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ipv6: sr: add missing Kbuild export for header files
[linux-2.6-block.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
137static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
138 struct tcf_result *res)
139{
140 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
141 struct cls_fl_filter *f;
142 struct fl_flow_key skb_key;
143 struct fl_flow_key skb_mkey;
bc3103f1 144 struct ip_tunnel_info *info;
77b9900e 145
e69985c6
AV		 146 if (!atomic_read(&head->ht.nelems))
147 return -1;
148
77b9900e 149 fl_clear_masked_range(&skb_key, &head->mask);
bc3103f1
AV		 150
151 info = skb_tunnel_info(skb);
152 if (info) {
153 struct ip_tunnel_key *key = &info->key;
154
155 switch (ip_tunnel_info_af(info)) {
156 case AF_INET:
0df0f207
PB		 157 skb_key.enc_control.addr_type =
158 FLOW_DISSECTOR_KEY_IPV4_ADDRS;
bc3103f1
AV		 159 skb_key.enc_ipv4.src = key->u.ipv4.src;
160 skb_key.enc_ipv4.dst = key->u.ipv4.dst;
161 break;
162 case AF_INET6:
0df0f207
PB		 163 skb_key.enc_control.addr_type =
164 FLOW_DISSECTOR_KEY_IPV6_ADDRS;
bc3103f1
AV		 165 skb_key.enc_ipv6.src = key->u.ipv6.src;
166 skb_key.enc_ipv6.dst = key->u.ipv6.dst;
167 break;
168 }
169
170 skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id);
f4d997fd
HHZ		 171 skb_key.enc_tp.src = key->tp_src;
172 skb_key.enc_tp.dst = key->tp_dst;
bc3103f1
AV		 173 }
174
77b9900e
JP		 175 skb_key.indev_ifindex = skb->skb_iif;
176 /* skb_flow_dissect() does not set n_proto in case an unknown protocol,
177 * so do it rather here.
178 */
179 skb_key.basic.n_proto = skb->protocol;
cd79a238 180 skb_flow_dissect(skb, &head->dissector, &skb_key, 0);
77b9900e
JP		 181
182 fl_set_masked_key(&skb_mkey, &skb_key, &head->mask);
183
184 f = rhashtable_lookup_fast(&head->ht,
185 fl_key_get_start(&skb_mkey, &head->mask),
186 head->ht_params);
e8eb36cd 187 if (f && !tc_skip_sw(f->flags)) {
77b9900e
JP		 188 *res = f->res;
189 return tcf_exts_exec(skb, &f->exts, res);
190 }
191 return -1;
192}
193
194static int fl_init(struct tcf_proto *tp)
195{
196 struct cls_fl_head *head;
197
198 head = kzalloc(sizeof(*head), GFP_KERNEL);
199 if (!head)
200 return -ENOBUFS;
201
202 INIT_LIST_HEAD_RCU(&head->filters);
203 rcu_assign_pointer(tp->root, head);
204
205 return 0;
206}
207
208static void fl_destroy_filter(struct rcu_head *head)
209{
210 struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu);
211
212 tcf_exts_destroy(&f->exts);
213 kfree(f);
214}
215
3036dab6 216static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
5b33f488 217{
5b33f488 218 struct tc_cls_flower_offload offload = {0};
7091d8c7
HHZ		 219 struct net_device *dev = f->hw_dev;
220 struct tc_to_netdev *tc = &f->tc;
5b33f488 221
79685219 222 if (!tc_can_offload(dev, tp))
5b33f488
AV		 223 return;
224
225 offload.command = TC_CLSFLOWER_DESTROY;
3036dab6 226 offload.cookie = (unsigned long)f;
5b33f488 227
7091d8c7
HHZ		 228 tc->type = TC_SETUP_CLSFLOWER;
229 tc->cls_flower = &offload;
5b33f488 230
7091d8c7 231 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
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
AV		 238{
239 struct net_device *dev = tp->q->dev_queue->dev;
240 struct tc_cls_flower_offload offload = {0};
7091d8c7 241 struct tc_to_netdev *tc = &f->tc;
e8eb36cd 242 int err;
5b33f488 243
7091d8c7 244 if (!tc_can_offload(dev, tp)) {
a6e16931
HHZ		 245 if (tcf_exts_get_dev(dev, &f->exts, &f->hw_dev) ||
246 (f->hw_dev && !tc_can_offload(f->hw_dev, tp))) {
247 f->hw_dev = dev;
7091d8c7 248 return tc_skip_sw(f->flags) ? -EINVAL : 0;
a6e16931 249 }
7091d8c7
HHZ		 250 dev = f->hw_dev;
251 tc->egress_dev = true;
252 } else {
253 f->hw_dev = dev;
254 }
5b33f488
AV		 255
256 offload.command = TC_CLSFLOWER_REPLACE;
3036dab6 257 offload.cookie = (unsigned long)f;
5b33f488
AV		 258 offload.dissector = dissector;
259 offload.mask = mask;
f93bd17b 260 offload.key = &f->mkey;
3036dab6 261 offload.exts = &f->exts;
5b33f488 262
7091d8c7
HHZ		 263 tc->type = TC_SETUP_CLSFLOWER;
264 tc->cls_flower = &offload;
5b33f488 265
5a7a5555 266 err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
7091d8c7 267 tc);
e8eb36cd 268
3036dab6 269 if (tc_skip_sw(f->flags))
e8eb36cd 270 return err;
e8eb36cd 271 return 0;
5b33f488
AV		 272}
273
10cbc684
AV		 274static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
275{
10cbc684 276 struct tc_cls_flower_offload offload = {0};
7091d8c7
HHZ		 277 struct net_device *dev = f->hw_dev;
278 struct tc_to_netdev *tc = &f->tc;
10cbc684 279
79685219 280 if (!tc_can_offload(dev, tp))
10cbc684
AV		 281 return;
282
283 offload.command = TC_CLSFLOWER_STATS;
284 offload.cookie = (unsigned long)f;
285 offload.exts = &f->exts;
286
7091d8c7
HHZ		 287 tc->type = TC_SETUP_CLSFLOWER;
288 tc->cls_flower = &offload;
10cbc684 289
7091d8c7 290 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
10cbc684
AV		 291}
292
13fa876e
RD		 293static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
294{
295 list_del_rcu(&f->list);
79685219 296 if (!tc_skip_hw(f->flags))
3036dab6 297 fl_hw_destroy_filter(tp, f);
13fa876e
RD		 298 tcf_unbind_filter(tp, &f->res);
299 call_rcu(&f->rcu, fl_destroy_filter);
300}
301
d9363774
DB		 302static void fl_destroy_sleepable(struct work_struct *work)
303{
304 struct cls_fl_head *head = container_of(work, struct cls_fl_head,
305 work);
306 if (head->mask_assigned)
307 rhashtable_destroy(&head->ht);
308 kfree(head);
309 module_put(THIS_MODULE);
310}
311
312static void fl_destroy_rcu(struct rcu_head *rcu)
313{
314 struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu);
315
316 INIT_WORK(&head->work, fl_destroy_sleepable);
317 schedule_work(&head->work);
318}
319
77b9900e
JP		 320static bool fl_destroy(struct tcf_proto *tp, bool force)
321{
322 struct cls_fl_head *head = rtnl_dereference(tp->root);
323 struct cls_fl_filter *f, *next;
324
325 if (!force && !list_empty(&head->filters))
326 return false;
327
13fa876e
RD		 328 list_for_each_entry_safe(f, next, &head->filters, list)
329 __fl_delete(tp, f);
d9363774
DB		 330
331 __module_get(THIS_MODULE);
332 call_rcu(&head->rcu, fl_destroy_rcu);
2745529a 333
77b9900e
JP		 334 return true;
335}
336
337static unsigned long fl_get(struct tcf_proto *tp, u32 handle)
338{
339 struct cls_fl_head *head = rtnl_dereference(tp->root);
340 struct cls_fl_filter *f;
341
342 list_for_each_entry(f, &head->filters, list)
343 if (f->handle == handle)
344 return (unsigned long) f;
345 return 0;
346}
347
348static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
349 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
350 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
351 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
352 .len = IFNAMSIZ },
353 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
354 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
355 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
356 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
357 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
358 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
359 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
360 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
361 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
362 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
363 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
364 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
365 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
366 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
367 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
368 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 369 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
370 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 371 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
372 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
373 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 374 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
375 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
376 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
377 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
378 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
379 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
380 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
381 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
382 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 383 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
384 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
385 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
386 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 387 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
388 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
389 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
390 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 391 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
392 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
393 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
394 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 395 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
396 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 397 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
398 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
399 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
400 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
401 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
402 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
403 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
404 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 405 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
406 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
407 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
408 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
409 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
410 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
411 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
412 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
413 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
414 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
77b9900e
JP		 415};
416
417static void fl_set_key_val(struct nlattr **tb,
418 void *val, int val_type,
419 void *mask, int mask_type, int len)
420{
421 if (!tb[val_type])
422 return;
423 memcpy(val, nla_data(tb[val_type]), len);
424 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
425 memset(mask, 0xff, len);
426 else
427 memcpy(mask, nla_data(tb[mask_type]), len);
428}
429
9399ae9a
HHZ		 430static void fl_set_key_vlan(struct nlattr **tb,
431 struct flow_dissector_key_vlan *key_val,
432 struct flow_dissector_key_vlan *key_mask)
433{
434#define VLAN_PRIORITY_MASK 0x7
435
436 if (tb[TCA_FLOWER_KEY_VLAN_ID]) {
437 key_val->vlan_id =
438 nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK;
439 key_mask->vlan_id = VLAN_VID_MASK;
440 }
441 if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) {
442 key_val->vlan_priority =
443 nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) &
444 VLAN_PRIORITY_MASK;
445 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
446 }
447}
448
faa3ffce
OG		 449static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
450 u32 *dissector_key, u32 *dissector_mask,
451 u32 flower_flag_bit, u32 dissector_flag_bit)
452{
453 if (flower_mask & flower_flag_bit) {
454 *dissector_mask |= dissector_flag_bit;
455 if (flower_key & flower_flag_bit)
456 *dissector_key |= dissector_flag_bit;
457 }
458}
459
d9724772
OG		 460static int fl_set_key_flags(struct nlattr **tb,
461 u32 *flags_key, u32 *flags_mask)
faa3ffce
OG		 462{
463 u32 key, mask;
464
d9724772
OG		 465 /* mask is mandatory for flags */
466 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
467 return -EINVAL;
faa3ffce
OG		 468
469 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 470 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 471
472 *flags_key = 0;
473 *flags_mask = 0;
474
475 fl_set_key_flag(key, mask, flags_key, flags_mask,
476 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
d9724772
OG		 477
478 return 0;
faa3ffce
OG		 479}
480
77b9900e
JP		 481static int fl_set_key(struct net *net, struct nlattr **tb,
482 struct fl_flow_key *key, struct fl_flow_key *mask)
483{
9399ae9a 484 __be16 ethertype;
d9724772 485 int ret = 0;
dd3aa3b5 486#ifdef CONFIG_NET_CLS_IND
77b9900e 487 if (tb[TCA_FLOWER_INDEV]) {
dd3aa3b5 488 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]);
77b9900e
JP		 489 if (err < 0)
490 return err;
491 key->indev_ifindex = err;
492 mask->indev_ifindex = 0xffffffff;
493 }
dd3aa3b5 494#endif
77b9900e
JP		 495
496 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
497 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
498 sizeof(key->eth.dst));
499 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
500 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
501 sizeof(key->eth.src));
66530bdf 502
0b498a52 503 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 504 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
505
0b498a52
AB		 506 if (ethertype == htons(ETH_P_8021Q)) {
507 fl_set_key_vlan(tb, &key->vlan, &mask->vlan);
508 fl_set_key_val(tb, &key->basic.n_proto,
509 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
510 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
511 sizeof(key->basic.n_proto));
512 } else {
513 key->basic.n_proto = ethertype;
514 mask->basic.n_proto = cpu_to_be16(~0);
515 }
9399ae9a 516 }
66530bdf 517
77b9900e
JP		 518 if (key->basic.n_proto == htons(ETH_P_IP) ||
519 key->basic.n_proto == htons(ETH_P_IPV6)) {
520 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
521 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
522 sizeof(key->basic.ip_proto));
523 }
66530bdf
JHS		 524
525 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
526 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 527 mask->control.addr_type = ~0;
77b9900e
JP		 528 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
529 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
530 sizeof(key->ipv4.src));
531 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
532 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
533 sizeof(key->ipv4.dst));
66530bdf
JHS		 534 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
535 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 536 mask->control.addr_type = ~0;
77b9900e
JP		 537 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
538 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
539 sizeof(key->ipv6.src));
540 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
541 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
542 sizeof(key->ipv6.dst));
543 }
66530bdf 544
77b9900e
JP		 545 if (key->basic.ip_proto == IPPROTO_TCP) {
546 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 547 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 548 sizeof(key->tp.src));
549 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 550 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e
JP		 551 sizeof(key->tp.dst));
552 } else if (key->basic.ip_proto == IPPROTO_UDP) {
553 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 554 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 555 sizeof(key->tp.src));
556 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 557 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 558 sizeof(key->tp.dst));
5976c5f4
SH		 559 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
560 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
561 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
562 sizeof(key->tp.src));
563 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
564 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
565 sizeof(key->tp.dst));
7b684884
SH		 566 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
567 key->basic.ip_proto == IPPROTO_ICMP) {
568 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
569 &mask->icmp.type,
570 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
571 sizeof(key->icmp.type));
572 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
573 &mask->icmp.code,
574 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
575 sizeof(key->icmp.code));
576 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
577 key->basic.ip_proto == IPPROTO_ICMPV6) {
578 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
579 &mask->icmp.type,
580 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
581 sizeof(key->icmp.type));
582 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
583 &mask->icmp.code,
584 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
585 sizeof(key->icmp.code));
99d31326
SH		 586 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
587 key->basic.n_proto == htons(ETH_P_RARP)) {
588 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
589 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
590 sizeof(key->arp.sip));
591 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
592 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
593 sizeof(key->arp.tip));
594 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
595 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
596 sizeof(key->arp.op));
597 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
598 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
599 sizeof(key->arp.sha));
600 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
601 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
602 sizeof(key->arp.tha));
77b9900e
JP		 603 }
604
bc3103f1
AV		 605 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
606 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
607 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 608 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 609 fl_set_key_val(tb, &key->enc_ipv4.src,
610 TCA_FLOWER_KEY_ENC_IPV4_SRC,
611 &mask->enc_ipv4.src,
612 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
613 sizeof(key->enc_ipv4.src));
614 fl_set_key_val(tb, &key->enc_ipv4.dst,
615 TCA_FLOWER_KEY_ENC_IPV4_DST,
616 &mask->enc_ipv4.dst,
617 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
618 sizeof(key->enc_ipv4.dst));
619 }
620
621 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
622 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
623 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 624 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 625 fl_set_key_val(tb, &key->enc_ipv6.src,
626 TCA_FLOWER_KEY_ENC_IPV6_SRC,
627 &mask->enc_ipv6.src,
628 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
629 sizeof(key->enc_ipv6.src));
630 fl_set_key_val(tb, &key->enc_ipv6.dst,
631 TCA_FLOWER_KEY_ENC_IPV6_DST,
632 &mask->enc_ipv6.dst,
633 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
634 sizeof(key->enc_ipv6.dst));
635 }
636
637 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 638 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 639 sizeof(key->enc_key_id.keyid));
640
f4d997fd
HHZ		 641 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
642 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
643 sizeof(key->enc_tp.src));
644
645 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
646 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
647 sizeof(key->enc_tp.dst));
648
d9724772
OG		 649 if (tb[TCA_FLOWER_KEY_FLAGS])
650 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
faa3ffce 651
d9724772 652 return ret;
77b9900e
JP		 653}
654
655static bool fl_mask_eq(struct fl_flow_mask *mask1,
656 struct fl_flow_mask *mask2)
657{
658 const long *lmask1 = fl_key_get_start(&mask1->key, mask1);
659 const long *lmask2 = fl_key_get_start(&mask2->key, mask2);
660
661 return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) &&
662 !memcmp(lmask1, lmask2, fl_mask_range(mask1));
663}
664
665static const struct rhashtable_params fl_ht_params = {
666 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
667 .head_offset = offsetof(struct cls_fl_filter, ht_node),
668 .automatic_shrinking = true,
669};
670
671static int fl_init_hashtable(struct cls_fl_head *head,
672 struct fl_flow_mask *mask)
673{
674 head->ht_params = fl_ht_params;
675 head->ht_params.key_len = fl_mask_range(mask);
676 head->ht_params.key_offset += mask->range.start;
677
678 return rhashtable_init(&head->ht, &head->ht_params);
679}
680
681#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
682#define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
77b9900e 683
339ba878
HHZ		 684#define FL_KEY_IS_MASKED(mask, member) \
685 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
686 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 687
688#define FL_KEY_SET(keys, cnt, id, member) \
689 do { \
690 keys[cnt].key_id = id; \
691 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
692 cnt++; \
693 } while(0);
694
339ba878 695#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 696 do { \
339ba878 697 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 698 FL_KEY_SET(keys, cnt, id, member); \
699 } while(0);
700
701static void fl_init_dissector(struct cls_fl_head *head,
702 struct fl_flow_mask *mask)
703{
704 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
705 size_t cnt = 0;
706
42aecaa9 707 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 708 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
339ba878
HHZ		 709 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
710 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
711 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
712 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
713 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
714 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
715 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
716 FLOW_DISSECTOR_KEY_PORTS, tp);
7b684884
SH		 717 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
718 FLOW_DISSECTOR_KEY_ICMP, icmp);
99d31326
SH		 719 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
720 FLOW_DISSECTOR_KEY_ARP, arp);
9399ae9a
HHZ		 721 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
722 FLOW_DISSECTOR_KEY_VLAN, vlan);
519d1052
HHZ		 723 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
724 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
725 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
726 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
727 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
728 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
729 if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) ||
730 FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
731 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
732 enc_control);
f4d997fd
HHZ		 733 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
734 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
77b9900e
JP		 735
736 skb_flow_dissector_init(&head->dissector, keys, cnt);
737}
738
739static int fl_check_assign_mask(struct cls_fl_head *head,
740 struct fl_flow_mask *mask)
741{
742 int err;
743
744 if (head->mask_assigned) {
745 if (!fl_mask_eq(&head->mask, mask))
746 return -EINVAL;
747 else
748 return 0;
749 }
750
751 /* Mask is not assigned yet. So assign it and init hashtable
752 * according to that.
753 */
754 err = fl_init_hashtable(head, mask);
755 if (err)
756 return err;
757 memcpy(&head->mask, mask, sizeof(head->mask));
758 head->mask_assigned = true;
759
760 fl_init_dissector(head, mask);
761
762 return 0;
763}
764
765static int fl_set_parms(struct net *net, struct tcf_proto *tp,
766 struct cls_fl_filter *f, struct fl_flow_mask *mask,
767 unsigned long base, struct nlattr **tb,
768 struct nlattr *est, bool ovr)
769{
770 struct tcf_exts e;
771 int err;
772
b9a24bb7 773 err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0);
77b9900e
JP		 774 if (err < 0)
775 return err;
b9a24bb7
WC		 776 err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
777 if (err < 0)
778 goto errout;
77b9900e
JP		 779
780 if (tb[TCA_FLOWER_CLASSID]) {
781 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
782 tcf_bind_filter(tp, &f->res, base);
783 }
784
785 err = fl_set_key(net, tb, &f->key, &mask->key);
786 if (err)
787 goto errout;
788
789 fl_mask_update_range(mask);
790 fl_set_masked_key(&f->mkey, &f->key, mask);
791
792 tcf_exts_change(tp, &f->exts, &e);
793
794 return 0;
795errout:
796 tcf_exts_destroy(&e);
797 return err;
798}
799
800static u32 fl_grab_new_handle(struct tcf_proto *tp,
801 struct cls_fl_head *head)
802{
803 unsigned int i = 0x80000000;
804 u32 handle;
805
806 do {
807 if (++head->hgen == 0x7FFFFFFF)
808 head->hgen = 1;
809 } while (--i > 0 && fl_get(tp, head->hgen));
810
811 if (unlikely(i == 0)) {
812 pr_err("Insufficient number of handles\n");
813 handle = 0;
814 } else {
815 handle = head->hgen;
816 }
817
818 return handle;
819}
820
821static int fl_change(struct net *net, struct sk_buff *in_skb,
822 struct tcf_proto *tp, unsigned long base,
823 u32 handle, struct nlattr **tca,
824 unsigned long *arg, bool ovr)
825{
826 struct cls_fl_head *head = rtnl_dereference(tp->root);
827 struct cls_fl_filter *fold = (struct cls_fl_filter *) *arg;
828 struct cls_fl_filter *fnew;
829 struct nlattr *tb[TCA_FLOWER_MAX + 1];
830 struct fl_flow_mask mask = {};
831 int err;
832
833 if (!tca[TCA_OPTIONS])
834 return -EINVAL;
835
836 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy);
837 if (err < 0)
838 return err;
839
840 if (fold && handle && fold->handle != handle)
841 return -EINVAL;
842
843 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
844 if (!fnew)
845 return -ENOBUFS;
846
b9a24bb7
WC		 847 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
848 if (err < 0)
849 goto errout;
77b9900e
JP		 850
851 if (!handle) {
852 handle = fl_grab_new_handle(tp, head);
853 if (!handle) {
854 err = -EINVAL;
855 goto errout;
856 }
857 }
858 fnew->handle = handle;
859
e69985c6
AV		 860 if (tb[TCA_FLOWER_FLAGS]) {
861 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
862
863 if (!tc_flags_valid(fnew->flags)) {
864 err = -EINVAL;
865 goto errout;
866 }
867 }
5b33f488 868
77b9900e
JP		 869 err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr);
870 if (err)
871 goto errout;
872
873 err = fl_check_assign_mask(head, &mask);
874 if (err)
875 goto errout;
876
e8eb36cd 877 if (!tc_skip_sw(fnew->flags)) {
e69985c6
AV		 878 err = rhashtable_insert_fast(&head->ht, &fnew->ht_node,
879 head->ht_params);
880 if (err)
881 goto errout;
882 }
5b33f488 883
79685219
HHZ		 884 if (!tc_skip_hw(fnew->flags)) {
885 err = fl_hw_replace_filter(tp,
886 &head->dissector,
887 &mask.key,
3036dab6 888 fnew);
79685219
HHZ		 889 if (err)
890 goto errout;
891 }
5b33f488
AV		 892
893 if (fold) {
725cbb62
JP		 894 if (!tc_skip_sw(fold->flags))
895 rhashtable_remove_fast(&head->ht, &fold->ht_node,
896 head->ht_params);
79685219 897 if (!tc_skip_hw(fold->flags))
3036dab6 898 fl_hw_destroy_filter(tp, fold);
5b33f488 899 }
77b9900e
JP		 900
901 *arg = (unsigned long) fnew;
902
903 if (fold) {
ff3532f2 904 list_replace_rcu(&fold->list, &fnew->list);
77b9900e
JP		 905 tcf_unbind_filter(tp, &fold->res);
906 call_rcu(&fold->rcu, fl_destroy_filter);
907 } else {
908 list_add_tail_rcu(&fnew->list, &head->filters);
909 }
910
911 return 0;
912
913errout:
b9a24bb7 914 tcf_exts_destroy(&fnew->exts);
77b9900e
JP		 915 kfree(fnew);
916 return err;
917}
918
919static int fl_delete(struct tcf_proto *tp, unsigned long arg)
920{
921 struct cls_fl_head *head = rtnl_dereference(tp->root);
922 struct cls_fl_filter *f = (struct cls_fl_filter *) arg;
923
725cbb62
JP		 924 if (!tc_skip_sw(f->flags))
925 rhashtable_remove_fast(&head->ht, &f->ht_node,
926 head->ht_params);
13fa876e 927 __fl_delete(tp, f);
77b9900e
JP		 928 return 0;
929}
930
931static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
932{
933 struct cls_fl_head *head = rtnl_dereference(tp->root);
934 struct cls_fl_filter *f;
935
936 list_for_each_entry_rcu(f, &head->filters, list) {
937 if (arg->count < arg->skip)
938 goto skip;
939 if (arg->fn(tp, (unsigned long) f, arg) < 0) {
940 arg->stop = 1;
941 break;
942 }
943skip:
944 arg->count++;
945 }
946}
947
948static int fl_dump_key_val(struct sk_buff *skb,
949 void *val, int val_type,
950 void *mask, int mask_type, int len)
951{
952 int err;
953
954 if (!memchr_inv(mask, 0, len))
955 return 0;
956 err = nla_put(skb, val_type, len, val);
957 if (err)
958 return err;
959 if (mask_type != TCA_FLOWER_UNSPEC) {
960 err = nla_put(skb, mask_type, len, mask);
961 if (err)
962 return err;
963 }
964 return 0;
965}
966
9399ae9a
HHZ		 967static int fl_dump_key_vlan(struct sk_buff *skb,
968 struct flow_dissector_key_vlan *vlan_key,
969 struct flow_dissector_key_vlan *vlan_mask)
970{
971 int err;
972
973 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
974 return 0;
975 if (vlan_mask->vlan_id) {
976 err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID,
977 vlan_key->vlan_id);
978 if (err)
979 return err;
980 }
981 if (vlan_mask->vlan_priority) {
982 err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO,
983 vlan_key->vlan_priority);
984 if (err)
985 return err;
986 }
987 return 0;
988}
989
faa3ffce
OG		 990static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
991 u32 *flower_key, u32 *flower_mask,
992 u32 flower_flag_bit, u32 dissector_flag_bit)
993{
994 if (dissector_mask & dissector_flag_bit) {
995 *flower_mask |= flower_flag_bit;
996 if (dissector_key & dissector_flag_bit)
997 *flower_key |= flower_flag_bit;
998 }
999}
1000
1001static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1002{
1003 u32 key, mask;
1004 __be32 _key, _mask;
1005 int err;
1006
1007 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1008 return 0;
1009
1010 key = 0;
1011 mask = 0;
1012
1013 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1014 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1015
1016 _key = cpu_to_be32(key);
1017 _mask = cpu_to_be32(mask);
1018
1019 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1020 if (err)
1021 return err;
1022
1023 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1024}
1025
77b9900e
JP		 1026static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
1027 struct sk_buff *skb, struct tcmsg *t)
1028{
1029 struct cls_fl_head *head = rtnl_dereference(tp->root);
1030 struct cls_fl_filter *f = (struct cls_fl_filter *) fh;
1031 struct nlattr *nest;
1032 struct fl_flow_key *key, *mask;
1033
1034 if (!f)
1035 return skb->len;
1036
1037 t->tcm_handle = f->handle;
1038
1039 nest = nla_nest_start(skb, TCA_OPTIONS);
1040 if (!nest)
1041 goto nla_put_failure;
1042
1043 if (f->res.classid &&
1044 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
1045 goto nla_put_failure;
1046
1047 key = &f->key;
1048 mask = &head->mask.key;
1049
1050 if (mask->indev_ifindex) {
1051 struct net_device *dev;
1052
1053 dev = __dev_get_by_index(net, key->indev_ifindex);
1054 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1055 goto nla_put_failure;
1056 }
1057
79685219
HHZ		 1058 if (!tc_skip_hw(f->flags))
1059 fl_hw_update_stats(tp, f);
10cbc684 1060
77b9900e
JP		 1061 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1062 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1063 sizeof(key->eth.dst)) ||
1064 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1065 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1066 sizeof(key->eth.src)) ||
1067 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1068 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1069 sizeof(key->basic.n_proto)))
1070 goto nla_put_failure;
9399ae9a
HHZ		 1071
1072 if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan))
1073 goto nla_put_failure;
1074
77b9900e
JP		 1075 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1076 key->basic.n_proto == htons(ETH_P_IPV6)) &&
1077 fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1078 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1079 sizeof(key->basic.ip_proto)))
1080 goto nla_put_failure;
1081
c3f83241 1082 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 1083 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1084 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1085 sizeof(key->ipv4.src)) ||
1086 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1087 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1088 sizeof(key->ipv4.dst))))
1089 goto nla_put_failure;
c3f83241 1090 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 1091 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1092 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1093 sizeof(key->ipv6.src)) ||
1094 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1095 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1096 sizeof(key->ipv6.dst))))
1097 goto nla_put_failure;
1098
1099 if (key->basic.ip_proto == IPPROTO_TCP &&
1100 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1101 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1102 sizeof(key->tp.src)) ||
1103 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1104 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e
JP		 1105 sizeof(key->tp.dst))))
1106 goto nla_put_failure;
1107 else if (key->basic.ip_proto == IPPROTO_UDP &&
1108 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1109 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1110 sizeof(key->tp.src)) ||
1111 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1112 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 1113 sizeof(key->tp.dst))))
1114 goto nla_put_failure;
1115 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1116 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1117 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1118 sizeof(key->tp.src)) ||
1119 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1120 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 1121 sizeof(key->tp.dst))))
1122 goto nla_put_failure;
7b684884
SH		 1123 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1124 key->basic.ip_proto == IPPROTO_ICMP &&
1125 (fl_dump_key_val(skb, &key->icmp.type,
1126 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1127 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1128 sizeof(key->icmp.type)) ||
1129 fl_dump_key_val(skb, &key->icmp.code,
1130 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1131 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1132 sizeof(key->icmp.code))))
1133 goto nla_put_failure;
1134 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1135 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1136 (fl_dump_key_val(skb, &key->icmp.type,
1137 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1138 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1139 sizeof(key->icmp.type)) ||
1140 fl_dump_key_val(skb, &key->icmp.code,
1141 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1142 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1143 sizeof(key->icmp.code))))
1144 goto nla_put_failure;
99d31326
SH		 1145 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1146 key->basic.n_proto == htons(ETH_P_RARP)) &&
1147 (fl_dump_key_val(skb, &key->arp.sip,
1148 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1149 TCA_FLOWER_KEY_ARP_SIP_MASK,
1150 sizeof(key->arp.sip)) ||
1151 fl_dump_key_val(skb, &key->arp.tip,
1152 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1153 TCA_FLOWER_KEY_ARP_TIP_MASK,
1154 sizeof(key->arp.tip)) ||
1155 fl_dump_key_val(skb, &key->arp.op,
1156 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1157 TCA_FLOWER_KEY_ARP_OP_MASK,
1158 sizeof(key->arp.op)) ||
1159 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1160 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1161 sizeof(key->arp.sha)) ||
1162 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1163 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1164 sizeof(key->arp.tha))))
1165 goto nla_put_failure;
77b9900e 1166
bc3103f1
AV		 1167 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1168 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1169 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1170 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1171 sizeof(key->enc_ipv4.src)) ||
1172 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1173 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1174 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1175 sizeof(key->enc_ipv4.dst))))
1176 goto nla_put_failure;
1177 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1178 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1179 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1180 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1181 sizeof(key->enc_ipv6.src)) ||
1182 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1183 TCA_FLOWER_KEY_ENC_IPV6_DST,
1184 &mask->enc_ipv6.dst,
1185 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1186 sizeof(key->enc_ipv6.dst))))
1187 goto nla_put_failure;
1188
1189 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1190 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 1191 sizeof(key->enc_key_id)) ||
1192 fl_dump_key_val(skb, &key->enc_tp.src,
1193 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1194 &mask->enc_tp.src,
1195 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1196 sizeof(key->enc_tp.src)) ||
1197 fl_dump_key_val(skb, &key->enc_tp.dst,
1198 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1199 &mask->enc_tp.dst,
1200 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1201 sizeof(key->enc_tp.dst)))
bc3103f1
AV		 1202 goto nla_put_failure;
1203
faa3ffce
OG		 1204 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
1205 goto nla_put_failure;
1206
e69985c6
AV		 1207 nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags);
1208
77b9900e
JP		 1209 if (tcf_exts_dump(skb, &f->exts))
1210 goto nla_put_failure;
1211
1212 nla_nest_end(skb, nest);
1213
1214 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
1215 goto nla_put_failure;
1216
1217 return skb->len;
1218
1219nla_put_failure:
1220 nla_nest_cancel(skb, nest);
1221 return -1;
1222}
1223
1224static struct tcf_proto_ops cls_fl_ops __read_mostly = {
1225 .kind = "flower",
1226 .classify = fl_classify,
1227 .init = fl_init,
1228 .destroy = fl_destroy,
1229 .get = fl_get,
1230 .change = fl_change,
1231 .delete = fl_delete,
1232 .walk = fl_walk,
1233 .dump = fl_dump,
1234 .owner = THIS_MODULE,
1235};
1236
1237static int __init cls_fl_init(void)
1238{
1239 return register_tcf_proto_ops(&cls_fl_ops);
1240}
1241
1242static void __exit cls_fl_exit(void)
1243{
1244 unregister_tcf_proto_ops(&cls_fl_ops);
1245}
1246
1247module_init(cls_fl_init);
1248module_exit(cls_fl_exit);
1249
1250MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1251MODULE_DESCRIPTION("Flower classifier");
1252MODULE_LICENSE("GPL v2");
Linux 6.x block layer and io_uring tree(s)