diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/tc.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/tc.h | 228 |
1 files changed, 226 insertions, 2 deletions
diff --git a/drivers/net/ethernet/sfc/tc.h b/drivers/net/ethernet/sfc/tc.h index 418ce8c13a06..7b5190078bee 100644 --- a/drivers/net/ethernet/sfc/tc.h +++ b/drivers/net/ethernet/sfc/tc.h @@ -18,18 +18,78 @@ #define IS_ALL_ONES(v) (!(typeof (v))~(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 { + u8 h_addr[ETH_ALEN]; + struct rhash_head linkage; + refcount_t ref; + u32 fw_id; /* index of this entry in firmware MAC address table */ +}; + +static inline bool efx_ipv6_addr_all_ones(struct in6_addr *addr) +{ + return !memchr_inv(addr, 0xff, sizeof(*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 { + u16 vlan_push:2; + u16 vlan_pop:2; + u16 decap:1; + u16 do_nat:1; + u16 do_ttl_dec:1; u16 deliver:1; + __be16 vlan_tci[2]; + __be16 vlan_proto[2]; struct efx_tc_counter_index *count; + struct efx_tc_encap_action *encap_md; + struct list_head encap_user; + struct efx_tc_action_set_list *user; + struct list_head count_user; u32 dest_mport; - u32 fw_id; /* index of this entry in firmware actions table */ + struct efx_tc_mac_pedit_action *src_mac; + struct efx_tc_mac_pedit_action *dst_mac; + u32 fw_id; struct list_head list; }; struct efx_tc_match_fields { /* L1 */ u32 ingress_port; - u8 recirc_id; + u8 recirc_id; /* mapped from (u32) TC chain_index to smaller space */ /* L2 (inner when encap) */ __be16 eth_proto; __be16 vlan_tci[2], vlan_proto[2]; @@ -44,11 +104,83 @@ struct efx_tc_match_fields { /* L4 */ __be16 l4_sport, l4_dport; /* Ports (UDP, TCP) */ __be16 tcp_flags; + bool tcp_syn_fin_rst; /* true if ANY of SYN/FIN/RST are set */ + /* Encap. The following are *outer* fields. Note that there are no + * outer eth (L2) fields; this is because TC doesn't have them. + */ + __be32 enc_src_ip, enc_dst_ip; + struct in6_addr enc_src_ip6, enc_dst_ip6; + u8 enc_ip_tos, enc_ip_ttl; + __be16 enc_sport, enc_dport; + __be32 enc_keyid; /* e.g. VNI, VSID */ + /* Conntrack. */ + u16 ct_state_trk:1, ct_state_est:1; + u32 ct_mark; + u16 ct_zone; +}; + +static inline bool efx_tc_match_is_encap(const struct efx_tc_match_fields *mask) +{ + return mask->enc_src_ip || mask->enc_dst_ip || + !ipv6_addr_any(&mask->enc_src_ip6) || + !ipv6_addr_any(&mask->enc_dst_ip6) || mask->enc_ip_tos || + mask->enc_ip_ttl || mask->enc_sport || mask->enc_dport; +} + +/** + * 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 { + EFX_TC_EM_DIRECT, + EFX_TC_EM_PSEUDO_MASK, + EFX_TC_EM_PSEUDO_OR, +}; + +struct efx_tc_encap_match { + __be32 src_ip, dst_ip; + struct in6_addr src_ip6, dst_ip6; + __be16 udp_dport; + __be16 udp_sport, udp_sport_mask; + u8 ip_tos, ip_tos_mask; + struct rhash_head linkage; + enum efx_encap_type tun_type; + u8 child_ip_tos_mask; + __be16 child_udp_sport_mask; + refcount_t ref; + enum efx_tc_em_pseudo_type type; + u32 fw_id; /* index of this entry in firmware encap match table */ + struct efx_tc_encap_match *pseudo; /* Referenced pseudo EM if needed */ +}; + +struct efx_tc_recirc_id { + u32 chain_index; + struct net_device *net_dev; + struct rhash_head linkage; + refcount_t ref; + u8 fw_id; /* index allocated for use in the MAE */ }; struct efx_tc_match { struct efx_tc_match_fields value; struct efx_tc_match_fields mask; + struct efx_tc_encap_match *encap; + struct efx_tc_recirc_id *rid; }; struct efx_tc_action_set_list { @@ -56,12 +188,29 @@ struct efx_tc_action_set_list { u32 fw_id; }; +struct efx_tc_lhs_action { + enum efx_encap_type tun_type; + struct efx_tc_recirc_id *rid; + struct efx_tc_ct_zone *zone; + struct efx_tc_counter_index *count; +}; + struct efx_tc_flow_rule { unsigned long cookie; struct rhash_head linkage; struct efx_tc_match match; struct efx_tc_action_set_list acts; + struct efx_tc_action_set_list *fallback; /* what to use when unready? */ + u32 fw_id; +}; + +struct efx_tc_lhs_rule { + unsigned long cookie; + struct efx_tc_match match; + struct efx_tc_lhs_action lhs_act; + struct rhash_head linkage; u32 fw_id; + bool is_ar; /* Action Rule (for OR-AR-CT-AR sequence) */ }; enum efx_tc_rule_prios { @@ -70,6 +219,48 @@ enum efx_tc_rule_prios { EFX_TC_PRIO__NUM }; +struct efx_tc_table_field_fmt { + u16 field_id; + u16 lbn; + u16 width; + u8 masking; + u8 scheme; +}; + +struct efx_tc_table_desc { + u16 type; + u16 key_width; + u16 resp_width; + u16 n_keys; + u16 n_resps; + u16 n_prios; + u8 flags; + u8 scheme; + struct efx_tc_table_field_fmt *keys; + struct efx_tc_table_field_fmt *resps; +}; + +struct efx_tc_table_ct { /* TABLE_ID_CONNTRACK_TABLE */ + struct efx_tc_table_desc desc; + bool hooked; + struct { /* indices of named fields within @desc.keys */ + u8 eth_proto_idx; + u8 ip_proto_idx; + u8 src_ip_idx; /* either v4 or v6 */ + u8 dst_ip_idx; + u8 l4_sport_idx; + u8 l4_dport_idx; + u8 zone_idx; /* for TABLE_FIELD_ID_DOMAIN */ + } keys; + struct { /* indices of named fields within @desc.resps */ + u8 dnat_idx; + u8 nat_ip_idx; + u8 l4_natport_idx; + u8 mark_idx; + u8 counter_id_idx; + } resps; +}; + /** * struct efx_tc_state - control plane data for TC offload * @@ -78,7 +269,17 @@ enum efx_tc_rule_prios { * @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) @@ -93,6 +294,11 @@ enum efx_tc_rule_prios { * %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 { @@ -101,7 +307,17 @@ struct efx_tc_state { struct mutex mutex; struct rhashtable counter_ht; struct rhashtable counter_id_ht; + struct rhashtable encap_ht; + struct rhashtable mac_ht; + struct rhashtable encap_match_ht; struct rhashtable match_action_ht; + struct rhashtable lhs_rule_ht; + struct rhashtable ct_zone_ht; + struct rhashtable ct_ht; + struct rhashtable neigh_ht; + struct rhashtable recirc_ht; + struct ida recirc_ida; + struct efx_tc_table_ct meta_ct; u32 reps_mport_id, reps_mport_vport_id; s32 reps_filter_uc, reps_filter_mc; bool flush_counters; @@ -112,11 +328,19 @@ struct efx_tc_state { struct efx_tc_flow_rule pf; struct efx_tc_flow_rule wire; } dflt; + struct { + struct efx_tc_action_set_list pf; + struct efx_tc_action_set_list reps; + } facts; bool up; }; 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); |