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2 * Copyright (c) 2008, 2009, 2010, 2011 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.
31 /* How flows are balanced among bond slaves. */
33 BM_TCP
, /* Transport Layer Load Balance. */
34 BM_SLB
, /* Source Load Balance. */
35 BM_STABLE
, /* Stable. */
36 BM_AB
/* Active Backup. */
39 bool bond_mode_from_string(enum bond_mode
*, const char *);
40 const char *bond_mode_to_string(enum bond_mode
);
42 /* Configuration for a bond as a whole. */
43 struct bond_settings
{
44 char *name
; /* Bond's name, for log messages. */
45 uint32_t basis
; /* Flow hashing basis. */
47 /* Balancing configuration. */
48 enum bond_mode balance
;
49 int rebalance_interval
; /* Milliseconds between rebalances.
50 Zero to disable rebalancing. */
52 /* Link status detection. */
53 int up_delay
; /* ms before enabling an up slave. */
54 int down_delay
; /* ms before disabling a down slave. */
56 /* Legacy compatibility. */
57 bool fake_iface
; /* Update fake stats for netdev 'name'? */
60 /* Program startup. */
64 struct bond
*bond_create(const struct bond_settings
*);
65 void bond_destroy(struct bond
*);
67 bool bond_reconfigure(struct bond
*, const struct bond_settings
*);
68 void bond_slave_register(struct bond
*, void *slave_
,
69 uint32_t stable_id
, struct netdev
*);
70 void bond_slave_set_netdev(struct bond
*, void *slave_
, struct netdev
*);
71 void bond_slave_unregister(struct bond
*, const void *slave
);
73 void bond_run(struct bond
*, struct tag_set
*, enum lacp_status
);
74 void bond_wait(struct bond
*);
76 void bond_slave_set_may_enable(struct bond
*, void *slave_
, bool may_enable
);
78 /* Special MAC learning support for SLB bonding. */
79 bool bond_should_send_learning_packets(struct bond
*);
80 struct ofpbuf
*bond_compose_learning_packet(struct bond
*,
81 const uint8_t eth_src
[ETH_ADDR_LEN
],
82 uint16_t vlan
, void **port_aux
);
84 /* Packet processing. */
86 BV_ACCEPT
, /* Accept this packet. */
87 BV_DROP
, /* Drop this packet. */
88 BV_DROP_IF_MOVED
/* Drop if we've learned a different port. */
90 enum bond_verdict
bond_check_admissibility(struct bond
*, const void *slave_
,
91 const uint8_t eth_dst
[ETH_ADDR_LEN
],
93 void *bond_choose_output_slave(struct bond
*,
94 const struct flow
*, uint16_t vlan
, tag_type
*);
97 void bond_account(struct bond
*, const struct flow
*, uint16_t vlan
,
99 void bond_rebalance(struct bond
*, struct tag_set
*);