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https://github.com/openvswitch/ovs
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cc8d12f936
This commit creates a new heartbeat mode for LACP. This mode treats LACP as a protocol simply for monitoring link status. It strips out most of the sanity checks built into the protocol. Addition of this mode makes "lacp-force-aggregatable" and "lacp-strict" options obsolete so they are removed.
127 lines
4.5 KiB
C
127 lines
4.5 KiB
C
/*
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* Copyright (c) 2011 Nicira Networks.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LACP_H
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#define LACP_H 1
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#include <stdbool.h>
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#include <stdint.h>
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#include "packets.h"
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/* Masks for lacp_info state member. */
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#define LACP_STATE_ACT 0x01 /* Activity. Active or passive? */
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#define LACP_STATE_TIME 0x02 /* Timeout. Short or long timeout? */
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#define LACP_STATE_AGG 0x04 /* Aggregation. Is the link is bondable? */
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#define LACP_STATE_SYNC 0x08 /* Synchronization. Is the link in up to date? */
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#define LACP_STATE_COL 0x10 /* Collecting. Is the link receiving frames? */
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#define LACP_STATE_DIST 0x20 /* Distributing. Is the link sending frames? */
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#define LACP_STATE_DEF 0x40 /* Defaulted. Using default partner info? */
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#define LACP_STATE_EXP 0x80 /* Expired. Using expired partner info? */
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#define LACP_FAST_TIME_TX 1000 /* Fast transmission rate. */
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#define LACP_SLOW_TIME_TX 30000 /* Slow transmission rate. */
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#define LACP_RX_MULTIPLIER 3 /* Multiply by TX rate to get RX rate. */
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#define LACP_INFO_LEN 15
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struct lacp_info {
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ovs_be16 sys_priority; /* System priority. */
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uint8_t sys_id[ETH_ADDR_LEN]; /* System ID. */
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ovs_be16 key; /* Operational key. */
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ovs_be16 port_priority; /* Port priority. */
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ovs_be16 port_id; /* Port ID. */
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uint8_t state; /* State mask. See LACP_STATE macros. */
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} __attribute__((packed));
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BUILD_ASSERT_DECL(LACP_INFO_LEN == sizeof(struct lacp_info));
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#define LACP_PDU_LEN 110
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struct lacp_pdu {
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uint8_t subtype; /* Always 1. */
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uint8_t version; /* Always 1. */
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uint8_t actor_type; /* Always 1. */
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uint8_t actor_len; /* Always 20. */
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struct lacp_info actor; /* LACP actor information. */
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uint8_t z1[3]; /* Reserved. Always 0. */
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uint8_t partner_type; /* Always 2. */
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uint8_t partner_len; /* Always 20. */
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struct lacp_info partner; /* LACP partner information. */
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uint8_t z2[3]; /* Reserved. Always 0. */
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uint8_t collector_type; /* Always 3. */
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uint8_t collector_len; /* Always 16. */
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ovs_be16 collector_delay; /* Maximum collector delay. Set to UINT16_MAX. */
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uint8_t z3[64]; /* Combination of several fields. Always 0. */
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} __attribute__((packed));
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BUILD_ASSERT_DECL(LACP_PDU_LEN == sizeof(struct lacp_pdu));
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void compose_lacp_pdu(const struct lacp_info *actor,
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const struct lacp_info *partner, struct lacp_pdu *);
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const struct lacp_pdu *parse_lacp_packet(const struct ofpbuf *);
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/* LACP Protocol Implementation. */
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enum lacp_time {
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LACP_TIME_FAST,
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LACP_TIME_SLOW,
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LACP_TIME_CUSTOM
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};
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struct lacp_settings {
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char *name;
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uint8_t id[ETH_ADDR_LEN];
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uint16_t priority;
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bool active;
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enum lacp_time lacp_time;
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long long int custom_time;
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bool heartbeat;
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};
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void lacp_init(void);
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struct lacp *lacp_create(void);
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void lacp_destroy(struct lacp *);
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void lacp_configure(struct lacp *, const struct lacp_settings *);
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bool lacp_is_active(const struct lacp *);
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void lacp_process_pdu(struct lacp *, const void *slave,
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const struct lacp_pdu *);
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bool lacp_negotiated(const struct lacp *);
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struct lacp_slave_settings {
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char *name;
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uint16_t id;
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uint16_t priority;
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uint16_t key;
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};
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void lacp_slave_register(struct lacp *, void *slave_,
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const struct lacp_slave_settings *);
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void lacp_slave_unregister(struct lacp *, const void *slave);
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void lacp_slave_carrier_changed(const struct lacp *, const void *slave);
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bool lacp_slave_may_enable(const struct lacp *, const void *slave);
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uint16_t lacp_slave_get_port_id(const struct lacp *, const void *slave);
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bool lacp_slave_is_current(const struct lacp *, const void *slave_);
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/* Callback function for lacp_run() for sending a LACP PDU. */
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typedef void lacp_send_pdu(void *slave, const struct lacp_pdu *);
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void lacp_run(struct lacp *, lacp_send_pdu *);
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void lacp_wait(struct lacp *);
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#endif /* lacp.h */
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