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net: sched: remove classid and q fields from tcf_proto
[mirror_ubuntu-hirsute-kernel.git] / net / sched / cls_flower.c
CommitLineData
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>
a577d8f7 21#include <linux/mpls.h>
77b9900e
JP		 22
23#include <net/sch_generic.h>
24#include <net/pkt_cls.h>
25#include <net/ip.h>
26#include <net/flow_dissector.h>
27
bc3103f1
AV		 28#include <net/dst.h>
29#include <net/dst_metadata.h>
30
77b9900e
JP		 31struct fl_flow_key {
32 int indev_ifindex;
42aecaa9 33 struct flow_dissector_key_control control;
bc3103f1 34 struct flow_dissector_key_control enc_control;
77b9900e
JP		 35 struct flow_dissector_key_basic basic;
36 struct flow_dissector_key_eth_addrs eth;
9399ae9a 37 struct flow_dissector_key_vlan vlan;
77b9900e 38 union {
c3f83241 39 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 40 struct flow_dissector_key_ipv6_addrs ipv6;
41 };
42 struct flow_dissector_key_ports tp;
7b684884 43 struct flow_dissector_key_icmp icmp;
99d31326 44 struct flow_dissector_key_arp arp;
bc3103f1
AV		 45 struct flow_dissector_key_keyid enc_key_id;
46 union {
47 struct flow_dissector_key_ipv4_addrs enc_ipv4;
48 struct flow_dissector_key_ipv6_addrs enc_ipv6;
49 };
f4d997fd 50 struct flow_dissector_key_ports enc_tp;
a577d8f7 51 struct flow_dissector_key_mpls mpls;
fdfc7dd6 52 struct flow_dissector_key_tcp tcp;
4d80cc0a 53 struct flow_dissector_key_ip ip;
77b9900e
JP		 54} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
55
56struct fl_flow_mask_range {
57 unsigned short int start;
58 unsigned short int end;
59};
60
61struct fl_flow_mask {
62 struct fl_flow_key key;
63 struct fl_flow_mask_range range;
64 struct rcu_head rcu;
65};
66
67struct cls_fl_head {
68 struct rhashtable ht;
69 struct fl_flow_mask mask;
70 struct flow_dissector dissector;
77b9900e
JP		 71 bool mask_assigned;
72 struct list_head filters;
73 struct rhashtable_params ht_params;
d9363774
DB		 74 union {
75 struct work_struct work;
76 struct rcu_head rcu;
77 };
c15ab236 78 struct idr handle_idr;
77b9900e
JP		 79};
80
81struct cls_fl_filter {
82 struct rhash_head ht_node;
83 struct fl_flow_key mkey;
84 struct tcf_exts exts;
85 struct tcf_result res;
86 struct fl_flow_key key;
87 struct list_head list;
88 u32 handle;
e69985c6 89 u32 flags;
0552c8af
CW		 90 union {
91 struct work_struct work;
92 struct rcu_head rcu;
93 };
7091d8c7 94 struct net_device *hw_dev;
77b9900e
JP		 95};
96
97static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
98{
99 return mask->range.end - mask->range.start;
100}
101
102static void fl_mask_update_range(struct fl_flow_mask *mask)
103{
104 const u8 *bytes = (const u8 *) &mask->key;
105 size_t size = sizeof(mask->key);
106 size_t i, first = 0, last = size - 1;
107
108 for (i = 0; i < sizeof(mask->key); i++) {
109 if (bytes[i]) {
110 if (!first && i)
111 first = i;
112 last = i;
113 }
114 }
115 mask->range.start = rounddown(first, sizeof(long));
116 mask->range.end = roundup(last + 1, sizeof(long));
117}
118
119static void *fl_key_get_start(struct fl_flow_key *key,
120 const struct fl_flow_mask *mask)
121{
122 return (u8 *) key + mask->range.start;
123}
124
125static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
126 struct fl_flow_mask *mask)
127{
128 const long *lkey = fl_key_get_start(key, mask);
129 const long *lmask = fl_key_get_start(&mask->key, mask);
130 long *lmkey = fl_key_get_start(mkey, mask);
131 int i;
132
133 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
134 *lmkey++ = *lkey++ & *lmask++;
135}
136
137static void fl_clear_masked_range(struct fl_flow_key *key,
138 struct fl_flow_mask *mask)
139{
140 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
141}
142
a3308d8f
PB		 143static struct cls_fl_filter *fl_lookup(struct cls_fl_head *head,
144 struct fl_flow_key *mkey)
145{
146 return rhashtable_lookup_fast(&head->ht,
147 fl_key_get_start(mkey, &head->mask),
148 head->ht_params);
149}
150
77b9900e
JP		 151static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
152 struct tcf_result *res)
153{
154 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
155 struct cls_fl_filter *f;
156 struct fl_flow_key skb_key;
157 struct fl_flow_key skb_mkey;
158
e69985c6
AV		 159 if (!atomic_read(&head->ht.nelems))
160 return -1;
161
77b9900e 162 fl_clear_masked_range(&skb_key, &head->mask);
bc3103f1 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;
62b32379 169 skb_flow_dissect_tunnel_info(skb, &head->dissector, &skb_key);
cd79a238 170 skb_flow_dissect(skb, &head->dissector, &skb_key, 0);
77b9900e
JP		 171
172 fl_set_masked_key(&skb_mkey, &skb_key, &head->mask);
173
a3308d8f 174 f = fl_lookup(head, &skb_mkey);
e8eb36cd 175 if (f && !tc_skip_sw(f->flags)) {
77b9900e
JP		 176 *res = f->res;
177 return tcf_exts_exec(skb, &f->exts, res);
178 }
179 return -1;
180}
181
182static int fl_init(struct tcf_proto *tp)
183{
184 struct cls_fl_head *head;
185
186 head = kzalloc(sizeof(*head), GFP_KERNEL);
187 if (!head)
188 return -ENOBUFS;
189
190 INIT_LIST_HEAD_RCU(&head->filters);
191 rcu_assign_pointer(tp->root, head);
c15ab236 192 idr_init(&head->handle_idr);
77b9900e
JP		 193
194 return 0;
195}
196
0dadc117
CW		 197static void __fl_destroy_filter(struct cls_fl_filter *f)
198{
199 tcf_exts_destroy(&f->exts);
200 tcf_exts_put_net(&f->exts);
201 kfree(f);
202}
203
0552c8af 204static void fl_destroy_filter_work(struct work_struct *work)
77b9900e 205{
0552c8af 206 struct cls_fl_filter *f = container_of(work, struct cls_fl_filter, work);
77b9900e 207
0552c8af 208 rtnl_lock();
0dadc117 209 __fl_destroy_filter(f);
0552c8af
CW		 210 rtnl_unlock();
211}
212
213static void fl_destroy_filter(struct rcu_head *head)
214{
215 struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu);
216
217 INIT_WORK(&f->work, fl_destroy_filter_work);
218 tcf_queue_work(&f->work);
77b9900e
JP		 219}
220
3036dab6 221static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
5b33f488 222{
de4784ca 223 struct tc_cls_flower_offload cls_flower = {};
208c0f4b 224 struct tcf_block *block = tp->chain->block;
5b33f488 225
de4784ca
JP		 226 tc_cls_common_offload_init(&cls_flower.common, tp);
227 cls_flower.command = TC_CLSFLOWER_DESTROY;
228 cls_flower.cookie = (unsigned long) f;
5b33f488 229
208c0f4b 230 tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
717503b9 231 &cls_flower, false);
5b33f488
AV		 232}
233
e8eb36cd
AV		 234static int fl_hw_replace_filter(struct tcf_proto *tp,
235 struct flow_dissector *dissector,
236 struct fl_flow_key *mask,
3036dab6 237 struct cls_fl_filter *f)
5b33f488 238{
de4784ca 239 struct tc_cls_flower_offload cls_flower = {};
208c0f4b 240 struct tcf_block *block = tp->chain->block;
717503b9 241 bool skip_sw = tc_skip_sw(f->flags);
e8eb36cd 242 int err;
5b33f488 243
de4784ca
JP		 244 tc_cls_common_offload_init(&cls_flower.common, tp);
245 cls_flower.command = TC_CLSFLOWER_REPLACE;
246 cls_flower.cookie = (unsigned long) f;
247 cls_flower.dissector = dissector;
248 cls_flower.mask = mask;
249 cls_flower.key = &f->mkey;
250 cls_flower.exts = &f->exts;
384c181e 251 cls_flower.classid = f->res.classid;
5b33f488 252
208c0f4b 253 err = tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
717503b9
JP		 254 &cls_flower, skip_sw);
255 if (err < 0) {
256 fl_hw_destroy_filter(tp, f);
e8eb36cd 257 return err;
717503b9
JP		 258 } else if (err > 0) {
259 f->flags |= TCA_CLS_FLAGS_IN_HW;
260 }
261
262 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
263 return -EINVAL;
264
e8eb36cd 265 return 0;
5b33f488
AV		 266}
267
10cbc684
AV		 268static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
269{
de4784ca 270 struct tc_cls_flower_offload cls_flower = {};
208c0f4b 271 struct tcf_block *block = tp->chain->block;
10cbc684 272
de4784ca
JP		 273 tc_cls_common_offload_init(&cls_flower.common, tp);
274 cls_flower.command = TC_CLSFLOWER_STATS;
275 cls_flower.cookie = (unsigned long) f;
276 cls_flower.exts = &f->exts;
384c181e 277 cls_flower.classid = f->res.classid;
10cbc684 278
208c0f4b 279 tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
717503b9 280 &cls_flower, false);
10cbc684
AV		 281}
282
13fa876e
RD		 283static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
284{
c15ab236
CM		 285 struct cls_fl_head *head = rtnl_dereference(tp->root);
286
287 idr_remove_ext(&head->handle_idr, f->handle);
13fa876e 288 list_del_rcu(&f->list);
79685219 289 if (!tc_skip_hw(f->flags))
3036dab6 290 fl_hw_destroy_filter(tp, f);
13fa876e 291 tcf_unbind_filter(tp, &f->res);
0dadc117
CW		 292 if (tcf_exts_get_net(&f->exts))
293 call_rcu(&f->rcu, fl_destroy_filter);
294 else
295 __fl_destroy_filter(f);
13fa876e
RD		 296}
297
d9363774
DB		 298static void fl_destroy_sleepable(struct work_struct *work)
299{
300 struct cls_fl_head *head = container_of(work, struct cls_fl_head,
301 work);
302 if (head->mask_assigned)
303 rhashtable_destroy(&head->ht);
304 kfree(head);
305 module_put(THIS_MODULE);
306}
307
308static void fl_destroy_rcu(struct rcu_head *rcu)
309{
310 struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu);
311
312 INIT_WORK(&head->work, fl_destroy_sleepable);
313 schedule_work(&head->work);
314}
315
763dbf63 316static void fl_destroy(struct tcf_proto *tp)
77b9900e
JP		 317{
318 struct cls_fl_head *head = rtnl_dereference(tp->root);
319 struct cls_fl_filter *f, *next;
320
13fa876e
RD		 321 list_for_each_entry_safe(f, next, &head->filters, list)
322 __fl_delete(tp, f);
c15ab236 323 idr_destroy(&head->handle_idr);
d9363774
DB		 324
325 __module_get(THIS_MODULE);
326 call_rcu(&head->rcu, fl_destroy_rcu);
77b9900e
JP		 327}
328
8113c095 329static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e
JP		 330{
331 struct cls_fl_head *head = rtnl_dereference(tp->root);
77b9900e 332
c15ab236 333 return idr_find_ext(&head->handle_idr, handle);
77b9900e
JP		 334}
335
336static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
337 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
338 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
339 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
340 .len = IFNAMSIZ },
341 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
342 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
343 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
344 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
345 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
346 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
347 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
348 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
349 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
350 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
351 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
352 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
353 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
354 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
355 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
356 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 357 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
358 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 359 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
360 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
361 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 362 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
363 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
364 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
365 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
366 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
367 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
368 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
369 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
370 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 371 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
372 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
373 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
374 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 375 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
376 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
377 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
378 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 379 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
380 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
381 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
382 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 383 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
384 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 385 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
386 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
387 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
388 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
389 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
390 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
391 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
392 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 393 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
394 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
395 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
396 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
397 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
398 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
399 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
400 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
401 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
402 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 403 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
404 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
405 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
406 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
fdfc7dd6
JP		 407 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
408 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 409 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
410 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
411 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
412 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
77b9900e
JP		 413};
414
415static void fl_set_key_val(struct nlattr **tb,
416 void *val, int val_type,
417 void *mask, int mask_type, int len)
418{
419 if (!tb[val_type])
420 return;
421 memcpy(val, nla_data(tb[val_type]), len);
422 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
423 memset(mask, 0xff, len);
424 else
425 memcpy(mask, nla_data(tb[mask_type]), len);
426}
427
1a7fca63
BL		 428static int fl_set_key_mpls(struct nlattr **tb,
429 struct flow_dissector_key_mpls *key_val,
430 struct flow_dissector_key_mpls *key_mask)
a577d8f7
BL		 431{
432 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
433 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
434 key_mask->mpls_ttl = MPLS_TTL_MASK;
435 }
436 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 437 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
438
439 if (bos & ~MPLS_BOS_MASK)
440 return -EINVAL;
441 key_val->mpls_bos = bos;
a577d8f7
BL		 442 key_mask->mpls_bos = MPLS_BOS_MASK;
443 }
444 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 445 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
446
447 if (tc & ~MPLS_TC_MASK)
448 return -EINVAL;
449 key_val->mpls_tc = tc;
a577d8f7
BL		 450 key_mask->mpls_tc = MPLS_TC_MASK;
451 }
452 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 453 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
454
455 if (label & ~MPLS_LABEL_MASK)
456 return -EINVAL;
457 key_val->mpls_label = label;
a577d8f7
BL		 458 key_mask->mpls_label = MPLS_LABEL_MASK;
459 }
1a7fca63 460 return 0;
a577d8f7
BL		 461}
462
9399ae9a
HHZ		 463static void fl_set_key_vlan(struct nlattr **tb,
464 struct flow_dissector_key_vlan *key_val,
465 struct flow_dissector_key_vlan *key_mask)
466{
467#define VLAN_PRIORITY_MASK 0x7
468
469 if (tb[TCA_FLOWER_KEY_VLAN_ID]) {
470 key_val->vlan_id =
471 nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK;
472 key_mask->vlan_id = VLAN_VID_MASK;
473 }
474 if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) {
475 key_val->vlan_priority =
476 nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) &
477 VLAN_PRIORITY_MASK;
478 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
479 }
480}
481
faa3ffce
OG		 482static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
483 u32 *dissector_key, u32 *dissector_mask,
484 u32 flower_flag_bit, u32 dissector_flag_bit)
485{
486 if (flower_mask & flower_flag_bit) {
487 *dissector_mask |= dissector_flag_bit;
488 if (flower_key & flower_flag_bit)
489 *dissector_key |= dissector_flag_bit;
490 }
491}
492
d9724772
OG		 493static int fl_set_key_flags(struct nlattr **tb,
494 u32 *flags_key, u32 *flags_mask)
faa3ffce
OG		 495{
496 u32 key, mask;
497
d9724772
OG		 498 /* mask is mandatory for flags */
499 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
500 return -EINVAL;
faa3ffce
OG		 501
502 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 503 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 504
505 *flags_key = 0;
506 *flags_mask = 0;
507
508 fl_set_key_flag(key, mask, flags_key, flags_mask,
509 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
d9724772
OG		 510
511 return 0;
faa3ffce
OG		 512}
513
4d80cc0a
OG		 514static void fl_set_key_ip(struct nlattr **tb,
515 struct flow_dissector_key_ip *key,
516 struct flow_dissector_key_ip *mask)
517{
518 fl_set_key_val(tb, &key->tos, TCA_FLOWER_KEY_IP_TOS,
519 &mask->tos, TCA_FLOWER_KEY_IP_TOS_MASK,
520 sizeof(key->tos));
521
522 fl_set_key_val(tb, &key->ttl, TCA_FLOWER_KEY_IP_TTL,
523 &mask->ttl, TCA_FLOWER_KEY_IP_TTL_MASK,
524 sizeof(key->ttl));
525}
526
77b9900e
JP		 527static int fl_set_key(struct net *net, struct nlattr **tb,
528 struct fl_flow_key *key, struct fl_flow_key *mask)
529{
9399ae9a 530 __be16 ethertype;
d9724772 531 int ret = 0;
dd3aa3b5 532#ifdef CONFIG_NET_CLS_IND
77b9900e 533 if (tb[TCA_FLOWER_INDEV]) {
dd3aa3b5 534 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]);
77b9900e
JP		 535 if (err < 0)
536 return err;
537 key->indev_ifindex = err;
538 mask->indev_ifindex = 0xffffffff;
539 }
dd3aa3b5 540#endif
77b9900e
JP		 541
542 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
543 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
544 sizeof(key->eth.dst));
545 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
546 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
547 sizeof(key->eth.src));
66530bdf 548
0b498a52 549 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 550 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
551
0b498a52
AB		 552 if (ethertype == htons(ETH_P_8021Q)) {
553 fl_set_key_vlan(tb, &key->vlan, &mask->vlan);
554 fl_set_key_val(tb, &key->basic.n_proto,
555 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
556 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
557 sizeof(key->basic.n_proto));
558 } else {
559 key->basic.n_proto = ethertype;
560 mask->basic.n_proto = cpu_to_be16(~0);
561 }
9399ae9a 562 }
66530bdf 563
77b9900e
JP		 564 if (key->basic.n_proto == htons(ETH_P_IP) ||
565 key->basic.n_proto == htons(ETH_P_IPV6)) {
566 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
567 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
568 sizeof(key->basic.ip_proto));
4d80cc0a 569 fl_set_key_ip(tb, &key->ip, &mask->ip);
77b9900e 570 }
66530bdf
JHS		 571
572 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
573 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 574 mask->control.addr_type = ~0;
77b9900e
JP		 575 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
576 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
577 sizeof(key->ipv4.src));
578 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
579 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
580 sizeof(key->ipv4.dst));
66530bdf
JHS		 581 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
582 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 583 mask->control.addr_type = ~0;
77b9900e
JP		 584 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
585 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
586 sizeof(key->ipv6.src));
587 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
588 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
589 sizeof(key->ipv6.dst));
590 }
66530bdf 591
77b9900e
JP		 592 if (key->basic.ip_proto == IPPROTO_TCP) {
593 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 594 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 595 sizeof(key->tp.src));
596 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 597 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 598 sizeof(key->tp.dst));
fdfc7dd6
JP		 599 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
600 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
601 sizeof(key->tcp.flags));
77b9900e
JP		 602 } else if (key->basic.ip_proto == IPPROTO_UDP) {
603 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 604 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 605 sizeof(key->tp.src));
606 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 607 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 608 sizeof(key->tp.dst));
5976c5f4
SH		 609 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
610 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
611 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
612 sizeof(key->tp.src));
613 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
614 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
615 sizeof(key->tp.dst));
7b684884
SH		 616 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
617 key->basic.ip_proto == IPPROTO_ICMP) {
618 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
619 &mask->icmp.type,
620 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
621 sizeof(key->icmp.type));
622 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
623 &mask->icmp.code,
624 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
625 sizeof(key->icmp.code));
626 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
627 key->basic.ip_proto == IPPROTO_ICMPV6) {
628 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
629 &mask->icmp.type,
630 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
631 sizeof(key->icmp.type));
040587af 632 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 633 &mask->icmp.code,
040587af 634 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 635 sizeof(key->icmp.code));
a577d8f7
BL		 636 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
637 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1a7fca63
BL		 638 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
639 if (ret)
640 return ret;
99d31326
SH		 641 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
642 key->basic.n_proto == htons(ETH_P_RARP)) {
643 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
644 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
645 sizeof(key->arp.sip));
646 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
647 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
648 sizeof(key->arp.tip));
649 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
650 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
651 sizeof(key->arp.op));
652 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
653 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
654 sizeof(key->arp.sha));
655 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
656 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
657 sizeof(key->arp.tha));
77b9900e
JP		 658 }
659
bc3103f1
AV		 660 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
661 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
662 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 663 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 664 fl_set_key_val(tb, &key->enc_ipv4.src,
665 TCA_FLOWER_KEY_ENC_IPV4_SRC,
666 &mask->enc_ipv4.src,
667 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
668 sizeof(key->enc_ipv4.src));
669 fl_set_key_val(tb, &key->enc_ipv4.dst,
670 TCA_FLOWER_KEY_ENC_IPV4_DST,
671 &mask->enc_ipv4.dst,
672 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
673 sizeof(key->enc_ipv4.dst));
674 }
675
676 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
677 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
678 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 679 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 680 fl_set_key_val(tb, &key->enc_ipv6.src,
681 TCA_FLOWER_KEY_ENC_IPV6_SRC,
682 &mask->enc_ipv6.src,
683 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
684 sizeof(key->enc_ipv6.src));
685 fl_set_key_val(tb, &key->enc_ipv6.dst,
686 TCA_FLOWER_KEY_ENC_IPV6_DST,
687 &mask->enc_ipv6.dst,
688 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
689 sizeof(key->enc_ipv6.dst));
690 }
691
692 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 693 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 694 sizeof(key->enc_key_id.keyid));
695
f4d997fd
HHZ		 696 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
697 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
698 sizeof(key->enc_tp.src));
699
700 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
701 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
702 sizeof(key->enc_tp.dst));
703
d9724772
OG		 704 if (tb[TCA_FLOWER_KEY_FLAGS])
705 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
faa3ffce 706
d9724772 707 return ret;
77b9900e
JP		 708}
709
710static bool fl_mask_eq(struct fl_flow_mask *mask1,
711 struct fl_flow_mask *mask2)
712{
713 const long *lmask1 = fl_key_get_start(&mask1->key, mask1);
714 const long *lmask2 = fl_key_get_start(&mask2->key, mask2);
715
716 return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) &&
717 !memcmp(lmask1, lmask2, fl_mask_range(mask1));
718}
719
720static const struct rhashtable_params fl_ht_params = {
721 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
722 .head_offset = offsetof(struct cls_fl_filter, ht_node),
723 .automatic_shrinking = true,
724};
725
726static int fl_init_hashtable(struct cls_fl_head *head,
727 struct fl_flow_mask *mask)
728{
729 head->ht_params = fl_ht_params;
730 head->ht_params.key_len = fl_mask_range(mask);
731 head->ht_params.key_offset += mask->range.start;
732
733 return rhashtable_init(&head->ht, &head->ht_params);
734}
735
736#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
737#define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
77b9900e 738
339ba878
HHZ		 739#define FL_KEY_IS_MASKED(mask, member) \
740 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
741 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 742
743#define FL_KEY_SET(keys, cnt, id, member) \
744 do { \
745 keys[cnt].key_id = id; \
746 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
747 cnt++; \
748 } while(0);
749
339ba878 750#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 751 do { \
339ba878 752 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 753 FL_KEY_SET(keys, cnt, id, member); \
754 } while(0);
755
756static void fl_init_dissector(struct cls_fl_head *head,
757 struct fl_flow_mask *mask)
758{
759 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
760 size_t cnt = 0;
761
42aecaa9 762 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 763 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
339ba878
HHZ		 764 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
765 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
766 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
767 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
768 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
769 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
770 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
771 FLOW_DISSECTOR_KEY_PORTS, tp);
4d80cc0a
OG		 772 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
773 FLOW_DISSECTOR_KEY_IP, ip);
fdfc7dd6
JP		 774 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
775 FLOW_DISSECTOR_KEY_TCP, tcp);
7b684884
SH		 776 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
777 FLOW_DISSECTOR_KEY_ICMP, icmp);
99d31326
SH		 778 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
779 FLOW_DISSECTOR_KEY_ARP, arp);
a577d8f7
BL		 780 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
781 FLOW_DISSECTOR_KEY_MPLS, mpls);
9399ae9a
HHZ		 782 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
783 FLOW_DISSECTOR_KEY_VLAN, vlan);
519d1052
HHZ		 784 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
785 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
786 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
787 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
788 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
789 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
790 if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) ||
791 FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
792 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
793 enc_control);
f4d997fd
HHZ		 794 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
795 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
77b9900e
JP		 796
797 skb_flow_dissector_init(&head->dissector, keys, cnt);
798}
799
800static int fl_check_assign_mask(struct cls_fl_head *head,
801 struct fl_flow_mask *mask)
802{
803 int err;
804
805 if (head->mask_assigned) {
806 if (!fl_mask_eq(&head->mask, mask))
807 return -EINVAL;
808 else
809 return 0;
810 }
811
812 /* Mask is not assigned yet. So assign it and init hashtable
813 * according to that.
814 */
815 err = fl_init_hashtable(head, mask);
816 if (err)
817 return err;
818 memcpy(&head->mask, mask, sizeof(head->mask));
819 head->mask_assigned = true;
820
821 fl_init_dissector(head, mask);
822
823 return 0;
824}
825
826static int fl_set_parms(struct net *net, struct tcf_proto *tp,
827 struct cls_fl_filter *f, struct fl_flow_mask *mask,
828 unsigned long base, struct nlattr **tb,
829 struct nlattr *est, bool ovr)
830{
77b9900e
JP		 831 int err;
832
45507529 833 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr);
77b9900e
JP		 834 if (err < 0)
835 return err;
836
837 if (tb[TCA_FLOWER_CLASSID]) {
838 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
839 tcf_bind_filter(tp, &f->res, base);
840 }
841
842 err = fl_set_key(net, tb, &f->key, &mask->key);
843 if (err)
45507529 844 return err;
77b9900e
JP		 845
846 fl_mask_update_range(mask);
847 fl_set_masked_key(&f->mkey, &f->key, mask);
848
77b9900e 849 return 0;
77b9900e
JP		 850}
851
77b9900e
JP		 852static int fl_change(struct net *net, struct sk_buff *in_skb,
853 struct tcf_proto *tp, unsigned long base,
854 u32 handle, struct nlattr **tca,
8113c095 855 void **arg, bool ovr)
77b9900e
JP		 856{
857 struct cls_fl_head *head = rtnl_dereference(tp->root);
8113c095 858 struct cls_fl_filter *fold = *arg;
77b9900e 859 struct cls_fl_filter *fnew;
39b7b6a6 860 struct nlattr **tb;
77b9900e 861 struct fl_flow_mask mask = {};
c15ab236 862 unsigned long idr_index;
77b9900e
JP		 863 int err;
864
865 if (!tca[TCA_OPTIONS])
866 return -EINVAL;
867
39b7b6a6
AB		 868 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
869 if (!tb)
870 return -ENOBUFS;
871
fceb6435
JB		 872 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
873 fl_policy, NULL);
77b9900e 874 if (err < 0)
39b7b6a6 875 goto errout_tb;
77b9900e 876
39b7b6a6
AB		 877 if (fold && handle && fold->handle != handle) {
878 err = -EINVAL;
879 goto errout_tb;
880 }
77b9900e
JP		 881
882 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 883 if (!fnew) {
884 err = -ENOBUFS;
885 goto errout_tb;
886 }
77b9900e 887
b9a24bb7
WC		 888 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
889 if (err < 0)
890 goto errout;
77b9900e
JP		 891
892 if (!handle) {
c15ab236
CM		 893 err = idr_alloc_ext(&head->handle_idr, fnew, &idr_index,
894 1, 0x80000000, GFP_KERNEL);
895 if (err)
77b9900e 896 goto errout;
c15ab236
CM		 897 fnew->handle = idr_index;
898 }
899
900 /* user specifies a handle and it doesn't exist */
901 if (handle && !fold) {
902 err = idr_alloc_ext(&head->handle_idr, fnew, &idr_index,
903 handle, handle + 1, GFP_KERNEL);
904 if (err)
905 goto errout;
906 fnew->handle = idr_index;
77b9900e 907 }
77b9900e 908
e69985c6
AV		 909 if (tb[TCA_FLOWER_FLAGS]) {
910 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
911
912 if (!tc_flags_valid(fnew->flags)) {
913 err = -EINVAL;
fe2502e4 914 goto errout_idr;
e69985c6
AV		 915 }
916 }
5b33f488 917
77b9900e
JP		 918 err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr);
919 if (err)
fe2502e4 920 goto errout_idr;
77b9900e
JP		 921
922 err = fl_check_assign_mask(head, &mask);
923 if (err)
fe2502e4 924 goto errout_idr;
77b9900e 925
e8eb36cd 926 if (!tc_skip_sw(fnew->flags)) {
a3308d8f
PB		 927 if (!fold && fl_lookup(head, &fnew->mkey)) {
928 err = -EEXIST;
fe2502e4 929 goto errout_idr;
a3308d8f
PB		 930 }
931
e69985c6
AV		 932 err = rhashtable_insert_fast(&head->ht, &fnew->ht_node,
933 head->ht_params);
934 if (err)
fe2502e4 935 goto errout_idr;
e69985c6 936 }
5b33f488 937
79685219
HHZ		 938 if (!tc_skip_hw(fnew->flags)) {
939 err = fl_hw_replace_filter(tp,
940 &head->dissector,
941 &mask.key,
3036dab6 942 fnew);
79685219 943 if (err)
fe2502e4 944 goto errout_idr;
79685219 945 }
5b33f488 946
55593960
OG		 947 if (!tc_in_hw(fnew->flags))
948 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
949
5b33f488 950 if (fold) {
725cbb62
JP		 951 if (!tc_skip_sw(fold->flags))
952 rhashtable_remove_fast(&head->ht, &fold->ht_node,
953 head->ht_params);
79685219 954 if (!tc_skip_hw(fold->flags))
3036dab6 955 fl_hw_destroy_filter(tp, fold);
5b33f488 956 }
77b9900e 957
8113c095 958 *arg = fnew;
77b9900e
JP		 959
960 if (fold) {
c15ab236
CM		 961 fnew->handle = handle;
962 idr_replace_ext(&head->handle_idr, fnew, fnew->handle);
ff3532f2 963 list_replace_rcu(&fold->list, &fnew->list);
77b9900e 964 tcf_unbind_filter(tp, &fold->res);
0dadc117 965 tcf_exts_get_net(&fold->exts);
77b9900e
JP		 966 call_rcu(&fold->rcu, fl_destroy_filter);
967 } else {
968 list_add_tail_rcu(&fnew->list, &head->filters);
969 }
970
39b7b6a6 971 kfree(tb);
77b9900e
JP		 972 return 0;
973
fe2502e4
CW		 974errout_idr:
975 if (fnew->handle)
976 idr_remove_ext(&head->handle_idr, fnew->handle);
77b9900e 977errout:
b9a24bb7 978 tcf_exts_destroy(&fnew->exts);
77b9900e 979 kfree(fnew);
39b7b6a6
AB		 980errout_tb:
981 kfree(tb);
77b9900e
JP		 982 return err;
983}
984
8113c095 985static int fl_delete(struct tcf_proto *tp, void *arg, bool *last)
77b9900e
JP		 986{
987 struct cls_fl_head *head = rtnl_dereference(tp->root);
8113c095 988 struct cls_fl_filter *f = arg;
77b9900e 989
725cbb62
JP		 990 if (!tc_skip_sw(f->flags))
991 rhashtable_remove_fast(&head->ht, &f->ht_node,
992 head->ht_params);
13fa876e 993 __fl_delete(tp, f);
763dbf63 994 *last = list_empty(&head->filters);
77b9900e
JP		 995 return 0;
996}
997
998static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
999{
1000 struct cls_fl_head *head = rtnl_dereference(tp->root);
1001 struct cls_fl_filter *f;
1002
1003 list_for_each_entry_rcu(f, &head->filters, list) {
1004 if (arg->count < arg->skip)
1005 goto skip;
8113c095 1006 if (arg->fn(tp, f, arg) < 0) {
77b9900e
JP		 1007 arg->stop = 1;
1008 break;
1009 }
1010skip:
1011 arg->count++;
1012 }
1013}
1014
1015static int fl_dump_key_val(struct sk_buff *skb,
1016 void *val, int val_type,
1017 void *mask, int mask_type, int len)
1018{
1019 int err;
1020
1021 if (!memchr_inv(mask, 0, len))
1022 return 0;
1023 err = nla_put(skb, val_type, len, val);
1024 if (err)
1025 return err;
1026 if (mask_type != TCA_FLOWER_UNSPEC) {
1027 err = nla_put(skb, mask_type, len, mask);
1028 if (err)
1029 return err;
1030 }
1031 return 0;
1032}
1033
a577d8f7
BL		 1034static int fl_dump_key_mpls(struct sk_buff *skb,
1035 struct flow_dissector_key_mpls *mpls_key,
1036 struct flow_dissector_key_mpls *mpls_mask)
1037{
1038 int err;
1039
1040 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
1041 return 0;
1042 if (mpls_mask->mpls_ttl) {
1043 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
1044 mpls_key->mpls_ttl);
1045 if (err)
1046 return err;
1047 }
1048 if (mpls_mask->mpls_tc) {
1049 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
1050 mpls_key->mpls_tc);
1051 if (err)
1052 return err;
1053 }
1054 if (mpls_mask->mpls_label) {
1055 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
1056 mpls_key->mpls_label);
1057 if (err)
1058 return err;
1059 }
1060 if (mpls_mask->mpls_bos) {
1061 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
1062 mpls_key->mpls_bos);
1063 if (err)
1064 return err;
1065 }
1066 return 0;
1067}
1068
4d80cc0a
OG		 1069static int fl_dump_key_ip(struct sk_buff *skb,
1070 struct flow_dissector_key_ip *key,
1071 struct flow_dissector_key_ip *mask)
1072{
1073 if (fl_dump_key_val(skb, &key->tos, TCA_FLOWER_KEY_IP_TOS, &mask->tos,
1074 TCA_FLOWER_KEY_IP_TOS_MASK, sizeof(key->tos)) ||
1075 fl_dump_key_val(skb, &key->ttl, TCA_FLOWER_KEY_IP_TTL, &mask->ttl,
1076 TCA_FLOWER_KEY_IP_TTL_MASK, sizeof(key->ttl)))
1077 return -1;
1078
1079 return 0;
1080}
1081
9399ae9a
HHZ		 1082static int fl_dump_key_vlan(struct sk_buff *skb,
1083 struct flow_dissector_key_vlan *vlan_key,
1084 struct flow_dissector_key_vlan *vlan_mask)
1085{
1086 int err;
1087
1088 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
1089 return 0;
1090 if (vlan_mask->vlan_id) {
1091 err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID,
1092 vlan_key->vlan_id);
1093 if (err)
1094 return err;
1095 }
1096 if (vlan_mask->vlan_priority) {
1097 err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO,
1098 vlan_key->vlan_priority);
1099 if (err)
1100 return err;
1101 }
1102 return 0;
1103}
1104
faa3ffce
OG		 1105static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
1106 u32 *flower_key, u32 *flower_mask,
1107 u32 flower_flag_bit, u32 dissector_flag_bit)
1108{
1109 if (dissector_mask & dissector_flag_bit) {
1110 *flower_mask |= flower_flag_bit;
1111 if (dissector_key & dissector_flag_bit)
1112 *flower_key |= flower_flag_bit;
1113 }
1114}
1115
1116static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1117{
1118 u32 key, mask;
1119 __be32 _key, _mask;
1120 int err;
1121
1122 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1123 return 0;
1124
1125 key = 0;
1126 mask = 0;
1127
1128 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1129 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1130
1131 _key = cpu_to_be32(key);
1132 _mask = cpu_to_be32(mask);
1133
1134 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1135 if (err)
1136 return err;
1137
1138 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1139}
1140
8113c095 1141static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
77b9900e
JP		 1142 struct sk_buff *skb, struct tcmsg *t)
1143{
1144 struct cls_fl_head *head = rtnl_dereference(tp->root);
8113c095 1145 struct cls_fl_filter *f = fh;
77b9900e
JP		 1146 struct nlattr *nest;
1147 struct fl_flow_key *key, *mask;
1148
1149 if (!f)
1150 return skb->len;
1151
1152 t->tcm_handle = f->handle;
1153
1154 nest = nla_nest_start(skb, TCA_OPTIONS);
1155 if (!nest)
1156 goto nla_put_failure;
1157
1158 if (f->res.classid &&
1159 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
1160 goto nla_put_failure;
1161
1162 key = &f->key;
1163 mask = &head->mask.key;
1164
1165 if (mask->indev_ifindex) {
1166 struct net_device *dev;
1167
1168 dev = __dev_get_by_index(net, key->indev_ifindex);
1169 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1170 goto nla_put_failure;
1171 }
1172
79685219
HHZ		 1173 if (!tc_skip_hw(f->flags))
1174 fl_hw_update_stats(tp, f);
10cbc684 1175
77b9900e
JP		 1176 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1177 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1178 sizeof(key->eth.dst)) ||
1179 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1180 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1181 sizeof(key->eth.src)) ||
1182 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1183 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1184 sizeof(key->basic.n_proto)))
1185 goto nla_put_failure;
9399ae9a 1186
a577d8f7
BL		 1187 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
1188 goto nla_put_failure;
1189
9399ae9a
HHZ		 1190 if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan))
1191 goto nla_put_failure;
1192
77b9900e
JP		 1193 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1194 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 1195 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 1196 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a
OG		 1197 sizeof(key->basic.ip_proto)) ||
1198 fl_dump_key_ip(skb, &key->ip, &mask->ip)))
77b9900e
JP		 1199 goto nla_put_failure;
1200
c3f83241 1201 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 1202 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1203 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1204 sizeof(key->ipv4.src)) ||
1205 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1206 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1207 sizeof(key->ipv4.dst))))
1208 goto nla_put_failure;
c3f83241 1209 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 1210 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1211 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1212 sizeof(key->ipv6.src)) ||
1213 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1214 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1215 sizeof(key->ipv6.dst))))
1216 goto nla_put_failure;
1217
1218 if (key->basic.ip_proto == IPPROTO_TCP &&
1219 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1220 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1221 sizeof(key->tp.src)) ||
1222 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1223 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 1224 sizeof(key->tp.dst)) ||
1225 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1226 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1227 sizeof(key->tcp.flags))))
77b9900e
JP		 1228 goto nla_put_failure;
1229 else if (key->basic.ip_proto == IPPROTO_UDP &&
1230 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1231 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1232 sizeof(key->tp.src)) ||
1233 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1234 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 1235 sizeof(key->tp.dst))))
1236 goto nla_put_failure;
1237 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1238 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1239 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1240 sizeof(key->tp.src)) ||
1241 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1242 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 1243 sizeof(key->tp.dst))))
1244 goto nla_put_failure;
7b684884
SH		 1245 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1246 key->basic.ip_proto == IPPROTO_ICMP &&
1247 (fl_dump_key_val(skb, &key->icmp.type,
1248 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1249 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1250 sizeof(key->icmp.type)) ||
1251 fl_dump_key_val(skb, &key->icmp.code,
1252 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1253 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1254 sizeof(key->icmp.code))))
1255 goto nla_put_failure;
1256 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1257 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1258 (fl_dump_key_val(skb, &key->icmp.type,
1259 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1260 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1261 sizeof(key->icmp.type)) ||
1262 fl_dump_key_val(skb, &key->icmp.code,
1263 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1264 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1265 sizeof(key->icmp.code))))
1266 goto nla_put_failure;
99d31326
SH		 1267 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1268 key->basic.n_proto == htons(ETH_P_RARP)) &&
1269 (fl_dump_key_val(skb, &key->arp.sip,
1270 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1271 TCA_FLOWER_KEY_ARP_SIP_MASK,
1272 sizeof(key->arp.sip)) ||
1273 fl_dump_key_val(skb, &key->arp.tip,
1274 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1275 TCA_FLOWER_KEY_ARP_TIP_MASK,
1276 sizeof(key->arp.tip)) ||
1277 fl_dump_key_val(skb, &key->arp.op,
1278 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1279 TCA_FLOWER_KEY_ARP_OP_MASK,
1280 sizeof(key->arp.op)) ||
1281 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1282 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1283 sizeof(key->arp.sha)) ||
1284 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1285 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1286 sizeof(key->arp.tha))))
1287 goto nla_put_failure;
77b9900e 1288
bc3103f1
AV		 1289 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1290 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1291 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1292 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1293 sizeof(key->enc_ipv4.src)) ||
1294 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1295 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1296 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1297 sizeof(key->enc_ipv4.dst))))
1298 goto nla_put_failure;
1299 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1300 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1301 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1302 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1303 sizeof(key->enc_ipv6.src)) ||
1304 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1305 TCA_FLOWER_KEY_ENC_IPV6_DST,
1306 &mask->enc_ipv6.dst,
1307 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1308 sizeof(key->enc_ipv6.dst))))
1309 goto nla_put_failure;
1310
1311 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1312 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 1313 sizeof(key->enc_key_id)) ||
1314 fl_dump_key_val(skb, &key->enc_tp.src,
1315 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1316 &mask->enc_tp.src,
1317 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1318 sizeof(key->enc_tp.src)) ||
1319 fl_dump_key_val(skb, &key->enc_tp.dst,
1320 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1321 &mask->enc_tp.dst,
1322 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1323 sizeof(key->enc_tp.dst)))
bc3103f1
AV		 1324 goto nla_put_failure;
1325
faa3ffce
OG		 1326 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
1327 goto nla_put_failure;
1328
749e6720
OG		 1329 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
1330 goto nla_put_failure;
e69985c6 1331
77b9900e
JP		 1332 if (tcf_exts_dump(skb, &f->exts))
1333 goto nla_put_failure;
1334
1335 nla_nest_end(skb, nest);
1336
1337 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
1338 goto nla_put_failure;
1339
1340 return skb->len;
1341
1342nla_put_failure:
1343 nla_nest_cancel(skb, nest);
1344 return -1;
1345}
1346
07d79fc7
CW		 1347static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
1348{
1349 struct cls_fl_filter *f = fh;
1350
1351 if (f && f->res.classid == classid)
1352 f->res.class = cl;
1353}
1354
77b9900e
JP		 1355static struct tcf_proto_ops cls_fl_ops __read_mostly = {
1356 .kind = "flower",
1357 .classify = fl_classify,
1358 .init = fl_init,
1359 .destroy = fl_destroy,
1360 .get = fl_get,
1361 .change = fl_change,
1362 .delete = fl_delete,
1363 .walk = fl_walk,
1364 .dump = fl_dump,
07d79fc7 1365 .bind_class = fl_bind_class,
77b9900e
JP		 1366 .owner = THIS_MODULE,
1367};
1368
1369static int __init cls_fl_init(void)
1370{
1371 return register_tcf_proto_ops(&cls_fl_ops);
1372}
1373
1374static void __exit cls_fl_exit(void)
1375{
1376 unregister_tcf_proto_ops(&cls_fl_ops);
1377}
1378
1379module_init(cls_fl_init);
1380module_exit(cls_fl_exit);
1381
1382MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1383MODULE_DESCRIPTION("Flower classifier");
1384MODULE_LICENSE("GPL v2");
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