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git.proxmox.com Git - ovs.git/blob - lib/lacp.h
2 * Copyright (c) 2011 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.
24 /* Masks for lacp_info state member. */
25 #define LACP_STATE_ACT 0x01 /* Activity. Active or passive? */
26 #define LACP_STATE_TIME 0x02 /* Timeout. Short or long timeout? */
27 #define LACP_STATE_AGG 0x04 /* Aggregation. Is the link is bondable? */
28 #define LACP_STATE_SYNC 0x08 /* Synchronization. Is the link in up to date? */
29 #define LACP_STATE_COL 0x10 /* Collecting. Is the link receiving frames? */
30 #define LACP_STATE_DIST 0x20 /* Distributing. Is the link sending frames? */
31 #define LACP_STATE_DEF 0x40 /* Defaulted. Using default partner info? */
32 #define LACP_STATE_EXP 0x80 /* Expired. Using expired partner info? */
34 #define LACP_FAST_TIME_TX 1000 /* Fast transmission rate. */
35 #define LACP_SLOW_TIME_TX 30000 /* Slow transmission rate. */
36 #define LACP_RX_MULTIPLIER 3 /* Multiply by TX rate to get RX rate. */
38 #define LACP_INFO_LEN 15
40 ovs_be16 sys_priority
; /* System priority. */
41 uint8_t sys_id
[ETH_ADDR_LEN
]; /* System ID. */
42 ovs_be16 key
; /* Operational key. */
43 ovs_be16 port_priority
; /* Port priority. */
44 ovs_be16 port_id
; /* Port ID. */
45 uint8_t state
; /* State mask. See LACP_STATE macros. */
46 } __attribute__((packed
));
47 BUILD_ASSERT_DECL(LACP_INFO_LEN
== sizeof(struct lacp_info
));
49 #define LACP_PDU_LEN 110
51 uint8_t subtype
; /* Always 1. */
52 uint8_t version
; /* Always 1. */
54 uint8_t actor_type
; /* Always 1. */
55 uint8_t actor_len
; /* Always 20. */
56 struct lacp_info actor
; /* LACP actor information. */
57 uint8_t z1
[3]; /* Reserved. Always 0. */
59 uint8_t partner_type
; /* Always 2. */
60 uint8_t partner_len
; /* Always 20. */
61 struct lacp_info partner
; /* LACP partner information. */
62 uint8_t z2
[3]; /* Reserved. Always 0. */
64 uint8_t collector_type
; /* Always 3. */
65 uint8_t collector_len
; /* Always 16. */
66 ovs_be16 collector_delay
; /* Maximum collector delay. Set to UINT16_MAX. */
67 uint8_t z3
[64]; /* Combination of several fields. Always 0. */
68 } __attribute__((packed
));
69 BUILD_ASSERT_DECL(LACP_PDU_LEN
== sizeof(struct lacp_pdu
));
71 void compose_lacp_pdu(const struct lacp_info
*actor
,
72 const struct lacp_info
*partner
, struct lacp_pdu
*);
74 const struct lacp_pdu
*parse_lacp_packet(const struct ofpbuf
*);
76 /* LACP Protocol Implementation. */
84 struct lacp_settings
{
86 uint8_t id
[ETH_ADDR_LEN
];
89 enum lacp_time lacp_time
;
90 long long int custom_time
;
95 struct lacp
*lacp_create(void);
96 void lacp_destroy(struct lacp
*);
98 void lacp_configure(struct lacp
*, const struct lacp_settings
*);
99 bool lacp_is_active(const struct lacp
*);
101 void lacp_process_pdu(struct lacp
*, const void *slave
,
102 const struct lacp_pdu
*);
103 bool lacp_negotiated(const struct lacp
*);
105 struct lacp_slave_settings
{
112 void lacp_slave_register(struct lacp
*, void *slave_
,
113 const struct lacp_slave_settings
*);
114 void lacp_slave_unregister(struct lacp
*, const void *slave
);
115 void lacp_slave_carrier_changed(const struct lacp
*, const void *slave
);
116 bool lacp_slave_may_enable(const struct lacp
*, const void *slave
);
117 uint16_t lacp_slave_get_port_id(const struct lacp
*, const void *slave
);
118 bool lacp_slave_is_current(const struct lacp
*, const void *slave_
);
120 /* Callback function for lacp_run() for sending a LACP PDU. */
121 typedef void lacp_send_pdu(void *slave
, const struct lacp_pdu
*);
123 void lacp_run(struct lacp
*, lacp_send_pdu
*);
124 void lacp_wait(struct lacp
*);