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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef __NET_ACT_API_H |
3 | #define __NET_ACT_API_H | |
4 | ||
5 | /* | |
0b0f43fe JHS |
6 | * Public action API for classifiers/qdiscs |
7 | */ | |
1da177e4 LT |
8 | |
9 | #include <net/sch_generic.h> | |
10 | #include <net/pkt_sched.h> | |
ddf97ccd WC |
11 | #include <net/net_namespace.h> |
12 | #include <net/netns/generic.h> | |
1da177e4 | 13 | |
65a206c0 CM |
14 | struct tcf_idrinfo { |
15 | spinlock_t lock; | |
16 | struct idr action_idr; | |
a85a970a WC |
17 | }; |
18 | ||
19 | struct tc_action_ops; | |
20 | ||
21 | struct tc_action { | |
22 | const struct tc_action_ops *ops; | |
ec0595cc WC |
23 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
24 | __u32 order; | |
25 | struct list_head list; | |
65a206c0 | 26 | struct tcf_idrinfo *idrinfo; |
a85a970a | 27 | |
ec0595cc WC |
28 | u32 tcfa_index; |
29 | int tcfa_refcnt; | |
30 | int tcfa_bindcnt; | |
31 | u32 tcfa_capab; | |
32 | int tcfa_action; | |
33 | struct tcf_t tcfa_tm; | |
34 | struct gnet_stats_basic_packed tcfa_bstats; | |
35 | struct gnet_stats_queue tcfa_qstats; | |
1c0d32fd | 36 | struct net_rate_estimator __rcu *tcfa_rate_est; |
ec0595cc | 37 | spinlock_t tcfa_lock; |
519c818e ED |
38 | struct gnet_stats_basic_cpu __percpu *cpu_bstats; |
39 | struct gnet_stats_queue __percpu *cpu_qstats; | |
1045ba77 | 40 | struct tc_cookie *act_cookie; |
db50514f | 41 | struct tcf_chain *goto_chain; |
e9ce1cd3 | 42 | }; |
ec0595cc WC |
43 | #define tcf_index common.tcfa_index |
44 | #define tcf_refcnt common.tcfa_refcnt | |
45 | #define tcf_bindcnt common.tcfa_bindcnt | |
46 | #define tcf_capab common.tcfa_capab | |
47 | #define tcf_action common.tcfa_action | |
48 | #define tcf_tm common.tcfa_tm | |
49 | #define tcf_bstats common.tcfa_bstats | |
50 | #define tcf_qstats common.tcfa_qstats | |
51 | #define tcf_rate_est common.tcfa_rate_est | |
52 | #define tcf_lock common.tcfa_lock | |
e9ce1cd3 | 53 | |
56e5d1ca ED |
54 | /* Update lastuse only if needed, to avoid dirtying a cache line. |
55 | * We use a temp variable to avoid fetching jiffies twice. | |
56 | */ | |
57 | static inline void tcf_lastuse_update(struct tcf_t *tm) | |
58 | { | |
59 | unsigned long now = jiffies; | |
60 | ||
61 | if (tm->lastuse != now) | |
62 | tm->lastuse = now; | |
53eb440f JHS |
63 | if (unlikely(!tm->firstuse)) |
64 | tm->firstuse = now; | |
56e5d1ca ED |
65 | } |
66 | ||
48d8ee16 JHS |
67 | static inline void tcf_tm_dump(struct tcf_t *dtm, const struct tcf_t *stm) |
68 | { | |
69 | dtm->install = jiffies_to_clock_t(jiffies - stm->install); | |
70 | dtm->lastuse = jiffies_to_clock_t(jiffies - stm->lastuse); | |
71 | dtm->firstuse = jiffies_to_clock_t(jiffies - stm->firstuse); | |
72 | dtm->expires = jiffies_to_clock_t(stm->expires); | |
73 | } | |
74 | ||
00175aec AV |
75 | #ifdef CONFIG_NET_CLS_ACT |
76 | ||
77 | #define ACT_P_CREATED 1 | |
78 | #define ACT_P_DELETED 1 | |
79 | ||
e9ce1cd3 | 80 | struct tc_action_ops { |
1f747c26 | 81 | struct list_head head; |
1da177e4 LT |
82 | char kind[IFNAMSIZ]; |
83 | __u32 type; /* TBD to match kind */ | |
a85a970a | 84 | size_t size; |
1da177e4 | 85 | struct module *owner; |
0b0f43fe JHS |
86 | int (*act)(struct sk_buff *, const struct tc_action *, |
87 | struct tcf_result *); | |
e9ce1cd3 | 88 | int (*dump)(struct sk_buff *, struct tc_action *, int, int); |
a5b5c958 | 89 | void (*cleanup)(struct tc_action *, int bind); |
a85a970a | 90 | int (*lookup)(struct net *, struct tc_action **, u32); |
c1b52739 | 91 | int (*init)(struct net *net, struct nlattr *nla, |
a85a970a | 92 | struct nlattr *est, struct tc_action **act, int ovr, |
c1b52739 | 93 | int bind); |
ddf97ccd | 94 | int (*walk)(struct net *, struct sk_buff *, |
a85a970a | 95 | struct netlink_callback *, int, const struct tc_action_ops *); |
38040702 | 96 | void (*stats_update)(struct tc_action *, u64, u32, u64); |
843e79d0 | 97 | struct net_device *(*get_dev)(const struct tc_action *a); |
ddf97ccd WC |
98 | }; |
99 | ||
100 | struct tc_action_net { | |
65a206c0 | 101 | struct tcf_idrinfo *idrinfo; |
ddf97ccd | 102 | const struct tc_action_ops *ops; |
1da177e4 LT |
103 | }; |
104 | ||
ddf97ccd | 105 | static inline |
0b0f43fe | 106 | int tc_action_net_init(struct tc_action_net *tn, |
c7e460ce | 107 | const struct tc_action_ops *ops) |
ddf97ccd WC |
108 | { |
109 | int err = 0; | |
110 | ||
65a206c0 CM |
111 | tn->idrinfo = kmalloc(sizeof(*tn->idrinfo), GFP_KERNEL); |
112 | if (!tn->idrinfo) | |
ddf97ccd WC |
113 | return -ENOMEM; |
114 | tn->ops = ops; | |
65a206c0 CM |
115 | spin_lock_init(&tn->idrinfo->lock); |
116 | idr_init(&tn->idrinfo->action_idr); | |
ddf97ccd WC |
117 | return err; |
118 | } | |
119 | ||
65a206c0 CM |
120 | void tcf_idrinfo_destroy(const struct tc_action_ops *ops, |
121 | struct tcf_idrinfo *idrinfo); | |
ddf97ccd WC |
122 | |
123 | static inline void tc_action_net_exit(struct tc_action_net *tn) | |
124 | { | |
a159d3c4 | 125 | rtnl_lock(); |
65a206c0 | 126 | tcf_idrinfo_destroy(tn->ops, tn->idrinfo); |
a159d3c4 | 127 | rtnl_unlock(); |
65a206c0 | 128 | kfree(tn->idrinfo); |
ddf97ccd WC |
129 | } |
130 | ||
131 | int tcf_generic_walker(struct tc_action_net *tn, struct sk_buff *skb, | |
132 | struct netlink_callback *cb, int type, | |
a85a970a | 133 | const struct tc_action_ops *ops); |
65a206c0 CM |
134 | int tcf_idr_search(struct tc_action_net *tn, struct tc_action **a, u32 index); |
135 | bool tcf_idr_check(struct tc_action_net *tn, u32 index, struct tc_action **a, | |
b2313077 | 136 | int bind); |
65a206c0 CM |
137 | int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est, |
138 | struct tc_action **a, const struct tc_action_ops *ops, | |
139 | int bind, bool cpustats); | |
140 | void tcf_idr_cleanup(struct tc_action *a, struct nlattr *est); | |
141 | void tcf_idr_insert(struct tc_action_net *tn, struct tc_action *a); | |
e9ce1cd3 | 142 | |
65a206c0 | 143 | int __tcf_idr_release(struct tc_action *a, bool bind, bool strict); |
28e6b67f | 144 | |
65a206c0 | 145 | static inline int tcf_idr_release(struct tc_action *a, bool bind) |
28e6b67f | 146 | { |
65a206c0 | 147 | return __tcf_idr_release(a, bind, false); |
28e6b67f DB |
148 | } |
149 | ||
ddf97ccd | 150 | int tcf_register_action(struct tc_action_ops *a, struct pernet_operations *ops); |
0b0f43fe JHS |
151 | int tcf_unregister_action(struct tc_action_ops *a, |
152 | struct pernet_operations *ops); | |
55334a5d | 153 | int tcf_action_destroy(struct list_head *actions, int bind); |
22dc13c8 WC |
154 | int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions, |
155 | int nr_actions, struct tcf_result *res); | |
9fb9f251 JP |
156 | int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla, |
157 | struct nlattr *est, char *name, int ovr, int bind, | |
158 | struct list_head *actions); | |
159 | struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp, | |
160 | struct nlattr *nla, struct nlattr *est, | |
161 | char *name, int ovr, int bind); | |
33be6271 | 162 | int tcf_action_dump(struct sk_buff *skb, struct list_head *, int, int); |
5c15257f JP |
163 | int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); |
164 | int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); | |
165 | int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int); | |
00175aec | 166 | |
2734437e | 167 | #endif /* CONFIG_NET_CLS_ACT */ |
86cb13e4 | 168 | |
38040702 AV |
169 | static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes, |
170 | u64 packets, u64 lastuse) | |
171 | { | |
2734437e | 172 | #ifdef CONFIG_NET_CLS_ACT |
38040702 AV |
173 | if (!a->ops->stats_update) |
174 | return; | |
175 | ||
176 | a->ops->stats_update(a, bytes, packets, lastuse); | |
2734437e | 177 | #endif |
38040702 AV |
178 | } |
179 | ||
b3f55bdd JP |
180 | typedef int tc_setup_cb_t(enum tc_setup_type type, |
181 | void *type_data, void *cb_priv); | |
182 | ||
183 | #ifdef CONFIG_NET_CLS_ACT | |
184 | int tc_setup_cb_egdev_register(const struct net_device *dev, | |
185 | tc_setup_cb_t *cb, void *cb_priv); | |
186 | void tc_setup_cb_egdev_unregister(const struct net_device *dev, | |
187 | tc_setup_cb_t *cb, void *cb_priv); | |
188 | int tc_setup_cb_egdev_call(const struct net_device *dev, | |
189 | enum tc_setup_type type, void *type_data, | |
190 | bool err_stop); | |
191 | #else | |
192 | static inline | |
193 | int tc_setup_cb_egdev_register(const struct net_device *dev, | |
194 | tc_setup_cb_t *cb, void *cb_priv) | |
195 | { | |
196 | return 0; | |
197 | } | |
198 | ||
199 | static inline | |
200 | void tc_setup_cb_egdev_unregister(const struct net_device *dev, | |
201 | tc_setup_cb_t *cb, void *cb_priv) | |
202 | { | |
203 | } | |
204 | ||
205 | static inline | |
206 | int tc_setup_cb_egdev_call(const struct net_device *dev, | |
207 | enum tc_setup_type type, void *type_data, | |
208 | bool err_stop) | |
209 | { | |
210 | return 0; | |
211 | } | |
212 | #endif | |
213 | ||
1da177e4 | 214 | #endif |