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> | |
16 | ||
17 | #include <linux/if_ether.h> | |
18 | #include <linux/in6.h> | |
19 | #include <linux/ip.h> | |
20 | ||
21 | #include <net/sch_generic.h> | |
22 | #include <net/pkt_cls.h> | |
23 | #include <net/ip.h> | |
24 | #include <net/flow_dissector.h> | |
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; |
c3f83241 | 36 | struct flow_dissector_key_addrs ipaddrs; |
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; | |
68 | struct rcu_head rcu; | |
69 | }; | |
70 | ||
71 | struct cls_fl_filter { | |
72 | struct rhash_head ht_node; | |
73 | struct fl_flow_key mkey; | |
74 | struct tcf_exts exts; | |
75 | struct tcf_result res; | |
76 | struct fl_flow_key key; | |
77 | struct list_head list; | |
78 | u32 handle; | |
e69985c6 | 79 | u32 flags; |
77b9900e JP |
80 | struct rcu_head rcu; |
81 | }; | |
82 | ||
83 | static unsigned short int fl_mask_range(const struct fl_flow_mask *mask) | |
84 | { | |
85 | return mask->range.end - mask->range.start; | |
86 | } | |
87 | ||
88 | static void fl_mask_update_range(struct fl_flow_mask *mask) | |
89 | { | |
90 | const u8 *bytes = (const u8 *) &mask->key; | |
91 | size_t size = sizeof(mask->key); | |
92 | size_t i, first = 0, last = size - 1; | |
93 | ||
94 | for (i = 0; i < sizeof(mask->key); i++) { | |
95 | if (bytes[i]) { | |
96 | if (!first && i) | |
97 | first = i; | |
98 | last = i; | |
99 | } | |
100 | } | |
101 | mask->range.start = rounddown(first, sizeof(long)); | |
102 | mask->range.end = roundup(last + 1, sizeof(long)); | |
103 | } | |
104 | ||
105 | static void *fl_key_get_start(struct fl_flow_key *key, | |
106 | const struct fl_flow_mask *mask) | |
107 | { | |
108 | return (u8 *) key + mask->range.start; | |
109 | } | |
110 | ||
111 | static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key, | |
112 | struct fl_flow_mask *mask) | |
113 | { | |
114 | const long *lkey = fl_key_get_start(key, mask); | |
115 | const long *lmask = fl_key_get_start(&mask->key, mask); | |
116 | long *lmkey = fl_key_get_start(mkey, mask); | |
117 | int i; | |
118 | ||
119 | for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) | |
120 | *lmkey++ = *lkey++ & *lmask++; | |
121 | } | |
122 | ||
123 | static void fl_clear_masked_range(struct fl_flow_key *key, | |
124 | struct fl_flow_mask *mask) | |
125 | { | |
126 | memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask)); | |
127 | } | |
128 | ||
129 | static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp, | |
130 | struct tcf_result *res) | |
131 | { | |
132 | struct cls_fl_head *head = rcu_dereference_bh(tp->root); | |
133 | struct cls_fl_filter *f; | |
134 | struct fl_flow_key skb_key; | |
135 | struct fl_flow_key skb_mkey; | |
bc3103f1 | 136 | struct ip_tunnel_info *info; |
77b9900e | 137 | |
e69985c6 AV |
138 | if (!atomic_read(&head->ht.nelems)) |
139 | return -1; | |
140 | ||
77b9900e | 141 | fl_clear_masked_range(&skb_key, &head->mask); |
bc3103f1 AV |
142 | |
143 | info = skb_tunnel_info(skb); | |
144 | if (info) { | |
145 | struct ip_tunnel_key *key = &info->key; | |
146 | ||
147 | switch (ip_tunnel_info_af(info)) { | |
148 | case AF_INET: | |
149 | skb_key.enc_ipv4.src = key->u.ipv4.src; | |
150 | skb_key.enc_ipv4.dst = key->u.ipv4.dst; | |
151 | break; | |
152 | case AF_INET6: | |
153 | skb_key.enc_ipv6.src = key->u.ipv6.src; | |
154 | skb_key.enc_ipv6.dst = key->u.ipv6.dst; | |
155 | break; | |
156 | } | |
157 | ||
158 | skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id); | |
159 | } | |
160 | ||
77b9900e JP |
161 | skb_key.indev_ifindex = skb->skb_iif; |
162 | /* skb_flow_dissect() does not set n_proto in case an unknown protocol, | |
163 | * so do it rather here. | |
164 | */ | |
165 | skb_key.basic.n_proto = skb->protocol; | |
cd79a238 | 166 | skb_flow_dissect(skb, &head->dissector, &skb_key, 0); |
77b9900e JP |
167 | |
168 | fl_set_masked_key(&skb_mkey, &skb_key, &head->mask); | |
169 | ||
170 | f = rhashtable_lookup_fast(&head->ht, | |
171 | fl_key_get_start(&skb_mkey, &head->mask), | |
172 | head->ht_params); | |
e8eb36cd | 173 | if (f && !tc_skip_sw(f->flags)) { |
77b9900e JP |
174 | *res = f->res; |
175 | return tcf_exts_exec(skb, &f->exts, res); | |
176 | } | |
177 | return -1; | |
178 | } | |
179 | ||
180 | static int fl_init(struct tcf_proto *tp) | |
181 | { | |
182 | struct cls_fl_head *head; | |
183 | ||
184 | head = kzalloc(sizeof(*head), GFP_KERNEL); | |
185 | if (!head) | |
186 | return -ENOBUFS; | |
187 | ||
188 | INIT_LIST_HEAD_RCU(&head->filters); | |
189 | rcu_assign_pointer(tp->root, head); | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static void fl_destroy_filter(struct rcu_head *head) | |
195 | { | |
196 | struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu); | |
197 | ||
198 | tcf_exts_destroy(&f->exts); | |
199 | kfree(f); | |
200 | } | |
201 | ||
8208d21b | 202 | static void fl_hw_destroy_filter(struct tcf_proto *tp, unsigned long cookie) |
5b33f488 AV |
203 | { |
204 | struct net_device *dev = tp->q->dev_queue->dev; | |
205 | struct tc_cls_flower_offload offload = {0}; | |
206 | struct tc_to_netdev tc; | |
207 | ||
92c075db | 208 | if (!tc_should_offload(dev, tp, 0)) |
5b33f488 AV |
209 | return; |
210 | ||
211 | offload.command = TC_CLSFLOWER_DESTROY; | |
212 | offload.cookie = cookie; | |
213 | ||
214 | tc.type = TC_SETUP_CLSFLOWER; | |
215 | tc.cls_flower = &offload; | |
216 | ||
217 | dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc); | |
218 | } | |
219 | ||
e8eb36cd AV |
220 | static int fl_hw_replace_filter(struct tcf_proto *tp, |
221 | struct flow_dissector *dissector, | |
222 | struct fl_flow_key *mask, | |
223 | struct fl_flow_key *key, | |
224 | struct tcf_exts *actions, | |
225 | unsigned long cookie, u32 flags) | |
5b33f488 AV |
226 | { |
227 | struct net_device *dev = tp->q->dev_queue->dev; | |
228 | struct tc_cls_flower_offload offload = {0}; | |
229 | struct tc_to_netdev tc; | |
e8eb36cd | 230 | int err; |
5b33f488 | 231 | |
92c075db | 232 | if (!tc_should_offload(dev, tp, flags)) |
e8eb36cd | 233 | return tc_skip_sw(flags) ? -EINVAL : 0; |
5b33f488 AV |
234 | |
235 | offload.command = TC_CLSFLOWER_REPLACE; | |
236 | offload.cookie = cookie; | |
237 | offload.dissector = dissector; | |
238 | offload.mask = mask; | |
239 | offload.key = key; | |
240 | offload.exts = actions; | |
241 | ||
242 | tc.type = TC_SETUP_CLSFLOWER; | |
243 | tc.cls_flower = &offload; | |
244 | ||
e8eb36cd AV |
245 | err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc); |
246 | ||
247 | if (tc_skip_sw(flags)) | |
248 | return err; | |
249 | ||
250 | return 0; | |
5b33f488 AV |
251 | } |
252 | ||
10cbc684 AV |
253 | static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f) |
254 | { | |
255 | struct net_device *dev = tp->q->dev_queue->dev; | |
256 | struct tc_cls_flower_offload offload = {0}; | |
257 | struct tc_to_netdev tc; | |
258 | ||
92c075db | 259 | if (!tc_should_offload(dev, tp, 0)) |
10cbc684 AV |
260 | return; |
261 | ||
262 | offload.command = TC_CLSFLOWER_STATS; | |
263 | offload.cookie = (unsigned long)f; | |
264 | offload.exts = &f->exts; | |
265 | ||
266 | tc.type = TC_SETUP_CLSFLOWER; | |
267 | tc.cls_flower = &offload; | |
268 | ||
269 | dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc); | |
270 | } | |
271 | ||
77b9900e JP |
272 | static bool fl_destroy(struct tcf_proto *tp, bool force) |
273 | { | |
274 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
275 | struct cls_fl_filter *f, *next; | |
276 | ||
277 | if (!force && !list_empty(&head->filters)) | |
278 | return false; | |
279 | ||
280 | list_for_each_entry_safe(f, next, &head->filters, list) { | |
8208d21b | 281 | fl_hw_destroy_filter(tp, (unsigned long)f); |
77b9900e JP |
282 | list_del_rcu(&f->list); |
283 | call_rcu(&f->rcu, fl_destroy_filter); | |
284 | } | |
285 | RCU_INIT_POINTER(tp->root, NULL); | |
286 | if (head->mask_assigned) | |
287 | rhashtable_destroy(&head->ht); | |
288 | kfree_rcu(head, rcu); | |
289 | return true; | |
290 | } | |
291 | ||
292 | static unsigned long fl_get(struct tcf_proto *tp, u32 handle) | |
293 | { | |
294 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
295 | struct cls_fl_filter *f; | |
296 | ||
297 | list_for_each_entry(f, &head->filters, list) | |
298 | if (f->handle == handle) | |
299 | return (unsigned long) f; | |
300 | return 0; | |
301 | } | |
302 | ||
303 | static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = { | |
304 | [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC }, | |
305 | [TCA_FLOWER_CLASSID] = { .type = NLA_U32 }, | |
306 | [TCA_FLOWER_INDEV] = { .type = NLA_STRING, | |
307 | .len = IFNAMSIZ }, | |
308 | [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN }, | |
309 | [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN }, | |
310 | [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN }, | |
311 | [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN }, | |
312 | [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 }, | |
313 | [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 }, | |
314 | [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 }, | |
315 | [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 }, | |
316 | [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 }, | |
317 | [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 }, | |
318 | [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, | |
319 | [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, | |
320 | [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
321 | [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, | |
322 | [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 }, | |
323 | [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 }, | |
b175c3a4 JHS |
324 | [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 }, |
325 | [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 }, | |
9399ae9a HHZ |
326 | [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 }, |
327 | [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 }, | |
328 | [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 }, | |
bc3103f1 AV |
329 | [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 }, |
330 | [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 }, | |
331 | [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 }, | |
332 | [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 }, | |
333 | [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 }, | |
334 | [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) }, | |
335 | [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) }, | |
336 | [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) }, | |
337 | [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) }, | |
77b9900e JP |
338 | }; |
339 | ||
340 | static void fl_set_key_val(struct nlattr **tb, | |
341 | void *val, int val_type, | |
342 | void *mask, int mask_type, int len) | |
343 | { | |
344 | if (!tb[val_type]) | |
345 | return; | |
346 | memcpy(val, nla_data(tb[val_type]), len); | |
347 | if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type]) | |
348 | memset(mask, 0xff, len); | |
349 | else | |
350 | memcpy(mask, nla_data(tb[mask_type]), len); | |
351 | } | |
352 | ||
9399ae9a HHZ |
353 | static void fl_set_key_vlan(struct nlattr **tb, |
354 | struct flow_dissector_key_vlan *key_val, | |
355 | struct flow_dissector_key_vlan *key_mask) | |
356 | { | |
357 | #define VLAN_PRIORITY_MASK 0x7 | |
358 | ||
359 | if (tb[TCA_FLOWER_KEY_VLAN_ID]) { | |
360 | key_val->vlan_id = | |
361 | nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK; | |
362 | key_mask->vlan_id = VLAN_VID_MASK; | |
363 | } | |
364 | if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) { | |
365 | key_val->vlan_priority = | |
366 | nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) & | |
367 | VLAN_PRIORITY_MASK; | |
368 | key_mask->vlan_priority = VLAN_PRIORITY_MASK; | |
369 | } | |
370 | } | |
371 | ||
77b9900e JP |
372 | static int fl_set_key(struct net *net, struct nlattr **tb, |
373 | struct fl_flow_key *key, struct fl_flow_key *mask) | |
374 | { | |
9399ae9a | 375 | __be16 ethertype; |
dd3aa3b5 | 376 | #ifdef CONFIG_NET_CLS_IND |
77b9900e | 377 | if (tb[TCA_FLOWER_INDEV]) { |
dd3aa3b5 | 378 | int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]); |
77b9900e JP |
379 | if (err < 0) |
380 | return err; | |
381 | key->indev_ifindex = err; | |
382 | mask->indev_ifindex = 0xffffffff; | |
383 | } | |
dd3aa3b5 | 384 | #endif |
77b9900e JP |
385 | |
386 | fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, | |
387 | mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, | |
388 | sizeof(key->eth.dst)); | |
389 | fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, | |
390 | mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, | |
391 | sizeof(key->eth.src)); | |
66530bdf | 392 | |
0b498a52 | 393 | if (tb[TCA_FLOWER_KEY_ETH_TYPE]) { |
9399ae9a HHZ |
394 | ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]); |
395 | ||
0b498a52 AB |
396 | if (ethertype == htons(ETH_P_8021Q)) { |
397 | fl_set_key_vlan(tb, &key->vlan, &mask->vlan); | |
398 | fl_set_key_val(tb, &key->basic.n_proto, | |
399 | TCA_FLOWER_KEY_VLAN_ETH_TYPE, | |
400 | &mask->basic.n_proto, TCA_FLOWER_UNSPEC, | |
401 | sizeof(key->basic.n_proto)); | |
402 | } else { | |
403 | key->basic.n_proto = ethertype; | |
404 | mask->basic.n_proto = cpu_to_be16(~0); | |
405 | } | |
9399ae9a | 406 | } |
66530bdf | 407 | |
77b9900e JP |
408 | if (key->basic.n_proto == htons(ETH_P_IP) || |
409 | key->basic.n_proto == htons(ETH_P_IPV6)) { | |
410 | fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, | |
411 | &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, | |
412 | sizeof(key->basic.ip_proto)); | |
413 | } | |
66530bdf JHS |
414 | |
415 | if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) { | |
416 | key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; | |
77b9900e JP |
417 | fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, |
418 | &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, | |
419 | sizeof(key->ipv4.src)); | |
420 | fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, | |
421 | &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, | |
422 | sizeof(key->ipv4.dst)); | |
66530bdf JHS |
423 | } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) { |
424 | key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; | |
77b9900e JP |
425 | fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, |
426 | &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, | |
427 | sizeof(key->ipv6.src)); | |
428 | fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, | |
429 | &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, | |
430 | sizeof(key->ipv6.dst)); | |
431 | } | |
66530bdf | 432 | |
77b9900e JP |
433 | if (key->basic.ip_proto == IPPROTO_TCP) { |
434 | fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, | |
435 | &mask->tp.src, TCA_FLOWER_UNSPEC, | |
436 | sizeof(key->tp.src)); | |
437 | fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, | |
438 | &mask->tp.dst, TCA_FLOWER_UNSPEC, | |
439 | sizeof(key->tp.dst)); | |
440 | } else if (key->basic.ip_proto == IPPROTO_UDP) { | |
441 | fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, | |
442 | &mask->tp.src, TCA_FLOWER_UNSPEC, | |
443 | sizeof(key->tp.src)); | |
444 | fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, | |
445 | &mask->tp.dst, TCA_FLOWER_UNSPEC, | |
446 | sizeof(key->tp.dst)); | |
447 | } | |
448 | ||
bc3103f1 AV |
449 | if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] || |
450 | tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) { | |
451 | key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; | |
452 | fl_set_key_val(tb, &key->enc_ipv4.src, | |
453 | TCA_FLOWER_KEY_ENC_IPV4_SRC, | |
454 | &mask->enc_ipv4.src, | |
455 | TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, | |
456 | sizeof(key->enc_ipv4.src)); | |
457 | fl_set_key_val(tb, &key->enc_ipv4.dst, | |
458 | TCA_FLOWER_KEY_ENC_IPV4_DST, | |
459 | &mask->enc_ipv4.dst, | |
460 | TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, | |
461 | sizeof(key->enc_ipv4.dst)); | |
462 | } | |
463 | ||
464 | if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] || | |
465 | tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) { | |
466 | key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; | |
467 | fl_set_key_val(tb, &key->enc_ipv6.src, | |
468 | TCA_FLOWER_KEY_ENC_IPV6_SRC, | |
469 | &mask->enc_ipv6.src, | |
470 | TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, | |
471 | sizeof(key->enc_ipv6.src)); | |
472 | fl_set_key_val(tb, &key->enc_ipv6.dst, | |
473 | TCA_FLOWER_KEY_ENC_IPV6_DST, | |
474 | &mask->enc_ipv6.dst, | |
475 | TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, | |
476 | sizeof(key->enc_ipv6.dst)); | |
477 | } | |
478 | ||
479 | fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID, | |
480 | &mask->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID, | |
481 | sizeof(key->enc_key_id.keyid)); | |
482 | ||
77b9900e JP |
483 | return 0; |
484 | } | |
485 | ||
486 | static bool fl_mask_eq(struct fl_flow_mask *mask1, | |
487 | struct fl_flow_mask *mask2) | |
488 | { | |
489 | const long *lmask1 = fl_key_get_start(&mask1->key, mask1); | |
490 | const long *lmask2 = fl_key_get_start(&mask2->key, mask2); | |
491 | ||
492 | return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) && | |
493 | !memcmp(lmask1, lmask2, fl_mask_range(mask1)); | |
494 | } | |
495 | ||
496 | static const struct rhashtable_params fl_ht_params = { | |
497 | .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */ | |
498 | .head_offset = offsetof(struct cls_fl_filter, ht_node), | |
499 | .automatic_shrinking = true, | |
500 | }; | |
501 | ||
502 | static int fl_init_hashtable(struct cls_fl_head *head, | |
503 | struct fl_flow_mask *mask) | |
504 | { | |
505 | head->ht_params = fl_ht_params; | |
506 | head->ht_params.key_len = fl_mask_range(mask); | |
507 | head->ht_params.key_offset += mask->range.start; | |
508 | ||
509 | return rhashtable_init(&head->ht, &head->ht_params); | |
510 | } | |
511 | ||
512 | #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member) | |
513 | #define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member)) | |
77b9900e | 514 | |
339ba878 HHZ |
515 | #define FL_KEY_IS_MASKED(mask, member) \ |
516 | memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \ | |
517 | 0, FL_KEY_MEMBER_SIZE(member)) \ | |
77b9900e JP |
518 | |
519 | #define FL_KEY_SET(keys, cnt, id, member) \ | |
520 | do { \ | |
521 | keys[cnt].key_id = id; \ | |
522 | keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \ | |
523 | cnt++; \ | |
524 | } while(0); | |
525 | ||
339ba878 | 526 | #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \ |
77b9900e | 527 | do { \ |
339ba878 | 528 | if (FL_KEY_IS_MASKED(mask, member)) \ |
77b9900e JP |
529 | FL_KEY_SET(keys, cnt, id, member); \ |
530 | } while(0); | |
531 | ||
532 | static void fl_init_dissector(struct cls_fl_head *head, | |
533 | struct fl_flow_mask *mask) | |
534 | { | |
535 | struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX]; | |
536 | size_t cnt = 0; | |
537 | ||
42aecaa9 | 538 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control); |
77b9900e | 539 | FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic); |
339ba878 HHZ |
540 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, |
541 | FLOW_DISSECTOR_KEY_ETH_ADDRS, eth); | |
542 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, | |
543 | FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4); | |
544 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, | |
545 | FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6); | |
546 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, | |
547 | FLOW_DISSECTOR_KEY_PORTS, tp); | |
9399ae9a HHZ |
548 | FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt, |
549 | FLOW_DISSECTOR_KEY_VLAN, vlan); | |
77b9900e JP |
550 | |
551 | skb_flow_dissector_init(&head->dissector, keys, cnt); | |
552 | } | |
553 | ||
554 | static int fl_check_assign_mask(struct cls_fl_head *head, | |
555 | struct fl_flow_mask *mask) | |
556 | { | |
557 | int err; | |
558 | ||
559 | if (head->mask_assigned) { | |
560 | if (!fl_mask_eq(&head->mask, mask)) | |
561 | return -EINVAL; | |
562 | else | |
563 | return 0; | |
564 | } | |
565 | ||
566 | /* Mask is not assigned yet. So assign it and init hashtable | |
567 | * according to that. | |
568 | */ | |
569 | err = fl_init_hashtable(head, mask); | |
570 | if (err) | |
571 | return err; | |
572 | memcpy(&head->mask, mask, sizeof(head->mask)); | |
573 | head->mask_assigned = true; | |
574 | ||
575 | fl_init_dissector(head, mask); | |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
580 | static int fl_set_parms(struct net *net, struct tcf_proto *tp, | |
581 | struct cls_fl_filter *f, struct fl_flow_mask *mask, | |
582 | unsigned long base, struct nlattr **tb, | |
583 | struct nlattr *est, bool ovr) | |
584 | { | |
585 | struct tcf_exts e; | |
586 | int err; | |
587 | ||
b9a24bb7 | 588 | err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0); |
77b9900e JP |
589 | if (err < 0) |
590 | return err; | |
b9a24bb7 WC |
591 | err = tcf_exts_validate(net, tp, tb, est, &e, ovr); |
592 | if (err < 0) | |
593 | goto errout; | |
77b9900e JP |
594 | |
595 | if (tb[TCA_FLOWER_CLASSID]) { | |
596 | f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]); | |
597 | tcf_bind_filter(tp, &f->res, base); | |
598 | } | |
599 | ||
600 | err = fl_set_key(net, tb, &f->key, &mask->key); | |
601 | if (err) | |
602 | goto errout; | |
603 | ||
604 | fl_mask_update_range(mask); | |
605 | fl_set_masked_key(&f->mkey, &f->key, mask); | |
606 | ||
607 | tcf_exts_change(tp, &f->exts, &e); | |
608 | ||
609 | return 0; | |
610 | errout: | |
611 | tcf_exts_destroy(&e); | |
612 | return err; | |
613 | } | |
614 | ||
615 | static u32 fl_grab_new_handle(struct tcf_proto *tp, | |
616 | struct cls_fl_head *head) | |
617 | { | |
618 | unsigned int i = 0x80000000; | |
619 | u32 handle; | |
620 | ||
621 | do { | |
622 | if (++head->hgen == 0x7FFFFFFF) | |
623 | head->hgen = 1; | |
624 | } while (--i > 0 && fl_get(tp, head->hgen)); | |
625 | ||
626 | if (unlikely(i == 0)) { | |
627 | pr_err("Insufficient number of handles\n"); | |
628 | handle = 0; | |
629 | } else { | |
630 | handle = head->hgen; | |
631 | } | |
632 | ||
633 | return handle; | |
634 | } | |
635 | ||
636 | static int fl_change(struct net *net, struct sk_buff *in_skb, | |
637 | struct tcf_proto *tp, unsigned long base, | |
638 | u32 handle, struct nlattr **tca, | |
639 | unsigned long *arg, bool ovr) | |
640 | { | |
641 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
642 | struct cls_fl_filter *fold = (struct cls_fl_filter *) *arg; | |
643 | struct cls_fl_filter *fnew; | |
644 | struct nlattr *tb[TCA_FLOWER_MAX + 1]; | |
645 | struct fl_flow_mask mask = {}; | |
646 | int err; | |
647 | ||
648 | if (!tca[TCA_OPTIONS]) | |
649 | return -EINVAL; | |
650 | ||
651 | err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy); | |
652 | if (err < 0) | |
653 | return err; | |
654 | ||
655 | if (fold && handle && fold->handle != handle) | |
656 | return -EINVAL; | |
657 | ||
658 | fnew = kzalloc(sizeof(*fnew), GFP_KERNEL); | |
659 | if (!fnew) | |
660 | return -ENOBUFS; | |
661 | ||
b9a24bb7 WC |
662 | err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0); |
663 | if (err < 0) | |
664 | goto errout; | |
77b9900e JP |
665 | |
666 | if (!handle) { | |
667 | handle = fl_grab_new_handle(tp, head); | |
668 | if (!handle) { | |
669 | err = -EINVAL; | |
670 | goto errout; | |
671 | } | |
672 | } | |
673 | fnew->handle = handle; | |
674 | ||
e69985c6 AV |
675 | if (tb[TCA_FLOWER_FLAGS]) { |
676 | fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]); | |
677 | ||
678 | if (!tc_flags_valid(fnew->flags)) { | |
679 | err = -EINVAL; | |
680 | goto errout; | |
681 | } | |
682 | } | |
5b33f488 | 683 | |
77b9900e JP |
684 | err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr); |
685 | if (err) | |
686 | goto errout; | |
687 | ||
688 | err = fl_check_assign_mask(head, &mask); | |
689 | if (err) | |
690 | goto errout; | |
691 | ||
e8eb36cd | 692 | if (!tc_skip_sw(fnew->flags)) { |
e69985c6 AV |
693 | err = rhashtable_insert_fast(&head->ht, &fnew->ht_node, |
694 | head->ht_params); | |
695 | if (err) | |
696 | goto errout; | |
697 | } | |
5b33f488 | 698 | |
e8eb36cd AV |
699 | err = fl_hw_replace_filter(tp, |
700 | &head->dissector, | |
701 | &mask.key, | |
702 | &fnew->key, | |
703 | &fnew->exts, | |
704 | (unsigned long)fnew, | |
705 | fnew->flags); | |
706 | if (err) | |
707 | goto errout; | |
5b33f488 AV |
708 | |
709 | if (fold) { | |
77b9900e JP |
710 | rhashtable_remove_fast(&head->ht, &fold->ht_node, |
711 | head->ht_params); | |
8208d21b | 712 | fl_hw_destroy_filter(tp, (unsigned long)fold); |
5b33f488 | 713 | } |
77b9900e JP |
714 | |
715 | *arg = (unsigned long) fnew; | |
716 | ||
717 | if (fold) { | |
ff3532f2 | 718 | list_replace_rcu(&fold->list, &fnew->list); |
77b9900e JP |
719 | tcf_unbind_filter(tp, &fold->res); |
720 | call_rcu(&fold->rcu, fl_destroy_filter); | |
721 | } else { | |
722 | list_add_tail_rcu(&fnew->list, &head->filters); | |
723 | } | |
724 | ||
725 | return 0; | |
726 | ||
727 | errout: | |
b9a24bb7 | 728 | tcf_exts_destroy(&fnew->exts); |
77b9900e JP |
729 | kfree(fnew); |
730 | return err; | |
731 | } | |
732 | ||
733 | static int fl_delete(struct tcf_proto *tp, unsigned long arg) | |
734 | { | |
735 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
736 | struct cls_fl_filter *f = (struct cls_fl_filter *) arg; | |
737 | ||
738 | rhashtable_remove_fast(&head->ht, &f->ht_node, | |
739 | head->ht_params); | |
740 | list_del_rcu(&f->list); | |
8208d21b | 741 | fl_hw_destroy_filter(tp, (unsigned long)f); |
77b9900e JP |
742 | tcf_unbind_filter(tp, &f->res); |
743 | call_rcu(&f->rcu, fl_destroy_filter); | |
744 | return 0; | |
745 | } | |
746 | ||
747 | static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg) | |
748 | { | |
749 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
750 | struct cls_fl_filter *f; | |
751 | ||
752 | list_for_each_entry_rcu(f, &head->filters, list) { | |
753 | if (arg->count < arg->skip) | |
754 | goto skip; | |
755 | if (arg->fn(tp, (unsigned long) f, arg) < 0) { | |
756 | arg->stop = 1; | |
757 | break; | |
758 | } | |
759 | skip: | |
760 | arg->count++; | |
761 | } | |
762 | } | |
763 | ||
764 | static int fl_dump_key_val(struct sk_buff *skb, | |
765 | void *val, int val_type, | |
766 | void *mask, int mask_type, int len) | |
767 | { | |
768 | int err; | |
769 | ||
770 | if (!memchr_inv(mask, 0, len)) | |
771 | return 0; | |
772 | err = nla_put(skb, val_type, len, val); | |
773 | if (err) | |
774 | return err; | |
775 | if (mask_type != TCA_FLOWER_UNSPEC) { | |
776 | err = nla_put(skb, mask_type, len, mask); | |
777 | if (err) | |
778 | return err; | |
779 | } | |
780 | return 0; | |
781 | } | |
782 | ||
9399ae9a HHZ |
783 | static int fl_dump_key_vlan(struct sk_buff *skb, |
784 | struct flow_dissector_key_vlan *vlan_key, | |
785 | struct flow_dissector_key_vlan *vlan_mask) | |
786 | { | |
787 | int err; | |
788 | ||
789 | if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask))) | |
790 | return 0; | |
791 | if (vlan_mask->vlan_id) { | |
792 | err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID, | |
793 | vlan_key->vlan_id); | |
794 | if (err) | |
795 | return err; | |
796 | } | |
797 | if (vlan_mask->vlan_priority) { | |
798 | err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO, | |
799 | vlan_key->vlan_priority); | |
800 | if (err) | |
801 | return err; | |
802 | } | |
803 | return 0; | |
804 | } | |
805 | ||
77b9900e JP |
806 | static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh, |
807 | struct sk_buff *skb, struct tcmsg *t) | |
808 | { | |
809 | struct cls_fl_head *head = rtnl_dereference(tp->root); | |
810 | struct cls_fl_filter *f = (struct cls_fl_filter *) fh; | |
811 | struct nlattr *nest; | |
812 | struct fl_flow_key *key, *mask; | |
813 | ||
814 | if (!f) | |
815 | return skb->len; | |
816 | ||
817 | t->tcm_handle = f->handle; | |
818 | ||
819 | nest = nla_nest_start(skb, TCA_OPTIONS); | |
820 | if (!nest) | |
821 | goto nla_put_failure; | |
822 | ||
823 | if (f->res.classid && | |
824 | nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid)) | |
825 | goto nla_put_failure; | |
826 | ||
827 | key = &f->key; | |
828 | mask = &head->mask.key; | |
829 | ||
830 | if (mask->indev_ifindex) { | |
831 | struct net_device *dev; | |
832 | ||
833 | dev = __dev_get_by_index(net, key->indev_ifindex); | |
834 | if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name)) | |
835 | goto nla_put_failure; | |
836 | } | |
837 | ||
10cbc684 AV |
838 | fl_hw_update_stats(tp, f); |
839 | ||
77b9900e JP |
840 | if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST, |
841 | mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK, | |
842 | sizeof(key->eth.dst)) || | |
843 | fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC, | |
844 | mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, | |
845 | sizeof(key->eth.src)) || | |
846 | fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE, | |
847 | &mask->basic.n_proto, TCA_FLOWER_UNSPEC, | |
848 | sizeof(key->basic.n_proto))) | |
849 | goto nla_put_failure; | |
9399ae9a HHZ |
850 | |
851 | if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan)) | |
852 | goto nla_put_failure; | |
853 | ||
77b9900e JP |
854 | if ((key->basic.n_proto == htons(ETH_P_IP) || |
855 | key->basic.n_proto == htons(ETH_P_IPV6)) && | |
856 | fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO, | |
857 | &mask->basic.ip_proto, TCA_FLOWER_UNSPEC, | |
858 | sizeof(key->basic.ip_proto))) | |
859 | goto nla_put_failure; | |
860 | ||
c3f83241 | 861 | if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && |
77b9900e JP |
862 | (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC, |
863 | &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK, | |
864 | sizeof(key->ipv4.src)) || | |
865 | fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST, | |
866 | &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK, | |
867 | sizeof(key->ipv4.dst)))) | |
868 | goto nla_put_failure; | |
c3f83241 | 869 | else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && |
77b9900e JP |
870 | (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC, |
871 | &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK, | |
872 | sizeof(key->ipv6.src)) || | |
873 | fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST, | |
874 | &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK, | |
875 | sizeof(key->ipv6.dst)))) | |
876 | goto nla_put_failure; | |
877 | ||
878 | if (key->basic.ip_proto == IPPROTO_TCP && | |
879 | (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC, | |
880 | &mask->tp.src, TCA_FLOWER_UNSPEC, | |
881 | sizeof(key->tp.src)) || | |
882 | fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST, | |
883 | &mask->tp.dst, TCA_FLOWER_UNSPEC, | |
884 | sizeof(key->tp.dst)))) | |
885 | goto nla_put_failure; | |
886 | else if (key->basic.ip_proto == IPPROTO_UDP && | |
887 | (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC, | |
888 | &mask->tp.src, TCA_FLOWER_UNSPEC, | |
889 | sizeof(key->tp.src)) || | |
890 | fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST, | |
891 | &mask->tp.dst, TCA_FLOWER_UNSPEC, | |
892 | sizeof(key->tp.dst)))) | |
893 | goto nla_put_failure; | |
894 | ||
bc3103f1 AV |
895 | if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS && |
896 | (fl_dump_key_val(skb, &key->enc_ipv4.src, | |
897 | TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src, | |
898 | TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK, | |
899 | sizeof(key->enc_ipv4.src)) || | |
900 | fl_dump_key_val(skb, &key->enc_ipv4.dst, | |
901 | TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst, | |
902 | TCA_FLOWER_KEY_ENC_IPV4_DST_MASK, | |
903 | sizeof(key->enc_ipv4.dst)))) | |
904 | goto nla_put_failure; | |
905 | else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS && | |
906 | (fl_dump_key_val(skb, &key->enc_ipv6.src, | |
907 | TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src, | |
908 | TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK, | |
909 | sizeof(key->enc_ipv6.src)) || | |
910 | fl_dump_key_val(skb, &key->enc_ipv6.dst, | |
911 | TCA_FLOWER_KEY_ENC_IPV6_DST, | |
912 | &mask->enc_ipv6.dst, | |
913 | TCA_FLOWER_KEY_ENC_IPV6_DST_MASK, | |
914 | sizeof(key->enc_ipv6.dst)))) | |
915 | goto nla_put_failure; | |
916 | ||
917 | if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID, | |
918 | &mask->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID, | |
919 | sizeof(key->enc_key_id))) | |
920 | goto nla_put_failure; | |
921 | ||
e69985c6 AV |
922 | nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags); |
923 | ||
77b9900e JP |
924 | if (tcf_exts_dump(skb, &f->exts)) |
925 | goto nla_put_failure; | |
926 | ||
927 | nla_nest_end(skb, nest); | |
928 | ||
929 | if (tcf_exts_dump_stats(skb, &f->exts) < 0) | |
930 | goto nla_put_failure; | |
931 | ||
932 | return skb->len; | |
933 | ||
934 | nla_put_failure: | |
935 | nla_nest_cancel(skb, nest); | |
936 | return -1; | |
937 | } | |
938 | ||
939 | static struct tcf_proto_ops cls_fl_ops __read_mostly = { | |
940 | .kind = "flower", | |
941 | .classify = fl_classify, | |
942 | .init = fl_init, | |
943 | .destroy = fl_destroy, | |
944 | .get = fl_get, | |
945 | .change = fl_change, | |
946 | .delete = fl_delete, | |
947 | .walk = fl_walk, | |
948 | .dump = fl_dump, | |
949 | .owner = THIS_MODULE, | |
950 | }; | |
951 | ||
952 | static int __init cls_fl_init(void) | |
953 | { | |
954 | return register_tcf_proto_ops(&cls_fl_ops); | |
955 | } | |
956 | ||
957 | static void __exit cls_fl_exit(void) | |
958 | { | |
959 | unregister_tcf_proto_ops(&cls_fl_ops); | |
960 | } | |
961 | ||
962 | module_init(cls_fl_init); | |
963 | module_exit(cls_fl_exit); | |
964 | ||
965 | MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>"); | |
966 | MODULE_DESCRIPTION("Flower classifier"); | |
967 | MODULE_LICENSE("GPL v2"); |