]>
git.proxmox.com Git - mirror_ovs.git/blob - ofproto/ofproto-dpif.h
1 /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License. */
15 #ifndef OFPROTO_DPIF_H
16 #define OFPROTO_DPIF_H 1
20 #include "fail-open.h"
23 #include "openvswitch/ofp-util.h"
24 #include "ovs-thread.h"
25 #include "ofproto-provider.h"
28 #include "ovs-thread.h"
30 /* Priority for internal rules created to handle recirculation */
31 #define RECIRC_RULE_PRIORITY 20
33 union user_action_cookie
;
34 struct dpif_flow_stats
;
36 struct ofproto_async_msg
;
40 struct OVS_LOCKABLE rule_dpif
;
41 struct OVS_LOCKABLE group_dpif
;
43 /* Number of implemented OpenFlow tables. */
44 enum { N_TABLES
= 255 };
45 enum { TBL_INTERNAL
= N_TABLES
- 1 }; /* Used for internal hidden rules. */
46 BUILD_ASSERT_DECL(N_TABLES
>= 2 && N_TABLES
<= 255);
48 /* Ofproto-dpif -- DPIF based ofproto implementation.
50 * Ofproto-dpif provides an ofproto implementation for those platforms which
51 * implement the netdev and dpif interface defined in netdev.h and dpif.h. The
52 * most important of which is the Linux Kernel Module (dpif-linux), but
53 * alternatives are supported such as a userspace only implementation
54 * (dpif-netdev), and a dummy implementation used for unit testing.
56 * Ofproto-dpif is divided into three major chunks.
59 * The main ofproto-dpif module is responsible for implementing the
60 * provider interface, installing and removing datapath flows, maintaining
61 * packet statistics, running protocols (BFD, LACP, STP, etc), and
62 * configuring relevant submodules.
64 * - ofproto-dpif-upcall.c
65 * Ofproto-dpif-upcall is responsible for retrieving upcalls from the kernel,
66 * processing miss upcalls, and handing more complex ones up to the main
67 * ofproto-dpif module. Miss upcall processing boils down to figuring out
68 * what each packet's actions are, executing them (i.e. asking the kernel to
69 * forward it), and handing it up to ofproto-dpif to decided whether or not
70 * to install a kernel flow.
72 * - ofproto-dpif-xlate.c
73 * Ofproto-dpif-xlate is responsible for translating OpenFlow actions into
74 * datapath actions. */
76 /* Stores the various features which the corresponding backer supports. */
77 struct dpif_backer_support
{
78 /* True if the datapath supports variable-length
79 * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions.
80 * False if the datapath supports only 8-byte (or shorter) userdata. */
81 bool variable_length_userdata
;
83 /* True if the datapath supports masked data in OVS_ACTION_ATTR_SET
85 bool masked_set_action
;
87 /* True if the datapath supports tnl_push and pop actions. */
90 /* True if the datapath supports OVS_FLOW_ATTR_UFID. */
93 /* True if the datapath supports OVS_ACTION_ATTR_TRUNC action. */
96 /* Each member represents support for related OVS_KEY_ATTR_* fields. */
97 struct odp_support odp
;
100 bool ofproto_dpif_get_enable_ufid(const struct dpif_backer
*backer
);
101 struct dpif_backer_support
*ofproto_dpif_get_support(const struct ofproto_dpif
*);
103 ovs_version_t
ofproto_dpif_get_tables_version(struct ofproto_dpif
*);
105 void ofproto_dpif_credit_table_stats(struct ofproto_dpif
*, uint8_t table_id
,
106 uint64_t n_matches
, uint64_t n_misses
);
110 struct rule_dpif
*rule_dpif_lookup_from_table(struct ofproto_dpif
*,
111 ovs_version_t
, struct flow
*,
112 struct flow_wildcards
*,
113 const struct dpif_flow_stats
*,
117 bool honor_table_miss
,
118 struct xlate_cache
*xcache
);
120 static inline void rule_dpif_ref(struct rule_dpif
*);
121 static inline void rule_dpif_unref(struct rule_dpif
*);
123 void rule_dpif_credit_stats(struct rule_dpif
*rule
,
124 const struct dpif_flow_stats
*);
126 static inline bool rule_dpif_is_fail_open(const struct rule_dpif
*);
127 static inline bool rule_dpif_is_table_miss(const struct rule_dpif
*);
128 static inline bool rule_dpif_is_internal(const struct rule_dpif
*);
130 uint8_t rule_dpif_get_table(const struct rule_dpif
*);
132 bool table_is_internal(uint8_t table_id
);
134 const struct rule_actions
*rule_dpif_get_actions(const struct rule_dpif
*);
135 void rule_set_recirc_id(struct rule
*, uint32_t id
);
137 ovs_be64
rule_dpif_get_flow_cookie(const struct rule_dpif
*rule
);
139 void rule_dpif_reduce_timeouts(struct rule_dpif
*rule
, uint16_t idle_timeout
,
140 uint16_t hard_timeout
);
142 void group_dpif_credit_stats(struct group_dpif
*,
143 struct ofputil_bucket
*,
144 const struct dpif_flow_stats
*);
145 struct group_dpif
*group_dpif_lookup(struct ofproto_dpif
*ofproto
,
146 uint32_t group_id
, ovs_version_t version
,
148 const struct ovs_list
*group_dpif_get_buckets(const struct group_dpif
*group
,
149 uint32_t *n_buckets
);
150 enum ofp11_group_type
group_dpif_get_type(const struct group_dpif
*group
);
151 const char *group_dpif_get_selection_method(const struct group_dpif
*group
);
152 uint64_t group_dpif_get_selection_method_param(const struct group_dpif
*group
);
153 const struct field_array
*group_dpif_get_fields(const struct group_dpif
*group
);
155 int ofproto_dpif_execute_actions(struct ofproto_dpif
*, ovs_version_t
,
156 const struct flow
*, struct rule_dpif
*,
157 const struct ofpact
*, size_t ofpacts_len
,
159 int ofproto_dpif_execute_actions__(struct ofproto_dpif
*, ovs_version_t
,
160 const struct flow
*, struct rule_dpif
*,
161 const struct ofpact
*, size_t ofpacts_len
,
162 int indentation
, int depth
, int resubmits
,
164 void ofproto_dpif_send_async_msg(struct ofproto_dpif
*,
165 struct ofproto_async_msg
*);
166 int ofproto_dpif_send_packet(const struct ofport_dpif
*, bool oam
,
168 enum ofperr
ofproto_dpif_flow_mod_init_for_learn(struct ofproto_dpif
*,
169 const struct ofputil_flow_mod
*,
170 struct ofproto_flow_mod
*);
172 struct ofport_dpif
*odp_port_to_ofport(const struct dpif_backer
*, odp_port_t
);
173 struct ofport_dpif
*ofp_port_to_ofport(const struct ofproto_dpif
*,
176 bool ofproto_dpif_backer_enabled(struct dpif_backer
* backer
);
178 int ofproto_dpif_add_internal_flow(struct ofproto_dpif
*,
179 const struct match
*, int priority
,
180 uint16_t idle_timeout
,
181 const struct ofpbuf
*ofpacts
,
182 struct rule
**rulep
);
183 int ofproto_dpif_delete_internal_flow(struct ofproto_dpif
*, struct match
*,
186 const struct uuid
*ofproto_dpif_get_uuid(const struct ofproto_dpif
*);
187 const struct tun_table
*ofproto_dpif_get_tun_tab(const struct ofproto_dpif
*);
189 /* struct rule_dpif has struct rule as it's first member. */
190 #define RULE_CAST(RULE) ((struct rule *)RULE)
191 #define GROUP_CAST(GROUP) ((struct ofgroup *)GROUP)
193 static inline struct group_dpif
* group_dpif_ref(struct group_dpif
*group
)
196 ofproto_group_ref(GROUP_CAST(group
));
201 static inline void group_dpif_unref(struct group_dpif
*group
)
204 ofproto_group_unref(GROUP_CAST(group
));
208 static inline void rule_dpif_ref(struct rule_dpif
*rule
)
211 ofproto_rule_ref(RULE_CAST(rule
));
215 static inline void rule_dpif_unref(struct rule_dpif
*rule
)
218 ofproto_rule_unref(RULE_CAST(rule
));
222 static inline bool rule_dpif_is_fail_open(const struct rule_dpif
*rule
)
224 return is_fail_open_rule(RULE_CAST(rule
));
227 static inline bool rule_dpif_is_table_miss(const struct rule_dpif
*rule
)
229 return rule_is_table_miss(RULE_CAST(rule
));
232 /* Returns true if 'rule' is an internal rule, false otherwise. */
233 static inline bool rule_dpif_is_internal(const struct rule_dpif
*rule
)
235 return RULE_CAST(rule
)->table_id
== TBL_INTERNAL
;
240 bool ovs_native_tunneling_is_on(struct ofproto_dpif
*ofproto
);
241 #endif /* ofproto-dpif.h */