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net: oki-semi: pch_gbe: use new api ethtool_{get|set}_link_ksettings
[linux-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
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;
69ca05ce 232 offload.prio = tp->prio;
3036dab6 233 offload.cookie = (unsigned long)f;
5b33f488 234
7091d8c7
HHZ		 235 tc->type = TC_SETUP_CLSFLOWER;
236 tc->cls_flower = &offload;
5b33f488 237
7091d8c7 238 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
5b33f488
AV		 239}
240
e8eb36cd
AV		 241static int fl_hw_replace_filter(struct tcf_proto *tp,
242 struct flow_dissector *dissector,
243 struct fl_flow_key *mask,
3036dab6 244 struct cls_fl_filter *f)
5b33f488
AV		 245{
246 struct net_device *dev = tp->q->dev_queue->dev;
247 struct tc_cls_flower_offload offload = {0};
7091d8c7 248 struct tc_to_netdev *tc = &f->tc;
e8eb36cd 249 int err;
5b33f488 250
7091d8c7 251 if (!tc_can_offload(dev, tp)) {
a6e16931
HHZ		 252 if (tcf_exts_get_dev(dev, &f->exts, &f->hw_dev) ||
253 (f->hw_dev && !tc_can_offload(f->hw_dev, tp))) {
254 f->hw_dev = dev;
7091d8c7 255 return tc_skip_sw(f->flags) ? -EINVAL : 0;
a6e16931 256 }
7091d8c7
HHZ		 257 dev = f->hw_dev;
258 tc->egress_dev = true;
259 } else {
260 f->hw_dev = dev;
261 }
5b33f488
AV		 262
263 offload.command = TC_CLSFLOWER_REPLACE;
69ca05ce 264 offload.prio = tp->prio;
3036dab6 265 offload.cookie = (unsigned long)f;
5b33f488
AV		 266 offload.dissector = dissector;
267 offload.mask = mask;
f93bd17b 268 offload.key = &f->mkey;
3036dab6 269 offload.exts = &f->exts;
5b33f488 270
7091d8c7
HHZ		 271 tc->type = TC_SETUP_CLSFLOWER;
272 tc->cls_flower = &offload;
5b33f488 273
5a7a5555 274 err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
7091d8c7 275 tc);
e8eb36cd 276
3036dab6 277 if (tc_skip_sw(f->flags))
e8eb36cd 278 return err;
e8eb36cd 279 return 0;
5b33f488
AV		 280}
281
10cbc684
AV		 282static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
283{
10cbc684 284 struct tc_cls_flower_offload offload = {0};
7091d8c7
HHZ		 285 struct net_device *dev = f->hw_dev;
286 struct tc_to_netdev *tc = &f->tc;
10cbc684 287
79685219 288 if (!tc_can_offload(dev, tp))
10cbc684
AV		 289 return;
290
291 offload.command = TC_CLSFLOWER_STATS;
69ca05ce 292 offload.prio = tp->prio;
10cbc684
AV		 293 offload.cookie = (unsigned long)f;
294 offload.exts = &f->exts;
295
7091d8c7
HHZ		 296 tc->type = TC_SETUP_CLSFLOWER;
297 tc->cls_flower = &offload;
10cbc684 298
7091d8c7 299 dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
10cbc684
AV		 300}
301
13fa876e
RD		 302static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
303{
304 list_del_rcu(&f->list);
79685219 305 if (!tc_skip_hw(f->flags))
3036dab6 306 fl_hw_destroy_filter(tp, f);
13fa876e
RD		 307 tcf_unbind_filter(tp, &f->res);
308 call_rcu(&f->rcu, fl_destroy_filter);
309}
310
d9363774
DB		 311static void fl_destroy_sleepable(struct work_struct *work)
312{
313 struct cls_fl_head *head = container_of(work, struct cls_fl_head,
314 work);
315 if (head->mask_assigned)
316 rhashtable_destroy(&head->ht);
317 kfree(head);
318 module_put(THIS_MODULE);
319}
320
321static void fl_destroy_rcu(struct rcu_head *rcu)
322{
323 struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu);
324
325 INIT_WORK(&head->work, fl_destroy_sleepable);
326 schedule_work(&head->work);
327}
328
77b9900e
JP		 329static bool fl_destroy(struct tcf_proto *tp, bool force)
330{
331 struct cls_fl_head *head = rtnl_dereference(tp->root);
332 struct cls_fl_filter *f, *next;
333
334 if (!force && !list_empty(&head->filters))
335 return false;
336
13fa876e
RD		 337 list_for_each_entry_safe(f, next, &head->filters, list)
338 __fl_delete(tp, f);
d9363774
DB		 339
340 __module_get(THIS_MODULE);
341 call_rcu(&head->rcu, fl_destroy_rcu);
2745529a 342
77b9900e
JP		 343 return true;
344}
345
346static unsigned long fl_get(struct tcf_proto *tp, u32 handle)
347{
348 struct cls_fl_head *head = rtnl_dereference(tp->root);
349 struct cls_fl_filter *f;
350
351 list_for_each_entry(f, &head->filters, list)
352 if (f->handle == handle)
353 return (unsigned long) f;
354 return 0;
355}
356
357static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
358 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
359 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
360 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
361 .len = IFNAMSIZ },
362 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
363 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
364 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
365 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
366 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
367 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
368 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
369 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
370 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
371 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
372 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
373 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
374 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
375 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
376 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
377 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 378 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
379 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 380 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
381 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
382 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 383 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
384 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
385 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
386 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
387 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
388 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
389 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
390 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
391 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 392 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
393 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
394 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
395 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 396 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
397 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
398 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
399 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 400 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
401 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
402 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
403 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 404 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
405 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 406 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
407 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
408 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
409 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
410 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
411 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
412 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
413 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 414 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
415 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
416 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
417 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
418 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
419 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
420 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
421 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
422 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
423 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
77b9900e
JP		 424};
425
426static void fl_set_key_val(struct nlattr **tb,
427 void *val, int val_type,
428 void *mask, int mask_type, int len)
429{
430 if (!tb[val_type])
431 return;
432 memcpy(val, nla_data(tb[val_type]), len);
433 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
434 memset(mask, 0xff, len);
435 else
436 memcpy(mask, nla_data(tb[mask_type]), len);
437}
438
9399ae9a
HHZ		 439static void fl_set_key_vlan(struct nlattr **tb,
440 struct flow_dissector_key_vlan *key_val,
441 struct flow_dissector_key_vlan *key_mask)
442{
443#define VLAN_PRIORITY_MASK 0x7
444
445 if (tb[TCA_FLOWER_KEY_VLAN_ID]) {
446 key_val->vlan_id =
447 nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK;
448 key_mask->vlan_id = VLAN_VID_MASK;
449 }
450 if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) {
451 key_val->vlan_priority =
452 nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) &
453 VLAN_PRIORITY_MASK;
454 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
455 }
456}
457
faa3ffce
OG		 458static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
459 u32 *dissector_key, u32 *dissector_mask,
460 u32 flower_flag_bit, u32 dissector_flag_bit)
461{
462 if (flower_mask & flower_flag_bit) {
463 *dissector_mask |= dissector_flag_bit;
464 if (flower_key & flower_flag_bit)
465 *dissector_key |= dissector_flag_bit;
466 }
467}
468
d9724772
OG		 469static int fl_set_key_flags(struct nlattr **tb,
470 u32 *flags_key, u32 *flags_mask)
faa3ffce
OG		 471{
472 u32 key, mask;
473
d9724772
OG		 474 /* mask is mandatory for flags */
475 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
476 return -EINVAL;
faa3ffce
OG		 477
478 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 479 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 480
481 *flags_key = 0;
482 *flags_mask = 0;
483
484 fl_set_key_flag(key, mask, flags_key, flags_mask,
485 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
d9724772
OG		 486
487 return 0;
faa3ffce
OG		 488}
489
77b9900e
JP		 490static int fl_set_key(struct net *net, struct nlattr **tb,
491 struct fl_flow_key *key, struct fl_flow_key *mask)
492{
9399ae9a 493 __be16 ethertype;
d9724772 494 int ret = 0;
dd3aa3b5 495#ifdef CONFIG_NET_CLS_IND
77b9900e 496 if (tb[TCA_FLOWER_INDEV]) {
dd3aa3b5 497 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]);
77b9900e
JP		 498 if (err < 0)
499 return err;
500 key->indev_ifindex = err;
501 mask->indev_ifindex = 0xffffffff;
502 }
dd3aa3b5 503#endif
77b9900e
JP		 504
505 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
506 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
507 sizeof(key->eth.dst));
508 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
509 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
510 sizeof(key->eth.src));
66530bdf 511
0b498a52 512 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 513 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
514
0b498a52
AB		 515 if (ethertype == htons(ETH_P_8021Q)) {
516 fl_set_key_vlan(tb, &key->vlan, &mask->vlan);
517 fl_set_key_val(tb, &key->basic.n_proto,
518 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
519 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
520 sizeof(key->basic.n_proto));
521 } else {
522 key->basic.n_proto = ethertype;
523 mask->basic.n_proto = cpu_to_be16(~0);
524 }
9399ae9a 525 }
66530bdf 526
77b9900e
JP		 527 if (key->basic.n_proto == htons(ETH_P_IP) ||
528 key->basic.n_proto == htons(ETH_P_IPV6)) {
529 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
530 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
531 sizeof(key->basic.ip_proto));
532 }
66530bdf
JHS		 533
534 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
535 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 536 mask->control.addr_type = ~0;
77b9900e
JP		 537 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
538 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
539 sizeof(key->ipv4.src));
540 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
541 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
542 sizeof(key->ipv4.dst));
66530bdf
JHS		 543 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
544 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 545 mask->control.addr_type = ~0;
77b9900e
JP		 546 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
547 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
548 sizeof(key->ipv6.src));
549 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
550 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
551 sizeof(key->ipv6.dst));
552 }
66530bdf 553
77b9900e
JP		 554 if (key->basic.ip_proto == IPPROTO_TCP) {
555 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 556 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 557 sizeof(key->tp.src));
558 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 559 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e
JP		 560 sizeof(key->tp.dst));
561 } else if (key->basic.ip_proto == IPPROTO_UDP) {
562 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 563 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 564 sizeof(key->tp.src));
565 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 566 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 567 sizeof(key->tp.dst));
5976c5f4
SH		 568 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
569 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
570 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
571 sizeof(key->tp.src));
572 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
573 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
574 sizeof(key->tp.dst));
7b684884
SH		 575 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
576 key->basic.ip_proto == IPPROTO_ICMP) {
577 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
578 &mask->icmp.type,
579 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
580 sizeof(key->icmp.type));
581 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
582 &mask->icmp.code,
583 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
584 sizeof(key->icmp.code));
585 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
586 key->basic.ip_proto == IPPROTO_ICMPV6) {
587 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
588 &mask->icmp.type,
589 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
590 sizeof(key->icmp.type));
040587af 591 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 592 &mask->icmp.code,
040587af 593 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 594 sizeof(key->icmp.code));
99d31326
SH		 595 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
596 key->basic.n_proto == htons(ETH_P_RARP)) {
597 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
598 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
599 sizeof(key->arp.sip));
600 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
601 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
602 sizeof(key->arp.tip));
603 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
604 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
605 sizeof(key->arp.op));
606 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
607 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
608 sizeof(key->arp.sha));
609 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
610 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
611 sizeof(key->arp.tha));
77b9900e
JP		 612 }
613
bc3103f1
AV		 614 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
615 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
616 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 617 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 618 fl_set_key_val(tb, &key->enc_ipv4.src,
619 TCA_FLOWER_KEY_ENC_IPV4_SRC,
620 &mask->enc_ipv4.src,
621 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
622 sizeof(key->enc_ipv4.src));
623 fl_set_key_val(tb, &key->enc_ipv4.dst,
624 TCA_FLOWER_KEY_ENC_IPV4_DST,
625 &mask->enc_ipv4.dst,
626 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
627 sizeof(key->enc_ipv4.dst));
628 }
629
630 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
631 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
632 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 633 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 634 fl_set_key_val(tb, &key->enc_ipv6.src,
635 TCA_FLOWER_KEY_ENC_IPV6_SRC,
636 &mask->enc_ipv6.src,
637 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
638 sizeof(key->enc_ipv6.src));
639 fl_set_key_val(tb, &key->enc_ipv6.dst,
640 TCA_FLOWER_KEY_ENC_IPV6_DST,
641 &mask->enc_ipv6.dst,
642 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
643 sizeof(key->enc_ipv6.dst));
644 }
645
646 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 647 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 648 sizeof(key->enc_key_id.keyid));
649
f4d997fd
HHZ		 650 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
651 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
652 sizeof(key->enc_tp.src));
653
654 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
655 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
656 sizeof(key->enc_tp.dst));
657
d9724772
OG		 658 if (tb[TCA_FLOWER_KEY_FLAGS])
659 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
faa3ffce 660
d9724772 661 return ret;
77b9900e
JP		 662}
663
664static bool fl_mask_eq(struct fl_flow_mask *mask1,
665 struct fl_flow_mask *mask2)
666{
667 const long *lmask1 = fl_key_get_start(&mask1->key, mask1);
668 const long *lmask2 = fl_key_get_start(&mask2->key, mask2);
669
670 return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) &&
671 !memcmp(lmask1, lmask2, fl_mask_range(mask1));
672}
673
674static const struct rhashtable_params fl_ht_params = {
675 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
676 .head_offset = offsetof(struct cls_fl_filter, ht_node),
677 .automatic_shrinking = true,
678};
679
680static int fl_init_hashtable(struct cls_fl_head *head,
681 struct fl_flow_mask *mask)
682{
683 head->ht_params = fl_ht_params;
684 head->ht_params.key_len = fl_mask_range(mask);
685 head->ht_params.key_offset += mask->range.start;
686
687 return rhashtable_init(&head->ht, &head->ht_params);
688}
689
690#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
691#define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
77b9900e 692
339ba878
HHZ		 693#define FL_KEY_IS_MASKED(mask, member) \
694 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
695 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 696
697#define FL_KEY_SET(keys, cnt, id, member) \
698 do { \
699 keys[cnt].key_id = id; \
700 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
701 cnt++; \
702 } while(0);
703
339ba878 704#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 705 do { \
339ba878 706 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 707 FL_KEY_SET(keys, cnt, id, member); \
708 } while(0);
709
710static void fl_init_dissector(struct cls_fl_head *head,
711 struct fl_flow_mask *mask)
712{
713 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
714 size_t cnt = 0;
715
42aecaa9 716 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 717 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
339ba878
HHZ		 718 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
719 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
720 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
721 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
722 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
723 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
724 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
725 FLOW_DISSECTOR_KEY_PORTS, tp);
7b684884
SH		 726 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
727 FLOW_DISSECTOR_KEY_ICMP, icmp);
99d31326
SH		 728 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
729 FLOW_DISSECTOR_KEY_ARP, arp);
9399ae9a
HHZ		 730 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
731 FLOW_DISSECTOR_KEY_VLAN, vlan);
519d1052
HHZ		 732 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
733 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
734 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
735 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
736 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
737 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
738 if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) ||
739 FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
740 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
741 enc_control);
f4d997fd
HHZ		 742 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
743 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
77b9900e
JP		 744
745 skb_flow_dissector_init(&head->dissector, keys, cnt);
746}
747
748static int fl_check_assign_mask(struct cls_fl_head *head,
749 struct fl_flow_mask *mask)
750{
751 int err;
752
753 if (head->mask_assigned) {
754 if (!fl_mask_eq(&head->mask, mask))
755 return -EINVAL;
756 else
757 return 0;
758 }
759
760 /* Mask is not assigned yet. So assign it and init hashtable
761 * according to that.
762 */
763 err = fl_init_hashtable(head, mask);
764 if (err)
765 return err;
766 memcpy(&head->mask, mask, sizeof(head->mask));
767 head->mask_assigned = true;
768
769 fl_init_dissector(head, mask);
770
771 return 0;
772}
773
774static int fl_set_parms(struct net *net, struct tcf_proto *tp,
775 struct cls_fl_filter *f, struct fl_flow_mask *mask,
776 unsigned long base, struct nlattr **tb,
777 struct nlattr *est, bool ovr)
778{
779 struct tcf_exts e;
780 int err;
781
b9a24bb7 782 err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0);
77b9900e
JP		 783 if (err < 0)
784 return err;
b9a24bb7
WC		 785 err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
786 if (err < 0)
787 goto errout;
77b9900e
JP		 788
789 if (tb[TCA_FLOWER_CLASSID]) {
790 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
791 tcf_bind_filter(tp, &f->res, base);
792 }
793
794 err = fl_set_key(net, tb, &f->key, &mask->key);
795 if (err)
796 goto errout;
797
798 fl_mask_update_range(mask);
799 fl_set_masked_key(&f->mkey, &f->key, mask);
800
801 tcf_exts_change(tp, &f->exts, &e);
802
803 return 0;
804errout:
805 tcf_exts_destroy(&e);
806 return err;
807}
808
809static u32 fl_grab_new_handle(struct tcf_proto *tp,
810 struct cls_fl_head *head)
811{
812 unsigned int i = 0x80000000;
813 u32 handle;
814
815 do {
816 if (++head->hgen == 0x7FFFFFFF)
817 head->hgen = 1;
818 } while (--i > 0 && fl_get(tp, head->hgen));
819
820 if (unlikely(i == 0)) {
821 pr_err("Insufficient number of handles\n");
822 handle = 0;
823 } else {
824 handle = head->hgen;
825 }
826
827 return handle;
828}
829
830static int fl_change(struct net *net, struct sk_buff *in_skb,
831 struct tcf_proto *tp, unsigned long base,
832 u32 handle, struct nlattr **tca,
833 unsigned long *arg, bool ovr)
834{
835 struct cls_fl_head *head = rtnl_dereference(tp->root);
836 struct cls_fl_filter *fold = (struct cls_fl_filter *) *arg;
837 struct cls_fl_filter *fnew;
39b7b6a6 838 struct nlattr **tb;
77b9900e
JP		 839 struct fl_flow_mask mask = {};
840 int err;
841
842 if (!tca[TCA_OPTIONS])
843 return -EINVAL;
844
39b7b6a6
AB		 845 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
846 if (!tb)
847 return -ENOBUFS;
848
77b9900e
JP		 849 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS], fl_policy);
850 if (err < 0)
39b7b6a6 851 goto errout_tb;
77b9900e 852
39b7b6a6
AB		 853 if (fold && handle && fold->handle != handle) {
854 err = -EINVAL;
855 goto errout_tb;
856 }
77b9900e
JP		 857
858 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 859 if (!fnew) {
860 err = -ENOBUFS;
861 goto errout_tb;
862 }
77b9900e 863
b9a24bb7
WC		 864 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
865 if (err < 0)
866 goto errout;
77b9900e
JP		 867
868 if (!handle) {
869 handle = fl_grab_new_handle(tp, head);
870 if (!handle) {
871 err = -EINVAL;
872 goto errout;
873 }
874 }
875 fnew->handle = handle;
876
e69985c6
AV		 877 if (tb[TCA_FLOWER_FLAGS]) {
878 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
879
880 if (!tc_flags_valid(fnew->flags)) {
881 err = -EINVAL;
882 goto errout;
883 }
884 }
5b33f488 885
77b9900e
JP		 886 err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr);
887 if (err)
888 goto errout;
889
890 err = fl_check_assign_mask(head, &mask);
891 if (err)
892 goto errout;
893
e8eb36cd 894 if (!tc_skip_sw(fnew->flags)) {
a3308d8f
PB		 895 if (!fold && fl_lookup(head, &fnew->mkey)) {
896 err = -EEXIST;
897 goto errout;
898 }
899
e69985c6
AV		 900 err = rhashtable_insert_fast(&head->ht, &fnew->ht_node,
901 head->ht_params);
902 if (err)
903 goto errout;
904 }
5b33f488 905
79685219
HHZ		 906 if (!tc_skip_hw(fnew->flags)) {
907 err = fl_hw_replace_filter(tp,
908 &head->dissector,
909 &mask.key,
3036dab6 910 fnew);
79685219
HHZ		 911 if (err)
912 goto errout;
913 }
5b33f488
AV		 914
915 if (fold) {
725cbb62
JP		 916 if (!tc_skip_sw(fold->flags))
917 rhashtable_remove_fast(&head->ht, &fold->ht_node,
918 head->ht_params);
79685219 919 if (!tc_skip_hw(fold->flags))
3036dab6 920 fl_hw_destroy_filter(tp, fold);
5b33f488 921 }
77b9900e
JP		 922
923 *arg = (unsigned long) fnew;
924
925 if (fold) {
ff3532f2 926 list_replace_rcu(&fold->list, &fnew->list);
77b9900e
JP		 927 tcf_unbind_filter(tp, &fold->res);
928 call_rcu(&fold->rcu, fl_destroy_filter);
929 } else {
930 list_add_tail_rcu(&fnew->list, &head->filters);
931 }
932
39b7b6a6 933 kfree(tb);
77b9900e
JP		 934 return 0;
935
936errout:
b9a24bb7 937 tcf_exts_destroy(&fnew->exts);
77b9900e 938 kfree(fnew);
39b7b6a6
AB		 939errout_tb:
940 kfree(tb);
77b9900e
JP		 941 return err;
942}
943
944static int fl_delete(struct tcf_proto *tp, unsigned long arg)
945{
946 struct cls_fl_head *head = rtnl_dereference(tp->root);
947 struct cls_fl_filter *f = (struct cls_fl_filter *) arg;
948
725cbb62
JP		 949 if (!tc_skip_sw(f->flags))
950 rhashtable_remove_fast(&head->ht, &f->ht_node,
951 head->ht_params);
13fa876e 952 __fl_delete(tp, f);
77b9900e
JP		 953 return 0;
954}
955
956static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
957{
958 struct cls_fl_head *head = rtnl_dereference(tp->root);
959 struct cls_fl_filter *f;
960
961 list_for_each_entry_rcu(f, &head->filters, list) {
962 if (arg->count < arg->skip)
963 goto skip;
964 if (arg->fn(tp, (unsigned long) f, arg) < 0) {
965 arg->stop = 1;
966 break;
967 }
968skip:
969 arg->count++;
970 }
971}
972
973static int fl_dump_key_val(struct sk_buff *skb,
974 void *val, int val_type,
975 void *mask, int mask_type, int len)
976{
977 int err;
978
979 if (!memchr_inv(mask, 0, len))
980 return 0;
981 err = nla_put(skb, val_type, len, val);
982 if (err)
983 return err;
984 if (mask_type != TCA_FLOWER_UNSPEC) {
985 err = nla_put(skb, mask_type, len, mask);
986 if (err)
987 return err;
988 }
989 return 0;
990}
991
9399ae9a
HHZ		 992static int fl_dump_key_vlan(struct sk_buff *skb,
993 struct flow_dissector_key_vlan *vlan_key,
994 struct flow_dissector_key_vlan *vlan_mask)
995{
996 int err;
997
998 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
999 return 0;
1000 if (vlan_mask->vlan_id) {
1001 err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID,
1002 vlan_key->vlan_id);
1003 if (err)
1004 return err;
1005 }
1006 if (vlan_mask->vlan_priority) {
1007 err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO,
1008 vlan_key->vlan_priority);
1009 if (err)
1010 return err;
1011 }
1012 return 0;
1013}
1014
faa3ffce
OG		 1015static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
1016 u32 *flower_key, u32 *flower_mask,
1017 u32 flower_flag_bit, u32 dissector_flag_bit)
1018{
1019 if (dissector_mask & dissector_flag_bit) {
1020 *flower_mask |= flower_flag_bit;
1021 if (dissector_key & dissector_flag_bit)
1022 *flower_key |= flower_flag_bit;
1023 }
1024}
1025
1026static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1027{
1028 u32 key, mask;
1029 __be32 _key, _mask;
1030 int err;
1031
1032 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1033 return 0;
1034
1035 key = 0;
1036 mask = 0;
1037
1038 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1039 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1040
1041 _key = cpu_to_be32(key);
1042 _mask = cpu_to_be32(mask);
1043
1044 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1045 if (err)
1046 return err;
1047
1048 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1049}
1050
77b9900e
JP		 1051static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
1052 struct sk_buff *skb, struct tcmsg *t)
1053{
1054 struct cls_fl_head *head = rtnl_dereference(tp->root);
1055 struct cls_fl_filter *f = (struct cls_fl_filter *) fh;
1056 struct nlattr *nest;
1057 struct fl_flow_key *key, *mask;
1058
1059 if (!f)
1060 return skb->len;
1061
1062 t->tcm_handle = f->handle;
1063
1064 nest = nla_nest_start(skb, TCA_OPTIONS);
1065 if (!nest)
1066 goto nla_put_failure;
1067
1068 if (f->res.classid &&
1069 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
1070 goto nla_put_failure;
1071
1072 key = &f->key;
1073 mask = &head->mask.key;
1074
1075 if (mask->indev_ifindex) {
1076 struct net_device *dev;
1077
1078 dev = __dev_get_by_index(net, key->indev_ifindex);
1079 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1080 goto nla_put_failure;
1081 }
1082
79685219
HHZ		 1083 if (!tc_skip_hw(f->flags))
1084 fl_hw_update_stats(tp, f);
10cbc684 1085
77b9900e
JP		 1086 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1087 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1088 sizeof(key->eth.dst)) ||
1089 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1090 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1091 sizeof(key->eth.src)) ||
1092 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1093 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1094 sizeof(key->basic.n_proto)))
1095 goto nla_put_failure;
9399ae9a
HHZ		 1096
1097 if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan))
1098 goto nla_put_failure;
1099
77b9900e
JP		 1100 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1101 key->basic.n_proto == htons(ETH_P_IPV6)) &&
1102 fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1103 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1104 sizeof(key->basic.ip_proto)))
1105 goto nla_put_failure;
1106
c3f83241 1107 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 1108 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1109 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1110 sizeof(key->ipv4.src)) ||
1111 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1112 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1113 sizeof(key->ipv4.dst))))
1114 goto nla_put_failure;
c3f83241 1115 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 1116 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1117 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1118 sizeof(key->ipv6.src)) ||
1119 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1120 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1121 sizeof(key->ipv6.dst))))
1122 goto nla_put_failure;
1123
1124 if (key->basic.ip_proto == IPPROTO_TCP &&
1125 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1126 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1127 sizeof(key->tp.src)) ||
1128 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1129 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e
JP		 1130 sizeof(key->tp.dst))))
1131 goto nla_put_failure;
1132 else if (key->basic.ip_proto == IPPROTO_UDP &&
1133 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1134 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1135 sizeof(key->tp.src)) ||
1136 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1137 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 1138 sizeof(key->tp.dst))))
1139 goto nla_put_failure;
1140 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1141 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1142 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1143 sizeof(key->tp.src)) ||
1144 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1145 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 1146 sizeof(key->tp.dst))))
1147 goto nla_put_failure;
7b684884
SH		 1148 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1149 key->basic.ip_proto == IPPROTO_ICMP &&
1150 (fl_dump_key_val(skb, &key->icmp.type,
1151 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1152 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1153 sizeof(key->icmp.type)) ||
1154 fl_dump_key_val(skb, &key->icmp.code,
1155 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1156 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1157 sizeof(key->icmp.code))))
1158 goto nla_put_failure;
1159 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1160 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1161 (fl_dump_key_val(skb, &key->icmp.type,
1162 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1163 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1164 sizeof(key->icmp.type)) ||
1165 fl_dump_key_val(skb, &key->icmp.code,
1166 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1167 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1168 sizeof(key->icmp.code))))
1169 goto nla_put_failure;
99d31326
SH		 1170 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1171 key->basic.n_proto == htons(ETH_P_RARP)) &&
1172 (fl_dump_key_val(skb, &key->arp.sip,
1173 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1174 TCA_FLOWER_KEY_ARP_SIP_MASK,
1175 sizeof(key->arp.sip)) ||
1176 fl_dump_key_val(skb, &key->arp.tip,
1177 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1178 TCA_FLOWER_KEY_ARP_TIP_MASK,
1179 sizeof(key->arp.tip)) ||
1180 fl_dump_key_val(skb, &key->arp.op,
1181 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1182 TCA_FLOWER_KEY_ARP_OP_MASK,
1183 sizeof(key->arp.op)) ||
1184 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1185 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1186 sizeof(key->arp.sha)) ||
1187 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1188 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1189 sizeof(key->arp.tha))))
1190 goto nla_put_failure;
77b9900e 1191
bc3103f1
AV		 1192 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1193 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1194 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1195 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1196 sizeof(key->enc_ipv4.src)) ||
1197 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1198 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1199 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1200 sizeof(key->enc_ipv4.dst))))
1201 goto nla_put_failure;
1202 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1203 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1204 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1205 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1206 sizeof(key->enc_ipv6.src)) ||
1207 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1208 TCA_FLOWER_KEY_ENC_IPV6_DST,
1209 &mask->enc_ipv6.dst,
1210 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1211 sizeof(key->enc_ipv6.dst))))
1212 goto nla_put_failure;
1213
1214 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1215 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 1216 sizeof(key->enc_key_id)) ||
1217 fl_dump_key_val(skb, &key->enc_tp.src,
1218 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1219 &mask->enc_tp.src,
1220 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1221 sizeof(key->enc_tp.src)) ||
1222 fl_dump_key_val(skb, &key->enc_tp.dst,
1223 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1224 &mask->enc_tp.dst,
1225 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1226 sizeof(key->enc_tp.dst)))
bc3103f1
AV		 1227 goto nla_put_failure;
1228
faa3ffce
OG		 1229 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
1230 goto nla_put_failure;
1231
e69985c6
AV		 1232 nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags);
1233
77b9900e
JP		 1234 if (tcf_exts_dump(skb, &f->exts))
1235 goto nla_put_failure;
1236
1237 nla_nest_end(skb, nest);
1238
1239 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
1240 goto nla_put_failure;
1241
1242 return skb->len;
1243
1244nla_put_failure:
1245 nla_nest_cancel(skb, nest);
1246 return -1;
1247}
1248
1249static struct tcf_proto_ops cls_fl_ops __read_mostly = {
1250 .kind = "flower",
1251 .classify = fl_classify,
1252 .init = fl_init,
1253 .destroy = fl_destroy,
1254 .get = fl_get,
1255 .change = fl_change,
1256 .delete = fl_delete,
1257 .walk = fl_walk,
1258 .dump = fl_dump,
1259 .owner = THIS_MODULE,
1260};
1261
1262static int __init cls_fl_init(void)
1263{
1264 return register_tcf_proto_ops(&cls_fl_ops);
1265}
1266
1267static void __exit cls_fl_exit(void)
1268{
1269 unregister_tcf_proto_ops(&cls_fl_ops);
1270}
1271
1272module_init(cls_fl_init);
1273module_exit(cls_fl_exit);
1274
1275MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1276MODULE_DESCRIPTION("Flower classifier");
1277MODULE_LICENSE("GPL v2");
Linux 6.x block layer and io_uring tree(s)