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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[mirror_ubuntu-artful-kernel.git] / net / sched / cls_flower.c
1 /*
2 * net/sched/cls_flower.c Flower classifier
3 *
4 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/module.h>
15 #include <linux/rhashtable.h>
16 #include <linux/workqueue.h>
17
18 #include <linux/if_ether.h>
19 #include <linux/in6.h>
20 #include <linux/ip.h>
21
22 #include <net/sch_generic.h>
23 #include <net/pkt_cls.h>
24 #include <net/ip.h>
25 #include <net/flow_dissector.h>
26
27 #include <net/dst.h>
28 #include <net/dst_metadata.h>
29
30 struct fl_flow_key {
31 int indev_ifindex;
32 struct flow_dissector_key_control control;
33 struct flow_dissector_key_control enc_control;
34 struct flow_dissector_key_basic basic;
35 struct flow_dissector_key_eth_addrs eth;
36 struct flow_dissector_key_vlan vlan;
37 union {
38 struct flow_dissector_key_ipv4_addrs ipv4;
39 struct flow_dissector_key_ipv6_addrs ipv6;
40 };
41 struct flow_dissector_key_ports tp;
42 struct flow_dissector_key_icmp icmp;
43 struct flow_dissector_key_arp arp;
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 };
49 struct flow_dissector_key_ports enc_tp;
50 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
51
52 struct fl_flow_mask_range {
53 unsigned short int start;
54 unsigned short int end;
55 };
56
57 struct fl_flow_mask {
58 struct fl_flow_key key;
59 struct fl_flow_mask_range range;
60 struct rcu_head rcu;
61 };
62
63 struct cls_fl_head {
64 struct rhashtable ht;
65 struct fl_flow_mask mask;
66 struct flow_dissector dissector;
67 u32 hgen;
68 bool mask_assigned;
69 struct list_head filters;
70 struct rhashtable_params ht_params;
71 union {
72 struct work_struct work;
73 struct rcu_head rcu;
74 };
75 };
76
77 struct cls_fl_filter {
78 struct rhash_head ht_node;
79 struct fl_flow_key mkey;
80 struct tcf_exts exts;
81 struct tcf_result res;
82 struct fl_flow_key key;
83 struct list_head list;
84 u32 handle;
85 u32 flags;
86 struct rcu_head rcu;
87 struct tc_to_netdev tc;
88 struct net_device *hw_dev;
89 };
90
91 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
92 {
93 return mask->range.end - mask->range.start;
94 }
95
96 static void fl_mask_update_range(struct fl_flow_mask *mask)
97 {
98 const u8 *bytes = (const u8 *) &mask->key;
99 size_t size = sizeof(mask->key);
100 size_t i, first = 0, last = size - 1;
101
102 for (i = 0; i < sizeof(mask->key); i++) {
103 if (bytes[i]) {
104 if (!first && i)
105 first = i;
106 last = i;
107 }
108 }
109 mask->range.start = rounddown(first, sizeof(long));
110 mask->range.end = roundup(last + 1, sizeof(long));
111 }
112
113 static void *fl_key_get_start(struct fl_flow_key *key,
114 const struct fl_flow_mask *mask)
115 {
116 return (u8 *) key + mask->range.start;
117 }
118
119 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
120 struct fl_flow_mask *mask)
121 {
122 const long *lkey = fl_key_get_start(key, mask);
123 const long *lmask = fl_key_get_start(&mask->key, mask);
124 long *lmkey = fl_key_get_start(mkey, mask);
125 int i;
126
127 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
128 *lmkey++ = *lkey++ & *lmask++;
129 }
130
131 static void fl_clear_masked_range(struct fl_flow_key *key,
132 struct fl_flow_mask *mask)
133 {
134 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
135 }
136
137 static struct cls_fl_filter *fl_lookup(struct cls_fl_head *head,
138 struct fl_flow_key *mkey)
139 {
140 return rhashtable_lookup_fast(&head->ht,
141 fl_key_get_start(mkey, &head->mask),
142 head->ht_params);
143 }
144
145 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
146 struct tcf_result *res)
147 {
148 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
149 struct cls_fl_filter *f;
150 struct fl_flow_key skb_key;
151 struct fl_flow_key skb_mkey;
152 struct ip_tunnel_info *info;
153
154 if (!atomic_read(&head->ht.nelems))
155 return -1;
156
157 fl_clear_masked_range(&skb_key, &head->mask);
158
159 info = skb_tunnel_info(skb);
160 if (info) {
161 struct ip_tunnel_key *key = &info->key;
162
163 switch (ip_tunnel_info_af(info)) {
164 case AF_INET:
165 skb_key.enc_control.addr_type =
166 FLOW_DISSECTOR_KEY_IPV4_ADDRS;
167 skb_key.enc_ipv4.src = key->u.ipv4.src;
168 skb_key.enc_ipv4.dst = key->u.ipv4.dst;
169 break;
170 case AF_INET6:
171 skb_key.enc_control.addr_type =
172 FLOW_DISSECTOR_KEY_IPV6_ADDRS;
173 skb_key.enc_ipv6.src = key->u.ipv6.src;
174 skb_key.enc_ipv6.dst = key->u.ipv6.dst;
175 break;
176 }
177
178 skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id);
179 skb_key.enc_tp.src = key->tp_src;
180 skb_key.enc_tp.dst = key->tp_dst;
181 }
182
183 skb_key.indev_ifindex = skb->skb_iif;
184 /* skb_flow_dissect() does not set n_proto in case an unknown protocol,
185 * so do it rather here.
186 */
187 skb_key.basic.n_proto = skb->protocol;
188 skb_flow_dissect(skb, &head->dissector, &skb_key, 0);
189
190 fl_set_masked_key(&skb_mkey, &skb_key, &head->mask);
191
192 f = fl_lookup(head, &skb_mkey);
193 if (f && !tc_skip_sw(f->flags)) {
194 *res = f->res;
195 return tcf_exts_exec(skb, &f->exts, res);
196 }
197 return -1;
198 }
199
200 static int fl_init(struct tcf_proto *tp)
201 {
202 struct cls_fl_head *head;
203
204 head = kzalloc(sizeof(*head), GFP_KERNEL);
205 if (!head)
206 return -ENOBUFS;
207
208 INIT_LIST_HEAD_RCU(&head->filters);
209 rcu_assign_pointer(tp->root, head);
210
211 return 0;
212 }
213
214 static void fl_destroy_filter(struct rcu_head *head)
215 {
216 struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu);
217
218 tcf_exts_destroy(&f->exts);
219 kfree(f);
220 }
221
222 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
223 {
224 struct tc_cls_flower_offload offload = {0};
225 struct net_device *dev = f->hw_dev;
226 struct tc_to_netdev *tc = &f->tc;
227
228 if (!tc_can_offload(dev, tp))
229 return;
230
231 offload.command = TC_CLSFLOWER_DESTROY;
232 offload.cookie = (unsigned long)f;
233
234 tc->type = TC_SETUP_CLSFLOWER;
235 tc->cls_flower = &offload;
236
237 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
238 }
239
240 static int fl_hw_replace_filter(struct tcf_proto *tp,
241 struct flow_dissector *dissector,
242 struct fl_flow_key *mask,
243 struct cls_fl_filter *f)
244 {
245 struct net_device *dev = tp->q->dev_queue->dev;
246 struct tc_cls_flower_offload offload = {0};
247 struct tc_to_netdev *tc = &f->tc;
248 int err;
249
250 if (!tc_can_offload(dev, tp)) {
251 if (tcf_exts_get_dev(dev, &f->exts, &f->hw_dev) ||
252 (f->hw_dev && !tc_can_offload(f->hw_dev, tp))) {
253 f->hw_dev = dev;
254 return tc_skip_sw(f->flags) ? -EINVAL : 0;
255 }
256 dev = f->hw_dev;
257 tc->egress_dev = true;
258 } else {
259 f->hw_dev = dev;
260 }
261
262 offload.command = TC_CLSFLOWER_REPLACE;
263 offload.cookie = (unsigned long)f;
264 offload.dissector = dissector;
265 offload.mask = mask;
266 offload.key = &f->mkey;
267 offload.exts = &f->exts;
268
269 tc->type = TC_SETUP_CLSFLOWER;
270 tc->cls_flower = &offload;
271
272 err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
273 tc);
274
275 if (tc_skip_sw(f->flags))
276 return err;
277 return 0;
278 }
279
280 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
281 {
282 struct tc_cls_flower_offload offload = {0};
283 struct net_device *dev = f->hw_dev;
284 struct tc_to_netdev *tc = &f->tc;
285
286 if (!tc_can_offload(dev, tp))
287 return;
288
289 offload.command = TC_CLSFLOWER_STATS;
290 offload.cookie = (unsigned long)f;
291 offload.exts = &f->exts;
292
293 tc->type = TC_SETUP_CLSFLOWER;
294 tc->cls_flower = &offload;
295
296 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
297 }
298
299 static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
300 {
301 list_del_rcu(&f->list);
302 if (!tc_skip_hw(f->flags))
303 fl_hw_destroy_filter(tp, f);
304 tcf_unbind_filter(tp, &f->res);
305 call_rcu(&f->rcu, fl_destroy_filter);
306 }
307
308 static void fl_destroy_sleepable(struct work_struct *work)
309 {
310 struct cls_fl_head *head = container_of(work, struct cls_fl_head,
311 work);
312 if (head->mask_assigned)
313 rhashtable_destroy(&head->ht);
314 kfree(head);
315 module_put(THIS_MODULE);
316 }
317
318 static void fl_destroy_rcu(struct rcu_head *rcu)
319 {
320 struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu);
321
322 INIT_WORK(&head->work, fl_destroy_sleepable);
323 schedule_work(&head->work);
324 }
325
326 static bool fl_destroy(struct tcf_proto *tp, bool force)
327 {
328 struct cls_fl_head *head = rtnl_dereference(tp->root);
329 struct cls_fl_filter *f, *next;
330
331 if (!force && !list_empty(&head->filters))
332 return false;
333
334 list_for_each_entry_safe(f, next, &head->filters, list)
335 __fl_delete(tp, f);
336
337 __module_get(THIS_MODULE);
338 call_rcu(&head->rcu, fl_destroy_rcu);
339
340 return true;
341 }
342
343 static unsigned long fl_get(struct tcf_proto *tp, u32 handle)
344 {
345 struct cls_fl_head *head = rtnl_dereference(tp->root);
346 struct cls_fl_filter *f;
347
348 list_for_each_entry(f, &head->filters, list)
349 if (f->handle == handle)
350 return (unsigned long) f;
351 return 0;
352 }
353
354 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
355 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
356 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
357 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
358 .len = IFNAMSIZ },
359 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
360 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
361 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
362 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
363 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
364 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
365 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
366 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
367 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
368 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
369 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
370 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
371 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
372 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
373 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
374 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
375 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
376 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
377 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
378 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
379 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
380 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
381 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
382 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
383 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
384 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
385 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
386 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
387 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
388 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
389 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
390 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
391 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
392 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
393 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
394 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
395 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
396 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
397 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
398 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
399 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
400 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
401 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
402 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
403 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
404 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
405 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
406 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
407 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
408 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
409 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
410 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
411 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
412 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
413 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
414 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
415 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
416 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
417 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
418 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
419 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
420 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
421 };
422
423 static void fl_set_key_val(struct nlattr **tb,
424 void *val, int val_type,
425 void *mask, int mask_type, int len)
426 {
427 if (!tb[val_type])
428 return;
429 memcpy(val, nla_data(tb[val_type]), len);
430 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
431 memset(mask, 0xff, len);
432 else
433 memcpy(mask, nla_data(tb[mask_type]), len);
434 }
435
436 static void fl_set_key_vlan(struct nlattr **tb,
437 struct flow_dissector_key_vlan *key_val,
438 struct flow_dissector_key_vlan *key_mask)
439 {
440 #define VLAN_PRIORITY_MASK 0x7
441
442 if (tb[TCA_FLOWER_KEY_VLAN_ID]) {
443 key_val->vlan_id =
444 nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK;
445 key_mask->vlan_id = VLAN_VID_MASK;
446 }
447 if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) {
448 key_val->vlan_priority =
449 nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) &
450 VLAN_PRIORITY_MASK;
451 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
452 }
453 }
454
455 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
456 u32 *dissector_key, u32 *dissector_mask,
457 u32 flower_flag_bit, u32 dissector_flag_bit)
458 {
459 if (flower_mask & flower_flag_bit) {
460 *dissector_mask |= dissector_flag_bit;
461 if (flower_key & flower_flag_bit)
462 *dissector_key |= dissector_flag_bit;
463 }
464 }
465
466 static int fl_set_key_flags(struct nlattr **tb,
467 u32 *flags_key, u32 *flags_mask)
468 {
469 u32 key, mask;
470
471 /* mask is mandatory for flags */
472 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
473 return -EINVAL;
474
475 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
476 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
477
478 *flags_key = 0;
479 *flags_mask = 0;
480
481 fl_set_key_flag(key, mask, flags_key, flags_mask,
482 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
483
484 return 0;
485 }
486
487 static int fl_set_key(struct net *net, struct nlattr **tb,
488 struct fl_flow_key *key, struct fl_flow_key *mask)
489 {
490 __be16 ethertype;
491 int ret = 0;
492 #ifdef CONFIG_NET_CLS_IND
493 if (tb[TCA_FLOWER_INDEV]) {
494 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]);
495 if (err < 0)
496 return err;
497 key->indev_ifindex = err;
498 mask->indev_ifindex = 0xffffffff;
499 }
500 #endif
501
502 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
503 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
504 sizeof(key->eth.dst));
505 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
506 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
507 sizeof(key->eth.src));
508
509 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
510 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
511
512 if (ethertype == htons(ETH_P_8021Q)) {
513 fl_set_key_vlan(tb, &key->vlan, &mask->vlan);
514 fl_set_key_val(tb, &key->basic.n_proto,
515 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
516 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
517 sizeof(key->basic.n_proto));
518 } else {
519 key->basic.n_proto = ethertype;
520 mask->basic.n_proto = cpu_to_be16(~0);
521 }
522 }
523
524 if (key->basic.n_proto == htons(ETH_P_IP) ||
525 key->basic.n_proto == htons(ETH_P_IPV6)) {
526 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
527 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
528 sizeof(key->basic.ip_proto));
529 }
530
531 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
532 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
533 mask->control.addr_type = ~0;
534 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
535 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
536 sizeof(key->ipv4.src));
537 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
538 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
539 sizeof(key->ipv4.dst));
540 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
541 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
542 mask->control.addr_type = ~0;
543 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
544 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
545 sizeof(key->ipv6.src));
546 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
547 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
548 sizeof(key->ipv6.dst));
549 }
550
551 if (key->basic.ip_proto == IPPROTO_TCP) {
552 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
553 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
554 sizeof(key->tp.src));
555 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
556 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
557 sizeof(key->tp.dst));
558 } else if (key->basic.ip_proto == IPPROTO_UDP) {
559 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
560 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
561 sizeof(key->tp.src));
562 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
563 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
564 sizeof(key->tp.dst));
565 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
566 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
567 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
568 sizeof(key->tp.src));
569 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
570 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
571 sizeof(key->tp.dst));
572 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
573 key->basic.ip_proto == IPPROTO_ICMP) {
574 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
575 &mask->icmp.type,
576 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
577 sizeof(key->icmp.type));
578 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
579 &mask->icmp.code,
580 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
581 sizeof(key->icmp.code));
582 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
583 key->basic.ip_proto == IPPROTO_ICMPV6) {
584 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
585 &mask->icmp.type,
586 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
587 sizeof(key->icmp.type));
588 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
589 &mask->icmp.code,
590 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
591 sizeof(key->icmp.code));
592 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
593 key->basic.n_proto == htons(ETH_P_RARP)) {
594 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
595 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
596 sizeof(key->arp.sip));
597 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
598 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
599 sizeof(key->arp.tip));
600 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
601 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
602 sizeof(key->arp.op));
603 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
604 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
605 sizeof(key->arp.sha));
606 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
607 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
608 sizeof(key->arp.tha));
609 }
610
611 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
612 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
613 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
614 mask->enc_control.addr_type = ~0;
615 fl_set_key_val(tb, &key->enc_ipv4.src,
616 TCA_FLOWER_KEY_ENC_IPV4_SRC,
617 &mask->enc_ipv4.src,
618 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
619 sizeof(key->enc_ipv4.src));
620 fl_set_key_val(tb, &key->enc_ipv4.dst,
621 TCA_FLOWER_KEY_ENC_IPV4_DST,
622 &mask->enc_ipv4.dst,
623 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
624 sizeof(key->enc_ipv4.dst));
625 }
626
627 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
628 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
629 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
630 mask->enc_control.addr_type = ~0;
631 fl_set_key_val(tb, &key->enc_ipv6.src,
632 TCA_FLOWER_KEY_ENC_IPV6_SRC,
633 &mask->enc_ipv6.src,
634 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
635 sizeof(key->enc_ipv6.src));
636 fl_set_key_val(tb, &key->enc_ipv6.dst,
637 TCA_FLOWER_KEY_ENC_IPV6_DST,
638 &mask->enc_ipv6.dst,
639 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
640 sizeof(key->enc_ipv6.dst));
641 }
642
643 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
644 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
645 sizeof(key->enc_key_id.keyid));
646
647 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
648 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
649 sizeof(key->enc_tp.src));
650
651 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
652 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
653 sizeof(key->enc_tp.dst));
654
655 if (tb[TCA_FLOWER_KEY_FLAGS])
656 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
657
658 return ret;
659 }
660
661 static bool fl_mask_eq(struct fl_flow_mask *mask1,
662 struct fl_flow_mask *mask2)
663 {
664 const long *lmask1 = fl_key_get_start(&mask1->key, mask1);
665 const long *lmask2 = fl_key_get_start(&mask2->key, mask2);
666
667 return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) &&
668 !memcmp(lmask1, lmask2, fl_mask_range(mask1));
669 }
670
671 static const struct rhashtable_params fl_ht_params = {
672 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
673 .head_offset = offsetof(struct cls_fl_filter, ht_node),
674 .automatic_shrinking = true,
675 };
676
677 static int fl_init_hashtable(struct cls_fl_head *head,
678 struct fl_flow_mask *mask)
679 {
680 head->ht_params = fl_ht_params;
681 head->ht_params.key_len = fl_mask_range(mask);
682 head->ht_params.key_offset += mask->range.start;
683
684 return rhashtable_init(&head->ht, &head->ht_params);
685 }
686
687 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
688 #define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
689
690 #define FL_KEY_IS_MASKED(mask, member) \
691 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
692 0, FL_KEY_MEMBER_SIZE(member)) \
693
694 #define FL_KEY_SET(keys, cnt, id, member) \
695 do { \
696 keys[cnt].key_id = id; \
697 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
698 cnt++; \
699 } while(0);
700
701 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
702 do { \
703 if (FL_KEY_IS_MASKED(mask, member)) \
704 FL_KEY_SET(keys, cnt, id, member); \
705 } while(0);
706
707 static void fl_init_dissector(struct cls_fl_head *head,
708 struct fl_flow_mask *mask)
709 {
710 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
711 size_t cnt = 0;
712
713 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
714 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
715 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
716 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
717 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
718 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
719 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
720 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
721 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
722 FLOW_DISSECTOR_KEY_PORTS, tp);
723 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
724 FLOW_DISSECTOR_KEY_ICMP, icmp);
725 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
726 FLOW_DISSECTOR_KEY_ARP, arp);
727 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
728 FLOW_DISSECTOR_KEY_VLAN, vlan);
729 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
730 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
731 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
732 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
733 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
734 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
735 if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) ||
736 FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
737 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
738 enc_control);
739 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
740 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
741
742 skb_flow_dissector_init(&head->dissector, keys, cnt);
743 }
744
745 static int fl_check_assign_mask(struct cls_fl_head *head,
746 struct fl_flow_mask *mask)
747 {
748 int err;
749
750 if (head->mask_assigned) {
751 if (!fl_mask_eq(&head->mask, mask))
752 return -EINVAL;
753 else
754 return 0;
755 }
756
757 /* Mask is not assigned yet. So assign it and init hashtable
758 * according to that.
759 */
760 err = fl_init_hashtable(head, mask);
761 if (err)
762 return err;
763 memcpy(&head->mask, mask, sizeof(head->mask));
764 head->mask_assigned = true;
765
766 fl_init_dissector(head, mask);
767
768 return 0;
769 }
770
771 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
772 struct cls_fl_filter *f, struct fl_flow_mask *mask,
773 unsigned long base, struct nlattr **tb,
774 struct nlattr *est, bool ovr)
775 {
776 struct tcf_exts e;
777 int err;
778
779 err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0);
780 if (err < 0)
781 return err;
782 err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
783 if (err < 0)
784 goto errout;
785
786 if (tb[TCA_FLOWER_CLASSID]) {
787 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
788 tcf_bind_filter(tp, &f->res, base);
789 }
790
791 err = fl_set_key(net, tb, &f->key, &mask->key);
792 if (err)
793 goto errout;
794
795 fl_mask_update_range(mask);
796 fl_set_masked_key(&f->mkey, &f->key, mask);
797
798 tcf_exts_change(tp, &f->exts, &e);
799
800 return 0;
801 errout:
802 tcf_exts_destroy(&e);
803 return err;
804 }
805
806 static u32 fl_grab_new_handle(struct tcf_proto *tp,
807 struct cls_fl_head *head)
808 {
809 unsigned int i = 0x80000000;
810 u32 handle;
811
812 do {
813 if (++head->hgen == 0x7FFFFFFF)
814 head->hgen = 1;
815 } while (--i > 0 && fl_get(tp, head->hgen));
816
817 if (unlikely(i == 0)) {
818 pr_err("Insufficient number of handles\n");
819 handle = 0;
820 } else {
821 handle = head->hgen;
822 }
823
824 return handle;
825 }
826
827 static int fl_change(struct net *net, struct sk_buff *in_skb,
828 struct tcf_proto *tp, unsigned long base,
829 u32 handle, struct nlattr **tca,
830 unsigned long *arg, bool ovr)
831 {
832 struct cls_fl_head *head = rtnl_dereference(tp->root);
833 struct cls_fl_filter *fold = (struct cls_fl_filter *) *arg;
834 struct cls_fl_filter *fnew;
835 struct nlattr **tb;
836 struct fl_flow_mask mask = {};
837 int err;
838
839 if (!tca[TCA_OPTIONS])
840 return -EINVAL;
841
842 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
843 if (!tb)
844 return -ENOBUFS;
845
846 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy);
847 if (err < 0)
848 goto errout_tb;
849
850 if (fold && handle && fold->handle != handle) {
851 err = -EINVAL;
852 goto errout_tb;
853 }
854
855 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
856 if (!fnew) {
857 err = -ENOBUFS;
858 goto errout_tb;
859 }
860
861 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
862 if (err < 0)
863 goto errout;
864
865 if (!handle) {
866 handle = fl_grab_new_handle(tp, head);
867 if (!handle) {
868 err = -EINVAL;
869 goto errout;
870 }
871 }
872 fnew->handle = handle;
873
874 if (tb[TCA_FLOWER_FLAGS]) {
875 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
876
877 if (!tc_flags_valid(fnew->flags)) {
878 err = -EINVAL;
879 goto errout;
880 }
881 }
882
883 err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr);
884 if (err)
885 goto errout;
886
887 err = fl_check_assign_mask(head, &mask);
888 if (err)
889 goto errout;
890
891 if (!tc_skip_sw(fnew->flags)) {
892 if (!fold && fl_lookup(head, &fnew->mkey)) {
893 err = -EEXIST;
894 goto errout;
895 }
896
897 err = rhashtable_insert_fast(&head->ht, &fnew->ht_node,
898 head->ht_params);
899 if (err)
900 goto errout;
901 }
902
903 if (!tc_skip_hw(fnew->flags)) {
904 err = fl_hw_replace_filter(tp,
905 &head->dissector,
906 &mask.key,
907 fnew);
908 if (err)
909 goto errout;
910 }
911
912 if (fold) {
913 if (!tc_skip_sw(fold->flags))
914 rhashtable_remove_fast(&head->ht, &fold->ht_node,
915 head->ht_params);
916 if (!tc_skip_hw(fold->flags))
917 fl_hw_destroy_filter(tp, fold);
918 }
919
920 *arg = (unsigned long) fnew;
921
922 if (fold) {
923 list_replace_rcu(&fold->list, &fnew->list);
924 tcf_unbind_filter(tp, &fold->res);
925 call_rcu(&fold->rcu, fl_destroy_filter);
926 } else {
927 list_add_tail_rcu(&fnew->list, &head->filters);
928 }
929
930 kfree(tb);
931 return 0;
932
933 errout:
934 tcf_exts_destroy(&fnew->exts);
935 kfree(fnew);
936 errout_tb:
937 kfree(tb);
938 return err;
939 }
940
941 static int fl_delete(struct tcf_proto *tp, unsigned long arg)
942 {
943 struct cls_fl_head *head = rtnl_dereference(tp->root);
944 struct cls_fl_filter *f = (struct cls_fl_filter *) arg;
945
946 if (!tc_skip_sw(f->flags))
947 rhashtable_remove_fast(&head->ht, &f->ht_node,
948 head->ht_params);
949 __fl_delete(tp, f);
950 return 0;
951 }
952
953 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
954 {
955 struct cls_fl_head *head = rtnl_dereference(tp->root);
956 struct cls_fl_filter *f;
957
958 list_for_each_entry_rcu(f, &head->filters, list) {
959 if (arg->count < arg->skip)
960 goto skip;
961 if (arg->fn(tp, (unsigned long) f, arg) < 0) {
962 arg->stop = 1;
963 break;
964 }
965 skip:
966 arg->count++;
967 }
968 }
969
970 static int fl_dump_key_val(struct sk_buff *skb,
971 void *val, int val_type,
972 void *mask, int mask_type, int len)
973 {
974 int err;
975
976 if (!memchr_inv(mask, 0, len))
977 return 0;
978 err = nla_put(skb, val_type, len, val);
979 if (err)
980 return err;
981 if (mask_type != TCA_FLOWER_UNSPEC) {
982 err = nla_put(skb, mask_type, len, mask);
983 if (err)
984 return err;
985 }
986 return 0;
987 }
988
989 static int fl_dump_key_vlan(struct sk_buff *skb,
990 struct flow_dissector_key_vlan *vlan_key,
991 struct flow_dissector_key_vlan *vlan_mask)
992 {
993 int err;
994
995 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
996 return 0;
997 if (vlan_mask->vlan_id) {
998 err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID,
999 vlan_key->vlan_id);
1000 if (err)
1001 return err;
1002 }
1003 if (vlan_mask->vlan_priority) {
1004 err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO,
1005 vlan_key->vlan_priority);
1006 if (err)
1007 return err;
1008 }
1009 return 0;
1010 }
1011
1012 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
1013 u32 *flower_key, u32 *flower_mask,
1014 u32 flower_flag_bit, u32 dissector_flag_bit)
1015 {
1016 if (dissector_mask & dissector_flag_bit) {
1017 *flower_mask |= flower_flag_bit;
1018 if (dissector_key & dissector_flag_bit)
1019 *flower_key |= flower_flag_bit;
1020 }
1021 }
1022
1023 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1024 {
1025 u32 key, mask;
1026 __be32 _key, _mask;
1027 int err;
1028
1029 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1030 return 0;
1031
1032 key = 0;
1033 mask = 0;
1034
1035 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1036 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1037
1038 _key = cpu_to_be32(key);
1039 _mask = cpu_to_be32(mask);
1040
1041 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1042 if (err)
1043 return err;
1044
1045 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1046 }
1047
1048 static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
1049 struct sk_buff *skb, struct tcmsg *t)
1050 {
1051 struct cls_fl_head *head = rtnl_dereference(tp->root);
1052 struct cls_fl_filter *f = (struct cls_fl_filter *) fh;
1053 struct nlattr *nest;
1054 struct fl_flow_key *key, *mask;
1055
1056 if (!f)
1057 return skb->len;
1058
1059 t->tcm_handle = f->handle;
1060
1061 nest = nla_nest_start(skb, TCA_OPTIONS);
1062 if (!nest)
1063 goto nla_put_failure;
1064
1065 if (f->res.classid &&
1066 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
1067 goto nla_put_failure;
1068
1069 key = &f->key;
1070 mask = &head->mask.key;
1071
1072 if (mask->indev_ifindex) {
1073 struct net_device *dev;
1074
1075 dev = __dev_get_by_index(net, key->indev_ifindex);
1076 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1077 goto nla_put_failure;
1078 }
1079
1080 if (!tc_skip_hw(f->flags))
1081 fl_hw_update_stats(tp, f);
1082
1083 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1084 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1085 sizeof(key->eth.dst)) ||
1086 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1087 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1088 sizeof(key->eth.src)) ||
1089 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1090 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1091 sizeof(key->basic.n_proto)))
1092 goto nla_put_failure;
1093
1094 if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan))
1095 goto nla_put_failure;
1096
1097 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1098 key->basic.n_proto == htons(ETH_P_IPV6)) &&
1099 fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1100 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1101 sizeof(key->basic.ip_proto)))
1102 goto nla_put_failure;
1103
1104 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1105 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1106 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1107 sizeof(key->ipv4.src)) ||
1108 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1109 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1110 sizeof(key->ipv4.dst))))
1111 goto nla_put_failure;
1112 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1113 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1114 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1115 sizeof(key->ipv6.src)) ||
1116 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1117 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1118 sizeof(key->ipv6.dst))))
1119 goto nla_put_failure;
1120
1121 if (key->basic.ip_proto == IPPROTO_TCP &&
1122 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1123 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1124 sizeof(key->tp.src)) ||
1125 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1126 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1127 sizeof(key->tp.dst))))
1128 goto nla_put_failure;
1129 else if (key->basic.ip_proto == IPPROTO_UDP &&
1130 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1131 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1132 sizeof(key->tp.src)) ||
1133 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1134 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1135 sizeof(key->tp.dst))))
1136 goto nla_put_failure;
1137 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1138 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1139 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1140 sizeof(key->tp.src)) ||
1141 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1142 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1143 sizeof(key->tp.dst))))
1144 goto nla_put_failure;
1145 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1146 key->basic.ip_proto == IPPROTO_ICMP &&
1147 (fl_dump_key_val(skb, &key->icmp.type,
1148 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1149 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1150 sizeof(key->icmp.type)) ||
1151 fl_dump_key_val(skb, &key->icmp.code,
1152 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1153 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1154 sizeof(key->icmp.code))))
1155 goto nla_put_failure;
1156 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1157 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1158 (fl_dump_key_val(skb, &key->icmp.type,
1159 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1160 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1161 sizeof(key->icmp.type)) ||
1162 fl_dump_key_val(skb, &key->icmp.code,
1163 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1164 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1165 sizeof(key->icmp.code))))
1166 goto nla_put_failure;
1167 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1168 key->basic.n_proto == htons(ETH_P_RARP)) &&
1169 (fl_dump_key_val(skb, &key->arp.sip,
1170 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1171 TCA_FLOWER_KEY_ARP_SIP_MASK,
1172 sizeof(key->arp.sip)) ||
1173 fl_dump_key_val(skb, &key->arp.tip,
1174 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1175 TCA_FLOWER_KEY_ARP_TIP_MASK,
1176 sizeof(key->arp.tip)) ||
1177 fl_dump_key_val(skb, &key->arp.op,
1178 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1179 TCA_FLOWER_KEY_ARP_OP_MASK,
1180 sizeof(key->arp.op)) ||
1181 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1182 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1183 sizeof(key->arp.sha)) ||
1184 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1185 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1186 sizeof(key->arp.tha))))
1187 goto nla_put_failure;
1188
1189 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1190 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1191 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1192 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1193 sizeof(key->enc_ipv4.src)) ||
1194 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1195 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1196 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1197 sizeof(key->enc_ipv4.dst))))
1198 goto nla_put_failure;
1199 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1200 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1201 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1202 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1203 sizeof(key->enc_ipv6.src)) ||
1204 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1205 TCA_FLOWER_KEY_ENC_IPV6_DST,
1206 &mask->enc_ipv6.dst,
1207 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1208 sizeof(key->enc_ipv6.dst))))
1209 goto nla_put_failure;
1210
1211 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
1212 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
1213 sizeof(key->enc_key_id)) ||
1214 fl_dump_key_val(skb, &key->enc_tp.src,
1215 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1216 &mask->enc_tp.src,
1217 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1218 sizeof(key->enc_tp.src)) ||
1219 fl_dump_key_val(skb, &key->enc_tp.dst,
1220 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1221 &mask->enc_tp.dst,
1222 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1223 sizeof(key->enc_tp.dst)))
1224 goto nla_put_failure;
1225
1226 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
1227 goto nla_put_failure;
1228
1229 nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags);
1230
1231 if (tcf_exts_dump(skb, &f->exts))
1232 goto nla_put_failure;
1233
1234 nla_nest_end(skb, nest);
1235
1236 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
1237 goto nla_put_failure;
1238
1239 return skb->len;
1240
1241 nla_put_failure:
1242 nla_nest_cancel(skb, nest);
1243 return -1;
1244 }
1245
1246 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
1247 .kind = "flower",
1248 .classify = fl_classify,
1249 .init = fl_init,
1250 .destroy = fl_destroy,
1251 .get = fl_get,
1252 .change = fl_change,
1253 .delete = fl_delete,
1254 .walk = fl_walk,
1255 .dump = fl_dump,
1256 .owner = THIS_MODULE,
1257 };
1258
1259 static int __init cls_fl_init(void)
1260 {
1261 return register_tcf_proto_ops(&cls_fl_ops);
1262 }
1263
1264 static void __exit cls_fl_exit(void)
1265 {
1266 unregister_tcf_proto_ops(&cls_fl_ops);
1267 }
1268
1269 module_init(cls_fl_init);
1270 module_exit(cls_fl_exit);
1271
1272 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1273 MODULE_DESCRIPTION("Flower classifier");
1274 MODULE_LICENSE("GPL v2");
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