc; if (pdata->innermost_ethertype_restriction.mask != 0 && pdata->nb_vlan_tags < SFC_MAE_MATCH_VLAN_MAX_NTAGS) { /* * If a single item VLAN is followed by a L3 item, value * of "type" in item ETH can't be a double-tagging TPID. */ nb_supported_tpids = 1; } /* * sfc_mae_rule_parse_item_vlan() has already made sure * that pdata->nb_vlan_tags does not exceed this figure. */ RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2); for (ethertype_idx = 0; ethertype_idx < pdata->nb_vlan_tags; ++ethertype_idx) { unsigned int tpid_idx; /* Exact match is supported only. */ if (ethertypes[ethertype_idx].mask != RTE_BE16(0xffff)) { rc = EINVAL; goto fail; } for (tpid_idx = pdata->nb_vlan_tags - ethertype_idx - 1; tpid_idx < nb_supported_tpids; ++tpid_idx) { if (ethertypes[ethertype_idx].value == supported_tpids[tpid_idx]) break; } if (tpid_idx == nb_supported_tpids) { rc = EINVAL; goto fail; } nb_supported_tpids = 1; } if (pdata->innermost_ethertype_restriction.mask == RTE_BE16(0xffff)) { struct sfc_mae_ethertype *et = ðertypes[ethertype_idx]; if (et->mask == 0) { et->mask = RTE_BE16(0xffff); et->value = pdata->innermost_ethertype_restriction.value; } else if (et->mask != RTE_BE16(0xffff) || et->value != pdata->innermost_ethertype_restriction.value) { rc = EINVAL; goto fail; } } /* * Now, when the number of VLAN tags is known, set fields * ETHER_TYPE, VLAN0_PROTO and VLAN1_PROTO so that the first * one is either a valid L3 EtherType (or 0x0000/0x0000), * and the last two are valid TPIDs (or 0x0000/0x0000). */ rc = sfc_mae_set_ethertypes(ctx); if (rc != 0) goto fail; if (pdata->l3_next_proto_restriction_mask == 0xff) { if (pdata->l3_next_proto_mask == 0) { pdata->l3_next_proto_mask = 0xff; pdata->l3_next_proto_value = pdata->l3_next_proto_restriction_value; } else if (pdata->l3_next_proto_mask != 0xff || pdata->l3_next_proto_value != pdata->l3_next_proto_restriction_value) { rc = EINVAL; goto fail; } } valuep = (const uint8_t *)&pdata->l3_next_proto_value; maskp = (const uint8_t *)&pdata->l3_next_proto_mask; rc = efx_mae_match_spec_field_set(ctx->match_spec, fremap[EFX_MAE_FIELD_IP_PROTO], sizeof(pdata->l3_next_proto_value), valuep, sizeof(pdata->l3_next_proto_mask), maskp); if (rc != 0) goto fail; return 0; fail: return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL, "Failed to process pattern data"); } static int sfc_mae_rule_parse_item_port_id(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; const struct rte_flow_item_port_id supp_mask = { .id = 0xffffffff, }; const void *def_mask = &rte_flow_item_port_id_mask; const struct rte_flow_item_port_id *spec = NULL; const struct rte_flow_item_port_id *mask = NULL; efx_mport_sel_t mport_sel; int rc; if (ctx_mae->match_mport_set) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item, "Can't handle multiple traffic source items"); } rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, def_mask, sizeof(struct rte_flow_item_port_id), error); if (rc != 0) return rc; if (mask->id != supp_mask.id) { return rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item, "Bad mask in the PORT_ID pattern item"); } /* If "spec" is not set, could be any port ID */ if (spec == NULL) return 0; if (spec->id > UINT16_MAX) { return rte_flow_error_set(error, EOVERFLOW, RTE_FLOW_ERROR_TYPE_ITEM, item, "The port ID is too large"); } rc = sfc_mae_switch_port_by_ethdev(ctx_mae->sa->mae.switch_domain_id, spec->id, &mport_sel); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Can't find RTE ethdev by the port ID"); } rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_sel, NULL); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to set MPORT for the port ID"); } ctx_mae->match_mport_set = B_TRUE; return 0; } static int sfc_mae_rule_parse_item_phy_port(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; const struct rte_flow_item_phy_port supp_mask = { .index = 0xffffffff, }; const void *def_mask = &rte_flow_item_phy_port_mask; const struct rte_flow_item_phy_port *spec = NULL; const struct rte_flow_item_phy_port *mask = NULL; efx_mport_sel_t mport_v; int rc; if (ctx_mae->match_mport_set) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item, "Can't handle multiple traffic source items"); } rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, def_mask, sizeof(struct rte_flow_item_phy_port), error); if (rc != 0) return rc; if (mask->index != supp_mask.index) { return rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item, "Bad mask in the PHY_PORT pattern item"); } /* If "spec" is not set, could be any physical port */ if (spec == NULL) return 0; rc = efx_mae_mport_by_phy_port(spec->index, &mport_v); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to convert the PHY_PORT index"); } rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to set MPORT for the PHY_PORT"); } ctx_mae->match_mport_set = B_TRUE; return 0; } static int sfc_mae_rule_parse_item_pf(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic); efx_mport_sel_t mport_v; int rc; if (ctx_mae->match_mport_set) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item, "Can't handle multiple traffic source items"); } rc = efx_mae_mport_by_pcie_function(encp->enc_pf, EFX_PCI_VF_INVALID, &mport_v); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to convert the PF ID"); } rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to set MPORT for the PF"); } ctx_mae->match_mport_set = B_TRUE; return 0; } static int sfc_mae_rule_parse_item_vf(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic); const struct rte_flow_item_vf supp_mask = { .id = 0xffffffff, }; const void *def_mask = &rte_flow_item_vf_mask; const struct rte_flow_item_vf *spec = NULL; const struct rte_flow_item_vf *mask = NULL; efx_mport_sel_t mport_v; int rc; if (ctx_mae->match_mport_set) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item, "Can't handle multiple traffic source items"); } rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, def_mask, sizeof(struct rte_flow_item_vf), error); if (rc != 0) return rc; if (mask->id != supp_mask.id) { return rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item, "Bad mask in the VF pattern item"); } /* * If "spec" is not set, the item requests any VF related to the * PF of the current DPDK port (but not the PF itself). * Reject this match criterion as unsupported. */ if (spec == NULL) { return rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item, "Bad spec in the VF pattern item"); } rc = efx_mae_mport_by_pcie_function(encp->enc_pf, spec->id, &mport_v); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to convert the PF + VF IDs"); } rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to set MPORT for the PF + VF"); } ctx_mae->match_mport_set = B_TRUE; return 0; } /* * Having this field ID in a field locator means that this * locator cannot be used to actually set the field at the * time when the corresponding item gets encountered. Such * fields get stashed in the parsing context instead. This * is required to resolve dependencies between the stashed * fields. See sfc_mae_rule_process_pattern_data(). */ #define SFC_MAE_FIELD_HANDLING_DEFERRED EFX_MAE_FIELD_NIDS struct sfc_mae_field_locator { efx_mae_field_id_t field_id; size_t size; /* Field offset in the corresponding rte_flow_item_ struct */ size_t ofst; }; static void sfc_mae_item_build_supp_mask(const struct sfc_mae_field_locator *field_locators, unsigned int nb_field_locators, void *mask_ptr, size_t mask_size) { unsigned int i; memset(mask_ptr, 0, mask_size); for (i = 0; i < nb_field_locators; ++i) { const struct sfc_mae_field_locator *fl = &field_locators[i]; SFC_ASSERT(fl->ofst + fl->size <= mask_size); memset(RTE_PTR_ADD(mask_ptr, fl->ofst), 0xff, fl->size); } } static int sfc_mae_parse_item(const struct sfc_mae_field_locator *field_locators, unsigned int nb_field_locators, const uint8_t *spec, const uint8_t *mask, struct sfc_mae_parse_ctx *ctx, struct rte_flow_error *error) { const efx_mae_field_id_t *fremap = ctx->field_ids_remap; unsigned int i; int rc = 0; for (i = 0; i < nb_field_locators; ++i) { const struct sfc_mae_field_locator *fl = &field_locators[i]; if (fl->field_id == SFC_MAE_FIELD_HANDLING_DEFERRED) continue; rc = efx_mae_match_spec_field_set(ctx->match_spec, fremap[fl->field_id], fl->size, spec + fl->ofst, fl->size, mask + fl->ofst); if (rc != 0) break; } if (rc != 0) { rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL, "Failed to process item fields"); } return rc; } static const struct sfc_mae_field_locator flocs_eth[] = { { /* * This locator is used only for building supported fields mask. * The field is handled by sfc_mae_rule_process_pattern_data(). */ SFC_MAE_FIELD_HANDLING_DEFERRED, RTE_SIZEOF_FIELD(struct rte_flow_item_eth, type), offsetof(struct rte_flow_item_eth, type), }, { EFX_MAE_FIELD_ETH_DADDR_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_eth, dst), offsetof(struct rte_flow_item_eth, dst), }, { EFX_MAE_FIELD_ETH_SADDR_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_eth, src), offsetof(struct rte_flow_item_eth, src), }, }; static int sfc_mae_rule_parse_item_eth(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; struct rte_flow_item_eth supp_mask; const uint8_t *spec = NULL; const uint8_t *mask = NULL; int rc; sfc_mae_item_build_supp_mask(flocs_eth, RTE_DIM(flocs_eth), &supp_mask, sizeof(supp_mask)); rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, &rte_flow_item_eth_mask, sizeof(struct rte_flow_item_eth), error); if (rc != 0) return rc; if (spec != NULL) { struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data; struct sfc_mae_ethertype *ethertypes = pdata->ethertypes; const struct rte_flow_item_eth *item_spec; const struct rte_flow_item_eth *item_mask; item_spec = (const struct rte_flow_item_eth *)spec; item_mask = (const struct rte_flow_item_eth *)mask; ethertypes[0].value = item_spec->type; ethertypes[0].mask = item_mask->type; } else { /* * The specification is empty. This is wrong in the case * when there are more network patterns in line. Other * than that, any Ethernet can match. All of that is * checked at the end of parsing. */ return 0; } return sfc_mae_parse_item(flocs_eth, RTE_DIM(flocs_eth), spec, mask, ctx_mae, error); } static const struct sfc_mae_field_locator flocs_vlan[] = { /* Outermost tag */ { EFX_MAE_FIELD_VLAN0_TCI_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci), offsetof(struct rte_flow_item_vlan, tci), }, { /* * This locator is used only for building supported fields mask. * The field is handled by sfc_mae_rule_process_pattern_data(). */ SFC_MAE_FIELD_HANDLING_DEFERRED, RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type), offsetof(struct rte_flow_item_vlan, inner_type), }, /* Innermost tag */ { EFX_MAE_FIELD_VLAN1_TCI_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci), offsetof(struct rte_flow_item_vlan, tci), }, { /* * This locator is used only for building supported fields mask. * The field is handled by sfc_mae_rule_process_pattern_data(). */ SFC_MAE_FIELD_HANDLING_DEFERRED, RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type), offsetof(struct rte_flow_item_vlan, inner_type), }, }; static int sfc_mae_rule_parse_item_vlan(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data; const struct sfc_mae_field_locator *flocs; struct rte_flow_item_vlan supp_mask; const uint8_t *spec = NULL; const uint8_t *mask = NULL; unsigned int nb_flocs; int rc; RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2); if (pdata->nb_vlan_tags == SFC_MAE_MATCH_VLAN_MAX_NTAGS) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item, "Can't match that many VLAN tags"); } nb_flocs = RTE_DIM(flocs_vlan) / SFC_MAE_MATCH_VLAN_MAX_NTAGS; flocs = flocs_vlan + pdata->nb_vlan_tags * nb_flocs; /* If parsing fails, this can remain incremented. */ ++pdata->nb_vlan_tags; sfc_mae_item_build_supp_mask(flocs, nb_flocs, &supp_mask, sizeof(supp_mask)); rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, &rte_flow_item_vlan_mask, sizeof(struct rte_flow_item_vlan), error); if (rc != 0) return rc; if (spec != NULL) { struct sfc_mae_ethertype *ethertypes = pdata->ethertypes; const struct rte_flow_item_vlan *item_spec; const struct rte_flow_item_vlan *item_mask; item_spec = (const struct rte_flow_item_vlan *)spec; item_mask = (const struct rte_flow_item_vlan *)mask; ethertypes[pdata->nb_vlan_tags].value = item_spec->inner_type; ethertypes[pdata->nb_vlan_tags].mask = item_mask->inner_type; } else { /* * The specification is empty. This is wrong in the case * when there are more network patterns in line. Other * than that, any Ethernet can match. All of that is * checked at the end of parsing. */ return 0; } return sfc_mae_parse_item(flocs, nb_flocs, spec, mask, ctx_mae, error); } static const struct sfc_mae_field_locator flocs_ipv4[] = { { EFX_MAE_FIELD_SRC_IP4_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.src_addr), offsetof(struct rte_flow_item_ipv4, hdr.src_addr), }, { EFX_MAE_FIELD_DST_IP4_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.dst_addr), offsetof(struct rte_flow_item_ipv4, hdr.dst_addr), }, { /* * This locator is used only for building supported fields mask. * The field is handled by sfc_mae_rule_process_pattern_data(). */ SFC_MAE_FIELD_HANDLING_DEFERRED, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.next_proto_id), offsetof(struct rte_flow_item_ipv4, hdr.next_proto_id), }, { EFX_MAE_FIELD_IP_TOS, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.type_of_service), offsetof(struct rte_flow_item_ipv4, hdr.type_of_service), }, { EFX_MAE_FIELD_IP_TTL, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.time_to_live), offsetof(struct rte_flow_item_ipv4, hdr.time_to_live), }, }; static int sfc_mae_rule_parse_item_ipv4(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { rte_be16_t ethertype_ipv4_be = RTE_BE16(RTE_ETHER_TYPE_IPV4); struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data; struct rte_flow_item_ipv4 supp_mask; const uint8_t *spec = NULL; const uint8_t *mask = NULL; int rc; sfc_mae_item_build_supp_mask(flocs_ipv4, RTE_DIM(flocs_ipv4), &supp_mask, sizeof(supp_mask)); rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, &rte_flow_item_ipv4_mask, sizeof(struct rte_flow_item_ipv4), error); if (rc != 0) return rc; pdata->innermost_ethertype_restriction.value = ethertype_ipv4_be; pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff); if (spec != NULL) { const struct rte_flow_item_ipv4 *item_spec; const struct rte_flow_item_ipv4 *item_mask; item_spec = (const struct rte_flow_item_ipv4 *)spec; item_mask = (const struct rte_flow_item_ipv4 *)mask; pdata->l3_next_proto_value = item_spec->hdr.next_proto_id; pdata->l3_next_proto_mask = item_mask->hdr.next_proto_id; } else { return 0; } return sfc_mae_parse_item(flocs_ipv4, RTE_DIM(flocs_ipv4), spec, mask, ctx_mae, error); } static const struct sfc_mae_field_locator flocs_ipv6[] = { { EFX_MAE_FIELD_SRC_IP6_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.src_addr), offsetof(struct rte_flow_item_ipv6, hdr.src_addr), }, { EFX_MAE_FIELD_DST_IP6_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.dst_addr), offsetof(struct rte_flow_item_ipv6, hdr.dst_addr), }, { /* * This locator is used only for building supported fields mask. * The field is handled by sfc_mae_rule_process_pattern_data(). */ SFC_MAE_FIELD_HANDLING_DEFERRED, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.proto), offsetof(struct rte_flow_item_ipv6, hdr.proto), }, { EFX_MAE_FIELD_IP_TTL, RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.hop_limits), offsetof(struct rte_flow_item_ipv6, hdr.hop_limits), }, }; static int sfc_mae_rule_parse_item_ipv6(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { rte_be16_t ethertype_ipv6_be = RTE_BE16(RTE_ETHER_TYPE_IPV6); struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; const efx_mae_field_id_t *fremap = ctx_mae->field_ids_remap; struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data; struct rte_flow_item_ipv6 supp_mask; const uint8_t *spec = NULL; const uint8_t *mask = NULL; rte_be32_t vtc_flow_be; uint32_t vtc_flow; uint8_t tc_value; uint8_t tc_mask; int rc; sfc_mae_item_build_supp_mask(flocs_ipv6, RTE_DIM(flocs_ipv6), &supp_mask, sizeof(supp_mask)); vtc_flow_be = RTE_BE32(RTE_IPV6_HDR_TC_MASK); memcpy(&supp_mask, &vtc_flow_be, sizeof(vtc_flow_be)); rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, &rte_flow_item_ipv6_mask, sizeof(struct rte_flow_item_ipv6), error); if (rc != 0) return rc; pdata->innermost_ethertype_restriction.value = ethertype_ipv6_be; pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff); if (spec != NULL) { const struct rte_flow_item_ipv6 *item_spec; const struct rte_flow_item_ipv6 *item_mask; item_spec = (const struct rte_flow_item_ipv6 *)spec; item_mask = (const struct rte_flow_item_ipv6 *)mask; pdata->l3_next_proto_value = item_spec->hdr.proto; pdata->l3_next_proto_mask = item_mask->hdr.proto; } else { return 0; } rc = sfc_mae_parse_item(flocs_ipv6, RTE_DIM(flocs_ipv6), spec, mask, ctx_mae, error); if (rc != 0) return rc; memcpy(&vtc_flow_be, spec, sizeof(vtc_flow_be)); vtc_flow = rte_be_to_cpu_32(vtc_flow_be); tc_value = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT; memcpy(&vtc_flow_be, mask, sizeof(vtc_flow_be)); vtc_flow = rte_be_to_cpu_32(vtc_flow_be); tc_mask = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT; rc = efx_mae_match_spec_field_set(ctx_mae->match_spec, fremap[EFX_MAE_FIELD_IP_TOS], sizeof(tc_value), &tc_value, sizeof(tc_mask), &tc_mask); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL, "Failed to process item fields"); } return 0; } static const struct sfc_mae_field_locator flocs_tcp[] = { { EFX_MAE_FIELD_L4_SPORT_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.src_port), offsetof(struct rte_flow_item_tcp, hdr.src_port), }, { EFX_MAE_FIELD_L4_DPORT_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.dst_port), offsetof(struct rte_flow_item_tcp, hdr.dst_port), }, { EFX_MAE_FIELD_TCP_FLAGS_BE, /* * The values have been picked intentionally since the * target MAE field is oversize (16 bit). This mapping * relies on the fact that the MAE field is big-endian. */ RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.data_off) + RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.tcp_flags), offsetof(struct rte_flow_item_tcp, hdr.data_off), }, }; static int sfc_mae_rule_parse_item_tcp(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data; struct rte_flow_item_tcp supp_mask; const uint8_t *spec = NULL; const uint8_t *mask = NULL; int rc; /* * When encountered among outermost items, item TCP is invalid. * Check which match specification is being constructed now. */ if (ctx_mae->match_spec != ctx_mae->match_spec_action) { return rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item, "TCP in outer frame is invalid"); } sfc_mae_item_build_supp_mask(flocs_tcp, RTE_DIM(flocs_tcp), &supp_mask, sizeof(supp_mask)); rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, &rte_flow_item_tcp_mask, sizeof(struct rte_flow_item_tcp), error); if (rc != 0) return rc; pdata->l3_next_proto_restriction_value = IPPROTO_TCP; pdata->l3_next_proto_restriction_mask = 0xff; if (spec == NULL) return 0; return sfc_mae_parse_item(flocs_tcp, RTE_DIM(flocs_tcp), spec, mask, ctx_mae, error); } static const struct sfc_mae_field_locator flocs_udp[] = { { EFX_MAE_FIELD_L4_SPORT_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.src_port), offsetof(struct rte_flow_item_udp, hdr.src_port), }, { EFX_MAE_FIELD_L4_DPORT_BE, RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.dst_port), offsetof(struct rte_flow_item_udp, hdr.dst_port), }, }; static int sfc_mae_rule_parse_item_udp(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data; struct rte_flow_item_udp supp_mask; const uint8_t *spec = NULL; const uint8_t *mask = NULL; int rc; sfc_mae_item_build_supp_mask(flocs_udp, RTE_DIM(flocs_udp), &supp_mask, sizeof(supp_mask)); rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, &rte_flow_item_udp_mask, sizeof(struct rte_flow_item_udp), error); if (rc != 0) return rc; pdata->l3_next_proto_restriction_value = IPPROTO_UDP; pdata->l3_next_proto_restriction_mask = 0xff; if (spec == NULL) return 0; return sfc_mae_parse_item(flocs_udp, RTE_DIM(flocs_udp), spec, mask, ctx_mae, error); } static const struct sfc_mae_field_locator flocs_tunnel[] = { { /* * The size and offset values are relevant * for Geneve and NVGRE, too. */ .size = RTE_SIZEOF_FIELD(struct rte_flow_item_vxlan, vni), .ofst = offsetof(struct rte_flow_item_vxlan, vni), }, }; /* * An auxiliary registry which allows using non-encap. field IDs * directly when building a match specification of type ACTION. * * See sfc_mae_rule_parse_pattern() and sfc_mae_rule_parse_item_tunnel(). */ static const efx_mae_field_id_t field_ids_no_remap[] = { #define FIELD_ID_NO_REMAP(_field) \ [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_##_field FIELD_ID_NO_REMAP(ETHER_TYPE_BE), FIELD_ID_NO_REMAP(ETH_SADDR_BE), FIELD_ID_NO_REMAP(ETH_DADDR_BE), FIELD_ID_NO_REMAP(VLAN0_TCI_BE), FIELD_ID_NO_REMAP(VLAN0_PROTO_BE), FIELD_ID_NO_REMAP(VLAN1_TCI_BE), FIELD_ID_NO_REMAP(VLAN1_PROTO_BE), FIELD_ID_NO_REMAP(SRC_IP4_BE), FIELD_ID_NO_REMAP(DST_IP4_BE), FIELD_ID_NO_REMAP(IP_PROTO), FIELD_ID_NO_REMAP(IP_TOS), FIELD_ID_NO_REMAP(IP_TTL), FIELD_ID_NO_REMAP(SRC_IP6_BE), FIELD_ID_NO_REMAP(DST_IP6_BE), FIELD_ID_NO_REMAP(L4_SPORT_BE), FIELD_ID_NO_REMAP(L4_DPORT_BE), FIELD_ID_NO_REMAP(TCP_FLAGS_BE), #undef FIELD_ID_NO_REMAP }; /* * An auxiliary registry which allows using "ENC" field IDs * when building a match specification of type OUTER. * * See sfc_mae_rule_encap_parse_init(). */ static const efx_mae_field_id_t field_ids_remap_to_encap[] = { #define FIELD_ID_REMAP_TO_ENCAP(_field) \ [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_ENC_##_field FIELD_ID_REMAP_TO_ENCAP(ETHER_TYPE_BE), FIELD_ID_REMAP_TO_ENCAP(ETH_SADDR_BE), FIELD_ID_REMAP_TO_ENCAP(ETH_DADDR_BE), FIELD_ID_REMAP_TO_ENCAP(VLAN0_TCI_BE), FIELD_ID_REMAP_TO_ENCAP(VLAN0_PROTO_BE), FIELD_ID_REMAP_TO_ENCAP(VLAN1_TCI_BE), FIELD_ID_REMAP_TO_ENCAP(VLAN1_PROTO_BE), FIELD_ID_REMAP_TO_ENCAP(SRC_IP4_BE), FIELD_ID_REMAP_TO_ENCAP(DST_IP4_BE), FIELD_ID_REMAP_TO_ENCAP(IP_PROTO), FIELD_ID_REMAP_TO_ENCAP(IP_TOS), FIELD_ID_REMAP_TO_ENCAP(IP_TTL), FIELD_ID_REMAP_TO_ENCAP(SRC_IP6_BE), FIELD_ID_REMAP_TO_ENCAP(DST_IP6_BE), FIELD_ID_REMAP_TO_ENCAP(L4_SPORT_BE), FIELD_ID_REMAP_TO_ENCAP(L4_DPORT_BE), #undef FIELD_ID_REMAP_TO_ENCAP }; static int sfc_mae_rule_parse_item_tunnel(const struct rte_flow_item *item, struct sfc_flow_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae_parse_ctx *ctx_mae = ctx->mae; uint8_t vnet_id_v[sizeof(uint32_t)] = {0}; uint8_t vnet_id_m[sizeof(uint32_t)] = {0}; const struct rte_flow_item_vxlan *vxp; uint8_t supp_mask[sizeof(uint64_t)]; const uint8_t *spec = NULL; const uint8_t *mask = NULL; const void *def_mask; int rc; /* * We're about to start processing inner frame items. * Process pattern data that has been deferred so far * and reset pattern data storage. */ rc = sfc_mae_rule_process_pattern_data(ctx_mae, error); if (rc != 0) return rc; memset(&ctx_mae->pattern_data, 0, sizeof(ctx_mae->pattern_data)); sfc_mae_item_build_supp_mask(flocs_tunnel, RTE_DIM(flocs_tunnel), &supp_mask, sizeof(supp_mask)); /* * This tunnel item was preliminarily detected by * sfc_mae_rule_encap_parse_init(). Default mask * was also picked by that helper. Use it here. */ def_mask = ctx_mae->tunnel_def_mask; rc = sfc_flow_parse_init(item, (const void **)&spec, (const void **)&mask, (const void *)&supp_mask, def_mask, sizeof(def_mask), error); if (rc != 0) return rc; /* * This item and later ones comprise a * match specification of type ACTION. */ ctx_mae->match_spec = ctx_mae->match_spec_action; /* This item and later ones use non-encap. EFX MAE field IDs. */ ctx_mae->field_ids_remap = field_ids_no_remap; if (spec == NULL) return 0; /* * Field EFX_MAE_FIELD_ENC_VNET_ID_BE is a 32-bit one. * Copy 24-bit VNI, which is BE, at offset 1 in it. * The extra byte is 0 both in the mask and in the value. */ vxp = (const struct rte_flow_item_vxlan *)spec; memcpy(vnet_id_v + 1, &vxp->vni, sizeof(vxp->vni)); vxp = (const struct rte_flow_item_vxlan *)mask; memcpy(vnet_id_m + 1, &vxp->vni, sizeof(vxp->vni)); rc = efx_mae_match_spec_field_set(ctx_mae->match_spec, EFX_MAE_FIELD_ENC_VNET_ID_BE, sizeof(vnet_id_v), vnet_id_v, sizeof(vnet_id_m), vnet_id_m); if (rc != 0) { rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, item, "Failed to set VXLAN VNI"); } return rc; } static const struct sfc_flow_item sfc_flow_items[] = { { .type = RTE_FLOW_ITEM_TYPE_PORT_ID, /* * In terms of RTE flow, this item is a META one, * and its position in the pattern is don't care. */ .prev_layer = SFC_FLOW_ITEM_ANY_LAYER, .layer = SFC_FLOW_ITEM_ANY_LAYER, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_port_id, }, { .type = RTE_FLOW_ITEM_TYPE_PHY_PORT, /* * In terms of RTE flow, this item is a META one, * and its position in the pattern is don't care. */ .prev_layer = SFC_FLOW_ITEM_ANY_LAYER, .layer = SFC_FLOW_ITEM_ANY_LAYER, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_phy_port, }, { .type = RTE_FLOW_ITEM_TYPE_PF, /* * In terms of RTE flow, this item is a META one, * and its position in the pattern is don't care. */ .prev_layer = SFC_FLOW_ITEM_ANY_LAYER, .layer = SFC_FLOW_ITEM_ANY_LAYER, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_pf, }, { .type = RTE_FLOW_ITEM_TYPE_VF, /* * In terms of RTE flow, this item is a META one, * and its position in the pattern is don't care. */ .prev_layer = SFC_FLOW_ITEM_ANY_LAYER, .layer = SFC_FLOW_ITEM_ANY_LAYER, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_vf, }, { .type = RTE_FLOW_ITEM_TYPE_ETH, .prev_layer = SFC_FLOW_ITEM_START_LAYER, .layer = SFC_FLOW_ITEM_L2, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_eth, }, { .type = RTE_FLOW_ITEM_TYPE_VLAN, .prev_layer = SFC_FLOW_ITEM_L2, .layer = SFC_FLOW_ITEM_L2, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_vlan, }, { .type = RTE_FLOW_ITEM_TYPE_IPV4, .prev_layer = SFC_FLOW_ITEM_L2, .layer = SFC_FLOW_ITEM_L3, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_ipv4, }, { .type = RTE_FLOW_ITEM_TYPE_IPV6, .prev_layer = SFC_FLOW_ITEM_L2, .layer = SFC_FLOW_ITEM_L3, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_ipv6, }, { .type = RTE_FLOW_ITEM_TYPE_TCP, .prev_layer = SFC_FLOW_ITEM_L3, .layer = SFC_FLOW_ITEM_L4, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_tcp, }, { .type = RTE_FLOW_ITEM_TYPE_UDP, .prev_layer = SFC_FLOW_ITEM_L3, .layer = SFC_FLOW_ITEM_L4, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_udp, }, { .type = RTE_FLOW_ITEM_TYPE_VXLAN, .prev_layer = SFC_FLOW_ITEM_L4, .layer = SFC_FLOW_ITEM_START_LAYER, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_tunnel, }, { .type = RTE_FLOW_ITEM_TYPE_GENEVE, .prev_layer = SFC_FLOW_ITEM_L4, .layer = SFC_FLOW_ITEM_START_LAYER, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_tunnel, }, { .type = RTE_FLOW_ITEM_TYPE_NVGRE, .prev_layer = SFC_FLOW_ITEM_L3, .layer = SFC_FLOW_ITEM_START_LAYER, .ctx_type = SFC_FLOW_PARSE_CTX_MAE, .parse = sfc_mae_rule_parse_item_tunnel, }, }; static int sfc_mae_rule_process_outer(struct sfc_adapter *sa, struct sfc_mae_parse_ctx *ctx, struct sfc_mae_outer_rule **rulep, struct rte_flow_error *error) { struct sfc_mae_outer_rule *rule; int rc; if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE) { *rulep = NULL; return 0; } SFC_ASSERT(ctx->match_spec_outer != NULL); if (!efx_mae_match_spec_is_valid(sa->nic, ctx->match_spec_outer)) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, NULL, "Inconsistent pattern (outer)"); } *rulep = sfc_mae_outer_rule_attach(sa, ctx->match_spec_outer, ctx->encap_type); if (*rulep != NULL) { efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer); } else { rc = sfc_mae_outer_rule_add(sa, ctx->match_spec_outer, ctx->encap_type, rulep); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL, "Failed to process the pattern"); } } /* The spec has now been tracked by the outer rule entry. */ ctx->match_spec_outer = NULL; /* * Depending on whether we reuse an existing outer rule or create a * new one (see above), outer rule ID is either a valid value or * EFX_MAE_RSRC_ID_INVALID. Set it in the action rule match * specification (and the full mask, too) in order to have correct * class comparisons of the new rule with existing ones. * Also, action rule match specification will be validated shortly, * and having the full mask set for outer rule ID indicates that we * will use this field, and support for this field has to be checked. */ rule = *rulep; rc = efx_mae_match_spec_outer_rule_id_set(ctx->match_spec_action, &rule->fw_rsrc.rule_id); if (rc != 0) { sfc_mae_outer_rule_del(sa, *rulep); *rulep = NULL; return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL, "Failed to process the pattern"); } return 0; } static int sfc_mae_rule_encap_parse_init(struct sfc_adapter *sa, const struct rte_flow_item pattern[], struct sfc_mae_parse_ctx *ctx, struct rte_flow_error *error) { struct sfc_mae *mae = &sa->mae; int rc; if (pattern == NULL) { rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_NUM, NULL, "NULL pattern"); return -rte_errno; } for (;;) { switch (pattern->type) { case RTE_FLOW_ITEM_TYPE_VXLAN: ctx->encap_type = EFX_TUNNEL_PROTOCOL_VXLAN; ctx->tunnel_def_mask = &rte_flow_item_vxlan_mask; RTE_BUILD_BUG_ON(sizeof(ctx->tunnel_def_mask) != sizeof(rte_flow_item_vxlan_mask)); break; case RTE_FLOW_ITEM_TYPE_GENEVE: ctx->encap_type = EFX_TUNNEL_PROTOCOL_GENEVE; ctx->tunnel_def_mask = &rte_flow_item_geneve_mask; RTE_BUILD_BUG_ON(sizeof(ctx->tunnel_def_mask) != sizeof(rte_flow_item_geneve_mask)); break; case RTE_FLOW_ITEM_TYPE_NVGRE: ctx->encap_type = EFX_TUNNEL_PROTOCOL_NVGRE; ctx->tunnel_def_mask = &rte_flow_item_nvgre_mask; RTE_BUILD_BUG_ON(sizeof(ctx->tunnel_def_mask) != sizeof(rte_flow_item_nvgre_mask)); break; case RTE_FLOW_ITEM_TYPE_END: break; default: ++pattern; continue; }; break; } if (pattern->type == RTE_FLOW_ITEM_TYPE_END) return 0; if ((mae->encap_types_supported & (1U << ctx->encap_type)) == 0) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, pattern, "Unsupported tunnel item"); } if (ctx->priority >= mae->nb_outer_rule_prios_max) { return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, NULL, "Unsupported priority level"); } rc = efx_mae_match_spec_init(sa->nic, EFX_MAE_RULE_OUTER, ctx->priority, &ctx->match_spec_outer); if (rc != 0) { return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, pattern, "Failed to initialise outer rule match specification"); } /* Outermost items comprise a match specification of type OUTER. */ ctx->match_spec = ctx->match_spec_outer; /* Outermost items use "ENC" EFX MAE field IDs. */ ctx->field_ids_remap = field_ids_remap_to_encap; return 0; } static void sfc_mae_rule_encap_parse_fini(struct sfc_adapter *sa, struct sfc_mae_parse_ctx *ctx) { if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE) return; if (ctx->match_spec_outer != NULL) efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer); } int sfc_mae_rule_parse_pattern(struct sfc_adapter *sa, const struct rte_flow_item pattern[], struct sfc_flow_spec_mae *spec, struct rte_flow_error *error) { struct sfc_mae_parse_ctx ctx_mae; struct sfc_flow_parse_ctx ctx; int rc; memset(&ctx_mae, 0, sizeof(ctx_mae)); ctx_mae.priority = spec->priority; ctx_mae.sa = sa; rc = efx_mae_match_spec_init(sa->nic, EFX_MAE_RULE_ACTION, spec->priority, &ctx_mae.match_spec_action); if (rc != 0) { rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, "Failed to initialise action rule match specification"); goto fail_init_match_spec_action; } /* * As a preliminary setting, assume that there is no encapsulation * in the pattern. That is, pattern items are about to comprise a * match specification of type ACTION and use non-encap. field IDs. * * sfc_mae_rule_encap_parse_init() below may override this. */ ctx_mae.encap_type = EFX_TUNNEL_PROTOCOL_NONE; ctx_mae.match_spec = ctx_mae.match_spec_action; ctx_mae.field_ids_remap = field_ids_no_remap; ctx.type = SFC_FLOW_PARSE_CTX_MAE; ctx.mae = &ctx_mae; rc = sfc_mae_rule_encap_parse_init(sa, pattern, &ctx_mae, error); if (rc != 0) goto fail_encap_parse_init; rc = sfc_flow_parse_pattern(sfc_flow_items, RTE_DIM(sfc_flow_items), pattern, &ctx, error); if (rc != 0) goto fail_parse_pattern; rc = sfc_mae_rule_process_pattern_data(&ctx_mae, error); if (rc != 0) goto fail_process_pattern_data; rc = sfc_mae_rule_process_outer(sa, &ctx_mae, &spec->outer_rule, error); if (rc != 0) goto fail_process_outer; if (!efx_mae_match_spec_is_valid(sa->nic, ctx_mae.match_spec_action)) { rc = rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, NULL, "Inconsistent pattern"); goto fail_validate_match_spec_action; } spec->match_spec = ctx_mae.match_spec_action; return 0; fail_validate_match_spec_action: fail_process_outer: fail_process_pattern_data: fail_parse_pattern: sfc_mae_rule_encap_parse_fini(sa, &ctx_mae); fail_encap_parse_init: efx_mae_match_spec_fini(sa->nic, ctx_mae.match_spec_action); fail_init_match_spec_action: return rc; } /* * An action supported by MAE may correspond to a bundle of RTE flow actions, * in example, VLAN_PUSH = OF_PUSH_VLAN + OF_VLAN_SET_VID + OF_VLAN_SET_PCP. * That is, related RTE flow actions need to be tracked as parts of a whole * so that they can be combined into a single action and submitted to MAE * representation of a given rule's action set. * * Each RTE flow action provided by an application gets classified as * one belonging to some bundle type. If an action is not supposed to * belong to any bundle, or if this action is END, it is described as * one belonging to a dummy bundle of type EMPTY. * * A currently tracked bundle will be submitted if a repeating * action or an action of different bundle type follows. */ enum sfc_mae_actions_bundle_type { SFC_MAE_ACTIONS_BUNDLE_EMPTY = 0, SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH, }; struct sfc_mae_actions_bundle { enum sfc_mae_actions_bundle_type type; /* Indicates actions already tracked by the current bundle */ uint64_t actions_mask; /* Parameters used by SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH */ rte_be16_t vlan_push_tpid; rte_be16_t vlan_push_tci; }; /* * Combine configuration of RTE flow actions tracked by the bundle into a * single action and submit the result to MAE action set specification. * Do nothing in the case of dummy action bundle. */ static int sfc_mae_actions_bundle_submit(const struct sfc_mae_actions_bundle *bundle, efx_mae_actions_t *spec) { int rc = 0; switch (bundle->type) { case SFC_MAE_ACTIONS_BUNDLE_EMPTY: break; case SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH: rc = efx_mae_action_set_populate_vlan_push( spec, bundle->vlan_push_tpid, bundle->vlan_push_tci); break; default: SFC_ASSERT(B_FALSE); break; } return rc; } /* * Given the type of the next RTE flow action in the line, decide * whether a new bundle is about to start, and, if this is the case, * submit and reset the current bundle. */ static int sfc_mae_actions_bundle_sync(const struct rte_flow_action *action, struct sfc_mae_actions_bundle *bundle, efx_mae_actions_t *spec, struct rte_flow_error *error) { enum sfc_mae_actions_bundle_type bundle_type_new; int rc; switch (action->type) { case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN: case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID: case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP: bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH; break; default: /* * Self-sufficient actions, including END, are handled in this * case. No checks for unsupported actions are needed here * because parsing doesn't occur at this point. */ bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_EMPTY; break; } if (bundle_type_new != bundle->type || (bundle->actions_mask & (1ULL << action->type)) != 0) { rc = sfc_mae_actions_bundle_submit(bundle, spec); if (rc != 0) goto fail_submit; memset(bundle, 0, sizeof(*bundle)); } bundle->type = bundle_type_new; return 0; fail_submit: return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION, NULL, "Failed to request the (group of) action(s)"); } static void sfc_mae_rule_parse_action_of_push_vlan( const struct rte_flow_action_of_push_vlan *conf, struct sfc_mae_actions_bundle *bundle) { bundle->vlan_push_tpid = conf->ethertype; } static void sfc_mae_rule_parse_action_of_set_vlan_vid( const struct rte_flow_action_of_set_vlan_vid *conf, struct sfc_mae_actions_bundle *bundle) { bundle->vlan_push_tci |= (conf->vlan_vid & rte_cpu_to_be_16(RTE_LEN2MASK(12, uint16_t))); } static void sfc_mae_rule_parse_action_of_set_vlan_pcp( const struct rte_flow_action_of_set_vlan_pcp *conf, struct sfc_mae_actions_bundle *bundle) { uint16_t vlan_tci_pcp = (uint16_t)(conf->vlan_pcp & RTE_LEN2MASK(3, uint8_t)) << 13; bundle->vlan_push_tci |= rte_cpu_to_be_16(vlan_tci_pcp); } static int sfc_mae_rule_parse_action_mark(const struct rte_flow_action_mark *conf, efx_mae_actions_t *spec) { return efx_mae_action_set_populate_mark(spec, conf->id); } static int sfc_mae_rule_parse_action_phy_port(struct sfc_adapter *sa, const struct rte_flow_action_phy_port *conf, efx_mae_actions_t *spec) { efx_mport_sel_t mport; uint32_t phy_port; int rc; if (conf->original != 0) phy_port = efx_nic_cfg_get(sa->nic)->enc_assigned_port; else phy_port = conf->index; rc = efx_mae_mport_by_phy_port(phy_port, &mport); if (rc != 0) return rc; return efx_mae_action_set_populate_deliver(spec, &mport); } static int sfc_mae_rule_parse_action_pf_vf(struct sfc_adapter *sa, const struct rte_flow_action_vf *vf_conf, efx_mae_actions_t *spec) { const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic); efx_mport_sel_t mport; uint32_t vf; int rc; if (vf_conf == NULL) vf = EFX_PCI_VF_INVALID; else if (vf_conf->original != 0) vf = encp->enc_vf; else vf = vf_conf->id; rc = efx_mae_mport_by_pcie_function(encp->enc_pf, vf, &mport); if (rc != 0) return rc; return efx_mae_action_set_populate_deliver(spec, &mport); } static int sfc_mae_rule_parse_action_port_id(struct sfc_adapter *sa, const struct rte_flow_action_port_id *conf, efx_mae_actions_t *spec) { struct sfc_adapter_shared * const sas = sfc_sa2shared(sa); struct sfc_mae *mae = &sa->mae; efx_mport_sel_t mport; uint16_t port_id; int rc; port_id = (conf->original != 0) ? sas->port_id : conf->id; rc = sfc_mae_switch_port_by_ethdev(mae->switch_domain_id, port_id, &mport); if (rc != 0) return rc; return efx_mae_action_set_populate_deliver(spec, &mport); } static int sfc_mae_rule_parse_action(struct sfc_adapter *sa, const struct rte_flow_action *action, struct sfc_mae_actions_bundle *bundle, efx_mae_actions_t *spec, struct rte_flow_error *error) { int rc = 0; switch (action->type) { case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_POP_VLAN, bundle->actions_mask); rc = efx_mae_action_set_populate_vlan_pop(spec); break; case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN, bundle->actions_mask); sfc_mae_rule_parse_action_of_push_vlan(action->conf, bundle); break; case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID, bundle->actions_mask); sfc_mae_rule_parse_action_of_set_vlan_vid(action->conf, bundle); break; case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP, bundle->actions_mask); sfc_mae_rule_parse_action_of_set_vlan_pcp(action->conf, bundle); break; case RTE_FLOW_ACTION_TYPE_FLAG: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_FLAG, bundle->actions_mask); rc = efx_mae_action_set_populate_flag(spec); break; case RTE_FLOW_ACTION_TYPE_MARK: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_MARK, bundle->actions_mask); rc = sfc_mae_rule_parse_action_mark(action->conf, spec); break; case RTE_FLOW_ACTION_TYPE_PHY_PORT: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PHY_PORT, bundle->actions_mask); rc = sfc_mae_rule_parse_action_phy_port(sa, action->conf, spec); break; case RTE_FLOW_ACTION_TYPE_PF: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PF, bundle->actions_mask); rc = sfc_mae_rule_parse_action_pf_vf(sa, NULL, spec); break; case RTE_FLOW_ACTION_TYPE_VF: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VF, bundle->actions_mask); rc = sfc_mae_rule_parse_action_pf_vf(sa, action->conf, spec); break; case RTE_FLOW_ACTION_TYPE_PORT_ID: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PORT_ID, bundle->actions_mask); rc = sfc_mae_rule_parse_action_port_id(sa, action->conf, spec); break; case RTE_FLOW_ACTION_TYPE_DROP: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_DROP, bundle->actions_mask); rc = efx_mae_action_set_populate_drop(spec); break; default: return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, NULL, "Unsupported action"); } if (rc != 0) { rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION, NULL, "Failed to request the action"); } else { bundle->actions_mask |= (1ULL << action->type); } return rc; } int sfc_mae_rule_parse_actions(struct sfc_adapter *sa, const struct rte_flow_action actions[], struct sfc_mae_action_set **action_setp, struct rte_flow_error *error) { struct sfc_mae_actions_bundle bundle = {0}; const struct rte_flow_action *action; efx_mae_actions_t *spec; int rc; if (actions == NULL) { return rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_NUM, NULL, "NULL actions"); } rc = efx_mae_action_set_spec_init(sa->nic, &spec); if (rc != 0) goto fail_action_set_spec_init; for (action = actions; action->type != RTE_FLOW_ACTION_TYPE_END; ++action) { rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error); if (rc != 0) goto fail_rule_parse_action; rc = sfc_mae_rule_parse_action(sa, action, &bundle, spec, error); if (rc != 0) goto fail_rule_parse_action; } rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error); if (rc != 0) goto fail_rule_parse_action; *action_setp = sfc_mae_action_set_attach(sa, spec); if (*action_setp != NULL) { efx_mae_action_set_spec_fini(sa->nic, spec); return 0; } rc = sfc_mae_action_set_add(sa, spec, action_setp); if (rc != 0) goto fail_action_set_add; return 0; fail_action_set_add: fail_rule_parse_action: efx_mae_action_set_spec_fini(sa->nic, spec); fail_action_set_spec_init: if (rc > 0) { rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, "Failed to process the action"); } return rc; } static bool sfc_mae_rules_class_cmp(struct sfc_adapter *sa, const efx_mae_match_spec_t *left, const efx_mae_match_spec_t *right) { bool have_same_class; int rc; rc = efx_mae_match_specs_class_cmp(sa->nic, left, right, &have_same_class); return (rc == 0) ? have_same_class : false; } static int sfc_mae_outer_rule_class_verify(struct sfc_adapter *sa, struct sfc_mae_outer_rule *rule) { struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc; struct sfc_mae_outer_rule *entry; struct sfc_mae *mae = &sa->mae; if (fw_rsrc->rule_id.id != EFX_MAE_RSRC_ID_INVALID) { /* An active rule is reused. It's class is wittingly valid. */ return 0; } TAILQ_FOREACH_REVERSE(entry, &mae->outer_rules, sfc_mae_outer_rules, entries) { const efx_mae_match_spec_t *left = entry->match_spec; const efx_mae_match_spec_t *right = rule->match_spec; if (entry == rule) continue; if (sfc_mae_rules_class_cmp(sa, left, right)) return 0; } sfc_info(sa, "for now, the HW doesn't support rule validation, and HW " "support for outer frame pattern items is not guaranteed; " "other than that, the items are valid from SW standpoint"); return 0; } static int sfc_mae_action_rule_class_verify(struct sfc_adapter *sa, struct sfc_flow_spec_mae *spec) { const struct rte_flow *entry; TAILQ_FOREACH_REVERSE(entry, &sa->flow_list, sfc_flow_list, entries) { const struct sfc_flow_spec *entry_spec = &entry->spec; const struct sfc_flow_spec_mae *es_mae = &entry_spec->mae; const efx_mae_match_spec_t *left = es_mae->match_spec; const efx_mae_match_spec_t *right = spec->match_spec; switch (entry_spec->type) { case SFC_FLOW_SPEC_FILTER: /* Ignore VNIC-level flows */ break; case SFC_FLOW_SPEC_MAE: if (sfc_mae_rules_class_cmp(sa, left, right)) return 0; break; default: SFC_ASSERT(false); } } sfc_info(sa, "for now, the HW doesn't support rule validation, and HW " "support for inner frame pattern items is not guaranteed; " "other than that, the items are valid from SW standpoint"); return 0; } /** * Confirm that a given flow can be accepted by the FW. * * @param sa * Software adapter context * @param flow * Flow to be verified * @return * Zero on success and non-zero in the case of error. * A special value of EAGAIN indicates that the adapter is * not in started state. This state is compulsory because * it only makes sense to compare the rule class of the flow * being validated with classes of the active rules. * Such classes are wittingly supported by the FW. */ int sfc_mae_flow_verify(struct sfc_adapter *sa, struct rte_flow *flow) { struct sfc_flow_spec *spec = &flow->spec; struct sfc_flow_spec_mae *spec_mae = &spec->mae; struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule; int rc; SFC_ASSERT(sfc_adapter_is_locked(sa)); if (sa->state != SFC_ADAPTER_STARTED) return EAGAIN; if (outer_rule != NULL) { rc = sfc_mae_outer_rule_class_verify(sa, outer_rule); if (rc != 0) return rc; } return sfc_mae_action_rule_class_verify(sa, spec_mae); } int sfc_mae_flow_insert(struct sfc_adapter *sa, struct rte_flow *flow) { struct sfc_flow_spec *spec = &flow->spec; struct sfc_flow_spec_mae *spec_mae = &spec->mae; struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule; struct sfc_mae_action_set *action_set = spec_mae->action_set; struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc; int rc; SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(action_set != NULL); if (outer_rule != NULL) { rc = sfc_mae_outer_rule_enable(sa, outer_rule, spec_mae->match_spec); if (rc != 0) goto fail_outer_rule_enable; } rc = sfc_mae_action_set_enable(sa, action_set); if (rc != 0) goto fail_action_set_enable; rc = efx_mae_action_rule_insert(sa->nic, spec_mae->match_spec, NULL, &fw_rsrc->aset_id, &spec_mae->rule_id); if (rc != 0) goto fail_action_rule_insert; return 0; fail_action_rule_insert: (void)sfc_mae_action_set_disable(sa, action_set); fail_action_set_enable: if (outer_rule != NULL) (void)sfc_mae_outer_rule_disable(sa, outer_rule); fail_outer_rule_enable: return rc; } int sfc_mae_flow_remove(struct sfc_adapter *sa, struct rte_flow *flow) { struct sfc_flow_spec *spec = &flow->spec; struct sfc_flow_spec_mae *spec_mae = &spec->mae; struct sfc_mae_action_set *action_set = spec_mae->action_set; struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule; int rc; SFC_ASSERT(spec_mae->rule_id.id != EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(action_set != NULL); rc = efx_mae_action_rule_remove(sa->nic, &spec_mae->rule_id); if (rc != 0) return rc; spec_mae->rule_id.id = EFX_MAE_RSRC_ID_INVALID; rc = sfc_mae_action_set_disable(sa, action_set); if (rc != 0) { sfc_err(sa, "failed to disable the action set (rc = %d)", rc); /* Despite the error, proceed with outer rule removal. */ } if (outer_rule != NULL) return sfc_mae_outer_rule_disable(sa, outer_rule); return 0; }