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1 : : /* -*- mode: c; c-file-style: "openbsd" -*- */
2 : : /*
3 : : * Copyright (c) 2015 Nicira, Inc.
4 : : * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
5 : : *
6 : : * Permission to use, copy, modify, and/or distribute this software for any
7 : : * purpose with or without fee is hereby granted, provided that the above
8 : : * copyright notice and this permission notice appear in all copies.
9 : : *
10 : : * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 : : * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 : : * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 : : * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 : : * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 : : * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 : : * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 : : */
18 : :
19 : : #ifndef _LLDPD_H
20 : : #define _LLDPD_H
21 : :
22 : : #ifndef _WIN32
23 : : #include <netinet/in.h>
24 : : #endif
25 : : #include <stdlib.h>
26 : : #include <stddef.h>
27 : : #include <string.h>
28 : : #include <sys/types.h>
29 : : #include "dp-packet.h"
30 : : #include "openvswitch/list.h"
31 : : #include "lldpd-structs.h"
32 : : #include "lldp-tlv.h"
33 : : #include "packets.h"
34 : : #include "openvswitch/vlog.h"
35 : :
36 : : #define ETHERTYPE_LLDP 0x88cc
37 : :
38 : : #define LLDPD_TX_INTERVAL 5
39 : : #define LLDPD_TX_HOLD 4
40 : : #define LLDPD_TTL (LLDPD_TX_INTERVAL * LLDPD_TX_HOLD)
41 : :
42 : : #define PROTO_SEND_SIG struct lldpd *, struct lldpd_hardware *,struct dp_packet *
43 : : #define PROTO_DECODE_SIG struct lldpd *, char *, int, struct lldpd_hardware *,\
44 : : struct lldpd_chassis **, struct lldpd_port **
45 : : #define PROTO_GUESS_SIG char *, int
46 : :
47 : : struct protocol {
48 : : int mode; /* > 0 mode identifier (unique per protocol) */
49 : : int enabled; /* Is this protocol enabled? */
50 : : char *name; /* Name of protocol */
51 : : char arg; /* Argument to enable this protocol */
52 : : int(*send)(PROTO_SEND_SIG); /* How to send a frame */
53 : : int(*decode)(PROTO_DECODE_SIG); /* How to decode a frame */
54 : : int(*guess)(PROTO_GUESS_SIG); /* Can be NULL, use MAC address in this
55 : : * case
56 : : */
57 : : struct eth_addr mac; /* Destination MAC address used by this protocol */
58 : : };
59 : :
60 : : #define SMART_HIDDEN(port) (port->p_hidden_in)
61 : :
62 : : struct lldpd {
63 : : struct lldpd_config g_config;
64 : : struct protocol *g_protocols;
65 : : int g_lastrid;
66 : :
67 : : struct ovs_list g_chassis; /* Contains "struct lldp_chassis". */
68 : : struct ovs_list g_hardware; /* Contains "struct lldpd_hardware". */
69 : : };
70 : :
71 : : static inline struct lldpd_hardware *
72 : 1 : lldpd_first_hardware(struct lldpd *lldpd)
73 : : {
74 : 1 : return CONTAINER_OF(ovs_list_front(&lldpd->g_hardware),
75 : : struct lldpd_hardware, h_entries);
76 : : }
77 : :
78 : : /* lldpd.c */
79 : : struct lldpd_hardware *lldpd_get_hardware(struct lldpd *,
80 : : char *, int, struct lldpd_ops *);
81 : : struct lldpd_hardware *lldpd_alloc_hardware(struct lldpd *, char *, int);
82 : : void lldpd_hardware_cleanup(struct lldpd*, struct lldpd_hardware *);
83 : : struct lldpd_mgmt *lldpd_alloc_mgmt(int family, void *addr, size_t addrsize,
84 : : u_int32_t iface);
85 : : void lldpd_recv(struct lldpd *, struct lldpd_hardware *, char *, size_t);
86 : : uint32_t lldpd_send(struct lldpd_hardware *, struct dp_packet *);
87 : : void lldpd_loop(struct lldpd *);
88 : :
89 : : int lldpd_main(int, char **);
90 : : void lldpd_update_localports(struct lldpd *);
91 : : void lldpd_cleanup(struct lldpd *);
92 : :
93 : : void lldpd_assign_cfg_to_protocols(struct lldpd *);
94 : :
95 : : /* lldp.c */
96 : : int lldp_send(PROTO_SEND_SIG);
97 : : int lldp_decode(PROTO_DECODE_SIG);
98 : :
99 : : #endif /* _LLDPD_H */
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