[thirdparty/lldpd.git] / src / daemon / lldpd.h

/* -*- mode: c; c-file-style: "openbsd" -*- */
/*
 * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _LLDPD_H
#define _LLDPD_H
#define _GNU_SOURCE 1

#if HAVE_CONFIG_H
#  include <config.h>
#endif

#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
#else
# define RUNNING_ON_VALGRIND 0
#endif

#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <netinet/if_ether.h>
#include <netinet/in.h>
#include <sys/un.h>

#include "lldp-tlv.h"
#if defined (ENABLE_CDP) || defined (ENABLE_FDP)
#  include "cdp.h"
#endif
#ifdef ENABLE_SONMP
#  include "sonmp.h"
#endif
#ifdef ENABLE_EDP
#  include "edp.h"
#endif

#include "../compat/compat.h"
#include "../marshal.h"
#include "../log.h"
#include "../ctl.h"
#include "../lldpd-structs.h"

/* We don't want to import event2/event.h. We only need those as
   opaque structs. */
struct event;
struct event_base;

#define SYSFS_CLASS_NET "/sys/class/net/"
#define SYSFS_CLASS_DMI "/sys/class/dmi/id/"
#define LLDPD_TTL		120
#define LLDPD_TX_INTERVAL	30
#define LLDPD_TX_MSGDELAY	1
#define LLDPD_PID_FILE		"/var/run/lldpd.pid"

#define USING_AGENTX_SUBAGENT_MODULE 1

#define PROTO_SEND_SIG struct lldpd *, struct lldpd_hardware *
#define PROTO_DECODE_SIG struct lldpd *, char *, int, struct lldpd_hardware *, struct lldpd_chassis **, struct lldpd_port **
#define PROTO_GUESS_SIG char *, int

struct protocol {
	int		 mode;		/* > 0 mode identifier (unique per protocol) */
	int		 enabled;	/* Is this protocol enabled? */
	char		*name;		/* Name of protocol */
	char		 arg;		/* Argument to enable this protocol */
	int(*send)(PROTO_SEND_SIG);	/* How to send a frame */
	int(*decode)(PROTO_DECODE_SIG); /* How to decode a frame */
	int(*guess)(PROTO_GUESS_SIG);   /* Can be NULL, use MAC address in this case */
	u_int8_t	 mac[ETHER_ADDR_LEN];  /* Destination MAC address used by this protocol */
};

#define SMART_HIDDEN(port) (port->p_hidden_in)

struct lldpd {
	int			 g_sock;
	struct event_base	*g_base;
#ifdef USE_SNMP
#endif

	struct lldpd_config	 g_config;

	struct protocol		*g_protocols;
	int			 g_lastrid;
	struct event		*g_main_loop;
#ifdef USE_SNMP
	int			 g_snmp;
	struct event		*g_snmp_timeout;
	void			*g_snmp_fds;
	char			*g_snmp_agentx;
#endif /* USE_SNMP */

	/* Unix socket handling */
	int			 g_ctl;
	struct event		*g_ctl_event;
	struct event		*g_iface_event; /* Triggered when there is an interface change */
	struct event		*g_iface_timer_event; /* Triggered one second after last interface change */

	char			*g_lsb_release;

#define LOCAL_CHASSIS(cfg) ((struct lldpd_chassis *)(TAILQ_FIRST(&cfg->g_chassis)))
	TAILQ_HEAD(, lldpd_chassis) g_chassis;
	TAILQ_HEAD(, lldpd_hardware) g_hardware;
};

/* lldpd.c */
struct lldpd_hardware	*lldpd_get_hardware(struct lldpd *,
    char *, int, struct lldpd_ops *);
struct lldpd_hardware	*lldpd_alloc_hardware(struct lldpd *, char *, int);
void	 lldpd_hardware_cleanup(struct lldpd*, struct lldpd_hardware *);
struct lldpd_mgmt *lldpd_alloc_mgmt(int family, void *addr, size_t addrsize, u_int32_t iface);
void	 lldpd_recv(struct lldpd *, struct lldpd_hardware *, int);
void	 lldpd_send(struct lldpd_hardware *);
void	 lldpd_loop(struct lldpd *);
int	 lldpd_main(int, char **);
void	 lldpd_update_localports(struct lldpd *);

/* frame.c */
u_int16_t frame_checksum(const u_int8_t *, int, int);

/* event.c */
void	 levent_loop(struct lldpd *);
void	 levent_hardware_init(struct lldpd_hardware *);
void	 levent_hardware_add_fd(struct lldpd_hardware *, int);
void	 levent_hardware_release(struct lldpd_hardware *);
void	 levent_ctl_notify(char *, int, struct lldpd_port *);
void	 levent_send_now(struct lldpd *);
int	 levent_iface_subscribe(struct lldpd *, int);
void	 levent_schedule_pdu(struct lldpd_hardware *);

/* lldp.c */
int	 lldp_send(PROTO_SEND_SIG);
int	 lldp_decode(PROTO_DECODE_SIG);

/* cdp.c */
#ifdef ENABLE_CDP
int	 cdpv1_send(PROTO_SEND_SIG);
int	 cdpv2_send(PROTO_SEND_SIG);
int	 cdpv1_guess(PROTO_GUESS_SIG);
int	 cdpv2_guess(PROTO_GUESS_SIG);
#endif
#if defined (ENABLE_CDP) || defined (ENABLE_FDP)
int	 cdp_decode(PROTO_DECODE_SIG);
#endif
#ifdef ENABLE_FDP
int	 fdp_send(PROTO_SEND_SIG);
#endif

#ifdef ENABLE_SONMP
/* sonmp.c */
int	 sonmp_send(PROTO_SEND_SIG);
int	 sonmp_decode(PROTO_DECODE_SIG);
#endif

#ifdef ENABLE_EDP
/* edp.c */
int	 edp_send(PROTO_SEND_SIG);
int	 edp_decode(PROTO_DECODE_SIG);
#endif

/* dmi.c */
#ifdef ENABLE_LLDPMED
char	*dmi_hw(void);
char	*dmi_fw(void);
char	*dmi_sn(void);
char	*dmi_manuf(void);
char	*dmi_model(void);
char	*dmi_asset(void);
#endif

#ifdef USE_SNMP
/* agent.c */
void		 agent_shutdown(void);
void		 agent_init(struct lldpd *, char *);
void		 agent_notify(struct lldpd_hardware *, int, struct lldpd_port *);
#endif

/* agent_priv.c */
void		 agent_priv_register_domain(void);

/* client.c */
int
client_handle_client(struct lldpd *cfg,
    ssize_t(*send)(void *, int, void *, size_t),
    void *,
    enum hmsg_type type, void *buffer, size_t n,
    int*);

/* priv.c */
void	 priv_init(char*, int, uid_t, gid_t);
void	 priv_ctl_cleanup(void);
char   	*priv_gethostbyname(void);
#ifdef HOST_OS_LINUX
int    	 priv_open(char*);
int    	 priv_ethtool(char*, void*, size_t);
#endif
int    	 priv_iface_init(int);
int	 priv_iface_multicast(const char *, u_int8_t *, int);
int	 priv_snmp_socket(struct sockaddr_un *);

/* privsep_fdpass.c */
int	 receive_fd(int);
void	 send_fd(int, int);

/* interfaces-*.c */

/* BPF filter to get revelant information from interfaces */
/* LLDP: "ether proto 0x88cc and ether dst 01:80:c2:00:00:0e" */
/* FDP: "ether dst 01:e0:52:cc:cc:cc" */
/* CDP: "ether dst 01:00:0c:cc:cc:cc" */
/* SONMP: "ether dst 01:00:81:00:01:00" */
/* EDP: "ether dst 00:e0:2b:00:00:00" */
/* For optimization purpose, we first check if the first bit of the
   first byte is 1. if not, this can only be an EDP packet:

   tcpdump -dd "(ether[0] & 1 = 1 and
                 ((ether proto 0x88cc and ether dst 01:80:c2:00:00:0e) or
                  (ether dst 01:e0:52:cc:cc:cc) or
                  (ether dst 01:00:0c:cc:cc:cc) or
                  (ether dst 01:00:81:00:01:00))) or
                (ether dst 00:e0:2b:00:00:00)"
*/

#define LLDPD_FILTER_F				\
	{ 0x30, 0, 0, 0x00000000 },		\
	{ 0x54, 0, 0, 0x00000001 },		\
	{ 0x15, 0, 14, 0x00000001 },		\
	{ 0x28, 0, 0, 0x0000000c },		\
	{ 0x15, 0, 4, 0x000088cc },		\
	{ 0x20, 0, 0, 0x00000002 },		\
	{ 0x15, 0, 2, 0xc200000e },		\
	{ 0x28, 0, 0, 0x00000000 },		\
	{ 0x15, 12, 13, 0x00000180 },		\
	{ 0x20, 0, 0, 0x00000002 },		\
	{ 0x15, 0, 2, 0x52cccccc },		\
	{ 0x28, 0, 0, 0x00000000 },		\
	{ 0x15, 8, 9, 0x000001e0 },		\
	{ 0x15, 1, 0, 0x0ccccccc },		\
	{ 0x15, 0, 2, 0x81000100 },		\
	{ 0x28, 0, 0, 0x00000000 },		\
	{ 0x15, 4, 5, 0x00000100 },		\
	{ 0x20, 0, 0, 0x00000002 },		\
	{ 0x15, 0, 3, 0x2b000000 },		\
	{ 0x28, 0, 0, 0x00000000 },		\
	{ 0x15, 0, 1, 0x000000e0 },		\
	{ 0x6, 0, 0, 0x0000ffff },		\
	{ 0x6, 0, 0, 0x00000000 },

/* This function is responsible to refresh information about interfaces. It is
 * OS specific but should be present for each OS. It can use the functions in
 * `interfaces.c` as helper by providing a list of OS-independent interface
 * devices. */
void     interfaces_update(struct lldpd *);

/* interfaces.c */
/* An interface cannot be both physical and (bridge or bond or vlan) */
#define IFACE_PHYSICAL_T (1 << 0) /* Physical interface */
#define IFACE_BRIDGE_T   (1 << 1) /* Bridge interface */
#define IFACE_BOND_T     (1 << 2) /* Bond interface */
#define IFACE_VLAN_T     (1 << 3) /* VLAN interface */
#define IFACE_WIRELESS_T (1 << 4) /* Wireless interface */
struct interfaces_device {
	TAILQ_ENTRY(interfaces_device) next;
	int   index;		/* Index */
	char *name;		/* Name */
	char *alias;		/* Alias */
	char *address;		/* MAC address */
	char *driver;		/* Driver (for whitelisting purpose) */
	int   flags;		/* Flags (IFF_*) */
	int   mtu;		/* MTU */
	int   type;		/* Type (see IFACE_*_T) */
	int   vlanid;		/* If a VLAN, what is the VLAN ID? */
	struct interfaces_device *lower; /* Lower interface (for a VLAN for example) */
	struct interfaces_device *upper; /* Upper interface (for a bridge or a bond) */

	/* The following are OS specific. Should be static (no free function) */
#ifdef HOST_OS_LINUX
	int lower_idx;		/* Index to lower interface */
	int upper_idx;		/* Index to upper interface */
	int txqueue;		/* Transmit queue length */
#endif
};
struct interfaces_address {
	TAILQ_ENTRY(interfaces_address) next;
	int index;			 /* Index */
	int flags;			 /* Flags */
	struct sockaddr_storage address; /* Address */

	/* The following are OS specific. */
	/* Nothing yet. */
};
TAILQ_HEAD(interfaces_device_list,  interfaces_device);
TAILQ_HEAD(interfaces_address_list, interfaces_address);
void interfaces_free_device(struct interfaces_device *);
void interfaces_free_address(struct interfaces_address *);
void interfaces_free_devices(struct interfaces_device_list *);
void interfaces_free_addresses(struct interfaces_address_list *);
struct interfaces_device* interfaces_indextointerface(
	struct interfaces_device_list *,
	int);
struct interfaces_device* interfaces_nametointerface(
	struct interfaces_device_list *,
	const char *);

void interfaces_helper_whitelist(struct lldpd *,
    struct interfaces_device_list *);
void interfaces_helper_chassis(struct lldpd *,
    struct interfaces_device_list *);
void interfaces_helper_physical(struct lldpd *,
    struct interfaces_device_list *,
    struct lldpd_ops *,
    int(*init)(struct lldpd *, struct lldpd_hardware *));
void interfaces_helper_port_name_desc(struct lldpd_hardware *,
    struct interfaces_device *);
void interfaces_helper_mgmt(struct lldpd *,
    struct interfaces_address_list *);
#ifdef ENABLE_DOT1
void interfaces_helper_vlan(struct lldpd *,
    struct interfaces_device_list *);
#endif

void interfaces_setup_multicast(struct lldpd *, const char *, int);

#ifdef HOST_OS_LINUX
/* netlink.c */
struct interfaces_device_list  *netlink_get_interfaces(void);
struct interfaces_address_list *netlink_get_addresses(void);
int netlink_subscribe_changes(void);
#endif

#endif /* _LLDPD_H */
Commit	Line	Data
4b292b55 VB	1	/* -- mode: c; c-file-style: "openbsd" -- */
	2	/*
	3	* Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
	4	*
	5	* Permission to use, copy, modify, and/or distribute this software for any
	6	* purpose with or without fee is hereby granted, provided that the above
	7	* copyright notice and this permission notice appear in all copies.
	8	*
	9	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	10	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	11	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	12	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	13	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	14	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	15	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	16	*/
	17
	18	#ifndef _LLDPD_H
	19	#define _LLDPD_H
5d6aba3e	20	#define _GNU_SOURCE 1
4b292b55 VB	21
	22	#if HAVE_CONFIG_H
	23	# include <config.h>
	24	#endif
	25
	26	#ifdef HAVE_VALGRIND_VALGRIND_H
	27	# include <valgrind/valgrind.h>
	28	#else
	29	# define RUNNING_ON_VALGRIND 0
	30	#endif
	31
4b292b55 VB	32	#include <stdlib.h>
	33	#include <stddef.h>
	34	#include <string.h>
	35	#include <sys/queue.h>
e12c2365	36	#include <sys/types.h>
690b944c	37	#include <netinet/if_ether.h>
4b292b55	38	#include <netinet/in.h>
4b292b55 VB	39	#include <sys/un.h>
	40
	41	#include "lldp-tlv.h"
	42	#if defined (ENABLE_CDP) \|\| defined (ENABLE_FDP)
	43	# include "cdp.h"
	44	#endif
	45	#ifdef ENABLE_SONMP
	46	# include "sonmp.h"
	47	#endif
	48	#ifdef ENABLE_EDP
	49	# include "edp.h"
	50	#endif
	51
	52	#include "../compat/compat.h"
	53	#include "../marshal.h"
	54	#include "../log.h"
	55	#include "../ctl.h"
	56	#include "../lldpd-structs.h"
	57
	58	/* We don't want to import event2/event.h. We only need those as
	59	opaque structs. */
	60	struct event;
	61	struct event_base;
	62
	63	#define SYSFS_CLASS_NET "/sys/class/net/"
	64	#define SYSFS_CLASS_DMI "/sys/class/dmi/id/"
	65	#define LLDPD_TTL 120
8843f168	66	#define LLDPD_TX_INTERVAL 30
4b292b55 VB	67	#define LLDPD_TX_MSGDELAY 1
	68	#define LLDPD_PID_FILE "/var/run/lldpd.pid"
	69
	70	#define USING_AGENTX_SUBAGENT_MODULE 1
	71
	72	#define PROTO_SEND_SIG struct lldpd , struct lldpd_hardware
	73	#define PROTO_DECODE_SIG struct lldpd , char , int, struct lldpd_hardware , struct lldpd_chassis , struct lldpd_port *
	74	#define PROTO_GUESS_SIG char *, int
	75
	76	struct protocol {
	77	int mode; /* > 0 mode identifier (unique per protocol) */
	78	int enabled; /* Is this protocol enabled? */
	79	char name; / Name of protocol */
	80	char arg; /* Argument to enable this protocol */
	81	int(send)(PROTO_SEND_SIG); / How to send a frame */
	82	int(decode)(PROTO_DECODE_SIG); / How to decode a frame */
	83	int(guess)(PROTO_GUESS_SIG); / Can be NULL, use MAC address in this case */
4e5f34c5	84	u_int8_t mac[ETHER_ADDR_LEN]; /* Destination MAC address used by this protocol */
4b292b55 VB	85	};
4b292b55 VB	86
4b292b55 VB	87	#define SMART_HIDDEN(port) (port->p_hidden_in)
	88
	89	struct lldpd {
	90	int g_sock;
4b292b55 VB	91	struct event_base *g_base;
	92	#ifdef USE_SNMP
	93	#endif
	94
8ec333bd VB	95	struct lldpd_config g_config;
8ec333bd VB	96
4b292b55	97	struct protocol *g_protocols;
4b292b55	98	int g_lastrid;
4b292b55 VB	99	struct event *g_main_loop;
	100	#ifdef USE_SNMP
	101	int g_snmp;
	102	struct event *g_snmp_timeout;
	103	void *g_snmp_fds;
	104	char *g_snmp_agentx;
	105	#endif /* USE_SNMP */
	106
	107	/* Unix socket handling */
	108	int g_ctl;
	109	struct event *g_ctl_event;
0484f180 VB	110	struct event g_iface_event; / Triggered when there is an interface change */
0484f180 VB	111	struct event g_iface_timer_event; / Triggered one second after last interface change */
4b292b55	112
4b292b55	113	char *g_lsb_release;
4b292b55 VB	114
	115	#define LOCAL_CHASSIS(cfg) ((struct lldpd_chassis *)(TAILQ_FIRST(&cfg->g_chassis)))
	116	TAILQ_HEAD(, lldpd_chassis) g_chassis;
	117	TAILQ_HEAD(, lldpd_hardware) g_hardware;
	118	};
	119
4b292b55 VB	120	/* lldpd.c */
	121	struct lldpd_hardware lldpd_get_hardware(struct lldpd ,
	122	char , int, struct lldpd_ops );
e12c2365	123	struct lldpd_hardware lldpd_alloc_hardware(struct lldpd , char *, int);
4b292b55 VB	124	void lldpd_hardware_cleanup(struct lldpd, struct lldpd_hardware );
	125	struct lldpd_mgmt lldpd_alloc_mgmt(int family, void addr, size_t addrsize, u_int32_t iface);
	126	void lldpd_recv(struct lldpd , struct lldpd_hardware , int);
579bedd5	127	void lldpd_send(struct lldpd_hardware *);
4b292b55 VB	128	void lldpd_loop(struct lldpd *);
4b292b55 VB	129	int lldpd_main(int, char **);
0484f180 VB	130	void lldpd_update_localports(struct lldpd *);
0484f180 VB	131
579bedd5 VB	132	/* frame.c */
579bedd5 VB	133	u_int16_t frame_checksum(const u_int8_t *, int, int);
4b292b55 VB	134
	135	/* event.c */
	136	void levent_loop(struct lldpd *);
	137	void levent_hardware_init(struct lldpd_hardware *);
	138	void levent_hardware_add_fd(struct lldpd_hardware *, int);
	139	void levent_hardware_release(struct lldpd_hardware *);
4e90a9e0	140	void levent_ctl_notify(char , int, struct lldpd_port );
47287a61	141	void levent_send_now(struct lldpd *);
aa313f2a	142	int levent_iface_subscribe(struct lldpd *, int);
579bedd5	143	void levent_schedule_pdu(struct lldpd_hardware *);
4b292b55 VB	144
	145	/* lldp.c */
	146	int lldp_send(PROTO_SEND_SIG);
	147	int lldp_decode(PROTO_DECODE_SIG);
	148
	149	/* cdp.c */
	150	#ifdef ENABLE_CDP
	151	int cdpv1_send(PROTO_SEND_SIG);
	152	int cdpv2_send(PROTO_SEND_SIG);
	153	int cdpv1_guess(PROTO_GUESS_SIG);
	154	int cdpv2_guess(PROTO_GUESS_SIG);
	155	#endif
	156	#if defined (ENABLE_CDP) \|\| defined (ENABLE_FDP)
	157	int cdp_decode(PROTO_DECODE_SIG);
	158	#endif
	159	#ifdef ENABLE_FDP
	160	int fdp_send(PROTO_SEND_SIG);
	161	#endif
	162
	163	#ifdef ENABLE_SONMP
	164	/* sonmp.c */
	165	int sonmp_send(PROTO_SEND_SIG);
	166	int sonmp_decode(PROTO_DECODE_SIG);
	167	#endif
	168
	169	#ifdef ENABLE_EDP
	170	/* edp.c */
	171	int edp_send(PROTO_SEND_SIG);
	172	int edp_decode(PROTO_DECODE_SIG);
	173	#endif
	174
4b292b55 VB	175	/* dmi.c */
4b292b55 VB	176	#ifdef ENABLE_LLDPMED
4b292b55 VB	177	char *dmi_hw(void);
	178	char *dmi_fw(void);
	179	char *dmi_sn(void);
	180	char *dmi_manuf(void);
	181	char *dmi_model(void);
	182	char *dmi_asset(void);
	183	#endif
4b292b55	184
25de85a4	185	#ifdef USE_SNMP
4b292b55 VB	186	/* agent.c */
	187	void agent_shutdown(void);
	188	void agent_init(struct lldpd , char );
25de85a4 VB	189	void agent_notify(struct lldpd_hardware , int, struct lldpd_port );
25de85a4 VB	190	#endif
4b292b55 VB	191
	192	/* agent_priv.c */
	193	void agent_priv_register_domain(void);
	194
	195	/* client.c */
e0478a46 VB	196	int
	197	client_handle_client(struct lldpd *cfg,
	198	ssize_t(send)(void , int, void *, size_t),
	199	void *,
4e90a9e0 VB	200	enum hmsg_type type, void *buffer, size_t n,
4e90a9e0 VB	201	int*);
4b292b55 VB	202
	203	/* priv.c */
	204	void priv_init(char*, int, uid_t, gid_t);
	205	void priv_ctl_cleanup(void);
	206	char *priv_gethostbyname(void);
e12c2365	207	#ifdef HOST_OS_LINUX
70c9cb05	208	int priv_open(char*);
e12c2365 VB	209	int priv_ethtool(char, void, size_t);
	210	#endif
	211	int priv_iface_init(int);
4b292b55 VB	212	int priv_iface_multicast(const char , u_int8_t , int);
	213	int priv_snmp_socket(struct sockaddr_un *);
	214
	215	/* privsep_fdpass.c */
	216	int receive_fd(int);
	217	void send_fd(int, int);
	218
e12c2365	219	/* interfaces-.c /
e12c2365	220
adbb6e54 VB	221	/* BPF filter to get revelant information from interfaces */
	222	/* LLDP: "ether proto 0x88cc and ether dst 01:80:c2:00:00:0e" */
	223	/* FDP: "ether dst 01:e0:52:cc:cc:cc" */
	224	/* CDP: "ether dst 01:00:0c:cc:cc:cc" */
	225	/* SONMP: "ether dst 01:00:81:00:01:00" */
	226	/* EDP: "ether dst 00:e0:2b:00:00:00" */
	227	/* For optimization purpose, we first check if the first bit of the
	228	first byte is 1. if not, this can only be an EDP packet:
	229
	230	tcpdump -dd "(ether[0] & 1 = 1 and
	231	((ether proto 0x88cc and ether dst 01:80:c2:00:00:0e) or
	232	(ether dst 01:e0:52:cc:cc:cc) or
	233	(ether dst 01:00:0c:cc:cc:cc) or
	234	(ether dst 01:00:81:00:01:00))) or
	235	(ether dst 00:e0:2b:00:00:00)"
	236	*/
	237
	238	#define LLDPD_FILTER_F \
	239	{ 0x30, 0, 0, 0x00000000 }, \
	240	{ 0x54, 0, 0, 0x00000001 }, \
	241	{ 0x15, 0, 14, 0x00000001 }, \
	242	{ 0x28, 0, 0, 0x0000000c }, \
	243	{ 0x15, 0, 4, 0x000088cc }, \
	244	{ 0x20, 0, 0, 0x00000002 }, \
	245	{ 0x15, 0, 2, 0xc200000e }, \
	246	{ 0x28, 0, 0, 0x00000000 }, \
	247	{ 0x15, 12, 13, 0x00000180 }, \
	248	{ 0x20, 0, 0, 0x00000002 }, \
	249	{ 0x15, 0, 2, 0x52cccccc }, \
	250	{ 0x28, 0, 0, 0x00000000 }, \
	251	{ 0x15, 8, 9, 0x000001e0 }, \
	252	{ 0x15, 1, 0, 0x0ccccccc }, \
	253	{ 0x15, 0, 2, 0x81000100 }, \
	254	{ 0x28, 0, 0, 0x00000000 }, \
	255	{ 0x15, 4, 5, 0x00000100 }, \
	256	{ 0x20, 0, 0, 0x00000002 }, \
	257	{ 0x15, 0, 3, 0x2b000000 }, \
	258	{ 0x28, 0, 0, 0x00000000 }, \
	259	{ 0x15, 0, 1, 0x000000e0 }, \
	260	{ 0x6, 0, 0, 0x0000ffff }, \
	261	{ 0x6, 0, 0, 0x00000000 },
	262
	263	/* This function is responsible to refresh information about interfaces. It is
	264	* OS specific but should be present for each OS. It can use the functions in
	265	* `interfaces.c` as helper by providing a list of OS-independent interface
	266	* devices. */
	267	void interfaces_update(struct lldpd *);
adbb6e54 VB	268
	269	/* interfaces.c */
	270	/* An interface cannot be both physical and (bridge or bond or vlan) */
	271	#define IFACE_PHYSICAL_T (1 << 0) /* Physical interface */
	272	#define IFACE_BRIDGE_T (1 << 1) /* Bridge interface */
	273	#define IFACE_BOND_T (1 << 2) /* Bond interface */
	274	#define IFACE_VLAN_T (1 << 3) /* VLAN interface */
	275	#define IFACE_WIRELESS_T (1 << 4) /* Wireless interface */
	276	struct interfaces_device {
	277	TAILQ_ENTRY(interfaces_device) next;
e12c2365 VB	278	int index; /* Index */
	279	char name; / Name */
	280	char alias; / Alias */
e12c2365	281	char address; / MAC address */
adbb6e54 VB	282	char driver; / Driver (for whitelisting purpose) */
	283	int flags; /* Flags (IFF_) /
	284	int mtu; /* MTU */
	285	int type; /* Type (see IFACE__T) /
	286	int vlanid; /* If a VLAN, what is the VLAN ID? */
	287	struct interfaces_device lower; / Lower interface (for a VLAN for example) */
	288	struct interfaces_device upper; / Upper interface (for a bridge or a bond) */
	289
	290	/* The following are OS specific. Should be static (no free function) */
	291	#ifdef HOST_OS_LINUX
	292	int lower_idx; /* Index to lower interface */
	293	int upper_idx; /* Index to upper interface */
	294	int txqueue; /* Transmit queue length */
	295	#endif
e12c2365	296	};
adbb6e54 VB	297	struct interfaces_address {
	298	TAILQ_ENTRY(interfaces_address) next;
	299	int index; /* Index */
	300	int flags; /* Flags */
e12c2365	301	struct sockaddr_storage address; /* Address */
adbb6e54 VB	302
	303	/* The following are OS specific. */
	304	/* Nothing yet. */
e12c2365	305	};
adbb6e54 VB	306	TAILQ_HEAD(interfaces_device_list, interfaces_device);
	307	TAILQ_HEAD(interfaces_address_list, interfaces_address);
	308	void interfaces_free_device(struct interfaces_device *);
	309	void interfaces_free_address(struct interfaces_address *);
	310	void interfaces_free_devices(struct interfaces_device_list *);
	311	void interfaces_free_addresses(struct interfaces_address_list *);
	312	struct interfaces_device* interfaces_indextointerface(
	313	struct interfaces_device_list *,
	314	int);
	315	struct interfaces_device* interfaces_nametointerface(
	316	struct interfaces_device_list *,
	317	const char *);
	318
	319	void interfaces_helper_whitelist(struct lldpd *,
	320	struct interfaces_device_list *);
	321	void interfaces_helper_chassis(struct lldpd *,
	322	struct interfaces_device_list *);
	323	void interfaces_helper_physical(struct lldpd *,
88bc404f	324	struct interfaces_device_list *,
22e8cd65	325	struct lldpd_ops *,
88bc404f	326	int(init)(struct lldpd , struct lldpd_hardware *));
adbb6e54 VB	327	void interfaces_helper_port_name_desc(struct lldpd_hardware *,
	328	struct interfaces_device *);
	329	void interfaces_helper_mgmt(struct lldpd *,
	330	struct interfaces_address_list *);
	331	#ifdef ENABLE_DOT1
	332	void interfaces_helper_vlan(struct lldpd *,
	333	struct interfaces_device_list *);
	334	#endif
	335
	336	void interfaces_setup_multicast(struct lldpd , const char , int);
	337
	338	#ifdef HOST_OS_LINUX
	339	/* netlink.c */
	340	struct interfaces_device_list *netlink_get_interfaces(void);
	341	struct interfaces_address_list *netlink_get_addresses(void);
0484f180	342	int netlink_subscribe_changes(void);
e12c2365 VB	343	#endif
e12c2365 VB	344
4b292b55	345	#endif /* _LLDPD_H */