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Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
77b9900e JP |
2 | /* |
3 | * net/sched/cls_flower.c Flower classifier | |
4 | * | |
5 | * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us> | |
77b9900e JP |
6 | */ |
7 | ||
8 | #include <linux/kernel.h> | |
9 | #include <linux/init.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/rhashtable.h> | |
d9363774 | 12 | #include <linux/workqueue.h> |
06177558 | 13 | #include <linux/refcount.h> |
77b9900e JP |
14 | |
15 | #include <linux/if_ether.h> | |
16 | #include <linux/in6.h> | |
17 | #include <linux/ip.h> | |
a577d8f7 | 18 | #include <linux/mpls.h> |
77b9900e JP |
19 | |
20 | #include <net/sch_generic.h> | |
21 | #include <net/pkt_cls.h> | |
22 | #include <net/ip.h> | |
23 | #include <net/flow_dissector.h> | |
0a6e7778 | 24 | #include <net/geneve.h> |
77b9900e | 25 | |
bc3103f1 AV |
26 | #include <net/dst.h> |
27 | #include <net/dst_metadata.h> | |
28 | ||
77b9900e JP |
29 | struct fl_flow_key { |
30 | int indev_ifindex; | |
42aecaa9 | 31 | struct flow_dissector_key_control control; |
bc3103f1 | 32 | struct flow_dissector_key_control enc_control; |
77b9900e JP |
33 | struct flow_dissector_key_basic basic; |
34 | struct flow_dissector_key_eth_addrs eth; | |
9399ae9a | 35 | struct flow_dissector_key_vlan vlan; |
d64efd09 | 36 | struct flow_dissector_key_vlan cvlan; |
77b9900e | 37 | union { |
c3f83241 | 38 | struct flow_dissector_key_ipv4_addrs ipv4; |
77b9900e JP |
39 | struct flow_dissector_key_ipv6_addrs ipv6; |
40 | }; | |
41 | struct flow_dissector_key_ports tp; | |
7b684884 | 42 | struct flow_dissector_key_icmp icmp; |
99d31326 | 43 | struct flow_dissector_key_arp arp; |
bc3103f1 AV |
44 | struct flow_dissector_key_keyid enc_key_id; |
45 | union { | |
46 | struct flow_dissector_key_ipv4_addrs enc_ipv4; | |
47 | struct flow_dissector_key_ipv6_addrs enc_ipv6; | |
48 | }; | |
f4d997fd | 49 | struct flow_dissector_key_ports enc_tp; |
a577d8f7 | 50 | struct flow_dissector_key_mpls mpls; |
fdfc7dd6 | 51 | struct flow_dissector_key_tcp tcp; |
4d80cc0a | 52 | struct flow_dissector_key_ip ip; |
0e2c17b6 | 53 | struct flow_dissector_key_ip enc_ip; |
0a6e7778 | 54 | struct flow_dissector_key_enc_opts enc_opts; |
5c72299f AN |
55 | struct flow_dissector_key_ports tp_min; |
56 | struct flow_dissector_key_ports tp_max; | |
77b9900e JP |
57 | } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ |
58 | ||
59 | struct fl_flow_mask_range { | |
60 | unsigned short int start; | |
61 | unsigned short int end; | |
62 | }; | |
63 | ||
64 | struct fl_flow_mask { | |
65 | struct fl_flow_key key; | |
66 | struct fl_flow_mask_range range; | |
5c72299f | 67 | u32 flags; |
05cd271f PB |
68 | struct rhash_head ht_node; |
69 | struct rhashtable ht; | |
70 | struct rhashtable_params filter_ht_params; | |
71 | struct flow_dissector dissector; | |
72 | struct list_head filters; | |
44a5cd43 | 73 | struct rcu_work rwork; |
05cd271f | 74 | struct list_head list; |
f48ef4d5 | 75 | refcount_t refcnt; |
77b9900e JP |
76 | }; |
77 | ||
b95ec7eb JP |
78 | struct fl_flow_tmplt { |
79 | struct fl_flow_key dummy_key; | |
80 | struct fl_flow_key mask; | |
81 | struct flow_dissector dissector; | |
82 | struct tcf_chain *chain; | |
83 | }; | |
84 | ||
77b9900e JP |
85 | struct cls_fl_head { |
86 | struct rhashtable ht; | |
259e60f9 | 87 | spinlock_t masks_lock; /* Protect masks list */ |
05cd271f | 88 | struct list_head masks; |
c049d56e | 89 | struct list_head hw_filters; |
aaa908ff | 90 | struct rcu_work rwork; |
c15ab236 | 91 | struct idr handle_idr; |
77b9900e JP |
92 | }; |
93 | ||
94 | struct cls_fl_filter { | |
05cd271f | 95 | struct fl_flow_mask *mask; |
77b9900e JP |
96 | struct rhash_head ht_node; |
97 | struct fl_flow_key mkey; | |
98 | struct tcf_exts exts; | |
99 | struct tcf_result res; | |
100 | struct fl_flow_key key; | |
101 | struct list_head list; | |
c049d56e | 102 | struct list_head hw_list; |
77b9900e | 103 | u32 handle; |
e69985c6 | 104 | u32 flags; |
86c55361 | 105 | u32 in_hw_count; |
aaa908ff | 106 | struct rcu_work rwork; |
7091d8c7 | 107 | struct net_device *hw_dev; |
06177558 VB |
108 | /* Flower classifier is unlocked, which means that its reference counter |
109 | * can be changed concurrently without any kind of external | |
110 | * synchronization. Use atomic reference counter to be concurrency-safe. | |
111 | */ | |
112 | refcount_t refcnt; | |
b2552b8c | 113 | bool deleted; |
77b9900e JP |
114 | }; |
115 | ||
05cd271f PB |
116 | static const struct rhashtable_params mask_ht_params = { |
117 | .key_offset = offsetof(struct fl_flow_mask, key), | |
118 | .key_len = sizeof(struct fl_flow_key), | |
119 | .head_offset = offsetof(struct fl_flow_mask, ht_node), | |
120 | .automatic_shrinking = true, | |
121 | }; | |
122 | ||
77b9900e JP |
123 | static unsigned short int fl_mask_range(const struct fl_flow_mask *mask) |
124 | { | |
125 | return mask->range.end - mask->range.start; | |
126 | } | |
127 | ||
128 | static void fl_mask_update_range(struct fl_flow_mask *mask) | |
129 | { | |
130 | const u8 *bytes = (const u8 *) &mask->key; | |
131 | size_t size = sizeof(mask->key); | |
05cd271f | 132 | size_t i, first = 0, last; |
77b9900e | 133 | |
05cd271f PB |
134 | for (i = 0; i < size; i++) { |
135 | if (bytes[i]) { | |
136 | first = i; | |
137 | break; | |
138 | } | |
139 | } | |
140 | last = first; | |
141 | for (i = size - 1; i != first; i--) { | |
77b9900e | 142 | if (bytes[i]) { |
77b9900e | 143 | last = i; |
05cd271f | 144 | break; |
77b9900e JP |
145 | } |
146 | } | |
147 | mask->range.start = rounddown(first, sizeof(long)); | |
148 | mask->range.end = roundup(last + 1, sizeof(long)); | |
149 | } | |
150 | ||
151 | static void *fl_key_get_start(struct fl_flow_key *key, | |
152 | const struct fl_flow_mask *mask) | |
153 | { | |
154 | return (u8 *) key + mask->range.start; | |
155 | } | |
156 | ||
157 | static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key, | |
158 | struct fl_flow_mask *mask) | |
159 | { | |
160 | const long *lkey = fl_key_get_start(key, mask); | |
161 | const long *lmask = fl_key_get_start(&mask->key, mask); | |
162 | long *lmkey = fl_key_get_start(mkey, mask); | |
163 | int i; | |
164 | ||
165 | for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) | |
166 | *lmkey++ = *lkey++ & *lmask++; | |
167 | } | |
168 | ||
b95ec7eb JP |
169 | static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt, |
170 | struct fl_flow_mask *mask) | |
171 | { | |
172 | const long *lmask = fl_key_get_start(&mask->key, mask); | |
173 | const long *ltmplt; | |
174 | int i; | |
175 | ||
176 | if (!tmplt) | |
177 | return true; | |
178 | ltmplt = fl_key_get_start(&tmplt->mask, mask); | |
179 | for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) { | |
180 | if (~*ltmplt++ & *lmask++) | |
181 | return false; | |
182 | } | |
183 | return true; | |
184 | } | |
185 | ||
77b9900e JP |
186 | static void fl_clear_masked_range(struct fl_flow_key *key, |
187 | struct fl_flow_mask *mask) | |
188 | { | |
189 | memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask)); | |
190 | } | |
191 | ||
5c72299f AN |
192 | static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter, |
193 | struct fl_flow_key *key, | |
194 | struct fl_flow_key *mkey) | |
195 | { | |
196 | __be16 min_mask, max_mask, min_val, max_val; | |
197 | ||
198 | min_mask = htons(filter->mask->key.tp_min.dst); | |
199 | max_mask = htons(filter->mask->key.tp_max.dst); | |
200 | min_val = htons(filter->key.tp_min.dst); | |
201 | max_val = htons(filter->key.tp_max.dst); | |
202 | ||
203 | if (min_mask && max_mask) { | |
204 | if (htons(key->tp.dst) < min_val || | |
205 | htons(key->tp.dst) > max_val) | |
206 | return false; | |
207 | ||
208 | /* skb does not have min and max values */ | |
209 | mkey->tp_min.dst = filter->mkey.tp_min.dst; | |
210 | mkey->tp_max.dst = filter->mkey.tp_max.dst; | |
211 | } | |
212 | return true; | |
213 | } | |
214 | ||
215 | static bool fl_range_port_src_cmp(struct cls_fl_filter *filter, | |
216 | struct fl_flow_key *key, | |
217 | struct fl_flow_key *mkey) | |
218 | { | |
219 | __be16 min_mask, max_mask, min_val, max_val; | |
220 | ||
221 | min_mask = htons(filter->mask->key.tp_min.src); | |
222 | max_mask = htons(filter->mask->key.tp_max.src); | |
223 | min_val = htons(filter->key.tp_min.src); | |
224 | max_val = htons(filter->key.tp_max.src); | |
225 | ||
226 | if (min_mask && max_mask) { | |
227 | if (htons(key->tp.src) < min_val || | |
228 | htons(key->tp.src) > max_val) | |
229 | return false; | |
230 | ||
231 | /* skb does not have min and max values */ | |
232 | mkey->tp_min.src = filter->mkey.tp_min.src; | |
233 | mkey->tp_max.src = filter->mkey.tp_max.src; | |
234 | } | |
235 | return true; | |
236 | } | |
237 | ||
238 | static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask, | |
239 | struct fl_flow_key *mkey) | |
a3308d8f | 240 | { |
05cd271f PB |
241 | return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask), |
242 | mask->filter_ht_params); | |
a3308d8f PB |
243 | } |
244 | ||
5c72299f AN |
245 | static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask, |
246 | struct fl_flow_key *mkey, | |
247 | struct fl_flow_key *key) | |
248 | { | |
249 | struct cls_fl_filter *filter, *f; | |
250 | ||
251 | list_for_each_entry_rcu(filter, &mask->filters, list) { | |
252 | if (!fl_range_port_dst_cmp(filter, key, mkey)) | |
253 | continue; | |
254 | ||
255 | if (!fl_range_port_src_cmp(filter, key, mkey)) | |
256 | continue; | |
257 | ||
258 | f = __fl_lookup(mask, mkey); | |
259 | if (f) | |
260 | return f; | |
261 | } | |
262 | return NULL; | |
263 | } | |
264 | ||
265 | static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask, | |
266 | struct fl_flow_key *mkey, | |
267 | struct fl_flow_key *key) | |
268 | { | |
269 | if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE)) | |
270 | return fl_lookup_range(mask, mkey, key); | |
271 | ||
272 | return __fl_lookup(mask, mkey); | |
273 | } | |
274 | ||
77b9900e JP |
275 | static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
276 | struct tcf_result *res) | |
277 | { | |
278 | struct cls_fl_head *head = rcu_dereference_bh(tp->root); | |
279 | struct cls_fl_filter *f; | |
05cd271f | 280 | struct fl_flow_mask *mask; |
77b9900e JP |
281 | struct fl_flow_key skb_key; |
282 | struct fl_flow_key skb_mkey; | |
283 | ||
05cd271f PB |
284 | list_for_each_entry_rcu(mask, &head->masks, list) { |
285 | fl_clear_masked_range(&skb_key, mask); | |
bc3103f1 | 286 | |
05cd271f PB |
287 | skb_key.indev_ifindex = skb->skb_iif; |
288 | /* skb_flow_dissect() does not set n_proto in case an unknown | |
289 | * protocol, so do it rather here. | |
290 | */ | |
291 | skb_key.basic.n_proto = skb->protocol; | |
292 | skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key); | |
293 | skb_flow_dissect(skb, &mask->dissector, &skb_key, 0); | |
77b9900e | 294 | |
05cd271f | 295 | fl_set_masked_key(&skb_mkey, &skb_key, mask); |
77b9900e | 296 | |
5c72299f | 297 | f = fl_lookup(mask, &skb_mkey, &skb_key); |
05cd271f PB |
298 | if (f && !tc_skip_sw(f->flags)) { |
299 | *res = f->res; | |
300 | return tcf_exts_exec(skb, &f->exts, res); | |
301 | } | |
77b9900e JP |
302 | } |
303 | return -1; | |
304 | } | |
305 | ||
306 | static int fl_init(struct tcf_proto *tp) | |
307 | { | |
308 | struct cls_fl_head *head; | |
309 | ||
310 | head = kzalloc(sizeof(*head), GFP_KERNEL); | |
311 | if (!head) | |
312 | return -ENOBUFS; | |
313 | ||
259e60f9 | 314 | spin_lock_init(&head->masks_lock); |
05cd271f | 315 | INIT_LIST_HEAD_RCU(&head->masks); |
c049d56e | 316 | INIT_LIST_HEAD(&head->hw_filters); |
77b9900e | 317 | rcu_assign_pointer(tp->root, head); |
c15ab236 | 318 | idr_init(&head->handle_idr); |
77b9900e | 319 | |
05cd271f PB |
320 | return rhashtable_init(&head->ht, &mask_ht_params); |
321 | } | |
322 | ||
44a5cd43 PA |
323 | static void fl_mask_free(struct fl_flow_mask *mask) |
324 | { | |
f48ef4d5 | 325 | WARN_ON(!list_empty(&mask->filters)); |
44a5cd43 PA |
326 | rhashtable_destroy(&mask->ht); |
327 | kfree(mask); | |
328 | } | |
329 | ||
330 | static void fl_mask_free_work(struct work_struct *work) | |
331 | { | |
332 | struct fl_flow_mask *mask = container_of(to_rcu_work(work), | |
333 | struct fl_flow_mask, rwork); | |
334 | ||
335 | fl_mask_free(mask); | |
336 | } | |
337 | ||
9994677c | 338 | static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask) |
05cd271f | 339 | { |
f48ef4d5 | 340 | if (!refcount_dec_and_test(&mask->refcnt)) |
05cd271f PB |
341 | return false; |
342 | ||
343 | rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params); | |
259e60f9 VB |
344 | |
345 | spin_lock(&head->masks_lock); | |
05cd271f | 346 | list_del_rcu(&mask->list); |
259e60f9 VB |
347 | spin_unlock(&head->masks_lock); |
348 | ||
9994677c | 349 | tcf_queue_work(&mask->rwork, fl_mask_free_work); |
05cd271f PB |
350 | |
351 | return true; | |
77b9900e JP |
352 | } |
353 | ||
c049d56e VB |
354 | static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp) |
355 | { | |
356 | /* Flower classifier only changes root pointer during init and destroy. | |
357 | * Users must obtain reference to tcf_proto instance before calling its | |
358 | * API, so tp->root pointer is protected from concurrent call to | |
359 | * fl_destroy() by reference counting. | |
360 | */ | |
361 | return rcu_dereference_raw(tp->root); | |
362 | } | |
363 | ||
0dadc117 CW |
364 | static void __fl_destroy_filter(struct cls_fl_filter *f) |
365 | { | |
366 | tcf_exts_destroy(&f->exts); | |
367 | tcf_exts_put_net(&f->exts); | |
368 | kfree(f); | |
369 | } | |
370 | ||
0552c8af | 371 | static void fl_destroy_filter_work(struct work_struct *work) |
77b9900e | 372 | { |
aaa908ff CW |
373 | struct cls_fl_filter *f = container_of(to_rcu_work(work), |
374 | struct cls_fl_filter, rwork); | |
77b9900e | 375 | |
0dadc117 | 376 | __fl_destroy_filter(f); |
0552c8af CW |
377 | } |
378 | ||
1b0f8037 | 379 | static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f, |
c24e43d8 | 380 | bool rtnl_held, struct netlink_ext_ack *extack) |
5b33f488 | 381 | { |
de4784ca | 382 | struct tc_cls_flower_offload cls_flower = {}; |
208c0f4b | 383 | struct tcf_block *block = tp->chain->block; |
5b33f488 | 384 | |
c24e43d8 VB |
385 | if (!rtnl_held) |
386 | rtnl_lock(); | |
387 | ||
d6787147 | 388 | tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack); |
de4784ca JP |
389 | cls_flower.command = TC_CLSFLOWER_DESTROY; |
390 | cls_flower.cookie = (unsigned long) f; | |
5b33f488 | 391 | |
aeb3fecd | 392 | tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false); |
3d81e711 | 393 | spin_lock(&tp->lock); |
c049d56e | 394 | list_del_init(&f->hw_list); |
caa72601 | 395 | tcf_block_offload_dec(block, &f->flags); |
3d81e711 | 396 | spin_unlock(&tp->lock); |
c24e43d8 VB |
397 | |
398 | if (!rtnl_held) | |
399 | rtnl_unlock(); | |
5b33f488 AV |
400 | } |
401 | ||
e8eb36cd | 402 | static int fl_hw_replace_filter(struct tcf_proto *tp, |
c24e43d8 | 403 | struct cls_fl_filter *f, bool rtnl_held, |
41002038 | 404 | struct netlink_ext_ack *extack) |
5b33f488 | 405 | { |
c049d56e | 406 | struct cls_fl_head *head = fl_head_dereference(tp); |
de4784ca | 407 | struct tc_cls_flower_offload cls_flower = {}; |
208c0f4b | 408 | struct tcf_block *block = tp->chain->block; |
717503b9 | 409 | bool skip_sw = tc_skip_sw(f->flags); |
c24e43d8 VB |
410 | int err = 0; |
411 | ||
412 | if (!rtnl_held) | |
413 | rtnl_lock(); | |
5b33f488 | 414 | |
e3ab786b | 415 | cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts)); |
c24e43d8 VB |
416 | if (!cls_flower.rule) { |
417 | err = -ENOMEM; | |
418 | goto errout; | |
419 | } | |
8f256622 | 420 | |
d6787147 | 421 | tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack); |
de4784ca JP |
422 | cls_flower.command = TC_CLSFLOWER_REPLACE; |
423 | cls_flower.cookie = (unsigned long) f; | |
8f256622 PNA |
424 | cls_flower.rule->match.dissector = &f->mask->dissector; |
425 | cls_flower.rule->match.mask = &f->mask->key; | |
426 | cls_flower.rule->match.key = &f->mkey; | |
384c181e | 427 | cls_flower.classid = f->res.classid; |
5b33f488 | 428 | |
3a7b6861 PNA |
429 | err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts); |
430 | if (err) { | |
431 | kfree(cls_flower.rule); | |
c24e43d8 | 432 | if (skip_sw) |
1f15bb4f | 433 | NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action"); |
c24e43d8 VB |
434 | else |
435 | err = 0; | |
436 | goto errout; | |
3a7b6861 PNA |
437 | } |
438 | ||
aeb3fecd | 439 | err = tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, skip_sw); |
8f256622 PNA |
440 | kfree(cls_flower.rule); |
441 | ||
717503b9 | 442 | if (err < 0) { |
c24e43d8 VB |
443 | fl_hw_destroy_filter(tp, f, true, NULL); |
444 | goto errout; | |
717503b9 | 445 | } else if (err > 0) { |
31533cba | 446 | f->in_hw_count = err; |
c24e43d8 | 447 | err = 0; |
3d81e711 | 448 | spin_lock(&tp->lock); |
caa72601 | 449 | tcf_block_offload_inc(block, &f->flags); |
3d81e711 | 450 | spin_unlock(&tp->lock); |
717503b9 JP |
451 | } |
452 | ||
c24e43d8 VB |
453 | if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW)) { |
454 | err = -EINVAL; | |
455 | goto errout; | |
456 | } | |
717503b9 | 457 | |
c049d56e VB |
458 | spin_lock(&tp->lock); |
459 | list_add(&f->hw_list, &head->hw_filters); | |
460 | spin_unlock(&tp->lock); | |
c24e43d8 VB |
461 | errout: |
462 | if (!rtnl_held) | |
463 | rtnl_unlock(); | |
464 | ||
465 | return err; | |
5b33f488 AV |
466 | } |
467 | ||
c24e43d8 VB |
468 | static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f, |
469 | bool rtnl_held) | |
10cbc684 | 470 | { |
de4784ca | 471 | struct tc_cls_flower_offload cls_flower = {}; |
208c0f4b | 472 | struct tcf_block *block = tp->chain->block; |
10cbc684 | 473 | |
c24e43d8 VB |
474 | if (!rtnl_held) |
475 | rtnl_lock(); | |
476 | ||
d6787147 | 477 | tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL); |
de4784ca JP |
478 | cls_flower.command = TC_CLSFLOWER_STATS; |
479 | cls_flower.cookie = (unsigned long) f; | |
384c181e | 480 | cls_flower.classid = f->res.classid; |
10cbc684 | 481 | |
aeb3fecd | 482 | tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false); |
3b1903ef PNA |
483 | |
484 | tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes, | |
485 | cls_flower.stats.pkts, | |
486 | cls_flower.stats.lastused); | |
c24e43d8 VB |
487 | |
488 | if (!rtnl_held) | |
489 | rtnl_unlock(); | |
10cbc684 AV |
490 | } |
491 | ||
06177558 VB |
492 | static void __fl_put(struct cls_fl_filter *f) |
493 | { | |
494 | if (!refcount_dec_and_test(&f->refcnt)) | |
495 | return; | |
496 | ||
497 | if (tcf_exts_get_net(&f->exts)) | |
498 | tcf_queue_work(&f->rwork, fl_destroy_filter_work); | |
499 | else | |
500 | __fl_destroy_filter(f); | |
501 | } | |
502 | ||
503 | static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle) | |
504 | { | |
505 | struct cls_fl_filter *f; | |
506 | ||
507 | rcu_read_lock(); | |
508 | f = idr_find(&head->handle_idr, handle); | |
509 | if (f && !refcount_inc_not_zero(&f->refcnt)) | |
510 | f = NULL; | |
511 | rcu_read_unlock(); | |
512 | ||
513 | return f; | |
514 | } | |
515 | ||
516 | static struct cls_fl_filter *fl_get_next_filter(struct tcf_proto *tp, | |
517 | unsigned long *handle) | |
518 | { | |
519 | struct cls_fl_head *head = fl_head_dereference(tp); | |
520 | struct cls_fl_filter *f; | |
521 | ||
522 | rcu_read_lock(); | |
523 | while ((f = idr_get_next_ul(&head->handle_idr, handle))) { | |
524 | /* don't return filters that are being deleted */ | |
525 | if (refcount_inc_not_zero(&f->refcnt)) | |
526 | break; | |
527 | ++(*handle); | |
528 | } | |
529 | rcu_read_unlock(); | |
530 | ||
531 | return f; | |
532 | } | |
533 | ||
b2552b8c | 534 | static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f, |
c24e43d8 VB |
535 | bool *last, bool rtnl_held, |
536 | struct netlink_ext_ack *extack) | |
13fa876e | 537 | { |
e474619a | 538 | struct cls_fl_head *head = fl_head_dereference(tp); |
c15ab236 | 539 | |
b2552b8c VB |
540 | *last = false; |
541 | ||
3d81e711 VB |
542 | spin_lock(&tp->lock); |
543 | if (f->deleted) { | |
544 | spin_unlock(&tp->lock); | |
b2552b8c | 545 | return -ENOENT; |
3d81e711 | 546 | } |
b2552b8c VB |
547 | |
548 | f->deleted = true; | |
549 | rhashtable_remove_fast(&f->mask->ht, &f->ht_node, | |
550 | f->mask->filter_ht_params); | |
9c160941 | 551 | idr_remove(&head->handle_idr, f->handle); |
13fa876e | 552 | list_del_rcu(&f->list); |
3d81e711 VB |
553 | spin_unlock(&tp->lock); |
554 | ||
9994677c | 555 | *last = fl_mask_put(head, f->mask); |
79685219 | 556 | if (!tc_skip_hw(f->flags)) |
c24e43d8 | 557 | fl_hw_destroy_filter(tp, f, rtnl_held, extack); |
13fa876e | 558 | tcf_unbind_filter(tp, &f->res); |
06177558 | 559 | __fl_put(f); |
05cd271f | 560 | |
b2552b8c | 561 | return 0; |
13fa876e RD |
562 | } |
563 | ||
d9363774 DB |
564 | static void fl_destroy_sleepable(struct work_struct *work) |
565 | { | |
aaa908ff CW |
566 | struct cls_fl_head *head = container_of(to_rcu_work(work), |
567 | struct cls_fl_head, | |
568 | rwork); | |
de9dc650 PB |
569 | |
570 | rhashtable_destroy(&head->ht); | |
d9363774 DB |
571 | kfree(head); |
572 | module_put(THIS_MODULE); | |
573 | } | |
574 | ||
12db03b6 VB |
575 | static void fl_destroy(struct tcf_proto *tp, bool rtnl_held, |
576 | struct netlink_ext_ack *extack) | |
77b9900e | 577 | { |
e474619a | 578 | struct cls_fl_head *head = fl_head_dereference(tp); |
05cd271f | 579 | struct fl_flow_mask *mask, *next_mask; |
77b9900e | 580 | struct cls_fl_filter *f, *next; |
b2552b8c | 581 | bool last; |
77b9900e | 582 | |
05cd271f PB |
583 | list_for_each_entry_safe(mask, next_mask, &head->masks, list) { |
584 | list_for_each_entry_safe(f, next, &mask->filters, list) { | |
c24e43d8 | 585 | __fl_delete(tp, f, &last, rtnl_held, extack); |
b2552b8c | 586 | if (last) |
05cd271f PB |
587 | break; |
588 | } | |
589 | } | |
c15ab236 | 590 | idr_destroy(&head->handle_idr); |
d9363774 DB |
591 | |
592 | __module_get(THIS_MODULE); | |
aaa908ff | 593 | tcf_queue_work(&head->rwork, fl_destroy_sleepable); |
77b9900e JP |
594 | } |
595 | ||
06177558 VB |
596 | static void fl_put(struct tcf_proto *tp, void *arg) |
597 | { | |
598 | struct cls_fl_filter *f = arg; | |
599 | ||
600 | __fl_put(f); | |
601 | } | |
602 | ||
8113c095 | 603 | static void *fl_get(struct tcf_proto *tp, u32 handle) |
77b9900e | 604 | { |
e474619a | 605 | struct cls_fl_head *head = fl_head_dereference(tp); |
77b9900e | 606 | |
06177558 | 607 | return __fl_get(head, handle); |
77b9900e JP |
608 | } |
609 | ||
610 | static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = { | |
611 | [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC }, | |
612 | [TCA_FLOWER_CLASSID] = { .type = NLA_U32 }, | |
613 | [TCA_FLOWER_INDEV] = { .type = NLA_STRING, | |
614 | .len = IFNAMSIZ }, | |
615 | [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN }, | |
616 | [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN }, | |
617 | [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN }, | |
618 | [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN }, | |
619 | [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 }, | |
620 | [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 }, | |
621 | [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 }, | |
622 | [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 }, | |
623 | [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 }, | |
624 | [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 }, | |
625 | [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, | |
626 | [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, | |
627 | [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
628 | [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, | |
629 | [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 }, | |
630 | [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 }, | |
b175c3a4 JHS |
631 | [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 }, |
632 | [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 }, | |
9399ae9a HHZ |
633 | [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 }, |
634 | [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 }, | |
635 | [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 }, | |
bc3103f1 AV |
636 | [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 }, |
637 | [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 }, | |
638 | [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 }, | |
639 | [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 }, | |
640 | [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 }, | |
641 | [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, | |
642 | [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, | |
643 | [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
644 | [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, | |
aa72d708 OG |
645 | [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 }, |
646 | [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 }, | |
647 | [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 }, | |
648 | [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 }, | |
5976c5f4 SH |
649 | [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 }, |
650 | [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 }, | |
651 | [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 }, | |
652 | [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 }, | |
f4d997fd HHZ |
653 | [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 }, |
654 | [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 }, | |
655 | [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 }, | |
656 | [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 }, | |
faa3ffce OG |
657 | [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 }, |
658 | [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 }, | |
7b684884 SH |
659 | [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 }, |
660 | [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 }, | |
661 | [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 }, | |
662 | [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 }, | |
663 | [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 }, | |
664 | [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 }, | |
665 | [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 }, | |
666 | [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 }, | |
99d31326 SH |
667 | [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 }, |
668 | [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 }, | |
669 | [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 }, | |
670 | [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 }, | |
671 | [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 }, | |
672 | [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 }, | |
673 | [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN }, | |
674 | [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN }, | |
675 | [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN }, | |
676 | [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN }, | |
a577d8f7 BL |
677 | [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 }, |
678 | [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 }, | |
679 | [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 }, | |
680 | [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 }, | |
fdfc7dd6 JP |
681 | [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 }, |
682 | [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 }, | |
4d80cc0a OG |
683 | [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 }, |
684 | [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 }, | |
685 | [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 }, | |
686 | [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 }, | |
d64efd09 JL |
687 | [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 }, |
688 | [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 }, | |
689 | [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 }, | |
0e2c17b6 OG |
690 | [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 }, |
691 | [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 }, | |
692 | [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 }, | |
693 | [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 }, | |
0a6e7778 PJV |
694 | [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED }, |
695 | [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED }, | |
696 | }; | |
697 | ||
698 | static const struct nla_policy | |
699 | enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = { | |
700 | [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED }, | |
701 | }; | |
702 | ||
703 | static const struct nla_policy | |
704 | geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = { | |
705 | [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 }, | |
706 | [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 }, | |
707 | [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY, | |
708 | .len = 128 }, | |
77b9900e JP |
709 | }; |
710 | ||
711 | static void fl_set_key_val(struct nlattr **tb, | |
712 | void *val, int val_type, | |
713 | void *mask, int mask_type, int len) | |
714 | { | |
715 | if (!tb[val_type]) | |
716 | return; | |
717 | memcpy(val, nla_data(tb[val_type]), len); | |
718 | if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type]) | |
719 | memset(mask, 0xff, len); | |
720 | else | |
721 | memcpy(mask, nla_data(tb[mask_type]), len); | |
722 | } | |
723 | ||
5c72299f AN |
724 | static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key, |
725 | struct fl_flow_key *mask) | |
726 | { | |
727 | fl_set_key_val(tb, &key->tp_min.dst, | |
728 | TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst, | |
729 | TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst)); | |
730 | fl_set_key_val(tb, &key->tp_max.dst, | |
731 | TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst, | |
732 | TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst)); | |
733 | fl_set_key_val(tb, &key->tp_min.src, | |
734 | TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src, | |
735 | TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src)); | |
736 | fl_set_key_val(tb, &key->tp_max.src, | |
737 | TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src, | |
738 | TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src)); | |
739 | ||
740 | if ((mask->tp_min.dst && mask->tp_max.dst && | |
741 | htons(key->tp_max.dst) <= htons(key->tp_min.dst)) || | |
742 | (mask->tp_min.src && mask->tp_max.src && | |
743 | htons(key->tp_max.src) <= htons(key->tp_min.src))) | |
744 | return -EINVAL; | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
1a7fca63 BL |
749 | static int fl_set_key_mpls(struct nlattr **tb, |
750 | struct flow_dissector_key_mpls *key_val, | |
751 | struct flow_dissector_key_mpls *key_mask) | |
a577d8f7 BL |
752 | { |
753 | if (tb[TCA_FLOWER_KEY_MPLS_TTL]) { | |
754 | key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]); | |
755 | key_mask->mpls_ttl = MPLS_TTL_MASK; | |
756 | } | |
757 | if (tb[TCA_FLOWER_KEY_MPLS_BOS]) { | |
1a7fca63 BL |
758 | u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]); |
759 | ||
760 | if (bos & ~MPLS_BOS_MASK) | |
761 | return -EINVAL; | |
762 | key_val->mpls_bos = bos; | |
a577d8f7 BL |
763 | key_mask->mpls_bos = MPLS_BOS_MASK; |
764 | } | |
765 | if (tb[TCA_FLOWER_KEY_MPLS_TC]) { | |
1a7fca63 BL |
766 | u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]); |
767 | ||
768 | if (tc & ~MPLS_TC_MASK) | |
769 | return -EINVAL; | |
770 | key_val->mpls_tc = tc; | |
a577d8f7 BL |
771 | key_mask->mpls_tc = MPLS_TC_MASK; |
772 | } | |
773 | if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) { | |
1a7fca63 BL |
774 | u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]); |
775 | ||
776 | if (label & ~MPLS_LABEL_MASK) | |
777 | return -EINVAL; | |
778 | key_val->mpls_label = label; | |
a577d8f7 BL |
779 | key_mask->mpls_label = MPLS_LABEL_MASK; |
780 | } | |
1a7fca63 | 781 | return 0; |
a577d8f7 BL |
782 | } |
783 | ||
9399ae9a | 784 | static void fl_set_key_vlan(struct nlattr **tb, |
aaab0834 | 785 | __be16 ethertype, |
d64efd09 | 786 | int vlan_id_key, int vlan_prio_key, |
9399ae9a HHZ |
787 | struct flow_dissector_key_vlan *key_val, |
788 | struct flow_dissector_key_vlan *key_mask) | |
789 | { | |
790 | #define VLAN_PRIORITY_MASK 0x7 | |
791 | ||
d64efd09 | 792 | if (tb[vlan_id_key]) { |
9399ae9a | 793 | key_val->vlan_id = |
d64efd09 | 794 | nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK; |
9399ae9a HHZ |
795 | key_mask->vlan_id = VLAN_VID_MASK; |
796 | } | |
d64efd09 | 797 | if (tb[vlan_prio_key]) { |
9399ae9a | 798 | key_val->vlan_priority = |
d64efd09 | 799 | nla_get_u8(tb[vlan_prio_key]) & |
9399ae9a HHZ |
800 | VLAN_PRIORITY_MASK; |
801 | key_mask->vlan_priority = VLAN_PRIORITY_MASK; | |
802 | } | |
aaab0834 JL |
803 | key_val->vlan_tpid = ethertype; |
804 | key_mask->vlan_tpid = cpu_to_be16(~0); | |
9399ae9a HHZ |
805 | } |
806 | ||
faa3ffce OG |
807 | static void fl_set_key_flag(u32 flower_key, u32 flower_mask, |
808 | u32 *dissector_key, u32 *dissector_mask, | |
809 | u32 flower_flag_bit, u32 dissector_flag_bit) | |
810 | { | |
811 | if (flower_mask & flower_flag_bit) { | |
812 | *dissector_mask |= dissector_flag_bit; | |
813 | if (flower_key & flower_flag_bit) | |
814 | *dissector_key |= dissector_flag_bit; | |
815 | } | |
816 | } | |
817 | ||
d9724772 OG |
818 | static int fl_set_key_flags(struct nlattr **tb, |
819 | u32 *flags_key, u32 *flags_mask) | |
faa3ffce OG |
820 | { |
821 | u32 key, mask; | |
822 | ||
d9724772 OG |
823 | /* mask is mandatory for flags */ |
824 | if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) | |
825 | return -EINVAL; | |
faa3ffce OG |
826 | |
827 | key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS])); | |
d9724772 | 828 | mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK])); |
faa3ffce OG |
829 | |
830 | *flags_key = 0; | |
831 | *flags_mask = 0; | |
832 | ||
833 | fl_set_key_flag(key, mask, flags_key, flags_mask, | |
834 | TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT); | |
459d153d PJV |
835 | fl_set_key_flag(key, mask, flags_key, flags_mask, |
836 | TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST, | |
837 | FLOW_DIS_FIRST_FRAG); | |
d9724772 OG |
838 | |
839 | return 0; | |
faa3ffce OG |
840 | } |
841 | ||
0e2c17b6 | 842 | static void fl_set_key_ip(struct nlattr **tb, bool encap, |
4d80cc0a OG |
843 | struct flow_dissector_key_ip *key, |
844 | struct flow_dissector_key_ip *mask) | |
845 | { | |
0e2c17b6 OG |
846 | int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS; |
847 | int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL; | |
848 | int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK; | |
849 | int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK; | |
4d80cc0a | 850 | |
0e2c17b6 OG |
851 | fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)); |
852 | fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)); | |
4d80cc0a OG |
853 | } |
854 | ||
0a6e7778 PJV |
855 | static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key, |
856 | int depth, int option_len, | |
857 | struct netlink_ext_ack *extack) | |
858 | { | |
859 | struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1]; | |
860 | struct nlattr *class = NULL, *type = NULL, *data = NULL; | |
861 | struct geneve_opt *opt; | |
862 | int err, data_len = 0; | |
863 | ||
864 | if (option_len > sizeof(struct geneve_opt)) | |
865 | data_len = option_len - sizeof(struct geneve_opt); | |
866 | ||
867 | opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len]; | |
868 | memset(opt, 0xff, option_len); | |
869 | opt->length = data_len / 4; | |
870 | opt->r1 = 0; | |
871 | opt->r2 = 0; | |
872 | opt->r3 = 0; | |
873 | ||
874 | /* If no mask has been prodived we assume an exact match. */ | |
875 | if (!depth) | |
876 | return sizeof(struct geneve_opt) + data_len; | |
877 | ||
878 | if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) { | |
879 | NL_SET_ERR_MSG(extack, "Non-geneve option type for mask"); | |
880 | return -EINVAL; | |
881 | } | |
882 | ||
8cb08174 JB |
883 | err = nla_parse_nested_deprecated(tb, |
884 | TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX, | |
885 | nla, geneve_opt_policy, extack); | |
0a6e7778 PJV |
886 | if (err < 0) |
887 | return err; | |
888 | ||
889 | /* We are not allowed to omit any of CLASS, TYPE or DATA | |
890 | * fields from the key. | |
891 | */ | |
892 | if (!option_len && | |
893 | (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] || | |
894 | !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] || | |
895 | !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) { | |
896 | NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data"); | |
897 | return -EINVAL; | |
898 | } | |
899 | ||
900 | /* Omitting any of CLASS, TYPE or DATA fields is allowed | |
901 | * for the mask. | |
902 | */ | |
903 | if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) { | |
904 | int new_len = key->enc_opts.len; | |
905 | ||
906 | data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]; | |
907 | data_len = nla_len(data); | |
908 | if (data_len < 4) { | |
909 | NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long"); | |
910 | return -ERANGE; | |
911 | } | |
912 | if (data_len % 4) { | |
913 | NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long"); | |
914 | return -ERANGE; | |
915 | } | |
916 | ||
917 | new_len += sizeof(struct geneve_opt) + data_len; | |
918 | BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX); | |
919 | if (new_len > FLOW_DIS_TUN_OPTS_MAX) { | |
920 | NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size"); | |
921 | return -ERANGE; | |
922 | } | |
923 | opt->length = data_len / 4; | |
924 | memcpy(opt->opt_data, nla_data(data), data_len); | |
925 | } | |
926 | ||
927 | if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) { | |
928 | class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]; | |
929 | opt->opt_class = nla_get_be16(class); | |
930 | } | |
931 | ||
932 | if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) { | |
933 | type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]; | |
934 | opt->type = nla_get_u8(type); | |
935 | } | |
936 | ||
937 | return sizeof(struct geneve_opt) + data_len; | |
938 | } | |
939 | ||
940 | static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key, | |
941 | struct fl_flow_key *mask, | |
942 | struct netlink_ext_ack *extack) | |
943 | { | |
944 | const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL; | |
63c82997 JK |
945 | int err, option_len, key_depth, msk_depth = 0; |
946 | ||
8cb08174 JB |
947 | err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS], |
948 | TCA_FLOWER_KEY_ENC_OPTS_MAX, | |
949 | enc_opts_policy, extack); | |
63c82997 JK |
950 | if (err) |
951 | return err; | |
0a6e7778 PJV |
952 | |
953 | nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]); | |
954 | ||
955 | if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) { | |
8cb08174 JB |
956 | err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK], |
957 | TCA_FLOWER_KEY_ENC_OPTS_MAX, | |
958 | enc_opts_policy, extack); | |
63c82997 JK |
959 | if (err) |
960 | return err; | |
961 | ||
0a6e7778 PJV |
962 | nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]); |
963 | msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]); | |
964 | } | |
965 | ||
966 | nla_for_each_attr(nla_opt_key, nla_enc_key, | |
967 | nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) { | |
968 | switch (nla_type(nla_opt_key)) { | |
969 | case TCA_FLOWER_KEY_ENC_OPTS_GENEVE: | |
970 | option_len = 0; | |
971 | key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT; | |
972 | option_len = fl_set_geneve_opt(nla_opt_key, key, | |
973 | key_depth, option_len, | |
974 | extack); | |
975 | if (option_len < 0) | |
976 | return option_len; | |
977 | ||
978 | key->enc_opts.len += option_len; | |
979 | /* At the same time we need to parse through the mask | |
980 | * in order to verify exact and mask attribute lengths. | |
981 | */ | |
982 | mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT; | |
983 | option_len = fl_set_geneve_opt(nla_opt_msk, mask, | |
984 | msk_depth, option_len, | |
985 | extack); | |
986 | if (option_len < 0) | |
987 | return option_len; | |
988 | ||
989 | mask->enc_opts.len += option_len; | |
990 | if (key->enc_opts.len != mask->enc_opts.len) { | |
991 | NL_SET_ERR_MSG(extack, "Key and mask miss aligned"); | |
992 | return -EINVAL; | |
993 | } | |
994 | ||
995 | if (msk_depth) | |
996 | nla_opt_msk = nla_next(nla_opt_msk, &msk_depth); | |
997 | break; | |
998 | default: | |
999 | NL_SET_ERR_MSG(extack, "Unknown tunnel option type"); | |
1000 | return -EINVAL; | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | return 0; | |
1005 | } | |
1006 | ||
77b9900e | 1007 | static int fl_set_key(struct net *net, struct nlattr **tb, |
1057c55f AA |
1008 | struct fl_flow_key *key, struct fl_flow_key *mask, |
1009 | struct netlink_ext_ack *extack) | |
77b9900e | 1010 | { |
9399ae9a | 1011 | __be16 ethertype; |
d9724772 | 1012 | int ret = 0; |
dd3aa3b5 | 1013 | #ifdef CONFIG_NET_CLS_IND |
77b9900e | 1014 | if (tb[TCA_FLOWER_INDEV]) { |
1057c55f | 1015 | int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack); |
77b9900e JP |
1016 | if (err < 0) |
1017 | return err; | |
1018 | key->indev_ifindex = err; | |
1019 | mask->indev_ifindex = 0xffffffff; | |
1020 | } | |
dd3aa3b5 | 1021 | #endif |
77b9900e JP |
1022 | |
1023 | fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, | |
1024 | mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, | |
1025 | sizeof(key->eth.dst)); | |
1026 | fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, | |
1027 | mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, | |
1028 | sizeof(key->eth.src)); | |
66530bdf | 1029 | |
0b498a52 | 1030 | if (tb[TCA_FLOWER_KEY_ETH_TYPE]) { |
9399ae9a HHZ |
1031 | ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]); |
1032 | ||
aaab0834 | 1033 | if (eth_type_vlan(ethertype)) { |
d64efd09 JL |
1034 | fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID, |
1035 | TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, | |
1036 | &mask->vlan); | |
1037 | ||
5e9a0fe4 JL |
1038 | if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) { |
1039 | ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]); | |
1040 | if (eth_type_vlan(ethertype)) { | |
1041 | fl_set_key_vlan(tb, ethertype, | |
1042 | TCA_FLOWER_KEY_CVLAN_ID, | |
1043 | TCA_FLOWER_KEY_CVLAN_PRIO, | |
1044 | &key->cvlan, &mask->cvlan); | |
1045 | fl_set_key_val(tb, &key->basic.n_proto, | |
1046 | TCA_FLOWER_KEY_CVLAN_ETH_TYPE, | |
1047 | &mask->basic.n_proto, | |
1048 | TCA_FLOWER_UNSPEC, | |
1049 | sizeof(key->basic.n_proto)); | |
1050 | } else { | |
1051 | key->basic.n_proto = ethertype; | |
1052 | mask->basic.n_proto = cpu_to_be16(~0); | |
1053 | } | |
d64efd09 | 1054 | } |
0b498a52 AB |
1055 | } else { |
1056 | key->basic.n_proto = ethertype; | |
1057 | mask->basic.n_proto = cpu_to_be16(~0); | |
1058 | } | |
9399ae9a | 1059 | } |
66530bdf | 1060 | |
77b9900e JP |
1061 | if (key->basic.n_proto == htons(ETH_P_IP) || |
1062 | key->basic.n_proto == htons(ETH_P_IPV6)) { | |
1063 | fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, | |
1064 | &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, | |
1065 | sizeof(key->basic.ip_proto)); | |
0e2c17b6 | 1066 | fl_set_key_ip(tb, false, &key->ip, &mask->ip); |
77b9900e | 1067 | } |
66530bdf JHS |
1068 | |
1069 | if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) { | |
1070 | key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; | |
970bfcd0 | 1071 | mask->control.addr_type = ~0; |
77b9900e JP |
1072 | fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, |
1073 | &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, | |
1074 | sizeof(key->ipv4.src)); | |
1075 | fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, | |
1076 | &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, | |
1077 | sizeof(key->ipv4.dst)); | |
66530bdf JHS |
1078 | } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) { |
1079 | key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; | |
970bfcd0 | 1080 | mask->control.addr_type = ~0; |
77b9900e JP |
1081 | fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, |
1082 | &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, | |
1083 | sizeof(key->ipv6.src)); | |
1084 | fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, | |
1085 | &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, | |
1086 | sizeof(key->ipv6.dst)); | |
1087 | } | |
66530bdf | 1088 | |
77b9900e JP |
1089 | if (key->basic.ip_proto == IPPROTO_TCP) { |
1090 | fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, | |
aa72d708 | 1091 | &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK, |
77b9900e JP |
1092 | sizeof(key->tp.src)); |
1093 | fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, | |
aa72d708 | 1094 | &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK, |
77b9900e | 1095 | sizeof(key->tp.dst)); |
fdfc7dd6 JP |
1096 | fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS, |
1097 | &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK, | |
1098 | sizeof(key->tcp.flags)); | |
77b9900e JP |
1099 | } else if (key->basic.ip_proto == IPPROTO_UDP) { |
1100 | fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, | |
aa72d708 | 1101 | &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK, |
77b9900e JP |
1102 | sizeof(key->tp.src)); |
1103 | fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, | |
aa72d708 | 1104 | &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK, |
77b9900e | 1105 | sizeof(key->tp.dst)); |
5976c5f4 SH |
1106 | } else if (key->basic.ip_proto == IPPROTO_SCTP) { |
1107 | fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC, | |
1108 | &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK, | |
1109 | sizeof(key->tp.src)); | |
1110 | fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST, | |
1111 | &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK, | |
1112 | sizeof(key->tp.dst)); | |
7b684884 SH |
1113 | } else if (key->basic.n_proto == htons(ETH_P_IP) && |
1114 | key->basic.ip_proto == IPPROTO_ICMP) { | |
1115 | fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE, | |
1116 | &mask->icmp.type, | |
1117 | TCA_FLOWER_KEY_ICMPV4_TYPE_MASK, | |
1118 | sizeof(key->icmp.type)); | |
1119 | fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE, | |
1120 | &mask->icmp.code, | |
1121 | TCA_FLOWER_KEY_ICMPV4_CODE_MASK, | |
1122 | sizeof(key->icmp.code)); | |
1123 | } else if (key->basic.n_proto == htons(ETH_P_IPV6) && | |
1124 | key->basic.ip_proto == IPPROTO_ICMPV6) { | |
1125 | fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE, | |
1126 | &mask->icmp.type, | |
1127 | TCA_FLOWER_KEY_ICMPV6_TYPE_MASK, | |
1128 | sizeof(key->icmp.type)); | |
040587af | 1129 | fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE, |
7b684884 | 1130 | &mask->icmp.code, |
040587af | 1131 | TCA_FLOWER_KEY_ICMPV6_CODE_MASK, |
7b684884 | 1132 | sizeof(key->icmp.code)); |
a577d8f7 BL |
1133 | } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) || |
1134 | key->basic.n_proto == htons(ETH_P_MPLS_MC)) { | |
1a7fca63 BL |
1135 | ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls); |
1136 | if (ret) | |
1137 | return ret; | |
99d31326 SH |
1138 | } else if (key->basic.n_proto == htons(ETH_P_ARP) || |
1139 | key->basic.n_proto == htons(ETH_P_RARP)) { | |
1140 | fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP, | |
1141 | &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK, | |
1142 | sizeof(key->arp.sip)); | |
1143 | fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP, | |
1144 | &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK, | |
1145 | sizeof(key->arp.tip)); | |
1146 | fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP, | |
1147 | &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK, | |
1148 | sizeof(key->arp.op)); | |
1149 | fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA, | |
1150 | mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK, | |
1151 | sizeof(key->arp.sha)); | |
1152 | fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA, | |
1153 | mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK, | |
1154 | sizeof(key->arp.tha)); | |
77b9900e JP |
1155 | } |
1156 | ||
5c72299f AN |
1157 | if (key->basic.ip_proto == IPPROTO_TCP || |
1158 | key->basic.ip_proto == IPPROTO_UDP || | |
1159 | key->basic.ip_proto == IPPROTO_SCTP) { | |
1160 | ret = fl_set_key_port_range(tb, key, mask); | |
1161 | if (ret) | |
1162 | return ret; | |
1163 | } | |
1164 | ||
bc3103f1 AV |
1165 | if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] || |
1166 | tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) { | |
1167 | key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; | |
970bfcd0 | 1168 | mask->enc_control.addr_type = ~0; |
bc3103f1 AV |
1169 | fl_set_key_val(tb, &key->enc_ipv4.src, |
1170 | TCA_FLOWER_KEY_ENC_IPV4_SRC, | |
1171 | &mask->enc_ipv4.src, | |
1172 | TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, | |
1173 | sizeof(key->enc_ipv4.src)); | |
1174 | fl_set_key_val(tb, &key->enc_ipv4.dst, | |
1175 | TCA_FLOWER_KEY_ENC_IPV4_DST, | |
1176 | &mask->enc_ipv4.dst, | |
1177 | TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, | |
1178 | sizeof(key->enc_ipv4.dst)); | |
1179 | } | |
1180 | ||
1181 | if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] || | |
1182 | tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) { | |
1183 | key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; | |
970bfcd0 | 1184 | mask->enc_control.addr_type = ~0; |
bc3103f1 AV |
1185 | fl_set_key_val(tb, &key->enc_ipv6.src, |
1186 | TCA_FLOWER_KEY_ENC_IPV6_SRC, | |
1187 | &mask->enc_ipv6.src, | |
1188 | TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, | |
1189 | sizeof(key->enc_ipv6.src)); | |
1190 | fl_set_key_val(tb, &key->enc_ipv6.dst, | |
1191 | TCA_FLOWER_KEY_ENC_IPV6_DST, | |
1192 | &mask->enc_ipv6.dst, | |
1193 | TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, | |
1194 | sizeof(key->enc_ipv6.dst)); | |
1195 | } | |
1196 | ||
1197 | fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID, | |
eb523f42 | 1198 | &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC, |
bc3103f1 AV |
1199 | sizeof(key->enc_key_id.keyid)); |
1200 | ||
f4d997fd HHZ |
1201 | fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT, |
1202 | &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK, | |
1203 | sizeof(key->enc_tp.src)); | |
1204 | ||
1205 | fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, | |
1206 | &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK, | |
1207 | sizeof(key->enc_tp.dst)); | |
1208 | ||
0e2c17b6 OG |
1209 | fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip); |
1210 | ||
0a6e7778 PJV |
1211 | if (tb[TCA_FLOWER_KEY_ENC_OPTS]) { |
1212 | ret = fl_set_enc_opt(tb, key, mask, extack); | |
1213 | if (ret) | |
1214 | return ret; | |
1215 | } | |
1216 | ||
d9724772 OG |
1217 | if (tb[TCA_FLOWER_KEY_FLAGS]) |
1218 | ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags); | |
faa3ffce | 1219 | |
d9724772 | 1220 | return ret; |
77b9900e JP |
1221 | } |
1222 | ||
05cd271f PB |
1223 | static void fl_mask_copy(struct fl_flow_mask *dst, |
1224 | struct fl_flow_mask *src) | |
77b9900e | 1225 | { |
05cd271f PB |
1226 | const void *psrc = fl_key_get_start(&src->key, src); |
1227 | void *pdst = fl_key_get_start(&dst->key, src); | |
77b9900e | 1228 | |
05cd271f PB |
1229 | memcpy(pdst, psrc, fl_mask_range(src)); |
1230 | dst->range = src->range; | |
77b9900e JP |
1231 | } |
1232 | ||
1233 | static const struct rhashtable_params fl_ht_params = { | |
1234 | .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */ | |
1235 | .head_offset = offsetof(struct cls_fl_filter, ht_node), | |
1236 | .automatic_shrinking = true, | |
1237 | }; | |
1238 | ||
05cd271f | 1239 | static int fl_init_mask_hashtable(struct fl_flow_mask *mask) |
77b9900e | 1240 | { |
05cd271f PB |
1241 | mask->filter_ht_params = fl_ht_params; |
1242 | mask->filter_ht_params.key_len = fl_mask_range(mask); | |
1243 | mask->filter_ht_params.key_offset += mask->range.start; | |
77b9900e | 1244 | |
05cd271f | 1245 | return rhashtable_init(&mask->ht, &mask->filter_ht_params); |
77b9900e JP |
1246 | } |
1247 | ||
1248 | #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member) | |
cb205a81 | 1249 | #define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member) |
77b9900e | 1250 | |
339ba878 HHZ |
1251 | #define FL_KEY_IS_MASKED(mask, member) \ |
1252 | memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \ | |
1253 | 0, FL_KEY_MEMBER_SIZE(member)) \ | |
77b9900e JP |
1254 | |
1255 | #define FL_KEY_SET(keys, cnt, id, member) \ | |
1256 | do { \ | |
1257 | keys[cnt].key_id = id; \ | |
1258 | keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \ | |
1259 | cnt++; \ | |
1260 | } while(0); | |
1261 | ||
339ba878 | 1262 | #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \ |
77b9900e | 1263 | do { \ |
339ba878 | 1264 | if (FL_KEY_IS_MASKED(mask, member)) \ |
77b9900e JP |
1265 | FL_KEY_SET(keys, cnt, id, member); \ |
1266 | } while(0); | |
1267 | ||
33fb5cba JP |
1268 | static void fl_init_dissector(struct flow_dissector *dissector, |
1269 | struct fl_flow_key *mask) | |
77b9900e JP |
1270 | { |
1271 | struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX]; | |
1272 | size_t cnt = 0; | |
1273 | ||
42aecaa9 | 1274 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control); |
77b9900e | 1275 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic); |
33fb5cba | 1276 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
339ba878 | 1277 | FLOW_DISSECTOR_KEY_ETH_ADDRS, eth); |
33fb5cba | 1278 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
339ba878 | 1279 | FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4); |
33fb5cba | 1280 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
339ba878 | 1281 | FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6); |
5c72299f AN |
1282 | if (FL_KEY_IS_MASKED(mask, tp) || |
1283 | FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max)) | |
1284 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp); | |
33fb5cba | 1285 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
4d80cc0a | 1286 | FLOW_DISSECTOR_KEY_IP, ip); |
33fb5cba | 1287 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
fdfc7dd6 | 1288 | FLOW_DISSECTOR_KEY_TCP, tcp); |
33fb5cba | 1289 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
7b684884 | 1290 | FLOW_DISSECTOR_KEY_ICMP, icmp); |
33fb5cba | 1291 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
99d31326 | 1292 | FLOW_DISSECTOR_KEY_ARP, arp); |
33fb5cba | 1293 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
a577d8f7 | 1294 | FLOW_DISSECTOR_KEY_MPLS, mpls); |
33fb5cba | 1295 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
9399ae9a | 1296 | FLOW_DISSECTOR_KEY_VLAN, vlan); |
33fb5cba | 1297 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
d64efd09 | 1298 | FLOW_DISSECTOR_KEY_CVLAN, cvlan); |
33fb5cba | 1299 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
519d1052 | 1300 | FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id); |
33fb5cba | 1301 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
519d1052 | 1302 | FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4); |
33fb5cba | 1303 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
519d1052 | 1304 | FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6); |
33fb5cba JP |
1305 | if (FL_KEY_IS_MASKED(mask, enc_ipv4) || |
1306 | FL_KEY_IS_MASKED(mask, enc_ipv6)) | |
519d1052 HHZ |
1307 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL, |
1308 | enc_control); | |
33fb5cba | 1309 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
f4d997fd | 1310 | FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp); |
33fb5cba | 1311 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
0e2c17b6 | 1312 | FLOW_DISSECTOR_KEY_ENC_IP, enc_ip); |
0a6e7778 PJV |
1313 | FL_KEY_SET_IF_MASKED(mask, keys, cnt, |
1314 | FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts); | |
77b9900e | 1315 | |
33fb5cba | 1316 | skb_flow_dissector_init(dissector, keys, cnt); |
05cd271f PB |
1317 | } |
1318 | ||
1319 | static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head, | |
1320 | struct fl_flow_mask *mask) | |
1321 | { | |
1322 | struct fl_flow_mask *newmask; | |
1323 | int err; | |
1324 | ||
1325 | newmask = kzalloc(sizeof(*newmask), GFP_KERNEL); | |
1326 | if (!newmask) | |
1327 | return ERR_PTR(-ENOMEM); | |
1328 | ||
1329 | fl_mask_copy(newmask, mask); | |
1330 | ||
5c72299f AN |
1331 | if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) || |
1332 | (newmask->key.tp_min.src && newmask->key.tp_max.src)) | |
1333 | newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE; | |
1334 | ||
05cd271f PB |
1335 | err = fl_init_mask_hashtable(newmask); |
1336 | if (err) | |
1337 | goto errout_free; | |
1338 | ||
33fb5cba | 1339 | fl_init_dissector(&newmask->dissector, &newmask->key); |
05cd271f PB |
1340 | |
1341 | INIT_LIST_HEAD_RCU(&newmask->filters); | |
1342 | ||
f48ef4d5 | 1343 | refcount_set(&newmask->refcnt, 1); |
195c234d VB |
1344 | err = rhashtable_replace_fast(&head->ht, &mask->ht_node, |
1345 | &newmask->ht_node, mask_ht_params); | |
05cd271f PB |
1346 | if (err) |
1347 | goto errout_destroy; | |
1348 | ||
195c234d VB |
1349 | /* Wait until any potential concurrent users of mask are finished */ |
1350 | synchronize_rcu(); | |
1351 | ||
259e60f9 | 1352 | spin_lock(&head->masks_lock); |
05cd271f | 1353 | list_add_tail_rcu(&newmask->list, &head->masks); |
259e60f9 | 1354 | spin_unlock(&head->masks_lock); |
05cd271f PB |
1355 | |
1356 | return newmask; | |
1357 | ||
1358 | errout_destroy: | |
1359 | rhashtable_destroy(&newmask->ht); | |
1360 | errout_free: | |
1361 | kfree(newmask); | |
1362 | ||
1363 | return ERR_PTR(err); | |
77b9900e JP |
1364 | } |
1365 | ||
1366 | static int fl_check_assign_mask(struct cls_fl_head *head, | |
05cd271f PB |
1367 | struct cls_fl_filter *fnew, |
1368 | struct cls_fl_filter *fold, | |
77b9900e JP |
1369 | struct fl_flow_mask *mask) |
1370 | { | |
05cd271f | 1371 | struct fl_flow_mask *newmask; |
f48ef4d5 | 1372 | int ret = 0; |
77b9900e | 1373 | |
f48ef4d5 | 1374 | rcu_read_lock(); |
195c234d VB |
1375 | |
1376 | /* Insert mask as temporary node to prevent concurrent creation of mask | |
1377 | * with same key. Any concurrent lookups with same key will return | |
1378 | * -EAGAIN because mask's refcnt is zero. It is safe to insert | |
1379 | * stack-allocated 'mask' to masks hash table because we call | |
1380 | * synchronize_rcu() before returning from this function (either in case | |
1381 | * of error or after replacing it with heap-allocated mask in | |
1382 | * fl_create_new_mask()). | |
1383 | */ | |
1384 | fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht, | |
1385 | &mask->ht_node, | |
1386 | mask_ht_params); | |
05cd271f | 1387 | if (!fnew->mask) { |
f48ef4d5 VB |
1388 | rcu_read_unlock(); |
1389 | ||
195c234d VB |
1390 | if (fold) { |
1391 | ret = -EINVAL; | |
1392 | goto errout_cleanup; | |
1393 | } | |
77b9900e | 1394 | |
05cd271f | 1395 | newmask = fl_create_new_mask(head, mask); |
195c234d VB |
1396 | if (IS_ERR(newmask)) { |
1397 | ret = PTR_ERR(newmask); | |
1398 | goto errout_cleanup; | |
1399 | } | |
77b9900e | 1400 | |
05cd271f | 1401 | fnew->mask = newmask; |
f48ef4d5 | 1402 | return 0; |
195c234d VB |
1403 | } else if (IS_ERR(fnew->mask)) { |
1404 | ret = PTR_ERR(fnew->mask); | |
f6521c58 | 1405 | } else if (fold && fold->mask != fnew->mask) { |
f48ef4d5 VB |
1406 | ret = -EINVAL; |
1407 | } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) { | |
1408 | /* Mask was deleted concurrently, try again */ | |
1409 | ret = -EAGAIN; | |
05cd271f | 1410 | } |
f48ef4d5 VB |
1411 | rcu_read_unlock(); |
1412 | return ret; | |
195c234d VB |
1413 | |
1414 | errout_cleanup: | |
1415 | rhashtable_remove_fast(&head->ht, &mask->ht_node, | |
1416 | mask_ht_params); | |
1417 | /* Wait until any potential concurrent users of mask are finished */ | |
1418 | synchronize_rcu(); | |
1419 | return ret; | |
77b9900e JP |
1420 | } |
1421 | ||
1422 | static int fl_set_parms(struct net *net, struct tcf_proto *tp, | |
1423 | struct cls_fl_filter *f, struct fl_flow_mask *mask, | |
1424 | unsigned long base, struct nlattr **tb, | |
50a56190 | 1425 | struct nlattr *est, bool ovr, |
c24e43d8 | 1426 | struct fl_flow_tmplt *tmplt, bool rtnl_held, |
50a56190 | 1427 | struct netlink_ext_ack *extack) |
77b9900e | 1428 | { |
77b9900e JP |
1429 | int err; |
1430 | ||
c24e43d8 | 1431 | err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held, |
ec6743a1 | 1432 | extack); |
77b9900e JP |
1433 | if (err < 0) |
1434 | return err; | |
1435 | ||
1436 | if (tb[TCA_FLOWER_CLASSID]) { | |
1437 | f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]); | |
c24e43d8 VB |
1438 | if (!rtnl_held) |
1439 | rtnl_lock(); | |
77b9900e | 1440 | tcf_bind_filter(tp, &f->res, base); |
c24e43d8 VB |
1441 | if (!rtnl_held) |
1442 | rtnl_unlock(); | |
77b9900e JP |
1443 | } |
1444 | ||
1057c55f | 1445 | err = fl_set_key(net, tb, &f->key, &mask->key, extack); |
77b9900e | 1446 | if (err) |
45507529 | 1447 | return err; |
77b9900e JP |
1448 | |
1449 | fl_mask_update_range(mask); | |
1450 | fl_set_masked_key(&f->mkey, &f->key, mask); | |
1451 | ||
b95ec7eb JP |
1452 | if (!fl_mask_fits_tmplt(tmplt, mask)) { |
1453 | NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template"); | |
1454 | return -EINVAL; | |
1455 | } | |
1456 | ||
77b9900e | 1457 | return 0; |
77b9900e JP |
1458 | } |
1459 | ||
1f17f774 VB |
1460 | static int fl_ht_insert_unique(struct cls_fl_filter *fnew, |
1461 | struct cls_fl_filter *fold, | |
1462 | bool *in_ht) | |
1463 | { | |
1464 | struct fl_flow_mask *mask = fnew->mask; | |
1465 | int err; | |
1466 | ||
9e35552a VB |
1467 | err = rhashtable_lookup_insert_fast(&mask->ht, |
1468 | &fnew->ht_node, | |
1469 | mask->filter_ht_params); | |
1f17f774 VB |
1470 | if (err) { |
1471 | *in_ht = false; | |
1472 | /* It is okay if filter with same key exists when | |
1473 | * overwriting. | |
1474 | */ | |
1475 | return fold && err == -EEXIST ? 0 : err; | |
1476 | } | |
1477 | ||
1478 | *in_ht = true; | |
1479 | return 0; | |
1480 | } | |
1481 | ||
77b9900e JP |
1482 | static int fl_change(struct net *net, struct sk_buff *in_skb, |
1483 | struct tcf_proto *tp, unsigned long base, | |
1484 | u32 handle, struct nlattr **tca, | |
12db03b6 VB |
1485 | void **arg, bool ovr, bool rtnl_held, |
1486 | struct netlink_ext_ack *extack) | |
77b9900e | 1487 | { |
e474619a | 1488 | struct cls_fl_head *head = fl_head_dereference(tp); |
8113c095 | 1489 | struct cls_fl_filter *fold = *arg; |
77b9900e | 1490 | struct cls_fl_filter *fnew; |
2cddd201 | 1491 | struct fl_flow_mask *mask; |
39b7b6a6 | 1492 | struct nlattr **tb; |
1f17f774 | 1493 | bool in_ht; |
77b9900e JP |
1494 | int err; |
1495 | ||
06177558 VB |
1496 | if (!tca[TCA_OPTIONS]) { |
1497 | err = -EINVAL; | |
1498 | goto errout_fold; | |
1499 | } | |
77b9900e | 1500 | |
2cddd201 | 1501 | mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL); |
06177558 VB |
1502 | if (!mask) { |
1503 | err = -ENOBUFS; | |
1504 | goto errout_fold; | |
1505 | } | |
39b7b6a6 | 1506 | |
2cddd201 IV |
1507 | tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL); |
1508 | if (!tb) { | |
1509 | err = -ENOBUFS; | |
1510 | goto errout_mask_alloc; | |
1511 | } | |
1512 | ||
8cb08174 JB |
1513 | err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX, |
1514 | tca[TCA_OPTIONS], fl_policy, NULL); | |
77b9900e | 1515 | if (err < 0) |
39b7b6a6 | 1516 | goto errout_tb; |
77b9900e | 1517 | |
39b7b6a6 AB |
1518 | if (fold && handle && fold->handle != handle) { |
1519 | err = -EINVAL; | |
1520 | goto errout_tb; | |
1521 | } | |
77b9900e JP |
1522 | |
1523 | fnew = kzalloc(sizeof(*fnew), GFP_KERNEL); | |
39b7b6a6 AB |
1524 | if (!fnew) { |
1525 | err = -ENOBUFS; | |
1526 | goto errout_tb; | |
1527 | } | |
c049d56e | 1528 | INIT_LIST_HEAD(&fnew->hw_list); |
06177558 | 1529 | refcount_set(&fnew->refcnt, 1); |
77b9900e | 1530 | |
14215108 | 1531 | err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0); |
b9a24bb7 WC |
1532 | if (err < 0) |
1533 | goto errout; | |
77b9900e | 1534 | |
e69985c6 AV |
1535 | if (tb[TCA_FLOWER_FLAGS]) { |
1536 | fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]); | |
1537 | ||
1538 | if (!tc_flags_valid(fnew->flags)) { | |
1539 | err = -EINVAL; | |
ecb3dea4 | 1540 | goto errout; |
e69985c6 AV |
1541 | } |
1542 | } | |
5b33f488 | 1543 | |
2cddd201 | 1544 | err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr, |
c24e43d8 | 1545 | tp->chain->tmplt_priv, rtnl_held, extack); |
77b9900e | 1546 | if (err) |
ecb3dea4 | 1547 | goto errout; |
77b9900e | 1548 | |
2cddd201 | 1549 | err = fl_check_assign_mask(head, fnew, fold, mask); |
77b9900e | 1550 | if (err) |
ecb3dea4 VB |
1551 | goto errout; |
1552 | ||
1f17f774 VB |
1553 | err = fl_ht_insert_unique(fnew, fold, &in_ht); |
1554 | if (err) | |
1555 | goto errout_mask; | |
1556 | ||
79685219 | 1557 | if (!tc_skip_hw(fnew->flags)) { |
c24e43d8 | 1558 | err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack); |
79685219 | 1559 | if (err) |
1f17f774 | 1560 | goto errout_ht; |
79685219 | 1561 | } |
5b33f488 | 1562 | |
55593960 OG |
1563 | if (!tc_in_hw(fnew->flags)) |
1564 | fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW; | |
1565 | ||
3d81e711 VB |
1566 | spin_lock(&tp->lock); |
1567 | ||
272ffaad VB |
1568 | /* tp was deleted concurrently. -EAGAIN will cause caller to lookup |
1569 | * proto again or create new one, if necessary. | |
1570 | */ | |
1571 | if (tp->deleting) { | |
1572 | err = -EAGAIN; | |
1573 | goto errout_hw; | |
1574 | } | |
1575 | ||
5b33f488 | 1576 | if (fold) { |
b2552b8c VB |
1577 | /* Fold filter was deleted concurrently. Retry lookup. */ |
1578 | if (fold->deleted) { | |
1579 | err = -EAGAIN; | |
1580 | goto errout_hw; | |
1581 | } | |
1582 | ||
620da486 VB |
1583 | fnew->handle = handle; |
1584 | ||
1f17f774 VB |
1585 | if (!in_ht) { |
1586 | struct rhashtable_params params = | |
1587 | fnew->mask->filter_ht_params; | |
1588 | ||
1589 | err = rhashtable_insert_fast(&fnew->mask->ht, | |
1590 | &fnew->ht_node, | |
1591 | params); | |
1592 | if (err) | |
1593 | goto errout_hw; | |
1594 | in_ht = true; | |
1595 | } | |
620da486 | 1596 | |
c049d56e | 1597 | refcount_inc(&fnew->refcnt); |
599d2570 RD |
1598 | rhashtable_remove_fast(&fold->mask->ht, |
1599 | &fold->ht_node, | |
1600 | fold->mask->filter_ht_params); | |
234a4624 | 1601 | idr_replace(&head->handle_idr, fnew, fnew->handle); |
ff3532f2 | 1602 | list_replace_rcu(&fold->list, &fnew->list); |
b2552b8c | 1603 | fold->deleted = true; |
620da486 | 1604 | |
3d81e711 VB |
1605 | spin_unlock(&tp->lock); |
1606 | ||
9994677c | 1607 | fl_mask_put(head, fold->mask); |
620da486 | 1608 | if (!tc_skip_hw(fold->flags)) |
c24e43d8 | 1609 | fl_hw_destroy_filter(tp, fold, rtnl_held, NULL); |
77b9900e | 1610 | tcf_unbind_filter(tp, &fold->res); |
06177558 VB |
1611 | /* Caller holds reference to fold, so refcnt is always > 0 |
1612 | * after this. | |
1613 | */ | |
1614 | refcount_dec(&fold->refcnt); | |
1615 | __fl_put(fold); | |
77b9900e | 1616 | } else { |
620da486 VB |
1617 | if (handle) { |
1618 | /* user specifies a handle and it doesn't exist */ | |
1619 | err = idr_alloc_u32(&head->handle_idr, fnew, &handle, | |
1620 | handle, GFP_ATOMIC); | |
9a2d9389 VB |
1621 | |
1622 | /* Filter with specified handle was concurrently | |
1623 | * inserted after initial check in cls_api. This is not | |
1624 | * necessarily an error if NLM_F_EXCL is not set in | |
1625 | * message flags. Returning EAGAIN will cause cls_api to | |
1626 | * try to update concurrently inserted rule. | |
1627 | */ | |
1628 | if (err == -ENOSPC) | |
1629 | err = -EAGAIN; | |
620da486 VB |
1630 | } else { |
1631 | handle = 1; | |
1632 | err = idr_alloc_u32(&head->handle_idr, fnew, &handle, | |
1633 | INT_MAX, GFP_ATOMIC); | |
1634 | } | |
1635 | if (err) | |
1636 | goto errout_hw; | |
1637 | ||
c049d56e | 1638 | refcount_inc(&fnew->refcnt); |
620da486 | 1639 | fnew->handle = handle; |
05cd271f | 1640 | list_add_tail_rcu(&fnew->list, &fnew->mask->filters); |
3d81e711 | 1641 | spin_unlock(&tp->lock); |
77b9900e JP |
1642 | } |
1643 | ||
620da486 VB |
1644 | *arg = fnew; |
1645 | ||
39b7b6a6 | 1646 | kfree(tb); |
2cddd201 | 1647 | kfree(mask); |
77b9900e JP |
1648 | return 0; |
1649 | ||
c049d56e VB |
1650 | errout_ht: |
1651 | spin_lock(&tp->lock); | |
620da486 | 1652 | errout_hw: |
c049d56e | 1653 | fnew->deleted = true; |
3d81e711 | 1654 | spin_unlock(&tp->lock); |
620da486 | 1655 | if (!tc_skip_hw(fnew->flags)) |
c24e43d8 | 1656 | fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL); |
1f17f774 VB |
1657 | if (in_ht) |
1658 | rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node, | |
1659 | fnew->mask->filter_ht_params); | |
ecb3dea4 | 1660 | errout_mask: |
9994677c | 1661 | fl_mask_put(head, fnew->mask); |
77b9900e | 1662 | errout: |
c049d56e | 1663 | __fl_put(fnew); |
39b7b6a6 AB |
1664 | errout_tb: |
1665 | kfree(tb); | |
2cddd201 IV |
1666 | errout_mask_alloc: |
1667 | kfree(mask); | |
06177558 VB |
1668 | errout_fold: |
1669 | if (fold) | |
1670 | __fl_put(fold); | |
77b9900e JP |
1671 | return err; |
1672 | } | |
1673 | ||
571acf21 | 1674 | static int fl_delete(struct tcf_proto *tp, void *arg, bool *last, |
12db03b6 | 1675 | bool rtnl_held, struct netlink_ext_ack *extack) |
77b9900e | 1676 | { |
e474619a | 1677 | struct cls_fl_head *head = fl_head_dereference(tp); |
8113c095 | 1678 | struct cls_fl_filter *f = arg; |
b2552b8c VB |
1679 | bool last_on_mask; |
1680 | int err = 0; | |
77b9900e | 1681 | |
c24e43d8 | 1682 | err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack); |
05cd271f | 1683 | *last = list_empty(&head->masks); |
06177558 VB |
1684 | __fl_put(f); |
1685 | ||
b2552b8c | 1686 | return err; |
77b9900e JP |
1687 | } |
1688 | ||
12db03b6 VB |
1689 | static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg, |
1690 | bool rtnl_held) | |
77b9900e | 1691 | { |
77b9900e | 1692 | struct cls_fl_filter *f; |
05cd271f | 1693 | |
01683a14 VB |
1694 | arg->count = arg->skip; |
1695 | ||
06177558 | 1696 | while ((f = fl_get_next_filter(tp, &arg->cookie)) != NULL) { |
01683a14 | 1697 | if (arg->fn(tp, f, arg) < 0) { |
06177558 | 1698 | __fl_put(f); |
01683a14 VB |
1699 | arg->stop = 1; |
1700 | break; | |
05cd271f | 1701 | } |
06177558 VB |
1702 | __fl_put(f); |
1703 | arg->cookie++; | |
01683a14 | 1704 | arg->count++; |
77b9900e JP |
1705 | } |
1706 | } | |
1707 | ||
c049d56e VB |
1708 | static struct cls_fl_filter * |
1709 | fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add) | |
1710 | { | |
1711 | struct cls_fl_head *head = fl_head_dereference(tp); | |
1712 | ||
1713 | spin_lock(&tp->lock); | |
1714 | if (list_empty(&head->hw_filters)) { | |
1715 | spin_unlock(&tp->lock); | |
1716 | return NULL; | |
1717 | } | |
1718 | ||
1719 | if (!f) | |
1720 | f = list_entry(&head->hw_filters, struct cls_fl_filter, | |
1721 | hw_list); | |
1722 | list_for_each_entry_continue(f, &head->hw_filters, hw_list) { | |
1723 | if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) { | |
1724 | spin_unlock(&tp->lock); | |
1725 | return f; | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | spin_unlock(&tp->lock); | |
1730 | return NULL; | |
1731 | } | |
1732 | ||
31533cba JH |
1733 | static int fl_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb, |
1734 | void *cb_priv, struct netlink_ext_ack *extack) | |
1735 | { | |
31533cba JH |
1736 | struct tc_cls_flower_offload cls_flower = {}; |
1737 | struct tcf_block *block = tp->chain->block; | |
c049d56e | 1738 | struct cls_fl_filter *f = NULL; |
31533cba JH |
1739 | int err; |
1740 | ||
c049d56e VB |
1741 | /* hw_filters list can only be changed by hw offload functions after |
1742 | * obtaining rtnl lock. Make sure it is not changed while reoffload is | |
1743 | * iterating it. | |
1744 | */ | |
1745 | ASSERT_RTNL(); | |
3a7b6861 | 1746 | |
c049d56e | 1747 | while ((f = fl_get_next_hw_filter(tp, f, add))) { |
95e27a4d JH |
1748 | cls_flower.rule = |
1749 | flow_rule_alloc(tcf_exts_num_actions(&f->exts)); | |
1750 | if (!cls_flower.rule) { | |
1751 | __fl_put(f); | |
1752 | return -ENOMEM; | |
1753 | } | |
31533cba | 1754 | |
95e27a4d | 1755 | tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, |
d6787147 | 1756 | extack); |
95e27a4d JH |
1757 | cls_flower.command = add ? |
1758 | TC_CLSFLOWER_REPLACE : TC_CLSFLOWER_DESTROY; | |
1759 | cls_flower.cookie = (unsigned long)f; | |
1760 | cls_flower.rule->match.dissector = &f->mask->dissector; | |
1761 | cls_flower.rule->match.mask = &f->mask->key; | |
1762 | cls_flower.rule->match.key = &f->mkey; | |
1763 | ||
1764 | err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts); | |
1765 | if (err) { | |
8f256622 | 1766 | kfree(cls_flower.rule); |
95e27a4d JH |
1767 | if (tc_skip_sw(f->flags)) { |
1768 | NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action"); | |
1769 | __fl_put(f); | |
1770 | return err; | |
31533cba | 1771 | } |
95e27a4d JH |
1772 | goto next_flow; |
1773 | } | |
31533cba | 1774 | |
95e27a4d JH |
1775 | cls_flower.classid = f->res.classid; |
1776 | ||
1777 | err = cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv); | |
1778 | kfree(cls_flower.rule); | |
1779 | ||
1780 | if (err) { | |
1781 | if (add && tc_skip_sw(f->flags)) { | |
1782 | __fl_put(f); | |
1783 | return err; | |
1784 | } | |
1785 | goto next_flow; | |
31533cba | 1786 | } |
95e27a4d JH |
1787 | |
1788 | spin_lock(&tp->lock); | |
1789 | tc_cls_offload_cnt_update(block, &f->in_hw_count, &f->flags, | |
1790 | add); | |
1791 | spin_unlock(&tp->lock); | |
1792 | next_flow: | |
95e27a4d | 1793 | __fl_put(f); |
31533cba JH |
1794 | } |
1795 | ||
1796 | return 0; | |
1797 | } | |
1798 | ||
8f256622 PNA |
1799 | static int fl_hw_create_tmplt(struct tcf_chain *chain, |
1800 | struct fl_flow_tmplt *tmplt) | |
34738452 JP |
1801 | { |
1802 | struct tc_cls_flower_offload cls_flower = {}; | |
1803 | struct tcf_block *block = chain->block; | |
34738452 | 1804 | |
e3ab786b | 1805 | cls_flower.rule = flow_rule_alloc(0); |
8f256622 PNA |
1806 | if (!cls_flower.rule) |
1807 | return -ENOMEM; | |
1808 | ||
34738452 JP |
1809 | cls_flower.common.chain_index = chain->index; |
1810 | cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE; | |
1811 | cls_flower.cookie = (unsigned long) tmplt; | |
8f256622 PNA |
1812 | cls_flower.rule->match.dissector = &tmplt->dissector; |
1813 | cls_flower.rule->match.mask = &tmplt->mask; | |
1814 | cls_flower.rule->match.key = &tmplt->dummy_key; | |
34738452 JP |
1815 | |
1816 | /* We don't care if driver (any of them) fails to handle this | |
1817 | * call. It serves just as a hint for it. | |
1818 | */ | |
aeb3fecd | 1819 | tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false); |
8f256622 PNA |
1820 | kfree(cls_flower.rule); |
1821 | ||
1822 | return 0; | |
34738452 JP |
1823 | } |
1824 | ||
1825 | static void fl_hw_destroy_tmplt(struct tcf_chain *chain, | |
1826 | struct fl_flow_tmplt *tmplt) | |
1827 | { | |
1828 | struct tc_cls_flower_offload cls_flower = {}; | |
1829 | struct tcf_block *block = chain->block; | |
1830 | ||
1831 | cls_flower.common.chain_index = chain->index; | |
1832 | cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY; | |
1833 | cls_flower.cookie = (unsigned long) tmplt; | |
1834 | ||
aeb3fecd | 1835 | tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false); |
34738452 JP |
1836 | } |
1837 | ||
b95ec7eb JP |
1838 | static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain, |
1839 | struct nlattr **tca, | |
1840 | struct netlink_ext_ack *extack) | |
1841 | { | |
1842 | struct fl_flow_tmplt *tmplt; | |
1843 | struct nlattr **tb; | |
1844 | int err; | |
1845 | ||
1846 | if (!tca[TCA_OPTIONS]) | |
1847 | return ERR_PTR(-EINVAL); | |
1848 | ||
1849 | tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL); | |
1850 | if (!tb) | |
1851 | return ERR_PTR(-ENOBUFS); | |
8cb08174 JB |
1852 | err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX, |
1853 | tca[TCA_OPTIONS], fl_policy, NULL); | |
b95ec7eb JP |
1854 | if (err) |
1855 | goto errout_tb; | |
1856 | ||
1857 | tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL); | |
1cbc36a5 DC |
1858 | if (!tmplt) { |
1859 | err = -ENOMEM; | |
b95ec7eb | 1860 | goto errout_tb; |
1cbc36a5 | 1861 | } |
b95ec7eb JP |
1862 | tmplt->chain = chain; |
1863 | err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack); | |
1864 | if (err) | |
1865 | goto errout_tmplt; | |
b95ec7eb JP |
1866 | |
1867 | fl_init_dissector(&tmplt->dissector, &tmplt->mask); | |
1868 | ||
8f256622 PNA |
1869 | err = fl_hw_create_tmplt(chain, tmplt); |
1870 | if (err) | |
1871 | goto errout_tmplt; | |
34738452 | 1872 | |
8f256622 | 1873 | kfree(tb); |
b95ec7eb JP |
1874 | return tmplt; |
1875 | ||
1876 | errout_tmplt: | |
1877 | kfree(tmplt); | |
1878 | errout_tb: | |
1879 | kfree(tb); | |
1880 | return ERR_PTR(err); | |
1881 | } | |
1882 | ||
ec3ed293 VB |
1883 | static void fl_tmplt_destroy(void *tmplt_priv) |
1884 | { | |
1885 | struct fl_flow_tmplt *tmplt = tmplt_priv; | |
1886 | ||
95278dda CW |
1887 | fl_hw_destroy_tmplt(tmplt->chain, tmplt); |
1888 | kfree(tmplt); | |
ec3ed293 VB |
1889 | } |
1890 | ||
77b9900e JP |
1891 | static int fl_dump_key_val(struct sk_buff *skb, |
1892 | void *val, int val_type, | |
1893 | void *mask, int mask_type, int len) | |
1894 | { | |
1895 | int err; | |
1896 | ||
1897 | if (!memchr_inv(mask, 0, len)) | |
1898 | return 0; | |
1899 | err = nla_put(skb, val_type, len, val); | |
1900 | if (err) | |
1901 | return err; | |
1902 | if (mask_type != TCA_FLOWER_UNSPEC) { | |
1903 | err = nla_put(skb, mask_type, len, mask); | |
1904 | if (err) | |
1905 | return err; | |
1906 | } | |
1907 | return 0; | |
1908 | } | |
1909 | ||
5c72299f AN |
1910 | static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key, |
1911 | struct fl_flow_key *mask) | |
1912 | { | |
1913 | if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN, | |
1914 | &mask->tp_min.dst, TCA_FLOWER_UNSPEC, | |
1915 | sizeof(key->tp_min.dst)) || | |
1916 | fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX, | |
1917 | &mask->tp_max.dst, TCA_FLOWER_UNSPEC, | |
1918 | sizeof(key->tp_max.dst)) || | |
1919 | fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN, | |
1920 | &mask->tp_min.src, TCA_FLOWER_UNSPEC, | |
1921 | sizeof(key->tp_min.src)) || | |
1922 | fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX, | |
1923 | &mask->tp_max.src, TCA_FLOWER_UNSPEC, | |
1924 | sizeof(key->tp_max.src))) | |
1925 | return -1; | |
1926 | ||
1927 | return 0; | |
1928 | } | |
1929 | ||
a577d8f7 BL |
1930 | static int fl_dump_key_mpls(struct sk_buff *skb, |
1931 | struct flow_dissector_key_mpls *mpls_key, | |
1932 | struct flow_dissector_key_mpls *mpls_mask) | |
1933 | { | |
1934 | int err; | |
1935 | ||
1936 | if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask))) | |
1937 | return 0; | |
1938 | if (mpls_mask->mpls_ttl) { | |
1939 | err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL, | |
1940 | mpls_key->mpls_ttl); | |
1941 | if (err) | |
1942 | return err; | |
1943 | } | |
1944 | if (mpls_mask->mpls_tc) { | |
1945 | err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC, | |
1946 | mpls_key->mpls_tc); | |
1947 | if (err) | |
1948 | return err; | |
1949 | } | |
1950 | if (mpls_mask->mpls_label) { | |
1951 | err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL, | |
1952 | mpls_key->mpls_label); | |
1953 | if (err) | |
1954 | return err; | |
1955 | } | |
1956 | if (mpls_mask->mpls_bos) { | |
1957 | err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS, | |
1958 | mpls_key->mpls_bos); | |
1959 | if (err) | |
1960 | return err; | |
1961 | } | |
1962 | return 0; | |
1963 | } | |
1964 | ||
0e2c17b6 | 1965 | static int fl_dump_key_ip(struct sk_buff *skb, bool encap, |
4d80cc0a OG |
1966 | struct flow_dissector_key_ip *key, |
1967 | struct flow_dissector_key_ip *mask) | |
1968 | { | |
0e2c17b6 OG |
1969 | int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS; |
1970 | int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL; | |
1971 | int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK; | |
1972 | int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK; | |
1973 | ||
1974 | if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) || | |
1975 | fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl))) | |
4d80cc0a OG |
1976 | return -1; |
1977 | ||
1978 | return 0; | |
1979 | } | |
1980 | ||
9399ae9a | 1981 | static int fl_dump_key_vlan(struct sk_buff *skb, |
d64efd09 | 1982 | int vlan_id_key, int vlan_prio_key, |
9399ae9a HHZ |
1983 | struct flow_dissector_key_vlan *vlan_key, |
1984 | struct flow_dissector_key_vlan *vlan_mask) | |
1985 | { | |
1986 | int err; | |
1987 | ||
1988 | if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask))) | |
1989 | return 0; | |
1990 | if (vlan_mask->vlan_id) { | |
d64efd09 | 1991 | err = nla_put_u16(skb, vlan_id_key, |
9399ae9a HHZ |
1992 | vlan_key->vlan_id); |
1993 | if (err) | |
1994 | return err; | |
1995 | } | |
1996 | if (vlan_mask->vlan_priority) { | |
d64efd09 | 1997 | err = nla_put_u8(skb, vlan_prio_key, |
9399ae9a HHZ |
1998 | vlan_key->vlan_priority); |
1999 | if (err) | |
2000 | return err; | |
2001 | } | |
2002 | return 0; | |
2003 | } | |
2004 | ||
faa3ffce OG |
2005 | static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask, |
2006 | u32 *flower_key, u32 *flower_mask, | |
2007 | u32 flower_flag_bit, u32 dissector_flag_bit) | |
2008 | { | |
2009 | if (dissector_mask & dissector_flag_bit) { | |
2010 | *flower_mask |= flower_flag_bit; | |
2011 | if (dissector_key & dissector_flag_bit) | |
2012 | *flower_key |= flower_flag_bit; | |
2013 | } | |
2014 | } | |
2015 | ||
2016 | static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask) | |
2017 | { | |
2018 | u32 key, mask; | |
2019 | __be32 _key, _mask; | |
2020 | int err; | |
2021 | ||
2022 | if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask))) | |
2023 | return 0; | |
2024 | ||
2025 | key = 0; | |
2026 | mask = 0; | |
2027 | ||
2028 | fl_get_key_flag(flags_key, flags_mask, &key, &mask, | |
2029 | TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT); | |
459d153d PJV |
2030 | fl_get_key_flag(flags_key, flags_mask, &key, &mask, |
2031 | TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST, | |
2032 | FLOW_DIS_FIRST_FRAG); | |
faa3ffce OG |
2033 | |
2034 | _key = cpu_to_be32(key); | |
2035 | _mask = cpu_to_be32(mask); | |
2036 | ||
2037 | err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key); | |
2038 | if (err) | |
2039 | return err; | |
2040 | ||
2041 | return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask); | |
2042 | } | |
2043 | ||
0a6e7778 PJV |
2044 | static int fl_dump_key_geneve_opt(struct sk_buff *skb, |
2045 | struct flow_dissector_key_enc_opts *enc_opts) | |
2046 | { | |
2047 | struct geneve_opt *opt; | |
2048 | struct nlattr *nest; | |
2049 | int opt_off = 0; | |
2050 | ||
ae0be8de | 2051 | nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE); |
0a6e7778 PJV |
2052 | if (!nest) |
2053 | goto nla_put_failure; | |
2054 | ||
2055 | while (enc_opts->len > opt_off) { | |
2056 | opt = (struct geneve_opt *)&enc_opts->data[opt_off]; | |
2057 | ||
2058 | if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS, | |
2059 | opt->opt_class)) | |
2060 | goto nla_put_failure; | |
2061 | if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE, | |
2062 | opt->type)) | |
2063 | goto nla_put_failure; | |
2064 | if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA, | |
2065 | opt->length * 4, opt->opt_data)) | |
2066 | goto nla_put_failure; | |
2067 | ||
2068 | opt_off += sizeof(struct geneve_opt) + opt->length * 4; | |
2069 | } | |
2070 | nla_nest_end(skb, nest); | |
2071 | return 0; | |
2072 | ||
2073 | nla_put_failure: | |
2074 | nla_nest_cancel(skb, nest); | |
2075 | return -EMSGSIZE; | |
2076 | } | |
2077 | ||
2078 | static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type, | |
2079 | struct flow_dissector_key_enc_opts *enc_opts) | |
2080 | { | |
2081 | struct nlattr *nest; | |
2082 | int err; | |
2083 | ||
2084 | if (!enc_opts->len) | |
2085 | return 0; | |
2086 | ||
ae0be8de | 2087 | nest = nla_nest_start_noflag(skb, enc_opt_type); |
0a6e7778 PJV |
2088 | if (!nest) |
2089 | goto nla_put_failure; | |
2090 | ||
2091 | switch (enc_opts->dst_opt_type) { | |
2092 | case TUNNEL_GENEVE_OPT: | |
2093 | err = fl_dump_key_geneve_opt(skb, enc_opts); | |
2094 | if (err) | |
2095 | goto nla_put_failure; | |
2096 | break; | |
2097 | default: | |
2098 | goto nla_put_failure; | |
2099 | } | |
2100 | nla_nest_end(skb, nest); | |
2101 | return 0; | |
2102 | ||
2103 | nla_put_failure: | |
2104 | nla_nest_cancel(skb, nest); | |
2105 | return -EMSGSIZE; | |
2106 | } | |
2107 | ||
2108 | static int fl_dump_key_enc_opt(struct sk_buff *skb, | |
2109 | struct flow_dissector_key_enc_opts *key_opts, | |
2110 | struct flow_dissector_key_enc_opts *msk_opts) | |
2111 | { | |
2112 | int err; | |
2113 | ||
2114 | err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts); | |
2115 | if (err) | |
2116 | return err; | |
2117 | ||
2118 | return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts); | |
2119 | } | |
2120 | ||
f5749081 JP |
2121 | static int fl_dump_key(struct sk_buff *skb, struct net *net, |
2122 | struct fl_flow_key *key, struct fl_flow_key *mask) | |
77b9900e | 2123 | { |
77b9900e JP |
2124 | if (mask->indev_ifindex) { |
2125 | struct net_device *dev; | |
2126 | ||
2127 | dev = __dev_get_by_index(net, key->indev_ifindex); | |
2128 | if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name)) | |
2129 | goto nla_put_failure; | |
2130 | } | |
2131 | ||
2132 | if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, | |
2133 | mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, | |
2134 | sizeof(key->eth.dst)) || | |
2135 | fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, | |
2136 | mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, | |
2137 | sizeof(key->eth.src)) || | |
2138 | fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE, | |
2139 | &mask->basic.n_proto, TCA_FLOWER_UNSPEC, | |
2140 | sizeof(key->basic.n_proto))) | |
2141 | goto nla_put_failure; | |
9399ae9a | 2142 | |
a577d8f7 BL |
2143 | if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls)) |
2144 | goto nla_put_failure; | |
2145 | ||
d64efd09 JL |
2146 | if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID, |
2147 | TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan)) | |
9399ae9a HHZ |
2148 | goto nla_put_failure; |
2149 | ||
d64efd09 JL |
2150 | if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID, |
2151 | TCA_FLOWER_KEY_CVLAN_PRIO, | |
2152 | &key->cvlan, &mask->cvlan) || | |
2153 | (mask->cvlan.vlan_tpid && | |
158abbf1 JL |
2154 | nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE, |
2155 | key->cvlan.vlan_tpid))) | |
d3069512 JL |
2156 | goto nla_put_failure; |
2157 | ||
5e9a0fe4 JL |
2158 | if (mask->basic.n_proto) { |
2159 | if (mask->cvlan.vlan_tpid) { | |
2160 | if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE, | |
2161 | key->basic.n_proto)) | |
2162 | goto nla_put_failure; | |
2163 | } else if (mask->vlan.vlan_tpid) { | |
2164 | if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE, | |
2165 | key->basic.n_proto)) | |
2166 | goto nla_put_failure; | |
2167 | } | |
d64efd09 JL |
2168 | } |
2169 | ||
77b9900e JP |
2170 | if ((key->basic.n_proto == htons(ETH_P_IP) || |
2171 | key->basic.n_proto == htons(ETH_P_IPV6)) && | |
4d80cc0a | 2172 | (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, |
77b9900e | 2173 | &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, |
4d80cc0a | 2174 | sizeof(key->basic.ip_proto)) || |
0e2c17b6 | 2175 | fl_dump_key_ip(skb, false, &key->ip, &mask->ip))) |
77b9900e JP |
2176 | goto nla_put_failure; |
2177 | ||
c3f83241 | 2178 | if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && |
77b9900e JP |
2179 | (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, |
2180 | &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, | |
2181 | sizeof(key->ipv4.src)) || | |
2182 | fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, | |
2183 | &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, | |
2184 | sizeof(key->ipv4.dst)))) | |
2185 | goto nla_put_failure; | |
c3f83241 | 2186 | else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && |
77b9900e JP |
2187 | (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, |
2188 | &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, | |
2189 | sizeof(key->ipv6.src)) || | |
2190 | fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, | |
2191 | &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, | |
2192 | sizeof(key->ipv6.dst)))) | |
2193 | goto nla_put_failure; | |
2194 | ||
2195 | if (key->basic.ip_proto == IPPROTO_TCP && | |
2196 | (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, | |
aa72d708 | 2197 | &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK, |
77b9900e JP |
2198 | sizeof(key->tp.src)) || |
2199 | fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, | |
aa72d708 | 2200 | &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK, |
fdfc7dd6 JP |
2201 | sizeof(key->tp.dst)) || |
2202 | fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS, | |
2203 | &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK, | |
2204 | sizeof(key->tcp.flags)))) | |
77b9900e JP |
2205 | goto nla_put_failure; |
2206 | else if (key->basic.ip_proto == IPPROTO_UDP && | |
2207 | (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, | |
aa72d708 | 2208 | &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK, |
77b9900e JP |
2209 | sizeof(key->tp.src)) || |
2210 | fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, | |
aa72d708 | 2211 | &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK, |
5976c5f4 SH |
2212 | sizeof(key->tp.dst)))) |
2213 | goto nla_put_failure; | |
2214 | else if (key->basic.ip_proto == IPPROTO_SCTP && | |
2215 | (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC, | |
2216 | &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK, | |
2217 | sizeof(key->tp.src)) || | |
2218 | fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST, | |
2219 | &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK, | |
77b9900e JP |
2220 | sizeof(key->tp.dst)))) |
2221 | goto nla_put_failure; | |
7b684884 SH |
2222 | else if (key->basic.n_proto == htons(ETH_P_IP) && |
2223 | key->basic.ip_proto == IPPROTO_ICMP && | |
2224 | (fl_dump_key_val(skb, &key->icmp.type, | |
2225 | TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type, | |
2226 | TCA_FLOWER_KEY_ICMPV4_TYPE_MASK, | |
2227 | sizeof(key->icmp.type)) || | |
2228 | fl_dump_key_val(skb, &key->icmp.code, | |
2229 | TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code, | |
2230 | TCA_FLOWER_KEY_ICMPV4_CODE_MASK, | |
2231 | sizeof(key->icmp.code)))) | |
2232 | goto nla_put_failure; | |
2233 | else if (key->basic.n_proto == htons(ETH_P_IPV6) && | |
2234 | key->basic.ip_proto == IPPROTO_ICMPV6 && | |
2235 | (fl_dump_key_val(skb, &key->icmp.type, | |
2236 | TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type, | |
2237 | TCA_FLOWER_KEY_ICMPV6_TYPE_MASK, | |
2238 | sizeof(key->icmp.type)) || | |
2239 | fl_dump_key_val(skb, &key->icmp.code, | |
2240 | TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code, | |
2241 | TCA_FLOWER_KEY_ICMPV6_CODE_MASK, | |
2242 | sizeof(key->icmp.code)))) | |
2243 | goto nla_put_failure; | |
99d31326 SH |
2244 | else if ((key->basic.n_proto == htons(ETH_P_ARP) || |
2245 | key->basic.n_proto == htons(ETH_P_RARP)) && | |
2246 | (fl_dump_key_val(skb, &key->arp.sip, | |
2247 | TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip, | |
2248 | TCA_FLOWER_KEY_ARP_SIP_MASK, | |
2249 | sizeof(key->arp.sip)) || | |
2250 | fl_dump_key_val(skb, &key->arp.tip, | |
2251 | TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip, | |
2252 | TCA_FLOWER_KEY_ARP_TIP_MASK, | |
2253 | sizeof(key->arp.tip)) || | |
2254 | fl_dump_key_val(skb, &key->arp.op, | |
2255 | TCA_FLOWER_KEY_ARP_OP, &mask->arp.op, | |
2256 | TCA_FLOWER_KEY_ARP_OP_MASK, | |
2257 | sizeof(key->arp.op)) || | |
2258 | fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA, | |
2259 | mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK, | |
2260 | sizeof(key->arp.sha)) || | |
2261 | fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA, | |
2262 | mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK, | |
2263 | sizeof(key->arp.tha)))) | |
2264 | goto nla_put_failure; | |
77b9900e | 2265 | |
5c72299f AN |
2266 | if ((key->basic.ip_proto == IPPROTO_TCP || |
2267 | key->basic.ip_proto == IPPROTO_UDP || | |
2268 | key->basic.ip_proto == IPPROTO_SCTP) && | |
2269 | fl_dump_key_port_range(skb, key, mask)) | |
2270 | goto nla_put_failure; | |
2271 | ||
bc3103f1 AV |
2272 | if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && |
2273 | (fl_dump_key_val(skb, &key->enc_ipv4.src, | |
2274 | TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src, | |
2275 | TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, | |
2276 | sizeof(key->enc_ipv4.src)) || | |
2277 | fl_dump_key_val(skb, &key->enc_ipv4.dst, | |
2278 | TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst, | |
2279 | TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, | |
2280 | sizeof(key->enc_ipv4.dst)))) | |
2281 | goto nla_put_failure; | |
2282 | else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && | |
2283 | (fl_dump_key_val(skb, &key->enc_ipv6.src, | |
2284 | TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src, | |
2285 | TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, | |
2286 | sizeof(key->enc_ipv6.src)) || | |
2287 | fl_dump_key_val(skb, &key->enc_ipv6.dst, | |
2288 | TCA_FLOWER_KEY_ENC_IPV6_DST, | |
2289 | &mask->enc_ipv6.dst, | |
2290 | TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, | |
2291 | sizeof(key->enc_ipv6.dst)))) | |
2292 | goto nla_put_failure; | |
2293 | ||
2294 | if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID, | |
eb523f42 | 2295 | &mask->enc_key_id, TCA_FLOWER_UNSPEC, |
f4d997fd HHZ |
2296 | sizeof(key->enc_key_id)) || |
2297 | fl_dump_key_val(skb, &key->enc_tp.src, | |
2298 | TCA_FLOWER_KEY_ENC_UDP_SRC_PORT, | |
2299 | &mask->enc_tp.src, | |
2300 | TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK, | |
2301 | sizeof(key->enc_tp.src)) || | |
2302 | fl_dump_key_val(skb, &key->enc_tp.dst, | |
2303 | TCA_FLOWER_KEY_ENC_UDP_DST_PORT, | |
2304 | &mask->enc_tp.dst, | |
2305 | TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK, | |
0e2c17b6 | 2306 | sizeof(key->enc_tp.dst)) || |
0a6e7778 PJV |
2307 | fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) || |
2308 | fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts)) | |
bc3103f1 AV |
2309 | goto nla_put_failure; |
2310 | ||
faa3ffce OG |
2311 | if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags)) |
2312 | goto nla_put_failure; | |
2313 | ||
f5749081 JP |
2314 | return 0; |
2315 | ||
2316 | nla_put_failure: | |
2317 | return -EMSGSIZE; | |
2318 | } | |
2319 | ||
2320 | static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh, | |
12db03b6 | 2321 | struct sk_buff *skb, struct tcmsg *t, bool rtnl_held) |
f5749081 JP |
2322 | { |
2323 | struct cls_fl_filter *f = fh; | |
2324 | struct nlattr *nest; | |
2325 | struct fl_flow_key *key, *mask; | |
3d81e711 | 2326 | bool skip_hw; |
f5749081 JP |
2327 | |
2328 | if (!f) | |
2329 | return skb->len; | |
2330 | ||
2331 | t->tcm_handle = f->handle; | |
2332 | ||
ae0be8de | 2333 | nest = nla_nest_start_noflag(skb, TCA_OPTIONS); |
f5749081 JP |
2334 | if (!nest) |
2335 | goto nla_put_failure; | |
2336 | ||
3d81e711 VB |
2337 | spin_lock(&tp->lock); |
2338 | ||
f5749081 JP |
2339 | if (f->res.classid && |
2340 | nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid)) | |
3d81e711 | 2341 | goto nla_put_failure_locked; |
f5749081 JP |
2342 | |
2343 | key = &f->key; | |
2344 | mask = &f->mask->key; | |
3d81e711 | 2345 | skip_hw = tc_skip_hw(f->flags); |
f5749081 JP |
2346 | |
2347 | if (fl_dump_key(skb, net, key, mask)) | |
3d81e711 | 2348 | goto nla_put_failure_locked; |
f5749081 | 2349 | |
749e6720 | 2350 | if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags)) |
3d81e711 VB |
2351 | goto nla_put_failure_locked; |
2352 | ||
2353 | spin_unlock(&tp->lock); | |
2354 | ||
2355 | if (!skip_hw) | |
c24e43d8 | 2356 | fl_hw_update_stats(tp, f, rtnl_held); |
e69985c6 | 2357 | |
86c55361 VB |
2358 | if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count)) |
2359 | goto nla_put_failure; | |
2360 | ||
77b9900e JP |
2361 | if (tcf_exts_dump(skb, &f->exts)) |
2362 | goto nla_put_failure; | |
2363 | ||
2364 | nla_nest_end(skb, nest); | |
2365 | ||
2366 | if (tcf_exts_dump_stats(skb, &f->exts) < 0) | |
2367 | goto nla_put_failure; | |
2368 | ||
2369 | return skb->len; | |
2370 | ||
3d81e711 VB |
2371 | nla_put_failure_locked: |
2372 | spin_unlock(&tp->lock); | |
77b9900e JP |
2373 | nla_put_failure: |
2374 | nla_nest_cancel(skb, nest); | |
2375 | return -1; | |
2376 | } | |
2377 | ||
b95ec7eb JP |
2378 | static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv) |
2379 | { | |
2380 | struct fl_flow_tmplt *tmplt = tmplt_priv; | |
2381 | struct fl_flow_key *key, *mask; | |
2382 | struct nlattr *nest; | |
2383 | ||
ae0be8de | 2384 | nest = nla_nest_start_noflag(skb, TCA_OPTIONS); |
b95ec7eb JP |
2385 | if (!nest) |
2386 | goto nla_put_failure; | |
2387 | ||
2388 | key = &tmplt->dummy_key; | |
2389 | mask = &tmplt->mask; | |
2390 | ||
2391 | if (fl_dump_key(skb, net, key, mask)) | |
2392 | goto nla_put_failure; | |
2393 | ||
2394 | nla_nest_end(skb, nest); | |
2395 | ||
2396 | return skb->len; | |
2397 | ||
2398 | nla_put_failure: | |
2399 | nla_nest_cancel(skb, nest); | |
2400 | return -EMSGSIZE; | |
2401 | } | |
2402 | ||
07d79fc7 CW |
2403 | static void fl_bind_class(void *fh, u32 classid, unsigned long cl) |
2404 | { | |
2405 | struct cls_fl_filter *f = fh; | |
2406 | ||
2407 | if (f && f->res.classid == classid) | |
2408 | f->res.class = cl; | |
2409 | } | |
2410 | ||
77b9900e JP |
2411 | static struct tcf_proto_ops cls_fl_ops __read_mostly = { |
2412 | .kind = "flower", | |
2413 | .classify = fl_classify, | |
2414 | .init = fl_init, | |
2415 | .destroy = fl_destroy, | |
2416 | .get = fl_get, | |
06177558 | 2417 | .put = fl_put, |
77b9900e JP |
2418 | .change = fl_change, |
2419 | .delete = fl_delete, | |
2420 | .walk = fl_walk, | |
31533cba | 2421 | .reoffload = fl_reoffload, |
77b9900e | 2422 | .dump = fl_dump, |
07d79fc7 | 2423 | .bind_class = fl_bind_class, |
b95ec7eb JP |
2424 | .tmplt_create = fl_tmplt_create, |
2425 | .tmplt_destroy = fl_tmplt_destroy, | |
2426 | .tmplt_dump = fl_tmplt_dump, | |
77b9900e | 2427 | .owner = THIS_MODULE, |
92149190 | 2428 | .flags = TCF_PROTO_OPS_DOIT_UNLOCKED, |
77b9900e JP |
2429 | }; |
2430 | ||
2431 | static int __init cls_fl_init(void) | |
2432 | { | |
2433 | return register_tcf_proto_ops(&cls_fl_ops); | |
2434 | } | |
2435 | ||
2436 | static void __exit cls_fl_exit(void) | |
2437 | { | |
2438 | unregister_tcf_proto_ops(&cls_fl_ops); | |
2439 | } | |
2440 | ||
2441 | module_init(cls_fl_init); | |
2442 | module_exit(cls_fl_exit); | |
2443 | ||
2444 | MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); | |
2445 | MODULE_DESCRIPTION("Flower classifier"); | |
2446 | MODULE_LICENSE("GPL v2"); |