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 net_device
*hw_dev
;
94 static unsigned short int fl_mask_range(const struct fl_flow_mask
*mask
)
96 return mask
->range
.end
- mask
->range
.start
;
99 static void fl_mask_update_range(struct fl_flow_mask
*mask
)
101 const u8
*bytes
= (const u8
*) &mask
->key
;
102 size_t size
= sizeof(mask
->key
);
103 size_t i
, first
= 0, last
= size
- 1;
105 for (i
= 0; i
< sizeof(mask
->key
); i
++) {
112 mask
->range
.start
= rounddown(first
, sizeof(long));
113 mask
->range
.end
= roundup(last
+ 1, sizeof(long));
116 static void *fl_key_get_start(struct fl_flow_key
*key
,
117 const struct fl_flow_mask
*mask
)
119 return (u8
*) key
+ mask
->range
.start
;
122 static void fl_set_masked_key(struct fl_flow_key
*mkey
, struct fl_flow_key
*key
,
123 struct fl_flow_mask
*mask
)
125 const long *lkey
= fl_key_get_start(key
, mask
);
126 const long *lmask
= fl_key_get_start(&mask
->key
, mask
);
127 long *lmkey
= fl_key_get_start(mkey
, mask
);
130 for (i
= 0; i
< fl_mask_range(mask
); i
+= sizeof(long))
131 *lmkey
++ = *lkey
++ & *lmask
++;
134 static void fl_clear_masked_range(struct fl_flow_key
*key
,
135 struct fl_flow_mask
*mask
)
137 memset(fl_key_get_start(key
, mask
), 0, fl_mask_range(mask
));
140 static struct cls_fl_filter
*fl_lookup(struct cls_fl_head
*head
,
141 struct fl_flow_key
*mkey
)
143 return rhashtable_lookup_fast(&head
->ht
,
144 fl_key_get_start(mkey
, &head
->mask
),
148 static int fl_classify(struct sk_buff
*skb
, const struct tcf_proto
*tp
,
149 struct tcf_result
*res
)
151 struct cls_fl_head
*head
= rcu_dereference_bh(tp
->root
);
152 struct cls_fl_filter
*f
;
153 struct fl_flow_key skb_key
;
154 struct fl_flow_key skb_mkey
;
155 struct ip_tunnel_info
*info
;
157 if (!atomic_read(&head
->ht
.nelems
))
160 fl_clear_masked_range(&skb_key
, &head
->mask
);
162 info
= skb_tunnel_info(skb
);
164 struct ip_tunnel_key
*key
= &info
->key
;
166 switch (ip_tunnel_info_af(info
)) {
168 skb_key
.enc_control
.addr_type
=
169 FLOW_DISSECTOR_KEY_IPV4_ADDRS
;
170 skb_key
.enc_ipv4
.src
= key
->u
.ipv4
.src
;
171 skb_key
.enc_ipv4
.dst
= key
->u
.ipv4
.dst
;
174 skb_key
.enc_control
.addr_type
=
175 FLOW_DISSECTOR_KEY_IPV6_ADDRS
;
176 skb_key
.enc_ipv6
.src
= key
->u
.ipv6
.src
;
177 skb_key
.enc_ipv6
.dst
= key
->u
.ipv6
.dst
;
181 skb_key
.enc_key_id
.keyid
= tunnel_id_to_key32(key
->tun_id
);
182 skb_key
.enc_tp
.src
= key
->tp_src
;
183 skb_key
.enc_tp
.dst
= key
->tp_dst
;
186 skb_key
.indev_ifindex
= skb
->skb_iif
;
187 /* skb_flow_dissect() does not set n_proto in case an unknown protocol,
188 * so do it rather here.
190 skb_key
.basic
.n_proto
= skb
->protocol
;
191 skb_flow_dissect(skb
, &head
->dissector
, &skb_key
, 0);
193 fl_set_masked_key(&skb_mkey
, &skb_key
, &head
->mask
);
195 f
= fl_lookup(head
, &skb_mkey
);
196 if (f
&& !tc_skip_sw(f
->flags
)) {
198 return tcf_exts_exec(skb
, &f
->exts
, res
);
203 static int fl_init(struct tcf_proto
*tp
)
205 struct cls_fl_head
*head
;
207 head
= kzalloc(sizeof(*head
), GFP_KERNEL
);
211 INIT_LIST_HEAD_RCU(&head
->filters
);
212 rcu_assign_pointer(tp
->root
, head
);
213 idr_init(&head
->handle_idr
);
218 static void fl_destroy_filter(struct rcu_head
*head
)
220 struct cls_fl_filter
*f
= container_of(head
, struct cls_fl_filter
, rcu
);
222 tcf_exts_destroy(&f
->exts
);
226 static void fl_hw_destroy_filter(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
228 struct tc_cls_flower_offload cls_flower
= {};
229 struct net_device
*dev
= f
->hw_dev
;
231 if (!tc_can_offload(dev
))
234 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
235 cls_flower
.command
= TC_CLSFLOWER_DESTROY
;
236 cls_flower
.cookie
= (unsigned long) f
;
237 cls_flower
.egress_dev
= f
->hw_dev
!= tp
->q
->dev_queue
->dev
;
239 dev
->netdev_ops
->ndo_setup_tc(dev
, TC_SETUP_CLSFLOWER
, &cls_flower
);
242 static int fl_hw_replace_filter(struct tcf_proto
*tp
,
243 struct flow_dissector
*dissector
,
244 struct fl_flow_key
*mask
,
245 struct cls_fl_filter
*f
)
247 struct net_device
*dev
= tp
->q
->dev_queue
->dev
;
248 struct tc_cls_flower_offload cls_flower
= {};
251 if (!tc_can_offload(dev
)) {
252 if (tcf_exts_get_dev(dev
, &f
->exts
, &f
->hw_dev
) ||
253 (f
->hw_dev
&& !tc_can_offload(f
->hw_dev
))) {
255 return tc_skip_sw(f
->flags
) ? -EINVAL
: 0;
258 cls_flower
.egress_dev
= true;
263 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
264 cls_flower
.command
= TC_CLSFLOWER_REPLACE
;
265 cls_flower
.cookie
= (unsigned long) f
;
266 cls_flower
.dissector
= dissector
;
267 cls_flower
.mask
= mask
;
268 cls_flower
.key
= &f
->mkey
;
269 cls_flower
.exts
= &f
->exts
;
271 err
= dev
->netdev_ops
->ndo_setup_tc(dev
, TC_SETUP_CLSFLOWER
,
274 f
->flags
|= TCA_CLS_FLAGS_IN_HW
;
276 if (tc_skip_sw(f
->flags
))
281 static void fl_hw_update_stats(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
283 struct tc_cls_flower_offload cls_flower
= {};
284 struct net_device
*dev
= f
->hw_dev
;
286 if (!tc_can_offload(dev
))
289 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
290 cls_flower
.command
= TC_CLSFLOWER_STATS
;
291 cls_flower
.cookie
= (unsigned long) f
;
292 cls_flower
.exts
= &f
->exts
;
293 cls_flower
.egress_dev
= f
->hw_dev
!= tp
->q
->dev_queue
->dev
;
295 dev
->netdev_ops
->ndo_setup_tc(dev
, TC_SETUP_CLSFLOWER
,
299 static void __fl_delete(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
301 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
303 idr_remove_ext(&head
->handle_idr
, f
->handle
);
304 list_del_rcu(&f
->list
);
305 if (!tc_skip_hw(f
->flags
))
306 fl_hw_destroy_filter(tp
, f
);
307 tcf_unbind_filter(tp
, &f
->res
);
308 call_rcu(&f
->rcu
, fl_destroy_filter
);
311 static void fl_destroy_sleepable(struct work_struct
*work
)
313 struct cls_fl_head
*head
= container_of(work
, struct cls_fl_head
,
315 if (head
->mask_assigned
)
316 rhashtable_destroy(&head
->ht
);
318 module_put(THIS_MODULE
);
321 static void fl_destroy_rcu(struct rcu_head
*rcu
)
323 struct cls_fl_head
*head
= container_of(rcu
, struct cls_fl_head
, rcu
);
325 INIT_WORK(&head
->work
, fl_destroy_sleepable
);
326 schedule_work(&head
->work
);
329 static void fl_destroy(struct tcf_proto
*tp
)
331 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
332 struct cls_fl_filter
*f
, *next
;
334 list_for_each_entry_safe(f
, next
, &head
->filters
, list
)
336 idr_destroy(&head
->handle_idr
);
338 __module_get(THIS_MODULE
);
339 call_rcu(&head
->rcu
, fl_destroy_rcu
);
342 static void *fl_get(struct tcf_proto
*tp
, u32 handle
)
344 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
346 return idr_find_ext(&head
->handle_idr
, handle
);
349 static const struct nla_policy fl_policy
[TCA_FLOWER_MAX
+ 1] = {
350 [TCA_FLOWER_UNSPEC
] = { .type
= NLA_UNSPEC
},
351 [TCA_FLOWER_CLASSID
] = { .type
= NLA_U32
},
352 [TCA_FLOWER_INDEV
] = { .type
= NLA_STRING
,
354 [TCA_FLOWER_KEY_ETH_DST
] = { .len
= ETH_ALEN
},
355 [TCA_FLOWER_KEY_ETH_DST_MASK
] = { .len
= ETH_ALEN
},
356 [TCA_FLOWER_KEY_ETH_SRC
] = { .len
= ETH_ALEN
},
357 [TCA_FLOWER_KEY_ETH_SRC_MASK
] = { .len
= ETH_ALEN
},
358 [TCA_FLOWER_KEY_ETH_TYPE
] = { .type
= NLA_U16
},
359 [TCA_FLOWER_KEY_IP_PROTO
] = { .type
= NLA_U8
},
360 [TCA_FLOWER_KEY_IPV4_SRC
] = { .type
= NLA_U32
},
361 [TCA_FLOWER_KEY_IPV4_SRC_MASK
] = { .type
= NLA_U32
},
362 [TCA_FLOWER_KEY_IPV4_DST
] = { .type
= NLA_U32
},
363 [TCA_FLOWER_KEY_IPV4_DST_MASK
] = { .type
= NLA_U32
},
364 [TCA_FLOWER_KEY_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
365 [TCA_FLOWER_KEY_IPV6_SRC_MASK
] = { .len
= sizeof(struct in6_addr
) },
366 [TCA_FLOWER_KEY_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
367 [TCA_FLOWER_KEY_IPV6_DST_MASK
] = { .len
= sizeof(struct in6_addr
) },
368 [TCA_FLOWER_KEY_TCP_SRC
] = { .type
= NLA_U16
},
369 [TCA_FLOWER_KEY_TCP_DST
] = { .type
= NLA_U16
},
370 [TCA_FLOWER_KEY_UDP_SRC
] = { .type
= NLA_U16
},
371 [TCA_FLOWER_KEY_UDP_DST
] = { .type
= NLA_U16
},
372 [TCA_FLOWER_KEY_VLAN_ID
] = { .type
= NLA_U16
},
373 [TCA_FLOWER_KEY_VLAN_PRIO
] = { .type
= NLA_U8
},
374 [TCA_FLOWER_KEY_VLAN_ETH_TYPE
] = { .type
= NLA_U16
},
375 [TCA_FLOWER_KEY_ENC_KEY_ID
] = { .type
= NLA_U32
},
376 [TCA_FLOWER_KEY_ENC_IPV4_SRC
] = { .type
= NLA_U32
},
377 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
] = { .type
= NLA_U32
},
378 [TCA_FLOWER_KEY_ENC_IPV4_DST
] = { .type
= NLA_U32
},
379 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
] = { .type
= NLA_U32
},
380 [TCA_FLOWER_KEY_ENC_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
381 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
] = { .len
= sizeof(struct in6_addr
) },
382 [TCA_FLOWER_KEY_ENC_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
383 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
] = { .len
= sizeof(struct in6_addr
) },
384 [TCA_FLOWER_KEY_TCP_SRC_MASK
] = { .type
= NLA_U16
},
385 [TCA_FLOWER_KEY_TCP_DST_MASK
] = { .type
= NLA_U16
},
386 [TCA_FLOWER_KEY_UDP_SRC_MASK
] = { .type
= NLA_U16
},
387 [TCA_FLOWER_KEY_UDP_DST_MASK
] = { .type
= NLA_U16
},
388 [TCA_FLOWER_KEY_SCTP_SRC_MASK
] = { .type
= NLA_U16
},
389 [TCA_FLOWER_KEY_SCTP_DST_MASK
] = { .type
= NLA_U16
},
390 [TCA_FLOWER_KEY_SCTP_SRC
] = { .type
= NLA_U16
},
391 [TCA_FLOWER_KEY_SCTP_DST
] = { .type
= NLA_U16
},
392 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
] = { .type
= NLA_U16
},
393 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
] = { .type
= NLA_U16
},
394 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT
] = { .type
= NLA_U16
},
395 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
] = { .type
= NLA_U16
},
396 [TCA_FLOWER_KEY_FLAGS
] = { .type
= NLA_U32
},
397 [TCA_FLOWER_KEY_FLAGS_MASK
] = { .type
= NLA_U32
},
398 [TCA_FLOWER_KEY_ICMPV4_TYPE
] = { .type
= NLA_U8
},
399 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
] = { .type
= NLA_U8
},
400 [TCA_FLOWER_KEY_ICMPV4_CODE
] = { .type
= NLA_U8
},
401 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK
] = { .type
= NLA_U8
},
402 [TCA_FLOWER_KEY_ICMPV6_TYPE
] = { .type
= NLA_U8
},
403 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
] = { .type
= NLA_U8
},
404 [TCA_FLOWER_KEY_ICMPV6_CODE
] = { .type
= NLA_U8
},
405 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK
] = { .type
= NLA_U8
},
406 [TCA_FLOWER_KEY_ARP_SIP
] = { .type
= NLA_U32
},
407 [TCA_FLOWER_KEY_ARP_SIP_MASK
] = { .type
= NLA_U32
},
408 [TCA_FLOWER_KEY_ARP_TIP
] = { .type
= NLA_U32
},
409 [TCA_FLOWER_KEY_ARP_TIP_MASK
] = { .type
= NLA_U32
},
410 [TCA_FLOWER_KEY_ARP_OP
] = { .type
= NLA_U8
},
411 [TCA_FLOWER_KEY_ARP_OP_MASK
] = { .type
= NLA_U8
},
412 [TCA_FLOWER_KEY_ARP_SHA
] = { .len
= ETH_ALEN
},
413 [TCA_FLOWER_KEY_ARP_SHA_MASK
] = { .len
= ETH_ALEN
},
414 [TCA_FLOWER_KEY_ARP_THA
] = { .len
= ETH_ALEN
},
415 [TCA_FLOWER_KEY_ARP_THA_MASK
] = { .len
= ETH_ALEN
},
416 [TCA_FLOWER_KEY_MPLS_TTL
] = { .type
= NLA_U8
},
417 [TCA_FLOWER_KEY_MPLS_BOS
] = { .type
= NLA_U8
},
418 [TCA_FLOWER_KEY_MPLS_TC
] = { .type
= NLA_U8
},
419 [TCA_FLOWER_KEY_MPLS_LABEL
] = { .type
= NLA_U32
},
420 [TCA_FLOWER_KEY_TCP_FLAGS
] = { .type
= NLA_U16
},
421 [TCA_FLOWER_KEY_TCP_FLAGS_MASK
] = { .type
= NLA_U16
},
422 [TCA_FLOWER_KEY_IP_TOS
] = { .type
= NLA_U8
},
423 [TCA_FLOWER_KEY_IP_TOS_MASK
] = { .type
= NLA_U8
},
424 [TCA_FLOWER_KEY_IP_TTL
] = { .type
= NLA_U8
},
425 [TCA_FLOWER_KEY_IP_TTL_MASK
] = { .type
= NLA_U8
},
428 static void fl_set_key_val(struct nlattr
**tb
,
429 void *val
, int val_type
,
430 void *mask
, int mask_type
, int len
)
434 memcpy(val
, nla_data(tb
[val_type
]), len
);
435 if (mask_type
== TCA_FLOWER_UNSPEC
|| !tb
[mask_type
])
436 memset(mask
, 0xff, len
);
438 memcpy(mask
, nla_data(tb
[mask_type
]), len
);
441 static int fl_set_key_mpls(struct nlattr
**tb
,
442 struct flow_dissector_key_mpls
*key_val
,
443 struct flow_dissector_key_mpls
*key_mask
)
445 if (tb
[TCA_FLOWER_KEY_MPLS_TTL
]) {
446 key_val
->mpls_ttl
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_TTL
]);
447 key_mask
->mpls_ttl
= MPLS_TTL_MASK
;
449 if (tb
[TCA_FLOWER_KEY_MPLS_BOS
]) {
450 u8 bos
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_BOS
]);
452 if (bos
& ~MPLS_BOS_MASK
)
454 key_val
->mpls_bos
= bos
;
455 key_mask
->mpls_bos
= MPLS_BOS_MASK
;
457 if (tb
[TCA_FLOWER_KEY_MPLS_TC
]) {
458 u8 tc
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_TC
]);
460 if (tc
& ~MPLS_TC_MASK
)
462 key_val
->mpls_tc
= tc
;
463 key_mask
->mpls_tc
= MPLS_TC_MASK
;
465 if (tb
[TCA_FLOWER_KEY_MPLS_LABEL
]) {
466 u32 label
= nla_get_u32(tb
[TCA_FLOWER_KEY_MPLS_LABEL
]);
468 if (label
& ~MPLS_LABEL_MASK
)
470 key_val
->mpls_label
= label
;
471 key_mask
->mpls_label
= MPLS_LABEL_MASK
;
476 static void fl_set_key_vlan(struct nlattr
**tb
,
477 struct flow_dissector_key_vlan
*key_val
,
478 struct flow_dissector_key_vlan
*key_mask
)
480 #define VLAN_PRIORITY_MASK 0x7
482 if (tb
[TCA_FLOWER_KEY_VLAN_ID
]) {
484 nla_get_u16(tb
[TCA_FLOWER_KEY_VLAN_ID
]) & VLAN_VID_MASK
;
485 key_mask
->vlan_id
= VLAN_VID_MASK
;
487 if (tb
[TCA_FLOWER_KEY_VLAN_PRIO
]) {
488 key_val
->vlan_priority
=
489 nla_get_u8(tb
[TCA_FLOWER_KEY_VLAN_PRIO
]) &
491 key_mask
->vlan_priority
= VLAN_PRIORITY_MASK
;
495 static void fl_set_key_flag(u32 flower_key
, u32 flower_mask
,
496 u32
*dissector_key
, u32
*dissector_mask
,
497 u32 flower_flag_bit
, u32 dissector_flag_bit
)
499 if (flower_mask
& flower_flag_bit
) {
500 *dissector_mask
|= dissector_flag_bit
;
501 if (flower_key
& flower_flag_bit
)
502 *dissector_key
|= dissector_flag_bit
;
506 static int fl_set_key_flags(struct nlattr
**tb
,
507 u32
*flags_key
, u32
*flags_mask
)
511 /* mask is mandatory for flags */
512 if (!tb
[TCA_FLOWER_KEY_FLAGS_MASK
])
515 key
= be32_to_cpu(nla_get_u32(tb
[TCA_FLOWER_KEY_FLAGS
]));
516 mask
= be32_to_cpu(nla_get_u32(tb
[TCA_FLOWER_KEY_FLAGS_MASK
]));
521 fl_set_key_flag(key
, mask
, flags_key
, flags_mask
,
522 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT
, FLOW_DIS_IS_FRAGMENT
);
527 static void fl_set_key_ip(struct nlattr
**tb
,
528 struct flow_dissector_key_ip
*key
,
529 struct flow_dissector_key_ip
*mask
)
531 fl_set_key_val(tb
, &key
->tos
, TCA_FLOWER_KEY_IP_TOS
,
532 &mask
->tos
, TCA_FLOWER_KEY_IP_TOS_MASK
,
535 fl_set_key_val(tb
, &key
->ttl
, TCA_FLOWER_KEY_IP_TTL
,
536 &mask
->ttl
, TCA_FLOWER_KEY_IP_TTL_MASK
,
540 static int fl_set_key(struct net
*net
, struct nlattr
**tb
,
541 struct fl_flow_key
*key
, struct fl_flow_key
*mask
)
545 #ifdef CONFIG_NET_CLS_IND
546 if (tb
[TCA_FLOWER_INDEV
]) {
547 int err
= tcf_change_indev(net
, tb
[TCA_FLOWER_INDEV
]);
550 key
->indev_ifindex
= err
;
551 mask
->indev_ifindex
= 0xffffffff;
555 fl_set_key_val(tb
, key
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST
,
556 mask
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST_MASK
,
557 sizeof(key
->eth
.dst
));
558 fl_set_key_val(tb
, key
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC
,
559 mask
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC_MASK
,
560 sizeof(key
->eth
.src
));
562 if (tb
[TCA_FLOWER_KEY_ETH_TYPE
]) {
563 ethertype
= nla_get_be16(tb
[TCA_FLOWER_KEY_ETH_TYPE
]);
565 if (ethertype
== htons(ETH_P_8021Q
)) {
566 fl_set_key_vlan(tb
, &key
->vlan
, &mask
->vlan
);
567 fl_set_key_val(tb
, &key
->basic
.n_proto
,
568 TCA_FLOWER_KEY_VLAN_ETH_TYPE
,
569 &mask
->basic
.n_proto
, TCA_FLOWER_UNSPEC
,
570 sizeof(key
->basic
.n_proto
));
572 key
->basic
.n_proto
= ethertype
;
573 mask
->basic
.n_proto
= cpu_to_be16(~0);
577 if (key
->basic
.n_proto
== htons(ETH_P_IP
) ||
578 key
->basic
.n_proto
== htons(ETH_P_IPV6
)) {
579 fl_set_key_val(tb
, &key
->basic
.ip_proto
, TCA_FLOWER_KEY_IP_PROTO
,
580 &mask
->basic
.ip_proto
, TCA_FLOWER_UNSPEC
,
581 sizeof(key
->basic
.ip_proto
));
582 fl_set_key_ip(tb
, &key
->ip
, &mask
->ip
);
585 if (tb
[TCA_FLOWER_KEY_IPV4_SRC
] || tb
[TCA_FLOWER_KEY_IPV4_DST
]) {
586 key
->control
.addr_type
= FLOW_DISSECTOR_KEY_IPV4_ADDRS
;
587 mask
->control
.addr_type
= ~0;
588 fl_set_key_val(tb
, &key
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC
,
589 &mask
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC_MASK
,
590 sizeof(key
->ipv4
.src
));
591 fl_set_key_val(tb
, &key
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST
,
592 &mask
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST_MASK
,
593 sizeof(key
->ipv4
.dst
));
594 } else if (tb
[TCA_FLOWER_KEY_IPV6_SRC
] || tb
[TCA_FLOWER_KEY_IPV6_DST
]) {
595 key
->control
.addr_type
= FLOW_DISSECTOR_KEY_IPV6_ADDRS
;
596 mask
->control
.addr_type
= ~0;
597 fl_set_key_val(tb
, &key
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC
,
598 &mask
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC_MASK
,
599 sizeof(key
->ipv6
.src
));
600 fl_set_key_val(tb
, &key
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST
,
601 &mask
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST_MASK
,
602 sizeof(key
->ipv6
.dst
));
605 if (key
->basic
.ip_proto
== IPPROTO_TCP
) {
606 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC
,
607 &mask
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC_MASK
,
608 sizeof(key
->tp
.src
));
609 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST
,
610 &mask
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST_MASK
,
611 sizeof(key
->tp
.dst
));
612 fl_set_key_val(tb
, &key
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS
,
613 &mask
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS_MASK
,
614 sizeof(key
->tcp
.flags
));
615 } else if (key
->basic
.ip_proto
== IPPROTO_UDP
) {
616 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC
,
617 &mask
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC_MASK
,
618 sizeof(key
->tp
.src
));
619 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST
,
620 &mask
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST_MASK
,
621 sizeof(key
->tp
.dst
));
622 } else if (key
->basic
.ip_proto
== IPPROTO_SCTP
) {
623 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC
,
624 &mask
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC_MASK
,
625 sizeof(key
->tp
.src
));
626 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST
,
627 &mask
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST_MASK
,
628 sizeof(key
->tp
.dst
));
629 } else if (key
->basic
.n_proto
== htons(ETH_P_IP
) &&
630 key
->basic
.ip_proto
== IPPROTO_ICMP
) {
631 fl_set_key_val(tb
, &key
->icmp
.type
, TCA_FLOWER_KEY_ICMPV4_TYPE
,
633 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
,
634 sizeof(key
->icmp
.type
));
635 fl_set_key_val(tb
, &key
->icmp
.code
, TCA_FLOWER_KEY_ICMPV4_CODE
,
637 TCA_FLOWER_KEY_ICMPV4_CODE_MASK
,
638 sizeof(key
->icmp
.code
));
639 } else if (key
->basic
.n_proto
== htons(ETH_P_IPV6
) &&
640 key
->basic
.ip_proto
== IPPROTO_ICMPV6
) {
641 fl_set_key_val(tb
, &key
->icmp
.type
, TCA_FLOWER_KEY_ICMPV6_TYPE
,
643 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
,
644 sizeof(key
->icmp
.type
));
645 fl_set_key_val(tb
, &key
->icmp
.code
, TCA_FLOWER_KEY_ICMPV6_CODE
,
647 TCA_FLOWER_KEY_ICMPV6_CODE_MASK
,
648 sizeof(key
->icmp
.code
));
649 } else if (key
->basic
.n_proto
== htons(ETH_P_MPLS_UC
) ||
650 key
->basic
.n_proto
== htons(ETH_P_MPLS_MC
)) {
651 ret
= fl_set_key_mpls(tb
, &key
->mpls
, &mask
->mpls
);
654 } else if (key
->basic
.n_proto
== htons(ETH_P_ARP
) ||
655 key
->basic
.n_proto
== htons(ETH_P_RARP
)) {
656 fl_set_key_val(tb
, &key
->arp
.sip
, TCA_FLOWER_KEY_ARP_SIP
,
657 &mask
->arp
.sip
, TCA_FLOWER_KEY_ARP_SIP_MASK
,
658 sizeof(key
->arp
.sip
));
659 fl_set_key_val(tb
, &key
->arp
.tip
, TCA_FLOWER_KEY_ARP_TIP
,
660 &mask
->arp
.tip
, TCA_FLOWER_KEY_ARP_TIP_MASK
,
661 sizeof(key
->arp
.tip
));
662 fl_set_key_val(tb
, &key
->arp
.op
, TCA_FLOWER_KEY_ARP_OP
,
663 &mask
->arp
.op
, TCA_FLOWER_KEY_ARP_OP_MASK
,
664 sizeof(key
->arp
.op
));
665 fl_set_key_val(tb
, key
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA
,
666 mask
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA_MASK
,
667 sizeof(key
->arp
.sha
));
668 fl_set_key_val(tb
, key
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA
,
669 mask
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA_MASK
,
670 sizeof(key
->arp
.tha
));
673 if (tb
[TCA_FLOWER_KEY_ENC_IPV4_SRC
] ||
674 tb
[TCA_FLOWER_KEY_ENC_IPV4_DST
]) {
675 key
->enc_control
.addr_type
= FLOW_DISSECTOR_KEY_IPV4_ADDRS
;
676 mask
->enc_control
.addr_type
= ~0;
677 fl_set_key_val(tb
, &key
->enc_ipv4
.src
,
678 TCA_FLOWER_KEY_ENC_IPV4_SRC
,
680 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
,
681 sizeof(key
->enc_ipv4
.src
));
682 fl_set_key_val(tb
, &key
->enc_ipv4
.dst
,
683 TCA_FLOWER_KEY_ENC_IPV4_DST
,
685 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
,
686 sizeof(key
->enc_ipv4
.dst
));
689 if (tb
[TCA_FLOWER_KEY_ENC_IPV6_SRC
] ||
690 tb
[TCA_FLOWER_KEY_ENC_IPV6_DST
]) {
691 key
->enc_control
.addr_type
= FLOW_DISSECTOR_KEY_IPV6_ADDRS
;
692 mask
->enc_control
.addr_type
= ~0;
693 fl_set_key_val(tb
, &key
->enc_ipv6
.src
,
694 TCA_FLOWER_KEY_ENC_IPV6_SRC
,
696 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
,
697 sizeof(key
->enc_ipv6
.src
));
698 fl_set_key_val(tb
, &key
->enc_ipv6
.dst
,
699 TCA_FLOWER_KEY_ENC_IPV6_DST
,
701 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
,
702 sizeof(key
->enc_ipv6
.dst
));
705 fl_set_key_val(tb
, &key
->enc_key_id
.keyid
, TCA_FLOWER_KEY_ENC_KEY_ID
,
706 &mask
->enc_key_id
.keyid
, TCA_FLOWER_UNSPEC
,
707 sizeof(key
->enc_key_id
.keyid
));
709 fl_set_key_val(tb
, &key
->enc_tp
.src
, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
,
710 &mask
->enc_tp
.src
, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
,
711 sizeof(key
->enc_tp
.src
));
713 fl_set_key_val(tb
, &key
->enc_tp
.dst
, TCA_FLOWER_KEY_ENC_UDP_DST_PORT
,
714 &mask
->enc_tp
.dst
, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
,
715 sizeof(key
->enc_tp
.dst
));
717 if (tb
[TCA_FLOWER_KEY_FLAGS
])
718 ret
= fl_set_key_flags(tb
, &key
->control
.flags
, &mask
->control
.flags
);
723 static bool fl_mask_eq(struct fl_flow_mask
*mask1
,
724 struct fl_flow_mask
*mask2
)
726 const long *lmask1
= fl_key_get_start(&mask1
->key
, mask1
);
727 const long *lmask2
= fl_key_get_start(&mask2
->key
, mask2
);
729 return !memcmp(&mask1
->range
, &mask2
->range
, sizeof(mask1
->range
)) &&
730 !memcmp(lmask1
, lmask2
, fl_mask_range(mask1
));
733 static const struct rhashtable_params fl_ht_params
= {
734 .key_offset
= offsetof(struct cls_fl_filter
, mkey
), /* base offset */
735 .head_offset
= offsetof(struct cls_fl_filter
, ht_node
),
736 .automatic_shrinking
= true,
739 static int fl_init_hashtable(struct cls_fl_head
*head
,
740 struct fl_flow_mask
*mask
)
742 head
->ht_params
= fl_ht_params
;
743 head
->ht_params
.key_len
= fl_mask_range(mask
);
744 head
->ht_params
.key_offset
+= mask
->range
.start
;
746 return rhashtable_init(&head
->ht
, &head
->ht_params
);
749 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
750 #define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
752 #define FL_KEY_IS_MASKED(mask, member) \
753 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
754 0, FL_KEY_MEMBER_SIZE(member)) \
756 #define FL_KEY_SET(keys, cnt, id, member) \
758 keys[cnt].key_id = id; \
759 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
763 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
765 if (FL_KEY_IS_MASKED(mask, member)) \
766 FL_KEY_SET(keys, cnt, id, member); \
769 static void fl_init_dissector(struct cls_fl_head
*head
,
770 struct fl_flow_mask
*mask
)
772 struct flow_dissector_key keys
[FLOW_DISSECTOR_KEY_MAX
];
775 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_CONTROL
, control
);
776 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_BASIC
, basic
);
777 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
778 FLOW_DISSECTOR_KEY_ETH_ADDRS
, eth
);
779 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
780 FLOW_DISSECTOR_KEY_IPV4_ADDRS
, ipv4
);
781 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
782 FLOW_DISSECTOR_KEY_IPV6_ADDRS
, ipv6
);
783 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
784 FLOW_DISSECTOR_KEY_PORTS
, tp
);
785 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
786 FLOW_DISSECTOR_KEY_IP
, ip
);
787 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
788 FLOW_DISSECTOR_KEY_TCP
, tcp
);
789 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
790 FLOW_DISSECTOR_KEY_ICMP
, icmp
);
791 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
792 FLOW_DISSECTOR_KEY_ARP
, arp
);
793 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
794 FLOW_DISSECTOR_KEY_MPLS
, mpls
);
795 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
796 FLOW_DISSECTOR_KEY_VLAN
, vlan
);
797 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
798 FLOW_DISSECTOR_KEY_ENC_KEYID
, enc_key_id
);
799 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
800 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS
, enc_ipv4
);
801 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
802 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS
, enc_ipv6
);
803 if (FL_KEY_IS_MASKED(&mask
->key
, enc_ipv4
) ||
804 FL_KEY_IS_MASKED(&mask
->key
, enc_ipv6
))
805 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_ENC_CONTROL
,
807 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
808 FLOW_DISSECTOR_KEY_ENC_PORTS
, enc_tp
);
810 skb_flow_dissector_init(&head
->dissector
, keys
, cnt
);
813 static int fl_check_assign_mask(struct cls_fl_head
*head
,
814 struct fl_flow_mask
*mask
)
818 if (head
->mask_assigned
) {
819 if (!fl_mask_eq(&head
->mask
, mask
))
825 /* Mask is not assigned yet. So assign it and init hashtable
828 err
= fl_init_hashtable(head
, mask
);
831 memcpy(&head
->mask
, mask
, sizeof(head
->mask
));
832 head
->mask_assigned
= true;
834 fl_init_dissector(head
, mask
);
839 static int fl_set_parms(struct net
*net
, struct tcf_proto
*tp
,
840 struct cls_fl_filter
*f
, struct fl_flow_mask
*mask
,
841 unsigned long base
, struct nlattr
**tb
,
842 struct nlattr
*est
, bool ovr
)
846 err
= tcf_exts_validate(net
, tp
, tb
, est
, &f
->exts
, ovr
);
850 if (tb
[TCA_FLOWER_CLASSID
]) {
851 f
->res
.classid
= nla_get_u32(tb
[TCA_FLOWER_CLASSID
]);
852 tcf_bind_filter(tp
, &f
->res
, base
);
855 err
= fl_set_key(net
, tb
, &f
->key
, &mask
->key
);
859 fl_mask_update_range(mask
);
860 fl_set_masked_key(&f
->mkey
, &f
->key
, mask
);
865 static int fl_change(struct net
*net
, struct sk_buff
*in_skb
,
866 struct tcf_proto
*tp
, unsigned long base
,
867 u32 handle
, struct nlattr
**tca
,
868 void **arg
, bool ovr
)
870 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
871 struct cls_fl_filter
*fold
= *arg
;
872 struct cls_fl_filter
*fnew
;
874 struct fl_flow_mask mask
= {};
875 unsigned long idr_index
;
878 if (!tca
[TCA_OPTIONS
])
881 tb
= kcalloc(TCA_FLOWER_MAX
+ 1, sizeof(struct nlattr
*), GFP_KERNEL
);
885 err
= nla_parse_nested(tb
, TCA_FLOWER_MAX
, tca
[TCA_OPTIONS
],
890 if (fold
&& handle
&& fold
->handle
!= handle
) {
895 fnew
= kzalloc(sizeof(*fnew
), GFP_KERNEL
);
901 err
= tcf_exts_init(&fnew
->exts
, TCA_FLOWER_ACT
, 0);
906 err
= idr_alloc_ext(&head
->handle_idr
, fnew
, &idr_index
,
907 1, 0x80000000, GFP_KERNEL
);
910 fnew
->handle
= idr_index
;
913 /* user specifies a handle and it doesn't exist */
914 if (handle
&& !fold
) {
915 err
= idr_alloc_ext(&head
->handle_idr
, fnew
, &idr_index
,
916 handle
, handle
+ 1, GFP_KERNEL
);
919 fnew
->handle
= idr_index
;
922 if (tb
[TCA_FLOWER_FLAGS
]) {
923 fnew
->flags
= nla_get_u32(tb
[TCA_FLOWER_FLAGS
]);
925 if (!tc_flags_valid(fnew
->flags
)) {
931 err
= fl_set_parms(net
, tp
, fnew
, &mask
, base
, tb
, tca
[TCA_RATE
], ovr
);
935 err
= fl_check_assign_mask(head
, &mask
);
939 if (!tc_skip_sw(fnew
->flags
)) {
940 if (!fold
&& fl_lookup(head
, &fnew
->mkey
)) {
945 err
= rhashtable_insert_fast(&head
->ht
, &fnew
->ht_node
,
951 if (!tc_skip_hw(fnew
->flags
)) {
952 err
= fl_hw_replace_filter(tp
,
960 if (!tc_in_hw(fnew
->flags
))
961 fnew
->flags
|= TCA_CLS_FLAGS_NOT_IN_HW
;
964 if (!tc_skip_sw(fold
->flags
))
965 rhashtable_remove_fast(&head
->ht
, &fold
->ht_node
,
967 if (!tc_skip_hw(fold
->flags
))
968 fl_hw_destroy_filter(tp
, fold
);
974 fnew
->handle
= handle
;
975 idr_replace_ext(&head
->handle_idr
, fnew
, fnew
->handle
);
976 list_replace_rcu(&fold
->list
, &fnew
->list
);
977 tcf_unbind_filter(tp
, &fold
->res
);
978 call_rcu(&fold
->rcu
, fl_destroy_filter
);
980 list_add_tail_rcu(&fnew
->list
, &head
->filters
);
988 idr_remove_ext(&head
->handle_idr
, fnew
->handle
);
990 tcf_exts_destroy(&fnew
->exts
);
997 static int fl_delete(struct tcf_proto
*tp
, void *arg
, bool *last
)
999 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
1000 struct cls_fl_filter
*f
= arg
;
1002 if (!tc_skip_sw(f
->flags
))
1003 rhashtable_remove_fast(&head
->ht
, &f
->ht_node
,
1006 *last
= list_empty(&head
->filters
);
1010 static void fl_walk(struct tcf_proto
*tp
, struct tcf_walker
*arg
)
1012 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
1013 struct cls_fl_filter
*f
;
1015 list_for_each_entry_rcu(f
, &head
->filters
, list
) {
1016 if (arg
->count
< arg
->skip
)
1018 if (arg
->fn(tp
, f
, arg
) < 0) {
1027 static int fl_dump_key_val(struct sk_buff
*skb
,
1028 void *val
, int val_type
,
1029 void *mask
, int mask_type
, int len
)
1033 if (!memchr_inv(mask
, 0, len
))
1035 err
= nla_put(skb
, val_type
, len
, val
);
1038 if (mask_type
!= TCA_FLOWER_UNSPEC
) {
1039 err
= nla_put(skb
, mask_type
, len
, mask
);
1046 static int fl_dump_key_mpls(struct sk_buff
*skb
,
1047 struct flow_dissector_key_mpls
*mpls_key
,
1048 struct flow_dissector_key_mpls
*mpls_mask
)
1052 if (!memchr_inv(mpls_mask
, 0, sizeof(*mpls_mask
)))
1054 if (mpls_mask
->mpls_ttl
) {
1055 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_TTL
,
1056 mpls_key
->mpls_ttl
);
1060 if (mpls_mask
->mpls_tc
) {
1061 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_TC
,
1066 if (mpls_mask
->mpls_label
) {
1067 err
= nla_put_u32(skb
, TCA_FLOWER_KEY_MPLS_LABEL
,
1068 mpls_key
->mpls_label
);
1072 if (mpls_mask
->mpls_bos
) {
1073 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_BOS
,
1074 mpls_key
->mpls_bos
);
1081 static int fl_dump_key_ip(struct sk_buff
*skb
,
1082 struct flow_dissector_key_ip
*key
,
1083 struct flow_dissector_key_ip
*mask
)
1085 if (fl_dump_key_val(skb
, &key
->tos
, TCA_FLOWER_KEY_IP_TOS
, &mask
->tos
,
1086 TCA_FLOWER_KEY_IP_TOS_MASK
, sizeof(key
->tos
)) ||
1087 fl_dump_key_val(skb
, &key
->ttl
, TCA_FLOWER_KEY_IP_TTL
, &mask
->ttl
,
1088 TCA_FLOWER_KEY_IP_TTL_MASK
, sizeof(key
->ttl
)))
1094 static int fl_dump_key_vlan(struct sk_buff
*skb
,
1095 struct flow_dissector_key_vlan
*vlan_key
,
1096 struct flow_dissector_key_vlan
*vlan_mask
)
1100 if (!memchr_inv(vlan_mask
, 0, sizeof(*vlan_mask
)))
1102 if (vlan_mask
->vlan_id
) {
1103 err
= nla_put_u16(skb
, TCA_FLOWER_KEY_VLAN_ID
,
1108 if (vlan_mask
->vlan_priority
) {
1109 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_VLAN_PRIO
,
1110 vlan_key
->vlan_priority
);
1117 static void fl_get_key_flag(u32 dissector_key
, u32 dissector_mask
,
1118 u32
*flower_key
, u32
*flower_mask
,
1119 u32 flower_flag_bit
, u32 dissector_flag_bit
)
1121 if (dissector_mask
& dissector_flag_bit
) {
1122 *flower_mask
|= flower_flag_bit
;
1123 if (dissector_key
& dissector_flag_bit
)
1124 *flower_key
|= flower_flag_bit
;
1128 static int fl_dump_key_flags(struct sk_buff
*skb
, u32 flags_key
, u32 flags_mask
)
1134 if (!memchr_inv(&flags_mask
, 0, sizeof(flags_mask
)))
1140 fl_get_key_flag(flags_key
, flags_mask
, &key
, &mask
,
1141 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT
, FLOW_DIS_IS_FRAGMENT
);
1143 _key
= cpu_to_be32(key
);
1144 _mask
= cpu_to_be32(mask
);
1146 err
= nla_put(skb
, TCA_FLOWER_KEY_FLAGS
, 4, &_key
);
1150 return nla_put(skb
, TCA_FLOWER_KEY_FLAGS_MASK
, 4, &_mask
);
1153 static int fl_dump(struct net
*net
, struct tcf_proto
*tp
, void *fh
,
1154 struct sk_buff
*skb
, struct tcmsg
*t
)
1156 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
1157 struct cls_fl_filter
*f
= fh
;
1158 struct nlattr
*nest
;
1159 struct fl_flow_key
*key
, *mask
;
1164 t
->tcm_handle
= f
->handle
;
1166 nest
= nla_nest_start(skb
, TCA_OPTIONS
);
1168 goto nla_put_failure
;
1170 if (f
->res
.classid
&&
1171 nla_put_u32(skb
, TCA_FLOWER_CLASSID
, f
->res
.classid
))
1172 goto nla_put_failure
;
1175 mask
= &head
->mask
.key
;
1177 if (mask
->indev_ifindex
) {
1178 struct net_device
*dev
;
1180 dev
= __dev_get_by_index(net
, key
->indev_ifindex
);
1181 if (dev
&& nla_put_string(skb
, TCA_FLOWER_INDEV
, dev
->name
))
1182 goto nla_put_failure
;
1185 if (!tc_skip_hw(f
->flags
))
1186 fl_hw_update_stats(tp
, f
);
1188 if (fl_dump_key_val(skb
, key
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST
,
1189 mask
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST_MASK
,
1190 sizeof(key
->eth
.dst
)) ||
1191 fl_dump_key_val(skb
, key
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC
,
1192 mask
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC_MASK
,
1193 sizeof(key
->eth
.src
)) ||
1194 fl_dump_key_val(skb
, &key
->basic
.n_proto
, TCA_FLOWER_KEY_ETH_TYPE
,
1195 &mask
->basic
.n_proto
, TCA_FLOWER_UNSPEC
,
1196 sizeof(key
->basic
.n_proto
)))
1197 goto nla_put_failure
;
1199 if (fl_dump_key_mpls(skb
, &key
->mpls
, &mask
->mpls
))
1200 goto nla_put_failure
;
1202 if (fl_dump_key_vlan(skb
, &key
->vlan
, &mask
->vlan
))
1203 goto nla_put_failure
;
1205 if ((key
->basic
.n_proto
== htons(ETH_P_IP
) ||
1206 key
->basic
.n_proto
== htons(ETH_P_IPV6
)) &&
1207 (fl_dump_key_val(skb
, &key
->basic
.ip_proto
, TCA_FLOWER_KEY_IP_PROTO
,
1208 &mask
->basic
.ip_proto
, TCA_FLOWER_UNSPEC
,
1209 sizeof(key
->basic
.ip_proto
)) ||
1210 fl_dump_key_ip(skb
, &key
->ip
, &mask
->ip
)))
1211 goto nla_put_failure
;
1213 if (key
->control
.addr_type
== FLOW_DISSECTOR_KEY_IPV4_ADDRS
&&
1214 (fl_dump_key_val(skb
, &key
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC
,
1215 &mask
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC_MASK
,
1216 sizeof(key
->ipv4
.src
)) ||
1217 fl_dump_key_val(skb
, &key
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST
,
1218 &mask
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST_MASK
,
1219 sizeof(key
->ipv4
.dst
))))
1220 goto nla_put_failure
;
1221 else if (key
->control
.addr_type
== FLOW_DISSECTOR_KEY_IPV6_ADDRS
&&
1222 (fl_dump_key_val(skb
, &key
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC
,
1223 &mask
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC_MASK
,
1224 sizeof(key
->ipv6
.src
)) ||
1225 fl_dump_key_val(skb
, &key
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST
,
1226 &mask
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST_MASK
,
1227 sizeof(key
->ipv6
.dst
))))
1228 goto nla_put_failure
;
1230 if (key
->basic
.ip_proto
== IPPROTO_TCP
&&
1231 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC
,
1232 &mask
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC_MASK
,
1233 sizeof(key
->tp
.src
)) ||
1234 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST
,
1235 &mask
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST_MASK
,
1236 sizeof(key
->tp
.dst
)) ||
1237 fl_dump_key_val(skb
, &key
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS
,
1238 &mask
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS_MASK
,
1239 sizeof(key
->tcp
.flags
))))
1240 goto nla_put_failure
;
1241 else if (key
->basic
.ip_proto
== IPPROTO_UDP
&&
1242 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC
,
1243 &mask
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC_MASK
,
1244 sizeof(key
->tp
.src
)) ||
1245 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST
,
1246 &mask
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST_MASK
,
1247 sizeof(key
->tp
.dst
))))
1248 goto nla_put_failure
;
1249 else if (key
->basic
.ip_proto
== IPPROTO_SCTP
&&
1250 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC
,
1251 &mask
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC_MASK
,
1252 sizeof(key
->tp
.src
)) ||
1253 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST
,
1254 &mask
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST_MASK
,
1255 sizeof(key
->tp
.dst
))))
1256 goto nla_put_failure
;
1257 else if (key
->basic
.n_proto
== htons(ETH_P_IP
) &&
1258 key
->basic
.ip_proto
== IPPROTO_ICMP
&&
1259 (fl_dump_key_val(skb
, &key
->icmp
.type
,
1260 TCA_FLOWER_KEY_ICMPV4_TYPE
, &mask
->icmp
.type
,
1261 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
,
1262 sizeof(key
->icmp
.type
)) ||
1263 fl_dump_key_val(skb
, &key
->icmp
.code
,
1264 TCA_FLOWER_KEY_ICMPV4_CODE
, &mask
->icmp
.code
,
1265 TCA_FLOWER_KEY_ICMPV4_CODE_MASK
,
1266 sizeof(key
->icmp
.code
))))
1267 goto nla_put_failure
;
1268 else if (key
->basic
.n_proto
== htons(ETH_P_IPV6
) &&
1269 key
->basic
.ip_proto
== IPPROTO_ICMPV6
&&
1270 (fl_dump_key_val(skb
, &key
->icmp
.type
,
1271 TCA_FLOWER_KEY_ICMPV6_TYPE
, &mask
->icmp
.type
,
1272 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
,
1273 sizeof(key
->icmp
.type
)) ||
1274 fl_dump_key_val(skb
, &key
->icmp
.code
,
1275 TCA_FLOWER_KEY_ICMPV6_CODE
, &mask
->icmp
.code
,
1276 TCA_FLOWER_KEY_ICMPV6_CODE_MASK
,
1277 sizeof(key
->icmp
.code
))))
1278 goto nla_put_failure
;
1279 else if ((key
->basic
.n_proto
== htons(ETH_P_ARP
) ||
1280 key
->basic
.n_proto
== htons(ETH_P_RARP
)) &&
1281 (fl_dump_key_val(skb
, &key
->arp
.sip
,
1282 TCA_FLOWER_KEY_ARP_SIP
, &mask
->arp
.sip
,
1283 TCA_FLOWER_KEY_ARP_SIP_MASK
,
1284 sizeof(key
->arp
.sip
)) ||
1285 fl_dump_key_val(skb
, &key
->arp
.tip
,
1286 TCA_FLOWER_KEY_ARP_TIP
, &mask
->arp
.tip
,
1287 TCA_FLOWER_KEY_ARP_TIP_MASK
,
1288 sizeof(key
->arp
.tip
)) ||
1289 fl_dump_key_val(skb
, &key
->arp
.op
,
1290 TCA_FLOWER_KEY_ARP_OP
, &mask
->arp
.op
,
1291 TCA_FLOWER_KEY_ARP_OP_MASK
,
1292 sizeof(key
->arp
.op
)) ||
1293 fl_dump_key_val(skb
, key
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA
,
1294 mask
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA_MASK
,
1295 sizeof(key
->arp
.sha
)) ||
1296 fl_dump_key_val(skb
, key
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA
,
1297 mask
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA_MASK
,
1298 sizeof(key
->arp
.tha
))))
1299 goto nla_put_failure
;
1301 if (key
->enc_control
.addr_type
== FLOW_DISSECTOR_KEY_IPV4_ADDRS
&&
1302 (fl_dump_key_val(skb
, &key
->enc_ipv4
.src
,
1303 TCA_FLOWER_KEY_ENC_IPV4_SRC
, &mask
->enc_ipv4
.src
,
1304 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
,
1305 sizeof(key
->enc_ipv4
.src
)) ||
1306 fl_dump_key_val(skb
, &key
->enc_ipv4
.dst
,
1307 TCA_FLOWER_KEY_ENC_IPV4_DST
, &mask
->enc_ipv4
.dst
,
1308 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
,
1309 sizeof(key
->enc_ipv4
.dst
))))
1310 goto nla_put_failure
;
1311 else if (key
->enc_control
.addr_type
== FLOW_DISSECTOR_KEY_IPV6_ADDRS
&&
1312 (fl_dump_key_val(skb
, &key
->enc_ipv6
.src
,
1313 TCA_FLOWER_KEY_ENC_IPV6_SRC
, &mask
->enc_ipv6
.src
,
1314 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
,
1315 sizeof(key
->enc_ipv6
.src
)) ||
1316 fl_dump_key_val(skb
, &key
->enc_ipv6
.dst
,
1317 TCA_FLOWER_KEY_ENC_IPV6_DST
,
1318 &mask
->enc_ipv6
.dst
,
1319 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
,
1320 sizeof(key
->enc_ipv6
.dst
))))
1321 goto nla_put_failure
;
1323 if (fl_dump_key_val(skb
, &key
->enc_key_id
, TCA_FLOWER_KEY_ENC_KEY_ID
,
1324 &mask
->enc_key_id
, TCA_FLOWER_UNSPEC
,
1325 sizeof(key
->enc_key_id
)) ||
1326 fl_dump_key_val(skb
, &key
->enc_tp
.src
,
1327 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
,
1329 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
,
1330 sizeof(key
->enc_tp
.src
)) ||
1331 fl_dump_key_val(skb
, &key
->enc_tp
.dst
,
1332 TCA_FLOWER_KEY_ENC_UDP_DST_PORT
,
1334 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
,
1335 sizeof(key
->enc_tp
.dst
)))
1336 goto nla_put_failure
;
1338 if (fl_dump_key_flags(skb
, key
->control
.flags
, mask
->control
.flags
))
1339 goto nla_put_failure
;
1341 if (f
->flags
&& nla_put_u32(skb
, TCA_FLOWER_FLAGS
, f
->flags
))
1342 goto nla_put_failure
;
1344 if (tcf_exts_dump(skb
, &f
->exts
))
1345 goto nla_put_failure
;
1347 nla_nest_end(skb
, nest
);
1349 if (tcf_exts_dump_stats(skb
, &f
->exts
) < 0)
1350 goto nla_put_failure
;
1355 nla_nest_cancel(skb
, nest
);
1359 static void fl_bind_class(void *fh
, u32 classid
, unsigned long cl
)
1361 struct cls_fl_filter
*f
= fh
;
1363 if (f
&& f
->res
.classid
== classid
)
1367 static struct tcf_proto_ops cls_fl_ops __read_mostly
= {
1369 .classify
= fl_classify
,
1371 .destroy
= fl_destroy
,
1373 .change
= fl_change
,
1374 .delete = fl_delete
,
1377 .bind_class
= fl_bind_class
,
1378 .owner
= THIS_MODULE
,
1381 static int __init
cls_fl_init(void)
1383 return register_tcf_proto_ops(&cls_fl_ops
);
1386 static void __exit
cls_fl_exit(void)
1388 unregister_tcf_proto_ops(&cls_fl_ops
);
1391 module_init(cls_fl_init
);
1392 module_exit(cls_fl_exit
);
1394 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1395 MODULE_DESCRIPTION("Flower classifier");
1396 MODULE_LICENSE("GPL v2");