1 #ifndef _NET_FLOW_OFFLOAD_H
2 #define _NET_FLOW_OFFLOAD_H
3
4 #include <linux/kernel.h>
5 #include <linux/list.h>
6 #include <linux/netlink.h>
7 #include <net/flow_dissector.h>
8
9 struct flow_match {
10 struct flow_dissector *dissector;
11 void *mask;
12 void *key;
13 };
14
15 struct flow_match_meta {
16 struct flow_dissector_key_meta *key, *mask;
17 };
18
19 struct flow_match_basic {
20 struct flow_dissector_key_basic *key, *mask;
21 };
22
23 struct flow_match_control {
24 struct flow_dissector_key_control *key, *mask;
25 };
26
27 struct flow_match_eth_addrs {
28 struct flow_dissector_key_eth_addrs *key, *mask;
29 };
30
31 struct flow_match_vlan {
32 struct flow_dissector_key_vlan *key, *mask;
33 };
34
35 struct flow_match_arp {
36 struct flow_dissector_key_arp *key, *mask;
37 };
38
39 struct flow_match_ipv4_addrs {
40 struct flow_dissector_key_ipv4_addrs *key, *mask;
41 };
42
43 struct flow_match_ipv6_addrs {
44 struct flow_dissector_key_ipv6_addrs *key, *mask;
45 };
46
47 struct flow_match_ip {
48 struct flow_dissector_key_ip *key, *mask;
49 };
50
51 struct flow_match_ports {
52 struct flow_dissector_key_ports *key, *mask;
53 };
54
55 struct flow_match_ports_range {
56 struct flow_dissector_key_ports_range *key, *mask;
57 };
58
59 struct flow_match_icmp {
60 struct flow_dissector_key_icmp *key, *mask;
61 };
62
63 struct flow_match_tcp {
64 struct flow_dissector_key_tcp *key, *mask;
65 };
66
67 struct flow_match_ipsec {
68 struct flow_dissector_key_ipsec *key, *mask;
69 };
70
71 struct flow_match_mpls {
72 struct flow_dissector_key_mpls *key, *mask;
73 };
74
75 struct flow_match_enc_keyid {
76 struct flow_dissector_key_keyid *key, *mask;
77 };
78
79 struct flow_match_enc_opts {
80 struct flow_dissector_key_enc_opts *key, *mask;
81 };
82
83 struct flow_match_ct {
84 struct flow_dissector_key_ct *key, *mask;
85 };
86
87 struct flow_match_pppoe {
88 struct flow_dissector_key_pppoe *key, *mask;
89 };
90
91 struct flow_match_l2tpv3 {
92 struct flow_dissector_key_l2tpv3 *key, *mask;
93 };
94
95 struct flow_rule;
96
97 void flow_rule_match_meta(const struct flow_rule *rule,
98 struct flow_match_meta *out);
99 void flow_rule_match_basic(const struct flow_rule *rule,
100 struct flow_match_basic *out);
101 void flow_rule_match_control(const struct flow_rule *rule,
102 struct flow_match_control *out);
103 void flow_rule_match_eth_addrs(const struct flow_rule *rule,
104 struct flow_match_eth_addrs *out);
105 void flow_rule_match_vlan(const struct flow_rule *rule,
106 struct flow_match_vlan *out);
107 void flow_rule_match_cvlan(const struct flow_rule *rule,
108 struct flow_match_vlan *out);
109 void flow_rule_match_arp(const struct flow_rule *rule,
110 struct flow_match_arp *out);
111 void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
112 struct flow_match_ipv4_addrs *out);
113 void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
114 struct flow_match_ipv6_addrs *out);
115 void flow_rule_match_ip(const struct flow_rule *rule,
116 struct flow_match_ip *out);
117 void flow_rule_match_ports(const struct flow_rule *rule,
118 struct flow_match_ports *out);
119 void flow_rule_match_ports_range(const struct flow_rule *rule,
120 struct flow_match_ports_range *out);
121 void flow_rule_match_tcp(const struct flow_rule *rule,
122 struct flow_match_tcp *out);
123 void flow_rule_match_ipsec(const struct flow_rule *rule,
124 struct flow_match_ipsec *out);
125 void flow_rule_match_icmp(const struct flow_rule *rule,
126 struct flow_match_icmp *out);
127 void flow_rule_match_mpls(const struct flow_rule *rule,
128 struct flow_match_mpls *out);
129 void flow_rule_match_enc_control(const struct flow_rule *rule,
130 struct flow_match_control *out);
131 void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
132 struct flow_match_ipv4_addrs *out);
133 void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
134 struct flow_match_ipv6_addrs *out);
135 void flow_rule_match_enc_ip(const struct flow_rule *rule,
136 struct flow_match_ip *out);
137 void flow_rule_match_enc_ports(const struct flow_rule *rule,
138 struct flow_match_ports *out);
139 void flow_rule_match_enc_keyid(const struct flow_rule *rule,
140 struct flow_match_enc_keyid *out);
141 void flow_rule_match_enc_opts(const struct flow_rule *rule,
142 struct flow_match_enc_opts *out);
143 void flow_rule_match_ct(const struct flow_rule *rule,
144 struct flow_match_ct *out);
145 void flow_rule_match_pppoe(const struct flow_rule *rule,
146 struct flow_match_pppoe *out);
147 void flow_rule_match_l2tpv3(const struct flow_rule *rule,
148 struct flow_match_l2tpv3 *out);
149
150 enum flow_action_id {
151 FLOW_ACTION_ACCEPT = 0,
152 FLOW_ACTION_DROP,
153 FLOW_ACTION_TRAP,
154 FLOW_ACTION_GOTO,
155 FLOW_ACTION_REDIRECT,
156 FLOW_ACTION_MIRRED,
157 FLOW_ACTION_REDIRECT_INGRESS,
158 FLOW_ACTION_MIRRED_INGRESS,
159 FLOW_ACTION_VLAN_PUSH,
160 FLOW_ACTION_VLAN_POP,
161 FLOW_ACTION_VLAN_MANGLE,
162 FLOW_ACTION_TUNNEL_ENCAP,
163 FLOW_ACTION_TUNNEL_DECAP,
164 FLOW_ACTION_MANGLE,
165 FLOW_ACTION_ADD,
166 FLOW_ACTION_CSUM,
167 FLOW_ACTION_MARK,
168 FLOW_ACTION_PTYPE,
169 FLOW_ACTION_PRIORITY,
170 FLOW_ACTION_RX_QUEUE_MAPPING,
171 FLOW_ACTION_WAKE,
172 FLOW_ACTION_QUEUE,
173 FLOW_ACTION_SAMPLE,
174 FLOW_ACTION_POLICE,
175 FLOW_ACTION_CT,
176 FLOW_ACTION_CT_METADATA,
177 FLOW_ACTION_MPLS_PUSH,
178 FLOW_ACTION_MPLS_POP,
179 FLOW_ACTION_MPLS_MANGLE,
180 FLOW_ACTION_GATE,
181 FLOW_ACTION_PPPOE_PUSH,
182 FLOW_ACTION_JUMP,
183 FLOW_ACTION_PIPE,
184 FLOW_ACTION_VLAN_PUSH_ETH,
185 FLOW_ACTION_VLAN_POP_ETH,
186 FLOW_ACTION_CONTINUE,
187 NUM_FLOW_ACTIONS,
188 };
189
190 /* This is mirroring enum pedit_header_type definition for easy mapping between
191 * tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to
192 * FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver.
193 */
194 enum flow_action_mangle_base {
195 FLOW_ACT_MANGLE_UNSPEC = 0,
196 FLOW_ACT_MANGLE_HDR_TYPE_ETH,
197 FLOW_ACT_MANGLE_HDR_TYPE_IP4,
198 FLOW_ACT_MANGLE_HDR_TYPE_IP6,
199 FLOW_ACT_MANGLE_HDR_TYPE_TCP,
200 FLOW_ACT_MANGLE_HDR_TYPE_UDP,
201 };
202
203 enum flow_action_hw_stats_bit {
204 FLOW_ACTION_HW_STATS_IMMEDIATE_BIT,
205 FLOW_ACTION_HW_STATS_DELAYED_BIT,
206 FLOW_ACTION_HW_STATS_DISABLED_BIT,
207
208 FLOW_ACTION_HW_STATS_NUM_BITS
209 };
210
211 enum flow_action_hw_stats {
212 FLOW_ACTION_HW_STATS_IMMEDIATE =
213 BIT(FLOW_ACTION_HW_STATS_IMMEDIATE_BIT),
214 FLOW_ACTION_HW_STATS_DELAYED = BIT(FLOW_ACTION_HW_STATS_DELAYED_BIT),
215 FLOW_ACTION_HW_STATS_ANY = FLOW_ACTION_HW_STATS_IMMEDIATE |
216 FLOW_ACTION_HW_STATS_DELAYED,
217 FLOW_ACTION_HW_STATS_DISABLED =
218 BIT(FLOW_ACTION_HW_STATS_DISABLED_BIT),
219 FLOW_ACTION_HW_STATS_DONT_CARE = BIT(FLOW_ACTION_HW_STATS_NUM_BITS) - 1,
220 };
221
222 typedef void (*action_destr)(void *priv);
223
224 struct flow_action_cookie {
225 u32 cookie_len;
226 u8 cookie[];
227 };
228
229 struct flow_action_cookie *flow_action_cookie_create(void *data,
230 unsigned int len,
231 gfp_t gfp);
232 void flow_action_cookie_destroy(struct flow_action_cookie *cookie);
233
234 struct flow_action_entry {
235 enum flow_action_id id;
236 u32 hw_index;
237 unsigned long cookie;
238 u64 miss_cookie;
239 enum flow_action_hw_stats hw_stats;
240 action_destr destructor;
241 void *destructor_priv;
242 union {
243 u32 chain_index; /* FLOW_ACTION_GOTO */
244 struct net_device *dev; /* FLOW_ACTION_REDIRECT */
245 struct { /* FLOW_ACTION_VLAN */
246 u16 vid;
247 __be16 proto;
248 u8 prio;
249 } vlan;
250 struct { /* FLOW_ACTION_VLAN_PUSH_ETH */
251 unsigned char dst[ETH_ALEN];
252 unsigned char src[ETH_ALEN];
253 } vlan_push_eth;
254 struct { /* FLOW_ACTION_MANGLE */
255 /* FLOW_ACTION_ADD */
256 enum flow_action_mangle_base htype;
257 u32 offset;
258 u32 mask;
259 u32 val;
260 } mangle;
261 struct ip_tunnel_info *tunnel; /* FLOW_ACTION_TUNNEL_ENCAP */
262 u32 csum_flags; /* FLOW_ACTION_CSUM */
263 u32 mark; /* FLOW_ACTION_MARK */
264 u16 ptype; /* FLOW_ACTION_PTYPE */
265 u16 rx_queue; /* FLOW_ACTION_RX_QUEUE_MAPPING */
266 u32 priority; /* FLOW_ACTION_PRIORITY */
267 struct { /* FLOW_ACTION_QUEUE */
268 u32 ctx;
269 u32 index;
270 u8 vf;
271 } queue;
272 struct { /* FLOW_ACTION_SAMPLE */
273 struct psample_group *psample_group;
274 u32 rate;
275 u32 trunc_size;
276 bool truncate;
277 } sample;
278 struct { /* FLOW_ACTION_POLICE */
279 u32 burst;
280 u64 rate_bytes_ps;
281 u64 peakrate_bytes_ps;
282 u32 avrate;
283 u16 overhead;
284 u64 burst_pkt;
285 u64 rate_pkt_ps;
286 u32 mtu;
287 struct {
288 enum flow_action_id act_id;
289 u32 extval;
290 } exceed, notexceed;
291 } police;
292 struct { /* FLOW_ACTION_CT */
293 int action;
294 u16 zone;
295 struct nf_flowtable *flow_table;
296 } ct;
297 struct {
298 unsigned long cookie;
299 u32 mark;
300 u32 labels[4];
301 bool orig_dir;
302 } ct_metadata;
303 struct { /* FLOW_ACTION_MPLS_PUSH */
304 u32 label;
305 __be16 proto;
306 u8 tc;
307 u8 bos;
308 u8 ttl;
309 } mpls_push;
310 struct { /* FLOW_ACTION_MPLS_POP */
311 __be16 proto;
312 } mpls_pop;
313 struct { /* FLOW_ACTION_MPLS_MANGLE */
314 u32 label;
315 u8 tc;
316 u8 bos;
317 u8 ttl;
318 } mpls_mangle;
319 struct {
320 s32 prio;
321 u64 basetime;
322 u64 cycletime;
323 u64 cycletimeext;
324 u32 num_entries;
325 struct action_gate_entry *entries;
326 } gate;
327 struct { /* FLOW_ACTION_PPPOE_PUSH */
328 u16 sid;
329 } pppoe;
330 };
331 struct flow_action_cookie *user_cookie; /* user defined action cookie */
332 };
333
334 struct flow_action {
335 unsigned int num_entries;
336 struct flow_action_entry entries[] __counted_by(num_entries);
337 };
338
flow_action_has_entries(const struct flow_action * action)339 static inline bool flow_action_has_entries(const struct flow_action *action)
340 {
341 return action->num_entries;
342 }
343
344 /**
345 * flow_offload_has_one_action() - check if exactly one action is present
346 * @action: tc filter flow offload action
347 *
348 * Return: true if exactly one action is present.
349 */
flow_offload_has_one_action(const struct flow_action * action)350 static inline bool flow_offload_has_one_action(const struct flow_action *action)
351 {
352 return action->num_entries == 1;
353 }
354
flow_action_is_last_entry(const struct flow_action * action,const struct flow_action_entry * entry)355 static inline bool flow_action_is_last_entry(const struct flow_action *action,
356 const struct flow_action_entry *entry)
357 {
358 return entry == &action->entries[action->num_entries - 1];
359 }
360
361 #define flow_action_for_each(__i, __act, __actions) \
362 for (__i = 0, __act = &(__actions)->entries[0]; \
363 __i < (__actions)->num_entries; \
364 __act = &(__actions)->entries[++__i])
365
366 static inline bool
flow_action_mixed_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack)367 flow_action_mixed_hw_stats_check(const struct flow_action *action,
368 struct netlink_ext_ack *extack)
369 {
370 const struct flow_action_entry *action_entry;
371 u8 last_hw_stats;
372 int i;
373
374 if (flow_offload_has_one_action(action))
375 return true;
376
377 flow_action_for_each(i, action_entry, action) {
378 if (i && action_entry->hw_stats != last_hw_stats) {
379 NL_SET_ERR_MSG_MOD(extack, "Mixing HW stats types for actions is not supported");
380 return false;
381 }
382 last_hw_stats = action_entry->hw_stats;
383 }
384 return true;
385 }
386
387 static inline const struct flow_action_entry *
flow_action_first_entry_get(const struct flow_action * action)388 flow_action_first_entry_get(const struct flow_action *action)
389 {
390 WARN_ON(!flow_action_has_entries(action));
391 return &action->entries[0];
392 }
393
394 static inline bool
__flow_action_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack,bool check_allow_bit,enum flow_action_hw_stats_bit allow_bit)395 __flow_action_hw_stats_check(const struct flow_action *action,
396 struct netlink_ext_ack *extack,
397 bool check_allow_bit,
398 enum flow_action_hw_stats_bit allow_bit)
399 {
400 const struct flow_action_entry *action_entry;
401
402 if (!flow_action_has_entries(action))
403 return true;
404 if (!flow_action_mixed_hw_stats_check(action, extack))
405 return false;
406
407 action_entry = flow_action_first_entry_get(action);
408
409 /* Zero is not a legal value for hw_stats, catch anyone passing it */
410 WARN_ON_ONCE(!action_entry->hw_stats);
411
412 if (!check_allow_bit &&
413 ~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) {
414 NL_SET_ERR_MSG_MOD(extack, "Driver supports only default HW stats type \"any\"");
415 return false;
416 } else if (check_allow_bit &&
417 !(action_entry->hw_stats & BIT(allow_bit))) {
418 NL_SET_ERR_MSG_MOD(extack, "Driver does not support selected HW stats type");
419 return false;
420 }
421 return true;
422 }
423
424 static inline bool
flow_action_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack,enum flow_action_hw_stats_bit allow_bit)425 flow_action_hw_stats_check(const struct flow_action *action,
426 struct netlink_ext_ack *extack,
427 enum flow_action_hw_stats_bit allow_bit)
428 {
429 return __flow_action_hw_stats_check(action, extack, true, allow_bit);
430 }
431
432 static inline bool
flow_action_basic_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack)433 flow_action_basic_hw_stats_check(const struct flow_action *action,
434 struct netlink_ext_ack *extack)
435 {
436 return __flow_action_hw_stats_check(action, extack, false, 0);
437 }
438
439 struct flow_rule {
440 struct flow_match match;
441 struct flow_action action;
442 };
443
444 struct flow_rule *flow_rule_alloc(unsigned int num_actions);
445
flow_rule_match_key(const struct flow_rule * rule,enum flow_dissector_key_id key)446 static inline bool flow_rule_match_key(const struct flow_rule *rule,
447 enum flow_dissector_key_id key)
448 {
449 return dissector_uses_key(rule->match.dissector, key);
450 }
451
452 /**
453 * flow_rule_is_supp_control_flags() - check for supported control flags
454 * @supp_flags: control flags supported by driver
455 * @ctrl_flags: control flags present in rule
456 * @extack: The netlink extended ACK for reporting errors.
457 *
458 * Return: true if only supported control flags are set, false otherwise.
459 */
flow_rule_is_supp_control_flags(const u32 supp_flags,const u32 ctrl_flags,struct netlink_ext_ack * extack)460 static inline bool flow_rule_is_supp_control_flags(const u32 supp_flags,
461 const u32 ctrl_flags,
462 struct netlink_ext_ack *extack)
463 {
464 if (likely((ctrl_flags & ~supp_flags) == 0))
465 return true;
466
467 NL_SET_ERR_MSG_FMT_MOD(extack,
468 "Unsupported match on control.flags %#x",
469 ctrl_flags);
470
471 return false;
472 }
473
474 /**
475 * flow_rule_is_supp_enc_control_flags() - check for supported control flags
476 * @supp_enc_flags: encapsulation control flags supported by driver
477 * @enc_ctrl_flags: encapsulation control flags present in rule
478 * @extack: The netlink extended ACK for reporting errors.
479 *
480 * Return: true if only supported control flags are set, false otherwise.
481 */
flow_rule_is_supp_enc_control_flags(const u32 supp_enc_flags,const u32 enc_ctrl_flags,struct netlink_ext_ack * extack)482 static inline bool flow_rule_is_supp_enc_control_flags(const u32 supp_enc_flags,
483 const u32 enc_ctrl_flags,
484 struct netlink_ext_ack *extack)
485 {
486 if (likely((enc_ctrl_flags & ~supp_enc_flags) == 0))
487 return true;
488
489 NL_SET_ERR_MSG_FMT_MOD(extack,
490 "Unsupported match on enc_control.flags %#x",
491 enc_ctrl_flags);
492
493 return false;
494 }
495
496 /**
497 * flow_rule_has_control_flags() - check for presence of any control flags
498 * @ctrl_flags: control flags present in rule
499 * @extack: The netlink extended ACK for reporting errors.
500 *
501 * Return: true if control flags are set, false otherwise.
502 */
flow_rule_has_control_flags(const u32 ctrl_flags,struct netlink_ext_ack * extack)503 static inline bool flow_rule_has_control_flags(const u32 ctrl_flags,
504 struct netlink_ext_ack *extack)
505 {
506 return !flow_rule_is_supp_control_flags(0, ctrl_flags, extack);
507 }
508
509 /**
510 * flow_rule_has_enc_control_flags() - check for presence of any control flags
511 * @enc_ctrl_flags: encapsulation control flags present in rule
512 * @extack: The netlink extended ACK for reporting errors.
513 *
514 * Return: true if control flags are set, false otherwise.
515 */
flow_rule_has_enc_control_flags(const u32 enc_ctrl_flags,struct netlink_ext_ack * extack)516 static inline bool flow_rule_has_enc_control_flags(const u32 enc_ctrl_flags,
517 struct netlink_ext_ack *extack)
518 {
519 return !flow_rule_is_supp_enc_control_flags(0, enc_ctrl_flags, extack);
520 }
521
522 /**
523 * flow_rule_match_has_control_flags() - match and check for any control flags
524 * @rule: The flow_rule under evaluation.
525 * @extack: The netlink extended ACK for reporting errors.
526 *
527 * Return: true if control flags are set, false otherwise.
528 */
flow_rule_match_has_control_flags(struct flow_rule * rule,struct netlink_ext_ack * extack)529 static inline bool flow_rule_match_has_control_flags(struct flow_rule *rule,
530 struct netlink_ext_ack *extack)
531 {
532 struct flow_match_control match;
533
534 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL))
535 return false;
536
537 flow_rule_match_control(rule, &match);
538
539 return flow_rule_has_control_flags(match.mask->flags, extack);
540 }
541
542 struct flow_stats {
543 u64 pkts;
544 u64 bytes;
545 u64 drops;
546 u64 lastused;
547 enum flow_action_hw_stats used_hw_stats;
548 bool used_hw_stats_valid;
549 };
550
flow_stats_update(struct flow_stats * flow_stats,u64 bytes,u64 pkts,u64 drops,u64 lastused,enum flow_action_hw_stats used_hw_stats)551 static inline void flow_stats_update(struct flow_stats *flow_stats,
552 u64 bytes, u64 pkts,
553 u64 drops, u64 lastused,
554 enum flow_action_hw_stats used_hw_stats)
555 {
556 flow_stats->pkts += pkts;
557 flow_stats->bytes += bytes;
558 flow_stats->drops += drops;
559 flow_stats->lastused = max_t(u64, flow_stats->lastused, lastused);
560
561 /* The driver should pass value with a maximum of one bit set.
562 * Passing FLOW_ACTION_HW_STATS_ANY is invalid.
563 */
564 WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY);
565 flow_stats->used_hw_stats |= used_hw_stats;
566 flow_stats->used_hw_stats_valid = true;
567 }
568
569 enum flow_block_command {
570 FLOW_BLOCK_BIND,
571 FLOW_BLOCK_UNBIND,
572 };
573
574 enum flow_block_binder_type {
575 FLOW_BLOCK_BINDER_TYPE_UNSPEC,
576 FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
577 FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
578 FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP,
579 FLOW_BLOCK_BINDER_TYPE_RED_MARK,
580 };
581
582 struct flow_block {
583 struct list_head cb_list;
584 };
585
586 struct netlink_ext_ack;
587
588 struct flow_block_offload {
589 enum flow_block_command command;
590 enum flow_block_binder_type binder_type;
591 bool block_shared;
592 bool unlocked_driver_cb;
593 struct net *net;
594 struct flow_block *block;
595 struct list_head cb_list;
596 struct list_head *driver_block_list;
597 struct netlink_ext_ack *extack;
598 struct Qdisc *sch;
599 struct list_head *cb_list_head;
600 };
601
602 enum tc_setup_type;
603 typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data,
604 void *cb_priv);
605
606 struct flow_block_cb;
607
608 struct flow_block_indr {
609 struct list_head list;
610 struct net_device *dev;
611 struct Qdisc *sch;
612 enum flow_block_binder_type binder_type;
613 void *data;
614 void *cb_priv;
615 void (*cleanup)(struct flow_block_cb *block_cb);
616 };
617
618 struct flow_block_cb {
619 struct list_head driver_list;
620 struct list_head list;
621 flow_setup_cb_t *cb;
622 void *cb_ident;
623 void *cb_priv;
624 void (*release)(void *cb_priv);
625 struct flow_block_indr indr;
626 unsigned int refcnt;
627 };
628
629 struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
630 void *cb_ident, void *cb_priv,
631 void (*release)(void *cb_priv));
632 struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb,
633 void *cb_ident, void *cb_priv,
634 void (*release)(void *cb_priv),
635 struct flow_block_offload *bo,
636 struct net_device *dev,
637 struct Qdisc *sch, void *data,
638 void *indr_cb_priv,
639 void (*cleanup)(struct flow_block_cb *block_cb));
640 void flow_block_cb_free(struct flow_block_cb *block_cb);
641
642 struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block,
643 flow_setup_cb_t *cb, void *cb_ident);
644
645 void *flow_block_cb_priv(struct flow_block_cb *block_cb);
646 void flow_block_cb_incref(struct flow_block_cb *block_cb);
647 unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
648
flow_block_cb_add(struct flow_block_cb * block_cb,struct flow_block_offload * offload)649 static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
650 struct flow_block_offload *offload)
651 {
652 list_add_tail(&block_cb->list, &offload->cb_list);
653 }
654
flow_block_cb_remove(struct flow_block_cb * block_cb,struct flow_block_offload * offload)655 static inline void flow_block_cb_remove(struct flow_block_cb *block_cb,
656 struct flow_block_offload *offload)
657 {
658 list_move(&block_cb->list, &offload->cb_list);
659 }
660
flow_indr_block_cb_remove(struct flow_block_cb * block_cb,struct flow_block_offload * offload)661 static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb,
662 struct flow_block_offload *offload)
663 {
664 list_del(&block_cb->indr.list);
665 list_move(&block_cb->list, &offload->cb_list);
666 }
667
668 bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident,
669 struct list_head *driver_block_list);
670
671 int flow_block_cb_setup_simple(struct flow_block_offload *f,
672 struct list_head *driver_list,
673 flow_setup_cb_t *cb,
674 void *cb_ident, void *cb_priv, bool ingress_only);
675
676 enum flow_cls_command {
677 FLOW_CLS_REPLACE,
678 FLOW_CLS_DESTROY,
679 FLOW_CLS_STATS,
680 FLOW_CLS_TMPLT_CREATE,
681 FLOW_CLS_TMPLT_DESTROY,
682 };
683
684 struct flow_cls_common_offload {
685 u32 chain_index;
686 __be16 protocol;
687 u32 prio;
688 struct netlink_ext_ack *extack;
689 };
690
691 struct flow_cls_offload {
692 struct flow_cls_common_offload common;
693 enum flow_cls_command command;
694 bool use_act_stats;
695 unsigned long cookie;
696 struct flow_rule *rule;
697 struct flow_stats stats;
698 u32 classid;
699 };
700
701 enum offload_act_command {
702 FLOW_ACT_REPLACE,
703 FLOW_ACT_DESTROY,
704 FLOW_ACT_STATS,
705 };
706
707 struct flow_offload_action {
708 struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/
709 enum offload_act_command command;
710 enum flow_action_id id;
711 u32 index;
712 unsigned long cookie;
713 struct flow_stats stats;
714 struct flow_action action;
715 };
716
717 struct flow_offload_action *offload_action_alloc(unsigned int num_actions);
718
719 static inline struct flow_rule *
flow_cls_offload_flow_rule(struct flow_cls_offload * flow_cmd)720 flow_cls_offload_flow_rule(struct flow_cls_offload *flow_cmd)
721 {
722 return flow_cmd->rule;
723 }
724
flow_block_init(struct flow_block * flow_block)725 static inline void flow_block_init(struct flow_block *flow_block)
726 {
727 INIT_LIST_HEAD(&flow_block->cb_list);
728 }
729
730 typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv,
731 enum tc_setup_type type, void *type_data,
732 void *data,
733 void (*cleanup)(struct flow_block_cb *block_cb));
734
735 int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);
736 void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv,
737 void (*release)(void *cb_priv));
738 int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch,
739 enum tc_setup_type type, void *data,
740 struct flow_block_offload *bo,
741 void (*cleanup)(struct flow_block_cb *block_cb));
742 bool flow_indr_dev_exists(void);
743
744 #endif /* _NET_FLOW_OFFLOAD_H */
745