Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
0c6965dd | 3 | * net/sched/act_police.c Input police filter |
1da177e4 | 4 | * |
1da177e4 LT |
5 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
6 | * J Hadi Salim (action changes) | |
7 | */ | |
8 | ||
1da177e4 LT |
9 | #include <linux/module.h> |
10 | #include <linux/types.h> | |
11 | #include <linux/kernel.h> | |
1da177e4 | 12 | #include <linux/string.h> |
1da177e4 | 13 | #include <linux/errno.h> |
1da177e4 | 14 | #include <linux/skbuff.h> |
1da177e4 LT |
15 | #include <linux/rtnetlink.h> |
16 | #include <linux/init.h> | |
5a0e3ad6 | 17 | #include <linux/slab.h> |
1da177e4 | 18 | #include <net/act_api.h> |
dc5fc579 | 19 | #include <net/netlink.h> |
d6124d6b | 20 | #include <net/pkt_cls.h> |
fa762da9 | 21 | #include <net/tc_act/tc_police.h> |
871cf386 | 22 | #include <net/tc_wrapper.h> |
1e9b3d53 | 23 | |
e9ce1cd3 | 24 | /* Each policer is serialized by its individual spinlock */ |
1da177e4 | 25 | |
a85a970a | 26 | static struct tc_action_ops act_police_ops; |
ddf97ccd | 27 | |
53b2bf3f PM |
28 | static const struct nla_policy police_policy[TCA_POLICE_MAX + 1] = { |
29 | [TCA_POLICE_RATE] = { .len = TC_RTAB_SIZE }, | |
30 | [TCA_POLICE_PEAKRATE] = { .len = TC_RTAB_SIZE }, | |
31 | [TCA_POLICE_AVRATE] = { .type = NLA_U32 }, | |
32 | [TCA_POLICE_RESULT] = { .type = NLA_U32 }, | |
d1967e49 DD |
33 | [TCA_POLICE_RATE64] = { .type = NLA_U64 }, |
34 | [TCA_POLICE_PEAKRATE64] = { .type = NLA_U64 }, | |
2ffe0395 BZ |
35 | [TCA_POLICE_PKTRATE64] = { .type = NLA_U64, .min = 1 }, |
36 | [TCA_POLICE_PKTBURST64] = { .type = NLA_U64, .min = 1 }, | |
53b2bf3f PM |
37 | }; |
38 | ||
2ac06347 | 39 | static int tcf_police_init(struct net *net, struct nlattr *nla, |
a85a970a | 40 | struct nlattr *est, struct tc_action **a, |
abbb0d33 | 41 | struct tcf_proto *tp, u32 flags, |
589dad6d | 42 | struct netlink_ext_ack *extack) |
1da177e4 | 43 | { |
fd6d4338 | 44 | int ret = 0, tcfp_result = TC_ACT_OK, err, size; |
695176bf | 45 | bool bind = flags & TCA_ACT_FLAGS_BIND; |
7ba699c6 | 46 | struct nlattr *tb[TCA_POLICE_MAX + 1]; |
d6124d6b | 47 | struct tcf_chain *goto_ch = NULL; |
1da177e4 | 48 | struct tc_police *parm; |
e9ce1cd3 | 49 | struct tcf_police *police; |
1da177e4 | 50 | struct qdisc_rate_table *R_tab = NULL, *P_tab = NULL; |
acd0a7ab | 51 | struct tc_action_net *tn = net_generic(net, act_police_ops.net_id); |
2d550dba | 52 | struct tcf_police_params *new; |
0852e455 | 53 | bool exists = false; |
7be8ef2c | 54 | u32 index; |
d1967e49 | 55 | u64 rate64, prate64; |
2ffe0395 | 56 | u64 pps, ppsburst; |
1da177e4 | 57 | |
cee63723 | 58 | if (nla == NULL) |
1da177e4 LT |
59 | return -EINVAL; |
60 | ||
8cb08174 JB |
61 | err = nla_parse_nested_deprecated(tb, TCA_POLICE_MAX, nla, |
62 | police_policy, NULL); | |
cee63723 PM |
63 | if (err < 0) |
64 | return err; | |
65 | ||
7ba699c6 | 66 | if (tb[TCA_POLICE_TBF] == NULL) |
1e9b3d53 | 67 | return -EINVAL; |
7ba699c6 | 68 | size = nla_len(tb[TCA_POLICE_TBF]); |
1e9b3d53 | 69 | if (size != sizeof(*parm) && size != sizeof(struct tc_police_compat)) |
1da177e4 | 70 | return -EINVAL; |
0852e455 | 71 | |
7ba699c6 | 72 | parm = nla_data(tb[TCA_POLICE_TBF]); |
7be8ef2c DL |
73 | index = parm->index; |
74 | err = tcf_idr_check_alloc(tn, &index, a, bind); | |
0190c1d4 VB |
75 | if (err < 0) |
76 | return err; | |
77 | exists = err; | |
0852e455 WC |
78 | if (exists && bind) |
79 | return 0; | |
1da177e4 | 80 | |
0852e455 | 81 | if (!exists) { |
7be8ef2c | 82 | ret = tcf_idr_create(tn, index, NULL, a, |
40bd094d | 83 | &act_police_ops, bind, true, flags); |
0190c1d4 | 84 | if (ret) { |
7be8ef2c | 85 | tcf_idr_cleanup(tn, index); |
a03e6fe5 | 86 | return ret; |
0190c1d4 | 87 | } |
a03e6fe5 | 88 | ret = ACT_P_CREATED; |
484afd1b | 89 | spin_lock_init(&(to_police(*a)->tcfp_lock)); |
695176bf | 90 | } else if (!(flags & TCA_ACT_FLAGS_REPLACE)) { |
65a206c0 | 91 | tcf_idr_release(*a, bind); |
4e8ddd7f | 92 | return -EEXIST; |
1da177e4 | 93 | } |
d6124d6b DC |
94 | err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack); |
95 | if (err < 0) | |
96 | goto release_idr; | |
1da177e4 | 97 | |
a85a970a | 98 | police = to_police(*a); |
1da177e4 LT |
99 | if (parm->rate.rate) { |
100 | err = -ENOMEM; | |
e9bc3fa2 | 101 | R_tab = qdisc_get_rtab(&parm->rate, tb[TCA_POLICE_RATE], NULL); |
1da177e4 LT |
102 | if (R_tab == NULL) |
103 | goto failure; | |
c1b56878 | 104 | |
1da177e4 LT |
105 | if (parm->peakrate.rate) { |
106 | P_tab = qdisc_get_rtab(&parm->peakrate, | |
e9bc3fa2 | 107 | tb[TCA_POLICE_PEAKRATE], NULL); |
71bcb09a | 108 | if (P_tab == NULL) |
1da177e4 | 109 | goto failure; |
1da177e4 LT |
110 | } |
111 | } | |
71bcb09a | 112 | |
71bcb09a | 113 | if (est) { |
93be42f9 DC |
114 | err = gen_replace_estimator(&police->tcf_bstats, |
115 | police->common.cpu_bstats, | |
71bcb09a | 116 | &police->tcf_rate_est, |
edb09eb1 | 117 | &police->tcf_lock, |
29cbcd85 | 118 | false, est); |
71bcb09a | 119 | if (err) |
74030603 | 120 | goto failure; |
a883bf56 JP |
121 | } else if (tb[TCA_POLICE_AVRATE] && |
122 | (ret == ACT_P_CREATED || | |
1c0d32fd | 123 | !gen_estimator_active(&police->tcf_rate_est))) { |
a883bf56 | 124 | err = -EINVAL; |
74030603 | 125 | goto failure; |
71bcb09a SH |
126 | } |
127 | ||
fd6d4338 DC |
128 | if (tb[TCA_POLICE_RESULT]) { |
129 | tcfp_result = nla_get_u32(tb[TCA_POLICE_RESULT]); | |
130 | if (TC_ACT_EXT_CMP(tcfp_result, TC_ACT_GOTO_CHAIN)) { | |
131 | NL_SET_ERR_MSG(extack, | |
132 | "goto chain not allowed on fallback"); | |
133 | err = -EINVAL; | |
134 | goto failure; | |
135 | } | |
136 | } | |
137 | ||
2ffe0395 BZ |
138 | if ((tb[TCA_POLICE_PKTRATE64] && !tb[TCA_POLICE_PKTBURST64]) || |
139 | (!tb[TCA_POLICE_PKTRATE64] && tb[TCA_POLICE_PKTBURST64])) { | |
140 | NL_SET_ERR_MSG(extack, | |
141 | "Both or neither packet-per-second burst and rate must be provided"); | |
142 | err = -EINVAL; | |
143 | goto failure; | |
144 | } | |
145 | ||
146 | if (tb[TCA_POLICE_PKTRATE64] && R_tab) { | |
147 | NL_SET_ERR_MSG(extack, | |
148 | "packet-per-second and byte-per-second rate limits not allowed in same action"); | |
149 | err = -EINVAL; | |
150 | goto failure; | |
151 | } | |
152 | ||
2d550dba DC |
153 | new = kzalloc(sizeof(*new), GFP_KERNEL); |
154 | if (unlikely(!new)) { | |
155 | err = -ENOMEM; | |
156 | goto failure; | |
157 | } | |
158 | ||
71bcb09a | 159 | /* No failure allowed after this point */ |
fd6d4338 | 160 | new->tcfp_result = tcfp_result; |
2d550dba DC |
161 | new->tcfp_mtu = parm->mtu; |
162 | if (!new->tcfp_mtu) { | |
163 | new->tcfp_mtu = ~0; | |
c6d14ff1 | 164 | if (R_tab) |
2d550dba | 165 | new->tcfp_mtu = 255 << R_tab->rate.cell_log; |
c6d14ff1 JP |
166 | } |
167 | if (R_tab) { | |
2d550dba | 168 | new->rate_present = true; |
d1967e49 DD |
169 | rate64 = tb[TCA_POLICE_RATE64] ? |
170 | nla_get_u64(tb[TCA_POLICE_RATE64]) : 0; | |
171 | psched_ratecfg_precompute(&new->rate, &R_tab->rate, rate64); | |
c6d14ff1 JP |
172 | qdisc_put_rtab(R_tab); |
173 | } else { | |
2d550dba | 174 | new->rate_present = false; |
1da177e4 | 175 | } |
c6d14ff1 | 176 | if (P_tab) { |
2d550dba | 177 | new->peak_present = true; |
d1967e49 DD |
178 | prate64 = tb[TCA_POLICE_PEAKRATE64] ? |
179 | nla_get_u64(tb[TCA_POLICE_PEAKRATE64]) : 0; | |
180 | psched_ratecfg_precompute(&new->peak, &P_tab->rate, prate64); | |
c6d14ff1 JP |
181 | qdisc_put_rtab(P_tab); |
182 | } else { | |
2d550dba | 183 | new->peak_present = false; |
1da177e4 LT |
184 | } |
185 | ||
2d550dba | 186 | new->tcfp_burst = PSCHED_TICKS2NS(parm->burst); |
f2cbd485 | 187 | if (new->peak_present) |
2d550dba DC |
188 | new->tcfp_mtu_ptoks = (s64)psched_l2t_ns(&new->peak, |
189 | new->tcfp_mtu); | |
1da177e4 | 190 | |
7ba699c6 | 191 | if (tb[TCA_POLICE_AVRATE]) |
2d550dba | 192 | new->tcfp_ewma_rate = nla_get_u32(tb[TCA_POLICE_AVRATE]); |
1da177e4 | 193 | |
2ffe0395 BZ |
194 | if (tb[TCA_POLICE_PKTRATE64]) { |
195 | pps = nla_get_u64(tb[TCA_POLICE_PKTRATE64]); | |
196 | ppsburst = nla_get_u64(tb[TCA_POLICE_PKTBURST64]); | |
197 | new->pps_present = true; | |
198 | new->tcfp_pkt_burst = PSCHED_TICKS2NS(ppsburst); | |
199 | psched_ppscfg_precompute(&new->ppsrate, pps); | |
200 | } | |
201 | ||
2d550dba | 202 | spin_lock_bh(&police->tcf_lock); |
f2cbd485 DC |
203 | spin_lock_bh(&police->tcfp_lock); |
204 | police->tcfp_t_c = ktime_get_ns(); | |
205 | police->tcfp_toks = new->tcfp_burst; | |
206 | if (new->peak_present) | |
207 | police->tcfp_ptoks = new->tcfp_mtu_ptoks; | |
208 | spin_unlock_bh(&police->tcfp_lock); | |
d6124d6b | 209 | goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch); |
445d3749 PM |
210 | new = rcu_replace_pointer(police->params, |
211 | new, | |
212 | lockdep_is_held(&police->tcf_lock)); | |
e9ce1cd3 | 213 | spin_unlock_bh(&police->tcf_lock); |
1da177e4 | 214 | |
d6124d6b DC |
215 | if (goto_ch) |
216 | tcf_chain_put_by_act(goto_ch); | |
2d550dba DC |
217 | if (new) |
218 | kfree_rcu(new, rcu); | |
1da177e4 | 219 | |
1da177e4 LT |
220 | return ret; |
221 | ||
222 | failure: | |
3b69a4c9 YY |
223 | qdisc_put_rtab(P_tab); |
224 | qdisc_put_rtab(R_tab); | |
d6124d6b DC |
225 | if (goto_ch) |
226 | tcf_chain_put_by_act(goto_ch); | |
227 | release_idr: | |
4e8ddd7f | 228 | tcf_idr_release(*a, bind); |
1da177e4 LT |
229 | return err; |
230 | } | |
231 | ||
4ddc844e DC |
232 | static bool tcf_police_mtu_check(struct sk_buff *skb, u32 limit) |
233 | { | |
234 | u32 len; | |
235 | ||
236 | if (skb_is_gso(skb)) | |
237 | return skb_gso_validate_mac_len(skb, limit); | |
238 | ||
239 | len = qdisc_pkt_len(skb); | |
240 | if (skb_at_tc_ingress(skb)) | |
241 | len += skb->mac_len; | |
242 | ||
243 | return len <= limit; | |
244 | } | |
245 | ||
871cf386 PT |
246 | TC_INDIRECT_SCOPE int tcf_police_act(struct sk_buff *skb, |
247 | const struct tc_action *a, | |
248 | struct tcf_result *res) | |
1da177e4 | 249 | { |
a85a970a | 250 | struct tcf_police *police = to_police(a); |
2ffe0395 | 251 | s64 now, toks, ppstoks = 0, ptoks = 0; |
2d550dba | 252 | struct tcf_police_params *p; |
93be42f9 | 253 | int ret; |
1da177e4 | 254 | |
3d3ed181 | 255 | tcf_lastuse_update(&police->tcf_tm); |
50dc9a85 | 256 | bstats_update(this_cpu_ptr(police->common.cpu_bstats), skb); |
1da177e4 | 257 | |
2d550dba DC |
258 | ret = READ_ONCE(police->tcf_action); |
259 | p = rcu_dereference_bh(police->params); | |
260 | ||
261 | if (p->tcfp_ewma_rate) { | |
1c0d32fd ED |
262 | struct gnet_stats_rate_est64 sample; |
263 | ||
264 | if (!gen_estimator_read(&police->tcf_rate_est, &sample) || | |
2d550dba | 265 | sample.bps >= p->tcfp_ewma_rate) |
93be42f9 | 266 | goto inc_overlimits; |
1da177e4 | 267 | } |
1da177e4 | 268 | |
4ddc844e | 269 | if (tcf_police_mtu_check(skb, p->tcfp_mtu)) { |
2ffe0395 | 270 | if (!p->rate_present && !p->pps_present) { |
2d550dba DC |
271 | ret = p->tcfp_result; |
272 | goto end; | |
1da177e4 LT |
273 | } |
274 | ||
d2de875c | 275 | now = ktime_get_ns(); |
f2cbd485 DC |
276 | spin_lock_bh(&police->tcfp_lock); |
277 | toks = min_t(s64, now - police->tcfp_t_c, p->tcfp_burst); | |
2d550dba | 278 | if (p->peak_present) { |
f2cbd485 | 279 | ptoks = toks + police->tcfp_ptoks; |
2d550dba DC |
280 | if (ptoks > p->tcfp_mtu_ptoks) |
281 | ptoks = p->tcfp_mtu_ptoks; | |
282 | ptoks -= (s64)psched_l2t_ns(&p->peak, | |
283 | qdisc_pkt_len(skb)); | |
1da177e4 | 284 | } |
2ffe0395 BZ |
285 | if (p->rate_present) { |
286 | toks += police->tcfp_toks; | |
287 | if (toks > p->tcfp_burst) | |
288 | toks = p->tcfp_burst; | |
289 | toks -= (s64)psched_l2t_ns(&p->rate, qdisc_pkt_len(skb)); | |
290 | } else if (p->pps_present) { | |
291 | ppstoks = min_t(s64, now - police->tcfp_t_c, p->tcfp_pkt_burst); | |
292 | ppstoks += police->tcfp_pkttoks; | |
293 | if (ppstoks > p->tcfp_pkt_burst) | |
294 | ppstoks = p->tcfp_pkt_burst; | |
295 | ppstoks -= (s64)psched_pkt2t_ns(&p->ppsrate, 1); | |
296 | } | |
297 | if ((toks | ptoks | ppstoks) >= 0) { | |
f2cbd485 DC |
298 | police->tcfp_t_c = now; |
299 | police->tcfp_toks = toks; | |
300 | police->tcfp_ptoks = ptoks; | |
2ffe0395 | 301 | police->tcfp_pkttoks = ppstoks; |
f2cbd485 | 302 | spin_unlock_bh(&police->tcfp_lock); |
2d550dba | 303 | ret = p->tcfp_result; |
93be42f9 | 304 | goto inc_drops; |
1da177e4 | 305 | } |
f2cbd485 | 306 | spin_unlock_bh(&police->tcfp_lock); |
1da177e4 | 307 | } |
93be42f9 DC |
308 | |
309 | inc_overlimits: | |
310 | qstats_overlimit_inc(this_cpu_ptr(police->common.cpu_qstats)); | |
311 | inc_drops: | |
312 | if (ret == TC_ACT_SHOT) | |
313 | qstats_drop_inc(this_cpu_ptr(police->common.cpu_qstats)); | |
2d550dba | 314 | end: |
93be42f9 | 315 | return ret; |
1da177e4 LT |
316 | } |
317 | ||
2d550dba DC |
318 | static void tcf_police_cleanup(struct tc_action *a) |
319 | { | |
320 | struct tcf_police *police = to_police(a); | |
321 | struct tcf_police_params *p; | |
322 | ||
323 | p = rcu_dereference_protected(police->params, 1); | |
324 | if (p) | |
325 | kfree_rcu(p, rcu); | |
326 | } | |
327 | ||
12f02b6b | 328 | static void tcf_police_stats_update(struct tc_action *a, |
4b61d3e8 | 329 | u64 bytes, u64 packets, u64 drops, |
12f02b6b PJV |
330 | u64 lastuse, bool hw) |
331 | { | |
332 | struct tcf_police *police = to_police(a); | |
333 | struct tcf_t *tm = &police->tcf_tm; | |
334 | ||
4b61d3e8 | 335 | tcf_action_update_stats(a, bytes, packets, drops, hw); |
12f02b6b PJV |
336 | tm->lastuse = max_t(u64, tm->lastuse, lastuse); |
337 | } | |
338 | ||
2ac06347 | 339 | static int tcf_police_dump(struct sk_buff *skb, struct tc_action *a, |
5a7a5555 | 340 | int bind, int ref) |
1da177e4 | 341 | { |
27a884dc | 342 | unsigned char *b = skb_tail_pointer(skb); |
a85a970a | 343 | struct tcf_police *police = to_police(a); |
2d550dba | 344 | struct tcf_police_params *p; |
0f04cfd0 JM |
345 | struct tc_police opt = { |
346 | .index = police->tcf_index, | |
036bb443 VB |
347 | .refcnt = refcount_read(&police->tcf_refcnt) - ref, |
348 | .bindcnt = atomic_read(&police->tcf_bindcnt) - bind, | |
0f04cfd0 | 349 | }; |
3d3ed181 | 350 | struct tcf_t t; |
0f04cfd0 | 351 | |
e329bc42 VB |
352 | spin_lock_bh(&police->tcf_lock); |
353 | opt.action = police->tcf_action; | |
2d550dba DC |
354 | p = rcu_dereference_protected(police->params, |
355 | lockdep_is_held(&police->tcf_lock)); | |
356 | opt.mtu = p->tcfp_mtu; | |
357 | opt.burst = PSCHED_NS2TICKS(p->tcfp_burst); | |
d1967e49 | 358 | if (p->rate_present) { |
2d550dba | 359 | psched_ratecfg_getrate(&opt.rate, &p->rate); |
d1967e49 DD |
360 | if ((police->params->rate.rate_bytes_ps >= (1ULL << 32)) && |
361 | nla_put_u64_64bit(skb, TCA_POLICE_RATE64, | |
362 | police->params->rate.rate_bytes_ps, | |
363 | TCA_POLICE_PAD)) | |
364 | goto nla_put_failure; | |
365 | } | |
366 | if (p->peak_present) { | |
2d550dba | 367 | psched_ratecfg_getrate(&opt.peakrate, &p->peak); |
d1967e49 DD |
368 | if ((police->params->peak.rate_bytes_ps >= (1ULL << 32)) && |
369 | nla_put_u64_64bit(skb, TCA_POLICE_PEAKRATE64, | |
370 | police->params->peak.rate_bytes_ps, | |
371 | TCA_POLICE_PAD)) | |
372 | goto nla_put_failure; | |
373 | } | |
2ffe0395 BZ |
374 | if (p->pps_present) { |
375 | if (nla_put_u64_64bit(skb, TCA_POLICE_PKTRATE64, | |
376 | police->params->ppsrate.rate_pkts_ps, | |
377 | TCA_POLICE_PAD)) | |
378 | goto nla_put_failure; | |
379 | if (nla_put_u64_64bit(skb, TCA_POLICE_PKTBURST64, | |
380 | PSCHED_NS2TICKS(p->tcfp_pkt_burst), | |
381 | TCA_POLICE_PAD)) | |
382 | goto nla_put_failure; | |
383 | } | |
1b34ec43 DM |
384 | if (nla_put(skb, TCA_POLICE_TBF, sizeof(opt), &opt)) |
385 | goto nla_put_failure; | |
2d550dba DC |
386 | if (p->tcfp_result && |
387 | nla_put_u32(skb, TCA_POLICE_RESULT, p->tcfp_result)) | |
1b34ec43 | 388 | goto nla_put_failure; |
2d550dba DC |
389 | if (p->tcfp_ewma_rate && |
390 | nla_put_u32(skb, TCA_POLICE_AVRATE, p->tcfp_ewma_rate)) | |
1b34ec43 | 391 | goto nla_put_failure; |
3d3ed181 | 392 | |
985fd98a | 393 | tcf_tm_dump(&t, &police->tcf_tm); |
3d3ed181 JHS |
394 | if (nla_put_64bit(skb, TCA_POLICE_TM, sizeof(t), &t, TCA_POLICE_PAD)) |
395 | goto nla_put_failure; | |
e329bc42 | 396 | spin_unlock_bh(&police->tcf_lock); |
3d3ed181 | 397 | |
1da177e4 LT |
398 | return skb->len; |
399 | ||
7ba699c6 | 400 | nla_put_failure: |
e329bc42 | 401 | spin_unlock_bh(&police->tcf_lock); |
dc5fc579 | 402 | nlmsg_trim(skb, b); |
1da177e4 LT |
403 | return -1; |
404 | } | |
405 | ||
b50e462b IS |
406 | static int tcf_police_act_to_flow_act(int tc_act, u32 *extval, |
407 | struct netlink_ext_ack *extack) | |
b8cd5831 JL |
408 | { |
409 | int act_id = -EOPNOTSUPP; | |
410 | ||
411 | if (!TC_ACT_EXT_OPCODE(tc_act)) { | |
412 | if (tc_act == TC_ACT_OK) | |
413 | act_id = FLOW_ACTION_ACCEPT; | |
414 | else if (tc_act == TC_ACT_SHOT) | |
415 | act_id = FLOW_ACTION_DROP; | |
416 | else if (tc_act == TC_ACT_PIPE) | |
417 | act_id = FLOW_ACTION_PIPE; | |
b50e462b IS |
418 | else if (tc_act == TC_ACT_RECLASSIFY) |
419 | NL_SET_ERR_MSG_MOD(extack, "Offload not supported when conform/exceed action is \"reclassify\""); | |
420 | else | |
421 | NL_SET_ERR_MSG_MOD(extack, "Unsupported conform/exceed action offload"); | |
b8cd5831 JL |
422 | } else if (TC_ACT_EXT_CMP(tc_act, TC_ACT_GOTO_CHAIN)) { |
423 | act_id = FLOW_ACTION_GOTO; | |
424 | *extval = tc_act & TC_ACT_EXT_VAL_MASK; | |
425 | } else if (TC_ACT_EXT_CMP(tc_act, TC_ACT_JUMP)) { | |
426 | act_id = FLOW_ACTION_JUMP; | |
427 | *extval = tc_act & TC_ACT_EXT_VAL_MASK; | |
b50e462b | 428 | } else if (tc_act == TC_ACT_UNSPEC) { |
052f744f | 429 | act_id = FLOW_ACTION_CONTINUE; |
b50e462b IS |
430 | } else { |
431 | NL_SET_ERR_MSG_MOD(extack, "Unsupported conform/exceed action offload"); | |
b8cd5831 JL |
432 | } |
433 | ||
434 | return act_id; | |
435 | } | |
436 | ||
c54e1d92 | 437 | static int tcf_police_offload_act_setup(struct tc_action *act, void *entry_data, |
c2ccf84e IS |
438 | u32 *index_inc, bool bind, |
439 | struct netlink_ext_ack *extack) | |
c54e1d92 BZ |
440 | { |
441 | if (bind) { | |
442 | struct flow_action_entry *entry = entry_data; | |
b8cd5831 JL |
443 | struct tcf_police *police = to_police(act); |
444 | struct tcf_police_params *p; | |
445 | int act_id; | |
446 | ||
447 | p = rcu_dereference_protected(police->params, | |
448 | lockdep_is_held(&police->tcf_lock)); | |
c54e1d92 BZ |
449 | |
450 | entry->id = FLOW_ACTION_POLICE; | |
451 | entry->police.burst = tcf_police_burst(act); | |
452 | entry->police.rate_bytes_ps = | |
453 | tcf_police_rate_bytes_ps(act); | |
b8cd5831 JL |
454 | entry->police.peakrate_bytes_ps = tcf_police_peakrate_bytes_ps(act); |
455 | entry->police.avrate = tcf_police_tcfp_ewma_rate(act); | |
456 | entry->police.overhead = tcf_police_rate_overhead(act); | |
c54e1d92 BZ |
457 | entry->police.burst_pkt = tcf_police_burst_pkt(act); |
458 | entry->police.rate_pkt_ps = | |
459 | tcf_police_rate_pkt_ps(act); | |
460 | entry->police.mtu = tcf_police_tcfp_mtu(act); | |
b8cd5831 JL |
461 | |
462 | act_id = tcf_police_act_to_flow_act(police->tcf_action, | |
b50e462b IS |
463 | &entry->police.exceed.extval, |
464 | extack); | |
b8cd5831 JL |
465 | if (act_id < 0) |
466 | return act_id; | |
467 | ||
468 | entry->police.exceed.act_id = act_id; | |
469 | ||
470 | act_id = tcf_police_act_to_flow_act(p->tcfp_result, | |
b50e462b IS |
471 | &entry->police.notexceed.extval, |
472 | extack); | |
b8cd5831 JL |
473 | if (act_id < 0) |
474 | return act_id; | |
475 | ||
476 | entry->police.notexceed.act_id = act_id; | |
477 | ||
c54e1d92 BZ |
478 | *index_inc = 1; |
479 | } else { | |
8cbfe939 BZ |
480 | struct flow_offload_action *fl_action = entry_data; |
481 | ||
482 | fl_action->id = FLOW_ACTION_POLICE; | |
c54e1d92 BZ |
483 | } |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
1da177e4 LT |
488 | MODULE_AUTHOR("Alexey Kuznetsov"); |
489 | MODULE_DESCRIPTION("Policing actions"); | |
490 | MODULE_LICENSE("GPL"); | |
491 | ||
492 | static struct tc_action_ops act_police_ops = { | |
493 | .kind = "police", | |
eddd2cf1 | 494 | .id = TCA_ID_POLICE, |
1da177e4 | 495 | .owner = THIS_MODULE, |
12f02b6b | 496 | .stats_update = tcf_police_stats_update, |
2ac06347 JHS |
497 | .act = tcf_police_act, |
498 | .dump = tcf_police_dump, | |
499 | .init = tcf_police_init, | |
2d550dba | 500 | .cleanup = tcf_police_cleanup, |
c54e1d92 | 501 | .offload_act_setup = tcf_police_offload_act_setup, |
a85a970a | 502 | .size = sizeof(struct tcf_police), |
ddf97ccd WC |
503 | }; |
504 | ||
505 | static __net_init int police_init_net(struct net *net) | |
506 | { | |
acd0a7ab | 507 | struct tc_action_net *tn = net_generic(net, act_police_ops.net_id); |
ddf97ccd | 508 | |
981471bd | 509 | return tc_action_net_init(net, tn, &act_police_ops); |
ddf97ccd WC |
510 | } |
511 | ||
039af9c6 | 512 | static void __net_exit police_exit_net(struct list_head *net_list) |
ddf97ccd | 513 | { |
acd0a7ab | 514 | tc_action_net_exit(net_list, act_police_ops.net_id); |
ddf97ccd WC |
515 | } |
516 | ||
517 | static struct pernet_operations police_net_ops = { | |
518 | .init = police_init_net, | |
039af9c6 | 519 | .exit_batch = police_exit_net, |
acd0a7ab | 520 | .id = &act_police_ops.net_id, |
ddf97ccd | 521 | .size = sizeof(struct tc_action_net), |
1da177e4 LT |
522 | }; |
523 | ||
5a7a5555 | 524 | static int __init police_init_module(void) |
1da177e4 | 525 | { |
ddf97ccd | 526 | return tcf_register_action(&act_police_ops, &police_net_ops); |
1da177e4 LT |
527 | } |
528 | ||
5a7a5555 | 529 | static void __exit police_cleanup_module(void) |
1da177e4 | 530 | { |
ddf97ccd | 531 | tcf_unregister_action(&act_police_ops, &police_net_ops); |
1da177e4 LT |
532 | } |
533 | ||
534 | module_init(police_init_module); | |
535 | module_exit(police_cleanup_module); |