2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <sys/types.h>
20 #include <netinet/in.h>
24 #include "byte-order.h"
25 #include "openflow/nicira-ext.h"
26 #include "openflow/openflow.h"
31 struct dpif_flow_stats;
33 struct flow_wildcards;
39 /* This sequence number should be incremented whenever anything involving flows
40 * or the wildcarding of flows changes. This will cause build assertion
41 * failures in places which likely need to be updated. */
42 #define FLOW_WC_SEQ 33
44 /* Number of Open vSwitch extension 32-bit registers. */
46 BUILD_ASSERT_DECL(FLOW_N_REGS <= NXM_NX_MAX_REGS);
47 BUILD_ASSERT_DECL(FLOW_N_REGS % 2 == 0); /* Even. */
49 /* Number of OpenFlow 1.5+ 64-bit registers.
51 * Each of these overlays a pair of Open vSwitch 32-bit registers, so there
52 * are half as many of them.*/
53 #define FLOW_N_XREGS (FLOW_N_REGS / 2)
55 /* Used for struct flow's dl_type member for frames that have no Ethernet
56 * type, that is, pure 802.2 frames. */
57 #define FLOW_DL_TYPE_NONE 0x5ff
59 /* Fragment bits, used for IPv4 and IPv6, always zero for non-IP flows. */
60 #define FLOW_NW_FRAG_ANY (1 << 0) /* Set for any IP frag. */
61 #define FLOW_NW_FRAG_LATER (1 << 1) /* Set for IP frag with nonzero offset. */
62 #define FLOW_NW_FRAG_MASK (FLOW_NW_FRAG_ANY | FLOW_NW_FRAG_LATER)
64 BUILD_ASSERT_DECL(FLOW_NW_FRAG_ANY == NX_IP_FRAG_ANY);
65 BUILD_ASSERT_DECL(FLOW_NW_FRAG_LATER == NX_IP_FRAG_LATER);
67 /* Some flags are exposed through OpenFlow while others are used only
71 #define FLOW_TNL_F_OAM (1 << 0)
73 #define FLOW_TNL_PUB_F_MASK ((1 << 1) - 1)
74 BUILD_ASSERT_DECL(FLOW_TNL_F_OAM == NX_TUN_FLAG_OAM);
77 #define FLOW_TNL_F_DONT_FRAGMENT (1 << 1)
78 #define FLOW_TNL_F_CSUM (1 << 2)
79 #define FLOW_TNL_F_KEY (1 << 3)
81 #define FLOW_TNL_F_MASK ((1 << 4) - 1)
83 const char *flow_tun_flag_to_string(uint32_t flags);
85 /* Maximum number of supported MPLS labels. */
86 #define FLOW_MAX_MPLS_LABELS 3
89 * A flow in the network.
91 * Must be initialized to all zeros to make any compiler-induced padding
92 * zeroed. Helps also in keeping unused fields (such as mutually exclusive
93 * IPv4 and IPv6 addresses) zeroed out.
95 * The meaning of 'in_port' is context-dependent. In most cases, it is a
96 * 16-bit OpenFlow 1.0 port number. In the software datapath interface (dpif)
97 * layer and its implementations (e.g. dpif-netlink, dpif-netdev), it is
98 * instead a 32-bit datapath port number.
100 * The fields are organized in four segments to facilitate staged lookup, where
101 * lower layer fields are first used to determine if the later fields need to
102 * be looked at. This enables better wildcarding for datapath flows.
104 * NOTE: Order of the fields is significant, any change in the order must be
105 * reflected in miniflow_extract()!
109 struct flow_tnl tunnel; /* Encapsulating tunnel parameters. */
110 ovs_be64 metadata; /* OpenFlow Metadata. */
111 uint32_t regs[FLOW_N_REGS]; /* Registers. */
112 uint32_t skb_priority; /* Packet priority for QoS. */
113 uint32_t pkt_mark; /* Packet mark. */
114 uint32_t dp_hash; /* Datapath computed hash value. The exact
115 * computation is opaque to the user space. */
116 union flow_in_port in_port; /* Input port.*/
117 uint32_t recirc_id; /* Must be exact match. */
118 uint32_t conj_id; /* Conjunction ID. */
119 ofp_port_t actset_output; /* Output port in action set. */
120 uint8_t pad1[6]; /* Pad to 64 bits. */
122 /* L2, Order the same as in the Ethernet header! (64-bit aligned) */
123 uint8_t dl_dst[ETH_ADDR_LEN]; /* Ethernet destination address. */
124 uint8_t dl_src[ETH_ADDR_LEN]; /* Ethernet source address. */
125 ovs_be16 dl_type; /* Ethernet frame type. */
126 ovs_be16 vlan_tci; /* If 802.1Q, TCI | VLAN_CFI; otherwise 0. */
127 ovs_be32 mpls_lse[ROUND_UP(FLOW_MAX_MPLS_LABELS, 2)]; /* MPLS label stack
129 /* L3 (64-bit aligned) */
130 ovs_be32 nw_src; /* IPv4 source address. */
131 ovs_be32 nw_dst; /* IPv4 destination address. */
132 struct in6_addr ipv6_src; /* IPv6 source address. */
133 struct in6_addr ipv6_dst; /* IPv6 destination address. */
134 ovs_be32 ipv6_label; /* IPv6 flow label. */
135 uint8_t nw_frag; /* FLOW_FRAG_* flags. */
136 uint8_t nw_tos; /* IP ToS (including DSCP and ECN). */
137 uint8_t nw_ttl; /* IP TTL/Hop Limit. */
138 uint8_t nw_proto; /* IP protocol or low 8 bits of ARP opcode. */
139 struct in6_addr nd_target; /* IPv6 neighbor discovery (ND) target. */
140 uint8_t arp_sha[ETH_ADDR_LEN]; /* ARP/ND source hardware address. */
141 uint8_t arp_tha[ETH_ADDR_LEN]; /* ARP/ND target hardware address. */
142 ovs_be16 tcp_flags; /* TCP flags. With L3 to avoid matching L4. */
143 ovs_be16 pad2; /* Pad to 64 bits. */
145 /* L4 (64-bit aligned) */
146 ovs_be16 tp_src; /* TCP/UDP/SCTP source port. */
147 ovs_be16 tp_dst; /* TCP/UDP/SCTP destination port. */
148 ovs_be32 igmp_group_ip4; /* IGMP group IPv4 address.
149 * Keep last for BUILD_ASSERT_DECL below. */
151 BUILD_ASSERT_DECL(sizeof(struct flow) % sizeof(uint64_t) == 0);
153 #define FLOW_U64S (sizeof(struct flow) / sizeof(uint64_t))
155 /* Some flow fields are mutually exclusive or only appear within the flow
156 * pipeline. IPv6 headers are bigger than IPv4 and MPLS, and IPv6 ND packets
157 * are bigger than TCP,UDP and IGMP packets. */
158 #define FLOW_MAX_PACKET_U64S (FLOW_U64S \
159 /* Unused in datapath */ - FLOW_U64_SIZE(regs) \
160 - FLOW_U64_SIZE(metadata) \
161 /* L2.5/3 */ - FLOW_U64_SIZE(nw_src) /* incl. nw_dst */ \
162 - FLOW_U64_SIZE(mpls_lse) \
163 /* L4 */ - FLOW_U64_SIZE(tp_src) \
166 /* Remember to update FLOW_WC_SEQ when changing 'struct flow'. */
167 BUILD_ASSERT_DECL(offsetof(struct flow, igmp_group_ip4) + sizeof(uint32_t)
168 == sizeof(struct flow_tnl) + 192
169 && FLOW_WC_SEQ == 33);
171 /* Incremental points at which flow classification may be performed in
173 * This is located here since this is dependent on the structure of the
174 * struct flow defined above:
175 * Each offset must be on a distinct, successive U64 boundary strictly
176 * within the struct flow. */
178 FLOW_SEGMENT_1_ENDS_AT = offsetof(struct flow, dl_dst),
179 FLOW_SEGMENT_2_ENDS_AT = offsetof(struct flow, nw_src),
180 FLOW_SEGMENT_3_ENDS_AT = offsetof(struct flow, tp_src),
182 BUILD_ASSERT_DECL(FLOW_SEGMENT_1_ENDS_AT % sizeof(uint64_t) == 0);
183 BUILD_ASSERT_DECL(FLOW_SEGMENT_2_ENDS_AT % sizeof(uint64_t) == 0);
184 BUILD_ASSERT_DECL(FLOW_SEGMENT_3_ENDS_AT % sizeof(uint64_t) == 0);
185 BUILD_ASSERT_DECL( 0 < FLOW_SEGMENT_1_ENDS_AT);
186 BUILD_ASSERT_DECL(FLOW_SEGMENT_1_ENDS_AT < FLOW_SEGMENT_2_ENDS_AT);
187 BUILD_ASSERT_DECL(FLOW_SEGMENT_2_ENDS_AT < FLOW_SEGMENT_3_ENDS_AT);
188 BUILD_ASSERT_DECL(FLOW_SEGMENT_3_ENDS_AT < sizeof(struct flow));
190 extern const uint8_t flow_segment_u64s[];
192 void flow_extract(struct dp_packet *, struct flow *);
194 void flow_zero_wildcards(struct flow *, const struct flow_wildcards *);
195 void flow_unwildcard_tp_ports(const struct flow *, struct flow_wildcards *);
196 void flow_get_metadata(const struct flow *, struct match *flow_metadata);
198 char *flow_to_string(const struct flow *);
199 void format_flags(struct ds *ds, const char *(*bit_to_string)(uint32_t),
200 uint32_t flags, char del);
201 void format_flags_masked(struct ds *ds, const char *name,
202 const char *(*bit_to_string)(uint32_t),
203 uint32_t flags, uint32_t mask, uint32_t max_mask);
204 int parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
205 char end, const char *field_name, char **res_string,
206 uint32_t *res_flags, uint32_t allowed, uint32_t *res_mask);
208 void flow_format(struct ds *, const struct flow *);
209 void flow_print(FILE *, const struct flow *);
210 static inline int flow_compare_3way(const struct flow *, const struct flow *);
211 static inline bool flow_equal(const struct flow *, const struct flow *);
212 static inline size_t flow_hash(const struct flow *, uint32_t basis);
214 void flow_set_dl_vlan(struct flow *, ovs_be16 vid);
215 void flow_set_vlan_vid(struct flow *, ovs_be16 vid);
216 void flow_set_vlan_pcp(struct flow *, uint8_t pcp);
218 int flow_count_mpls_labels(const struct flow *, struct flow_wildcards *);
219 int flow_count_common_mpls_labels(const struct flow *a, int an,
220 const struct flow *b, int bn,
221 struct flow_wildcards *wc);
222 void flow_push_mpls(struct flow *, int n, ovs_be16 mpls_eth_type,
223 struct flow_wildcards *);
224 bool flow_pop_mpls(struct flow *, int n, ovs_be16 eth_type,
225 struct flow_wildcards *);
226 void flow_set_mpls_label(struct flow *, int idx, ovs_be32 label);
227 void flow_set_mpls_ttl(struct flow *, int idx, uint8_t ttl);
228 void flow_set_mpls_tc(struct flow *, int idx, uint8_t tc);
229 void flow_set_mpls_bos(struct flow *, int idx, uint8_t stack);
230 void flow_set_mpls_lse(struct flow *, int idx, ovs_be32 lse);
232 void flow_compose(struct dp_packet *, const struct flow *);
234 static inline uint64_t
235 flow_get_xreg(const struct flow *flow, int idx)
237 return ((uint64_t) flow->regs[idx * 2] << 32) | flow->regs[idx * 2 + 1];
241 flow_set_xreg(struct flow *flow, int idx, uint64_t value)
243 flow->regs[idx * 2] = value >> 32;
244 flow->regs[idx * 2 + 1] = value;
248 flow_compare_3way(const struct flow *a, const struct flow *b)
250 return memcmp(a, b, sizeof *a);
254 flow_equal(const struct flow *a, const struct flow *b)
256 return !flow_compare_3way(a, b);
260 flow_hash(const struct flow *flow, uint32_t basis)
262 return hash_words64((const uint64_t *)flow,
263 sizeof *flow / sizeof(uint64_t), basis);
266 static inline uint16_t
267 ofp_to_u16(ofp_port_t ofp_port)
269 return (OVS_FORCE uint16_t) ofp_port;
272 static inline uint32_t
273 odp_to_u32(odp_port_t odp_port)
275 return (OVS_FORCE uint32_t) odp_port;
278 static inline uint32_t
279 ofp11_to_u32(ofp11_port_t ofp11_port)
281 return (OVS_FORCE uint32_t) ofp11_port;
284 static inline ofp_port_t
285 u16_to_ofp(uint16_t port)
287 return OFP_PORT_C(port);
290 static inline odp_port_t
291 u32_to_odp(uint32_t port)
293 return ODP_PORT_C(port);
296 static inline ofp11_port_t
297 u32_to_ofp11(uint32_t port)
299 return OFP11_PORT_C(port);
302 static inline uint32_t
303 hash_ofp_port(ofp_port_t ofp_port)
305 return hash_int(ofp_to_u16(ofp_port), 0);
308 static inline uint32_t
309 hash_odp_port(odp_port_t odp_port)
311 return hash_int(odp_to_u32(odp_port), 0);
314 /* Wildcards for a flow.
316 * A 1-bit in each bit in 'masks' indicates that the corresponding bit of
317 * the flow is significant (must match). A 0-bit indicates that the
318 * corresponding bit of the flow is wildcarded (need not match). */
319 struct flow_wildcards {
323 #define WC_MASK_FIELD(WC, FIELD) \
324 memset(&(WC)->masks.FIELD, 0xff, sizeof (WC)->masks.FIELD)
325 #define WC_UNMASK_FIELD(WC, FIELD) \
326 memset(&(WC)->masks.FIELD, 0, sizeof (WC)->masks.FIELD)
328 void flow_wildcards_init_catchall(struct flow_wildcards *);
330 void flow_wildcards_init_for_packet(struct flow_wildcards *,
331 const struct flow *);
332 uint64_t flow_wc_map(const struct flow *);
334 void flow_wildcards_clear_non_packet_fields(struct flow_wildcards *);
336 bool flow_wildcards_is_catchall(const struct flow_wildcards *);
338 void flow_wildcards_set_reg_mask(struct flow_wildcards *,
339 int idx, uint32_t mask);
340 void flow_wildcards_set_xreg_mask(struct flow_wildcards *,
341 int idx, uint64_t mask);
343 void flow_wildcards_and(struct flow_wildcards *dst,
344 const struct flow_wildcards *src1,
345 const struct flow_wildcards *src2);
346 void flow_wildcards_or(struct flow_wildcards *dst,
347 const struct flow_wildcards *src1,
348 const struct flow_wildcards *src2);
349 bool flow_wildcards_has_extra(const struct flow_wildcards *,
350 const struct flow_wildcards *);
351 uint32_t flow_wildcards_hash(const struct flow_wildcards *, uint32_t basis);
352 bool flow_wildcards_equal(const struct flow_wildcards *,
353 const struct flow_wildcards *);
354 uint32_t flow_hash_5tuple(const struct flow *flow, uint32_t basis);
355 uint32_t flow_hash_symmetric_l4(const struct flow *flow, uint32_t basis);
356 uint32_t flow_hash_symmetric_l3l4(const struct flow *flow, uint32_t basis,
357 bool inc_udp_ports );
359 /* Initialize a flow with random fields that matter for nx_hash_fields. */
360 void flow_random_hash_fields(struct flow *);
361 void flow_mask_hash_fields(const struct flow *, struct flow_wildcards *,
362 enum nx_hash_fields);
363 uint32_t flow_hash_fields(const struct flow *, enum nx_hash_fields,
365 const char *flow_hash_fields_to_str(enum nx_hash_fields);
366 bool flow_hash_fields_valid(enum nx_hash_fields);
368 uint32_t flow_hash_in_wildcards(const struct flow *,
369 const struct flow_wildcards *,
372 bool flow_equal_except(const struct flow *a, const struct flow *b,
373 const struct flow_wildcards *);
375 /* Compressed flow. */
377 /* Maximum number of 64-bit words supported. */
378 BUILD_ASSERT_DECL(FLOW_U64S <= 64);
380 /* A sparse representation of a "struct flow".
382 * A "struct flow" is fairly large and tends to be mostly zeros. Sparse
383 * representation has two advantages. First, it saves memory and, more
384 * importantly, minimizes the number of accessed cache lines. Second, it saves
385 * time when the goal is to iterate over only the nonzero parts of the struct.
387 * The 'map' member holds one bit for each uint64_t in a "struct flow". Each
388 * 0-bit indicates that the corresponding uint64_t is zero, each 1-bit that it
389 * *may* be nonzero (see below how this applies to minimasks).
391 * Elements in values array are allowed to be zero. This is useful for "struct
392 * minimatch", for which ensuring that the miniflow and minimask members have
393 * same 'map' allows optimization. This allowance applies only to a miniflow
394 * that is not a mask. That is, a minimask may NOT have zero elements in
397 * A miniflow is always dynamically allocated so that the 'values' array has as
398 * many elements as there are 1-bits in 'map'. */
403 BUILD_ASSERT_DECL(sizeof(struct miniflow) == sizeof(uint64_t));
405 #define MINIFLOW_VALUES_SIZE(COUNT) ((COUNT) * sizeof(uint64_t))
409 /* The 'dst' must follow with buffer space for FLOW_U64S 64-bit units.
410 * 'dst->map' is ignored on input and set on output to indicate which fields
412 void miniflow_extract(struct dp_packet *packet, struct miniflow *dst);
413 void miniflow_map_init(struct miniflow *, const struct flow *);
414 size_t miniflow_alloc(struct miniflow *dsts[], size_t n,
415 const struct miniflow *src);
416 void miniflow_init(struct miniflow *, const struct flow *);
417 void miniflow_clone(struct miniflow *, const struct miniflow *,
419 struct miniflow * miniflow_create(const struct flow *);
421 void miniflow_expand(const struct miniflow *, struct flow *);
423 static inline uint64_t flow_u64_value(const struct flow *flow, size_t index)
425 return ((uint64_t *)(flow))[index];
428 static inline uint64_t *flow_u64_lvalue(struct flow *flow, size_t index)
430 return &((uint64_t *)(flow))[index];
434 flow_get_next_in_map(const struct flow *flow, uint64_t map, uint64_t *value)
437 *value = flow_u64_value(flow, raw_ctz(map));
443 /* Iterate through all flow u64 values specified by 'MAP'. */
444 #define FLOW_FOR_EACH_IN_MAP(VALUE, FLOW, MAP) \
445 for (uint64_t map__ = (MAP); \
446 flow_get_next_in_map(FLOW, map__, &(VALUE)); \
447 map__ = zero_rightmost_1bit(map__))
449 /* Iterate through all struct flow u64 indices specified by 'MAP'. */
450 #define MAP_FOR_EACH_INDEX(U64IDX, MAP) \
451 for (uint64_t map__ = (MAP); \
452 map__ && ((U64IDX) = raw_ctz(map__), true); \
453 map__ = zero_rightmost_1bit(map__))
455 #define FLOW_U64_SIZE(FIELD) \
456 DIV_ROUND_UP(sizeof(((struct flow *)0)->FIELD), sizeof(uint64_t))
458 #define MINIFLOW_MAP(FIELD) \
459 (((UINT64_C(1) << FLOW_U64_SIZE(FIELD)) - 1) \
460 << (offsetof(struct flow, FIELD) / sizeof(uint64_t)))
462 struct mf_for_each_in_map_aux {
463 const uint64_t *values;
469 mf_get_next_in_map(struct mf_for_each_in_map_aux *aux, uint64_t *value)
472 uint64_t rm1bit = rightmost_1bit(aux->map);
475 if (aux->fmap & rm1bit) {
476 /* Advance 'aux->values' to point to the value for 'rm1bit'. */
477 uint64_t trash = aux->fmap & (rm1bit - 1);
480 aux->values += count_1bits(trash);
483 /* Retrieve the value for 'rm1bit' then advance past it. */
485 *value = *aux->values++;
495 /* Iterate through all miniflow u64 values specified by 'MAP'. */
496 #define MINIFLOW_FOR_EACH_IN_MAP(VALUE, FLOW, MAP) \
497 for (struct mf_for_each_in_map_aux aux__ \
498 = { (FLOW)->values, (FLOW)->map, MAP }; \
499 mf_get_next_in_map(&aux__, &(VALUE)); \
502 /* This can be used when it is known that 'u64_idx' is set in 'map'. */
503 static inline uint64_t
504 miniflow_values_get__(const uint64_t *values, uint64_t map, int u64_idx)
506 return values[count_1bits(map & ((UINT64_C(1) << u64_idx) - 1))];
509 /* This can be used when it is known that 'u64_idx' is set in
510 * the map of 'mf'. */
511 static inline uint64_t
512 miniflow_get__(const struct miniflow *mf, int u64_idx)
514 return miniflow_values_get__(mf->values, mf->map, u64_idx);
517 /* Get the value of 'FIELD' of an up to 8 byte wide integer type 'TYPE' of
519 #define MINIFLOW_GET_TYPE(MF, TYPE, OFS) \
520 (((MF)->map & (UINT64_C(1) << (OFS) / sizeof(uint64_t))) \
521 ? ((OVS_FORCE const TYPE *) \
523 + count_1bits((MF)->map & \
524 ((UINT64_C(1) << (OFS) / sizeof(uint64_t)) - 1)))) \
525 [(OFS) % sizeof(uint64_t) / sizeof(TYPE)] \
528 #define MINIFLOW_GET_U8(FLOW, FIELD) \
529 MINIFLOW_GET_TYPE(FLOW, uint8_t, offsetof(struct flow, FIELD))
530 #define MINIFLOW_GET_U16(FLOW, FIELD) \
531 MINIFLOW_GET_TYPE(FLOW, uint16_t, offsetof(struct flow, FIELD))
532 #define MINIFLOW_GET_BE16(FLOW, FIELD) \
533 MINIFLOW_GET_TYPE(FLOW, ovs_be16, offsetof(struct flow, FIELD))
534 #define MINIFLOW_GET_U32(FLOW, FIELD) \
535 MINIFLOW_GET_TYPE(FLOW, uint32_t, offsetof(struct flow, FIELD))
536 #define MINIFLOW_GET_BE32(FLOW, FIELD) \
537 MINIFLOW_GET_TYPE(FLOW, ovs_be32, offsetof(struct flow, FIELD))
538 #define MINIFLOW_GET_U64(FLOW, FIELD) \
539 MINIFLOW_GET_TYPE(FLOW, uint64_t, offsetof(struct flow, FIELD))
540 #define MINIFLOW_GET_BE64(FLOW, FIELD) \
541 MINIFLOW_GET_TYPE(FLOW, ovs_be64, offsetof(struct flow, FIELD))
543 static inline uint64_t miniflow_get(const struct miniflow *,
544 unsigned int u64_ofs);
545 static inline uint32_t miniflow_get_u32(const struct miniflow *,
546 unsigned int u32_ofs);
547 static inline ovs_be32 miniflow_get_be32(const struct miniflow *,
548 unsigned int be32_ofs);
549 static inline uint16_t miniflow_get_vid(const struct miniflow *);
550 static inline uint16_t miniflow_get_tcp_flags(const struct miniflow *);
551 static inline ovs_be64 miniflow_get_metadata(const struct miniflow *);
553 bool miniflow_equal(const struct miniflow *a, const struct miniflow *b);
554 bool miniflow_equal_in_minimask(const struct miniflow *a,
555 const struct miniflow *b,
556 const struct minimask *);
557 bool miniflow_equal_flow_in_minimask(const struct miniflow *a,
558 const struct flow *b,
559 const struct minimask *);
560 uint32_t miniflow_hash_5tuple(const struct miniflow *flow, uint32_t basis);
563 /* Compressed flow wildcards. */
565 /* A sparse representation of a "struct flow_wildcards".
567 * See the large comment on struct miniflow for details.
569 * Note: While miniflow can have zero data for a 1-bit in the map,
570 * a minimask may not! We rely on this in the implementation. */
572 struct miniflow masks;
575 void minimask_init(struct minimask *, const struct flow_wildcards *);
576 struct minimask * minimask_create(const struct flow_wildcards *);
577 void minimask_combine(struct minimask *dst,
578 const struct minimask *a, const struct minimask *b,
579 uint64_t storage[FLOW_U64S]);
581 void minimask_expand(const struct minimask *, struct flow_wildcards *);
583 static inline uint32_t minimask_get_u32(const struct minimask *,
584 unsigned int u32_ofs);
585 static inline ovs_be32 minimask_get_be32(const struct minimask *,
586 unsigned int be32_ofs);
587 static inline uint16_t minimask_get_vid_mask(const struct minimask *);
588 static inline ovs_be64 minimask_get_metadata_mask(const struct minimask *);
590 bool minimask_equal(const struct minimask *a, const struct minimask *b);
591 bool minimask_has_extra(const struct minimask *, const struct minimask *);
594 /* Returns true if 'mask' matches every packet, false if 'mask' fixes any bits
597 minimask_is_catchall(const struct minimask *mask)
599 /* For every 1-bit in mask's map, the corresponding value is non-zero,
600 * so the only way the mask can not fix any bits or fields is for the
601 * map the be zero. */
602 return mask->masks.map == 0;
605 /* Returns the uint64_t that would be at byte offset '8 * u64_ofs' if 'flow'
606 * were expanded into a "struct flow". */
607 static inline uint64_t miniflow_get(const struct miniflow *flow,
608 unsigned int u64_ofs)
610 return flow->map & (UINT64_C(1) << u64_ofs)
611 ? miniflow_get__(flow, u64_ofs) : 0;
614 static inline uint32_t miniflow_get_u32(const struct miniflow *flow,
615 unsigned int u32_ofs)
617 uint64_t value = miniflow_get(flow, u32_ofs / 2);
620 return (u32_ofs & 1) ? value : value >> 32;
622 return (u32_ofs & 1) ? value >> 32 : value;
626 static inline ovs_be32 miniflow_get_be32(const struct miniflow *flow,
627 unsigned int be32_ofs)
629 return (OVS_FORCE ovs_be32)miniflow_get_u32(flow, be32_ofs);
632 /* Returns the VID within the vlan_tci member of the "struct flow" represented
634 static inline uint16_t
635 miniflow_get_vid(const struct miniflow *flow)
637 ovs_be16 tci = MINIFLOW_GET_BE16(flow, vlan_tci);
638 return vlan_tci_to_vid(tci);
641 /* Returns the uint32_t that would be at byte offset '4 * u32_ofs' if 'mask'
642 * were expanded into a "struct flow_wildcards". */
643 static inline uint32_t
644 minimask_get_u32(const struct minimask *mask, unsigned int u32_ofs)
646 return miniflow_get_u32(&mask->masks, u32_ofs);
649 static inline ovs_be32
650 minimask_get_be32(const struct minimask *mask, unsigned int be32_ofs)
652 return (OVS_FORCE ovs_be32)minimask_get_u32(mask, be32_ofs);
655 /* Returns the VID mask within the vlan_tci member of the "struct
656 * flow_wildcards" represented by 'mask'. */
657 static inline uint16_t
658 minimask_get_vid_mask(const struct minimask *mask)
660 return miniflow_get_vid(&mask->masks);
663 /* Returns the value of the "tcp_flags" field in 'flow'. */
664 static inline uint16_t
665 miniflow_get_tcp_flags(const struct miniflow *flow)
667 return ntohs(MINIFLOW_GET_BE16(flow, tcp_flags));
670 /* Returns the value of the OpenFlow 1.1+ "metadata" field in 'flow'. */
671 static inline ovs_be64
672 miniflow_get_metadata(const struct miniflow *flow)
674 return MINIFLOW_GET_BE64(flow, metadata);
677 /* Returns the mask for the OpenFlow 1.1+ "metadata" field in 'mask'.
679 * The return value is all-1-bits if 'mask' matches on the whole value of the
680 * metadata field, all-0-bits if 'mask' entirely wildcards the metadata field,
681 * or some other value if the metadata field is partially matched, partially
683 static inline ovs_be64
684 minimask_get_metadata_mask(const struct minimask *mask)
686 return MINIFLOW_GET_BE64(&mask->masks, metadata);
689 /* Perform a bitwise OR of miniflow 'src' flow data with the equivalent
690 * fields in 'dst', storing the result in 'dst'. */
692 flow_union_with_miniflow(struct flow *dst, const struct miniflow *src)
694 uint64_t *dst_u64 = (uint64_t *) dst;
695 const uint64_t *p = src->values;
698 MAP_FOR_EACH_INDEX(idx, src->map) {
699 dst_u64[idx] |= *p++;
704 pkt_metadata_from_flow(struct pkt_metadata *md, const struct flow *flow)
706 md->recirc_id = flow->recirc_id;
707 md->dp_hash = flow->dp_hash;
708 md->tunnel = flow->tunnel;
709 md->skb_priority = flow->skb_priority;
710 md->pkt_mark = flow->pkt_mark;
711 md->in_port = flow->in_port;
714 static inline bool is_ip_any(const struct flow *flow)
716 return dl_type_is_ip_any(flow->dl_type);
719 static inline bool is_icmpv4(const struct flow *flow)
721 return (flow->dl_type == htons(ETH_TYPE_IP)
722 && flow->nw_proto == IPPROTO_ICMP);
725 static inline bool is_icmpv6(const struct flow *flow)
727 return (flow->dl_type == htons(ETH_TYPE_IPV6)
728 && flow->nw_proto == IPPROTO_ICMPV6);
731 static inline bool is_igmp(const struct flow *flow)
733 return (flow->dl_type == htons(ETH_TYPE_IP)
734 && flow->nw_proto == IPPROTO_IGMP);
737 static inline bool is_mld(const struct flow *flow)
739 return is_icmpv6(flow)
740 && (flow->tp_src == htons(MLD_QUERY)
741 || flow->tp_src == htons(MLD_REPORT)
742 || flow->tp_src == htons(MLD_DONE)
743 || flow->tp_src == htons(MLD2_REPORT));
746 static inline bool is_mld_query(const struct flow *flow)
748 return is_icmpv6(flow) && flow->tp_src == htons(MLD_QUERY);
751 static inline bool is_mld_report(const struct flow *flow)
753 return is_mld(flow) && !is_mld_query(flow);
756 static inline bool is_stp(const struct flow *flow)
758 return (eth_addr_equals(flow->dl_dst, eth_addr_stp)
759 && flow->dl_type == htons(FLOW_DL_TYPE_NONE));