2 * Copyright (c) 2008, 2009 Nicira Networks.
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.
28 struct ofp_action_header;
31 struct ofp_stats_reply;
35 void vconn_usage(bool active, bool passive, bool bootstrap);
37 /* Active vconns: virtual connections to OpenFlow devices. */
38 int vconn_open(const char *name, int min_version, struct vconn **);
39 void vconn_close(struct vconn *);
40 const char *vconn_get_name(const struct vconn *);
41 uint32_t vconn_get_remote_ip(const struct vconn *);
42 uint16_t vconn_get_remote_port(const struct vconn *);
43 uint32_t vconn_get_local_ip(const struct vconn *);
44 uint16_t vconn_get_local_port(const struct vconn *);
45 int vconn_connect(struct vconn *);
46 int vconn_recv(struct vconn *, struct ofpbuf **);
47 int vconn_send(struct vconn *, struct ofpbuf *);
48 int vconn_recv_xid(struct vconn *, uint32_t xid, struct ofpbuf **);
49 int vconn_transact(struct vconn *, struct ofpbuf *, struct ofpbuf **);
51 int vconn_open_block(const char *name, int min_version, struct vconn **);
52 int vconn_send_block(struct vconn *, struct ofpbuf *);
53 int vconn_recv_block(struct vconn *, struct ofpbuf **);
55 enum vconn_wait_type {
60 void vconn_wait(struct vconn *, enum vconn_wait_type);
61 void vconn_connect_wait(struct vconn *);
62 void vconn_recv_wait(struct vconn *);
63 void vconn_send_wait(struct vconn *);
65 /* Passive vconns: virtual listeners for incoming OpenFlow connections. */
66 int pvconn_open(const char *name, struct pvconn **);
67 const char *pvconn_get_name(const struct pvconn *);
68 void pvconn_close(struct pvconn *);
69 int pvconn_accept(struct pvconn *, int min_version, struct vconn **);
70 void pvconn_wait(struct pvconn *);
72 /* OpenFlow protocol utility functions. */
73 void *make_openflow(size_t openflow_len, uint8_t type, struct ofpbuf **);
74 void *make_openflow_xid(size_t openflow_len, uint8_t type,
75 uint32_t xid, struct ofpbuf **);
76 void *put_openflow(size_t openflow_len, uint8_t type, struct ofpbuf *);
77 void *put_openflow_xid(size_t openflow_len, uint8_t type, uint32_t xid,
79 void update_openflow_length(struct ofpbuf *);
80 struct ofpbuf *make_flow_mod(uint16_t command, const flow_t *,
82 struct ofpbuf *make_add_flow(const flow_t *, uint32_t buffer_id,
83 uint16_t max_idle, size_t actions_len);
84 struct ofpbuf *make_del_flow(const flow_t *);
85 struct ofpbuf *make_add_simple_flow(const flow_t *,
86 uint32_t buffer_id, uint16_t out_port,
88 struct ofpbuf *make_packet_out(const struct ofpbuf *packet, uint32_t buffer_id,
90 const struct ofp_action_header *,
92 struct ofpbuf *make_buffered_packet_out(uint32_t buffer_id,
93 uint16_t in_port, uint16_t out_port);
94 struct ofpbuf *make_unbuffered_packet_out(const struct ofpbuf *packet,
95 uint16_t in_port, uint16_t out_port);
96 struct ofpbuf *make_echo_request(void);
97 struct ofpbuf *make_echo_reply(const struct ofp_header *rq);
98 int check_ofp_message(const struct ofp_header *, uint8_t type, size_t size);
99 int check_ofp_message_array(const struct ofp_header *, uint8_t type,
100 size_t size, size_t array_elt_size,
101 size_t *n_array_elts);
102 int check_ofp_packet_out(const struct ofp_header *, struct ofpbuf *data,
103 int *n_actions, int max_ports);
105 struct flow_stats_iterator {
106 const uint8_t *pos, *end;
108 const struct ofp_flow_stats *flow_stats_first(struct flow_stats_iterator *,
109 const struct ofp_stats_reply *);
110 const struct ofp_flow_stats *flow_stats_next(struct flow_stats_iterator *);
112 struct actions_iterator {
113 const union ofp_action *pos, *end;
115 const union ofp_action *actions_first(struct actions_iterator *,
116 const union ofp_action *,
118 const union ofp_action *actions_next(struct actions_iterator *);
119 int validate_actions(const union ofp_action *, size_t n_actions,
122 void normalize_match(struct ofp_match *);
125 ofp_mkerr(uint16_t type, uint16_t code)
127 assert(type > 0 && type <= 0x7fff);
128 return (type << 16) | code;