1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /**************************************************************************** 3 * Driver for Solarflare network controllers and boards 4 * Copyright 2019 Solarflare Communications Inc. 5 * Copyright 2020-2022 Xilinx Inc. 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 as published 9 * by the Free Software Foundation, incorporated herein by reference. 10 */ 11 12 #ifndef EFX_TC_H 13 #define EFX_TC_H 14 #include <net/flow_offload.h> 15 #include <linux/rhashtable.h> 16 #include "net_driver.h" 17 #include "tc_counters.h" 18 19 #define IS_ALL_ONES(v) (!(typeof (v))~(v)) 20 21 struct efx_tc_action_set { 22 u16 deliver:1; 23 struct efx_tc_counter_index *count; 24 u32 dest_mport; 25 u32 fw_id; /* index of this entry in firmware actions table */ 26 struct list_head list; 27 }; 28 29 struct efx_tc_match_fields { 30 /* L1 */ 31 u32 ingress_port; 32 u8 recirc_id; 33 /* L2 (inner when encap) */ 34 __be16 eth_proto; 35 __be16 vlan_tci[2], vlan_proto[2]; 36 u8 eth_saddr[ETH_ALEN], eth_daddr[ETH_ALEN]; 37 /* L3 (when IP) */ 38 u8 ip_proto, ip_tos, ip_ttl; 39 __be32 src_ip, dst_ip; 40 #ifdef CONFIG_IPV6 41 struct in6_addr src_ip6, dst_ip6; 42 #endif 43 bool ip_frag, ip_firstfrag; 44 /* L4 */ 45 __be16 l4_sport, l4_dport; /* Ports (UDP, TCP) */ 46 __be16 tcp_flags; 47 }; 48 49 struct efx_tc_match { 50 struct efx_tc_match_fields value; 51 struct efx_tc_match_fields mask; 52 }; 53 54 struct efx_tc_action_set_list { 55 struct list_head list; 56 u32 fw_id; 57 }; 58 59 struct efx_tc_flow_rule { 60 unsigned long cookie; 61 struct rhash_head linkage; 62 struct efx_tc_match match; 63 struct efx_tc_action_set_list acts; 64 u32 fw_id; 65 }; 66 67 enum efx_tc_rule_prios { 68 EFX_TC_PRIO_TC, /* Rule inserted by TC */ 69 EFX_TC_PRIO_DFLT, /* Default switch rule; one of efx_tc_default_rules */ 70 EFX_TC_PRIO__NUM 71 }; 72 73 /** 74 * struct efx_tc_state - control plane data for TC offload 75 * 76 * @caps: MAE capabilities reported by MCDI 77 * @block_list: List of &struct efx_tc_block_binding 78 * @mutex: Used to serialise operations on TC hashtables 79 * @counter_ht: Hashtable of TC counters (FW IDs and counter values) 80 * @counter_id_ht: Hashtable mapping TC counter cookies to counters 81 * @match_action_ht: Hashtable of TC match-action rules 82 * @reps_mport_id: MAE port allocated for representor RX 83 * @reps_filter_uc: VNIC filter for representor unicast RX (promisc) 84 * @reps_filter_mc: VNIC filter for representor multicast RX (allmulti) 85 * @reps_mport_vport_id: vport_id for representor RX filters 86 * @flush_counters: counters have been stopped, waiting for drain 87 * @flush_gen: final generation count per type array as reported by 88 * MC_CMD_MAE_COUNTERS_STREAM_STOP 89 * @seen_gen: most recent generation count per type as seen by efx_tc_rx() 90 * @flush_wq: wait queue used by efx_mae_stop_counters() to wait for 91 * MAE counters RXQ to finish draining 92 * @dflt: Match-action rules for default switching; at priority 93 * %EFX_TC_PRIO_DFLT. Named by *ingress* port 94 * @dflt.pf: rule for traffic ingressing from PF (egresses to wire) 95 * @dflt.wire: rule for traffic ingressing from wire (egresses to PF) 96 * @up: have TC datastructures been set up? 97 */ 98 struct efx_tc_state { 99 struct mae_caps *caps; 100 struct list_head block_list; 101 struct mutex mutex; 102 struct rhashtable counter_ht; 103 struct rhashtable counter_id_ht; 104 struct rhashtable match_action_ht; 105 u32 reps_mport_id, reps_mport_vport_id; 106 s32 reps_filter_uc, reps_filter_mc; 107 bool flush_counters; 108 u32 flush_gen[EFX_TC_COUNTER_TYPE_MAX]; 109 u32 seen_gen[EFX_TC_COUNTER_TYPE_MAX]; 110 wait_queue_head_t flush_wq; 111 struct { 112 struct efx_tc_flow_rule pf; 113 struct efx_tc_flow_rule wire; 114 } dflt; 115 bool up; 116 }; 117 118 struct efx_rep; 119 120 int efx_tc_configure_default_rule_rep(struct efx_rep *efv); 121 void efx_tc_deconfigure_default_rule(struct efx_nic *efx, 122 struct efx_tc_flow_rule *rule); 123 int efx_tc_flower(struct efx_nic *efx, struct net_device *net_dev, 124 struct flow_cls_offload *tc, struct efx_rep *efv); 125 126 int efx_tc_insert_rep_filters(struct efx_nic *efx); 127 void efx_tc_remove_rep_filters(struct efx_nic *efx); 128 129 int efx_init_tc(struct efx_nic *efx); 130 void efx_fini_tc(struct efx_nic *efx); 131 132 int efx_init_struct_tc(struct efx_nic *efx); 133 void efx_fini_struct_tc(struct efx_nic *efx); 134 135 #endif /* EFX_TC_H */ 136