1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NET_PKT_CLS_H
3 #define __NET_PKT_CLS_H
5 #include <linux/pkt_cls.h>
6 #include <linux/workqueue.h>
7 #include <net/sch_generic.h>
8 #include <net/act_api.h>
9 #include <net/net_namespace.h>
11 /* TC action not accessible from user space */
12 #define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1)
14 /* Basic packet classifier frontend definitions. */
22 int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *);
25 int register_tcf_proto_ops(struct tcf_proto_ops *ops);
26 int unregister_tcf_proto_ops(struct tcf_proto_ops *ops);
28 struct tcf_block_ext_info {
29 enum flow_block_binder_type binder_type;
30 tcf_chain_head_change_t *chain_head_change;
31 void *chain_head_change_priv;
36 struct tcf_block *block;
37 struct tcf_block_ext_info info;
38 struct tcf_proto __rcu *filter_chain;
42 bool tcf_queue_work(struct rcu_work *rwork, work_func_t func);
45 struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block,
47 void tcf_chain_put_by_act(struct tcf_chain *chain);
48 struct tcf_chain *tcf_get_next_chain(struct tcf_block *block,
49 struct tcf_chain *chain);
50 struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain,
51 struct tcf_proto *tp);
52 void tcf_block_netif_keep_dst(struct tcf_block *block);
53 int tcf_block_get(struct tcf_block **p_block,
54 struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
55 struct netlink_ext_ack *extack);
56 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
57 struct tcf_block_ext_info *ei,
58 struct netlink_ext_ack *extack);
59 void tcf_block_put(struct tcf_block *block);
60 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
61 struct tcf_block_ext_info *ei);
63 static inline bool tcf_block_shared(struct tcf_block *block)
68 static inline bool tcf_block_non_null_shared(struct tcf_block *block)
70 return block && block->index;
73 static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
75 WARN_ON(tcf_block_shared(block));
79 int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
80 struct tcf_result *res, bool compat_mode);
81 int tcf_classify_ingress(struct sk_buff *skb,
82 const struct tcf_block *ingress_block,
83 const struct tcf_proto *tp, struct tcf_result *res,
87 static inline bool tcf_block_shared(struct tcf_block *block)
92 static inline bool tcf_block_non_null_shared(struct tcf_block *block)
98 int tcf_block_get(struct tcf_block **p_block,
99 struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
100 struct netlink_ext_ack *extack)
106 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
107 struct tcf_block_ext_info *ei,
108 struct netlink_ext_ack *extack)
113 static inline void tcf_block_put(struct tcf_block *block)
118 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
119 struct tcf_block_ext_info *ei)
123 static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
129 int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb,
136 void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb,
141 static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
142 struct tcf_result *res, bool compat_mode)
144 return TC_ACT_UNSPEC;
147 static inline int tcf_classify_ingress(struct sk_buff *skb,
148 const struct tcf_block *ingress_block,
149 const struct tcf_proto *tp,
150 struct tcf_result *res, bool compat_mode)
152 return TC_ACT_UNSPEC;
157 static inline unsigned long
158 __cls_set_class(unsigned long *clp, unsigned long cl)
160 return xchg(clp, cl);
164 __tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base)
168 cl = q->ops->cl_ops->bind_tcf(q, base, r->classid);
169 cl = __cls_set_class(&r->class, cl);
171 q->ops->cl_ops->unbind_tcf(q, cl);
175 tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base)
177 struct Qdisc *q = tp->chain->block->q;
179 /* Check q as it is not set for shared blocks. In that case,
180 * setting class is not supported.
185 __tcf_bind_filter(q, r, base);
190 __tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r)
194 if ((cl = __cls_set_class(&r->class, 0)) != 0)
195 q->ops->cl_ops->unbind_tcf(q, cl);
199 tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r)
201 struct Qdisc *q = tp->chain->block->q;
205 __tcf_unbind_filter(q, r);
209 #ifdef CONFIG_NET_CLS_ACT
210 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */
212 struct tc_action **actions;
215 /* Map to export classifier specific extension TLV types to the
216 * generic extensions API. Unsupported extensions must be set to 0.
222 static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net,
223 int action, int police)
225 #ifdef CONFIG_NET_CLS_ACT
227 exts->nr_actions = 0;
229 exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
234 exts->action = action;
235 exts->police = police;
239 /* Return false if the netns is being destroyed in cleanup_net(). Callers
240 * need to do cleanup synchronously in this case, otherwise may race with
241 * tc_action_net_exit(). Return true for other cases.
243 static inline bool tcf_exts_get_net(struct tcf_exts *exts)
245 #ifdef CONFIG_NET_CLS_ACT
246 exts->net = maybe_get_net(exts->net);
247 return exts->net != NULL;
253 static inline void tcf_exts_put_net(struct tcf_exts *exts)
255 #ifdef CONFIG_NET_CLS_ACT
261 #ifdef CONFIG_NET_CLS_ACT
262 #define tcf_exts_for_each_action(i, a, exts) \
263 for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++)
265 #define tcf_exts_for_each_action(i, a, exts) \
266 for (; 0; (void)(i), (void)(a), (void)(exts))
270 tcf_exts_stats_update(const struct tcf_exts *exts,
271 u64 bytes, u64 packets, u64 drops, u64 lastuse,
272 u8 used_hw_stats, bool used_hw_stats_valid)
274 #ifdef CONFIG_NET_CLS_ACT
279 for (i = 0; i < exts->nr_actions; i++) {
280 struct tc_action *a = exts->actions[i];
282 tcf_action_stats_update(a, bytes, packets, drops,
284 a->used_hw_stats = used_hw_stats;
285 a->used_hw_stats_valid = used_hw_stats_valid;
293 * tcf_exts_has_actions - check if at least one action is present
294 * @exts: tc filter extensions handle
296 * Returns true if at least one action is present.
298 static inline bool tcf_exts_has_actions(struct tcf_exts *exts)
300 #ifdef CONFIG_NET_CLS_ACT
301 return exts->nr_actions;
308 * tcf_exts_exec - execute tc filter extensions
309 * @skb: socket buffer
310 * @exts: tc filter extensions handle
311 * @res: desired result
313 * Executes all configured extensions. Returns TC_ACT_OK on a normal execution,
314 * a negative number if the filter must be considered unmatched or
315 * a positive action code (TC_ACT_*) which must be returned to the
319 tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
320 struct tcf_result *res)
322 #ifdef CONFIG_NET_CLS_ACT
323 return tcf_action_exec(skb, exts->actions, exts->nr_actions, res);
328 int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
329 struct nlattr **tb, struct nlattr *rate_tlv,
330 struct tcf_exts *exts, bool ovr, bool rtnl_held,
331 struct netlink_ext_ack *extack);
332 void tcf_exts_destroy(struct tcf_exts *exts);
333 void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src);
334 int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts);
335 int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts);
336 int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts);
339 * struct tcf_pkt_info - packet information
341 struct tcf_pkt_info {
346 #ifdef CONFIG_NET_EMATCH
348 struct tcf_ematch_ops;
351 * struct tcf_ematch - extended match (ematch)
353 * @matchid: identifier to allow userspace to reidentify a match
354 * @flags: flags specifying attributes and the relation to other matches
355 * @ops: the operations lookup table of the corresponding ematch module
356 * @datalen: length of the ematch specific configuration data
357 * @data: ematch specific data
360 struct tcf_ematch_ops * ops;
362 unsigned int datalen;
368 static inline int tcf_em_is_container(struct tcf_ematch *em)
373 static inline int tcf_em_is_simple(struct tcf_ematch *em)
375 return em->flags & TCF_EM_SIMPLE;
378 static inline int tcf_em_is_inverted(struct tcf_ematch *em)
380 return em->flags & TCF_EM_INVERT;
383 static inline int tcf_em_last_match(struct tcf_ematch *em)
385 return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END;
388 static inline int tcf_em_early_end(struct tcf_ematch *em, int result)
390 if (tcf_em_last_match(em))
393 if (result == 0 && em->flags & TCF_EM_REL_AND)
396 if (result != 0 && em->flags & TCF_EM_REL_OR)
403 * struct tcf_ematch_tree - ematch tree handle
405 * @hdr: ematch tree header supplied by userspace
406 * @matches: array of ematches
408 struct tcf_ematch_tree {
409 struct tcf_ematch_tree_hdr hdr;
410 struct tcf_ematch * matches;
415 * struct tcf_ematch_ops - ematch module operations
417 * @kind: identifier (kind) of this ematch module
418 * @datalen: length of expected configuration data (optional)
419 * @change: called during validation (optional)
420 * @match: called during ematch tree evaluation, must return 1/0
421 * @destroy: called during destroyage (optional)
422 * @dump: called during dumping process (optional)
423 * @owner: owner, must be set to THIS_MODULE
424 * @link: link to previous/next ematch module (internal use)
426 struct tcf_ematch_ops {
429 int (*change)(struct net *net, void *,
430 int, struct tcf_ematch *);
431 int (*match)(struct sk_buff *, struct tcf_ematch *,
432 struct tcf_pkt_info *);
433 void (*destroy)(struct tcf_ematch *);
434 int (*dump)(struct sk_buff *, struct tcf_ematch *);
435 struct module *owner;
436 struct list_head link;
439 int tcf_em_register(struct tcf_ematch_ops *);
440 void tcf_em_unregister(struct tcf_ematch_ops *);
441 int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *,
442 struct tcf_ematch_tree *);
443 void tcf_em_tree_destroy(struct tcf_ematch_tree *);
444 int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int);
445 int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *,
446 struct tcf_pkt_info *);
449 * tcf_em_tree_match - evaulate an ematch tree
451 * @skb: socket buffer of the packet in question
452 * @tree: ematch tree to be used for evaluation
453 * @info: packet information examined by classifier
455 * This function matches @skb against the ematch tree in @tree by going
456 * through all ematches respecting their logic relations returning
457 * as soon as the result is obvious.
459 * Returns 1 if the ematch tree as-one matches, no ematches are configured
460 * or ematch is not enabled in the kernel, otherwise 0 is returned.
462 static inline int tcf_em_tree_match(struct sk_buff *skb,
463 struct tcf_ematch_tree *tree,
464 struct tcf_pkt_info *info)
466 if (tree->hdr.nmatches)
467 return __tcf_em_tree_match(skb, tree, info);
472 #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind))
474 #else /* CONFIG_NET_EMATCH */
476 struct tcf_ematch_tree {
479 #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)
480 #define tcf_em_tree_destroy(t) do { (void)(t); } while(0)
481 #define tcf_em_tree_dump(skb, t, tlv) (0)
482 #define tcf_em_tree_match(skb, t, info) ((void)(info), 1)
484 #endif /* CONFIG_NET_EMATCH */
486 static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer)
490 return skb_mac_header(skb);
491 case TCF_LAYER_NETWORK:
492 return skb_network_header(skb);
493 case TCF_LAYER_TRANSPORT:
494 return skb_transport_header(skb);
500 static inline int tcf_valid_offset(const struct sk_buff *skb,
501 const unsigned char *ptr, const int len)
503 return likely((ptr + len) <= skb_tail_pointer(skb) &&
505 (ptr <= (ptr + len)));
509 tcf_change_indev(struct net *net, struct nlattr *indev_tlv,
510 struct netlink_ext_ack *extack)
512 char indev[IFNAMSIZ];
513 struct net_device *dev;
515 if (nla_strscpy(indev, indev_tlv, IFNAMSIZ) < 0) {
516 NL_SET_ERR_MSG_ATTR(extack, indev_tlv,
517 "Interface name too long");
520 dev = __dev_get_by_name(net, indev);
522 NL_SET_ERR_MSG_ATTR(extack, indev_tlv,
523 "Network device not found");
530 tcf_match_indev(struct sk_buff *skb, int ifindex)
536 return ifindex == skb->skb_iif;
539 int tc_setup_flow_action(struct flow_action *flow_action,
540 const struct tcf_exts *exts);
541 void tc_cleanup_flow_action(struct flow_action *flow_action);
543 int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type,
544 void *type_data, bool err_stop, bool rtnl_held);
545 int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp,
546 enum tc_setup_type type, void *type_data, bool err_stop,
547 u32 *flags, unsigned int *in_hw_count, bool rtnl_held);
548 int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp,
549 enum tc_setup_type type, void *type_data, bool err_stop,
550 u32 *old_flags, unsigned int *old_in_hw_count,
551 u32 *new_flags, unsigned int *new_in_hw_count,
553 int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp,
554 enum tc_setup_type type, void *type_data, bool err_stop,
555 u32 *flags, unsigned int *in_hw_count, bool rtnl_held);
556 int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp,
557 bool add, flow_setup_cb_t *cb,
558 enum tc_setup_type type, void *type_data,
559 void *cb_priv, u32 *flags, unsigned int *in_hw_count);
560 unsigned int tcf_exts_num_actions(struct tcf_exts *exts);
562 #ifdef CONFIG_NET_CLS_ACT
563 int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch,
564 enum flow_block_binder_type binder_type,
565 struct nlattr *block_index_attr,
566 struct netlink_ext_ack *extack);
567 void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch);
568 int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr,
569 struct netlink_ext_ack *extack);
570 struct sk_buff *tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb,
571 struct sk_buff **to_free, int *ret);
572 int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe);
574 static inline int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch,
575 enum flow_block_binder_type binder_type,
576 struct nlattr *block_index_attr,
577 struct netlink_ext_ack *extack)
582 static inline void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch)
586 static inline int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr,
587 struct netlink_ext_ack *extack)
592 static inline struct sk_buff *
593 tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb,
594 struct sk_buff **to_free, int *ret)
599 static inline int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe)
605 struct tc_cls_u32_knode {
606 struct tcf_exts *exts;
607 struct tcf_result *res;
608 struct tc_u32_sel *sel;
616 struct tc_cls_u32_hnode {
619 unsigned int divisor;
622 enum tc_clsu32_command {
624 TC_CLSU32_REPLACE_KNODE,
625 TC_CLSU32_DELETE_KNODE,
627 TC_CLSU32_REPLACE_HNODE,
628 TC_CLSU32_DELETE_HNODE,
631 struct tc_cls_u32_offload {
632 struct flow_cls_common_offload common;
634 enum tc_clsu32_command command;
636 struct tc_cls_u32_knode knode;
637 struct tc_cls_u32_hnode hnode;
641 static inline bool tc_can_offload(const struct net_device *dev)
643 return dev->features & NETIF_F_HW_TC;
646 static inline bool tc_can_offload_extack(const struct net_device *dev,
647 struct netlink_ext_ack *extack)
649 bool can = tc_can_offload(dev);
652 NL_SET_ERR_MSG(extack, "TC offload is disabled on net device");
658 tc_cls_can_offload_and_chain0(const struct net_device *dev,
659 struct flow_cls_common_offload *common)
661 if (!tc_can_offload_extack(dev, common->extack))
663 if (common->chain_index) {
664 NL_SET_ERR_MSG(common->extack,
665 "Driver supports only offload of chain 0");
671 static inline bool tc_skip_hw(u32 flags)
673 return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false;
676 static inline bool tc_skip_sw(u32 flags)
678 return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false;
681 /* SKIP_HW and SKIP_SW are mutually exclusive flags. */
682 static inline bool tc_flags_valid(u32 flags)
684 if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW |
685 TCA_CLS_FLAGS_VERBOSE))
688 flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW;
689 if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)))
695 static inline bool tc_in_hw(u32 flags)
697 return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false;
701 tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common,
702 const struct tcf_proto *tp, u32 flags,
703 struct netlink_ext_ack *extack)
705 cls_common->chain_index = tp->chain->index;
706 cls_common->protocol = tp->protocol;
707 cls_common->prio = tp->prio >> 16;
708 if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE)
709 cls_common->extack = extack;
712 enum tc_matchall_command {
713 TC_CLSMATCHALL_REPLACE,
714 TC_CLSMATCHALL_DESTROY,
715 TC_CLSMATCHALL_STATS,
718 struct tc_cls_matchall_offload {
719 struct flow_cls_common_offload common;
720 enum tc_matchall_command command;
721 struct flow_rule *rule;
722 struct flow_stats stats;
723 unsigned long cookie;
726 enum tc_clsbpf_command {
731 struct tc_cls_bpf_offload {
732 struct flow_cls_common_offload common;
733 enum tc_clsbpf_command command;
734 struct tcf_exts *exts;
735 struct bpf_prog *prog;
736 struct bpf_prog *oldprog;
738 bool exts_integrated;
741 struct tc_mqprio_qopt_offload {
742 /* struct tc_mqprio_qopt must always be the first element */
743 struct tc_mqprio_qopt qopt;
747 u64 min_rate[TC_QOPT_MAX_QUEUE];
748 u64 max_rate[TC_QOPT_MAX_QUEUE];
751 /* This structure holds cookie structure that is passed from user
752 * to the kernel for actions and classifiers
760 struct tc_qopt_offload_stats {
761 struct gnet_stats_basic_packed *bstats;
762 struct gnet_stats_queue *qstats;
772 struct tc_mq_opt_offload_graft_params {
777 struct tc_mq_qopt_offload {
778 enum tc_mq_command command;
781 struct tc_qopt_offload_stats stats;
782 struct tc_mq_opt_offload_graft_params graft_params;
786 enum tc_red_command {
794 struct tc_red_qopt_offload_params {
802 struct gnet_stats_queue *qstats;
805 struct tc_red_qopt_offload {
806 enum tc_red_command command;
810 struct tc_red_qopt_offload_params set;
811 struct tc_qopt_offload_stats stats;
812 struct red_stats *xstats;
817 enum tc_gred_command {
823 struct tc_gred_vq_qopt_offload_params {
832 /* Only need backlog, see struct tc_prio_qopt_offload_params */
836 struct tc_gred_qopt_offload_params {
841 struct gnet_stats_queue *qstats;
842 struct tc_gred_vq_qopt_offload_params tab[MAX_DPs];
845 struct tc_gred_qopt_offload_stats {
846 struct gnet_stats_basic_packed bstats[MAX_DPs];
847 struct gnet_stats_queue qstats[MAX_DPs];
848 struct red_stats *xstats[MAX_DPs];
851 struct tc_gred_qopt_offload {
852 enum tc_gred_command command;
856 struct tc_gred_qopt_offload_params set;
857 struct tc_gred_qopt_offload_stats stats;
861 enum tc_prio_command {
868 struct tc_prio_qopt_offload_params {
870 u8 priomap[TC_PRIO_MAX + 1];
871 /* At the point of un-offloading the Qdisc, the reported backlog and
872 * qlen need to be reduced by the portion that is in HW.
874 struct gnet_stats_queue *qstats;
877 struct tc_prio_qopt_offload_graft_params {
882 struct tc_prio_qopt_offload {
883 enum tc_prio_command command;
887 struct tc_prio_qopt_offload_params replace_params;
888 struct tc_qopt_offload_stats stats;
889 struct tc_prio_qopt_offload_graft_params graft_params;
893 enum tc_root_command {
897 struct tc_root_qopt_offload {
898 enum tc_root_command command;
903 enum tc_ets_command {
910 struct tc_ets_qopt_offload_replace_params {
912 u8 priomap[TC_PRIO_MAX + 1];
913 unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */
914 unsigned int weights[TCQ_ETS_MAX_BANDS];
915 struct gnet_stats_queue *qstats;
918 struct tc_ets_qopt_offload_graft_params {
923 struct tc_ets_qopt_offload {
924 enum tc_ets_command command;
928 struct tc_ets_qopt_offload_replace_params replace_params;
929 struct tc_qopt_offload_stats stats;
930 struct tc_ets_qopt_offload_graft_params graft_params;
934 enum tc_tbf_command {
940 struct tc_tbf_qopt_offload_replace_params {
941 struct psched_ratecfg rate;
943 struct gnet_stats_queue *qstats;
946 struct tc_tbf_qopt_offload {
947 enum tc_tbf_command command;
951 struct tc_tbf_qopt_offload_replace_params replace_params;
952 struct tc_qopt_offload_stats stats;
956 enum tc_fifo_command {
962 struct tc_fifo_qopt_offload {
963 enum tc_fifo_command command;
967 struct tc_qopt_offload_stats stats;