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/* $OpenBSD: switchd.h,v 1.30 2019/11/21 06:22:57 akoshibe 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 <net/ofp.h>
#include <limits.h>
#include <imsg.h>
#include "ofp10.h"
#include "types.h"
#include "proc.h"
#include "ofp_map.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_table {
TAILQ_ENTRY(switch_table) st_entry;
int st_table;
unsigned int st_entries;
unsigned int st_maxentries;
uint32_t st_actions;
uint32_t st_actionsmiss;
uint32_t st_instructions;
uint32_t st_instructionsmiss;
uint64_t st_setfield;
uint64_t st_setfieldmiss;
uint64_t st_match;
uint64_t st_wildcard;
/* Maximum of 256 tables (64 * 4). */
uint64_t st_nexttable[4];
uint64_t st_nexttablemiss[4];
};
TAILQ_HEAD(switch_table_list, switch_table);
struct multipart_message {
SLIST_ENTRY(multipart_message)
mm_entry;
uint32_t mm_xid;
uint8_t mm_type;
};
SLIST_HEAD(multipart_list, multipart_message);
struct switch_address {
enum switch_conn_type swa_type;
struct sockaddr_storage swa_addr;
};
struct switch_connection {
unsigned int con_id;
unsigned int con_instance;
int con_fd;
int con_inflight;
struct sockaddr_storage con_peer;
struct sockaddr_storage con_local;
in_port_t con_port;
uint32_t con_xidnxt;
int con_version;
enum ofp_state con_state;
struct event con_ev;
struct ibuf *con_rbuf;
struct msgbuf con_wbuf;
struct switch_control *con_switch;
struct switchd *con_sc;
struct switch_server *con_srv;
struct multipart_list con_mmlist;
struct switch_table_list
con_stlist;
TAILQ_ENTRY(switch_connection)
con_entry;
};
TAILQ_HEAD(switch_connections, switch_connection);
struct switch_server {
int srv_fd;
int srv_tls;
struct sockaddr_storage srv_addr;
struct event srv_ev;
struct event srv_evt;
struct switchd *srv_sc;
};
struct switch_client {
struct switch_address swc_addr;
struct switch_address swc_target;
struct event swc_ev;
void *swc_arg;
TAILQ_ENTRY(switch_client)
swc_next;
};
TAILQ_HEAD(switch_clients, switch_client);
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;
struct switch_clients sc_clients;
struct switch_connections
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
struct oflowmod_ctx {
uint8_t ctx_flags;
#define OFMCTX_IBUF 0x01
enum oflowmod_state ctx_state;
struct ibuf *ctx_ibuf;
struct ofp_flow_mod *ctx_fm;
size_t ctx_start;
size_t ctx_ostart;
size_t ctx_oend;
size_t ctx_istart;
size_t ctx_iend;
size_t ctx_oioff;
struct ofp_instruction *ctx_oi;
};
/* 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);
struct switch_connection *
switchd_connbyid(struct switchd *, unsigned int, unsigned int);
struct switch_connection *
switchd_connbyaddr(struct switchd *, struct sockaddr *);
/* packet.c */
int packet_ether_input(struct ibuf *, size_t, struct packet *);
int packet_input(struct switchd *, struct switch_control *,
uint32_t, uint32_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);
int accept4_reserve(int, struct sockaddr *, socklen_t *,
int, int, volatile int *);
in_port_t socket_getport(struct sockaddr_storage *);
int socket_setport(struct sockaddr_storage *, in_port_t);
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 print_hex(uint8_t *, off_t, size_t);
void getmonotime(struct timeval *);
int parsehostport(const char *, struct sockaddr *, socklen_t);
/* ofrelay.c */
void ofrelay(struct privsep *, struct privsep_proc *);
void ofrelay_run(struct privsep *, struct privsep_proc *, void *);
int ofrelay_attach(struct switch_server *, int,
struct sockaddr *);
void ofrelay_close(struct switch_connection *);
void ofrelay_write(struct switch_connection *, struct ibuf *);
/* ofp.c */
void ofp(struct privsep *, struct privsep_proc *);
void ofp_close(struct switch_connection *);
int ofp_open(struct privsep *, struct switch_connection *);
void ofp_accept(int, short, void *);
int ofp_input(struct switch_connection *, struct ibuf *);
int ofp_nextstate(struct switchd *, struct switch_connection *,
enum ofp_state);
struct switch_table *
switch_tablelookup(struct switch_connection *, int);
struct switch_table *
switch_newtable(struct switch_connection *, int);
void switch_deltable(struct switch_connection *,
struct switch_table *);
void switch_freetables(struct switch_connection *);
/* 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 *);
int ofp13_hello(struct switchd *, struct switch_connection *,
struct ofp_header *oh, struct ibuf *);
int ofp13_validate(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *);
int ofp13_desc(struct switchd *, struct switch_connection *);
int ofp13_flow_stats(struct switchd *, struct switch_connection *,
uint32_t, uint32_t, uint8_t);
int ofp13_table_features(struct switchd *,
struct switch_connection *, uint8_t);
int ofp13_featuresrequest(struct switchd *,
struct switch_connection *);
struct ofp_flow_mod *
ofp13_flowmod(struct switch_connection *, struct ibuf *,
uint8_t);
int ofp13_setconfig(struct switchd *, struct switch_connection *,
uint16_t, uint16_t);
int ofp13_tablemiss_sendctrl(struct switchd *,
struct switch_connection *, uint8_t);
/* ofp_common.c */
int ofp_validate_header(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, uint8_t);
int ofp_validate(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *, uint8_t);
int ofp_output(struct switch_connection *, struct ofp_header *,
struct ibuf *);
struct multipart_message *
ofp_multipart_lookup(struct switch_connection *, uint32_t);
int ofp_multipart_add(struct switch_connection *, uint32_t,
uint8_t);
void ofp_multipart_del(struct switch_connection *, uint32_t);
void ofp_multipart_free(struct switch_connection *,
struct multipart_message *);
void ofp_multipart_clear(struct switch_connection *);
int action_new(struct ibuf *, uint16_t);
int action_group(struct ibuf *, uint32_t);
int action_output(struct ibuf *, uint32_t, uint16_t);
int action_push(struct ibuf *, uint16_t, uint16_t);
int action_pop_vlan(struct ibuf *);
int action_pop_mpls(struct ibuf *, uint16_t);
int action_copyttlout(struct ibuf *);
int action_copyttlin(struct ibuf *);
int action_decnwttl(struct ibuf *);
struct ofp_action_set_field *
action_setfield(struct ibuf *ibuf);
struct ofp_ox_match *
oxm_get(struct ibuf *, uint16_t, int, uint8_t);
int oxm_inport(struct ibuf *, uint32_t);
int oxm_inphyport(struct ibuf *, uint32_t);
int oxm_metadata(struct ibuf *, int, uint64_t, uint64_t);
int oxm_etheraddr(struct ibuf *, int, uint8_t *, uint8_t *);
int oxm_ethertype(struct ibuf *, uint16_t);
int oxm_vlanvid(struct ibuf *, int, uint16_t, uint16_t);
int oxm_vlanpcp(struct ibuf *, uint8_t);
int oxm_ipdscp(struct ibuf *, uint8_t);
int oxm_ipecn(struct ibuf *, uint8_t);
int oxm_ipproto(struct ibuf *, uint8_t);
int oxm_ipaddr(struct ibuf *, int, int, uint32_t, uint32_t);
int oxm_tcpport(struct ibuf *, int, uint16_t);
int oxm_udpport(struct ibuf *, int, uint16_t);
int oxm_sctpport(struct ibuf *, int, uint16_t);
int oxm_icmpv4type(struct ibuf *, uint8_t);
int oxm_icmpv4code(struct ibuf *, uint8_t);
int oxm_arpop(struct ibuf *, uint16_t);
int oxm_arpaddr(struct ibuf *, int, int, uint32_t, uint32_t);
int oxm_arphaddr(struct ibuf *, int, uint8_t *, uint8_t *);
int oxm_ipv6addr(struct ibuf *, int, struct in6_addr *,
struct in6_addr *);
int oxm_ipv6flowlabel(struct ibuf *, int, uint32_t, uint32_t);
int oxm_icmpv6type(struct ibuf *, uint8_t);
int oxm_icmpv6code(struct ibuf *, uint8_t);
int oxm_ipv6ndtarget(struct ibuf *, struct in6_addr *);
int oxm_ipv6ndlinkaddr(struct ibuf *, int, uint8_t *);
int oxm_mplslabel(struct ibuf *, uint32_t);
int oxm_mplstc(struct ibuf *, uint8_t);
int oxm_mplsbos(struct ibuf *, uint8_t);
int oxm_tunnelid(struct ibuf *, int, uint64_t, uint64_t);
int oxm_ipv6exthdr(struct ibuf *, int, uint16_t, uint16_t);
struct ofp_instruction *
ofp_instruction(struct ibuf *, uint16_t, uint16_t);
struct ibuf *
oflowmod_open(struct oflowmod_ctx *,
struct switch_connection *, struct ibuf *, uint8_t);
int oflowmod_close(struct oflowmod_ctx *);
int oflowmod_mopen(struct oflowmod_ctx *);
int oflowmod_mclose(struct oflowmod_ctx *);
int oflowmod_iopen(struct oflowmod_ctx *);
int oflowmod_iclose(struct oflowmod_ctx *);
int oflowmod_instruction(struct oflowmod_ctx *, unsigned int);
int oflowmod_instructionclose(struct oflowmod_ctx *);
int oflowmod_state(struct oflowmod_ctx *,
unsigned int, unsigned int);
int oflowmod_err(struct oflowmod_ctx *, const char *, int);
int ofp_validate_hello(struct switchd *,
struct sockaddr_storage *, struct sockaddr_storage *,
struct ofp_header *, struct ibuf *);
int ofp_recv_hello(struct switchd *, struct switch_connection *,
struct ofp_header *, struct ibuf *);
int ofp_send_hello(struct switchd *, struct switch_connection *,
int);
int ofp_send_featuresrequest(struct switchd *,
struct switch_connection *);
/* ofcconn.c */
void 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);
int ibuf_setmax(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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