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/* $OpenBSD: switchd.h,v 1.7 2016/07/21 08:39:23 reyk Exp $ */
/*
* Copyright (c) 2013-2016 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and 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 _SWITCHD_H
#define _SWITCHD_H
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/uio.h>
#include <limits.h>
#include <imsg.h>
#include "ofp.h"
#include "ofp10.h"
#include "types.h"
#include "proc.h"
struct switchd;
struct timer {
struct event tmr_ev;
struct switchd *tmr_sc;
void (*tmr_cb)(struct switchd *, void *);
void *tmr_cbarg;
};
struct packet {
union {
struct ether_header *pkt_eh;
uint8_t *pkt_buf;
};
size_t pkt_len;
};
struct macaddr {
uint8_t mac_addr[ETHER_ADDR_LEN];
uint32_t mac_port;
time_t mac_age;
RB_ENTRY(macaddr) mac_entry;
};
RB_HEAD(macaddr_head, macaddr);
struct switch_control {
unsigned int sw_id;
struct sockaddr_storage sw_addr;
struct macaddr_head sw_addrcache;
struct timer sw_timer;
unsigned int sw_cachesize;
RB_ENTRY(switch_control) sw_entry;
};
RB_HEAD(switch_head, switch_control);
struct switch_connection {
unsigned int con_id;
int con_fd;
struct sockaddr_storage con_peer;
struct sockaddr_storage con_local;
struct switch_control *con_switch;
in_port_t con_port;
struct event con_ev;
struct switchd *con_sc;
uint32_t con_xidnxt;
TAILQ_ENTRY(switch_connection)
con_next;
};
struct switch_server {
int srv_fd;
int srv_tls;
struct sockaddr_storage srv_addr;
struct event srv_ev;
struct switchd *srv_sc;
};
struct switch_controller {
enum switch_conn_type swc_type;
struct sockaddr_storage swc_addr;
};
struct switch_device {
char sdv_device[PATH_MAX];
struct switch_controller sdv_swc;
TAILQ_ENTRY(switch_device)
sdv_next;
};
struct switchd {
struct privsep sc_ps;
struct switch_server sc_server;
int sc_tap;
struct switch_head sc_switches;
uint32_t sc_swid;
unsigned int sc_cache_max;
unsigned int sc_cache_timeout;
char sc_conffile[PATH_MAX];
uint8_t sc_opts;
TAILQ_HEAD(, switch_device)
sc_conns;
};
struct ofp_callback {
uint8_t cb_type;
int (*cb)(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
int (*validate)(struct switchd *, struct sockaddr_storage *,
struct sockaddr_storage *, struct ofp_header *,
struct ibuf *);
};
#define SWITCHD_OPT_VERBOSE 0x01
#define SWITCHD_OPT_NOACTION 0x04
/* switchd.c */
int switchd_socket(struct sockaddr *, int);
int switchd_listen(struct sockaddr *);
int switchd_sockaddr(const char *, in_port_t, struct sockaddr_storage *);
int switchd_tap(void);
int switchd_open_device(struct privsep *, const char *, size_t);
/* packet.c */
int packet_input(struct switchd *, struct switch_control *,
uint32_t, uint32_t *, struct ibuf *, size_t,
struct packet *);
/* switch.c */
void switch_init(struct switchd *);
int switch_dispatch_control(int, struct privsep_proc *,
struct imsg *);
struct switch_control
*switch_add(struct switch_connection *);
void switch_remove(struct switchd *, struct switch_control *);
struct switch_control
*switch_get(struct switch_connection *);
struct macaddr *switch_learn(struct switchd *, struct switch_control *,
uint8_t *, uint32_t);
struct macaddr *switch_cached(struct switch_control *, uint8_t *);
RB_PROTOTYPE(switch_head, switch_control, sw_entry, switch_cmp);
RB_PROTOTYPE(macaddr_head, macaddr, mac_entry, switch_maccmp);
/* timer.c */
void timer_set(struct switchd *, struct timer *,
void (*)(struct switchd *, void *), void *);
void timer_add(struct switchd *, struct timer *, int);
void timer_del(struct switchd *, struct timer *);
/* util.c */
void socket_set_blockmode(int, enum blockmodes);
in_port_t socket_getport(struct sockaddr_storage *);
int sockaddr_cmp(struct sockaddr *, struct sockaddr *, int);
struct in6_addr *prefixlen2mask6(uint8_t, uint32_t *);
uint32_t prefixlen2mask(uint8_t);
const char *print_host(struct sockaddr_storage *, char *, size_t);
const char *print_ether(const uint8_t *)
__attribute__ ((__bounded__(__minbytes__,1,ETHER_ADDR_LEN)));
const char *print_map(unsigned int, struct constmap *);
void print_verbose(const char *emsg, ...)
__attribute__((__format__ (printf, 1, 2)));
void print_debug(const char *emsg, ...)
__attribute__((__format__ (printf, 1, 2)));
void getmonotime(struct timeval *);
int parsehostport(const char *, struct sockaddr *, socklen_t);
/* ofp.c */
pid_t ofp(struct privsep *, struct privsep_proc *);
void ofp_close(struct switch_connection *);
void ofp_read(int, short, void *);
int ofp_send(struct switch_connection *, struct ofp_header *,
struct ibuf *);
void ofp_accept(int, short, void *);
int ofp_validate_header(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, uint8_t);
/* ofp10.c */
int ofp10_hello(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
int ofp10_validate(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *);
int ofp10_input(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
/* ofp13.c */
int ofp13_input(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
/* ofcconn.c */
pid_t ofcconn(struct privsep *, struct privsep_proc *);
void ofcconn_shutdown(void);
/* imsg_util.c */
struct ibuf *ibuf_new(void *, size_t);
struct ibuf *ibuf_static(void);
int ibuf_cat(struct ibuf *, struct ibuf *);
void ibuf_release(struct ibuf *);
size_t ibuf_length(struct ibuf *);
int ibuf_setsize(struct ibuf *, size_t);
uint8_t *ibuf_data(struct ibuf *);
void *ibuf_getdata(struct ibuf *, size_t);
ssize_t ibuf_dataleft(struct ibuf *);
size_t ibuf_dataoffset(struct ibuf *);
struct ibuf *ibuf_get(struct ibuf *, size_t);
struct ibuf *ibuf_dup(struct ibuf *);
struct ibuf *ibuf_random(size_t);
int ibuf_prepend(struct ibuf *, void *, size_t);
void *ibuf_advance(struct ibuf *, size_t);
void ibuf_zero(struct ibuf *);
void ibuf_reset(struct ibuf *);
/* parse.y */
int cmdline_symset(char *);
int parse_config(const char *, struct switchd *);
#endif /* _SWITCHD_H */
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