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net: Remove usage of net_device last_rx member
[thirdparty/linux.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>
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		 30struct 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;
7b684884 42 struct flow_dissector_key_icmp icmp;
99d31326 43 struct flow_dissector_key_arp arp;
bc3103f1
AV		 44 struct flow_dissector_key_keyid enc_key_id;
45 union {
46 struct flow_dissector_key_ipv4_addrs enc_ipv4;
47 struct flow_dissector_key_ipv6_addrs enc_ipv6;
48 };
f4d997fd 49 struct flow_dissector_key_ports enc_tp;
77b9900e
JP		 50} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
51
52struct fl_flow_mask_range {
53 unsigned short int start;
54 unsigned short int end;
55};
56
57struct fl_flow_mask {
58 struct fl_flow_key key;
59 struct fl_flow_mask_range range;
60 struct rcu_head rcu;
61};
62
63struct cls_fl_head {
64 struct rhashtable ht;
65 struct fl_flow_mask mask;
66 struct flow_dissector dissector;
67 u32 hgen;
68 bool mask_assigned;
69 struct list_head filters;
70 struct rhashtable_params ht_params;
d9363774
DB		 71 union {
72 struct work_struct work;
73 struct rcu_head rcu;
74 };
77b9900e
JP		 75};
76
77struct cls_fl_filter {
78 struct rhash_head ht_node;
79 struct fl_flow_key mkey;
80 struct tcf_exts exts;
81 struct tcf_result res;
82 struct fl_flow_key key;
83 struct list_head list;
84 u32 handle;
e69985c6 85 u32 flags;
77b9900e 86 struct rcu_head rcu;
7091d8c7
HHZ		 87 struct tc_to_netdev tc;
88 struct net_device *hw_dev;
77b9900e
JP		 89};
90
91static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
92{
93 return mask->range.end - mask->range.start;
94}
95
96static void fl_mask_update_range(struct fl_flow_mask *mask)
97{
98 const u8 *bytes = (const u8 *) &mask->key;
99 size_t size = sizeof(mask->key);
100 size_t i, first = 0, last = size - 1;
101
102 for (i = 0; i < sizeof(mask->key); i++) {
103 if (bytes[i]) {
104 if (!first && i)
105 first = i;
106 last = i;
107 }
108 }
109 mask->range.start = rounddown(first, sizeof(long));
110 mask->range.end = roundup(last + 1, sizeof(long));
111}
112
113static void *fl_key_get_start(struct fl_flow_key *key,
114 const struct fl_flow_mask *mask)
115{
116 return (u8 *) key + mask->range.start;
117}
118
119static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
120 struct fl_flow_mask *mask)
121{
122 const long *lkey = fl_key_get_start(key, mask);
123 const long *lmask = fl_key_get_start(&mask->key, mask);
124 long *lmkey = fl_key_get_start(mkey, mask);
125 int i;
126
127 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
128 *lmkey++ = *lkey++ & *lmask++;
129}
130
131static void fl_clear_masked_range(struct fl_flow_key *key,
132 struct fl_flow_mask *mask)
133{
134 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
135}
136
a3308d8f
PB		 137static struct cls_fl_filter *fl_lookup(struct cls_fl_head *head,
138 struct fl_flow_key *mkey)
139{
140 return rhashtable_lookup_fast(&head->ht,
141 fl_key_get_start(mkey, &head->mask),
142 head->ht_params);
143}
144
77b9900e
JP		 145static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
146 struct tcf_result *res)
147{
148 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
149 struct cls_fl_filter *f;
150 struct fl_flow_key skb_key;
151 struct fl_flow_key skb_mkey;
bc3103f1 152 struct ip_tunnel_info *info;
77b9900e 153
e69985c6
AV		 154 if (!atomic_read(&head->ht.nelems))
155 return -1;
156
77b9900e 157 fl_clear_masked_range(&skb_key, &head->mask);
bc3103f1
AV		 158
159 info = skb_tunnel_info(skb);
160 if (info) {
161 struct ip_tunnel_key *key = &info->key;
162
163 switch (ip_tunnel_info_af(info)) {
164 case AF_INET:
0df0f207
PB		 165 skb_key.enc_control.addr_type =
166 FLOW_DISSECTOR_KEY_IPV4_ADDRS;
bc3103f1
AV		 167 skb_key.enc_ipv4.src = key->u.ipv4.src;
168 skb_key.enc_ipv4.dst = key->u.ipv4.dst;
169 break;
170 case AF_INET6:
0df0f207
PB		 171 skb_key.enc_control.addr_type =
172 FLOW_DISSECTOR_KEY_IPV6_ADDRS;
bc3103f1
AV		 173 skb_key.enc_ipv6.src = key->u.ipv6.src;
174 skb_key.enc_ipv6.dst = key->u.ipv6.dst;
175 break;
176 }
177
178 skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id);
f4d997fd
HHZ		 179 skb_key.enc_tp.src = key->tp_src;
180 skb_key.enc_tp.dst = key->tp_dst;
bc3103f1
AV		 181 }
182
77b9900e
JP		 183 skb_key.indev_ifindex = skb->skb_iif;
184 /* skb_flow_dissect() does not set n_proto in case an unknown protocol,
185 * so do it rather here.
186 */
187 skb_key.basic.n_proto = skb->protocol;
cd79a238 188 skb_flow_dissect(skb, &head->dissector, &skb_key, 0);
77b9900e
JP		 189
190 fl_set_masked_key(&skb_mkey, &skb_key, &head->mask);
191
a3308d8f 192 f = fl_lookup(head, &skb_mkey);
e8eb36cd 193 if (f && !tc_skip_sw(f->flags)) {
77b9900e
JP		 194 *res = f->res;
195 return tcf_exts_exec(skb, &f->exts, res);
196 }
197 return -1;
198}
199
200static int fl_init(struct tcf_proto *tp)
201{
202 struct cls_fl_head *head;
203
204 head = kzalloc(sizeof(*head), GFP_KERNEL);
205 if (!head)
206 return -ENOBUFS;
207
208 INIT_LIST_HEAD_RCU(&head->filters);
209 rcu_assign_pointer(tp->root, head);
210
211 return 0;
212}
213
214static void fl_destroy_filter(struct rcu_head *head)
215{
216 struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu);
217
218 tcf_exts_destroy(&f->exts);
219 kfree(f);
220}
221
3036dab6 222static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
5b33f488 223{
5b33f488 224 struct tc_cls_flower_offload offload = {0};
7091d8c7
HHZ		 225 struct net_device *dev = f->hw_dev;
226 struct tc_to_netdev *tc = &f->tc;
5b33f488 227
79685219 228 if (!tc_can_offload(dev, tp))
5b33f488
AV		 229 return;
230
231 offload.command = TC_CLSFLOWER_DESTROY;
3036dab6 232 offload.cookie = (unsigned long)f;
5b33f488 233
7091d8c7
HHZ		 234 tc->type = TC_SETUP_CLSFLOWER;
235 tc->cls_flower = &offload;
5b33f488 236
7091d8c7 237 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
5b33f488
AV		 238}
239
e8eb36cd
AV		 240static int fl_hw_replace_filter(struct tcf_proto *tp,
241 struct flow_dissector *dissector,
242 struct fl_flow_key *mask,
3036dab6 243 struct cls_fl_filter *f)
5b33f488
AV		 244{
245 struct net_device *dev = tp->q->dev_queue->dev;
246 struct tc_cls_flower_offload offload = {0};
7091d8c7 247 struct tc_to_netdev *tc = &f->tc;
e8eb36cd 248 int err;
5b33f488 249
7091d8c7 250 if (!tc_can_offload(dev, tp)) {
a6e16931
HHZ		 251 if (tcf_exts_get_dev(dev, &f->exts, &f->hw_dev) ||
252 (f->hw_dev && !tc_can_offload(f->hw_dev, tp))) {
253 f->hw_dev = dev;
7091d8c7 254 return tc_skip_sw(f->flags) ? -EINVAL : 0;
a6e16931 255 }
7091d8c7
HHZ		 256 dev = f->hw_dev;
257 tc->egress_dev = true;
258 } else {
259 f->hw_dev = dev;
260 }
5b33f488
AV		 261
262 offload.command = TC_CLSFLOWER_REPLACE;
3036dab6 263 offload.cookie = (unsigned long)f;
5b33f488
AV		 264 offload.dissector = dissector;
265 offload.mask = mask;
f93bd17b 266 offload.key = &f->mkey;
3036dab6 267 offload.exts = &f->exts;
5b33f488 268
7091d8c7
HHZ		 269 tc->type = TC_SETUP_CLSFLOWER;
270 tc->cls_flower = &offload;
5b33f488 271
5a7a5555 272 err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
7091d8c7 273 tc);
e8eb36cd 274
3036dab6 275 if (tc_skip_sw(f->flags))
e8eb36cd 276 return err;
e8eb36cd 277 return 0;
5b33f488
AV		 278}
279
10cbc684
AV		 280static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
281{
10cbc684 282 struct tc_cls_flower_offload offload = {0};
7091d8c7
HHZ		 283 struct net_device *dev = f->hw_dev;
284 struct tc_to_netdev *tc = &f->tc;
10cbc684 285
79685219 286 if (!tc_can_offload(dev, tp))
10cbc684
AV		 287 return;
288
289 offload.command = TC_CLSFLOWER_STATS;
290 offload.cookie = (unsigned long)f;
291 offload.exts = &f->exts;
292
7091d8c7
HHZ		 293 tc->type = TC_SETUP_CLSFLOWER;
294 tc->cls_flower = &offload;
10cbc684 295
7091d8c7 296 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
10cbc684
AV		 297}
298
13fa876e
RD		 299static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
300{
301 list_del_rcu(&f->list);
79685219 302 if (!tc_skip_hw(f->flags))
3036dab6 303 fl_hw_destroy_filter(tp, f);
13fa876e
RD		 304 tcf_unbind_filter(tp, &f->res);
305 call_rcu(&f->rcu, fl_destroy_filter);
306}
307
d9363774
DB		 308static void fl_destroy_sleepable(struct work_struct *work)
309{
310 struct cls_fl_head *head = container_of(work, struct cls_fl_head,
311 work);
312 if (head->mask_assigned)
313 rhashtable_destroy(&head->ht);
314 kfree(head);
315 module_put(THIS_MODULE);
316}
317
318static void fl_destroy_rcu(struct rcu_head *rcu)
319{
320 struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu);
321
322 INIT_WORK(&head->work, fl_destroy_sleepable);
323 schedule_work(&head->work);
324}
325
77b9900e
JP		 326static bool fl_destroy(struct tcf_proto *tp, bool force)
327{
328 struct cls_fl_head *head = rtnl_dereference(tp->root);
329 struct cls_fl_filter *f, *next;
330
331 if (!force && !list_empty(&head->filters))
332 return false;
333
13fa876e
RD		 334 list_for_each_entry_safe(f, next, &head->filters, list)
335 __fl_delete(tp, f);
d9363774
DB		 336
337 __module_get(THIS_MODULE);
338 call_rcu(&head->rcu, fl_destroy_rcu);
2745529a 339
77b9900e
JP		 340 return true;
341}
342
343static unsigned long fl_get(struct tcf_proto *tp, u32 handle)
344{
345 struct cls_fl_head *head = rtnl_dereference(tp->root);
346 struct cls_fl_filter *f;
347
348 list_for_each_entry(f, &head->filters, list)
349 if (f->handle == handle)
350 return (unsigned long) f;
351 return 0;
352}
353
354static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
355 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
356 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
357 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
358 .len = IFNAMSIZ },
359 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
360 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
361 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
362 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
363 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
364 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
365 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
366 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
367 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
368 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
369 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
370 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
371 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
372 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
373 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
374 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 375 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
376 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 377 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
378 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
379 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 380 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
381 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
382 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
383 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
384 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
385 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
386 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
387 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
388 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 389 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
390 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
391 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
392 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 393 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
394 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
395 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
396 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 397 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
398 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
399 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
400 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 401 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
402 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 403 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
404 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
405 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
406 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
407 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
408 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
409 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
410 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 411 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
412 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
413 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
414 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
415 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
416 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
417 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
418 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
419 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
420 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
77b9900e
JP		 421};
422
423static void fl_set_key_val(struct nlattr **tb,
424 void *val, int val_type,
425 void *mask, int mask_type, int len)
426{
427 if (!tb[val_type])
428 return;
429 memcpy(val, nla_data(tb[val_type]), len);
430 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
431 memset(mask, 0xff, len);
432 else
433 memcpy(mask, nla_data(tb[mask_type]), len);
434}
435
9399ae9a
HHZ		 436static void fl_set_key_vlan(struct nlattr **tb,
437 struct flow_dissector_key_vlan *key_val,
438 struct flow_dissector_key_vlan *key_mask)
439{
440#define VLAN_PRIORITY_MASK 0x7
441
442 if (tb[TCA_FLOWER_KEY_VLAN_ID]) {
443 key_val->vlan_id =
444 nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK;
445 key_mask->vlan_id = VLAN_VID_MASK;
446 }
447 if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) {
448 key_val->vlan_priority =
449 nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) &
450 VLAN_PRIORITY_MASK;
451 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
452 }
453}
454
faa3ffce
OG		 455static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
456 u32 *dissector_key, u32 *dissector_mask,
457 u32 flower_flag_bit, u32 dissector_flag_bit)
458{
459 if (flower_mask & flower_flag_bit) {
460 *dissector_mask |= dissector_flag_bit;
461 if (flower_key & flower_flag_bit)
462 *dissector_key |= dissector_flag_bit;
463 }
464}
465
d9724772
OG		 466static int fl_set_key_flags(struct nlattr **tb,
467 u32 *flags_key, u32 *flags_mask)
faa3ffce
OG		 468{
469 u32 key, mask;
470
d9724772
OG		 471 /* mask is mandatory for flags */
472 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
473 return -EINVAL;
faa3ffce
OG		 474
475 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 476 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 477
478 *flags_key = 0;
479 *flags_mask = 0;
480
481 fl_set_key_flag(key, mask, flags_key, flags_mask,
482 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
d9724772
OG		 483
484 return 0;
faa3ffce
OG		 485}
486
77b9900e
JP		 487static int fl_set_key(struct net *net, struct nlattr **tb,
488 struct fl_flow_key *key, struct fl_flow_key *mask)
489{
9399ae9a 490 __be16 ethertype;
d9724772 491 int ret = 0;
dd3aa3b5 492#ifdef CONFIG_NET_CLS_IND
77b9900e 493 if (tb[TCA_FLOWER_INDEV]) {
dd3aa3b5 494 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]);
77b9900e
JP		 495 if (err < 0)
496 return err;
497 key->indev_ifindex = err;
498 mask->indev_ifindex = 0xffffffff;
499 }
dd3aa3b5 500#endif
77b9900e
JP		 501
502 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
503 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
504 sizeof(key->eth.dst));
505 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
506 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
507 sizeof(key->eth.src));
66530bdf 508
0b498a52 509 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 510 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
511
0b498a52
AB		 512 if (ethertype == htons(ETH_P_8021Q)) {
513 fl_set_key_vlan(tb, &key->vlan, &mask->vlan);
514 fl_set_key_val(tb, &key->basic.n_proto,
515 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
516 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
517 sizeof(key->basic.n_proto));
518 } else {
519 key->basic.n_proto = ethertype;
520 mask->basic.n_proto = cpu_to_be16(~0);
521 }
9399ae9a 522 }
66530bdf 523
77b9900e
JP		 524 if (key->basic.n_proto == htons(ETH_P_IP) ||
525 key->basic.n_proto == htons(ETH_P_IPV6)) {
526 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
527 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
528 sizeof(key->basic.ip_proto));
529 }
66530bdf
JHS		 530
531 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
532 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 533 mask->control.addr_type = ~0;
77b9900e
JP		 534 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
535 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
536 sizeof(key->ipv4.src));
537 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
538 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
539 sizeof(key->ipv4.dst));
66530bdf
JHS		 540 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
541 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 542 mask->control.addr_type = ~0;
77b9900e
JP		 543 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
544 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
545 sizeof(key->ipv6.src));
546 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
547 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
548 sizeof(key->ipv6.dst));
549 }
66530bdf 550
77b9900e
JP		 551 if (key->basic.ip_proto == IPPROTO_TCP) {
552 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 553 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 554 sizeof(key->tp.src));
555 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 556 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e
JP		 557 sizeof(key->tp.dst));
558 } else if (key->basic.ip_proto == IPPROTO_UDP) {
559 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 560 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 561 sizeof(key->tp.src));
562 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 563 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 564 sizeof(key->tp.dst));
5976c5f4
SH		 565 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
566 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
567 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
568 sizeof(key->tp.src));
569 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
570 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
571 sizeof(key->tp.dst));
7b684884
SH		 572 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
573 key->basic.ip_proto == IPPROTO_ICMP) {
574 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
575 &mask->icmp.type,
576 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
577 sizeof(key->icmp.type));
578 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
579 &mask->icmp.code,
580 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
581 sizeof(key->icmp.code));
582 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
583 key->basic.ip_proto == IPPROTO_ICMPV6) {
584 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
585 &mask->icmp.type,
586 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
587 sizeof(key->icmp.type));
588 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
589 &mask->icmp.code,
590 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
591 sizeof(key->icmp.code));
99d31326
SH		 592 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
593 key->basic.n_proto == htons(ETH_P_RARP)) {
594 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
595 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
596 sizeof(key->arp.sip));
597 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
598 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
599 sizeof(key->arp.tip));
600 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
601 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
602 sizeof(key->arp.op));
603 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
604 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
605 sizeof(key->arp.sha));
606 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
607 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
608 sizeof(key->arp.tha));
77b9900e
JP		 609 }
610
bc3103f1
AV		 611 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
612 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
613 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 614 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 615 fl_set_key_val(tb, &key->enc_ipv4.src,
616 TCA_FLOWER_KEY_ENC_IPV4_SRC,
617 &mask->enc_ipv4.src,
618 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
619 sizeof(key->enc_ipv4.src));
620 fl_set_key_val(tb, &key->enc_ipv4.dst,
621 TCA_FLOWER_KEY_ENC_IPV4_DST,
622 &mask->enc_ipv4.dst,
623 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
624 sizeof(key->enc_ipv4.dst));
625 }
626
627 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
628 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
629 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 630 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 631 fl_set_key_val(tb, &key->enc_ipv6.src,
632 TCA_FLOWER_KEY_ENC_IPV6_SRC,
633 &mask->enc_ipv6.src,
634 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
635 sizeof(key->enc_ipv6.src));
636 fl_set_key_val(tb, &key->enc_ipv6.dst,
637 TCA_FLOWER_KEY_ENC_IPV6_DST,
638 &mask->enc_ipv6.dst,
639 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
640 sizeof(key->enc_ipv6.dst));
641 }
642
643 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 644 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 645 sizeof(key->enc_key_id.keyid));
646
f4d997fd
HHZ		 647 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
648 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
649 sizeof(key->enc_tp.src));
650
651 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
652 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
653 sizeof(key->enc_tp.dst));
654
d9724772
OG		 655 if (tb[TCA_FLOWER_KEY_FLAGS])
656 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
faa3ffce 657
d9724772 658 return ret;
77b9900e
JP		 659}
660
661static bool fl_mask_eq(struct fl_flow_mask *mask1,
662 struct fl_flow_mask *mask2)
663{
664 const long *lmask1 = fl_key_get_start(&mask1->key, mask1);
665 const long *lmask2 = fl_key_get_start(&mask2->key, mask2);
666
667 return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) &&
668 !memcmp(lmask1, lmask2, fl_mask_range(mask1));
669}
670
671static const struct rhashtable_params fl_ht_params = {
672 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
673 .head_offset = offsetof(struct cls_fl_filter, ht_node),
674 .automatic_shrinking = true,
675};
676
677static int fl_init_hashtable(struct cls_fl_head *head,
678 struct fl_flow_mask *mask)
679{
680 head->ht_params = fl_ht_params;
681 head->ht_params.key_len = fl_mask_range(mask);
682 head->ht_params.key_offset += mask->range.start;
683
684 return rhashtable_init(&head->ht, &head->ht_params);
685}
686
687#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
688#define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
77b9900e 689
339ba878
HHZ		 690#define FL_KEY_IS_MASKED(mask, member) \
691 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
692 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 693
694#define FL_KEY_SET(keys, cnt, id, member) \
695 do { \
696 keys[cnt].key_id = id; \
697 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
698 cnt++; \
699 } while(0);
700
339ba878 701#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 702 do { \
339ba878 703 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 704 FL_KEY_SET(keys, cnt, id, member); \
705 } while(0);
706
707static void fl_init_dissector(struct cls_fl_head *head,
708 struct fl_flow_mask *mask)
709{
710 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
711 size_t cnt = 0;
712
42aecaa9 713 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 714 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
339ba878
HHZ		 715 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
716 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
717 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
718 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
719 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
720 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
721 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
722 FLOW_DISSECTOR_KEY_PORTS, tp);
7b684884
SH		 723 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
724 FLOW_DISSECTOR_KEY_ICMP, icmp);
99d31326
SH		 725 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
726 FLOW_DISSECTOR_KEY_ARP, arp);
9399ae9a
HHZ		 727 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
728 FLOW_DISSECTOR_KEY_VLAN, vlan);
519d1052
HHZ		 729 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
730 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
731 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
732 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
733 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
734 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
735 if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) ||
736 FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
737 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
738 enc_control);
f4d997fd
HHZ		 739 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
740 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
77b9900e
JP		 741
742 skb_flow_dissector_init(&head->dissector, keys, cnt);
743}
744
745static int fl_check_assign_mask(struct cls_fl_head *head,
746 struct fl_flow_mask *mask)
747{
748 int err;
749
750 if (head->mask_assigned) {
751 if (!fl_mask_eq(&head->mask, mask))
752 return -EINVAL;
753 else
754 return 0;
755 }
756
757 /* Mask is not assigned yet. So assign it and init hashtable
758 * according to that.
759 */
760 err = fl_init_hashtable(head, mask);
761 if (err)
762 return err;
763 memcpy(&head->mask, mask, sizeof(head->mask));
764 head->mask_assigned = true;
765
766 fl_init_dissector(head, mask);
767
768 return 0;
769}
770
771static int fl_set_parms(struct net *net, struct tcf_proto *tp,
772 struct cls_fl_filter *f, struct fl_flow_mask *mask,
773 unsigned long base, struct nlattr **tb,
774 struct nlattr *est, bool ovr)
775{
776 struct tcf_exts e;
777 int err;
778
b9a24bb7 779 err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0);
77b9900e
JP		 780 if (err < 0)
781 return err;
b9a24bb7
WC		 782 err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
783 if (err < 0)
784 goto errout;
77b9900e
JP		 785
786 if (tb[TCA_FLOWER_CLASSID]) {
787 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
788 tcf_bind_filter(tp, &f->res, base);
789 }
790
791 err = fl_set_key(net, tb, &f->key, &mask->key);
792 if (err)
793 goto errout;
794
795 fl_mask_update_range(mask);
796 fl_set_masked_key(&f->mkey, &f->key, mask);
797
798 tcf_exts_change(tp, &f->exts, &e);
799
800 return 0;
801errout:
802 tcf_exts_destroy(&e);
803 return err;
804}
805
806static u32 fl_grab_new_handle(struct tcf_proto *tp,
807 struct cls_fl_head *head)
808{
809 unsigned int i = 0x80000000;
810 u32 handle;
811
812 do {
813 if (++head->hgen == 0x7FFFFFFF)
814 head->hgen = 1;
815 } while (--i > 0 && fl_get(tp, head->hgen));
816
817 if (unlikely(i == 0)) {
818 pr_err("Insufficient number of handles\n");
819 handle = 0;
820 } else {
821 handle = head->hgen;
822 }
823
824 return handle;
825}
826
827static int fl_change(struct net *net, struct sk_buff *in_skb,
828 struct tcf_proto *tp, unsigned long base,
829 u32 handle, struct nlattr **tca,
830 unsigned long *arg, bool ovr)
831{
832 struct cls_fl_head *head = rtnl_dereference(tp->root);
833 struct cls_fl_filter *fold = (struct cls_fl_filter *) *arg;
834 struct cls_fl_filter *fnew;
835 struct nlattr *tb[TCA_FLOWER_MAX + 1];
836 struct fl_flow_mask mask = {};
837 int err;
838
839 if (!tca[TCA_OPTIONS])
840 return -EINVAL;
841
842 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy);
843 if (err < 0)
844 return err;
845
846 if (fold && handle && fold->handle != handle)
847 return -EINVAL;
848
849 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
850 if (!fnew)
851 return -ENOBUFS;
852
b9a24bb7
WC		 853 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
854 if (err < 0)
855 goto errout;
77b9900e
JP		 856
857 if (!handle) {
858 handle = fl_grab_new_handle(tp, head);
859 if (!handle) {
860 err = -EINVAL;
861 goto errout;
862 }
863 }
864 fnew->handle = handle;
865
e69985c6
AV		 866 if (tb[TCA_FLOWER_FLAGS]) {
867 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
868
869 if (!tc_flags_valid(fnew->flags)) {
870 err = -EINVAL;
871 goto errout;
872 }
873 }
5b33f488 874
77b9900e
JP		 875 err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr);
876 if (err)
877 goto errout;
878
879 err = fl_check_assign_mask(head, &mask);
880 if (err)
881 goto errout;
882
e8eb36cd 883 if (!tc_skip_sw(fnew->flags)) {
a3308d8f
PB		 884 if (!fold && fl_lookup(head, &fnew->mkey)) {
885 err = -EEXIST;
886 goto errout;
887 }
888
e69985c6
AV		 889 err = rhashtable_insert_fast(&head->ht, &fnew->ht_node,
890 head->ht_params);
891 if (err)
892 goto errout;
893 }
5b33f488 894
79685219
HHZ		 895 if (!tc_skip_hw(fnew->flags)) {
896 err = fl_hw_replace_filter(tp,
897 &head->dissector,
898 &mask.key,
3036dab6 899 fnew);
79685219
HHZ		 900 if (err)
901 goto errout;
902 }
5b33f488
AV		 903
904 if (fold) {
725cbb62
JP		 905 if (!tc_skip_sw(fold->flags))
906 rhashtable_remove_fast(&head->ht, &fold->ht_node,
907 head->ht_params);
79685219 908 if (!tc_skip_hw(fold->flags))
3036dab6 909 fl_hw_destroy_filter(tp, fold);
5b33f488 910 }
77b9900e
JP		 911
912 *arg = (unsigned long) fnew;
913
914 if (fold) {
ff3532f2 915 list_replace_rcu(&fold->list, &fnew->list);
77b9900e
JP		 916 tcf_unbind_filter(tp, &fold->res);
917 call_rcu(&fold->rcu, fl_destroy_filter);
918 } else {
919 list_add_tail_rcu(&fnew->list, &head->filters);
920 }
921
922 return 0;
923
924errout:
b9a24bb7 925 tcf_exts_destroy(&fnew->exts);
77b9900e
JP		 926 kfree(fnew);
927 return err;
928}
929
930static int fl_delete(struct tcf_proto *tp, unsigned long arg)
931{
932 struct cls_fl_head *head = rtnl_dereference(tp->root);
933 struct cls_fl_filter *f = (struct cls_fl_filter *) arg;
934
725cbb62
JP		 935 if (!tc_skip_sw(f->flags))
936 rhashtable_remove_fast(&head->ht, &f->ht_node,
937 head->ht_params);
13fa876e 938 __fl_delete(tp, f);
77b9900e
JP		 939 return 0;
940}
941
942static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
943{
944 struct cls_fl_head *head = rtnl_dereference(tp->root);
945 struct cls_fl_filter *f;
946
947 list_for_each_entry_rcu(f, &head->filters, list) {
948 if (arg->count < arg->skip)
949 goto skip;
950 if (arg->fn(tp, (unsigned long) f, arg) < 0) {
951 arg->stop = 1;
952 break;
953 }
954skip:
955 arg->count++;
956 }
957}
958
959static int fl_dump_key_val(struct sk_buff *skb,
960 void *val, int val_type,
961 void *mask, int mask_type, int len)
962{
963 int err;
964
965 if (!memchr_inv(mask, 0, len))
966 return 0;
967 err = nla_put(skb, val_type, len, val);
968 if (err)
969 return err;
970 if (mask_type != TCA_FLOWER_UNSPEC) {
971 err = nla_put(skb, mask_type, len, mask);
972 if (err)
973 return err;
974 }
975 return 0;
976}
977
9399ae9a
HHZ		 978static int fl_dump_key_vlan(struct sk_buff *skb,
979 struct flow_dissector_key_vlan *vlan_key,
980 struct flow_dissector_key_vlan *vlan_mask)
981{
982 int err;
983
984 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
985 return 0;
986 if (vlan_mask->vlan_id) {
987 err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID,
988 vlan_key->vlan_id);
989 if (err)
990 return err;
991 }
992 if (vlan_mask->vlan_priority) {
993 err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO,
994 vlan_key->vlan_priority);
995 if (err)
996 return err;
997 }
998 return 0;
999}
1000
faa3ffce
OG		 1001static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
1002 u32 *flower_key, u32 *flower_mask,
1003 u32 flower_flag_bit, u32 dissector_flag_bit)
1004{
1005 if (dissector_mask & dissector_flag_bit) {
1006 *flower_mask |= flower_flag_bit;
1007 if (dissector_key & dissector_flag_bit)
1008 *flower_key |= flower_flag_bit;
1009 }
1010}
1011
1012static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1013{
1014 u32 key, mask;
1015 __be32 _key, _mask;
1016 int err;
1017
1018 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1019 return 0;
1020
1021 key = 0;
1022 mask = 0;
1023
1024 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1025 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1026
1027 _key = cpu_to_be32(key);
1028 _mask = cpu_to_be32(mask);
1029
1030 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1031 if (err)
1032 return err;
1033
1034 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1035}
1036
77b9900e
JP		 1037static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
1038 struct sk_buff *skb, struct tcmsg *t)
1039{
1040 struct cls_fl_head *head = rtnl_dereference(tp->root);
1041 struct cls_fl_filter *f = (struct cls_fl_filter *) fh;
1042 struct nlattr *nest;
1043 struct fl_flow_key *key, *mask;
1044
1045 if (!f)
1046 return skb->len;
1047
1048 t->tcm_handle = f->handle;
1049
1050 nest = nla_nest_start(skb, TCA_OPTIONS);
1051 if (!nest)
1052 goto nla_put_failure;
1053
1054 if (f->res.classid &&
1055 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
1056 goto nla_put_failure;
1057
1058 key = &f->key;
1059 mask = &head->mask.key;
1060
1061 if (mask->indev_ifindex) {
1062 struct net_device *dev;
1063
1064 dev = __dev_get_by_index(net, key->indev_ifindex);
1065 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1066 goto nla_put_failure;
1067 }
1068
79685219
HHZ		 1069 if (!tc_skip_hw(f->flags))
1070 fl_hw_update_stats(tp, f);
10cbc684 1071
77b9900e
JP		 1072 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1073 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1074 sizeof(key->eth.dst)) ||
1075 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1076 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1077 sizeof(key->eth.src)) ||
1078 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1079 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1080 sizeof(key->basic.n_proto)))
1081 goto nla_put_failure;
9399ae9a
HHZ		 1082
1083 if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan))
1084 goto nla_put_failure;
1085
77b9900e
JP		 1086 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1087 key->basic.n_proto == htons(ETH_P_IPV6)) &&
1088 fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1089 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1090 sizeof(key->basic.ip_proto)))
1091 goto nla_put_failure;
1092
c3f83241 1093 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 1094 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1095 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1096 sizeof(key->ipv4.src)) ||
1097 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1098 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1099 sizeof(key->ipv4.dst))))
1100 goto nla_put_failure;
c3f83241 1101 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 1102 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1103 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1104 sizeof(key->ipv6.src)) ||
1105 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1106 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1107 sizeof(key->ipv6.dst))))
1108 goto nla_put_failure;
1109
1110 if (key->basic.ip_proto == IPPROTO_TCP &&
1111 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1112 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1113 sizeof(key->tp.src)) ||
1114 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1115 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e
JP		 1116 sizeof(key->tp.dst))))
1117 goto nla_put_failure;
1118 else if (key->basic.ip_proto == IPPROTO_UDP &&
1119 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1120 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1121 sizeof(key->tp.src)) ||
1122 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1123 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 1124 sizeof(key->tp.dst))))
1125 goto nla_put_failure;
1126 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1127 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1128 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1129 sizeof(key->tp.src)) ||
1130 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1131 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 1132 sizeof(key->tp.dst))))
1133 goto nla_put_failure;
7b684884
SH		 1134 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1135 key->basic.ip_proto == IPPROTO_ICMP &&
1136 (fl_dump_key_val(skb, &key->icmp.type,
1137 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1138 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1139 sizeof(key->icmp.type)) ||
1140 fl_dump_key_val(skb, &key->icmp.code,
1141 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1142 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1143 sizeof(key->icmp.code))))
1144 goto nla_put_failure;
1145 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1146 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1147 (fl_dump_key_val(skb, &key->icmp.type,
1148 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1149 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1150 sizeof(key->icmp.type)) ||
1151 fl_dump_key_val(skb, &key->icmp.code,
1152 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1153 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1154 sizeof(key->icmp.code))))
1155 goto nla_put_failure;
99d31326
SH		 1156 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1157 key->basic.n_proto == htons(ETH_P_RARP)) &&
1158 (fl_dump_key_val(skb, &key->arp.sip,
1159 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1160 TCA_FLOWER_KEY_ARP_SIP_MASK,
1161 sizeof(key->arp.sip)) ||
1162 fl_dump_key_val(skb, &key->arp.tip,
1163 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1164 TCA_FLOWER_KEY_ARP_TIP_MASK,
1165 sizeof(key->arp.tip)) ||
1166 fl_dump_key_val(skb, &key->arp.op,
1167 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1168 TCA_FLOWER_KEY_ARP_OP_MASK,
1169 sizeof(key->arp.op)) ||
1170 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1171 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1172 sizeof(key->arp.sha)) ||
1173 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1174 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1175 sizeof(key->arp.tha))))
1176 goto nla_put_failure;
77b9900e 1177
bc3103f1
AV		 1178 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1179 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1180 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1181 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1182 sizeof(key->enc_ipv4.src)) ||
1183 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1184 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1185 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1186 sizeof(key->enc_ipv4.dst))))
1187 goto nla_put_failure;
1188 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1189 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1190 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1191 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1192 sizeof(key->enc_ipv6.src)) ||
1193 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1194 TCA_FLOWER_KEY_ENC_IPV6_DST,
1195 &mask->enc_ipv6.dst,
1196 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1197 sizeof(key->enc_ipv6.dst))))
1198 goto nla_put_failure;
1199
1200 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1201 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 1202 sizeof(key->enc_key_id)) ||
1203 fl_dump_key_val(skb, &key->enc_tp.src,
1204 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1205 &mask->enc_tp.src,
1206 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1207 sizeof(key->enc_tp.src)) ||
1208 fl_dump_key_val(skb, &key->enc_tp.dst,
1209 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1210 &mask->enc_tp.dst,
1211 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1212 sizeof(key->enc_tp.dst)))
bc3103f1
AV		 1213 goto nla_put_failure;
1214
faa3ffce
OG		 1215 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
1216 goto nla_put_failure;
1217
e69985c6
AV		 1218 nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags);
1219
77b9900e
JP		 1220 if (tcf_exts_dump(skb, &f->exts))
1221 goto nla_put_failure;
1222
1223 nla_nest_end(skb, nest);
1224
1225 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
1226 goto nla_put_failure;
1227
1228 return skb->len;
1229
1230nla_put_failure:
1231 nla_nest_cancel(skb, nest);
1232 return -1;
1233}
1234
1235static struct tcf_proto_ops cls_fl_ops __read_mostly = {
1236 .kind = "flower",
1237 .classify = fl_classify,
1238 .init = fl_init,
1239 .destroy = fl_destroy,
1240 .get = fl_get,
1241 .change = fl_change,
1242 .delete = fl_delete,
1243 .walk = fl_walk,
1244 .dump = fl_dump,
1245 .owner = THIS_MODULE,
1246};
1247
1248static int __init cls_fl_init(void)
1249{
1250 return register_tcf_proto_ops(&cls_fl_ops);
1251}
1252
1253static void __exit cls_fl_exit(void)
1254{
1255 unregister_tcf_proto_ops(&cls_fl_ops);
1256}
1257
1258module_init(cls_fl_init);
1259module_exit(cls_fl_exit);
1260
1261MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1262MODULE_DESCRIPTION("Flower classifier");
1263MODULE_LICENSE("GPL v2");
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