122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2019 Solarflare Communications Inc.
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* Copyright 2020-2022 Xilinx Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#ifndef EFX_TC_H
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#define EFX_TC_H
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#include <net/flow_offload.h>
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#include <linux/rhashtable.h>
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#include "net_driver.h"
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/* Error reporting: convenience macros. For indicating why a given filter
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* insertion is not supported; errors in internal operation or in the
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* hardware should be netif_err()s instead.
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*/
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/* Used when error message is constant. */
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#define EFX_TC_ERR_MSG(efx, extack, message) do { \
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NL_SET_ERR_MSG_MOD(extack, message); \
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if (efx->log_tc_errs) \
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netif_info(efx, drv, efx->net_dev, "%s\n", message); \
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} while (0)
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/* Used when error message is not constant; caller should also supply a
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* constant extack message with NL_SET_ERR_MSG_MOD().
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*/
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#define efx_tc_err(efx, fmt, args...) do { \
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if (efx->log_tc_errs) \
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netif_info(efx, drv, efx->net_dev, fmt, ##args);\
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} while (0)
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struct efx_tc_action_set {
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u16 deliver:1;
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u32 dest_mport;
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u32 fw_id; /* index of this entry in firmware actions table */
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struct list_head list;
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};
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struct efx_tc_match_fields {
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/* L1 */
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u32 ingress_port;
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u8 recirc_id;
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};
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struct efx_tc_match {
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struct efx_tc_match_fields value;
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struct efx_tc_match_fields mask;
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};
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struct efx_tc_action_set_list {
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struct list_head list;
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u32 fw_id;
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};
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struct efx_tc_flow_rule {
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unsigned long cookie;
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struct rhash_head linkage;
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struct efx_tc_match match;
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struct efx_tc_action_set_list acts;
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u32 fw_id;
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};
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enum efx_tc_rule_prios {
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EFX_TC_PRIO_TC, /* Rule inserted by TC */
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EFX_TC_PRIO_DFLT, /* Default switch rule; one of efx_tc_default_rules */
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EFX_TC_PRIO__NUM
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};
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/**
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* struct efx_tc_state - control plane data for TC offload
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*
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* @caps: MAE capabilities reported by MCDI
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* @block_list: List of &struct efx_tc_block_binding
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* @mutex: Used to serialise operations on TC hashtables
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* @match_action_ht: Hashtable of TC match-action rules
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* @reps_mport_id: MAE port allocated for representor RX
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* @reps_filter_uc: VNIC filter for representor unicast RX (promisc)
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* @reps_filter_mc: VNIC filter for representor multicast RX (allmulti)
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* @reps_mport_vport_id: vport_id for representor RX filters
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* @dflt: Match-action rules for default switching; at priority
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* %EFX_TC_PRIO_DFLT. Named by *ingress* port
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* @dflt.pf: rule for traffic ingressing from PF (egresses to wire)
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* @dflt.wire: rule for traffic ingressing from wire (egresses to PF)
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* @up: have TC datastructures been set up?
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*/
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struct efx_tc_state {
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struct mae_caps *caps;
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struct list_head block_list;
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struct mutex mutex;
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struct rhashtable match_action_ht;
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u32 reps_mport_id, reps_mport_vport_id;
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s32 reps_filter_uc, reps_filter_mc;
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struct {
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struct efx_tc_flow_rule pf;
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struct efx_tc_flow_rule wire;
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} dflt;
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bool up;
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};
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struct efx_rep;
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int efx_tc_configure_default_rule_rep(struct efx_rep *efv);
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void efx_tc_deconfigure_default_rule(struct efx_nic *efx,
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struct efx_tc_flow_rule *rule);
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int efx_tc_flower(struct efx_nic *efx, struct net_device *net_dev,
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struct flow_cls_offload *tc, struct efx_rep *efv);
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int efx_tc_insert_rep_filters(struct efx_nic *efx);
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void efx_tc_remove_rep_filters(struct efx_nic *efx);
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int efx_init_tc(struct efx_nic *efx);
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void efx_fini_tc(struct efx_nic *efx);
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int efx_init_struct_tc(struct efx_nic *efx);
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void efx_fini_struct_tc(struct efx_nic *efx);
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#endif /* EFX_TC_H */
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