/* SPDX-License-Identifier: GPL-2.0-only */ /**************************************************************************** * Driver for Solarflare network controllers and boards * Copyright 2019 Solarflare Communications Inc. * Copyright 2020-2022 Xilinx Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation, incorporated herein by reference. */ #ifndef EFX_TC_H #define EFX_TC_H #include <net/flow_offload.h> #include <linux/rhashtable.h> #include "net_driver.h" #include "tc_counters.h" #define IS_ALL_ONES(v) … /** * struct efx_tc_mac_pedit_action - mac pedit action fields * * @h_addr: mac address field of ethernet header * @linkage: rhashtable reference * @ref: reference count * @fw_id: index of this entry in firmware MAC address table * * MAC address edits are indirected through a table in the hardware */ struct efx_tc_mac_pedit_action { … }; static inline bool efx_ipv6_addr_all_ones(struct in6_addr *addr) { … } struct efx_tc_encap_action; /* see tc_encap_actions.h */ /** * struct efx_tc_action_set - collection of tc action fields * * @vlan_push: the number of vlan headers to push * @vlan_pop: the number of vlan headers to pop * @decap: used to indicate a tunnel header decapsulation should take place * @do_nat: perform NAT/NPT with values returned by conntrack match * @do_ttl_dec: used to indicate IP TTL / Hop Limit should be decremented * @deliver: used to indicate a deliver action should take place * @vlan_tci: tci fields for vlan push actions * @vlan_proto: ethernet types for vlan push actions * @count: counter mapping * @encap_md: encap entry in tc_encap_ht table * @encap_user: linked list of encap users (encap_md->users) * @user: owning action-set-list. Only populated if @encap_md is; used by efx_tc_update_encap() fallback handling * @count_user: linked list of counter users (counter->users) * @dest_mport: destination mport * @src_mac: source mac entry in tc_mac_ht table * @dst_mac: destination mac entry in tc_mac_ht table * @fw_id: index of this entry in firmware actions table * @list: linked list of tc actions * */ struct efx_tc_action_set { … }; struct efx_tc_match_fields { … }; static inline bool efx_tc_match_is_encap(const struct efx_tc_match_fields *mask) { … } /** * enum efx_tc_em_pseudo_type - &struct efx_tc_encap_match pseudo type * * These are used to classify "pseudo" encap matches, which don't refer * to an entry in hardware but rather indicate that a section of the * match space is in use by another Outer Rule. * * @EFX_TC_EM_DIRECT: real HW entry in Outer Rule table; not a pseudo. * Hardware index in &struct efx_tc_encap_match.fw_id is valid. * @EFX_TC_EM_PSEUDO_MASK: registered by an encap match which includes a * match on an optional field (currently ip_tos and/or udp_sport), * to prevent an overlapping encap match _without_ optional fields. * The pseudo encap match may be referenced again by an encap match * with different values for these fields, but all masks must match the * first (stored in our child_* fields). * @EFX_TC_EM_PSEUDO_OR: registered by an fLHS rule that fits in the OR * table. The &struct efx_tc_lhs_rule already holds the HW OR entry. * Only one reference to this encap match may exist. */ enum efx_tc_em_pseudo_type { … }; struct efx_tc_encap_match { … }; struct efx_tc_recirc_id { … }; struct efx_tc_match { … }; struct efx_tc_action_set_list { … }; struct efx_tc_lhs_action { … }; struct efx_tc_flow_rule { … }; struct efx_tc_lhs_rule { … }; enum efx_tc_rule_prios { … }; struct efx_tc_table_field_fmt { … }; struct efx_tc_table_desc { … }; struct efx_tc_table_ct { … }; /** * struct efx_tc_state - control plane data for TC offload * * @caps: MAE capabilities reported by MCDI * @block_list: List of &struct efx_tc_block_binding * @mutex: Used to serialise operations on TC hashtables * @counter_ht: Hashtable of TC counters (FW IDs and counter values) * @counter_id_ht: Hashtable mapping TC counter cookies to counters * @encap_ht: Hashtable of TC encap actions * @mac_ht: Hashtable of MAC address entries (for pedits) * @encap_match_ht: Hashtable of TC encap matches * @match_action_ht: Hashtable of TC match-action rules * @lhs_rule_ht: Hashtable of TC left-hand (act ct & goto chain) rules * @ct_zone_ht: Hashtable of TC conntrack flowtable bindings * @ct_ht: Hashtable of TC conntrack flow entries * @neigh_ht: Hashtable of neighbour watches (&struct efx_neigh_binder) * @recirc_ht: Hashtable of recirculation ID mappings (&struct efx_tc_recirc_id) * @recirc_ida: Recirculation ID allocator * @meta_ct: MAE table layout for conntrack table * @reps_mport_id: MAE port allocated for representor RX * @reps_filter_uc: VNIC filter for representor unicast RX (promisc) * @reps_filter_mc: VNIC filter for representor multicast RX (allmulti) * @reps_mport_vport_id: vport_id for representor RX filters * @flush_counters: counters have been stopped, waiting for drain * @flush_gen: final generation count per type array as reported by * MC_CMD_MAE_COUNTERS_STREAM_STOP * @seen_gen: most recent generation count per type as seen by efx_tc_rx() * @flush_wq: wait queue used by efx_mae_stop_counters() to wait for * MAE counters RXQ to finish draining * @dflt: Match-action rules for default switching; at priority * %EFX_TC_PRIO_DFLT. Named by *ingress* port * @dflt.pf: rule for traffic ingressing from PF (egresses to wire) * @dflt.wire: rule for traffic ingressing from wire (egresses to PF) * @facts: Fallback action-set-lists for unready rules. Named by *egress* port * @facts.pf: action-set-list for unready rules on PF netdev, hence applying to * traffic from wire, and egressing to PF * @facts.reps: action-set-list for unready rules on representors, hence * applying to traffic from representees, and egressing to the reps mport * @up: have TC datastructures been set up? */ struct efx_tc_state { … }; struct efx_rep; enum efx_encap_type efx_tc_indr_netdev_type(struct net_device *net_dev); struct efx_rep *efx_tc_flower_lookup_efv(struct efx_nic *efx, struct net_device *dev); s64 efx_tc_flower_external_mport(struct efx_nic *efx, struct efx_rep *efv); int efx_tc_configure_default_rule_rep(struct efx_rep *efv); void efx_tc_deconfigure_default_rule(struct efx_nic *efx, struct efx_tc_flow_rule *rule); int efx_tc_flower(struct efx_nic *efx, struct net_device *net_dev, struct flow_cls_offload *tc, struct efx_rep *efv); int efx_tc_insert_rep_filters(struct efx_nic *efx); void efx_tc_remove_rep_filters(struct efx_nic *efx); int efx_init_tc(struct efx_nic *efx); void efx_fini_tc(struct efx_nic *efx); int efx_init_struct_tc(struct efx_nic *efx); void efx_fini_struct_tc(struct efx_nic *efx); #endif /* EFX_TC_H */
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