1/*
2 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#ifndef __MLX5_EN_TC_H__
34#define __MLX5_EN_TC_H__
35
36#include <net/pkt_cls.h>
37#include "en.h"
38#include "eswitch.h"
39#include "en/tc_ct.h"
40#include "en/tc_tun.h"
41#include "en/tc/int_port.h"
42#include "en/tc/meter.h"
43#include "en_rep.h"
44
45#define MLX5E_TC_FLOW_ID_MASK 0x0000ffff
46
47#ifdef CONFIG_MLX5_ESWITCH
48
49#define NIC_FLOW_ATTR_SZ (sizeof(struct mlx5_flow_attr) +\
50 sizeof(struct mlx5_nic_flow_attr))
51#define ESW_FLOW_ATTR_SZ (sizeof(struct mlx5_flow_attr) +\
52 sizeof(struct mlx5_esw_flow_attr))
53#define ns_to_attr_sz(ns) (((ns) == MLX5_FLOW_NAMESPACE_FDB) ?\
54 ESW_FLOW_ATTR_SZ :\
55 NIC_FLOW_ATTR_SZ)
56
57struct mlx5_fs_chains *mlx5e_nic_chains(struct mlx5e_tc_table *tc);
58int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags);
59
60struct mlx5e_tc_update_priv {
61 struct net_device *fwd_dev;
62 bool skb_done;
63 bool forward_tx;
64};
65
66struct mlx5_nic_flow_attr {
67 u32 flow_tag;
68 u32 hairpin_tirn;
69 struct mlx5_flow_table *hairpin_ft;
70};
71
72struct mlx5_flow_attr {
73 u32 action;
74 unsigned long tc_act_cookies[TCA_ACT_MAX_PRIO];
75 struct mlx5_fc *counter;
76 struct mlx5_modify_hdr *modify_hdr;
77 struct mlx5e_mod_hdr_handle *mh; /* attached mod header instance */
78 struct mlx5e_mod_hdr_handle *slow_mh; /* attached mod header instance for slow path */
79 struct mlx5_ct_attr ct_attr;
80 struct mlx5e_sample_attr sample_attr;
81 struct mlx5e_meter_attr meter_attr;
82 struct mlx5e_tc_flow_parse_attr *parse_attr;
83 u32 chain;
84 u16 prio;
85 u16 tc_act_cookies_count;
86 u32 dest_chain;
87 struct mlx5_flow_table *ft;
88 struct mlx5_flow_table *dest_ft;
89 struct mlx5_flow_table *extra_split_ft;
90 u8 inner_match_level;
91 u8 outer_match_level;
92 u8 tun_ip_version;
93 int tunnel_id; /* mapped tunnel id */
94 u32 flags;
95 u32 exe_aso_type;
96 struct list_head list;
97 struct mlx5e_post_act_handle *post_act_handle;
98 struct mlx5_flow_attr *branch_true;
99 struct mlx5_flow_attr *branch_false;
100 struct mlx5_flow_attr *jumping_attr;
101 struct mlx5_flow_handle *act_id_restore_rule;
102 /* keep this union last */
103 union {
104 DECLARE_FLEX_ARRAY(struct mlx5_esw_flow_attr, esw_attr);
105 DECLARE_FLEX_ARRAY(struct mlx5_nic_flow_attr, nic_attr);
106 };
107};
108
109enum {
110 MLX5_ATTR_FLAG_VLAN_HANDLED = BIT(0),
111 MLX5_ATTR_FLAG_SLOW_PATH = BIT(1),
112 MLX5_ATTR_FLAG_NO_IN_PORT = BIT(2),
113 MLX5_ATTR_FLAG_SRC_REWRITE = BIT(3),
114 MLX5_ATTR_FLAG_SAMPLE = BIT(4),
115 MLX5_ATTR_FLAG_ACCEPT = BIT(5),
116 MLX5_ATTR_FLAG_CT = BIT(6),
117 MLX5_ATTR_FLAG_TERMINATING = BIT(7),
118 MLX5_ATTR_FLAG_MTU = BIT(8),
119};
120
121/* Returns true if any of the flags that require skipping further TC/NF processing are set. */
122static inline bool
123mlx5e_tc_attr_flags_skip(u32 attr_flags)
124{
125 return attr_flags & (MLX5_ATTR_FLAG_SLOW_PATH | MLX5_ATTR_FLAG_ACCEPT);
126}
127
128struct mlx5_rx_tun_attr {
129 u16 decap_vport;
130 union {
131 __be32 v4;
132 struct in6_addr v6;
133 } src_ip; /* Valid if decap_vport is not zero */
134 union {
135 __be32 v4;
136 struct in6_addr v6;
137 } dst_ip; /* Valid if decap_vport is not zero */
138};
139
140#define MLX5E_TC_TABLE_CHAIN_TAG_BITS 16
141#define MLX5E_TC_TABLE_CHAIN_TAG_MASK GENMASK(MLX5E_TC_TABLE_CHAIN_TAG_BITS - 1, 0)
142
143#define MLX5E_TC_MAX_INT_PORT_NUM (32)
144
145#if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
146
147struct tunnel_match_key {
148 struct flow_dissector_key_control enc_control;
149 struct flow_dissector_key_keyid enc_key_id;
150 struct flow_dissector_key_ports enc_tp;
151 struct flow_dissector_key_ip enc_ip;
152 union {
153 struct flow_dissector_key_ipv4_addrs enc_ipv4;
154 struct flow_dissector_key_ipv6_addrs enc_ipv6;
155 };
156
157 int filter_ifindex;
158};
159
160struct tunnel_match_enc_opts {
161 struct flow_dissector_key_enc_opts key;
162 struct flow_dissector_key_enc_opts mask;
163};
164
165/* Tunnel_id mapping is TUNNEL_INFO_BITS + ENC_OPTS_BITS.
166 * Upper TUNNEL_INFO_BITS for general tunnel info.
167 * Lower ENC_OPTS_BITS bits for enc_opts.
168 */
169#define TUNNEL_INFO_BITS 12
170#define TUNNEL_INFO_BITS_MASK GENMASK(TUNNEL_INFO_BITS - 1, 0)
171#define ENC_OPTS_BITS 11
172#define ENC_OPTS_BITS_MASK GENMASK(ENC_OPTS_BITS - 1, 0)
173#define TUNNEL_ID_BITS (TUNNEL_INFO_BITS + ENC_OPTS_BITS)
174#define TUNNEL_ID_MASK GENMASK(TUNNEL_ID_BITS - 1, 0)
175
176enum {
177 MLX5E_TC_FLAG_INGRESS_BIT,
178 MLX5E_TC_FLAG_EGRESS_BIT,
179 MLX5E_TC_FLAG_NIC_OFFLOAD_BIT,
180 MLX5E_TC_FLAG_ESW_OFFLOAD_BIT,
181 MLX5E_TC_FLAG_FT_OFFLOAD_BIT,
182 MLX5E_TC_FLAG_LAST_EXPORTED_BIT = MLX5E_TC_FLAG_FT_OFFLOAD_BIT,
183};
184
185#define MLX5_TC_FLAG(flag) BIT(MLX5E_TC_FLAG_##flag##_BIT)
186
187int mlx5e_tc_esw_init(struct mlx5_rep_uplink_priv *uplink_priv);
188void mlx5e_tc_esw_cleanup(struct mlx5_rep_uplink_priv *uplink_priv);
189
190int mlx5e_tc_ht_init(struct rhashtable *tc_ht);
191void mlx5e_tc_ht_cleanup(struct rhashtable *tc_ht);
192
193int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
194 struct flow_cls_offload *f, unsigned long flags);
195int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
196 struct flow_cls_offload *f, unsigned long flags);
197
198int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv,
199 struct flow_cls_offload *f, unsigned long flags);
200int mlx5e_tc_fill_action_stats(struct mlx5e_priv *priv,
201 struct flow_offload_action *fl_act);
202
203int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv,
204 struct tc_cls_matchall_offload *f);
205int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv,
206 struct tc_cls_matchall_offload *f);
207
208struct mlx5e_encap_entry;
209void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
210 struct mlx5e_encap_entry *e,
211 struct list_head *flow_list);
212void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
213 struct mlx5e_encap_entry *e,
214 struct list_head *flow_list);
215bool mlx5e_encap_take(struct mlx5e_encap_entry *e);
216void mlx5e_encap_put(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e);
217
218void mlx5e_take_all_encap_flows(struct mlx5e_encap_entry *e, struct list_head *flow_list);
219void mlx5e_put_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list);
220
221struct mlx5e_neigh_hash_entry;
222struct mlx5e_encap_entry *
223mlx5e_get_next_init_encap(struct mlx5e_neigh_hash_entry *nhe,
224 struct mlx5e_encap_entry *e);
225void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe);
226
227void mlx5e_tc_reoffload_flows_work(struct work_struct *work);
228
229enum mlx5e_tc_attr_to_reg {
230 MAPPED_OBJ_TO_REG,
231 VPORT_TO_REG,
232 TUNNEL_TO_REG,
233 CTSTATE_TO_REG,
234 ZONE_TO_REG,
235 ZONE_RESTORE_TO_REG,
236 MARK_TO_REG,
237 LABELS_TO_REG,
238 FTEID_TO_REG,
239 NIC_MAPPED_OBJ_TO_REG,
240 NIC_ZONE_RESTORE_TO_REG,
241 PACKET_COLOR_TO_REG,
242};
243
244struct mlx5e_tc_attr_to_reg_mapping {
245 int mfield; /* rewrite field */
246 int moffset; /* bit offset of mfield */
247 int mlen; /* bits to rewrite/match */
248
249 int soffset; /* byte offset of spec for match */
250};
251
252extern struct mlx5e_tc_attr_to_reg_mapping mlx5e_tc_attr_to_reg_mappings[];
253
254#define MLX5_REG_MAPPING_MOFFSET(reg_id) (mlx5e_tc_attr_to_reg_mappings[reg_id].moffset)
255#define MLX5_REG_MAPPING_MBITS(reg_id) (mlx5e_tc_attr_to_reg_mappings[reg_id].mlen)
256#define MLX5_REG_MAPPING_MASK(reg_id) (GENMASK(mlx5e_tc_attr_to_reg_mappings[reg_id].mlen - 1, 0))
257
258bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
259 struct net_device *out_dev);
260
261int mlx5e_tc_match_to_reg_set(struct mlx5_core_dev *mdev,
262 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
263 enum mlx5_flow_namespace_type ns,
264 enum mlx5e_tc_attr_to_reg type,
265 u32 data);
266
267void mlx5e_tc_match_to_reg_mod_hdr_change(struct mlx5_core_dev *mdev,
268 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
269 enum mlx5e_tc_attr_to_reg type,
270 int act_id, u32 data);
271
272void mlx5e_tc_match_to_reg_match(struct mlx5_flow_spec *spec,
273 enum mlx5e_tc_attr_to_reg type,
274 u32 data,
275 u32 mask);
276
277void mlx5e_tc_match_to_reg_get_match(struct mlx5_flow_spec *spec,
278 enum mlx5e_tc_attr_to_reg type,
279 u32 *data,
280 u32 *mask);
281
282int mlx5e_tc_match_to_reg_set_and_get_id(struct mlx5_core_dev *mdev,
283 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
284 enum mlx5_flow_namespace_type ns,
285 enum mlx5e_tc_attr_to_reg type,
286 u32 data);
287
288int mlx5e_tc_attach_mod_hdr(struct mlx5e_priv *priv,
289 struct mlx5e_tc_flow *flow,
290 struct mlx5_flow_attr *attr);
291
292void mlx5e_tc_detach_mod_hdr(struct mlx5e_priv *priv,
293 struct mlx5e_tc_flow *flow,
294 struct mlx5_flow_attr *attr);
295
296void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev,
297 struct flow_match_basic *match, bool outer,
298 void *headers_c, void *headers_v);
299
300int mlx5e_tc_nic_init(struct mlx5e_priv *priv);
301void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv);
302
303int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
304 void *cb_priv);
305
306struct mlx5_flow_handle *
307mlx5e_add_offloaded_nic_rule(struct mlx5e_priv *priv,
308 struct mlx5_flow_spec *spec,
309 struct mlx5_flow_attr *attr);
310void mlx5e_del_offloaded_nic_rule(struct mlx5e_priv *priv,
311 struct mlx5_flow_handle *rule,
312 struct mlx5_flow_attr *attr);
313
314struct mlx5_flow_handle *
315mlx5_tc_rule_insert(struct mlx5e_priv *priv,
316 struct mlx5_flow_spec *spec,
317 struct mlx5_flow_attr *attr);
318void
319mlx5_tc_rule_delete(struct mlx5e_priv *priv,
320 struct mlx5_flow_handle *rule,
321 struct mlx5_flow_attr *attr);
322
323bool mlx5e_tc_is_vf_tunnel(struct net_device *out_dev, struct net_device *route_dev);
324int mlx5e_tc_query_route_vport(struct net_device *out_dev, struct net_device *route_dev,
325 u16 *vport);
326
327int mlx5e_set_fwd_to_int_port_actions(struct mlx5e_priv *priv,
328 struct mlx5_flow_attr *attr,
329 int ifindex,
330 enum mlx5e_tc_int_port_type type,
331 u32 *action,
332 int out_index);
333#else /* CONFIG_MLX5_CLS_ACT */
334static inline int mlx5e_tc_nic_init(struct mlx5e_priv *priv) { return 0; }
335static inline void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv) {}
336static inline int mlx5e_tc_ht_init(struct rhashtable *tc_ht) { return 0; }
337static inline void mlx5e_tc_ht_cleanup(struct rhashtable *tc_ht) {}
338static inline int
339mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)
340{ return -EOPNOTSUPP; }
341
342#endif /* CONFIG_MLX5_CLS_ACT */
343
344struct mlx5_flow_attr *mlx5_alloc_flow_attr(enum mlx5_flow_namespace_type type);
345
346struct mlx5_flow_handle *
347mlx5e_add_offloaded_nic_rule(struct mlx5e_priv *priv,
348 struct mlx5_flow_spec *spec,
349 struct mlx5_flow_attr *attr);
350void mlx5e_del_offloaded_nic_rule(struct mlx5e_priv *priv,
351 struct mlx5_flow_handle *rule,
352 struct mlx5_flow_attr *attr);
353
354#else /* CONFIG_MLX5_ESWITCH */
355static inline int mlx5e_tc_nic_init(struct mlx5e_priv *priv) { return 0; }
356static inline void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv) {}
357static inline int mlx5e_tc_num_filters(struct mlx5e_priv *priv,
358 unsigned long flags)
359{
360 return 0;
361}
362
363static inline int
364mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)
365{ return -EOPNOTSUPP; }
366#endif
367
368#if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
369struct mlx5e_tc_table *mlx5e_tc_table_alloc(void);
370void mlx5e_tc_table_free(struct mlx5e_tc_table *tc);
371static inline bool mlx5e_cqe_regb_chain(struct mlx5_cqe64 *cqe)
372{
373 u32 chain, reg_b;
374
375 reg_b = be32_to_cpu(cqe->ft_metadata);
376
377 if (reg_b >> (MLX5E_TC_TABLE_CHAIN_TAG_BITS + ESW_ZONE_ID_BITS))
378 return false;
379
380 chain = reg_b & MLX5E_TC_TABLE_CHAIN_TAG_MASK;
381 if (chain)
382 return true;
383
384 return false;
385}
386
387bool mlx5e_tc_update_skb_nic(struct mlx5_cqe64 *cqe, struct sk_buff *skb);
388bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe, struct sk_buff *skb,
389 struct mapping_ctx *mapping_ctx, u32 mapped_obj_id,
390 struct mlx5_tc_ct_priv *ct_priv,
391 u32 zone_restore_id, u32 tunnel_id,
392 struct mlx5e_tc_update_priv *tc_priv);
393#else /* CONFIG_MLX5_CLS_ACT */
394static inline struct mlx5e_tc_table *mlx5e_tc_table_alloc(void) { return NULL; }
395static inline void mlx5e_tc_table_free(struct mlx5e_tc_table *tc) {}
396static inline bool mlx5e_cqe_regb_chain(struct mlx5_cqe64 *cqe)
397{ return false; }
398static inline bool
399mlx5e_tc_update_skb_nic(struct mlx5_cqe64 *cqe, struct sk_buff *skb)
400{ return true; }
401#endif
402
403int mlx5e_tc_action_miss_mapping_get(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr,
404 u64 act_miss_cookie, u32 *act_miss_mapping);
405void mlx5e_tc_action_miss_mapping_put(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr,
406 u32 act_miss_mapping);
407
408#endif /* __MLX5_EN_TC_H__ */
409

source code of linux/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h