From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- include/net/pkt_cls.h | 1069 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1069 insertions(+) create mode 100644 include/net/pkt_cls.h (limited to 'include/net/pkt_cls.h') diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h new file mode 100644 index 000000000..4cabb32a2 --- /dev/null +++ b/include/net/pkt_cls.h @@ -0,0 +1,1069 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __NET_PKT_CLS_H +#define __NET_PKT_CLS_H + +#include +#include +#include +#include +#include + +/* TC action not accessible from user space */ +#define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1) + +/* Basic packet classifier frontend definitions. */ + +struct tcf_walker { + int stop; + int skip; + int count; + bool nonempty; + unsigned long cookie; + int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); +}; + +int register_tcf_proto_ops(struct tcf_proto_ops *ops); +void unregister_tcf_proto_ops(struct tcf_proto_ops *ops); + +struct tcf_block_ext_info { + enum flow_block_binder_type binder_type; + tcf_chain_head_change_t *chain_head_change; + void *chain_head_change_priv; + u32 block_index; +}; + +struct tcf_qevent { + struct tcf_block *block; + struct tcf_block_ext_info info; + struct tcf_proto __rcu *filter_chain; +}; + +struct tcf_block_cb; +bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); + +#ifdef CONFIG_NET_CLS +struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, + u32 chain_index); +void tcf_chain_put_by_act(struct tcf_chain *chain); +struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, + struct tcf_chain *chain); +struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, + struct tcf_proto *tp); +void tcf_block_netif_keep_dst(struct tcf_block *block); +int tcf_block_get(struct tcf_block **p_block, + struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, + struct netlink_ext_ack *extack); +int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, + struct tcf_block_ext_info *ei, + struct netlink_ext_ack *extack); +void tcf_block_put(struct tcf_block *block); +void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, + struct tcf_block_ext_info *ei); + +static inline bool tcf_block_shared(struct tcf_block *block) +{ + return block->index; +} + +static inline bool tcf_block_non_null_shared(struct tcf_block *block) +{ + return block && block->index; +} + +static inline struct Qdisc *tcf_block_q(struct tcf_block *block) +{ + WARN_ON(tcf_block_shared(block)); + return block->q; +} + +int tcf_classify(struct sk_buff *skb, + const struct tcf_block *block, + const struct tcf_proto *tp, struct tcf_result *res, + bool compat_mode); + +static inline bool tc_cls_stats_dump(struct tcf_proto *tp, + struct tcf_walker *arg, + void *filter) +{ + if (arg->count >= arg->skip && arg->fn(tp, filter, arg) < 0) { + arg->stop = 1; + return false; + } + + arg->count++; + return true; +} + +#else +static inline bool tcf_block_shared(struct tcf_block *block) +{ + return false; +} + +static inline bool tcf_block_non_null_shared(struct tcf_block *block) +{ + return false; +} + +static inline +int tcf_block_get(struct tcf_block **p_block, + struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, + struct netlink_ext_ack *extack) +{ + return 0; +} + +static inline +int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, + struct tcf_block_ext_info *ei, + struct netlink_ext_ack *extack) +{ + return 0; +} + +static inline void tcf_block_put(struct tcf_block *block) +{ +} + +static inline +void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, + struct tcf_block_ext_info *ei) +{ +} + +static inline struct Qdisc *tcf_block_q(struct tcf_block *block) +{ + return NULL; +} + +static inline +int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, + void *cb_priv) +{ + return 0; +} + +static inline +void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, + void *cb_priv) +{ +} + +static inline int tcf_classify(struct sk_buff *skb, + const struct tcf_block *block, + const struct tcf_proto *tp, + struct tcf_result *res, bool compat_mode) +{ + return TC_ACT_UNSPEC; +} + +#endif + +static inline unsigned long +__cls_set_class(unsigned long *clp, unsigned long cl) +{ + return xchg(clp, cl); +} + +static inline void +__tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base) +{ + unsigned long cl; + + cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); + cl = __cls_set_class(&r->class, cl); + if (cl) + q->ops->cl_ops->unbind_tcf(q, cl); +} + +static inline void +tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) +{ + struct Qdisc *q = tp->chain->block->q; + + /* Check q as it is not set for shared blocks. In that case, + * setting class is not supported. + */ + if (!q) + return; + sch_tree_lock(q); + __tcf_bind_filter(q, r, base); + sch_tree_unlock(q); +} + +static inline void +__tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r) +{ + unsigned long cl; + + if ((cl = __cls_set_class(&r->class, 0)) != 0) + q->ops->cl_ops->unbind_tcf(q, cl); +} + +static inline void +tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) +{ + struct Qdisc *q = tp->chain->block->q; + + if (!q) + return; + __tcf_unbind_filter(q, r); +} + +static inline void tc_cls_bind_class(u32 classid, unsigned long cl, + void *q, struct tcf_result *res, + unsigned long base) +{ + if (res->classid == classid) { + if (cl) + __tcf_bind_filter(q, res, base); + else + __tcf_unbind_filter(q, res); + } +} + +struct tcf_exts { +#ifdef CONFIG_NET_CLS_ACT + __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ + int nr_actions; + struct tc_action **actions; + struct net *net; + netns_tracker ns_tracker; +#endif + /* Map to export classifier specific extension TLV types to the + * generic extensions API. Unsupported extensions must be set to 0. + */ + int action; + int police; +}; + +static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, + int action, int police) +{ +#ifdef CONFIG_NET_CLS_ACT + exts->type = 0; + exts->nr_actions = 0; + /* Note: we do not own yet a reference on net. + * This reference might be taken later from tcf_exts_get_net(). + */ + exts->net = net; + exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), + GFP_KERNEL); + if (!exts->actions) + return -ENOMEM; +#endif + exts->action = action; + exts->police = police; + return 0; +} + +/* Return false if the netns is being destroyed in cleanup_net(). Callers + * need to do cleanup synchronously in this case, otherwise may race with + * tc_action_net_exit(). Return true for other cases. + */ +static inline bool tcf_exts_get_net(struct tcf_exts *exts) +{ +#ifdef CONFIG_NET_CLS_ACT + exts->net = maybe_get_net(exts->net); + if (exts->net) + netns_tracker_alloc(exts->net, &exts->ns_tracker, GFP_KERNEL); + return exts->net != NULL; +#else + return true; +#endif +} + +static inline void tcf_exts_put_net(struct tcf_exts *exts) +{ +#ifdef CONFIG_NET_CLS_ACT + if (exts->net) + put_net_track(exts->net, &exts->ns_tracker); +#endif +} + +#ifdef CONFIG_NET_CLS_ACT +#define tcf_exts_for_each_action(i, a, exts) \ + for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) +#else +#define tcf_exts_for_each_action(i, a, exts) \ + for (; 0; (void)(i), (void)(a), (void)(exts)) +#endif + +#define tcf_act_for_each_action(i, a, actions) \ + for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = actions[i]); i++) + +static inline void +tcf_exts_hw_stats_update(const struct tcf_exts *exts, + u64 bytes, u64 packets, u64 drops, u64 lastuse, + u8 used_hw_stats, bool used_hw_stats_valid) +{ +#ifdef CONFIG_NET_CLS_ACT + int i; + + for (i = 0; i < exts->nr_actions; i++) { + struct tc_action *a = exts->actions[i]; + + /* if stats from hw, just skip */ + if (tcf_action_update_hw_stats(a)) { + preempt_disable(); + tcf_action_stats_update(a, bytes, packets, drops, + lastuse, true); + preempt_enable(); + + a->used_hw_stats = used_hw_stats; + a->used_hw_stats_valid = used_hw_stats_valid; + } + } +#endif +} + +/** + * tcf_exts_has_actions - check if at least one action is present + * @exts: tc filter extensions handle + * + * Returns true if at least one action is present. + */ +static inline bool tcf_exts_has_actions(struct tcf_exts *exts) +{ +#ifdef CONFIG_NET_CLS_ACT + return exts->nr_actions; +#else + return false; +#endif +} + +/** + * tcf_exts_exec - execute tc filter extensions + * @skb: socket buffer + * @exts: tc filter extensions handle + * @res: desired result + * + * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, + * a negative number if the filter must be considered unmatched or + * a positive action code (TC_ACT_*) which must be returned to the + * underlying layer. + */ +static inline int +tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, + struct tcf_result *res) +{ +#ifdef CONFIG_NET_CLS_ACT + return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); +#endif + return TC_ACT_OK; +} + +int tcf_exts_validate(struct net *net, struct tcf_proto *tp, + struct nlattr **tb, struct nlattr *rate_tlv, + struct tcf_exts *exts, u32 flags, + struct netlink_ext_ack *extack); +int tcf_exts_validate_ex(struct net *net, struct tcf_proto *tp, struct nlattr **tb, + struct nlattr *rate_tlv, struct tcf_exts *exts, + u32 flags, u32 fl_flags, struct netlink_ext_ack *extack); +void tcf_exts_destroy(struct tcf_exts *exts); +void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); +int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); +int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts); +int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); + +/** + * struct tcf_pkt_info - packet information + * + * @ptr: start of the pkt data + * @nexthdr: offset of the next header + */ +struct tcf_pkt_info { + unsigned char * ptr; + int nexthdr; +}; + +#ifdef CONFIG_NET_EMATCH + +struct tcf_ematch_ops; + +/** + * struct tcf_ematch - extended match (ematch) + * + * @matchid: identifier to allow userspace to reidentify a match + * @flags: flags specifying attributes and the relation to other matches + * @ops: the operations lookup table of the corresponding ematch module + * @datalen: length of the ematch specific configuration data + * @data: ematch specific data + * @net: the network namespace + */ +struct tcf_ematch { + struct tcf_ematch_ops * ops; + unsigned long data; + unsigned int datalen; + u16 matchid; + u16 flags; + struct net *net; +}; + +static inline int tcf_em_is_container(struct tcf_ematch *em) +{ + return !em->ops; +} + +static inline int tcf_em_is_simple(struct tcf_ematch *em) +{ + return em->flags & TCF_EM_SIMPLE; +} + +static inline int tcf_em_is_inverted(struct tcf_ematch *em) +{ + return em->flags & TCF_EM_INVERT; +} + +static inline int tcf_em_last_match(struct tcf_ematch *em) +{ + return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; +} + +static inline int tcf_em_early_end(struct tcf_ematch *em, int result) +{ + if (tcf_em_last_match(em)) + return 1; + + if (result == 0 && em->flags & TCF_EM_REL_AND) + return 1; + + if (result != 0 && em->flags & TCF_EM_REL_OR) + return 1; + + return 0; +} + +/** + * struct tcf_ematch_tree - ematch tree handle + * + * @hdr: ematch tree header supplied by userspace + * @matches: array of ematches + */ +struct tcf_ematch_tree { + struct tcf_ematch_tree_hdr hdr; + struct tcf_ematch * matches; + +}; + +/** + * struct tcf_ematch_ops - ematch module operations + * + * @kind: identifier (kind) of this ematch module + * @datalen: length of expected configuration data (optional) + * @change: called during validation (optional) + * @match: called during ematch tree evaluation, must return 1/0 + * @destroy: called during destroyage (optional) + * @dump: called during dumping process (optional) + * @owner: owner, must be set to THIS_MODULE + * @link: link to previous/next ematch module (internal use) + */ +struct tcf_ematch_ops { + int kind; + int datalen; + int (*change)(struct net *net, void *, + int, struct tcf_ematch *); + int (*match)(struct sk_buff *, struct tcf_ematch *, + struct tcf_pkt_info *); + void (*destroy)(struct tcf_ematch *); + int (*dump)(struct sk_buff *, struct tcf_ematch *); + struct module *owner; + struct list_head link; +}; + +int tcf_em_register(struct tcf_ematch_ops *); +void tcf_em_unregister(struct tcf_ematch_ops *); +int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, + struct tcf_ematch_tree *); +void tcf_em_tree_destroy(struct tcf_ematch_tree *); +int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); +int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, + struct tcf_pkt_info *); + +/** + * tcf_em_tree_match - evaulate an ematch tree + * + * @skb: socket buffer of the packet in question + * @tree: ematch tree to be used for evaluation + * @info: packet information examined by classifier + * + * This function matches @skb against the ematch tree in @tree by going + * through all ematches respecting their logic relations returning + * as soon as the result is obvious. + * + * Returns 1 if the ematch tree as-one matches, no ematches are configured + * or ematch is not enabled in the kernel, otherwise 0 is returned. + */ +static inline int tcf_em_tree_match(struct sk_buff *skb, + struct tcf_ematch_tree *tree, + struct tcf_pkt_info *info) +{ + if (tree->hdr.nmatches) + return __tcf_em_tree_match(skb, tree, info); + else + return 1; +} + +#define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) + +#else /* CONFIG_NET_EMATCH */ + +struct tcf_ematch_tree { +}; + +#define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) +#define tcf_em_tree_destroy(t) do { (void)(t); } while(0) +#define tcf_em_tree_dump(skb, t, tlv) (0) +#define tcf_em_tree_match(skb, t, info) ((void)(info), 1) + +#endif /* CONFIG_NET_EMATCH */ + +static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) +{ + switch (layer) { + case TCF_LAYER_LINK: + return skb_mac_header(skb); + case TCF_LAYER_NETWORK: + return skb_network_header(skb); + case TCF_LAYER_TRANSPORT: + return skb_transport_header(skb); + } + + return NULL; +} + +static inline int tcf_valid_offset(const struct sk_buff *skb, + const unsigned char *ptr, const int len) +{ + return likely((ptr + len) <= skb_tail_pointer(skb) && + ptr >= skb->head && + (ptr <= (ptr + len))); +} + +static inline int +tcf_change_indev(struct net *net, struct nlattr *indev_tlv, + struct netlink_ext_ack *extack) +{ + char indev[IFNAMSIZ]; + struct net_device *dev; + + if (nla_strscpy(indev, indev_tlv, IFNAMSIZ) < 0) { + NL_SET_ERR_MSG_ATTR(extack, indev_tlv, + "Interface name too long"); + return -EINVAL; + } + dev = __dev_get_by_name(net, indev); + if (!dev) { + NL_SET_ERR_MSG_ATTR(extack, indev_tlv, + "Network device not found"); + return -ENODEV; + } + return dev->ifindex; +} + +static inline bool +tcf_match_indev(struct sk_buff *skb, int ifindex) +{ + if (!ifindex) + return true; + if (!skb->skb_iif) + return false; + return ifindex == skb->skb_iif; +} + +int tc_setup_offload_action(struct flow_action *flow_action, + const struct tcf_exts *exts, + struct netlink_ext_ack *extack); +void tc_cleanup_offload_action(struct flow_action *flow_action); +int tc_setup_action(struct flow_action *flow_action, + struct tc_action *actions[], + struct netlink_ext_ack *extack); + +int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, + void *type_data, bool err_stop, bool rtnl_held); +int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp, + enum tc_setup_type type, void *type_data, bool err_stop, + u32 *flags, unsigned int *in_hw_count, bool rtnl_held); +int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp, + enum tc_setup_type type, void *type_data, bool err_stop, + u32 *old_flags, unsigned int *old_in_hw_count, + u32 *new_flags, unsigned int *new_in_hw_count, + bool rtnl_held); +int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp, + enum tc_setup_type type, void *type_data, bool err_stop, + u32 *flags, unsigned int *in_hw_count, bool rtnl_held); +int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp, + bool add, flow_setup_cb_t *cb, + enum tc_setup_type type, void *type_data, + void *cb_priv, u32 *flags, unsigned int *in_hw_count); +unsigned int tcf_exts_num_actions(struct tcf_exts *exts); + +#ifdef CONFIG_NET_CLS_ACT +int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, + enum flow_block_binder_type binder_type, + struct nlattr *block_index_attr, + struct netlink_ext_ack *extack); +void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch); +int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, + struct netlink_ext_ack *extack); +struct sk_buff *tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, + struct sk_buff **to_free, int *ret); +int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe); +#else +static inline int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, + enum flow_block_binder_type binder_type, + struct nlattr *block_index_attr, + struct netlink_ext_ack *extack) +{ + return 0; +} + +static inline void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch) +{ +} + +static inline int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, + struct netlink_ext_ack *extack) +{ + return 0; +} + +static inline struct sk_buff * +tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, + struct sk_buff **to_free, int *ret) +{ + return skb; +} + +static inline int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe) +{ + return 0; +} +#endif + +struct tc_cls_u32_knode { + struct tcf_exts *exts; + struct tcf_result *res; + struct tc_u32_sel *sel; + u32 handle; + u32 val; + u32 mask; + u32 link_handle; + u8 fshift; +}; + +struct tc_cls_u32_hnode { + u32 handle; + u32 prio; + unsigned int divisor; +}; + +enum tc_clsu32_command { + TC_CLSU32_NEW_KNODE, + TC_CLSU32_REPLACE_KNODE, + TC_CLSU32_DELETE_KNODE, + TC_CLSU32_NEW_HNODE, + TC_CLSU32_REPLACE_HNODE, + TC_CLSU32_DELETE_HNODE, +}; + +struct tc_cls_u32_offload { + struct flow_cls_common_offload common; + /* knode values */ + enum tc_clsu32_command command; + union { + struct tc_cls_u32_knode knode; + struct tc_cls_u32_hnode hnode; + }; +}; + +static inline bool tc_can_offload(const struct net_device *dev) +{ + return dev->features & NETIF_F_HW_TC; +} + +static inline bool tc_can_offload_extack(const struct net_device *dev, + struct netlink_ext_ack *extack) +{ + bool can = tc_can_offload(dev); + + if (!can) + NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); + + return can; +} + +static inline bool +tc_cls_can_offload_and_chain0(const struct net_device *dev, + struct flow_cls_common_offload *common) +{ + if (!tc_can_offload_extack(dev, common->extack)) + return false; + if (common->chain_index) { + NL_SET_ERR_MSG(common->extack, + "Driver supports only offload of chain 0"); + return false; + } + return true; +} + +static inline bool tc_skip_hw(u32 flags) +{ + return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; +} + +static inline bool tc_skip_sw(u32 flags) +{ + return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; +} + +/* SKIP_HW and SKIP_SW are mutually exclusive flags. */ +static inline bool tc_flags_valid(u32 flags) +{ + if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | + TCA_CLS_FLAGS_VERBOSE)) + return false; + + flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; + if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) + return false; + + return true; +} + +static inline bool tc_in_hw(u32 flags) +{ + return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; +} + +static inline void +tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, + const struct tcf_proto *tp, u32 flags, + struct netlink_ext_ack *extack) +{ + cls_common->chain_index = tp->chain->index; + cls_common->protocol = tp->protocol; + cls_common->prio = tp->prio >> 16; + if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) + cls_common->extack = extack; +} + +#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT) +static inline struct tc_skb_ext *tc_skb_ext_alloc(struct sk_buff *skb) +{ + struct tc_skb_ext *tc_skb_ext = skb_ext_add(skb, TC_SKB_EXT); + + if (tc_skb_ext) + memset(tc_skb_ext, 0, sizeof(*tc_skb_ext)); + return tc_skb_ext; +} +#endif + +enum tc_matchall_command { + TC_CLSMATCHALL_REPLACE, + TC_CLSMATCHALL_DESTROY, + TC_CLSMATCHALL_STATS, +}; + +struct tc_cls_matchall_offload { + struct flow_cls_common_offload common; + enum tc_matchall_command command; + struct flow_rule *rule; + struct flow_stats stats; + unsigned long cookie; +}; + +enum tc_clsbpf_command { + TC_CLSBPF_OFFLOAD, + TC_CLSBPF_STATS, +}; + +struct tc_cls_bpf_offload { + struct flow_cls_common_offload common; + enum tc_clsbpf_command command; + struct tcf_exts *exts; + struct bpf_prog *prog; + struct bpf_prog *oldprog; + const char *name; + bool exts_integrated; +}; + +struct tc_mqprio_qopt_offload { + /* struct tc_mqprio_qopt must always be the first element */ + struct tc_mqprio_qopt qopt; + u16 mode; + u16 shaper; + u32 flags; + u64 min_rate[TC_QOPT_MAX_QUEUE]; + u64 max_rate[TC_QOPT_MAX_QUEUE]; +}; + +/* This structure holds cookie structure that is passed from user + * to the kernel for actions and classifiers + */ +struct tc_cookie { + u8 *data; + u32 len; + struct rcu_head rcu; +}; + +struct tc_qopt_offload_stats { + struct gnet_stats_basic_sync *bstats; + struct gnet_stats_queue *qstats; +}; + +enum tc_mq_command { + TC_MQ_CREATE, + TC_MQ_DESTROY, + TC_MQ_STATS, + TC_MQ_GRAFT, +}; + +struct tc_mq_opt_offload_graft_params { + unsigned long queue; + u32 child_handle; +}; + +struct tc_mq_qopt_offload { + enum tc_mq_command command; + u32 handle; + union { + struct tc_qopt_offload_stats stats; + struct tc_mq_opt_offload_graft_params graft_params; + }; +}; + +enum tc_htb_command { + /* Root */ + TC_HTB_CREATE, /* Initialize HTB offload. */ + TC_HTB_DESTROY, /* Destroy HTB offload. */ + + /* Classes */ + /* Allocate qid and create leaf. */ + TC_HTB_LEAF_ALLOC_QUEUE, + /* Convert leaf to inner, preserve and return qid, create new leaf. */ + TC_HTB_LEAF_TO_INNER, + /* Delete leaf, while siblings remain. */ + TC_HTB_LEAF_DEL, + /* Delete leaf, convert parent to leaf, preserving qid. */ + TC_HTB_LEAF_DEL_LAST, + /* TC_HTB_LEAF_DEL_LAST, but delete driver data on hardware errors. */ + TC_HTB_LEAF_DEL_LAST_FORCE, + /* Modify parameters of a node. */ + TC_HTB_NODE_MODIFY, + + /* Class qdisc */ + TC_HTB_LEAF_QUERY_QUEUE, /* Query qid by classid. */ +}; + +struct tc_htb_qopt_offload { + struct netlink_ext_ack *extack; + enum tc_htb_command command; + u32 parent_classid; + u16 classid; + u16 qid; + u64 rate; + u64 ceil; +}; + +#define TC_HTB_CLASSID_ROOT U32_MAX + +enum tc_red_command { + TC_RED_REPLACE, + TC_RED_DESTROY, + TC_RED_STATS, + TC_RED_XSTATS, + TC_RED_GRAFT, +}; + +struct tc_red_qopt_offload_params { + u32 min; + u32 max; + u32 probability; + u32 limit; + bool is_ecn; + bool is_harddrop; + bool is_nodrop; + struct gnet_stats_queue *qstats; +}; + +struct tc_red_qopt_offload { + enum tc_red_command command; + u32 handle; + u32 parent; + union { + struct tc_red_qopt_offload_params set; + struct tc_qopt_offload_stats stats; + struct red_stats *xstats; + u32 child_handle; + }; +}; + +enum tc_gred_command { + TC_GRED_REPLACE, + TC_GRED_DESTROY, + TC_GRED_STATS, +}; + +struct tc_gred_vq_qopt_offload_params { + bool present; + u32 limit; + u32 prio; + u32 min; + u32 max; + bool is_ecn; + bool is_harddrop; + u32 probability; + /* Only need backlog, see struct tc_prio_qopt_offload_params */ + u32 *backlog; +}; + +struct tc_gred_qopt_offload_params { + bool grio_on; + bool wred_on; + unsigned int dp_cnt; + unsigned int dp_def; + struct gnet_stats_queue *qstats; + struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; +}; + +struct tc_gred_qopt_offload_stats { + struct gnet_stats_basic_sync bstats[MAX_DPs]; + struct gnet_stats_queue qstats[MAX_DPs]; + struct red_stats *xstats[MAX_DPs]; +}; + +struct tc_gred_qopt_offload { + enum tc_gred_command command; + u32 handle; + u32 parent; + union { + struct tc_gred_qopt_offload_params set; + struct tc_gred_qopt_offload_stats stats; + }; +}; + +enum tc_prio_command { + TC_PRIO_REPLACE, + TC_PRIO_DESTROY, + TC_PRIO_STATS, + TC_PRIO_GRAFT, +}; + +struct tc_prio_qopt_offload_params { + int bands; + u8 priomap[TC_PRIO_MAX + 1]; + /* At the point of un-offloading the Qdisc, the reported backlog and + * qlen need to be reduced by the portion that is in HW. + */ + struct gnet_stats_queue *qstats; +}; + +struct tc_prio_qopt_offload_graft_params { + u8 band; + u32 child_handle; +}; + +struct tc_prio_qopt_offload { + enum tc_prio_command command; + u32 handle; + u32 parent; + union { + struct tc_prio_qopt_offload_params replace_params; + struct tc_qopt_offload_stats stats; + struct tc_prio_qopt_offload_graft_params graft_params; + }; +}; + +enum tc_root_command { + TC_ROOT_GRAFT, +}; + +struct tc_root_qopt_offload { + enum tc_root_command command; + u32 handle; + bool ingress; +}; + +enum tc_ets_command { + TC_ETS_REPLACE, + TC_ETS_DESTROY, + TC_ETS_STATS, + TC_ETS_GRAFT, +}; + +struct tc_ets_qopt_offload_replace_params { + unsigned int bands; + u8 priomap[TC_PRIO_MAX + 1]; + unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ + unsigned int weights[TCQ_ETS_MAX_BANDS]; + struct gnet_stats_queue *qstats; +}; + +struct tc_ets_qopt_offload_graft_params { + u8 band; + u32 child_handle; +}; + +struct tc_ets_qopt_offload { + enum tc_ets_command command; + u32 handle; + u32 parent; + union { + struct tc_ets_qopt_offload_replace_params replace_params; + struct tc_qopt_offload_stats stats; + struct tc_ets_qopt_offload_graft_params graft_params; + }; +}; + +enum tc_tbf_command { + TC_TBF_REPLACE, + TC_TBF_DESTROY, + TC_TBF_STATS, + TC_TBF_GRAFT, +}; + +struct tc_tbf_qopt_offload_replace_params { + struct psched_ratecfg rate; + u32 max_size; + struct gnet_stats_queue *qstats; +}; + +struct tc_tbf_qopt_offload { + enum tc_tbf_command command; + u32 handle; + u32 parent; + union { + struct tc_tbf_qopt_offload_replace_params replace_params; + struct tc_qopt_offload_stats stats; + u32 child_handle; + }; +}; + +enum tc_fifo_command { + TC_FIFO_REPLACE, + TC_FIFO_DESTROY, + TC_FIFO_STATS, +}; + +struct tc_fifo_qopt_offload { + enum tc_fifo_command command; + u32 handle; + u32 parent; + union { + struct tc_qopt_offload_stats stats; + }; +}; + +#ifdef CONFIG_NET_CLS_ACT +DECLARE_STATIC_KEY_FALSE(tc_skb_ext_tc); +void tc_skb_ext_tc_enable(void); +void tc_skb_ext_tc_disable(void); +#define tc_skb_ext_tc_enabled() static_branch_unlikely(&tc_skb_ext_tc) +#else /* CONFIG_NET_CLS_ACT */ +static inline void tc_skb_ext_tc_enable(void) { } +static inline void tc_skb_ext_tc_disable(void) { } +#define tc_skb_ext_tc_enabled() false +#endif + +#endif -- cgit v1.2.3