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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>
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/*
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* Copyright (c) 2015 Nicira, Inc.
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* Copyright (c) 2014 Wind River Systems, Inc.
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* Copyright (c) 2015 Avaya, 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 OVS_LLDP_H
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#define OVS_LLDP_H
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#include <stdint.h>
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#include "dp-packet.h"
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#include "hmap.h"
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#include "list.h"
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#include "lldp/lldpd.h"
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#include "ovs-atomic.h"
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#include "packets.h"
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#include "timer.h"
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/* Transmit every LLDPD_TX_INTERVAL seconds. */
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#define LLDP_DEFAULT_TRANSMIT_INTERVAL_MS (LLDPD_TX_INTERVAL * 1000)
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struct flow;
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struct netdev;
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struct smap;
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/* Structure per LLDP instance (at the moment per port when enabled).
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*/
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struct lldp {
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struct hmap_node hmap_node; /* Node in all_lldps list. */
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struct lldpd *lldpd;
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char *name; /* Name of the port. */
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struct timer tx_timer; /* Send LLDP when expired. */
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struct hmap mappings_by_isid; /* "struct" indexed by ISID */
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struct hmap mappings_by_aux; /* "struct" indexed by aux */
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struct ovs_list active_mapping_queue;
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struct ovs_refcount ref_cnt;
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bool enabled; /* LLDP enabled on port */
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};
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/* Configuration specific to Auto Attach.
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*/
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struct aa_settings {
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char *system_description;
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char *system_name;
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};
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/* Configuration of Auto Attach mappings.
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*/
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struct aa_mapping_settings {
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uint32_t isid;
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uint16_t vlan;
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};
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enum bridge_aa_vlan_oper {
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BRIDGE_AA_VLAN_OPER_UNDEF,
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BRIDGE_AA_VLAN_OPER_ADD,
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BRIDGE_AA_VLAN_OPER_REMOVE
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};
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/* Bridge Auto Attach operations. Mostly for adding/removing VLAN on
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* the trunk port connected to the Auto Attach server.
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*/
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struct bridge_aa_vlan {
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struct ovs_list list_node;
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char *port_name;
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uint16_t vlan;
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enum bridge_aa_vlan_oper oper;
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};
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void lldp_init(void);
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long long int lldp_wait(struct lldp *lldp);
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long long int lldp_wake_time(const struct lldp *lldp);
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void lldp_run(struct lldpd *cfg);
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bool lldp_should_send_packet(struct lldp *cfg);
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bool lldp_should_process_flow(struct lldp *lldp, const struct flow *flow);
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bool lldp_configure(struct lldp *lldp, const struct smap *cfg);
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void lldp_process_packet(struct lldp *cfg, const struct dp_packet *);
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void lldp_put_packet(struct lldp *lldp, struct dp_packet *packet,
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const struct eth_addr eth_src);
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void lldpd_assign_cfg_to_protocols(struct lldpd *cfg);
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struct lldp * lldp_create(const struct netdev *netdev, const uint32_t mtu,
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const struct smap *cfg);
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struct lldp * lldp_ref(const struct lldp *lldp_);
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void lldp_unref(struct lldp *lldp);
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int aa_get_vlan_queued(struct ovs_list *list);
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unsigned int aa_get_vlan_queue_size(void);
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int aa_configure(const struct aa_settings *s);
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int aa_mapping_register(void *aux, const struct aa_mapping_settings *s);
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int aa_mapping_unregister(void *aux);
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/* Used by unit tests */
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struct lldp * lldp_create_dummy(void);
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#endif /* OVS_LLDP_H */
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