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/* $OpenBSD: if_switch.h,v 1.12 2019/11/06 03:51:26 dlg Exp $ */
/*
* Copyright (c) 2016 Kazuya GODA <goda@openbsd.org>
* Copyright (c) 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 _NET_IF_SWITCH_H_
#define _NET_IF_SWITCH_H_
/* capabilities for switch(4) */
#define SWITCH_CAP_STP 0x0001
#define SWITCH_CAP_LEARNING 0x0002
#define SWITCH_CAP_OFP 0x0004
#ifdef _KERNEL
struct switch_field_tunnel {
uint32_t tun_af;
struct in_addr tun_ipv4_src;
struct in_addr tun_ipv4_dst;
struct in6_addr tun_ipv6_src;
struct in6_addr tun_ipv6_dst;
uint64_t tun_key;
};
struct switch_field_ether {
uint8_t eth_src[ETHER_ADDR_LEN];
uint8_t __pad_eth_src[2];
uint8_t eth_dst[ETHER_ADDR_LEN];
uint8_t __pad_eth_dst[2];
uint16_t eth_type;
uint8_t __pad_eth_type[2];
};
struct switch_field_vlan {
uint16_t vlan_tpid;
uint16_t vlan_vid;
uint16_t vlan_pcp;
uint8_t __pad_vlan_pcp[2];
};
struct switch_field_ipv4 {
uint32_t ipv4_src;
uint32_t ipv4_dst;
uint8_t ipv4_proto;
uint8_t ipv4_tos;
uint8_t ipv4_ttl;
uint8_t ipv4_frag;
};
struct switch_field_ipv6 {
struct in6_addr ipv6_src;
struct in6_addr ipv6_dst;
uint32_t ipv6_flow_label;
uint8_t ipv6_nxt;
uint8_t ipv6_tclass;
uint8_t ipv6_hlimit;
uint8_t ipv6_frag;
};
struct switch_field_arp {
uint16_t _arp_op;
uint8_t __pad_arp_op[2];
uint8_t arp_sha[ETHER_ADDR_LEN];
uint8_t __pad_arp_sha[2];
uint8_t arp_tha[ETHER_ADDR_LEN];
uint8_t __pad_arp_tha[2];
uint32_t arp_sip;
uint32_t arp_tip;
};
struct switch_field_nd6 {
struct in6_addr nd6_target;
uint8_t nd6_lladdr[ETHER_ADDR_LEN];
uint8_t __pad_nd6_lladdr[2];
};
struct switch_field_icmpv4 {
uint8_t icmpv4_type;
uint8_t icmpv4_code;
uint8_t __pad[2];
};
struct switch_field_icmpv6 {
uint8_t icmpv6_type;
uint8_t icmpv6_code;
uint8_t __pad[2];
};
struct switch_field_tcp {
uint16_t tcp_src;
uint16_t tcp_dst;
uint8_t tcp_flags;
uint8_t __pad[3];
};
struct switch_field_udp {
uint16_t udp_src;
uint16_t udp_dst;
};
struct switch_field_sctp {
uint16_t sctp_src;
uint16_t sctp_dst;
};
union switch_field {
struct switch_field_tunnel swfcl_tunnel;
struct switch_field_ether swfcl_ether;
struct switch_field_vlan swfcl_vlan;
struct switch_field_ipv4 swfcl_ipv4;
struct switch_field_ipv6 swfcl_ipv6;
struct switch_field_arp swfcl_arp;
struct switch_field_nd6 swfcl_nd6;
struct switch_field_icmpv4 swfcl_icmpv4;
struct switch_field_icmpv6 swfcl_icmpv6;
struct switch_field_tcp swfcl_tcp;
struct switch_field_udp swfcl_udp;
struct switch_field_sctp swfcl_sctp;
};
struct switch_flow_classify {
uint64_t swfcl_flow_hash;
/*
* Pipeline field on OpenFlow switch specific
*/
uint64_t swfcl_metadata;
uint64_t swfcl_cookie;
uint8_t swfcl_table_id;
/*
* Classify field without protocol headers
*/
uint32_t swfcl_in_port;
/*
* Classify field from protocol headers
*/
struct switch_field_tunnel *swfcl_tunnel;
struct switch_field_ether *swfcl_ether;
struct switch_field_vlan *swfcl_vlan;
struct switch_field_ipv4 *swfcl_ipv4;
struct switch_field_ipv6 *swfcl_ipv6;
struct switch_field_arp *swfcl_arp;
struct switch_field_nd6 *swfcl_nd6;
struct switch_field_icmpv4 *swfcl_icmpv4;
struct switch_field_icmpv6 *swfcl_icmpv6;
struct switch_field_tcp *swfcl_tcp;
struct switch_field_udp *swfcl_udp;
struct switch_field_sctp *swfcl_sctp;
};
struct switch_softc;
struct switch_port {
TAILQ_ENTRY(switch_port) swpo_list_next;
TAILQ_ENTRY(switch_port) swpo_fwdp_next;
uint32_t swpo_port_no;
uint32_t swpo_ifindex;
struct timespec swpo_appended;
struct switch_softc *swpo_switch;
uint32_t swpo_flags;
uint32_t swpo_protected;
struct task swpo_dtask;
void (*swop_bk_start)(struct ifnet *);
};
TAILQ_HEAD(switch_fwdp_queue, switch_port);
struct switch_dev {
struct mbuf *swdev_lastm;
struct mbuf *swdev_inputm;
struct mbuf_queue swdev_outq;
struct selinfo swdev_rsel;
struct selinfo swdev_wsel;
int swdev_waiting;
void (*swdev_init)(struct switch_softc *);
int (*swdev_input)(struct switch_softc *,
struct mbuf *);
int (*swdev_output)(struct switch_softc *,
struct mbuf *);
};
struct switch_softc {
struct ifnet sc_if;
int sc_unit;
uint32_t sc_capabilities;
struct switch_dev *sc_swdev; /* char device */
struct bstp_state *sc_stp; /* STP state */
struct swofp_ofs *sc_ofs; /* OpenFlow */
caddr_t sc_ofbpf; /* DLT_OPENFLOW */
TAILQ_HEAD(,switch_port) sc_swpo_list; /* port */
LIST_ENTRY(switch_softc) sc_switch_next; /* switch link */
void (*switch_process_forward)(
struct switch_softc *, struct switch_flow_classify *,
struct mbuf *);
};
/* if_switch.c */
struct switch_softc
*switch_lookup(int);
void switch_port_egress(struct switch_softc *, struct switch_fwdp_queue *,
struct mbuf *);
int switch_swfcl_dup(struct switch_flow_classify *,
struct switch_flow_classify *);
void switch_swfcl_free(struct switch_flow_classify *);
struct mbuf
*switch_flow_classifier(struct mbuf *, uint32_t,
struct switch_flow_classify *);
int switch_mtap(caddr_t, struct mbuf *, int, uint64_t);
int ofp_split_mbuf(struct mbuf *, struct mbuf **);
/* switchctl.c */
void switch_dev_destroy(struct switch_softc *);
/* in switchofp.c */
void swofp_attach(void);
int swofp_create(struct switch_softc *);
int swofp_init(struct switch_softc *);
void swofp_destroy(struct switch_softc *);
int swofp_ioctl(struct ifnet *, unsigned long, caddr_t);
uint32_t
swofp_assign_portno(struct switch_softc *, uint32_t);
#endif /* _KERNEL */
#endif /* _NET_IF_SWITCH_H_ */
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