X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fsfc%2Fsfc_mae.c;h=a2c0aa14362f0358f35485768d8b8911975426c8;hb=35d4f17b3d301469685442ebcc2108a5bd5e5bbe;hp=7e4397762b6146a3c91e5ea5bbec63fa832873c3;hpb=05e8b05d08d9f764990217c44dc72c2b6e2c5867;p=dpdk.git diff --git a/drivers/net/sfc/sfc_mae.c b/drivers/net/sfc/sfc_mae.c index 7e4397762b..a2c0aa1436 100644 --- a/drivers/net/sfc/sfc_mae.c +++ b/drivers/net/sfc/sfc_mae.c @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: BSD-3-Clause * - * Copyright(c) 2019-2020 Xilinx, Inc. + * Copyright(c) 2019-2021 Xilinx, Inc. * Copyright(c) 2019 Solarflare Communications Inc. * * This software was jointly developed between OKTET Labs (under contract @@ -9,18 +9,35 @@ #include +#include #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; + struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh; efx_mae_limits_t limits; int rc; @@ -41,13 +58,54 @@ sfc_mae_attach(struct sfc_adapter *sa) 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; + + sfc_log_init(sa, "allocate encap. header bounce buffer"); + bounce_eh->buf_size = limits.eml_encap_header_size_limit; + bounce_eh->buf = rte_malloc("sfc_mae_bounce_eh", + bounce_eh->buf_size, 0); + if (bounce_eh->buf == NULL) + goto fail_mae_alloc_bounce_eh; + 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->encap_headers); + TAILQ_INIT(&mae->action_sets); sfc_log_init(sa, "done"); return 0; +fail_mae_alloc_bounce_eh: +fail_mae_assign_switch_port: +fail_mae_assign_switch_domain: +fail_mae_assign_entity_mport: fail_mae_get_limits: efx_mae_fini(sa->nic); @@ -71,11 +129,509 @@ sfc_mae_detach(struct sfc_adapter *sa) if (status_prev != SFC_MAE_STATUS_SUPPORTED) return; + rte_free(mae->bounce_eh.buf); + 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) { + sfc_dbg(sa, "attaching to outer_rule=%p", rule); + ++(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; + + sfc_dbg(sa, "added outer_rule=%p", 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; + + if (rule->fw_rsrc.rule_id.id != EFX_MAE_RSRC_ID_INVALID || + rule->fw_rsrc.refcnt != 0) { + sfc_err(sa, "deleting outer_rule=%p abandons its FW resource: OR_ID=0x%08x, refcnt=%u", + rule, rule->fw_rsrc.rule_id.id, rule->fw_rsrc.refcnt); + } + + efx_mae_match_spec_fini(sa->nic, rule->match_spec); + + TAILQ_REMOVE(&mae->outer_rules, rule, entries); + rte_free(rule); + + sfc_dbg(sa, "deleted outer_rule=%p", 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) { + sfc_err(sa, "failed to enable outer_rule=%p: %s", + rule, strerror(rc)); + 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); + fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID; + } + + sfc_err(sa, "can't match on outer rule ID: %s", strerror(rc)); + + return rc; + } + + if (fw_rsrc->refcnt == 0) { + sfc_dbg(sa, "enabled outer_rule=%p: OR_ID=0x%08x", + rule, fw_rsrc->rule_id.id); + } + + ++(fw_rsrc->refcnt); + + return 0; +} + +static void +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)); + + if (fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID || + fw_rsrc->refcnt == 0) { + sfc_err(sa, "failed to disable outer_rule=%p: already disabled; OR_ID=0x%08x, refcnt=%u", + rule, fw_rsrc->rule_id.id, fw_rsrc->refcnt); + return; + } + + if (fw_rsrc->refcnt == 1) { + rc = efx_mae_outer_rule_remove(sa->nic, &fw_rsrc->rule_id); + if (rc == 0) { + sfc_dbg(sa, "disabled outer_rule=%p with OR_ID=0x%08x", + rule, fw_rsrc->rule_id.id); + } else { + sfc_err(sa, "failed to disable outer_rule=%p with OR_ID=0x%08x: %s", + rule, fw_rsrc->rule_id.id, strerror(rc)); + } + fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID; + } + + --(fw_rsrc->refcnt); +} + +static struct sfc_mae_encap_header * +sfc_mae_encap_header_attach(struct sfc_adapter *sa, + const struct sfc_mae_bounce_eh *bounce_eh) +{ + struct sfc_mae_encap_header *encap_header; + struct sfc_mae *mae = &sa->mae; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + TAILQ_FOREACH(encap_header, &mae->encap_headers, entries) { + if (encap_header->size == bounce_eh->size && + memcmp(encap_header->buf, bounce_eh->buf, + bounce_eh->size) == 0) { + sfc_dbg(sa, "attaching to encap_header=%p", + encap_header); + ++(encap_header->refcnt); + return encap_header; + } + } + + return NULL; +} + +static int +sfc_mae_encap_header_add(struct sfc_adapter *sa, + const struct sfc_mae_bounce_eh *bounce_eh, + struct sfc_mae_encap_header **encap_headerp) +{ + struct sfc_mae_encap_header *encap_header; + struct sfc_mae *mae = &sa->mae; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + encap_header = rte_zmalloc("sfc_mae_encap_header", + sizeof(*encap_header), 0); + if (encap_header == NULL) + return ENOMEM; + + encap_header->size = bounce_eh->size; + + encap_header->buf = rte_malloc("sfc_mae_encap_header_buf", + encap_header->size, 0); + if (encap_header->buf == NULL) { + rte_free(encap_header); + return ENOMEM; + } + + rte_memcpy(encap_header->buf, bounce_eh->buf, bounce_eh->size); + + encap_header->refcnt = 1; + encap_header->type = bounce_eh->type; + encap_header->fw_rsrc.eh_id.id = EFX_MAE_RSRC_ID_INVALID; + + TAILQ_INSERT_TAIL(&mae->encap_headers, encap_header, entries); + + *encap_headerp = encap_header; + + sfc_dbg(sa, "added encap_header=%p", encap_header); + + return 0; +} + +static void +sfc_mae_encap_header_del(struct sfc_adapter *sa, + struct sfc_mae_encap_header *encap_header) +{ + struct sfc_mae *mae = &sa->mae; + + if (encap_header == NULL) + return; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + SFC_ASSERT(encap_header->refcnt != 0); + + --(encap_header->refcnt); + + if (encap_header->refcnt != 0) + return; + + if (encap_header->fw_rsrc.eh_id.id != EFX_MAE_RSRC_ID_INVALID || + encap_header->fw_rsrc.refcnt != 0) { + sfc_err(sa, "deleting encap_header=%p abandons its FW resource: EH_ID=0x%08x, refcnt=%u", + encap_header, encap_header->fw_rsrc.eh_id.id, + encap_header->fw_rsrc.refcnt); + } + + TAILQ_REMOVE(&mae->encap_headers, encap_header, entries); + rte_free(encap_header->buf); + rte_free(encap_header); + + sfc_dbg(sa, "deleted encap_header=%p", encap_header); +} + +static int +sfc_mae_encap_header_enable(struct sfc_adapter *sa, + struct sfc_mae_encap_header *encap_header, + efx_mae_actions_t *action_set_spec) +{ + struct sfc_mae_fw_rsrc *fw_rsrc; + int rc; + + if (encap_header == NULL) + return 0; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + fw_rsrc = &encap_header->fw_rsrc; + + if (fw_rsrc->refcnt == 0) { + SFC_ASSERT(fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID); + SFC_ASSERT(encap_header->buf != NULL); + SFC_ASSERT(encap_header->size != 0); + + rc = efx_mae_encap_header_alloc(sa->nic, encap_header->type, + encap_header->buf, + encap_header->size, + &fw_rsrc->eh_id); + if (rc != 0) { + sfc_err(sa, "failed to enable encap_header=%p: %s", + encap_header, strerror(rc)); + return rc; + } + } + + rc = efx_mae_action_set_fill_in_eh_id(action_set_spec, + &fw_rsrc->eh_id); + if (rc != 0) { + if (fw_rsrc->refcnt == 0) { + (void)efx_mae_encap_header_free(sa->nic, + &fw_rsrc->eh_id); + fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID; + } + + sfc_err(sa, "can't fill in encap. header ID: %s", strerror(rc)); + + return rc; + } + + if (fw_rsrc->refcnt == 0) { + sfc_dbg(sa, "enabled encap_header=%p: EH_ID=0x%08x", + encap_header, fw_rsrc->eh_id.id); + } + + ++(fw_rsrc->refcnt); + + return 0; +} + +static void +sfc_mae_encap_header_disable(struct sfc_adapter *sa, + struct sfc_mae_encap_header *encap_header) +{ + struct sfc_mae_fw_rsrc *fw_rsrc; + int rc; + + if (encap_header == NULL) + return; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + fw_rsrc = &encap_header->fw_rsrc; + + if (fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID || + fw_rsrc->refcnt == 0) { + sfc_err(sa, "failed to disable encap_header=%p: already disabled; EH_ID=0x%08x, refcnt=%u", + encap_header, fw_rsrc->eh_id.id, fw_rsrc->refcnt); + return; + } + + if (fw_rsrc->refcnt == 1) { + rc = efx_mae_encap_header_free(sa->nic, &fw_rsrc->eh_id); + if (rc == 0) { + sfc_dbg(sa, "disabled encap_header=%p with EH_ID=0x%08x", + encap_header, fw_rsrc->eh_id.id); + } else { + sfc_err(sa, "failed to disable encap_header=%p with EH_ID=0x%08x: %s", + encap_header, fw_rsrc->eh_id.id, strerror(rc)); + } + fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID; + } + + --(fw_rsrc->refcnt); +} + +static struct sfc_mae_action_set * +sfc_mae_action_set_attach(struct sfc_adapter *sa, + const struct sfc_mae_encap_header *encap_header, + 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 (action_set->encap_header == encap_header && + efx_mae_action_set_specs_equal(action_set->spec, spec)) { + sfc_dbg(sa, "attaching to action_set=%p", action_set); + ++(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_encap_header *encap_header, + 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->encap_header = encap_header; + + 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; + + sfc_dbg(sa, "added action_set=%p", 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; + + if (action_set->fw_rsrc.aset_id.id != EFX_MAE_RSRC_ID_INVALID || + action_set->fw_rsrc.refcnt != 0) { + sfc_err(sa, "deleting action_set=%p abandons its FW resource: AS_ID=0x%08x, refcnt=%u", + action_set, action_set->fw_rsrc.aset_id.id, + action_set->fw_rsrc.refcnt); + } + + efx_mae_action_set_spec_fini(sa->nic, action_set->spec); + sfc_mae_encap_header_del(sa, action_set->encap_header); + TAILQ_REMOVE(&mae->action_sets, action_set, entries); + rte_free(action_set); + + sfc_dbg(sa, "deleted action_set=%p", action_set); +} + +static int +sfc_mae_action_set_enable(struct sfc_adapter *sa, + struct sfc_mae_action_set *action_set) +{ + struct sfc_mae_encap_header *encap_header = action_set->encap_header; + 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 = sfc_mae_encap_header_enable(sa, encap_header, + action_set->spec); + if (rc != 0) + return rc; + + rc = efx_mae_action_set_alloc(sa->nic, action_set->spec, + &fw_rsrc->aset_id); + if (rc != 0) { + sfc_mae_encap_header_disable(sa, encap_header); + + sfc_err(sa, "failed to enable action_set=%p: %s", + action_set, strerror(rc)); + + return rc; + } + + sfc_dbg(sa, "enabled action_set=%p: AS_ID=0x%08x", + action_set, fw_rsrc->aset_id.id); + } + + ++(fw_rsrc->refcnt); + + return 0; +} + +static void +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)); + + if (fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID || + fw_rsrc->refcnt == 0) { + sfc_err(sa, "failed to disable action_set=%p: already disabled; AS_ID=0x%08x, refcnt=%u", + action_set, fw_rsrc->aset_id.id, fw_rsrc->refcnt); + return; + } + + if (fw_rsrc->refcnt == 1) { + rc = efx_mae_action_set_free(sa->nic, &fw_rsrc->aset_id); + if (rc == 0) { + sfc_dbg(sa, "disabled action_set=%p with AS_ID=0x%08x", + action_set, fw_rsrc->aset_id.id); + } else { + sfc_err(sa, "failed to disable action_set=%p with AS_ID=0x%08x: %s", + action_set, fw_rsrc->aset_id.id, strerror(rc)); + } + fw_rsrc->aset_id.id = EFX_MAE_RSRC_ID_INVALID; + + sfc_mae_encap_header_disable(sa, action_set->encap_header); + } + + --(fw_rsrc->refcnt); +} + void sfc_mae_flow_cleanup(struct sfc_adapter *sa, struct rte_flow *flow) @@ -93,58 +649,2319 @@ sfc_mae_flow_cleanup(struct sfc_adapter *sa, 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 const struct sfc_flow_item sfc_flow_items[] = { -}; - -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) +static int +sfc_mae_set_ethertypes(struct sfc_mae_parse_ctx *ctx) { - struct sfc_mae_parse_ctx ctx_mae; - struct sfc_flow_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; - memset(&ctx_mae, 0, sizeof(ctx_mae)); + /* + * 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; - 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; + /* + * 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; } - ctx.type = SFC_FLOW_PARSE_CTX_MAE; - ctx.mae = &ctx_mae; + return 0; +} - rc = sfc_flow_parse_pattern(sfc_flow_items, RTE_DIM(sfc_flow_items), - pattern, &ctx, error); - if (rc != 0) - goto fail_parse_pattern; +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), - 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; + /* 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; } - spec->match_spec = ctx_mae.match_spec_action; + /* + * 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); - return 0; + for (ethertype_idx = 0; + ethertype_idx < pdata->nb_vlan_tags; ++ethertype_idx) { + unsigned int tpid_idx; -fail_validate_match_spec_action: -fail_parse_pattern: - efx_mae_match_spec_fini(sa->nic, ctx_mae.match_spec_action); + /* Exact match is supported only. */ + if (ethertypes[ethertype_idx].mask != RTE_BE16(0xffff)) { + rc = EINVAL; + goto fail; + } -fail_init_match_spec_action: + 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; + 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. + */ + rc = sfc_flow_parse_init(item, + (const void **)&spec, (const void **)&mask, + (const void *)&supp_mask, + ctx_mae->tunnel_def_mask, + ctx_mae->tunnel_def_mask_size, 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; + ctx->tunnel_def_mask_size = + 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; + ctx->tunnel_def_mask_size = + 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; + ctx->tunnel_def_mask_size = + 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); +} + +struct sfc_mae_parsed_item { + const struct rte_flow_item *item; + size_t proto_header_ofst; + size_t proto_header_size; +}; + +/* + * For each 16-bit word of the given header, override + * bits enforced by the corresponding 16-bit mask. + */ +static void +sfc_mae_header_force_item_masks(uint8_t *header_buf, + const struct sfc_mae_parsed_item *parsed_items, + unsigned int nb_parsed_items) +{ + unsigned int item_idx; + + for (item_idx = 0; item_idx < nb_parsed_items; ++item_idx) { + const struct sfc_mae_parsed_item *parsed_item; + const struct rte_flow_item *item; + size_t proto_header_size; + size_t ofst; + + parsed_item = &parsed_items[item_idx]; + proto_header_size = parsed_item->proto_header_size; + item = parsed_item->item; + + for (ofst = 0; ofst < proto_header_size; + ofst += sizeof(rte_be16_t)) { + rte_be16_t *wp = RTE_PTR_ADD(header_buf, ofst); + const rte_be16_t *w_maskp; + const rte_be16_t *w_specp; + + w_maskp = RTE_PTR_ADD(item->mask, ofst); + w_specp = RTE_PTR_ADD(item->spec, ofst); + + *wp &= ~(*w_maskp); + *wp |= (*w_specp & *w_maskp); + } + + header_buf += proto_header_size; + } +} + +#define SFC_IPV4_TTL_DEF 0x40 +#define SFC_IPV6_VTC_FLOW_DEF 0x60000000 +#define SFC_IPV6_HOP_LIMITS_DEF 0xff +#define SFC_VXLAN_FLAGS_DEF 0x08000000 + +static int +sfc_mae_rule_parse_action_vxlan_encap( + struct sfc_mae *mae, + const struct rte_flow_action_vxlan_encap *conf, + efx_mae_actions_t *spec, + struct rte_flow_error *error) +{ + struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh; + struct rte_flow_item *pattern = conf->definition; + uint8_t *buf = bounce_eh->buf; + + /* This array will keep track of non-VOID pattern items. */ + struct sfc_mae_parsed_item parsed_items[1 /* Ethernet */ + + 2 /* VLAN tags */ + + 1 /* IPv4 or IPv6 */ + + 1 /* UDP */ + + 1 /* VXLAN */]; + unsigned int nb_parsed_items = 0; + + size_t eth_ethertype_ofst = offsetof(struct rte_ether_hdr, ether_type); + uint8_t dummy_buf[RTE_MAX(sizeof(struct rte_ipv4_hdr), + sizeof(struct rte_ipv6_hdr))]; + struct rte_ipv4_hdr *ipv4 = (void *)dummy_buf; + struct rte_ipv6_hdr *ipv6 = (void *)dummy_buf; + struct rte_vxlan_hdr *vxlan = NULL; + struct rte_udp_hdr *udp = NULL; + unsigned int nb_vlan_tags = 0; + size_t next_proto_ofst = 0; + size_t ethertype_ofst = 0; + uint64_t exp_items; + + if (pattern == NULL) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "The encap. header definition is NULL"); + } + + bounce_eh->type = EFX_TUNNEL_PROTOCOL_VXLAN; + bounce_eh->size = 0; + + /* + * Process pattern items and remember non-VOID ones. + * Defer applying masks until after the complete header + * has been built from the pattern items. + */ + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_ETH); + + for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; ++pattern) { + struct sfc_mae_parsed_item *parsed_item; + const uint64_t exp_items_extra_vlan[] = { + RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN), 0 + }; + size_t proto_header_size; + rte_be16_t *ethertypep; + uint8_t *next_protop; + uint8_t *buf_cur; + + if (pattern->spec == NULL) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "NULL item spec in the encap. header"); + } + + if (pattern->mask == NULL) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "NULL item mask in the encap. header"); + } + + if (pattern->last != NULL) { + /* This is not a match pattern, so disallow range. */ + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Range item in the encap. header"); + } + + if (pattern->type == RTE_FLOW_ITEM_TYPE_VOID) { + /* Handle VOID separately, for clarity. */ + continue; + } + + if ((exp_items & RTE_BIT64(pattern->type)) == 0) { + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Unexpected item in the encap. header"); + } + + parsed_item = &parsed_items[nb_parsed_items]; + buf_cur = buf + bounce_eh->size; + + switch (pattern->type) { + case RTE_FLOW_ITEM_TYPE_ETH: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_ETH, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_eth, + hdr) != 0); + + proto_header_size = sizeof(struct rte_ether_hdr); + + ethertype_ofst = eth_ethertype_ofst; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN) | + RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) | + RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6); + break; + case RTE_FLOW_ITEM_TYPE_VLAN: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VLAN, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vlan, + hdr) != 0); + + proto_header_size = sizeof(struct rte_vlan_hdr); + + ethertypep = RTE_PTR_ADD(buf, eth_ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_QINQ); + + ethertypep = RTE_PTR_ADD(buf, ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_VLAN); + + ethertype_ofst = + bounce_eh->size + + offsetof(struct rte_vlan_hdr, eth_proto); + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) | + RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6); + exp_items |= exp_items_extra_vlan[nb_vlan_tags]; + + ++nb_vlan_tags; + break; + case RTE_FLOW_ITEM_TYPE_IPV4: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV4, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv4, + hdr) != 0); + + proto_header_size = sizeof(struct rte_ipv4_hdr); + + ethertypep = RTE_PTR_ADD(buf, ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV4); + + next_proto_ofst = + bounce_eh->size + + offsetof(struct rte_ipv4_hdr, next_proto_id); + + ipv4 = (struct rte_ipv4_hdr *)buf_cur; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP); + break; + case RTE_FLOW_ITEM_TYPE_IPV6: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV6, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv6, + hdr) != 0); + + proto_header_size = sizeof(struct rte_ipv6_hdr); + + ethertypep = RTE_PTR_ADD(buf, ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV6); + + next_proto_ofst = bounce_eh->size + + offsetof(struct rte_ipv6_hdr, proto); + + ipv6 = (struct rte_ipv6_hdr *)buf_cur; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP); + break; + case RTE_FLOW_ITEM_TYPE_UDP: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_UDP, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_udp, + hdr) != 0); + + proto_header_size = sizeof(struct rte_udp_hdr); + + next_protop = RTE_PTR_ADD(buf, next_proto_ofst); + *next_protop = IPPROTO_UDP; + + udp = (struct rte_udp_hdr *)buf_cur; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VXLAN); + break; + case RTE_FLOW_ITEM_TYPE_VXLAN: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VXLAN, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vxlan, + hdr) != 0); + + proto_header_size = sizeof(struct rte_vxlan_hdr); + + vxlan = (struct rte_vxlan_hdr *)buf_cur; + + udp->dst_port = RTE_BE16(RTE_VXLAN_DEFAULT_PORT); + udp->dgram_len = RTE_BE16(sizeof(*udp) + + sizeof(*vxlan)); + udp->dgram_cksum = 0; + + exp_items = 0; + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Unknown item in the encap. header"); + } + + if (bounce_eh->size + proto_header_size > bounce_eh->buf_size) { + return rte_flow_error_set(error, E2BIG, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "The encap. header is too big"); + } + + if ((proto_header_size & 1) != 0) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Odd layer size in the encap. header"); + } + + rte_memcpy(buf_cur, pattern->spec, proto_header_size); + bounce_eh->size += proto_header_size; + + parsed_item->item = pattern; + parsed_item->proto_header_size = proto_header_size; + ++nb_parsed_items; + } + + if (exp_items != 0) { + /* Parsing item VXLAN would have reset exp_items to 0. */ + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "No item VXLAN in the encap. header"); + } + + /* One of the pointers (ipv4, ipv6) refers to a dummy area. */ + ipv4->version_ihl = RTE_IPV4_VHL_DEF; + ipv4->time_to_live = SFC_IPV4_TTL_DEF; + ipv4->total_length = RTE_BE16(sizeof(*ipv4) + sizeof(*udp) + + sizeof(*vxlan)); + /* The HW cannot compute this checksum. */ + ipv4->hdr_checksum = 0; + ipv4->hdr_checksum = rte_ipv4_cksum(ipv4); + + ipv6->vtc_flow = RTE_BE32(SFC_IPV6_VTC_FLOW_DEF); + ipv6->hop_limits = SFC_IPV6_HOP_LIMITS_DEF; + ipv6->payload_len = udp->dgram_len; + + vxlan->vx_flags = RTE_BE32(SFC_VXLAN_FLAGS_DEF); + + /* Take care of the masks. */ + sfc_mae_header_force_item_masks(buf, parsed_items, nb_parsed_items); + + return (spec != NULL) ? efx_mae_action_set_populate_encap(spec) : 0; +} + +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, + const struct sfc_mae_outer_rule *outer_rule, + struct sfc_mae_actions_bundle *bundle, + efx_mae_actions_t *spec, + struct rte_flow_error *error) +{ + bool custom_error = B_FALSE; + int rc = 0; + + switch (action->type) { + case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_DECAP, + bundle->actions_mask); + if (outer_rule == NULL || + outer_rule->encap_type != EFX_TUNNEL_PROTOCOL_VXLAN) + rc = EINVAL; + else + rc = efx_mae_action_set_populate_decap(spec); + break; + 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_VXLAN_ENCAP: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP, + bundle->actions_mask); + rc = sfc_mae_rule_parse_action_vxlan_encap(&sa->mae, + action->conf, + spec, error); + custom_error = B_TRUE; + 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) { + bundle->actions_mask |= (1ULL << action->type); + } else if (!custom_error) { + rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION, + NULL, "Failed to request the action"); + } + + return rc; +} + +static void +sfc_mae_bounce_eh_invalidate(struct sfc_mae_bounce_eh *bounce_eh) +{ + bounce_eh->type = EFX_TUNNEL_PROTOCOL_NONE; +} + +static int +sfc_mae_process_encap_header(struct sfc_adapter *sa, + const struct sfc_mae_bounce_eh *bounce_eh, + struct sfc_mae_encap_header **encap_headerp) +{ + if (bounce_eh->type == EFX_TUNNEL_PROTOCOL_NONE) { + encap_headerp = NULL; + return 0; + } + + *encap_headerp = sfc_mae_encap_header_attach(sa, bounce_eh); + if (*encap_headerp != NULL) + return 0; + + return sfc_mae_encap_header_add(sa, bounce_eh, encap_headerp); +} + +int +sfc_mae_rule_parse_actions(struct sfc_adapter *sa, + const struct rte_flow_action actions[], + struct sfc_flow_spec_mae *spec_mae, + struct rte_flow_error *error) +{ + struct sfc_mae_encap_header *encap_header = NULL; + struct sfc_mae_actions_bundle bundle = {0}; + const struct rte_flow_action *action; + struct sfc_mae *mae = &sa->mae; + efx_mae_actions_t *spec; + int rc; + + rte_errno = 0; + + 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; + + /* Cleanup after previous encap. header bounce buffer usage. */ + sfc_mae_bounce_eh_invalidate(&mae->bounce_eh); + + 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, spec_mae->outer_rule, + &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; + + rc = sfc_mae_process_encap_header(sa, &mae->bounce_eh, &encap_header); + if (rc != 0) + goto fail_process_encap_header; + + spec_mae->action_set = sfc_mae_action_set_attach(sa, encap_header, + spec); + if (spec_mae->action_set != NULL) { + sfc_mae_encap_header_del(sa, encap_header); + efx_mae_action_set_spec_fini(sa->nic, spec); + return 0; + } + + rc = sfc_mae_action_set_add(sa, spec, encap_header, + &spec_mae->action_set); + if (rc != 0) + goto fail_action_set_add; + + return 0; + +fail_action_set_add: + sfc_mae_encap_header_del(sa, encap_header); + +fail_process_encap_header: +fail_rule_parse_action: + efx_mae_action_set_spec_fini(sa->nic, spec); + +fail_action_set_spec_init: + if (rc > 0 && rte_errno == 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; + + sfc_dbg(sa, "enabled flow=%p: AR_ID=0x%08x", + flow, spec_mae->rule_id.id); + + return 0; + +fail_action_rule_insert: + sfc_mae_action_set_disable(sa, action_set); + +fail_action_set_enable: + if (outer_rule != NULL) + 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) { + sfc_err(sa, "failed to disable flow=%p with AR_ID=0x%08x: %s", + flow, spec_mae->rule_id.id, strerror(rc)); + } + sfc_dbg(sa, "disabled flow=%p with AR_ID=0x%08x", + flow, spec_mae->rule_id.id); + spec_mae->rule_id.id = EFX_MAE_RSRC_ID_INVALID; + + sfc_mae_action_set_disable(sa, action_set); + + if (outer_rule != NULL) + sfc_mae_outer_rule_disable(sa, outer_rule); + + return 0; +}