act_police.c (74e630a7582e6b3cb39559d712a0049f08dea8a0) act_police.c (a85a970af265f156740977168b542234511b28a8)
1/*
2 * net/sched/act_police.c Input police filter
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *

--- 23 unchanged lines hidden (view full) ---

32 s64 tcfp_ptoks;
33 s64 tcfp_mtu_ptoks;
34 s64 tcfp_t_c;
35 struct psched_ratecfg rate;
36 bool rate_present;
37 struct psched_ratecfg peak;
38 bool peak_present;
39};
1/*
2 * net/sched/act_police.c Input police filter
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *

--- 23 unchanged lines hidden (view full) ---

32 s64 tcfp_ptoks;
33 s64 tcfp_mtu_ptoks;
34 s64 tcfp_t_c;
35 struct psched_ratecfg rate;
36 bool rate_present;
37 struct psched_ratecfg peak;
38 bool peak_present;
39};
40#define to_police(pc) \
41 container_of(pc->priv, struct tcf_police, common)
42
40
41#define to_police(pc) ((struct tcf_police *)pc)
42
43#define POL_TAB_MASK 15
44
45/* old policer structure from before tc actions */
46struct tc_police_compat {
47 u32 index;
48 int action;
49 u32 limit;
50 u32 burst;
51 u32 mtu;
52 struct tc_ratespec rate;
53 struct tc_ratespec peakrate;
54};
55
56/* Each policer is serialized by its individual spinlock */
57
58static int police_net_id;
43#define POL_TAB_MASK 15
44
45/* old policer structure from before tc actions */
46struct tc_police_compat {
47 u32 index;
48 int action;
49 u32 limit;
50 u32 burst;
51 u32 mtu;
52 struct tc_ratespec rate;
53 struct tc_ratespec peakrate;
54};
55
56/* Each policer is serialized by its individual spinlock */
57
58static int police_net_id;
59static struct tc_action_ops act_police_ops;
59
60static int tcf_act_police_walker(struct net *net, struct sk_buff *skb,
61 struct netlink_callback *cb, int type,
60
61static int tcf_act_police_walker(struct net *net, struct sk_buff *skb,
62 struct netlink_callback *cb, int type,
62 struct tc_action *a)
63 const struct tc_action_ops *ops)
63{
64 struct tc_action_net *tn = net_generic(net, police_net_id);
65 struct tcf_hashinfo *hinfo = tn->hinfo;
64{
65 struct tc_action_net *tn = net_generic(net, police_net_id);
66 struct tcf_hashinfo *hinfo = tn->hinfo;
66 struct hlist_head *head;
67 struct tcf_common *p;
68 int err = 0, index = -1, i = 0, s_i = 0, n_i = 0;
69 struct nlattr *nest;
70
71 spin_lock_bh(&hinfo->lock);
72
73 s_i = cb->args[0];
74
75 for (i = 0; i < (POL_TAB_MASK + 1); i++) {
67 int err = 0, index = -1, i = 0, s_i = 0, n_i = 0;
68 struct nlattr *nest;
69
70 spin_lock_bh(&hinfo->lock);
71
72 s_i = cb->args[0];
73
74 for (i = 0; i < (POL_TAB_MASK + 1); i++) {
75 struct hlist_head *head;
76 struct tcf_common *p;
77
76 head = &hinfo->htab[tcf_hash(i, POL_TAB_MASK)];
77
78 hlist_for_each_entry_rcu(p, head, tcfc_head) {
79 index++;
80 if (index < s_i)
81 continue;
78 head = &hinfo->htab[tcf_hash(i, POL_TAB_MASK)];
79
80 hlist_for_each_entry_rcu(p, head, tcfc_head) {
81 index++;
82 if (index < s_i)
83 continue;
82 a->priv = p;
83 a->order = index;
84 nest = nla_nest_start(skb, a->order);
84 nest = nla_nest_start(skb, index);
85 if (nest == NULL)
86 goto nla_put_failure;
87 if (type == RTM_DELACTION)
85 if (nest == NULL)
86 goto nla_put_failure;
87 if (type == RTM_DELACTION)
88 err = tcf_action_dump_1(skb, a, 0, 1);
88 err = tcf_action_dump_1(skb, (struct tc_action *)p, 0, 1);
89 else
89 else
90 err = tcf_action_dump_1(skb, a, 0, 0);
90 err = tcf_action_dump_1(skb, (struct tc_action *)p, 0, 0);
91 if (err < 0) {
92 index--;
93 nla_nest_cancel(skb, nest);
94 goto done;
95 }
96 nla_nest_end(skb, nest);
97 n_i++;
98 }

--- 11 unchanged lines hidden (view full) ---

110
111static const struct nla_policy police_policy[TCA_POLICE_MAX + 1] = {
112 [TCA_POLICE_RATE] = { .len = TC_RTAB_SIZE },
113 [TCA_POLICE_PEAKRATE] = { .len = TC_RTAB_SIZE },
114 [TCA_POLICE_AVRATE] = { .type = NLA_U32 },
115 [TCA_POLICE_RESULT] = { .type = NLA_U32 },
116};
117
91 if (err < 0) {
92 index--;
93 nla_nest_cancel(skb, nest);
94 goto done;
95 }
96 nla_nest_end(skb, nest);
97 n_i++;
98 }

--- 11 unchanged lines hidden (view full) ---

110
111static const struct nla_policy police_policy[TCA_POLICE_MAX + 1] = {
112 [TCA_POLICE_RATE] = { .len = TC_RTAB_SIZE },
113 [TCA_POLICE_PEAKRATE] = { .len = TC_RTAB_SIZE },
114 [TCA_POLICE_AVRATE] = { .type = NLA_U32 },
115 [TCA_POLICE_RESULT] = { .type = NLA_U32 },
116};
117
118static int tcf_act_police_locate(struct net *net, struct nlattr *nla,
119 struct nlattr *est, struct tc_action *a,
120 int ovr, int bind)
118static int tcf_act_police_init(struct net *net, struct nlattr *nla,
119 struct nlattr *est, struct tc_action **a,
120 int ovr, int bind)
121{
122 int ret = 0, err;
123 struct nlattr *tb[TCA_POLICE_MAX + 1];
124 struct tc_police *parm;
125 struct tcf_police *police;
126 struct qdisc_rate_table *R_tab = NULL, *P_tab = NULL;
127 struct tc_action_net *tn = net_generic(net, police_net_id);
128 int size;

--- 8 unchanged lines hidden (view full) ---

137 if (tb[TCA_POLICE_TBF] == NULL)
138 return -EINVAL;
139 size = nla_len(tb[TCA_POLICE_TBF]);
140 if (size != sizeof(*parm) && size != sizeof(struct tc_police_compat))
141 return -EINVAL;
142 parm = nla_data(tb[TCA_POLICE_TBF]);
143
144 if (parm->index) {
121{
122 int ret = 0, err;
123 struct nlattr *tb[TCA_POLICE_MAX + 1];
124 struct tc_police *parm;
125 struct tcf_police *police;
126 struct qdisc_rate_table *R_tab = NULL, *P_tab = NULL;
127 struct tc_action_net *tn = net_generic(net, police_net_id);
128 int size;

--- 8 unchanged lines hidden (view full) ---

137 if (tb[TCA_POLICE_TBF] == NULL)
138 return -EINVAL;
139 size = nla_len(tb[TCA_POLICE_TBF]);
140 if (size != sizeof(*parm) && size != sizeof(struct tc_police_compat))
141 return -EINVAL;
142 parm = nla_data(tb[TCA_POLICE_TBF]);
143
144 if (parm->index) {
145 if (tcf_hash_search(tn, a, parm->index)) {
146 police = to_police(a);
147 if (bind) {
148 police->tcf_bindcnt += 1;
149 police->tcf_refcnt += 1;
150 return 0;
151 }
145 if (tcf_hash_check(tn, parm->index, a, bind)) {
152 if (ovr)
153 goto override;
154 /* not replacing */
155 return -EEXIST;
156 }
157 } else {
158 ret = tcf_hash_create(tn, parm->index, NULL, a,
146 if (ovr)
147 goto override;
148 /* not replacing */
149 return -EEXIST;
150 }
151 } else {
152 ret = tcf_hash_create(tn, parm->index, NULL, a,
159 sizeof(*police), bind, false);
153 &act_police_ops, bind, false);
160 if (ret)
161 return ret;
162 ret = ACT_P_CREATED;
163 }
164
154 if (ret)
155 return ret;
156 ret = ACT_P_CREATED;
157 }
158
165 police = to_police(a);
166override:
159override:
160 police = to_police(*a);
167 if (parm->rate.rate) {
168 err = -ENOMEM;
169 R_tab = qdisc_get_rtab(&parm->rate, tb[TCA_POLICE_RATE]);
170 if (R_tab == NULL)
171 goto failure;
172
173 if (parm->peakrate.rate) {
174 P_tab = qdisc_get_rtab(&parm->peakrate,
175 tb[TCA_POLICE_PEAKRATE]);
176 if (P_tab == NULL)
177 goto failure;
178 }
179 }
180
181 spin_lock_bh(&police->tcf_lock);
182 if (est) {
183 err = gen_replace_estimator(&police->tcf_bstats, NULL,
184 &police->tcf_rate_est,
161 if (parm->rate.rate) {
162 err = -ENOMEM;
163 R_tab = qdisc_get_rtab(&parm->rate, tb[TCA_POLICE_RATE]);
164 if (R_tab == NULL)
165 goto failure;
166
167 if (parm->peakrate.rate) {
168 P_tab = qdisc_get_rtab(&parm->peakrate,
169 tb[TCA_POLICE_PEAKRATE]);
170 if (P_tab == NULL)
171 goto failure;
172 }
173 }
174
175 spin_lock_bh(&police->tcf_lock);
176 if (est) {
177 err = gen_replace_estimator(&police->tcf_bstats, NULL,
178 &police->tcf_rate_est,
185 &police->tcf_lock, est);
179 &police->tcf_lock,
180 NULL, est);
186 if (err)
187 goto failure_unlock;
188 } else if (tb[TCA_POLICE_AVRATE] &&
189 (ret == ACT_P_CREATED ||
190 !gen_estimator_active(&police->tcf_bstats,
191 &police->tcf_rate_est))) {
192 err = -EINVAL;
193 goto failure_unlock;

--- 35 unchanged lines hidden (view full) ---

229 if (tb[TCA_POLICE_AVRATE])
230 police->tcfp_ewma_rate = nla_get_u32(tb[TCA_POLICE_AVRATE]);
231
232 spin_unlock_bh(&police->tcf_lock);
233 if (ret != ACT_P_CREATED)
234 return ret;
235
236 police->tcfp_t_c = ktime_get_ns();
181 if (err)
182 goto failure_unlock;
183 } else if (tb[TCA_POLICE_AVRATE] &&
184 (ret == ACT_P_CREATED ||
185 !gen_estimator_active(&police->tcf_bstats,
186 &police->tcf_rate_est))) {
187 err = -EINVAL;
188 goto failure_unlock;

--- 35 unchanged lines hidden (view full) ---

224 if (tb[TCA_POLICE_AVRATE])
225 police->tcfp_ewma_rate = nla_get_u32(tb[TCA_POLICE_AVRATE]);
226
227 spin_unlock_bh(&police->tcf_lock);
228 if (ret != ACT_P_CREATED)
229 return ret;
230
231 police->tcfp_t_c = ktime_get_ns();
237 tcf_hash_insert(tn, a);
232 tcf_hash_insert(tn, *a);
238
239 return ret;
240
241failure_unlock:
242 spin_unlock_bh(&police->tcf_lock);
243failure:
244 qdisc_put_rtab(P_tab);
245 qdisc_put_rtab(R_tab);
246 if (ret == ACT_P_CREATED)
233
234 return ret;
235
236failure_unlock:
237 spin_unlock_bh(&police->tcf_lock);
238failure:
239 qdisc_put_rtab(P_tab);
240 qdisc_put_rtab(R_tab);
241 if (ret == ACT_P_CREATED)
247 tcf_hash_cleanup(a, est);
242 tcf_hash_cleanup(*a, est);
248 return err;
249}
250
251static int tcf_act_police(struct sk_buff *skb, const struct tc_action *a,
252 struct tcf_result *res)
253{
243 return err;
244}
245
246static int tcf_act_police(struct sk_buff *skb, const struct tc_action *a,
247 struct tcf_result *res)
248{
254 struct tcf_police *police = a->priv;
249 struct tcf_police *police = to_police(a);
255 s64 now;
256 s64 toks;
257 s64 ptoks = 0;
258
259 spin_lock(&police->tcf_lock);
260
261 bstats_update(&police->tcf_bstats, skb);
262 tcf_lastuse_update(&police->tcf_tm);

--- 42 unchanged lines hidden (view full) ---

305 spin_unlock(&police->tcf_lock);
306 return police->tcf_action;
307}
308
309static int
310tcf_act_police_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
311{
312 unsigned char *b = skb_tail_pointer(skb);
250 s64 now;
251 s64 toks;
252 s64 ptoks = 0;
253
254 spin_lock(&police->tcf_lock);
255
256 bstats_update(&police->tcf_bstats, skb);
257 tcf_lastuse_update(&police->tcf_tm);

--- 42 unchanged lines hidden (view full) ---

300 spin_unlock(&police->tcf_lock);
301 return police->tcf_action;
302}
303
304static int
305tcf_act_police_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
306{
307 unsigned char *b = skb_tail_pointer(skb);
313 struct tcf_police *police = a->priv;
308 struct tcf_police *police = to_police(a);
314 struct tc_police opt = {
315 .index = police->tcf_index,
316 .action = police->tcf_action,
317 .mtu = police->tcfp_mtu,
318 .burst = PSCHED_NS2TICKS(police->tcfp_burst),
319 .refcnt = police->tcf_refcnt - ref,
320 .bindcnt = police->tcf_bindcnt - bind,
321 };

--- 9 unchanged lines hidden (view full) ---

331 nla_put_u32(skb, TCA_POLICE_RESULT, police->tcfp_result))
332 goto nla_put_failure;
333 if (police->tcfp_ewma_rate &&
334 nla_put_u32(skb, TCA_POLICE_AVRATE, police->tcfp_ewma_rate))
335 goto nla_put_failure;
336
337 t.install = jiffies_to_clock_t(jiffies - police->tcf_tm.install);
338 t.lastuse = jiffies_to_clock_t(jiffies - police->tcf_tm.lastuse);
309 struct tc_police opt = {
310 .index = police->tcf_index,
311 .action = police->tcf_action,
312 .mtu = police->tcfp_mtu,
313 .burst = PSCHED_NS2TICKS(police->tcfp_burst),
314 .refcnt = police->tcf_refcnt - ref,
315 .bindcnt = police->tcf_bindcnt - bind,
316 };

--- 9 unchanged lines hidden (view full) ---

326 nla_put_u32(skb, TCA_POLICE_RESULT, police->tcfp_result))
327 goto nla_put_failure;
328 if (police->tcfp_ewma_rate &&
329 nla_put_u32(skb, TCA_POLICE_AVRATE, police->tcfp_ewma_rate))
330 goto nla_put_failure;
331
332 t.install = jiffies_to_clock_t(jiffies - police->tcf_tm.install);
333 t.lastuse = jiffies_to_clock_t(jiffies - police->tcf_tm.lastuse);
334 t.firstuse = jiffies_to_clock_t(jiffies - police->tcf_tm.firstuse);
339 t.expires = jiffies_to_clock_t(police->tcf_tm.expires);
340 if (nla_put_64bit(skb, TCA_POLICE_TM, sizeof(t), &t, TCA_POLICE_PAD))
341 goto nla_put_failure;
342
343 return skb->len;
344
345nla_put_failure:
346 nlmsg_trim(skb, b);
347 return -1;
348}
349
335 t.expires = jiffies_to_clock_t(police->tcf_tm.expires);
336 if (nla_put_64bit(skb, TCA_POLICE_TM, sizeof(t), &t, TCA_POLICE_PAD))
337 goto nla_put_failure;
338
339 return skb->len;
340
341nla_put_failure:
342 nlmsg_trim(skb, b);
343 return -1;
344}
345
350static int tcf_police_search(struct net *net, struct tc_action *a, u32 index)
346static int tcf_police_search(struct net *net, struct tc_action **a, u32 index)
351{
352 struct tc_action_net *tn = net_generic(net, police_net_id);
353
354 return tcf_hash_search(tn, a, index);
355}
356
357MODULE_AUTHOR("Alexey Kuznetsov");
358MODULE_DESCRIPTION("Policing actions");
359MODULE_LICENSE("GPL");
360
361static struct tc_action_ops act_police_ops = {
362 .kind = "police",
363 .type = TCA_ID_POLICE,
364 .owner = THIS_MODULE,
365 .act = tcf_act_police,
366 .dump = tcf_act_police_dump,
347{
348 struct tc_action_net *tn = net_generic(net, police_net_id);
349
350 return tcf_hash_search(tn, a, index);
351}
352
353MODULE_AUTHOR("Alexey Kuznetsov");
354MODULE_DESCRIPTION("Policing actions");
355MODULE_LICENSE("GPL");
356
357static struct tc_action_ops act_police_ops = {
358 .kind = "police",
359 .type = TCA_ID_POLICE,
360 .owner = THIS_MODULE,
361 .act = tcf_act_police,
362 .dump = tcf_act_police_dump,
367 .init = tcf_act_police_locate,
363 .init = tcf_act_police_init,
368 .walk = tcf_act_police_walker,
369 .lookup = tcf_police_search,
364 .walk = tcf_act_police_walker,
365 .lookup = tcf_police_search,
366 .size = sizeof(struct tcf_police),
370};
371
372static __net_init int police_init_net(struct net *net)
373{
374 struct tc_action_net *tn = net_generic(net, police_net_id);
375
376 return tc_action_net_init(tn, &act_police_ops, POL_TAB_MASK);
377}

--- 29 unchanged lines hidden --- 		367};
368
369static __net_init int police_init_net(struct net *net)
370{
371 struct tc_action_net *tn = net_generic(net, police_net_id);
372
373 return tc_action_net_init(tn, &act_police_ops, POL_TAB_MASK);
374}

--- 29 unchanged lines hidden ---