[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>

#if HAVE_VFORK_H
# include <vfork.h>
#endif
#if HAVE_WORKING_FORK
# define vfork fork
#endif

#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_TX_INTERVAL	30
#define LLDPD_TX_HOLD          4
#define LLDPD_TTL              LLDPD_TX_INTERVAL * LLDPD_TX_HOLD
#define LLDPD_TX_MSGDELAY	1
#define LLDPD_MAX_NEIGHBORS	4
#define LLDPD_PID_FILE		"/var/run/lldpd.pid"
#define LLDPD_FAST_TX_INTERVAL	1
#define LLDPD_FAST_INIT	4

#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;
	struct event		*g_cleanup_timer;
#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 */
	const char		*g_ctlname;
	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 **, char **);
void	 lldpd_update_localports(struct lldpd *);
void	 lldpd_cleanup(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 *);
void	 levent_update_now(struct lldpd *);
int	 levent_iface_subscribe(struct lldpd *, int);
void	 levent_schedule_pdu(struct lldpd_hardware *);
void	 levent_schedule_cleanup(struct lldpd *);
int	 levent_make_socket_nonblocking(int);

/* 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

#ifdef ENABLE_PRIVSEP
/* agent_priv.c */
void		 agent_priv_register_domain(void);
#endif

/* 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(const char*, int, uid_t, gid_t);
void	 priv_wait(void);
void	 priv_ctl_cleanup(const char *ctlname);
char   	*priv_gethostbyname(void);
#ifdef HOST_OS_LINUX
int    	 priv_open(char*);
void	 asroot_open(void);
int    	 priv_ethtool(char*, void*, size_t);
void	 asroot_ethtool(void);
#endif
int    	 priv_iface_init(int, char *);
int	 asroot_iface_init_os(int, char *, int *);
int	 priv_iface_multicast(const char *, u_int8_t *, int);
int	 priv_iface_description(const char *, const char *);
int	 asroot_iface_description_os(const char *, const char *);
int	 priv_snmp_socket(struct sockaddr_un *);

enum priv_cmd {
	PRIV_PING,
	PRIV_DELETE_CTL_SOCKET,
	PRIV_GET_HOSTNAME,
	PRIV_OPEN,
	PRIV_ETHTOOL,
	PRIV_IFACE_INIT,
	PRIV_IFACE_MULTICAST,
	PRIV_IFACE_DESCRIPTION,
	PRIV_SNMP_SOCKET,
};

/* priv-seccomp.c */
#if defined USE_SECCOMP && defined ENABLE_PRIVSEP
int priv_seccomp_init(int, int);
#endif

/* privsep_io.c */
enum priv_context {
	PRIV_PRIVILEGED,
	PRIV_UNPRIVILEGED
};
int	 may_read(enum priv_context, void *, size_t);
void	 must_read(enum priv_context, void *, size_t);
void	 must_write(enum priv_context, const void *, size_t);
void	 priv_privileged_fd(int);
void	 priv_unprivileged_fd(int);
int	 receive_fd(enum priv_context);
void	 send_fd(enum priv_context, 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_add_hardware(struct lldpd *,
    struct lldpd_hardware *);
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
int interfaces_send_helper(struct lldpd *,
    struct lldpd_hardware *, char *, size_t);

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

#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

#ifndef HOST_OS_LINUX
int ifbpf_phys_init(struct lldpd *, struct lldpd_hardware *);
#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>
4b292b55 VB	40
45bf0bd0 VB	41	#if HAVE_VFORK_H
	42	# include <vfork.h>
	43	#endif
	44	#if HAVE_WORKING_FORK
	45	# define vfork fork
	46	#endif
	47
4b292b55 VB	48	#include "lldp-tlv.h"
	49	#if defined (ENABLE_CDP) \|\| defined (ENABLE_FDP)
	50	# include "cdp.h"
	51	#endif
	52	#ifdef ENABLE_SONMP
	53	# include "sonmp.h"
	54	#endif
	55	#ifdef ENABLE_EDP
	56	# include "edp.h"
	57	#endif
	58
	59	#include "../compat/compat.h"
	60	#include "../marshal.h"
	61	#include "../log.h"
	62	#include "../ctl.h"
	63	#include "../lldpd-structs.h"
	64
	65	/* We don't want to import event2/event.h. We only need those as
	66	opaque structs. */
	67	struct event;
	68	struct event_base;
	69
	70	#define SYSFS_CLASS_NET "/sys/class/net/"
	71	#define SYSFS_CLASS_DMI "/sys/class/dmi/id/"
8843f168	72	#define LLDPD_TX_INTERVAL 30
c10302a3	73	#define LLDPD_TX_HOLD 4
c10302a3	74	#define LLDPD_TTL LLDPD_TX_INTERVAL * LLDPD_TX_HOLD
4b292b55	75	#define LLDPD_TX_MSGDELAY 1
42589660	76	#define LLDPD_MAX_NEIGHBORS 4
4b292b55	77	#define LLDPD_PID_FILE "/var/run/lldpd.pid"
b9de0ca6	78	#define LLDPD_FAST_TX_INTERVAL 1
b9de0ca6	79	#define LLDPD_FAST_INIT 4
4b292b55 VB	80
	81	#define USING_AGENTX_SUBAGENT_MODULE 1
	82
	83	#define PROTO_SEND_SIG struct lldpd , struct lldpd_hardware
	84	#define PROTO_DECODE_SIG struct lldpd , char , int, struct lldpd_hardware , struct lldpd_chassis , struct lldpd_port *
	85	#define PROTO_GUESS_SIG char *, int
	86
	87	struct protocol {
	88	int mode; /* > 0 mode identifier (unique per protocol) */
	89	int enabled; /* Is this protocol enabled? */
	90	char name; / Name of protocol */
	91	char arg; /* Argument to enable this protocol */
	92	int(send)(PROTO_SEND_SIG); / How to send a frame */
	93	int(decode)(PROTO_DECODE_SIG); / How to decode a frame */
	94	int(guess)(PROTO_GUESS_SIG); / Can be NULL, use MAC address in this case */
4e5f34c5	95	u_int8_t mac[ETHER_ADDR_LEN]; /* Destination MAC address used by this protocol */
4b292b55 VB	96	};
4b292b55 VB	97
4b292b55 VB	98	#define SMART_HIDDEN(port) (port->p_hidden_in)
	99
	100	struct lldpd {
	101	int g_sock;
4b292b55 VB	102	struct event_base *g_base;
	103	#ifdef USE_SNMP
	104	#endif
	105
8ec333bd VB	106	struct lldpd_config g_config;
8ec333bd VB	107
4b292b55	108	struct protocol *g_protocols;
4b292b55	109	int g_lastrid;
4b292b55	110	struct event *g_main_loop;
3333d2a8	111	struct event *g_cleanup_timer;
4b292b55 VB	112	#ifdef USE_SNMP
	113	int g_snmp;
	114	struct event *g_snmp_timeout;
	115	void *g_snmp_fds;
	116	char *g_snmp_agentx;
	117	#endif /* USE_SNMP */
	118
	119	/* Unix socket handling */
0262adbb	120	const char *g_ctlname;
4b292b55 VB	121	int g_ctl;
4b292b55 VB	122	struct event *g_ctl_event;
0484f180 VB	123	struct event g_iface_event; / Triggered when there is an interface change */
0484f180 VB	124	struct event g_iface_timer_event; / Triggered one second after last interface change */
4b292b55	125
4b292b55	126	char *g_lsb_release;
4b292b55 VB	127
	128	#define LOCAL_CHASSIS(cfg) ((struct lldpd_chassis *)(TAILQ_FIRST(&cfg->g_chassis)))
	129	TAILQ_HEAD(, lldpd_chassis) g_chassis;
	130	TAILQ_HEAD(, lldpd_hardware) g_hardware;
	131	};
	132
4b292b55 VB	133	/* lldpd.c */
	134	struct lldpd_hardware lldpd_get_hardware(struct lldpd ,
	135	char , int, struct lldpd_ops );
e12c2365	136	struct lldpd_hardware lldpd_alloc_hardware(struct lldpd , char *, int);
4b292b55 VB	137	void lldpd_hardware_cleanup(struct lldpd, struct lldpd_hardware );
	138	struct lldpd_mgmt lldpd_alloc_mgmt(int family, void addr, size_t addrsize, u_int32_t iface);
	139	void lldpd_recv(struct lldpd , struct lldpd_hardware , int);
579bedd5	140	void lldpd_send(struct lldpd_hardware *);
4b292b55	141	void lldpd_loop(struct lldpd *);
1e0d651f	142	int lldpd_main(int, char , char );
0484f180	143	void lldpd_update_localports(struct lldpd *);
3333d2a8	144	void lldpd_cleanup(struct lldpd *);
0484f180	145
579bedd5 VB	146	/* frame.c */
579bedd5 VB	147	u_int16_t frame_checksum(const u_int8_t *, int, int);
4b292b55 VB	148
	149	/* event.c */
	150	void levent_loop(struct lldpd *);
	151	void levent_hardware_init(struct lldpd_hardware *);
	152	void levent_hardware_add_fd(struct lldpd_hardware *, int);
	153	void levent_hardware_release(struct lldpd_hardware *);
4e90a9e0	154	void levent_ctl_notify(char , int, struct lldpd_port );
47287a61	155	void levent_send_now(struct lldpd *);
e681c859	156	void levent_update_now(struct lldpd *);
aa313f2a	157	int levent_iface_subscribe(struct lldpd *, int);
579bedd5	158	void levent_schedule_pdu(struct lldpd_hardware *);
3333d2a8	159	void levent_schedule_cleanup(struct lldpd *);
bec75f84	160	int levent_make_socket_nonblocking(int);
4b292b55 VB	161
	162	/* lldp.c */
	163	int lldp_send(PROTO_SEND_SIG);
	164	int lldp_decode(PROTO_DECODE_SIG);
	165
	166	/* cdp.c */
	167	#ifdef ENABLE_CDP
	168	int cdpv1_send(PROTO_SEND_SIG);
	169	int cdpv2_send(PROTO_SEND_SIG);
	170	int cdpv1_guess(PROTO_GUESS_SIG);
	171	int cdpv2_guess(PROTO_GUESS_SIG);
	172	#endif
	173	#if defined (ENABLE_CDP) \|\| defined (ENABLE_FDP)
	174	int cdp_decode(PROTO_DECODE_SIG);
	175	#endif
	176	#ifdef ENABLE_FDP
	177	int fdp_send(PROTO_SEND_SIG);
	178	#endif
	179
	180	#ifdef ENABLE_SONMP
	181	/* sonmp.c */
	182	int sonmp_send(PROTO_SEND_SIG);
	183	int sonmp_decode(PROTO_DECODE_SIG);
	184	#endif
	185
	186	#ifdef ENABLE_EDP
	187	/* edp.c */
	188	int edp_send(PROTO_SEND_SIG);
	189	int edp_decode(PROTO_DECODE_SIG);
	190	#endif
	191
4b292b55 VB	192	/* dmi.c */
4b292b55 VB	193	#ifdef ENABLE_LLDPMED
4b292b55 VB	194	char *dmi_hw(void);
	195	char *dmi_fw(void);
	196	char *dmi_sn(void);
	197	char *dmi_manuf(void);
	198	char *dmi_model(void);
	199	char *dmi_asset(void);
	200	#endif
4b292b55	201
25de85a4	202	#ifdef USE_SNMP
4b292b55 VB	203	/* agent.c */
	204	void agent_shutdown(void);
	205	void agent_init(struct lldpd , char );
25de85a4 VB	206	void agent_notify(struct lldpd_hardware , int, struct lldpd_port );
25de85a4 VB	207	#endif
4b292b55	208
71a7dbb3	209	#ifdef ENABLE_PRIVSEP
4b292b55 VB	210	/* agent_priv.c */
4b292b55 VB	211	void agent_priv_register_domain(void);
71a7dbb3	212	#endif
4b292b55 VB	213
4b292b55 VB	214	/* client.c */
e0478a46 VB	215	int
	216	client_handle_client(struct lldpd *cfg,
	217	ssize_t(send)(void , int, void *, size_t),
	218	void *,
4e90a9e0 VB	219	enum hmsg_type type, void *buffer, size_t n,
4e90a9e0 VB	220	int*);
4b292b55 VB	221
4b292b55 VB	222	/* priv.c */
6fd393a2	223	void priv_init(const char*, int, uid_t, gid_t);
71a7dbb3	224	void priv_wait(void);
0262adbb	225	void priv_ctl_cleanup(const char *ctlname);
4b292b55	226	char *priv_gethostbyname(void);
e12c2365	227	#ifdef HOST_OS_LINUX
70c9cb05	228	int priv_open(char*);
4ea0565e	229	void asroot_open(void);
e12c2365	230	int priv_ethtool(char, void, size_t);
4ea0565e	231	void asroot_ethtool(void);
e12c2365	232	#endif
e735a319	233	int priv_iface_init(int, char *);
4ea0565e	234	int asroot_iface_init_os(int, char , int );
4b292b55	235	int priv_iface_multicast(const char , u_int8_t , int);
47820fc4 VB	236	int priv_iface_description(const char , const char );
47820fc4 VB	237	int asroot_iface_description_os(const char , const char );
4b292b55 VB	238	int priv_snmp_socket(struct sockaddr_un *);
4b292b55 VB	239
065732ca	240	enum priv_cmd {
4ea0565e VB	241	PRIV_PING,
	242	PRIV_DELETE_CTL_SOCKET,
	243	PRIV_GET_HOSTNAME,
	244	PRIV_OPEN,
	245	PRIV_ETHTOOL,
	246	PRIV_IFACE_INIT,
	247	PRIV_IFACE_MULTICAST,
47820fc4	248	PRIV_IFACE_DESCRIPTION,
4ea0565e	249	PRIV_SNMP_SOCKET,
065732ca	250	};
4ea0565e	251
00e40dba	252	/* priv-seccomp.c */
71a7dbb3	253	#if defined USE_SECCOMP && defined ENABLE_PRIVSEP
00e40dba VB	254	int priv_seccomp_init(int, int);
00e40dba VB	255	#endif
4ea0565e VB	256
4ea0565e VB	257	/* privsep_io.c */
d2a289bb VB	258	enum priv_context {
	259	PRIV_PRIVILEGED,
	260	PRIV_UNPRIVILEGED
	261	};
	262	int may_read(enum priv_context, void *, size_t);
	263	void must_read(enum priv_context, void *, size_t);
	264	void must_write(enum priv_context, const void *, size_t);
	265	void priv_privileged_fd(int);
	266	void priv_unprivileged_fd(int);
	267	int receive_fd(enum priv_context);
	268	void send_fd(enum priv_context, int);
4b292b55	269
e12c2365	270	/* interfaces-.c /
e12c2365	271
adbb6e54 VB	272	/* BPF filter to get revelant information from interfaces */
	273	/* LLDP: "ether proto 0x88cc and ether dst 01:80:c2:00:00:0e" */
	274	/* FDP: "ether dst 01:e0:52:cc:cc:cc" */
	275	/* CDP: "ether dst 01:00:0c:cc:cc:cc" */
	276	/* SONMP: "ether dst 01:00:81:00:01:00" */
	277	/* EDP: "ether dst 00:e0:2b:00:00:00" */
	278	/* For optimization purpose, we first check if the first bit of the
	279	first byte is 1. if not, this can only be an EDP packet:
	280
	281	tcpdump -dd "(ether[0] & 1 = 1 and
	282	((ether proto 0x88cc and ether dst 01:80:c2:00:00:0e) or
	283	(ether dst 01:e0:52:cc:cc:cc) or
	284	(ether dst 01:00:0c:cc:cc:cc) or
	285	(ether dst 01:00:81:00:01:00))) or
	286	(ether dst 00:e0:2b:00:00:00)"
	287	*/
	288
	289	#define LLDPD_FILTER_F \
	290	{ 0x30, 0, 0, 0x00000000 }, \
	291	{ 0x54, 0, 0, 0x00000001 }, \
	292	{ 0x15, 0, 14, 0x00000001 }, \
	293	{ 0x28, 0, 0, 0x0000000c }, \
	294	{ 0x15, 0, 4, 0x000088cc }, \
	295	{ 0x20, 0, 0, 0x00000002 }, \
	296	{ 0x15, 0, 2, 0xc200000e }, \
	297	{ 0x28, 0, 0, 0x00000000 }, \
	298	{ 0x15, 12, 13, 0x00000180 }, \
	299	{ 0x20, 0, 0, 0x00000002 }, \
	300	{ 0x15, 0, 2, 0x52cccccc }, \
	301	{ 0x28, 0, 0, 0x00000000 }, \
	302	{ 0x15, 8, 9, 0x000001e0 }, \
	303	{ 0x15, 1, 0, 0x0ccccccc }, \
	304	{ 0x15, 0, 2, 0x81000100 }, \
	305	{ 0x28, 0, 0, 0x00000000 }, \
	306	{ 0x15, 4, 5, 0x00000100 }, \
	307	{ 0x20, 0, 0, 0x00000002 }, \
	308	{ 0x15, 0, 3, 0x2b000000 }, \
	309	{ 0x28, 0, 0, 0x00000000 }, \
	310	{ 0x15, 0, 1, 0x000000e0 }, \
	311	{ 0x6, 0, 0, 0x0000ffff }, \
	312	{ 0x6, 0, 0, 0x00000000 },
	313
	314	/* This function is responsible to refresh information about interfaces. It is
	315	* OS specific but should be present for each OS. It can use the functions in
	316	* `interfaces.c` as helper by providing a list of OS-independent interface
	317	* devices. */
	318	void interfaces_update(struct lldpd *);
adbb6e54 VB	319
	320	/* interfaces.c */
	321	/* An interface cannot be both physical and (bridge or bond or vlan) */
	322	#define IFACE_PHYSICAL_T (1 << 0) /* Physical interface */
	323	#define IFACE_BRIDGE_T (1 << 1) /* Bridge interface */
	324	#define IFACE_BOND_T (1 << 2) /* Bond interface */
	325	#define IFACE_VLAN_T (1 << 3) /* VLAN interface */
	326	#define IFACE_WIRELESS_T (1 << 4) /* Wireless interface */
	327	struct interfaces_device {
	328	TAILQ_ENTRY(interfaces_device) next;
e12c2365 VB	329	int index; /* Index */
	330	char name; / Name */
	331	char alias; / Alias */
e12c2365	332	char address; / MAC address */
adbb6e54 VB	333	char driver; / Driver (for whitelisting purpose) */
	334	int flags; /* Flags (IFF_) /
	335	int mtu; /* MTU */
	336	int type; /* Type (see IFACE__T) /
	337	int vlanid; /* If a VLAN, what is the VLAN ID? */
	338	struct interfaces_device lower; / Lower interface (for a VLAN for example) */
	339	struct interfaces_device upper; / Upper interface (for a bridge or a bond) */
	340
	341	/* The following are OS specific. Should be static (no free function) */
	342	#ifdef HOST_OS_LINUX
	343	int lower_idx; /* Index to lower interface */
	344	int upper_idx; /* Index to upper interface */
	345	int txqueue; /* Transmit queue length */
	346	#endif
e12c2365	347	};
adbb6e54 VB	348	struct interfaces_address {
	349	TAILQ_ENTRY(interfaces_address) next;
	350	int index; /* Index */
	351	int flags; /* Flags */
e12c2365	352	struct sockaddr_storage address; /* Address */
adbb6e54 VB	353
	354	/* The following are OS specific. */
	355	/* Nothing yet. */
e12c2365	356	};
adbb6e54 VB	357	TAILQ_HEAD(interfaces_device_list, interfaces_device);
	358	TAILQ_HEAD(interfaces_address_list, interfaces_address);
	359	void interfaces_free_device(struct interfaces_device *);
	360	void interfaces_free_address(struct interfaces_address *);
	361	void interfaces_free_devices(struct interfaces_device_list *);
	362	void interfaces_free_addresses(struct interfaces_address_list *);
	363	struct interfaces_device* interfaces_indextointerface(
	364	struct interfaces_device_list *,
	365	int);
	366	struct interfaces_device* interfaces_nametointerface(
	367	struct interfaces_device_list *,
	368	const char *);
	369
	370	void interfaces_helper_whitelist(struct lldpd *,
	371	struct interfaces_device_list *);
	372	void interfaces_helper_chassis(struct lldpd *,
	373	struct interfaces_device_list *);
bdfe4193 VB	374	void interfaces_helper_add_hardware(struct lldpd *,
bdfe4193 VB	375	struct lldpd_hardware *);
adbb6e54	376	void interfaces_helper_physical(struct lldpd *,
88bc404f	377	struct interfaces_device_list *,
22e8cd65	378	struct lldpd_ops *,
88bc404f	379	int(init)(struct lldpd , struct lldpd_hardware *));
adbb6e54 VB	380	void interfaces_helper_port_name_desc(struct lldpd_hardware *,
	381	struct interfaces_device *);
	382	void interfaces_helper_mgmt(struct lldpd *,
	383	struct interfaces_address_list *);
	384	#ifdef ENABLE_DOT1
	385	void interfaces_helper_vlan(struct lldpd *,
	386	struct interfaces_device_list *);
	387	#endif
5347914e VB	388	int interfaces_send_helper(struct lldpd *,
5347914e VB	389	struct lldpd_hardware , char , size_t);
adbb6e54 VB	390
adbb6e54 VB	391	void interfaces_setup_multicast(struct lldpd , const char , int);
c3e340b6	392	int interfaces_routing_enabled(struct lldpd *);
adbb6e54 VB	393
	394	#ifdef HOST_OS_LINUX
	395	/* netlink.c */
	396	struct interfaces_device_list *netlink_get_interfaces(void);
	397	struct interfaces_address_list *netlink_get_addresses(void);
0484f180	398	int netlink_subscribe_changes(void);
e12c2365 VB	399	#endif
e12c2365 VB	400
c3e340b6 VB	401	#ifndef HOST_OS_LINUX
	402	int ifbpf_phys_init(struct lldpd , struct lldpd_hardware );
	403	#endif
	404
4b292b55	405	#endif /* _LLDPD_H */