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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __NET_ACT_API_H #define __NET_ACT_API_H /* * Public action API for classifiers/qdiscs */ #include <net/sch_generic.h> #include <net/pkt_sched.h> #include <net/net_namespace.h> #include <net/netns/generic.h> struct tcf_idrinfo { spinlock_t lock; struct idr action_idr; }; struct tc_action_ops; struct tc_action { const struct tc_action_ops *ops; __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ __u32 order; struct list_head list; struct tcf_idrinfo *idrinfo; u32 tcfa_index; int tcfa_refcnt; int tcfa_bindcnt; u32 tcfa_capab; int tcfa_action; struct tcf_t tcfa_tm; struct gnet_stats_basic_packed tcfa_bstats; struct gnet_stats_queue tcfa_qstats; struct net_rate_estimator __rcu *tcfa_rate_est; spinlock_t tcfa_lock; struct gnet_stats_basic_cpu __percpu *cpu_bstats; struct gnet_stats_queue __percpu *cpu_qstats; struct tc_cookie *act_cookie; struct tcf_chain *goto_chain; }; #define tcf_index common.tcfa_index #define tcf_refcnt common.tcfa_refcnt #define tcf_bindcnt common.tcfa_bindcnt #define tcf_capab common.tcfa_capab #define tcf_action common.tcfa_action #define tcf_tm common.tcfa_tm #define tcf_bstats common.tcfa_bstats #define tcf_qstats common.tcfa_qstats #define tcf_rate_est common.tcfa_rate_est #define tcf_lock common.tcfa_lock /* Update lastuse only if needed, to avoid dirtying a cache line. * We use a temp variable to avoid fetching jiffies twice. */ static inline void tcf_lastuse_update(struct tcf_t *tm) { unsigned long now = jiffies; if (tm->lastuse != now) tm->lastuse = now; if (unlikely(!tm->firstuse)) tm->firstuse = now; } static inline void tcf_tm_dump(struct tcf_t *dtm, const struct tcf_t *stm) { dtm->install = jiffies_to_clock_t(jiffies - stm->install); dtm->lastuse = jiffies_to_clock_t(jiffies - stm->lastuse); dtm->firstuse = jiffies_to_clock_t(jiffies - stm->firstuse); dtm->expires = jiffies_to_clock_t(stm->expires); } #ifdef CONFIG_NET_CLS_ACT #define ACT_P_CREATED 1 #define ACT_P_DELETED 1 struct tc_action_ops { struct list_head head; char kind[IFNAMSIZ]; __u32 type; /* TBD to match kind */ size_t size; struct module *owner; int (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *); int (*dump)(struct sk_buff *, struct tc_action *, int, int); void (*cleanup)(struct tc_action *, int bind); int (*lookup)(struct net *, struct tc_action **, u32); int (*init)(struct net *net, struct nlattr *nla, struct nlattr *est, struct tc_action **act, int ovr, int bind); int (*walk)(struct net *, struct sk_buff *, struct netlink_callback *, int, const struct tc_action_ops *); void (*stats_update)(struct tc_action *, u64, u32, u64); struct net_device *(*get_dev)(const struct tc_action *a); }; struct tc_action_net { struct tcf_idrinfo *idrinfo; const struct tc_action_ops *ops; }; static inline int tc_action_net_init(struct tc_action_net *tn, const struct tc_action_ops *ops) { int err = 0; tn->idrinfo = kmalloc(sizeof(*tn->idrinfo), GFP_KERNEL); if (!tn->idrinfo) return -ENOMEM; tn->ops = ops; spin_lock_init(&tn->idrinfo->lock); idr_init(&tn->idrinfo->action_idr); return err; } void tcf_idrinfo_destroy(const struct tc_action_ops *ops, struct tcf_idrinfo *idrinfo); static inline void tc_action_net_exit(struct tc_action_net *tn) { rtnl_lock(); tcf_idrinfo_destroy(tn->ops, tn->idrinfo); rtnl_unlock(); kfree(tn->idrinfo); } int tcf_generic_walker(struct tc_action_net *tn, struct sk_buff *skb, struct netlink_callback *cb, int type, const struct tc_action_ops *ops); int tcf_idr_search(struct tc_action_net *tn, struct tc_action **a, u32 index); bool tcf_idr_check(struct tc_action_net *tn, u32 index, struct tc_action **a, int bind); int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est, struct tc_action **a, const struct tc_action_ops *ops, int bind, bool cpustats); void tcf_idr_cleanup(struct tc_action *a, struct nlattr *est); void tcf_idr_insert(struct tc_action_net *tn, struct tc_action *a); int __tcf_idr_release(struct tc_action *a, bool bind, bool strict); static inline int tcf_idr_release(struct tc_action *a, bool bind) { return __tcf_idr_release(a, bind, false); } int tcf_register_action(struct tc_action_ops *a, struct pernet_operations *ops); int tcf_unregister_action(struct tc_action_ops *a, struct pernet_operations *ops); int tcf_action_destroy(struct list_head *actions, int bind); int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions, int nr_actions, struct tcf_result *res); int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla, struct nlattr *est, char *name, int ovr, int bind, struct list_head *actions); struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp, struct nlattr *nla, struct nlattr *est, char *name, int ovr, int bind); int tcf_action_dump(struct sk_buff *skb, struct list_head *, int, int); int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int); #endif /* CONFIG_NET_CLS_ACT */ static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes, u64 packets, u64 lastuse) { #ifdef CONFIG_NET_CLS_ACT if (!a->ops->stats_update) return; a->ops->stats_update(a, bytes, packets, lastuse); #endif } typedef int tc_setup_cb_t(enum tc_setup_type type, void *type_data, void *cb_priv); #ifdef CONFIG_NET_CLS_ACT int tc_setup_cb_egdev_register(const struct net_device *dev, tc_setup_cb_t *cb, void *cb_priv); void tc_setup_cb_egdev_unregister(const struct net_device *dev, tc_setup_cb_t *cb, void *cb_priv); int tc_setup_cb_egdev_call(const struct net_device *dev, enum tc_setup_type type, void *type_data, bool err_stop); #else static inline int tc_setup_cb_egdev_register(const struct net_device *dev, tc_setup_cb_t *cb, void *cb_priv) { return 0; } static inline void tc_setup_cb_egdev_unregister(const struct net_device *dev, tc_setup_cb_t *cb, void *cb_priv) { } static inline int tc_setup_cb_egdev_call(const struct net_device *dev, enum tc_setup_type type, void *type_data, bool err_stop) { return 0; } #endif #endif |