diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/tc.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/tc.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/tc.h b/drivers/net/ethernet/sfc/tc.h new file mode 100644 index 000000000000..196fd74ed973 --- /dev/null +++ b/drivers/net/ethernet/sfc/tc.h @@ -0,0 +1,121 @@ +/* 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 */ |