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/* 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"
/* Error reporting: convenience macros. For indicating why a given filter
* insertion is not supported; errors in internal operation or in the
* hardware should be netif_err()s instead.
*/
/* Used when error message is constant. */
#define EFX_TC_ERR_MSG(efx, extack, message) do { \
NL_SET_ERR_MSG_MOD(extack, message); \
if (efx->log_tc_errs) \
netif_info(efx, drv, efx->net_dev, "%s\n", message); \
} while (0)
/* Used when error message is not constant; caller should also supply a
* constant extack message with NL_SET_ERR_MSG_MOD().
*/
#define efx_tc_err(efx, fmt, args...) do { \
if (efx->log_tc_errs) \
netif_info(efx, drv, efx->net_dev, fmt, ##args);\
} while (0)
struct efx_tc_action_set {
u16 deliver:1;
u32 dest_mport;
u32 fw_id; /* index of this entry in firmware actions table */
struct list_head list;
};
struct efx_tc_match_fields {
/* L1 */
u32 ingress_port;
u8 recirc_id;
};
struct efx_tc_match {
struct efx_tc_match_fields value;
struct efx_tc_match_fields mask;
};
struct efx_tc_action_set_list {
struct list_head list;
u32 fw_id;
};
struct efx_tc_flow_rule {
unsigned long cookie;
struct rhash_head linkage;
struct efx_tc_match match;
struct efx_tc_action_set_list acts;
u32 fw_id;
};
enum efx_tc_rule_prios {
EFX_TC_PRIO_TC, /* Rule inserted by TC */
EFX_TC_PRIO_DFLT, /* Default switch rule; one of efx_tc_default_rules */
EFX_TC_PRIO__NUM
};
/**
* 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
* @match_action_ht: Hashtable of TC match-action rules
* @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
* @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)
* @up: have TC datastructures been set up?
*/
struct efx_tc_state {
struct mae_caps *caps;
struct list_head block_list;
struct mutex mutex;
struct rhashtable match_action_ht;
u32 reps_mport_id, reps_mport_vport_id;
s32 reps_filter_uc, reps_filter_mc;
struct {
struct efx_tc_flow_rule pf;
struct efx_tc_flow_rule wire;
} dflt;
bool up;
};
struct efx_rep;
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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