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064af421 BP |
1 | /* |
2 | * Copyright (c) 2009 Nicira Networks. | |
3 | * | |
a14bc59f BP |
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: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
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. | |
064af421 BP |
15 | */ |
16 | ||
17 | #ifndef ODP_UTIL_H | |
18 | #define ODP_UTIL_H 1 | |
19 | ||
20 | #include <stdbool.h> | |
21 | #include <stdint.h> | |
22 | #include "openflow/openflow.h" | |
23 | #include "openvswitch/datapath-protocol.h" | |
24 | ||
25 | struct ds; | |
26 | ||
27 | /* The kernel datapaths limits actions to those that fit in a single page of | |
28 | * memory, so there is no point in allocating more than that. */ | |
29 | enum { MAX_ODP_ACTIONS = 4096 / sizeof(union odp_action) }; | |
30 | ||
31 | struct odp_actions { | |
32 | size_t n_actions; | |
33 | union odp_action actions[MAX_ODP_ACTIONS]; | |
34 | }; | |
35 | ||
36 | static inline void | |
37 | odp_actions_init(struct odp_actions *actions) | |
38 | { | |
39 | actions->n_actions = 0; | |
40 | } | |
41 | ||
42 | union odp_action *odp_actions_add(struct odp_actions *actions, uint16_t type); | |
43 | ||
44 | static inline bool | |
45 | odp_actions_overflow(const struct odp_actions *actions) | |
46 | { | |
47 | return actions->n_actions > MAX_ODP_ACTIONS; | |
48 | } | |
49 | ||
50 | static inline uint16_t | |
51 | ofp_port_to_odp_port(uint16_t ofp_port) | |
52 | { | |
53 | switch (ofp_port) { | |
54 | case OFPP_LOCAL: | |
55 | return ODPP_LOCAL; | |
56 | case OFPP_NONE: | |
57 | return ODPP_NONE; | |
58 | default: | |
59 | return ofp_port; | |
60 | } | |
61 | } | |
62 | ||
63 | static inline uint16_t | |
64 | odp_port_to_ofp_port(uint16_t odp_port) | |
65 | { | |
66 | switch (odp_port) { | |
67 | case ODPP_LOCAL: | |
68 | return OFPP_LOCAL; | |
69 | case ODPP_NONE: | |
70 | return OFPP_NONE; | |
71 | default: | |
72 | return odp_port; | |
73 | } | |
74 | } | |
75 | ||
76 | void format_odp_action(struct ds *, const union odp_action *); | |
77 | void format_odp_actions(struct ds *, const union odp_action *actions, | |
78 | size_t n_actions); | |
79 | void format_odp_flow_stats(struct ds *, const struct odp_flow_stats *); | |
80 | void format_odp_flow(struct ds *, const struct odp_flow *); | |
81 | ||
82 | #endif /* odp-util.h */ |