/* SPDX-License-Identifier: BSD-3-Clause * * Copyright(c) 2019-2021 Xilinx, Inc. * Copyright(c) 2019 Solarflare Communications Inc. * * This software was jointly developed between OKTET Labs (under contract * for Solarflare) and Solarflare Communications, Inc. */ #ifndef _SFC_MAE_H #define _SFC_MAE_H #include #include #include "efx.h" #ifdef __cplusplus extern "C" { #endif /** FW-allocatable resource context */ struct sfc_mae_fw_rsrc { unsigned int refcnt; RTE_STD_C11 union { efx_mae_aset_id_t aset_id; efx_mae_rule_id_t rule_id; efx_mae_eh_id_t eh_id; }; }; /** Outer rule registry entry */ struct sfc_mae_outer_rule { TAILQ_ENTRY(sfc_mae_outer_rule) entries; unsigned int refcnt; efx_mae_match_spec_t *match_spec; efx_tunnel_protocol_t encap_type; struct sfc_mae_fw_rsrc fw_rsrc; }; TAILQ_HEAD(sfc_mae_outer_rules, sfc_mae_outer_rule); /** Encap. header registry entry */ struct sfc_mae_encap_header { TAILQ_ENTRY(sfc_mae_encap_header) entries; unsigned int refcnt; uint8_t *buf; size_t size; efx_tunnel_protocol_t type; struct sfc_mae_fw_rsrc fw_rsrc; }; TAILQ_HEAD(sfc_mae_encap_headers, sfc_mae_encap_header); /** Action set registry entry */ struct sfc_mae_action_set { TAILQ_ENTRY(sfc_mae_action_set) entries; unsigned int refcnt; efx_mae_actions_t *spec; struct sfc_mae_encap_header *encap_header; struct sfc_mae_fw_rsrc fw_rsrc; }; TAILQ_HEAD(sfc_mae_action_sets, sfc_mae_action_set); /** Options for MAE support status */ enum sfc_mae_status { SFC_MAE_STATUS_UNKNOWN = 0, SFC_MAE_STATUS_UNSUPPORTED, SFC_MAE_STATUS_SUPPORTED }; /* * Encap. header bounce buffer. It is used to store header data * when parsing the header definition in the action VXLAN_ENCAP. */ struct sfc_mae_bounce_eh { uint8_t *buf; size_t buf_size; size_t size; efx_tunnel_protocol_t type; }; struct sfc_mae { /** Assigned switch domain identifier */ uint16_t switch_domain_id; /** Assigned switch port identifier */ uint16_t switch_port_id; /** NIC support for MAE status */ enum sfc_mae_status status; /** Priority level limit for MAE outer rules */ unsigned int nb_outer_rule_prios_max; /** Priority level limit for MAE action rules */ unsigned int nb_action_rule_prios_max; /** Encapsulation support status */ uint32_t encap_types_supported; /** Outer rule registry */ struct sfc_mae_outer_rules outer_rules; /** Encap. header registry */ struct sfc_mae_encap_headers encap_headers; /** Action set registry */ struct sfc_mae_action_sets action_sets; /** Encap. header bounce buffer */ struct sfc_mae_bounce_eh bounce_eh; }; struct sfc_adapter; struct sfc_flow_spec; /** This implementation supports double-tagging */ #define SFC_MAE_MATCH_VLAN_MAX_NTAGS (2) /** It is possible to keep track of one item ETH and two items VLAN */ #define SFC_MAE_L2_MAX_NITEMS (SFC_MAE_MATCH_VLAN_MAX_NTAGS + 1) /** Auxiliary entry format to keep track of L2 "type" ("inner_type") */ struct sfc_mae_ethertype { rte_be16_t value; rte_be16_t mask; }; struct sfc_mae_pattern_data { /** * Keeps track of "type" ("inner_type") mask and value for each * parsed L2 item in a pattern. These values/masks get filled * in MAE match specification at the end of parsing. Also, this * information is used to conduct consistency checks: * * - If an item ETH is followed by a single item VLAN, * the former must have "type" set to one of supported * TPID values (0x8100, 0x88a8, 0x9100, 0x9200, 0x9300), * or 0x0000/0x0000. * * - If an item ETH is followed by two items VLAN, the * item ETH must have "type" set to one of supported TPID * values (0x88a8, 0x9100, 0x9200, 0x9300), or 0x0000/0x0000, * and the outermost VLAN item must have "inner_type" set * to TPID value 0x8100, or 0x0000/0x0000 * * - If a L2 item is followed by a L3 one, the former must * indicate "type" ("inner_type") which corresponds to * the protocol used in the L3 item, or 0x0000/0x0000. * * In turn, mapping between RTE convention (above requirements) and * MAE fields is non-trivial. The following scheme indicates * which item EtherTypes go to which MAE fields in the case * of single tag: * * ETH (0x8100) --> VLAN0_PROTO_BE * VLAN (L3 EtherType) --> ETHER_TYPE_BE * * Similarly, in the case of double tagging: * * ETH (0x88a8) --> VLAN0_PROTO_BE * VLAN (0x8100) --> VLAN1_PROTO_BE * VLAN (L3 EtherType) --> ETHER_TYPE_BE */ struct sfc_mae_ethertype ethertypes[SFC_MAE_L2_MAX_NITEMS]; rte_be16_t tci_masks[SFC_MAE_MATCH_VLAN_MAX_NTAGS]; unsigned int nb_vlan_tags; /** * L3 requirement for the innermost L2 item's "type" ("inner_type"). * This contains one of: * - 0x0800/0xffff: IPV4 * - 0x86dd/0xffff: IPV6 * - 0x0000/0x0000: no L3 item */ struct sfc_mae_ethertype innermost_ethertype_restriction; /** * The following two fields keep track of L3 "proto" mask and value. * The corresponding fields get filled in MAE match specification * at the end of parsing. Also, the information is used by a * post-check to enforce consistency requirements: * * - If a L3 item is followed by an item TCP, the former has * its "proto" set to either 0x06/0xff or 0x00/0x00. * * - If a L3 item is followed by an item UDP, the former has * its "proto" set to either 0x11/0xff or 0x00/0x00. */ uint8_t l3_next_proto_value; uint8_t l3_next_proto_mask; /* * L4 requirement for L3 item's "proto". * This contains one of: * - 0x06/0xff: TCP * - 0x11/0xff: UDP * - 0x00/0x00: no L4 item */ uint8_t l3_next_proto_restriction_value; uint8_t l3_next_proto_restriction_mask; /* Projected state of EFX_MAE_FIELD_HAS_OVLAN match bit */ bool has_ovlan_value; bool has_ovlan_mask; /* Projected state of EFX_MAE_FIELD_HAS_IVLAN match bit */ bool has_ivlan_value; bool has_ivlan_mask; }; struct sfc_mae_parse_ctx { struct sfc_adapter *sa; efx_mae_match_spec_t *match_spec_action; efx_mae_match_spec_t *match_spec_outer; /* * This points to either of the above two specifications depending * on which part of the pattern is being parsed (outer / inner). */ efx_mae_match_spec_t *match_spec; /* * This points to either "field_ids_remap_to_encap" * or "field_ids_no_remap" (see sfc_mae.c) depending on * which part of the pattern is being parsed. */ const efx_mae_field_id_t *field_ids_remap; /* These two fields correspond to the tunnel-specific default mask. */ size_t tunnel_def_mask_size; const void *tunnel_def_mask; bool match_mport_set; struct sfc_mae_pattern_data pattern_data; efx_tunnel_protocol_t encap_type; unsigned int priority; }; int sfc_mae_attach(struct sfc_adapter *sa); void sfc_mae_detach(struct sfc_adapter *sa); sfc_flow_cleanup_cb_t sfc_mae_flow_cleanup; 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); 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); sfc_flow_verify_cb_t sfc_mae_flow_verify; sfc_flow_insert_cb_t sfc_mae_flow_insert; sfc_flow_remove_cb_t sfc_mae_flow_remove; #ifdef __cplusplus } #endif #endif /* _SFC_MAE_H */