2 * net/sched/cls_flower.c Flower classifier
4 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
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.
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/module.h>
15 #include <linux/rhashtable.h>
16 #include <linux/workqueue.h>
18 #include <linux/if_ether.h>
19 #include <linux/in6.h>
21 #include <linux/mpls.h>
23 #include <net/sch_generic.h>
24 #include <net/pkt_cls.h>
26 #include <net/flow_dissector.h>
29 #include <net/dst_metadata.h>
33 struct flow_dissector_key_control control
;
34 struct flow_dissector_key_control enc_control
;
35 struct flow_dissector_key_basic basic
;
36 struct flow_dissector_key_eth_addrs eth
;
37 struct flow_dissector_key_vlan vlan
;
39 struct flow_dissector_key_ipv4_addrs ipv4
;
40 struct flow_dissector_key_ipv6_addrs ipv6
;
42 struct flow_dissector_key_ports tp
;
43 struct flow_dissector_key_icmp icmp
;
44 struct flow_dissector_key_arp arp
;
45 struct flow_dissector_key_keyid enc_key_id
;
47 struct flow_dissector_key_ipv4_addrs enc_ipv4
;
48 struct flow_dissector_key_ipv6_addrs enc_ipv6
;
50 struct flow_dissector_key_ports enc_tp
;
51 struct flow_dissector_key_mpls mpls
;
52 struct flow_dissector_key_tcp tcp
;
53 struct flow_dissector_key_ip ip
;
54 } __aligned(BITS_PER_LONG
/ 8); /* Ensure that we can do comparisons as longs. */
56 struct fl_flow_mask_range
{
57 unsigned short int start
;
58 unsigned short int end
;
62 struct fl_flow_key key
;
63 struct fl_flow_mask_range range
;
69 struct fl_flow_mask mask
;
70 struct flow_dissector dissector
;
72 struct list_head filters
;
73 struct rhashtable_params ht_params
;
75 struct work_struct work
;
78 struct idr handle_idr
;
81 struct cls_fl_filter
{
82 struct rhash_head ht_node
;
83 struct fl_flow_key mkey
;
85 struct tcf_result res
;
86 struct fl_flow_key key
;
87 struct list_head list
;
91 struct work_struct work
;
94 struct net_device
*hw_dev
;
97 static unsigned short int fl_mask_range(const struct fl_flow_mask
*mask
)
99 return mask
->range
.end
- mask
->range
.start
;
102 static void fl_mask_update_range(struct fl_flow_mask
*mask
)
104 const u8
*bytes
= (const u8
*) &mask
->key
;
105 size_t size
= sizeof(mask
->key
);
106 size_t i
, first
= 0, last
= size
- 1;
108 for (i
= 0; i
< sizeof(mask
->key
); i
++) {
115 mask
->range
.start
= rounddown(first
, sizeof(long));
116 mask
->range
.end
= roundup(last
+ 1, sizeof(long));
119 static void *fl_key_get_start(struct fl_flow_key
*key
,
120 const struct fl_flow_mask
*mask
)
122 return (u8
*) key
+ mask
->range
.start
;
125 static void fl_set_masked_key(struct fl_flow_key
*mkey
, struct fl_flow_key
*key
,
126 struct fl_flow_mask
*mask
)
128 const long *lkey
= fl_key_get_start(key
, mask
);
129 const long *lmask
= fl_key_get_start(&mask
->key
, mask
);
130 long *lmkey
= fl_key_get_start(mkey
, mask
);
133 for (i
= 0; i
< fl_mask_range(mask
); i
+= sizeof(long))
134 *lmkey
++ = *lkey
++ & *lmask
++;
137 static void fl_clear_masked_range(struct fl_flow_key
*key
,
138 struct fl_flow_mask
*mask
)
140 memset(fl_key_get_start(key
, mask
), 0, fl_mask_range(mask
));
143 static struct cls_fl_filter
*fl_lookup(struct cls_fl_head
*head
,
144 struct fl_flow_key
*mkey
)
146 return rhashtable_lookup_fast(&head
->ht
,
147 fl_key_get_start(mkey
, &head
->mask
),
151 static int fl_classify(struct sk_buff
*skb
, const struct tcf_proto
*tp
,
152 struct tcf_result
*res
)
154 struct cls_fl_head
*head
= rcu_dereference_bh(tp
->root
);
155 struct cls_fl_filter
*f
;
156 struct fl_flow_key skb_key
;
157 struct fl_flow_key skb_mkey
;
159 if (!atomic_read(&head
->ht
.nelems
))
162 fl_clear_masked_range(&skb_key
, &head
->mask
);
164 skb_key
.indev_ifindex
= skb
->skb_iif
;
165 /* skb_flow_dissect() does not set n_proto in case an unknown protocol,
166 * so do it rather here.
168 skb_key
.basic
.n_proto
= skb
->protocol
;
169 skb_flow_dissect(skb
, &head
->dissector
, &skb_key
, 0);
171 fl_set_masked_key(&skb_mkey
, &skb_key
, &head
->mask
);
173 f
= fl_lookup(head
, &skb_mkey
);
174 if (f
&& !tc_skip_sw(f
->flags
)) {
176 return tcf_exts_exec(skb
, &f
->exts
, res
);
181 static int fl_init(struct tcf_proto
*tp
)
183 struct cls_fl_head
*head
;
185 head
= kzalloc(sizeof(*head
), GFP_KERNEL
);
189 INIT_LIST_HEAD_RCU(&head
->filters
);
190 rcu_assign_pointer(tp
->root
, head
);
191 idr_init(&head
->handle_idr
);
196 static void __fl_destroy_filter(struct cls_fl_filter
*f
)
198 tcf_exts_destroy(&f
->exts
);
199 tcf_exts_put_net(&f
->exts
);
203 static void fl_destroy_filter_work(struct work_struct
*work
)
205 struct cls_fl_filter
*f
= container_of(work
, struct cls_fl_filter
, work
);
208 __fl_destroy_filter(f
);
212 static void fl_destroy_filter(struct rcu_head
*head
)
214 struct cls_fl_filter
*f
= container_of(head
, struct cls_fl_filter
, rcu
);
216 INIT_WORK(&f
->work
, fl_destroy_filter_work
);
217 tcf_queue_work(&f
->work
);
220 static void fl_hw_destroy_filter(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
222 struct tc_cls_flower_offload cls_flower
= {};
223 struct tcf_block
*block
= tp
->chain
->block
;
225 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
226 cls_flower
.command
= TC_CLSFLOWER_DESTROY
;
227 cls_flower
.cookie
= (unsigned long) f
;
229 tc_setup_cb_call(block
, &f
->exts
, TC_SETUP_CLSFLOWER
,
233 static int fl_hw_replace_filter(struct tcf_proto
*tp
,
234 struct flow_dissector
*dissector
,
235 struct fl_flow_key
*mask
,
236 struct cls_fl_filter
*f
)
238 struct tc_cls_flower_offload cls_flower
= {};
239 struct tcf_block
*block
= tp
->chain
->block
;
240 bool skip_sw
= tc_skip_sw(f
->flags
);
243 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
244 cls_flower
.command
= TC_CLSFLOWER_REPLACE
;
245 cls_flower
.cookie
= (unsigned long) f
;
246 cls_flower
.dissector
= dissector
;
247 cls_flower
.mask
= mask
;
248 cls_flower
.key
= &f
->mkey
;
249 cls_flower
.exts
= &f
->exts
;
250 cls_flower
.classid
= f
->res
.classid
;
252 err
= tc_setup_cb_call(block
, &f
->exts
, TC_SETUP_CLSFLOWER
,
253 &cls_flower
, skip_sw
);
255 fl_hw_destroy_filter(tp
, f
);
257 } else if (err
> 0) {
258 f
->flags
|= TCA_CLS_FLAGS_IN_HW
;
261 if (skip_sw
&& !(f
->flags
& TCA_CLS_FLAGS_IN_HW
))
267 static void fl_hw_update_stats(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
269 struct tc_cls_flower_offload cls_flower
= {};
270 struct tcf_block
*block
= tp
->chain
->block
;
272 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
273 cls_flower
.command
= TC_CLSFLOWER_STATS
;
274 cls_flower
.cookie
= (unsigned long) f
;
275 cls_flower
.exts
= &f
->exts
;
276 cls_flower
.classid
= f
->res
.classid
;
278 tc_setup_cb_call(block
, &f
->exts
, TC_SETUP_CLSFLOWER
,
282 static void __fl_delete(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
284 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
286 idr_remove_ext(&head
->handle_idr
, f
->handle
);
287 list_del_rcu(&f
->list
);
288 if (!tc_skip_hw(f
->flags
))
289 fl_hw_destroy_filter(tp
, f
);
290 tcf_unbind_filter(tp
, &f
->res
);
291 if (tcf_exts_get_net(&f
->exts
))
292 call_rcu(&f
->rcu
, fl_destroy_filter
);
294 __fl_destroy_filter(f
);
297 static void fl_destroy_sleepable(struct work_struct
*work
)
299 struct cls_fl_head
*head
= container_of(work
, struct cls_fl_head
,
301 if (head
->mask_assigned
)
302 rhashtable_destroy(&head
->ht
);
304 module_put(THIS_MODULE
);
307 static void fl_destroy_rcu(struct rcu_head
*rcu
)
309 struct cls_fl_head
*head
= container_of(rcu
, struct cls_fl_head
, rcu
);
311 INIT_WORK(&head
->work
, fl_destroy_sleepable
);
312 schedule_work(&head
->work
);
315 static void fl_destroy(struct tcf_proto
*tp
)
317 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
318 struct cls_fl_filter
*f
, *next
;
320 list_for_each_entry_safe(f
, next
, &head
->filters
, list
)
322 idr_destroy(&head
->handle_idr
);
324 __module_get(THIS_MODULE
);
325 call_rcu(&head
->rcu
, fl_destroy_rcu
);
328 static void *fl_get(struct tcf_proto
*tp
, u32 handle
)
330 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
332 return idr_find_ext(&head
->handle_idr
, handle
);
335 static const struct nla_policy fl_policy
[TCA_FLOWER_MAX
+ 1] = {
336 [TCA_FLOWER_UNSPEC
] = { .type
= NLA_UNSPEC
},
337 [TCA_FLOWER_CLASSID
] = { .type
= NLA_U32
},
338 [TCA_FLOWER_INDEV
] = { .type
= NLA_STRING
,
340 [TCA_FLOWER_KEY_ETH_DST
] = { .len
= ETH_ALEN
},
341 [TCA_FLOWER_KEY_ETH_DST_MASK
] = { .len
= ETH_ALEN
},
342 [TCA_FLOWER_KEY_ETH_SRC
] = { .len
= ETH_ALEN
},
343 [TCA_FLOWER_KEY_ETH_SRC_MASK
] = { .len
= ETH_ALEN
},
344 [TCA_FLOWER_KEY_ETH_TYPE
] = { .type
= NLA_U16
},
345 [TCA_FLOWER_KEY_IP_PROTO
] = { .type
= NLA_U8
},
346 [TCA_FLOWER_KEY_IPV4_SRC
] = { .type
= NLA_U32
},
347 [TCA_FLOWER_KEY_IPV4_SRC_MASK
] = { .type
= NLA_U32
},
348 [TCA_FLOWER_KEY_IPV4_DST
] = { .type
= NLA_U32
},
349 [TCA_FLOWER_KEY_IPV4_DST_MASK
] = { .type
= NLA_U32
},
350 [TCA_FLOWER_KEY_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
351 [TCA_FLOWER_KEY_IPV6_SRC_MASK
] = { .len
= sizeof(struct in6_addr
) },
352 [TCA_FLOWER_KEY_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
353 [TCA_FLOWER_KEY_IPV6_DST_MASK
] = { .len
= sizeof(struct in6_addr
) },
354 [TCA_FLOWER_KEY_TCP_SRC
] = { .type
= NLA_U16
},
355 [TCA_FLOWER_KEY_TCP_DST
] = { .type
= NLA_U16
},
356 [TCA_FLOWER_KEY_UDP_SRC
] = { .type
= NLA_U16
},
357 [TCA_FLOWER_KEY_UDP_DST
] = { .type
= NLA_U16
},
358 [TCA_FLOWER_KEY_VLAN_ID
] = { .type
= NLA_U16
},
359 [TCA_FLOWER_KEY_VLAN_PRIO
] = { .type
= NLA_U8
},
360 [TCA_FLOWER_KEY_VLAN_ETH_TYPE
] = { .type
= NLA_U16
},
361 [TCA_FLOWER_KEY_ENC_KEY_ID
] = { .type
= NLA_U32
},
362 [TCA_FLOWER_KEY_ENC_IPV4_SRC
] = { .type
= NLA_U32
},
363 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
] = { .type
= NLA_U32
},
364 [TCA_FLOWER_KEY_ENC_IPV4_DST
] = { .type
= NLA_U32
},
365 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
] = { .type
= NLA_U32
},
366 [TCA_FLOWER_KEY_ENC_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
367 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
] = { .len
= sizeof(struct in6_addr
) },
368 [TCA_FLOWER_KEY_ENC_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
369 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
] = { .len
= sizeof(struct in6_addr
) },
370 [TCA_FLOWER_KEY_TCP_SRC_MASK
] = { .type
= NLA_U16
},
371 [TCA_FLOWER_KEY_TCP_DST_MASK
] = { .type
= NLA_U16
},
372 [TCA_FLOWER_KEY_UDP_SRC_MASK
] = { .type
= NLA_U16
},
373 [TCA_FLOWER_KEY_UDP_DST_MASK
] = { .type
= NLA_U16
},
374 [TCA_FLOWER_KEY_SCTP_SRC_MASK
] = { .type
= NLA_U16
},
375 [TCA_FLOWER_KEY_SCTP_DST_MASK
] = { .type
= NLA_U16
},
376 [TCA_FLOWER_KEY_SCTP_SRC
] = { .type
= NLA_U16
},
377 [TCA_FLOWER_KEY_SCTP_DST
] = { .type
= NLA_U16
},
378 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
] = { .type
= NLA_U16
},
379 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
] = { .type
= NLA_U16
},
380 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT
] = { .type
= NLA_U16
},
381 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
] = { .type
= NLA_U16
},
382 [TCA_FLOWER_KEY_FLAGS
] = { .type
= NLA_U32
},
383 [TCA_FLOWER_KEY_FLAGS_MASK
] = { .type
= NLA_U32
},
384 [TCA_FLOWER_KEY_ICMPV4_TYPE
] = { .type
= NLA_U8
},
385 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
] = { .type
= NLA_U8
},
386 [TCA_FLOWER_KEY_ICMPV4_CODE
] = { .type
= NLA_U8
},
387 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK
] = { .type
= NLA_U8
},
388 [TCA_FLOWER_KEY_ICMPV6_TYPE
] = { .type
= NLA_U8
},
389 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
] = { .type
= NLA_U8
},
390 [TCA_FLOWER_KEY_ICMPV6_CODE
] = { .type
= NLA_U8
},
391 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK
] = { .type
= NLA_U8
},
392 [TCA_FLOWER_KEY_ARP_SIP
] = { .type
= NLA_U32
},
393 [TCA_FLOWER_KEY_ARP_SIP_MASK
] = { .type
= NLA_U32
},
394 [TCA_FLOWER_KEY_ARP_TIP
] = { .type
= NLA_U32
},
395 [TCA_FLOWER_KEY_ARP_TIP_MASK
] = { .type
= NLA_U32
},
396 [TCA_FLOWER_KEY_ARP_OP
] = { .type
= NLA_U8
},
397 [TCA_FLOWER_KEY_ARP_OP_MASK
] = { .type
= NLA_U8
},
398 [TCA_FLOWER_KEY_ARP_SHA
] = { .len
= ETH_ALEN
},
399 [TCA_FLOWER_KEY_ARP_SHA_MASK
] = { .len
= ETH_ALEN
},
400 [TCA_FLOWER_KEY_ARP_THA
] = { .len
= ETH_ALEN
},
401 [TCA_FLOWER_KEY_ARP_THA_MASK
] = { .len
= ETH_ALEN
},
402 [TCA_FLOWER_KEY_MPLS_TTL
] = { .type
= NLA_U8
},
403 [TCA_FLOWER_KEY_MPLS_BOS
] = { .type
= NLA_U8
},
404 [TCA_FLOWER_KEY_MPLS_TC
] = { .type
= NLA_U8
},
405 [TCA_FLOWER_KEY_MPLS_LABEL
] = { .type
= NLA_U32
},
406 [TCA_FLOWER_KEY_TCP_FLAGS
] = { .type
= NLA_U16
},
407 [TCA_FLOWER_KEY_TCP_FLAGS_MASK
] = { .type
= NLA_U16
},
408 [TCA_FLOWER_KEY_IP_TOS
] = { .type
= NLA_U8
},
409 [TCA_FLOWER_KEY_IP_TOS_MASK
] = { .type
= NLA_U8
},
410 [TCA_FLOWER_KEY_IP_TTL
] = { .type
= NLA_U8
},
411 [TCA_FLOWER_KEY_IP_TTL_MASK
] = { .type
= NLA_U8
},
414 static void fl_set_key_val(struct nlattr
**tb
,
415 void *val
, int val_type
,
416 void *mask
, int mask_type
, int len
)
420 memcpy(val
, nla_data(tb
[val_type
]), len
);
421 if (mask_type
== TCA_FLOWER_UNSPEC
|| !tb
[mask_type
])
422 memset(mask
, 0xff, len
);
424 memcpy(mask
, nla_data(tb
[mask_type
]), len
);
427 static int fl_set_key_mpls(struct nlattr
**tb
,
428 struct flow_dissector_key_mpls
*key_val
,
429 struct flow_dissector_key_mpls
*key_mask
)
431 if (tb
[TCA_FLOWER_KEY_MPLS_TTL
]) {
432 key_val
->mpls_ttl
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_TTL
]);
433 key_mask
->mpls_ttl
= MPLS_TTL_MASK
;
435 if (tb
[TCA_FLOWER_KEY_MPLS_BOS
]) {
436 u8 bos
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_BOS
]);
438 if (bos
& ~MPLS_BOS_MASK
)
440 key_val
->mpls_bos
= bos
;
441 key_mask
->mpls_bos
= MPLS_BOS_MASK
;
443 if (tb
[TCA_FLOWER_KEY_MPLS_TC
]) {
444 u8 tc
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_TC
]);
446 if (tc
& ~MPLS_TC_MASK
)
448 key_val
->mpls_tc
= tc
;
449 key_mask
->mpls_tc
= MPLS_TC_MASK
;
451 if (tb
[TCA_FLOWER_KEY_MPLS_LABEL
]) {
452 u32 label
= nla_get_u32(tb
[TCA_FLOWER_KEY_MPLS_LABEL
]);
454 if (label
& ~MPLS_LABEL_MASK
)
456 key_val
->mpls_label
= label
;
457 key_mask
->mpls_label
= MPLS_LABEL_MASK
;
462 static void fl_set_key_vlan(struct nlattr
**tb
,
463 struct flow_dissector_key_vlan
*key_val
,
464 struct flow_dissector_key_vlan
*key_mask
)
466 #define VLAN_PRIORITY_MASK 0x7
468 if (tb
[TCA_FLOWER_KEY_VLAN_ID
]) {
470 nla_get_u16(tb
[TCA_FLOWER_KEY_VLAN_ID
]) & VLAN_VID_MASK
;
471 key_mask
->vlan_id
= VLAN_VID_MASK
;
473 if (tb
[TCA_FLOWER_KEY_VLAN_PRIO
]) {
474 key_val
->vlan_priority
=
475 nla_get_u8(tb
[TCA_FLOWER_KEY_VLAN_PRIO
]) &
477 key_mask
->vlan_priority
= VLAN_PRIORITY_MASK
;
481 static void fl_set_key_flag(u32 flower_key
, u32 flower_mask
,
482 u32
*dissector_key
, u32
*dissector_mask
,
483 u32 flower_flag_bit
, u32 dissector_flag_bit
)
485 if (flower_mask
& flower_flag_bit
) {
486 *dissector_mask
|= dissector_flag_bit
;
487 if (flower_key
& flower_flag_bit
)
488 *dissector_key
|= dissector_flag_bit
;
492 static int fl_set_key_flags(struct nlattr
**tb
,
493 u32
*flags_key
, u32
*flags_mask
)
497 /* mask is mandatory for flags */
498 if (!tb
[TCA_FLOWER_KEY_FLAGS_MASK
])
501 key
= be32_to_cpu(nla_get_u32(tb
[TCA_FLOWER_KEY_FLAGS
]));
502 mask
= be32_to_cpu(nla_get_u32(tb
[TCA_FLOWER_KEY_FLAGS_MASK
]));
507 fl_set_key_flag(key
, mask
, flags_key
, flags_mask
,
508 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT
, FLOW_DIS_IS_FRAGMENT
);
513 static void fl_set_key_ip(struct nlattr
**tb
,
514 struct flow_dissector_key_ip
*key
,
515 struct flow_dissector_key_ip
*mask
)
517 fl_set_key_val(tb
, &key
->tos
, TCA_FLOWER_KEY_IP_TOS
,
518 &mask
->tos
, TCA_FLOWER_KEY_IP_TOS_MASK
,
521 fl_set_key_val(tb
, &key
->ttl
, TCA_FLOWER_KEY_IP_TTL
,
522 &mask
->ttl
, TCA_FLOWER_KEY_IP_TTL_MASK
,
526 static int fl_set_key(struct net
*net
, struct nlattr
**tb
,
527 struct fl_flow_key
*key
, struct fl_flow_key
*mask
)
531 #ifdef CONFIG_NET_CLS_IND
532 if (tb
[TCA_FLOWER_INDEV
]) {
533 int err
= tcf_change_indev(net
, tb
[TCA_FLOWER_INDEV
]);
536 key
->indev_ifindex
= err
;
537 mask
->indev_ifindex
= 0xffffffff;
541 fl_set_key_val(tb
, key
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST
,
542 mask
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST_MASK
,
543 sizeof(key
->eth
.dst
));
544 fl_set_key_val(tb
, key
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC
,
545 mask
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC_MASK
,
546 sizeof(key
->eth
.src
));
548 if (tb
[TCA_FLOWER_KEY_ETH_TYPE
]) {
549 ethertype
= nla_get_be16(tb
[TCA_FLOWER_KEY_ETH_TYPE
]);
551 if (ethertype
== htons(ETH_P_8021Q
)) {
552 fl_set_key_vlan(tb
, &key
->vlan
, &mask
->vlan
);
553 fl_set_key_val(tb
, &key
->basic
.n_proto
,
554 TCA_FLOWER_KEY_VLAN_ETH_TYPE
,
555 &mask
->basic
.n_proto
, TCA_FLOWER_UNSPEC
,
556 sizeof(key
->basic
.n_proto
));
558 key
->basic
.n_proto
= ethertype
;
559 mask
->basic
.n_proto
= cpu_to_be16(~0);
563 if (key
->basic
.n_proto
== htons(ETH_P_IP
) ||
564 key
->basic
.n_proto
== htons(ETH_P_IPV6
)) {
565 fl_set_key_val(tb
, &key
->basic
.ip_proto
, TCA_FLOWER_KEY_IP_PROTO
,
566 &mask
->basic
.ip_proto
, TCA_FLOWER_UNSPEC
,
567 sizeof(key
->basic
.ip_proto
));
568 fl_set_key_ip(tb
, &key
->ip
, &mask
->ip
);
571 if (tb
[TCA_FLOWER_KEY_IPV4_SRC
] || tb
[TCA_FLOWER_KEY_IPV4_DST
]) {
572 key
->control
.addr_type
= FLOW_DISSECTOR_KEY_IPV4_ADDRS
;
573 mask
->control
.addr_type
= ~0;
574 fl_set_key_val(tb
, &key
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC
,
575 &mask
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC_MASK
,
576 sizeof(key
->ipv4
.src
));
577 fl_set_key_val(tb
, &key
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST
,
578 &mask
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST_MASK
,
579 sizeof(key
->ipv4
.dst
));
580 } else if (tb
[TCA_FLOWER_KEY_IPV6_SRC
] || tb
[TCA_FLOWER_KEY_IPV6_DST
]) {
581 key
->control
.addr_type
= FLOW_DISSECTOR_KEY_IPV6_ADDRS
;
582 mask
->control
.addr_type
= ~0;
583 fl_set_key_val(tb
, &key
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC
,
584 &mask
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC_MASK
,
585 sizeof(key
->ipv6
.src
));
586 fl_set_key_val(tb
, &key
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST
,
587 &mask
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST_MASK
,
588 sizeof(key
->ipv6
.dst
));
591 if (key
->basic
.ip_proto
== IPPROTO_TCP
) {
592 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC
,
593 &mask
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC_MASK
,
594 sizeof(key
->tp
.src
));
595 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST
,
596 &mask
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST_MASK
,
597 sizeof(key
->tp
.dst
));
598 fl_set_key_val(tb
, &key
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS
,
599 &mask
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS_MASK
,
600 sizeof(key
->tcp
.flags
));
601 } else if (key
->basic
.ip_proto
== IPPROTO_UDP
) {
602 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC
,
603 &mask
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC_MASK
,
604 sizeof(key
->tp
.src
));
605 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST
,
606 &mask
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST_MASK
,
607 sizeof(key
->tp
.dst
));
608 } else if (key
->basic
.ip_proto
== IPPROTO_SCTP
) {
609 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC
,
610 &mask
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC_MASK
,
611 sizeof(key
->tp
.src
));
612 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST
,
613 &mask
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST_MASK
,
614 sizeof(key
->tp
.dst
));
615 } else if (key
->basic
.n_proto
== htons(ETH_P_IP
) &&
616 key
->basic
.ip_proto
== IPPROTO_ICMP
) {
617 fl_set_key_val(tb
, &key
->icmp
.type
, TCA_FLOWER_KEY_ICMPV4_TYPE
,
619 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
,
620 sizeof(key
->icmp
.type
));
621 fl_set_key_val(tb
, &key
->icmp
.code
, TCA_FLOWER_KEY_ICMPV4_CODE
,
623 TCA_FLOWER_KEY_ICMPV4_CODE_MASK
,
624 sizeof(key
->icmp
.code
));
625 } else if (key
->basic
.n_proto
== htons(ETH_P_IPV6
) &&
626 key
->basic
.ip_proto
== IPPROTO_ICMPV6
) {
627 fl_set_key_val(tb
, &key
->icmp
.type
, TCA_FLOWER_KEY_ICMPV6_TYPE
,
629 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
,
630 sizeof(key
->icmp
.type
));
631 fl_set_key_val(tb
, &key
->icmp
.code
, TCA_FLOWER_KEY_ICMPV6_CODE
,
633 TCA_FLOWER_KEY_ICMPV6_CODE_MASK
,
634 sizeof(key
->icmp
.code
));
635 } else if (key
->basic
.n_proto
== htons(ETH_P_MPLS_UC
) ||
636 key
->basic
.n_proto
== htons(ETH_P_MPLS_MC
)) {
637 ret
= fl_set_key_mpls(tb
, &key
->mpls
, &mask
->mpls
);
640 } else if (key
->basic
.n_proto
== htons(ETH_P_ARP
) ||
641 key
->basic
.n_proto
== htons(ETH_P_RARP
)) {
642 fl_set_key_val(tb
, &key
->arp
.sip
, TCA_FLOWER_KEY_ARP_SIP
,
643 &mask
->arp
.sip
, TCA_FLOWER_KEY_ARP_SIP_MASK
,
644 sizeof(key
->arp
.sip
));
645 fl_set_key_val(tb
, &key
->arp
.tip
, TCA_FLOWER_KEY_ARP_TIP
,
646 &mask
->arp
.tip
, TCA_FLOWER_KEY_ARP_TIP_MASK
,
647 sizeof(key
->arp
.tip
));
648 fl_set_key_val(tb
, &key
->arp
.op
, TCA_FLOWER_KEY_ARP_OP
,
649 &mask
->arp
.op
, TCA_FLOWER_KEY_ARP_OP_MASK
,
650 sizeof(key
->arp
.op
));
651 fl_set_key_val(tb
, key
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA
,
652 mask
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA_MASK
,
653 sizeof(key
->arp
.sha
));
654 fl_set_key_val(tb
, key
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA
,
655 mask
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA_MASK
,
656 sizeof(key
->arp
.tha
));
659 if (tb
[TCA_FLOWER_KEY_ENC_IPV4_SRC
] ||
660 tb
[TCA_FLOWER_KEY_ENC_IPV4_DST
]) {
661 key
->enc_control
.addr_type
= FLOW_DISSECTOR_KEY_IPV4_ADDRS
;
662 mask
->enc_control
.addr_type
= ~0;
663 fl_set_key_val(tb
, &key
->enc_ipv4
.src
,
664 TCA_FLOWER_KEY_ENC_IPV4_SRC
,
666 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
,
667 sizeof(key
->enc_ipv4
.src
));
668 fl_set_key_val(tb
, &key
->enc_ipv4
.dst
,
669 TCA_FLOWER_KEY_ENC_IPV4_DST
,
671 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
,
672 sizeof(key
->enc_ipv4
.dst
));
675 if (tb
[TCA_FLOWER_KEY_ENC_IPV6_SRC
] ||
676 tb
[TCA_FLOWER_KEY_ENC_IPV6_DST
]) {
677 key
->enc_control
.addr_type
= FLOW_DISSECTOR_KEY_IPV6_ADDRS
;
678 mask
->enc_control
.addr_type
= ~0;
679 fl_set_key_val(tb
, &key
->enc_ipv6
.src
,
680 TCA_FLOWER_KEY_ENC_IPV6_SRC
,
682 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
,
683 sizeof(key
->enc_ipv6
.src
));
684 fl_set_key_val(tb
, &key
->enc_ipv6
.dst
,
685 TCA_FLOWER_KEY_ENC_IPV6_DST
,
687 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
,
688 sizeof(key
->enc_ipv6
.dst
));
691 fl_set_key_val(tb
, &key
->enc_key_id
.keyid
, TCA_FLOWER_KEY_ENC_KEY_ID
,
692 &mask
->enc_key_id
.keyid
, TCA_FLOWER_UNSPEC
,
693 sizeof(key
->enc_key_id
.keyid
));
695 fl_set_key_val(tb
, &key
->enc_tp
.src
, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
,
696 &mask
->enc_tp
.src
, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
,
697 sizeof(key
->enc_tp
.src
));
699 fl_set_key_val(tb
, &key
->enc_tp
.dst
, TCA_FLOWER_KEY_ENC_UDP_DST_PORT
,
700 &mask
->enc_tp
.dst
, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
,
701 sizeof(key
->enc_tp
.dst
));
703 if (tb
[TCA_FLOWER_KEY_FLAGS
])
704 ret
= fl_set_key_flags(tb
, &key
->control
.flags
, &mask
->control
.flags
);
709 static bool fl_mask_eq(struct fl_flow_mask
*mask1
,
710 struct fl_flow_mask
*mask2
)
712 const long *lmask1
= fl_key_get_start(&mask1
->key
, mask1
);
713 const long *lmask2
= fl_key_get_start(&mask2
->key
, mask2
);
715 return !memcmp(&mask1
->range
, &mask2
->range
, sizeof(mask1
->range
)) &&
716 !memcmp(lmask1
, lmask2
, fl_mask_range(mask1
));
719 static const struct rhashtable_params fl_ht_params
= {
720 .key_offset
= offsetof(struct cls_fl_filter
, mkey
), /* base offset */
721 .head_offset
= offsetof(struct cls_fl_filter
, ht_node
),
722 .automatic_shrinking
= true,
725 static int fl_init_hashtable(struct cls_fl_head
*head
,
726 struct fl_flow_mask
*mask
)
728 head
->ht_params
= fl_ht_params
;
729 head
->ht_params
.key_len
= fl_mask_range(mask
);
730 head
->ht_params
.key_offset
+= mask
->range
.start
;
732 return rhashtable_init(&head
->ht
, &head
->ht_params
);
735 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
736 #define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
738 #define FL_KEY_IS_MASKED(mask, member) \
739 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
740 0, FL_KEY_MEMBER_SIZE(member)) \
742 #define FL_KEY_SET(keys, cnt, id, member) \
744 keys[cnt].key_id = id; \
745 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
749 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
751 if (FL_KEY_IS_MASKED(mask, member)) \
752 FL_KEY_SET(keys, cnt, id, member); \
755 static void fl_init_dissector(struct cls_fl_head
*head
,
756 struct fl_flow_mask
*mask
)
758 struct flow_dissector_key keys
[FLOW_DISSECTOR_KEY_MAX
];
761 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_CONTROL
, control
);
762 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_BASIC
, basic
);
763 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
764 FLOW_DISSECTOR_KEY_ETH_ADDRS
, eth
);
765 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
766 FLOW_DISSECTOR_KEY_IPV4_ADDRS
, ipv4
);
767 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
768 FLOW_DISSECTOR_KEY_IPV6_ADDRS
, ipv6
);
769 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
770 FLOW_DISSECTOR_KEY_PORTS
, tp
);
771 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
772 FLOW_DISSECTOR_KEY_IP
, ip
);
773 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
774 FLOW_DISSECTOR_KEY_TCP
, tcp
);
775 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
776 FLOW_DISSECTOR_KEY_ICMP
, icmp
);
777 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
778 FLOW_DISSECTOR_KEY_ARP
, arp
);
779 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
780 FLOW_DISSECTOR_KEY_MPLS
, mpls
);
781 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
782 FLOW_DISSECTOR_KEY_VLAN
, vlan
);
783 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
784 FLOW_DISSECTOR_KEY_ENC_KEYID
, enc_key_id
);
785 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
786 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS
, enc_ipv4
);
787 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
788 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS
, enc_ipv6
);
789 if (FL_KEY_IS_MASKED(&mask
->key
, enc_ipv4
) ||
790 FL_KEY_IS_MASKED(&mask
->key
, enc_ipv6
))
791 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_ENC_CONTROL
,
793 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
794 FLOW_DISSECTOR_KEY_ENC_PORTS
, enc_tp
);
796 skb_flow_dissector_init(&head
->dissector
, keys
, cnt
);
799 static int fl_check_assign_mask(struct cls_fl_head
*head
,
800 struct fl_flow_mask
*mask
)
804 if (head
->mask_assigned
) {
805 if (!fl_mask_eq(&head
->mask
, mask
))
811 /* Mask is not assigned yet. So assign it and init hashtable
814 err
= fl_init_hashtable(head
, mask
);
817 memcpy(&head
->mask
, mask
, sizeof(head
->mask
));
818 head
->mask_assigned
= true;
820 fl_init_dissector(head
, mask
);
825 static int fl_set_parms(struct net
*net
, struct tcf_proto
*tp
,
826 struct cls_fl_filter
*f
, struct fl_flow_mask
*mask
,
827 unsigned long base
, struct nlattr
**tb
,
828 struct nlattr
*est
, bool ovr
)
832 err
= tcf_exts_validate(net
, tp
, tb
, est
, &f
->exts
, ovr
);
836 if (tb
[TCA_FLOWER_CLASSID
]) {
837 f
->res
.classid
= nla_get_u32(tb
[TCA_FLOWER_CLASSID
]);
838 tcf_bind_filter(tp
, &f
->res
, base
);
841 err
= fl_set_key(net
, tb
, &f
->key
, &mask
->key
);
845 fl_mask_update_range(mask
);
846 fl_set_masked_key(&f
->mkey
, &f
->key
, mask
);
851 static int fl_change(struct net
*net
, struct sk_buff
*in_skb
,
852 struct tcf_proto
*tp
, unsigned long base
,
853 u32 handle
, struct nlattr
**tca
,
854 void **arg
, bool ovr
)
856 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
857 struct cls_fl_filter
*fold
= *arg
;
858 struct cls_fl_filter
*fnew
;
860 struct fl_flow_mask mask
= {};
861 unsigned long idr_index
;
864 if (!tca
[TCA_OPTIONS
])
867 tb
= kcalloc(TCA_FLOWER_MAX
+ 1, sizeof(struct nlattr
*), GFP_KERNEL
);
871 err
= nla_parse_nested(tb
, TCA_FLOWER_MAX
, tca
[TCA_OPTIONS
],
876 if (fold
&& handle
&& fold
->handle
!= handle
) {
881 fnew
= kzalloc(sizeof(*fnew
), GFP_KERNEL
);
887 err
= tcf_exts_init(&fnew
->exts
, TCA_FLOWER_ACT
, 0);
892 err
= idr_alloc_ext(&head
->handle_idr
, fnew
, &idr_index
,
893 1, 0x80000000, GFP_KERNEL
);
896 fnew
->handle
= idr_index
;
899 /* user specifies a handle and it doesn't exist */
900 if (handle
&& !fold
) {
901 err
= idr_alloc_ext(&head
->handle_idr
, fnew
, &idr_index
,
902 handle
, handle
+ 1, GFP_KERNEL
);
905 fnew
->handle
= idr_index
;
908 if (tb
[TCA_FLOWER_FLAGS
]) {
909 fnew
->flags
= nla_get_u32(tb
[TCA_FLOWER_FLAGS
]);
911 if (!tc_flags_valid(fnew
->flags
)) {
917 err
= fl_set_parms(net
, tp
, fnew
, &mask
, base
, tb
, tca
[TCA_RATE
], ovr
);
921 err
= fl_check_assign_mask(head
, &mask
);
925 if (!tc_skip_sw(fnew
->flags
)) {
926 if (!fold
&& fl_lookup(head
, &fnew
->mkey
)) {
931 err
= rhashtable_insert_fast(&head
->ht
, &fnew
->ht_node
,
937 if (!tc_skip_hw(fnew
->flags
)) {
938 err
= fl_hw_replace_filter(tp
,
946 if (!tc_in_hw(fnew
->flags
))
947 fnew
->flags
|= TCA_CLS_FLAGS_NOT_IN_HW
;
950 if (!tc_skip_sw(fold
->flags
))
951 rhashtable_remove_fast(&head
->ht
, &fold
->ht_node
,
953 if (!tc_skip_hw(fold
->flags
))
954 fl_hw_destroy_filter(tp
, fold
);
960 fnew
->handle
= handle
;
961 idr_replace_ext(&head
->handle_idr
, fnew
, fnew
->handle
);
962 list_replace_rcu(&fold
->list
, &fnew
->list
);
963 tcf_unbind_filter(tp
, &fold
->res
);
964 tcf_exts_get_net(&fold
->exts
);
965 call_rcu(&fold
->rcu
, fl_destroy_filter
);
967 list_add_tail_rcu(&fnew
->list
, &head
->filters
);
975 idr_remove_ext(&head
->handle_idr
, fnew
->handle
);
977 tcf_exts_destroy(&fnew
->exts
);
984 static int fl_delete(struct tcf_proto
*tp
, void *arg
, bool *last
)
986 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
987 struct cls_fl_filter
*f
= arg
;
989 if (!tc_skip_sw(f
->flags
))
990 rhashtable_remove_fast(&head
->ht
, &f
->ht_node
,
993 *last
= list_empty(&head
->filters
);
997 static void fl_walk(struct tcf_proto
*tp
, struct tcf_walker
*arg
)
999 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
1000 struct cls_fl_filter
*f
;
1002 list_for_each_entry_rcu(f
, &head
->filters
, list
) {
1003 if (arg
->count
< arg
->skip
)
1005 if (arg
->fn(tp
, f
, arg
) < 0) {
1014 static int fl_dump_key_val(struct sk_buff
*skb
,
1015 void *val
, int val_type
,
1016 void *mask
, int mask_type
, int len
)
1020 if (!memchr_inv(mask
, 0, len
))
1022 err
= nla_put(skb
, val_type
, len
, val
);
1025 if (mask_type
!= TCA_FLOWER_UNSPEC
) {
1026 err
= nla_put(skb
, mask_type
, len
, mask
);
1033 static int fl_dump_key_mpls(struct sk_buff
*skb
,
1034 struct flow_dissector_key_mpls
*mpls_key
,
1035 struct flow_dissector_key_mpls
*mpls_mask
)
1039 if (!memchr_inv(mpls_mask
, 0, sizeof(*mpls_mask
)))
1041 if (mpls_mask
->mpls_ttl
) {
1042 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_TTL
,
1043 mpls_key
->mpls_ttl
);
1047 if (mpls_mask
->mpls_tc
) {
1048 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_TC
,
1053 if (mpls_mask
->mpls_label
) {
1054 err
= nla_put_u32(skb
, TCA_FLOWER_KEY_MPLS_LABEL
,
1055 mpls_key
->mpls_label
);
1059 if (mpls_mask
->mpls_bos
) {
1060 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_BOS
,
1061 mpls_key
->mpls_bos
);
1068 static int fl_dump_key_ip(struct sk_buff
*skb
,
1069 struct flow_dissector_key_ip
*key
,
1070 struct flow_dissector_key_ip
*mask
)
1072 if (fl_dump_key_val(skb
, &key
->tos
, TCA_FLOWER_KEY_IP_TOS
, &mask
->tos
,
1073 TCA_FLOWER_KEY_IP_TOS_MASK
, sizeof(key
->tos
)) ||
1074 fl_dump_key_val(skb
, &key
->ttl
, TCA_FLOWER_KEY_IP_TTL
, &mask
->ttl
,
1075 TCA_FLOWER_KEY_IP_TTL_MASK
, sizeof(key
->ttl
)))
1081 static int fl_dump_key_vlan(struct sk_buff
*skb
,
1082 struct flow_dissector_key_vlan
*vlan_key
,
1083 struct flow_dissector_key_vlan
*vlan_mask
)
1087 if (!memchr_inv(vlan_mask
, 0, sizeof(*vlan_mask
)))
1089 if (vlan_mask
->vlan_id
) {
1090 err
= nla_put_u16(skb
, TCA_FLOWER_KEY_VLAN_ID
,
1095 if (vlan_mask
->vlan_priority
) {
1096 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_VLAN_PRIO
,
1097 vlan_key
->vlan_priority
);
1104 static void fl_get_key_flag(u32 dissector_key
, u32 dissector_mask
,
1105 u32
*flower_key
, u32
*flower_mask
,
1106 u32 flower_flag_bit
, u32 dissector_flag_bit
)
1108 if (dissector_mask
& dissector_flag_bit
) {
1109 *flower_mask
|= flower_flag_bit
;
1110 if (dissector_key
& dissector_flag_bit
)
1111 *flower_key
|= flower_flag_bit
;
1115 static int fl_dump_key_flags(struct sk_buff
*skb
, u32 flags_key
, u32 flags_mask
)
1121 if (!memchr_inv(&flags_mask
, 0, sizeof(flags_mask
)))
1127 fl_get_key_flag(flags_key
, flags_mask
, &key
, &mask
,
1128 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT
, FLOW_DIS_IS_FRAGMENT
);
1130 _key
= cpu_to_be32(key
);
1131 _mask
= cpu_to_be32(mask
);
1133 err
= nla_put(skb
, TCA_FLOWER_KEY_FLAGS
, 4, &_key
);
1137 return nla_put(skb
, TCA_FLOWER_KEY_FLAGS_MASK
, 4, &_mask
);
1140 static int fl_dump(struct net
*net
, struct tcf_proto
*tp
, void *fh
,
1141 struct sk_buff
*skb
, struct tcmsg
*t
)
1143 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
1144 struct cls_fl_filter
*f
= fh
;
1145 struct nlattr
*nest
;
1146 struct fl_flow_key
*key
, *mask
;
1151 t
->tcm_handle
= f
->handle
;
1153 nest
= nla_nest_start(skb
, TCA_OPTIONS
);
1155 goto nla_put_failure
;
1157 if (f
->res
.classid
&&
1158 nla_put_u32(skb
, TCA_FLOWER_CLASSID
, f
->res
.classid
))
1159 goto nla_put_failure
;
1162 mask
= &head
->mask
.key
;
1164 if (mask
->indev_ifindex
) {
1165 struct net_device
*dev
;
1167 dev
= __dev_get_by_index(net
, key
->indev_ifindex
);
1168 if (dev
&& nla_put_string(skb
, TCA_FLOWER_INDEV
, dev
->name
))
1169 goto nla_put_failure
;
1172 if (!tc_skip_hw(f
->flags
))
1173 fl_hw_update_stats(tp
, f
);
1175 if (fl_dump_key_val(skb
, key
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST
,
1176 mask
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST_MASK
,
1177 sizeof(key
->eth
.dst
)) ||
1178 fl_dump_key_val(skb
, key
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC
,
1179 mask
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC_MASK
,
1180 sizeof(key
->eth
.src
)) ||
1181 fl_dump_key_val(skb
, &key
->basic
.n_proto
, TCA_FLOWER_KEY_ETH_TYPE
,
1182 &mask
->basic
.n_proto
, TCA_FLOWER_UNSPEC
,
1183 sizeof(key
->basic
.n_proto
)))
1184 goto nla_put_failure
;
1186 if (fl_dump_key_mpls(skb
, &key
->mpls
, &mask
->mpls
))
1187 goto nla_put_failure
;
1189 if (fl_dump_key_vlan(skb
, &key
->vlan
, &mask
->vlan
))
1190 goto nla_put_failure
;
1192 if ((key
->basic
.n_proto
== htons(ETH_P_IP
) ||
1193 key
->basic
.n_proto
== htons(ETH_P_IPV6
)) &&
1194 (fl_dump_key_val(skb
, &key
->basic
.ip_proto
, TCA_FLOWER_KEY_IP_PROTO
,
1195 &mask
->basic
.ip_proto
, TCA_FLOWER_UNSPEC
,
1196 sizeof(key
->basic
.ip_proto
)) ||
1197 fl_dump_key_ip(skb
, &key
->ip
, &mask
->ip
)))
1198 goto nla_put_failure
;
1200 if (key
->control
.addr_type
== FLOW_DISSECTOR_KEY_IPV4_ADDRS
&&
1201 (fl_dump_key_val(skb
, &key
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC
,
1202 &mask
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC_MASK
,
1203 sizeof(key
->ipv4
.src
)) ||
1204 fl_dump_key_val(skb
, &key
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST
,
1205 &mask
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST_MASK
,
1206 sizeof(key
->ipv4
.dst
))))
1207 goto nla_put_failure
;
1208 else if (key
->control
.addr_type
== FLOW_DISSECTOR_KEY_IPV6_ADDRS
&&
1209 (fl_dump_key_val(skb
, &key
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC
,
1210 &mask
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC_MASK
,
1211 sizeof(key
->ipv6
.src
)) ||
1212 fl_dump_key_val(skb
, &key
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST
,
1213 &mask
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST_MASK
,
1214 sizeof(key
->ipv6
.dst
))))
1215 goto nla_put_failure
;
1217 if (key
->basic
.ip_proto
== IPPROTO_TCP
&&
1218 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC
,
1219 &mask
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC_MASK
,
1220 sizeof(key
->tp
.src
)) ||
1221 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST
,
1222 &mask
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST_MASK
,
1223 sizeof(key
->tp
.dst
)) ||
1224 fl_dump_key_val(skb
, &key
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS
,
1225 &mask
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS_MASK
,
1226 sizeof(key
->tcp
.flags
))))
1227 goto nla_put_failure
;
1228 else if (key
->basic
.ip_proto
== IPPROTO_UDP
&&
1229 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC
,
1230 &mask
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC_MASK
,
1231 sizeof(key
->tp
.src
)) ||
1232 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST
,
1233 &mask
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST_MASK
,
1234 sizeof(key
->tp
.dst
))))
1235 goto nla_put_failure
;
1236 else if (key
->basic
.ip_proto
== IPPROTO_SCTP
&&
1237 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC
,
1238 &mask
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC_MASK
,
1239 sizeof(key
->tp
.src
)) ||
1240 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST
,
1241 &mask
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST_MASK
,
1242 sizeof(key
->tp
.dst
))))
1243 goto nla_put_failure
;
1244 else if (key
->basic
.n_proto
== htons(ETH_P_IP
) &&
1245 key
->basic
.ip_proto
== IPPROTO_ICMP
&&
1246 (fl_dump_key_val(skb
, &key
->icmp
.type
,
1247 TCA_FLOWER_KEY_ICMPV4_TYPE
, &mask
->icmp
.type
,
1248 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
,
1249 sizeof(key
->icmp
.type
)) ||
1250 fl_dump_key_val(skb
, &key
->icmp
.code
,
1251 TCA_FLOWER_KEY_ICMPV4_CODE
, &mask
->icmp
.code
,
1252 TCA_FLOWER_KEY_ICMPV4_CODE_MASK
,
1253 sizeof(key
->icmp
.code
))))
1254 goto nla_put_failure
;
1255 else if (key
->basic
.n_proto
== htons(ETH_P_IPV6
) &&
1256 key
->basic
.ip_proto
== IPPROTO_ICMPV6
&&
1257 (fl_dump_key_val(skb
, &key
->icmp
.type
,
1258 TCA_FLOWER_KEY_ICMPV6_TYPE
, &mask
->icmp
.type
,
1259 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
,
1260 sizeof(key
->icmp
.type
)) ||
1261 fl_dump_key_val(skb
, &key
->icmp
.code
,
1262 TCA_FLOWER_KEY_ICMPV6_CODE
, &mask
->icmp
.code
,
1263 TCA_FLOWER_KEY_ICMPV6_CODE_MASK
,
1264 sizeof(key
->icmp
.code
))))
1265 goto nla_put_failure
;
1266 else if ((key
->basic
.n_proto
== htons(ETH_P_ARP
) ||
1267 key
->basic
.n_proto
== htons(ETH_P_RARP
)) &&
1268 (fl_dump_key_val(skb
, &key
->arp
.sip
,
1269 TCA_FLOWER_KEY_ARP_SIP
, &mask
->arp
.sip
,
1270 TCA_FLOWER_KEY_ARP_SIP_MASK
,
1271 sizeof(key
->arp
.sip
)) ||
1272 fl_dump_key_val(skb
, &key
->arp
.tip
,
1273 TCA_FLOWER_KEY_ARP_TIP
, &mask
->arp
.tip
,
1274 TCA_FLOWER_KEY_ARP_TIP_MASK
,
1275 sizeof(key
->arp
.tip
)) ||
1276 fl_dump_key_val(skb
, &key
->arp
.op
,
1277 TCA_FLOWER_KEY_ARP_OP
, &mask
->arp
.op
,
1278 TCA_FLOWER_KEY_ARP_OP_MASK
,
1279 sizeof(key
->arp
.op
)) ||
1280 fl_dump_key_val(skb
, key
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA
,
1281 mask
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA_MASK
,
1282 sizeof(key
->arp
.sha
)) ||
1283 fl_dump_key_val(skb
, key
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA
,
1284 mask
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA_MASK
,
1285 sizeof(key
->arp
.tha
))))
1286 goto nla_put_failure
;
1288 if (key
->enc_control
.addr_type
== FLOW_DISSECTOR_KEY_IPV4_ADDRS
&&
1289 (fl_dump_key_val(skb
, &key
->enc_ipv4
.src
,
1290 TCA_FLOWER_KEY_ENC_IPV4_SRC
, &mask
->enc_ipv4
.src
,
1291 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
,
1292 sizeof(key
->enc_ipv4
.src
)) ||
1293 fl_dump_key_val(skb
, &key
->enc_ipv4
.dst
,
1294 TCA_FLOWER_KEY_ENC_IPV4_DST
, &mask
->enc_ipv4
.dst
,
1295 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
,
1296 sizeof(key
->enc_ipv4
.dst
))))
1297 goto nla_put_failure
;
1298 else if (key
->enc_control
.addr_type
== FLOW_DISSECTOR_KEY_IPV6_ADDRS
&&
1299 (fl_dump_key_val(skb
, &key
->enc_ipv6
.src
,
1300 TCA_FLOWER_KEY_ENC_IPV6_SRC
, &mask
->enc_ipv6
.src
,
1301 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
,
1302 sizeof(key
->enc_ipv6
.src
)) ||
1303 fl_dump_key_val(skb
, &key
->enc_ipv6
.dst
,
1304 TCA_FLOWER_KEY_ENC_IPV6_DST
,
1305 &mask
->enc_ipv6
.dst
,
1306 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
,
1307 sizeof(key
->enc_ipv6
.dst
))))
1308 goto nla_put_failure
;
1310 if (fl_dump_key_val(skb
, &key
->enc_key_id
, TCA_FLOWER_KEY_ENC_KEY_ID
,
1311 &mask
->enc_key_id
, TCA_FLOWER_UNSPEC
,
1312 sizeof(key
->enc_key_id
)) ||
1313 fl_dump_key_val(skb
, &key
->enc_tp
.src
,
1314 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
,
1316 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
,
1317 sizeof(key
->enc_tp
.src
)) ||
1318 fl_dump_key_val(skb
, &key
->enc_tp
.dst
,
1319 TCA_FLOWER_KEY_ENC_UDP_DST_PORT
,
1321 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
,
1322 sizeof(key
->enc_tp
.dst
)))
1323 goto nla_put_failure
;
1325 if (fl_dump_key_flags(skb
, key
->control
.flags
, mask
->control
.flags
))
1326 goto nla_put_failure
;
1328 if (f
->flags
&& nla_put_u32(skb
, TCA_FLOWER_FLAGS
, f
->flags
))
1329 goto nla_put_failure
;
1331 if (tcf_exts_dump(skb
, &f
->exts
))
1332 goto nla_put_failure
;
1334 nla_nest_end(skb
, nest
);
1336 if (tcf_exts_dump_stats(skb
, &f
->exts
) < 0)
1337 goto nla_put_failure
;
1342 nla_nest_cancel(skb
, nest
);
1346 static void fl_bind_class(void *fh
, u32 classid
, unsigned long cl
)
1348 struct cls_fl_filter
*f
= fh
;
1350 if (f
&& f
->res
.classid
== classid
)
1354 static struct tcf_proto_ops cls_fl_ops __read_mostly
= {
1356 .classify
= fl_classify
,
1358 .destroy
= fl_destroy
,
1360 .change
= fl_change
,
1361 .delete = fl_delete
,
1364 .bind_class
= fl_bind_class
,
1365 .owner
= THIS_MODULE
,
1368 static int __init
cls_fl_init(void)
1370 return register_tcf_proto_ops(&cls_fl_ops
);
1373 static void __exit
cls_fl_exit(void)
1375 unregister_tcf_proto_ops(&cls_fl_ops
);
1378 module_init(cls_fl_init
);
1379 module_exit(cls_fl_exit
);
1381 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1382 MODULE_DESCRIPTION("Flower classifier");
1383 MODULE_LICENSE("GPL v2");