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 18 struct efx_tc_action_set { 19 u16 deliver:1; 20 u32 dest_mport; 21 u32 fw_id; /* index of this entry in firmware actions table */ 22 struct list_head list; 23 }; 24 25 struct efx_tc_match_fields { 26 /* L1 */ 27 u32 ingress_port; 28 u8 recirc_id; 29 }; 30 31 struct efx_tc_match { 32 struct efx_tc_match_fields value; 33 struct efx_tc_match_fields mask; 34 }; 35 36 struct efx_tc_action_set_list { 37 struct list_head list; 38 u32 fw_id; 39 }; 40 41 struct efx_tc_flow_rule { 42 unsigned long cookie; 43 struct rhash_head linkage; 44 struct efx_tc_match match; 45 struct efx_tc_action_set_list acts; 46 u32 fw_id; 47 }; 48 49 enum efx_tc_rule_prios { 50 EFX_TC_PRIO_TC, /* Rule inserted by TC */ 51 EFX_TC_PRIO_DFLT, /* Default switch rule; one of efx_tc_default_rules */ 52 EFX_TC_PRIO__NUM 53 }; 54 55 /** 56 * struct efx_tc_state - control plane data for TC offload 57 * 58 * @caps: MAE capabilities reported by MCDI 59 * @block_list: List of &struct efx_tc_block_binding 60 * @mutex: Used to serialise operations on TC hashtables 61 * @match_action_ht: Hashtable of TC match-action rules 62 * @reps_mport_id: MAE port allocated for representor RX 63 * @reps_filter_uc: VNIC filter for representor unicast RX (promisc) 64 * @reps_filter_mc: VNIC filter for representor multicast RX (allmulti) 65 * @reps_mport_vport_id: vport_id for representor RX filters 66 * @dflt: Match-action rules for default switching; at priority 67 * %EFX_TC_PRIO_DFLT. Named by *ingress* port 68 * @dflt.pf: rule for traffic ingressing from PF (egresses to wire) 69 * @dflt.wire: rule for traffic ingressing from wire (egresses to PF) 70 * @up: have TC datastructures been set up? 71 */ 72 struct efx_tc_state { 73 struct mae_caps *caps; 74 struct list_head block_list; 75 struct mutex mutex; 76 struct rhashtable match_action_ht; 77 u32 reps_mport_id, reps_mport_vport_id; 78 s32 reps_filter_uc, reps_filter_mc; 79 struct { 80 struct efx_tc_flow_rule pf; 81 struct efx_tc_flow_rule wire; 82 } dflt; 83 bool up; 84 }; 85 86 struct efx_rep; 87 88 int efx_tc_configure_default_rule_rep(struct efx_rep *efv); 89 void efx_tc_deconfigure_default_rule(struct efx_nic *efx, 90 struct efx_tc_flow_rule *rule); 91 int efx_tc_flower(struct efx_nic *efx, struct net_device *net_dev, 92 struct flow_cls_offload *tc, struct efx_rep *efv); 93 94 int efx_tc_insert_rep_filters(struct efx_nic *efx); 95 void efx_tc_remove_rep_filters(struct efx_nic *efx); 96 97 int efx_init_tc(struct efx_nic *efx); 98 void efx_fini_tc(struct efx_nic *efx); 99 100 int efx_init_struct_tc(struct efx_nic *efx); 101 void efx_fini_struct_tc(struct efx_nic *efx); 102 103 #endif /* EFX_TC_H */ 104