tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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/* Error reporting: convenience macros. For indicating why a given filter
19 * insertion is not supported; errors in internal operation or in the
20 * hardware should be netif_err()s instead.
21 */
22/* Used when error message is constant. */
23#define EFX_TC_ERR_MSG(efx, extack, message) do { \
24 NL_SET_ERR_MSG_MOD(extack, message); \
25 if (efx->log_tc_errs) \
26 netif_info(efx, drv, efx->net_dev, "%s\n", message); \
27} while (0)
28/* Used when error message is not constant; caller should also supply a
29 * constant extack message with NL_SET_ERR_MSG_MOD().
30 */
31#define efx_tc_err(efx, fmt, args...) do { \
32if (efx->log_tc_errs) \
33 netif_info(efx, drv, efx->net_dev, fmt, ##args);\
34} while (0)
35
36struct efx_tc_action_set {
37 u16 deliver:1;
38 u32 dest_mport;
39 u32 fw_id; /* index of this entry in firmware actions table */
40 struct list_head list;
41};
42
43struct efx_tc_match_fields {
44 /* L1 */
45 u32 ingress_port;
46 u8 recirc_id;
47};
48
49struct efx_tc_match {
50 struct efx_tc_match_fields value;
51 struct efx_tc_match_fields mask;
52};
53
54struct efx_tc_action_set_list {
55 struct list_head list;
56 u32 fw_id;
57};
58
59struct 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
67enum 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 * @match_action_ht: Hashtable of TC match-action rules
80 * @reps_mport_id: MAE port allocated for representor RX
81 * @reps_filter_uc: VNIC filter for representor unicast RX (promisc)
82 * @reps_filter_mc: VNIC filter for representor multicast RX (allmulti)
83 * @reps_mport_vport_id: vport_id for representor RX filters
84 * @dflt: Match-action rules for default switching; at priority
85 * %EFX_TC_PRIO_DFLT. Named by *ingress* port
86 * @dflt.pf: rule for traffic ingressing from PF (egresses to wire)
87 * @dflt.wire: rule for traffic ingressing from wire (egresses to PF)
88 * @up: have TC datastructures been set up?
89 */
90struct efx_tc_state {
91 struct mae_caps *caps;
92 struct list_head block_list;
93 struct mutex mutex;
94 struct rhashtable match_action_ht;
95 u32 reps_mport_id, reps_mport_vport_id;
96 s32 reps_filter_uc, reps_filter_mc;
97 struct {
98 struct efx_tc_flow_rule pf;
99 struct efx_tc_flow_rule wire;
100 } dflt;
101 bool up;
102};
103
104struct efx_rep;
105
106int efx_tc_configure_default_rule_rep(struct efx_rep *efv);
107void efx_tc_deconfigure_default_rule(struct efx_nic *efx,
108 struct efx_tc_flow_rule *rule);
109int efx_tc_flower(struct efx_nic *efx, struct net_device *net_dev,
110 struct flow_cls_offload *tc, struct efx_rep *efv);
111
112int efx_tc_insert_rep_filters(struct efx_nic *efx);
113void efx_tc_remove_rep_filters(struct efx_nic *efx);
114
115int efx_init_tc(struct efx_nic *efx);
116void efx_fini_tc(struct efx_nic *efx);
117
118int efx_init_struct_tc(struct efx_nic *efx);
119void efx_fini_struct_tc(struct efx_nic *efx);
120
121#endif /* EFX_TC_H */