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https://github.com/openvswitch/ovs
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74ff3298c8
Define struct eth_addr and use it instead of a uint8_t array for all ethernet addresses in OVS userspace. The struct is always the right size, and it can be assigned without an explicit memcpy, which makes code more readable. "struct eth_addr" is a good type name for this as many utility functions are already named accordingly. struct eth_addr can be accessed as bytes as well as ovs_be16's, which makes the struct 16-bit aligned. All use seems to be 16-bit aligned, so some algorithms on the ethernet addresses can be made a bit more efficient making use of this fact. As the struct fits into a register (in 64-bit systems) we pass it by value when possible. This patch also changes the few uses of Linux specific ETH_ALEN to OVS's own ETH_ADDR_LEN, and removes the OFP_ETH_ALEN, as it is no longer needed. This work stemmed from a desire to make all struct flow members assignable for unrelated exploration purposes. However, I think this might be a nice code readability improvement by itself. Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
97 lines
3.5 KiB
C
97 lines
3.5 KiB
C
/*
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* Copyright (c) 2011 Nicira, Inc.
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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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/* LACP Protocol Implementation. */
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enum lacp_status {
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LACP_NEGOTIATED, /* Successful LACP negotations. */
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LACP_CONFIGURED, /* LACP is enabled but not negotiated. */
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LACP_DISABLED /* LACP is not enabled. */
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};
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struct lacp_settings {
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char *name; /* Name (for debugging). */
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struct eth_addr id; /* System ID. Must be nonzero. */
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uint16_t priority; /* System priority. */
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bool active; /* Active or passive mode? */
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bool fast; /* Fast or slow probe interval. */
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bool fallback_ab_cfg; /* Fallback to BM_SLB on LACP failure. */
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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_unref(struct lacp *);
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struct lacp *lacp_ref(const 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_packet(struct lacp *, const void *slave,
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const struct dp_packet *packet);
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enum lacp_status lacp_status(const struct lacp *);
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struct lacp_slave_settings {
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char *name; /* Name (for debugging). */
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uint16_t id; /* Port ID. */
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uint16_t priority; /* Port priority. */
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uint16_t key; /* Aggregation 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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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 void *pdu, size_t pdu_size);
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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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struct lacp_slave_stats {
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/* id */
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struct eth_addr dot3adAggPortActorSystemID;
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struct eth_addr dot3adAggPortPartnerOperSystemID;
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uint32_t dot3adAggPortAttachedAggID;
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/* state */
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uint8_t dot3adAggPortActorAdminState;
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uint8_t dot3adAggPortActorOperState;
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uint8_t dot3adAggPortPartnerAdminState;
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uint8_t dot3adAggPortPartnerOperState;
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/* counters */
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uint32_t dot3adAggPortStatsLACPDUsRx;
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/* uint32_t dot3adAggPortStatsMarkerPDUsRx; */
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/* uint32_t dot3adAggPortStatsMarkerResponsePDUsRx; */
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/* uint32_t dot3adAggPortStatsUnknownRx; */
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uint32_t dot3adAggPortStatsIllegalRx;
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uint32_t dot3adAggPortStatsLACPDUsTx;
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/* uint32_t dot3adAggPortStatsMarkerPDUsTx; */
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/* uint32_t dot3adAggPortStatsMarkerResponsePDUsTx; */
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};
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bool lacp_get_slave_stats(const struct lacp *, const void *slave_, struct lacp_slave_stats *);
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#endif /* lacp.h */
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