Commit | Line | Data |
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77b9900e JP |
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> | |
d9363774 | 16 | #include <linux/workqueue.h> |
77b9900e JP |
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 | ||
bc3103f1 AV |
27 | #include <net/dst.h> |
28 | #include <net/dst_metadata.h> | |
29 | ||
77b9900e JP |
30 | struct fl_flow_key { |
31 | int indev_ifindex; | |
42aecaa9 | 32 | struct flow_dissector_key_control control; |
bc3103f1 | 33 | struct flow_dissector_key_control enc_control; |
77b9900e JP |
34 | struct flow_dissector_key_basic basic; |
35 | struct flow_dissector_key_eth_addrs eth; | |
9399ae9a | 36 | struct flow_dissector_key_vlan vlan; |
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; | |
bc3103f1 AV |
42 | struct flow_dissector_key_keyid enc_key_id; |
43 | union { | |
44 | struct flow_dissector_key_ipv4_addrs enc_ipv4; | |
45 | struct flow_dissector_key_ipv6_addrs enc_ipv6; | |
46 | }; | |
77b9900e JP |
47 | } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ |
48 | ||
49 | struct fl_flow_mask_range { | |
50 | unsigned short int start; | |
51 | unsigned short int end; | |
52 | }; | |
53 | ||
54 | struct fl_flow_mask { | |
55 | struct fl_flow_key key; | |
56 | struct fl_flow_mask_range range; | |
57 | struct rcu_head rcu; | |
58 | }; | |
59 | ||
60 | struct cls_fl_head { | |
61 | struct rhashtable ht; | |
62 | struct fl_flow_mask mask; | |
63 | struct flow_dissector dissector; | |
64 | u32 hgen; | |
65 | bool mask_assigned; | |
66 | struct list_head filters; | |
67 | struct rhashtable_params ht_params; | |
d9363774 DB |
68 | union { |
69 | struct work_struct work; | |
70 | struct rcu_head rcu; | |
71 | }; | |
77b9900e JP |
72 | }; |
73 | ||
74 | struct cls_fl_filter { | |
75 | struct rhash_head ht_node; | |
76 | struct fl_flow_key mkey; | |
77 | struct tcf_exts exts; | |
78 | struct tcf_result res; | |
79 | struct fl_flow_key key; | |
80 | struct list_head list; | |
81 | u32 handle; | |
e69985c6 | 82 | u32 flags; |
77b9900e JP |
83 | struct rcu_head rcu; |
84 | }; | |
85 | ||
86 | static unsigned short int fl_mask_range(const struct fl_flow_mask *mask) | |
87 | { | |
88 | return mask->range.end - mask->range.start; | |
89 | } | |
90 | ||
91 | static void fl_mask_update_range(struct fl_flow_mask *mask) | |
92 | { | |
93 | const u8 *bytes = (const u8 *) &mask->key; | |
94 | size_t size = sizeof(mask->key); | |
95 | size_t i, first = 0, last = size - 1; | |
96 | ||
97 | for (i = 0; i < sizeof(mask->key); i++) { | |
98 | if (bytes[i]) { | |
99 | if (!first && i) | |
100 | first = i; | |
101 | last = i; | |
102 | } | |
103 | } | |
104 | mask->range.start = rounddown(first, sizeof(long)); | |
105 | mask->range.end = roundup(last + 1, sizeof(long)); | |
106 | } | |
107 | ||
108 | static void *fl_key_get_start(struct fl_flow_key *key, | |
109 | const struct fl_flow_mask *mask) | |
110 | { | |
111 | return (u8 *) key + mask->range.start; | |
112 | } | |
113 | ||
114 | static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key, | |
115 | struct fl_flow_mask *mask) | |
116 | { | |
117 | const long *lkey = fl_key_get_start(key, mask); | |
118 | const long *lmask = fl_key_get_start(&mask->key, mask); | |
119 | long *lmkey = fl_key_get_start(mkey, mask); | |
120 | int i; | |
121 | ||
122 | for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) | |
123 | *lmkey++ = *lkey++ & *lmask++; | |
124 | } | |
125 | ||
126 | static void fl_clear_masked_range(struct fl_flow_key *key, | |
127 | struct fl_flow_mask *mask) | |
128 | { | |
129 | memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask)); | |
130 | } | |
131 | ||
132 | static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp, | |
133 | struct tcf_result *res) | |
134 | { | |
135 | struct cls_fl_head *head = rcu_dereference_bh(tp->root); | |
136 | struct cls_fl_filter *f; | |
137 | struct fl_flow_key skb_key; | |
138 | struct fl_flow_key skb_mkey; | |
bc3103f1 | 139 | struct ip_tunnel_info *info; |
77b9900e | 140 | |
e69985c6 AV |
141 | if (!atomic_read(&head->ht.nelems)) |
142 | return -1; | |
143 | ||
77b9900e | 144 | fl_clear_masked_range(&skb_key, &head->mask); |
bc3103f1 AV |
145 | |
146 | info = skb_tunnel_info(skb); | |
147 | if (info) { | |
148 | struct ip_tunnel_key *key = &info->key; | |
149 | ||
150 | switch (ip_tunnel_info_af(info)) { | |
151 | case AF_INET: | |
152 | skb_key.enc_ipv4.src = key->u.ipv4.src; | |
153 | skb_key.enc_ipv4.dst = key->u.ipv4.dst; | |
154 | break; | |
155 | case AF_INET6: | |
156 | skb_key.enc_ipv6.src = key->u.ipv6.src; | |
157 | skb_key.enc_ipv6.dst = key->u.ipv6.dst; | |
158 | break; | |
159 | } | |
160 | ||
161 | skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id); | |
162 | } | |
163 | ||
77b9900e JP |
164 | skb_key.indev_ifindex = skb->skb_iif; |
165 | /* skb_flow_dissect() does not set n_proto in case an unknown protocol, | |
166 | * so do it rather here. | |
167 | */ | |
168 | skb_key.basic.n_proto = skb->protocol; | |
cd79a238 | 169 | skb_flow_dissect(skb, &head->dissector, &skb_key, 0); |
77b9900e JP |
170 | |
171 | fl_set_masked_key(&skb_mkey, &skb_key, &head->mask); | |
172 | ||
173 | f = rhashtable_lookup_fast(&head->ht, | |
174 | fl_key_get_start(&skb_mkey, &head->mask), | |
175 | head->ht_params); | |
e8eb36cd | 176 | if (f && !tc_skip_sw(f->flags)) { |
77b9900e JP |
177 | *res = f->res; |
178 | return tcf_exts_exec(skb, &f->exts, res); | |
179 | } | |
180 | return -1; | |
181 | } | |
182 | ||
183 | static int fl_init(struct tcf_proto *tp) | |
184 | { | |
185 | struct cls_fl_head *head; | |
186 | ||
187 | head = kzalloc(sizeof(*head), GFP_KERNEL); | |
188 | if (!head) | |
189 | return -ENOBUFS; | |
190 | ||
191 | INIT_LIST_HEAD_RCU(&head->filters); | |
192 | rcu_assign_pointer(tp->root, head); | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | static void fl_destroy_filter(struct rcu_head *head) | |
198 | { | |
199 | struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu); | |
200 | ||
201 | tcf_exts_destroy(&f->exts); | |
202 | kfree(f); | |
203 | } | |
204 | ||
8208d21b | 205 | static void fl_hw_destroy_filter(struct tcf_proto *tp, unsigned long cookie) |
5b33f488 AV |
206 | { |
207 | struct net_device *dev = tp->q->dev_queue->dev; | |
208 | struct tc_cls_flower_offload offload = {0}; | |
209 | struct tc_to_netdev tc; | |
210 | ||
92c075db | 211 | if (!tc_should_offload(dev, tp, 0)) |
5b33f488 AV |
212 | return; |
213 | ||
214 | offload.command = TC_CLSFLOWER_DESTROY; | |
215 | offload.cookie = cookie; | |
216 | ||
217 | tc.type = TC_SETUP_CLSFLOWER; | |
218 | tc.cls_flower = &offload; | |
219 | ||
220 | dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc); | |
221 | } | |
222 | ||
e8eb36cd AV |
223 | static int fl_hw_replace_filter(struct tcf_proto *tp, |
224 | struct flow_dissector *dissector, | |
225 | struct fl_flow_key *mask, | |
226 | struct fl_flow_key *key, | |
227 | struct tcf_exts *actions, | |
228 | unsigned long cookie, u32 flags) | |
5b33f488 AV |
229 | { |
230 | struct net_device *dev = tp->q->dev_queue->dev; | |
231 | struct tc_cls_flower_offload offload = {0}; | |
232 | struct tc_to_netdev tc; | |
e8eb36cd | 233 | int err; |
5b33f488 | 234 | |
92c075db | 235 | if (!tc_should_offload(dev, tp, flags)) |
e8eb36cd | 236 | return tc_skip_sw(flags) ? -EINVAL : 0; |
5b33f488 AV |
237 | |
238 | offload.command = TC_CLSFLOWER_REPLACE; | |
239 | offload.cookie = cookie; | |
240 | offload.dissector = dissector; | |
241 | offload.mask = mask; | |
242 | offload.key = key; | |
243 | offload.exts = actions; | |
244 | ||
245 | tc.type = TC_SETUP_CLSFLOWER; | |
246 | tc.cls_flower = &offload; | |
247 | ||
5a7a5555 JHS |
248 | err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, |
249 | &tc); | |
e8eb36cd AV |
250 | |
251 | if (tc_skip_sw(flags)) | |
252 | return err; | |
253 | ||
254 | return 0; | |
5b33f488 AV |
255 | } |
256 | ||
10cbc684 AV |
257 | static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f) |
258 | { | |
259 | struct net_device *dev = tp->q->dev_queue->dev; | |
260 | struct tc_cls_flower_offload offload = {0}; | |
261 | struct tc_to_netdev tc; | |
262 | ||
92c075db | 263 | if (!tc_should_offload(dev, tp, 0)) |
10cbc684 AV |
264 | return; |
265 | ||
266 | offload.command = TC_CLSFLOWER_STATS; | |
267 | offload.cookie = (unsigned long)f; | |
268 | offload.exts = &f->exts; | |
269 | ||
270 | tc.type = TC_SETUP_CLSFLOWER; | |
271 | tc.cls_flower = &offload; | |
272 | ||
273 | dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc); | |
274 | } | |
275 | ||
d9363774 DB |
276 | static void fl_destroy_sleepable(struct work_struct *work) |
277 | { | |
278 | struct cls_fl_head *head = container_of(work, struct cls_fl_head, | |
279 | work); | |
280 | if (head->mask_assigned) | |
281 | rhashtable_destroy(&head->ht); | |
282 | kfree(head); | |
283 | module_put(THIS_MODULE); | |
284 | } | |
285 | ||
286 | static void fl_destroy_rcu(struct rcu_head *rcu) | |
287 | { | |
288 | struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu); | |
289 | ||
290 | INIT_WORK(&head->work, fl_destroy_sleepable); | |
291 | schedule_work(&head->work); | |
292 | } | |
293 | ||
77b9900e JP |
294 | static bool fl_destroy(struct tcf_proto *tp, bool force) |
295 | { | |
296 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
297 | struct cls_fl_filter *f, *next; | |
298 | ||
299 | if (!force && !list_empty(&head->filters)) | |
300 | return false; | |
301 | ||
302 | list_for_each_entry_safe(f, next, &head->filters, list) { | |
8208d21b | 303 | fl_hw_destroy_filter(tp, (unsigned long)f); |
77b9900e JP |
304 | list_del_rcu(&f->list); |
305 | call_rcu(&f->rcu, fl_destroy_filter); | |
306 | } | |
d9363774 DB |
307 | |
308 | __module_get(THIS_MODULE); | |
309 | call_rcu(&head->rcu, fl_destroy_rcu); | |
77b9900e JP |
310 | return true; |
311 | } | |
312 | ||
313 | static unsigned long fl_get(struct tcf_proto *tp, u32 handle) | |
314 | { | |
315 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
316 | struct cls_fl_filter *f; | |
317 | ||
318 | list_for_each_entry(f, &head->filters, list) | |
319 | if (f->handle == handle) | |
320 | return (unsigned long) f; | |
321 | return 0; | |
322 | } | |
323 | ||
324 | static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = { | |
325 | [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC }, | |
326 | [TCA_FLOWER_CLASSID] = { .type = NLA_U32 }, | |
327 | [TCA_FLOWER_INDEV] = { .type = NLA_STRING, | |
328 | .len = IFNAMSIZ }, | |
329 | [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN }, | |
330 | [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN }, | |
331 | [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN }, | |
332 | [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN }, | |
333 | [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 }, | |
334 | [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 }, | |
335 | [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 }, | |
336 | [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 }, | |
337 | [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 }, | |
338 | [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 }, | |
339 | [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, | |
340 | [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, | |
341 | [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
342 | [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, | |
343 | [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 }, | |
344 | [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 }, | |
b175c3a4 JHS |
345 | [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 }, |
346 | [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 }, | |
9399ae9a HHZ |
347 | [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 }, |
348 | [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 }, | |
349 | [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 }, | |
bc3103f1 AV |
350 | [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 }, |
351 | [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 }, | |
352 | [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 }, | |
353 | [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 }, | |
354 | [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 }, | |
355 | [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, | |
356 | [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, | |
357 | [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
358 | [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, | |
aa72d708 OG |
359 | [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 }, |
360 | [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 }, | |
361 | [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 }, | |
362 | [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 }, | |
77b9900e JP |
363 | }; |
364 | ||
365 | static void fl_set_key_val(struct nlattr **tb, | |
366 | void *val, int val_type, | |
367 | void *mask, int mask_type, int len) | |
368 | { | |
369 | if (!tb[val_type]) | |
370 | return; | |
371 | memcpy(val, nla_data(tb[val_type]), len); | |
372 | if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type]) | |
373 | memset(mask, 0xff, len); | |
374 | else | |
375 | memcpy(mask, nla_data(tb[mask_type]), len); | |
376 | } | |
377 | ||
9399ae9a HHZ |
378 | static void fl_set_key_vlan(struct nlattr **tb, |
379 | struct flow_dissector_key_vlan *key_val, | |
380 | struct flow_dissector_key_vlan *key_mask) | |
381 | { | |
382 | #define VLAN_PRIORITY_MASK 0x7 | |
383 | ||
384 | if (tb[TCA_FLOWER_KEY_VLAN_ID]) { | |
385 | key_val->vlan_id = | |
386 | nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK; | |
387 | key_mask->vlan_id = VLAN_VID_MASK; | |
388 | } | |
389 | if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) { | |
390 | key_val->vlan_priority = | |
391 | nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) & | |
392 | VLAN_PRIORITY_MASK; | |
393 | key_mask->vlan_priority = VLAN_PRIORITY_MASK; | |
394 | } | |
395 | } | |
396 | ||
77b9900e JP |
397 | static int fl_set_key(struct net *net, struct nlattr **tb, |
398 | struct fl_flow_key *key, struct fl_flow_key *mask) | |
399 | { | |
9399ae9a | 400 | __be16 ethertype; |
dd3aa3b5 | 401 | #ifdef CONFIG_NET_CLS_IND |
77b9900e | 402 | if (tb[TCA_FLOWER_INDEV]) { |
dd3aa3b5 | 403 | int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]); |
77b9900e JP |
404 | if (err < 0) |
405 | return err; | |
406 | key->indev_ifindex = err; | |
407 | mask->indev_ifindex = 0xffffffff; | |
408 | } | |
dd3aa3b5 | 409 | #endif |
77b9900e JP |
410 | |
411 | fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, | |
412 | mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, | |
413 | sizeof(key->eth.dst)); | |
414 | fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, | |
415 | mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, | |
416 | sizeof(key->eth.src)); | |
66530bdf | 417 | |
0b498a52 | 418 | if (tb[TCA_FLOWER_KEY_ETH_TYPE]) { |
9399ae9a HHZ |
419 | ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]); |
420 | ||
0b498a52 AB |
421 | if (ethertype == htons(ETH_P_8021Q)) { |
422 | fl_set_key_vlan(tb, &key->vlan, &mask->vlan); | |
423 | fl_set_key_val(tb, &key->basic.n_proto, | |
424 | TCA_FLOWER_KEY_VLAN_ETH_TYPE, | |
425 | &mask->basic.n_proto, TCA_FLOWER_UNSPEC, | |
426 | sizeof(key->basic.n_proto)); | |
427 | } else { | |
428 | key->basic.n_proto = ethertype; | |
429 | mask->basic.n_proto = cpu_to_be16(~0); | |
430 | } | |
9399ae9a | 431 | } |
66530bdf | 432 | |
77b9900e JP |
433 | if (key->basic.n_proto == htons(ETH_P_IP) || |
434 | key->basic.n_proto == htons(ETH_P_IPV6)) { | |
435 | fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, | |
436 | &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, | |
437 | sizeof(key->basic.ip_proto)); | |
438 | } | |
66530bdf JHS |
439 | |
440 | if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) { | |
441 | key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; | |
77b9900e JP |
442 | fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, |
443 | &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, | |
444 | sizeof(key->ipv4.src)); | |
445 | fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, | |
446 | &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, | |
447 | sizeof(key->ipv4.dst)); | |
66530bdf JHS |
448 | } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) { |
449 | key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; | |
77b9900e JP |
450 | fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, |
451 | &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, | |
452 | sizeof(key->ipv6.src)); | |
453 | fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, | |
454 | &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, | |
455 | sizeof(key->ipv6.dst)); | |
456 | } | |
66530bdf | 457 | |
77b9900e JP |
458 | if (key->basic.ip_proto == IPPROTO_TCP) { |
459 | fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, | |
aa72d708 | 460 | &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK, |
77b9900e JP |
461 | sizeof(key->tp.src)); |
462 | fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, | |
aa72d708 | 463 | &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK, |
77b9900e JP |
464 | sizeof(key->tp.dst)); |
465 | } else if (key->basic.ip_proto == IPPROTO_UDP) { | |
466 | fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, | |
aa72d708 | 467 | &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK, |
77b9900e JP |
468 | sizeof(key->tp.src)); |
469 | fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, | |
aa72d708 | 470 | &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK, |
77b9900e JP |
471 | sizeof(key->tp.dst)); |
472 | } | |
473 | ||
bc3103f1 AV |
474 | if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] || |
475 | tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) { | |
476 | key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; | |
477 | fl_set_key_val(tb, &key->enc_ipv4.src, | |
478 | TCA_FLOWER_KEY_ENC_IPV4_SRC, | |
479 | &mask->enc_ipv4.src, | |
480 | TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, | |
481 | sizeof(key->enc_ipv4.src)); | |
482 | fl_set_key_val(tb, &key->enc_ipv4.dst, | |
483 | TCA_FLOWER_KEY_ENC_IPV4_DST, | |
484 | &mask->enc_ipv4.dst, | |
485 | TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, | |
486 | sizeof(key->enc_ipv4.dst)); | |
487 | } | |
488 | ||
489 | if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] || | |
490 | tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) { | |
491 | key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; | |
492 | fl_set_key_val(tb, &key->enc_ipv6.src, | |
493 | TCA_FLOWER_KEY_ENC_IPV6_SRC, | |
494 | &mask->enc_ipv6.src, | |
495 | TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, | |
496 | sizeof(key->enc_ipv6.src)); | |
497 | fl_set_key_val(tb, &key->enc_ipv6.dst, | |
498 | TCA_FLOWER_KEY_ENC_IPV6_DST, | |
499 | &mask->enc_ipv6.dst, | |
500 | TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, | |
501 | sizeof(key->enc_ipv6.dst)); | |
502 | } | |
503 | ||
504 | fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID, | |
eb523f42 | 505 | &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC, |
bc3103f1 AV |
506 | sizeof(key->enc_key_id.keyid)); |
507 | ||
77b9900e JP |
508 | return 0; |
509 | } | |
510 | ||
511 | static bool fl_mask_eq(struct fl_flow_mask *mask1, | |
512 | struct fl_flow_mask *mask2) | |
513 | { | |
514 | const long *lmask1 = fl_key_get_start(&mask1->key, mask1); | |
515 | const long *lmask2 = fl_key_get_start(&mask2->key, mask2); | |
516 | ||
517 | return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) && | |
518 | !memcmp(lmask1, lmask2, fl_mask_range(mask1)); | |
519 | } | |
520 | ||
521 | static const struct rhashtable_params fl_ht_params = { | |
522 | .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */ | |
523 | .head_offset = offsetof(struct cls_fl_filter, ht_node), | |
524 | .automatic_shrinking = true, | |
525 | }; | |
526 | ||
527 | static int fl_init_hashtable(struct cls_fl_head *head, | |
528 | struct fl_flow_mask *mask) | |
529 | { | |
530 | head->ht_params = fl_ht_params; | |
531 | head->ht_params.key_len = fl_mask_range(mask); | |
532 | head->ht_params.key_offset += mask->range.start; | |
533 | ||
534 | return rhashtable_init(&head->ht, &head->ht_params); | |
535 | } | |
536 | ||
537 | #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member) | |
538 | #define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member)) | |
77b9900e | 539 | |
339ba878 HHZ |
540 | #define FL_KEY_IS_MASKED(mask, member) \ |
541 | memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \ | |
542 | 0, FL_KEY_MEMBER_SIZE(member)) \ | |
77b9900e JP |
543 | |
544 | #define FL_KEY_SET(keys, cnt, id, member) \ | |
545 | do { \ | |
546 | keys[cnt].key_id = id; \ | |
547 | keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \ | |
548 | cnt++; \ | |
549 | } while(0); | |
550 | ||
339ba878 | 551 | #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \ |
77b9900e | 552 | do { \ |
339ba878 | 553 | if (FL_KEY_IS_MASKED(mask, member)) \ |
77b9900e JP |
554 | FL_KEY_SET(keys, cnt, id, member); \ |
555 | } while(0); | |
556 | ||
557 | static void fl_init_dissector(struct cls_fl_head *head, | |
558 | struct fl_flow_mask *mask) | |
559 | { | |
560 | struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX]; | |
561 | size_t cnt = 0; | |
562 | ||
42aecaa9 | 563 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control); |
77b9900e | 564 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic); |
339ba878 HHZ |
565 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, |
566 | FLOW_DISSECTOR_KEY_ETH_ADDRS, eth); | |
567 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, | |
568 | FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4); | |
569 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, | |
570 | FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6); | |
571 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, | |
572 | FLOW_DISSECTOR_KEY_PORTS, tp); | |
9399ae9a HHZ |
573 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, |
574 | FLOW_DISSECTOR_KEY_VLAN, vlan); | |
77b9900e JP |
575 | |
576 | skb_flow_dissector_init(&head->dissector, keys, cnt); | |
577 | } | |
578 | ||
579 | static int fl_check_assign_mask(struct cls_fl_head *head, | |
580 | struct fl_flow_mask *mask) | |
581 | { | |
582 | int err; | |
583 | ||
584 | if (head->mask_assigned) { | |
585 | if (!fl_mask_eq(&head->mask, mask)) | |
586 | return -EINVAL; | |
587 | else | |
588 | return 0; | |
589 | } | |
590 | ||
591 | /* Mask is not assigned yet. So assign it and init hashtable | |
592 | * according to that. | |
593 | */ | |
594 | err = fl_init_hashtable(head, mask); | |
595 | if (err) | |
596 | return err; | |
597 | memcpy(&head->mask, mask, sizeof(head->mask)); | |
598 | head->mask_assigned = true; | |
599 | ||
600 | fl_init_dissector(head, mask); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
605 | static int fl_set_parms(struct net *net, struct tcf_proto *tp, | |
606 | struct cls_fl_filter *f, struct fl_flow_mask *mask, | |
607 | unsigned long base, struct nlattr **tb, | |
608 | struct nlattr *est, bool ovr) | |
609 | { | |
610 | struct tcf_exts e; | |
611 | int err; | |
612 | ||
b9a24bb7 | 613 | err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0); |
77b9900e JP |
614 | if (err < 0) |
615 | return err; | |
b9a24bb7 WC |
616 | err = tcf_exts_validate(net, tp, tb, est, &e, ovr); |
617 | if (err < 0) | |
618 | goto errout; | |
77b9900e JP |
619 | |
620 | if (tb[TCA_FLOWER_CLASSID]) { | |
621 | f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]); | |
622 | tcf_bind_filter(tp, &f->res, base); | |
623 | } | |
624 | ||
625 | err = fl_set_key(net, tb, &f->key, &mask->key); | |
626 | if (err) | |
627 | goto errout; | |
628 | ||
629 | fl_mask_update_range(mask); | |
630 | fl_set_masked_key(&f->mkey, &f->key, mask); | |
631 | ||
632 | tcf_exts_change(tp, &f->exts, &e); | |
633 | ||
634 | return 0; | |
635 | errout: | |
636 | tcf_exts_destroy(&e); | |
637 | return err; | |
638 | } | |
639 | ||
640 | static u32 fl_grab_new_handle(struct tcf_proto *tp, | |
641 | struct cls_fl_head *head) | |
642 | { | |
643 | unsigned int i = 0x80000000; | |
644 | u32 handle; | |
645 | ||
646 | do { | |
647 | if (++head->hgen == 0x7FFFFFFF) | |
648 | head->hgen = 1; | |
649 | } while (--i > 0 && fl_get(tp, head->hgen)); | |
650 | ||
651 | if (unlikely(i == 0)) { | |
652 | pr_err("Insufficient number of handles\n"); | |
653 | handle = 0; | |
654 | } else { | |
655 | handle = head->hgen; | |
656 | } | |
657 | ||
658 | return handle; | |
659 | } | |
660 | ||
661 | static int fl_change(struct net *net, struct sk_buff *in_skb, | |
662 | struct tcf_proto *tp, unsigned long base, | |
663 | u32 handle, struct nlattr **tca, | |
664 | unsigned long *arg, bool ovr) | |
665 | { | |
666 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
667 | struct cls_fl_filter *fold = (struct cls_fl_filter *) *arg; | |
668 | struct cls_fl_filter *fnew; | |
669 | struct nlattr *tb[TCA_FLOWER_MAX + 1]; | |
670 | struct fl_flow_mask mask = {}; | |
671 | int err; | |
672 | ||
673 | if (!tca[TCA_OPTIONS]) | |
674 | return -EINVAL; | |
675 | ||
676 | err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy); | |
677 | if (err < 0) | |
678 | return err; | |
679 | ||
680 | if (fold && handle && fold->handle != handle) | |
681 | return -EINVAL; | |
682 | ||
683 | fnew = kzalloc(sizeof(*fnew), GFP_KERNEL); | |
684 | if (!fnew) | |
685 | return -ENOBUFS; | |
686 | ||
b9a24bb7 WC |
687 | err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0); |
688 | if (err < 0) | |
689 | goto errout; | |
77b9900e JP |
690 | |
691 | if (!handle) { | |
692 | handle = fl_grab_new_handle(tp, head); | |
693 | if (!handle) { | |
694 | err = -EINVAL; | |
695 | goto errout; | |
696 | } | |
697 | } | |
698 | fnew->handle = handle; | |
699 | ||
e69985c6 AV |
700 | if (tb[TCA_FLOWER_FLAGS]) { |
701 | fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]); | |
702 | ||
703 | if (!tc_flags_valid(fnew->flags)) { | |
704 | err = -EINVAL; | |
705 | goto errout; | |
706 | } | |
707 | } | |
5b33f488 | 708 | |
77b9900e JP |
709 | err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr); |
710 | if (err) | |
711 | goto errout; | |
712 | ||
713 | err = fl_check_assign_mask(head, &mask); | |
714 | if (err) | |
715 | goto errout; | |
716 | ||
e8eb36cd | 717 | if (!tc_skip_sw(fnew->flags)) { |
e69985c6 AV |
718 | err = rhashtable_insert_fast(&head->ht, &fnew->ht_node, |
719 | head->ht_params); | |
720 | if (err) | |
721 | goto errout; | |
722 | } | |
5b33f488 | 723 | |
e8eb36cd AV |
724 | err = fl_hw_replace_filter(tp, |
725 | &head->dissector, | |
726 | &mask.key, | |
727 | &fnew->key, | |
728 | &fnew->exts, | |
729 | (unsigned long)fnew, | |
730 | fnew->flags); | |
731 | if (err) | |
732 | goto errout; | |
5b33f488 AV |
733 | |
734 | if (fold) { | |
77b9900e JP |
735 | rhashtable_remove_fast(&head->ht, &fold->ht_node, |
736 | head->ht_params); | |
8208d21b | 737 | fl_hw_destroy_filter(tp, (unsigned long)fold); |
5b33f488 | 738 | } |
77b9900e JP |
739 | |
740 | *arg = (unsigned long) fnew; | |
741 | ||
742 | if (fold) { | |
ff3532f2 | 743 | list_replace_rcu(&fold->list, &fnew->list); |
77b9900e JP |
744 | tcf_unbind_filter(tp, &fold->res); |
745 | call_rcu(&fold->rcu, fl_destroy_filter); | |
746 | } else { | |
747 | list_add_tail_rcu(&fnew->list, &head->filters); | |
748 | } | |
749 | ||
750 | return 0; | |
751 | ||
752 | errout: | |
b9a24bb7 | 753 | tcf_exts_destroy(&fnew->exts); |
77b9900e JP |
754 | kfree(fnew); |
755 | return err; | |
756 | } | |
757 | ||
758 | static int fl_delete(struct tcf_proto *tp, unsigned long arg) | |
759 | { | |
760 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
761 | struct cls_fl_filter *f = (struct cls_fl_filter *) arg; | |
762 | ||
763 | rhashtable_remove_fast(&head->ht, &f->ht_node, | |
764 | head->ht_params); | |
765 | list_del_rcu(&f->list); | |
8208d21b | 766 | fl_hw_destroy_filter(tp, (unsigned long)f); |
77b9900e JP |
767 | tcf_unbind_filter(tp, &f->res); |
768 | call_rcu(&f->rcu, fl_destroy_filter); | |
769 | return 0; | |
770 | } | |
771 | ||
772 | static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg) | |
773 | { | |
774 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
775 | struct cls_fl_filter *f; | |
776 | ||
777 | list_for_each_entry_rcu(f, &head->filters, list) { | |
778 | if (arg->count < arg->skip) | |
779 | goto skip; | |
780 | if (arg->fn(tp, (unsigned long) f, arg) < 0) { | |
781 | arg->stop = 1; | |
782 | break; | |
783 | } | |
784 | skip: | |
785 | arg->count++; | |
786 | } | |
787 | } | |
788 | ||
789 | static int fl_dump_key_val(struct sk_buff *skb, | |
790 | void *val, int val_type, | |
791 | void *mask, int mask_type, int len) | |
792 | { | |
793 | int err; | |
794 | ||
795 | if (!memchr_inv(mask, 0, len)) | |
796 | return 0; | |
797 | err = nla_put(skb, val_type, len, val); | |
798 | if (err) | |
799 | return err; | |
800 | if (mask_type != TCA_FLOWER_UNSPEC) { | |
801 | err = nla_put(skb, mask_type, len, mask); | |
802 | if (err) | |
803 | return err; | |
804 | } | |
805 | return 0; | |
806 | } | |
807 | ||
9399ae9a HHZ |
808 | static int fl_dump_key_vlan(struct sk_buff *skb, |
809 | struct flow_dissector_key_vlan *vlan_key, | |
810 | struct flow_dissector_key_vlan *vlan_mask) | |
811 | { | |
812 | int err; | |
813 | ||
814 | if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask))) | |
815 | return 0; | |
816 | if (vlan_mask->vlan_id) { | |
817 | err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID, | |
818 | vlan_key->vlan_id); | |
819 | if (err) | |
820 | return err; | |
821 | } | |
822 | if (vlan_mask->vlan_priority) { | |
823 | err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO, | |
824 | vlan_key->vlan_priority); | |
825 | if (err) | |
826 | return err; | |
827 | } | |
828 | return 0; | |
829 | } | |
830 | ||
77b9900e JP |
831 | static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh, |
832 | struct sk_buff *skb, struct tcmsg *t) | |
833 | { | |
834 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
835 | struct cls_fl_filter *f = (struct cls_fl_filter *) fh; | |
836 | struct nlattr *nest; | |
837 | struct fl_flow_key *key, *mask; | |
838 | ||
839 | if (!f) | |
840 | return skb->len; | |
841 | ||
842 | t->tcm_handle = f->handle; | |
843 | ||
844 | nest = nla_nest_start(skb, TCA_OPTIONS); | |
845 | if (!nest) | |
846 | goto nla_put_failure; | |
847 | ||
848 | if (f->res.classid && | |
849 | nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid)) | |
850 | goto nla_put_failure; | |
851 | ||
852 | key = &f->key; | |
853 | mask = &head->mask.key; | |
854 | ||
855 | if (mask->indev_ifindex) { | |
856 | struct net_device *dev; | |
857 | ||
858 | dev = __dev_get_by_index(net, key->indev_ifindex); | |
859 | if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name)) | |
860 | goto nla_put_failure; | |
861 | } | |
862 | ||
10cbc684 AV |
863 | fl_hw_update_stats(tp, f); |
864 | ||
77b9900e JP |
865 | if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, |
866 | mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, | |
867 | sizeof(key->eth.dst)) || | |
868 | fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, | |
869 | mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, | |
870 | sizeof(key->eth.src)) || | |
871 | fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE, | |
872 | &mask->basic.n_proto, TCA_FLOWER_UNSPEC, | |
873 | sizeof(key->basic.n_proto))) | |
874 | goto nla_put_failure; | |
9399ae9a HHZ |
875 | |
876 | if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan)) | |
877 | goto nla_put_failure; | |
878 | ||
77b9900e JP |
879 | if ((key->basic.n_proto == htons(ETH_P_IP) || |
880 | key->basic.n_proto == htons(ETH_P_IPV6)) && | |
881 | fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, | |
882 | &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, | |
883 | sizeof(key->basic.ip_proto))) | |
884 | goto nla_put_failure; | |
885 | ||
c3f83241 | 886 | if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && |
77b9900e JP |
887 | (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, |
888 | &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, | |
889 | sizeof(key->ipv4.src)) || | |
890 | fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, | |
891 | &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, | |
892 | sizeof(key->ipv4.dst)))) | |
893 | goto nla_put_failure; | |
c3f83241 | 894 | else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && |
77b9900e JP |
895 | (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, |
896 | &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, | |
897 | sizeof(key->ipv6.src)) || | |
898 | fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, | |
899 | &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, | |
900 | sizeof(key->ipv6.dst)))) | |
901 | goto nla_put_failure; | |
902 | ||
903 | if (key->basic.ip_proto == IPPROTO_TCP && | |
904 | (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, | |
aa72d708 | 905 | &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK, |
77b9900e JP |
906 | sizeof(key->tp.src)) || |
907 | fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, | |
aa72d708 | 908 | &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK, |
77b9900e JP |
909 | sizeof(key->tp.dst)))) |
910 | goto nla_put_failure; | |
911 | else if (key->basic.ip_proto == IPPROTO_UDP && | |
912 | (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, | |
aa72d708 | 913 | &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK, |
77b9900e JP |
914 | sizeof(key->tp.src)) || |
915 | fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, | |
aa72d708 | 916 | &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK, |
77b9900e JP |
917 | sizeof(key->tp.dst)))) |
918 | goto nla_put_failure; | |
919 | ||
bc3103f1 AV |
920 | if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && |
921 | (fl_dump_key_val(skb, &key->enc_ipv4.src, | |
922 | TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src, | |
923 | TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, | |
924 | sizeof(key->enc_ipv4.src)) || | |
925 | fl_dump_key_val(skb, &key->enc_ipv4.dst, | |
926 | TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst, | |
927 | TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, | |
928 | sizeof(key->enc_ipv4.dst)))) | |
929 | goto nla_put_failure; | |
930 | else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && | |
931 | (fl_dump_key_val(skb, &key->enc_ipv6.src, | |
932 | TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src, | |
933 | TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, | |
934 | sizeof(key->enc_ipv6.src)) || | |
935 | fl_dump_key_val(skb, &key->enc_ipv6.dst, | |
936 | TCA_FLOWER_KEY_ENC_IPV6_DST, | |
937 | &mask->enc_ipv6.dst, | |
938 | TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, | |
939 | sizeof(key->enc_ipv6.dst)))) | |
940 | goto nla_put_failure; | |
941 | ||
942 | if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID, | |
eb523f42 | 943 | &mask->enc_key_id, TCA_FLOWER_UNSPEC, |
bc3103f1 AV |
944 | sizeof(key->enc_key_id))) |
945 | goto nla_put_failure; | |
946 | ||
e69985c6 AV |
947 | nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags); |
948 | ||
77b9900e JP |
949 | if (tcf_exts_dump(skb, &f->exts)) |
950 | goto nla_put_failure; | |
951 | ||
952 | nla_nest_end(skb, nest); | |
953 | ||
954 | if (tcf_exts_dump_stats(skb, &f->exts) < 0) | |
955 | goto nla_put_failure; | |
956 | ||
957 | return skb->len; | |
958 | ||
959 | nla_put_failure: | |
960 | nla_nest_cancel(skb, nest); | |
961 | return -1; | |
962 | } | |
963 | ||
964 | static struct tcf_proto_ops cls_fl_ops __read_mostly = { | |
965 | .kind = "flower", | |
966 | .classify = fl_classify, | |
967 | .init = fl_init, | |
968 | .destroy = fl_destroy, | |
969 | .get = fl_get, | |
970 | .change = fl_change, | |
971 | .delete = fl_delete, | |
972 | .walk = fl_walk, | |
973 | .dump = fl_dump, | |
974 | .owner = THIS_MODULE, | |
975 | }; | |
976 | ||
977 | static int __init cls_fl_init(void) | |
978 | { | |
979 | return register_tcf_proto_ops(&cls_fl_ops); | |
980 | } | |
981 | ||
982 | static void __exit cls_fl_exit(void) | |
983 | { | |
984 | unregister_tcf_proto_ops(&cls_fl_ops); | |
985 | } | |
986 | ||
987 | module_init(cls_fl_init); | |
988 | module_exit(cls_fl_exit); | |
989 | ||
990 | MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); | |
991 | MODULE_DESCRIPTION("Flower classifier"); | |
992 | MODULE_LICENSE("GPL v2"); |