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
;
238 dev
->netdev_ops
->ndo_setup_tc(dev
, TC_SETUP_CLSFLOWER
, &cls_flower
);
241 static int fl_hw_replace_filter(struct tcf_proto
*tp
,
242 struct flow_dissector
*dissector
,
243 struct fl_flow_key
*mask
,
244 struct cls_fl_filter
*f
)
246 struct net_device
*dev
= tp
->q
->dev_queue
->dev
;
247 struct tc_cls_flower_offload cls_flower
= {};
250 if (!tc_can_offload(dev
)) {
251 if (tcf_exts_get_dev(dev
, &f
->exts
, &f
->hw_dev
) ||
252 (f
->hw_dev
&& !tc_can_offload(f
->hw_dev
))) {
254 return tc_skip_sw(f
->flags
) ? -EINVAL
: 0;
257 cls_flower
.egress_dev
= true;
262 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
263 cls_flower
.command
= TC_CLSFLOWER_REPLACE
;
264 cls_flower
.cookie
= (unsigned long) f
;
265 cls_flower
.dissector
= dissector
;
266 cls_flower
.mask
= mask
;
267 cls_flower
.key
= &f
->mkey
;
268 cls_flower
.exts
= &f
->exts
;
270 err
= dev
->netdev_ops
->ndo_setup_tc(dev
, TC_SETUP_CLSFLOWER
,
273 f
->flags
|= TCA_CLS_FLAGS_IN_HW
;
275 if (tc_skip_sw(f
->flags
))
280 static void fl_hw_update_stats(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
282 struct tc_cls_flower_offload cls_flower
= {};
283 struct net_device
*dev
= f
->hw_dev
;
285 if (!tc_can_offload(dev
))
288 tc_cls_common_offload_init(&cls_flower
.common
, tp
);
289 cls_flower
.command
= TC_CLSFLOWER_STATS
;
290 cls_flower
.cookie
= (unsigned long) f
;
291 cls_flower
.exts
= &f
->exts
;
293 dev
->netdev_ops
->ndo_setup_tc(dev
, TC_SETUP_CLSFLOWER
,
297 static void __fl_delete(struct tcf_proto
*tp
, struct cls_fl_filter
*f
)
299 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
301 idr_remove_ext(&head
->handle_idr
, f
->handle
);
302 list_del_rcu(&f
->list
);
303 if (!tc_skip_hw(f
->flags
))
304 fl_hw_destroy_filter(tp
, f
);
305 tcf_unbind_filter(tp
, &f
->res
);
306 call_rcu(&f
->rcu
, fl_destroy_filter
);
309 static void fl_destroy_sleepable(struct work_struct
*work
)
311 struct cls_fl_head
*head
= container_of(work
, struct cls_fl_head
,
313 if (head
->mask_assigned
)
314 rhashtable_destroy(&head
->ht
);
316 module_put(THIS_MODULE
);
319 static void fl_destroy_rcu(struct rcu_head
*rcu
)
321 struct cls_fl_head
*head
= container_of(rcu
, struct cls_fl_head
, rcu
);
323 INIT_WORK(&head
->work
, fl_destroy_sleepable
);
324 schedule_work(&head
->work
);
327 static void fl_destroy(struct tcf_proto
*tp
)
329 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
330 struct cls_fl_filter
*f
, *next
;
332 list_for_each_entry_safe(f
, next
, &head
->filters
, list
)
334 idr_destroy(&head
->handle_idr
);
336 __module_get(THIS_MODULE
);
337 call_rcu(&head
->rcu
, fl_destroy_rcu
);
340 static void *fl_get(struct tcf_proto
*tp
, u32 handle
)
342 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
344 return idr_find_ext(&head
->handle_idr
, handle
);
347 static const struct nla_policy fl_policy
[TCA_FLOWER_MAX
+ 1] = {
348 [TCA_FLOWER_UNSPEC
] = { .type
= NLA_UNSPEC
},
349 [TCA_FLOWER_CLASSID
] = { .type
= NLA_U32
},
350 [TCA_FLOWER_INDEV
] = { .type
= NLA_STRING
,
352 [TCA_FLOWER_KEY_ETH_DST
] = { .len
= ETH_ALEN
},
353 [TCA_FLOWER_KEY_ETH_DST_MASK
] = { .len
= ETH_ALEN
},
354 [TCA_FLOWER_KEY_ETH_SRC
] = { .len
= ETH_ALEN
},
355 [TCA_FLOWER_KEY_ETH_SRC_MASK
] = { .len
= ETH_ALEN
},
356 [TCA_FLOWER_KEY_ETH_TYPE
] = { .type
= NLA_U16
},
357 [TCA_FLOWER_KEY_IP_PROTO
] = { .type
= NLA_U8
},
358 [TCA_FLOWER_KEY_IPV4_SRC
] = { .type
= NLA_U32
},
359 [TCA_FLOWER_KEY_IPV4_SRC_MASK
] = { .type
= NLA_U32
},
360 [TCA_FLOWER_KEY_IPV4_DST
] = { .type
= NLA_U32
},
361 [TCA_FLOWER_KEY_IPV4_DST_MASK
] = { .type
= NLA_U32
},
362 [TCA_FLOWER_KEY_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
363 [TCA_FLOWER_KEY_IPV6_SRC_MASK
] = { .len
= sizeof(struct in6_addr
) },
364 [TCA_FLOWER_KEY_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
365 [TCA_FLOWER_KEY_IPV6_DST_MASK
] = { .len
= sizeof(struct in6_addr
) },
366 [TCA_FLOWER_KEY_TCP_SRC
] = { .type
= NLA_U16
},
367 [TCA_FLOWER_KEY_TCP_DST
] = { .type
= NLA_U16
},
368 [TCA_FLOWER_KEY_UDP_SRC
] = { .type
= NLA_U16
},
369 [TCA_FLOWER_KEY_UDP_DST
] = { .type
= NLA_U16
},
370 [TCA_FLOWER_KEY_VLAN_ID
] = { .type
= NLA_U16
},
371 [TCA_FLOWER_KEY_VLAN_PRIO
] = { .type
= NLA_U8
},
372 [TCA_FLOWER_KEY_VLAN_ETH_TYPE
] = { .type
= NLA_U16
},
373 [TCA_FLOWER_KEY_ENC_KEY_ID
] = { .type
= NLA_U32
},
374 [TCA_FLOWER_KEY_ENC_IPV4_SRC
] = { .type
= NLA_U32
},
375 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
] = { .type
= NLA_U32
},
376 [TCA_FLOWER_KEY_ENC_IPV4_DST
] = { .type
= NLA_U32
},
377 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
] = { .type
= NLA_U32
},
378 [TCA_FLOWER_KEY_ENC_IPV6_SRC
] = { .len
= sizeof(struct in6_addr
) },
379 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
] = { .len
= sizeof(struct in6_addr
) },
380 [TCA_FLOWER_KEY_ENC_IPV6_DST
] = { .len
= sizeof(struct in6_addr
) },
381 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
] = { .len
= sizeof(struct in6_addr
) },
382 [TCA_FLOWER_KEY_TCP_SRC_MASK
] = { .type
= NLA_U16
},
383 [TCA_FLOWER_KEY_TCP_DST_MASK
] = { .type
= NLA_U16
},
384 [TCA_FLOWER_KEY_UDP_SRC_MASK
] = { .type
= NLA_U16
},
385 [TCA_FLOWER_KEY_UDP_DST_MASK
] = { .type
= NLA_U16
},
386 [TCA_FLOWER_KEY_SCTP_SRC_MASK
] = { .type
= NLA_U16
},
387 [TCA_FLOWER_KEY_SCTP_DST_MASK
] = { .type
= NLA_U16
},
388 [TCA_FLOWER_KEY_SCTP_SRC
] = { .type
= NLA_U16
},
389 [TCA_FLOWER_KEY_SCTP_DST
] = { .type
= NLA_U16
},
390 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
] = { .type
= NLA_U16
},
391 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
] = { .type
= NLA_U16
},
392 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT
] = { .type
= NLA_U16
},
393 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
] = { .type
= NLA_U16
},
394 [TCA_FLOWER_KEY_FLAGS
] = { .type
= NLA_U32
},
395 [TCA_FLOWER_KEY_FLAGS_MASK
] = { .type
= NLA_U32
},
396 [TCA_FLOWER_KEY_ICMPV4_TYPE
] = { .type
= NLA_U8
},
397 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
] = { .type
= NLA_U8
},
398 [TCA_FLOWER_KEY_ICMPV4_CODE
] = { .type
= NLA_U8
},
399 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK
] = { .type
= NLA_U8
},
400 [TCA_FLOWER_KEY_ICMPV6_TYPE
] = { .type
= NLA_U8
},
401 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
] = { .type
= NLA_U8
},
402 [TCA_FLOWER_KEY_ICMPV6_CODE
] = { .type
= NLA_U8
},
403 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK
] = { .type
= NLA_U8
},
404 [TCA_FLOWER_KEY_ARP_SIP
] = { .type
= NLA_U32
},
405 [TCA_FLOWER_KEY_ARP_SIP_MASK
] = { .type
= NLA_U32
},
406 [TCA_FLOWER_KEY_ARP_TIP
] = { .type
= NLA_U32
},
407 [TCA_FLOWER_KEY_ARP_TIP_MASK
] = { .type
= NLA_U32
},
408 [TCA_FLOWER_KEY_ARP_OP
] = { .type
= NLA_U8
},
409 [TCA_FLOWER_KEY_ARP_OP_MASK
] = { .type
= NLA_U8
},
410 [TCA_FLOWER_KEY_ARP_SHA
] = { .len
= ETH_ALEN
},
411 [TCA_FLOWER_KEY_ARP_SHA_MASK
] = { .len
= ETH_ALEN
},
412 [TCA_FLOWER_KEY_ARP_THA
] = { .len
= ETH_ALEN
},
413 [TCA_FLOWER_KEY_ARP_THA_MASK
] = { .len
= ETH_ALEN
},
414 [TCA_FLOWER_KEY_MPLS_TTL
] = { .type
= NLA_U8
},
415 [TCA_FLOWER_KEY_MPLS_BOS
] = { .type
= NLA_U8
},
416 [TCA_FLOWER_KEY_MPLS_TC
] = { .type
= NLA_U8
},
417 [TCA_FLOWER_KEY_MPLS_LABEL
] = { .type
= NLA_U32
},
418 [TCA_FLOWER_KEY_TCP_FLAGS
] = { .type
= NLA_U16
},
419 [TCA_FLOWER_KEY_TCP_FLAGS_MASK
] = { .type
= NLA_U16
},
420 [TCA_FLOWER_KEY_IP_TOS
] = { .type
= NLA_U8
},
421 [TCA_FLOWER_KEY_IP_TOS_MASK
] = { .type
= NLA_U8
},
422 [TCA_FLOWER_KEY_IP_TTL
] = { .type
= NLA_U8
},
423 [TCA_FLOWER_KEY_IP_TTL_MASK
] = { .type
= NLA_U8
},
426 static void fl_set_key_val(struct nlattr
**tb
,
427 void *val
, int val_type
,
428 void *mask
, int mask_type
, int len
)
432 memcpy(val
, nla_data(tb
[val_type
]), len
);
433 if (mask_type
== TCA_FLOWER_UNSPEC
|| !tb
[mask_type
])
434 memset(mask
, 0xff, len
);
436 memcpy(mask
, nla_data(tb
[mask_type
]), len
);
439 static int fl_set_key_mpls(struct nlattr
**tb
,
440 struct flow_dissector_key_mpls
*key_val
,
441 struct flow_dissector_key_mpls
*key_mask
)
443 if (tb
[TCA_FLOWER_KEY_MPLS_TTL
]) {
444 key_val
->mpls_ttl
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_TTL
]);
445 key_mask
->mpls_ttl
= MPLS_TTL_MASK
;
447 if (tb
[TCA_FLOWER_KEY_MPLS_BOS
]) {
448 u8 bos
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_BOS
]);
450 if (bos
& ~MPLS_BOS_MASK
)
452 key_val
->mpls_bos
= bos
;
453 key_mask
->mpls_bos
= MPLS_BOS_MASK
;
455 if (tb
[TCA_FLOWER_KEY_MPLS_TC
]) {
456 u8 tc
= nla_get_u8(tb
[TCA_FLOWER_KEY_MPLS_TC
]);
458 if (tc
& ~MPLS_TC_MASK
)
460 key_val
->mpls_tc
= tc
;
461 key_mask
->mpls_tc
= MPLS_TC_MASK
;
463 if (tb
[TCA_FLOWER_KEY_MPLS_LABEL
]) {
464 u32 label
= nla_get_u32(tb
[TCA_FLOWER_KEY_MPLS_LABEL
]);
466 if (label
& ~MPLS_LABEL_MASK
)
468 key_val
->mpls_label
= label
;
469 key_mask
->mpls_label
= MPLS_LABEL_MASK
;
474 static void fl_set_key_vlan(struct nlattr
**tb
,
475 struct flow_dissector_key_vlan
*key_val
,
476 struct flow_dissector_key_vlan
*key_mask
)
478 #define VLAN_PRIORITY_MASK 0x7
480 if (tb
[TCA_FLOWER_KEY_VLAN_ID
]) {
482 nla_get_u16(tb
[TCA_FLOWER_KEY_VLAN_ID
]) & VLAN_VID_MASK
;
483 key_mask
->vlan_id
= VLAN_VID_MASK
;
485 if (tb
[TCA_FLOWER_KEY_VLAN_PRIO
]) {
486 key_val
->vlan_priority
=
487 nla_get_u8(tb
[TCA_FLOWER_KEY_VLAN_PRIO
]) &
489 key_mask
->vlan_priority
= VLAN_PRIORITY_MASK
;
493 static void fl_set_key_flag(u32 flower_key
, u32 flower_mask
,
494 u32
*dissector_key
, u32
*dissector_mask
,
495 u32 flower_flag_bit
, u32 dissector_flag_bit
)
497 if (flower_mask
& flower_flag_bit
) {
498 *dissector_mask
|= dissector_flag_bit
;
499 if (flower_key
& flower_flag_bit
)
500 *dissector_key
|= dissector_flag_bit
;
504 static int fl_set_key_flags(struct nlattr
**tb
,
505 u32
*flags_key
, u32
*flags_mask
)
509 /* mask is mandatory for flags */
510 if (!tb
[TCA_FLOWER_KEY_FLAGS_MASK
])
513 key
= be32_to_cpu(nla_get_u32(tb
[TCA_FLOWER_KEY_FLAGS
]));
514 mask
= be32_to_cpu(nla_get_u32(tb
[TCA_FLOWER_KEY_FLAGS_MASK
]));
519 fl_set_key_flag(key
, mask
, flags_key
, flags_mask
,
520 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT
, FLOW_DIS_IS_FRAGMENT
);
525 static void fl_set_key_ip(struct nlattr
**tb
,
526 struct flow_dissector_key_ip
*key
,
527 struct flow_dissector_key_ip
*mask
)
529 fl_set_key_val(tb
, &key
->tos
, TCA_FLOWER_KEY_IP_TOS
,
530 &mask
->tos
, TCA_FLOWER_KEY_IP_TOS_MASK
,
533 fl_set_key_val(tb
, &key
->ttl
, TCA_FLOWER_KEY_IP_TTL
,
534 &mask
->ttl
, TCA_FLOWER_KEY_IP_TTL_MASK
,
538 static int fl_set_key(struct net
*net
, struct nlattr
**tb
,
539 struct fl_flow_key
*key
, struct fl_flow_key
*mask
)
543 #ifdef CONFIG_NET_CLS_IND
544 if (tb
[TCA_FLOWER_INDEV
]) {
545 int err
= tcf_change_indev(net
, tb
[TCA_FLOWER_INDEV
]);
548 key
->indev_ifindex
= err
;
549 mask
->indev_ifindex
= 0xffffffff;
553 fl_set_key_val(tb
, key
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST
,
554 mask
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST_MASK
,
555 sizeof(key
->eth
.dst
));
556 fl_set_key_val(tb
, key
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC
,
557 mask
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC_MASK
,
558 sizeof(key
->eth
.src
));
560 if (tb
[TCA_FLOWER_KEY_ETH_TYPE
]) {
561 ethertype
= nla_get_be16(tb
[TCA_FLOWER_KEY_ETH_TYPE
]);
563 if (ethertype
== htons(ETH_P_8021Q
)) {
564 fl_set_key_vlan(tb
, &key
->vlan
, &mask
->vlan
);
565 fl_set_key_val(tb
, &key
->basic
.n_proto
,
566 TCA_FLOWER_KEY_VLAN_ETH_TYPE
,
567 &mask
->basic
.n_proto
, TCA_FLOWER_UNSPEC
,
568 sizeof(key
->basic
.n_proto
));
570 key
->basic
.n_proto
= ethertype
;
571 mask
->basic
.n_proto
= cpu_to_be16(~0);
575 if (key
->basic
.n_proto
== htons(ETH_P_IP
) ||
576 key
->basic
.n_proto
== htons(ETH_P_IPV6
)) {
577 fl_set_key_val(tb
, &key
->basic
.ip_proto
, TCA_FLOWER_KEY_IP_PROTO
,
578 &mask
->basic
.ip_proto
, TCA_FLOWER_UNSPEC
,
579 sizeof(key
->basic
.ip_proto
));
580 fl_set_key_ip(tb
, &key
->ip
, &mask
->ip
);
583 if (tb
[TCA_FLOWER_KEY_IPV4_SRC
] || tb
[TCA_FLOWER_KEY_IPV4_DST
]) {
584 key
->control
.addr_type
= FLOW_DISSECTOR_KEY_IPV4_ADDRS
;
585 mask
->control
.addr_type
= ~0;
586 fl_set_key_val(tb
, &key
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC
,
587 &mask
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC_MASK
,
588 sizeof(key
->ipv4
.src
));
589 fl_set_key_val(tb
, &key
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST
,
590 &mask
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST_MASK
,
591 sizeof(key
->ipv4
.dst
));
592 } else if (tb
[TCA_FLOWER_KEY_IPV6_SRC
] || tb
[TCA_FLOWER_KEY_IPV6_DST
]) {
593 key
->control
.addr_type
= FLOW_DISSECTOR_KEY_IPV6_ADDRS
;
594 mask
->control
.addr_type
= ~0;
595 fl_set_key_val(tb
, &key
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC
,
596 &mask
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC_MASK
,
597 sizeof(key
->ipv6
.src
));
598 fl_set_key_val(tb
, &key
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST
,
599 &mask
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST_MASK
,
600 sizeof(key
->ipv6
.dst
));
603 if (key
->basic
.ip_proto
== IPPROTO_TCP
) {
604 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC
,
605 &mask
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC_MASK
,
606 sizeof(key
->tp
.src
));
607 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST
,
608 &mask
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST_MASK
,
609 sizeof(key
->tp
.dst
));
610 fl_set_key_val(tb
, &key
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS
,
611 &mask
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS_MASK
,
612 sizeof(key
->tcp
.flags
));
613 } else if (key
->basic
.ip_proto
== IPPROTO_UDP
) {
614 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC
,
615 &mask
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC_MASK
,
616 sizeof(key
->tp
.src
));
617 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST
,
618 &mask
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST_MASK
,
619 sizeof(key
->tp
.dst
));
620 } else if (key
->basic
.ip_proto
== IPPROTO_SCTP
) {
621 fl_set_key_val(tb
, &key
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC
,
622 &mask
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC_MASK
,
623 sizeof(key
->tp
.src
));
624 fl_set_key_val(tb
, &key
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST
,
625 &mask
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST_MASK
,
626 sizeof(key
->tp
.dst
));
627 } else if (key
->basic
.n_proto
== htons(ETH_P_IP
) &&
628 key
->basic
.ip_proto
== IPPROTO_ICMP
) {
629 fl_set_key_val(tb
, &key
->icmp
.type
, TCA_FLOWER_KEY_ICMPV4_TYPE
,
631 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
,
632 sizeof(key
->icmp
.type
));
633 fl_set_key_val(tb
, &key
->icmp
.code
, TCA_FLOWER_KEY_ICMPV4_CODE
,
635 TCA_FLOWER_KEY_ICMPV4_CODE_MASK
,
636 sizeof(key
->icmp
.code
));
637 } else if (key
->basic
.n_proto
== htons(ETH_P_IPV6
) &&
638 key
->basic
.ip_proto
== IPPROTO_ICMPV6
) {
639 fl_set_key_val(tb
, &key
->icmp
.type
, TCA_FLOWER_KEY_ICMPV6_TYPE
,
641 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
,
642 sizeof(key
->icmp
.type
));
643 fl_set_key_val(tb
, &key
->icmp
.code
, TCA_FLOWER_KEY_ICMPV6_CODE
,
645 TCA_FLOWER_KEY_ICMPV6_CODE_MASK
,
646 sizeof(key
->icmp
.code
));
647 } else if (key
->basic
.n_proto
== htons(ETH_P_MPLS_UC
) ||
648 key
->basic
.n_proto
== htons(ETH_P_MPLS_MC
)) {
649 ret
= fl_set_key_mpls(tb
, &key
->mpls
, &mask
->mpls
);
652 } else if (key
->basic
.n_proto
== htons(ETH_P_ARP
) ||
653 key
->basic
.n_proto
== htons(ETH_P_RARP
)) {
654 fl_set_key_val(tb
, &key
->arp
.sip
, TCA_FLOWER_KEY_ARP_SIP
,
655 &mask
->arp
.sip
, TCA_FLOWER_KEY_ARP_SIP_MASK
,
656 sizeof(key
->arp
.sip
));
657 fl_set_key_val(tb
, &key
->arp
.tip
, TCA_FLOWER_KEY_ARP_TIP
,
658 &mask
->arp
.tip
, TCA_FLOWER_KEY_ARP_TIP_MASK
,
659 sizeof(key
->arp
.tip
));
660 fl_set_key_val(tb
, &key
->arp
.op
, TCA_FLOWER_KEY_ARP_OP
,
661 &mask
->arp
.op
, TCA_FLOWER_KEY_ARP_OP_MASK
,
662 sizeof(key
->arp
.op
));
663 fl_set_key_val(tb
, key
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA
,
664 mask
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA_MASK
,
665 sizeof(key
->arp
.sha
));
666 fl_set_key_val(tb
, key
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA
,
667 mask
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA_MASK
,
668 sizeof(key
->arp
.tha
));
671 if (tb
[TCA_FLOWER_KEY_ENC_IPV4_SRC
] ||
672 tb
[TCA_FLOWER_KEY_ENC_IPV4_DST
]) {
673 key
->enc_control
.addr_type
= FLOW_DISSECTOR_KEY_IPV4_ADDRS
;
674 mask
->enc_control
.addr_type
= ~0;
675 fl_set_key_val(tb
, &key
->enc_ipv4
.src
,
676 TCA_FLOWER_KEY_ENC_IPV4_SRC
,
678 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
,
679 sizeof(key
->enc_ipv4
.src
));
680 fl_set_key_val(tb
, &key
->enc_ipv4
.dst
,
681 TCA_FLOWER_KEY_ENC_IPV4_DST
,
683 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
,
684 sizeof(key
->enc_ipv4
.dst
));
687 if (tb
[TCA_FLOWER_KEY_ENC_IPV6_SRC
] ||
688 tb
[TCA_FLOWER_KEY_ENC_IPV6_DST
]) {
689 key
->enc_control
.addr_type
= FLOW_DISSECTOR_KEY_IPV6_ADDRS
;
690 mask
->enc_control
.addr_type
= ~0;
691 fl_set_key_val(tb
, &key
->enc_ipv6
.src
,
692 TCA_FLOWER_KEY_ENC_IPV6_SRC
,
694 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
,
695 sizeof(key
->enc_ipv6
.src
));
696 fl_set_key_val(tb
, &key
->enc_ipv6
.dst
,
697 TCA_FLOWER_KEY_ENC_IPV6_DST
,
699 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
,
700 sizeof(key
->enc_ipv6
.dst
));
703 fl_set_key_val(tb
, &key
->enc_key_id
.keyid
, TCA_FLOWER_KEY_ENC_KEY_ID
,
704 &mask
->enc_key_id
.keyid
, TCA_FLOWER_UNSPEC
,
705 sizeof(key
->enc_key_id
.keyid
));
707 fl_set_key_val(tb
, &key
->enc_tp
.src
, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
,
708 &mask
->enc_tp
.src
, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
,
709 sizeof(key
->enc_tp
.src
));
711 fl_set_key_val(tb
, &key
->enc_tp
.dst
, TCA_FLOWER_KEY_ENC_UDP_DST_PORT
,
712 &mask
->enc_tp
.dst
, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
,
713 sizeof(key
->enc_tp
.dst
));
715 if (tb
[TCA_FLOWER_KEY_FLAGS
])
716 ret
= fl_set_key_flags(tb
, &key
->control
.flags
, &mask
->control
.flags
);
721 static bool fl_mask_eq(struct fl_flow_mask
*mask1
,
722 struct fl_flow_mask
*mask2
)
724 const long *lmask1
= fl_key_get_start(&mask1
->key
, mask1
);
725 const long *lmask2
= fl_key_get_start(&mask2
->key
, mask2
);
727 return !memcmp(&mask1
->range
, &mask2
->range
, sizeof(mask1
->range
)) &&
728 !memcmp(lmask1
, lmask2
, fl_mask_range(mask1
));
731 static const struct rhashtable_params fl_ht_params
= {
732 .key_offset
= offsetof(struct cls_fl_filter
, mkey
), /* base offset */
733 .head_offset
= offsetof(struct cls_fl_filter
, ht_node
),
734 .automatic_shrinking
= true,
737 static int fl_init_hashtable(struct cls_fl_head
*head
,
738 struct fl_flow_mask
*mask
)
740 head
->ht_params
= fl_ht_params
;
741 head
->ht_params
.key_len
= fl_mask_range(mask
);
742 head
->ht_params
.key_offset
+= mask
->range
.start
;
744 return rhashtable_init(&head
->ht
, &head
->ht_params
);
747 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
748 #define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
750 #define FL_KEY_IS_MASKED(mask, member) \
751 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
752 0, FL_KEY_MEMBER_SIZE(member)) \
754 #define FL_KEY_SET(keys, cnt, id, member) \
756 keys[cnt].key_id = id; \
757 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
761 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
763 if (FL_KEY_IS_MASKED(mask, member)) \
764 FL_KEY_SET(keys, cnt, id, member); \
767 static void fl_init_dissector(struct cls_fl_head
*head
,
768 struct fl_flow_mask
*mask
)
770 struct flow_dissector_key keys
[FLOW_DISSECTOR_KEY_MAX
];
773 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_CONTROL
, control
);
774 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_BASIC
, basic
);
775 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
776 FLOW_DISSECTOR_KEY_ETH_ADDRS
, eth
);
777 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
778 FLOW_DISSECTOR_KEY_IPV4_ADDRS
, ipv4
);
779 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
780 FLOW_DISSECTOR_KEY_IPV6_ADDRS
, ipv6
);
781 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
782 FLOW_DISSECTOR_KEY_PORTS
, tp
);
783 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
784 FLOW_DISSECTOR_KEY_IP
, ip
);
785 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
786 FLOW_DISSECTOR_KEY_TCP
, tcp
);
787 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
788 FLOW_DISSECTOR_KEY_ICMP
, icmp
);
789 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
790 FLOW_DISSECTOR_KEY_ARP
, arp
);
791 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
792 FLOW_DISSECTOR_KEY_MPLS
, mpls
);
793 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
794 FLOW_DISSECTOR_KEY_VLAN
, vlan
);
795 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
796 FLOW_DISSECTOR_KEY_ENC_KEYID
, enc_key_id
);
797 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
798 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS
, enc_ipv4
);
799 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
800 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS
, enc_ipv6
);
801 if (FL_KEY_IS_MASKED(&mask
->key
, enc_ipv4
) ||
802 FL_KEY_IS_MASKED(&mask
->key
, enc_ipv6
))
803 FL_KEY_SET(keys
, cnt
, FLOW_DISSECTOR_KEY_ENC_CONTROL
,
805 FL_KEY_SET_IF_MASKED(&mask
->key
, keys
, cnt
,
806 FLOW_DISSECTOR_KEY_ENC_PORTS
, enc_tp
);
808 skb_flow_dissector_init(&head
->dissector
, keys
, cnt
);
811 static int fl_check_assign_mask(struct cls_fl_head
*head
,
812 struct fl_flow_mask
*mask
)
816 if (head
->mask_assigned
) {
817 if (!fl_mask_eq(&head
->mask
, mask
))
823 /* Mask is not assigned yet. So assign it and init hashtable
826 err
= fl_init_hashtable(head
, mask
);
829 memcpy(&head
->mask
, mask
, sizeof(head
->mask
));
830 head
->mask_assigned
= true;
832 fl_init_dissector(head
, mask
);
837 static int fl_set_parms(struct net
*net
, struct tcf_proto
*tp
,
838 struct cls_fl_filter
*f
, struct fl_flow_mask
*mask
,
839 unsigned long base
, struct nlattr
**tb
,
840 struct nlattr
*est
, bool ovr
)
844 err
= tcf_exts_validate(net
, tp
, tb
, est
, &f
->exts
, ovr
);
848 if (tb
[TCA_FLOWER_CLASSID
]) {
849 f
->res
.classid
= nla_get_u32(tb
[TCA_FLOWER_CLASSID
]);
850 tcf_bind_filter(tp
, &f
->res
, base
);
853 err
= fl_set_key(net
, tb
, &f
->key
, &mask
->key
);
857 fl_mask_update_range(mask
);
858 fl_set_masked_key(&f
->mkey
, &f
->key
, mask
);
863 static int fl_change(struct net
*net
, struct sk_buff
*in_skb
,
864 struct tcf_proto
*tp
, unsigned long base
,
865 u32 handle
, struct nlattr
**tca
,
866 void **arg
, bool ovr
)
868 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
869 struct cls_fl_filter
*fold
= *arg
;
870 struct cls_fl_filter
*fnew
;
872 struct fl_flow_mask mask
= {};
873 unsigned long idr_index
;
876 if (!tca
[TCA_OPTIONS
])
879 tb
= kcalloc(TCA_FLOWER_MAX
+ 1, sizeof(struct nlattr
*), GFP_KERNEL
);
883 err
= nla_parse_nested(tb
, TCA_FLOWER_MAX
, tca
[TCA_OPTIONS
],
888 if (fold
&& handle
&& fold
->handle
!= handle
) {
893 fnew
= kzalloc(sizeof(*fnew
), GFP_KERNEL
);
899 err
= tcf_exts_init(&fnew
->exts
, TCA_FLOWER_ACT
, 0);
904 err
= idr_alloc_ext(&head
->handle_idr
, fnew
, &idr_index
,
905 1, 0x80000000, GFP_KERNEL
);
908 fnew
->handle
= idr_index
;
911 /* user specifies a handle and it doesn't exist */
912 if (handle
&& !fold
) {
913 err
= idr_alloc_ext(&head
->handle_idr
, fnew
, &idr_index
,
914 handle
, handle
+ 1, GFP_KERNEL
);
917 fnew
->handle
= idr_index
;
920 if (tb
[TCA_FLOWER_FLAGS
]) {
921 fnew
->flags
= nla_get_u32(tb
[TCA_FLOWER_FLAGS
]);
923 if (!tc_flags_valid(fnew
->flags
)) {
929 err
= fl_set_parms(net
, tp
, fnew
, &mask
, base
, tb
, tca
[TCA_RATE
], ovr
);
933 err
= fl_check_assign_mask(head
, &mask
);
937 if (!tc_skip_sw(fnew
->flags
)) {
938 if (!fold
&& fl_lookup(head
, &fnew
->mkey
)) {
943 err
= rhashtable_insert_fast(&head
->ht
, &fnew
->ht_node
,
949 if (!tc_skip_hw(fnew
->flags
)) {
950 err
= fl_hw_replace_filter(tp
,
958 if (!tc_in_hw(fnew
->flags
))
959 fnew
->flags
|= TCA_CLS_FLAGS_NOT_IN_HW
;
962 if (!tc_skip_sw(fold
->flags
))
963 rhashtable_remove_fast(&head
->ht
, &fold
->ht_node
,
965 if (!tc_skip_hw(fold
->flags
))
966 fl_hw_destroy_filter(tp
, fold
);
972 fnew
->handle
= handle
;
973 idr_replace_ext(&head
->handle_idr
, fnew
, fnew
->handle
);
974 list_replace_rcu(&fold
->list
, &fnew
->list
);
975 tcf_unbind_filter(tp
, &fold
->res
);
976 call_rcu(&fold
->rcu
, fl_destroy_filter
);
978 list_add_tail_rcu(&fnew
->list
, &head
->filters
);
986 idr_remove_ext(&head
->handle_idr
, fnew
->handle
);
988 tcf_exts_destroy(&fnew
->exts
);
995 static int fl_delete(struct tcf_proto
*tp
, void *arg
, bool *last
)
997 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
998 struct cls_fl_filter
*f
= arg
;
1000 if (!tc_skip_sw(f
->flags
))
1001 rhashtable_remove_fast(&head
->ht
, &f
->ht_node
,
1004 *last
= list_empty(&head
->filters
);
1008 static void fl_walk(struct tcf_proto
*tp
, struct tcf_walker
*arg
)
1010 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
1011 struct cls_fl_filter
*f
;
1013 list_for_each_entry_rcu(f
, &head
->filters
, list
) {
1014 if (arg
->count
< arg
->skip
)
1016 if (arg
->fn(tp
, f
, arg
) < 0) {
1025 static int fl_dump_key_val(struct sk_buff
*skb
,
1026 void *val
, int val_type
,
1027 void *mask
, int mask_type
, int len
)
1031 if (!memchr_inv(mask
, 0, len
))
1033 err
= nla_put(skb
, val_type
, len
, val
);
1036 if (mask_type
!= TCA_FLOWER_UNSPEC
) {
1037 err
= nla_put(skb
, mask_type
, len
, mask
);
1044 static int fl_dump_key_mpls(struct sk_buff
*skb
,
1045 struct flow_dissector_key_mpls
*mpls_key
,
1046 struct flow_dissector_key_mpls
*mpls_mask
)
1050 if (!memchr_inv(mpls_mask
, 0, sizeof(*mpls_mask
)))
1052 if (mpls_mask
->mpls_ttl
) {
1053 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_TTL
,
1054 mpls_key
->mpls_ttl
);
1058 if (mpls_mask
->mpls_tc
) {
1059 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_TC
,
1064 if (mpls_mask
->mpls_label
) {
1065 err
= nla_put_u32(skb
, TCA_FLOWER_KEY_MPLS_LABEL
,
1066 mpls_key
->mpls_label
);
1070 if (mpls_mask
->mpls_bos
) {
1071 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_MPLS_BOS
,
1072 mpls_key
->mpls_bos
);
1079 static int fl_dump_key_ip(struct sk_buff
*skb
,
1080 struct flow_dissector_key_ip
*key
,
1081 struct flow_dissector_key_ip
*mask
)
1083 if (fl_dump_key_val(skb
, &key
->tos
, TCA_FLOWER_KEY_IP_TOS
, &mask
->tos
,
1084 TCA_FLOWER_KEY_IP_TOS_MASK
, sizeof(key
->tos
)) ||
1085 fl_dump_key_val(skb
, &key
->ttl
, TCA_FLOWER_KEY_IP_TTL
, &mask
->ttl
,
1086 TCA_FLOWER_KEY_IP_TTL_MASK
, sizeof(key
->ttl
)))
1092 static int fl_dump_key_vlan(struct sk_buff
*skb
,
1093 struct flow_dissector_key_vlan
*vlan_key
,
1094 struct flow_dissector_key_vlan
*vlan_mask
)
1098 if (!memchr_inv(vlan_mask
, 0, sizeof(*vlan_mask
)))
1100 if (vlan_mask
->vlan_id
) {
1101 err
= nla_put_u16(skb
, TCA_FLOWER_KEY_VLAN_ID
,
1106 if (vlan_mask
->vlan_priority
) {
1107 err
= nla_put_u8(skb
, TCA_FLOWER_KEY_VLAN_PRIO
,
1108 vlan_key
->vlan_priority
);
1115 static void fl_get_key_flag(u32 dissector_key
, u32 dissector_mask
,
1116 u32
*flower_key
, u32
*flower_mask
,
1117 u32 flower_flag_bit
, u32 dissector_flag_bit
)
1119 if (dissector_mask
& dissector_flag_bit
) {
1120 *flower_mask
|= flower_flag_bit
;
1121 if (dissector_key
& dissector_flag_bit
)
1122 *flower_key
|= flower_flag_bit
;
1126 static int fl_dump_key_flags(struct sk_buff
*skb
, u32 flags_key
, u32 flags_mask
)
1132 if (!memchr_inv(&flags_mask
, 0, sizeof(flags_mask
)))
1138 fl_get_key_flag(flags_key
, flags_mask
, &key
, &mask
,
1139 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT
, FLOW_DIS_IS_FRAGMENT
);
1141 _key
= cpu_to_be32(key
);
1142 _mask
= cpu_to_be32(mask
);
1144 err
= nla_put(skb
, TCA_FLOWER_KEY_FLAGS
, 4, &_key
);
1148 return nla_put(skb
, TCA_FLOWER_KEY_FLAGS_MASK
, 4, &_mask
);
1151 static int fl_dump(struct net
*net
, struct tcf_proto
*tp
, void *fh
,
1152 struct sk_buff
*skb
, struct tcmsg
*t
)
1154 struct cls_fl_head
*head
= rtnl_dereference(tp
->root
);
1155 struct cls_fl_filter
*f
= fh
;
1156 struct nlattr
*nest
;
1157 struct fl_flow_key
*key
, *mask
;
1162 t
->tcm_handle
= f
->handle
;
1164 nest
= nla_nest_start(skb
, TCA_OPTIONS
);
1166 goto nla_put_failure
;
1168 if (f
->res
.classid
&&
1169 nla_put_u32(skb
, TCA_FLOWER_CLASSID
, f
->res
.classid
))
1170 goto nla_put_failure
;
1173 mask
= &head
->mask
.key
;
1175 if (mask
->indev_ifindex
) {
1176 struct net_device
*dev
;
1178 dev
= __dev_get_by_index(net
, key
->indev_ifindex
);
1179 if (dev
&& nla_put_string(skb
, TCA_FLOWER_INDEV
, dev
->name
))
1180 goto nla_put_failure
;
1183 if (!tc_skip_hw(f
->flags
))
1184 fl_hw_update_stats(tp
, f
);
1186 if (fl_dump_key_val(skb
, key
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST
,
1187 mask
->eth
.dst
, TCA_FLOWER_KEY_ETH_DST_MASK
,
1188 sizeof(key
->eth
.dst
)) ||
1189 fl_dump_key_val(skb
, key
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC
,
1190 mask
->eth
.src
, TCA_FLOWER_KEY_ETH_SRC_MASK
,
1191 sizeof(key
->eth
.src
)) ||
1192 fl_dump_key_val(skb
, &key
->basic
.n_proto
, TCA_FLOWER_KEY_ETH_TYPE
,
1193 &mask
->basic
.n_proto
, TCA_FLOWER_UNSPEC
,
1194 sizeof(key
->basic
.n_proto
)))
1195 goto nla_put_failure
;
1197 if (fl_dump_key_mpls(skb
, &key
->mpls
, &mask
->mpls
))
1198 goto nla_put_failure
;
1200 if (fl_dump_key_vlan(skb
, &key
->vlan
, &mask
->vlan
))
1201 goto nla_put_failure
;
1203 if ((key
->basic
.n_proto
== htons(ETH_P_IP
) ||
1204 key
->basic
.n_proto
== htons(ETH_P_IPV6
)) &&
1205 (fl_dump_key_val(skb
, &key
->basic
.ip_proto
, TCA_FLOWER_KEY_IP_PROTO
,
1206 &mask
->basic
.ip_proto
, TCA_FLOWER_UNSPEC
,
1207 sizeof(key
->basic
.ip_proto
)) ||
1208 fl_dump_key_ip(skb
, &key
->ip
, &mask
->ip
)))
1209 goto nla_put_failure
;
1211 if (key
->control
.addr_type
== FLOW_DISSECTOR_KEY_IPV4_ADDRS
&&
1212 (fl_dump_key_val(skb
, &key
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC
,
1213 &mask
->ipv4
.src
, TCA_FLOWER_KEY_IPV4_SRC_MASK
,
1214 sizeof(key
->ipv4
.src
)) ||
1215 fl_dump_key_val(skb
, &key
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST
,
1216 &mask
->ipv4
.dst
, TCA_FLOWER_KEY_IPV4_DST_MASK
,
1217 sizeof(key
->ipv4
.dst
))))
1218 goto nla_put_failure
;
1219 else if (key
->control
.addr_type
== FLOW_DISSECTOR_KEY_IPV6_ADDRS
&&
1220 (fl_dump_key_val(skb
, &key
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC
,
1221 &mask
->ipv6
.src
, TCA_FLOWER_KEY_IPV6_SRC_MASK
,
1222 sizeof(key
->ipv6
.src
)) ||
1223 fl_dump_key_val(skb
, &key
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST
,
1224 &mask
->ipv6
.dst
, TCA_FLOWER_KEY_IPV6_DST_MASK
,
1225 sizeof(key
->ipv6
.dst
))))
1226 goto nla_put_failure
;
1228 if (key
->basic
.ip_proto
== IPPROTO_TCP
&&
1229 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC
,
1230 &mask
->tp
.src
, TCA_FLOWER_KEY_TCP_SRC_MASK
,
1231 sizeof(key
->tp
.src
)) ||
1232 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST
,
1233 &mask
->tp
.dst
, TCA_FLOWER_KEY_TCP_DST_MASK
,
1234 sizeof(key
->tp
.dst
)) ||
1235 fl_dump_key_val(skb
, &key
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS
,
1236 &mask
->tcp
.flags
, TCA_FLOWER_KEY_TCP_FLAGS_MASK
,
1237 sizeof(key
->tcp
.flags
))))
1238 goto nla_put_failure
;
1239 else if (key
->basic
.ip_proto
== IPPROTO_UDP
&&
1240 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC
,
1241 &mask
->tp
.src
, TCA_FLOWER_KEY_UDP_SRC_MASK
,
1242 sizeof(key
->tp
.src
)) ||
1243 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST
,
1244 &mask
->tp
.dst
, TCA_FLOWER_KEY_UDP_DST_MASK
,
1245 sizeof(key
->tp
.dst
))))
1246 goto nla_put_failure
;
1247 else if (key
->basic
.ip_proto
== IPPROTO_SCTP
&&
1248 (fl_dump_key_val(skb
, &key
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC
,
1249 &mask
->tp
.src
, TCA_FLOWER_KEY_SCTP_SRC_MASK
,
1250 sizeof(key
->tp
.src
)) ||
1251 fl_dump_key_val(skb
, &key
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST
,
1252 &mask
->tp
.dst
, TCA_FLOWER_KEY_SCTP_DST_MASK
,
1253 sizeof(key
->tp
.dst
))))
1254 goto nla_put_failure
;
1255 else if (key
->basic
.n_proto
== htons(ETH_P_IP
) &&
1256 key
->basic
.ip_proto
== IPPROTO_ICMP
&&
1257 (fl_dump_key_val(skb
, &key
->icmp
.type
,
1258 TCA_FLOWER_KEY_ICMPV4_TYPE
, &mask
->icmp
.type
,
1259 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK
,
1260 sizeof(key
->icmp
.type
)) ||
1261 fl_dump_key_val(skb
, &key
->icmp
.code
,
1262 TCA_FLOWER_KEY_ICMPV4_CODE
, &mask
->icmp
.code
,
1263 TCA_FLOWER_KEY_ICMPV4_CODE_MASK
,
1264 sizeof(key
->icmp
.code
))))
1265 goto nla_put_failure
;
1266 else if (key
->basic
.n_proto
== htons(ETH_P_IPV6
) &&
1267 key
->basic
.ip_proto
== IPPROTO_ICMPV6
&&
1268 (fl_dump_key_val(skb
, &key
->icmp
.type
,
1269 TCA_FLOWER_KEY_ICMPV6_TYPE
, &mask
->icmp
.type
,
1270 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK
,
1271 sizeof(key
->icmp
.type
)) ||
1272 fl_dump_key_val(skb
, &key
->icmp
.code
,
1273 TCA_FLOWER_KEY_ICMPV6_CODE
, &mask
->icmp
.code
,
1274 TCA_FLOWER_KEY_ICMPV6_CODE_MASK
,
1275 sizeof(key
->icmp
.code
))))
1276 goto nla_put_failure
;
1277 else if ((key
->basic
.n_proto
== htons(ETH_P_ARP
) ||
1278 key
->basic
.n_proto
== htons(ETH_P_RARP
)) &&
1279 (fl_dump_key_val(skb
, &key
->arp
.sip
,
1280 TCA_FLOWER_KEY_ARP_SIP
, &mask
->arp
.sip
,
1281 TCA_FLOWER_KEY_ARP_SIP_MASK
,
1282 sizeof(key
->arp
.sip
)) ||
1283 fl_dump_key_val(skb
, &key
->arp
.tip
,
1284 TCA_FLOWER_KEY_ARP_TIP
, &mask
->arp
.tip
,
1285 TCA_FLOWER_KEY_ARP_TIP_MASK
,
1286 sizeof(key
->arp
.tip
)) ||
1287 fl_dump_key_val(skb
, &key
->arp
.op
,
1288 TCA_FLOWER_KEY_ARP_OP
, &mask
->arp
.op
,
1289 TCA_FLOWER_KEY_ARP_OP_MASK
,
1290 sizeof(key
->arp
.op
)) ||
1291 fl_dump_key_val(skb
, key
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA
,
1292 mask
->arp
.sha
, TCA_FLOWER_KEY_ARP_SHA_MASK
,
1293 sizeof(key
->arp
.sha
)) ||
1294 fl_dump_key_val(skb
, key
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA
,
1295 mask
->arp
.tha
, TCA_FLOWER_KEY_ARP_THA_MASK
,
1296 sizeof(key
->arp
.tha
))))
1297 goto nla_put_failure
;
1299 if (key
->enc_control
.addr_type
== FLOW_DISSECTOR_KEY_IPV4_ADDRS
&&
1300 (fl_dump_key_val(skb
, &key
->enc_ipv4
.src
,
1301 TCA_FLOWER_KEY_ENC_IPV4_SRC
, &mask
->enc_ipv4
.src
,
1302 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK
,
1303 sizeof(key
->enc_ipv4
.src
)) ||
1304 fl_dump_key_val(skb
, &key
->enc_ipv4
.dst
,
1305 TCA_FLOWER_KEY_ENC_IPV4_DST
, &mask
->enc_ipv4
.dst
,
1306 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK
,
1307 sizeof(key
->enc_ipv4
.dst
))))
1308 goto nla_put_failure
;
1309 else if (key
->enc_control
.addr_type
== FLOW_DISSECTOR_KEY_IPV6_ADDRS
&&
1310 (fl_dump_key_val(skb
, &key
->enc_ipv6
.src
,
1311 TCA_FLOWER_KEY_ENC_IPV6_SRC
, &mask
->enc_ipv6
.src
,
1312 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK
,
1313 sizeof(key
->enc_ipv6
.src
)) ||
1314 fl_dump_key_val(skb
, &key
->enc_ipv6
.dst
,
1315 TCA_FLOWER_KEY_ENC_IPV6_DST
,
1316 &mask
->enc_ipv6
.dst
,
1317 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK
,
1318 sizeof(key
->enc_ipv6
.dst
))))
1319 goto nla_put_failure
;
1321 if (fl_dump_key_val(skb
, &key
->enc_key_id
, TCA_FLOWER_KEY_ENC_KEY_ID
,
1322 &mask
->enc_key_id
, TCA_FLOWER_UNSPEC
,
1323 sizeof(key
->enc_key_id
)) ||
1324 fl_dump_key_val(skb
, &key
->enc_tp
.src
,
1325 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT
,
1327 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK
,
1328 sizeof(key
->enc_tp
.src
)) ||
1329 fl_dump_key_val(skb
, &key
->enc_tp
.dst
,
1330 TCA_FLOWER_KEY_ENC_UDP_DST_PORT
,
1332 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK
,
1333 sizeof(key
->enc_tp
.dst
)))
1334 goto nla_put_failure
;
1336 if (fl_dump_key_flags(skb
, key
->control
.flags
, mask
->control
.flags
))
1337 goto nla_put_failure
;
1339 if (f
->flags
&& nla_put_u32(skb
, TCA_FLOWER_FLAGS
, f
->flags
))
1340 goto nla_put_failure
;
1342 if (tcf_exts_dump(skb
, &f
->exts
))
1343 goto nla_put_failure
;
1345 nla_nest_end(skb
, nest
);
1347 if (tcf_exts_dump_stats(skb
, &f
->exts
) < 0)
1348 goto nla_put_failure
;
1353 nla_nest_cancel(skb
, nest
);
1357 static void fl_bind_class(void *fh
, u32 classid
, unsigned long cl
)
1359 struct cls_fl_filter
*f
= fh
;
1361 if (f
&& f
->res
.classid
== classid
)
1365 static struct tcf_proto_ops cls_fl_ops __read_mostly
= {
1367 .classify
= fl_classify
,
1369 .destroy
= fl_destroy
,
1371 .change
= fl_change
,
1372 .delete = fl_delete
,
1375 .bind_class
= fl_bind_class
,
1376 .owner
= THIS_MODULE
,
1379 static int __init
cls_fl_init(void)
1381 return register_tcf_proto_ops(&cls_fl_ops
);
1384 static void __exit
cls_fl_exit(void)
1386 unregister_tcf_proto_ops(&cls_fl_ops
);
1389 module_init(cls_fl_init
);
1390 module_exit(cls_fl_exit
);
1392 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1393 MODULE_DESCRIPTION("Flower classifier");
1394 MODULE_LICENSE("GPL v2");